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1

ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Hemispherical Sky RHI Scan (6 horizon-to-horizon scans at 30-degree azimuth intervals)  

DOE Data Explorer (OSTI)

Ka-Band Scanning ARM Cloud Radar (KASACR) Hemispherical Sky RHI Scan (6 horizon-to-horizon scans at 30-degree azimuth intervals)

Nitin Bharadwaj; Kevin Widener

2

Definition: Azimuth | Open Energy Information  

Open Energy Info (EERE)

Azimuth Azimuth Jump to: navigation, search Dictionary.png Azimuth The angle between true south and the point on the horizon directly below the sun.[1] View on Wikipedia Wikipedia Definition An azimuth is an angular measurement in a spherical coordinate system. The vector from an observer to a point of interest is projected perpendicularly onto a reference plane; the angle between the projected vector and a reference vector on the reference plane is called the azimuth. An example is the position of a star in the sky. The star is the point of interest, the reference plane is the horizon or the surface of the sea, and the reference vector points north. The azimuth is the angle between the north vector and the perpendicular projection of the star down onto the horizon. Azimuth is usually measured in degrees (°). The concept is used

3

Thermodynamic properties of adsorbed mixtures of benzene and cyclohexane on graphitized carbon and activated charcoal at 30/degree/c  

SciTech Connect

Experimental data at 30/degree/C are reported for the adsorption of mixtures of benzene and cyclohexane on two types of carbon surface: graphitized carbon and activated charcoal. The properties of the adsorbed solution approach those of bulk liquid at vapor saturation for graphitized carbon, but not for activated charcoal. The mixtures adsorbed on graphitized carbon are nonideal, and the deviations from ideality increase with surface coverage. For activated charcoal, the adsorbed mixtures are nearly ideal at all coverages. Mixture behavior for both adsorbents can be predicted without using experimental data for the adsorbed mixtures. 11 refs.

Myers, A.L.; Minka, C.; Ou, D.Y.

1982-01-01T23:59:59.000Z

4

Direct photon-charged hadron azimuthal correlations  

E-Print Network (OSTI)

Azimuthal correlations of direct photons at high transverse energy (8 $<$ E$_T$ $<$ 16 GeV) with away-side hadrons of transverse momentum (3 $<$ p$_T$ $<$ 6 GeV/c) have been measured over a broad range of centrality for $Au+Au$ collisions and $p+p$ collisions at $\\sqrt{s_{NN}}$ = 200 GeV. The presented results are the first measurements at RHIC for $\\gamma$-hadron azimuthal correlations in $Au+Au$ collisions.

Ahmed M. Hamed

2008-06-13T23:59:59.000Z

5

Transition between the 1 x 1 and ({radical}3 x 2{radical}3)R30{degree} surface structures of GaN in the vapor-phase environment  

SciTech Connect

Out-of-plane structures of the GaN(0001) surface in the metal-organic chemical vapor deposition (MOCVD) environment have been determined using in situ grazing-incidence X-ray scattering. The authors measured 11{bar 2}{ell} crystal truncation rod intensities at a variety of temperatures and ammonia partial pressures on both sides of the 1 x 1 to ({radical}3 x 2{radical}3)R30{degree} surface phase transition. The out-of-plane structure of the ({radical}3 x 2{radical}3)R30{degree} phase appears to be nearly independent of temperature below the transition, while the structure of the 1 x 1 phase changes increase rapidly as the phase transition is approached from above. A model for the structure of the 1 x 1 phase with a partially-occupied top Ga layer agrees well with the data. The observed temperature dependence is consistent with a simple model of the equilibrium between the vapor phase and the surface coverage of Ga and N. In addition, the authors present results on the kinetics of reconstruction domain coarsening following a quench into the ({radical}3 x 2{radical}3)R30{degree} phase field.

Munkholm, A.; Thompson, C.; Stephenson, G. B.; Eastman, J. A.; Auciello, O.; Fini, P.; Speck, J. S.; DenBaars, S. P.

2000-01-12T23:59:59.000Z

6

On azimuthally symmetric 2-sphere convolution  

Science Conference Proceedings (OSTI)

We consider the problem of azimuthally symmetric convolution of signals defined on the 2-Sphere. Applications of such convolution include but are not limited to: geodesy, astronomical data (such as the famous Wilkinson Microwave Anisotropy Probe data), ... Keywords: 2-Sphere convolution, 2-Sphere filtering, Left Convolution, SO(3) convolution, Unit sphere

Rodney A. Kennedy; Tharaka A. Lamahewa; Liying Wei

2011-09-01T23:59:59.000Z

7

Unpolarized Azimuthal Asymmetries from the COMPASS Experiment at CERN  

Science Conference Proceedings (OSTI)

Azimuthal asymmetries in unpolarized SIDIS can be used to probe the transverse momentum of the quarks inside the nucleon. Furthermore

Rainer Joosten; on behalf of the COMPASS collaboration

2009-01-01T23:59:59.000Z

8

Computation of azimuthal combustion instabilities in an helicopter combustion chamber  

E-Print Network (OSTI)

Computation of azimuthal combustion instabilities in an helicopter combustion chamber C. Sensiau to compute azimuthal combustion instabilities is presented. It requires a thermoacoustic model using a n - formulation for the coupling between acoutics and combustion. The parameters n and are computed from a LES

Nicoud, Franck

9

Feedback Control of Azimuthal Oscillations in ExB Devices --...  

NLE Websites -- All DOE Office Websites (Extended Search)

Feedback Control of Azimuthal Oscillations in ExB Devices --- Inventor(s) Martin E. Griswold, C. Leland Ellison, Yevgeny Raitses and Nathaniel J. Fisch Disclosed is a new device...

10

Azimuthal Anisotropies as Stringent Test for Nuclear Transport Models  

E-Print Network (OSTI)

Azimuthal distributions of charged particles and intermediate mass fragments emitted in Au+Au collisions at 600AMeV have been measured using the FOPI facility at GSI-Darmstadt. Data show a strong increase of the in-plane azimuthal anisotropy ratio with the charge of the detected fragment. Intermediate mass fragments are found to exhibit a strong momentum-space alignment with respect of the reaction plane. The experimental results are presented as a function of the polar center-of-mass angle and over a broad range of impact parameters. They are compared to the predictions of the Isospin Quantum Molecular Dynamics model using three different parametrisations of the equation of state. We show that such highly accurate data provide stringent test for microscopic transport models and can potentially constrain separately the stiffness of the nuclear equation of state and the momentum dependence of the nuclear interaction.

P. Crochet; F. Rami; R. Dona; the FOPI Collaboration

1997-09-15T23:59:59.000Z

11

Influence of momentum and charge conservation on azimuthally sensitive correlations  

E-Print Network (OSTI)

Charge neutralisation procedure based on a Markov chain Monte Carlo algorithm is applied to a system of generated hadrons. The algorithm changes the charge of a randomly picked particle by shifting it within its isomultiplet. For baryons changes in both electric charge and baryon number are applied and the algorithm leads to charge and baryon number neutralisation. The procedure can thus be used to study the effects of the local charge and baryon number conservation. We attempt to study these together with the local momentum conservation and their effect on azimuthal correlator observable sensitive to local C and CP violation in quark-gluon plasma.

Zuzana Fecková; Boris Tomášik

2012-12-13T23:59:59.000Z

12

Interval Translation Maps of three intervals reduce to Double Rotations  

E-Print Network (OSTI)

We show that any interval translation map (ITM) of three intervals can be reduced either to a rotation or a double rotation. As a consequence, the subset of ITMs of finite type in the space of all ITMs of three intervals is open, dense, and full Lebesgue measure. The set of ITMs of infinite type is a Cantor set of zero measure and of Hausdorff dimension less than full.

Volk, Denis

2012-01-01T23:59:59.000Z

13

First results from two particle azimuthal correlations at ALICE  

Science Conference Proceedings (OSTI)

Analysis of the leading particle correlations in p + p data taken by the ALICE experiment at centre of mass energies s ?=?0.9 and 7 TeV is presented. Per trigger normalized associated particle yield as a function of pair relative azimuthal angle ?? is used to determine the jet?fragmentation transverse momentum j T . The resulting values are compared to similar measurements at lower centre of mass energies done at RHIC and ISR. Furthermore we study the distribution of the transverse momentum component of associated particles with respect to leading particle p out . This quantity is related to di?jet acoplanarity. We present an analytic formula which estimates a background component of measured p out coming from uncorrelated pairs.

F. Krizek; The ALICE collaboration

2011-01-01T23:59:59.000Z

14

Results of charpy V-notch impact testing of structural steel specimens irradiated at {approximately}30{degrees}C to 1 x 10{sup 16} neutrons/cm{sup 2} in a commercial reactor cavity  

SciTech Connect

A capsule containing Charpy V-notch (CVN) and mini-tensile specimens was irradiated at {approximately} 30{degrees}C ({approximately} 85{degrees}F) in the cavity of a commercial nuclear power plant to a fluence of 1 x 10{sup 16} neutrons/cm{sup 2} (> 1MeV). The capsule included six CVN impact specimens of archival High Flux Isotope Reactor A212 grade B ferritic steel and five CVN impact specimens of a well-studied A36 structural steel. This irradiation was part of the ongoing study of neutron-induced damage effects at the low temperature and flux experienced by reactor supports. The plant operators shut down the plant before the planned exposure was reached. The exposure of these specimens produced no significant irradiation-induced embrittlement. Of interest were the data on unirradiated specimens in the L-T orientation machined from a single plate of A36 structural steel, which is the same specification for the structural steel used in some reactor supports. The average CVN energy of five unirradiated specimens obtained from one region of the plate and tested at room temperature was {approximately} 99 J, while the energy of 11 unirradiated specimens from other locations of the same plate was 45 J, a difference of {approximately} 220%. The CVN impact energies for all 18 specimens ranged from a low of 32 J to a high of 111 J. Moreover, it appears that the University of Kansas CVN impact energy data of the unirradiated specimens at the 100-J level are shifted toward higher temperatures by about 20 K. The results were an example of the extent of scatter possible in CVN impact testing. Generic values for the CVN impact energy of A36 should be used with caution in critical applications.

Iskander, S.K.; Stoller, R.E.

1997-04-01T23:59:59.000Z

15

Interval judgments and Euclidean centers  

Science Conference Proceedings (OSTI)

We formulated the problem of finding a priority vector from an interval reciprocal matrix as a Euclidean center problem. The interesting result is that this formulation always has a solution and always provides knowledge about the feasible region. The ... Keywords: Analytic Hierarchy Process, Euclidean centers, Interval judgments, Linear programming

Ami Arbel; Luis Vargas

2007-10-01T23:59:59.000Z

16

VARIABLE TIME-INTERVAL GENERATOR  

DOE Patents (OSTI)

This patent relates to a pulse generator and more particularly to a time interval generator wherein the time interval between pulses is precisely determined. The variable time generator comprises two oscillators with one having a variable frequency output and the other a fixed frequency output. A frequency divider is connected to the variable oscillator for dividing its frequency by a selected factor and a counter is used for counting the periods of the fixed oscillator occurring during a cycle of the divided frequency of the variable oscillator. This defines the period of the variable oscillator in terms of that of the fixed oscillator. A circuit is provided for selecting as a time interval a predetermined number of periods of the variable oscillator. The output of the generator consists of a first pulse produced by a trigger circuit at the start of the time interval and a second pulse marking the end of the time interval produced by the same trigger circuit.

Gross, J.E.

1959-10-31T23:59:59.000Z

17

An Integrating Velocity–Azimuth Process Single-Doppler Radar Wind Retrieval Method  

Science Conference Proceedings (OSTI)

Among the single-Doppler radar wind analysis methods, the velocity–azimuth display (VAD), velocity–azimuth process (VAP), and uniform-wind (UW) methods are widely used because of their simplicity. This paper shows that the VAD, VAP, and UW ...

Xudong Liang

2007-04-01T23:59:59.000Z

18

A HIGH-RESOLUTION HIGH-LUMINOSITY BETA-RAY SPECTROMETER DESIGN EMPLOYING AZIMUTHALLY VARYING MAGNETIC FIELDS  

E-Print Network (OSTI)

BETA-RAY SPECTROMETER DESIGN EMPLOYING AZIMUTHALLY VARYING MAGNETIC FIELDSBETA-RAY SPECTROMETER DESIGN EMPLOYING AZIMUTHALLY VARYING MAGNETIC FIELDSfield of the present type. UCRL-16802 Introduction In attempting to find an efficient magnetic beta-

Bergkvist, Karl-Erik

2008-01-01T23:59:59.000Z

19

Matching collector's azimuthal orientation and energy demand profile for thermosyphonic systems  

SciTech Connect

When a load profile is given, a thermosyphonic solar water heater's collector's azimuthal orientation should be considered as a parameter for maximizing the system's performance. This is demonstrated by simulating such a system with various azimuthal collectors orientation subjected to a single fixed or a daily routine load during the day. The results indicate that the system performance, which is measured here by the average (or mixed-cup) temperature of the withdrawn load, could be improved appreciably by a proper match between the collector's azimuthal orientation and the specifics of the load profiles.

Sokolov, M.; Vaxman, M. (Tel Aviv Univ. (Israel). School of Engineering)

1989-08-01T23:59:59.000Z

20

Negative azimuthal force of a nanofiber-guided light on a particle  

E-Print Network (OSTI)

We calculate the force of a quasicircularly polarized guided light field of a nanofiber on a dielectric spherical particle. We show that the orbital parts of the axial and azimuthal components of the Poynting vector are always positive while the spin parts can be either positive or negative. We find that, for appropriate values of the size parameter of the particle, the azimuthal component of the force is directed oppositely to the circulation direction of the energy flow around the nanofiber. The occurrence of such a negative azimuthal force indicates that the particle undergoes a negative torque.

Kien, Fam Le

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Azimuthal variation of radiation of seismic energy from cast blasts  

SciTech Connect

As part of a series of seismic experiments designed to improve the understanding of the impact of mining blasts on verifying a Comprehensive Test Ban Treaty, a sixteen station network of three-component seismic sensors were deployed around a large cast shot in the Black Thunder Mine. The seismic stations were placed, where possible, at a range of 2.5 kilometers with a constant inter-station spacing of 22.5 degrees. All of the data were recorded with the seismometers oriented such that the radial component pointed to the middle point of the approximately 2 kilometer long shot. High quality data were recorded at each station. Data were scaled to a range of 2.5 kilometers and the sum of the absolute value of the vertical, radial, and transverse channels computed. These observations were used to construct radiation patterns of the seismic energy propagating from the cast shot. It is obvious that cast shots do not radiate seismic energy isotropically. Most of the vertical motion occurs behind the highwall while radial and transverse components of motion are enhanced in directions parallel to the highwall. These findings have implications for local (0.1 to 15 kilometer range) and possibly for regional (100 to 2,000 kilometer range) seismic observations of cast blasting. Locally, it could be argued that peak particle velocities could be scaled not only by range but also by azimuthal direction from the shot. This result implies that long term planning of pit orientation relative to sensitive structures could mitigate problems with vibration levels from future blasting operations. Regionally, the local radiation pattern may be important in determining the magnitude of large scale cast blasts. Improving the transparency of mining operations to international seismic monitoring systems may be possible with similar considerations.

Pearson, D.C.; Stump, B.W. [Los Alamos National Lab., NM (United States); Martin, R.L. [Thunder Basin Coal Co., Wright, WY (United States)

1996-12-31T23:59:59.000Z

22

Frequent-Interval Seismic CPTu  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Frequent-Interval Frequent-Interval Seismic CPTu D. Bruce Nothdurft, MSCE, PE, PG SRS Geotechnical Engineering Department Savannah River Nuclear Solutions Alec V. McGillivray, PhD, PE Geotechnical Consultant Brent J. Gutierrez, PhD, PE NPH Engineering Manager, DOE-SR Motivation  The seismic piezocone penetration test (SCPTu) utilized at SRS because it provides rapid and thorough site characterization.  Evaluation of non-linear soil behavior...  detailed stratigraphy  small-strain velocity measurements  large-strain non-seismic measurements  Depth scale disparity  large-strain non-seismic measurements nearly continuous with depth  small-strain velocity measurements over 1 m depth intervals. 2 October 25-26, 2011 DOE NPH Conference

23

High resolution time interval meter  

DOE Patents (OSTI)

Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

Martin, A.D.

1986-05-09T23:59:59.000Z

24

Steady and unsteady dynamics of an azimuthing podded propulsor related to vehicle maneuvering  

E-Print Network (OSTI)

While the implementation of azimuthing propulsors powered by internal electric motors (often called "podded propulsors") into the commercial ship market has been swift, the understanding of their hydrodynamics through ...

Stettler, Jeffrey W. (Jeffrey Wayne)

2004-01-01T23:59:59.000Z

25

Wavenumber Analysis of Azimuthally Distributed Data: Assessing Maximum Allowable Gap Size  

Science Conference Proceedings (OSTI)

Performing wavenumber decomposition on azimuthally distributed data such as those in tropical cyclones can be challenging when data gaps exist in the signal. In the literature, ad hoc approaches are found to determine maximum gap size beyond which ...

Sylvie Lorsolo; Altu? Aksoy

2012-06-01T23:59:59.000Z

26

Comprehensive fracture diagnostics experiment. Part II. Comparison of seven fracture azimuth measurements  

DOE Green Energy (OSTI)

A great deal of effort has been devoted recently to find geophysical techniques for measuring the hydraulic fracture azimuth. This paper discusses a comparison of seven different measurements used to determine the azimuth in a sandstone formation at a depth of 1000 ft (320 m). The azimuth was determined as N95E, but significant differences existed between some of the results. This is of fundamental importance since in developing new measurements, the limits of these must be found and honored. Of particular interest are the results from microseismic monitoring. The lack of results suggests that remote (e.g., surface) monitoring for seismic events may be impractical for normal, sedimentary, hydrocarbon-bearing formations. 33 refs., 6 figs., 3 tabs.

Smith, M.B.; Ren, N.K.; Sorrells, G.G.; Teufel, L.W.

1985-01-01T23:59:59.000Z

27

Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field  

E-Print Network (OSTI)

The Earth's magnetic field effect on the azimuthal distribution of extensive air showers (EAS) of cosmic rays has been evaluated using a bulk of the Yakutsk array data. The uniform azimuthal distribution of the EAS event rate is rejected at the significance level 10^(-14). Amplitude of the first harmonics of observed distribution depends on zenith angle as A1=0.2*sin^2(theta) and is almost independent of the primary energy; the phase coincides with the magnetic meridian. Basing upon the value of measured effect, the correction factor has been derived for the particle density depending on a geomagnetic parameter of a shower.

A. A. Ivanov; V. P. Egorova; V. A. Kolosov; A. D. Krasilnikov; M. I. Pravdin; I. Ye. Sleptsov

1999-03-23T23:59:59.000Z

28

Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry  

E-Print Network (OSTI)

Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry using energy flow method Azimuthal angle distribution at Q2 >100 GeV2 Energy flow method.Ukleja on behalf of the ZEUS Collaboration #12; Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I

29

Challenging claims of "elliptic flow" by comparing azimuth quadrupole and jet-related angular correlations from Au-Au collisions at $\\sqrt{s_{NN}} = $ 62 and 200 GeV  

E-Print Network (OSTI)

Background: A component of azimuth correlations from high-energy heavy ion collisions varying as $\\cos(2\\phi)$ and denoted by symbol $v_2$ is conventionally interpreted to represent "elliptic flow," a hydrodynamic manifestation of the initial-state \\aa overlap geometry. Several numerical methods are used to estimate $v_2$, resulting in various combinations of "flow" and "nonflow" that reveal systematic biases in the $v_2$ estimates. QCD jets contribute strongly to azimuth correlations and specifically to the $\\cos(2\\phi)$ component. Purpose: We question the extent of jet-related ("nonflow") bias in and hydrodynamic "flow" interpretations of $v_2$ measurements. Method: We introduce two-dimensional (2D) model fits to angular correlation data that distinguish accurately between jet-related correlation components and a {\\em nonjet azimuth quadrupole} that might represent "elliptic flow" if that were relevant. We compare measured jet-related and "flow"-related data systematics and determine the jet-related contribution to $v_2$ measurements. Results: Jet structure does introduce substantial bias to conventional $v_2$ measurements, making interpretation difficult. The nonjet quadrupole exhibits very simple systematics on centrality and collision energy---the two variables factorize. Within a \\auau centrality interval where jets show no indication of rescattering or medium effects the nonjet quadrupole amplitude rises to 60% of its maximum value. Conclusions: Disagreements between nonjet quadrupole systematics and hydro theory expectations, the large quadrupole amplitudes observed in more-peripheral \\auau collisions and a significant nonzero value in \

Thomas A. Trainor; David T. Kettler; Duncan J. Prindle; R. L. Ray

2013-02-01T23:59:59.000Z

30

Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons  

E-Print Network (OSTI)

Azimuthal asymmetries in semi-inclusive production of positive (h^+) and negative hadrons (h^-) have been measured by scattering 160 GeV muons off longitudinally polarised deuterons at CERN. The asymmetries were decomposed in several terms according to their expected modulation in the azimuthal angle phi of the outgoing hadron. Each term receives contributions from one or several spin and transverse-momentum-dependent parton distribution and fragmentation functions. The amplitudes of all phi-modulation terms of the hadron asymmetries integrated over the kinematic variables are found to be consistent with zero within statistical errors, while the constant terms are nonzero and equal for h^+ and h^- within the statistical errors. The dependencies of the phi-modulated terms versus the Bjorken momentum fraction x, the hadron fractional momentum z, and the hadron transverse momentum p_h^T were studied. The x dependence of the constant terms for both positive and negative hadrons is in agreement with the longitudin...

Alekseev, M G; Alexandrov, Yu; Alexeev, G D; Amoroso, A; Austregesilo, A; Bade?ek, B; Balestra, F; Barth, J; Baum, G; Bedfer, Y; Bernhard, J; Bertini, R; Bettinelli, M; Birsa, R; Bisplinghoff, J; Bordalo, P; Bradamante, F; Bravar, A; Bressan, A; Brona, G; Burtin, E; Bussa, M P; Chaberny, D; Chiosso, M; Chung, S U; Cicuttin, A; Colantoni, M; Crespo, M L; Dalla Torre, S; Das, S; Dasgupta, S S; Denisov, O Yu; Dhara, L; Diaz, V; Donskov, S V; Doshita, N; Duic, V; Dünnweber, W; Efremov, A; El Alaoui, A; Eversheim, P D; Eyrich, W; Faessler, M; Ferrero, A; Filin, A; Finger, M; Finger, M Jr; Fischer, H; Franco, C; Friedrich, J M; Garfagnini, R; Gautheron, F; Gavrichtchouk, O P; Gazda, R; Gerassimov, S; Geyer, R; Giorgi, M; Gnesi, I; Gobbo, B; Goertz, S; Grabmüller, S; Grasso, A; Grube, B; Gushterski, R; Guskov, A; Haas, F; von Harrach, D; Hasegawa, T; Heinsius, F H; Herrmann, F; Heß, C; Hinterberger, F; Horikawa, N; Höppner, Ch; d’Hose, N; Ilgner, C; Ishimoto, S; Ivanov, O; Ivanshin, Yu; Iwata, T; Jahn, R; Jasinski, P; Jegou, G; Joosten, R; Kabuß, E; Kang, D; Ketzer, B; Khaustov, G V; Khokhlov, Yu A; Kisselev, Yu; Klein, F; Klimaszewski, K; Koblitz, S; Koivuniemi, J H; Kolosov, V N; Kondo, K; Königsmann, K; Konopka, R; Konorov, I; Konstantinov, V F; Korzenev, A; Kotzinian, A M; Kouznetsov, O; Kowalik, K; Krämer, M; Kral, A; Kroumchtein, Z V; Kuhn, R; Kunne, F; Kurek, K; Lauser, L; Le Goff, J M; Lednev, A A; Lehmann, A; Levorato, S; Lichtenstadt, J; Liska, T; Maggiora, A; Maggiora, M; Magnon, A; Mallot, G K; Mann, A; Marchand, C; Martin, A; Marzec, J; Massmann, F; Matsuda, T; Meyer, W; Michigami, T; Mikhailov, Yu V; Moinester, M A; Mutter, A; Nagaytsev, A; Nagel, T; Nassalski, J; Negrini, T; Nerling, F; Neubert, S; Neyret, D; Nikolaenko, V I; Nunes, A S; Olshevsky, A G; Ostrick, M; Padee, A; Panknin, R; Panzieri, D; Parsamyan, B; Paul, S; Pawlukiewicz-Kaminska, B; Perevalova, E; Pesaro, G; Peshekhonov, D V; Piragino, G; Platchkov, S; Pochodzalla, J; Polak, J; Polyakov, V A; Pontecorvo, G; Pretz, J; Quintans, C; Rajotte, J F; Ramos, S; Rapatsky, V; Reicherz, G; Richter, A; Robinet, F; Rocco, E; Rondio, E; Ryabchikov, D I; Samoylenko, V D; Sandacz, A; Santos, H; Sapozhnikov, M G; Sarkar, S; Savin, I A; Sbrizzai, G; Schiavon, P; Schill, C; Schlüter, T; Schmitt, L; Schopferer, S; Schröder, W; Shevchenko, O Yu; Siebert, H W; Silva, L; Sinha, L; Sissakian, A N; Slunecka, M; Smirnov, G I; Sosio, S; Sozzi, F; Srnka, A; Stolarski, M; Sulc, M; Sulej, R; Takekawa, S; Tessaro, S; Tessarotto, F; Teufel, A; Tkatchev, L G; Uhl, S; Uman, I; Virius, M; Vlassov, N V; Vossen, A; Weitzel, Q; Windmolders, R; Wislicki, W; Wollny, H; Zaremba, K; Zavertyaev, M; Zemlyanichkina, E; Ziembicki, M; Zhao, J; Zhuravlev, N; Zvyagin, A; 10.1140/epjc/s10052-010-1461-9

2010-01-01T23:59:59.000Z

31

Measurement of J/? Azimuthal Anisotropy in Au+Au Collisions at ?s[subscript NN]=200??GeV  

E-Print Network (OSTI)

The measurement of J/? azimuthal anisotropy is presented as a function of transverse momentum for different centralities in Au+Au collisions at ?s[subscript NN]=200??GeV. The measured J/? elliptic flow is consistent with ...

Balewski, Jan T.

32

Away-side azimuthal distribution in a Markovian parton scattering model  

E-Print Network (OSTI)

An event generator is constructed on the basis of a model of multiple scattering of partons so that the trajectory of a parton traversing a dense and expanding medium can be tracked. The parameters in the code are adjusted to fit the \\Delta\\phi azimuthal distribution on the far side when the trigger momentum is in the non-perturbative region, p_T(trigger)trigger momentum with \\pt(trigger) >8 GeV/c, the model reproduces the single-peak structure observed by STAR without invoking any new dynamical mechanism.

Charles B. Chiu; Rudolph C. Hwa

2006-09-14T23:59:59.000Z

33

Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC  

E-Print Network (OSTI)

We present the measurements of particle pair yields per trigger particle obtained from di-hadron azimuthal correlations in pp collisions at sqrt(s) = 0.9, 2.76, and 7 TeV recorded with the ALICE detector. The yields are studied as a function of the charged particle multiplicity. Taken together with the single particle yields the pair yields provide information about parton fragmentation at low transverse momenta, as well as on the contribution of multiple parton interactions to particle production. Data are compared to calculations using the PYTHIA6, PYTHIA8, and PHOJET event generators.

ALICE Collaboration

2013-07-04T23:59:59.000Z

34

Interval Data Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Interval Data Systems Inc Interval Data Systems Inc Jump to: navigation, search Name Interval Data Systems Inc Address 135 Beaver Street Place Waltham, Massachusetts Zip 02452 Sector Efficiency Product Efficiency and monitoring solutions for buildings Website http://www.intdatsys.com/ Coordinates 42.384614°, -71.207508° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.384614,"lon":-71.207508,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

35

Exploration of jet energy loss via direct $?$-charged particle azimuthal correlation measurements  

E-Print Network (OSTI)

The multiplicities of charged particles azimuthally associated with direct photons and $\\pi^{0}$ have been measured for Au+Au, p+p, and d+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV in the STAR experiment. Charged particles with transverse momentum 0.5 $direct photons and $\\pi^{0}$ of high transverse momentum 8 $direct $\\gamma$ in central Au+Au relative to p+p and d+Au are similar and constant with direct photon fractional energy $z_{T}$ ($z_{T}=p_{T}^{h^{\\pm}}/p_{T}^{\\gamma}$). The measured suppressions of the associated yields with direct $\\gamma$ are comparable to those with $\\pi^{0}$. The data are compared to theoretical predictions.

A. M. Hamed

2009-07-26T23:59:59.000Z

36

Multiparticle azimuthal correlations of negative pions in nucleus-nucleus collisions  

Science Conference Proceedings (OSTI)

Multiparticle azimuthal correlations of {pi}{sup -} mesons have been studied in dC, HeC, CC, CNe, MgMg, (d, He)Ta, CCu, CTa, and OPb collisions at momentum of 4.2, 4.5 GeV/c per nucleon within the standard transverse momentum analysis method of P. Danielewicz and G. Odyniec. The data were obtained by SKM-200-GIBS and Propane Bubble Chamber Collaborations of JINR. The axis has been selected in the phase space and with respect to this axis {pi}{sup -} meson correlations were observed. The values of the coefficient of the correlations linearly depend on the mass numbers of projectile (A{sub P}) and target (A{sub T}) nuclei. The Quark-Gluon String Model satisfactorily describes the experimental results.

Chkhaidze, L. V., E-mail: ichkhaidze@yahoo.com; Djobava, T. D.; Kharkhelauri, L. L. [Tbilisi State University, High Energy Physics Institute (Georgia); Kladnitskaya, E. N. [Joint Institute for Nuclear Research (Russian Federation)

2012-07-15T23:59:59.000Z

37

Modeling interval order structures with partially commutative monoids  

Science Conference Proceedings (OSTI)

Interval order structures are useful tools to model abstract concurrent histories, i.e. sets of equivalent system runs, when system runs are modeled with interval orders. The paper shows how interval order structures can be modeled by partially ...

Ryszard Janicki; Xiang Yin; Nadezhda Zubkova

2012-09-01T23:59:59.000Z

38

Henry Hub natural gas price and NYMEX 95% confidence intervals ...  

U.S. Energy Information Administration (EIA)

Henry Hub natural gas price and NYMEX 95% confidence intervals January 2007 – October 2009 Short-Term Energy Outlook Note: Confidence intervals for the following ...

39

Azimuthal single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarised hydrogen target  

E-Print Network (OSTI)

Azimuthal single-spin asymmetries (SSA) in semi-inclusive electroproduction of charged pions and kaons in deep-inelastic scattering of positrons on a transversely polarised hydrogen target were observed. SSA amplitudes for both the Collins and the Sivers mechanism are presented.

Markus Diefenthaler

2006-12-06T23:59:59.000Z

40

The Inflow to Tropical Cyclone Humberto (2001) as Viewed with Azimuth–Height Surfaces over Three Days  

Science Conference Proceedings (OSTI)

The deployment of 228 global positioning system dropwindsondes (GPS sondes), over three consecutive days in Tropical Cyclone Humberto (2001), allows for the creation of azimuth–height (–z) surfaces from sea level to 3-km altitude at 0.25° and 0.5°...

Gary M. Barnes; Klaus P. Dolling

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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41

Recent Measurements of the cos( n? h ( Azimuthal Modulations of the Unpolarized Deep Inelastic Scattering Cross?section at HERMES  

Science Conference Proceedings (OSTI)

The cross section for hadron production in deep?inelastic lepton scattering contains azimuthal modulations which can be related to transverse momentum dependent (TMD) distribution and fragmentation functions. The former provide a picture of how the quarks are moving within nucleons. Specifically

Rebecca Lamb; Francesca Giordano; on behalf of the HERMES Collaboration

2009-01-01T23:59:59.000Z

42

Asymptotic confidence intervals for Poisson regression  

Science Conference Proceedings (OSTI)

Let (X,Y) be a R^dxN"0-valued random vector where the conditional distribution of Y given X=x is a Poisson distribution with mean m(x). We estimate m by a local polynomial kernel estimate defined by maximizing a localized log-likelihood function. We ... Keywords: 62G08, 62G15, 65H12, Confidence interval, Local polynomial kernel estimate, Poisson regression

Michael Kohler; Adam Krzy?ak

2007-05-01T23:59:59.000Z

43

Trends in Yield and Azimuthal Shape Modification in Dihadron Correlations in Relativistic Heavy Ion Collisions  

E-Print Network (OSTI)

Fast parton probes produced by hard scattering and embedded within collisions of large nuclei have shown that partons suffer large energy loss and that the produced medium may respond collectively to the lost energy. We present measurements of neutral pion trigger particles at transverse momenta p^t_T = 4-12 GeV/c and associated charged hadrons (p^a_T = 0.5-7 GeV/c) as a function of relative azimuthal angle Delta Phi at midrapidity in Au+Au and p+p collisions at sqrt(s_NN) = 200 GeV. These data lead to two major observations. First, the relative angular distribution of low momentum hadrons, whose shape modification has been interpreted as a medium response to parton energy loss, is found to be modified only for p^t_T < 7 GeV/c. At higher p^t_T, the data are consistent with unmodified or very weakly modified shapes, even for the lowest measured p^a_T. This observation presents a quantitative challenge to medium response scenarios. Second, the associated yield of hadrons opposite to the trigger particle in Au+Au relative to that in p+p (I_AA) is found to be suppressed at large momentum (IAA ~ 0.35-0.5), but less than the single particle nuclear modification factor (R_AA ~0.2).

A. Adare; S. Afanasiev; C. Aidala; N. N. Ajitanand; Y. Akiba; H. Al-Bataineh; J. Alexander; T. Alho; K. Aoki; L. Aphecetche; Y. Aramaki; J. Asai; E. T. Atomssa; R. Averbeck; T. C. Awes; B. Azmoun; V. Babintsev; M. Bai; G. Baksay; L. Baksay; A. Baldisseri; K. N. Barish; P. D. Barnes; B. Bassalleck; A. T. Basye; S. Bathe; S. Batsouli; V. Baublis; C. Baumann; A. Bazilevsky; S. Belikov; R. Belmont; R. Bennett; A. Berdnikov; Y. Berdnikov; A. A. Bickley; J. G. Boissevain; J. S. Bok; H. Borel; K. Boyle; M. L. Brooks; H. Buesching; V. Bumazhnov; G. Bunce; S. Butsyk; C. M. Camacho; S. Campbell; B. S. Chang; W. C. Chang; J. -L. Charvet; C. -H. Chen; S. Chernichenko; C. Y. Chi; M. Chiu; I. J. Choi; R. K. Choudhury; P. Christiansen; T. Chujo; P. Chung; A. Churyn; O. Chvala; V. Cianciolo; Z. Citron; B. A. Cole; M. Connors; P. Constantin; M. Csanád; T. Csörg?; T. Dahms; S. Dairaku; I. Danchev; K. Das; A. Datta; G. David; A. Denisov; D. d'Enterria; A. Deshpande; E. J. Desmond; O. Dietzsch; A. Dion; M. Donadelli; O. Drapier; A. Drees; K. A. Drees; A. K. Dubey; M. Durham; A. Durum; D. Dutta; V. Dzhordzhadze; S. Edwards; Y. V. Efremenko; F. Ellinghaus; T. Engelmore; A. Enokizono; H. En'yo; S. Esumi; K. O. Eyser; B. Fadem; D. E. Fields; M. Finger; \\, Jr.; M. Finger; F. Fleuret; S. L. Fokin; Z. Fraenkel; J. E. Frantz; A. Franz; A. D. Frawley; K. Fujiwara; Y. Fukao; T. Fusayasu; I. Garishvili; A. Glenn; H. Gong; M. Gonin; J. Gosset; Y. Goto; R. Granier de Cassagnac; N. Grau; S. V. Greene; M. Grosse Perdekamp; T. Gunji; H. -Å. Gustafsson; A. Hadj Henni; J. S. Haggerty; I. Hahn; H. Hamagaki; J. Hamblen; J. Hanks; R. Han; E. P. Hartouni; K. Haruna; E. Haslum; R. Hayano; M. Heffner; S. Hegyi; T. K. Hemmick; T. Hester; X. He; J. C. Hill; M. Hohlmann; W. Holzmann; K. Homma; B. Hong; T. Horaguchi; D. Hornback; S. Huang; T. Ichihara; R. Ichimiya; J. Ide; Y. Ikeda; K. Imai; J. Imrek; M. Inaba; D. Isenhower; M. Ishihara; T. Isobe; M. Issah; A. Isupov; D. Ivanischev; B. V. Jacak; J. Jia; J. Jin; B. M. Johnson; K. S. Joo; D. Jouan; D. S. Jumper; F. Kajihara; S. Kametani; N. Kamihara; J. Kamin; J. H. Kang; J. Kapustinsky; D. Kawall; M. Kawashima; A. V. Kazantsev; T. Kempel; A. Khanzadeev; K. M. Kijima; J. Kikuchi; B. I. Kim; D. H. Kim; D. J. Kim; E. -J. Kim; E. Kim; S. H. Kim; Y. J. Kim; E. Kinney; K. Kiriluk; A. Kiss; E. Kistenev; J. Klay; C. Klein-Boesing; L. Kochenda; B. Komkov; M. Konno; J. Koster; D. Kotchetkov; A. Kozlov; A. Král; A. Kravitz; G. J. Kunde; K. Kurita; M. Kurosawa; M. J. Kweon; Y. Kwon; G. S. Kyle; R. Lacey; Y. S. Lai; J. G. Lajoie; D. Layton; A. Lebedev; D. M. Lee; J. Lee; K. B. Lee; K. Lee; K. S. Lee; T. Lee; M. J. Leitch; M. A. L. Leite; E. Leitner; B. Lenzi; P. Liebing; L. A. Linden Levy; T. Liška; A. Litvinenko; H. Liu; M. X. Liu; X. Li; B. Love; R. Luechtenborg; D. Lynch; C. F. Maguire; Y. I. Makdisi; A. Malakhov; M. D. Malik; V. I. Manko; E. Mannel; Y. Mao; L. Mašek; H. Masui; F. Matathias; M. McCumber; P. L. McGaughey; N. Means; B. Meredith; Y. Miake; A. Mignerey; P. Mikeš; K. Miki; A. Milov; M. Mishra; J. T. Mitchell; A. K. Mohanty; Y. Morino; A. Morreale; D. P. Morrison; T. V. Moukhanova; D. Mukhopadhyay; J. Murata; S. Nagamiya; J. L. Nagle; M. Naglis; M. I. Nagy; I. Nakagawa; Y. Nakamiya; T. Nakamura; K. Nakano; J. Newby; M. Nguyen; T. Niita; R. Nouicer; A. S. Nyanin; E. O'Brien; S. X. Oda; C. A. Ogilvie; H. Okada; K. Okada; M. Oka; Y. Onuki; A. Oskarsson; M. Ouchida; K. Ozawa; R. Pak; A. P. T. Palounek; V. Pantuev; V. Papavassiliou; I. Park; J. Park; S. K. Park; W. J. Park; S. F. Pate; H. Pei; J. -C. Peng; H. Pereira; V. Peresedov; D. Yu. Peressounko; C. Pinkenburg; R. P. Pisani; M. Proissl; M. L. Purschke; A. K. Purwar; H. Qu; J. Rak; A. Rakotozafindrabe; I. Ravinovich; K. F. Read; S. Rembeczki; K. Reygers; V. Riabov; Y. Riabov; E. Richardson; D. Roach; G. Roche; S. D. Rolnick; M. Rosati; C. A. Rosen; S. S. E. Rosendahl; P. Rosnet; P. Rukoyatkin; P. Ruži?ka; V. L. Rykov; B. Sahlmueller; N. Saito; T. Sakaguchi; S. Sakai; K. Sakashita; V. Samsonov; S. Sano; T. Sato; S. Sawada; K. Sedgwick; J. Seele; R. Seidl; A. Yu. Semenov; V. Semenov; R. Seto; D. Sharma; I. Shein; T. -A. Shibata; K. Shigaki; M. Shimomura; K. Shoji; P. Shukla; A. Sickles; C. L. Silva; D. Silvermyr; C. Silvestre; K. S. Sim; B. K. Singh; C. P. Singh; V. Singh; M. Slune?ka; A. Soldatov; R. A. Soltz; W. E. Sondheim; S. P. Sorensen; I. V. Sourikova; N. A. Sparks; F. Staley; P. W. Stankus; E. Stenlund; M. Stepanov; A. Ster; S. P. Stoll; T. Sugitate; C. Suire; A. Sukhanov; J. Sziklai; E. M. Takagui; A. Taketani; R. Tanabe; Y. Tanaka; K. Tanida; M. J. Tannenbaum; S. Tarafdar; A. Taranenko; P. Tarján; H. Themann; T. L. Thomas; M. Togawa; A. Toia; L. Tomášek; Y. Tomita; H. Torii; R. S. Towell; V-N. Tram; I. Tserruya; Y. Tsuchimoto; C. Vale; H. Valle; H. W. van Hecke; E. Vazquez-Zambrano; A. Veicht; J. Velkovska; R. Vertesi

2010-02-04T23:59:59.000Z

44

Azimuthal modulation of cosmic ray flux as an effect of geomagnetic field in the ARGO-YBJ experiment  

E-Print Network (OSTI)

The geomagnetic field causes not only the East-West effect on the primary cosmic rays but also affects the trajectories of the secondary charged particles in the shower, causing their lateral distribution to be stretched along certain directions. Thus both the density of the secondaries near the shower axis and the trigger efficiency of a detector array decrease. The effect depends on the age and on the direction of the showers, thus involving the measured azimuthal distribution. Here the non-uniformity of the azimuthal distribution of the reconstructed events in the ARGO-YBJ experiment is deeply investigated for different zenith angles on the light of this effect. The influence of the geomagnetic field as well as geometric effects are studied by means of a Monte Carlo simulation.

Bernardini, P; He, H H; Mancarella, G; Perrone, L; Surdo, A

2011-01-01T23:59:59.000Z

45

Measurable Maximal Energy and Minimal Time Interval  

E-Print Network (OSTI)

The possibility of finding the measurable maximal energy and the minimal time interval is discussed in different quantum aspects. It is found that the linear generalized uncertainty principle (GUP) approach gives a non-physical result. Based on large scale Schwarzshild solution, the quadratic GUP approach is utilized. The calculations are performed at the shortest distance, at which the general relativity is assumed to be a good approximation for the quantum gravity and at larger distances, as well. It is found that both maximal energy and minimal time have the order of the Planck time. Then, the uncertainties in both quantities are accordingly bounded. Some physical insights are addressed. Also, the implications on the physics of early Universe and on quantized mass are outlined. The results are related to the existence of finite cosmological constant and minimum mass (mass quanta).

Eiman Abou El Dahab; Abdel Nasser Tawfik

2014-01-14T23:59:59.000Z

46

WTI Crude Oil Price: Base Case and 95% Confidence Interval  

U.S. Energy Information Administration (EIA)

WTI Crude Oil Price: Base Case and 95% Confidence Interval. Sources: History: EIA; Projections: Short-Term Energy Outlook, December 2000. Projections

47

Head shock vs Mach cone: azimuthal correlations from 2 to 3 parton processes in relativistic heavy-ion collisions  

E-Print Network (OSTI)

We study the energy-momentum deposited by fast moving partons within a medium using linearized viscous hydrodynamics. The particle distribution produced by this energy-momentum is computed using the Cooper-Frye formalism. We show that for the conditions arising in heavy-ion collisions, energy momentum is preferentially deposited along the head shock of the fast moving partons. We also show that the double hump in the away-side of azimuthal correlations can be produced by two (instead of one) away-side partons that deposit their energy-momentum along their directions of motion. These partons are originated in the in-medium hard scattering in 2 to 3 processes. We compare the results of the analysis to azimuthal angular correlations from PHENIX and show that the calculation reproduces the data systematics of a decreasing away-side correlation when the momentum of the associated hadron becomes closer to the momentum of the leading hadron. This scenario seems to avoid the shortcomings of the Mach cone as the origin of the double-hump structure in the away-side

Alejandro Ayala; Isabel Dominguez; Maria Elena Tejeda-Yeomans

2012-12-05T23:59:59.000Z

48

Brief paper: Near optimal interval observers bundle for uncertain bioreactors  

Science Conference Proceedings (OSTI)

In this paper we design an interval observer for the estimation of unmeasured variables of uncertain bioreactors. The observer is based on a bounded error observer, as proposed in [Lemesle, V., & Gouze, J.-L. (2005). Hybrid bounded error observers for ... Keywords: Bounded error observers, Interval observers, Uncertain systems, Wastewater treatment

Marcelo Moisan; Olivier Bernard; Jean-Luc Gouzé

2009-01-01T23:59:59.000Z

49

2011 Special Issue: Reliable prediction intervals with regression neural networks  

Science Conference Proceedings (OSTI)

This paper proposes an extension to conventional regression neural networks (NNs) for replacing the point predictions they produce with prediction intervals that satisfy a required level of confidence. Our approach follows a novel machine learning framework, ... Keywords: Confidence measures, Conformal Prediction, Neural networks, Prediction intervals, Regression, Total Electron Content

Harris Papadopoulos; Haris Haralambous

2011-10-01T23:59:59.000Z

50

Efficient Algorithms for Heavy-Tail Analysis under Interval Uncertainty  

E-Print Network (OSTI)

Efficient Algorithms for Heavy-Tail Analysis under Interval Uncertainty Vladik Kreinovich1 heavy-tailed distri- butions, i.e., distributions in which (x) decreases as (x) x- . To properly take for computing these ranges. Keywords: heavy-tailed distributions, interval uncertainty, efficient algorithms

Kreinovich, Vladik

51

Thesis: a generic, collaborative framework for interval constraint solving  

Science Conference Proceedings (OSTI)

The paper abstracts the contents of a PhD dissertation entitled A Generic, Collaborative Framework for Interval Constraint Solving which has been recently defended. This thesis presents a generic framework for defining and solving interval constraints ... Keywords: constraint, cooperation, indexical, lattice, propagation

Antonio J. Fernández

2004-07-01T23:59:59.000Z

52

A Generic, Collaborative Framework for Interval Constraint Solving: Thesis  

Science Conference Proceedings (OSTI)

The paper abstracts the contents of a PhD dissertation entitled A Generic, Collaborative Framework for Interval Constraint Solving which has been recently defended. This thesis presents a generic framework for defining and solving interval constraints ... Keywords: Constraint, cooperation, indexical, lattice, propagation

Antonio J. Fernández

2004-08-01T23:59:59.000Z

53

Azimuthal anisotropy in Au+Au collisions at {radical}s{sub NN} = 200 GeV  

Science Conference Proceedings (OSTI)

The results from the STAR Collaboration on directed flow (v{sub 1}), elliptic flow (v{sub 2}), and the fourth harmonic (v{sub 4}) in the anisotropic azimuthal distribution of particles from Au+Au collisions at {radical}s{sub NN} = 200 GeV are summarized and compared with results from other experiments and theoretical models. Results for identified particles are presented and fit with a Blast Wave model. For v{sub 2}, scaling with the number of constituent quarks and parton coalescence is discussed. For v{sub 4}, scaling with v{sub 22} and quark coalescence predictions for higher harmonic flow is discussed. The different anisotropic flow analysis methods are compared and nonflow effects are extracted from the data. For v{sub 2}, scaling with the number of constituent quarks and parton coalescence are discussed. For v{sub 2}{sup 2} and quark coalescence are discussed.

