Sample records for dynamic line ratings

  1. Dynamic Line Rating: Research and Policy Evaluation

    SciTech Connect (OSTI)

    Jake P. Gentle; Kurt S. Myers; Michael R. West

    2014-07-01T23:59:59.000Z

    Dynamic Line Rating (DLR) is a smart grid technology that allows the rating of electrical conductors to be increased based on local weather conditions. Overhead lines are conventionally given a conservative rating based on worst case scenarios. We demonstrate that observing the conditions in real time leads to additional capacity and safer operation. This paper provides a report of a pioneering scheme in the United States of America in which DLR has been applied. Thereby, we demonstrate that observing the local weather conditions in real time leads to additional capacity and safer operation. Secondly, we discuss limitations involved. In doing so, we arrive at novel insights which will inform and improve future DLR projects. Third, we provide a policy background and discussion to clarify the technology’s potential and identifies barriers to the imminent adoption of dynamic line rating systems. We provide suggestions for regulatory bodies about possible improvements in policy to encourage adoption of this beneficial technology.

  2. Dynamic Line Rating Oncor Electric Delivery Smart Grid Program

    SciTech Connect (OSTI)

    Johnson, Justin; Smith, Cale; Young, Mike; Donohoo, Ken; Owen, Ross; Clark, Eddit; Espejo, Raul; Aivaliotis, Sandy; Stelmak, Ron; Mohr, Ron; Barba, Cristian; Gonzalez, Guillermo; Malkin, Stuart; Dimitrova, Vessela; Ragsdale, Gary; Mitchem, Sean; Jeirath, Nakul; Loomis, Joe; Trevino, Gerardo; Syracuse, Steve; Hurst, Neil; Mereness, Matt; Johnson, Chad; Bivens, Carrie

    2013-05-04T23:59:59.000Z

    Electric transmission lines are the lifeline of the electric utility industry, delivering its product from source to consumer. This critical infrastructure is often constrained such that there is inadequate capacity on existing transmission lines to efficiently deliver the power to meet demand in certain areas or to transport energy from high-generation areas to high-consumption regions. When this happens, the cost of the energy rises; more costly sources of power are used to meet the demand or the system operates less reliably. These economic impacts are known as congestion, and they can amount to substantial dollars for any time frame of reference: hour, day or year. There are several solutions to the transmission constraint problem, including: construction of new generation, construction of new transmission facilities, rebuilding and reconductoring of existing transmission assets, and Dynamic Line Rating (DLR). All of these options except DLR are capital intensive, have long lead times and often experience strong public and regulatory opposition. The Smart Grid Demonstration Program (SGDP) project co-funded by the Department of Energy (DOE) and Oncor Electric Delivery Company developed and deployed the most extensive and advanced DLR installation to demonstrate that DLR technology is capable of resolving many transmission capacity constraint problems with a system that is reliable, safe and very cost competitive. The SGDP DLR deployment is the first application of DLR technology to feed transmission line real-time dynamic ratings directly into the system operation’s State Estimator and load dispatch program, which optimizes the matching of generation with load demand on a security, reliability and economic basis. The integrated Dynamic Line Rating (iDLR)1 collects transmission line parameters at remote locations on the lines, calculates the real-time line rating based on the equivalent conductor temperature, ambient temperature and influence of wind and solar radiation on the stringing section, transmits the data to the Transmission Energy Management System, validates its integrity and passes it on to Oncor and ERCOT (Electric Reliability Council of Texas) respective system operations. The iDLR system is automatic and transparent to ERCOT System Operations, i.e., it operates in parallel with all other system status telemetry collected through Supervisory Control and Data Acquisition (SCADA) employed across the company.

  3. Evaluation of Instrumentation and Dynamic Thermal Ratings for Overhead Lines

    SciTech Connect (OSTI)

    Phillips, A.

    2013-01-31T23:59:59.000Z

    In 2010, a project was initiated through a partnership between the Department of Energy (DOE) and the New York Power Authority (NYPA) to evaluate EPRI?s rating technology and instrumentation that can be used to monitor the thermal states of transmission lines and provide the required real-time data for real-time rating calculations. The project included the installation and maintenance of various instruments at three 230 kV line sites in northern New York. The instruments were monitored, and data collection and rating calculations were performed for about a three year period.

  4. INVESTIGATION OF A DYNAMIC POWER LINE RATING CONCEPT FOR IMPROVED WIND ENERGY INTEGRATION OVER COMPLEX TERRAIN

    SciTech Connect (OSTI)

    Jake P. Gentle; Kurt S Myers; Tyler B Phillips; Inanc Senocak; Phil Anderson

    2014-08-01T23:59:59.000Z

    Dynamic Line Rating (DLR) is a smart grid technology that allows the rating of power line to be based on real-time conductor temperature dependent on local weather conditions. In current practice overhead power lines are generally given a conservative rating based on worst case weather conditions. Using historical weather data collected over a test bed area, we demonstrate there is often additional transmission capacity not being utilized with the current static rating practice. We investigate a new dynamic line rating methodology using computational fluid dynamics (CFD) to determine wind conditions along transmission lines at dense intervals. Simulated results are used to determine conductor temperature by calculating the transient thermal response of the conductor under variable environmental conditions. In calculating the conductor temperature, we use both a calculation with steady-state assumption and a transient calculation. Under low wind conditions, steady-state assumption predicts higher conductor temperatures that could lead to curtailments, whereas transient calculations produce conductor temperatures that are significantly lower, implying the availability of additional transmission capacity.

  5. Chromospheric Dynamics and Line Formation

    E-Print Network [OSTI]

    R. Hammer; P. Ulmschneider

    2007-07-14T23:59:59.000Z

    The solar chromosphere is very dynamic, due to the presence of large amplitude hydrodynamic waves. Their propagation is affected by NLTE radiative transport in strong spectral lines, which can in turn be used to diagnose the dynamics of the chromosphere. We give a basic introduction into the equations of NLTE radiation hydrodynamics and describe how they are solved in current numerical simulations. The comparison with observation shows that one-dimensional codes can describe strong brightenings quite well, but the overall chromospheric dynamics appears to be governed by three-dimensional shock propagation.

  6. Next Generation On-Line Dynamic Security Assessment

    E-Print Network [OSTI]

    Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Power;Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Parts III Research Center (PSERC) research project titled "Next Generation On-Line Dynamic Security Assessment

  7. Dynamical and Stationary Properties of On-line Learning from Finite Training Sets

    E-Print Network [OSTI]

    Wong, Michael K Y

    are found to agree with simulations. The physical origin of the critical learning rate is presentedDynamical and Stationary Properties of On-line Learning from Finite Training Sets Peixun Luo #3 of on-line learning from #12;nite training sets are analysed using the cavity method. For large input

  8. Decoherence rates for Galilean covariant dynamics

    E-Print Network [OSTI]

    Jeremy Clark

    2008-04-02T23:59:59.000Z

    We introduce a measure of decoherence for a class of density operators. For Gaussian density operators in dimension one it coincides with an index used by Morikawa (1990). Spatial decoherence rates are derived for three large classes of the Galilean covariant quantum semigroups introduced by Holevo. We also characterize the relaxation to a Gaussian state for these dynamics and give a theorem for the convergence of the Wigner function to the probability distribution of the classical analog of the process.

  9. Dynamic Phase Transition, Enhanced Reaction Rate, and

    E-Print Network [OSTI]

    Rikvold, Per Arne

    is a CO, they react [CO + O CO2(g)] These dynamical rules fully define the model. Its properties on a crystal surface by Langmuir-Hinshelwood mechanism: CO(g)+S CO(a) O2 + 2S 2O(a) CO(a) + O(a) CO2(g) + 2S been observed experimentally for high enough temperatures. Add CO desorption rate k to mimic

  10. CANDEL: Product Line Based Dynamic Context Management for Pervasive Applications

    E-Print Network [OSTI]

    Liu, Xiaodong

    , it is essential for computing applications to be context-aware. However, one of the major challenges the context as a dynamic product line composed of context primitives (CPs). Frame based software product line techniques are used together with OWL ontology to define CPs and to dynamically generate the current context

  11. Dynamic Screening and Thermonuclear Reaction Rates

    E-Print Network [OSTI]

    Andrei V. Gruzinov

    1997-02-06T23:59:59.000Z

    We show that there are no dynamic screening corrections to the Salpeter's enhancement factor in the weak-screening limit.

  12. Dynamic screening correction for solar p-p reaction rates

    E-Print Network [OSTI]

    Mussack, Katie; 10.1088/0004-637X/729/2/96

    2011-01-01T23:59:59.000Z

    The solar abundance controversy inspires renewed investigations of the basic physics used to develop solar models. Here we examine the correction to the proton-proton reaction rate due to dynamic screening effects. Starting with the dynamic screening energy from the molecular-dynamics simulations of Mao et al., we compute a reaction-rate correction for dynamic screening. We find that, contrary to static screening theory, this dynamic screening does not significantly change the reaction rate from that of the bare Coulomb potential.

  13. Recombination rates, Resonance Strengths and Line Profiles of Dielectronic Satellite Lines

    E-Print Network [OSTI]

    Nahar, Sultana Nurun

    , The Ohio State University, Columbus, OH 43210, USA nahar@astronomy.ohio-state.edu, pradhan@astronomy.ohio, labeled `a' through `v', via transitions of the type 1s2l2l 1s2 2l. These lines are seen at energies of the highly charged ions Ca XVIII, Fe XXIV, and Ni XXVI. In contrast to obtaining a single energy point

  14. Method and means for dynamic measurement of rates of adsorption from solutions

    DOE Patents [OSTI]

    Slomka, B.J.; Buttermore, W.H.

    1992-05-05T23:59:59.000Z

    A method and apparatus are described for the dynamic measurement of rates of absorption from solutions. The method has the advantage of avoiding the use of solvent normally used to establish a baseline. The method involves pre-evacuating the adsorbent contained in an adsorbent cell and thereafter rapidly contacting the adsorbent with analytical solution, all without prior exposure of adsorbent to pure solvent. The result is a sharp characteristic adsorption line. 5 figs.

  15. Method and means for dynamic measurement of rates of adsorption from solutions

    DOE Patents [OSTI]

    Slomka, Bogdan J. (Ames, IA); Buttermore, William H. (Ames, IA)

    1992-05-05T23:59:59.000Z

    A method and apparatus for dynamic measurement of rates of absorption from solutions. The method has the advantage of avoiding the use of solvent normally used to establish a baseline. The method involves pre-evacuating the adsorbent contained in an adsorbent cell and thereafter rapidly contacting the adsorbent with analytical solution, all without prior exposure of adsorbent to pure solvent. The result is a sharp characteristic adsorption line.

  16. Rate constants from the reaction path Hamiltonian. I. Reactive flux simulations for dynamically correct rates

    E-Print Network [OSTI]

    Bell, Alexis T.

    As ab initio electronic structure calculations become more accurate, inherent sources of error, facilitate reactive flux calculations. As an example we compute the dynamically corrected rate constant on which the reaction occurs. A large number of electronic structure theo- ries are available

  17. Role of kinks in the dynamics of contact lines receding on superhydrophobic surfaces Anais Gauthier1

    E-Print Network [OSTI]

    Boyer, Edmond

    Role of kinks in the dynamics of contact lines receding on superhydrophobic surfaces Ana: January 7, 2013) We have investigated the depinning of the contact line on superhydrophobic surfaces

  18. Development of an On-Line Expert System: Heat Rate Degradation Expert System Advisor

    E-Print Network [OSTI]

    Sopocy, D. M.; Henry, R. E.; Gehl, S.; Divakaruni, S. M.

    and performance monitors in evaluating and diagnosing plant performance. Recognizing an industry-wide need for this advanced capability, the Electric Power Research Institute (EPRI) has undertaken the development and demonstration of an on-line expert system... called "Heat Rate Degradation Expert System Advisor." This expert system will enhance the logic trees previously developed and documented in EPRI Report CS-4554, "Heat Rate Improvement Guidelines for Existing Fossil Plants" (1), with analytical...

  19. Solar wind driving of magnetospheric ULF waves: Field line resonances driven by dynamic pressure fluctuations

    E-Print Network [OSTI]

    Solar wind driving of magnetospheric ULF waves: Field line resonances driven by dynamic pressure observational studies suggest that solar wind dynamic pressure fluctuations can drive magnetosphericFedderMobarry (LFM) global, threedimensional magnetohydrodynamic (MHD) simulations of the solar wind

  20. Dynamic and rate-dependent yielding in model cohesive suspensions

    E-Print Network [OSTI]

    Richard Buscall; Peter J. Scales; Anthony D. Stickland; Hui-En Teo; Tiara E. Kusuma; Daniel R. Lester

    2015-02-02T23:59:59.000Z

    An experimental system has been found recently, a coagulated CaCO3 suspension system, which shows very variable yield behaviour depending upon how it is tested and, specifically, at what rate it is sheared. At P\\'eclet numbers Pe > 1 it behaves as a simple Herschel Bulkley liquid, whereas at Pe < 1 highly non-monotonic flow curves are seen. In controlled stress testing it shows hysteresis and shear banding and in the usual type of stress scan, used to measure flow curves in controlled stress mode routinely, it can show very erratic and irreproducible behaviour. All of these features will be attributed here to a dependence of the solid phase, or, yield stress, on the prevailing rate of shear at the yield point. Stress growth curves obtained from step strain-rate testing showed that this rate-dependence was a consequence of P\\'eclet number dependent strain softening. At very low Pe, yield was cooperative and the yield strain was order-one, whereas as Pe approached unity, the yield strain reduced to that needed to break interparticle bonds, causing the yield stress to be greatly reduced. It is suspected that rate-dependent yield could well be the rule rather than the exception for cohesive suspensions more generally. If so, then the Herschel-Bulkley equation can usefully be generalized to read (in simple shear). The proposition that rate-dependent yield might be general for cohesive suspensions is amenable to critical experimental testing by a range of means and along lines suggested.

  1. Helium release rates and ODH calculations from RHIC magnet cooling line failure

    SciTech Connect (OSTI)

    Liaw, C.J.; Than, Y.; Tuozzolo, J.

    2011-03-28T23:59:59.000Z

    A catastrophic failure of the magnet cooling lines, similar to the LHC superconducting bus failure incident, could discharge cold helium into the RHIC tunnel and cause an Oxygen Deficiency Hazard (ODH) problem. A SINDA/FLUINT{reg_sign} model, which simulated the 4.5K/4 atm helium flowing through the magnet cooling system distribution lines, then through a line break into the insulating vacuum volumes and discharging via the reliefs into the RHIC tunnel, had been developed. Arc flash energy deposition and heat load from the ambient temperature cryostat surfaces are included in the simulations. Three typical areas: the sextant arc, the Triplet/DX/D0 magnets, and the injection area, had been analyzed. Results, including helium discharge rates, helium inventory loss, and the resulting oxygen concentration in the RHIC tunnel area, are reported. Good agreement had been achieved when comparing the simulation results, a RHIC sector depressurization test measurement, and some simple analytical calculations.

  2. METASTABILITY, LYAPUNOV EXPONENTS, ESCAPE RATES, AND TOPOLOGICAL ENTROPY IN RANDOM DYNAMICAL

    E-Print Network [OSTI]

    Froyland, Gary

    METASTABILITY, LYAPUNOV EXPONENTS, ESCAPE RATES, AND TOPOLOGICAL ENTROPY IN RANDOM DYNAMICAL rates of random maps, and on topological entropy of random shifts of finite type. The Lyapunov spectrum, 37B55. Key words and phrases. Random dynamical system, open dynamical system, escape rate, Lyapunov

  3. On-line continuous unit heat rate measurement using EPRI`s plant monitoring workstation

    SciTech Connect (OSTI)

    Levy, E.; Sarunac, N. [Lehigh Univ., Bethlehem, PA (United States); Schnetzler, D. [Potomac Electric Power Company, Newburg, MD (United States)] [and others

    1995-06-01T23:59:59.000Z

    Software for both the Output/Loss and Boiler-Turbine Cycle Efficiency (BTCE) methods for measuring unit heat rate of pulverized coal units is now available with the latest version of EPRI`s Plant Monitoring Workstation (PMW). Both methods are the latest version of EPRI`s Plant Monitoring Workstation (PMW). Both methods are running continuously and on-line at PEPCO`s Morgantown Unit 2. Comparisons have been made between the results generated by the two methods and with measured plant data for parameters such as coal feed rate and stack gas flow rate. This paper reviews the basis of the two measurement methods, explains how they were implemented at Morgantown Unit 2, and gives results showing how the calculated values compare with measurements for a range of unit operating conditions.

  4. Material dynamics under extreme conditions of pressure and strain rate

    SciTech Connect (OSTI)

    Remington, B A; Allen, P; Bringa, E; Hawreliak, J; Ho, D; Lorenz, K T; Lorenzana, H; Meyers, M A; Pollaine, S W; Rosolankova, K; Sadik, B; Schneider, M S; Swift, D; Wark, J; Yaakobi, B

    2005-09-06T23:59:59.000Z

    Solid state experiments at extreme pressures (10-100 GPa) and strain rates ({approx}10{sup 6}-10{sup 8}s{sup -1}) are being developed on high-energy laser facilities, and offer the possibility for exploring new regimes of materials science. These extreme solid-state conditions can be accessed with either shock loading or with a quasi-isentropic ramped pressure drive. Velocity interferometer measurements establish the high pressure conditions. Constitutive models for solid-state strength under these conditions are tested by comparing 2D continuum simulations with experiments measuring perturbation growth due to the Rayleigh-Taylor instability in solid-state samples. Lattice compression, phase, and temperature are deduced from extended x-ray absorption fine structure (EXAFS) measurements, from which the shock-induced {alpha}-{omega} phase transition in Ti and the {alpha}-{var_epsilon} phase transition in Fe are inferred to occur on sub-nanosec time scales. Time resolved lattice response and phase can also be measured with dynamic x-ray diffraction measurements, where the elastic-plastic (1D-3D) lattice relaxation in shocked Cu is shown to occur promptly (< 1 ns). Subsequent large-scale molecular dynamics (MD) simulations elucidate the microscopic dynamics that underlie the 3D lattice relaxation. Deformation mechanisms are identified by examining the residual microstructure in recovered samples. The slip-twinning threshold in single-crystal Cu shocked along the [001] direction is shown to occur at shock strengths of {approx}20 GPa, whereas the corresponding transition for Cu shocked along the [134] direction occurs at higher shock strengths. This slip-twinning threshold also depends on the stacking fault energy (SFE), being lower for low SFE materials. Designs have been developed for achieving much higher pressures, P > 1000 GPa, in the solid state on the National Ignition Facility (NIF) laser.

  5. Effects of dynamic conditions and sheave efficiency on hook load, derrick load, and line tension

    E-Print Network [OSTI]

    Luke, Gregory Robert

    1991-01-01T23:59:59.000Z

    EFFECTS OF DYNAMIC CONDITIONS AND SHEAVE EFFICIENCY ON HOOK LOAD, DERRICK LOAD, AND LINE TENSION A Thesis by GREGORY ROBERT LUKE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1991 Major Subject: Petroleum Engineering EFFECTS OF DYNAMIC CONDITIONS AND SHEAVE EFFICIENCY ON HOOK LOAD, DERRICK LOAD, AND LINE TENSION A Thesis by GREGORY ROBERT LUKE Approved as to style and content by: Hans...

  6. Modeling and Control of SMT Manufacturing Lines Using Hybrid Dynamic Systems

    E-Print Network [OSTI]

    Egerstedt, Magnus

    Modeling and Control of SMT Manufacturing Lines Using Hybrid Dynamic Systems L.G. Barajas1 , A in Surface Mount Technology (SMT) manufacturing. In particular, by closing the loop over the stencil printing of the approach is verified on a real SMT manufacturing line. 1 Introduction To close the loop around the Stencil

  7. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 0, NO. 0, MONTH YEAR 1 On-line Dynamic Security Assessment with Missing

    E-Print Network [OSTI]

    Reisslein, Martin

    IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 0, NO. 0, MONTH YEAR 1 On-line Dynamic Security Assessment is proposed for on-line dynamic security assessment (DSA), with the objective of mitigating the impact of viable small DTs. The security classification decision for on-line DSA is obtained via a weighted voting

  8. Commissioning of the Electron Line of the Linac Coherent Light Source. Dose Rate Measurements and Simulations

    SciTech Connect (OSTI)

    Santana Leitner, M; Bauer, J.M.; Fasso, A.; Liu, J.C.; Mao, X.S.; Prinz, A.; Rokni, H.; /SLAC; Sanami, T.; /SLAC /KEK, Tsukuba; Vollaire, J.; /SLAC

    2009-05-20T23:59:59.000Z

    The Linac Coherent Light Source at the SLAC National Accelerator Laboratory (operated by Stanford University for the US Department of Energy) is the world's first hard X-ray Free Electron Laser machine. It uses high energy electrons delivered by a linac to create ultrafast and brilliant X-ray pulses that can be used as a 'high-speed' camera to obtain images of atoms and molecules. LCLS is a pioneer machine and, as such, its design has encountered unprecedented challenges, the solutions to which will benefit future facilities of its kind across the globe. This article describes the radiation protection aspects of LCLS electron beamlines. Special emphasis is put on the successful commissioning of the LCLS electron line, where, for all examined loss sources, the measured prompt and residual dose rates are in agreement with or below the values predicted through detailed Monte Carlo simulations, used earlier to design the shielding.

  9. Spatiotemporal variation in survival rates: implications for population dynamics of yellow-bellied marmots

    E-Print Network [OSTI]

    Ozgul, Arpat; Armitage, Kenneth; Blumstein, Daniel T.; Oli, Madan K.

    2006-04-01T23:59:59.000Z

    Spatiotemporal variation in age-specific survival rates can profoundly influence population dynamics, but few studies of vertebrates have thoroughly investigated both spatial and temporal variability in age-specific survival rates. We used 28 years...

  10. A dynamic estimation scheme of specific growth rates of bacteria for an anaerobic wastewater treatment process

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ­ the dilution rate and the flow rates of methane and carbon dioxide in the biogas. I. Introduction Before it may. The dynamics of this process are the ones of standard anaerobic digestion, and depend on the type of organic quantities such as the dilution rate and the flow rates of methane and carbon dioxide in the biogas. In [1, 2

  11. Probing Ultrafast Solvation Dynamics with High Repetition-Rate...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ultrafast X-Ray Spectroscopy as a Probe of Nonequilibrium Dynamics in Ruthenium Complexes The Electronic Origin of Photoinduced Strain Modifying Proteins to Combat Disease Higher...

  12. A direct ab inifio dynamics approach for calculating thermal rate constants using variational transition state theory

    E-Print Network [OSTI]

    Truong, Thanh N.

    of a focusing technique to minimize the number of electronic structure calculations, while still preservingA direct ab inifio dynamics approach for calculating thermal rate constants using variational dynamics, " for calculations of thermal rate constants and related properties from first principles

  13. Glass transition line in C60: a mode-coupling/molecular-dynamics study

    E-Print Network [OSTI]

    D. Costa; R. Ruberto; F. Sciortino; M. C. Abramo; C. Caccamo

    2007-03-22T23:59:59.000Z

    We report a study of the mode-coupling theory (MCT) glass transition line for the Girifalco model of C60 fullerene. The equilibrium static structure factor of the model, the only required input for the MCT calculations, is provided by molecular dynamics simulations. The glass transition line develops inside the metastable liquid-solid coexistence region and extends down in temperature, terminating on the liquid sideof the metastable portion of the liquid-vapor binodal. The vitrification locus does not show re-entrant behavior. A comparison with previous computer simulation estimates of the location of the glass line suggests that the theory accurately reproduces the shape of the arrest line in the density-temperature plane. The theoretical HNC and MHNC structure factors (and consequently the corresponding MCT glass line) compare well with the numerical counterpart. These evidences confirm the conclusion drawn in previous works about the existence of a glassy phase for the fullerene model at issue.

  14. A comparison of techniques for on-line monitoring of unit heat rate of coal fired units

    SciTech Connect (OSTI)

    Sarunac, N.; Levy, E. (Lehigh Univ., Bethlehem, PA (USA). Energy Research Center); Williams, S.; Cramer, D. (Potomac Electric Power Co. (US)); Leyse, R. (Electric Power Research Inst., Palo Alto, CA (USA))

    1990-01-01T23:59:59.000Z

    The input/output method is one of the most commonly used approaches for measuring unit performance, but it is rarely used on-line because of difficulties in accurate on-line measurement of coal heating value and flow rate. Two other techniques for monitoring unit heat rate are much more suitable for on-line application. One of these, the boiler turbine cycle efficiency. The output/loss method utilizes information on turbine cycle performance along with measurements of stack gas flow rate, unburned carbon and other commonly available information such as O{sub 2} levels, gas and air temperatures and gross and auxiliary power. This paper provides a summary of the three techniques, describes their characteristics, gives instrumentation requirements and compares accuracies. Guidelines on the applications for which each technique should be considered are also given.

  15. Material property evaluations of bimetallic welds, stainless steel saw fusion lines, and materials affected by dynamic strain aging

    SciTech Connect (OSTI)

    Rudland, D.; Scott, P.; Marschall, C.; Wilkowski, G. [Battelle Memorial Institute, Columbus, OH (United States)

    1997-04-01T23:59:59.000Z

    Pipe fracture analyses can often reasonably predict the behavior of flawed piping. However, there are material applications with uncertainties in fracture behavior. This paper summarizes work on three such cases. First, the fracture behavior of bimetallic welds are discussed. The purpose of the study was to determine if current fracture analyses can predict the response of pipe with flaws in bimetallic welds. The weld joined sections of A516 Grade 70 carbon steel to F316 stainless steel. The crack was along the carbon steel base metal to Inconel 182 weld metal fusion line. Material properties from tensile and C(T) specimens were used to predict large pipe response. The major conclusion from the work is that fracture behavior of the weld could be evaluated with reasonable accuracy using properties of the carbon steel pipe and conventional J-estimation analyses. However, results may not be generally true for all bimetallic welds. Second, the toughness of austenitic steel submerged-arc weld (SAW) fusion lines is discussed. During large-scale pipe tests with flaws in the center of the SAW, the crack tended to grow into the fusion line. The fracture toughness of the base metal, the SAW, and the fusion line were determined and compared. The major conclusion reached is that although the fusion line had a higher initiation toughness than the weld metal, the fusion-line J-R curve reached a steady-state value while the SAW J-R curve increased. Last, carbon steel fracture experiments containing circumferential flaws with periods of unstable crack jumps during steady ductile tearing are discussed. These instabilities are believed to be due to dynamic strain aging (DSA). The paper discusses DSA, a screening criteria developed to predict DSA, and the ability of the current J-based methodologies to assess the effect of these crack instabilities. The effect of loading rate on the strength and toughness of several different carbon steel pipes at LWR temperatures is also discussed.

  16. Modeling exchange rate dependence dynamics at different time horizons

    E-Print Network [OSTI]

    Embrechts, Paul

    , Copula-GARCH, Conditional dependence, Dynamic copula Corresponding author. Tel.: +44(0) 247 657 4297. Financial time-series are often modeled with GARCH type models. In the multivariate GARCH literature there exist several models, like CCC- GARCH, DVEC, matrix-diagonal GARCH, BEKK and principal components GARCH

  17. Dose-rate-effects in XRCC1 wild-type and mutant CHO cell lines using An ²?¹AM source

    E-Print Network [OSTI]

    Chambers, Dwight McCoy

    2008-01-01T23:59:59.000Z

    This work explores the effects of low-dose-rate radiation on both the AA8 (wild-type CHO cells) and EM9 (XRCC1 null CHO mutants) cell lines. In particular, this study performed clonogenic survival and growth assays to ...