Adams, J.; Aggarwal, M.M.; Ahammed, Z.; Amonett, J.; Anderson, B.D.; Akhipkin, D.; Averichev, G.S.; Badyal, S.K.; Bai, Y.; Balewski, J.; Barannikova, O.; Barnby, L.S.; Baudot, J.; Bekele, S.; Belaga, V.V.; Bellwied, R.; Berger, J.; Bezverkhny, B.I.; Bharadwaj, S.; Bhasin, A.; Bhati, A.K.; Bhatia, V.S.; Bichsel, H.; Billmeier, A.; Bland, L.C.; Blyth, C.O.; Bonner, B.E.; Botje, M.; Boucham, A.; Brandin, A.V.; Bravar, A.; Bystersky, M.; Cadman, R.V.; Cai, X.Z.; Caines, H.; Calderon de la Barca Sanchez, M.; Carroll, J.; Castillo, J.; Cebra, D.; Chajecki, Z.; Chaloupka, P.; Chattopdhyay, S.; Chen, H.F.; Chen, Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Christie, W.; Coffin, J.P.; Cormier, T.M.; Cramer, J.G.; Crawford, H.J.; Das, D.; Das, S.; De Moura, M.M.; Derevschikov, A.A.; Didenko, L.; Dietel, T.; Dogra, S.M.; Dong, W.J.; Dong, X.; Draper, J.E.; Du, F.; Dubey, A.K.; Dunin, V.B.; Dunlop, J.C.; Dutta Mazumdar, M.R.; Eckardt, V.; Edwards, W.R.; Efimov, L.G.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Fachini, P.; Faivre, J.; Fatemi, R.; Fedorisin, J.; Filimonov, K.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Foley, K.J.; Fomenko, K.; Fu, J.; Gagliardi, C.A.; Gans, J.; Ganti, M.S.; Gaudichet, L.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gonzalez, J.E.; Grachov, O.; Grebenyuk, O.; Grosnick, D.; Guertin, S.M.; Guo, Y.; Gupta, A.; Gutierrez, T.D.; Hallman, T.J.; Hamed, A.; Hardtke, D.; Harris, J.W.; Heinz, M.; Henry, T.W.; Hepplemann, S.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffmann, G.W.; Huang, H.Z.; Huang, S.L.; Hughes, E.W.; Humanic, T.J.; Igo, G.; Ishihara, A.; Jacobs, P.; Jacobs, W.W.; Janik, M.; Jiang, H.; Jones, P.G.; Judd, E.G.; Kabana, S.; Kang, K.; Kaplan, M.; Keane, D.; Khodyrev, V.Yu.; Kiryluk, J.; Kisiel, A.; Kislov, E.M.; Klay, J.; Klein, S.R.; Klyachko, A.; Koetke, D.D.; Kollegger, T.; Kopytine, M.; Kotchenda, L.; Kramer, M.; Kravtsov, P.; Kravtsov, V.I.; Krueger, K.; Kuhn, C.; Kulikov, A.I.; et al.

2004-09-29T23:59:59.000Z

54

Computer Interval Arithmetic: Definition and Proof of Correct Implementation  

Science Conference Proceedings (OSTI)

A definition is given of computer interval arithmetic suitable for implementation on a digital computer. Some computational properties and simplifications are derived. An ALGOL code segment is proved to be a correct implementation of the definition on ...

Donald I. Good; Ralph L. London

1970-10-01T23:59:59.000Z

55

Foundation for a time interval access control model  

Science Conference Proceedings (OSTI)

A new model for representing temporal access control policies is introduced. In this model, temporal authorizations are represented by time attributes associated with both subjects and objects, and a “time interval access graph.” The time ...

Francis B. Afinidad; Timothy E. Levin; Cynthia E. Irvine; Thuy D. Nguyen

2005-09-01T23:59:59.000Z

56

Experimental uncertainty estimation and statistics for data having interval uncertainty.  

SciTech Connect

This report addresses the characterization of measurements that include epistemic uncertainties in the form of intervals. It reviews the application of basic descriptive statistics to data sets which contain intervals rather than exclusively point estimates. It describes algorithms to compute various means, the median and other percentiles, variance, interquartile range, moments, confidence limits, and other important statistics and summarizes the computability of these statistics as a function of sample size and characteristics of the intervals in the data (degree of overlap, size and regularity of widths, etc.). It also reviews the prospects for analyzing such data sets with the methods of inferential statistics such as outlier detection and regressions. The report explores the tradeoff between measurement precision and sample size in statistical results that are sensitive to both. It also argues that an approach based on interval statistics could be a reasonable alternative to current standard methods for evaluating, expressing and propagating measurement uncertainties.

Kreinovich, Vladik (Applied Biomathematics, Setauket, New York); Oberkampf, William Louis (Applied Biomathematics, Setauket, New York); Ginzburg, Lev (Applied Biomathematics, Setauket, New York); Ferson, Scott (Applied Biomathematics, Setauket, New York); Hajagos, Janos (Applied Biomathematics, Setauket, New York)

2007-05-01T23:59:59.000Z

57

CSL Model Checking of Biochemical Networks with Interval Decision Diagrams  

Science Conference Proceedings (OSTI)

This paper presents an Interval Decision Diagram based approach to symbolic CSL model checking of Continuous Time Markov Chains which are derived from stochastic Petri nets. Matrix-vector and vector-matrix multiplication are the major tasks of exact ...

Martin Schwarick; Monika Heiner

2009-08-01T23:59:59.000Z

58

Computational fluid dynamics analyses of lateral heat conduction, coolant azimuthal mixing and heat transfer predictions in a BR2 fuel assembly geometry.  

SciTech Connect

To support the analyses related to the conversion of the BR2 core from highly-enriched (HEU) to low-enriched (LEU) fuel, the thermal-hydraulics codes PLTEMP and RELAP-3D are used to evaluate the safety margins during steady-state operation (PLTEMP), as well as after a loss-of-flow, loss-of-pressure, or a loss of coolant event (RELAP). In the 1-D PLTEMP and RELAP simulations, conduction in the azimuthal and axial directions is not accounted. The very good thermal conductivity of the cladding and the fuel meat and significant temperature gradients in the lateral directions (axial and azimuthal directions) could lead to a heat flux distribution that is significantly different than the power distribution. To evaluate the significance of the lateral heat conduction, 3-D computational fluid dynamics (CFD) simulations, using the CFD code STAR-CD, were performed. Safety margin calculations are typically performed for a hot stripe, i.e., an azimuthal region of the fuel plates/coolant channel containing the power peak. In a RELAP model, for example, a channel between two plates could be divided into a number of RELAP channels (stripes) in the azimuthal direction. In a PLTEMP model, the effect of azimuthal power peaking could be taken into account by using engineering factors. However, if the thermal mixing in the azimuthal direction of a coolant channel is significant, a stripping approach could be overly conservative by not taking into account this mixing. STAR-CD simulations were also performed to study the thermal mixing in the coolant. Section II of this document presents the results of the analyses of the lateral heat conduction and azimuthal thermal mixing in a coolant channel. Finally, PLTEMP and RELAP simulations rely on the use of correlations to determine heat transfer coefficients. Previous analyses showed that the Dittus-Boelter correlation gives significantly more conservative (lower) predictions than the correlations of Sieder-Tate and Petukhov. STAR-CD 3-D simulations were performed to compare heat transfer predictions from CFD and the correlations. Section III of this document presents the results of this analysis.

Tzanos, C. P.; Dionne, B. (Nuclear Engineering Division)

2011-05-23T23:59:59.000Z

59

Fuzzy and interval finite element method for heat conduction problem  

E-Print Network (OSTI)

Traditional finite element method is a well-established method to solve various problems of science and engineering. Different authors have used various methods to solve governing differential equation of heat conduction problem. In this study, heat conduction in a circular rod has been considered which is made up of two different materials viz. aluminum and copper. In earlier studies parameters in the differential equation have been taken as fixed (crisp) numbers which actually may not. Those parameters are found in general by some measurements or experiments. So the material properties are actually uncertain and may be considered to vary in an interval or as fuzzy and in that case complex interval arithmetic or fuzzy arithmetic has to be considered in the analysis. As such the problem is discretized into finite number of elements which depend on interval/fuzzy parameters. Representation of interval/fuzzy numbers may give the clear picture of uncertainty. Hence interval/fuzzy arithmetic is applied in the finite element method to solve a steady state heat conduction problem. Application of fuzzy finite element method in the said problem gives fuzzy system of linear equations in general. Here new methods have also been proposed to handle such type of fuzzy system of linear equations. Corresponding results are computed and has been reported here.

Sarangam Majumdar; Sukanta Nayak; S. Chakraverty

2012-09-26T23:59:59.000Z

60

Detection of a thin sheet magnetic anomaly by squid-gradiometer systems: possibility of hydrofracture azimuth determination  

DOE Green Energy (OSTI)

A study of the signal physics of magnetic anomaly detection was carried out by superconducting gradiometer and magnetometer loop systems with SQUID sensors for possible application to the LASL geothermal energy program. In particular, the crack produced by hydrofracture of a deep HDR geothermal borehole would be filled with a magnetic material such as ferrofluid. When polarized by the earth's field, this material would produce a localized crack magnetic anomaly which is characteristic of the azimuth of the vertical crack with respect to magnetic north. Signatures of the anomaly would be determined by taking rotation data before and after filling the crack with magnetic material. A mathematical description was found for these signatures. To test the theory and the feasibility of the idea, the deep borehole vertical cracks were simulated by using panels to define sheets 1.5 mm thick, 1.2 m wide, and 2.5 m high. When filled with ferrofluid of suitable magnetic permeability, the local anomaly develops. Signatures were measured with a horizontal axial gradiometer rotated about a vertical axis. Good agreement was found between theory and experiment for aximuths in the east and west quadrants but only fair agreement in the north and south quadrants.

Overton, W.C. Jr.

1978-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Different Approaches to Forecast Interval Time Series: A Comparison in Finance  

Science Conference Proceedings (OSTI)

An interval time series (ITS) is a time series where each period is described by an interval. In finance, ITS can describe the temporal evolution of the high and low prices of an asset throughout time. These price intervals are related to the concept ... Keywords: Artificial neural networks, Exponential smoothing, Interval arithmetic, Interval data, Nearest neighbors methods, Vector autoregressive models

Javier Arroyo; Rosa Espínola; Carlos Maté

2011-02-01T23:59:59.000Z

62

A domain of spacetime intervals in general relativity  

E-Print Network (OSTI)

Beginning from only a countable dense set of events and the causality relation, it is possible to reconstruct a globally hyperbolic spacetime in a purely order theoretic manner. The ultimate reason for this is that globally hyperbolic spacetimes belong to a category that is equivalent to a special category of domains called interval domains.

Keye Martin; Prakash Panangaden

2004-07-26T23:59:59.000Z

63

Evaluating trustworthiness from past performances: interval-based approaches  

Science Conference Proceedings (OSTI)

In many multi-agent systems, especially in the field of e-commerce, the users have to decide whether they sufficiently trust an agent to achieve a certain goal. To help users to make such decisions, an increasing number of trust systems have been developed. ... Keywords: 00, 60, 68, Distrust, Intervals, Possibility theory, Trust

Jonathan Ben-Naim; Henri Prade

2012-03-01T23:59:59.000Z

64

Interval-valued Soft Constraint Problems , M. S. Pini1  

E-Print Network (OSTI)

they may evolve due to market changes; in network traffic analysis, the overwhelming amount of information preference intervals can be useful or necessary are energy trading and network traffic analysis [15], where the data information is usually incomplete or erroneous. In energy trading, costs may be im- precise since

Rossi, Francesca

65

Improving Point and Interval Estimates of Monotone Functions by Rearrangement  

E-Print Network (OSTI)

Suppose that a target function $f_0: \\Bbb{R}^d \\to \\Bbb{R}$ is monotonic, namely, weakly increasing, and an original estimate $\\hat f$ of this target function is available, which is not weakly increasing. Many common estimation methods used in statistics produce such estimates $\\hat f$. We show that these estimates can always be improved with no harm using rearrangement techniques: The rearrangement methods, univariate and multivariate, transform the original estimate to a monotonic estimate $\\hat f^*$, and the resulting estimate is \\textit{closer} to the true curve $f_0$ in common metrics than the original estimate $\\hat f$. The improvement property of the rearrangement also extends to the construction of confidence bands for monotone functions. Let $\\ell$ and $u$ be the lower and upper endpoint functions of a simultaneous confidence interval $[\\ell, u]$ that covers $f_0$ with probability $1-\\alpha$, then the rearranged confidence interval $[\\ell^*, u^*]$, defined by the rearranged lower and upper end-point ...

Chernozhukov, Victor; Galichon, Alfred

2008-01-01T23:59:59.000Z

66

Risk Impact Assessment of Extended Integrated Leak Rate Testing Intervals  

Science Conference Proceedings (OSTI)

This report presents a risk impact assessment for extending integrated leak rate test (ILRT) surveillance intervals to 15 years. The assessment demonstrates that on an industry-wide basis there is small risk associated with the extension, provided that the performance bases and defense-in-depth are maintained. There is an obvious benefit in not performing costly, critical-path, time-consuming tests that provide a limited benefit from a risk perspective.

2008-10-31T23:59:59.000Z

67

Azimuthal correlations between charged hadrons and direct photons at high-p$_{t}$ in $p+p$ and $Au+Au$ collisions at $\\sqrt{s_{NN}}$ = 200 GeV  

E-Print Network (OSTI)

Recent results at STAR for direct $\\gamma$-charged hadron azimuthal correlations in heavy-ion collisions are presented. These correlations are used to study the color charge density of the medium through the medium-induced modification of high-p$_T$ parton fragmentation. Azimuthal correlations of direct photons at high transverse energy 8 $direct $\\gamma$ is smaller than from $\\pi^{0}$ triggers in the same centrality class.

A. M. Hamed

2008-10-21T23:59:59.000Z

68

Delay Dependent Exponential Stability for Fuzzy Recurrent Neural Networks with Interval Time-Varying Delay  

Science Conference Proceedings (OSTI)

In this paper, the problem of delay-dependent exponential stability for fuzzy recurrent neural networks with interval time-varying delay is investigated. The delay interval has been decomposed into multiple non equidistant subintervals, on these interval ... Keywords: Delay decomposition, Fuzzy recurrent neural networks, Interval time-varying delay, Maximum admissible upper bound (MAUB), Maximum exponential convergent rate (MECR)

R. Chandran; P. Balasubramaniam

2013-04-01T23:59:59.000Z

69

GeneDistiller—Distilling Candidate Genes from Linkage Intervals  

E-Print Network (OSTI)

Background: Linkage studies often yield intervals containing several hundred positional candidate genes. Different manual or automatic approaches exist for the determination of the gene most likely to cause the disease. While the manual search is very flexible and takes advantage of the researchers ’ background knowledge and intuition, it may be very cumbersome to collect and study the relevant data. Automatic solutions on the other hand usually focus on certain models, remain ‘‘black boxes’ ’ and do not offer the same degree of flexibility. Methodology: We have developed a web-based application that combines the advantages of both approaches. Information from various data sources such as gene-phenotype associations, gene expression patterns and protein-protein interactions was integrated into a central database. Researchers can select which information for the genes within a candidate interval or for single genes shall be displayed. Genes can also interactively be filtered, sorted and prioritised according to criteria derived from the background knowledge and preconception of the disease under scrutiny. Conclusions: GeneDistiller provides knowledge-driven, fully interactive and intuitive access to multiple data sources. It displays maximum relevant information, while saving the user from drowning in the flood of data. A typical query takes less than two seconds, thus allowing an interactive and explorative approach to the hunt for the candidate gene.

Dominik Seelow; Jana Marie Schwarz; Markus Schuelke

2008-01-01T23:59:59.000Z

70

The Elusive Universal Post-Mortem Interval Formula  

SciTech Connect

The following manuscript details our initial attempt at developing universal post-mortem interval formulas describing human decomposition. These formulas are empirically derived from data collected over the last 20 years from the University of Tennessee's Anthropology Research Facility, in Knoxville, Tennessee, USA. Two formulas were developed (surface decomposition and burial decomposition) based on temperature, moisture, and the partial pressure of oxygen, as being three of the four primary drivers for human decomposition. It is hoped that worldwide application of these formulas to environments and situations not readily studied in Tennessee will result in interdisciplinary cooperation between scientists and law enforcement personnel that will allow for future refinements of these models leading to increased accuracy.

Vass, Arpad Alexander [ORNL

2011-01-01T23:59:59.000Z

71

The Benefits and Challenges of Predictive Interval Forecasts and Verification Graphics for End Users  

Science Conference Proceedings (OSTI)

Two behavioral experiments tested the use of predictive interval forecasts and verification graphics by nonexpert end users. Most participants were able to use a simple key to understand a predictive interval graphic, showing a bracket to indicate ...

Susan Joslyn; Lou Nemec; Sonia Savelli

2013-04-01T23:59:59.000Z

72

Extending Sensor Calibration Intervals in Nuclear Power Plants  

SciTech Connect

Currently in the USA, sensor recalibration is required at every refueling outage, and it has emerged as a critical path item for shortening outage duration. International application of calibration monitoring, such as at the Sizewell B plant in UK, has shown that sensors may operate for eight years, or longer, within calibration tolerances. Online monitoring can be employed to identify those sensors which require calibration, allowing for calibration of only those sensors which need it. The US NRC accepted the general concept of online monitoring for sensor calibration monitoring in 2000, but no plants have been granted the necessary license amendment to apply it. This project addresses key issues in advanced recalibration methodologies and provides the science base to enable adoption of best practices for applying online monitoring, resulting in a public domain standardized methodology for sensor calibration interval extension. Research to develop this methodology will focus on three key areas: (1) quantification of uncertainty in modeling techniques used for calibration monitoring, with a particular focus on non-redundant sensor models; (2) accurate determination of acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and (3) the use of virtual sensor estimates to replace identified faulty sensors to extend operation to the next convenient maintenance opportunity.

Coble, Jamie B.; Meyer, Ryan M.; Ramuhalli, Pradeep; Bond, Leonard J.; Shumaker, Brent; Hashemian, Hash

2012-11-15T23:59:59.000Z

73

Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at $\\sqrt{s_{NN}}$ = 9.2 GeV  

E-Print Network (OSTI)

We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au+Au collisions below the nominal injection energy at the Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance STAR detector at $\\sqrt{s_{NN}}$ = 9.2 GeV from a test run of the collider in the year 2008. Midrapidity results on multiplicity density (dN/dy) in rapidity (y), average transverse momentum (), particle ratios, elliptic flow, and HBT radii are consistent with the corresponding results at similar $\\sqrt{s_{NN}}$ from fixed target experiments. Directed flow measurements are presented for both midrapidity and forward rapidity regions. Furthermore the collision centrality dependence of identified particle dN/dy, , and particle ratios are discussed. These results also demonstrate the readiness of the STAR detector to undertake the proposed QCD critical point search and the exploration of the QCD phase diagram at RHIC.

STAR Collaboration; B. I. Abelev

2009-09-23T23:59:59.000Z

74

Determination of the Azimuthal Asymmetry of Deuteron Photodisintegration in the Energy Region E{sub {gamma}} = 1.1 - 2.3 GeV  

SciTech Connect

Deuteron photodisintegration is a benchmark process for the investigation of the role of quarks and gluons in nuclei. Existing theoretical models of this process describe the available cross sections with the same degree of success. Therefore, spin-dependent observables are crucial for a better understanding of the underlying dynamical mechanisms. However, data on the induced polarization (P{sub y}), along with the polarization transfers (C{sub x'} and C{sub z'} ), have been shown to be insensitive to differences between theoretical models. On the other hand, the beam-spin asymmetry {Sigma} is predicted to have a large sensitivity and is expected to help in identifying the energy at which the transition from the hadronic to the quark-gluon picture of the deuteron takes place. Here, the work done to determine the experimental values of the beam-spin asymmetry in deuteron photodisintegration for photon energies between 1.1 ? 2.3 GeV is presented. The data were taken with the CLAS at the Thomas Jefferson National Accelerator Facility during the g13 experiment. Photons with linear polarization of ~80% were produced using the coherent bremsstrahlung facility in Hall B. The work done by the author to calibrate a specific detector system, select deuteron photodisintegration events, study the degree of photon polarization, and finally determine the azimuthal asymmetry and any systematic uncertainties associate with it, is comprehensively explained. This work shows that the collected data provide the kinematic coverage and statistics to test the available QCD-based models. The results of this study show that the available theoretical models in their current state do not adequately predict the azimuthal asymmetry in the energy region 1.1 ? 2.3 GeV.

Nicholas Zachariou

2012-05-20T23:59:59.000Z

75

Studies of azimuthal anisotropy harmonics in ultra-central PbPb collisions at sqrt(s[NN]) = 2.76 TeV  

E-Print Network (OSTI)

Azimuthal dihadron correlations of charged particles have been measured in PbPb collisions at sqrt(s[NN]) = 2.76 TeV by the CMS collaboration, using data from the 2011 LHC heavy-ion run. The data set includes a sample of ultra-central (0-0.2% centrality) PbPb events collected using a trigger based on total transverse energy in the hadron forward calorimeters and the total multiplicity of pixel clusters in the silicon pixel tracker. A total of about 1.8 million ultra-central events were recorded, corresponding to an integrated luminosity of 120 inverse microbarns. The observed correlations in ultra-central PbPb events are expected to be particularly sensitive to initial-state fluctuations. The single-particle anisotropy Fourier harmonics, from v[2] to v[6], are extracted as a function of particle transverse momentum. At higher transverse momentum, the v[2] harmonic becomes significantly smaller than the higher-order v[n] (n greater than or equal to 3). The pt-averaged v[2] and v[3] are found to be equal within 2%, while higher-order v[n] decrease as n increases. The breakdown of factorization of dihadron correlations into single-particle azimuthal anisotropies is observed. This effect is found to be most prominent in the ultra-central PbPb collisions, where the initial-state fluctuations play a dominant role. A comparison of the factorization data to hydrodynamic predictions with event-by-event fluctuating initial conditions is also presented.

CMS Collaboration

2013-12-06T23:59:59.000Z

76

Multiplicative scale uncertainties in the unified approach for constructing confidence intervals  

E-Print Network (OSTI)

We have investigated how uncertainties in the estimation of the detection efficiency affect the 90% confidence intervals in the unified approach for constructing confidence intervals. The study has been conducted for experiments where the number of detected events is large and can be described by a Gaussian probability density function. We also assume the detection efficiency has a Gaussian probability density and study the range of the relative uncertainties $\\sigma_\\epsilon$ between 0 and 30%. We find that the confidence intervals provide proper coverage and increase smoothly and continuously from the intervals that ignore scale uncertainties with a quadratic dependence on $\\sigma_\\epsilon$.

Smith, E S

2008-01-01T23:59:59.000Z

77

7.2.6. What intervals contain a fixed percentage of the ...  

Science Conference Proceedings (OSTI)

... Comparisons based on data from one process 7.2.6. What intervals contain a fixed percentage of the population values? ...

2012-03-31T23:59:59.000Z

78

The maximum time interval of time-lapse photography for monitoring construction operations  

E-Print Network (OSTI)

Many construction companies today utilize webcams on their jobsites to monitor and record construction operations. Jobsite monitoring is often limited to outdoor construction operations due to lack of mobility of wired webcams. A wireless webcam may help monitor indoor construction operations with enhanced mobility. The transfer time of sending a photograph from the wireless webcam, however, is slower than that of a wired webcam. It is expected that professionals may have to analyze indoor construction operations with longer interval time-lapse photographs if they want to use a wireless webcam. This research aimed to determine the maximum time interval for time-lapse photos that enables professionals to interpret construction operations and productivity. In order to accomplish the research goal, brickwork of five different construction sites was videotaped. Various interval time-lapse photographs were generated from each video. Worker?s activity in these photographs was examined and graded. The grades in one-second interval photographs were compared with the grades of the same in longer time interval photographs. Error rates in observing longer time-lapse photographs were then obtained and analyzed to find the maximum time interval of time-lapse photography for monitoring construction operations. Research has discovered that the observation error rate increased rapidly until the 60-second interval and its increasing ratio remained constant. This finding can be used to predict a reasonable amount of error rate when observing time-lapse photographs less than 60-second interval. The observation error rate with longer than 60-second interval did not show a constant trend. Thus, the 60-second interval could be considered as the maximum time interval for professionals to interpret construction operations and productivity.

Choi, Ji Won

2004-08-01T23:59:59.000Z

79

Evolutionary algorithms with preference polyhedron for interval multi-objective optimization problems  

Science Conference Proceedings (OSTI)

Multi-objective optimization problems (MOPs) with interval parameters are ubiquitous in real-world applications. Existing evolutionary optimization methods, however, aim to obtain a set of well-converged and evenly-distributed Pareto-optimal solutions. ... Keywords: Evolutionary algorithm, Interaction, Interval, Multi-objective optimization, Preference polyhedron

Dunwei Gong; Jing Sun; Xinfang Ji

2013-06-01T23:59:59.000Z

80

Solving interval multi-objective optimization problems using evolutionary algorithms with preference polyhedron  

Science Conference Proceedings (OSTI)

Multi-objective optimization (MOO) problems with interval parameters are popular and important in real-world applications. Previous evolutionary optimization methods aim to find a set of well-converged and evenly-distributed Pareto-optimal solutions. ... Keywords: evolutionary algorithm, interaction, interval, multi-objective optimization, preference polyhedron

Jing Sun; Dunwei Gong; Xiaoyan Sun

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Convergence Properties of an Interval Probabilistic Approach to System Reliability Estimation  

E-Print Network (OSTI)

by the values of the corresponding parameters x = x(1), x(2), . . . , x(n) ; for example, for a nuclear reactor, interval analysis, reliability analysis, Dempster-Shafer evidence theory, random sets, random intervals of these parameters, the system exhibits certain characteristics y = y(1), y(2), . . . , y(m) ; e.g., for a nuclear

Kreinovich, Vladik

82

The conjunctive combination of interval-valued belief structures from dependent sources  

Science Conference Proceedings (OSTI)

To combine belief functions from reliable dependent sources, Denoeux proposed an operator called the cautious conjunctive rule. In this paper, the conjunctive combination of interval-valued belief structures (IBSs) from reliable dependent sources is ... Keywords: Dempster--Shafer theory, Dependent sources, Non-dogmatic interval-valued belief structures, Nonlinear optimization, Trustworthiness evaluation of hospital information system

Chao Fu; Shanlin Yang

2012-07-01T23:59:59.000Z

83

Interval analysis of microcontroller code using abstract interpretation of hardware and software  

Science Conference Proceedings (OSTI)

Static analysis is often performed on source code where intervals -- possibly the most widely used numeric abstract domain -- have successfully been used as a program abstraction for decades. Binary code on microcontroller platforms, however, is different ... Keywords: abstract interpretation, binary code, embedded systems, interval analysis, static analysis

Jörg Brauer; Thomas Noll; Bastian Schlich

2010-06-01T23:59:59.000Z

84

Curvewise DET confidence regions and pointwise EER confidence intervals using radial  

E-Print Network (OSTI)

Curvewise DET confidence regions and pointwise EER confidence intervals using radial sweep methodology to create pointwise confidence intervals for the equal error rate (EER). The EER is the rate or bootstrap methods to estimate the variability in both the DET and the EER. Our radial sweep is based

Schuckers, Michael E.

85

Development of an interval-valued fuzzy linear-programming method based on infinite ?-cuts for water resources management  

Science Conference Proceedings (OSTI)

An interval-valued fuzzy linear-programming (IVFL) method based on infinite @a-cuts is developed for water resources management in this study. The introduction of interval parameters and interval-valued fuzzy parameters into the objective function and ... Keywords: Agricultural irrigation, Fuzzy linear-programming, Infinite ?-cuts, Interval, Uncertainty, Water resources

H. W. Lu; G. H. Huang; L. He

2010-03-01T23:59:59.000Z

86

Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at sqrt sNN = 9.2 GeV  

Science Conference Proceedings (OSTI)

We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au+Au collisions below the nominal injection energy at the Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance STAR detector at {radical}s{sub NN} = 9.2 GeV from a test run of the collider in the year 2008. Midrapidity results on multiplicity density (dN/dy) in rapidity (y), average transverse momentum (), particle ratios, elliptic flow, and HBT radii are consistent with the corresponding results at similar {radical}s{sub NN} from fixed target experiments. Directed flow measurements are presented for both midrapidity and forward rapidity regions. Furthermore the collision centrality dependence of identified particle dN/dy, , and particle ratios are discussed. These results also demonstrate that the capabilities of the STAR detector, although optimized for {radical}s{sub NN} = 200 GeV, are suitable for the proposed QCD critical point search and exploration of the QCD phase diagram at RHIC.

STAR Collaboration; Abelev, Betty

2010-07-05T23:59:59.000Z

87

Azimuthal decorrelations and multiple parton interactions in photon+2 jet and photon+3 jet events in ppbar collisions at sqrt{s}=1.96 TeV  

SciTech Connect

Samples of inclusive {gamma} + 2 jet and {gamma} + 3 jet events collected by the D0 experiment with an integrated luminosity of about 1 fb{sup -1} in p{bar p} collisions at {radical}s = 1.96 TeV are used to measure cross sections as a function of the angle in the plane transverse to the beam direction between the transverse momentum (p{sub T}) of the {gamma} + leading jet system (jets are ordered in p{sub T}) and p{sub T} of the other jet for {gamma} + 2 jet, or p{sub T} sum of the two other jets for {gamma} + 3 jet events. The results are compared to different models of multiple parton interactions (MPI) in the pythia and sherpa Monte Carlo (MC) generators. The data indicate a contribution from events with double parton (DP) interactions and are well described by predictions provided by the pythia MPI models with p{sub T}-ordered showers and by sherpa with the default MPI model. The {gamma} + 2 jet data are also used to determine the fraction of events with DP interactions as a function of the azimuthal angle and as a function of the second jet p{sub T}.

Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; /Oklahoma U.; Acharya, Bannanje Sripath; /Tata Inst.; Adams, Mark Raymond; /Illinois U., Chicago; Adams, Todd; /Florida State U.; Alexeev, Guennadi D.; /Dubna, JINR; Alkhazov, Georgiy D.; /St. Petersburg, INP; Alton, Andrew K.; /Michigan U. /Augustana Coll., Sioux Falls; Alverson, George O.; /Northeastern U.; Alves, Gilvan Augusto; /Rio de Janeiro, CBPF; Ancu, Lucian Stefan; /Nijmegen U. /Serpukhov, IHEP

2011-01-01T23:59:59.000Z

88

Overview of solar-terrestrial physics phenomena for STIP Interval XV (12-21 February 1984) and STIP Interval XVI (20 April-4 May 1984)  

Science Conference Proceedings (OSTI)

A summary of the significant solar-terrestrial events that occurred during STIP Interval XV (12 -21 February 1984) and STIP Interval XVI (20 April - 4 May 1984) is presented. The first period was highlighted by a large relativistic solar-particle event recorded at the earth on 16 February 1984. These particles were associated with a flare on the invisible hemisphere of the sun. The second period was highlighted by a major x-ray flare on 24 April 1984 with an associated geomagnetic distrubance on 25-26 April. This flare was associated with the release of solar neutrons - only the third time such an identification has been made.

Shea, M.A.

1987-07-01T23:59:59.000Z

89

Order-theoretic, topological, categorical redundancies of interval-valued sets, grey sets, vague sets, interval-valued “intuitionistic” sets, “intuitionistic” fuzzy sets and topologies  

Science Conference Proceedings (OSTI)

This paper demonstrates two meta-mathematical propositions concerning the increasingly popular ''intuitionistic'' (= vague) approaches to fuzzy sets and fuzzy topology, as well as the closely related interval-valued (= grey) sets and interval-valued ... Keywords: Categorical (functorial) isomorphism, Criteria of redundancy, DeMorgan algebras, L-double double fuzzy topology, L-double fuzzy topology, L-double gradation fuzzy topology, L-double topology, L-fuzzy topology, L-topology, Order-isomorphism, Semi-DeMorgan algebras, Semi-polarity

J. Gutiérrez García; S. E. Rodabaugh

2005-12-01T23:59:59.000Z

90

Azimuthal anisotropy ($v_{2}$) of high-p$_{T}$ $?^{0}$ and direct $?$ in Au+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV  

E-Print Network (OSTI)

Preliminary results from the STAR collaboration of the azimuthal anisotropy $(v_{2})$ of $\\pi^{0}$ and direct photon ($\\gamma_{dir}$) at high transverse momentum (p$_{T}$) from Au+Au collisions at center-of-mass energy $\\sqrt{s_{_{NN}}}=200$~GeV are presented. A shower-shape analysis is used to select a sample free of direct photons ($\\pi^0$) and a sample rich in direct photons $\\gamma_{rich}$. The relative contribution of background in the $\\gamma_{rich}$ sample is determined assuming no associated charged particles nearby $\\gamma_{dir}$. The $v_{2}$ of direct photons ($v_{2}^{\\gamma_{dir}}$) at mid-rapidity ($|\\eta^{\\gamma_{dir}}|<1$) and high p$_{T}$ ($8< p_{T}^{\\gamma_{dir}}<16$~GeV/$c$) is extracted from those of $\\pi^{0}$ and neutral particles measured in the same kinematic range. In mid-central Au+Au collisions (10-40$\\%$), the $v_{2}$ of $\\pi^0$ ($v_{2}^{\\pi^{0}}(p_{T})$) and charged particles ($v_{2}^{ch}(p_{T})$) are found to be $\\sim$ 0.12 and nearly independent of p$_{T}$. The measured $v_{2}^{\\gamma_{dir}}(p_{T})$ is positive finite and systematically smaller than that of $\\pi^{0}$ and charged particles by a factor of $\\sim$ 3. Although the large $v_{2}^{\\pi^{0}}$ at such high p$_{T}$ might be partially due to the path-length dependence of energy loss, the non-zero value of $v_{2}^{\\gamma_{dir}}$ indicates a bias of the reaction plane determination due to the presence of jets in the events. Systematic studies are currently in progress.

Ahmed M. Hamed

2010-08-29T23:59:59.000Z

91

Open source model for generating RR intervals in atrial fibrillation and beyond  

E-Print Network (OSTI)

Abstract Background Realistic modeling of cardiac inter-beat (RR) intervals is highly desirable for basic research in cardiac electrophysiology, clinical management of heart diseases, and developing signal processing tools ...

Lian, Jie

92

NIBART: A New Interval Based Algebraic Reconstruction Technique for Error Quantification of Emission Tomography Images  

Science Conference Proceedings (OSTI)

This article presents a new algebraic method for reconstructing emission tomography images. This approach is mostly an interval extension of the conventional SIRT algorithm. One of the main characteristic of our approach is that the reconstructed activity ...

Olivier Strauss; Abdelkabir Lahrech; Agnès Rico; Denis Mariano-Goulart; Benoît Telle

2009-10-01T23:59:59.000Z

93

Efficient estimation for semiparametric cure models with interval-censored data  

Science Conference Proceedings (OSTI)

This paper is concerned with the analysis of interval-censored survival data in the presence of a non-negligible cure fraction using semiparametric non-mixture cure models. We propose a spline-based sieve estimation method which overcomes numerical difficulties ... Keywords: 62G20, 62N01, 62N02, Constrained optimization, Cure model, Interval censoring, Semiparametric efficiency, Sieve maximum likelihood estimation, Splines

Tao Hu, Liming Xiang

2013-10-01T23:59:59.000Z

94

Solar-geophysical activity reports for STIP (study of travelling interplanetary phenomena) Interval 15, 12-21 February 1984 ground-level event and STIP Interval 16, 20 April-4 May 1984 Forbush decrease  

Science Conference Proceedings (OSTI)

Contents include: solar-geophysical activity reports for STIP Interval XV 12-21 February 1984 ground-level event and STIP interval XVI 20 April-4 May 1984 Forbush decrease; overview of solar-terrestrial physics phenomena for STIP interval XV (12-21 February 1984) and STIP interval XVI (20 April-4 May 1984) (solar optical reports, solar radio events, spacecraft observations, cosmic ray observations, ionosphere, geomagnetism).

Coffey, H.E.; Allen, J.H.

1987-07-01T23:59:59.000Z

95

An improved result on the stability of uncertain T-S fuzzy systems with interval time-varying delay  

Science Conference Proceedings (OSTI)

This paper is concerned with the stability of uncertain T-S fuzzy systems with interval time-varying delay. By uniformly dividing the delay interval into multiple segments and constructing an appropriate augmented Lyapunov-Krasovskii functional, some ... Keywords: Delay-partitioning, Fuzzy system models, Interval time-varying delay, Linear matrix inequalities (LMIs)

Chen Peng; Min-Rui Fei

2013-02-01T23:59:59.000Z

96

Summary of significant solar-initiated events during STIP interval XII  

SciTech Connect

A summary of the significant solar-terrestrial events of STIP Interval XII (April 10-July 1, 1981) is presented. It is shown that the first half of the interval was extremely active, with several of the largest X-ray flares, particle events, and shocks of this solar cycle taking place during April and the first half of May. However, the second half of the interval was characterized by relatively quiet conditions. A detailed examination is presented of several large events which occurred on 10, 24, and 27 April and on 8 and 16 May. It is suggested that the comparison and statistical analysis of the numerous events for which excellent observations are available could provide information on what causes a type II burst to propagate in the interplanetary medium.

Gergely, T.E.

1982-01-01T23:59:59.000Z

97

Targeted deletion of the 9p21 noncoding coronary artery disease risk interval in mice  

SciTech Connect

Sequence polymorphisms in a 58kb interval on chromosome 9p21 confer a markedly increased risk for coronary artery disease (CAD), the leading cause of death worldwide 1,2. The variants have a substantial impact on the epidemiology of CAD and other life?threatening vascular conditions since nearly a quarter of Caucasians are homozygous for risk alleles. However, the risk interval is devoid of protein?coding genes and the mechanism linking the region to CAD risk has remained enigmatic. Here we show that deletion of the orthologous 70kb noncoding interval on mouse chromosome 4 affects cardiac expression of neighboring genes, as well as proliferation properties of vascular cells. Chr4delta70kb/delta70kb mice are viable, but show increased mortality both during development and as adults. Cardiac expression of two genes near the noncoding interval, Cdkn2a and Cdkn2b, is severely reduced in chr4delta70kb/delta70kb mice, indicating that distant-acting gene regulatory functions are located in the noncoding CAD risk interval. Allelespecific expression of Cdkn2b transcripts in heterozygous mice revealed that the deletion affects expression through a cis-acting mechanism. Primary cultures of chr4delta70kb/delta70kb aortic smooth muscle cells exhibited excessive proliferation and diminished senescence, a cellular phenotype consistent with accelerated CAD pathogenesis. Taken together, our results provide direct evidence that the CAD risk interval plays a pivotal role in regulation of cardiac Cdkn2a/b expression and suggest that this region affects CAD progression by altering the dynamics of vascular cell proliferation.

Visel, Axel; Zhu, Yiwen; May, Dalit; Afzal, Veena; Gong, Elaine; Attanasio, Catia; Blow, Matthew J.; Cohen, Jonathan C.; Rubin, Edward M.; Pennacchio, Len A.

2010-01-01T23:59:59.000Z

98

Distribution of Primes and of Interval Prime Pairs Based on $?$ Function  

E-Print Network (OSTI)

$\\Theta$ function is defined based upon Kronecher symbol. In light of the principle of inclusion-exclusion, $\\Theta$ function of sine function is used to denote the distribution of composites and primes. The structure of Goldbach Conjecture has been analyzed, and $\\Xi$ function is brought forward by the linear diophantine equation; by relating to $\\Theta$ function, the interval distribution of composite pairs and prime pairs (i.e. the Goldbach Conjecture) is thus obtained. In the end, Abel's Theorem (Multiplication of Series) is used to discuss the lower limit of the distribution of the interval prime pairs.

Yifang Fan; Zhiyu Li

2010-04-19T23:59:59.000Z

99

Efficient Algorithms for the Domination Problems on Interval and Circular-Arc Graphs  

E-Print Network (OSTI)

Abstract. This paper first presents a unified approach to design efficient algorithms for the weighted domination problem and its three variants, i.e., the weighted independent, connected, and total domination problems, on interval graphs. Given an interval model with endpoints sorted, these algorithms run in time O(n) orO(n log log n) where n is the number of vertices. The results are then extended to solve the same problems on circular-arc graphs in O(n + m) time where m is the number of edges of the input graph.

Maw-shang Chang

1998-01-01T23:59:59.000Z

100

Oscillating HBT radii and the time evolution of the source - sqrt(s_NN) = 200 GeV Au+Au data analyzed with azimuthally sensitive Buda-Lund hydro model  

E-Print Network (OSTI)

Identified particle spectra of pions, kaons and (anti)protons, and elliptic flow and azimuthal dependence of Bose-Einstein or HBT correlations of identified pions in sqrt(s_NN) = 200 GeV Au+Au collisions is analyzed simultaneously using an ellipsoidally symmetric generalization of the Buda-Lund hydrodynamical model. The transverse flow is found to be faster in the reaction plane than out of plane, which results in a reaction zone that gets slightly more elongated in-plane than out of plane.

A. Ster; M. Csanad; T. Csorgo; B. Lorstad; B. Tomasik

2011-04-06T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Oscillating HBT radii and the time evolution of the source - sqrt(s_NN) = 200 GeV Au+Au data analyzed with azimuthally sensitive Buda-Lund hydro model  

E-Print Network (OSTI)

Identified particle spectra of pions, kaons and (anti)protons, and elliptic flow and azimuthal dependence of Bose-Einstein or HBT correlations of identified pions in sqrt(s_NN) = 200 GeV Au+Au collisions is analyzed simultaneously using an ellipsoidally symmetric generalization of the Buda-Lund hydrodynamical model. The transverse flow is found to be faster in the reaction plane than out of plane, which results in a reaction zone that gets slightly more elongated in-plane than out of plane.

Ster, A; Csorgo, T; Lorstad, B; Tomasik, B

2011-01-01T23:59:59.000Z

102

Proper Oil Sampling Intervals and Sample Collection Techniques Gasoline/Diesel/Natural Gas Engines  

E-Print Network (OSTI)

Proper Oil Sampling Intervals and Sample Collection Techniques Gasoline/Diesel/Natural Gas Engines: · Oil samples can be collected during oil changes. Follow manufacturers recommendations on frequency (hours, mileage, etc) of oil changes. · Capture a sample from the draining oil while the oil is still hot

103

MIE 1.0 - Gas Turbine Maintenance Interval Estimator , Version 1.0  

Science Conference Proceedings (OSTI)

The EPRI Gas Turbine Maintenance Interval Estimator Version 1.0 (MIE 1.0) is a spreadsheet application that predicts the remaining hot section life of a General Electric heavy-duty gas turbine using General Electric's standard algorithms described in GER-3620K.

2007-03-29T23:59:59.000Z

104

Point and prediction interval estimation for electricity markets with machine learning techniques and wavelet transforms  

Science Conference Proceedings (OSTI)

A growing number of countries all over the world are switching over to deregulated or the market structure of electricity sector with a view to enhance productivity, efficiency and to lower the prices. Barring a few cases, the deregulated structure is ... Keywords: Artificial neural network (ANN), Bootstraps, Extreme learning machine (ELM), Prediction intervals, Uncertainty, Wavelet transforms

Nitin Anand Shrivastava, Bijaya Ketan Panigrahi

2013-10-01T23:59:59.000Z

105

Relativistic solar particle events during STIP (study of travelling interplanetary phenomena) intervals II and IV  

Science Conference Proceedings (OSTI)

Using spaceship 'Earth' as a detector located at 1 AU, the relativistic solar cosmic ray events of 30 April 1976 and 22 November 1977 are compared to deduce the relativistic solar particle flux anisotropy and pitch angle characteristics in the interplanetary medium. These two ground level events occurred during STIP Interval II and IV respectively - periods of time of coordinated and cooperative scientific efforts.

Shea, M.A.; Smart, D.F.

1982-12-27T23:59:59.000Z

106

A generalization of the Wiener rational basis functions on infinite intervals, Part II - Numerical investigation  

Science Conference Proceedings (OSTI)

In Part I we introduced the generalized Wiener rational basis functions, and here in Part II we continue our investigation with numerical experiments. Wiener's generalized basis can utilize the fast Fourier transform for integer values of the decay parameter ... Keywords: Fast Fourier transform, Infinite intervals, Spectral methods

Akil C. Narayan; Jan S. Hesthaven

2013-01-01T23:59:59.000Z

107

Exponential instability in the inverse scattering problem on the energy interval  

E-Print Network (OSTI)

We consider the inverse scattering problem on the energy interval in three dimensions. We are focused on stability and instability questions for this problem. In particular, we prove an exponential instability estimate which shows optimality of the logarithmic stability result of [Stefanov, 1990] (up to the value of the exponent).

Isaev, Mikhail

2010-01-01T23:59:59.000Z

108

A review on the design and optimization of interval type-2 fuzzy controllers  

Science Conference Proceedings (OSTI)

A review of the methods used in the design of interval type-2 fuzzy controllers has been considered in this work. The fundamental focus of the work is based on the basic reasons for optimizing type-2 fuzzy controllers for different areas of application. ... Keywords: Bio-inspired methods, Design and optimization, Type-2 fuzzy controllers

Oscar Castillo; Patricia Melin

2012-04-01T23:59:59.000Z

109

Point and Interval Forecasting of Spot Electricity Prices: Linear vs. Non-Linear Time Series Models  

E-Print Network (OSTI)

In this paper we assess the short-term forecasting power of different time series models in the electricity spot market. In particular we calibrate AR/ARX (”X” stands for exogenous/fundamental variable — system load in our study), AR/ARX-GARCH, TAR/TARX and Markov regime-switching models to California Power Exchange (CalPX) system spot prices. We then use them for out-ofsample point and interval forecasting in normal and extremely volatile periods preceding the market crash in winter 2000/2001. We find evidence that (i) non-linear, threshold regime-switching (TAR/TARX) models outperform their linear counterparts, both in point and interval forecasting, and that (ii) an additional GARCH component generally decreases point forecasting efficiency. Interestingly, the former result challenges a number of previously published studies on the failure of non-linear regime-switching models in forecasting.