  18. Examination of the rate of peptide biosynthesis in neuroendocrine cell lines using a stable isotopic label and mass spectrometry

    E-Print Network [OSTI]

    Tian, Weidong

    isotopic label and mass spectrometry Fa-Yun Che,*,1 Quan Yuan,* ,1 Elena Kalinina* and Lloyd D. Fricker-Leu) and used mass spectrometry to measure the biosynthetic rate of c-lipotropin in the AtT-20 cell lines. Keywords: carboxypeptidase, gamma-lipotropin, insulin, prohormone convertase, proinsulin

  19. RATES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Planning & Projects Power Marketing Rates You are here: SN Home page > Power Marketing > RATES Rates and Repayment Services Rates Current Rates FY 15 PRR worksheet (PDF - 31K) FY...

  20. Two liquid states of matter: A new dynamic line on a phase diagram

    E-Print Network [OSTI]

    V. V. Brazhkin; Yu. D. Fomin; A. G. Lyapin; V. N. Ryzhov; Kostya Trachenko

    2011-07-29T23:59:59.000Z

    It is generally agreed that the supercritical region of a liquid consists of one single state (supercritical fluid). On the other hand, we show here that liquids in this region exist in two qualitatively different states: "rigid" and "non-rigid" liquid. Rigid to non-rigid transition corresponds to the condition {\\tau} ~ {\\tau}0, where {\\tau}is liquid relaxation time and {\\tau}0 is the minimal period of transverse quasi-harmonic waves. This condition defines a new dynamic line on the phase diagram, and corresponds to the loss of shear stiffness of a liquid at all available frequencies, and consequently to the qualitative change of many important liquid properties. We analyze the dynamic line theoretically as well as in real and model liquids, and show that the transition corresponds to the disappearance of high-frequency sound, qualitative changes of diffusion and viscous flow, increase of particle thermal speed to half of the speed of sound and reduction of the constant volume specific heat to 2kB per particle. In contrast to the Widom line that exists near the critical point only, the new dynamic line is universal: it separates two liquid states at arbitrarily high pressure and temperature, and exists in systems where liquid - gas transition and the critical point are absent overall.

  1. TheRate: Program for Ab Initio Direct Dynamics Calculations of Thermal and

    E-Print Network [OSTI]

    Truong, Thanh N.

    , and the convergence of the rate constants with respect to the number of electronic structure calculations. 1998 John is that such limited potential energy information may be obtained from accurate electronic structure calculations-- --Dynamics Calculations of Thermal and Vibrational

  2. RATES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    RATES Rates Document Library SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on...

  3. Power-system dynamic equivalents:coherency recognition via the rate of change of

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    .F.I.M.A. Indexing terms: Power systems and plant, Simulation, Time-varying parameters, Dynamic equivalents AbstractPower-system dynamic equivalents:coherency recognition via the rate of change of kinetic energy H of sections of a power system, its main drawback being the extensive computation times required to recognise

  4. Microscopic theory of protein folding rates. II. Local reaction coordinates and chain dynamics

    E-Print Network [OSTI]

    Takada, Shoji

    Microscopic theory of protein folding rates. II. Local reaction coordinates and chain dynamics John involved in barrier crossing for protein folding are investigated in terms of the chain dynamics of the polymer backbone, completing the microscopic description of protein folding presented in the preceding

  5. Dynamic tensile fracture of mortar at ultra-high strain-rates

    SciTech Connect (OSTI)

    Erzar, B., E-mail: benjamin.erzar@cea.fr; Buzaud, E.; Chanal, P.-Y. [CEA, DAM, GRAMAT, F-46500 Gramat (France)

    2013-12-28T23:59:59.000Z

    During the lifetime of a structure, concrete and mortar may be exposed to highly dynamic loadings, such as impact or explosion. The dynamic fracture at high loading rates needs to be well understood to allow an accurate modeling of this kind of event. In this work, a pulsed-power generator has been employed to conduct spalling tests on mortar samples at strain-rates ranging from 2 × 10{sup 4} to 4 × 10{sup 4}?s{sup ?1}. The ramp loading allowed identifying the strain-rate anytime during the test. A power law has been proposed to fit properly the rate-sensitivity of tensile strength of this cementitious material over a wide range of strain-rate. Moreover, a specimen has been recovered damaged but unbroken. Micro-computed tomography has been employed to study the characteristics of the damage pattern provoked by the dynamic tensile loading.

  6. Dynamics in the Metabasin Space of a Lennard-Jones Glass Former: Connectivity and Transition Rates

    E-Print Network [OSTI]

    Yasheng Yang; Bulbul Chakraborty

    2008-11-17T23:59:59.000Z

    Using simulations, we construct the effective dynamics in metabasin space for a Lennard-Jones glass-former. Metabasins are identified via a scheme that measures transition rates between inherent structures, and generates clusters of inherent structures by drawing in branches that have the largest transition rates. The effective dynamics is shown to be Markovian but differs significantly from the simplest trap models. We specifically show that retaining information about the connectivity in metabasin space is crucial for reproducing the slow dynamics observed in this system.

  7. Rate models with delays and the dynamics of large networks of spiking neurons

    E-Print Network [OSTI]

    Roxin, Alex

    1 Rate models with delays and the dynamics of large networks of spiking neurons Alex Roxin, Nicolas in a reduced rate model provided that the interactions are delayed. §1. Introduction Simplified models of large transformation through a sigmoidal input-output transfer function. Network models of spiking neurons can

  8. Dynamic behavior of an aggregate material at simultaneous high pressure and strain rate: SHPB triaxial tests

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Dynamic behavior of an aggregate material at simultaneous high pressure and strain rate: SHPB Low velocity impacts on energetic materials induce plastic deformations and sliding friction which can pressure and high strain rate). Thus, a technique based on the Split Hopkinson Pressure Bars system

  9. RATES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Marketing > RATES RATES Current Rates Past Rates 2006 2007 2008 2009 2010 2011 2012 Rates Schedules Power CV-F13 CPP-2 Transmissions CV-T3 CV-NWT5 PACI-T3 COTP-T3 CV-TPT7 CV-UUP1...

  10. Development of a New Shielding Model for JB-Line Dose Rate Calculations

    SciTech Connect (OSTI)

    Buckner, M.R.

    2001-08-09T23:59:59.000Z

    This report describes the shielding model development for the JB-Line Upgrade project. The product of this effort is a simple-to-use but accurate method of estimating the personnel dose expected for various operating conditions on the line. The current techniques for shielding calculations use transport codes such as ANISN which, while accurate for geometries which can be accurately approximated as one dimensional slabs, cylinders or spheres, fall short in calculating configurations in which two-or three-dimensional effects (e.g., streaming) play a role in the dose received by workers.

  11. PROSPECTS FOR DYNAMIC TRANSMISSION CIRCUIT RATINGS K. E. Holbert, G. T. Heydt

    E-Print Network [OSTI]

    transmission line thermal ratings take on increased importance in the deregulated electric power industry, since transmission capacity is sold as a deregulated commodity. Also, the electric utilities are under pressure to utilize all their transmission resources to the fullest. 1. INTRODUCTION The U.S. electric

  12. Two liquid states of matter: A new dynamic line on a phase diagram

    E-Print Network [OSTI]

    Brazhkin, V V; Lyapin, A G; Ryzhov, V N; Trachenko, Kostya

    2011-01-01T23:59:59.000Z

    It is generally agreed that the supercritical region of a liquid consists of one single state (supercritical fluid). On the other hand, we show here that liquids in this region exist in two qualitatively different states: "rigid" and "non-rigid" liquid. Rigid to non-rigid transition corresponds to the condition {\\tau} ~ {\\tau}0, where {\\tau} is liquid relaxation time and {\\tau}0 is the minimal period of transverse waves. This condition defines a new dynamic line on the phase diagram, and corresponds to the loss of shear stiffness of a liquid at all available frequencies, and consequently to the qualitative change of many important liquid properties. We analyze the dynamic line theoretically as well as in real and model liquids, and show that the transition corresponds to the disappearance of high-frequency sound, qualitative changes of diffusion and viscous flow increase of particle thermal speed to half of the speed of sound and reduction of the constant volume specific heat to 2kB per particle. In contrast ...

  13. Rate Shaping by Block Dropping for Transmission of MPEGprecoded Video over Channels of Dynamic Bandwidth

    E-Print Network [OSTI]

    Zeng, Wenjun "Kevin"

    ) and much better visual quality than conventional ap­ proaches. We also show that by jointly dropping blocksRate Shaping by Block Dropping for Transmission of MPEG­precoded Video over Channels of Dynamic of the compressed video in cases that the network capacity is reduced. This pa­ per proposes a novel block

  14. A MODEL FOR EXPERIMENTALLY-OBSERVED HIGH-STRAIN-RATE DYNAMIC STRAIN AGING IN TITANIUM

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    A MODEL FOR EXPERIMENTALLY-OBSERVED HIGH- STRAIN-RATE DYNAMIC STRAIN AGING IN TITANIUM JINGYI CHENG an anomalous response by commercially pure titanium at relatively high temperatures: for a ®xed high strain seems to accurately predict the response of commercially pure titanium, over a broad range of strain

  15. Microfluidic chemostat and turbidostat with flow rate, oxygen, and temperature control for dynamic continuous culture

    E-Print Network [OSTI]

    Sinskey, Anthony J.

    Microfluidic chemostat and turbidostat with flow rate, oxygen, and temperature control for dynamic are not reasonable. Microfluidics offers a way to address the difficulties relating to conventional continuous.4 Integrating all of these microfluidic components into a working continuous culture system can

  16. Microscopic Theory of Protein Folding Rates.II: Local Reaction Coordinates and Chain Dynamics

    E-Print Network [OSTI]

    John J. Portman; Shoji Takada; Peter G. Wolynes

    2000-08-30T23:59:59.000Z

    The motion involved in barrier crossing for protein folding are investigated in terms of the chain dynamics of the polymer backbone, completing the microscopic description of protein folding presented in the previous paper. Local reaction coordinates are identified as collective growth modes of the unstable fluctuations about the saddle-points in the free energy surface. The description of the chain dynamics incorporates internal friction (independent of the solvent viscosity) arising from the elementary isomerizations of the backbone dihedral angles. We find that the folding rate depends linearly on the solvent friction for high viscosity, but saturates at low viscosity because of internal friction. For $\\lambda$-repressor, the calculated folding rate prefactor, along with the free energy barrier from the variational theory, gives a folding rate that agrees well with the experimentally determined rate under highly stabilizing conditions, but the theory predicts too large a folding rate at the transition midpoint. This discrepancy obtained using a fairly complete quantitative theory inspires a new set of questions about chain dynamics, specifically detailed motions in individual contact formation.

  17. Should Thermostatted Ring Polymer Molecular Dynamics be used to calculate reaction rates?

    E-Print Network [OSTI]

    Hele, Timothy J H

    2015-01-01T23:59:59.000Z

    We apply Thermostatted Ring Polymer Molecular Dynamics (TRPMD), a recently-proposed approximate quantum dynamics method, to the computation of thermal reaction rates. Its short-time Transition-State Theory (TST) limit is identical to rigorous Quantum Transition-State Theory, and we find that its long-time limit is independent of the location of the dividing surface. TRPMD rate theory is then applied to one-dimensional model systems, the atom-diatom bimolecular reactions H+H$_2$, D+MuH and F+H$_2$, and the prototypical polyatomic reaction H+CH$_4$. Above the crossover temperature, the TRPMD rate is virtually invariant to the strength of the friction applied to the internal ring-polymer normal modes, and beneath the crossover temperature the TRPMD rate generally decreases with increasing friction, in agreement with the predictions of Kramers theory. We therefore find that TRPMD is less accurate than Ring Polymer Molecular Dynamics (RPMD) for symmetric reactions, and in certain asymmetric systems closer to the q...

  18. Bayesian analysis of joint strong gravitational lensing and dynamic galactic mass in SLACS: evidence of line-of-sight contamination

    E-Print Network [OSTI]

    Antonio C. C. Guimarães; Laerte Sodré Jr.

    2007-06-21T23:59:59.000Z

    We readdress the calculation of the mass of early-type galaxies using strong gravitational lensing and stellar dynamics. Our sample comprises 27 galaxies in the Sloan Lens ACS (SLACS) Survey. Comparing the mass estimates from these two independent methods in a Bayesian framework, we find evidence of significant line-of-sight mass contamination. Assuming a power-law mass distribution, the best fit density profile is given by $\\rho \\propto r^{-1.69\\pm0.05}$. We show that neglecting the line-of-sight mass contamination produces an overestimate of the mass attributed to the lens-galaxy by the lensing method, which introduces a bias in favor of a SIS profile when using the joint lensing and dynamic analysis to determine the slope of the density profile. We suggest that the line-of-sight contamination could also be important for other astrophysical and cosmological uses of joint lensing and dynamical measurements.

  19. Extending the Capabilities of the Mooring Analysis Program: A Survey of Dynamic Mooring Line Theories for Integration into FAST: Preprint

    SciTech Connect (OSTI)

    Masciola, M.; Jonkman, J.; Robertson, A.

    2014-03-01T23:59:59.000Z

    Techniques to model dynamic mooring lines come in various forms. The most widely used models include either a heuristic representation of the physics (such as a Lumped-Mass, LM, system), a Finite-Element Analysis (FEA) discretization of the lines (discretized in space), or a Finite-Difference (FD) model (which is discretized in both space and time). In this paper, we explore the features of the various models, weigh the advantages of each, and propose a plan for implementing one dynamic mooring line model into the open-source Mooring Analysis Program (MAP). MAP is currently used as a module for the FAST offshore wind turbine computer-aided engineering (CAE) tool to model mooring systems quasi-statically, although dynamic mooring capabilities are desired. Based on the exploration in this manuscript, the lumped-mass representation is selected for implementation in MAP based on its simplicity, computational cost, and ability to provide similar physics captured by higher-order models.

  20. Anomalous Dynamical Line Shapes in a Quantum Magnet at Finite Temperature

    SciTech Connect (OSTI)

    Tennant D. A.; James A.; Lake, B.; Essler, F.H.L.; Notbohm, S.; Mikeska, H.-J.; Fielden, J.; Kogerler,, P.; Canfield, P.C.; Telling, M.T.F.

    2012-01-04T23:59:59.000Z

    The effect of thermal fluctuations on the dynamics of a gapped quantum magnet is studied using inelastic neutron scattering on copper nitrate, a model material for the spin-1/2, one-dimensional (1D) bond alternating Heisenberg chain. A large, highly deuterated, single-crystal sample of copper nitrate is produced using a solution growth method and measurements are made using the high-resolution backscattering spectrometer OSIRIS at the ISIS Facility. Theoretical calculations and numerical analysis are combined to interpret the physical origin of the thermal effects observed in the magnetic spectra. The primary observations are (1) a thermally induced central peak due to intraband scattering, which is similar to Villain scattering familiar from soliton systems in 1D, and (2) the one-magnon quasiparticle pole is seen to develop with temperature into an asymmetric continuum of scattering. We relate this asymmetric line broadening to a thermal strongly correlated state caused by hard-core constraints and quasiparticle interactions. These findings are a counter example to recent assertions of the universality of line broadening in 1D systems and are applicable to a broad range of quantum systems.

  1. A Dynamic Feedback Model for High Repetition Rate LINAC-Driven FELS

    SciTech Connect (OSTI)

    Mellado Munoz, M.; Doolittle, L.; Emma, P.; Huang, G.; Ratti, A.; Serrano, C.; Byrd, J. M.

    2012-05-20T23:59:59.000Z

    One of the concepts for the next generation of linacdriven FELs is a CW superconducting linac driving an electron beam with MHz repetition rates. One of the challenges for next generation FELs is improve the stability of the xray pulses by improving the shot-to-shot stability of the energy, charge, peak current, and timing jitter of the electron beam. A high repetition rate FEL with a CW linac presents an opportunity to use a variety of broadband feedbacks to stabilize the beam parameters. To understand the performance of such a feedback system, we are developing a dynamic model of the machine with a focus on the longitudinal beam properties. The model is being developed as an extension of the LITrack code and includes the dynamics of the beam-cavity interaction, RF feedback, beam-based feedback, and multibunch effects. In this paper, we present a detailed description of this model.

  2. 186 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 48, NO. 2, FEBRUARY 2003 Pose Estimation Using Line-Based Dynamic Vision

    E-Print Network [OSTI]

    Ghosh, Bijoy K.

    been numerous attempts to combine the above men- tioned sensors by using different heuristics Line-Based Dynamic Vision and Inertial Sensors Henrik Rehbinder, Member, IEEE, and Bijoy K. Ghosh. Rigid body pose estimation using iner- tial sensors and a monocular camera is considered and it is shown

  3. The rate constant for radiative association of HF: Comparing quantum and classical dynamics

    SciTech Connect (OSTI)

    Gustafsson, Magnus, E-mail: magngu@chem.gu.se; Monge-Palacios, M.; Nyman, Gunnar [Department of Chemistry and Molecular Biology, University of Gothenburg, 41296 Gothenburg (Sweden)] [Department of Chemistry and Molecular Biology, University of Gothenburg, 41296 Gothenburg (Sweden)

    2014-05-14T23:59:59.000Z

    Radiative association for the formation of hydrogen fluoride through the A{sup 1}? ? X{sup 1}?{sup +} and X{sup 1}?{sup +} ? X{sup 1}?{sup +} transitions is studied using quantum and classical dynamics. The total thermal rate constant is obtained for temperatures from 10 K to 20 000 K. Agreement between semiclassical and quantum approaches is observed for the A{sup 1}? ? X{sup 1}?{sup +} rate constant above 2000 K. The agreement is explained by the fact that the corresponding cross section is free of resonances for this system. At temperatures below 2000 K we improve the agreement by implementing a simplified semiclassical expression for the rate constant, which includes a quantum corrected pair distribution. The rate coefficient for the X{sup 1}?{sup +} ? X{sup 1}?{sup +} transition is calculated using Breit–Wigner theory and a classical formula for the resonance and direct contributions, respectively. In comparison with quantum calculations the classical formula appears to overestimate the direct contribution to the rate constant by about 12% for this transition. Below about 450 K the resonance contribution is larger than the direct, and above that temperature the opposite holds. The biggest contribution from resonances is at the lowest temperature in the study, 10 K, where it is more than four times larger than the direct. Below 1800 K the radiative association rate constant due to X{sup 1}?{sup +} ? X{sup 1}?{sup +} transitions dominates over A{sup 1}? ? X{sup 1}?{sup +}, while above that temperature the situation is the opposite.

  4. The loss rates of O{sup +} in the inner magnetosphere caused by both magnetic field line curvature scattering and charge exchange reactions

    SciTech Connect (OSTI)

    Ji, Y., E-mail: yji@spaceweather.ac.cn [State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China); College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049 (China); Shen, C. [State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China)] [State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-03-15T23:59:59.000Z

    With consideration of magnetic field line curvature (FLC) pitch angle scattering and charge exchange reactions, the O{sup +} (>300?keV) in the inner magnetosphere loss rates are investigated by using an eigenfunction analysis. The FLC scattering provides a mechanism for the ring current O{sup +} to enter the loss cone and influence the loss rates caused by charge exchange reactions. Assuming that the pitch angle change is small for each scattering event, the diffusion equation including a charge exchange term is constructed and solved; the eigenvalues of the equation are identified. The resultant loss rates of O{sup +} are approximately equal to the linear superposition of the loss rate without considering the charge exchange reactions and the loss rate associated with charge exchange reactions alone. The loss time is consistent with the observations from the early recovery phases of magnetic storms.

  5. GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 15, doi:10.1002/2013GL057942, 2013 Elastic dynamics and tidal migration of grounding lines modify

    E-Print Network [OSTI]

    Sayag, Roiy

    using elastic models included only the floating shelves, clamped at a fixed GL over a stiff bed (stiff-fixed the dynamics of ice, bed, and ocean in a new elastic model for the tidal-timescale migration of grounding lines with fixed grounding lines were found to be inconsistent, suggesting an elasticity of ice that varies

  6. IN-LINE HIGH-RATE DEPOSITION OF ALUMINUM ONTO RISE SOLAR CELLS BY ELECTRON BEAM TECHNOLOGY

    E-Print Network [OSTI]

    of solar cells has an important role herein, since the contact quality strongly influences the electrical of contacts is one of the technical challenges of this process step. The front contact lines must be as narrow to carry the generated current with only few resistance losses. Back contacted solar cells offer

  7. Quantum dynamics of a four-well Bose-Hubbard model with two different tunneling rates

    SciTech Connect (OSTI)

    Chianca, C.V.; Olsen, M.K. [ARC Centre of Excellence for Quantum-Atom Optics, School of Mathematics and Physics, University of Queensland, Brisbane QLD 4072 (Australia)

    2011-04-15T23:59:59.000Z

    We consider a theoretical model of a four-mode Bose-Hubbard model consisting of two pairs of wells coupled via two processes with two different rates. The model is naturally divided into two subsystems with strong intrasystem coupling and much weaker coupling between the two subsystems and has previously been introduced as a model for Josephson heat oscillations by Strzys and Anglin [Phys. Rev. A 81, 043616 (2010)]. We examine the quantum dynamics of this model for a range of different initial conditions, in terms of both the number distribution among the wells and the quantum statistics. We find that the time evolution is different to that predicted by a mean-field model and that this system exhibits a wide range of interesting behaviours. We find that the system equilibrates to a maximum entropy state and is thus a useful model for quantum thermalisation. As our model may be realized to a good approximation in the laboratory, it becomes a candidate for experimental investigation.

  8. Semiclassical pair production rate for time-dependent electrical fields with more than one component: -WKB-approach and world-line instantons

    E-Print Network [OSTI]

    Eckhard Strobel; She-Sheng Xue

    2014-07-18T23:59:59.000Z

    We present an analytic calculation of the semiclassical electron-positron pair creation rate by time-dependent electrical fields. We use two methods, first the imaginary time method in the WKB-approximation and second the world-line instanton approach. The analytic tools for both methods are generalized to time-dependent electric fields with more than one component. For the WKB method an expansion of the momentum spectrum of produced pairs around the canonical momentum $\\vec{P}=0$ is presented which simplifies the computation of the pair creation rate. We argue that the world-line instanton method of [Dunne et al., Phys. Rev. D73, 065028 (2006)] implicitly performs this expansion of the momentum spectrum around $\\vec{P}=0$. Accordingly the generalization to more than one component is shown to agree with the WKB result obtained via this expansion. However the expansion is only a good approximation for the cases where the momentum spectrum is peaked around $\\vec{P}=0$. Thus the expanded WKB result and the world-line instanton method of [Dunne et al., Phys. Rev. D73, 065028 (2006)] as well as the generalized method presented here are only applicable in these cases. We study the two component case of a rotating electric field and find a new analytic closed form for the momentum spectrum using the generalized WKB method. The momentum spectrum for this field is not peaked around $\\vec{P}=0$.

  9. Combustor oscillation attenuation via the control of fuel-supply line dynamics

    DOE Patents [OSTI]

    Richards, George A. (Morgantown, WV); Gemmen, Randall S. (Morgantown, WV)

    1998-01-01T23:59:59.000Z

    Combustion oscillation control in combustion systems using hydrocarbon fuels is provided by acoustically tuning a fuel-delivery line to a desired phase of the combustion oscillations for providing a pulse of a fuel-rich region at the oscillating flame front at each time when the oscillation produced pressure in the combustion chamber is in a low pressure phase. The additional heat release produced by burning such fuel-rich regions during low combustion chamber pressure effectively attenuates the combustion oscillations to a selected value.

  10. Combustor oscillation attenuation via the control of fuel-supply line dynamics

    DOE Patents [OSTI]

    Richards, G.A.; Gemmen, R.S.

    1998-09-22T23:59:59.000Z

    Combustion oscillation control in combustion systems using hydrocarbon fuels is provided by acoustically tuning a fuel-delivery line to a desired phase of the combustion oscillations for providing a pulse of a fuel-rich region at the oscillating flame front at each time when the oscillation produced pressure in the combustion chamber is in a low pressure phase. The additional heat release produced by burning such fuel-rich regions during low combustion chamber pressure effectively attenuates the combustion oscillations to a selected value. 9 figs.

  11. Evaluation of Canal Lining Projects in the Lower Rio Grande Valley of Texas: 2011 Ratings and Analysis

    E-Print Network [OSTI]

    Bonaiti, Gabriele; Karimov, Askar; Fipps, Guy

    IN THE LOWER RIO GRANDE VALLEY OF TEXAS 2011 Ratings and Analysis October 7, 2011 By Gabriele Bonaiti Extension Associate Askar Karimov Extension Associate Guy Fipps, P.E. Professor and Extension Agricultural Engineer... Texas AgriLife Extension Service Irrigation Technology Center Biological and Agricultural Engineering 2117 TAMU College Station, TX 77843?2117 979?845?3977; http://idea.tamu.edu - 3 - EXECUTIVE SUMMARY Since 1999, nine (9) irrigation...

  12. Dynamics of Line-Driven Disk Winds in Active Galactic Nuclei II: Effects of Disk Radiation

    E-Print Network [OSTI]

    D. Proga; T. R. Kallman

    2004-08-16T23:59:59.000Z

    We explore consequences of a radiation driven disk wind model for mass outflows from active galactic nuclei (AGN). We performed axisymmetric time-dependent hydrodynamic calculations using the same computational technique as Proga, Stone and Kallman (2000). We test the robustness of radiation launching and acceleration of the wind for relatively unfavorable conditions. In particular, we take into account the central engine radiation as a source of ionizing photons but neglect its contribution to the radiation force. Additionally, we account for the attenuation of the X-ray radiation by computing the X-ray optical depth in the radial direction assuming that only electron scattering contributes to the opacity. Our new simulations confirm the main result from our previous work: the disk atmosphere can 'shield' itself from external X-rays so that the local disk radiation can launch gas off the disk photosphere. We also find that the local disk force suffices to accelerate the disk wind to high velocities in the radial direction. This is true provided the wind does not change significantly the geometry of the disk radiation by continuum scattering and absorption processes; we discuss plausibility of this requirement. Synthetic profiles of a typical resonance ultraviolet line predicted by our models are consistent with observations of broad absorption line (BAL) QSOs.

  13. Standing crop dynamics under simulated short-duration grazing at four stocking rates

    E-Print Network [OSTI]

    Casco, Jose Francisco

    1984-01-01T23:59:59.000Z

    temperature (4 C ) for the years 1981 and 1982 and the 30-year average for the period 1951-1982, from Easterwood Airport, College Station, Texas. 17 Table 3. Grazing cycles, dates, days grazed, number of animals used, and average weight for a simulated... variable occurred when stocking rate increased. c) No changes in the mean response variable occurred across grazing cycles. LITERATURE REVIEW Stocking Rate and Animal Relationships Stocking rate has been defined as the accumulative forage demand per...

  14. Dynamic estimation of specific growth rates and concentrations of bacteria for the anaerobic digestion

    E-Print Network [OSTI]

    Boyer, Edmond

    measured quantities ­ the dilution rate and the flow rates of methane and carbon dioxide in the biogas by microorganisms into biogas (methane and carbon dioxide) and digestate (natural manure) in the absence of oxygen [1, 2, 6]. The biogas is an additional energy source and the methane is a greenhouse gas

  15. Effect of flow rate of ethanol on growth dynamics of VA-SWNT -Transition from no-flow CVD to normal ACCVD

    E-Print Network [OSTI]

    Maruyama, Shigeo

    Effect of flow rate of ethanol on growth dynamics of VA-SWNT - Transition from no-flow CVD a growth model [2]. In this study, the flow rate of ethanol during the CVD was controlled precisely. Figure 1 shows the growth curve of VA-SWNT film for various ethanol flow rates. In the figure, "No

  16. The influence of vegetation on frost dynamics, infiltration rate and surface stability in Icelandic Andisolic rangelands

    E-Print Network [OSTI]

    Orradottir, Berglind

    2002-01-01T23:59:59.000Z

    only occurred where vegetation cover was sparse. Seasonal changes in infiltration rates, measured with double-ring infiltrometers, varied with soil frost depth and type, as indicated by the depth of visible ice crystals and size and number of ice...

  17. Computational Fluid Dynamics (CFD) Modeling for High Rate Pulverized Coal Injection (PCI) into the Blast Furnace

    SciTech Connect (OSTI)

    Dr. Chenn Zhou

    2008-10-15T23:59:59.000Z

    Pulverized coal injection (PCI) into the blast furnace (BF) has been recognized as an effective way to decrease the coke and total energy consumption along with minimization of environmental impacts. However, increasing the amount of coal injected into the BF is currently limited by the lack of knowledge of some issues related to the process. It is therefore important to understand the complex physical and chemical phenomena in the PCI process. Due to the difficulty in attaining trus BF measurements, Computational fluid dynamics (CFD) modeling has been identified as a useful technology to provide such knowledge. CFD simulation is powerful for providing detailed information on flow properties and performing parametric studies for process design and optimization. In this project, comprehensive 3-D CFD models have been developed to simulate the PCI process under actual furnace conditions. These models provide raceway size and flow property distributions. The results have provided guidance for optimizing the PCI process.

  18. Development of High Rate Coating Technology for Low Cost Electrochromic Dynamic Windows

    SciTech Connect (OSTI)

    Kwak, B.; Joshi, Ajey

    2013-03-31T23:59:59.000Z

    Objectives of the Project: The objective of this project was to develop and demonstrate the feasibility of depositing critical electrochromic layers at high rate using new novel vacuum coating sources, to develop a full electrochromic process flow by combining conventional processes with new deposition sources, to characterize, test, evaluate, and optimize the resulting coatings and devices, and, to demonstrate an electrochromic device using the new process flow and sources. As addendum objectives, this project was to develop and demonstrate direct patterning methods with novel integration schemes. The long term objective, beyond this program, is to integrate these innovations to enable production of low-cost, high-performance electrochromic windows produced on highly reliable and high yielding manufacturing equipment and systems.

  19. Cooling rate and size effects on the medium-range structure of multicomponent oxide glasses simulated by molecular dynamics

    SciTech Connect (OSTI)

    Tilocca, Antonio [Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ (United Kingdom)] [Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ (United Kingdom)

    2013-09-21T23:59:59.000Z

    A set of molecular dynamics simulations were performed to investigate the effect of cooling rate and system size on the medium-range structure of melt-derived multicomponent silicate glasses, represented by the quaternary 45S5 Bioglass composition. Given the significant impact of the glass degradation on applications of these materials in biomedicine and nuclear waste disposal, bulk structural features which directly affect the glass dissolution process are of particular interest. Connectivity of the silicate matrix, ion clustering and nanosegregation, distribution of ring and chain structural patterns represent critical features in this context, which can be directly extracted from the models. A key issue is represented by the effect of the computational approach on the corresponding glass models, especially in light of recent indications questioning the suitability of conventional MD approaches (that is, involving melt-and-quench of systems containing ?10{sup 3} atoms at cooling rates of 5-10 K/ps) when applied to model these glasses. The analysis presented here compares MD models obtained with conventional and nonconventional cooling rates and system sizes, highlighting the trend and range of convergence of specific structural features in the medium range. The present results show that time-consuming computational approaches involving much lower cooling rates and/or significantly larger system sizes are in most cases not necessary in order to obtain a reliable description of the medium-range structure of multicomponent glasses. We identify the convergence range for specific properties and use them to discuss models of several glass compositions for which a possible influence of cooling-rate or size effects had been previously hypothesized. The trends highlighted here represent an important reference to obtain reliable models of multicomponent glasses and extract converged medium-range structural features which affect the glass degradation and thus their application in different fields. In addition, as a first application of the present findings, the fully converged structure of the 45S5 glass was further analyzed to shed new light on several dissolution-related features whose interpretation has been rather controversial in the past.

  20. Evaluation of Methods for Predicting Seepage Loss Rates for the Hard Lined Irrigation Canals of the Lower Rio Grande Valley of Texas

    E-Print Network [OSTI]

    Leigh, Eric

    2014-01-15T23:59:59.000Z

    on 32 canal sections. The condition rating scores were evaluated for 26 of these canals. Test calculation revisions and testing errors were first evaluated to understand the potential impacts to the seepage loss rates and condition rating system...

  1. Preliminary Comparison of Reaction Rate theory and Object Kinetic Monte Carlo Simulations of Defect Cluster Dynamics under Irradiation

    SciTech Connect (OSTI)

    Stoller, Roger E [ORNL; Golubov, Stanislav I [ORNL; Becquart, C. S. [Universite de Lille; Domain, C. [EDF R& D, Clamart, France

    2006-09-01T23:59:59.000Z

    The multiscale modeling scheme encompasses models from the atomistic to the continuum scale. Phenomena at the mesoscale are typically simulated using reaction rate theory (RT), Monte Carlo (MC), or phase field models. These mesoscale models are appropriate for application to problems that involve intermediate length scales ( m to >mm), and timescales from diffusion (~ s) to long-term microstructural evolution (~years). Phenomena at this scale have the most direct impact on mechanical properties in structural materials of interest to nuclear energy systems, and are also the most accessible to direct comparison between the results of simulations and experiments. Recent advances in computational power have substantially expanded the range of application for MC models. Although the RT and MC models can be used simulate the same phenomena, many of the details are handled quite differently in the two approaches. A direct comparison of the RT and MC descriptions has been made in the domain of point defect cluster dynamics modeling, which is relevant to both the nucleation and evolution of radiation-induced defect structures. The relative merits and limitations of the two approaches are discussed, and the predictions of the two approaches are compared for specific irradiation conditions.

  2. Dependence of Turing pattern wavelength on diffusion rate Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Austin,

    E-Print Network [OSTI]

    Texas at Austin. University of

    Dependence of Turing pattern wavelength on diffusion rate Qi Ouyang Center for Nonlinear Dynamics of reactants and the wavelength of Turing patterns is examined in experiments on the chlorite 0.13­ 0.28 mm varies in accord with the predicted relation for Turing patterns, D1/2 . Moreover

  3. Video-rate optical dosimetry and dynamic visualization of IMRT and VMAT treatment plans in water using Cherenkov radiation

    SciTech Connect (OSTI)

    Glaser, Adam K., E-mail: Adam.K.Glaser@dartmouth.edu, E-mail: Brian.W.Pogue@dartmouth.edu; Andreozzi, Jacqueline M.; Davis, Scott C. [Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755 (United States)] [Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755 (United States); Zhang, Rongxiao [Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755 (United States)] [Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755 (United States); Pogue, Brian W., E-mail: Adam.K.Glaser@dartmouth.edu, E-mail: Brian.W.Pogue@dartmouth.edu [Department of Physics and Astronomy and Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755 (United States); Fox, Colleen J.; Gladstone, David J. [Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 03766 (United States)] [Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 03766 (United States)

    2014-06-15T23:59:59.000Z

    Purpose: A novel technique for optical dosimetry of dynamic intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) plans was investigated for the first time by capturing images of the induced Cherenkov radiation in water. Methods: A high-sensitivity, intensified CCD camera (ICCD) was configured to acquire a two-dimensional (2D) projection image of the Cherenkov radiation induced by IMRT and VMAT plans, based on the Task Group 119 (TG-119) C-Shape geometry. Plans were generated using the Varian Eclipse treatment planning system (TPS) and delivered using 6 MV x-rays from a Varian TrueBeam Linear Accelerator (Linac) incident on a water tank doped with the fluorophore quinine sulfate. The ICCD acquisition was gated to the Linac target trigger pulse to reduce background light artifacts, read out for a single radiation pulse, and binned to a resolution of 512 × 512 pixels. The resulting videos were analyzed temporally for various regions of interest (ROI) covering the planning target volume (PTV) and organ at risk (OAR), and summed to obtain an overall light intensity distribution, which was compared to the expected dose distribution from the TPS using a gamma-index analysis. Results: The chosen camera settings resulted in 23.5 frames per second dosimetry videos. Temporal intensity plots of the PTV and OAR ROIs confirmed the preferential delivery of dose to the PTV versus the OAR, and the gamma analysis yielded 95.9% and 96.2% agreement between the experimentally captured Cherenkov light distribution and expected TPS dose distribution based upon a 3%/3 mm dose difference and distance-to-agreement criterion for the IMRT and VMAT plans, respectively. Conclusions: The results from this initial study demonstrate the first documented use of Cherenkov radiation for video-rate optical dosimetry of dynamic IMRT and VMAT treatment plans. The proposed modality has several potential advantages over alternative methods including the real-time nature of the acquisition, and upon future refinement may prove to be a robust and novel dosimetry method with both research and clinical applications.

  4. THE JOURNAL OF CHEMICAL PHYSICS 138, 244310 (2013) Molecular dynamics simulations for CO2 spectra. IV. Collisional line-mixing

    E-Print Network [OSTI]

    Boyer, Edmond

    2013-01-01T23:59:59.000Z

    atmosphere of Venus (about 96.5% of CO2) where the pressure is high (up to 90 bar). Similarly, narrow involving CO2 with a few for the pure gas in the infrared at high pressure12­17 and Raman Q branches.4THE JOURNAL OF CHEMICAL PHYSICS 138, 244310 (2013) Molecular dynamics simulations for CO2 spectra

  5. Relation Between the Widom Line and the Dynamic Crossover in Bulk Water and in Protein Hydration Water

    E-Print Network [OSTI]

    Stanley, H. Eugene

    are the derivatives of the state functions with respect to temperature [e.g., isobaric heat capacity CP (H/T)P ] have displaying a liquid-liquid critical point, the relation between changes in dynamic and thermodynamic anomalies arising from the presence of the liquid-liquid critical point. We find a correlation between

  6. INTEGRATION TECHNOLOGIES FOR AN 8X8 INP-BASED MONOLITHIC TUNABLE OPTICAL ROUTER WITH 40GB/S LINE RATE PER PORT

    E-Print Network [OSTI]

    Coldren, Larry A.

    INTEGRATION TECHNOLOGIES FOR AN 8X8 INP-BASED MONOLITHIC TUNABLE OPTICAL ROUTER WITH 40GB/S LINE developed to demonstrate an 8x8 InP-based monolithic tunable optical router capable of 40 Gbps operation per typically depends on the device requirements, there is not a one-size fits all integration solution. However

  7. Dynamic Assessment of Baroreflex Control of Heart Rate During Induction of Propofol Anesthesia Using a Point Process Method

    E-Print Network [OSTI]

    Chen, Zhe

    In this article, we present a point process method to assess dynamic baroreflex sensitivity (BRS) by estimating the baroreflex gain as focal component of a simplified closed-loop model of the cardiovascular system. ...

  8. Dynamic response of marshes to perturbations in suspended sediment concentrations and rates of relative sea level rise

    E-Print Network [OSTI]

    of relative sea level rise A. D'Alpaos,1 S. M. Mudd,2,3 and L. Carniello4 Received 18 May 2011; revised 5 in suspended sediment concentrations, plant productivity, and the rate of relative sea level rise (RSLR in suspended sediment concentrations and rates of relative sea level rise, J. Geophys. Res., 116, F04020, doi

  9. Statistical mechanical analysis of the dynamics of learning in perceptrons

    E-Print Network [OSTI]

    Coolen, ACC "Ton"

    with constant learning rate 2.5. Theory versus simulations 3. On-line learning: complete training setsStatistical mechanical analysis of the dynamics of learning in perceptrons C. W. H. MACE and A. C to analyse the dynamics of various classes of supervised learning rules in perceptrons. The character

  10. Large-signal dynamics of an ultrafast semiconductor laser at digital modulation rates approaching 10 Gbit/s

    SciTech Connect (OSTI)

    Lau, K.Y.; Yariv, A.

    1985-07-15T23:59:59.000Z

    High-fidelity pseudorandom digital modulation at 8.2 Gbit/s of an ultrahigh speed semiconductor laser is demonstrated. Studies using simple but representative pulse patterns at 10 Gbit/s give insights into the maximum digital modulation rate attainable from a given laser, as well as relations between large-signal digital performance and small-signal analog response.

  11. Dynamic response of Cu4Zr54 metallic glass to high strain rate shock loading: plasticity, spall and atomic-level structures

    SciTech Connect (OSTI)

    Luo, Shengnian [Los Alamos National Laboratory; Arman, Bedri [Los Alamos National Laboratory; Germann, Timothy C [Los Alamos National Laboratory; Cagin, Tahir [TEXAS A& M UNIV

    2009-01-01T23:59:59.000Z

    We investigate dynamic response of Cu{sub 46}Zr{sub 54} metallic glass under adiabatic planar shock wave loading (one-dimensional strain) wjth molecular dynamics simulations, including Hugoniot (shock) states, shock-induced plasticity and spallation. The Hugoniot states are obtained up to 60 CPa along with the von Mises shear flow strengths, and the dynamic spall strength, at different strain rates and temperatures. The spall strengths likely represent the limiting values achievable in experiments such as laser ablation. For the steady shock states, a clear elastic-plastic transition is identified (e.g., in the shock velocity-particle velocity curve), and the shear strength shows strain-softening. However, the elastic-plastic transition across the shock front displays transient stress overshoot (hardening) above the Hugoniot elastic limit followed by a relatively sluggish relaxation to the steady shock state, and the plastic shock front steepens with increasing shock strength. The local von Mises shear strain analysis is used to characterize local deformation, and the Voronoi tessellation analysis, the corresponding short-range structures at various stages of shock, release, tension and spallation. The plasticity in this glass is manifested as localized shear transformation zones and of local structure rather than thermal origin, and void nucleation occurs preferentially at the highly shear-deformed regions. The Voronoi and shear strain analyses show that the atoms with different local structures are of different shear resistances that lead to shear localization (e.g., the atoms indexed with (0,0,12,0) are most shear-resistant, and those with (0,2,8,1) are highly prone to shear flow). The dynamic changes in local structures are consistent with the observed deformation dynamics.

  12. Theoretical approach and impact of correlations on the critical packet generation rate in traffic dynamics on complex networks

    E-Print Network [OSTI]

    Fronczak, Piotr

    2015-01-01T23:59:59.000Z

    Using the formalism of the biased random walk in random uncorrelated networks with arbitrary degree distributions, we develop theoretical approach to the critical packet generation rate in traffic based on routing strategy with local information. We explain microscopic origins of the transition from the flow to the jammed phase and discuss how the node neighbourhood topology affects the transport capacity in uncorrelated and correlated networks.

  13. Rates & Repayment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Rates and...

  14. Dynamic

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111AWell: Gas productionDynamic , and Static ,

  15. Intrinsic AGN Absorption Lines

    E-Print Network [OSTI]

    Fred Hamann

    2000-06-12T23:59:59.000Z

    Strong absorption lines are common in rest-frame UV spectra of AGNs due to a variety of resonant transitions, for example the HI Lyman series lines (most notably Ly-alpha 1216) and high-ionization doublets like CIV 1549,1551. The lines are called ``intrinsic'' if the absorbing gas is physically related to the AGN, e.g. if the absorber resides broadly within the radius of the AGN's surrounding ``host'' galaxy. Intrinsic absorption lines are thus valuable probes of the kinematics, physical conditions and elemental abundances in the gas near AGNs. Studies of intrinsic absorbers have historically emphasized the broad absorption lines (BALs) in quasars. Today we recognize a wider variety of intrinsic lines in a wider range of objects. For example, we now know that Seyfert 1 galaxies (the less luminous cousins of quasars) have intrinsic absorption. We also realize that intrinsic lines can form in a range of AGN environments --- from the dynamic inner regions like the BALs, to the more quiescent outer host galaxies >10 kpc away. This article provides a brief introduction to current observational and theoretical work on intrinsic AGN absorbers.

  16. Cross delay line sensor characterization

    SciTech Connect (OSTI)

    Owens, Israel J [Los Alamos National Laboratory; Remelius, Dennis K [Los Alamos National Laboratory; Tiee, Joe J [Los Alamos National Laboratory; Buck, Steven E [Los Alamos National Laboratory; Whittemore, Stephen R [Los Alamos National Laboratory; Thompson, David C [Los Alamos National Laboratory; Shirey, Robert [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    There exists a wealth of information in the scientific literature on the physical properties and device characterization procedures for complementary metal oxide semiconductor (CMOS), charge coupled device (CCD) and avalanche photodiode (APD) format detectors. Numerous papers and books have also treated photocathode operation in the context of photomultiplier tube (PMT) operation for either non imaging applications or limited night vision capability. However, much less information has been reported in the literature about the characterization procedures and properties of photocathode detectors with novel cross delay line (XDL) anode structures. These allow one to detect single photons and create images by recording space and time coordinate (X, Y & T) information. In this paper, we report on the physical characteristics and performance of a cross delay line anode sensor with an enhanced near infrared wavelength response photocathode and high dynamic range micro channel plate (MCP) gain (> 10{sup 6}) multiplier stage. Measurement procedures and results including the device dark event rate (DER), pulse height distribution, quantum and electronic device efficiency (QE & DQE) and spatial resolution per effective pixel region in a 25 mm sensor array are presented. The overall knowledge and information obtained from XDL sensor characterization allow us to optimize device performance and assess capability. These device performance properties and capabilities make XDL detectors ideal for remote sensing field applications that require single photon detection, imaging, sub nano-second timing response, high spatial resolution (10's of microns) and large effective image format.

  17. Rate Schedules

    Broader source: Energy.gov [DOE]

    One of the major responsibilities of Southeastern is to design, formulate, and justify rate schedules. Repayment studies prepared by the agency determine revenue requirements and appropriate rate...

  18. Quantum Rate Coefficients and Kinetic Isotope Effect for the Reaction Cl + CH[subscript 4] ? HCl + CH[subscript 3] from Ring Polymer Molecular Dynamics

    E-Print Network [OSTI]

    Li, Yongle

    Thermal rate coefficients and kinetic isotope effect have been calculated for prototypical heavy–light–heavy polyatomic bimolecular reactions Cl + CH[subscript 4]/CD[subscript 4] ? HCl/DCl + CH[subscript 3]/CD[subscript ...

  19. Integrated System Transmission and Ancillary Services Rate Calculation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    16 General & Intangible (line 4 - line 10) 0 0 17 Common (line 5 - line 11) 0 0 18 TOTAL NET PLANT (sum lines 13-17) 1,138,837,982 NP 57.623% 656,232,236 ADJUSTMENTS TO RATE BASE...

  20. Integrated System Transmission and Ancillary Services Rate Calculation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    16 General & Intangible (line 4 - line 10) 0 0 17 Common (line 5 - line 11) 0 0 18 TOTAL NET PLANT (sum lines 13-17) 1,173,043,233 NP 55.592% 652,122,156 ADJUSTMENTS TO RATE BASE...

  1. An investigation of the dynamic shearing resistance of a low compressibility kaolin clay as a function of rate of shear deformation

    E-Print Network [OSTI]

    Durgunoglu, Asim Tufan

    1969-01-01T23:59:59.000Z

    Murff for his help and support with computer programs, and to Mrs. Julie Barnes for typing the manuscript. The author also wishes to thank Sandia Laboratories and ihe Texas Engineerirg Experiment Station which supported this research project. Vl... at the Terramechanics Laboratory of Texas ARM University. The work was sponsored by both Sandia Labora- tories, Albuquerque, New Mexico, and the Texas Engineering Experi- ment Station, Coilege Station, Texas. The dynamic strength of soils is important in all...

  2. Phase transitions in a reaction-diffusion model on a line with boundaries

    SciTech Connect (OSTI)

    Khorrami, Mohammad, E-mail: mamwad@mailaps.org; Aghamohammadi, Amir, E-mail: mohamadi@alzahra.ac.ir [Department of Physics, Alzahra University, Tehran 19938-93973 (Iran, Islamic Republic of)] [Department of Physics, Alzahra University, Tehran 19938-93973 (Iran, Islamic Republic of)

    2014-03-15T23:59:59.000Z

    A one-dimensional model on a line of length L is investigated, which involves particle diffusion as well as single particle annihilation. There are also creation and annihilation at the boundaries. The static and dynamical behaviors of the system are studied. It is seen that the system could exhibit a dynamical phase transition. For small drift velocities, the relaxation time does not depend on the absorption rates at the boundaries. This is the fast phase. For large velocities, the smaller of the absorption rates at boundaries enter the relaxation rate and makes it longer. This is the slow phase. Finally, the effect of a random particle creation in the bulk is also investigated.

  3. Stable dynamics in a Greenland tidewater glacier over 26 years despite reported thinning

    E-Print Network [OSTI]

    Huybrechts, Philippe

    , there is potential for the grounding line to retreat, for calving rates to increase and for the glacier to accelerateStable dynamics in a Greenland tidewater glacier over 26 years despite reported thinning Suzanne L glacier terminating in the northwest corner of the Scoresby Sund fjords. We present a time series

  4. The effect of fuel composition on flame dynamics

    SciTech Connect (OSTI)

    Hendricks, Adam G.; Vandsburger, Uri [Department of Mechanical Engineering - 0238, Virginia Tech, Blacksburg, VA 24061 (United States)

    2007-10-15T23:59:59.000Z

    As fuel sources diversify, the gas turbine industry is under increasing pressure to develop fuel-flexible plants, able to use fuels with a variety of compositions from a large range of sources. However, the dynamic characteristics vary considerably with composition, in many cases altering the thermoacoustic stability of the combustor. We compare the flame dynamics, or the response in heat release rate of the flame to acoustic perturbations, of the three major constituents of natural gas: methane, ethane, and propane. The heat release rate is quantified using OH* chemiluminescence and product gas temperature. Gas temperature is measured by tracking the absorption of two high-temperature water lines, via Tunable Diode Laser Absorption Spectroscopy. The flame dynamics of the three fuels differ significantly. The changes in flame dynamics due to variations in fuel composition have the potential to have a large effect on the thermoacoustic stability of the combustor. (author)

  5. Efficient buffer design algorithms for production line profit maximization

    E-Print Network [OSTI]

    Shi, Chuan, Ph. D. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    A production line is a manufacturing system where machines are connected in series and separated by buffers. The inclusion of buffers increases the average production rate of the line by limiting the propagation of ...

  6. Proceedings of the 1992 EPRI heat rate improvement conference

    SciTech Connect (OSTI)

    Henry, R.E. (Sargent and Lundy, Chicago, IL (United States))

    1993-03-01T23:59:59.000Z

    Diverse but compelling forces such as increasing fuel prices, greater power demands, growing competition, and ever more aggressive regulatory incentives are causing utilities to place additional focus on power plant heat rate. The 1992 heat rate improvement conference was a gathering of utility industry experts to share knowledge and concerns on such key issues as on-line measurement of stack gas mass flow rate-increasingly important because of the regulations of the Clean Air Act of 1990. These proceedings present the latest developments by EPRI and the utility industry to improve heat rate. Representatives of utilities, architect/engineering firms, research firms, and manufacturers presented 71 papers, and a panel discussion by the ASME performance test code committee on PTC 46 provided a forum on the overall plant performance test code. These proceedings report on a number of heat rate improvement programs, both in development and in place, including EPRI's Plant Monitoring Workstation (PMW), the State-of-the-Art Power Plant (SOAPP) conceptual design tool, and several developments in boiler performance monitoring, including an on-line system at PEPCO's Morgantown unit 2. Other conference papers describe advances in heat rate improvement through (1) computer software tools modeling boiler cleanliness, heat balance, duct system dynamics, heat rate root cause diagnosis, and conceptual plant design; (2) new instruments and testing systems in the areas of performance testing, heat rate monitoring, circulating water flow measurement, and low-pressure turbine efficiency measurement; and (3) auxiliary equipment improvements such as condensing heat exchangers, macrobiofouling control, condenser in-leakage and air binding control, air heater monitoring, and feedwater heater level control. Individual papers are indexed separately.

  7. Strain rate sensitive constitutive equations

    E-Print Network [OSTI]

    Nelson, Charles Edward

    1971-01-01T23:59:59.000Z

    1 Computed Constants For Far'ous . Baterials 47 LIST OF FIGURFS Pace Figure I Comparison of Rate Data For Commercially Pure Aluminum Figure 2 Dynamic Loading Regimes 17 Figure 3 Yield Criteria 32 Figure 4 Uni-axial Stress-Strain Rate...

  8. Nanoindentation Under Dynamic Conditions

    E-Print Network [OSTI]

    Wheeler, Jeffrey M

    2009-05-22T23:59:59.000Z

    ............................................................................................ 98  6.3.1  Data Analysis ........................................................................................... 99  6.3.2  Dynamic Compliance ............................................................................. 103  6.3.3  Strain Rates...

  9. Rates and Repayment Services

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Tariff Rates FY 2015 Rates and Rate Schedules **Effective October 1, 2014** FY 2014 Rates and Rate Schedules FY 2013 Rates and Rate Schedules FY 2012 Rates and Rate Schedules FY...

  10. Transcontinental Rates

    E-Print Network [OSTI]

    Danskin, Floyd Brown

    1913-01-01T23:59:59.000Z

    the Pacif ic Mail was left to continue its subsidized co - etition for through traffic. 3 It was in the year 1883 also that the North rn Pao! fio was opened for traffic to the Pacifio Northwest,and in the following year by the comp~tion of the Oregon B... 184. The N. P. owns and operates a line of railway from Ash­ land, Wis. to Portland, Oregon and Wallula, Wash. a distanc e of 2 , 137 miles. Its principal eastern termini are st. Pau1, Minneapolis and Duluth in Minnesota, and its 'rincipal wes~ ern...

  11. Rates and Repayment Services

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Customer Letter - Preliminary Review of Drought Adder Component for 2011 Firm Power Rates 2015 Rates and Rate Schedule - Current * 2010 Rates and Rate Schedule 2009 Rates and...

  12. Rates and Repayment Services

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Rates and Repayment Services Consolidated Rate Schedules FY 2015 Consolidated Rate Schedules FY 2014 Rates BCP Annual Rate Process Central Arizona Project Transmission Rate Process...

  13. Plains and Eastern Clean Line Transmission Line: Comment from...

    Office of Environmental Management (EM)

    from Block Plains and Eastern Clean Line: Arkansas and Oklahoma Plains and Eastern Clean Line Transmission Line: Comment from Block Plains and Eastern Clean Line: Arkansas and...

  14. Coiled transmission line pulse generators

    DOE Patents [OSTI]

    McDonald, Kenneth Fox (Columbia, MO)

    2010-11-09T23:59:59.000Z

    Methods and apparatus are provided for fabricating and constructing solid dielectric "Coiled Transmission Line" pulse generators in radial or axial coiled geometries. The pour and cure fabrication process enables a wide variety of geometries and form factors. The volume between the conductors is filled with liquid blends of monomers, polymers, oligomers, and/or cross-linkers and dielectric powders; and then cured to form high field strength and high dielectric constant solid dielectric transmission lines that intrinsically produce ideal rectangular high voltage pulses when charged and switched into matched impedance loads. Voltage levels may be increased by Marx and/or Blumlein principles incorporating spark gap or, preferentially, solid state switches (such as optically triggered thyristors) which produce reliable, high repetition rate operation. Moreover, these Marxed pulse generators can be DC charged and do not require additional pulse forming circuitry, pulse forming lines, transformers, or an a high voltage spark gap output switch. The apparatus accommodates a wide range of voltages, impedances, pulse durations, pulse repetition rates, and duty cycles. The resulting mobile or flight platform friendly cylindrical geometric configuration is much more compact, light-weight, and robust than conventional linear geometries, or pulse generators constructed from conventional components. Installing additional circuitry may accommodate optional pulse shape improvements. The Coiled Transmission Lines can also be connected in parallel to decrease the impedance, or in series to increase the pulse length.