Adam Misiorek; Stefan Trueck; Rafal Weron

2006-01-01T23:59:59.000Z

110

Interval Data Analysis with the Energy Charting and Metrics Tool (ECAM)  

SciTech Connect

Analyzing whole building interval data is an inexpensive but effective way to identify and improve building operations, and ultimately save money. Utilizing the Energy Charting and Metrics Tool (ECAM) add-in for Microsoft Excel, building operators and managers can begin implementing changes to their Building Automation System (BAS) after trending the interval data. The two data components needed for full analyses are whole building electricity consumption (kW or kWh) and outdoor air temperature (OAT). Using these two pieces of information, a series of plots and charts and be created in ECAM to monitor the buildings performance over time, gain knowledge of how the building is operating, and make adjustments to the BAS to improve efficiency and start saving money.

Taasevigen, Danny J.; Katipamula, Srinivas; Koran, William

2011-07-07T23:59:59.000Z

111

Turbine-Generator Maintenance Interval Optimization Using a Financial Risk Assessment Technique  

Science Conference Proceedings (OSTI)

Turbine-generator (T-G) maintenance interval selection is evolving from a time-based and reliability-centered approach to an approach based on financial risk. The new financial-based decision methods seek to reduce each unit's maintenance costs to the lowest level consistent with safe operation, while balancing operations and maintenance (O&M) expenditures optimally over the entire plant or system. EPRI's Turbo-X software provides a powerful planning tool for engineers to evaluate specific proposals for ...

2000-11-21T23:59:59.000Z

112

Integrity-directed sequential state estimation: Assessing high reliability requirements via safe confidence intervals  

Science Conference Proceedings (OSTI)

This study deals with the problem of dynamic state estimation of continuous-time systems from discrete-time measurements in the context of high-integrity applications. The objective of integrity-directed estimation is to provide confidence intervals ... Keywords: Bayesian framework, Dynamic estimation, Dynamic multiple-model estimator, Fault detection, Gaussian mixture, Integrity, Kalman filter, Kullback-Leibler distance, Markov chains, Odometry, Overbounding, Rail navigation, Robust estimation, Safe navigation systems

Olivier Bilenne

2007-01-01T23:59:59.000Z

113

The Diffusion Coefficient For Piecewise Expanding Maps Of The Interval With Metastable States  

E-Print Network (OSTI)

Consider a piecewise smooth expanding map of the interval possessing several invariant subintervals and the same number of ergodic absolutely continuous invariant probability measures (ACIMs). After this system is perturbed to make the subintervals lose their invariance in such a way that there is a unique ACIM, we show how to approximate the diffusion coefficient for an observable of bounded variation by the diffusion coefficient of a related continuous time Markov chain.

Dmitry Dolgopyat; Paul Wright

2010-11-24T23:59:59.000Z

114

Differential properties and attracting sets of a simplest skew product of interval maps  

Science Conference Proceedings (OSTI)

For a skew product of interval maps with a closed set of periodic points, the dependence of the structure of its {omega}-limit sets on its differential properties is investigated. An example of a map in this class is constructed which has the maximal differentiability properties (within a certain subclass) with respect to the variable x, is C{sup 1}-smooth in the y-variable and has one-dimensional {omega}-limit sets. Theorems are proved that give necessary conditions for one-dimensional {omega}-limit sets to exist. One of them is formulated in terms of the divergence of the series consisting of the values of a function of x; this function is the C{sup 0}-norm of the deviation of the restrictions of the fibre maps to some nondegenerate closed interval from the identity on the same interval. Another theorem is formulated in terms of the properties of the partial derivative with respect to x of the fibre maps. A complete description is given of the {omega}-limit sets of certain class of C{sup 1}-smooth skew products satisfying some natural conditions. Bibliography: 33 titles.

Efremova, Lyudmila S [N. I. Lobachevski State University of Nizhni Novgorod, Nizhnii Novgorod (Russian Federation)

2010-08-12T23:59:59.000Z

115

Prolonged QT interval at onset of acute myocardial infarction in predicting early phase ventricular tachycardia  

Science Conference Proceedings (OSTI)

The prospectively assessed time course of changes in ventricular repolarization during acute myocardial infarction (AMI) is reported in 32 patients admitted 2.0 +/- 1.8 (SD) hours after AMI onset. The initial corrected QT interval (QTc) upon hospitalization was longer in the 14 patients developing ventricular tachycardia (VT) within the first 48 hours as compared to QTc in the eight patients with frequent ventricular premature beats (VPBs) and to QTc in the 10 patients with infrequent VPBs. By the fifth day after AMI onset, the QTc shortened significantly only in the VT group, suggesting a greater initial abnormality of repolarization in these patients. All 32 patients had coronary angiography, radionuclide ventriculography, and myocardial perfusion scintigraphy before hospital discharge. Significant discriminating factors related to early phase VT in AMI included initially longer QT and QTc intervals, faster heart rate, higher peak serum levels of creatine kinase, acute anterior infarction, angiographically documented proximal stenosis of the left anterior descending coronary artery, and scintigraphic evidence of hypoperfusion of the interventricular septum. Prior infarction, angina pectoris, hypertension, multivessel coronary artery disease, and depressed left ventricular ejection fraction did not provide discrimination among the three different ventricular arrhythmia AMI groups. Researchers conclude that (1) the QT interval is frequently prolonged early in AMI, (2) the initial transiently prolonged ventricular repolarization facilitates and predicts complex ventricular tachyarrhythmias within the first 48 hours of AMI, (3) jeopardized blood supply to the interventricular septum frequently coexists, and (4) therapeutic enhancement of rapid recovery of the ventricular repolarization process merits investigation for prevention of VT in AMI.

Taylor, G.J.; Crampton, R.S.; Gibson, R.S.; Stebbins, P.T.; Waldman, M.T.; Beller, G.A.

1981-07-01T23:59:59.000Z

116

Adaptive non-uniform B-spline dictionaries on a compact interval  

E-Print Network (OSTI)

Non-uniform B-spline dictionaries on a compact interval are discussed. For each given partition, dictionaries of B-spline functions for the corresponding spline space are constructed. It is asserted that, by dividing the given partition into subpartitions and joining together the bases for the concomitant subspaces, slightly redundant dictionaries of B-splines functions are obtained. Such dictionaries are proved to span the spline space associated to the given partition. The proposed construction is shown to be potentially useful for the purpose of sparse signal representation. With that goal in mind, spline spaces specially adapted to produce a sparse representation of a given signal are considered.

Rebollo-Neira, Laura

2009-01-01T23:59:59.000Z

117

Atomic-beam measurements of helium F-G, F-H, and F-I intervals  

SciTech Connect

The fast-atomic-beam microwave-optical resonance technique has been used to measure the 8F-8G, 8F-8H, 7F-6H, and 7F-7I intervals in helium. The electrostatic fine-structure intervals derived from these measurements and from theoretical values of the magnetic fine structure are 8F-8G, 3898.525(0.041); 8G-8H, 931.34(0.44); 7G-7H, 1359.16(0.11); and 7H-7I, 402.8(4.7) MHz. Additional theoretical work is needed to understand these intervals beyond the 1% level.

Cok, D.R.; Lundeen, S.R.

1981-05-01T23:59:59.000Z

118

File:Table for Tip Speed Intervals of Length.pdf | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search File Edit History Facebook icon Twitter icon » File:Table for Tip Speed Intervals of Length.pdf Jump to: navigation, search File File history File usage Metadata File:Table for Tip Speed Intervals of Length.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(1,275 × 1,650 pixels, file size: 99 KB, MIME type: application/pdf) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 09:37, 3 January 2014 Thumbnail for version as of 09:37, 3 January 2014 1,275 × 1,650 (99 KB) Foteri (Talk | contribs) Category:Wind for Schools Portal CurriculaCategory:Wind for Schools High School Curricula

119

Sieve-based confidence intervals and bands for L\\'{e}vy densities  

E-Print Network (OSTI)

The estimation of the L\\'{e}vy density, the infinite-dimensional parameter controlling the jump dynamics of a L\\'{e}vy process, is considered here under a discrete-sampling scheme. In this setting, the jumps are latent variables, the statistical properties of which can be assessed when the frequency and time horizon of observations increase to infinity at suitable rates. Nonparametric estimators for the L\\'{e}vy density based on Grenander's method of sieves was proposed in Figueroa-L\\'{o}pez [IMS Lecture Notes 57 (2009) 117--146]. In this paper, central limit theorems for these sieve estimators, both pointwise and uniform on an interval away from the origin, are obtained, leading to pointwise confidence intervals and bands for the L\\'{e}vy density. In the pointwise case, our estimators converge to the L\\'{e}vy density at a rate that is arbitrarily close to the rate of the minimax risk of estimation on smooth L\\'{e}vy densities. In the case of uniform bands and discrete regular sampling, our results are consis...

Figueroa-López, José E

2011-01-01T23:59:59.000Z

120

Converting 15-Minute Interval Electricity Load Data into Reduced Demand, Energy Reduction and Cash Flow  

E-Print Network (OSTI)

Whole-building-electric (WBE) 15-minute interval data is an extremely low-cost, easy approach to reap an immediate reduction in energy consumption. With the advance of lower cost Internet based metering technology integrated with TCP/IP Internet communications, equipment costs and installation issues are not the issues as were in the past. The challenge is to be able to interpret the data and then implement actions to correct operational and equipment problems and anomalies. This paper will address the types of data acquisition equipment and systems available and the different components of a data. Lastly, actual graphs of data will be presented to demonstrate how to dissect and analyze a data set and then implement measures that will optimize operations and maintenance of which will effect a reduction in energy costs.

Herrin, D. G.

2007-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Statistical variability and confidence intervals for planar dose QA pass rates  

Science Conference Proceedings (OSTI)

Purpose: The most common metric for comparing measured to calculated dose, such as for pretreatment quality assurance of intensity-modulated photon fields, is a pass rate (%) generated using percent difference (%Diff), distance-to-agreement (DTA), or some combination of the two (e.g., gamma evaluation). For many dosimeters, the grid of analyzed points corresponds to an array with a low areal density of point detectors. In these cases, the pass rates for any given comparison criteria are not absolute but exhibit statistical variability that is a function, in part, on the detector sampling geometry. In this work, the authors analyze the statistics of various methods commonly used to calculate pass rates and propose methods for establishing confidence intervals for pass rates obtained with low-density arrays. Methods: Dose planes were acquired for 25 prostate and 79 head and neck intensity-modulated fields via diode array and electronic portal imaging device (EPID), and matching calculated dose planes were created via a commercial treatment planning system. Pass rates for each dose plane pair (both centered to the beam central axis) were calculated with several common comparison methods: %Diff/DTA composite analysis and gamma evaluation, using absolute dose comparison with both local and global normalization. Specialized software was designed to selectively sample the measured EPID response (very high data density) down to discrete points to simulate low-density measurements. The software was used to realign the simulated detector grid at many simulated positions with respect to the beam central axis, thereby altering the low-density sampled grid. Simulations were repeated with 100 positional iterations using a 1 detector/cm{sup 2} uniform grid, a 2 detector/cm{sup 2} uniform grid, and similar random detector grids. For each simulation, %/DTA composite pass rates were calculated with various %Diff/DTA criteria and for both local and global %Diff normalization techniques. Results: For the prostate and head/neck cases studied, the pass rates obtained with gamma analysis of high density dose planes were 2%-5% higher than respective %/DTA composite analysis on average (ranging as high as 11%), depending on tolerances and normalization. Meanwhile, the pass rates obtained via local normalization were 2%-12% lower than with global maximum normalization on average (ranging as high as 27%), depending on tolerances and calculation method. Repositioning of simulated low-density sampled grids leads to a distribution of possible pass rates for each measured/calculated dose plane pair. These distributions can be predicted using a binomial distribution in order to establish confidence intervals that depend largely on the sampling density and the observed pass rate (i.e., the degree of difference between measured and calculated dose). These results can be extended to apply to 3D arrays of detectors, as well. Conclusions: Dose plane QA analysis can be greatly affected by choice of calculation metric and user-defined parameters, and so all pass rates should be reported with a complete description of calculation method. Pass rates for low-density arrays are subject to statistical uncertainty (vs. the high-density pass rate), but these sampling errors can be modeled using statistical confidence intervals derived from the sampled pass rate and detector density. Thus, pass rates for low-density array measurements should be accompanied by a confidence interval indicating the uncertainty of each pass rate.

Bailey, Daniel W.; Nelms, Benjamin E.; Attwood, Kristopher; Kumaraswamy, Lalith; Podgorsak, Matthew B. [Department of Physics, State University of New York at Buffalo, Buffalo, New York 14260 (United States) and Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Canis Lupus LLC, Merrimac, Wisconsin 53561 (United States); Department of Biostatistics, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Department of Molecular and Cellular Biophysics and Biochemistry, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States) and Department of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York 14214 (United States)

2011-11-15T23:59:59.000Z

122

Temperatures and interval geothermal-gradient determinations from wells in National Petroleum Reserve in Alaska  

SciTech Connect

Temperature and related records from 28 wells in the National Petroleum Reserve in Alaska (NPRA) although somewhat constrained from accuracy by data gathering methods, extrapolate to undisturbed formation temperatures at specific depths below permafrost, and lead to calculated geothermal graidents between these depths. Tabulation of the results show that extrapolated undisturbed temperatures range from a minimum of 98/sup 0/F (37/sup 0/C) at 4000 feet (1220 m) to a maximum of 420/sup 0/F (216/sup 0/C) at 20,260 feet (6177 m) and that geothermal gradients range from 0.34/sup 0/F/100' (6/sup 0/C/km) between 4470 feet to 7975 feet (Lisburne No. 1) and 3.15/sup 0/F/100' (57/sup 0/C/km) between 6830 feet to 7940 feet (Drew Point No. 1). Essential information needed for extrapolations consists of: time-sequential bottom-hole temperatures during wire-line logging of intermediate and deep intervals of the borehole; the times that circulating drilling fluids had disturbed the formations; and the subsequent times that non-circulating drilling fluids had been in contact with the formation. In several wells presumed near direct measures of rock temperatures recorded from formation fluids recovered by drill stem tests (DST) across thin (approx. 10-20 foot) intervals are made available. We believe that the results approach actual values close enough to serve as approximations of the thermal regimes in appropriate future investigations. Continuous temperature logs obtained at the start and end of final logging operations, conductivity measurements, and relatively long-term measurements of the recovery from disturbance at shallow depths in many of the wells will permit refinements of our values and provide determination of temperatures at other depths. 4 references, 6 figures, 3 tables.

Blanchard, D.C.; Tailleur, I.L.

1983-12-15T23:59:59.000Z

123

ARM - Datastreams - xsacrhsrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsxsacrhsrhi Datastreamsxsacrhsrhi Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRHSRHI X-Band Scanning ARM Cloud Radar (XSACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals) Active Dates 2011.09.14 - 2013.05.31 Measurement Categories Cloud Properties Originating Instrument X-Band Scanning ARM Cloud Radar (XSACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Altitude m altitude Altitude above ground level m altitude_agl Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time )

124

Interval-parameter semi-infinite fuzzy-stochastic mixed-integer programming approach for environmental management under multiple uncertainties  

SciTech Connect

In this study, an interval-parameter semi-infinite fuzzy-chance-constrained mixed-integer linear programming (ISIFCIP) approach is developed for supporting long-term planning of waste-management systems under multiple uncertainties in the City of Regina, Canada. The method improves upon the existing interval-parameter semi-infinite programming (ISIP) and fuzzy-chance-constrained programming (FCCP) by incorporating uncertainties expressed as dual uncertainties of functional intervals and multiple uncertainties of distributions with fuzzy-interval admissible probability of violating constraint within a general optimization framework. The binary-variable solutions represent the decisions of waste-management-facility expansion, and the continuous ones are related to decisions of waste-flow allocation. The interval solutions can help decision-makers to obtain multiple decision alternatives, as well as provide bases for further analyses of tradeoffs between waste-management cost and system-failure risk. In the application to the City of Regina, Canada, two scenarios are considered. In Scenario 1, the City's waste-management practices would be based on the existing policy over the next 25 years. The total diversion rate for the residential waste would be approximately 14%. Scenario 2 is associated with a policy for waste minimization and diversion, where 35% diversion of residential waste should be achieved within 15 years, and 50% diversion over 25 years. In this scenario, not only landfill would be expanded, but also CF and MRF would be expanded. Through the scenario analyses, useful decision support for the City's solid-waste managers and decision-makers has been generated. Three special characteristics of the proposed method make it unique compared with other optimization techniques that deal with uncertainties. Firstly, it is useful for tackling multiple uncertainties expressed as intervals, functional intervals, probability distributions, fuzzy sets, and their combinations; secondly, it has capability in addressing the temporal variations of the functional intervals; thirdly, it can facilitate dynamic analysis for decisions of facility-expansion planning and waste-flow allocation within a multi-facility, multi-period and multi-option context.

Guo, P., E-mail: guoping@iseis.or [College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083 (China); Huang, G.H., E-mail: gordon.huang@uregina.c [Environmental Systems Engineering Program, University of Regina, Regina, Saskatchewan, S4S 0A2 (Canada); College of Urban and Environmental Sciences, Peking University, Beijing, 100871 (China)

2010-03-15T23:59:59.000Z

125

A Technique for Estimating Recurrence Intervals of Tropical Cyclone-Related High Winds in the Tropics: Results for Guam  

Science Conference Proceedings (OSTI)

The authors develop a technique that applies models of the radial profile of the wind in tropical cyclones to historical best-track databases of tropical cyclones, in order to estimate the wind (at 1-h intervals) experienced at any selected ...

John A. Rupp; Mark A. Lander

1996-05-01T23:59:59.000Z

126

On the regularity of solutions to integral equations with nonsmooth kernels on a union of open intervals  

Science Conference Proceedings (OSTI)

The behaviour of a solution to a Fredholm integral equation of the second kind on a union of open intervals is examined. The kernel of the corresponding integral operator may have diagonal singularities, information about them is given through certain ... Keywords: 45B05, 45D05, 45M05, Boundary singularities, Compact operators, Fredholm integral equation, Smoothness of the solution, Weakly singular kernel

Arvet Pedas; Gennadi Vainikko

2009-07-01T23:59:59.000Z

127

Stable Centered-Difference Schemes, Based on an Unstaggered A Grid, That Eliminate Two-Grid Interval Noise  

Science Conference Proceedings (OSTI)

The use of a centered-difference scheme on an unstaggered horizontal grid in time-dependent atmospheric or oceanic models leads to spurious two-grid-interval wave solutions that may appear as small-scale noise and mask the physically significant ...

Sajal K. Kar

2000-10-01T23:59:59.000Z

128

Improved interval estimation of long run response from a dynamic linear model: A highest density region approach  

Science Conference Proceedings (OSTI)

This paper proposes a new method of interval estimation for the long run response (or elasticity) parameter from a general linear dynamic model. We employ the bias-corrected bootstrap, in which small sample biases associated with the parameter estimators ... Keywords: ARDL model, Bias-correction, Bootstrapping, Highest density region, Long run elasticity

Jae H. Kim; Iain Fraser; Rob J. Hyndman

2011-08-01T23:59:59.000Z

129

A novel statistical time-series pattern based interval forecasting strategy for activity durations in workflow systems  

Science Conference Proceedings (OSTI)

Forecasting workflow activity durations is of great importance to support satisfactory QoS in workflow systems. Traditionally, a workflow system is often designed to facilitate the process automation in a specific application domain where activities ... Keywords: Activity duration, Interval forecasting, Statistical time series, Time-series patterns, Workflow system

Xiao Liu; Zhiwei Ni; Dong Yuan; Yuanchun Jiang; Zhangjun Wu; Jinjun Chen; Yun Yang

2011-03-01T23:59:59.000Z

130

Point and interval estimation for the two-parameter Birnbaum-Saunders distribution based on Type-II censored samples  

Science Conference Proceedings (OSTI)

The maximum likelihood estimators, based on Type-II censored samples, of a two-parameter Birnbaum-Saunders distribution are discussed. We propose a simple bias-reduction method to reduce the bias of the maximum likelihood estimators. We also discuss ... Keywords: Asymptotic distribution, Bias-corrected estimator, Confidence interval, Monte Carlo EM-algorithm, Monte Carlo simulation, Probability coverage

H. K. T. Ng; D. Kundu; N. Balakrishnan

2006-07-01T23:59:59.000Z

131

Multi-cluster processor operating only select number of clusters during each phase based on program statistic monitored at predetermined intervals  

DOE Patents (OSTI)

In a processor having multiple clusters which operate in parallel, the number of clusters in use can be varied dynamically. At the start of each program phase, the configuration option for an interval is run to determine the optimal configuration, which is used until the next phase change is detected. The optimum instruction interval is determined by starting with a minimum interval and doubling it until a low stability factor is reached.

Balasubramonian, Rajeev (Sandy, UT); Dwarkadas, Sandhya (Rochester, NY); Albonesi, David (Ithaca, NY)

2009-02-10T23:59:59.000Z

132

Subsurface stratigraphy and petrophysical analysis of the Middle Devonian interval, including the Marcellus Shale, of the central Appalachian basin; northwestern Pennsylvania.  

E-Print Network (OSTI)

??In the central Appalachian basin, the multiple organic-rich intervals of the Middle Devonian, including the Marcellus Shale, are an emerging large resource play with high… (more)

Yanni, Anne.

2010-01-01T23:59:59.000Z

133

Sub-surface stratigraphy and petrophysical analysis of the Middle Devonian Interval of the Central Appalachian Basin; West Virginia and Southwest Pennsylvania.  

E-Print Network (OSTI)

??In the central Appalachian basin, the Middle Devonian organic-rich shale interval, including the Marcellus Shale, is an important target for natural gas exploration. It has… (more)

Boyce, Matthew L. (Matthew Louis), 1985-

2010-01-01T23:59:59.000Z

134

Brief paper: Delay-dependent robust H? filtering for uncertain discrete-time singular systems with interval time-varying delay  

Science Conference Proceedings (OSTI)

This paper focuses on the delay-dependent robust H"~ filtering for uncertain discrete-time singular systems with interval time-varying delay. The uncertainty considered is a convex compact set of polytopic type. The purpose is the design of a linear ... Keywords: Discrete-time singular systems, Interval time-varying delay, Linear matrix inequality, Robust H? filter

Jong Hae Kim

2010-03-01T23:59:59.000Z

135

Energy Consumption Estimation for Room Air-conditioners Using Room Temperature Simulation with One-Minute Intervals  

E-Print Network (OSTI)

For the purpose of developing optimized control algorithm for room air-conditioners to ensure their energy efficiency, a short time interval (i.e., one minute) simulation of building thermal performance is necessary because the sampling time interval for room air-conditioner control is one minute in general. This paper studies the short-time interval room air temperature simulation method using the response factor method. Using the simulated room air temperature, an air-conditioner's running time can be known so that its energy consumption can be estimated accurately. In order to verify the simulation accuracy, an actual room equipped with a gas-engine heat pump (GHP) air-conditioning system is studied by both simulation and measurement. The cooling amount produced by the GHP is calculated using measured refrigerant pressure and temperature at condenser and evaporator respectively. The Root Mean Square Error (RMSE) between measured cooling amount and simulated cooling load is 18.9 percent of the average measured value. The profile of simulated room air temperature in both air-conditioned daytime and nighttime without air-conditioning can match the measured room air temperature. With respect to the estimated energy consumption, the profile of simulated energy consumption can match the measured data. The simulation accuracy of room air temperature and energy consumption during the air-conditioner start-up period is not good and needs to be improved in future research. But in general, the verification shows that this energy consumption simulation method is acceptable for evaluating the energy performance of a room air-conditioner, and can also be a useful tool for commissioning room air-conditioners.

Wang, F.; Yoshida, H.; Matsumoto, K.

2006-01-01T23:59:59.000Z

136

Follow-up investigations of GPHS motion during heat pulse intervals of reentries from gravity-assist trajectories  

DOE Green Energy (OSTI)

Motion studies of the General Purpose Heat Source Module, GPHS, which were conducted in the heat pulse intervals associated with entries from earth gravity assist trajectories. The APL six-degree-of-freedom reentry program designated TMAGRA6C was used. The objectives of the studies were to (1) determine whether the GPHS module entering the earth's atmosphere from an earth-gravity-assist trajectory has a preferred orientation during the heat pulse of reentry, (2) determine the effect of magnus force on the roll rate and angle of attack of the GPHS during an EGA entry, (3) determine the effect of the magnitude of pitch and roll damping on the GPHS motion.

Sharbaugh, R.C.

1992-03-23T23:59:59.000Z

137

Eliminating livelock by assigning the same priority state to each message that is inputted into a flushable routing system during N time intervals  

DOE Patents (OSTI)

Livelock-free message routing is provided in a network of interconnected nodes that is flushable in time T. An input message processor generates sequences of at least N time intervals, each of duration T. An input register provides for receiving and holding each input message, where the message is assigned a priority state p during an nth one of the N time intervals. At each of the network nodes a message processor reads the assigned priority state and awards priority to messages with priority state (p-1) during an nth time interval and to messages with priority state p during an (n+1) th time interval. The messages that are awarded priority are output on an output path toward the addressed output message processor. Thus, no message remains in the network for a time longer than T.

Faber, Vance (Los Alamos, NM)

1994-01-01T23:59:59.000Z

138

Eliminating livelock by assigning the same priority state to each message that is input into a flushable routing system during N time intervals  

DOE Patents (OSTI)

Livelock-free message routing is provided in a network of interconnected nodes that is flushable in time T. An input message processor generates sequences of at least N time intervals, each of duration T. An input register provides for receiving and holding each input message, where the message is assigned a priority state p during an nth one of the N time intervals. At each of the network nodes a message processor reads the assigned priority state and awards priority to messages with priority state (p-1) during an nth time interval and to messages with priority state p during an (n+1) th time interval. The messages that are awarded priority are output on an output path toward the addressed output message processor. Thus, no message remains in the network for a time longer than T. 4 figures.

Faber, V.

1994-11-29T23:59:59.000Z

139

Evaluation of Cross-Hole Seismic Tomography for Imaging Low Resistance Intervals and Associated Carbonate Sediments in Coastal Plain Sequences on the Savannah River Site, South Carolina  

Science Conference Proceedings (OSTI)

The objectives of the pilot study were to investigate the limitations of the technique for imaging the presence, extent, and boundaries of the low-resistance intervals and associated carbonate sediments.

Cumbest, R. J.

1999-01-05T23:59:59.000Z

140

The existence of multiple positive solutions to boundary value problems of nonlinear delay differential equations with countably many singularities on infinite interval  

Science Conference Proceedings (OSTI)

In this paper, we consider the existence of countably many positive solutions to a boundary value problem of a nonlinear delay differential equation with countably many singularities on infinite interval (@f(x^'(t)))^'+a(t)f(t,x(t),x"t)=0,0~x^'(t)=0, ... Keywords: 34B18, 34B40, Boundary value problems, Delay differential equations, Infinite interval, Positive solutions

Yuming Wei; Patricia J. Y. Wong; Weigao Ge

2010-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
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141

Power law burst and inter-burst interval distributions in the solar wind: turbulence or dissipative SOC ?  

E-Print Network (OSTI)

We calculate for the first time the probability density functions (PDFs) P of burst energy e, duration T and inter-burst interval tau for a known turbulent system in nature. Bursts in the earth-sun component of the Poynting flux at 1 AU in the solar wind were measured using the MFI and SWE experiments on the NASA WIND spacecraft. We find P(e) and P(T) to be power laws, consistent with self-organised criticality (SOC). We find also a power law form for P(tau) that distinguishes this turbulent cascade from the exponential P(tau) of ideal SOC, but not from some other SOC-like sandpile models. We discuss the implications for the relation between SOC and turbulence.

M. P. Freeman; N. W. Watkins; D. J. Riley

2000-03-08T23:59:59.000Z

142

Preliminary summary of the observations of the 16 February 1984 solar flare (STIP interval XV, 12-21 February 1984)  

Science Conference Proceedings (OSTI)

The solar flare on 16 Feb. 1984 (0900 UT) and the associated photon and particle emissions were perhaps the most interesting solar and interplanetary phenomena during STIP Interval XV, 12 to 21 Feb. 1984. The x-ray and microwave radio emissions, as observed from the Earth, were relatively weak and no optical flare was reported. However, the hard x-ray and low energy gamma-ray observations made with the Pioneer Venus Orbiter spacecraft behind the west limb of the Sun indicate that the flare was, in reality, very intense. There is evidence that the flare was located approx 40 deg behind the west limb of the Sun and hence, for instruments located near the Earth, the most intense parts of the x-ray and microwave radio sources were occulted by the photosphere. However, the effect of occultation on the metric type II, type III, and type IV and decimetric (type DCIM) radio sources appeared to be relatively small. Following the flare, a large increase in the counting rates was recorded by several ground level neutron monitors and energetic particle detectors located in interplanetary space. A preliminary analysis of the 16 Feb. 1984 flare observations follows.

Kane, S.R.; Urbarz, H.W.

1987-01-01T23:59:59.000Z

143

Time-dependent hydrogen and helium pressure profiles in a long, cryogenically cooled tube, pumped at periodic intervals  

DOE Green Energy (OSTI)

Many particle accelerators and colliders throughout the world make use of superconducting magnets to focus highly relativistic beams. These magnets are cooled to [approximately]4.2[degree]K For practical reasons, the beam pipes, encircled by the magnets, also operate at these cryogenic temperatures. This paper presents a theoretical model for determining pressure profiles, in space and time, stemming from either hydrogen or helium gas leak into the cold-bore tube with appendage pumps located at periodic intervals. It is shown that a wave-like pressure gradient propagates from the leak source at a rate which is dependent on the leak magnitude, gas species, speed and location of appendage pumps, and the geometry and effective roughness of the cold-bore tube. Steady-state, linear pressure gradients eventually equilibrate between the appendage pumps in a magnitude commensurate with both the adsorption isotherm of the species and mass flow in the beam pipe. Results are given for a variety of conditions relevant to the Relativistic Heavy Ion Collider being constructed at Brookhaven, and a general procedure, with expressions, is provided for the making of similar calculations in other installations.

Hobson, J.P. (National Vacuum Technologies, Inc., Ontario (Canada)); Welch, K.M. (Brookhaven National Lab., Upton, NY (United States))

1992-01-01T23:59:59.000Z

144

300-Area VOC Program Slug Test Characterization Results for Selected Test/Depth Intervals Conducted During the Drilling of Well 399-3-21  

SciTech Connect

This report presents brief test descriptions and analysis results for multiple, stress-level slug tests that were performed at selected test/depth intervals within well 399-3-21 as part of the 300-Area volatile organic compound characterization program. The test intervals were characterized as the borehole was advanced to its final drill depth (45.7 m) and before its completion as a monitor-well facility. The primary objective of the slug tests was to provide information pertaining to the vertical distribution of hydraulic conductivity with depth at this location and to select the final screen-depth interval for the monitor well. This type of characterization information is important for predicting/simulating contaminant migration (i.e., numerical flow/transport modeling) and designing proper monitor-well strategies within this area.

Spane, Frank A.

2007-07-19T23:59:59.000Z

145

Intra-Set Rest Intervals in Hypertrophic Training: Effects on Hypertrophy, Strength, Power, and Myosin Heavy Chain Composition  

E-Print Network (OSTI)

The purpose of this study was to compare the effects of intra-set rest intervals (ALT) and traditional resistance (STD) training in hypertrophic resistance training. 22 males (25 +/- 5yrs, 179.71 +/- 5.0cm, 82.1 +/- 10.6kg, 13.6 +/- 4.3% fat, 6.5 +/- 4.5yrs training) were matched according to baseline characteristics and randomly assigned to a STD or ALT 12 week hypertrophic training protocol. Body composition, strength (1RM bench and squat); power (60% 1RM bench and squat); and vertical jump were assessed at baseline, 4, 8, and 12 weeks. Muscle biopsy for myosin heavy chain (MHC) was performed pre and post training. A 2 x 4 (Group x Time) ANOVA was used to assess changes in body composition. A 2 x 4 (Group x Time) ANCOVA covaried by baseline performance measures was used to assess differences in strength and power characteristics. A 2 x 2 (Group x Time) ANCOVA covaried for baseline percentage MHC was used to determine differences pre and post training. Both groups experienced increases in FFM with no differences between groups (62.6 +/- 7.9, 63.4 +/- 7.6, 64.2 +/- 7.4, 64.2 +/- 7.5kg; p>0.05). No time effects were noted in percent fat (13.6 +/- 4.3, 14.1 +/- 4.7, 14.0 +/- 4.6, 14.3 +/- 4.6%fat; p>0.05). Increase in FFM was associated with a decrease in MHCIIX, (ALT, -37.9 +/- 24.1%; STD, -23.4 +/- 23.8%; p = 0.001) and an increase in MHCIIA (ALT, 32.0 +/- 28.8%; STD, 25.4 +/- 29.1%; p = 0.001) with no difference between groups. A significant interaction was observed with the ALT group experiencing greater gains in both 1RM bench (STD 104.1 +/- 27.6, 102.7 +/- 29.0, 107.0 +/- 25.3, 113.2 +/- 27.3; ALT 110.9 +/- 20.1, 117.5 +/- 23.7, 120.8 +/- 22.6, 126 +/- 22.8; p<0.05) and 1RM squat (STD 123.3 +/- 39.3, 139.6 +/- 38.8, 160.2 +/- 36.1, 171.8 +/- 34.5; ALT 130.1 +/- 25.1, 152.6 +/- 24.8, 179.8 +/- 24.5, 193.9 +/- 24.2kg; p<0.05). The ALT group experienced greater gains in power in both the bench (STD 560 +/- 122, 541 +/- 105, 572 +/- 122, 593 +/- 135W; ALT 575 +/- 102, 586 +/- 123, 646 +/- 103, 658 +/- 113W; p<0.05) and vertical jump (STD 1378 +/- 237, 1418 +/- 214, 1452 +/- 210, 1470 +/- 215W; ALT 1389 +/- 179, 1434 +/- 152, 1470 +/- 149, 1537 +/- 150W;p<0.05), with gains in squat power approaching significance (STD 625 +/- 245, 704 +/- 233, 723 +/- 227, 830 +/- 232W; ALT 632 +/- 171, 734 +/- 179, 783 +/- 188, 914 +/- 207W; p<0.10). The use of intra-set rest intervals in programs designed to elicit hypertrophy results in greater gains in strength and power with no significant difference in lean mass or MHC composition after a 12 week resistance training program designed to elicit hypertrophy.

Oliver, Jonathan

2012-08-01T23:59:59.000Z

146

A Prolonged Time Interval Between Trauma and Prophylactic Radiation Therapy Significantly Increases the Risk of Heterotopic Ossification  

SciTech Connect

Purpose: To ascertain whether the time from injury to prophylactic radiation therapy (RT) influences the rate of heterotopic ossification (HO) after operative treatment of displaced acetabular fractures. Methods and Materials: This is a single-institution, retrospective analysis of patients referred for RT for the prevention of HO. Between January 2000 and January 2009, 585 patients with displaced acetabular fractures were treated surgically followed by RT for HO prevention. We analyzed the effect of time from injury on prevention of HO by RT. In all patients, 700 cGy was prescribed in a single fraction and delivered within 72 hours postsurgery. The patients were stratified into five groups according to time interval (in days) from the date of their accident to the date of RT: Groups A {<=}3, B {<=}7, C {<=}14, D {<=}21, and E >21days. Results: Of the 585 patients with displaced acetabular fractures treated with RT, (18%) 106 patients developed HO within the irradiated field. The risk of HO after RT increased from 10% for RT delivered {<=}3 days to 92% for treatment delivered >21 days after the initial injury. Wilcoxon test showed a significant correlation between the risk of HO and the length of time from injury to RT (p < 0.0001). Chi-square test and multiple logistic regression analysis showed no significant association between all other factors and the risk of HO (race, gender, cause and type of fracture, surgical approach, or the use of indomethacin). Conclusions: Our data suggest that there is higher incidence and risk of HO if prophylactic RT is significantly delayed after a displaced acetabular fracture. Thus, RT should be administered as early as clinically possible after the trauma. Patients undergoing RT >3 weeks from their displaced acetabular fracture should be informed of the higher risk (>90%) of developing HO despite prophylaxis.

Mourad, Waleed F., E-mail: Waleed246@gmail.com [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS (United States); Department of Radiation Oncology, Beth Israel Medical Center, New York, NY (Israel); Packianathan, Satyaseelan [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS (United States); Shourbaji, Rania A. [Department of Epidemiology and Biostatistics, Jackson State University, Jackson, MS (United States); Zhang Zhen; Graves, Mathew [Department of Orthopedic Surgery, University of Mississippi Medical Center, Jackson, MS (United States); Khan, Majid A. [Department of Radiology, University of Mississippi Medical Center, Jackson, MS (United States); Baird, Michael C. [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS (United States); Russell, George [Department of Orthopedic Surgery, University of Mississippi Medical Center, Jackson, MS (United States); Vijayakumar, Srinivasan [Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS (United States)

2012-03-01T23:59:59.000Z

147

STIP symposium on physical interpretation of solar/interplanetary and cometary intervals. Final report, 1 April-30 September 1987. Abstracts only  

SciTech Connect

The study of travelling interplanetary phenomena has continued over a period of years. The STIP (Study of Travelling Interplanetary Phenomena) Symposium on Physical Interpretation of Solar/Interplanetary and Cometary Intervals was held in Huntsville, Alabama, on May 12-15, 1987, the first of these meetings to be held in the United States. The Symposium's objective was to coordinate and disseminate new science gained from the recent solar-terrestrial and cometary intervals which can be used to better understand the linkage of physical events to the Sun's vagaries (flares, coronal holes, eruptive prominences) from their initial detection to their consequence. Fifty-one presentations were made during the four-day period. Abstracts of these reports are included as Appendix A.

Not Available

1987-09-01T23:59:59.000Z

148

Scientific highlights of the Study of Travelling Interplanetary Phenomena (STIP) intervals during the SMY/SMA (Solar Maximum Year/Solar Maximum Analysis)  

Science Conference Proceedings (OSTI)

The STIP Project was instrumental in the coordination of multi-disciplinary ground-and -space-based synoptic observations and analysis of solar/interplanetary events during the period covered by the Solar Maximum Year and Solar Maximum Analysis. Eight STIP Intervals for coordinated studies were conducted during the SMY/SMA period starting with STIP Interval VII (August 1979) and ending with Interval XIV (20 May - 20 July 1982). These results increased our understanding and knowledge of a variety of phenomena including coronal mass ejections (CMEs) and their in situ shock wave detections within 1 AU; shock physics; acceleration of particles at variously classified shocks by V x B drift and Fermi mechanisms; magnetic clouds; interplanetary disturbances; x-ray imaging of preflare and flare-generated CMEs, and white light imaging of CMEs during SMY by both spacecraft and ground-based instruments. In addition, scientific progress was made on the tracking of disturbances (initiated by flares, eruptive prominences, and coronal holes) into interplanetary space as well as some of their consequences as observed at 1 AU and throughout the heliosphere.

Dryer, M.; Shea, M.A.

1986-01-01T23:59:59.000Z

149

3-D structural and seismic stratigraphic interpretation of the Guasare-Misoa Interval, VLE 196 Area, Block V, Lamar Field, Lake Maracaibo, Venezuela  

E-Print Network (OSTI)

In this study, the structure, depositional system, and the seismic stratigraphy of the VLE 196 area, Block V in Lamar Field were interpreted using 3-D seismic data and well logs to characterize structural and depositional settings of the Guasare-Misoa interval. To demonstrate structural settings of the study area 3-D seismic data were interpreted. Three main seismic reflectors, which are the Late Eocene unconformity, Guasare, and La Luna formations, were picked. The most dominant structure in the area is the VLE 400 Fault which was interpreted as a left-lateral strike-slip reverse fault due to its behaviors as a reverse fault in cross sections and as a strike-slip fault in strike sections. The VLE 400 Fault subdivides the VLE 196 area into two main structural blocks, a downthrown block in the western part and the upthrown block in the eastern part of the field where the hydrocarbons were trapped. Several en echelon normal and reverse faults were located along the both sides of the area. The main importance of these faults are that they fractured the La Luna source rock and created migration pathways through the reservoir layers of the Misoa Formation. To interpret depositional system of the Guasare-Misoa interval, tops of the C4 and C5 intervals and associated C4 layers were picked based on well logs and lithofacies maps were prepared. The results of this part of the study show that the sandstones of the Misoa Formation are delta front and fluvial/distributary channel facies of delta system. The net sand thickness map of the C4 interval also exhibits southeast northwest contour patterns reflecting depositional axes in the area. Shaly units of the C4 interval interpreted as potential seals and are of variable thickness and extend. Seismic stratigraphic interpretation of the area shows that the four main seismic facies are dominant which mainly represent the recent sediments, "C" sands of the Misoa Formation, underlying Colon and Mito Juan shales, and basement respectively. Some distributary eroded channel fill structures were also observed within the Misoa Formation, but they were not continuous through the area because of the intensive faulting.

Arzuman, Sadun

2002-12-01T23:59:59.000Z

150

EFFECTS OF NON-CIRCULAR MOTIONS ON AZIMUTHAL COLOR GRADIENTS  

Science Conference Proceedings (OSTI)

Assuming that density waves trigger star formation, and that young stars preserve the velocity components of the molecular gas where they are born, we analyze the effects that non-circular gas orbits have on color gradients across spiral arms. We try two approaches, one involving semianalytical solutions for spiral shocks, and another with magnetohydrodynamic (MHD) numerical simulation data. We find that, if non-circular motions are ignored, the comparison between observed color gradients and stellar population synthesis models would in principle yield pattern speed values that are systematically too high for regions inside corotation, with the difference between the real and the measured pattern speeds increasing with decreasing radius. On the other hand, image processing and pixel averaging result in systematically lower measured spiral pattern speed values, regardless of the kinematics of stellar orbits. The net effect is that roughly the correct pattern speeds are recovered, although the trend of higher measured OMEGA{sub p} at lower radii (as expected when non-circular motions exist but are neglected) should still be observed. We examine the MartInez-GarcIa et al. photometric data and confirm that this is indeed the case. The comparison of the size of the systematic pattern speed offset in the data with the predictions of the semianalytical and MHD models corroborates that spirals are more likely to end at outer Lindblad resonance, as these authors had already found.

Martinez-Garcia, Eric E. [Centro de Investigaciones de Astronomia, Apartado Postal 264, Merida 5101-A (Venezuela, Bolivarian Republic of); Gonzalez-Lopezlira, Rosa A.; Gomez, Gilberto C., E-mail: emartinez@cida.v, E-mail: r.gonzalez@crya.unam.m, E-mail: g.gomez@crya.unam.m [Centro de Radioastronomia y Astrofisica, UNAM, Campus Morelia, Michoacan, C.P. 58089 (Mexico)

2009-12-20T23:59:59.000Z

151

EVALUATION OF SPRING OPERATED RELIEF VALVE MAINTENANCE INTERVALS AND EXTENSION OF MAINTENANCE TIMES USING A WEIBULL ANALYSIS WITH MODIFIED BAYESIAN UPDATING  

Science Conference Proceedings (OSTI)

The Savannah River Site (SRS) spring operated pressure relief valve (SORV) maintenance intervals were evaluated using an approach provided by the American Petroleum Institute (API RP 581) for risk-based inspection technology (RBI). In addition, the impact of extending the inspection schedule was evaluated using Monte Carlo Simulation (MCS). The API RP 581 approach is characterized as a Weibull analysis with modified Bayesian updating provided by SRS SORV proof testing experience. Initial Weibull parameter estimates were updated as per SRS's historical proof test records contained in the Center for Chemical Process Safety (CCPS) Process Equipment Reliability Database (PERD). The API RP 581 methodology was used to estimate the SORV's probability of failing on demand (PFD), and the annual expected risk. The API RP 581 methodology indicates that the current SRS maintenance plan is conservative. Cost savings may be attained in certain mild service applications that present low PFD and overall risk. Current practices are reviewed and recommendations are made for extending inspection intervals. The paper gives an illustration of the inspection costs versus the associated risks by using API RP 581 Risk Based Inspection (RBI) Technology. A cost effective maintenance frequency balancing both financial risk and inspection cost is demonstrated.

Harris, S.; Gross, R.; Mitchell, E.

2011-01-18T23:59:59.000Z

152

Follow-up investigations of GPHS motion during heat pulse intervals of reentries from gravity-assist trajectories. Aerospace Nuclear Safety Program  

DOE Green Energy (OSTI)

Motion studies of the General Purpose Heat Source Module, GPHS, which were conducted in the heat pulse intervals associated with entries from earth gravity assist trajectories. The APL six-degree-of-freedom reentry program designated TMAGRA6C was used. The objectives of the studies were to (1) determine whether the GPHS module entering the earth`s atmosphere from an earth-gravity-assist trajectory has a preferred orientation during the heat pulse of reentry, (2) determine the effect of magnus force on the roll rate and angle of attack of the GPHS during an EGA entry, (3) determine the effect of the magnitude of pitch and roll damping on the GPHS motion.

Sharbaugh, R.C.

1992-03-23T23:59:59.000Z

153

Resource Allocation with Time Intervals  

E-Print Network (OSTI)

0 , tj > sj, is assigned such that the resource consumption occurs only ... project requires an amount wj of a limited resource such as labor, workspace or energy.

154

Probabilistic Interval XML EDWARD HUNG  

E-Print Network (OSTI)

by the Croucher Foundation Scholarships. The work was supported by the Air Force Office of Scientific Research with the full citation. Copyrights for components of this work owned by others than ACM must be honored/or a fee. Permissions may be requested from Publications Dept., ACM, Inc., 2 Penn Plaza, Suite 701, New

Hung, Edward

155

Slug Test Characterization Results for Multi-Test/Depth Intervals Conducted During the Drilling of CERCLA Operable Unit OU ZP-1 Wells 299-W11-43, 299-W15-50, and 299-W18-16  

SciTech Connect

The following report presents test descriptions and analysis results for multiple, stress level slug tests that were performed at selected test/depth intervals within three Operable Unit (OU) ZP-1 wells: 299-W11-43 (C4694/Well H), 299-W15-50 (C4302/Well E), and 299-W18-16 (C4303/Well D). These wells are located within south-central region of the Hanford Site 200-West Area (Figure 1.1). The test intervals were characterized as the individual boreholes were advanced to their final drill depths. The primary objective of the hydrologic tests was to provide information pertaining to the areal variability and vertical distribution of hydraulic conductivity with depth at these locations within the OU ZP-1 area. This type of characterization information is important for predicting/simulating contaminant migration (i.e., numerical flow/transport modeling) and designing proper monitor well strategies for OU and Waste Management Area locations.

Spane, Frank A.; Newcomer, Darrell R.