  15. Rates and Repayment Services

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Rates and Repayment Services Rates Loveland Area Projects Firm Power Rates Open Access Transmission Tariff Rates Chart of Loveland Area Projects Historical Transmission Rates...

  16. Dynamic behavior of an AFBC test rig: An experimental study

    SciTech Connect (OSTI)

    Deoirmenci, E.; Selcuk, N.

    1999-07-01T23:59:59.000Z

    Dynamic behavior of a bubbling 0.3 MWt AFBC test rig fired with a low-quality lignite with aVCM/FC ratio of 7.6 and high ash content (50% on dry basis) was investigated. Transient responses to a step change in fuel feed rate and to a step change inbed cooling-water flow rate were examined, respectively. The corresponding changes in the oxygen and carbon monoxide concentrations at the exit of the freeboard and in the temperatures of bed and freeboard were measured against time. A step increase in the fuel feed rate resulted in a decrease and an increase in oxygen and carbon monoxide concentrations, respectively. Oxygen concentration show a sudden response while carbon monoxide concentration follows the change in fuel feed rate after an initial lag. The response of bed and freeboard temperatures to the change in fuel feed rate was similar to that of oxygen concentration. A step increase in bed heat withdrawal rate decreases the rate of increase of gas temperatures which, in turn, slows down the combustion rate which is confirmed by the decrease in carbon monoxide and an increase in oxygen concentrations, respectively. Rate of change of gas temperatures is lower than those of gas concentrations for step changes in both fuel feed rate and bed cooling-water flow rate for the refractory-lined combustor under consideration.

  17. H-beta Line Width and the UV-X-ray Spectra of Luminous AGN

    E-Print Network [OSTI]

    B. J. Wills; Z. Shang; J. M. Yuan

    2000-05-08T23:59:59.000Z

    The width of the broad H-beta emission line is the primary defining characteristic of the NLS1 class. This parameter is also an important component of Boroson and Green's optical Eigenvector 1 (EV1), which links steeper soft X-ray spectra with narrower H-beta emission, stronger H-beta blue wing, stronger optical Fe II emission, and weaker [O III] lambda 5007. Potentially, EV1 represents a fundamental physical process linking the dynamics of fueling and outflow with the accretion rate. We attempted to understand these relationships by extending the optical spectra into the UV for a sample of 22 QSOs with high quality soft-X-ray spectra, and discovered a whole new set of UV relationships that suggest that high accretion rates are linked to dense gas and perhaps nuclear starbursts. While it has been argued that narrow (BLR) H-beta means low Black Hole mass in luminous NLS1s, the C IV, lambda 1549 and Ly alpha emission lines are broader, perhaps the result of outflows driven by their high Eddington accretion rates. We present some new trends of optical-UV with X-ray spectral energy distributions. Steeper X-ray spectra appear associated with stronger UV relative to optical continua, but the presence of strong UV absorption lines is associated with depressed soft X-rays and redder optical-UV continua.

  18. On line chemical composition of analyzer development

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    This status report details progress made on the development of an on-line chemical analyzer. Dynamic studies of the distillation column, approval of testing plans, installation of a sample cell and raman analyzer, design of computerized control systems are described. Information on seminars and published papers is also included. (GHH)

  19. The ice flow behavior in the neighborhood of the grounding line. Non-Newtonian case.

    E-Print Network [OSTI]

    Fontelos, Marco

    The ice flow behavior in the neighborhood of the grounding line. Non-Newtonian case. Marco A line dynamics. The grounding line is the line where tran- sition between ice attached to the solid ground and ice floating over the sea takes place. We analyze a mathematical model describing the ice flow

  20. Instability statistics and mixing rates

    E-Print Network [OSTI]

    Roberto Artuso; Cesar Manchein

    2009-10-20T23:59:59.000Z

    We claim that looking at probability distributions of \\emph{finite time} largest Lyapunov exponents, and more precisely studying their large deviation properties, yields an extremely powerful technique to get quantitative estimates of polynomial decay rates of time correlations and Poincar\\'e recurrences in the -quite delicate- case of dynamical systems with weak chaotic properties.

  1. Load-resistant coaxial transmission line

    DOE Patents [OSTI]

    Hall, David R.; Fox, Joe

    2006-01-03T23:59:59.000Z

    A transmission line for downhole tools that make up all or part of a tool string for drilling and production of oil, gas, and geothermal wells that can withstand the dynamic gravitational forces and other accelerations associated with downhole excavations. The transmission line has a metal tube, or outer conductor, that houses a coaxial wire inner conductor. A non-metallic dielectric material is interposed between the inner and outer conductors. The outer and inner conductors and the dielectric are sufficiently compressed together so that independent motion between them is abated. Compression of the components of the transmission line may be achieved by drawing the transmission through one or more dies in order to draw down the outer conductor onto the dielectric, or by expanding the inner conductor against the dielectric using a mandrel or hydraulic pressure. Non-metallic bead segments may be used in aid of the compression necessary to resist the dynamic forces and accelerations of drilling.

  2. Line formation in AGB atmospheres including velocity effects. Molecular line profile variations of long period variables

    E-Print Network [OSTI]

    Nowotny, W; Aringer, B

    2010-01-01T23:59:59.000Z

    The atmospheres of evolved red giants are considerably influenced by pulsations of the stellar interiors and developing stellar winds. The resulting complex velocity fields severely affect molecular line profiles observable in NIR spectra. With the help of model calculations the complex line formation process in AGB atmospheres was explored with the focus on velocity effects. Furthermore, we aimed for atmospheric models which are able to quantitatively reproduce line profile variations found in observed spectra of pulsating late-type giants. Models describing pulsation-enhanced dust-driven winds were used to compute synthetic spectra under the assumptions of chemical equilibrium and LTE and by solving the radiative transfer in spherical geometry including velocity effects. Radial velocities derived from Doppler-shifted synthetic line profiles provide information on the gas velocities in the line-forming region of the spectral features. On the basis of dynamic models we investigated in detail the finding that ...

  3. Series Transmission Line Transformer

    DOE Patents [OSTI]

    Buckles, Robert A. (Livermore, CA); Booth, Rex (Livermore, CA); Yen, Boris T. (El Cerrito, CA)

    2004-06-29T23:59:59.000Z

    A series transmission line transformer is set forth which includes two or more of impedance matched sets of at least two transmissions lines such as shielded cables, connected in parallel at one end ans series at the other in a cascading fashion. The cables are wound about a magnetic core. The series transmission line transformer (STLT) which can provide for higher impedance ratios and bandwidths, which is scalable, and which is of simpler design and construction.

  4. Electric Transmission Lines (Nebraska)

    Broader source: Energy.gov [DOE]

    The Public Service Commission has jurisdiction over all electricity transmission lines crossing over or under railroad tracks at public highway crossings. This section contains general regulations...

  5. Dynamic screening x-ray energy shifts and collisional line broadening of 2p-1s transitions in 2 MeV/AMU H- and He-like Ne, Mg, and S ions traveling in solids

    E-Print Network [OSTI]

    Maurer, Richard Jay

    1983-01-01T23:59:59.000Z

    for reflectivity) of the np-1s and 1snp-ls peaks vs quantum number for n 2 to 6. . . . ~ . . . . . 130 CHAPTER I INTRODUCTION The earliest report of Ku x-rays from few-electron heavy iona was found in the pioneering work of Edlen and Tyzen ~ Using a vacuum.... Hopkins et al. 2 also observed line broadening when they measured x-rays emitted from 4 ' 0 NeV Ne moving in solid targets. The line broadening is thought to arise because of the large cross-sections for ionization, excitation, and decay processes...

  6. The power of dynamic pricing

    SciTech Connect (OSTI)

    Faruqui, Ahmad; Hledik, Ryan; Tsoukalis, John

    2009-04-15T23:59:59.000Z

    Using data from a generic California utility, it can be shown that it is feasible to develop dynamic pricing rates for all customer classes. These rates have the potential to reduce system peak demands from 1 to 9 percent. (author)

  7. Transmission Line Security Monitor

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

  8. Transmission Line Security Monitor

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

  9. Scalability of dynamic traffic assignment

    E-Print Network [OSTI]

    Wen, Yang, Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    This research develops a systematic approach to analyze the computational performance of Dynamic Traffic Assignment (DTA) models and provides solution techniques to improve their scalability for on-line applications for ...

  10. Concurrent Wind Cooling in Power Transmission Lines

    SciTech Connect (OSTI)

    Jake P Gentle

    2012-08-01T23:59:59.000Z

    Idaho National Laboratory and the Idaho Power Company, with collaboration from Idaho State University, have been working on a project to monitor wind and other environmental data parameters along certain electrical transmission corridors. The combination of both real-time historical weather and environmental data is being used to model, validate, and recommend possibilities for dynamic operations of the transmission lines for power and energy carrying capacity. The planned results can also be used to influence decisions about proposed design criteria for or upgrades to certain sections of the transmission lines.

  11. Visual exploration of 2D autonomous dynamical systems

    E-Print Network [OSTI]

    Müller, Thomas

    2015-01-01T23:59:59.000Z

    In an introductory course on dynamical systems or Hamiltonian mechanics, vector field diagrams are a central tool to show a system's qualitative behaviour in a certain domain. Because of their low sampling rates and the involved issues of vector normalization, these plots give only a coarse insight and are unable to convey the vector field behaviour at locations with high variation, in particular in the neighborhood of critical points. Similarly, automatic generation of phase portraits based on traditional sampling cannot precisely capture separatrices or limit cylces. In this paper, we present ASysViewer, an application for the interactive visual exploration of two-dimensional autonomous dynamical systems using line integral convolution techniques for visualization, and grid-based techniques to extract critical points and separatrices. ASysViewer is addressed to undergraduate students during their first course in dynamical systems or Hamiltonian mechanics.

  12. Dynamic Power Flow Controller: Compact Dynamic Phase Angle Regulators for Transmission Power Routing

    SciTech Connect (OSTI)

    None

    2012-01-03T23:59:59.000Z

    GENI Project: Varentec is developing compact, low-cost transmission power controllers with fractional power rating for controlling power flow on transmission networks. The technology will enhance grid operations through improved use of current assets and by dramatically reducing the number of transmission lines that have to be built to meet increasing contributions of renewable energy sources like wind and solar. The proposed transmission controllers would allow for the dynamic control of voltage and power flow, improving the grid’s ability to dispatch power in real time to the places where it is most needed. The controllers would work as fail-safe devices whereby the grid would be restored to its present operating state in the event of a controller malfunction instead of failing outright. The ability to affordably and dynamically control power flow with adequate fail-safe switchgear could open up new competitive energy markets which are not possible under the current regulatory structure and technology base.

  13. Coherent soliton communication lines

    SciTech Connect (OSTI)

    Yushko, O. V., E-mail: olesya.yushko@gmail.com; Redyuk, A. A.; Fedoruk, M. P.; Turitsyn, S. K. [Novosibirsk State University (Russian Federation)

    2014-11-15T23:59:59.000Z

    The data transmission in coherent fiber-optical communication lines using solitons with a variable phase is studied. It is shown that nonlinear coherent structures (solitons) can be applied for effective signal transmission over a long distance using amplitude and optical-phase keying of information. The optimum ratio of the pulse width to the bit slot at which the spectral efficiency (transmitted bits per second and hertz) is maximal is determined. It is shown that soliton fiber-optical communication lines can ensure data transmission at a higher spectral efficiency as compared to traditional communication lines and at a high signal-to-noise ratio.

  14. Holes in Spectral Lines

    E-Print Network [OSTI]

    Fontana, Peter R.; Srivastava, Rajendra P.

    1973-06-01T23:59:59.000Z

    The decay of an atom in the presence of a static perturbation is investigated. The perturbation couples a decaying state with a nondecaying state. A "hole" appears in the emission line at a frequency equal to the frequency difference between...

  15. Line Extension Alternatives

    Broader source: Energy.gov [DOE]

    The Public Service Board (PSB) of Vermont developed rules regarding utility line extension requests. While the majority of the rules focus on the procedure followed (and associated fees) for the...

  16. Electric Transmission Lines (Iowa)

    Broader source: Energy.gov [DOE]

    Electric transmission lines capable of operating at 69 kV or greater cannot be constructed along, across, or over any public highways or grounds outside of cities without a franchise from the...

  17. Power line detection system

    DOE Patents [OSTI]

    Latorre, V.R.; Watwood, D.B.

    1994-09-27T23:59:59.000Z

    A short-range, radio frequency (RF) transmitting-receiving system that provides both visual and audio warnings to the pilot of a helicopter or light aircraft of an up-coming power transmission line complex. Small, milliwatt-level narrowband transmitters, powered by the transmission line itself, are installed on top of selected transmission line support towers or within existing warning balls, and provide a continuous RF signal to approaching aircraft. The on-board receiver can be either a separate unit or a portion of the existing avionics, and can also share an existing antenna with another airborne system. Upon receipt of a warning signal, the receiver will trigger a visual and an audio alarm to alert the pilot to the potential power line hazard. 4 figs.

  18. Power line detection system

    DOE Patents [OSTI]

    Latorre, Victor R. (Tracy, CA); Watwood, Donald B. (Tracy, CA)

    1994-01-01T23:59:59.000Z

    A short-range, radio frequency (RF) transmitting-receiving system that provides both visual and audio warnings to the pilot of a helicopter or light aircraft of an up-coming power transmission line complex. Small, milliwatt-level narrowband transmitters, powered by the transmission line itself, are installed on top of selected transmission line support towers or within existing warning balls, and provide a continuous RF signal to approaching aircraft. The on-board receiver can be either a separate unit or a portion of the existing avionics, and can also share an existing antenna with another airborne system. Upon receipt of a warning signal, the receiver will trigger a visual and an audio alarm to alert the pilot to the potential power line hazard.

  19. Chlorite Dissolution Rates

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Carroll, Susan

    Spreadsheets provides measured chlorite rate data from 100 to 300C at elevated CO2. Spreadsheet includes derived rate equation.

  20. Chlorite Dissolution Rates

    SciTech Connect (OSTI)

    Carroll, Susan

    2013-07-01T23:59:59.000Z

    Spreadsheets provides measured chlorite rate data from 100 to 300C at elevated CO2. Spreadsheet includes derived rate equation.

  1. The Interest Rate Conundrum

    E-Print Network [OSTI]

    Craine, Roger; Martin, Vance L.

    2009-01-01T23:59:59.000Z

    Flows and US Interest Rates,” NBER Working Paper No 12560. [Working Paper # 2008 -03 The Interest Rate Conundrum Roger

  2. Speed-line for 3D animation

    E-Print Network [OSTI]

    Song, Won Chan

    2007-04-25T23:59:59.000Z

    point moved to a CV on the circle . . . . . . . . . . . . . . 38 39 Ending point placed between the starting point and the goal object . 38 40 Speed-lines with another cartoon effect . . . . . . . . . . . . . . . . . 41 ix FIGURE Page 41 Image sequences... from the result animation . . . . . . . . . . . . . . . 42 1 CHAPTER I INTRODUCTION One of the earliest artists who tried to convey dynamic movement in a static image is Hokusai Katsushika, who is one of the best known Ukiyo-e1 artists. He is called...

  3. Multistability in nonlinear left-handed transmission lines David A. Powell,a

    E-Print Network [OSTI]

    Multistability in nonlinear left-handed transmission lines David A. Powell,a Ilya V. Shadrivov; published online 2 July 2008 Employing a nonlinear left-handed transmission line as a model system, we, which at higher power may result in chaotic dynamics of the transmission line. © 2008 American Institute

  4. BEAM DYMANICS SIMULATIONS REGARDING THE EXPERIMENTAL FFAG EMMA, USING THE ON-LINE CODE

    E-Print Network [OSTI]

    Giboudot, Y; Méot, F; Yokoi, T

    2010-01-01T23:59:59.000Z

    The Electron Model for Many Applications FFAG (EMMA) has been the object of extensive beam dynamics simulations during its design and construction phases, using the ray-tracing code Zgoubi, which has been retained as the on-line simulation engine. On the other hand EMMA commissioning requires further advanced beam dynamics studies as well as on-line and off-line simulations. This contribution reports on some aspects of the studies so performed during the last months using Zgoubi.

  5. Theoretical X-ray Line Profiles from Colliding Wind Binaries

    E-Print Network [OSTI]

    Henley, D B; Pittard, J M

    2003-01-01T23:59:59.000Z

    We present theoretical X-ray line profiles from a range of model colliding wind systems. In particular, we investigate the effects of varying the stellar mass-loss rates, the wind speeds, and the viewing orientation. We find that a wide range of theoretical line profile shapes is possible, varying with orbital inclination and phase. At or near conjunction, the lines have approximately Gaussian profiles, with small widths (HWHM ~ 0.1 v_infty) and definite blue- or redshifts (depending on whether the star with the weaker wind is in front or behind). When the system is viewed at quadrature, the lines are generally much broader (HWHM ~ v_infty), flat-topped and unshifted. Local absorption can have a major effect on the observed profiles - in systems with mass-loss rates of a few times 10^{-6} Msol/yr the lower energy lines (E wind of the primary. The orbital variation ...

  6. BCP Annual Rate Process

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2015 BCP Annual Rate Process (FY 2016 Base Charge & Rate) Informal Process Rate Activity Schedule (doc) Informal Customer Meeting Thursday March 11, 2015 at 10:30 A.M. Conf Rms 3&4...

  7. Design of the ILC RTML Extraction Lines

    SciTech Connect (OSTI)

    Seletskiy, S.; Tenenbaum, P.; Walz, D.; /SLAC; Solyak, N.; /Fermilab

    2011-10-17T23:59:59.000Z

    The ILC [1] Damping Ring to the Main Linac beamline (RTML) contains three extraction lines (EL). Each EL can be used both for an emergency abort dumping of the beam and tune-up continual train-by-train extraction. Two of the extraction lines are located downstream of the first and second stages of the RTML bunch compressor, and must accept both compressed and uncompressed beam with energy spreads of 2.5% and 0.15%, respectively. In this paper we report on an optics design that allowed minimizing the length of the extraction lines while offsetting the beam dumps from the main line by the distance required for acceptable radiation levels in the service tunnel. The proposed extraction lines can accommodate beams with different energy spreads while at the same time providing the beam size acceptable for the aluminum dump window. The RTML incorporates three extraction lines, which can be used for either an emergency beam abort or for a train-by-train extraction. The first EL is located downstream of the Damping Ring extraction arc. The other two extraction lines are located downstream of each stage of the two-stage bunch compressor. The first extraction line (EL1) receives 5GeV beam with an 0.15% energy spread. The extraction line located downstream of the first stage of bunch compressor (ELBC1) receives both compressed and uncompressed beam, and therefore must accept beam with both 5 and 4.88GeV energy, and 0.15% and 2.5% energy spread, respectively. The extraction line located after the second stage of the bunch compressor (ELBC2) receives 15GeV beam with either 0.15 or 1.8% energy spread. Each of the three extraction lines is equipped with the 220kW aluminum ball dump, which corresponds to the power of the continuously dumped beam with 5GeV energy, i.e., the beam trains must be delivered to the ELBC2 dump at reduced repetition rate.

  8. Ultrafast Strong-Field Vibrational Dynamics Studied by Femtosecond Extreme-Ultraviolet Transient Absorption Spectroscopy

    E-Print Network [OSTI]

    Hosler, Erik Robert

    2013-01-01T23:59:59.000Z

    dynamics. Tunnel ionization rate determinations are employed to model the pump, while electronic structure calculations

  9. Research Rate Liaison Rate for outside academic &

    E-Print Network [OSTI]

    Gilchrist, James F.

    as of 12/9/13 External Rate Spark Plasma Sintering ) Spark Plasma Sintering > 24 hrs 2 8 Vacuum Hot Press

  10. Omega Transmission Lines

    E-Print Network [OSTI]

    Vehmas, Joni

    2013-01-01T23:59:59.000Z

    In this paper, we show how bi-anisotropic media with omega-type response can be realized using periodically loaded transmission lines. General conditions for the needed unit cell circuit block are derived. Also, an implementation is shown and analyzed.

  11. Command Line Tools Cloud Computing

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    Command Line Tools Cloud Computing #12;Everybody (or nearly everybody) loves GUI. AWS Command Line of advanced features. After surviving the cloud computing class till now, Your are almost a command line guru! You need AWS command line tools, ec2-api-tools, to maximize the power of AWS cloud computing. Plugging

  12. 2012 Transmission Rate Schedules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2014 Transmission, Ancillary, and Control Area Service Rate Schedules and General Rate Schedule Provisions (FY 2014-2015) October 2013 United States Department of Energy...

  13. Effective Rate Period

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    10012014 - 03312015 Mid-Year Change (if applicable) 10012014 - 09302015 Power Rates Annual Revenue Requirement Rate Schedule Power Revenue Requirement 70,091,227 CV-F13...

  14. Effective Rate Period

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of the FY Mid-Year Change 10012013 - 03312014 04012014 - 09302014 Power Rates Annual Revenue Requirement Rate Schedule Power Revenue Requirement 73,441,557...

  15. 2004 Rate Adjustments

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Transmission and Ancillary Services Federal Register Notice -- Rate Order WAPA-141: Notice of Extension of Formula Rates for Transmission and Ancillary Services If you have any...

  16. WAPA-169 Rate Order

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    69 Rate Order Western is proposing adjustments to the Salt Lake City Area Integrated Projects firm power rate and the Colorado River Storage Project Transmission and ancillary...

  17. Multiple System Rate Process

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DSW Multiple System Transmission Rate Process Federal Register Notice Withdrawing Rate Proposal (PDF) Formal Process Extension Federal Register Notice (PDF) Customer Savisngs Under...

  18. SPATIALLY RESOLVED HST GRISM SPECTROSCOPY OF A LENSED EMISSION LINE GALAXY AT z {approx} 1

    SciTech Connect (OSTI)

    Frye, Brenda L. [Steward Observatory, Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Hurley, Mairead [School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9 (Ireland); Bowen, David V. [Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08540 (United States); Meurer, Gerhardt [International Centre for Radio Astronomy Research, The University of Western Australia M468, 35 Stirling Highway, Crawley, WA 6009 (Australia); Sharon, Keren [Department of Astronomy and Astrophysics, The University of Chicago, Chicago, IL 60637 (United States); Straughn, Amber [Astrophysics Science Division, Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States); Coe, Dan [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Broadhurst, Tom [Ikerbasque, Basque Foundation for Science, E-48011 Bilbao (Spain); Guhathakurta, Puragra, E-mail: bfrye@as.arizona.edu [UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States)

    2012-07-20T23:59:59.000Z

    We take advantage of gravitational lensing amplification by A1689 (z 0.187) to undertake the first space-based census of emission line galaxies (ELGs) in the field of a massive lensing cluster. Forty-three ELGs are identified to a flux of i{sub 775} = 27.3 via slitless grism spectroscopy. One ELG (at z = 0.7895) is very bright owing to lensing magnification by a factor of Almost-Equal-To 4.5. Several Balmer emission lines (ELs) detected from ground-based follow-up spectroscopy signal the onset of a major starburst for this low-mass galaxy (M{sub *} Almost-Equal-To 2 Multiplication-Sign 10{sup 9} M{sub Sun }) with a high specific star formation rate ( Almost-Equal-To 20 Gyr{sup -1}). From the blue ELs we measure a gas-phase oxygen abundance consistent with solar (12+log(O/H) = 8.8 {+-} 0.2). We break the continuous line-emitting region of this giant arc into seven {approx}1 kpc bins (intrinsic size) and measure a variety of metallicity-dependent line ratios. A weak trend of increasing metal fraction is seen toward the dynamical center of the galaxy. Interestingly, the metal line ratios in a region offset from the center by {approx}1 kpc have a placement on the blue H II region excitation diagram with f ([O III])/f (H{beta}) and f ([Ne III])/f (H{beta}) that can be fitted by an active galactic nucleus (AGN). This asymmetrical AGN-like behavior is interpreted as a product of shocks in the direction of the galaxy's extended tail, possibly instigated by a recent galaxy interaction.

  19. Printed circuit dispersive transmission line

    DOE Patents [OSTI]

    Ikezi, H.; Lin-Liu, Y.R.; DeGrassie, J.S.

    1991-08-27T23:59:59.000Z

    A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission line between two adjacent periodic intersections to be longer than the other. 5 figures.

  20. Formation depths of Fraunhofer lines

    E-Print Network [OSTI]

    Gurtovenko, E A

    2015-01-01T23:59:59.000Z

    We have summed up our investigations performed in 1970--1993. The main task of this paper is clearly to show processes of formation of spectral lines as well as their distinction by validity and by location. For 503 photospheric lines of various chemical elements in the wavelength range 300--1000 nm we list in Table the average formation depths of the line depression and the line emission for the line centre and on the half-width of the line, the average formation depths of the continuum emission as well as the effective widths of the layer of the line depression formation. Dependence of average depths of line depression formation on excitation potential, equivalent widths, and central line depth are demonstrated by iron lines.

  1. W Hya through the eye of Odin Satellite observations of circumstellar submillimetre H$_2$O line emission

    E-Print Network [OSTI]

    K. Justtanont; P. Bergman; B. Larsson; H. Olofsson; F. L. Schoier; U. Frisk; T. Hasegawa; A. Hjalmarson; S. Kwok; M. Olberg; Aa. Sandqvist; K. Volk; M. Elitzur

    2005-05-11T23:59:59.000Z

    We present Odin observations of the AGB star W Hya in the ground-state transition of ortho-H2O, 1(10)-1(01), at 557GHz. The line is clearly of circumstellar origin. Radiative transfer modelling of the water lines observed by Odin and ISO results in a mass-loss rate of (2.5 +/- 0.5)E-7 Msol/yr, and a circumstellar H2O abundance of (2.0 +/- 1.0)E-3. The inferred mass-loss rate is consistent with that obtained from modelling the circumstellar CO radio line emission, and also with that obtained from the dust emission modelling combined with a dynamical model for the outflow. The very high water abundance, higher than the cosmic oxygen abundance, can be explained by invoking an injection of excess water from evaporating icy bodies in the system. The required extra mass of water is quite small, on the order of ~ 0.1 earth mass.

  2. Drill string transmission line

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Bradford, Kline (Orem, UT); Fox, Joe (Spanish Fork, UT)

    2006-03-28T23:59:59.000Z

    A transmission line assembly for transmitting information along a downhole tool comprising a pin end, a box end, and a central bore traveling between the pin end and the box end, is disclosed in one embodiment of the invention as including a protective conduit. A transmission line is routed through the protective conduit. The protective conduit is routed through the central bore and the ends of the protective conduit are routed through channels formed in the pin end and box end of the downhole tool. The protective conduit is elastically forced into a spiral or other non-linear path along the interior surface of the central bore by compressing the protective conduit to a length within the downhole tool shorter than the protective conduit.

  3. Transmission line: design manual

    SciTech Connect (OSTI)

    Farr, H.H.

    1980-01-01T23:59:59.000Z

    The purpose of this manual is to outline the various requirements for, and the procedures to be followed in the design of power transmission lines by the Bureau of Reclamation, US Department of the Interior. Numerous design studies, which have been made on specific aspects of transmission line design, are included with explanations of their applications. Information is presented concerning such aspects as selection of type of construction, conductor sags and tensions, insulation, lightning protection, clearance patterns, galloping conductors, structure limitation and guying charts, and structure spotting. Structure design examples are limited to wood-pole construction. Interpretations of the National Electrical Safety Code and other codes are made as required. Some of the example problems were developed when the sixth edition of NESC was current, and are so noted; however, most examples use the 1977 edition of NESC.

  4. Minimizing Simultaneous Switching Noise at Reduced Power with Power Transmission Lines for

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Minimizing Simultaneous Switching Noise at Reduced Power with Power Transmission Lines for High] by replacing the power plane structure with a power transmission line (PTL). In this paper, a new power switching noise; power transmission line I. INTRODUCTION The rapid increase in data rates and transistor

  5. Volume xx (200y), Number z, pp. 110 3D Line Textures and the Visualization of

    E-Print Network [OSTI]

    Potter, Kristin

    set of line textures which indicate material properties while maintaining interactive frame rates. In this illustration, the sketchiness of the feature edges and material property lines is modified basedVolume xx (200y), Number z, pp. 1­10 3D Line Textures and the Visualization of Confidence

  6. Minimizing Variation in Outdoor CPV Power Ratings: Preprint

    SciTech Connect (OSTI)

    Muller, M.; Marion, B.; Rodriguez, J.; Kurtz, S.

    2011-07-01T23:59:59.000Z

    The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.

  7. Utility Lines and Facilities (Montana)

    Broader source: Energy.gov [DOE]

    These regulations apply to the construction of utility and power lines and facilities. They address the use of public right-of-ways for such construction, underground power lines, and construction...

  8. Maersk Line Equipment guide

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby/%2AOU1a ComplexMaersk Line Equipment

  9. Implications of Strong-Rate-Weakening Friction

    E-Print Network [OSTI]

    Greer, Julia R.

    Implications of Strong-Rate- Weakening Friction for the Length-Scale Dependence of the Strength · Rapid transitions between high static friction and very low dynamic friction · Leads to slip-pulse rupture · Slip pulses are extremely localized and have strong positive feedback between friction and slip

  10. On-line coating of glass with tin oxide by atmospheric pressure chemical vapor deposition.

    SciTech Connect (OSTI)

    Allendorf, Mark D.; Sopko, J.F. (PPF Industries, Pittsburgh, PA); Houf, William G.; Chae, Yong Kee; McDaniel, Anthony H.; Li, M. (PPF Industries, Pittsburgh, PA); McCamy, J.W. (PPF Industries, Pittsburgh, PA)

    2006-11-01T23:59:59.000Z

    Atmospheric pressure chemical vapor deposition (APCVD) of tin oxide is a very important manufacturing technique used in the production of low-emissivity glass. It is also the primary method used to provide wear-resistant coatings on glass containers. The complexity of these systems, which involve chemical reactions in both the gas phase and on the deposition surface, as well as complex fluid dynamics, makes process optimization and design of new coating reactors a very difficult task. In 2001 the U.S. Dept. of Energy Industrial Technologies Program Glass Industry of the Future Team funded a project to address the need for more accurate data concerning the tin oxide APCVD process. This report presents a case study of on-line APCVD using organometallic precursors, which are the primary reactants used in industrial coating processes. Research staff at Sandia National Laboratories in Livermore, CA, and the PPG Industries Glass Technology Center in Pittsburgh, PA collaborated to produce this work. In this report, we describe a detailed investigation of the factors controlling the growth of tin oxide films. The report begins with a discussion of the basic elements of the deposition chemistry, including gas-phase thermochemistry of tin species and mechanisms of chemical reactions involved in the decomposition of tin precursors. These results provide the basis for experimental investigations in which tin oxide growth rates were measured as a function of all major process variables. The experiments focused on growth from monobutyltintrichloride (MBTC) since this is one of the two primary precursors used industrially. There are almost no reliable growth-rate data available for this precursor. Robust models describing the growth rate as a function of these variables are derived from modeling of these data. Finally, the results are used to conduct computational fluid dynamic simulations of both pilot- and full-scale coating reactors. As a result, general conclusions are reached concerning the factors affecting the growth rate in on-line APCVD reactors. In addition, a substantial body of data was generated that can be used to model many different industrial tin oxide coating processes. These data include the most extensive compilation of thermochemistry for gas-phase tin-containing species as well as kinetic expressions describing tin oxide growth rates over a wide range of temperatures, pressures, and reactant concentrations.

  11. 2007 Wholesale Power Rate Case Final Proposal : Wholesale Power Rate Development Study.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    2006-07-01T23:59:59.000Z

    The Wholesale Power Rate Development Study (WPRDS) serves two primary purposes. It synthesizes information supplied by the other final studies that comprise the BPA rate proposal and shows the actual calculations for BPA's power rates. In addition, the WPRDS is the primary source for certain information used in establishing the power rates. Information developed in the WPRDS includes rate design (including seasonal and diurnal shapes for energy rates, demand, and load variance rates), the risk mitigation tools (Cost Recovery Adjustment Clause (CRAC), along with the [N]ational Marine Fisheries Service [F]ederal Columbia River Power System [B]iological Opinion (NFB) Adjustment, the Emergency NFB Surcharge, and Dividend Distribution Clause (DDC)), development of the Slice rate, and all discounts and other adjustments that are included in the rate schedules and the General Rate Schedule Provisions. The WPRDS also includes the description of the methodology for the Cost of Service Analysis (COSA), and the various rate design steps necessary to establish BPA's power rates. The WPRDS also shows the calculations for inter-business line revenues and expenses, the revenue forecast and, finally, includes a description of all of the rate schedules. The actual rate schedules are shown in ''Administrator's Final Record of Decision (ROD), Appendix A: 2007 Wholesale Power Rate Schedules and General Rate Schedule Provisions, WP-07-A-02''. The WPRDS also includes the Partial Resolution of Issues, shown in Attachment 1 of the ROD. The Partial Resolution of Issues affected many of the features described in this study. These are noted where appropriate.

  12. Theoretical X-ray Line Profiles from Colliding Wind Binaries

    E-Print Network [OSTI]

    D. B. Henley; I. R. Stevens; J. M. Pittard

    2003-06-23T23:59:59.000Z

    We present theoretical X-ray line profiles from a range of model colliding wind systems. In particular, we investigate the effects of varying the stellar mass-loss rates, the wind speeds, and the viewing orientation. We find that a wide range of theoretical line profile shapes is possible, varying with orbital inclination and phase. At or near conjunction, the lines have approximately Gaussian profiles, with small widths (HWHM ~ 0.1 v_\\infty) and definite blue- or redshifts (depending on whether the star with the weaker wind is in front or behind). When the system is viewed at quadrature, the lines are generally much broader (HWHM ~ v_\\infty), flat-topped and unshifted. Local absorption can have a major effect on the observed profiles - in systems with mass-loss rates of a few times 10^{-6} Msol/yr the lower energy lines (E wind of the primary. The orbital variation of the line widths and shifts is reduced in a low inclination binary. The extreme case is a binary with i = 0 degrees, for which we would expect no line profile variation.

  13. Online Calibration for Dynamic Traffic Constantinos Antoniou

    E-Print Network [OSTI]

    Bertini, Robert L.

    On­line Calibration for Dynamic Traffic Assignment Constantinos Antoniou October 5, 2007 Seminar­line DTA framework Demand simulator Supply simulator State estimation and model calibration Network calibration approaches include subset of these models Seminar at Portland State University 3 #12;Constantinos

  14. Effective equations for quantum dynamics

    E-Print Network [OSTI]

    Benjamin Schlein

    2012-08-01T23:59:59.000Z

    We report on recent results concerning the derivation of effective evolution equations starting from many body quantum dynamics. In particular, we obtain rigorous derivations of nonlinear Hartree equations in the bosonic mean field limit, with precise bounds on the rate of convergence. Moreover, we present a central limit theorem for the fluctuations around the Hartree dynamics.

  15. Basal melt rates beneath Whillans Ice Stream, West Antarctica

    E-Print Network [OSTI]

    Beem, Lucas H.; Jezek, Ken C.; Van Der Veen, C. J.

    2010-08-05T23:59:59.000Z

    Basal water lubricates and enables the fast flow of the West Antarctic ice streams which exist under low gravitational driving stress. Identification of sources and rates of basal meltwater production can provide insight into the dynamics of ice...

  16. Variable rate CELP speech coding using widely variable parameter updates

    E-Print Network [OSTI]

    Moodie, Myron L.

    1995-01-01T23:59:59.000Z

    bit rates for a given quality level. This work develops new techniques, referred to as widely variable CELP parameter updates, which dynamically adapt the transmit frequency of the CELP spectral parameters to the characteristics of the input speech...

  17. Investigation of the rate sensitivity of pseudo relative permeabilities

    E-Print Network [OSTI]

    Brittain, Charles Finney

    1986-01-01T23:59:59.000Z

    of hypothetical reservoir stratifications were considered. Cross-sectional simulation runs were made using each stratification case for a range of waterflood injection rates and endpoint mobility ratios. Dynamic pseudo relative permeabilities were calculated... , These dynamic pseudo relative permeabilities were developed for those reservoirs that do not satisfy the assumptions of the vertical equilibrium or viscous-dominated pKr models. For waterflooding a stratified oil reservoir, fluid flow rate (velocity...

  18. Rate Schedule CPP-2

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CPP-2 (Supersedes Schedule CPP-1) UNITED STATES DEPARTMENT OF ENERGY WESTERN AREA POWER ADMINISTRATION CENTRAL VALLEY PROJECT SCHEDULE OF RATES FOR CUSTOM PRODUCT POWER Effective:...

  19. LCC Guidance Rates

    Broader source: Energy.gov [DOE]

    Notepad text file provides the LCC guidance rates in a numbered format for the various regions throughout the U.S.

  20. Effective Rate Period

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    charges or credits associated with the creation, termination, or modification to any tariff, contract, or rate schedule accepted or approved by the Federal Energy Regulatory...

  1. Residential Solar Valuation Rates

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Residential Solar Valuation Rates Karl R. Rbago Rbago Energy LLC 1 The Ideal Residential Solar Tariff Fair to the utility and non-solar customers Fair compensation to...

  2. Evidence for Line Broadening by Electron Scattering in the Broad Line Region of NGC 4395

    E-Print Network [OSTI]

    Ari Laor

    2006-01-30T23:59:59.000Z

    A high quality Keck spectrum of the Halpha line in NGC 4395 reveals symmetric exponential wings, fv\\propto e^{-v/sigma}, with sigma~500km/s. The wings extend out to >2500km/s from the line core, and down to a flux density of <10^-3 of the peak flux density. Numerical and analytic calculations indicate that exponential wings are expected for optically thin, isotropic, thermal electron scattering. Such scattering produces exponential wings with sigma=1.1sigma_e(ln tau_e^-1)^0.45, where sigma_e is the electron velocity dispersion, and tau_e is the electron scattering optical depth. The Halpha wings in NGC 4395 are well fit by an electron scattering model with tau_e=0.34, and an electron temperature T_e=1.1x10^4K. Such conditions are produced in photoionized gas with an ionization parameter U=0.3, as expected in the broad line region (BLR). Similar analysis of the [O III] 5007 line yields tau_e<0.01, consistent with the lower ionization in the narrow line region. If the electron scattering interpretation is correct, there should be a tight correlation between tau_e and the ionizing flux on time scales shorter than the BLR dynamical time, or ~1 week for NGC 4395. In contrast, the value of sigma should remain nearly constant on these time scales. Such wings may be discernible in other objects with unusually narrow Balmer lines, and they can provide a useful direct probe of T_e and tau_e in the BLR.

  3. An off-line multiprocessor real-time scheduling algorithm to reduce static energy consumption

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An off-line multiprocessor real-time scheduling algorithm to reduce static energy consumption, France laurent.pautet@telecom-paristech.fr Abstract--Energy consumption of highly reliable real dynamic energy consumption. This paper aims to propose a new off-line schedul- ing algorithm to put

  4. Dynamic Transfer Capability Analysis with Wind Farms and Dynamic Loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    . An investigation on the effect of dynamics loads, wind farms and flexible AC transmission system (FACTS) devices capability unnecessarily limits the power transfers and is a costly and inefficient use of a network with increasing loads, the need to transfer power over long transmission lines increases. Deregulation

  5. The ideal energy of classical lattice dynamics

    E-Print Network [OSTI]

    Margolus, Norman

    2015-01-01T23:59:59.000Z

    We define, as local quantities, the least energy and momentum allowed by quantum mechanics and special relativity for physical realizations of some classical lattice dynamics. These definitions depend on local rates of finite-state change. In two example dynamics, we see that these rates evolve like classical mechanical energy and momentum.

  6. Bipolar pulse forming line

    DOE Patents [OSTI]

    Rhodes, Mark A. (Pleasanton, CA)

    2008-10-21T23:59:59.000Z

    A bipolar pulse forming transmission line module for linear induction accelerators having first, second, third, fourth, and fifth planar conductors which form an interleaved stack with dielectric layers between the conductors. Each conductor has a first end, and a second end adjacent an acceleration axis. The first and second planar conductors are connected to each other at the second ends, the fourth and fifth planar conductors are connected to each other at the second ends, and the first and fifth planar conductors are connected to each other at the first ends via a shorting plate adjacent the first ends. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short a high voltage from the first end of the third planar conductor to the first end of the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.

  7. EC Transmission Line Materials

    SciTech Connect (OSTI)

    Bigelow, Tim S [ORNL

    2012-05-01T23:59:59.000Z

    The purpose of this document is to identify materials acceptable for use in the US ITER Project Office (USIPO)-supplied components for the ITER Electron cyclotron Heating and Current Drive (ECH&CD) transmission lines (TL), PBS-52. The source of material property information for design analysis shall be either the applicable structural code or the ITER Material Properties Handbook. In the case of conflict, the ITER Material Properties Handbook shall take precedence. Materials selection, and use, shall follow the guidelines established in the Materials Assessment Report (MAR). Materials exposed to vacuum shall conform to the ITER Vacuum Handbook. [Ref. 2] Commercial materials shall conform to the applicable standard (e.g., ASTM, JIS, DIN) for the definition of their grade, physical, chemical and electrical properties and related testing. All materials for which a suitable certification from the supplier is not available shall be tested to determine the relevant properties, as part of the procurement. A complete traceability of all the materials including welding materials shall be provided. Halogenated materials (example: insulating materials) shall be forbidden in areas served by the detritiation systems. Exceptions must be approved by the Tritium System and Safety Section Responsible Officers.

  8. Tunneling decay rate in quantum cosmology

    E-Print Network [OSTI]

    Mithani, Audrey T

    2015-01-01T23:59:59.000Z

    In canonical quantum cosmology, the wave function of the universe lacks explicit time dependence. However, time evolution may be present implicitly through the semiclassical superspace variables, which themselves depend on time in classical dynamics. In this paper, we apply this approach to an oscillating universe model recently introduced by Graham et al. By extending the model to include a massless, minimally coupled scalar field $\\phi$ which has little effect on the dynamics but can play the role of a "clock", we determine the decay rate of the oscillating universe.

  9. Tunneling decay rate in quantum cosmology

    E-Print Network [OSTI]

    Audrey T. Mithani; Alexander Vilenkin

    2015-03-02T23:59:59.000Z

    In canonical quantum cosmology, the wave function of the universe lacks explicit time dependence. However, time evolution may be present implicitly through the semiclassical superspace variables, which themselves depend on time in classical dynamics. In this paper, we apply this approach to an oscillating universe model recently introduced by Graham et al. By extending the model to include a massless, minimally coupled scalar field $\\phi$ which has little effect on the dynamics but can play the role of a "clock", we determine the decay rate of the oscillating universe.

  10. Power Rate Cases (pbl/rates)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics Power Electronics PowerPowerRates

  11. Power Rates Announcements (pbl/rates)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics Power Electronics PowerPowerRates

  12. Time-Dependent MHD Shocks and Line Emission: The Case of the DG Tau Jet

    E-Print Network [OSTI]

    Massaglia, S; Bodo, G

    2005-01-01T23:59:59.000Z

    The line emission from a growing number of Herbig-Haro jets can be observed and resolved at angular distances smaller than a few arcseconds from the central source. The interpretation of this emission is problematic, since the simplest model of a cooling jet cannot sustain it. It has been suggested that what one actually observes are shocked regions with a filling factor of $\\sim 1%$. In this framework, up to now, comparisons with observations have been based on stationary shock models. Here we introduce for the first time the self-consistent dynamics of such shocks and we show that considering their properties at different times, i.e. locations, we can reproduce observational data of the DG Tau microjet. In particular, we can interpret the spatial behavior of the [SII]6716/6731 and [NII]/[OI]6583/6300 line intensity ratios adopting a set of physical parameters that yield values of mass loss rates and magnetic fields consistent with previous estimates. We also obtain the values of the mean ionization fraction...

  13. User Interfaces 1 Command Line Interfaces

    E-Print Network [OSTI]

    Verschelde, Jan

    User Interfaces 1 Command Line Interfaces getting arguments of the command line a command line 2013 1 / 39 #12;User Interfaces 1 Command Line Interfaces getting arguments of the command line a command line interface to store points fitting points with polyfit of numpy 2 Encapsulation by Object

  14. 2010FirmRateAdj

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2015 Firm Power Rates & Rate Schedules The Pick-Sloan Missouri Basin Program--Eastern Division: Firm Electric Service Pick Sloan Missouri River -Eastern Division Rates Effective...

  15. Dynamics of Continuous, Discrete and Impulsive Systems Series A: Mathematical Analysis 10 (2003) 127-137

    E-Print Network [OSTI]

    Yu, Pei

    2003-01-01T23:59:59.000Z

    and stability of iced conductor lines [20, 21]. Later, both static #12;128 Kelin Pan and Pei Yu and dynamic in controlling galloping of trans- mission lines [22, 23]. In this paper, the nonlocal and nonlinear theory

  16. ONGOING RESEARCH PROJECTS Model of tropical forest structure and dynamics

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    ONGOING RESEARCH PROJECTS Model of tropical forest structure and dynamics There is a need canopy structure and partitions dynamic rates for a tropical forest on Barro Colorado Island (BCI structure and partitions dynamic rates in a tropical forest. In Review. Journal of Ecology. #12;PPA model

  17. <RatesMiscInfo>

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Rates & Repayment Services Power Reporting MISCELLANEOUS REPORTING Power Supply Report October 2014 (59kb pdf) September 2014 (58kb pdf) August 2014 (47kb pdf) July 2014 (57kb pdf)...

  18. Effective Rate Period

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Regulation and Frequency Response DollarsKW-month 4.56 CV-RFS4 Spinning Reserve The formula rate for spinning reserve service is the price consistent with the California...

  19. Effective Rate Period

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Frequency Response DollarsKW-month 3.98 4.17 CV-RFS4 Spinning Reserve The formula rate for spinning reserve service is the price consistent with the California...

  20. On Thermonuclear Reaction Rates

    E-Print Network [OSTI]

    H. J. Haubold; A. M. Mathai

    1996-12-02T23:59:59.000Z

    Nuclear reactions govern major aspects of the chemical evolution od galaxies and stars. Analytic study of the reaction rates and reaction probability integrals is attempted here. Exact expressions for the reaction rates and reaction probability integrals for nuclear reactions in the case of nonresonant, modified nonresonant, screened nonresonant and resonant cases are given. These are expressed in terms of H-functions, G-functions and in computable series forms. Computational aspects are also discussed.

  1. Derivation of a continuum model and the energy law for moving contact lines with insoluble surfactants

    SciTech Connect (OSTI)

    Zhang, Zhen, E-mail: matzz@nus.edu.sg; Xu, Shixin, E-mail: matxs@nus.edu.sg [Department of Mathematics, National University of Singapore, Singapore 119076 (Singapore); Ren, Weiqing, E-mail: matrw@nus.edu.sg [Department of Mathematics, National University of Singapore, Singapore 119076 (Singapore); Institute of High Performance Computing, Agency for Science, Technology and Research, Singapore 138632 (Singapore)

    2014-06-15T23:59:59.000Z

    A continuous model is derived for the dynamics of two immiscible fluids with moving contact lines and insoluble surfactants based on thermodynamic principles. The continuum model consists of the Navier-Stokes equations for the dynamics of the two fluids and a convection-diffusion equation for the evolution of the surfactant on the fluid interface. The interface condition, the boundary condition for the slip velocity, and the condition for the dynamic contact angle are derived from the consideration of energy dissipations. Different types of energy dissipations, including the viscous dissipation, the dissipations on the solid wall and at the contact line, as well as the dissipation due to the diffusion of surfactant, are identified from the analysis. A finite element method is developed for the continuum model. Numerical experiments are performed to demonstrate the influence of surfactant on the contact line dynamics. The different types of energy dissipations are compared numerically.

  2. Pulse shaping with transmission lines

    DOE Patents [OSTI]

    Wilcox, Russell B. (Oakland, CA)

    1987-01-01T23:59:59.000Z

    A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.

  3. Pulse shaping with transmission lines

    DOE Patents [OSTI]

    Wilcox, R.B.

    1985-08-15T23:59:59.000Z

    A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.

  4. Electrical transmission line diametrical retainer

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David (Lehi, UT); Dahlgren, Scott (Provo, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT); Fox, Joe (Spanish Fork, UT)

    2004-12-14T23:59:59.000Z

    The invention is a mechanism for retaining an electrical transmission line. In one embodiment of the invention it is a system for retaining an electrical transmission line within down hole components. In accordance with one aspect of the invention, the system includes a plurality of downhole components, such as sections of pipe in a drill string. The system also includes a coaxial cable running between the first and second end of a drill pipe, the coaxial cable having a conductive tube and a conductive core within it. The invention allows the electrical transmission line to with stand the tension and compression of drill pipe during routine drilling cycles.

  5. Design considerations of translmission line superconductors for fast-cycling accelerator magnets

    SciTech Connect (OSTI)

    Piekarz, H.; /Fermilab

    2008-07-01T23:59:59.000Z

    Novel design options of HTS and LTS superconductor lines for fast-cycling accelerator magnets are presented. The cryogenic power losses in using these conductors in transmission line application to energize the accelerator magnet string are discussed. A test arrangement to measure power loss of the proposed superconductor lines operating up to 2 T/s ramp rate and 0.5 Hz repetition cycle is described.

  6. Transmission Lines Emulating Moving Media

    E-Print Network [OSTI]

    Vehmas, Joni; Tretyakov, Sergei

    2014-01-01T23:59:59.000Z

    In this paper, we show how the electromagnetic phenomena in moving magnetodielectric media can be emulated using artificial composite structures at rest. In particular, we introduce nonreciprocal periodically loaded transmission lines which support waves obeying the same rules as plane electromagnetic waves in moving media. Because the actual physical structure is at rest, in these transmission lines there are no fundamental limitations on the velocity values, which may take values larger than the speed of light or even complex values (considering complex amplitudes in the time-harmonic regime). An example circuit of a unit cell of a "moving" transmission line is presented and analyzed both numerically and experimentally. The special case of composite right/left handed host line is also studied numerically. Besides the fundamental interest, the study is relevant for potential applications in realizing engineered materials for various transformations of electromagnetic fields.

  7. The beauty of laser lines

    E-Print Network [OSTI]

    Kim, Sue-Mie

    1993-01-01T23:59:59.000Z

    A line, the simplest way to express an artist's feelings or interpretation of an object, has its own emotions that an artist can employ for her purpose. Laser light, the most self-concentrated, self-sustained and directed, ...

  8. Authorization of Line Extension (Nebraska)

    Broader source: Energy.gov [DOE]

    Any entity permitted to establish an electric light and power plant, and/or transmission or distribution lines within a city, village, or public electric light and power district, may also extend...

  9. VISAR: Line-imaging interferometer

    SciTech Connect (OSTI)

    Hemsing, W.F.; Mathews, A.R.; Warnes, R.H.; George, M.J.; Whittemore, G.R.

    1991-01-01T23:59:59.000Z

    A line-imaging Velocity Interferometer System for Any Reflector (VISAR) was applied to measure velocity across the diameter of a metal plate explosively accelerated to 5.5 km/s. Amplified, single- frequency laser light was focused to illuminate a line on the metal surface. The line's image was focused through the interferometer to a streak camera that swept in time and recorded directly on film. During the experiment, the Doppler-shift caused motion of the interference fringes. Analysis of the digitized film record yielded a continuum of time-resolved velocity histories. Velocity gradients across the plate that first swept radially inward, then reflected outward, were clearly measured. Increased power provided by the laser amplifier greatly improved the signal-to-noise ratio compared to our previous line VISAR experiments. 5 refs., 8 figs.

  10. Analysis of interconnect microstrip lines

    E-Print Network [OSTI]

    Luong, Giam-Minh

    1992-01-01T23:59:59.000Z

    of the return loss of the slot-coupled microstrip dipole. Section C presents two simulations of the return loss on the slot- coupled rectangular patch antenna. A. Interconnect of Microstrip Lines Several circuits with the geometry of Figure 1 were fabricated.... Experimental and Theoretical Results of the Interconnect Two circuits were designed and fabricated. Each circuit consists of two substrates as shown in Figure 9. One substrate has an open microstrip line etched in one side and an aperture etched...

  11. Fin-line horn antenna

    DOE Patents [OSTI]

    Reindel, John (San Diego, CA)

    1990-01-01T23:59:59.000Z

    A fin line circuit card containing a fin line slot feeds a dipole antenna ich extends a quarterwave outside the waveguide and provides an energy beam focal point at or near the open end of the waveguide. The dipole antenna thus maintains a wide and nearly constant beamwidth, low VSWR and a circular symmetric radiation pattern for use in electronic warfare direction finding and surveillance applications.

  12. Electrical and mechanical design criteria for EHV and UHV: overhead transmission lines

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    The results are presented of a program devoted to the selection of electrical and mechanical design criteria and parameters for overhead power transmission lines for ac systems rated at from 345 to 1100 kV and for dc systems rated at from 600 to 1200 kV. Information is included on the environmental effects, i.e., audible noise and electric fields, of the lines, mechanical and economic requirements, safety, failures, grounding, and lightning protection. (LCL)

  13. Fusion burn dynamics in dense Z-pinches (DZP)

    SciTech Connect (OSTI)

    Krakowski, R.A.; Miller, R.L.; Bathke, C.G.; Werley, K.A.; Hagenson, R.L. (Los Alamos National Lab., NM (USA); Phillips Petroleum Co., Bartlesville, OK (USA))

    1989-01-01T23:59:59.000Z

    The fusion burn dynamics and energy yield of the dense Z-pinch (DZP) are examined using a profile-averaged, zero-dimensional time-dependent model. A range of conditions (fuel, line density, voltage, fusion-product heating, enthalpy endless, density and temperature profiles, current rise rate, electrode impurities) are examined. Magneto-hydrodynamic stability is assumed, and initial conditions are based on those ideally existing after the melting and ionization of a solid fiber of fusion fuel. Plasma-conditions required of neutron sources for materials testing ({dot S}{sub n} {ge} 10{sup 19} n/s) and for possible commercial power production are examined. 25 refs., 9 figs.

  14. Transition state theory: Variational formulation, dynamical corrections, and error estimates

    E-Print Network [OSTI]

    Van Den Eijnden, Eric

    Transition state theory: Variational formulation, dynamical corrections, and error estimates Eric, Brazil Received 18 February 2005; accepted 9 September 2005; published online 7 November 2005 Transition which aim at computing dynamical corrections to the TST transition rate constant. The theory

  15. Short GRBs: Rates and luminosity function implications

    E-Print Network [OSTI]

    Dafne Guetta

    2006-10-13T23:59:59.000Z

    We compare the luminosity function and rate inferred from the BATSE short hard bursts (SHBs) peak flux distribution with the redshift and luminosity distributions of SHBs observed by Swift/HETE II. The Swift/HETE II SHB sample is incompatible with SHB population that follows the star formation rate. However, it is compatible with a distribution of delay times after the SFR. This would be the case if SHBs are associated with the mergers of double neutron star (DNS) systems. DNS may be ``primordial'' or can form dynamically by binary exchange interaction in globular clusters during core collapse. The implied SHB rates that we find range from \\sim 8 to \\sim 30h_(70)^3 Gpc^(-3)yr^(-1). This rate is a much higher than what was previously estimated and, when beaming is taken into account, it is comparable to the rate of neutron star mergers estimated from statistics of binary pulsars. If GRBs are produced in mergers the implied rate practically guarantees detection by LIGO II and possibly even by LIGO I.