2010-06-21T23:59:59.000Z

156

Slug Test Characterization Results for Multi-Test/Depth Intervals Conducted During the Drilling of CERCLA Operable Unit OU ZP-1 Wells 299-W10-33 and 299-W11-48  

SciTech Connect

Slug-test results obtained from single and multiple, stress-level slug tests conducted during drilling and borehole advancement provide detailed hydraulic conductivity information at two Hanford Site Operable Unit (OU) ZP-1 test well locations. The individual test/depth intervals were generally sited to provide hydraulic-property information within the upper ~10 m of the unconfined aquifer (i.e., Ringold Formation, Unit 5). These characterization results complement previous and ongoing drill-and-test characterization programs at surrounding 200-West and -East Area locations (see Figure S.1).

Newcomer, Darrell R.

2007-09-30T23:59:59.000Z

157

Confidence Intervals of a Climatic Signal  

Science Conference Proceedings (OSTI)

In order to interpret climate statistics correctly, the definitions of climate change, signal-to-noise ratio and statistical significance are clarified.

Yoshikazu Hayashi

1982-09-01T23:59:59.000Z

158

RECIPE : REGression Confidence Intervals for PErcentiles  

Science Conference Proceedings (OSTI)

... PDF (Portable Document Format) and requires Adobe Acrobat to be loaded to allow ... is recommended that you install the reader as a plug-in rather ...

159

Solving discrete minimax problems using interval arithmetic  

E-Print Network (OSTI)

In our scheme search is performed according to the best-first strategy where the ..... International Dagstuhl Seminar, Dagstuhl Castle, Germany, January 19-24, ...

160

Polar-azimuthal angle dependent efficiency of different infrared superconducting nanowire single-photon detector designs  

E-Print Network (OSTI)

The illumination-angle-dependent absorptance was determined for three types of superconducting-nanowire singlephoton detector (SNSPD) designs: 1. periodic bare niobium-nitride (NbN) stripes with dimensions of conventional ...

Csete, Maria

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
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161

Angular distribution and azimuthal asymmetry for pentaquark production in proton-proton collisions  

E-Print Network (OSTI)

Angular distributions for production of the $\\Theta^+$ pentaquark are calculated for the collisions of polarized protons with polarized target protons. We compare calculations based on different assumptions concerning spin and parity ($J=1/2^\\pm,3/2^\\pm$) of the $\\Theta^+$ state. For a wide class of interactions the spin correlation parameters describing the asymmetric angular distributions are calculated up to 250 MeV above production threshold. The deviations from the near threshold behavior are investigated.

H. W. Barz; M. Zetenyi

2004-11-01T23:59:59.000Z

162

Effect of the azimuthal inhomogeneity of electron emission on gyrotron operation  

E-Print Network (OSTI)

) Institute for Plasma Research, University of Maryland, College Park, Maryland 20742 A. N. Vlasov Science for Plasma Research, University of Maryland, College Park, Maryland 20742 S. Cauffman and K. Felch Microwave

Nusinovich, Gregory S.

163

Oscillations in Mesocyclone Signatures with Range Owing to Azimuthal Radar Sampling  

Science Conference Proceedings (OSTI)

When a thunderstorm mesocyclone changes range relative to a Doppler radar, the deduced core diameter and mean rotational velocity of the Doppler velocity mesocyclone signature oscillate back and forth, even though the radar beam’s physical width ...

Vincent T. Wood; Rodger A. Brown

2000-01-01T23:59:59.000Z

164

Azimuthal Offset-Dependent Attributes (AVO And FVO) Applied To Fracture Detection  

E-Print Network (OSTI)

Using the amplitude versus offset (AVO) and the frequency versus offset (FVO) information, the diagnostic ability of P-wave seismic data in fracture detection is investigated. The offset-dependent attributes (AVO and FVO) ...

Shen, Feng

1999-01-01T23:59:59.000Z

165

Optimized polar-azimuthal orientations for polarized light illumination of different superconducting nanowire single-photon detector designs  

E-Print Network (OSTI)

The optimum orientations were determined for polarized light illumination of three superconducting nanowire single-photon detector (SNSPD) designs consisting of niobium-nitride (NbN) stripes with dimensions according to ...

Csete, Maria

166

WTI Crude Oil Price: Base Case and 95% Confidence Interval  

Gasoline and Diesel Fuel Update (EIA)

7 7 Notes: Spot WTI prices broke $35 and even $36 per barrel in November as anticipated boosts to world supply from OPEC and other sources failed to find much realization in actual stocks data. The idea that stocks are still languishing at below-normal levels is particularly persuasive when one views current levels (for key consuming regions) relative to "normal" values which account for the long-term trend in OECD stocks. We believe that monthly average WTI prices will stay around $30 per barrel for the first part of 2001. This is a noticeable upward shift in our projected average prices from even a month ago. The shift reflects greater emphasis on the lack of stock builds and less emphasis on the assumption that supply from OPEC and non-OPEC suppliers may be exceeding demand by 1-2

167

WTI Crude Oil Price: Base Case and 95% Confidence Interval  

Gasoline and Diesel Fuel Update (EIA)

9 9 Notes: Spot WTI prices broke $35 and even $36 per barrel in November as anticipated boosts to world supply from OPEC and other sources did not show up in actual stocks data. The recent decline in prices seems to be more the result of an unraveling of speculative pressures than a change in underlying fundamentals. Prices had been running higher than supply/demand fundamentals would have indicated throughout the fall months as a result of rising Mideast tensions, concern over the adequacy of distillate supplies, and expectations of Iraqi supply interruptions. But Mideast tensions seemed to ease in December and the market appeared to perceive a quick return of Iraqi crude oil supplies at full capacity. Pledges by Saudi Arabia/OPEC to offset a longer term Iraqi

168

WTI Crude Oil Price: Base Case and 95% Confidence Interval  

Gasoline and Diesel Fuel Update (EIA)

6 6 Notes: Spot WTI crude oil prices broke $35 and even $36 per barrel in November as anticipated boosts to world supply from OPEC and other sources did not show up in actual stocks data. The recent decline in prices seems to be more the result of an unraveling of speculative pressures than a change in underlying fundamentals. Prices had been running higher than supply/demand fundamentals would have indicated throughout the fall months as a result of rising Mideast tensions, concern over the adequacy of distillate supplies, and expectations of Iraqi supply interruptions. But Mideast tensions seemed to ease in December and the market appeared to perceive a quick return of Iraqi crude oil supplies at full capacity. Pledges by Saudi Arabia/OPEC to offset a longer term Iraqi

169

Dynamic CSPs for Interval-Based Temporal Reasoning  

Science Conference Proceedings (OSTI)

Many applications such as planning, scheduling, computational linguistics and computational models for molecular biology involve systems capable of managing qualitative and metric time information. An important issue in designing such systems is the ... Keywords: dynamic arc consistency, planning, scheduling, temporal reasoning

Malek Mouhoub; Jonathan Yip

2002-06-01T23:59:59.000Z

170

Natural Gas Spot Prices: Base Case and 95% Confidence Interval  

U.S. Energy Information Administration (EIA)

Spot prices at the Henry Hub traded at a midpoint of $6.91 per MMBtu on Wednesday. This is the first time the price has been below $7.00 since December 1, ...

171

Filters and Approximate Confidence Intervals for Interpreting Rainfall Anomaly indices  

Science Conference Proceedings (OSTI)

The rainfall anomaly index (RAI) has been widely used to study variations over time in Sahelian rainfall. Its interpretation is often complicated by excessive missing data and changes in station network, both of which prevent a precise ...

L. Bärring; M. Hulme

1991-08-01T23:59:59.000Z

172

Multiple Imputation for Threshold-Crossing Data with Interval Censoring  

E-Print Network (OSTI)

A. ‘Incomplete data in event history analysis’, in Trussell,Applications of Event History Analysis, Clarendon Press,covariate in the analysis of a subsequent event. This paper

Fredierick J. Dorey; Roderick J.A. Little; Nathaniel Schenker

2011-01-01T23:59:59.000Z

173

Development of Algorithms for Decision Analysis with Interval Information  

Science Conference Proceedings (OSTI)

Multi-criteria decision analysis can be a useful tool in routing out and ranking different alternatives. However, many such analyses involve imprecise information, including estimates of utilities, outcome probabilities and criteria weights. This paper ... Keywords: Decision Analysis, Multi-Linear Programming, Optimisation, Program Efficiency

Mats Danielson; Love Ekenberg

2009-07-01T23:59:59.000Z

174

WTI Crude Oil Price: Base Case and 95% Confidence Interval  

U.S. Energy Information Administration (EIA)

Pledges by Saudi Arabia/OPEC to offset a longer term Iraqi disruption added to a market sense of oversupply. Relatively mild weather in Europe allowed distillate ...

175

GLOBAL OPTIMIZATION OF PIPE NETWORKS BY THE INTERVAL ...  

E-Print Network (OSTI)

the sum of cost of energy used by the compressors, and of the net revenue ... The DC (difference of convex functions approach, see e.g. Horst and Tuy [14]).

176

Cultural consensus theory: aggregating continuous responses in a finite interval  

Science Conference Proceedings (OSTI)

Cultural consensus theory (CCT) consists of cognitive models for aggregating responses of “informants” to test items about some domain of their shared cultural knowledge. This paper develops a CCT model for items requiring bounded numerical ... Keywords: cognitive models, cross-cultural study, cultural Consensus Theory

William H. Batchelder; Alex Strashny; A. Kimball Romney

2010-03-01T23:59:59.000Z

177

Estimating Realistic Confidence Intervals for the Activation Energy Determined from  

E-Print Network (OSTI)

for the Simul- taneous Measurement of Calorimetric and Rheological Evolutions", Rev. Sci. Instr., 79, 023905-008-0273-4 Titomanlio, G., et al., "On the Simulation of Thermoplastic Injection Moulding Process. 2 Relevance Lags during Poly- mer Solidification", Thermochim. Acta, 413, 101­110 (2004), DOI:10.1016/j.tca.2003

Utah, University of

178

WTI Crude Oil Price: Base Case and 95% Confidence Interval  

U.S. Energy Information Administration (EIA)

Prices had been running higher than supply/demand fundamentals would have indicated throughout the fall months as a result of rising Mideast tensions, ...

179

On Common Intervals with Errors - PUB - Publikationen an der ...  

E-Print Network (OSTI)

Oct 23, 2006 ... though at the price of apparently higher problem complexities. Based on ...... Trends in Biochemical Sciences, 25(10):474?479, 2000. .... 2001-03 A Rotamer Library for Protein-Protein Docking Using Energy Calculations and.

180

Gauge Theories on an Interval: Unitarity Without a Higgs Boson  

E-Print Network (OSTI)

breaking without a Higgs boson. Gauge Theories on anscattering amplitude. The Higgs boson is localized at y = ?Rreal scalar ?eld, the Higgs boson. At tree level, the

Csaki, Csaba; Grojean, Christophe; Murayama, Hitoshi; Luigi, Pilo; Terning, John

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Weibull Prediction Intervals for a Future Number of Failures  

E-Print Network (OSTI)

,000 stainless steel tubes that conduct the ow of steam. Due to stress and corrosion, the tubes develop cracks over time. Cracks are detected during planned inspections. The cracked tubes are subsequently plugged

182

Weibull Prediction Intervals for a Future Number of Failures  

E-Print Network (OSTI)

,000 stainless steel tubes that conduct the flow of steam. Due to stress and corrosion, the tubes develop cracks over time. Cracks are detected during planned inspections. The cracked tubes are subsequently plugged

183

Point-Wise Confidence Interval Estimation by Neural Networks: A ...  

Science Conference Proceedings (OSTI)

As the human errors cannot be accurately captured (or corrected) by a neural network, it is considered that the values in the map are reasonably accurate and  ...

184

Confidence Intervals for the Hyperparameters in Structural Models  

E-Print Network (OSTI)

Gerais, 31270-901 - Belo Horizonte - MG, Brazil E-mail: {glauraf,thiagors,jujujar,fcruz}@ufmg.br November. The performance of this procedure is empirically obtained through Monte Carlo simulations implemented in Ox. Asymp

Cruz, Frederico

185

Path predicate abstraction by complete interval property checking  

Science Conference Proceedings (OSTI)

This paper describes a method to create an abstract model from a set of properties fulfilling a certain completeness criterion. The proposed abstraction can be understood as a path predicate abstraction. As in predicate abstraction, certain concrete ...

Joakim Urdahl; Dominik Stoffel; Jörg Bormann; Markus Wedler; Wolfgang Kunz

2010-10-01T23:59:59.000Z

186

Combining interval-based temporal reasoning with general TBoxes  

Science Conference Proceedings (OSTI)

While classical Description Logics (DLs) concentrate on the representation of static conceptual knowledge, recently there is a growing interest in DLs that, additionally, allow to capture the temporal aspects of conceptual knowledge. Such temporal DLs ... Keywords: complexity, description logic, temporal reasoning, tree automata

Carsten Lutz

2004-02-01T23:59:59.000Z

187

Solving Stability Problems on a Superclass of Interval Graphs  

E-Print Network (OSTI)

are reviewed in Section 4; in the following we introduce a new one based on ...... Additional hard constraints may derive from mobility requirements (handover).

188

The velocity campaign for ignition on NIF  

SciTech Connect

Achieving inertial confinement fusion ignition requires a symmetric, high velocity implosion. Experiments show that we can reach 95 {+-} 5% of the required velocity by using a 420 TW, 1.6 MJ laser pulse. In addition, experiments with a depleted uranium hohlraum show an increase in capsule performance which suggests an additional 18 {+-} 5 {mu}m/ns of velocity with uranium hohlraums over gold hohlraums. Combining these two would give 99 {+-} 5% of the ignition velocity. Experiments show that we have the ability to tune symmetry using crossbeam transfer. We can control the second Legendre mode (P2) by changing the wavelength separation between the inner and outer cones of laser beams. We can control the azimuthal m = 4 asymmetry by changing the wavelength separation between the 23.5 and 30 degree beams on NIF. This paper describes our 'first pass' tuning the implosion velocity and shape on the National Ignition Facility laser [Moses et al., Phys. Plasmas, 16, 041006 (2009)].

Callahan, D. A.; Meezan, N. B.; Glenzer, S. H.; MacKinnon, A. J.; Benedetti, L. R.; Bradley, D. K.; Celeste, J. R.; Celliers, P. M.; Dixit, S. N.; Doeppner, T.; Dzentitis, E. G.; Glenn, S.; Haan, S. W.; Haynam, C. A.; Hicks, D. G.; Hinkel, D. E.; Jones, O. S.; Landen, O. L.; London, R. A.; MacPhee, A. G. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); and others

2012-05-15T23:59:59.000Z

189

An Evaluation of the Carbon Sequestration Potential of the Cambro-Ordovician Strata of the Illinois and Michigan Basins: Part 1: Evaluation of Phase 2 CO{sub 2} Injection Testing in the Deep Saline Gunter Sandstone Reservoir (Cambro-Ordovician Knox Group), Marvin Blan No. 1 Hancock County, Kentucky Part 2: Time-lapse Three-Dimensional Vertical Seismic Profile (3D-VSP) of Sequestration Target Interval with Injected Fluids  

SciTech Connect

Part 1 of this report focuses on results of the western Kentucky carbon storage test, and provides a basis for evaluating injection and storage of supercritical CO{sub 2} in Cambro-Ordovician carbonate reservoirs throughout the U.S. Midcontinent. This test demonstrated that the Cambro- Ordovician Knox Group, including the Beekmantown Dolomite, Gunter Sandstone, and Copper Ridge Dolomite in stratigraphic succession from shallowest to deepest, had reservoir properties suitable for supercritical CO{sub 2} storage in a deep saline reservoir hosted in carbonate rocks, and that strata with properties sufficient for long-term confinement of supercritical CO{sub 2} were present in the deep subsurface. Injection testing with brine and CO{sub 2} was completed in two phases. The first phase, a joint project by the Kentucky Geological Survey and the Western Kentucky Carbon Storage Foundation, drilled the Marvin Blan No. 1 carbon storage research well and tested the entire Knox Group section in the open borehole � including the Beekmantown Dolomite, Gunter Sandstone, and Copper Ridge Dolomite � at 1152�2255 m, below casing cemented at 1116 m. During Phase 1 injection testing, most of the 297 tonnes of supercritical CO{sub 2} was displaced into porous and permeable sections of the lowermost Beekmantown below 1463 m and Gunter. The wellbore was then temporarily abandoned with a retrievable bridge plug in casing at 1105 m and two downhole pressure-temperature monitoring gauges below the bridge plug pending subsequent testing. Pressure and temperature data were recorded every minute for slightly more than a year, providing a unique record of subsurface reservoir conditions in the Knox. In contrast, Phase 2 testing, this study, tested a mechanically-isolated dolomitic-sandstone interval in the Gunter. Operations in the Phase 2 testing program commenced with retrieval of the bridge plug and long-term pressure gauges, followed by mechanical isolation of the Gunter by plugging the wellbore with cement below the injection zone at 1605.7 m, then cementing a section of a 14-cm casing at 1470.4�1535.6. The resultant 70.1-m test interval at 1535.6�1605.7 m included nearly all of the Gunter sandstone facies. During the Phase 2 injection, 333 tonnes of CO{sub 2} were injected into the thick, lower sand section in the sandy member of the Gunter. Following the completion of testing, the injection zone below casing at 1116 m in the Marvin Blan No. 1 well, and wellbore below 305 m was permanently abandoned with cement plugs and the wellsite reclaimed. The range of most-likely storage capacities found in the Knox in the Marvin Blan No. 1 is 1000 tonnes per surface hectare in the Phase 2 Gunter interval to 8685 tonnes per surface hectare if the entire Knox section were available including the fractured interval near the base of the Copper Ridge. By itself the Gunter lacks sufficient reservoir volume to be considered for CO{sub 2} storage, although it may provide up to 18% of the reservoir volume available in the Knox. Regional extrapolation of CO{sub 2} storage potential based on the results of a single well test can be problematic, although indirect evidence of porosity and permeability can be demonstrated in the form of active saltwater-disposal wells injecting into the Knox. The western Kentucky region suitable for CO{sub 2} storage in the Knox is limited updip, to the east and south, by the depth at which the base of the Maquoketa shale lies above the depth required to ensure storage of CO{sub 2} in its supercritical state and the deepest a commercial well might be drilled for CO{sub 2} storage. The resulting prospective region has an area of approximately 15,600 km{sup 2}, beyond which it is unlikely that suitable Knox reservoirs may be developed. Faults in the subsurface, which serve as conduits for CO{sub 2} migration and compromise sealing strata, may mitigate the area with Knox reservoirs suitable for CO{sub 2} storage. The results of the injection tes

Richard Bowersox; John Hickman; Hannes Leetaru

2012-12-01T23:59:59.000Z

190

ARM - Datastreams - 915rwpwindcon  

NLE Websites -- All DOE Office Websites (Extended Search)

rwpwindcon rwpwindcon Documentation Data Quality Plots Citation DOI: 10.5439/1025135 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example 915rwpwindcon Archive Data Plot Example 915rwpwindcon Archive Data Plot Datastream : 915RWPWINDCON 915-MHz Radar Wind Profiler/RASS (RWP915): wind consensus data Active Dates 2001.03.27 - 2014.01.02 Measurement Categories Atmospheric State Originating Instrument Radar Wind Profiler (RWP) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Averaging interval min avgint ( time, power ) Azimuth of beam 0 deg azimuth0 ( power )

191

Information on a default time : Brownian bridges on a stochastic intervals and enlargement of filtrations.  

E-Print Network (OSTI)

??Dans ce travail de thèse le processus d'information concernant un instant de défaut ? dans un modèle de risque de crédit est décrit par un… (more)

Bedini, Matteo

2012-01-01T23:59:59.000Z

192

Sampling Uncertainty and Confidence Intervals for the Brier Score and Brier Skill Score  

Science Conference Proceedings (OSTI)

For probability forecasts, the Brier score and Brier skill score are commonly used verification measures of forecast accuracy and skill. Using sampling theory, analytical expressions are derived to estimate their sampling uncertainties. The Brier ...

A. Allen Bradley; Stuart S. Schwartz; Tempei Hashino

2008-10-01T23:59:59.000Z

193

Computing confidence intervals on solution costs for stochastic grid generation expansion problems.  

DOE Green Energy (OSTI)

A range of core operations and planning problems for the national electrical grid are naturally formulated and solved as stochastic programming problems, which minimize expected costs subject to a range of uncertain outcomes relating to, for example, uncertain demands or generator output. A critical decision issue relating to such stochastic programs is: How many scenarios are required to ensure a specific error bound on the solution cost? Scenarios are the key mechanism used to sample from the uncertainty space, and the number of scenarios drives computational difficultly. We explore this question in the context of a long-term grid generation expansion problem, using a bounding procedure introduced by Mak, Morton, and Wood. We discuss experimental results using problem formulations independently minimizing expected cost and down-side risk. Our results indicate that we can use a surprisingly small number of scenarios to yield tight error bounds in the case of expected cost minimization, which has key practical implications. In contrast, error bounds in the case of risk minimization are significantly larger, suggesting more research is required in this area in order to achieve rigorous solutions for decision makers.

Woodruff, David L..; Watson, Jean-Paul

2010-12-01T23:59:59.000Z

194

Analysis of single ion channel data incorporating time-interval omission  

E-Print Network (OSTI)

Xm iZ1 Bikðt�lt i for tO0; where Bik(t) is a polynomial in t of degree k with coefficients Cikr , so Bikðt� Z Xk rZ0 Cikrtr : The coefficients Cikr are nO!nO-matrices. Proof. The proof is by induction over{zfflfflfflfflfflfflfflfflfflffl} ð�� ! Clt i Xk rZ0 Cikr Xt t0Z0 t0r |fflfflffl{zfflfflffl} ð��� ! : If the terms (�) and (��

Timmer, Jens

195

Decision Making under Interval and Fuzzy Uncertainty: Towards an Operational Approach  

E-Print Network (OSTI)

,2 , Oleg H. Huseynov1 , and Vladik Kreinovich3 1 Department of Computer-Aided Control Systems Azerbaijan State Oil Academy, Baku, Azerbaijan raliev@asoa.edu.az, oleg huseynov@yahoo.com 2 Azerbaijan Association of "Zadeh's Legacy", Baku, Azerbaijan 3 Department of Computer Science, University of Texas at El Paso El

Kreinovich, Vladik

196

Confidence Intervals and Significance Tests for Spherical Data Derived from Feature Tracking  

Science Conference Proceedings (OSTI)

A methodology is described that improves the efficiency with which statistical estimates of the distribution and mean attributes of dynamical weather systems, such as extratropical cyclones and tropical easterly waves, are derived from ensembles ...

K. I. Hodges

2008-05-01T23:59:59.000Z

197

The Econometric Analysis of Interval-valued Data and Adaptive Regression Splines  

E-Print Network (OSTI)

each knot, while ours is B-splines, which is more tractableon polynomial splines (B- splines as a special case) hasspline functions known as B-spline. Theoretically, a linear

Lin, Wei

2013-01-01T23:59:59.000Z

198

Temporal analysis of clusters of supermarket customers: conventional versus interval set approach  

Science Conference Proceedings (OSTI)

Temporal data mining is the application of data mining techniques to data that takes the time dimension into account. This paper studies changes in cluster characteristics of supermarket customers over a 24 week period. Such an analysis can be useful ... Keywords: loyalty, modified kohonen SOM, rough set theory, temporal data mining

Pawan Lingras; Mofreh Hogo; Miroslav Snorek; Chad West

2005-06-01T23:59:59.000Z

199

Monitoring Tropical-Cyclone Intensity Using Environmental Wind Fields Derived from Short-Interval Satellite Images  

Science Conference Proceedings (OSTI)

Rapid-scan visible images from the Visible Infrared Spin Scan Radiometer (VISSR) sensor on board SMS-2 and GOES-1 have been used to derive high-resolution upper and lower tropospheric environmental wind fields around three western Atlantic ...

Edward Rodgers; R. Cecil Gentry

1983-05-01T23:59:59.000Z

200

Improved power source for doubling the exchange time interval of LLC.  

SciTech Connect

This LDRD project attempts to use novel electrochemical techniques to understand the reaction mechanism that limits the discharge reaction of lithium CF{sub x} chemistry. If this advanced component development and exploratory investigations efforts are successful we will have a High Energy Density Li Primary Battery Technology with the capability to double the run time in the same volume, or provide the same energy in a much smaller volume. These achievements would be a substantial improvement over commercial Li/Thionyl chloride battery technology. The Li(CF{sub x}){sub n} chemistry has the highest theoretical energy (and capacity) and hence very attractive for long life battery applications. However, the practical open circuit voltage (OCV) is only 3.2 V which is {approx}1.3 V lower than the thermodynamic cell voltage (for an in depth explanation of the voltage depression refer to 'Introduction'). The presence of intermediate has been invoked to explain the lower OCV of the cell. Due to the reduction in cell voltage the cell out put is reduced by {approx}40%. To account for the initial voltage loss a mechanism has been proposed which involves the formation of a ternary compound (like C(LiF){sub x}). But neither its presence nor its nature has been confirmed. Our work will seek to develop understanding of the voltage depression with a goal to produce a primary battery with improved properties that will have significant impact in furthering advancements.

Nagasubramanian, Ganesan

2008-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Calibration Monitoring for Sensor Calibration Interval Extension: Gaps in the Current Science Base  

SciTech Connect

Currently in the United States, periodic sensor recalibration is required for all safety-related sensors, typically occurring at every refueling outage, and it has emerged as a critical path item for shortening outage duration in some plants. International application of calibration monitoring has shown that sensors may operate for longer periods within calibration tolerances. This issue is expected to also be important as the United States looks to the next generation of reactor designs (such as small modular reactors and advanced concepts), given the anticipated longer refueling cycles, proposed advanced sensors, and digital instrumentation and control systems. Online monitoring (OLM) can be employed to identify those sensors that require calibration, allowing for calibration of only those sensors that need it. The U.S. Nuclear Regulatory Commission (NRC) accepted the general concept of OLM for sensor calibration monitoring in 2000, but no U.S. plants have been granted the necessary license amendment to apply it. This paper summarizes a recent state-of-the-art assessment of online calibration monitoring in the nuclear power industry, including sensors, calibration practice, and OLM algorithms. This assessment identifies key research needs and gaps that prohibit integration of the NRC-approved online calibration monitoring system in the U.S. nuclear industry. Several technical needs were identified, including an understanding of the impacts of sensor degradation on measurements for both conventional and emerging sensors; the quantification of uncertainty in online calibration assessment; determination of calibration acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and assessment of the feasibility of using virtual sensor estimates to replace identified faulty sensors in order to extend operation to the next convenient maintenance opportunity.

Coble, Jamie B.; Ramuhalli, Pradeep; Meyer, Ryan M.; Hashemian, Hash; Shumaker, Brent; Cummins, Dara

2012-10-09T23:59:59.000Z

202

Interpolation and Profile Correction (IPC) Method for Shortwave Radiative Transfer in Spectral Intervals of Gaseous Absorption  

Science Conference Proceedings (OSTI)

The new interpolation and profile correction (IPC) method for radiance/flux calculations in gaseous absorption bands is presented. The IPC method is designed to allow an arbitrary spectral resolution including monochromatic mode. It features a ...

Alexei I. Lyapustin

2003-03-01T23:59:59.000Z

203

Improved power source for doubling the exchange time interval of LLC.  

DOE Green Energy (OSTI)

This LDRD project attempts to use novel electrochemical techniques to understand the reaction mechanism that limits the discharge reaction of lithium CF{sub x} chemistry. If this advanced component development and exploratory investigations efforts are successful we will have a High Energy Density Li Primary Battery Technology with the capability to double the run time in the same volume, or provide the same energy in a much smaller volume. These achievements would be a substantial improvement over commercial Li/Thionyl chloride battery technology. The Li(CF{sub x}){sub n} chemistry has the highest theoretical energy (and capacity) and hence very attractive for long life battery applications. However, the practical open circuit voltage (OCV) is only 3.2 V which is {approx}1.3 V lower than the thermodynamic cell voltage (for an in depth explanation of the voltage depression refer to 'Introduction'). The presence of intermediate has been invoked to explain the lower OCV of the cell. Due to the reduction in cell voltage the cell out put is reduced by {approx}40%. To account for the initial voltage loss a mechanism has been proposed which involves the formation of a ternary compound (like C(LiF){sub x}). But neither its presence nor its nature has been confirmed. Our work will seek to develop understanding of the voltage depression with a goal to produce a primary battery with improved properties that will have significant impact in furthering advancements.

Nagasubramanian, Ganesan

2008-12-01T23:59:59.000Z

204

The Econometric Analysis of Interval-valued Data and Adaptive Regression Splines  

E-Print Network (OSTI)

and Number of Trades . . . . ACF and PACF for Number ofand Figure 3.2b, we draw the ACF and PACF for the number ofthe tenth-period lag, and ACF decays to zero gradually. The

Lin, Wei

2013-01-01T23:59:59.000Z

205

Fluctuation studies in the infinite interval matrix representations of operator products and their decompositions  

SciTech Connect

In this work a study on finite dimensional matrix approximations to products of quantum mechanical operators is conducted. It is emphasized that the matrix representation of the product of two operators is equal to the product of the matrix representation of each of the operators when all the fluctuation terms are ignored. The calculation of the elements of the matrices corresponding to the matrix representation of various operators, based on three terms recursive relation is defined. Finally it is shown that the approximation quality depends on the choice of higher values of n, namely the dimension of Hilbert space.

Baykara, N. A.; Guervit, Ercan; Demiralp, Metin [Marmara University, Department of Mathematics, Goeztepe, 34722, Istanbul (Turkey); Istanbul Technical University, Informatics Institute, Maslak, 34469, Istanbul (Turkey)

2012-12-10T23:59:59.000Z

206

Time, speed and perception : intervals in the representation of architectural space  

E-Print Network (OSTI)

Although the notion of "space" in architecture is a relatively contemporary one, this research looks at the difference between the conception and representation of space and the actual material reality. With contemporary ...

Okamoto, Hiroshi, 1968-

2000-01-01T23:59:59.000Z

207

A Review of Sensor Calibration Monitoring for Calibration Interval Extension in Nuclear Power Plants  

SciTech Connect

Currently in the United States, periodic sensor recalibration is required for all safety-related sensors, typically occurring at every refueling outage, and it has emerged as a critical path item for shortening outage duration in some plants. Online monitoring can be employed to identify those sensors that require calibration, allowing for calibration of only those sensors that need it. International application of calibration monitoring, such as at the Sizewell B plant in United Kingdom, has shown that sensors may operate for eight years, or longer, within calibration tolerances. This issue is expected to also be important as the United States looks to the next generation of reactor designs (such as small modular reactors and advanced concepts), given the anticipated longer refueling cycles, proposed advanced sensors, and digital instrumentation and control systems. The U.S. Nuclear Regulatory Commission (NRC) accepted the general concept of online monitoring for sensor calibration monitoring in 2000, but no U.S. plants have been granted the necessary license amendment to apply it. This report presents a state-of-the-art assessment of online calibration monitoring in the nuclear power industry, including sensors, calibration practice, and online monitoring algorithms. This assessment identifies key research needs and gaps that prohibit integration of the NRC-approved online calibration monitoring system in the U.S. nuclear industry. Several needs are identified, including the quantification of uncertainty in online calibration assessment; accurate determination of calibration acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and assessment of the feasibility of using virtual sensor estimates to replace identified faulty sensors in order to extend operation to the next convenient maintenance opportunity. Understanding the degradation of sensors and the impact of this degradation on signals is key to developing technical basis to support acceptance criteria and set point decisions, particularly for advanced sensors which do not yet have a cumulative history of operating performance.

Coble, Jamie B.; Meyer, Ryan M.; Ramuhalli, Pradeep; Bond, Leonard J.; Hashemian, Hash; Shumaker, Brent; Cummins, Dara

2012-08-31T23:59:59.000Z

208

Neutrino signatures and the neutrino-driven wind in Binary Neutron Star Mergers  

E-Print Network (OSTI)

We present VULCAN/2D multi-group flux-limited-diffusion radiation hydrodynamics simulations of binary neutron star (BNS) mergers, using the Shen equation of state, covering ~100 ms, and starting from azimuthal-averaged 2D slices obtained from 3D SPH simulations of Rosswog & Price for 1.4 Msun (baryonic) neutron stars with no initial spins, co-rotating spins, and counter-rotating spins. Snapshots are post-processed at 10 ms intervals with a multi-angle neutrino-transport solver. We find polar-enhanced neutrino luminosities, dominated by $\\bar{\

Luc Dessart; Christian Ott; Adam Burrows; Stefan Rosswog; Eli Livne

2008-06-26T23:59:59.000Z

209

Neutrino signatures and the neutrino-driven wind in Binary Neutron Star Mergers  

E-Print Network (OSTI)

We present VULCAN/2D multi-group flux-limited-diffusion radiation hydrodynamics simulations of binary neutron star (BNS) mergers, using the Shen equation of state, covering ~100 ms, and starting from azimuthal-averaged 2D slices obtained from 3D SPH simulations of Rosswog & Price for 1.4 Msun (baryonic) neutron stars with no initial spins, co-rotating spins, and counter-rotating spins. Snapshots are post-processed at 10 ms intervals with a multi-angle neutrino-transport solver. We find polar-enhanced neutrino luminosities, dominated by $\\bar{\

Dessart, Luc; Burrows, Adam; Rosswog, Stefan; Livne, Eli

2008-01-01T23:59:59.000Z

210

Yakutsk array radio emission registration results in the energy range of 3*10^16-5*10^18 eV  

E-Print Network (OSTI)

This paper presents the set of measurements of ultra-high energy air shower radio emission at frequency 32 MHz in period of 2008-2012. The showers are selected by geomagnetic and azimuth angles and then by the energy in three intervals: 3*10^16 3*10^17 eV, 3*10^17 6*10^17 eV and 6*10^17 5*10^18 eV. In each energy interval average lateral distribution function using mathematically averaged data from antennas with di?fferent directions are plotted. In the paper, using experimental data the dependence of radio signal averaged amplitude from geomagnetic angle, the shower axis distance and the energy are determined. Depth of maximum of cosmic ray showers Xmax for the given energy range is evaluated. The evaluation is made according QGSJET model calculations and average lateral distribution function shape.

Petrov, I; Petrov, Z; Kozlov, V; Pravdin, M

2013-01-01T23:59:59.000Z

211

Plant Application of On-Line Monitoring for Calibration Interval Extension of Safety-Related Instruments: Volume 1 and 2  

Science Conference Proceedings (OSTI)

Temperature, pressure, and other instruments in important applications in nuclear power plants are calibrated periodically to ensure reliable measurements and plant safety. Calibrations are typically performed once every fuel cycle (that is, once every 18 to 24 months). Through calibration activities, substantial labor is devoted to isolating the instruments, calibrating them, and returning them to service. In recent years, reviews of calibration histories of process instruments in nuclear power plants h...

2006-12-22T23:59:59.000Z

212

2011 Special Issue: A just-in-time adaptive classification system based on the intersection of confidence intervals rule  

Science Conference Proceedings (OSTI)

Classification systems meant to operate in nonstationary environments are requested to adapt when the process generating the observed data changes. A straightforward form of adaptation implementing the instance selection approach suggests releasing the ... Keywords: Adaptive classifiers, Change-detection tests

Cesare Alippi; Giacomo Boracchi; Manuel Roveri

2011-10-01T23:59:59.000Z

213

Data processing under a combination of interval and probabilistic uncertainty and its application to earth and environmental studies and engineering  

Science Conference Proceedings (OSTI)

In many areas of science and engineering, we are interested in the value of physical quantities that are difficult (or even impossible) to measure directly. For example, it is very difficult to directly measure the amount of oil in a well or, more generally, ...

Jan Bastian Beck / Vladik Kreinovich

2005-01-01T23:59:59.000Z

214

The Case of Sharp Velocity Transitions in High Vertical Wind Shear When Measuring Doppler Velocities with Narrow Nyquist Intervals  

Science Conference Proceedings (OSTI)

An investigation was launched following unexpected observations of step-function transitions in Doppler velocities from scanning radars in regions of high vertical wind shear. It revealed that, if wind velocity transitions are sufficiently sharp ...

Frédéric Fabry; Clotilde Augros; Aldo Bellon

2013-03-01T23:59:59.000Z

215

Natural and Induced Fracture Diagnostics from 4-D VSP Low Permeability Gas Reservoirs  

SciTech Connect

Tight gas sand reservoirs generally contain thick gas-charged intervals that often have low porosity and very low permeability. Natural and induced fractures provide the only means of production. The objective of this work is to locate and characterize natural and induced fractures from analysis of scattered waves recorded on 4-D (time lapse) VSP data in order to optimize well placement and well spacing in these gas reservoirs. Using model data simulating the scattering of seismic energy from hydraulic fractures, we first show that it is possible to characterize the quality of fracturing based upon the amount of scattering. In addition, the picked arrival times of recorded microseismic events provide the velocity moveout for isolating the scattered energy on the 4-D VSP data. This concept is applied to a field dataset from the Jonah Field in Wyoming to characterize the quality of the induced hydraulic fractures. The time lapse (4D) VSP data from this field are imaged using a migration algorithm that utilizes shot travel time tables derived from the first breaks of the 3D VSPs and receiver travel time tables based on the microseismic arrival times and a regional velocity model. Four azimuthally varying shot tables are derived from picks of the first breaks of over 200 VSP records. We create images of the fracture planes through two of the hydraulically fractured wells in the field. The scattered energy shows correlation with the locations of the microseismic events. In addition, the azimuthal scattering is different from the azimuthal reflectivity of the reservoir, giving us more confidence that we have separated the scattered signal from simple formation reflectivity. Variation of the scattered energy along the image planes suggests variability in the quality of the fractures in three distinct zones.

Mark E. Willis; Daniel R. Burns; M. Nafi Toksoz

2008-09-30T23:59:59.000Z

216

The Coso EGS Project, recent developments (in International collaboration  

Open Energy Info (EERE)

Coso EGS Project, recent developments (in International collaboration Coso EGS Project, recent developments (in International collaboration for geothermal energy in the Americas) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: The Coso EGS Project, recent developments (in International collaboration for geothermal energy in the Americas) Details Activities (3) Areas (1) Regions (0) Abstract: A preliminary fracture/stress analysis was conducted for the recently drilled well 38C-9 as part of a continuing effort to characterize the stress state within the east flank of the Coso geothermal field. Electric Micro Imager (EMI) data were analyzed over the logged interval of 5,881-9,408 ft. Naturally occurring fractures were analyzed in order to determine both fracture dip and azimuth. Most of the fractures dip steeply

217

Modeling topographic influences on solar radiation: A manual for the SOLARFLUX Model  

DOE Green Energy (OSTI)

SOLARFLUX is a geographical information system (GIS) based computer program (running under ARC/INFO and GRID) that models incoming solar radiation based on surface orientation (slope and aspect), solar angle (azimuth and zenith) as it shifts over time, shadows caused by topographic features, and atmospheric conditions. A convenient user interface allows specification of program parameters including latitude, time interval for simulation, file name of a topographic surface, atmospheric conditions (transmittivity), and file names for output. The user specifies a topographic surface as an array of elevation values (GRID). SOLARFLUX generates five basic types of output: 1) total direct radiation, 2) duration of direct sunlight, 3) total diffuse radiation, 4) skyview factor, and 5) hemispherical viewsheds of sky obstruction for specified surface locations. This manual serves as the comprehensive guide to SOLARFLUX. Included are discussions on modeling insolation on complex surfaces, our theoretical approach, program setup and operation, and a set of applications illustrating characteristics of topographic insolation modeling.

Rich, P.M.; Hetrick, W.A.; Saving, S.C. [Univ. of Kansas, Lawrence, KS (United States)

1995-11-01T23:59:59.000Z

218

Elastic photon scattering from sup 4 He in the. Delta. (1232) region  

SciTech Connect

We have measured the differential cross section at laboratory angles 24{degree}, 30{degree}, 45{degree}, and 60{degree} for the reaction {sup 4}He({gamma},{gamma}){sup 4}He at an average lab energy of 320 MeV. This work was performed at the MIT Bates Linear Accelerator using a bremsstrahlung photon beam produced by a 330 MeV electron beam. The scattered photons were detected with a new, high resolution (1.68% FWHM at 330 MeV) NaI(Tl) total absorption scintillation counter. The data were summed over a nine MeV interval below the endpoint of the elastically scattered photon spectrum. Cosmic ray background was rejected by a plastic scintillator veto shield that surrounded the detector and the energy resolution was sufficient to exclude photons from {pi}{sup 0} decay and inelastic scattering from the region of interest. The results were compared with the predictions of the {Delta}-hole calculations of Koch, Moniz, and Ohtsuka and were found to be in excellent agreement. This measurement is the first unambiguous test of the {Delta}-hole formalism for this reaction near the peak of the {Delta} resonance.

Austin, E.J.

1988-01-01T23:59:59.000Z

219

CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR  

E-Print Network (OSTI)

Window Azimuth from Sun so Solar Altitude o Table A40° Solar Azimuth: 90° Window Orientation: 90° west sunsolar altitudes, while fg is determined as follows: where Illumination from the sun (

Bryan, Harvey J.

2013-01-01T23:59:59.000Z

220

CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR  

E-Print Network (OSTI)

orientations and solar where E sun E 8 k y Illumination fromClear Sky Solar Altitude oo Window Azimuth from Sun goo .40° Solar Azimuth: 90° Window Orientation: 90° west of sun

Bryan, Harvey J.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Variational Analysis of Oversampled Dual-Doppler Radial Velocity Data and Application to the Analysis of Tornado Circulations  

Science Conference Proceedings (OSTI)

For the detection of severe weather phenomena such as tornados, mesocyclones, and strong wind shear, the azimuthal resolution of radial velocity measurements is more important. The typical azimuthal resolutions of 1° for the Weather Surveillance ...

Ming Xue; Shun Liu; Tian-You Yu

2007-03-01T23:59:59.000Z

222

Digitally Available Interval-Specific Rock-Sample Data Compiled from Historical Records, Nevada Test Site and Vicinity, Nye County, Nevada  

Science Conference Proceedings (OSTI)

Between 1951 and 1992, underground nuclear weapons testing was conducted at 828 sites on the Nevada Test Site, Nye County, Nevada. Prior to and following these nuclear tests, holes were drilled and mined to collect rock samples. These samples are organized and stored by depth of borehole or drift at the U.S. Geological Survey Core Library and Data Center at Mercury, Nevada, on the Nevada Test Site. From these rock samples, rock properties were analyzed and interpreted and compiled into project files and in published reports that are maintained at the Core Library and at the U.S. Geological Survey office in Henderson, Nevada. These rock-sample data include lithologic descriptions, physical and mechanical properties, and fracture characteristics. Hydraulic properties also were compiled from holes completed in the water table. Rock samples are irreplaceable because pre-test, in-place conditions cannot be recreated and samples cannot be recollected from the many holes destroyed by testing. Documenting these data in a published report will ensure availability for future investigators.

David B. Wood

2009-10-08T23:59:59.000Z

223

Mesoporous Block Copolymer Battery Separators  

E-Print Network (OSTI)

at the Advanced Photon Source (APS). 15 The azimuthallyat the Advanced Photon Source (APS). 15 The azimuthally

Wong, David Tunmin

2012-01-01T23:59:59.000Z

224

ECONOMIC RECOVERY OF OIL TRAPPED AT FAN MARGINS USING HIGH ANGLE WELLS AND MULTIPLE HYDRAULIC FRACTURES  

Science Conference Proceedings (OSTI)

This project attempts to demonstrate the effectiveness of exploiting thin-layered, low-energy deposits at the distal margin of a prograding turbidite complex through the use of hydraulically fractured horizontal or high-angle wells. The combination of a horizontal or high-angle well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional vertical wells while maintaining vertical communication between thin interbedded layers and the wellbore. A high-angle well will be drilled in the fan-margin portion of a slope-basin clastic reservoir and will be completed with multiple hydraulic-fracture treatments. Geologic modeling, reservoir characterization, and fine-grid reservoir simulation will be used to select the well location and orientation. Design parameters for the hydraulic-fracture treatments will be determined, in part, by fracturing an existing test well. Fracture azimuth will be predicted by passive seismic monitoring of a fracture-stimulation treatment in the test well using logging tools in an offset well. The long radius, near horizontal well was drilled during the first quarter of 1996. Well conditions resulted in the 7 in. production liner sticking approximately 900 ft off bottom. Therefore, a 5 in. production liner was necessary to case this portion of the target formation. Swept-out sand intervals and a poor cement bond behind the 5 in. liner precluded two of the three originally planned hydraulic fracture treatments. As a result, all pay intervals behind the 5 in. liner were perforated and stimulated with a non-acid reactive fluid. Following a short production period, the remaining pay intervals in the well (behind the 7 in. liner) were perforated. The well was returned to production to observe production trends and pressure behavior and assess the need to stimulate the new perforations.

Mike L. Laue

2001-09-28T23:59:59.000Z

225

High-resolution x-ray diffraction microscopy of specifically labeled yeast cells  

DOE Data Explorer (OSTI)

This is the fifth of five exposures of the same sample at different tilts. This one is at -30 degrees tilt. Check CXI IDs 4 to 8 for the complete set.

Nelson, Johanna

226

High-resolution x-ray diffraction microscopy of specifically labeled yeast cells  

DOE Data Explorer (OSTI)

This is the third of five exposures of the same sample at different tilts. This one is at +30 degrees tilt. Check CXI IDs 4 to 8 for the complete set.

Nelson, Johanna

227

Building Energy Software Tools Directory: RadOnCol  

NLE Websites -- All DOE Office Websites (Extended Search)

project involving flat plate collectors. Might also be of interest to solar engineers, solar installers. Input Local Latitude, altitude, and azimuth and tilt of collector....

228

Cone Drive Operations Inc | Open Energy Information  

Open Energy Info (EERE)

worm gear technology. The company supplies azimuth and elevation drives for solar tracking applications. References Cone Drive Operations Inc1 LinkedIn Connections CrunchBase...

229

Solar and Moon Position Algorithm (SAMPA)  

This algorithm calculates the solar and lunar zenith and azimuth angles in the period from the year -2000 to 6000, with uncertainties of +/- 0.0003 ...

230

Absorption of axially asymmetric waves in inhomogeneous plasma  

SciTech Connect

It is shown that the periphery of an inhomogeneous plasma is trasparent to axially asymmetric waves with certain azimuthal indices.(AIP)

Dnestrovskii, Y.N.; Kostomarov, D.P.; Pereverzev, G.V.

1976-08-01T23:59:59.000Z

231

S. Crewell  

NLE Websites -- All DOE Office Websites (Extended Search)

Chile, 2009 ARM Science Team Meeting, 10-14 March, Norfolk, VA Reconstruction of humidity field " IWV measured with HATPRO shows similar dependence on azimuth direction as...