  16. Sliding Mode Flow Rate Observer Design Song Liu and Bin Yao

    E-Print Network [OSTI]

    Yao, Bin

    pressure measurements and unavoidable modelling uncertainties. This paper proposes a sliding mode dynamicSliding Mode Flow Rate Observer Design Song Liu and Bin Yao School of Mechanical Engineering rate from fluid pressure dynamic equations usually results in poor estimates due to the very noisy

  17. Florida Electric Transmission Line Siting Act (Florida)

    Broader source: Energy.gov [DOE]

    The Transmission Line Siting Act (TLSA) is the state’s centralized process for licensing electrical transmission lines which; (a) are 230 kV or larger; (b) cross a county line; and, (c) are 15...

  18. Fractal diffusion coefficient from dynamical zeta functions

    E-Print Network [OSTI]

    G. Cristadoro

    2005-09-28T23:59:59.000Z

    Dynamical zeta functions provide a powerful method to analyze low dimensional dynamical systems when the underlying symbolic dynamics is under control. On the other hand even simple one dimensional maps can show an intricate structure of the grammar rules that may lead to a non smooth dependence of global observable on parameters changes. A paradigmatic example is the fractal diffusion coefficient arising in a simple piecewise linear one dimensional map of the real line. Using the Baladi-Ruelle generalization of the Milnor-Thurnston kneading determinant we provide the exact dynamical zeta function for such a map and compute the diffusion coefficient from its smallest zero.

  19. Rehab permits desert line to run at original pressures

    SciTech Connect (OSTI)

    Kurdi, A.M.; Abougfeefa, M.S. (Agip Oil Co. Ltd., Tripoli (Libyan Arab Jamahiriya)); Denney, A.K. (John Brown Engineering and Constructors Ltd., London (United Kingdom))

    1993-07-26T23:59:59.000Z

    An extensive inspection and rehabilitation program on a 34-in. desert pipeline in gas-condensate service has restored the line to full operating pressures and ensured the line's active service life for at least 20 years. Since Agip Oil Co. Ltd. built the 133-km pipeline in 1972 using API 5L Grade X-60, it has suffered six known failures. There has been no single cause of the failures. As a consequence of the failures, the line has been progressively down rated from the original operating pressure of 700 psig to 500 psig. So that the line could again be operated between 650 and 700 psig, two options have been considered: extensive study and investigation leading to inspection and replacement of suspect pipe: total replacement of the line. These options were evaluated from economic and safety points of view. A major consideration was that the line will be operating in its current manner for only the next 2 years before changing to dry-gas transportation. The first option was therefore considered viable. The paper discusses the failure mechanisms, the history of hydrogen-induced cracking, the 1989 failure, survey results, calculation of acceptable pressures, and the rehabilitation program.

  20. Dynamic Tides in Close Binaries

    E-Print Network [OSTI]

    B. Willems

    2005-11-10T23:59:59.000Z

    The basic theory of dynamic tides in close binaries is reviewed. Particular attention is paid to resonances between dynamic tides and free oscillation modes and to the role of the apsidal-motion rate in probing the internal structure of binary components. The discussed effects are generally applicable to stars across the entire Hertzsprung-Russell diagram, including the binary OB-stars discussed at this meeting.

  1. Dynamic Modeling in Solid-Oxide Fuel Cells Controller Design

    SciTech Connect (OSTI)

    Lu, Ning; Li, Qinghe; Sun, Xin; Khaleel, Mohammad A.

    2007-06-28T23:59:59.000Z

    In this paper, a dynamic model of the solid-oxide fuel cell (SOFC) power unit is developed for the purpose of designing a controller to regulate fuel flow rate, fuel temperature, air flow rate, and air temperature to maintain the SOFC stack temperature, fuel utilization rate, and voltage within operation limits. A lumped model is used to consider the thermal dynamics and the electro-chemial dynamics inside an SOFC power unit. The fluid dynamics at the fuel and air inlets are considered by using the in-flow ramp-rates.

  2. What can emission lines tell us?

    E-Print Network [OSTI]

    G. Stasinska

    2007-04-03T23:59:59.000Z

    1 Generalities 2 Empirical diagnostics based on emission lines 3 Photoionization modelling 4 Pending questions 5 Appendix: Lists of useful lines and how to deal with them

  3. Complex Dynamics

    E-Print Network [OSTI]

    Complex Dynamics Bernardo Da Costa, Koushik Ramachandran, Jingjing Qu, and I had a two semester learning seminar in complex analysis and potential ...

  4. Rotational rate sensor

    DOE Patents [OSTI]

    Hunter, Steven L. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    A rate sensor for angular/rotational acceleration includes a housing defining a fluid cavity essentially completely filled with an electrolyte fluid. Within the housing, such as a toroid, ions in the fluid are swept during movement from an excitation electrode toward one of two output electrodes to provide a signal for directional rotation. One or more ground electrodes within the housing serve to neutralize ions, thus preventing any effect at the other output electrode.

  5. Previous Power Rates

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergyEnergy InnovationRecentPreviouspower-rates

  6. Previous Transmission Rates

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergyEnergytransmission-rates Sign In About |

  7. Minimizing Variation in Outdoor CPV Power Ratings (Presentation)

    SciTech Connect (OSTI)

    Muller, M.

    2011-04-01T23:59:59.000Z

    Presented at the 7th International Conference on Concentrating Photovoltaic Systems (CPV-7), 4-6 April 2011, Las Vegas, Nevada. The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.

  8. Dumbarton Express Line DB heading to Stanford Oval. AC Transit Line U on Palm Drive.

    E-Print Network [OSTI]

    Dumbarton Express Line DB heading to Stanford Oval. AC Transit Line U on Palm Drive. Photo: Karl Nielsen Photo: Dong Wang Schedules: AC Transit Line U Dumbarton Express Line DB Connections with BART Transit Line U Line U provides express service between Stanford and the Fremont BART station. Other East

  9. Size structuring of planktonic communities : biological rates and ecosystem dynamics

    E-Print Network [OSTI]

    Taniguchi, Darcy Anne Akiko

    2013-01-01T23:59:59.000Z

    Kohfeld, L. Legendre, M. Manizza, T. Platt, R. B. Rivkin, S.J. J. Cullen, B. Irwin, and T. Platt. 1983. AutotrophicMol. Biol. Rev. 63:106- Platt, T. , and K. Denman. 1977.

  10. Size structuring of planktonic communities : biological rates and ecosystem dynamics

    E-Print Network [OSTI]

    Taniguchi, Darcy Anne Akiko

    2013-01-01T23:59:59.000Z

    and nutrient enriched ecosystems. Limnology and Oceanographyin the pelagic ecosystem. Helgol. Wiss. Meeresunters. 30:Size-structured planktonic ecosystems: constraints, controls

  11. A study of spring rates of dynamically loaded helical springs 

    E-Print Network [OSTI]

    Whitwell, Franklin Carroll

    1965-01-01T23:59:59.000Z

    in 'Table 7, the curves in Figure 15 are of doubtful accuracy Table 2. Test Results for Spring No. Run No. lbf 5. 8 5. 8 5. 8 5. 8 5. 8 1d lbf lbf 5. 8 5. 8 5. 8 5. 8 5. 8 F2' lbf 36. 4 36. 4 36. 4 36. 4 36. 4 '2d lbf F2 lbf 36. 4... 33. 2 23. 5 0. 184 0. 184 0. 184 0. 184 0. 172 0. 684 0. 684 0. 684 0. 684 0. 472 25. 0 28. 6 33. 0 39. 9 0 47. 3 47. 3 47. 3 47. 3 48. 5 Table 2 (Cont. ) Run No. 1 1d 1 2 2ti 2 1 Y2 f k lbf lbf lbf lbf lbf lbf in . in. cps 1...

  12. A study of spring rates of dynamically loaded helical springs

    E-Print Network [OSTI]

    Whitwell, Franklin Carroll

    1965-01-01T23:59:59.000Z

    95. 0 95. 0 95. 0 41 Table 9. Dimensionless Values Run Numbers Inclusive F2/F. l Y2/YI Key for Figure 14 1 ? 12 13 -24 25 ? 36 3. 48 2. 63 3. 39 3. 72 2. 74 3. 39 37 - 48 49 ? 60 61- 72 12. 00 8. 98 5. 81 12. 00 8. 72 5. 58... Y2 Yl FIGURE 14. GRAPH Of VALUES FROM TABLE 9 FOR ALL SPRINGS EXCEPT NO. 6 44 55 54 / / / t 52 51 50 49 48 F2 Ibf 47 45 44 43 / / I / / / / / / / / / / / / / / / / / / / / / q/ G / Q&l qP/ / / / / i...

  13. Quasistellar Objects: Intervening Absorption Lines

    E-Print Network [OSTI]

    Jane C. Charlton; Christopher W. Churchill

    2000-05-31T23:59:59.000Z

    We briefly review, at a level appropriate for graduate students and non-specialists, the field of quasar absorption lines (QALs). Emphasis is on the intervening absorbers. We present the anatomy of a quasar spectrum due to various classes of intervening absorption systems, and a brief historical review of each absorber class (Lyman-alpha forest and Lyman limit systems, and metal-line and damped Lyman-alpha absorbers). We also provide several heuristic examples on how the physical properties of both the intergalactic medium and the gaseous environments associated with earlier epoch galaxies can be inferred from QALs. The evolution of these environments from z=4 are discussed.

  14. Current Power Rates

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution4 Department ofDepartmentPower-Rates Sign In About |

  15. Current Transmission Rates

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution4 Department ofDepartmentPower-Rates Sign

  16. [FIXED RATE GUARANTEED OBLIGATIONS]

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015Visiting Strong,Women @JoinEnergy ZEROFIXED RATE GUARANTEED

  17. Settlement PF Exchange Rates

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9 SeptemberSetting the Stage for the Next SolarRate

  18. Vortex driven flame dynamics and combustion instability

    E-Print Network [OSTI]

    Altay, Hurrem Murat

    2005-01-01T23:59:59.000Z

    Combustion instability in premixed combustors mostly arises due to the coupling between heat release rate dynamics and system acoustics. It is crucial to understand the instability mechanisms to design reliable, high ...

  19. Plasticity of metallic nanostructures : molecular dynamics simulations 

    E-Print Network [OSTI]

    Healy, Con

    2014-11-27T23:59:59.000Z

    During high speed cutting processes, metals are subject to high strains and strain rates. The dynamic nature of the deformation during high speed cutting makes it difficult to detect atomic scale deformation mechanisms ...

  20. Camera Calibration Using Line Correspondences

    E-Print Network [OSTI]

    Hartley, Richard

    Camera Calibration Using Line Correspondences Richard I. Hartley G.E. CRD, Schenectady, NY, 12301. The three cameras may have different unknown calibrations, and the essential matrices corresponding to each, camera calibration and scene reconstruction. In the case where all the three cameras are assumed to have

  1. Initial Studies Toward Real-Time Transmission Path Rating

    SciTech Connect (OSTI)

    Singh, Ruchi; Diao, Ruisheng; Cai, Niannian; Huang, Zhenyu; Tuck, Brian; Guo, Xinxin

    2012-07-26T23:59:59.000Z

    Demand continues to increase while transmission line construction is being constrained by multiple factors— economic, environmental, and political. Effective and efficient utilization of transmission lines is thus of great importance in an open access environment. Large blocks of power are transferred from areas with inexpensive generation to heavy load demand areas or areas with high generation costs. This results in some transmission paths being loaded closer to their path ratings, which limits further power transfer between areas. Traditionally, rating of important paths was determined off line by assuming the worst-case study scenario; once determined, it could be used for years. With increasing uncertainty arising from rapid growth of renewable energy and smart technologies, path rating studies are needed in near-real time to account for the latest system status and support a reliable and economic power grid. This paper adopts a simplified procedure based on standards of the North American Electric Reliability Corporation (NERC) to determine total transfer capability (TTC) or transfer limit for the purpose of demonstrating the benefits and necessity of real-time path rating. Initial studies are conducted to compute TTC of a two-area test system and a 39-bus test system. Results indicate that path rating can be significantly affected by loading conditions, generator schedules, system topology and other factors.

  2. Energy Management Through Innovative Rates

    E-Print Network [OSTI]

    Williams, M. L.

    1982-01-01T23:59:59.000Z

    of energy efficiency in the industrial sector and specific rate design alternatives for doing so....

  3. Aerosol penetration through transport lines

    E-Print Network [OSTI]

    Dileep, V.R.

    1996-01-01T23:59:59.000Z

    to predict aerosol penetration thrush shrouded probes and transition fitting('s. Experimnents were carried Out to validate the code. The experiments were carried out for different flow rates for a particle size of IO lam aerodynamic diameter (AD...

  4. Efficient generic on-line/off-line (threshold) signatures without key exposure q

    E-Print Network [OSTI]

    Kim, Kwangjo

    security requirements. Ó 2008 Elsevier Inc. All rights reserved. 1. Introduction The notion of on-line/off-line manufacturing process or as a background computation whenever the card is connected to power, and the on-lineEfficient generic on-line/off-line (threshold) signatures without key exposure q Xiaofeng Chen a

  5. The MICE Muon Beam Line

    SciTech Connect (OSTI)

    Apollonio, Marco [High Energy Physics Group, Department of Physics, Imperial College London SW7 2AZ (United Kingdom)

    2011-10-06T23:59:59.000Z

    In the Muon Ionization Cooling Experiment (MICE) at RAL, muons are produced and transported in a dedicated beam line connecting the production point (target) to the cooling channel. We discuss the main features of the beamline, meant to provide muons with momenta between 140 MeV/c and 240 MeV/c and emittances up to 10 mm rad, which is accomplished by means of a diffuser. Matching procedures to the MICE cooling channel are also described. In summer 2010 we performed an intense data taking campaign to finalize the calibration of the MICE Particle Identification (PID) detectors and the understanding of the beam line, which completes the STEPI phase of MICE. We highlight the main results from these data.

  6. In-line thermoelectric module

    DOE Patents [OSTI]

    Pento, Robert (Algonquin, IL); Marks, James E. (Glenville, NY); Staffanson, Clifford D. (S. Glens Falls, NY)

    2000-01-01T23:59:59.000Z

    A thermoelectric module with a plurality of electricity generating units each having a first end and a second end, the units being arranged first end to second end along an in-line axis. Each unit includes first and second elements each made of a thermoelectric material, an electrically conductive hot member arranged to heat one side of the first element, and an electrically conductive cold member arranged to cool another side of the first element and to cool one side of the second element. The hot member, the first element, the cold member and the second element are supported in a fixture, are electrically connected respectively to provide an electricity generating unit, and are arranged respectively in positions along the in-line axis. The individual components of each generating unit and the respective generating units are clamped in their in-line positions by a loading bolt at one end of the fixture and a stop wall at the other end of the fixture. The hot members may have a T-shape and the cold members an hourglass shape to facilitate heat transfer. The direction of heat transfer through the hot members may be perpendicular to the direction of heat transfer through the cold members, and both of these heat transfer directions may be perpendicular to the direction of current flow through the module.

  7. National Utility Rate Database: Preprint

    SciTech Connect (OSTI)

    Ong, S.; McKeel, R.

    2012-08-01T23:59:59.000Z

    When modeling solar energy technologies and other distributed energy systems, using high-quality expansive electricity rates is essential. The National Renewable Energy Laboratory (NREL) developed a utility rate platform for entering, storing, updating, and accessing a large collection of utility rates from around the United States. This utility rate platform lives on the Open Energy Information (OpenEI) website, OpenEI.org, allowing the data to be programmatically accessed from a web browser, using an application programming interface (API). The semantic-based utility rate platform currently has record of 1,885 utility rates and covers over 85% of the electricity consumption in the United States.

  8. Introduction Linear Dynamics

    E-Print Network [OSTI]

    Zeghib, Abdelghani

    Introduction Results Linear Dynamics Lorentz Dynamics Actions of discrete groups on stationary Piccione) Geodeycos Meeting, Lyon, 28-30 April 2010 Abdelghani Zeghib Dynamics on Lorentz manifolds #12;Introduction Results Linear Dynamics Lorentz Dynamics Motivations and questions Examples 1 Introduction

  9. Last Passage Percolation with a Defect Line and the Solution of the Slow Bond Problem

    E-Print Network [OSTI]

    Riddhipratim Basu; Vladas Sidoravicius; Allan Sly

    2014-08-18T23:59:59.000Z

    We address the question of how a localized microscopic defect, especially if it is small with respect to certain dynamic parameters, affects the macroscopic behavior of a system. In particular we consider two classical exactly solvable models: Ulam's problem of the maximal increasing sequence and the totally asymmetric simple exclusion process. For the first model, using its representation as a Poissonian version of directed last passage percolation on $\\mathbb R^2$, we introduce the defect by placing a positive density of extra points along the diagonal line. For the latter, the defect is produced by decreasing the jump rate of each particle when it crosses the origin. The powerful algebraic tools for studying these processes break down in the perturbed versions of the models. Taking a more geometric approach we show that in both cases the presence of an arbitrarily small defect affects the macroscopic behavior of the system: in Ulam's problem the time constant increases, and for the exclusion process the flux of particles decreases. This, in particular, settles the longstanding Slow Bond Problem.

  10. MEASUREMENT, FILTERING AND CONTROL IN QUANTUM OPEN DYNAMICAL SYSTEMS.

    E-Print Network [OSTI]

    Belavkin, Viacheslav P.

    Markovian dynam- ical system with a quantum linear transmission line is studied. The optimal quantum multi-stage decision rule consisting of the classical linear optimal control strategy and quantum optimal ...lteringMEASUREMENT, FILTERING AND CONTROL IN QUANTUM OPEN DYNAMICAL SYSTEMS. V. P. BELAVKIN Abstract

  11. Optimal Measurement and Control in Quantum Dynamical Systems.

    E-Print Network [OSTI]

    Belavkin, Viacheslav P.

    Optimal Measurement and Control in Quantum Dynamical Systems. V P Belavkin Institute of Physics-dimensional linear Markovian dynamical system with a quantum linear transmission line is studied. The optimal quantum multi-stage decision rule consisting of the classical linear optimal control strategy and quantum

  12. Motion Planning Using Dynamic Roadmaps Marcelo Kallmann and Maja Mataric

    E-Print Network [OSTI]

    Mataric, Maja J.

    Motion Planning Using Dynamic Roadmaps Marcelo Kallmann and Maja Mataric Interaction Lab, Computer, mataric}@usc.edu Abstract - We evaluate the use of dynamic roadmaps for on- line motion planning and nodes of a precomputed roadmap are updated accordingly. We concentrate in this paper on analyzing

  13. Enhancement of the helium resonance lines in the solar atmosphere by suprathermal electron excitation II: non-Maxwellian electron distributions

    E-Print Network [OSTI]

    G. R. Smith

    2003-06-20T23:59:59.000Z

    In solar EUV spectra the He I and He II resonance lines show unusual behaviour and have anomalously high intensities compared with other transition region lines. The formation of the helium resonance lines is investigated through extensive non-LTE radiative transfer calculations. The model atmospheres of Vernazza, Avrett & Loeser are found to provide reasonable matches to the helium resonance line intensities but significantly over-estimate the intensities of other transition region lines. New model atmospheres have been developed from emission measure distributions derived by Macpherson & Jordan, which are consistent with SOHO observations of transition region lines other than those of helium. These models fail to reproduce the observed helium resonance line intensities by significant factors. The possibility that non-Maxwellian electron distributions in the transition region might lead to increased collisional excitation rates in the helium lines is studied. Collisional excitation and ionization rates are re-computed for distribution functions with power law suprathermal tails which may form by the transport of fast electrons from high temperature regions. Enhancements of the helium resonance line intensities are found, but many of the predictions of the models regarding line ratios are inconsistent with observations. These results suggest that any such departures from Maxwellian electron distributions are not responsible for the helium resonance line intensities.

  14. Phytoplankton blooms and fish recruitment rate: Effects of spatial distribution

    E-Print Network [OSTI]

    Biktashev, Vadim N.

    Phytoplankton blooms and fish recruitment rate: Effects of spatial distribution V. N. Biktashev a consider the spatio-temporal dynamics of a spatially-structured generalisa- tion of the phytoplankton-zooplankton-fish. In particular, we study the dependence of the fish recruitment on carrying capacities of the plankton subsystem

  15. MECHANICAL PROPERTIES AND MICROSTRUCTURAL EVOLUTIONS AT HIGH STRAIN RATES OF

    E-Print Network [OSTI]

    Gubicza, Jenõ

    characteristics of high purity nickel processed by electrodeposition tested in compression up to a dynamic strainMECHANICAL PROPERTIES AND MICROSTRUCTURAL EVOLUTIONS AT HIGH STRAIN RATES OF ELECTRODEPOSITED NICKEL H. Couque1 , A. Ouarem2 , G. Dirras2 and J. Gubicza3 Summary ­ The mechanical and microstructural

  16. Upper Great Plains Rates information

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ancillary Services Rate Data (2.4mb pdf) Transmission and Ancillary Services 2011 Rate True-up Calculation (3.4mb pdf) Power Reporting Miscellaneous Information If you have any...

  17. 2007 Wholesale Power Rate Schedules : 2007 General Rate Schedule Provisions.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    2006-11-01T23:59:59.000Z

    This schedule is available for the contract purchase of Firm Power to be used within the Pacific Northwest (PNW). Priority Firm (PF) Power may be purchased by public bodies, cooperatives, and Federal agencies for resale to ultimate consumers, for direct consumption, and for Construction, Test and Start-Up, and Station Service. Rates in this schedule are in effect beginning October 1, 2006, and apply to purchases under requirements Firm Power sales contracts for a three-year period. The Slice Product is only available for public bodies and cooperatives who have signed Slice contracts for the FY 2002-2011 period. Utilities participating in the Residential Exchange Program (REP) under Section 5(c) of the Northwest Power Act may purchase Priority Firm Power pursuant to the Residential Exchange Program. Rates under contracts that contain charges that escalate based on BPA's Priority Firm Power rates shall be based on the three-year rates listed in this rate schedule in addition to applicable transmission charges. This rate schedule supersedes the PF-02 rate schedule, which went into effect October 1, 2001. Sales under the PF-07 rate schedule are subject to BPA's 2007 General Rate Schedule Provisions (2007 GRSPs). Products available under this rate schedule are defined in the 2007 GRSPs. For sales under this rate schedule, bills shall be rendered and payments due pursuant to BPA's 2007 GRSPs and billing process.

  18. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, R.J.; Small, G.J.; Shields, P.A.

    1999-04-27T23:59:59.000Z

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes. 21 figs.

  19. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, Ryszard J. (Ames, IA); Small, Gerald J. (Ames, IA); Shields, Peter A. (Reading, MA)

    1999-04-27T23:59:59.000Z

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes.

  20. FB Line Basis for Interim Operation

    SciTech Connect (OSTI)

    Shedrow, B.

    1998-10-19T23:59:59.000Z

    The safety analysis of the FB-Line Facility indicates that the operation of FB-Line to support the current mission does not present undue risk to the facility and co-located workers, general public, or the environment.

  1. Effect of Rail Rate Deregulation: The Case of Wheat Exports from the South Plains.

    E-Print Network [OSTI]

    Fuller, Stephen; Shanmugham, C. V.

    1982-01-01T23:59:59.000Z

    I line-haul railroads. The railroad freight rate index, constructed by the Bureau of Labor Statistics, was used to update estimated rail cost parameters to 1977. To facilitate the estimation of the variable cost parameters, a rail cost algorithm... Country Elevator, Inland Terminal, and Port Terminal Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Commercial Truck Transportation Rates . . . . . . . . . . . . . . . . . . . . . . 7 Barge...

  2. Line-focus sun trackers

    SciTech Connect (OSTI)

    Gee, R.

    1980-05-01T23:59:59.000Z

    Sun trackers have been a troublesome component for line-focus concentrating collector systems. The problems have included poor accuracy, component failures, false locks on clouds, and restricted tracker operating ranges. In response to these tracking difficulties, a variety of improved sun trackers have been developed. A testing program is underway at SERI to determine the tracking accuracy of this new generation of sun trackers. The three major types of trackers are defined, some recent sun tracker developments are described, and the testing that is underway is outlined.

  3. Radiative transfer in molecular lines

    E-Print Network [OSTI]

    A. Asensio Ramos; J. Trujillo Bueno; J. Cernicharo

    2001-02-15T23:59:59.000Z

    The highly convergent iterative methods developed by Trujillo Bueno and Fabiani Bendicho (1995) for radiative transfer (RT) applications are generalized to spherical symmetry with velocity fields. These RT methods are based on Jacobi, Gauss-Seidel (GS), and SOR iteration and they form the basis of a new NLTE multilevel transfer code for atomic and molecular lines. The benchmark tests carried out so far are presented and discussed. The main aim is to develop a number of powerful RT tools for the theoretical interpretation of molecular spectra.

  4. ShaRE Credit Line

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclearHomelandMultivariate Metal-Organic FrameworksCredit Line

  5. Line Management Perspective: National Nuclear Security Administration...

    Broader source: Energy.gov (indexed) [DOE]

    National Nuclear Security Administration (NNSA) Line Management Perspective: National Nuclear Security Administration (NNSA) Addthis Description Slide Presentation by Jim...

  6. Methods of Using Existing Wire Lines (power lines, phone lines, internet lines) for Totally Secure Classical Communication Utilizing Kirchoff's Law and Johnson-like Noise

    E-Print Network [OSTI]

    Laszlo B. Kish

    2006-10-02T23:59:59.000Z

    We outline some general solutions to use already existing and currently used wire lines, such as power lines, phone lines, internet lines, etc, for the unconditionally secure communication method based on Kirchoff's Law and Johnson-like Noise (KLJN). Two different methods are shown. One is based on filters used at single wires and the other one utilizes a common mode voltage superimposed on a three-phase powerline.

  7. Methods of Using Existing Wire Lines (power lines, phone lines, internet lines) for Totally Secure Classical Communication Utilizing Kirchoff's Law and Johnson-like Noise

    E-Print Network [OSTI]

    Kish, L B

    2006-01-01T23:59:59.000Z

    We outline some general solutions to use already existing and currently used wire lines, such as power lines, phone lines, internet lines, etc, for the unconditionally secure communication method based on Kirchoff's Law and Johnson-like Noise (KLJN). Two different methods are shown. One is based on filters used at single wires and the other one utilizes a common mode voltage superimposed on a three-phase powerline.

  8. Discontinuities in transmission lines and wave guides

    E-Print Network [OSTI]

    Mathis, Harold Fletcher

    1952-01-01T23:59:59.000Z

    DISCONTINUITIES IN TRANSMISSION LINES AND WAVEGUIDES H. F. MATHIS DISCONTINUITIES IN TRANSMISSION LINES AND liVAVNGUIDBS A Thesis By Harola Fletcher htathis Approved as to style and content by: Chairman of Committee DISCONTINUITIES... Subject. Electrical Engineering COHERENT S PAGE I Introduct ion, II Dl. scontlnuit les in Transmission Lines 2 1. Some Seneral char aeter 1 st 1 ca of the transmission lines. . . , . . . , ~ 5 2 ~ 2. Types of dlscontlnuitles ln transmls- sl...

  9. Radiological engineering evaluation of the delay line air scrubber located at the Clinton P. Anderson Meson Physics Facility (LAMPF)

    E-Print Network [OSTI]

    Huneycutt, Scott Edward

    1996-01-01T23:59:59.000Z

    . . . . . Source Term Calculation. . . . . . . . . . . . . . Dose Rate Calculations . . . . . . . 7 . . . . 14 . . . . . 15 . . . . . 15 . . . . . 16 . . . . . 16 . . . . . I 7 . . . . . I 8 . . . . 19 Delay Line Air Scrubber. Water Diagnostic Line...: PREDICTION SPREADSHEET. . . . . . . . 64 APPENDIX C: MICROSHIELD MODEL. . . . . . . . . 72 . . . . 160 LIST OF FIGURES Page Figure 1: Diagram of LAMPF showing the five major areas of the linac . . . Figure 2: Layout of the LAMPF Switchyard...

  10. Integration of angular rate sensors for line of sight stabilization systems 

    E-Print Network [OSTI]

    Loe, Gregory Ross

    1997-01-01T23:59:59.000Z

    of integrating signals is provided. A comparison of the different methods applied to a particular system is also provided. It is shown that, in some cases, a simple parameter optimized filter can provide results almost as good as that of a filter. It is also...

  11. Integration of angular rate sensors for line of sight stabilization systems

    E-Print Network [OSTI]

    Loe, Gregory Ross

    1997-01-01T23:59:59.000Z

    of integrating signals is provided. A comparison of the different methods applied to a particular system is also provided. It is shown that, in some cases, a simple parameter optimized filter can provide results almost as good as that of a filter. It is also...

  12. Reduction of neutrino - nucleon scattering rate by nucleon - nucleon collisions

    E-Print Network [OSTI]

    Shoichi Yamada

    1999-07-05T23:59:59.000Z

    We studied possible modifications of the neutrino - nucleon scattering rate due to the nucleon - nucleon collisions in the hot dense matter which we find in the supernova core. We show that the finite width of the nucleon spectral function induced by the nucleon collisions leads to broadening of the dynamical spin structure function of the nucleon, resulting in the reduction of the rate of neutrino - nucleon scattering via the axial vector current and making the energy exchange between neutrinos and nucleons easier. The reduction rate is relatively large (about 0.6) even at density of about 10^{13}g/cm^{3} and could have a significant impact on the dynamics of the collapse-driven supernova as well as the cooling of the proto neutron star.

  13. A Roundtable Overview Driving the Top Line

    E-Print Network [OSTI]

    A Roundtable Overview Driving the Top Line #12;© 2012 Glassmeyer/McNamee Center for Digital of the Center for Digital Strategies. Driving the Top Line A Thought Leadership Roundtable on Digital, Switzerland for a discussion on how information technology can help companies drive top-line revenue. In many

  14. OnLine Debugging and Performance Monitoring with Barriers Ernesto Novillo Paul Lu

    E-Print Network [OSTI]

    Lu, Paul

    a program is running into errors and dynam­ ically be informed about potential performance problems (i.e., on­line). It is desirable to avoid the extra step of start­ ing up a debugger, starting a trace

  15. Cache directory lookup reader set encoding for partial cache line speculation support

    DOE Patents [OSTI]

    Gara, Alan; Ohmacht, Martin

    2014-10-21T23:59:59.000Z

    In a multiprocessor system, with conflict checking implemented in a directory lookup of a shared cache memory, a reader set encoding permits dynamic recordation of read accesses. The reader set encoding includes an indication of a portion of a line read, for instance by indicating boundaries of read accesses. Different encodings may apply to different types of speculative execution.

  16. On line chemical composition of analyzer development. Status report, February 1, 1992--April 30, 1992

    SciTech Connect (OSTI)

    Not Available

    1992-07-01T23:59:59.000Z

    This status report details progress made on the development of an on-line chemical analyzer. Dynamic studies of the distillation column, approval of testing plans, installation of a sample cell and raman analyzer, design of computerized control systems are described. Information on seminars and published papers is also included. (GHH)

  17. New protection method for HVDC lines including cables

    SciTech Connect (OSTI)

    Takeda, H.; Ayakawa, H.; Tsumenaga, N.; Sanpei, M.

    1995-10-01T23:59:59.000Z

    For the third project of the Hokkaido-Honshu HVDC Link in Japan, called the HVDC Link III project (rated at 250 kVdc-1,200 A-300 MW), the authors developed an HVDC transmission line protection method based on a new working principle that allows high-speed and highly sensitive detection of faults, enhancing reliability in the supply of electric power. In general, increasing the sensitivity of relays will lead to an increased likelihood of undesired operation whereas lowering the sensitivity will impair the responsiveness of the relays. The proposed method meets these apparently incompatible requirements very well. Basically classified as a differential scheme, the HVDC transmission line protection method compensates for a charging and discharging current that flows through the line-to-ground capacitance at times of voltage variations caused by a line fault or by the operation of dc power systems. The developed protection method is also characterized in that it uses current changes induced by voltage variations to restrain the operation of a relay. This configuration has made the proposed method far superior in responsiveness and sensitivity to the conventional protection method. A simulation using an EMTP (Electro-Magnetic Transients Program) was conducted on this method. Developed relay equipment embodying the new protection method was subjected to various verification tests, where this equipment was connected to a power system simulator, before being delivered to the HVDC Link III facility.

  18. Structure and Dynamics of the Surface in a Pile of Rice A. Malthe-Srenssen1

    E-Print Network [OSTI]

    Christensen, Kim

    Structure and Dynamics of the Surface in a Pile of Rice A. Malthe-Sørenssen1 , J. Feder1 , K, 2001) We analyze the surface geometry and dynamics in a slowly driven, quasi one-dimensional pile of rice. The pile dynamics is characterized by a sequence of contour lines (profiles). Only a narrow zone

  19. Stopping and time reversing a light pulse using dynamic loss tuning of coupled-resonator

    E-Print Network [OSTI]

    Fan, Shanhui

    Stopping and time reversing a light pulse using dynamic loss tuning of coupled-resonator delay. ID 85496); published November 12, 2007 We introduce a light-stopping process that uses dynamic loss processing [1,2]. For this pur- pose, dynamically tuned delay lines based on cas- caded optical resonators

  20. On the Location of the Snow Line in a Protoplanetary Disk

    E-Print Network [OSTI]

    M. Lecar; M. Podolak; D. Sasselov; E. Chiang

    2006-02-09T23:59:59.000Z

    In a protoplanetary disk, the inner edge of the region where the temperature falls below the condensation temperature of water is referred to as the 'snow line'. Outside the snow line, water ice increases the surface density of solids by a factor of 4. The mass of the fastest growing planetesimal (the 'isolation mass') scales as the surface density to the 3/2 power. It is thought that ice-enhanced surface densities are required to make the cores of the gas giants (Jupiter and Saturn) before the disk gas dissipates. Observations of the Solar System's asteroid belt suggest that the snow line occurred near 2.7 AU. In this paper we revisit the theoretical determination of the snow line. In a minimum-mass disk characterized by conventional opacities and a mass accretion rate of 10^-8 solar masses per year, the snow line lies at 1.6-1.8 AU, just past the orbit of Mars. The minimum-mass disk, with a mass of 0.02 solar, has a life time of 2 million years with the assumed accretion rate. Moving the snow line past 2.7 AU requires that we increase the disk opacity, accretion rate, and/or disk mass by factors ranging up to an order of magnitude above our assumed baseline values.

  1. Reaction Rate Sensitivity of the gamma-Process Path

    E-Print Network [OSTI]

    T. Rauscher

    2004-07-16T23:59:59.000Z

    The location of the (gamma,p)/(gamma,n) and (gamma,alpha)/(gamma,n) line at gamma-process temperatures is discussed, using recently published reaction rates based on global Hauser-Feshbach calculations. The results can directly be compared to previously published, classic gamma-process discussions. The nuclei exhibiting the largest sensitivity to uncertainties in nuclear structure and reaction parameters are specified.

  2. Topics in Quantum Dynamics

    E-Print Network [OSTI]

    A. Jadczyk

    1994-06-30T23:59:59.000Z

    The paper consists of two parts. In the first part Schroedinger's equation for a charged quantum particle in a Galilei-Newton curved space-time is derived in a fully geometrical way. Gravitational and electromagnetic fields are coded into space metric and space-time connection. The fundamental geometrical object is a quantum connection in a Hermitian line bundle over the 7-dimensional jet space of 3-velocities. The secondary object is the bundle of Hilbert spaces over absolute time. Time appears as a superselection quantity while Shroedinger equation is interpreted as parallel transport in this bundle. In the second part the problem of measurement in quantum theory is discussed as a part of a more general problem of coupling between quantum and classical systems. The standard framework of quantum theory is extended so as to allow for dynamical central observables within dissipative dynamics. It is shown that within this approach one obtains not only Liouville equation that describes statistical ensembles, but also a piecewise-deterministic random process describing sequences of "events" that can be monitored by a continuous observation of the single, coupled classical system. It also describes "quantum jumps" or "wave packet reductions" that accompany these events. Two example are worked out in some details. The last one deals with the problem oof "how to determine the wave function ?".

  3. Assessment of Baroreflex Control of Heart Rate During General Anesthesia Point Process Method

    E-Print Network [OSTI]

    Pierce, Eric T.

    Evaluation of baroreflex control of heart rate (HR) has important implications in clinical practice of anesthesia and postoperative care. In this paper, we present a point process method to assess the dynamic baroreflex ...

  4. Accelerated dynamics simulations of nanotubes.

    SciTech Connect (OSTI)

    Uberuaga, B. P. (Blas Pedro); Stuart, S. J. (Steve J.); Voter, A. F.

    2002-01-01T23:59:59.000Z

    We report on the application of accelerated dynamics techniques to the study of carbon nanotubes. We have used the parallel replica method and temperature accelerated dynamics simulations are currently in progress. In the parallel replica study, we have stretched tubes at a rate significantly lower than that used in previous studies. In these preliminary results, we find that there are qualitative differences in the rupture of the nanotubes at different temperatures. We plan on extending this investigation to include nanotubes of various chiralities. We also plan on exploring unique geometries of nanotubes.

  5. Searching for radiative pumping lines of OH masers: II. The 53.3um absorption line towards 1612MHz OH maser sources

    E-Print Network [OSTI]

    J. H. He; P. S. Chen

    2004-06-29T23:59:59.000Z

    This paper analyzes the 53.3um line in the ISO LWS spectra towards a similar sample of OH/IR sources. We find 137 LWS spectra covering 53.3um and associated with 47 galactic OH/IR sources. Ten of these galactic OH/IR sources are found to show and another 5 ones tentatively show the 53.3um absorption while another 7 sources highly probably do not show this line. The source class is found to be correlated with the type of spectral profile: red supergiants (RSGs) and AGB stars tend to show strong blue-shifted filling emission in their 53.3um absorption line profiles while HII regions tend to show a weak red-shifted filling emission in the line profile. GC sources and megamasers do not show filling emission feature. It is argued that the filling emission might be the manifestation of an unresolved half emission half absorption profile of the 53.3um doublet. The 53.3 to 34.6um equivalent width (EW) ratio is close to unity for RSGs but much larger than unity for GC sources and megamasers while H II regions only show the 53.3um line. The pump rate defined as maser to IR photon flux ratio is approximately 5% for RSGs. The pump rates of GC sources are three order of magnitude smaller. Both the large 53.3 to 34.6um EW ratio and the small pump rate of the GC OH masers reflect that the two detected `pumping lines' in these sources are actually of interstellar origin. The pump rate of Arp 220 is 32%--much larger than that of RSGs, which indicates that the contribution of other pumping mechanisms to this megamaser is important.

  6. Unsplit bipolar pulse forming line

    DOE Patents [OSTI]

    Rhodes, Mark A. (Pleasanton, CA)

    2011-05-24T23:59:59.000Z

    A bipolar pulse forming transmission line module and system for linear induction accelerators having first, second, third, and fourth planar conductors which form a sequentially arranged interleaved stack having opposing first and second ends, with dielectric layers between the conductors. The first and second planar conductors are connected to each other at the first end, and the first and fourth planar conductors are connected to each other at the second end via a shorting plate. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short at the first end a high voltage from the third planar conductor to the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.

  7. Magnetically insulated transmission line oscillator

    DOE Patents [OSTI]

    Bacon, Larry D. (Albuquerque, NM); Ballard, William P. (Albuquerque, NM); Clark, M. Collins (Albuquerque, NM); Marder, Barry M. (Albuquerque, NM)

    1988-01-01T23:59:59.000Z

    A magnetically insulated transmission line oscillator employs self-generated magnetic fields to generate microwave energy. An anode of the oscillator includes slow-wave structures which are formed of a plurality of thin conductive vanes defining cavities therebetween, and a gap is formed between the anode and a cathode of the oscillator. In response to a pulsed voltage applied to the anode and cathode, self-generated magnetic fields arfe produced in a cross-field orientation with respect to the orientation of the electric field between the anode and the cathode. The cross-field magnetic fields insulate the flow of electrons in the gap and confine the flow of electrons within the gap.

  8. Gamma-Ray Burst Lines

    E-Print Network [OSTI]

    Michael S. Briggs

    1999-10-20T23:59:59.000Z

    The evidence for spectral features in gamma-ray bursts is summarized. As a guide for evaluating the evidence, the properties of gamma-ray detectors and the methods of analyzing gamma-ray spectra are reviewed. In the 1980's, observations indicated that absorption features below 100 keV were present in a large fraction of bright gamma-ray bursts. There were also reports of emission features around 400 keV. During the 1990's the situation has become much less clear. A small fraction of bursts observed with BATSE have statistically significant low-energy features, but the reality of the features is suspect because in several cases the data of the BATSE detectors appear to be inconsistent. Furthermore, most of the possible features appear in emission rather than the expected absorption. Analysis of data from other instruments has either not been finalized or has not detected lines.

  9. Superconducting transmission line particle detector

    DOE Patents [OSTI]

    Gray, Kenneth E. (Naperville, IL)

    1989-01-01T23:59:59.000Z

    A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non-superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propogating in a superconducting transmission line are used to resolve N.sup.2 ambiguity of charged particle events.

  10. Superconducting transmission line particle detector

    DOE Patents [OSTI]

    Gray, K.E.

    1988-07-28T23:59:59.000Z

    A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non- superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propagating in a superconducting transmission line are used to resolve N/sup 2/ ambiguity of charged particle events. 6 figs.

  11. Rate Adjustments and Public Involvement

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CRSP Transmission 9162013 WAPA-161 FRN, CRSP transmission and ancillary services rates extension Letter announcing two-year extension to CRSP transmission and ancillary...

  12. Sustainable Building Rating Systems Summary

    SciTech Connect (OSTI)

    Fowler, Kimberly M.; Rauch, Emily M.

    2006-07-01T23:59:59.000Z

    The purpose of this document is to offer information that could be used to compare and contrast sustainable building rating systems.

  13. Introduction to Dynamic Distributed

    E-Print Network [OSTI]

    Roma "La Sapienza", Università di

    Introduction to Dynamic Distributed SystemsSystems #12;Outline Introduction Churn Building Applications in Dynamic Distributed Systems RegistersRegisters Eventual Leader election Connectivity in Dynamic Distributed Systems #12;Dynamic Distributed Systems: Context & Motivations Advent of Complex Distributed

  14. Scaling of classical rate constants on scaled potential-energy surfaces Myung Soo Kim,a)

    E-Print Network [OSTI]

    Kim, Myung Soo

    or dynamical calculation of a rate constant is to use data from electronic structure calculation. Structure at moderately high levels of electronic structure calculation. © 2001 American Institute of Physics. DOI: 10 state theories and the methods based on classical or quantal dynamics calculation.4­7 When

  15. Modal aerosol dynamics modeling

    SciTech Connect (OSTI)

    Whitby, E.R.; McMurry, P.H.; Shankar, U.; Binkowski, F.S.

    1991-02-01T23:59:59.000Z

    The report presents the governing equations for representing aerosol dynamics, based on several different representations of the aerosol size distribution. Analytical and numerical solution techniques for these governing equations are also reviewed. Described in detail is a computationally efficient numerical technique for simulating aerosol behavior in systems undergoing simultaneous heat transfer, fluid flow, and mass transfer in and between the gas and condensed phases. The technique belongs to a general class of models known as modal aerosol dynamics (MAD) models. These models solve for the temporal and spatial evolution of the particle size distribution function. Computational efficiency is achieved by representing the complete aerosol population as a sum of additive overlapping populations (modes), and solving for the time rate of change of integral moments of each mode. Applications of MAD models for simulating aerosol dynamics in continuous stirred tank aerosol reactors and flow aerosol reactors are provided. For the application to flow aerosol reactors, the discussion is developed in terms of considerations for merging a MAD model with the SIMPLER routine described by Patankar (1980). Considerations for incorporating a MAD model into the U.S. Environmental Protection Agency's Regional Particulate Model are also described. Numerical and analytical techniques for evaluating the size-space integrals of the modal dynamics equations (MDEs) are described. For multimodal logonormal distributions, an analytical expression for the coagulation integrals of the MDEs, applicable for all size regimes, is derived, and is within 20% of accurate numerical evaluation of the same moment coagulation integrals. A computationally efficient integration technique, based on Gauss-Hermite numerical integration, is also derived.

  16. Flavor Dynamics

    E-Print Network [OSTI]

    Michael Murray; for the BRAHMS Collaboration

    2007-10-24T23:59:59.000Z

    The purpose of BRAHMS is to survey the dynamics of relativistic heavy ion (as well as pp and d-A) collisions over a very wide range of rapidity and transverse momentum. The sum of these data may give us a glimpse of the initial state of the system, its transverse and longitudinal evolution and how the nature of the system changes with time. Here I will concentrate on the origin and dynamics of the light flavors, i.e. the creation and transport of the up, down and strange quarks. The results presented here are certainly not the end of the story. It is my hope that in a few years new detectors will reveal the rapidity dependence of the charm and bottom quarks.

  17. Reconnections of Vortex Loops in the Superfluid Turbulent HeII. Rates of the Breakdown and Fusion processes

    E-Print Network [OSTI]

    Sergey K. Nemirovskii

    2005-05-18T23:59:59.000Z

    Kinetics of merging and breaking down vortex loops is the important part of the whole vortex tangle dynamics. Another part is the motion of individual lines, which obeys the Biot-Savart law in presence of friction force and of applied external velocity fields if any. In the present work we evaluate the coefficients of the reconnection rates $A(l_{1},l_{2},l)$ and $B(l,l_{1},l_{2})$. Quantity $A$ is a number (per unit of time and per unit of volume) of events, when two loops with lengths $l_{1}$and $l_{2}$ collide and form the single loop of length $ l=l_{1}+l_{2}$. Quantity $% B(l,l_{1},l_{2}) $ describes the rate of events, when the single loop of the length $l$ breaks down into two the daughter loops of lengths $ l_{1}$ and $l_{2}$. These quantities ave evaluated as the averaged numbers of zeroes of vector $\\mathbf{S}%_{s}(\\xi_{2},\\xi_{1},t)$ connecting two points on the loops of $\\xi_{2}$ and $ \\xi_{1}$ at moment of time $t$. Statistics of the individual loops is taken from the Gaussian model of vortex tangle. PACS-number 67.40

  18. RECYCLING RATE STUDY Prepared by

    E-Print Network [OSTI]

    Laughlin, Robert B.

    NATIONAL RECYCLING RATE STUDY Prepared by: Smith, Bucklin and Associates, Inc. Market Research and Statistics Division Chicago, Illinois July 2003 PRINTED ON RECYCLED PAPER #12;BCI RECYCLING RATE STUDY TABLE ....................................................................................................1 II. METHODOLOGY A. Total Pounds of Lead Recycled from Batteries

  19. Advertising Rates from May 2012

    E-Print Network [OSTI]

    Peters, Richard

    and commitments in line with newspaper format changes. SMH and The Age editions of Drive are available only in NSW bookings taken inside cancellation deadline are taken on a non-cancellation basis. No liability note that Fairfax Media will only accept material via electronic transmission. Fairfax Media operates

  20. Innovative Rates Program. Final report

    SciTech Connect (OSTI)

    Not Available

    1982-06-21T23:59:59.000Z

    Title II of the Energy Conservation and Production Act (ECPA) as amended by the Public Utility Regulatory Policies Act (PURPA) provided financial assistance to state utility regulatory commissions, nonregulated electric utilities, and the Tennessee Valley Authority through the Innovative Rates Program. The financial assistance was to be used to plan or carry out electric utility regulatory rate reform initiatives relating to innovative rate structures that encourage conservation of energy, electric utility efficiency and reduced costs, and equitable rates to consumers. The Federal and local objectives of the project are described. Activities planned and accomplishments are summarized for the following: project management, data collection, utility bill evaluation, billing enclosure/mailing evaluation, media program evaluation, display evaluation, rate study sessions evaluation, speakers bureau evaluation, and individual customer contacts. A timetable/milestone chart and financial information are included. (MHR)

  1. WP-07 Power Rate Case (rates/ratecases)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulenceUtilizeRural PublicRates > Rate Cases > Rates

  2. PREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL AND HIGHLY DEVIATED WELLS

    E-Print Network [OSTI]

    Ullmer, Brygg

    PREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL parameters such as wellbore geometry, pump rate, drilling fluid rheology and density, and maximum drilling Computational Fluid Dynamics methods. Movement, concentration and accumulation of drilled cuttings in non

  3. Optical, UV, and X-ray Clues to the Nature of Narrow Line AGNs

    E-Print Network [OSTI]

    Ari Laor

    2000-05-08T23:59:59.000Z

    AGNs with narrow Balmer lines show various extreme properties. In particular, rapid X-ray variability, steep X-ray spectra, peculiar optical and UV line ratios, and possibly peculiar line profiles. Since all these phenomena occur together they are likely to be related to one specific underlying physical parameter. I review recent evidence, based on HST imaging of low z quasars, which suggests that the H-beta line width and continuum luminosity of quasars provide a reasonably accurate estimate of the black hole mass. This implies that narrow-line AGN have relatively low black hole masses, and thus high L/L_Edd, as independently suggested based on their steep X-ray spectra. I present additional evidence suggesting that the X-ray variability and the radio loudness are primarily driven by the black hole mass. The high mass inflow rate into the core of narrow-line AGNs may produce a denser and more enriched BLR, a high column radiation pressure driven outflow, and a smaller illumination angle for the NLR, as suggested by the observed emission line properties. Narrow-line AGNs may thus provide important clues for understanding the rich overall phenomenology of AGNs.

  4. Water Exchange Rates and Molecular Mechanism around Aqueous Halide Ions

    SciTech Connect (OSTI)

    Annapureddy, Harsha V.; Dang, Liem X.

    2014-07-17T23:59:59.000Z

    Molecular dynamics simulations were performed to systematically study the water-exchange mechanism around aqueous chloride, bromide, and iodide ions. Transition state theory, Grote-Hynes theory, and the reactive flux method were employed to compute water exchange rates. We computed the pressure dependence of rate constants and the corresponding activation volumes to investigate the mechanism of the solvent exchange event. The activation volumes obtained using the transition state theory rate constants are negative for all the three anions, thus indicating an associative mechanism. Contrary to the transition state theory results, activation volumes obtained using rate constants from Grote-Hynes theory and the reactive flux method are positive, thus indicating a dissociative mechanism. The Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences (BES), of the U.S. Department of Energy (DOE) funded this work. Battelle operates Pacific Northwest National Laboratory for DOE. The calculations were carried out using computer resources provided by BES.

  5. Wavelet Based Volatility Clustering Estimation of Foreign Exchange Rates

    E-Print Network [OSTI]

    A. N. Sekar Iyengar

    2009-10-01T23:59:59.000Z

    We have presented a novel technique of detecting intermittencies in a financial time series of the foreign exchange rate data of U.S.- Euro dollar(US/EUR) using a combination of both statistical and spectral techniques. This has been possible due to Continuous Wavelet Transform (CWT) analysis which has been popularly applied to fluctuating data in various fields science and engineering and is also being tried out in finance and economics. We have been able to qualitatively identify the presence of nonlinearity and chaos in the time series of the foreign exchange rates for US/EURO (United States dollar to Euro Dollar) and US/UK (United States dollar to United Kingdom Pound) currencies. Interestingly we find that for the US-INDIA(United States dollar to Indian Rupee) foreign exchange rates, no such chaotic dynamics is observed. This could be a result of the government control over the foreign exchange rates, instead of the market controlling them.

  6. NSLS-II Transport Line Progress

    SciTech Connect (OSTI)

    Fliller R. P.; Wahl, W.; Anderson, A.; Benish, B.; DeBoer, W.; Ganetis, G.; Heese, R.; Hseuh, H.-C.; Hu, J.-P.; Johanson, M.P.; Kosciuk, B.N.; Padrazo, D.; Roy, K.; Shaftan, T.; Singh, O.; Tuozzolo, J.; Wang, G.

    2012-05-20T23:59:59.000Z

    The National Synchrotron Light Source II (NSLS-II) is a state-of-the-art 3-GeV third generation light source currently under construction at Brookhaven National Laboratory. The NSLS-II injection system consists of a 200 MeV linac, a 3-GeV booster synchrotron and associated transfer lines. The first part of the Linac to Booster Transport (LBT) line has been installed for linac commissioning. This part includes all components necessary to commission the NSLS-II linac. The second part of this transport line is undergoing installation. Initial results of hardware commissioning will be discussed. The Booster to Storage Ring (BSR) transport line underwent a design review. The first part of the BSR transport line, consisting of all components necessary to commission the booster will be installed in 2012 for booster commissioning. We report on the final design of the BSR line along with the plan to commission the booster.

  7. Fissile solution dynamics: Student research

    SciTech Connect (OSTI)

    Hetrick, D.L.

    1994-09-01T23:59:59.000Z

    There are two research projects in criticality safety at the University of Arizona: one in dynamic simulation of hypothetical criticality accidents in fissile solutions, and one in criticality benchmarks using transport theory. We have used the data from nuclear excursions in KEWB, CRAC, and SILENE to help in building models for solution excursions. An equation of state for liquids containing gas bubbles has been developed and coupled to point-reactor dynamics in an attempt to predict fission rate, yield, pressure, and kinetic energy. It appears that radiolytic gas is unimportant until after the first peak, but that it does strongly affect the shape of the subsequent power decrease and also the dynamic pressure.

  8. Gamma-Ray Line Observations with RHESSI

    E-Print Network [OSTI]

    David M. Smith

    2004-04-30T23:59:59.000Z

    The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) has been observing gamma-ray lines from the Sun and the Galaxy since its launch in February 2002. Here I summarize the status of RHESSI observations of solar lines (nuclear de-excitation, neutron capture, and positron annihilation), the lines of $^{26}$Al and $^{60}$Fe from the inner Galaxy, and the search for positron annihilation in novae.

  9. DOE Sustainability Reporting Open Line Help Call

    Broader source: Energy.gov [DOE]

    The Sustainability Performance Office (SPO) sponsors open line help calls to assist DOE sites and national laboratories with the annual sustainability reporting process. Representatives from the...

  10. Rubber linings answer to many problems

    SciTech Connect (OSTI)

    Mehra, L. [Quality Linings Co., Aurora, CO (United States)

    1998-12-31T23:59:59.000Z

    The uses of rubber linings in different fields industries are discussed.The physical properties of rubber both natural and synthetic rubber are listed and their importance is evaluated. The aging of rubber is discussed in detail, including effects of temperature on aging of rubber. By virtue of its inherent elasticity and chemical resistance, rubber linings have found many uses in the protection of mining equipment, water treatment tanks and vessels, flue gas desulfurization equipment in power plants and varied process and storage vessels in chemical industries. Rubber has found extensive use in civil engineering field as expansion joints and bladders in dams. Electrical resistance of rubber is useful for its application as an insulating material. Rubber is chemically resistant to acids, alkalies and many salt solutions. Rubber linings are therefore used for protection of steel against these acids, alkalies or salt solutions. The extreme elasticity of rubber has been found useful in its application as a lining material in areas subject to high abrasion. Frequently rubber linings are the linings of choice when a combination of abrasion and chemical attack are to be protected against. Constantly, new formulations of rubber lining compounds are being developed just as new chemical processes are being made. The flexibility of compounding and the relative ease of putting layers of different rubber formulations together in multilayered formulations of rubber lining compounds is leading to new uses of this lining material.