232

GEOTECHNICAL INVESTIGATION CHEVRON GULF OF MEXICO GAS HYDRATES...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Azimuthal Density Tools, and crossover) and four (4) drill collars, the Schlumberger JAR, followed by another eight (8) drill collars. For the remaining four (4) soil sampling...

233

The High-Acceptance Dielectron Spectrometer HADES  

E-Print Network (OSTI)

HADES is a versatile magnetic spectrometer aimed at studying dielectron production in pion, proton and heavy-ion induced collisions. Its main features include a ring imaging gas Cherenkov detector for electron-hadron discrimination, a tracking system consisting of a set of 6 superconducting coils producing a toroidal field and drift chambers and a multiplicity and electron trigger array for additional electron-hadron discrimination and event characterization. A two-stage trigger system enhances events containing electrons. The physics program is focused on the investigation of hadron properties in nuclei and in the hot and dense hadronic matter. The detector system is characterized by an 85% azimuthal coverage over a polar angle interval from 18 to 85 degree, a single electron efficiency of 50% and a vector meson mass resolution of 2.5%. Identification of pions, kaons and protons is achieved combining time-of-flight and energy loss measurements over a large momentum range. This paper describes the main features and the performance of the detector system.

The HADES Collaboration; G. Agakishiev; A. Balanda; B. Bannier; R. Bassini; D. Belver; A. V. Belyaev; A. Blanco; M. Boehmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Diaz; F. Dohrmann; A. Dybczak; T. Eberl; W. Enghardt; L. Fabbietti; O. V. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Froehlich; T. Galatyuk; J. A. Garzon; R. Gernhaeuser; A. Gil; C. Gilardi; M. Golubeva; D. Gonzalez-Diaz; F. Guber; M. Heilmann; T. Heinz; T. Hennino; R. Holzmann; A. Ierusalimov; I. Iori; A. Ivashkin; M. Jurkovic; B. Kaempfer; K. Kanaki; T. Karavicheva; D. Kirschner; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; F. Krizek; R. Kruecken; W. Kuehn; A. Kugler; A. Kurepin; S. Lang; J. S. Lange; K. Lapidus; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Markert; V. Metag; B. Michalska; J. Michel; D. Mishra; E. Moriniere; J. Mousa; C. Muentz; L. Naumann; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; T. PerezCavalcanti; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; M. Roy-Stephan; A. Rustamov; A. Sadovsky; B. Sailer; P. Salabura; A. Schmah; E. Schwab; Yu. G. Sobolev; S. Spataro; B. Spruck; H. Stroebele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebac; H. Tsertos; V. Wagner; M. Weber; M. Wisniowski; T. Wojcik; J. Wuestenfel; S. Yurevich; Y. V. Zanevsky; P. Zhou; P. Zumbruch

2009-02-19T23:59:59.000Z

234

Economic recovery of oil trapped at fan margins using high angle wells and multiple hydraulic fractures. Quarterly report, July 1--September 30, 1997  

SciTech Connect

This project attempts to demonstrate the effectiveness of exploiting thin-layered, low-energy deposits at the distal margin of a prograding turbidite complex through the use of hydraulically fractured horizontal or high-angle wells. The combination of a horizontal or high-angle well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional vertical wells while maintaining vertical communication between thin interbedded layers and the wellbore. A high-angle well will be drilled in the fan-margin portion of a slope-basin clastic reservoir and will be completed with multiple hydraulic-fracture treatments. Geologic modeling, reservoir characterization, and fine-grid reservoir simulation will be used to select the well location and orientation. Design parameters for the hydraulic-fracture treatments will be determined, in part, by fracturing an existing test well. Fracture azimuth will be predicted by passive seismic monitoring of a fracture-stimulation treatment in the test well using logging tools in an offset well. The long radius, near horizontal well has been drilled. After pumping a remedial cement squeeze, all pay behind the 5 in. liner was perforated and stimulated. Once wellwork is complete for the existing perforations, a hydraulic fracture treatment will be pumped through a short interval of clustered perforations in the 7 in. liner. Following this frac, all pay behind the 7 in. liner will be perforated and completion operations will be final.

Laue, M.L.

1997-10-30T23:59:59.000Z

235

Low-Resolution STELab IPS 3D Reconstructions of the Whole Heliosphere Interval and Comparison with in-Ecliptic Solar Wind Measurements from STEREO and Wind Instrumentation  

E-Print Network (OSTI)

Keller, C.U. (eds. ) Solar and Space Weather Radiophysics:of the Second Solar Cycle and Space Weather Euroconference,

Bisi, M. M.; Jackson, B. V.; Buffington, A.; Clover, J. M.; Hick, P. P.; Tokumaru, M.

2009-01-01T23:59:59.000Z

236

Experimental investigation of the permeability of Kayenta and St. Peter sandstones to hypersaline brine in the temperature interval 70 to 90/sup 0/C at 10. 3-MPa confining pressure  

DOE Green Energy (OSTI)

Permeabilities of 10.2 cm in length, 2.5 cm in diameter Kayenta (porosity, 20.7, +- 1.66%) and St. Peter (porosity, 13.6, +- 0.13%) sandstones to Magmamax No. 1 brine containing suspended solids were determined from 70 to 90/sup 0/C at 10.3-MPa confining pressure. Measurements were performed without filters, with one 10-..mu..m filter, and with two 10-..mu..m filters inserted upstream of the core sample. In all cases, there was a dramatic decrease in permeability within the first hour of flow or few hundred pore volumes of flow through the core. Experiments conducted without filters or with one filter yield permeabilities that represent both the rock and the 2- to 3-mm amorphous silica-iron layer on the top face of the core. The experimental results show that if the Salton Sea Geothermal Field (SSGF) were composed of porous, sedimentary formations similar to Kayenta sandstone, long-term injection of unmodified Magmamax brine would not be feasible. In the case of acidified brine, most of the permeability decline may result from the mobilization of calcite.

Piwinskii, A.J.; Netherton, R.

1977-12-22T23:59:59.000Z

237

Low-Resolution STELab IPS 3D Reconstructions of the Whole Heliosphere Interval and Comparison with in-Ecliptic Solar Wind Measurements from STEREO and Wind Instrumentation  

E-Print Network (OSTI)

structure of the fast solar wind. J. Geophys. Res. 112,observations of the solar wind. Proc. SPIE 6689, 668911-1.W.A. , Maagoe, S. : 1972, Solar wind velocity from ips

Bisi, M. M.; Jackson, B. V.; Buffington, A.; Clover, J. M.; Hick, P. P.; Tokumaru, M.

2009-01-01T23:59:59.000Z

238

Low-Resolution STELab IPS 3D Reconstructions of the Whole Heliosphere Interval and Comparison with in-Ecliptic Solar Wind Measurements from STEREO and Wind Instrumentation  

E-Print Network (OSTI)

Telescopes and Instrumentation for Solar Astrophysics, Proc.from STEREO and Wind Instrumentation M.M. Bisi · B.V.Ion Composi- tion (PLASTIC) instrumentation (Galvin et al. ,

Bisi, M. M.; Jackson, B. V.; Buffington, A.; Clover, J. M.; Hick, P. P.; Tokumaru, M.

2009-01-01T23:59:59.000Z

239

Effects of egg incubation condition on the post-hatching growth and performance of the snapping turtle, Chelydra serpentina  

SciTech Connect

The effect of incubation temperature on the post-hatching growth and performance capacities of the common snapping turtle, Chelydra serpentina was investigated in the laboratory. Turtle eggs were collected from four sites in New York State and randomly assigned to four incubation temperature treatments to produce males (constant 26{degree}C and downshifted 30-26-30{degree}C) and females (constant 30{degree}C and upshifted 26-30-26{degree}C) under constant and altered temperature regimes. The incubation conditions resulted in 92% males from the constant 26{degree}C group and 93% males from the downshifted group. 100% females resulted from both the constant 30{degree}C group and the upshifted group. Turtles hatching from eggs incubated constantly at 26{degree}C were significantly larger than hatchlings from eggs incubated at a constant 30{degree}C or downshifted. Hatchlings were raised in individual aquaria at 25{degree}C and fed earthworms and fish. After a 9-month growth period, turtles which had been incubated at a constant 30{degree}C gained significantly more mass than did turtles from eggs which had been downshifted or upshifted. There was no extended effect of incubation condition on Post-hatching performance and learning ability as measured by righting and feeding responses. Thus, the mass gain differences seen in this study suggest that physiological differences do result as the consequence of incubation condition. However, these physiological differences are not reflected in normal locomotive or feeding behavior.

Ryan, K.M.

1990-12-01T23:59:59.000Z

240

Effects of egg incubation condition on the post-hatching growth and performance of the snapping turtle, Chelydra serpentina  

SciTech Connect

The effect of incubation temperature on the post-hatching growth and performance capacities of the common snapping turtle, Chelydra serpentina was investigated in the laboratory. Turtle eggs were collected from four sites in New York State and randomly assigned to four incubation temperature treatments to produce males (constant 26[degree]C and downshifted 30-26-30[degree]C) and females (constant 30[degree]C and upshifted 26-30-26[degree]C) under constant and altered temperature regimes. The incubation conditions resulted in 92% males from the constant 26[degree]C group and 93% males from the downshifted group. 100% females resulted from both the constant 30[degree]C group and the upshifted group. Turtles hatching from eggs incubated constantly at 26[degree]C were significantly larger than hatchlings from eggs incubated at a constant 30[degree]C or downshifted. Hatchlings were raised in individual aquaria at 25[degree]C and fed earthworms and fish. After a 9-month growth period, turtles which had been incubated at a constant 30[degree]C gained significantly more mass than did turtles from eggs which had been downshifted or upshifted. There was no extended effect of incubation condition on Post-hatching performance and learning ability as measured by righting and feeding responses. Thus, the mass gain differences seen in this study suggest that physiological differences do result as the consequence of incubation condition. However, these physiological differences are not reflected in normal locomotive or feeding behavior.

Ryan, K.M.

1990-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

ROUGHNESS LENGTHS FOR THE SAVANNAH RIVER SITE  

SciTech Connect

Surface roughness values for the areas surrounding the H, D and N-Area meteorological towers were computed from archived 2010 meteorological data. These 15-minute-averaged data were measured with cup anemometers and bidirectional wind vanes (bivanes) 61 m above the surface. The results of the roughness calculation using the standard deviation of elevation angle {sigma}{sub E}, and applying the simple formula based on tree canopy height, gave consistent estimates for roughness around the H-Area tower in the range of 1.76 to 1.86 m (95% confidence interval) with a mean value of 1.81 m. Application of the {sigma}{sub E} method for the 61-m level at D and N-Areas gave mean values of 1.71 and 1.81 with confidence ranges of 1.62-1.81 and 1.73-1.88 meters, respectively. Roughness results are azimuth dependent, and thus are presented as averages over compass sectors spanning 22.5 degrees. Calculated values were compared to other methods of determining roughness, including the standard deviation of the azimuth direction, {sigma}{sub A}, and standard deviation of the wind speed, {sigma}{sub U}. Additional data was obtained from a sonic anemometer at 61-m on the H-Area tower during a period of a few weeks in 2010. Results from the sonic anemometer support our use of {sigma}{sub E} to calculate roughness. Based on the H-Area tower results, a surface roughness of 1.8 m using is recommended for use in dispersion modeling applications that consider the impacts of a contaminant release to individuals along the Site boundary. The canopy surrounding the H-Area tower is relatively uniform (i.e., little variance in roughness by upwind direction), and data supplied by the U.S. Forest Service at Savannah River show that the canopy height and composition surrounding the H-Area tower is reasonably representative of forested areas throughout the SRS reservation. For dispersion modeling analyses requiring assessments of a co-located worker within the respective operations area, recommended area-specific values range from 0.3 m for E Area to 0.7 m for A Area at the Savannah River National Laboratory. These area-specific values, summarized in Table 4-1, were determined using the Environmental Protection Agency's AERSURFACE computer algorithm.

Hunter, C.

2012-03-28T23:59:59.000Z

242

An Adaptive Dealiasing Method Based on Variational Analysis for Radar Radial Velocities Scanned with Small Nyquist Velocities  

Science Conference Proceedings (OSTI)

Previous velocity–azimuth display (VAD)-based methods of dealiasing folded radial velocities have relied heavily on the VAD uniform-wind assumption and, thus, can fail when the uniform-wind assumption becomes poor around azimuthal circles in a ...

Qin Xu; Kang Nai

2012-12-01T23:59:59.000Z

243

An Automated Method for Depicting Mesocyclone Paths and Intensities  

Science Conference Proceedings (OSTI)

The location and intensity of mesocyclone circulations can be tracked in real time by accumulating azimuthal shear values over time at every location of a uniform spatial grid. Azimuthal shear at low (0–3 km AGL) and midlevels (3–6 km AGL) of the ...

Madison L. Miller; Valliappa Lakshmanan; Travis M. Smith

2013-06-01T23:59:59.000Z

244

Low-temperature geothermal resource and stratigraphy of portions of Yakima County, Washington  

DOE Green Energy (OSTI)

The low-temperature geothermal resource of portions of Yakima County, south-central Washington, is defined by several least squares linear regression analyses of bottom-hole temperature and depth data. Bottom-hole temperature and depth data were separated into fourteen well data groups based on geographic proximity, land slope azimuth, and position within the regional ground-water flow system. The depths of these wells range from over 50m to almost 600m. The regression analyses of these well data groups indicate that the projected land-surface temperature and geothermal gradient range from 10.6 to 14.0/sup 0/C and from 24.9 to 52.2/sup 0/C/km, respectively. Stratigraphic correlation diagrams developed from borehole geophysical and lithologic logs are given for localities within the lower Yakima, Black Rock, Moxee, Ahtanum, Cowiche, and Naches valleys. These correlation diagrams are combined with their respective borehole temperature logs and well data group predicted temperature curves to assess the validity of the regression analyses and to determine aquifer locations, temperatures, and directions of intra-borehole flow. A regression analysis of data from wells of south-central Washington with bottom-hole depths of over 700m to almost 3km suggests that the projected land-surface temperature and geothermal gradient of this depth interval are 21.8/sup 0/C and 31.3/sup 0/C/km, respectively. The depth to the 100/sup 0/C isotherm is approximately 2513m.

Biggane, J.

1982-07-30T23:59:59.000Z

245

HERO Mission Summary Report Authors of Report: Shannon McElhinney, Michael Bell, Wen-Chau Lee, Xiaomin Chen  

E-Print Network (OSTI)

and dry cool weather set in on the islands. The winds had calmed down from Monday and Tuesday and not much weather was expected. 2 General Description of Mission Since it was the last day of HERO it was deployed at 30 degrees by the Ko'olaus. This cloud was captured with time series data. A solar scan in clear

246

PROCEEDINGS, Thirty-Fifth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 1-3, 2010  

E-Print Network (OSTI)

to whirling of the bit. Bit whirl resulted in off rotation axis motion and cutters engaging the formation the cutter at angles of up to 30 degrees off-axis. Since the impact strength held steady up to 17 degrees shear PDC cutters. Stinger PDC's were also impact tested against round top inserts such as are commonly

Stanford University

247

EFFECT OF MECHANICAL CONDITIONING ON THIN-LAYER DRYING OF ENERGY SORGHUM (Sorghum bicolor (L.) Moench)  

SciTech Connect

Cellulosic energy varieties of Sorghum bicolor (L.) Moench show promise as a bioenergy feedstock, however, high moisture content at the time of harvest results in unacceptable levels of degradation when stored in aerobic conditions. To safely store sorghum biomass for extended periods in baled format, the material must be dried to inhibit microbial growth. One possible solution is allowing the material to dry under natural in-field conditions. This study examines the differences in thin-layer drying rates of intact and conditioned sorghum under laboratory-controlled temperatures and relative humidity levels (20 degrees C and 30 degrees C from 40% to 85% relative humidity), and models experimental data using the Page’s Modified equation. The results demonstrate that conditioning drastically accelerates drying times. Relative humidity had a large impact on the time required to reach a safe storage moisture content for intact material (approximately 200 hours at 30 degrees C and 40% relative humidity and 400 hours at 30 degrees C and 70% relative humidity), but little to no impact on the thin-layer drying times of conditioned material (approximately 50 hours for all humidity levels < 70% at 30 degrees C). The drying equation parameters were influenced by temperature, relative humidity, initial moisture content, and material damage, allowing drying curves to be empirically predicted. The results of this study provide valuable information applicable to the agricultural community and to future research on drying simulation and management of energy sorghum.

Ian J. Bonner; Kevin L. Kenney

2012-10-01T23:59:59.000Z

248

Agency datasets monthly list | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Equivalent Grade, Salary Level (10,000 interval), Work Schedule, Type of Appointment, Gender, Age (5 year interval), Length of Service (5 year interval), Employment, Average...

249

ARM - Datastreams - swacrblrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsswacrblrhi Datastreamsswacrblrhi Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : SWACRBLRHI S-WACR Boundary-layer Range-Height Indicator scan Active Dates 2010.04.28 - 2010.05.31 Measurement Categories Cloud Properties Originating Instrument W-Band (95 GHz) ARM Cloud Radar, mounted to scan (SWACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Current pedestal azimuth position relative to North degrees Azimuth_current ( time ) Rate of pedestal motion in the azimuth degrees/sec Azimuth_scan_rate ( time ) Current pedestal elevation position degrees Elevation_current ( time )

250

ARM - Datastreams - swacrcal  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsswacrcal Datastreamsswacrcal Documentation Data Quality Plots Citation DOI: 10.5439/1025288 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : SWACRCAL S-WACR calibration information Active Dates 2010.03.15 - 2010.04.23 Measurement Categories Cloud Properties Originating Instrument W-Band (95 GHz) ARM Cloud Radar, mounted to scan (SWACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Current pedestal azimuth position relative to North degrees Azimuth_current ( time ) Rate of pedestal motion in the azimuth degrees/sec Azimuth_scan_rate ( time ) Current pedestal elevation position degrees Elevation_current ( time )

251

ARM - Datastreams - swacrcwrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsswacrcwrhi Datastreamsswacrcwrhi Documentation Data Quality Plots Citation DOI: 10.5439/1025289 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : SWACRCWRHI S-WACR Cross-Wind Range-Height Indicator scan Active Dates 2009.10.26 - 2010.05.31 Measurement Categories Cloud Properties Originating Instrument W-Band (95 GHz) ARM Cloud Radar, mounted to scan (SWACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Current pedestal azimuth position relative to North degrees Azimuth_current ( time ) Rate of pedestal motion in the azimuth degrees/sec Azimuth_scan_rate ( time )

252

ARM - Datastreams - swacrppi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsswacrppi Datastreamsswacrppi Documentation Data Quality Plots Citation DOI: 10.5439/1025292 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : SWACRPPI S-WACR Plan Position Indicator scan Active Dates 2009.10.05 - 2011.04.25 Measurement Categories Cloud Properties Originating Instrument W-Band (95 GHz) ARM Cloud Radar, mounted to scan (SWACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Current pedestal azimuth position relative to North degrees Azimuth_current ( time ) Rate of pedestal motion in the azimuth degrees/sec Azimuth_scan_rate ( time ) Current pedestal elevation position degrees Elevation_current ( time )

253

ARM - Datastreams - swacrvpt  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsswacrvpt Datastreamsswacrvpt Documentation Data Quality Plots Citation DOI: 10.5439/1025297 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : SWACRVPT S-WACR Vertical PoinTing scan Active Dates 2009.10.05 - 2011.04.25 Measurement Categories Cloud Properties Originating Instrument W-Band (95 GHz) ARM Cloud Radar, mounted to scan (SWACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Current pedestal azimuth position relative to North degrees Azimuth_current ( time ) Rate of pedestal motion in the azimuth degrees/sec Azimuth_scan_rate ( time ) Current pedestal elevation position degrees Elevation_current ( time )

254

A VAD-Based Dealiasing Method for Radar Velocity Data Quality Control  

Science Conference Proceedings (OSTI)

This paper describes a new velocity–azimuth display (VAD)-based dealiasing method developed for automated radar radial velocity data quality control to satisfy the high-quality standard and efficiency required by operational radar data ...

Qin Xu; Kang Nai; Li Wei; Pengfei Zhang; Shun Liu; David Parrish

2011-01-01T23:59:59.000Z

255

Seismic Mapping Of The Subsurface Structure At The Ryepatch Geothermal...  

Open Energy Info (EERE)

the waves generated by all surface sources. The subject of this report is use this data set to determine the subsurface structure as a function of azimuth. A total or 2005 first...

256

Assimilation of NEXRAD-VAD Winds in Summertime Meteorological Simulations over the Northeastern United States  

Science Conference Proceedings (OSTI)

Next-Generation Radar (NEXRAD) velocity azimuth display (VAD) winds were available at 10 sites in the northeastern United States during intensive observing periods of the North American Research Strategy on Tropospheric Ozone-Northeast field ...

Sara A. Michelson; Nelson L. Seaman

2000-03-01T23:59:59.000Z

257

External Influences on Hurricane Intensity. Part II: Vertical Structure and Response of the Hurricane Vortex  

Science Conference Proceedings (OSTI)

The vertical structure of the interaction of Hurricane Elena (1985) with a baroclinic wave was evaluated using analyses from the European Centre for Medium Range Weather Forecasting. During the period of interaction, azimuthal eddies produced a ...

John Molinari; David Vollaro

1990-08-01T23:59:59.000Z

258

The Effects of Vertical Wind Shear on the Distribution of Convection in Tropical Cyclones  

Science Conference Proceedings (OSTI)

The influence of vertical wind shear on the azimuthal distribution of cloud-to-ground lightning in tropical cyclones was examined using flash locations from the National Lightning Detection Network. The study covers 35 Atlantic basin tropical ...

Kristen L. Corbosiero; John Molinari

2002-08-01T23:59:59.000Z

259

Kinematic Properties of Wave Amplitude Vacillation in a Thermally Driven Rotating Fluid  

Science Conference Proceedings (OSTI)

Empirical evidence is presented to the effect that amplitude vacillation in a thermally driven rotating annulus of fluid is due primarily to the interference of two modes with the same azimuthal wavenumber and different vertical structures and ...

George Buzyna; Richard L. Pfeffer; Robin Kung

1989-09-01T23:59:59.000Z

260

Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center  

E-Print Network (OSTI)

the calculation of solar time and sun angle (denotes degreesdirect sun, which can lead to increased solar gain anda polar sun-path diagram in which the solar azimuth is

Zelenay, Krystyna

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Estimating solar irradiance using a geostationary satellite  

E-Print Network (OSTI)

altitude, solar zenith/azimuth, earth -sun radius into RAM1.1.1 Solar Spectrum and the Atmosphere The sun‘s radiationthe solar position and satellite position the sun-satellite

Urquhart, Bryan Glenn

2011-01-01T23:59:59.000Z

262

Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at [? over s[subscript NN  

E-Print Network (OSTI)

We present two-dimensional (2D) two-particle angular correlations measured with the STAR detector on relative pseudorapidity ? and azimuth ? for charged particles from Au-Au collisions at [? over s[subscript NN

Balewski, Jan T.

263

nonaccelrpp.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

altitude-azimuth mounts. A camera, made from an array of up to 1000 photomultiplier tubes (PMTs) covering a field-of-view of up to 5.0 in diameter, is placed at the...

264

Horizontal Divergence and Vertical Velocity Retrievals from Doppler Radar and Wind Profiler Observations  

Science Conference Proceedings (OSTI)

Vertical motion profiles can be diagnosed with the mass continuity equation using horizontal divergence fields derived from various single-Doppler radar techniques such as EVAD (extended velocity-azimuth display), CEVAD (concurrent extended ...

Robert Cifelli; Steven A. Rutledge; Dennis J. Boccippio; Thomas Matejka

1996-10-01T23:59:59.000Z

265

Quality Control and Verification of Weather Radar Wind Profiles  

Science Conference Proceedings (OSTI)

Weather radar wind profiles (WRWPs) have been retrieved from Doppler volume scans using different implementations of the velocity–azimuth display (VAD) and volume velocity processing (VVP) methods. An extensive quality control of the radial ...

Iwan Holleman

2005-10-01T23:59:59.000Z

266

Rapidly Intensifying Hurricane Guillermo (1997). Part I: Low-Wavenumber Structure and Evolution  

Science Conference Proceedings (OSTI)

The structure and evolution of rapidly intensifying Hurricane Guillermo (1997) is examined using airborne Doppler radar observations. In this first part, the low-azimuthal-wavenumber component of the vortex is presented. Guillermo’s ...

Paul D. Reasor; Matthew D. Eastin; John F. Gamache

2009-02-01T23:59:59.000Z

267

A Comparison of VHF Radar Vertical-Velocity Measurements by a Direct Vertical-Beam Method and by a VAD Technique  

Science Conference Proceedings (OSTI)

Vertical-velocity measurements made by a direct vertical-beam method are compared to vertical velocities derived from VAD (velocity-azimuth display) measurements over a 27-h period. The results indicate that the two types of measurements in ...

M. F. Larsen; S. Fukao; O. Aruga; M. D. Yamanaka; T. Tsuda; S. Kato

1991-12-01T23:59:59.000Z

268

Lidar-Based Characterization of the Geometry and Structure of Water Clouds  

Science Conference Proceedings (OSTI)

Lidar remote sensing measurements of low-level water clouds in the form of vertical soundings and instantaneous (1 min) azimuth-over-elevation scans are reported. Retrievals are made of the liquid water content and effective droplet diameter at ...

Luc R. Bissonnette; Gilles Roy; Grégoire Tremblay

2007-08-01T23:59:59.000Z

269

Current-driven instability of magnetic jets  

E-Print Network (OSTI)

MHD instabilities can be responsible for the complex morphology of astrophysical jets. We consider the stability properties of jets containing both the azimuthal and axial field of subthermal strength. The presence of the magnetic field with complex topology in jets is suggested by theoretical models and it is consistent with recent observations. Stability is discussed by means of a linear analysis of the ideal MHD equations.We argue that, in the presence of azimuthal and axial magnetic fields, the jet is always unstable to non-axisymmetric perturbations. Stabilization does not occur even if the strengths of these field components are comparable. If the axial field is weaker than the azimuthal one, instability occurs for perturbations with any azimuthal wave number $m$, and the growth rate reach a saturation value for small values of $m$. If the axial field is stronger than the toroidal one, the instability shows off for perturbations with relatively large $m$.

Bonanno, Alfio

2010-01-01T23:59:59.000Z

270

Low-Frequency Oscillations in a Rotating Annulus with Topography  

Science Conference Proceedings (OSTI)

Experiments were performed in a rotating, differentially heated annulus, with and without bottom topography of azimuthal wavenumber 2. Both water and a viscous glycerol-water mixture were used as a working fluid. In one series of experiments, ...

P. Bernardet; A. Butet; M. Déqué; M. Ghil; R. L. Pfeffer

1990-12-01T23:59:59.000Z

271

Contrails of Small and Very Large Optical Depth  

Science Conference Proceedings (OSTI)

This work deals with two kinds of contrails. The first comprises a large number of optically thin contrails near the tropopause. They are mapped geographically using a lidar to obtain their height and a camera to obtain azimuth and elevation. ...

David Atlas; Zhien Wang

2010-09-01T23:59:59.000Z

272

Ferrofluid spin-up flows from uniform and non-uniform rotating magnetic fields  

E-Print Network (OSTI)

When ferrofluid in a cylindrical container is subjected to a rotating azimuthally directed magnetic field, the fluid "spins up" into an almost rigid-body rotation where ferrofluid nanoparticles have both a linear and an ...

Khushrushahi, Shahriar Rohinton

2010-01-01T23:59:59.000Z

273

Relative Short-Range Forecast Impact from Aircraft, Profiler, Radiosonde, VAD, GPS-PW, METAR, and Mesonet Observations via the RUC Hourly Assimilation Cycle  

Science Conference Proceedings (OSTI)

An assessment is presented on the relative forecast impact on the performance of a numerical weather prediction model from eight different observation data types: aircraft, profiler, radiosonde, velocity azimuth display (VAD), GPS-derived ...

Stanley G. Benjamin; Brian D. Jamison; William R. Moninger; Susan R. Sahm; Barry E. Schwartz; Thomas W. Schlatter

2010-04-01T23:59:59.000Z

274

Tropical Cyclone Intensification from Asymmetric Convection: Energetics and Efficiency  

Science Conference Proceedings (OSTI)

Prior studies of the linear response to asymmetric heating of a balanced vortex showed that the resulting intensity change could be very closely approximated by computing the purely symmetric response to the azimuthally averaged heating. The ...

David S. Nolan; Yumin Moon; Daniel P. Stern

2007-10-01T23:59:59.000Z

275

Three-fold diffraction symmetry in epitaxial graphene and the SiC substrate  

E-Print Network (OSTI)

Epitaxial Graphene and the SiC Substrate D.A. Siegel, 1, 2in graphene ?lms on 6H-SiC(0001) have been studied by lowgrown on the C face of SiC (which possesses azimuthal

Siegel, D A

2010-01-01T23:59:59.000Z

276

Bird Migration and Bias of WSR-88D Wind Estimates  

Science Conference Proceedings (OSTI)

Migrating birds can greatly influence base velocity, velocity azimuth display (VAD), and VAD wind profile products of the WSR-88D. This is documented by comparing estimates of wind velocity and direction from these products with corresponding ...

Sidney A. Gauthreaux Jr.; David S. Mizrahi; Carroll G. Belser

1998-06-01T23:59:59.000Z

277

Wind Profiles in Tropical Cyclone Stratiform Rainbands over Land  

Science Conference Proceedings (OSTI)

Observations of 14 stratiform periods in outer tropical cyclone rainbands are used to evaluate wind structure using a velocity–azimuth display (VAD) technique applied to KAMX (Miami) Weather Surveillance Radar-1988 Doppler (WSR-88D) data. These 14 ...

Shaunna L. Donaher; Bruce A. Albrecht; Ming Fang; William Brown

2013-11-01T23:59:59.000Z

278

Non-uniform emission studies of a magnetron injection gun  

E-Print Network (OSTI)

This thesis investigates the experimental measurement and theoretical simulation of the effects of azimuthal emission non-uniformity of a 96 kV, 40 amp magnetron injection gun (MIG) used in a gyrotron. The accomplishments ...

Marchewka, Chad D. (Chad Daniel)

2006-01-01T23:59:59.000Z

279

Tornado Detection Using a Neuro–Fuzzy System to Integrate Shear and Spectral Signatures  

Science Conference Proceedings (OSTI)

Tornado vortices observed from Doppler radars are often associated with strong azimuthal shear and Doppler spectra that are wide and flattened. The current operational tornado detection algorithm (TDA) primarily searches for shear signatures that ...

Yadong Wang; Tian-You Yu; Mark Yeary; Alan Shapiro; Shamim Nemati; Michael Foster; David L. Andra Jr.; Michael Jain

2008-07-01T23:59:59.000Z

280

Objective Estimation of Tropical Cyclone Wind Structure from Infrared Satellite Data  

Science Conference Proceedings (OSTI)

Geostationary infrared (IR) satellite data are used to provide estimates of the symmetric and total low-level wind fields in tropical cyclones, constructed from estimations of an azimuthally averaged radius of maximum wind (RMAX), a symmetric ...

Kimberly J. Mueller; Mark DeMaria; John Knaff; James P. Kossin; Thomas H. Vonder Haar

2006-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Determining Weather Radar Antenna Pointing Using Signals Detected from the Sun at Low Antenna Elevations  

Science Conference Proceedings (OSTI)

A method to determine the elevation and azimuth biases of the radar antenna using solar signals observed by a scanning radar is presented. Data recorded at low elevation angles where the atmospheric refraction has a significant effect on the ...

Asko Huuskonen; Iwan Holleman

2007-03-01T23:59:59.000Z

282

Comparison of Results from a Meandering-Plume Model with Measured Atmospheric Tracer Concentration Fluctuations  

Science Conference Proceedings (OSTI)

Measured wind-azimuth data are used in a simple meandering-plume model to predict observed SF6 concentration fluctuations measured downwind of a point source during a range of stability conditions. The meander component of plume diffusion is ...

Holly Peterson; Brian Lamb

1992-06-01T23:59:59.000Z

283

Effects of Radar Sampling on Single-Doppler Velocity Signatures of Mesocyclones and Tornadoes  

Science Conference Proceedings (OSTI)

Simulated WSR-88D (Weather Surveillance Radar-1988 Doppler) radar data were used to investigate the effects of discrete azimuthal sampling on Doppler velocity signatures of modeled mesocyclones and tornadoes at various ranges from the radar and ...

Vincent T. Wood; Rodger A. Brown

1997-12-01T23:59:59.000Z

284

Solar Position Algorithm (SPA) - Energy Innovation Portal  

This algorithm calculates the solar zenith and azimuth angles in the period from the year -2000 to 6000, with uncertainties of +/- 0.0003 degrees based on the date ...

285

Angular Distributions of Downward Longwave Radiance and Their Meteorological Applications  

Science Conference Proceedings (OSTI)

Measured thermal radiances (? > 3 ?m) from clear and cloudy skies are averaged over azimuth angles to obtain average sky radiances at various zenith angles. The observed variation of sky emissivity with zenith angle can be explained through the ...

Charles A. Coombes; Anthony W. Harrison

1986-08-01T23:59:59.000Z

286

High-Frequency Radars: Beamforming Calibrations Using Ships as Reflectors  

Science Conference Proceedings (OSTI)

Linear array antennas and beamforming techniques offer some advantages compared to direction finding using squared arrays. The azimuthal resolution depends on the number of antenna elements and their spacing. Assuming an ideal beam pattern and no ...

X. Flores-Vidal; P. Flament; R. Durazo; C. Chavanne; K.-W. Gurgel

2013-03-01T23:59:59.000Z

287

Recreating the Strength of Diamonds  

E-Print Network (OSTI)

momentum, inductance L "Low torque" state LL "Lower than low" torque state lb. Pounds LED Light emitting diode m Meters m Azimuthal wavenumber, spherical harmonic order xv #12;MHz Megahertz MOSFET Metal oxide

288

Effects of Vertical Wind Shear and Storm Motion on Tropical Cyclone Rainfall Asymmetries Deduced from TRMM  

Science Conference Proceedings (OSTI)

Vertical wind shear and storm motion are two of the most important factors contributing to rainfall asymmetries in tropical cyclones (TCs). Global TC rainfall structure, in terms of azimuthal distribution and asymmetries relative to storm motion, ...

Shuyi S. Chen; John A. Knaff; Frank D. Marks Jr.

2006-11-01T23:59:59.000Z

289

Three-dimensional numerical investigation of electron transport with rotating spoke in a cylindrical anode layer Hall plasma accelerator  

Science Conference Proceedings (OSTI)

The effects of increased magnetic field and pressure on electron transport with a rotating spoke in a cylindrical anode layer Hall plasma accelerator are investigated by three-dimensional particle-in-cell numerical simulation. The azimuthal rotation of electron transport with the spoke has a frequency of 12.5 MHz. It propagates in the direction of the E Multiplication-Sign B drift at a speed of {approx}1.0 Multiplication-Sign 10{sup 6} m/s (about 37% of the E Multiplication-Sign B drift speed). Local charge separation occurs because the azimuthal local electron density concentration is accompanied by an almost uniform azimuthal ion distribution. The non-axisymmetrical electron density concentration and axisymmetrical ion distribution introduce two azimuthal electric fields with opposite directions in the plasma discharge region. The axial electron shear flow is excited under the additional E{sub {theta}} Multiplication-Sign B field. The anomalous electron transport with the rotating spoke may be attributed to the axial electron shear flow induced by the two azimuthal electric fields with opposite directions as a result of the azimuthal local electron density concentration.

Tang, D. L.; Geng, S. F.; Qiu, X. M. [Southwestern Institute of Physics, Chengdu 610041 (China); Chu, Paul K. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong)

2012-07-15T23:59:59.000Z

290

Response to 'Comment on 'Three-dimensional numerical investigation of electron transport with rotating spoke in a cylindrical anode layer Hall plasma accelerator''[Phys. Plasmas 20, 014701 (2013)  

SciTech Connect

The numerical simulation described in our paper [D. L. Tang et al., Phys. Plasmas 19, 073519 (2012)] shows a rotating dense plasma structure, which is the critical characteristic of the rotating spoke. The simulated rotating spoke has a frequency of 12.5 MHz with a rotational speed of {approx}1.0 Multiplication-Sign 10{sup 6} m/s on the surface of the anode. Accompanied by the almost uniform azimuthal ion distribution, the non-axisymmetric electron distribution introduces two azimuthal electric fields with opposite directions. The azimuthal electric fields have the same rotational frequency and speed together with the rotating spoke. The azimuthal electric fields excite the axial electron drift upstream and downstream due to the additional E{sub {theta}} x B field and then the axial shear flow is generated. The axial local charge separation induced by the axial shear electron flow may be compensated by the azimuthal electron transport, finally resulting in the azimuthal electric field rotation and electron transport with the rotating spoke.

Tang, D. L.; Qiu, X. M. [Southwestern Institute of Physics, Chengdu 610041 (China); Geng, S. F. [Southwestern Institute of Physics, Chengdu 610041 (China); Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong); Chu, Paul K. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong)

2013-01-15T23:59:59.000Z

291

Current bombardment of the Earth-Moon system: Emphasis on cratering asymmetries  

E-Print Network (OSTI)

We calculate the current spatial distribution of projectile delivery to the Earth and Moon using numerical orbital dynamics simulations of candidate impactors drawn from a debiased Near-Earth-Object (NEO) model. Surprisingly, we find that the average lunar impact velocity is 20 km/s, which has ramifications for converting observed crater densities to impactor size distributions. We determine that current crater production on the leading hemisphere of the Moon is 1.29 +/- 0.01 that of the trailing when considering the ratio of craters within 30 degrees of the apex to those within 30 degrees of the antapex and that there is virtually no nearside-farside asymmetry. As expected, the degree of leading-trailing asymmetry increases when the Moon's orbital distance is decreased. We examine the latitude distribution of impactor sites and find that for both the Earth and Moon there is a small deficiency of time-averaged impact rates at the poles. The ratio between deliveries within 30 degrees of the pole to that of a 30 degree band centered on the equator is nearly unity for Earth (<1%)(0.992 +/- 0.001) but detectably non-uniform for the Moon (~10%)(0.912 +/- 0.004). The terrestrial arrival results are examined to determine the degree of AM/PM asymmetry to compare with meteorite fall times (of which there seems to be a PM excess). Our results show that the impact flux of objects derived from the NEOs in the AM hours is ~2 times that of the PM hemisphere, further supporting the assertion that meteorite-dropping objects are recent ejections from the main asteroid belt rather than young fragments of NEOs.

J. Gallant; B. Gladman; M. Cuk

2006-08-17T23:59:59.000Z

292

Process for reducing organic compounds with calcium, amine, and alcohol  

DOE Patents (OSTI)

Olefins are produced by contacting an organic compound having at least one benzene ring with calcium metal, ethylenediamine, a low molecular weight aliphatic alcohol, and optionally a low molecular weight aliphatic primary amine, and/or an inert, abrasive particulate substance. The reduction is conducted at temperatures ranging from about -10.degree. C. to about 30.degree. C. or somewhat higher. Substantially all of the organic compounds are converted to corresponding cyclic olefins, primarily diolefins.

Benkeser, Robert A. (West Lafayette, IN); Laugal, James A. (Lostant, IL); Rappa, Angela (Baltimore, MD)

1985-01-01T23:59:59.000Z

293

Formation of manganese {delta}-doped atomic layer in wurtzite GaN  

Science Conference Proceedings (OSTI)

We describe the formation of a {delta}-doped manganese layer embedded within c-plane wurtzite gallium nitride using a special molecular beam epitaxy growth process. Manganese is first deposited on the gallium-poor GaN (0001) surface, forming a {radical}(3) Multiplication-Sign {radical}(3)-R30 Degree-Sign reconstructed phase. This well-defined surface reconstruction is then nitrided using plasma nitridation, and gallium nitride is overgrown. The manganese content of the {radical}(3) Multiplication-Sign {radical}(3)-R30 Degree-Sign phase, namely one Mn per each {radical}(3) Multiplication-Sign {radical}(3)-R30 Degree-Sign unit cell, implies that the MnGaN alloy layer has a Mn concentration of up to 33%. The structure and chemical content of the surface are monitored beginning from the initial growth stage up through the overgrowth of 20 additional monolayers (MLs) of GaN. An exponential-like drop-off of the Mn signal with increasing GaN monolayers, as measured by Auger electron spectroscopy, indicates that the highly concentrated Mn layer remains at the {delta}-doped interface. A model of the resultant {delta}-doped structure is formulated based on the experimental data, and implications for possible spintronic applications are discussed.

Shi Meng; Chinchore, Abhijit; Wang Kangkang; Mandru, Andrada-Oana; Liu Yinghao; Smith, Arthur R. [Department of Physics and Astronomy, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701 (United States)

2012-09-01T23:59:59.000Z

294

Biological conversion of synthesis gas  

DOE Green Energy (OSTI)

Mass transfer and kinetic studies were carried out for the Rhodospirillum rubrum and Chlorobium thiosulfatophilum bacterial systems. R. rubrum is a photosynthetic anaerobic bacterium which catalyzes the biological water gas shift reaction: CO + H[sub 2]0 [yields] CO[sub 2] + H[sub 2]. C. thiosulfatophilum is also a H[sub 2]S and COS to elemental sulfur. The growth of R. rubrum may be satisfactorily carried out at 25[degree] and 30[degree]C, while CO uptake and thus the conversion of CO best occurs at temperatures of either 30[degree], 32[degree] or 34[degree]C. The rate of conversion of COs and H[sub 2]O to CO[sub 2] and H[sub 2]S may be modeled by a first order rate expression. The rate constant at 30[degree]C was found to be 0.243 h[sup [minus]1]. The growth of C. thiosulfatophilum may be modeled in terms of incoming light intensity using a Monod equation: [mu] = [sub 351] + I[sub o]/[sup 0.152]I[sub o]. Comparisons of the growth of R. rubrum and C. thiosulfatophilum shows that the specific growth rate of C. thiosulfatophilum is much higher at a given light intensity.

Klasson, K.T.; Basu, R.; Johnson, E.R.; Clausen, E.C.; Gaddy, J.L.

1992-03-01T23:59:59.000Z

295

Biological conversion of synthesis gas. Mass transfer/kinetic studies  

DOE Green Energy (OSTI)

Mass transfer and kinetic studies were carried out for the Rhodospirillum rubrum and Chlorobium thiosulfatophilum bacterial systems. R. rubrum is a photosynthetic anaerobic bacterium which catalyzes the biological water gas shift reaction: CO + H{sub 2}0 {yields} CO{sub 2} + H{sub 2}. C. thiosulfatophilum is also a H{sub 2}S and COS to elemental sulfur. The growth of R. rubrum may be satisfactorily carried out at 25{degree} and 30{degree}C, while CO uptake and thus the conversion of CO best occurs at temperatures of either 30{degree}, 32{degree} or 34{degree}C. The rate of conversion of COs and H{sub 2}O to CO{sub 2} and H{sub 2}S may be modeled by a first order rate expression. The rate constant at 30{degree}C was found to be 0.243 h{sup {minus}1}. The growth of C. thiosulfatophilum may be modeled in terms of incoming light intensity using a Monod equation: {mu} = {sub 351} + I{sub o}/{sup 0.152}I{sub o}. Comparisons of the growth of R. rubrum and C. thiosulfatophilum shows that the specific growth rate of C. thiosulfatophilum is much higher at a given light intensity.

Klasson, K.T.; Basu, R.; Johnson, E.R.; Clausen, E.C.; Gaddy, J.L.

1992-03-01T23:59:59.000Z

296

Oscillations of the large-scale circulation in turbulent Rayleigh-B\\'{e}nard convection: the off-center mode and its relationship with the torsional mode  

E-Print Network (OSTI)

We report an experimental study of the large-scale circulation (LSC) in a turbulent Rayleigh-B\\'{e}nard convection cell with aspect ratio unity. The temperature-extremum-extraction (TEE) method for obtaining the dynamic information of the LSC is presented. With this method, the azimuthal angular positions of the hot ascending and cold descending flows along the sidewall are identified from the measured instantaneous azimuthal temperature profile. The motion of the LSC is then decomposed into two different modes: the azimuthal mode and the translational or off-center mode. Comparing to the previous sinusoidal-fitting (SF) method, it is found that both methods give the same information about the azimuthal motion of the LSC, but the TEE method in addition can provide information about the off-center motion of the LSC, which is found to oscillate time-periodically around the cell's central vertical axis with an amplitude being nearly independent of the turbulent intensity. It is further found that the azimuthal a...

Zhou, Quan; Zhou, Sheng-Qi; Sun, Chao; Xia, Ke-Qing

2008-01-01T23:59:59.000Z

297

ELECTRONIC BIVANE WIND DIRECTION INDICATOR  

DOE Patents (OSTI)

An apparatus is described for determining and recording three dimensional wind vectors. The apparatus comprises a rotatably mounted azimuthal wind component sensing head and an elevational wind component sensing head mounted to the azimuthal head and adapted to rotate therewith in the azimuthal plane and independently in the elevational plane. A heat source and thermocouples disposed thereabout are mounted within each of the sensing heads, the thermocouples providing electrical signals responsive to the temperature differential created by the passage of air through the sensing tuhes. The thermocouple signals are applied to drive mechanisms which position the sensing heads to a null wind position. Recording means are provided responsive to positional data from the drive mechanisms which are a measurement of the three dimensional wind vectors.

Moses, H.

1961-05-01T23:59:59.000Z

298

Gluon distribution functions and Higgs boson production at moderate transverse momentum  

Science Conference Proceedings (OSTI)

We investigate the gluon distribution functions and their contributions to the Higgs boson production in pp collisions in the transverse momentum-dependent factorization formalism. In addition to the usual azimuthal symmetric transverse momentum-dependent gluon distribution, we find that the azimuthal correlated gluon distribution also contributes to the Higgs boson production. This explains recent findings on the additional contribution in the transverse momentum resummation for the Higgs boson production as compared to that for electroweak boson production processes. We further examine the small-x naive k{sub t}-factorization in the dilute region and find that the azimuthal correlated gluon distribution contribution is consistently taken into account. The result agrees with the transverse momentum-dependent factorization formalism. We comment on the possible breakdown of the naive k{sub t}-factorization in the dense medium region, due to the unique behaviors for the gluon distributions.

Sun Peng [Center for High Energy Physics, Peking University, Beijing 100871 (China); Xiao Bowen [Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Yuan Feng [Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Center for High Energy Physics, Peking University, Beijing 100871 (China); RIKEN BNL Research Center, Building 510A, Brookhaven National Laboratory, Upton, New York 11973 (United States)

2011-11-01T23:59:59.000Z

299

Gluon distribution functions and Higgs boson production at moderate transverse momentum  

Science Conference Proceedings (OSTI)

We investigate the gluon distribution functions and their contributions to the Higgs boson production in pp collisions in the transverse momentum-dependent factorization formalism. In addition to the usual azimuthal symmetric transverse momentum-dependent gluon distribution, we find that the azimuthal correlated gluon distribution also contributes to the Higgs boson production. This explains recent findings on the additional contribution in the transverse momentum resummation for the Higgs boson production as compared to that for electroweak boson production processes. We further examine the small-x naive kt-factorization in the dilute region and find that the azimuthal correlated gluon distribution contribution is consistently taken into account. The result agrees with the transverse momentum-dependent factorization formalism. We comment on the possible breakdown of the naive kt-factorization in the dense medium region, due to the unique behaviors for the gluon distributions.

Sun P.; Yuan F.; Xiao, B.W.

2011-11-04T23:59:59.000Z

300

Contained Modes In Mirrors With Sheared Rotation  

SciTech Connect

In mirrors with E × B rotation, a fixed azimuthal perturbation in the lab frame can appear as a wave in the rotating frame. If the rotation frequency varies with radius, the plasma-frame wave frequency will also vary radially due to the Doppler shift. A wave that propagates in the high rotation plasma region might therefore be evanescent at the plasma edge. This can lead to radially localized Alfven eigenmodes with high azimuthal mode numbers. Contained Alfven modes are found both for peaked and non-peaked rotation profiles. These modes might be useful for alpha channeling or ion heating, as the high azimuthal wave number allows the plasma wave frequency in the rotating frame to exceed the ion cyclotron frequency. __________________________________________________

Abraham J. Fetterman and Nathaniel J. Fisch

2010-10-08T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Transverse Spin Effects at COMPASS  

E-Print Network (OSTI)

The investigation of transverse spin and transverse momentum effects in deep inelastic scattering is one of the key physics programs of the COMPASS collaboration. In the years 2002-2004 COMPASS took data scattering 160 GeV muons on a transversely polarized 6LiD target. In 2007, a transversely polarized NH3 target was used. Three different channels to access the transversity distribution function have been analyzed: The azimuthal distribution of single hadrons, involving the Collins fragmentation function, the azimuthal dependence of the plane containing hadron pairs, involving the two-hadron interference fragmentation function, and the measurement of the transverse polarization of lambda hyperons in the final state. Transverse quark momentum effects in a transversely polarized nucleon have been investigated by measuring the Sivers distribution function. Azimuthal asymmetries in unpolarized semi-inclusive deep-inelastic scattering give important information on the inner structure of the nucleon as well, and ca...

Schill, C

2010-01-01T23:59:59.000Z

302

Drifting localization of ionization runaway: Unraveling the nature of anomalous transport in high power impulse magnetron sputtering  

Science Conference Proceedings (OSTI)

The plasma over the magnetron’s erosion “racetrack” is not azimuthally uniform but concentrated in distinct dense plasma zones which move in the {vector E}×{vector B} direction with about 10% of the electrons’ {vector E}×{vector B}/B{sup 2} drift velocity. The plasma zones are investigated with a gated camera working in concert with a streak camera for Al, Nb, Cu, and W targets in Ar or Kr background gas. It is found that each plasma zone has a high density edge which is the origin of a plasma-generating electron jet leaving the target zone. Each region of strong azimuthal density gradient generates an azimuthal electric field which promotes the escape of magnetized electrons and the formation of electron jets and plasma flares. The phenomena are proposed to be caused by an ionization instability where each dense plasma zone exhibits a high stopping power for drifting high energy electrons, thereby enhancing itself.

Ni, Pavel; Rauch, Albert

2011-12-04T23:59:59.000Z

303

Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Final Report  

Science Conference Proceedings (OSTI)

The objective of our research was to develop and demonstrate seismic data-acquisition and data-processing technologies that allow geothermal prospects below high-velocity rock outcrops to be evaluated. To do this, we acquired a 3-component seismic test line across an area of exposed high-velocity rocks in Brewster County, Texas, where there is high heat flow and surface conditions mimic those found at numerous geothermal prospects. Seismic contractors have not succeeded in creating good-quality seismic data in this area for companies who have acquired data for oil and gas exploitation purposes. Our test profile traversed an area where high-velocity rocks and low-velocity sediment were exposed on the surface in alternating patterns that repeated along the test line. We verified that these surface conditions cause non-ending reverberations of Love waves, Rayleigh waves, and shallow critical refractions to travel across the earth surface between the boundaries of the fast-velocity and slow-velocity material exposed on the surface. These reverberating surface waves form the high level of noise in this area that does not allow reflections from deep interfaces to be seen and utilized. Our data-acquisition method of deploying a box array of closely spaced geophones allowed us to recognize and evaluate these surface-wave noise modes regardless of the azimuth direction to the surface anomaly that backscattered the waves and caused them to return to the test-line profile. With this knowledge of the surface-wave noise, we were able to process these test-line data to create P-P and SH-SH images that were superior to those produced by a skilled seismic data-processing contractor. Compared to the P-P data acquired along the test line, the SH-SH data provided a better detection of faults and could be used to trace these faults upward to the boundaries of exposed surface rocks. We expanded our comparison of the relative value of S-wave and P-wave seismic data for geothermal applications by inserting into this report a small part of the interpretation we have done with 3C3D data across Wister geothermal field in the Imperial Valley of California. This interpretation shows that P-SV data reveal faults (and by inference, also fractures) that cannot be easily, or confidently, seen with P-P data, and that the combination of P-P and P-SV data allows VP/VS velocity ratios to be estimated across a targeted reservoir interval to show where an interval has more sandstone (the preferred reservoir facies). The conclusion reached from this investigation is that S-wave seismic technology can be invaluable to geothermal operators. Thus we developed a strong interest in understanding the direct-S modes produced by vertical-force sources, particularly vertical vibrators, because if it can be demonstrated that direct-S modes produced by vertical-force sources can be used as effectively as the direct-S modes produced by horizontal-force sources, geothermal operators can acquire direct-S data across many more prospect areas than can be done with horizontal-force sources, which presently are limited to horizontal vibrators. We include some of our preliminary work in evaluating direct-S modes produced by vertical-force sources.

Hardage, Bob A; DeAngelo, Michael V; Ermolaeva, Elena; Hardage, Bob A; Remington, Randy; Sava, Diana; Wagner, Donald; Wei, Shuijion

2013-02-28T23:59:59.000Z

304

High-Velocity Rocks Final Report  

DOE Green Energy (OSTI)

The objective of our research was to develop and demonstrate seismic data-acquisition and data-processing technologies that allow geothermal prospects below high-velocity rock outcrops to be evaluated. To do this, we acquired a 3-component seismic test line across an area of exposed high-velocity rocks in Brewster County, Texas, where there is high heat flow and surface conditions mimic those found at numerous geothermal prospects. Seismic contractors have not succeeded in creating good-quality seismic data in this area for companies who have acquired data for oil and gas exploitation purposes. Our test profile traversed an area where high-velocity rocks and low-velocity sediment were exposed on the surface in alternating patterns that repeated along the test line. We verified that these surface conditions cause non-ending reverberations of Love waves, Rayleigh waves, and shallow critical refractions to travel across the earth surface between the boundaries of the fast-velocity and slow-velocity material exposed on the surface. These reverberating surface waves form the high level of noise in this area that does not allow reflections from deep interfaces to be seen and utilized. Our data-acquisition method of deploying a box array of closely spaced geophones allowed us to recognize and evaluate these surface-wave noise modes regardless of the azimuth direction to the surface anomaly that backscattered the waves and caused them to return to the test-line profile. With this knowledge of the surface-wave noise, we were able to process these test-line data to create P-P and SH-SH images that were superior to those produced by a skilled seismic data-processing contractor. Compared to the P-P data acquired along the test line, the SH-SH data provided a better detection of faults and could be used to trace these faults upward to the boundaries of exposed surface rocks. We expanded our comparison of the relative value of S-wave and P-wave seismic data for geothermal applications by inserting into this report a small part of the interpretation we have done with 3C3D data across Wister geothermal field in the Imperial Valley of California. This interpretation shows that P-SV data reveal faults (and by inference, also fractures) that cannot be easily, or confidently, seen with P-P data, and that the combination of P-P and P-SV data allows VP/VS velocity ratios to be estimated across a targeted reservoir interval to show where an interval has more sandstone (the preferred reservoir facies). The conclusion reached from this investigation is that S-wave seismic technology can be invaluable to geothermal operators. Thus we developed a strong interest in understanding the direct-S modes produced by vertical-force sources, particularly vertical vibrators, because if it can be demonstrated that direct-S modes produced by vertical-force sources can be used as effectively as the direct-S modes produced by horizontal-force sources, geothermal operators can acquire direct-S data across many more prospect areas than can be done with horizontal-force sources, which presently are limited to horizontal vibrators. We include some of our preliminary work in evaluating direct-S modes produced by vertical-force sources.

Hardage, Bob A; DeAngelo, Michael V; Ermolaeva, Elena; Hardage, Bob A; Remington, Randy; Sava, Diana; Wagner, Donald; Wei, Shuijion

2013-02-28T23:59:59.000Z

305

QCD Corrections to Jet Correlations in Weak Boson Fusion  

E-Print Network (OSTI)

Higgs boson production via weak boson fusion is sensitive to the tensor structure of the HVV (V=W,Z) couplings, which distinguishes loop induced vertices from SM expectations. At the CERN Large Hadron Collider this information shows up most clearly in the azimuthal angle correlations of the two forward and backward quark jets which are typical for weak boson fusion. We calculate the next-to-leading order QCD corrections to this process, in the presence of anomalous HVV couplings. Gluon emission does not significantly change the azimuthal jet correlations.

Terrance Figy; Dieter Zeppenfeld

2004-03-30T23:59:59.000Z

306

Ridge, Bulk, and Medium Response: How to Kill Models and Learn Something in the Process  

E-Print Network (OSTI)

In these proceedings, we highlight experimental data (published and preliminary) related to jet quenching and the response of the medium to this deposited energy. Signatures in two- and three- particle hadron correlations indicate interesting structures near the trigger particle in azimuth and over a broad range in pseudo-rapidity, often termed "the ridge", and conical-like structures separated in azimuth opposite to the trigger particle. We review numerous theoretical interpretations of the ridge in particular with a critical eye for the key properties that allow one to discriminate between, or rule out, certain physical pictures and models (and hopefully learn something in the process).

J. L. Nagle

2009-07-15T23:59:59.000Z

307

Modified Fragmentation Function in Heavy Ion Collisions at RHIC via Direct photon-Jet Measurements  

E-Print Network (OSTI)

The presented results are the first measurements at RHIC for direct $\\gamma$-charged hadron azimuthal correlations in heavy ion collisions. We use these correlations to study the color charge density of the medium through the medium-induced modification of high-p$_T$ parton fragmentation. Azimuthal correlations of direct photons at high transverse energy (8 $direct photons and photons from the decays of high p$_T$ $\\pi^{0}$. The per-trigger away-side yield of direct $\\gamma$ is smaller than from $\\pi^{0}$ trigger at the same centrality class. Within the current uncertainty the I$_{CP}$ of direct $\\gamma$ and $\\pi^{0}$ are similar.

Ahmed M. Hamed

2008-09-08T23:59:59.000Z

308

Elements of a continuous-wave borehole radar. Final report  

DOE Green Energy (OSTI)

The theory is developed for the antenna array for a proposed continuous-wave, ground-penetrating radar for use in a borehole, and field measurements are presented. Accomplishments include the underground measurement of the transmitting beam in the azimuth plane, active azimuth-steering of the transmitting beam, and the development of a range-to-target algorithm. The excellent performance of the antenna array supports the concept of a continuous-wave borehole radar. A field-prototype should be developed for use in both geothermal zones and for the exploration and recovery of oil and gas.

Caffey, T.W.H. [Sandia National Labs., Albuquerque, NM (United States). Geophysical Technology Dept.

1997-08-01T23:59:59.000Z

309

NISTIR 7266  

Science Conference Proceedings (OSTI)

... possible effects of scanning hot surfaces such as desert sand, heated pipes ... by using the larger range intervals and hence the tight range intervals ...

2005-12-06T23:59:59.000Z

310

West Texas Intermediate crude oil price and NYMEX 95% confidence ...  

U.S. Energy Information Administration (EIA)

West Texas Intermediate crude oil price and NYMEX 95% confidence intervals January 2007 – October 2009 Short-Term Energy Outlook Note: Confidence intervals for the ...

311

Real Time Pricing as a Default or Optional Service for C&I Customers: A Comparative Analysis of Eight Case Studies  

E-Print Network (OSTI)

P. , 2004, “Utility Metering: Measure When and How Much? ”27 4.4.2 Interval metering24 Table 4-5. Customer Size Threshold and Interval Metering

Barbose, Galen; Goldman, Charles; Bharvirkar, Ranjit; Hopper, Nicole; Ting, Michael; Neenan, Bernie

2005-01-01T23:59:59.000Z

312

2011 Wind Technologies Market Report  

E-Print Network (OSTI)

study. Regions with fast energy markets, for example, changeis set aside in one energy market interval is then releasedto be dispatched in a later energy market interval, whereas

Bolinger, Mark

2013-01-01T23:59:59.000Z

313

Time and Frequency from A to Z: Ti  

Science Conference Proceedings (OSTI)

... Instruments such as oscilloscopes and time interval counters are ... An instrument used to measure the time interval ... The main gate controls the time at ...

2010-10-05T23:59:59.000Z

314

Flow Distortion by a Solent Sonic Anemometer: Wind Tunnel Calibration and Its Assessment for Flux Measurements over Forest and Field  

Science Conference Proceedings (OSTI)

Main flow distortion effects caused by the sonic probe (i.e., deflection and attenuation/amplification of the wind vector) as a function of the azimuth angle of the incoming flow were examined by means of wind tunnel measurements at four ...

A. Grelle; A. Lindroth

1994-12-01T23:59:59.000Z

315

Site Errors and Detection Efficiency in a Magnetic Direction-Finder Network for Locating Lightning Strikes to Ground  

Science Conference Proceedings (OSTI)

We have tested a network of magnetic direction-finders (DFs) that locate ground strikes in Oklahoma and surrounding states in order to determine detection efficiency for the network and systematic errors in azimuth (i.e., site errors) for each of ...

Douglas M. Mach; Donald R. MacGorman; W. David Rust; Roy T. Arnold

1986-03-01T23:59:59.000Z

316

Remarks on Higgs boson production  

E-Print Network (OSTI)

We demonstrate that Higgs boson production in fusion processes is accompanied by large azimuthal asymmetry. This asymmetry can be used to facilitate detection of Higgs boson events. We also demonstrate that the double Higgs boson production at threshold is a very appropriate process to test the existence of new physics at higher energy.

A. Dobrovolskaya; V. Novikov

1997-05-30T23:59:59.000Z

317

GPS Dropwindsonde and WSR-88D Observations of Tropical Cyclone Vertical Wind Profiles and Their Characteristics  

Science Conference Proceedings (OSTI)

The characteristics of tropical cyclone vertical wind profiles and their associated wind speed peaks below 1.5 km were examined through the use of a large number of GPS dropwindsondes (GPS sondes) and radar-derived velocity–azimuth display (VAD) ...

Ian M. Giammanco; John L. Schroeder; Mark D. Powell

2013-02-01T23:59:59.000Z

318

24 IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 30, NO. 1, FEBRUARY 2002 Diocotron Wave Echoes in a Pure Electron Plasma  

E-Print Network (OSTI)

. A second 4 tickler wave is then excited 500 s later [Fig. 1(d)] by applying a 20 V kick to four wall sectors separated azimuthally by 90 . The second pulse of Fig. 2 shows the time at which the 4 tickler wave is excited. This signal is not the 4 wave oscillation but rather a direct coupling of the tickler

California at San Diego, University of

319

System size and energy dependence of near-side dihadron correlations  

E-Print Network (OSTI)

rticle azimuthal (??) and pseudorapidity (??) correlations using a trigger particle with large transverse momentum (pT) in d+Au, Cu+Cu, and Au+Au collisions at ?sNN = 62.4 GeV and 200 GeV from the STAR experiment at the ...

Balewski, Jan T.

320

Third harmonic flow of charged particles in Au + Au collisions at ?s[subscript NN]=200 GeV  

E-Print Network (OSTI)

We report measurements of the third harmonic coefficient of the azimuthal anisotropy, v[subscript 3], known as triangular flow. The analysis is for charged particles in Au+Au collisions at ?s[subscript NN]=200 GeV, based ...

Betancourt, M. J.

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011  

E-Print Network (OSTI)

PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University OF COSO GEOTHERMAL FIELD, CA Kelly Blake and Nicholas C. Davatzes Temple University 1901 North 13th Street structures in image logs of wells from the Coso Geothermal Field (CGF), CA record variation in the azimuth

Stanford University

322

Identification and selection rules of the spin-wave eigen-modes in a normally magnetized nano-pillar  

E-Print Network (OSTI)

Identification and selection rules of the spin-wave eigen-modes in a normally magnetized nano nano-pillar (Permalloy-Copper-Permalloy) by means of a Magnetic Resonance Force Microscope (MRFM). We azimuthal index = 0, the RF cur- rent flowing through the nano-pillar, creating a circular RF Oersted field

323

Alignment of Hurricane-like Vortices on f and ? Planes  

Science Conference Proceedings (OSTI)

A nonlinear, two-layer, vortex-tracking semispectral model (i.e., Fourier transformed in azimuth only) is used to study the evolution of dry, but otherwise hurricane-like, initially tilted vortices in quiescent surroundings on f and ? planes. The ...

Robert W. Jones; Hugh E. Willoughby; Michael T. Montgomery

2009-06-01T23:59:59.000Z

324

Land Surface Reflectance: A Possible Earth Science  

E-Print Network (OSTI)

are in magenta, water bodies are outlined in white. MODIS Surface Reflectance South Africa From: E. Vermote, UMD correction (low, medium, high) ­ cloud and cloud shadow ­ snow flag ­ land/water flag · Supplemental information ­ Viewing geometry (view and solar zenith and azimuth angles) ­ Geolocation (lat

325

Geomagnetic Effects on Atmospheric Neutrinos  

E-Print Network (OSTI)

Geomagnetic effects distort the zenith angle distribution of sub--GeV and few--GeV atmospheric neutrinos, breaking the up--down symmetry that would be present in the absence of neutrino oscillations and without a geomagnetic field. The geomagnetic effects also produce a characteristic azimuthal dependence of the $\

Paolo Lipari; T. K. Gaisser; Todor Stanev

1998-03-09T23:59:59.000Z

326

The DeTect Inc. RAPTOR VAD-BL Radar Wind Profiler  

Science Conference Proceedings (OSTI)

The DeTect Inc. RAPTOR VAD-BL (Velocity-Azimuth Display Boundary Layer) radar wind profiler is a pulsed Doppler radar used to make automatic unattended measurements of wind profiles in the lower atmosphere. All data products are produced on site, ...

Elías Lau; Scott McLaughlin; Frank Pratte; Bob Weber; David Merritt; Maikel Wise; Gary Zimmerman; Matthew James; Megan Sloan

327

ASHRAE Transactions 103(1) (1997). Solar Heat Gain Coefficient of Complex Fenestrations  

E-Print Network (OSTI)

LBNL-39248 DA-359 ASHRAE Transactions 103(1) (1997). Solar Heat Gain Coefficient of Complex, the most recent edition of the ASHRAE Handbook lists a table characterizing a venetian blind with a single shading coefficient number (ASHRAE 1993) for 0º azimuth and 35º incident angle, (the latter corresponding

328

Optical rotatory power of polymer-stabilized blue phase liquid crystals Yifan Liu,1  

E-Print Network (OSTI)

indicate that the optical rotatory power (ORP) of some nano-scale double-twist cylinders in a BPLC through the crossed polarizers. Rotating the analyzer in azimuthal direction to correct this ORP can should be taken into consideration, which is optical rotatory power (ORP).15­18 According to Meiboom

Wu, Shin-Tson

329

Fast soft self-shadowing on dynamic height fields  

Science Conference Proceedings (OSTI)

We present a new, real-time method for rendering soft shadows from large light sources or lighting environments on dynamic height fields. The method first computes a horizon map for a set of azimuthal directions. To reduce sampling, we compute a multi-resolution ...

John Snyder; Derek Nowrouzezahrai

2008-06-01T23:59:59.000Z

330

A QuikSCAT climatology of tropical cyclone size  

E-Print Network (OSTI)

QuikSCAT data of near-surface wind vectors for the years 1999–2008 are used to create a climatology of tropical cyclone (TC) size, defined as the radius of vanishing winds. The azimuthally-averaged radius of 12 ms?1 [ms ...

Chavas, Daniel Robert

331

Continuous cryopump with a method for removal of solidified gases  

DOE Patents (OSTI)

An improved cryopump for the removal of gases from a high vacuum, comprising a cryopanel incorporating honeycomb structure, refrigerant means thermally connected to the cryopanel, and a rotatable channel moving azimuthally around an axis located near the center of the cryopanel, removing gases adsorbed within the honeycomb structure by subliming them and conducting them outside the vacuum vessel. 4 figs.

Carlson, L.W.; Herman, H.

1988-05-05T23:59:59.000Z

332

This issue of Briefings focuses on one essential element of all airports. Navigation  

E-Print Network (OSTI)

This issue of Briefings focuses on one essential element of all airports. Navigation aids navigational facilities that provide combined azimuth and glide slope guidance to a runway (pre- cision) and those that do not (nonprecision). Nonprecision refers to facilities without a glide slope and does

Minnesota, University of

333

PBFA II lithium beam characterization from inner-shell x-ray images  

SciTech Connect

The Particle Beam Fusion Accelerator (PBFA II) is not driving targets with ICF-relevant lithium ion beams. During the most recent lithium beam target series, time-integrated x-ray pinhole cameras viewed the ion-induced inner-shell x-ray fluorescence from the central gold cone target and a titanium-coated strip. Ion beam profiles at a nominal 10 mm radius and fixed azimuthal direction were obtained from images of the Ti K{sub {alpha}}, fluorescence of a Ti-coated Al diagnostic wire. The gold cone gave us beam profiles at a nominal 3 mm radius and at all azimuthal angles from the Au L{sub {alpha}} fluorescence. From these profiles, we obtained the ion beam vertical focus position, full-width-at-half-maximum, and the degree of azimuthal uniformity for the lithium target shots. For these initial results, beam steering problems were evident. Azimuthal uniformity was measured from the ion beam footprint on the outer Au case (predominantly Au L{sub {alpha}}) of the hohlraum target and were found to be in the same range (up to 30%) as for previous proton beam target series. We then present plans for Li beam diagnostics for an upcoming target experimental series.

Moats, A.R.; Derzon, M.S.; Chandler, G.A.; Dukart, R.J.; Haill, T.A.

1994-05-01T23:59:59.000Z

334

Influence of the order parameter on the anchoring energy of liquid crystals  

Science Conference Proceedings (OSTI)

No theory of the polar and azimuthal anchoring energies of liquid crystals (LCs) has been developed on a molecular level, despite the scientific and practical topicality of the problem. The interaction energies of mesogenic molecules with graphite and polyethylene surfaces calculated previously by the method of atom-atom potentials are in good agreement with the experimental data, but, at the same time, the calculated polar and azimuthal anchoring energies are larger than their experimental values by one and two orders of magnitude, respectively. To explain these values, the anchoring energy has been assumed to depend not only on the interaction with the surface but also on the interaction between the LC molecules arranged in the model in the form of quasi-layers. The mesogenic molecules have been modeled by rods with virtual C' atoms (carbon atoms with hydrogen atoms attached to them) 'threaded' on them. The molecule orientation has been specified by the polar and azimuthal angles {theta}{sub i}, {phi}{sub i} and {theta}{sub j}, {phi}{sub j} relative to the directors of the ith and jth layers. The derived polar and azimuthal anchoring energies as well as their dependences on the order parameter have turned out to be close to the experimental data.

Dadivanyan, A. K., E-mail: dadivank@mail.ru; Chausov, D. N., E-mail: d.chausov@yandex.ru [Moscow State Regional University (Russian Federation); Noa, O. V. [Moscow State University (Russian Federation); Belyaev, V. V. [Moscow State Regional University (Russian Federation); Chigrinov, V. G. [Hong Kong University of Science and Technology (China); Pashinina, Yu. M. [Moscow State Regional University (Russian Federation)

2012-12-15T23:59:59.000Z

335

Heliostat control  

DOE Patents (OSTI)

An improvement in a system and method of controlling heliostat in which the heliostat is operable in azimuth and elevation by respective stepper motors and including the respective steps or means for calculating the position for the heliostat to be at a commanded position, determining the number of steps in azimuth and elevation for each respective motor to get to the commanded position and energizing both the azimuth and elevation stepper motors to run in parallel until predetermined number of steps away from the closest commanded position in azimuth and elevation so that the closest position has been achieved, and thereafter energizing only the remaining motor to bring it to its commanded position. In this way, the heliostat can be started from a stowed position in the morning and operated by a computer means to its commanded position and kept correctly oriented throughout the day using only the time of the day without requiring the usual sensors and feedback apparatus. A computer, or microprocessor, can then control a plurality of many heliostats easily and efficiently throughout the day.

Kaehler, James A. (Littleton, CO)

1984-01-01T23:59:59.000Z

336

View  

E-Print Network (OSTI)

However, numerical simulations allow us to conjecture ... property of the optimal weights a?0,...,a?n and also an illustrative example of ... Let us define the weighted sum of exponential functions for a ? RN+1 and h ...... be two azimuth angles. ... [2] A. Labeyrie, Resolved imaging of extra-solar planets with future 10-

337

The DeTect Inc. RAPTOR VAD-BL Radar Wind Profiler  

Science Conference Proceedings (OSTI)

The DeTect Inc. RAPTOR velocity–azimuth display boundary layer (VAD-BL) radar wind profiler is a pulsed Doppler radar used to make automatic unattended measurements of wind profiles in the lower atmosphere. All data products are produced on site, ...

Elías Lau; Scott McLaughlin; Frank Pratte; Bob Weber; David Merritt; Maikel Wise; Gary Zimmerman; Matthew James; Megan Sloan

2013-09-01T23:59:59.000Z

338

Comparison of CW-Lidar-Measured Wind Values Obtained by Full Conical Scan, Conical Sector Scan and Two-Point Techniques  

Science Conference Proceedings (OSTI)

Continuous-wave (CW) Doppler lidar measurements of wind magnitude and direction that are based on radial velocity data on only a part of a full azimuth circle compare favorably with measurements based on a full circle. Winds were measured over an ...

R. L. Schwiesow; P. Köpp; Ch Werner

1985-03-01T23:59:59.000Z

339

Error correction for IFSAR  

DOE Patents (OSTI)

IFSAR images of a target scene are generated by compensating for variations in vertical separation between collection surfaces defined for each IFSAR antenna by adjusting the baseline projection during image generation. In addition, height information from all antennas is processed before processing range and azimuth information in a normal fashion to create the IFSAR image.

Doerry, Armin W. (Albuquerque, NM); Bickel, Douglas L. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

340

Rotation Angle for the Optimum Tracking of One-Axis Trackers  

DOE Green Energy (OSTI)

An equation for the rotation angle for optimum tracking of one-axis trackers is derived along with equations giving the relationships between the rotation angle and the surface tilt and azimuth angles. These equations are useful for improved modeling of the solar radiation available to a collector with tracking constraints and for determining the appropriate motor revolutions for optimum tracking.

Marion, W. F.; Dobos, A. P.

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Solar photovoltaic panels tracking system  

Science Conference Proceedings (OSTI)

This research project concentrates on the design and control of a two-degrees-of-freedom orientation system for the photovoltaic solar panels in sunny regions which are considered very rich in solar energy. A brief background on the sun path and behavior ... Keywords: altitude, azimuth, closed-loop control, open-loop control, orientation, sensor, solar photovoltaic panels, solar tracking

Ahmed Abu Hanieh

2010-05-01T23:59:59.000Z

342

International Journal of Phytoremediation, 7:231240, 2005 Copyright C Taylor & Francis Inc.  

E-Print Network (OSTI)

using an on-of Dark Current and of Linearity (by using an on- board LED and variable integration times Index (TC) Volcanic SO2 estimate (TC) SO2 Index (TC,NP)g ( , , ) Solar Azimuth Angle (TC,LP) Spacecraft

Ma, Lena

343

Doppler Radar Observations of Dust Devils in Texas  

Science Conference Proceedings (OSTI)

Analyses of a dust-devil dataset collected in northwest Texas are presented. The data were collected just above the ground at close range with a mobile, W-band (3-mm wavelength) Doppler radar having an azimuthal (radial) resolution of 3–5 m (30 m)...

Howard B. Bluestein; Christopher C. Weiss; Andrew L. Pazmany

2004-01-01T23:59:59.000Z

344

Prediction using Numerical Simulations, A Bayesian Framework for Uncertainty Quantification and its Statistical Challenge  

E-Print Network (OSTI)

production with confidence intervals. SPE 66350, Society of Petroelum Engineers, 2001. SPE Reservoir Sim

New York at Stoney Brook, State University of

345

GAS HILLS SITE  

E-Print Network (OSTI)

1 t6000 / \\. Groundwater flowpath indicated with reverse particle tracking Topographic Contours (20 foot intervals)

Gas Hills Site; Extraction Well

2000-01-01T23:59:59.000Z

346

A new framework for elimination-based data flow analysis using DJ graphs  

Science Conference Proceedings (OSTI)

Keywords: DJ graphs, Tarjan's interval, exhaustive and incremental data flow analysis, irreducible flowgraphs, reducible flowgraphs

Vugranam C. Sreedhar; Guang R. Gao; Yong-Fong Lee

1998-03-01T23:59:59.000Z

347

Interactive out-of-core isosurface extraction  

Science Conference Proceedings (OSTI)

Keywords: interval tree, isosurface extraction, marching cubes, out-of-core computation, scientific visualization

Yi-Jen Chiang; Cláudio T. Silva; William J. Schroeder

1998-10-01T23:59:59.000Z

348

The Stable non-Gaussian Asset Allocation: A Comparison with the Classical Gaussian Approach  

E-Print Network (OSTI)

Autocorrelation function (ACF) and Partial Autocorrelationof confidence interval for ACF and PACF. The simulations

Tokat, Yesim; Rachev, Svetlozar T.; Schwartz, Eduardo

2000-01-01T23:59:59.000Z

349

Guide to Passive Solar Home Design  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Elements of Passive Solar Design Elements of Passive Solar Design To design a completely passive solar home, you need to incorporate what are considered the five elements of passive solar design: 1. Aperture (Windows) - Windows should face within 30 degrees of true south, and during winter months they should not be shaded from 9 a.m. to 3 p.m. The windows in living areas should face south, while the windows in bedrooms should face north. In colder climates, reduce the window area

350

Jupiter's Occultation Radii: Implications for its Internal Dynamics  

E-Print Network (OSTI)

The physical shape of a giant planet can reveal important information about its centrifugal potential, and therefore, its rotation. In this paper I investigate the response of Jupiter's shape to differential rotation on cylinders of various cylindrical radii using a simple equipotential theory. I find that both solid-body rotation (with System III rotation rate) and differential rotation on cylinders up to a latitude between 20 and 30 degrees are consistent with Jupiter's measured shape. Occultation measurements of Jupiter's shape could provide an independent method to constrain the depth of its zonal winds.

Helled, Ravit

2011-01-01T23:59:59.000Z

351

R&D ERL: Magnetic measurements of the ERL magnets  

SciTech Connect

The magnet system of ERL consists of G5 solenoids, 6Q12 quadrupoles with 0.58 T/m gradient, 3D60 dipoles with 0.4 T central field, 15 and 30 degree Z-bend injection line dipole/quadrupole combined function magnets, and extraction line magnets. More details about the magnets can be found in a report by G. Mahler. Field quality in all the 6Q12 quadrupoles, 3D60 dipoles and the injection line magnets has been measured with either a rotating coil, or a Hall probe mapper. This report presents the results of these magnetic measurements.

Jain, A.

2010-08-01T23:59:59.000Z

352

Off-Angle Iris Correction using a Biological Model  

SciTech Connect

This work implements an eye model to simulate corneal refraction effects. Using this model, ray tracing is performed to calculate transforms to remove refractive effects in off-angle iris images when reprojected to a frontal view. The correction process is used as a preprocessing step for off-angle iris images for input to a commercial matcher. With this method, a match score distribution mean improvement of 11.65% for 30 degree images, 44.94% for 40 degree images, and 146.1% improvement for 50 degree images is observed versus match score distributions with unmodi ed images.

Thompson, Joseph T [ORNL; Santos-Villalobos, Hector J [ORNL; Karakaya, Mahmut [ORNL; Barstow, Del R [ORNL; Bolme, David S [ORNL; Boehnen, Chris Bensing [ORNL

2013-01-01T23:59:59.000Z

353

Interactions of Oxygen and Hydrogen on Pd(111) surface  

DOE Green Energy (OSTI)

The coadsorption and interactions of oxygen and hydrogen on Pd(1 1 1) was studied by scanning tunneling microscopy and density functional theory calculations. In the absence of hydrogen oxygen forms a (2 x 2) ordered structure. Coadsorption of hydrogen leads to a structural transformation from (2 x 2) to a ({radical}3 x {radical}3)R30 degree structure. In addition to this transformation, hydrogen enhances the mobility of oxygen. To explain these observations, the interaction of oxygen and hydrogen on Pd(1 1 1) was studied within the density functional theory. In agreement with the experiment the calculations find a total energy minimum for the oxygen (2 x 2) structure. The interaction between H and O atoms was found to be repulsive and short ranged, leading to a compression of the O islands from (2 x 2) to ({radical}3 x {radical}3)R30 degree ordered structure at high H coverage. The computed energy barriers for the oxygen diffusion were found to be reduced due to the coadsorption of hydrogen, in agreement with the experimentally observed enhancement of oxygen mobility. The calculations also support the finding that at low temperatures the water formation reaction does not occur on Pd(1 1 1).

Demchenko, D.O.; Sacha, G.M.; Salmeron, M.; Wang, L.-W.

2008-06-25T23:59:59.000Z

354

ARM - Datastreams - xsacrvpt  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsxsacrvpt Datastreamsxsacrvpt Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRVPT X-Band Scanning ARM Cloud Radar (XSACR) Vertically Pointing Scan Active Dates 2011.09.14 - 2013.07.29 Measurement Categories Cloud Properties Originating Instrument X-Band Scanning ARM Cloud Radar (XSACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Altitude m altitude Altitude above ground level m altitude_agl Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time ) Azimuth angle from true north degrees azimuth ( time )

355

ARM - Datastreams - 1290rwpwindmom  

NLE Websites -- All DOE Office Websites (Extended Search)

rwpwindmom rwpwindmom Documentation Data Quality Plots Citation DOI: 10.5439/1025032 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : 1290RWPWINDMOM 1290-MHz Radar Wind Profiler/RASS (RWP1290): wind moments Active Dates 2007.03.19 - 2012.03.31 Measurement Categories Cloud Properties Originating Instrument Radar Wind Profiler (RWP) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Beam azimuth angle deg beam_azimuth ( time ) Beam elevation angle deg beam_elevation ( time )

356

ARM - Datastreams - 50rwpwindspec  

NLE Websites -- All DOE Office Websites (Extended Search)

rwpwindspec rwpwindspec Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : 50RWPWINDSPEC 50-MHz Radar Wind Profiler/RASS (RWP50): wind spectra Active Dates 2001.04.01 - 2006.05.04 Measurement Categories Aerosols, Cloud Properties Originating Instrument Radar Wind Profiler (50 MHz) (50RWP) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Beam azimuth angle deg beam_azimuth ( time ) Beam elevation angle deg beam_elevation ( time ) Spectral bin number unitless bins ( bins )

357

ARM - Datastreams - dlrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsdlrhi Datastreamsdlrhi Documentation Data Quality Plots Citation DOI: 10.5439/1046188 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : DLRHI Doppler LIDAR Range-Height Indicator scan Active Dates 2011.07.21 - 2012.03.31 Measurement Categories Aerosols, Cloud Properties Originating Instrument Doppler Lidar (DL) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Backscattered radiation Attenuated backscatter 1/(m sr) attenuated_backscatter ( time, range ) Azimuth relative to true north degrees azimuth ( time ) Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time

358

ARM - Datastreams - wsacrppi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamswsacrppi Datastreamswsacrppi Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : WSACRPPI W-Band Scanning ARM Cloud Radar (W-SACR) PPI Scan Active Dates 2011.05.24 - 2013.12.10 Measurement Categories Cloud Properties Originating Instrument Scanning ARM Cloud Radar, tuned to W-Band (95GHz) (WSACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Altitude m altitude Altitude above ground level m altitude_agl Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time ) Azimuth angle from true north degrees azimuth ( time )

359

ARM - Datastreams - dlrhi2  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsdlrhi2 Datastreamsdlrhi2 Documentation Data Quality Plots Citation DOI: 10.5439/1025188 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : DLRHI2 Doppler Lidar - Range-Height Indicator #2 Active Dates 2010.10.21 - 2010.11.21 Measurement Categories Aerosols, Cloud Properties Originating Instrument Doppler Lidar (DL) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Backscattered radiation Attenuated backscatter 1/(m sr) attenuated_backscatter ( time, range ) Azimuth relative to true north degrees azimuth ( time ) Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time

360

ARM - Datastreams - xsacrawrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsxsacrawrhi Datastreamsxsacrawrhi Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRAWRHI X-Band Scanning ARM Cloud Radar (XSACR) Along-Wind RHI Scan Active Dates 2011.09.14 - 2012.10.21 Measurement Categories Cloud Properties Originating Instrument X-Band Scanning ARM Cloud Radar (XSACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Altitude m altitude Altitude above ground level m altitude_agl Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time ) Azimuth angle from true north degrees azimuth ( time )

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

ARM - Datastreams - nimfr  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsnimfr Datastreamsnimfr Documentation Data Quality Plots Citation DOI: 10.5439/1025258 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example nimfr Archive Data Plot Example nimfr Archive Data Plot Datastream : NIMFR Normal Incidence Multi-Filter Radiometer (NIMFR): direct normal irradiances Active Dates 1997.10.16 - 2014.01.09 Measurement Categories Radiometric Originating Instrument Normal Incidence Multifilter Radiometer (NIMFR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Airmass unitless airmass ( time ) Altitude above mean sea level m alt Azimuth angle degrees azimuth_angle ( time )

362

ARM - Datastreams - mfr10m  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsmfr10m Datastreamsmfr10m Documentation Data Quality Plots Citation DOI: 10.5439/1025224 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example mfr10m Archive Data Plot Example mfr10m Archive Data Plot Datastream : MFR10M Multi-Filter Radiometer (MFR): upwelling irradiance at 10-meter height Active Dates 1994.03.26 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Multifilter Radiometer (MFR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Airmass unitless airmass ( time ) Altitude above mean sea level m alt Azimuth angle degrees azimuth_angle ( time )

363

ARM - Datastreams - mwrp  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsmwrp Datastreamsmwrp Documentation Data Quality Plots Citation DOI: 10.5439/1025254 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : MWRP Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals Active Dates 2004.02.19 - 2014.01.01 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument Microwave Radiometer Profiler (MWRP) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Azimuth angle degrees azimuth Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time

364

ARM - Datastreams - mwr3c  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsmwr3c Datastreamsmwr3c Documentation Data Quality Plots Citation DOI: 10.5439/1025248 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : MWR3C Microwave Radiometer, 3 Channel Active Dates 2011.01.11 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Microwave Radiometer, 3 Channel (MWR3C) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Azimuth deg azimuth ( time ) Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Elevation deg elevation ( time ) Hail accumulation hit/cm^2 hail_accumulation ( time )

365

Building Energy Software Tools Directory: Solar Rater  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Rater Solar Rater Solar Rater logo Solar Rater app for Android devices makes it easy to determine the solar energy potential for any location on Earth, and calculates the appropriate size for a photovoltaic (PV) system at that location. Key features include: Automatic location detection with GPS, Wi-Fi, or cell tower identification Automatic orientation detection measures the azimuth and pitch of solar panels Automatic magnetic declination conversion gives azimuth based on true north Automatic solar radiation determination based on location and orientation (model result) Outputs the appropriate size of a PV system in DC Watts Data can also be entered manually for offsite use Great teaching tool for novices Accurate results for solar energy professionals Outputs environmental benefits (e.g., greenhouse gas emissions,

366

ARM - Datastreams - mfr25m  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsmfr25m Datastreamsmfr25m Documentation Data Quality Plots Citation DOI: 10.5439/1025225 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example mfr25m Archive Data Plot Example mfr25m Archive Data Plot Datastream : MFR25M Multi-Filter Radiometer (MFR): upwelling irradiance at 25-meter height Active Dates 1994.04.17 - 2014.01.02 Measurement Categories Radiometric Originating Instrument Multifilter Radiometer (MFR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Airmass unitless airmass ( time ) Altitude above mean sea level m alt Azimuth angle degrees azimuth_angle ( time )

367

ARM - Datastreams - xsacrcwrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsxsacrcwrhi Datastreamsxsacrcwrhi Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRCWRHI X-Band Scanning ARM Cloud Radar (XSACR) Cross-Wind RHI Scan Active Dates 2011.09.14 - 2012.10.21 Measurement Categories Cloud Properties Originating Instrument X-Band Scanning ARM Cloud Radar (XSACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Altitude m altitude Altitude above ground level m altitude_agl Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time ) Azimuth angle from true north degree azimuth ( time )

368

Dynamics of isolated-photon plus jet production in pp collisions at sqrt(s)=7 TeV with the ATLAS detector  

E-Print Network (OSTI)

The dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 7 TeV has been studied with the ATLAS detector at the LHC using an integrated luminosity of 37 pb-1. Measurements of isolated-photon plus jet bin-averaged cross sections are presented as functions of photon transverse energy, jet transverse momentum and jet rapidity. In addition, the bin-averaged cross sections as functions of the difference between the azimuthal angles of the photon and the jet, the photon--jet invariant mass and the scattering angle in the photon--jet centre-of-mass frame have been measured. Next-to-leading-order QCD calculations are compared to the measurements and provide a good description of the data, except for the case of the azimuthal opening angle.

ATLAS Collaboration

2013-07-25T23:59:59.000Z

369

Probing the nucleon structure with SIDIS at Jefferson Lab  

Science Conference Proceedings (OSTI)

In recent years, measurements of azimuthal moments of polarized hadronic cross sections in hard processes have emerged as a powerful tool to probe nucleon structure. Many experiments worldwide are currently trying to pin down various effects related to nucleon structure through Semi-Inclusive Deep-Inelastic Scattering (SIDIS). Azimuthal distributions of final-state particles in semi-inclusive deep inelastic scattering, in particular, are sensitive to the orbital motion of quarks and play an important role in the study of Transverse Momentum Dependent parton distribution functions (TMDs) of quarks in the nucleon. The CLAS spectrometer, installed in Hall-B at Jefferson Lab, has collected semi-inclusive data using the CEBAF 6 GeV polarized electron beam on polarized solid NH{sub 3} and ND{sub 3} targets. An overview of these measurements is presented.

Pereira, Sergio Anafalos [INFN-Frascati

2013-01-01T23:59:59.000Z

370

Non-axisymmetric instability of axisymmetric magnetic fields  

E-Print Network (OSTI)

The MHD instabilities can generate complex field topologies even if the initial field configuration is a very simple one. We consider the stability properties of magnetic configurations containing a toroidal and an axial field. In this paper, we concentrate mainly on the behavior of non-axisymmetric perturbations in axisymmetric magnetic configurations. The stability is treated by a linear analysis of ideal MHD equations.In the presence of an axial field, it is shown that the instability can occur for a wide range of the azimuthal wavenumber $m$, and its growth rate increases with increasing $m$. At given $m$, the growth rate is at its maximum for perturbations with the axial wave-vector that makes the Alfv\\'en frequency approximately vanishing. We argue that the instability of magnetic configurations in the ideal MHD can typically be dominated by perturbations with very short azimuthal and axial wavelengths.

Bonanno, Alfio

2008-01-01T23:59:59.000Z

371

Physics of Hall-effect thruster by particle model  

SciTech Connect

A realistic three-dimensional fully kinetic particle simulation of a Hall-effect thruster discharge has been developed. The model consists of a Particle-in-Cell methodology tracking electrons, Xe{sup +} and Xe{sup ++} ions in their selfconsistent electric field. A detailed secondary electron emission from lateral walls is also implemented in addition with electron-atom and electron-ion volume collisions. The model is able to capture the most relevant features of axial, radial and azimuthal behaviors of the start-up transient and steady state phases detecting inverted sheaths and azimuthal modulation in the acceleration region. The model has the potentiality to investigate the driving mechanisms at the origin of the electron anomalous cross-field transport.

Taccogna, Francesco; Minelli, Pierpaolo; Capitelli, Mario; Longo, Savino [Istituto di Metodologie Inorganiche e dei Plasmi (IMIP), CNR, via Amendola 122/D 70126 Bari (Italy); Dipartimento di Chimica, Universita degli Studi di Bari Aldo Moro, via Orabona 4 70126 Bari (Italy)

2012-11-27T23:59:59.000Z

372

Assessment of generic solar thermal systems for large power applications. Volume II. Analysis of thermal energy production costs for systems from 50 to 600 MWt  

SciTech Connect

A comparative analysis of solar thermal concepts that are potentially suitable for development as large process heat systems (50 to 600 MWt) was performed. The concepts considered can be classified into three categories based on the type of solar tracking used by the collector: (1) two-axis tracking, in which concentrators track the sun's motion in both azimuth and altitude; (2) one-axis tracking, in which concentrators track changes in either azimuth or altitude; and (3) non-tracking, in which the concentrators are fixed. Seven generic types of collectors were considered. Conceptual designs developed for the seven systems were based on common assumptions of available technology in the 1990 to 2000 time frame. Costs were estimated on the basis of identical assumptions, ground rules, methodologies, and unit costs of materials and labor applied uniformly to all of the concepts.

Bird, S.P.; Apley, W.J.; Barnhart, J.S.; Brown, D.R.; Drost, M.K.; Fort, J.A.; Garrett-Price, B.A.; Williams, T.A.

1981-06-01T23:59:59.000Z

373

Assessment of generic solar thermal systems for large power applications. Volume II. Analysis of thermal energy production costs for systems from 50 to 600 MWt  

DOE Green Energy (OSTI)

A comparative analysis of solar thermal concepts that are potentially suitable for development as large process heat systems (50 to 600 MWt) was performed. The concepts considered can be classified into three categories based on the type of solar tracking used by the collector: (1) two-axis tracking, in which concentrators track the sun's motion in both azimuth and altitude; (2) one-axis tracking, in which concentrators track changes in either azimuth or altitude; and (3) non-tracking, in which the concentrators are fixed. Seven generic types of collectors were considered. Conceptual designs developed for the seven systems were based on common assumptions of available technology in the 1990 to 2000 time frame. Costs were estimated on the basis of identical assumptions, ground rules, methodologies, and unit costs of materials and labor applied uniformly to all of the concepts.

Bird, S.P.; Apley, W.J.; Barnhart, J.S.; Brown, D.R.; Drost, M.K.; Fort, J.A.; Garrett-Price, B.A.; Williams, T.A.

1981-06-01T23:59:59.000Z

374

Addressing the physics of the ridge by 2- and 3-particle correlations at STAR  

E-Print Network (OSTI)

We present new results on 2-particle azimuthal ($\\Delta\\phi$) correlation relative to event plane and 3-particle pseudorapidity ($\\Delta\\eta$) correlation at mid-rapidity in Au+Au collisions at $\\sqrt{{\\it s}_{NN}}$ = 200 GeV, measured by the STAR experiment. While jet-like correlation is symmetric, ridge is found to be asymmetric when trigger particle azimuth is between in- and out-of-plane. The charge ordering properties between associated and trigger particles are exploited to separate jet-like and ridge contributions in 3-particle $\\Delta\\eta$-$\\Delta\\eta$ correlations. We found that like-sign triplets are dominated by ridge. The separated ridge, while narrow in $\\Delta\\phi$, is extremely broad in $\\Delta\\eta$. The ridge particles are not only uncorrelated to the trigger particle in $\\Delta\\eta$, but also uncorrelated between themselves.

Pawan Kumar Netrakanti; for the STAR Collaboration

2009-07-27T23:59:59.000Z

375

Photon HBT interferometry for non-central heavy-ion collisions  

E-Print Network (OSTI)

Currently, the only known way to obtain experimental information about the space-time structure of a heavy-ion collision is through 2-particle momentum correlations. Azimuthally sensitive HBT interferometry (Hanbury Brown-Twiss intensity interferometry) can complement elliptic flow measurements by constraining the spatial deformation of the source and its time evolution. Performing these measurements on photons allows us to access the fireball evolution at earlier times than with hadrons. Using ideal hydrodynamics to model the space-time evolution of the collision fireball, we explore theoretically various aspects of 2-photon intensity interferometry with transverse momenta up to 2 GeV, in particular the azimuthal angle dependence of the HBT radii in non-central collisions. We highlight the dual nature of thermal photon emission, in both central and non-central collisions, resulting from the superposition of QGP and hadron resonance gas photon production. This signature is present in both the thermal photon s...

Frodermann, Evan

2009-01-01T23:59:59.000Z

376

ARM - Datastreams - dlcal1  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsdlcal1 Datastreamsdlcal1 Documentation Data Quality Plots Citation DOI: 10.5439/1025183 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : DLCAL1 Doppler Lidar - calibration channel 1 Active Dates 2010.10.30 - 2010.12.21 Measurement Categories Aerosols, Cloud Properties Originating Instrument Doppler Lidar (DL) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Backscattered radiation Attenuated backscatter 1/(m sr) attenuated_backscatter ( time, range ) Azimuth relative to true north degrees azimuth ( time ) Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time

377

ARM - Datastreams - xsacrblrhi  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsxsacrblrhi Datastreamsxsacrblrhi Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRBLRHI X-Band Scanning ARM Cloud Radar (XSACR) Boundary Layer RHI Scan Active Dates 2011.09.14 - 2011.10.20 Measurement Categories Cloud Properties Originating Instrument X-Band Scanning ARM Cloud Radar (XSACR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Altitude m altitude Altitude above ground level m altitude_agl Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time ) Azimuth angle from true north degrees azimuth ( time )

378

Solving Potential Scattering Equations without Partial Wave Decomposition  

E-Print Network (OSTI)

Considering two-body integral equations we show how they can be dimensionally reduced by integrating exactly over the azimuthal angle of the intermediate momentum. Numerical solution of the resulting equation is feasible without employing a partial-wave expansion. We illustrate this procedure for the Bethe-Salpeter equation for pion-nucleon scattering and give explicit details for the one-nucleon-exchange term in the potential. Finally, we show how this method can be applied to pion photoproduction from the nucleon with $\\pi N$ rescattering being treated so as to maintain unitarity to first order in the electromagnetic coupling. The procedure for removing the azimuthal angle dependence becomes increasingly complex as the spin of the particles involved increases.

George Caia; Vladimir Pascalutsa; Louis E. Wright

2003-12-08T23:59:59.000Z

379

ELECTRICAL LOAD ANTICIPATOR AND RECORDER  

DOE Patents (OSTI)

A system is described in which an indication of the prevailing energy consumption in an electrical power metering system and a projected power demand for one demand in terval is provided at selected increments of time within the demand interval. Each watt-hour meter in the system is provided with an impulse generator that generates two impulses for each revolution of the meter disc. In each demand interval, for example, one half-hour, of the metering system, the total impulses received from all of the meters are continuously totaled for each 5-minute interval and multiplied by a number from 6 to 1 depending upon which 5- minute interval the impulses were received. This value is added to the total pulses received in the intervals preceding the current 5-minute interval within the half-hour demand interval tc thereby provide an indication of the projected power demand every 5 minutes in the demand interval.

Werme, J.E.

1961-09-01T23:59:59.000Z

380

Measuring and Modeling Fault Density for Plume-Fault Encounter Probability Estimation  

E-Print Network (OSTI)

Sheirer 2007). Figure 2. Oil and gas fields in the vicinity10° strike intervals in oil and gas fields centered within10° strike intervals in oil and gas fields centered within

Jordan, P.D.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

A Dual-Pulse Repetition Frequency Scheme for Mitigating Velocity Ambiguities of the NOAA P-3 Airborne Doppler Radar  

Science Conference Proceedings (OSTI)

To mitigate some of the deleterious effects of the relatively small unambiguous Doppler velocity range (Nyquist interval) of airborne X-band Doppler radars, a technique has been developed to extend this interval. This technique, termed the batch-...

David P. Jorgensen; Tom R. Shepherd; Alan S. Goldstein

2000-05-01T23:59:59.000Z

382

High resolution data acquisition  

DOE Patents (OSTI)

A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock pulse train and analog circuitry for generating a triangular wave synchronously with the pulse train. The triangular wave has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter counts the clock pulse train during the interval to form a gross event interval time. A computer then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

Thornton, G.W.; Fuller, K.R.

1992-12-31T23:59:59.000Z

383

Coordinated inventory models with compensation policy in a three level supply chain  

Science Conference Proceedings (OSTI)

In this paper, we develop inventory models for the three level supply chain (one supplier, one warehouse, and one retailer) and consider the problem of determining the optimal integer multiple n of time interval, time interval between successive ...

Jeong Hun Lee; Il Kyeong Moon

2006-05-01T23:59:59.000Z

384

April 28, 1986 SITE EXCAVATION STUDY  

E-Print Network (OSTI)

is based upon an aerial survey map having contours at five foot vertical intervals. A new topographic survey with contour intervals at one foot may impact this estimate. ANL:ss cc: L. J. Reinsch E. Vanberkum

Kemner, Ken

385

Constraint Reasoning for Differential Models  

Science Conference Proceedings (OSTI)

The basic motivation of this work was the integration of biophysical models within the interval constraints framework for decision support. Comparing the major features of biophysical models with the expressive power of the existing interval constraints ...

Jorge Cruz

2005-05-01T23:59:59.000Z

386

Electric field in 3D gravity with torsion  

E-Print Network (OSTI)

It is shown that in static and spherically symmetric configurations of the system of Maxwell field coupled to 3D gravity with torsion, at least one of the Maxwell field components has to vanish. Restricting our attention to the electric sector of the theory, we find an interesting exact solution, corresponding to the azimuthal electric field. Its geometric structure is to a large extent influenced by the values of two different central charges, associated to the asymptotic AdS structure of spacetime.

M. Blagojevi?; B. Cvetkovi?

2008-04-11T23:59:59.000Z

387

Passive seismic techniques. Quarterly technical progress report, September 1, 1976-November 30, 1976  

DOE Green Energy (OSTI)

The acquisition, generation and analysis of a teleseismic data base for the Imperial Valley are reported. Travel-time data were generated for 176 earthquakes at widely different azimuths and epicentral distances with respect to the 16 seismic stations in the Imperial Valley array (IVA). Several programs for preprocessing this data base, including error analysis routines, were written and applied to the teleseismic travel-time data.

Savino, J.M.; Jordan, T.H.; Lambert, D.G.; Goff, R.C.

1976-12-01T23:59:59.000Z

388

Electron Diamagnetic Effect on Axial Force in an Expanding Plasma: Experiments and Theory  

SciTech Connect

The axial force imparted from a magnetically expanding current-free plasma is directly measured for three different experimental configurations and compared with a two-dimensional fluid theory. The force component solely resulting from the expanding field is directly measured and identified as an axial force produced by the azimuthal current due to an electron diamagnetic drift and the radial component of the magnetic field. The experimentally measured forces are well described by the theory.

Takahashi, Kazunori [Space Plasma, Power and Propulsion Laboratory, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia); Department of Electrical Engineering and Computer Science, Iwate University, Morioka 020-8551 (Japan); Lafleur, Trevor; Charles, Christine; Alexander, Peter; Boswell, Rod W. [Space Plasma, Power and Propulsion Laboratory, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia)

2011-12-02T23:59:59.000Z

389

Pressure limits of an axisymmetric torus  

SciTech Connect

In order to clarify the pressure limit of a toroidal plasma equilibrium in a three-dimensional geometry, an azimuthally symmetric toroidal plasma was considered. In a tokamak-like plasma, the net toroidal current is necessary for a finite ..beta.. plasma equilibrium. If external conductors are used to provide the rotational transform, iota, the plasma pressure is limited to ..beta.. = (iota/2..pi..)/sup 2//2A, where A is the aspect ratio.

Yoshikawa, S.

1986-03-01T23:59:59.000Z

390

Mixtures of Bose gases confined in concentrically coupled annular traps  

SciTech Connect

A two-component Bose-Einstein condensate confined in an axially symmetric potential with two local minima, resembling two concentric annular traps, is investigated. The system shows a number of phase transitions that result from the competition between phase coexistence and radial-azimuthal phase separation. The ground-state phase diagram, as well as the rotational properties, including the (meta)stability of currents in this system, is analyzed.

Malet, F.; Reimann, S. M. [Mathematical Physics, LTH, Lund University, Post Office Box 118, SE-22100 Lund (Sweden); Kavoulakis, G. M. [Technological Education Institute of Crete, Post Office Box 1939, GR-71004, Heraklion (Greece)

2010-01-15T23:59:59.000Z

391

Stabilization of vortex solitons in nonlocal nonlinear media  

SciTech Connect

We study the evolution of vortex solitons in optical media with a nonlocal nonlinear response. We employ a modulation theory for the vortex parameters based on an averaged Lagrangian, and analyze the azimuthal evolution of both the vortex width and diffractive radiation. We describe analytically the physical mechanism for vortex stabilization due to the long-range nonlocal nonlinear response, the effect observed earlier in numerical simulations only.

Minzoni, Antonmaria A. [Fenomenos Nonlineales y Mecanica (FENOMEC), Department of Mathematics and Mechanics, Instituto de Investigacion en Matematicas Aplicadas y Sistemas, Universidad Nacional Autonoma de Mexico, 01000 Mexico D.F. (Mexico); Smyth, Noel F. [School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Edinburgh EH9 3JZ, Scotland (United Kingdom); Worthy, Annette L. [School of Mathematics and Applied Statistics, University of Wollongong, Wollongong NSW 2522 (Australia); Kivshar, Yuri S. [Nonlinear Physics Center, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200 (Australia)

2007-12-15T23:59:59.000Z

392

Solar Position Algorithm for Solar Radiation Applications (Revised)  

DOE Green Energy (OSTI)

This report is a step-by-step procedure for implementing an algorithm to calculate the solar zenith and azimuth angles in the period from the year -2000 to 6000, with uncertainties of ?0.0003/. It is written in a step-by-step format to simplify otherwise complicated steps, with a focus on the sun instead of the planets and stars in general. The algorithm is written in such a way to accommodate solar radiation applications.

Reda, I.; Andreas, A.

2008-01-01T23:59:59.000Z

393

Solar Energy Education. Renewable energy activities for earth science  

DOE Green Energy (OSTI)

A teaching manual is provided to aid teachers in introducing renewable energy topics to earth science students. The main emphasis is placed on solar energy. Activities for the student include a study of the greenhouse effect, solar gain for home heating, measuring solar radiation, and the construction of a model solar still to obtain fresh water. Instructions for the construction of apparatus to demonstrate a solar still, the greenhouse effect and measurement of the altitude and azimuth of the sun are included. (BCS)

Not Available

1980-01-01T23:59:59.000Z

394

Strong directional out-of-plane scattering in multiple ionizing highly charged ion-atom collisions  

SciTech Connect

The azimuthal ([phi][sub r]) and polar angle ([theta][sub r]) scattering of projectiles in coincidence with recoil ions has been studied for 0.53 MeV/u F[sup 8+] + Ne. For high degree of ionization of the target we find the resultant transverse momentum of all electrons emitted into the continuum to increase with the number of ejected electrons and to have a direction mostly not co-planar with the scattering plane.

Gonzalez, A.; Hagmann, S.; Quinteros, T. (Kansas State Univ., Manhattan, KS (United States). J.R. MacDonald Lab.); Kraessig, B. (Freiburg Univ. (Germany). Fakultaet fuer Physik); Koch, R.; Schmidt-Boecking, H. (Frankfurt Univ. (Germany). Inst. fuer Kernphysik); Skutlartz, A. (East Carolina Univ., Greenville, NC (United States))

1990-01-01T23:59:59.000Z

395

Strong directional out-of-plane scattering in multiple ionizing highly charged ion-atom collisions  

SciTech Connect

The azimuthal ({phi}{sub r}) and polar angle ({theta}{sub r}) scattering of projectiles in coincidence with recoil ions has been studied for 0.53 MeV/u F{sup 8+} + Ne. For high degree of ionization of the target we find the resultant transverse momentum of all electrons emitted into the continuum to increase with the number of ejected electrons and to have a direction mostly not co-planar with the scattering plane.

Gonzalez, A.; Hagmann, S.; Quinteros, T. [Kansas State Univ., Manhattan, KS (United States). J.R. MacDonald Lab.; Kraessig, B. [Freiburg Univ. (Germany). Fakultaet fuer Physik; Koch, R.; Schmidt-Boecking, H. [Frankfurt Univ. (Germany). Inst. fuer Kernphysik; Skutlartz, A. [East Carolina Univ., Greenville, NC (United States)

1990-12-31T23:59:59.000Z

396

Solar tracking system  

SciTech Connect

This report describes an automated solar tracking system which is adaptable to most solar collectors which require alignment with the sun's radiation. The system uses partially shaded photovoltaic solar cells to produce error signals for both elevation and azimuth tracking with a high degree of accuracy. An electrical circuit processes the error signals and controls gearmotors to direct the solar collector toward the sun.

Hammons, B.E.

1977-06-01T23:59:59.000Z

397

Anomalies and asymmetries in quark-gluon matter  

SciTech Connect

The manifestations of axial anomaly and related effects in heavy-ion collisions are considered. Special role is played by various asymmetries. The azimuthal correlational asymmetries of neutron pairs at NICA/FAIR energy range may probe the global rotation of strongly interacting matter. The conductivity is related to the angular asymmetries of dilepton pairs. The strong magnetic field generated in heavy-ion collisions leads to the excess of soft dileptons flying predominantly in the scattering plane.

Teryaev, O. V., E-mail: teryaev@theor.jinr.ru [Joint Institute for Nuclear Research (Russian Federation)

2012-06-15T23:59:59.000Z

398

Three-particle coincidence of the long range pseudorapidity correlation in high energy nucleus-nucleus collisions  

E-Print Network (OSTI)

We report the first three-particle coincidence measurement in pseudorapidity ($\\Delta\\eta$) between a high transverse momentum ($p_{\\perp}$) trigger particle and two lower $p_{\\perp}$ associated particles within azimuth $\\mid$$\\Delta\\phi$$\\mid$$trigger particle but also between themselves event-by-event. In addition, the production of the ridge appears to be uncorrelated to the presence of the narrow jet-like component.

STAR Collaboration; B. I. Abelev

2009-12-20T23:59:59.000Z

399

Low Wind Speed Turbine Project Conceptual Design Study: Advanced Independent Pitch Control; July 30, 2002--July 31, 2004 (Revised)  

DOE Green Energy (OSTI)

AES conducted a conceptual study of independent pitch control using inflow angle sensors. The control strategy combined input from turbine states (rotor speed, rotor azimuth, each blade pitch) with inflow angle measurements (each blade angle of attack at station 11 of 15) to derive blade pitch demand signals. The controller reduced loads sufficiently to allow a 10% rotor extension and reduce COE by 6.3%.

Olsen, T.; Lang, E.; Hansen, A.C.; Cheney, M. C.; Quandt, G.; VandenBosche, J.; Meyer, T.

2004-12-01T23:59:59.000Z

400

Generalized parton distributions and Deeply Virtual Compton Scattering on proton at CLAS  

DOE Green Energy (OSTI)

Two measurements of target and beam spin asymmetries for the reaction ep?ep? were performed with CLAS at Jefferson Laboratory. Polarized 5.7 GeV electrons were impinging on a longitudinally polarized ammonia and liquid hydrogen target respectively. These measurements are sensitive to Generalized Parton Distributions. Sizable sin phi azimuthal angular dependences were observed in both experiments, indicating the dominance of leading twist terms and the possibility of extracting combinations of Generalized Parton Distributions on the nucleon.

R. De Masi

2007-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Apparatus for detecting a magnetic anomaly contiguous to remote location by squid gradiometer and magnetometer systems  

DOE Patents (OSTI)

A superconducting quantum interference device (SQUID) magnetic detection apparatus detects magnetic fields, signals, and anomalies at remote locations. Two remotely rotatable SQUID gradiometers may be housed in a cryogenic environment to search for and locate unambiguously magnetic anomalies. The SQUID magnetic detection apparatus can be used to determine the azimuth of a hydrofracture by first flooding the hydrofracture with a ferrofluid to create an artificial magnetic anomaly therein.

Overton, Jr., William C. (Los Alamos, NM); Steyert, Jr., William A. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

402

Apparatus and method for detecting a magnetic anomaly contiguous to remote location by SQUID gradiometer and magnetometer systems  

DOE Patents (OSTI)

A superconducting quantum interference device (SQUID) magnetic detection apparatus detects magnetic fields, signals, and anomalies at remote locations. Two remotely rotatable SQUID gradiometers may be housed in a cryogenic environment to search for and locate unambiguously magnetic anomalies. The SQUID magnetic detection apparatus can be used to determine the azimuth of a hydrofracture by first flooding the hydrofracture with a ferrofluid to create an artificial magnetic anomaly therein.

Overton, W.C. Jr.; Steyert, W.A. Jr.

1981-05-22T23:59:59.000Z

403

Solar Eclipse Monitoring for Solar Energy Applications Using the Solar and Moon Position Algorithms  

DOE Green Energy (OSTI)

This report includes a procedure for implementing an algorithm (described by Jean Meeus) to calculate the moon's zenith angle with uncertainty of +/-0.001 degrees and azimuth angle with uncertainty of +/-0.003 degrees. The step-by-step format presented here simplifies the complicated steps Meeus describes to calculate the Moon's position, and focuses on the Moon instead of the planets and stars. It also introduces some changes to accommodate for solar radiation applications.

Reda, I.

2010-03-01T23:59:59.000Z

404

doi:10.1144/SP327.16 2009; v. 327; p. 371-404Geological Society, London, Special Publications  

E-Print Network (OSTI)

DAmaride­Lufilian margin (the `ANACONDA' fit) throughout the interval 1235­755 Ma according to palaeomag

405

Research on Statistical Methods Project  

Science Conference Proceedings (OSTI)

... Intervals for Linear Regression," Journal of Quality Technology, Vol 26 ... Neutron Depth Profiling Spectra," IEEE Transactions on Nuclear Science, Vol ...

2010-10-04T23:59:59.000Z

406

XLS - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA)

Forecast Volatility Expiry Lower Upper Source: Short-Term Energy Outlook, January 2014. Note: Confidence interval derived from options market ...

407

Effects of pause and QCN on TCP sources High Performance  

E-Print Network (OSTI)

counter and timer) · Pause threshold: 120Kbytes · Pause interval: 96usec #12;5 Scenario: OG Hotspot

Prabhakar, Balaji

408

Trimmed Mean Standard Error  

Science Conference Proceedings (OSTI)

... the sample size. Tukey and Mclaughlin suggest the following confidence interval for the trimmed mean: where alpha is ...

2013-11-27T23:59:59.000Z

409

unknown title  

E-Print Network (OSTI)

asympTest: an R package for performing parametric statistical tests and confidence intervals based on the central limit theorem

J. -f. Coeurjolly; R. Drouilhet; P. Lafaye De Micheaux; J. -f. Robineau

2009-01-01T23:59:59.000Z

410

Physics implications of correlation data from the RHIC and LHC heavy-ion programs  

E-Print Network (OSTI)

Two-dimensional angular correlation data from the STAR experiment at RHIC and from the LHC experiments provide critical information about dynamical processes in relativistic heavy-ion collisions. The principal correlation structures of interest are a broad jet-related peak at small relative azimuth ($\\phi$) extending to large relative pseudorapidity ($\\eta$), the dijet ridge at large relative azimuth, and an independent double ridge on $\\phi$ represented by a quadrupole function. The broad peak at small relative azimuth has been attributed, in large part, to initial-state fluctuations and hydrodynamic flow which produce higher-order harmonics on $\\phi$. That conjecture is challenged in this paper. It is shown that the net effect of additional higher harmonic model elements is to describe small, non-Gaussian (NG) shapes in the broad jet-related peak. The quadrupole correlation, which is also conventionally attributed to hydrodynamic flow, is considered within the Balitsky - Fadin - Kuraev - Lipatov (BFKL) Pomeron framework. Preliminary results using this model for the quadrupole correlation for particle production from 200 GeV $p+p$ collisions are shown to be consistent with recent data from STAR.

R. L. Ray

2013-11-04T23:59:59.000Z

411

Stratorotational instability in MHD Taylor-Couette flows  

E-Print Network (OSTI)

The stability of dissipative Taylor-Couette flows with an axial stable density stratification and a prescribed azimuthal magnetic field is considered. Global nonaxisymmetric solutions of the linearized MHD equations with toroidal magnetic field, axial density stratification and differential rotation are found for both insulating and conducting cylinder walls. Flat rotation laws such as the quasi-Kepler law are unstable against the nonaxisymmetric stratorotational instability (SRI). The influence of a current-free toroidal magnetic field depends on the magnetic Prandtl number Pm: SRI is supported by Pm > 1 and it is suppressed by Pm \\lsim 1. For too flat rotation laws a smooth transition exists to the instability which the toroidal magnetic field produces in combination with the differential rotation. This nonaxisymmetric azimuthal magnetorotational instability (AMRI) has been computed under the presence of an axial density gradient. If the magnetic field between the cylinders is not current-free then also the Tayler instability occurs and the transition from the hydrodynamic SRI to the magnetic Tayler instability proves to be rather complex. Most spectacular is the `ballooning' of the stability domain by the density stratification: already a rather small rotation stabilizes magnetic fields against the Tayler instability. An azimuthal component of the resulting electromotive force only exists for density-stratified flows. The related alpha-effect for magnetic SRI of Kepler rotation appears to be positive for negative d\\rho/dz <0.

G. Ruediger; D. A. Shalybkov

2008-08-05T23:59:59.000Z

412

Bunching instability of rotating relativistic electron layers and coherent synchrotron radiation  

E-Print Network (OSTI)

We study the stability of a collisionless, relativistic, finite-strength, cylindrical layer of charged particles in free space by solving the linearized Vlasov-Maxwell equations and compute the power of the emitted electromagnetic waves. The layer is rotating in an external magnetic field parallel to the layer. This system is of interest to understanding the high brightness temperature of pulsars which cannot be explained by an incoherent radiation mechanism. Coherent synchrotron radiation has also been observed recently in bunch compressors used in particle accelerators. We consider equilibrium layers with a `thermal' energy spread and therefore a non-zero radial thickness. The particles interact with their retarded electromagnetic self-fields. The effect of the betatron oscillations is retained. A short azimuthal wavelength instability is found which causes a modulation of the charge and current densities. The growth rate is found to be an increasing function of the azimuthal wavenumber, a decreasing function of the Lorentz factor, and proportional to the square root of the total number of electrons. We argue that the growth of the unstable perturbation saturates when the trapping frequency of electrons in the wave becomes comparable to the growth rate. Owing to this saturation we can predict the radiation spectrum for a given set of parameters. Our predicted brightness temperatures are proportional to the square of the number of particles and scale by the inverse five-third power of the azimuthal wavenumber which is in rough accord with the observed spectra of radio pulsars.

Bjoern S. Schmekel; Richard V. E. Lovelace; Ira M. Wasserman

2004-09-27T23:59:59.000Z

413

Dissipative Taylor-Couette flows under the influence of helical magnetic fields  

E-Print Network (OSTI)

The linear stability of MHD Taylor-Couette flows in axially unbounded cylinders is considered, for magnetic Prandtl number unity. Magnetic fields varying from purely axial to purely azimuthal are imposed, with a general helical field parameterized by \\beta=B_\\phi/B_z. We map out the transition from the standard MRI for \\beta=0 to the nonaxisymmetric Azimuthal MagnetoRotational Instability (AMRI) for \\beta\\to \\infty. For finite \\beta, positive and negative wave numbers m, corresponding to right and left spirals, are no longer identical. The transition from \\beta=0 to \\beta\\to\\infty includes all the possible forms of MRI with axisymmetric and nonaxisymmetric modes. For the nonaxisymmetric modes, the most unstable mode spirals in the opposite direction to the background field. The standard (\\beta=0) MRI is axisymmetric for weak fields (including the instability with the lowest Reynolds number) but is nonaxisymmetric for stronger fields. If the azimuthal field is due in part to an axial current flowing through th...

Ruediger, G; Schultz, M; Hollerbach, R

2010-01-01T23:59:59.000Z

414

A new method for the spectroscopic identification of stellar non-radial pulsation modes. II. Mode identification of the Delta Scuti star FG Virginis  

E-Print Network (OSTI)

We present a mode identification based on new high-resolution time-series spectra of the non-radially pulsating Delta Scuti star FG~Vir (HD 106384, V = 6.57, A5V). From 2002 February to June a global Delta Scuti Network (DSN) campaign, utilizing high-resolution spectroscopy and simultaneous photometry has been conducted for FG~Vir in order to provide a theoretical pulsation model. In this campaign we have acquired 969 Echelle spectra covering 147 hours at six observatories. The mode identification was carried out by analyzing line profile variations by means of the Fourier parameter fit method, where the observational Fourier parameters across the line are fitted with theoretical values. This method is especially well suited for determining the azimuthal order m of non-radial pulsation modes and thus complementary with the method of Daszynska-Daszkiewicz (2002) which does best at identifying the degree l. 15 frequencies between 9.2 and 33.5 c/d were detected spectroscopically. We determined the azimuthal order m of 12 modes and constrained their harmonic degree l. Only modes of low degree (l <= 4) were detected, most of them having axisymmetric character mainly due to the relatively low projected rotational velocity of FG Vir. The detected non-axisymmetric modes have azimuthal orders between -2 and 1. We derived an inclination of 19 degrees, which implies an equatorial rotational rate of 66 km/s.

W. Zima; D. Wright; J. Bentley; P. L. Cottrell; U. Heiter; P. Mathias; E. Poretti; H. Lehmann; T. J. Montemayor; M. Breger

2006-06-21T23:59:59.000Z

415

myPower Pricing Pilot Final Findings myPower Pricing Pilot Segments  

E-Print Network (OSTI)

Understand how price signals can influence customers' energy usage patterns. Test customers' reaction 319 Residential Rate* RS TOU-CPP (RSP) TOU-CPP (RSP) Equipment Electric interval meter Electric interval meter Electric interval meter Programmable thermostat Two-way communications infrastructure - PLC

416

Process for converting sodium nitrate-containing, caustic liquid radioactive wastes to solid insoluble products  

DOE Patents (OSTI)

A method for converting sodium nitrate-containing, caustic, radioactive wastes to a solid, relatively insoluble, thermally stable form is provided and comprises the steps of reacting powdered aluminum silicate clay, e.g., kaolin, bentonite, dickite, halloysite, pyrophyllite, etc., with the sodium nitrate-containing radioactive wastes which have a caustic concentration of about 3 to 7 M at a temperature of 30.degree. C to 100.degree. C to thereby entrap the dissolved radioactive salts in the aluminosilicate matrix. In one embodiment the sodium nitrate-containing, caustic, radioactive liquid waste, such as neutralized Purex-type waste, or salts or oxide produced by evaporation or calcination of these liquid wastes (e.g., anhydrous salt cake) is converted at a temperature within the range of 30.degree. C to 100.degree. C to the solid mineral form-cancrinite having an approximate chemical formula 2(NaAlSiO.sub.4) .sup.. xSalt.sup.. y H.sub.2 O with x = 0.52 and y = 0.68 when the entrapped salt is NaNO.sub.3. In another embodiment the sodium nitrate-containing, caustic, radioactive liquid is reacted with the powdered aluminum silicate clay at a temperature within the range of 30.degree. C to 100.degree. C, the resulting reaction product is air dried eitheras loose powder or molded shapes (e.g., bricks) and then fired at a temperature of at least 600.degree. C to form the solid mineral form-nepheline which has the approximate chemical formula of NaAlSiO.sub.4. The leach rate of the entrapped radioactive salts with distilled water is reduced essentially to that of the aluminosilicate lattice which is very low, e.g., in the range of 10.sup.-.sup.2 to 10.sup.-.sup.4 g/cm.sup.2 -- day for cancrinite and 10.sup.-.sup.3 to 10.sup.-.sup.5 g/cm.sup.2 -- day for nepheline.

Barney, Gary S. (Richland, WA); Brownell, Lloyd E. (Richland, WA)

1977-01-01T23:59:59.000Z

417

Detecting, Locating, and Characterizing Remote Power Sources  

SciTech Connect

A feasibility study to determine range and back-azimuth detection methods for an isolated generator powering common loads was completed. The study deployed 3-component E and B field sensors with sampling rates of 100 kHz in a low noise test location in Southern California. Scripted power and load cycling was recorded at ranges of 40 meters to 4 km from the generator/load source. Three loads were tested: a 100 meter string of lights, an inverter powering an air blower, and a resistive heater. No E-field or B-field radiated signals were detected at ranges greater than 40 meters with a signal-to-noise ratio greater than one. Large variations in the broadband background electromagnetic noise were observed and may have been responsible for null detections at some measurement locations. At the 40-meter station, a frequency shift upon generator loading was observed for all load types. Harmonics from the detuned generator (operating at 56.7 Hz) could be observed for all load types but were most pronounced for the inverter source. A back-azimuth estimation methodology was applied to detected harmonics with stable and consistent results. For the inverter source, consistent back azimuths to the source were determined for the fundamental and higher detected harmonics up to the 31st. The method was applied to narrow band ''noise'' at 60 Hz and produced bimodal directions that roughly pointed to large population centers. Details of the method are withheld in this report pending a record of invention submittal. Although the generator/load combinations, which utilized wiring that tended to minimize stray signals, cannot yet be detected at large stand-off range without application of noise-filtering methods, the back-azimuth method appears promising and should be applied to other source types and frequency ranges where an E and B field can be detected. A record of invention describing this new back-azimuth method has been submitted to the Intellectual Property Law Group.

Harben, P; Carrigan, C; Kirkendall, B; Simons, D

2005-02-10T23:59:59.000Z

418

ARM - Facility News Article  

NLE Websites -- All DOE Office Websites (Extended Search)

User Facility Improvements Continue at North Slope of Alaska Locale User Facility Improvements Continue at North Slope of Alaska Locale Bookmark and Share The "skydeck" at Barrow shows how the instrument platforms can get very crowded during peak experimental periods. The "skydeck" at Barrow shows how the instrument platforms can get very crowded during peak experimental periods. Two things are critical for conducting scientific research: adequate equipment and power. This is especially true in the Arctic, where average winter temperatures hover around -30 degrees Celsius, and access to additional resources is limited. After experiencing crowded working conditions during complex field campaigns last year, followed by several power outages this past winter, operations staff at the ARM Climate Research Facility's North Slope of Alaska (NSA) locale began implementing

419

arm_poster_eitzen.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

Spearman Rank Correlations Between Boundary-layer Cloud Properties Spearman Rank Correlations Between Boundary-layer Cloud Properties Zachary A. Eitzen, SSAI and Kuan-Man Xu, NASA-LaRC 1. Cloud Object Data The cloud object data were taken from CERES-TRMM, over Jan-Aug 1998. Each boundary-layer cloud object is a contiguous region of CERES footprints that have cloud tops below 3 km, and a cloud fraction of: 99-100% (stratus), 40- 99% (stratocumulus), or 10-40% (shallow cumulus). The cloud objects in this work were all observed over the ocean, and within 30 degrees of the Equator. 2. Joint PDFs and Correlations We are not only interested in 1-D distributions of cloud properties (see Xu et al. 2007), but also how they change with one another. One way to examine this is with 2-D (joint) PDFs. However, with a large number of cloud properties, a

420

Electron Microscopy Center  

NLE Websites -- All DOE Office Websites (Extended Search)

CM30T TEM CM30T TEM Instrument capabilities: Instrument specifications: Accelerating voltages: 100-300 kV LaB6 emitter Resolution (at 300 kV): ~ 0.25 nm point; ~ 0.14 nm line Minimum probe size: ~ 9 nm Operating modes: CTEM, CBED, SAED, light element XEDS CCD camera: 1 Mp, 14 bits, AVI capture possible at 15 fps Specimen holders: Double Tilt (+/- 60 degrees alpha, +/- 30 degrees beta): with Be cup for XEDS liquid nitrogen cooled (96 K) with Be cup heating (1270 K) Tilt/rotate (+/- 60 degrees alpha, rotation 360 degrees) Single Tilt (+/- 60 degrees alpha) Typical experiments (examples): Quantitative XEDS Morphological and diffraction contrast studies of defects In situ heating & cooling studies Electron crystallography Weak beam studies of defects This page can be downloaded here as an Adobe PDF file.

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421

City of San Jose - Solar Access Design Guidelines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

City of San Jose - Solar Access Design Guidelines City of San Jose - Solar Access Design Guidelines City of San Jose - Solar Access Design Guidelines < Back Eligibility Construction Residential Savings Category Heating & Cooling Commercial Heating & Cooling Solar Heating Buying & Making Electricity Water Heating Program Info State California Program Type Solar/Wind Access Policy Provider City of San Jose The San Jose Environmental Services Department has developed voluntary guidelines to encourage solar orientation in new construction. These Solar Access Design Guidelines specify that the long axis of new dwellings should face within 30 degrees west and 45 degrees east of true south. Because houses in a subdivision usually face the street, planners in San Jose found that the easiest way to achieve solar orientation was to orient the streets

422

Radiation Dry Bias in the TWP-ICE Radiosonde Soundings Solar Zenith Angle Correction Factor  

NLE Websites -- All DOE Office Websites (Extended Search)

Radiation Dry Bias in the TWP-ICE Radiosonde Soundings Radiation Dry Bias in the TWP-ICE Radiosonde Soundings Solar Zenith Angle Correction Factor Figure 3: Ratio of MWR TCWV to radiosonde derived TCWV, and the solar zenith angle at the radiosonde launch time (black dots). The dry bias observed in sonde TCWV values is mainly attributable to a dry RH bias near the surface The red dots show the 1000 hPa RH correction factors suggested by Voemel et al for sondes launched near noon (10-30 degree solar zenith angle), and at night time (90 degree zenith angle). The green line shows a modified RH correction factor which is a function of the solar zenith angle. ● During the day-time, the TCWV bias is significantly smaller when the zenith angle correction is applied than when no correction, or only the Crad and Ccal corrections are applied.

423

Electron Microscopy Center  

NLE Websites -- All DOE Office Websites (Extended Search)

FEI Tecnai F20ST TEM/STEM FEI Tecnai F20ST TEM/STEM Instrument capabilities: Instrument specifications: Accelerating voltages: 80-200 kV Schottky FEG emitter Resolution (at 200 kV): ~0.24 nm point; ~0.1 nm line; probe size ~0.2-1 nm Operating modes: CTEM, STEM (BF/ADF, HAADF), CBED, SAED, light element XEDS, EELS, spectrum imaging, energy-filtered imaging (EFI), Lorentz magnetic imaging (LMI), electron holographic imaging (EHI), other computationally-mediated modes. On-axis CCD camera: 16 Mp, 16 bits, 61x61 mm chip size. EMC-owned specimen holders: Double Tilt (+/- 40 degrees alpha, +/- 30 degrees beta): with Be cup for XEDS liquid nitrogen cooled (96 K) with Be cup heating (1270 K) In-plane magnetic field (tilt +/- 40 degrees alpha) Liquid He cooled (tilt +/- 40 degrees alpha, rotate 360 degrees)

424

Critical Point Symmetries in Nuclei  

E-Print Network (OSTI)

Critical Point Symmetries (CPS) appear in regions of the nuclear chart where a rapid change from one symmetry to another is observed. The first CPSs, introduced by F. Iachello, were E(5), which corresponds to the transition from vibrational [U(5)] to gamma-unstable [O(6)] behaviour, and X(5), which represents the change from vibrational [U(5)] to prolate axially deformed [SU(3)] shapes. These CPSs have been obtained as special solutions of the Bohr collective Hamiltonian. More recent special solutions of the same Hamiltonian, to be described here, include Z(5) and Z(4), which correspond to maximally triaxial shapes (the latter with ``frozen'' gamma=30 degrees), as well as X(3), which corresponds to prolate shapes with ``frozen'' gamma=0. CPSs have the advantage of providing predictions which are parameter free (up to overall scale factors) and compare well to experiment. However, their mathematical structure [with the exception of E(5)] needs to be clarified.

Bonatsos, D; Petrellis, D; Terziev, P A; Yigitoglu, I; Bonatsos, Dennis

2006-01-01T23:59:59.000Z

425

Load attenuating passively adaptive wind turbine blade  

DOE Patents (OSTI)

A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.

Veers, Paul S. (Albuquerque, NM); Lobitz, Donald W. (Albuquerque, NM)

2003-01-01T23:59:59.000Z

426

Feasibility Study of Economics and Performance of Solar Photovoltaics at Massachusetts Military Reservation. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

This report presents the results of an assessment of the technical and economic feasibility of deploying photovoltaics (PV) systems on a superfund site located within the Massachusetts Military Reservation (MMR). The site was assessed for possible PV installations. The cost, performance, and site impacts of different PV options were estimated. The economics of the potential systems were analyzed using an electric rate of $0.17/kWh and incentives offered in the State of Massachusetts, such as the solar renewable energy credits. According to calculations, MMR can place 8 MW of ballast-weighted, ground-mounted PV systems on the crowns of the three landfill caps and the borrow pit with the PV modules tilted at 30 degrees.

Stafford, B.; Robichaud, R.; Mosey, G.

2011-07-01T23:59:59.000Z

427

A high-recycle divertor for ITER (International Thermonuclear Experimental Reactor)  

SciTech Connect

A coupled one-dimensional (axial/radial) edge-plasma model (SOLAR) has been used to investigate tradeoffs between collector-plate and edge-plasma conditions in a doublenull, open, high-recycle divertor (HRD) for a preliminary International Thermonuclear Experimental Reactor (ITER) design. A steady-state HRD produces in attractive high-density edge plasma (5 /times/ 10/sup 19/m/sup /minus/3/) with sufficiently low plasma temperature (10-20eV) at a tungsten plat that the sheath-accelerated ions are below sputtering threshold energies. Manageable plate heat fluxes (3-6 MW/m/sup 2/) are achieved by positioning the plate poloidal cross section at a minimum angle of 15-30/degree/ with respect to flux surfaces. 6 refs., 9 figs.

Werley, K.A.; Bathke, C.G.

1988-01-01T23:59:59.000Z

428

THE MILKY WAY'S CIRCULAR-VELOCITY CURVE BETWEEN 4 AND 14 kpc FROM APOGEE DATA  

Science Conference Proceedings (OSTI)

We measure the Milky Way's rotation curve over the Galactocentric range 4 kpc {approx}data from the Apache Point Observatory Galactic Evolution Experiment. We model the line-of-sight velocities of 3365 stars in 14 fields with b = 0 Degree-Sign between 30 Degree-Sign {99 % confidence. We find an offset between the Sun's rotational velocity and the local circular velocity of 26 {+-} 3 km s{sup -1}, which is larger than the locally measured solar motion of 12 km s{sup -1}. This larger offset reconciles our value for V{sub c} with recent claims that V{sub c} {approx}> 240 km s{sup -1}. Combining our results with other data, we find that the Milky Way's dark-halo mass within the virial radius is {approx}8 Multiplication-Sign 10{sup 11} M {sub Sun }.

Bovy, Jo [Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540 (United States); Allende Prieto, Carlos; Meszaros, Szabolcs [Instituto de Astrofisica de Canarias (IAC), E-38200 La Laguna, Tenerife (Spain); Beers, Timothy C. [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Bizyaev, Dmitry; Ebelke, Garrett L.; Malanushenko, Elena; Malanushenko, Viktor [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States); Da Costa, Luiz N.; Girardi, Leo; Maia, Marcio A. G. [Laboratorio Interinstitucional de e-Astronomia-LIneA, Rua Gal. Jose Cristino 77, Rio de Janeiro, RJ 20921-400 (Brazil); Cunha, Katia [Observatorio Nacional, Rio de Janeiro, RJ 20921-400 (Brazil); Eisenstein, Daniel J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS 20, Cambridge, MA 02138 (United States); Frinchaboy, Peter M. [Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129 (United States); Garcia Perez, Ana Elia; Hearty, Fred R.; Majewski, Steven R.; Nidever, David L. [Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States); Hogg, David W. [Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003 (United States); Holtzman, Jon, E-mail: bovy@ias.edu [Department of Astronomy, New Mexico State University, Las Cruces, NM 88003 (United States); and others

2012-11-10T23:59:59.000Z

429

Radiation-cooled Dew Water Condensers Studied by Computational Fluid Dynamic (CFD)  

E-Print Network (OSTI)

Harvesting condensed atmospheric vapour as dew water can be an alternative or complementary potable water resource in specific arid or insular areas. Such radiation-cooled condensing devices use already existing flat surfaces (roofs) or innovative structures with more complex shapes to enhance the dew yield. The Computational Fluid Dynamic - CFD - software PHOENICS has been programmed and applied to such radiation cooled condensers. For this purpose, the sky radiation is previously integrated and averaged for each structure. The radiative balance is then included in the CFD simulation tool to compare the efficiency of the different structures under various meteorological parameters, for complex or simple shapes and at various scales. It has been used to precise different structures before construction. (1) a 7.32 m^2 funnel shape was studied; a 30 degree tilted angle (60 degree cone half-angle) was computed to be the best compromise for funnel cooling. Compared to a 1 m^2 flat condenser, the cooling efficienc...

Clus, O; Muselli, M; Nikolayev, Vadim; Sharan, Girja; Beysens, D

2007-01-01T23:59:59.000Z

430

Microwave Dielectric Heating of Drops in Microfluidic Devices  

E-Print Network (OSTI)

We present a technique to locally and rapidly heat water drops in microfluidic devices with microwave dielectric heating. Water absorbs microwave power more efficiently than polymers, glass, and oils due to its permanent molecular dipole moment that has a large dielectric loss at GHz frequencies. The relevant heat capacity of the system is a single thermally isolated picoliter drop of water and this enables very fast thermal cycling. We demonstrate microwave dielectric heating in a microfluidic device that integrates a flow-focusing drop maker, drop splitters, and metal electrodes to locally deliver microwave power from an inexpensive, commercially available 3.0 GHz source and amplifier. The temperature of the drops is measured by observing the temperature dependent fluorescence intensity of cadmium selenide nanocrystals suspended in the water drops. We demonstrate characteristic heating times as short as 15 ms to steady-state temperatures as large as 30 degrees C above the base temperature of the microfluidi...

Issadore, David; Brown, Keith A; Sandberg, Lori; Weitz, David; Westervelt, Robert M

2009-01-01T23:59:59.000Z

431

Ag on Si(111) from basic science to application  

SciTech Connect

In our work we revisit Ag and Au adsorbates on Si(111)-7x7, as well as experiment with a ternary system of Pentacene, Ag and Si(111). Of particular interest to us is the Si(111)-({radical}3x{radical}3)R30{degree}–Ag (Ag-Si-{radical}3 hereafter). In this thesis I systematically e plore effects of Ag deposition on the Ag-Si-{radical}3 at different temperatures, film thicknesses and deposition fluxes. The generated insight of the Ag system on the Si(111) is then applied to generate novel methods of nanostructuring and nanowire growth. I then extend our expertise to the Au system on the Ag-Si(111) to gain insight into Au-Si eutectic silicide formation. Finally we explore behavior and growth modes of an organic molecule on the Ag-Si interface.

Belianinov, Aleksey

2012-04-04T23:59:59.000Z

432

Statistical cloud coverage as a function of cloud optical thickness  

Science Conference Proceedings (OSTI)

The time-averaged, daylight fractional statistical cloud coverages as a function of cloud optical thickness and selected values of cloud transmission were determined for various geographic areas using D1 data from the International Satellite Cloud Climatology Project (ISCCP). The regions of interest chosen for this report are: global earth, global sea, global land, global coast, and the six 30{degree}-latitude bands over sea, over land, and over coast with longitude 0{degree}--360{degree}. This statistical information is deduced from data determined from satellite measurements of terrestrial, atmospheric and cloud properties by the International Satellite Cloud Climatology Project. In particular the results are based on the ISCCP D1 data base.

Brower, K.L.

1998-07-01T23:59:59.000Z

433

Abundance analysis of planetary host stars  

E-Print Network (OSTI)

We present atmospheric parameters and Fe abundances derived for the majority of dwarf stars (north of -30 degrees declination) which are up to now known to host extrasolar planets. High-resolution spectra have been obtained with the Sandiford Echelle spectrograph on the 2.1m telescope at the University of Texas McDonald Observatory. We have used the same model atmospheres, atomic data and equivalent width modeling program for the analysis of all stars. Abundances have been derived differentially to the Sun, using a solar spectrum obtained with Callisto as the reflector with the same instrumentation. A similar analysis has been performed for a sample of stars for which radial velocity data exclude the presence of a close-in giant planetary companion. The results are compared to the recent studies found in the literature.

U. Heiter; R. E. Luck

2002-09-27T23:59:59.000Z

434

Investigating the Influence of the Added Mass Effect to Marine Hydrokinetic Horizontal-Axis Turbines Using a General Dynamic Wake Wind Turbine Code: Preprint  

DOE Green Energy (OSTI)

This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. It summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and the new added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30 degrees of yaw.

Maniaci, D. C.; Li, Y.

2012-04-01T23:59:59.000Z

435

Method and apparatus for water jet drilling of rock  

DOE Patents (OSTI)

Rock drilling method and apparatus utilizing high pressure water jets for drilling holes of relatively small diameter at speeds significantly greater than that attainable with existing drilling tools. Greatly increased drilling rates are attained due to jet nozzle geometry and speed of rotation. The jet nozzle design has two orifices, one pointing axially ahead in the direction of travel and the second inclined at an angle of approximately 30.degree. from the axis. The two orifices have diameters in the ratio of approximately 1:2. Liquid jet velocities in excess of 1,000 ft/sec are used, and the nozzle is rotated at speeds up to 1,000 rpm and higher.

Summers, David A. (Rolla, MO); Mazurkiewicz, Marian (Wroclaw, PL); Bushnell, Dwight J. (Corvallis, OR); Blaine, James (Rolla, MO)

1978-01-01T23:59:59.000Z

436

Simulation of High-Harmonic Fast-Wave Heating on the National Spherical Tokamak Experiment  

SciTech Connect

Images associated with radio-frequency heating of low-confinement mode plasmas in the National Spherical Tokamak Experiment, as calculated by computer simulation, are presented. The AORSA code has been extended to simulate the whole antenna-to-plasma heating system by including both the kinetic physics of the well-confined core plasma and a poorly confined scrape-off plasma and vacuum vessel structure. The images presented show the 3-D electric wave field amplitude for various antenna phasings. Visualization of the simulation results in 3-D makes clear that -30 degrees phasing excites kilo-volt per meter coaxial standing modes in the scrape-off plasma and shows magnetic-field-aligned whispering-gallery type modes localized to the plasma edge.

Green, David L [ORNL; Jaeger, Erwin Frederick [ORNL; Chen, Guangye [ORNL; Berry, Lee A [ORNL; Pugmire, Dave [ORNL; Canik, John [ORNL; Ryan, Philip Michael [ORNL

2011-01-01T23:59:59.000Z

437

Geothermal resources of Montana  

DOE Green Energy (OSTI)

The Montana Bureau of Mines and Geology has updated its inventory of low and moderate temperature resources for the state and has assisted the Oregon Institute of Technology - GeoHeat Center and the University of Utah Research Institute in prioritizing and collocating important geothermal resource areas. The database compiled for this assessment contains information on location, flow, water chemistry, and estimated reservoir temperatures for 267 geothermal well and springs in Montana. For this assessment, the minimum temperature for low-temperature resource is defined as 10{degree} C above the mean annual air temperature at the surface. The maximum temperature for a moderate-temperature resource is defined as greater than 50{degree} C. Approximately 12% of the wells and springs in the database have temperatures above 50{degree} C, 17% are between 30{degree} and 50{degree} C, 29% are between 20{degree} and 30{degree}C, and 42% are between 10{degree} and 20{degree} C. Low and moderate temperature wells and springs can be found in nearly all areas of Montana, but most are in the western third of the state. Information sources for the current database include the MBMG Ground Water Information Center, the USGS statewide database, the USGS GEOTHERM database, and new information collected as part of this program. Five areas of Montana were identified for consideration in future investigations of geothermal development. The areas identified are those near Bozeman, Ennis, Butte, Boulder, and Camas Prairie. These areas were chosen based on the potential of the resource and its proximity to population centers.

Metesh, J.

1994-06-01T23:59:59.000Z

438

Buffered coscheduling for parallel programming and enhanced fault tolerance  

DOE Patents (OSTI)

A computer implemented method schedules processor jobs on a network of parallel machine processors or distributed system processors. Control information communications generated by each process performed by each processor during a defined time interval is accumulated in buffers, where adjacent time intervals are separated by strobe intervals for a global exchange of control information. A global exchange of the control information communications at the end of each defined time interval is performed during an intervening strobe interval so that each processor is informed by all of the other processors of the number of incoming jobs to be received by each processor in a subsequent time interval. The buffered coscheduling method of this invention also enhances the fault tolerance of a network of parallel machine processors or distributed system processors

Petrini, Fabrizio (Los Alamos, NM); Feng, Wu-chun (Los Alamos, NM)

2006-01-31T23:59:59.000Z

439

The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory  

Science Conference Proceedings (OSTI)

We present a comprehensive study of the influence of the geomagnetic field on the energy estimation of extensive air showers with a zenith angle smaller than 60{sup o}, detected at the Pierre Auger Observatory. The geomagnetic field induces an azimuthal modulation of the estimated energy of cosmic rays up to the {approx} 2% level at large zenith angles. We present a method to account for this modulation of the reconstructed energy. We analyse the effect of the modulation on large scale anisotropy searches in the arrival direction distributions of cosmic rays. At a given energy, the geomagnetic effect is shown to induce a pseudo-dipolar pattern at the percent level in the declination distribution that needs to be accounted for. In this work, we have identified and quantified a systematic uncertainty affecting the energy determination of cosmic rays detected by the surface detector array of the Pierre Auger Observatory. This systematic uncertainty, induced by the influence of the geomagnetic field on the shower development, has a strength which depends on both the zenith and the azimuthal angles. Consequently, we have shown that it induces distortions of the estimated cosmic ray event rate at a given energy at the percent level in both the azimuthal and the declination distributions, the latter of which mimics an almost dipolar pattern. We have also shown that the induced distortions are already at the level of the statistical uncertainties for a number of events N {approx_equal} 32 000 (we note that the full Auger surface detector array collects about 6500 events per year with energies above 3 EeV). Accounting for these effects is thus essential with regard to the correct interpretation of large scale anisotropy measurements taking explicitly profit from the declination distribution.

Abreu, P.; /Lisbon, IST; Aglietta, M.; /IFSI, Turin; Ahn, E.J.; /Fermilab; Albuquerque, I.F.M.; /Sao Paulo U.; Allard, D.; /APC, Paris; Allekotte, I.; /Centro Atomico Bariloche; Allen, J.; /New York U.; Allison, P.; /Ohio State U.; Alvarez Castillo, J.; /Mexico U., ICN; Alvarez-Muniz, J.; /Santiago de Compostela U.; Ambrosio, M.; /Naples U. /INFN, Naples /Nijmegen U., IMAPP

2011-11-01T23:59:59.000Z

440

A comprehensive study of fracture patterns and densities in the Geysers geothermal reservoir using microearthquake shear-wave splitting tomography [Quarterly progress report 06/16/1998 - 09/15/1998  

DOE Green Energy (OSTI)

We completed the process of locating events and identifying shear-wave splitting in the mammoth area. A total of 2250 split shear wave observations were recorded in the four month period that our network was in place. Fast polarization direction map in Figure 1 shows that most of the stations in the mammoth area display consistent direction throughout the main field, between 300{degree} azimuth to 0{degree} azimuth. Some exemptions to the consistent crack alignment (fast polarization direction) can be seen in station M19, and some stations display inconsistent trend as can be observed in stations M25, M18, and M07. It is possible that station M19 was misaligned during installment. Figure 2 shows the cumulative rose diagram for all observations with a clear preferred direction. Figure 3 also shows that most of the observations of fast split shear wave are in the same direction and that those observation are distributed throughout the target area. If we treat measurements of polarization direction as a statistical process, same as deep of layer measurement, we can say that in the small area of the station we have aligned cracks. Figures 4 and 5 show results of the crack density inversion assuming regional crack azimuth of 340{degree}. Almost 2000 raypaths were used to perform this tomographic inversion. There is weak dependency of the results on the regional crack direction, but the main areas of high and low crack density are the same. The changes are mainly in the size of the anomalies. Since the amplitudes of those anomalies depend mainly on the damping parameter we use in the inversion, exact regional crack direction is not a critical parameter of the inversion. The map in figure 4 and cross-sections in Figure 5 show two areas of high crack density: one northeast of the Casa Diablo area at depth of 1 to 3 km, and one near the Mammoth airport and station 9 at depth of 2 to 3 km.

Malin, P.E.; Shalev, E.

1999-03-26T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

A comprehensive study of fracture patterns and densities in the Geysers geothermal reservoir using microearthquake shear-wave splitting tomography. [Quarterly progress report 03/16/1998 - 06/15/1998  

DOE Green Energy (OSTI)

We completed the process of identifying shear-wave splitting in the Geyser area. A total of 2700 observations were recorded with about 1700 observations from the 1988 data and about 1000 observations from 1994. Fast polarization direction map in Figure 1 shows that most of the stations in the Geyser area display consistent direction throughout the main field, between 0{degree} azimuth to 40{degree} azimuth. Some exemptions to the consistent crack alignment (fast polarization direction) can be seen in stations 9 and station 3, and also in stations 13 and 14 outside the field. Since the stations are in boreholes it is possible that some of the station orientations, calculated using P-wave arrivals from located events, are erroneous. If we treat measurements of polarization direction as a statistical process, same as deep of layer measurement, we can say that in the small area of the station we have aligned cracks. Figures 2 and 3 show results of the crack density inversion assuming regional crack azimuth of 20{degree}. Almost 2400 raypaths were used to perform this tomographic inversion. There is weak dependency of the results on the regional crack direction, but the main areas of high and low crack density are the same. The changes are mainly in the size of the anomalies. Since the amplitudes of those anomalies depend mainly on the damping parameter we use in the inversion, exact regional crack direction is not a critical parameter of the inversion. The map in figure 2 and cross-sections in Figure 3 show two areas of high crack density at the top 1 km one at station 8 and the other between stations 6 and 5. At greater depth of 1 to 2 km those two area converge to one high crack density anomaly between stations 3, 4, 11, and 10.

Malin, P.E.; Shalev, E.

1999-03-17T23:59:59.000Z

442

Bayesian inference for orbital eccentricities  

E-Print Network (OSTI)

Highest posterior density (HPD) intervals are derived for the true eccentricities of spectroscopic binaries with measured values e near 0. This is achieved by adopting an informative prior representing orbital decay due to tidal dissipation. These HPD intervals yield upper limits when e is below the detection threshold e_th and seamlessly transform to upper and lower bounds when e > e_th. Sampling experiments confirm the validity of the HPD intervals.

Lucy, L B

2012-01-01T23:59:59.000Z

443

Performance monitoring for new phase dynamic optimization of instruction dispatch cluster configuration  

DOE Patents (OSTI)

In a processor having multiple clusters which operate in parallel, the number of clusters in use can be varied dynamically. At the start of each program phase, the configuration option for an interval is run to determine the optimal configuration, which is used until the next phase change is detected. The optimum instruction interval is determined by starting with a minimum interval and doubling it until a low stability factor is reached.

Balasubramonian, Rajeev (Sandy, UT); Dwarkadas, Sandhya (Rochester, NY); Albonesi, David (Ithaca, NY)

2012-01-24T23:59:59.000Z

444

A differential rotation driven dynamo in a stably stratified star  

E-Print Network (OSTI)

We present numerical simulations of a self-sustaining magnetic field in a differentially rotating non-convective stellar interior. A weak initial field is wound up by the differential rotation; the resulting azimuthal field becomes unstable and produces a new meridional field component, which is then wound up anew, thus completing the `dynamo loop'. This effect is observed both with and without a stable stratification. A self-sustained field is actually obtained more easily in the presence of a stable stratification. The results confirm the analytical expectations of the role of Tayler instability.

J. Braithwaite; H. C. Spruit

2005-09-22T23:59:59.000Z

445

Beam-helicity asymmetry in associated electroproduction of real photons $ep \\to e??N$ in the $?$-resonance region  

E-Print Network (OSTI)

The beam-helicity asymmetry in associated electroproduction of real photons, $ep\\to e\\gamma \\pi N$, in the $\\Delta$(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, $ep\\to e\\gamma \\pi^0 p$ and $ep\\to e\\gamma \\pi^+ n$, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.

The HERMES Collaboration; A. Airapetian; N. Akopov; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetisyan; H. P. Blok; H. Böttcher; A. Borissov; J. Bowles; I. Brodski; V. Bryzgalov; J. Burns; G. P. Capitani; E. Cisbani; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; W. Deconinck; R. De Leo; E. De Sanctis; M. Diefenthaler; P. Di Nezza; M. Düren; M. Ehrenfried; G. Elbakian; F. Ellinghaus; E. Etzelmüller; R. Fabbri; S. Frullani; G. Gapienko; V. Gapienko; J. Garay García; F. Garibaldi; G. Gavrilov; V. Gharibyan; F. Giordano; S. Gliske; M. Hartig; D. Hasch; Y. Holler; I. Hristova; A. Ivanilov; H. E. Jackson; S. Joosten; R. Kaiser; G. Karyan; T. Keri; E. Kinney; A. Kisselev; V. Korotkov; V. Kozlov; P. Kravchenko; V. G. Krivokhijine; L. Lagamba; L. Lapikás; I. Lehmann; P. Lenisa; W. Lorenzon; X. -G. Lu; B. -Q. Ma; D. Mahon; N. C. R. Makins; S. I. Manaenkov; Y. Mao; B. Marianski; H. Marukyan; C. A. Miller; Y. Miyachi; A. Movsisyan; V. Muccifora; M. Murray; A. Mussgiller; Y. Naryshkin; A. Nass; M. Negodaev; W. -D. Nowak; L. L. Pappalardo; R. Perez-Benito; A. Petrosyan; P. E. Reimer; A. R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; J. Rubin; D. Ryckbosch; Y. Salomatin; A. Schäfer; G. Schnell; B. Seitz; T. -A. Shibata; M. Stahl; M. Statera; E. Steffens; J. J. M. Steijger; J. Stewart; F. Stinzing; S. Taroian; A. Terkulov; R. Truty; A. Trzcinski; M. Tytgat; Y. Van Haarlem; C. Van Hulse; V. Vikhrov; I. Vilardi; S. Wang; S. Yaschenko; Z. Ye; S. Yen; V. Zagrebelnyy; B. Zihlmann; P. Zupranski

2013-10-18T23:59:59.000Z

446

A reduced Blade-Vortex Interaction rotor  

E-Print Network (OSTI)

This research work aims at mapping the BVI azimuthal locations using a model rotor. A model rotor was first developed. An experimental investigation was then carried out to determine the possible BVI locations. The results of the mapping are presented. A qualitative discussion about the nature of the pressure signals obtained is presented. An attempt is made to reduce the BVI strengths using an innovative blade tip device. The results for the rotor with the tip device installed are compared with the results obtained without the tip device installed. The comparisons show the tip device to be fairly effective in reducing the strength of the BVI.

Mani, Somnath

1996-01-01T23:59:59.000Z

447

Piping inspection instrument carriage  

DOE Patents (OSTI)

This invention, an instrument carriage for inspection of piping, comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, an instrumentation arm carried by a shaft system running from front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including, an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360[degrees] about its axis.

Hapstack, M.; Talarek, T.R.; Zollinger, W.T.; Heckendorn, F.M. II; Park, L.R.

1991-01-01T23:59:59.000Z

448

Piping inspection instrument carriage  

DOE Patents (OSTI)

This invention, an instrument carriage for inspection of piping, comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, an instrumentation arm carried by a shaft system running from front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including, an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360{degrees} about its axis.

Hapstack, M.; Talarek, T.R.; Zollinger, W.T.; Heckendorn, F.M. II; Park, L.R.

1991-12-31T23:59:59.000Z

449

Method of growing films by flame synthesis using a stagnation-flow reactor  

DOE Patents (OSTI)

A method is described for stabilizing a strained flame in a stagnation flow reactor. By causing a highly strained flame to be divided into a large number of equal size segments it is possible to stablize a highly strained flame that is on the verge of extinction, thereby providing for higher film growth rates. The flame stabilizer is an annular ring mounted coaxially and coplanar with the substrate upon which the film is growing and having a number of vertical pillars mounted on the top surface, thereby increasing the number of azimuthal nodes into which the flame is divided and preserving an axisymmetric structure necessary for stability. 5 figs.

Hahn, D.W.; Edwards, C.F.

1998-11-24T23:59:59.000Z

450

Wave-Driven Rotation In Centrifugal Mirrors  

SciTech Connect

Centrifugal mirrors use supersonic rotation to provide axial confinement and enhanced stability. Usually the rotation is produced using electrodes, but these electrodes have limited the rotation to the Alfven critical ionization velocity, which is too slow to be useful for fusion. Instead, the rotation could be produced using radio frequency waves. A fixed azimuthal ripple is a simple and efficient wave that could produce rotation by harnessing alpha particle energy. This is an extension of the alpha channeling effect. The alpha particle power and efficiency in a simulated devices is sufficient to produce rotation without external energy input. By eliminating the need for electrodes, this opens new opportunities for centrifugal traps.

Abraham J. Fetterman and Nathaniel J. Fisch

2011-03-28T23:59:59.000Z

451

Photon decay in strong magnetic field in heavy-ion collisions  

E-Print Network (OSTI)

We calculate the photon pair production rate in strong magnetic field created in off-central heavy-ion collisions. Photon decay leads to depletion of the photon yield by a few percent at RHIC and by as much as 20% at the LHC. It also generates a substantial azimuthal asymmetry ("elliptic flow") of the final photon distribution. We estimate v_2~2% at RHIC and v_2~14% at LHC. Photon decay measurements is an important tool for studying the magnetic fields in early stages of heavy-ion collisions.

Tuchin, Kirill

2010-01-01T23:59:59.000Z

452

Microwave electron cyclotron electron resonance (ECR) ion source with a large, uniformly distributed, axially symmetric, ECR plasma volume  

DOE Patents (OSTI)

An electron cyclotron resonance (ECR) ion source includes a primary mirror coil disposed coaxially around a vacuum vessel in which a plasma is induced and introducing a solenoidal ECR-producing field throughout the length of the vacuum vessel. Radial plasma confinement is provided by a multi-cusp, multi-polar permanent magnet array disposed azimuthally around the vessel and within the primary mirror coil. Axial confinement is provided either by multi-cusp permanent magnets at the opposite axial ends of the vessel, or by secondary mirror coils disposed on opposite sides of the primary coil.

Alton, Gerald D. (Kingston, TN)

1996-01-01T23:59:59.000Z

453

Direct Photons at RHIC  

E-Print Network (OSTI)

A brief overview of direct-photon measurements in p+p and Au+Au collisions at sqrt(s_NN) = 200 GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is given. Direct-photon yields for pT > 4 GeV/c and photon-hadron azimuthal correlations were determined with the aid of an electromagnetic calorimeter. By detecting e+e- pairs from the internal conversion of virtual photons direct-photon yields were measured between 1 direct-photon yield in this range.

Klaus Reygers; for the PHENIX Collaboration

2009-08-17T23:59:59.000Z

454

Early dissipation and viscosity  

E-Print Network (OSTI)

We consider dissipative phenomena due to the relaxation of an initial anisotropic local pressure in the fireball created in relativistic heavy-ion collisions, both for the Bjorken boost-invariant case and for the azimuthally symmetric radial expansion with boost-invariance. The resulting increase of the entropy can be counterbalanced by a suitable retuning of the initial temperature. An increase of the transverse collective flow is observed. The influence of the shear viscosity on the longitudinal expansion is also studied. Viscosity reduces the cooling rate from the longitudinal work and counteracts the pressure gradients that accelerate the longitudinal flow.

Piotr Bozek

2008-04-24T23:59:59.000Z

455

Toroidal magnetic detector for high resolution measurement of muon momenta  

DOE Patents (OSTI)

A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector are described in this paper. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferred embodiment, the shape of the toroidal magnet volume is adjusted to provide constant resolution over a wide range of rapidity.

Bonanos, P.

1990-11-30T23:59:59.000Z

456

Toroidal magnetic detector for high resolution measurement of muon momenta  

DOE Patents (OSTI)

A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferred embodiment, the shape of the toroidal magnet volume is adjusted to provide constant resolution over a wide range of rapidity. 4 figs.

Bonanos, P.

1992-01-07T23:59:59.000Z

457

Mutual transformation of light waves by reflection holograms in photorefractive crystals of the 4-bar 3m symmetry  

SciTech Connect

The mutual transformation of light waves in the case of their simultaneous diffraction from a bulk reflection phase hologram, which was formed in a cubic photorefractive crystal of the 4-bar 3m symmetry class, has been studied. The indicator surfaces of the polarization-optimized values of the relative intensity of the object wave, which make it possible to determine the amplification of this wave for any crystal cut, are constructed. The linear polarization azimuths at which the energy exchange between the light waves reaches a maximum are found numerically for crystals of different cuts.

Naunyka, V. N.; Shepelevich, V. V., E-mail: vasshep@inbox.ru [Mozyr State Pedagogical University (Belarus)

2011-05-15T23:59:59.000Z

458

Studies of 3D structure of the nucleon with CLAS at Jlab  

Science Conference Proceedings (OSTI)

Studies of single-spin asymmetries in pions electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized and polarized targets, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility, are presented. A substantial sin phih amplitude has been measured in the the cross section as a function of the azimuthal angle phih of the produced neutral pion. The dependence of this amplitude on Bjorken x and on the pion transverse momentum has been extracted with significantly higher precision than previous data and is compared to model calculations.

Mher Aghasyan

2011-12-01T23:59:59.000Z

459

Studies of 3D structure of the nucleon with CLAS at JLab  

Science Conference Proceedings (OSTI)

Studies of single-spin asymmetries in pions electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized and polarized targets, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility, are presented. A substantial sin {phi}{sub h} amplitude has been measured in the the cross section as a function of the azimuthal angle {phi}{sub h} of the produced neutral pion. The dependence of this amplitude on Bjorken x and on the pion transverse momentum has been extracted with significantly higher precision than previous data and is compared to model calculations.

Aghasyan, Mher [INFN, Laboratori Nazionali di Frascati, 00044 Frascati (Italy); Collaboration: CLAS Collaboration

2011-12-14T23:59:59.000Z

460

Studies of spin-orbit correlations at JLAB  

Science Conference Proceedings (OSTI)

Studies of single spin asymmetries for pion electroproduction in semi-inclusive deep-inelastic scattering are presented using the polarized \\sim6 GeV electrons from at the Thomas Jefferson National Accelerator Facility (JLab) and the Continuous Electron Beam Accelerator Facility (CEBAF) Large Acceptance Spectrometer (CLAS) with the Inner Calorimeter. The cross section versus the azimuthal angle {\\phi}_h of the produced neutral pion has a substantial sin {\\phi}_h amplitude. The dependence of this amplitude on Bjorken x_B and on the pion transverse momentum is extracted and compared with published data.

Mher Aghasyan, Harut Avakian

2011-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Stochastic Gravitational Wave Measurements with Bar Detectors: Dependence of Response on Detector Orientation  

E-Print Network (OSTI)

The response of a cross-correlation measurement to an isotropic stochastic gravitational-wave background depends on the observing geometry via the overlap reduction function. If one of the detectors being correlated is a resonant bar whose orientation can be changed, the response to stochastic gravitational waves can be modulated. I derive the general form of this modulation as a function of azimuth, both in the zero-frequency limit and at arbitrary frequencies. Comparisons are made between pairs of nearby detectors, such as LIGO Livingston-ALLEGRO, Virgo-AURIGA, Virgo-NAUTILUS, and EXPLORER-AURIGA, with which stochastic cross-correlation measurements are currently being performed, planned, or considered.

John T Whelan

2005-09-27T23:59:59.000Z

462

Comparison of two and three spatial dimensional solutions of a parabolic approximation of the wave equation at ocean?basin scales in the presence of internal waves: 200–250 Hz.  

Science Conference Proceedings (OSTI)

Numerical solutions are given for a parabolic approximation to the acoustic waveequation at 200 and 250 Hz in two and three spatial dimensions to determine if azimuthal coupling in the horizontal coordinate significantly affects horizontal correlation in the presence of internal gravity waves in the sea. Coupling is a small effect at distances of 4000 km or less. This implies that accurate solutions are possible using computations from uncoupled vertical slices. Shapes of horizontal correlation are not far from shapes given by several theories. Estimates of horizontal correlation at 4000 km and 200 and 250 Hz are about 0.4 and 0.3 km

John Spiesberger

2011-01-01T23:59:59.000Z

463

Stretching of the toroidal field and generation of magnetosonic waves in differentially rotating plasma  

E-Print Network (OSTI)

We evaluate the generation of magnetosonic waves in differentially rotating magnetized plasma. Differential rotation leads to an increase of the azimuthal field by winding up the poloidal field lines into the toroidal field lines. An amplification of weak seed perturbations is considered in this time-dependent background state. It is shown that seed perturbations can be amplified by several orders of magnitude in a differentially rotating flow. The only necessary condition for this amplification is the presence of a non-vanishing component of the magnetic field in the direction of the angular velocity gradient.

Bonanno, Alfio

2007-01-01T23:59:59.000Z

464

Circular Rydberg states of atomic hydrogen in an arbitrary magnetic field  

E-Print Network (OSTI)

We report a theoretical scheme using a B-spline basis set to improve the poor computational accuracy of circular Rydberg states of hydrogen atoms in the intermediate magnetic field. This scheme can produce high accuracy energy levels and valid for an arbitrary magnetic field. Energy levels of hydrogen are presented for circular Rydberg states with azimuthal quantum numbers $|m|$ = 10 - 70 as a function of magnetic field strengths ranging from zero to 2.35 $\\times$ 10$^9$ T. The variation of spatial distributions of electron probability densities with magnetic field strengths is discussed and competition between Coulomb and magnetic interactions is illustrated.

Zhao, L B; Du, M L

2011-01-01T23:59:59.000Z

465

Earth stress measurements in the South Belridge oil field, Kern County, California  

SciTech Connect

The authors report earth stress magnitudes in the South Belridge oil field, determined from integrated density logs and microhydraulic fracturing test. They indicate that the vertical stress is generally the intermediate principal stress, except possibly at the deepest zone tested (2,100 ft (640 m)), where it is approximately equal to the lesser compressive horizontal stress. Azimuth of the greater horizontal stress and of induced hydraulic fractures, as measured or inferred by several different techniques, is N15{sup 0}E+-15{sup 0}.

Hansen, K.S.; Purcell, W.R. (Shell Development Co., Houston, TX (US))

1989-12-01T23:59:59.000Z

466

Jet-Tagged Back-Scattering Photons For Quark Gluon Plasma Tomography  

E-Print Network (OSTI)

Direct photons are important probes for quark gluon plasma created in high energy nuclear collisions. Various sources of direct photons in nuclear collisions are known, each of them endowed with characteristic information about the production process. However, it has been challenging to separate direct photon sources through measurements of single inclusive photon spectra and photon azimuthal asymmetry. Here we explore a method to identify photons created from the back-scattering of high momentum quarks off quark gluon plasma. We show that the correlation of back-scattering photons with a trigger jet leads to a signal that should be measurable at RHIC and LHC.

Rainer J. Fries; Somnath De; Dinesh K. Srivastava

2012-11-05T23:59:59.000Z

467

Leading neutrons from polarized pp collisions  

SciTech Connect

We calculate the cross section and single-spin azimuthal asymmetry, A{sub n}(t) for inclusive neutron production in pp collisions at forward rapidities relative to the polarized proton. Absorptive corrections to the pion pole generate a relative phase between the spin-flip and non-flip amplitudes, which leads to an appreciable spin asymmetry. However, the asymmetry observed recently in the PHENIX experiment at RHIC at very small |t|{approx}0.01 GeV{sup 2} cannot be explained by this mechanism.

Kopeliovich, B. Z. [Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile); Institut fuer Theoretische Physik der Universitaet, Philosophenweg 19, 69120 Heidelberg (Germany); Potashnikova, I. K.; Schmidt, Ivan [Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile); Soffer, J. [Department of Physics, Temple University, Philadelphia, PA 19122-6082 (United States)

2008-10-13T23:59:59.000Z

468

Studies of. mu. prime s underground with the Soudan 2 Tracker  

Science Conference Proceedings (OSTI)

During the period July 1987 through March 1988, a section of the Soudan 2 active shield known as the Tracker' recorded {approximately}250,000 muon tracks. The detector is located in the Tower-Soudan State Park in Soudan, Minnesota USA at a depth of 2090 meters-water equivalent. We have analysed the data collected and searched for time-dependent astronomical sources. Distributions in azimuthal and zenith angles as well as declination and right ascension are shown. 1 ref., 7 figs., 1 tab.

Kochocki, J.; Benjamin, D.; Ewen, B.; Kafka, T.; Mann, A.; McMaster, L.; Milburn, R.; Napier, A.; Oliver, W.; Saitta, B.; Schneps, J.; Sundaralingam, N. (Tufts Univ., Medford, MA (USA)); Allison, W.W.M.; Barr, G.D.; Brooks, C.B.; Cobb, J.H.; Kirby-Gallagher, L.M.; Giles, R.H.; Perkins, D.H.; Shield, P.D.; Thomson, M.A.; West, N. (Oxford Univ. (UK)); Alner, G.J.; Cockerill, D.J.A.; Edwards, V.W.; Garcia-Garcia, C.; Litchf

1989-08-23T23:59:59.000Z

469

Long-range detection of VLF radiation produced by heating the auroral electrojet  

SciTech Connect

This paper presents the first evidence of long-range detection (greater than 1000 km) of calibrated VLF signals resulting from the HF heating of the auroral electrojet, that is, signal detection at a point of direct 'line of sight' of the heated patch of ionosphere. The 'radial' as well as the'azimuthal' magnetic component of the signals are recorded; from their ratio, the waveguide mode polarization is obtained. Observed absolute magnetic field strengths and waveguide polarizations are found to be in line with the predictions of simple waveguide models. 17 refs.

Barr, R.; Stubbe, P.; Kopka, H. (Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau (Federal Republic of Germany))

1991-08-01T23:59:59.000Z

470

Away-side distribution in a parton multiple scattering model and background-suppressed measures  

E-Print Network (OSTI)

A model of parton multiple scattering in a dense and expanding medium is described. The simulated results reproduce the general features of the data. In particular, in the intermediate trigger momentum region there is a dip-bump structure, while at higher trigger momentum the double bumps merge into a central peak. Also, a new measure is proposed to quantify the azimuthal distribution with the virtue that it suppresses the statistical fluctuations event-by-event, while enhancing the even-structure of the signal.

Charles B. Chiu; Rudolph C. Hwa

2006-08-30T23:59:59.000Z

471

Nonlinear Cerenkov Radiation in Nonlinear Photonic Crystal Waveguides  

SciTech Connect

We study nonlinear Cerenkov radiation generated from a nonlinear photonic crystal waveguide where the nonlinear susceptibility tensor is modulated by the ferroelectric domain. Nonlinear polarization driven by an incident light field may emit coherently harmonic waves at new frequencies along the direction of Cerenkov angles. Multiple radiation spots with different azimuth angles are simultaneously exhibited from such a hexagonally poled waveguide. A scattering involved nonlinear Cerenkov arc is also observed for the first time. Cerenkov radiation associated with quasi-phase matching leads to these novel nonlinear phenomena.

Zhang, Y.; Gao, Z. D.; Qi, Z.; Zhu, S. N.; Ming, N. B. [National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093 (China)

2008-04-25T23:59:59.000Z

472

Cascaded Cerenkov third-harmonic generation in random quadratic media  

SciTech Connect

We investigate experimentally and theoretically the conical emission of Cerenkov-type third-harmonic generation in strontium barium niobate of random 2D-{chi}{sup (2)} distribution. The azimuthal intensity distribution is explained by the polarization properties of the fundamental and Cerenkov second-harmonic waves, depending on the cascaded origin of the generation process. Moreover, we show the role of the individual domain shape in an additional modulation on the conical emission, controlled by the electrical switching of the spontaneous polarization of the ferroelectric medium.

Ayoub, Mousa; Roedig, Philip; Imbrock, Joerg; Denz, Cornelia [Institute of Applied Physics and Center for Nonlinear Science (CeNoS), Westfaelische Wilhelms-Universitaet Muenster, Corrensstrasse 2, 48149 Muenster (Germany)

2011-12-12T23:59:59.000Z

473

Sunsets and solar diameter measurement  

E-Print Network (OSTI)

A sunset over the sea surface offers the possibility to chronometrate a solar transit across the horizon. The vertical solar diameter is proportional to the duration of the sunset, the cosine of the azimuth and the cosine of the latitude of the observing site. The same formula applies to every circle of equal height, called in arabic almucantarat, and it is exploited in the measurements of the solar diameter made with the Danjon's solar astrolabes. The analogies between sunsets and astrolabes observations are presented, showing advantages and sources of errors of these methods of solar astrometry.

Sigismondi, Costantino

2011-01-01T23:59:59.000Z

474

Calculating the Diffuse Responsivity of Solar Pyranometers  

DOE Green Energy (OSTI)

Pyranometers are used to measure the global and diffuse components of solar irradiance. One of the methods to calculate the unshade (global) responsivity of a pyranometer is the standard shading method, described in the Annual Book of ASTM Standards, section 14, volume 14.02. In this paper, the standard method is used to calculate the shade (diffuse) responsivity of a pyranometer by accounting for the zenith and azimuth response of the pyranometer. A discussion of the effect of pyranometer offset on the calculated responsivity is also presented.

Reda, I.; Myers, D.

1999-08-16T23:59:59.000Z

475

Production and identification of the ion-temperature-gradient instability  

SciTech Connect

In order to produce and study the ion-temperature-gradient instability, the Columbia Linear Machine has been modified to yield a peaked ion temperature and flattish density profiles. Under these conditions the parameter {eta}{sub {ital i}} (={ital d} ln{ital T}{sub {ital i}}/{ital d} ln{ital N}) exceeded the critical value and a strong instability has been observed. Further identification has been based on observation of the azimuthal and axial wavelengths, and the real frequency, appropriate for the mode.

Sen, A.K.; Chen, J.; Mauel, M. (Plasma Research Laboratory, Columbia University, New York, New York 10027 (US))

1991-01-28T23:59:59.000Z

476

Field-error induced transport in a pure electron plasma column  

SciTech Connect

The long confinement times achieved in experiments on pure electron plasmas are explainable in terms of the conservation of canonical angular momentum in azimuthally symmetic systems. A low-density, pure electron plasma is considered, and the effect of disrupting the system's symmetry by introducing a small, magnetic field error is investigated. It is found that this external perturbation can resonantly drive low-frequency waves that couple back to the field error and produce a change in the plasma's angular momentum. This results in changing the radius of the column.

Keinigs, R.

1984-06-01T23:59:59.000Z

477

Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive ?^0 production  

DOE Green Energy (OSTI)

We present studies of single-spin asymmetries for neutral pion electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized hydrogen target, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. A substantial sin {phi}{sub h} amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle {phi}{sub h} of the produced neutral pion. The dependence of this amplitude on Bjorken x and on the pion transverse momentum is extracted with significantly higher precision than previous data and is compared to model calculations.

Holtrop, M; Hyde, C E; Ireland, D G; Isupov, E L; Jawalkar, S S; Jenkins, D; Jo, H S; Joo, K; Keller, D; Khandaker, M; Khetarpal, P; Kim, A; Kimy, W; Klein, A; Klein, F J; Kubarovsky, V; Kuhn, S E; Kuleshov, S V; Kuznetsov, V; Kvaltine, N D; Livingston, K; Lu, H Y; MacGregor, I.J. D.; Markov, N; Mayer, M; McAndrew, J; McKinnon, B; Meyer, C A; Micherdzinska, A.M.; Mokeev, V; Moreno, B; Moutarde, H; Munevar, E; Nadel-Turonski, P; Ni, A; Niccolai, S; Niculescu, G; Niculescu, I; Osipenko, M; Ostrovidov, A I; Paolone, M; Pappalardo, L; Paremuzyan, R; Park, K; Park, S; Pasyuk, E; Anefalos Pereira, S; Phelps, E; Pisano, S; Pogorelko, O; Pozdniakov, S; Price, J W; Procureur, S; Prok, Y; Protopopescu, D; Raue, B A; Ricco, G; Rimal, D; Ripani, M; Rosner, G; Sabatio, F; Saini, M S; Salgado, C; Schott, D; Schumacher, R A; Seder, E; Seraydaryan, H; Sharabian, Y G; Smith, G D; Sober, D I; Stepanyan, S S; Stepanyan, S; Stoler, P; Strakovsky, I; Strauch, S; Taiuti, M; Tang, W; Taylor, C E; Tkachenko, S; Ungaro, M; Voskanyan, H; Voutier, E; Watts, D; Weinstein, L B; Weygand, D P; Wood, M H; Zana, L; Zhang, J; Zhao, B; Zhao, Z W

2011-10-25T23:59:59.000Z

478

Flame stabilizer for stagnation flow reactor  

DOE Patents (OSTI)

A method of stabilizing a strained flame in a stagnation flow reactor. By causing a highly strained flame to be divided into a large number of equal size segments it is possible to stablize a highly strained flame that is on the verge of extinction, thereby providing for higher film growth rates. The flame stabilizer is an annular ring mounted coaxially and coplanar with the substrate upon which the film is growing and having a number of vertical pillars mounted on the top surface, thereby increasing the number of azimuthal nodes into which the flame is divided and preserving an axisymmetric structure necessary for stability.

Hahn, David W. (Dublin, CA); Edwards, Christopher F. (Sunnyvale, CA)

1999-01-01T23:59:59.000Z

479

Method of growing films by flame synthesis using a stagnation-flow reactor  

DOE Patents (OSTI)

A method of stabilizing a strained flame in a stagnation flow reactor. By causing a highly strained flame to be divided into a large number of equal size segments it is possible to stablize a highly strained flame that is on the verge of extinction, thereby providing for higher film growth rates. The flame stabilizer is an annular ring mounted coaxially and coplanar with the substrate upon which the film is growing and having a number of vertical pillars mounted on the top surface, thereby increasing the number of azimuthal nodes into which the flame is divided and preserving an axisymmetric structure necessary for stability.

Hahn, David W. (Dublin, CA); Edwards, Christopher F. (Sunnyvale, CA)

1998-01-01T23:59:59.000Z

480

Triangular flow in heavy ion collisions in a multiphase transport model  

E-Print Network (OSTI)

We obtain a new set of parameters in a multiphase transport (AMPT) model that are able to describe both the charged particle multiplicity density and the elliptic flow measured in Au + Au collisions at center-of-mass energy root(S)NN = 200 GeV at the Relativistic Heavy Ion Collider, although they still give somewhat softer transverse momentum spectra. We then use the model to predict the triangular flow due to fluctuations in the initial collision geometry and study its effect relative to those from other harmonic components of anisotropic flows on the dihadron azimuthal correlations in both central and midcentral collisions.

Xu, Jun; Ko, Che Ming.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "30-degree azimuth intervals" from the National Library of EnergyBeta (NLEBeta).
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481

Remarks on Higgs boson production  

E-Print Network (OSTI)

We demonstrate that Higgs boson production in fusion processes is accompanied by large azimuthal asymmetry. This asymmetry can be used to facilitate detection of Higgs boson events. We also demonstrate that the double Higgs boson production at threshold is a very appropriate process to test the existence of new physics at higher energy. 1 1 Introduction. In the modern theory of electroweak interaction Higgs boson plays the very important role at high energies. Without Higgs bosons the scattering amplitudes of massive W and Z bosons grow with energy and violate unitarity. Diagrams with Higgs bosons exchange improve drastically this high-energy

unknown authors

1997-01-01T23:59:59.000Z

482

Exploring Cylindrical Solutions in Modified f(G) Gravity  

E-Print Network (OSTI)

We present cylindrically symmetric solutions for a type of the Gauss-Bonnet gravity, in details. We derive the full system of the field equations and show that there exist seven families of exact solutions for three forms of viable models. By applying the method based on the effective fluid energy momentum tensor components, we evaluate the mass per unit length for the solutions. From dynamical point of the view, by evaluating the null energy condition for these configurations, we show that in some cases the azimuthal pressure breaks the energy condition. This violation of the null energy condition predicts the existence of a cylindrical wormhole.

M. J. S. Houndjo; M. E. Rodrigues; D. Momeni; R. Myrzakulov

2013-01-20T23:59:59.000Z

483

Underwater bubble pinch-off: the decay of advection out of the singularity  

E-Print Network (OSTI)

Air bubble pinch-off is a type of implosion singularity that exhibits memory. Provided that the final collapse is radial, a small azimuthal vibration maintains fixed amplitude in time. We numerically test whether radial collapse results when a strong vertical advection from the neck minimum region is present. Regardless of the initial shape, advection always rapidly elongates the neck into a short cylindrical segment. The pinch-off then becomes dominated by radial collapse. Thus, the memory-encoding singularity dynamics is robust.

Herbst, Daniel C

2011-01-01T23:59:59.000Z

484

Transverse Spin Effects in SIDIS at COMPASS  

Science Conference Proceedings (OSTI)

The measurement of single spin asymmetries in semi?inclusive deep?inelastic scattering (SIDIS) on a transversely polarized target is an important part of the COMPASS physics program. It allows us to investigate the transversity distribution functions as well as transverse momentum dependent distribution functions by measuring azimuthal asymmetries in the hadron production. After COMPASS took data in the years 2002–2004 by scattering a 160 GeV/c muon beam off a transversely polarized deuteron ( 6 LiD ) target

Rainer Joosten; on behalf of the COMPASS collaboration

2009-01-01T23:59:59.000Z

485

Beam-helicity asymmetry in associated electroproduction of real photons $ep \\to e\\gamma \\pi N$ in the $\\Delta$-resonance region  

E-Print Network (OSTI)

The beam-helicity asymmetry in associated electroproduction of real photons, $ep\\to e\\gamma \\pi N$, in the $\\Delta$(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, $ep\\to e\\gamma \\pi^0 p$ and $ep\\to e\\gamma \\pi^+ n$, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.

Airapetian, A; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetissian, A; Avetisyan, E; Blok, H P; Böttcher, H; Borissov, A; Bowles, J; Brodski, I; Bryzgalov, V; Burns, J; Capitani, G P; Cisbani, E; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; Deconinck, W; De Leo, R; De Sanctis, E; Diefenthaler, M; Di Nezza, P; Düren, M; Ehrenfried, M; Elbakian, G; Ellinghaus, F; Etzelmüller, E; Fabbri, R; Frullani, S; Gapienko, G; Gapienko, V; García, J Garay; Garibaldi, F; Gavrilov, G; Gharibyan, V; Giordano, F; Gliske, S; Hartig, M; Hasch, D; Holler, Y; Hristova, I; Ivanilov, A; Jackson, H E; Joosten, S; Kaiser, R; Karyan, G; Keri, T; Kinney, E; Kisselev, A; Korotkov, V; Kozlov, V; Kravchenko, P; Krivokhijine, V G; Lagamba, L; Lapikás, L; Lehmann, I; Lenisa, P; Lorenzon, W; Lu, X -G; Ma, B -Q; Mahon, D; Makins, N C R; Manaenkov, S I; Mao, Y; Marianski, B; Marukyan, H; Miller, C A; Miyachi, Y; Movsisyan, A; Muccifora, V; Murray, M; Mussgiller, A; Naryshkin, Y; Nass, A; Negodaev, M; Nowak, W -D; Pappalardo, L L; Perez-Benito, R; Petrosyan, A; Reimer, P E; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubin, J; Ryckbosch, D; Salomatin, Y; Schäfer, A; Schnell, G; Seitz, B; Shibata, T -A; Stahl, M; Statera, M; Steffens, E; Steijger, J J M; Stewart, J; Stinzing, F; Taroian, S; Terkulov, A; Truty, R; Trzcinski, A; Tytgat, M; Van Haarlem, Y; Van Hulse, C; Vikhrov, V; Vilardi, I; Wang, S; Yaschenko, S; Ye, Z; Yen, S; Zagrebelnyy, V; Zihlmann, B; Zupranski, P

2013-01-01T23:59:59.000Z

486

Damping control of a large flexible manipulator through inertial forces of a small manipulator  

SciTech Connect

Damping control is applied to a detailed computer model of a long- reach flexible manipulator test bed. The test bed consists of a long slender link with a dexterous manipulator mounted at its tip. The movement of the dexterous manipulator is controlled to create inertial damping forces on the long link. Parameter identification and sequential loop-closure are used to design a controller that feeds back relative tip position and velocity of the long link to control the azimuth angle of the dexterous manipulator. The controller is designed to be robust to varying manipulator loading conditions and reliable under sensor failures.

Trudnowski, D.J.; Baker, C.P.; Evans, M.S.

1993-06-01T23:59:59.000Z

487

Perfect Sorting by Reversals Is Not Always Difficult - CECM - Simon ...  

E-Print Network (OSTI)

data set used in [31] for example. APPENDIX. MODULAR DECOMPOSITION OF GRAPHS. In Section 3, we mentioned links between common intervals of a pair ...

488

ARM - Instrument - flask  

NLE Websites -- All DOE Office Websites (Extended Search)

or Programmable Flask Package (PFP), is used in conjunction with the Programmable Compressor Package (PCP)-a mounted compressor and power module-for programmable time-interval...

489

Building Energy Software Tools Directory: Energy Expert  

NLE Websites -- All DOE Office Websites (Extended Search)

software that creates a smart model of a building using interval data and hourly weather data and compares daily energy consumption against this norm. The Energy Expert...

490

Robust Decision Making using a General Utility Set  

E-Print Network (OSTI)

Then, Mary can use (1 ? ?)% confidence interval to set up the error tolerant range [?j, ..... Organizational Behavior and Human Performance, 21(1):61–72, 1978.

491

Impulsive Optimal Control of Hybrid Finite-Dimensional Lagrangian ...  

E-Print Network (OSTI)

2.6.3 Change in Mechanical Energy and Impuls and Dissipation . . . . . . . . ..... blocked, black is unblocked, for link 1 green position at transition interval). . . . 105.

492

Retail Unbundling - Ohio - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Vectren Energy can also adjust prices monthly, while Dominion East Ohio and Columbia Gas can adjust their rates only at quarterly intervals. ... Proposed Tariff.

493

The Impact of Marcellus Shale Total Organic Carbon on Productivity.  

E-Print Network (OSTI)

??In the Appalachian basin, the Devonian organic-rich shale interval, including the Marcellus Shale, is an important target for natural gas exploration. It has been utilized… (more)

Fakhouri, Eyad

2013-01-01T23:59:59.000Z

494

Determination of Fracture Inflow Parameters With a Borehole Fluid ...  

In the hydraulic tests that correspond to the test intervals of interest with respect to the present comparison with fluid electric conductivity logging ...

495

Molecular organic geochemistry of the oil and source rocks in Railroad Valley, eastern Great Basin, Nevada, United States.  

E-Print Network (OSTI)

??A comprehensive geochemical study of oils from Railroad Valley, Nevada and two candidate source rock intervals from the nearby Egan Range, was conducted in order… (more)

Ahdyar, LaOde

2011-01-01T23:59:59.000Z

496

Collagen Films Protocol  

Science Conference Proceedings (OSTI)

... Sterilize squirt bottles prior to their first use, and at regularly scheduled intervals throughout the year as follows: 1st fill bottles with ethanol and spray ...