  11. Transmission Line Security Monitor: Final Report

    SciTech Connect (OSTI)

    John Svoboda

    2011-04-01T23:59:59.000Z

    The Electric Power Transmission Line Security Monitor System Operational Test is a project funded by the Technical Support Working Group (TSWG). TSWG operates under the Combating Terrorism Technical Support Office that functions under the Department of Defense. The Transmission Line Security Monitor System is based on technology developed by Idaho National Laboratory. The technology provides a means for real-time monitoring of physical threats and/or damage to electrical transmission line towers and conductors as well as providing operational parameters to transmission line operators to optimize transmission line operation. The end use is for monitoring long stretches of transmission lines that deliver electrical power from remote generating stations to cities and industry. These transmission lines are generally located in remote transmission line corridors where security infrastructure may not exist. Security and operational sensors in the sensor platform on the conductors take power from the transmission line and relay security and operational information to operations personnel hundreds of miles away without relying on existing infrastructure. Initiated on May 25, 2007, this project resulted in pre-production units tested in realistic operational environments during 2010. A technology licensee, Lindsey Manufacturing of Azusa California, is assisting in design, testing, and ultimately production. The platform was originally designed for a security monitoring mission, but it has been enhanced to include important operational features desired by electrical utilities.

  12. Emergency Management Lines of Inquiry, April 2008

    Broader source: Energy.gov (indexed) [DOE]

    Inspection Criteria, Activities, and Lines of Inquiry Functional Area: Hazards Survey (HS) and Emergency Planning Hazards Assessment (EPHA) Inspection Criteria: Emergency...

  13. Detonator comprising a nonlinear transmission line

    DOE Patents [OSTI]

    Elizondo-Decanini, Juan M

    2014-12-30T23:59:59.000Z

    Detonators are described herein. In a general embodiment, the detonator includes a nonlinear transmission line that has a variable capacitance. Capacitance of the nonlinear transmission line is a function of voltage on the nonlinear transmission line. The nonlinear transmission line receives a voltage pulse from a voltage source and compresses the voltage pulse to generate a trigger signal. Compressing the voltage pulse includes increasing amplitude of the voltage pulse and decreasing length of the voltage pulse in time. An igniter receives the trigger signal and detonates an explosive responsive to receipt of the trigger signal.

  14. Dynamics of evaporative colloidal patterning

    E-Print Network [OSTI]

    C. Nadir Kaplan; Ning Wu; Shreyas Mandre; Joanna Aizenberg; L. Mahadevan

    2014-12-04T23:59:59.000Z

    Drying suspensions often leave behind complex patterns of particulates, as might be seen in the coffee stains on a table. Here we consider the dynamics of periodic band or uniform solid film formation on a vertical plate suspended partially in a drying colloidal solution. Direct observations allow us to visualize the dynamics of the band and film deposition, and the transition in between when the colloidal concentration is varied. A minimal theory of the liquid meniscus motion along the plate reveals the dynamics of the banding and its transition to the filming as a function of the ratio of deposition and evaporation rates. We also provide a complementary multiphase model of colloids dissolved in the liquid, which couples the inhomogeneous evaporation at the evolving meniscus to the fluid and particulate flows and the transition from a dilute suspension to a porous plug. This allows us to determine the concentration dependence of the bandwidth and the deposition rate. Together, our findings allow for the control of drying-induced patterning as a function of the colloidal concentration and evaporation rate.

  15. Supernova rates and stellar populations

    E-Print Network [OSTI]

    F. Mannucci

    2007-08-03T23:59:59.000Z

    We discuss the results about the nature of type Ia Supernovae that can be derived by studying their rates in different stellar populations. While the evolution of SN photometry and spectra can constrain the explosion mechanism, the SN rate depends on the progenitor system. We review the current available data on rates as a function of parent galaxy color, morphology, star formation rate, radio luminosity and environment. By studying the variation of the rates with the color of the parent galaxy, a strong evidence was established that type Ia SNe come from both young and old stars. The dependence of the rates with the radio power of the parent galaxy is best reproduced by a bimodal distribution of delay time between the formation of the progenitor and its explosion as a SN. Cluster early-type galaxies show higher type Ia SN rate with respect to field galaxies, and this effect can be due either to traces of young stars or to differences in the delay time distribution.

  16. Feedback control of the rate of peat formation Lisa R. Belyea1*

    E-Print Network [OSTI]

    or net sinks at present. Second, long-term rates of peat accumulation (and hence carbon sequestration and carbon sequestration. Keywords: peatlands; soil organic matter; ecosystem dynamics; carbon cycle 1). As a result of these discrepancies, estimates of the rates of carbon sequestration and emission derived from

  17. The dynamic response of heated glass

    E-Print Network [OSTI]

    Sewall, Roy Edward

    1972-01-01T23:59:59.000Z

    rates of strain. This research was prompted, in part, by NASA studies on ductile-type craters in glassy lunar rocks. The dynamic response of Apollo spacecraft windows, made of fused silica, also led to this research. The investigation consists... Response of Heated Glass. (December 1972) Roy Edward Sewall, B. S. , Texas AS? University Directed by: Dr. James L. Rand The purpose of this research is to investigate the dynamic behavior of fused silica glass subjected to high temperatures and high...

  18. FLASH predictions of the MB-2 steam line break tests

    SciTech Connect (OSTI)

    Lincoln, F.W.; Coffield, R.D.; Johnson, E.G.

    1992-12-31T23:59:59.000Z

    If a main steam line from a pressurized water reactor (PWR) steam generator were to rupture, the effect would be a depressurization of the secondary side and a consequential overcooling transient on the primary side. Analyses must accurately predict the effects of the rapid cooldown of the reactor vessel coolant on positive nuclear-kinetic reactivity feedback to the core plus thermal shock to the reactor vessel and other primary system components. Many early studies of the steam line break (SLB) transient made extremely conservative assumptions to maximize the primary to secondary heat transfer which in turn maximized the reactor vessel cooldown rate. Among the more significant of these assumptions was that flow from the break was pure steam and that the tube bundle remained covered until the secondary mass inventory was significantly reduced. The Model F commercial PWR steam generator testing performed in the Model Boiler No. 2 (MB-2) facility located at the Westinghouse Engineering Test Facility in Tampa, Florida provided data to better qualify the actual variation in these key parameters. A conclusion of this analysis is that the MB-2 steam line break data base is accurate and of sufficient detail to provide a valuable basis for making comparisons relative to code predictions. Results obtained using the FLASH transient safety analysis code were found to be in excellent agreement with the data.

  19. Asset Prices and Exchange Rates

    E-Print Network [OSTI]

    Pavlova, Anna

    2003-08-01T23:59:59.000Z

    This paper develops a simple two-country, two-good model, in which the real exchange rate, stock and bond prices are jointly determined. The model predicts that ...

  20. Asset Prices and Exchange Rates

    E-Print Network [OSTI]

    Pavlova, Anna

    2004-11-30T23:59:59.000Z

    This paper develops a simple two-country, two-good model, in which the real exchange rate, stock and bond prices are jointly determined. The model predicts that stock market prices are correlated ...

  1. Tier 2 Vintage Rate Workshop

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    period FY2015 through 2028. Customers have a diversification right to limit the amount of power they purchase at the Load Growth rate in future years with notice provided by...

  2. High repetition rate fiber lasers

    E-Print Network [OSTI]

    Chen, Jian, Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    This thesis reports work in high repetition rate femtosecond fiber lasers. Driven by the applications including optical arbitrary waveform generation, high speed optical sampling, frequency metrology, and timing and frequency ...

  3. Integrating high-precision U-Pb geochronologic data with dynamic models of earth processes

    E-Print Network [OSTI]

    Blackburn, Terrence (Terrence Joseph)

    2012-01-01T23:59:59.000Z

    Radioisotopic dating can provide critical constraints for understanding the rates of tectonic, dynamic and biologic processes operating on our planet. Improving the interpretation and implementation of geochronologic data ...

  4. Electric Rate Alternatives to Cogeneration

    E-Print Network [OSTI]

    Sandberg, K. R. Jr.

    "ELECTRIC RATE ALTERNATIVES TO COGENERATION" K. R. SANDBERG, JR. INDUSTRIAL ACCOUNTS MANAGER - TEXAS GULF STATES UTILITIES COMPANY BEAUMONT, TEXAS ABSTRACT This paper discusses electric rate slternatives to cogeneration for the industrisl... PERSPECTIVE Gulf States Utilities was incorporated in 1925 and is primarily in the business of generating. transmitting and distributing electricity to 555.000 customers in southeast Texas and south Louisiana. The service area extends 350 miles westward...

  5. Electrically modulated dynamic spreading of drops on soft surfaces

    E-Print Network [OSTI]

    Ranabir Dey; Ashish Daga; Sunando DasGupta; Suman Chakraborty

    2015-04-07T23:59:59.000Z

    The intricate interaction between the deformability of a substrate and the dynamic spreading of a liquid drop on the same, under the application of an electrical voltage, has remained far from being well understood. Here, we demonstrate that electrospreading dynamics on soft substrates is dictated by the combined interplay of electrocapillarity, the wetting line friction and the viscoelastic energy dissipation at the contact line. Our results reveal that during such electro-elastocapillarity mediated spreading of a sessile drop, the contact radius evolution exhibits a universal power law in a substrate elasticity based non-dimensional time, with an electric potential dependent spreading exponent. Simultaneously, the macroscopic dynamic contact angle variation follows a general power law in the contact line velocity, normalized by elasticity dependent characteristic velocity scale. Our results are likely to provide the foundation for the development of a plethora of new applications involving droplet manipulations by exploiting the interplay between electrically triggered spreading and substrate-compliance over interfacial scales.

  6. Infinite Sequence of Poincare Group Extensions: Structure and Dynamics

    E-Print Network [OSTI]

    Sotirios Bonanos; Joaquim Gomis

    2009-11-06T23:59:59.000Z

    We study the structure and dynamics of the infinite sequence of extensions of the Poincar{\\'e} algebra whose method of construction was described in a previous paper [1]. We give explicitly the Maurer-Cartan (MC) 1-forms of the extended Lie algebras up to level three. Using these forms and introducing a corresponding set of new dynamical couplings, we construct an invariant Lagrangian, which describes the dynamics of a distribution of charged particles in an external electromagnetic field. At each extension, the distribution is approximated by a set of moments about the world line of its center of mass and the field by its Taylor series expansion about the same line. The equations of motion after the second extensions contain back-reaction terms of the moments on the world line.

  7. The rate of isothermal hydration of polyperfluorosulfonic acid membranes

    E-Print Network [OSTI]

    Van Nguyen, Trung; Vanderborgh, N.

    1998-05-27T23:59:59.000Z

    The Rate of Isothermal Hydration of Polyperfluorosulfonic Acid Membranes by Trung Van Nguyen * Department of Chemical and Petroleum Engineering 4006 Learned Hall The University of Kansas Lawrence, Kansas 66045-2223 and Nicholas... conditions for the three phases of a typical polymer hydration dynamic experiment. Measurements were made using a TA3000 Mettler thermal analysis system. Nitrogen was used as the carrier gas along with controlled quantities of water vapor that were...

  8. An off-line interface for HPLC and orthogonal MALDI TOF

    E-Print Network [OSTI]

    Ens, Werner

    -Hz nitrogen laser (Laser Science) with 300 µJ energy per pulse, or a high repetition-rate (up to 1 k An off-line approach to coupling HPLC with mass spectrometry has several advantages in principle over on;3 Experimental - mass spectrometry Manitoba MALDI QqTOF spectrometer Mass spectrometry was performed

  9. Ovulatory cycle effects on womens responses to sexually loaded chat-up lines

    E-Print Network [OSTI]

    Baty, Z L

    2008-06-27T23:59:59.000Z

    ; Gangestad et al., 2004; Haselton & Miller, 2006; Havlicek et al., 2005). The present study attempts to discover if the same ovulatory effects will be found for preference of sexually loaded chat-up lines. Participants were required to rate one set...

  10. BIODIVERSITY Accounting for tree line shift, glacier

    E-Print Network [OSTI]

    Zimmermann, Niklaus E.

    BIODIVERSITY RESEARCH Accounting for tree line shift, glacier retreat and primary succession land cover (tree line shift, glacier retreat and primary succession) into species distribution model. Methods We fit linear mixed effects (LME) models to historical changes in forest and glacier cover

  11. LA NACION LINE Ciencia/Salud

    E-Print Network [OSTI]

    Wilf, Peter

    LA NACION LINE Ciencia/Salud Viernes 4 de Abril de 2003 LA NACION LINE | Ed. Anteriores | 4 de Abril de 2003 | Ciencia/Salud | Nota Estudio del Museo Egidio Feruglio, de Trelew La diversidad vegetal://www.lanacion.com.ar/03/04/04/sl_486019.asp LA NACION | 04/04/2003 | Página 14 | Ciencia/Salud Volver a ediciones

  12. Speed-line for 3D animation 

    E-Print Network [OSTI]

    Song, Won Chan

    2007-04-25T23:59:59.000Z

    My thesis describes a tool which creates speed-lines automatically in 3D computer animations. Speed-lines are usually used in comic books to express fast motions in a still image. They are also used in 2D animations. ...

  13. results and benefits... The Bittern Line Carbon

    E-Print Network [OSTI]

    Everest, Graham R

    results and benefits... The Bittern Line Carbon Neutral Stations Transport Regeneration Ltd. June 2008 c a s e s t u d yCRed carbon reduction Project Summary Our client, Transport Regeneration Ltd., aims to make nine stations on the Bittern Line between Norwich and Sheringham carbon neutral

  14. The Linux Command Line Second Internet Edition

    E-Print Network [OSTI]

    Dahl, David B.

    The Linux Command Line Second Internet Edition William E. Shotts, Jr. A LinuxCommand.org Book #12....................................................................................................xvi Why Use The Command Line to their respective owners. This book is part of the LinuxCommand.org project, a site for Linux education and advo

  15. On-line secret sharing Laszlo Csirmaz

    E-Print Network [OSTI]

    Tardos, Gábor

    On-line secret sharing L´aszl´o Csirmaz G´abor Tardos Abstract In a perfect secret sharing scheme the dealer distributes shares to participants so that qualified subsets can recover the secret, while unqualified subsets have no information on the secret. In an on-line secret sharing scheme the dealer assigns

  16. Optical on line techniques for nuclear applications

    SciTech Connect (OSTI)

    Doizi, D. [CEA, Nuclear Energy Div. DEN, DANS/DPC/SECR/LSRM (France); Pailloux, A.; Maury, C.; Sirven, J. B.; Dauvois, V.; Roujou, J. L.; Rosset, C. D. [CEA, Nuclear Energy Div. DEN, DANS/DPC (France); Hartmann, J. M. [CNRS., UMR 7583, LISA, Creteil (France)

    2011-07-01T23:59:59.000Z

    Optical on line techniques enable non intrusive physical measurements in harsh environments (high temperature, high pressure, radioactivity, ...). Optical absorption spectrometries such as UV-Visible, FTIR, CRDS have been successfully used to study gas phase speciation in different nuclear applications. LIBS which relies on laser matter interactions is a on line optical technique for solids and liquids elementary analysis. (authors)

  17. Conceptual design report for the UNI-CAT beam line proposal

    SciTech Connect (OSTI)

    Budai, J.D.; Ice, G.E.; Sparks, C.J.; Zschack, P. (Oak Ridge National Lab., TN (United States)); Chen, H.; Chiang, T.C.; Nelson, M.C.; Salamon, M.B.; Simmons, R.O. (Illinois Univ., Urbana, IL (United States)); Robota, H. (Allied-Signal, Inc., Des Plaines, IL (United States))

    1992-08-01T23:59:59.000Z

    The overall thrusts of UNI-CAT (University-National Laboratory- Industry Collaborative Access Team) are research at the cutting edge of physics, chemistry, biology, materials science, chemical engineering, polymer science, and geology; and education of a new generation of scientists in the use of synchrotron radiation to probe the structure, chemistry, and dynamic behavior of materials. The UNI-CAT proposal is to develop an APS sector that includes a bending magnet beam line and an insertion device beam line. The APS type-A undulator is the preferred choice for the insertion device. 8 figs, 6 refs. (DLC)

  18. Design of the ILC RTML extraction lines

    SciTech Connect (OSTI)

    Seletskiy, S.; Tenenbaum, P.; Walz, D.; /SLAC; Solyak, N.; /Fermilab

    2008-06-01T23:59:59.000Z

    The ILC [1] Damping Ring to the Main Linac beamline (RTML) contains three extraction lines (EL). Each EL can be used both for an emergency abort dumping of the beam and tune-up continual train-by-train extraction. Two of the extraction lines are located downstream of the first and second stages of the RTML bunch compressor, and must accept both compressed and uncompressed beam with energy spreads of 2.5% and 0.15%, respectively. In this paper we report on an optics design that allowed minimizing the length of the extraction lines while offsetting the beam dumps from the main line by the distance required for acceptable radiation levels in the service tunnel. The proposed extraction lines can accommodate beams with different energy spreads while at the same time providing the beam size acceptable for the aluminum dump window.

  19. Product Lines that supply other Product Lines: A Service-Oriented Approach Salvador Trujillo

    E-Print Network [OSTI]

    Apel, Sven

    Product Lines that supply other Product Lines: A Service-Oriented Approach Salvador Trujillo@uni-passau.de Abstract A software product line is a family of software products that share a set of core assets with the goal of reuse. In this paper, we focus on a scenario in which different products from different product

  20. Calculating Routes A Long a Line Assumes that lines exist as a shapefile

    E-Print Network [OSTI]

    Brownstone, Rob

    Calculating Routes A Long a Line Assumes that lines exist as a shapefile Step 1 ­ Create a Route from the Line Shapefile Go to ArcToolBox ­ Linear Referencing Tools ­ Create Route. Fill in Fields;Step 4 ­ Convert to Shapefile Make the event file permanent. Right click on the event table

  1. Hyperbolic Dynamics Todd Fisher

    E-Print Network [OSTI]

    Fisher, Todd

    Hyperbolic Dynamics Todd Fisher tfisher@math.umd.edu Department of Mathematics University of Maryland, College Park Hyperbolic Dynamics ­ p. 1/3 #12;What is a dynamical system? Phase space X, elements possible states Hyperbolic Dynamics ­ p. 2/3 #12;What is a dynamical system? Phase space X, elements

  2. Recyclable transmission line concept for z-pinch driven inertial fusion energy.

    SciTech Connect (OSTI)

    De Groot, J. S. (University of California, Davis, CA); Olson, Craig Lee; Cochrane, Kyle Robert (Ktech Corporation, Albuquerque, NM); Slutz, Stephen A.; Vesey, Roger Alan; Peterson, Per F. (University of California, Berkeley, CA)

    2003-12-01T23:59:59.000Z

    Recyclable transmission lines (RTL)s are being studied as a means to repetitively drive z pinches to generate fusion energy. We have shown previously that the RTL mass can be quite modest. Minimizing the RTL mass reduces recycling costs and the impulse delivered to the first wall of a fusion chamber. Despite this reduction in mass, a few seconds will be needed to reload an RTL after each subsequent shot. This is in comparison to other inertial fusion approaches that expect to fire up to ten capsules per second. Thus a larger fusion yield is needed to compensate for the slower repetition rate in a z-pinch driven fusion reactor. We present preliminary designs of z-pinch driven fusion capsules that provide an adequate yield of 1-4 GJ. We also present numerical simulations of the effect of these fairly large fusion yields on the RTL and the first wall of the reactor chamber. These simulations were performed with and without a neutron absorbing blanket surrounding the fusion explosion. We find that the RTL will be fully vaporized out to a radius of about 3 meters assuming normal incidence. However, at large enough radius the RTL will remain in either the liquid or solid state and this portion of the RTL could fragment and become shrapnel. We show that a dynamic fragmentation theory can be used to estimate the size of these fragmented particles. We discuss how proper design of the RTL can allow this shrapnel to be directed away from the sensitive mechanical parts of the reactor chamber.

  3. Line-driven disk wind models with an improved line force

    E-Print Network [OSTI]

    D. Proga; J. M. Stone; J. E. Drew

    1999-07-13T23:59:59.000Z

    We describe an efficient method of calculating the radiation pressure due to spectral lines, including all the terms in the velocity gradient tensor. We apply this method to calculate the two-dimensional, time-dependent structure of winds from luminous disks. Qualitative features of our new models are very similar to those we calculated including only the dominant terms in the tensor (Proga, Stone & Drew 1998, hereafter PSD). In particular, we find that models which displayed unsteady behaviour in PSD are also unsteady with the new method, and gross properties of the winds, such as mass-loss rate and characteristic velocity are not changed by the more accurate approach. The largest change caused by the new method is in the disk-wind opening angle: winds driven only by the disk radiation are more polar with the new method while winds driven by the disk and central object radiation are typically more equatorial. In the closing discussion, we provide further insight into the way the geometry of the radiation field and consequent flow determines the time properties of the flow.

  4. Predictable Internal Brain Dynamics in EEG and Its Relation to Conscious States

    E-Print Network [OSTI]

    Yoo, Jaewook; Kwon, Jaewook; Choe, Yoonsuck

    2014-06-03T23:59:59.000Z

    strategy to investigate objective necessary conditions of consciousness. Our basic hypothesis was that predictive internal dynamics serves as such a condition. This is in line with theories of consciousness that treat retention (memory), protention...

  5. Vortex in a relativistic perfect isentropic fluid and Nambu Goto dynamics

    E-Print Network [OSTI]

    B. Boisseau

    1999-11-26T23:59:59.000Z

    By a weak deformation of the cylindrical symmetry of the potential vortex in a relativistic perfect isentropic fluid, we study the possible dynamics of the central line of this vortex. In "stiff" material the Nanbu-Goto equations are obtained

  6. BEAM DYNAMICS FOR A PHOTOINJECTED ENERGY RECOVERY LINAC AT THE...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    at a rep rate of 0.43-1.3 GHz. We provide a first pass assessment of some of the beam dynamics issues that are critical to preserving the high brightness beams. 1 INTRODUCTION As...

  7. The dynamics of commodity spot and futures markets

    E-Print Network [OSTI]

    Pindyck, Robert S.

    2001-01-01T23:59:59.000Z

    I discuss the short-run dynamics of commodity prices, production, and inventories, as well as the sources and effects of market volatility. I explain how prices, rates of production, and inventory levels are interrelated, ...

  8. Osmotic stress affects functional properties of human melanoma cell lines

    E-Print Network [OSTI]

    La Porta, Caterina A M; Pasini, Maria; Laurson, Lasse; Alava, Mikko J; Zapperi, Stefano; Amar, Martine Ben

    2015-01-01T23:59:59.000Z

    Understanding the role of microenvironment in cancer growth and metastasis is a key issue for cancer research. Here, we study the effect of osmotic pressure on the functional properties of primary and metastatic melanoma cell lines. In particular, we experimentally quantify individual cell motility and transmigration capability. We then perform a circular scratch assay to study how a cancer cell front invades an empty space. Our results show that primary melanoma cells are sensitive to a low osmotic pressure, while metastatic cells are less. To better understand the experimental results, we introduce and study a continuous model for the dynamics of a cell layer and a stochastic discrete model for cell proliferation and diffusion. The two models capture essential features of the experimental results and allow to make predictions for a wide range of experimentally measurable parameters.

  9. The Microscopic Linear Dynamics

    E-Print Network [OSTI]

    Penny, Will

    The Microscopic Brain Will Penny Linear Dynamics Exponentials Matrix Exponential Eigendecomposition Dynamical Modes Nodes State Space Saddles Oscillations Spirals Centres Offsets Retinal Circuit Nullclines Stability Spiking Neurons Fitzhugh-Nagumo Nonlinear Dynamics Linearization Nonlinear Oscillation Excitable

  10. Direct estimation of decoherence rates

    E-Print Network [OSTI]

    Vladimír Bužek; Peter Rapcan; Jochen Rau; Mario Ziman

    2012-07-30T23:59:59.000Z

    The decoherence rate is a nonlinear channel parameter that describes quantitatively the decay of the off-diagonal elements of a density operator in the decoherence basis. We address the question of how to experimentally access such a nonlinear parameter directly without the need of complete process tomography. In particular, we design a simple experiment working with two copies of the channel, in which the registered mean value of a two-valued measurement directly determines the value of the average decoherence rate. No prior knowledge of the decoherence basis is required.

  11. Incentive Rates- At What Cost?

    E-Print Network [OSTI]

    Schaeffer, S. C.

    's impact. In fact, I doubt that one can truly know the exact impact of a rate even after its inclusion in a tariff, assuming of course, that someone uses it. My own judgment is that there are currently examples of both effective and not so effective... tem see a positive impact on their rates from any successes with this tariff, over the expected life of the new facility. We did not count societal benefits like high tax bases for local authorities when reviewing existing ratepayer benefit - only...

  12. Rate Schedules | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO Overview OCHCODepartmentEnergy April 20138Rate Schedules Rate Schedules

  13. Independent Signs of Lower Mass-Loss Rates for O-Type Stars

    E-Print Network [OSTI]

    Nathan Smith

    2007-10-18T23:59:59.000Z

    I discuss observational evidence -- independent of the direct spectral diagnostics of stellar winds themselves -- suggesting that mass-loss rates for O stars need to be revised downward by roughly a factor of three or more, in line with recent observed mass-loss rates for clumped winds. These independent constraints include the large observed mass-loss rates in LBV eruptions, the large masses of evolved massive stars like LBVs and WNH stars, WR stars in lower metallicity environments, observed rotation rates of massive stars at different metallicity, supernovae that seem to defy expectations of high mass-loss rates in stellar evolution, and other clues. I pay particular attention to the role of feedback that would result from higher mass-loss rates, driving the star to the Eddington limit too particular attention to the role of feedback that would result from higher mass-loss rates, driving the star to the Eddington limit too soon, and therefore making higher rates appear highly implausible. Some of these arguments by themselves may have more than one interpretation, but together they paint a consistent picture that steady line-driven winds of O-type stars have lower mass-loss rates and are significantly clumped.

  14. Protein Dynamics and Biocatalysis

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Protein Dynamics and Biocatalysis Protein Dynamics and Biocatalysis 1998 Annual Report Grand Challenge Projects biocatalysis.gif A model of the Michaelis complex for the TEM-1...

  15. Fast repetition rate (FRR) flasher

    DOE Patents [OSTI]

    Kolber, Z.; Falkowski, P.

    1997-02-11T23:59:59.000Z

    A fast repetition rate (FRR) flasher is described suitable for high flash photolysis including kinetic chemical and biological analysis. The flasher includes a power supply, a discharge capacitor operably connected to be charged by the power supply, and a flash lamp for producing a series of flashes in response to discharge of the discharge capacitor. A triggering circuit operably connected to the flash lamp initially ionizes the flash lamp. A current switch is operably connected between the flash lamp and the discharge capacitor. The current switch has at least one insulated gate bipolar transistor for switching current that is operable to initiate a controllable discharge of the discharge capacitor through the flash lamp. Control means connected to the current switch for controlling the rate of discharge of the discharge capacitor thereby to effectively keep the flash lamp in an ionized state between successive discharges of the discharge capacitor. Advantageously, the control means is operable to discharge the discharge capacitor at a rate greater than 10,000 Hz and even up to a rate greater than about 250,000 Hz. 14 figs.

  16. Energetic neutral atom response to solar wind dynamic pressure enhancements

    E-Print Network [OSTI]

    Lyons, Larry

    Energetic neutral atom response to solar wind dynamic pressure enhancements D.-Y. Lee,1 S. Ohtani,2; published 11 September 2007. [1] We have investigated the response of the ring current to solar wind dynamic adiabatically energized by the compression. The increased ENA emission rate drops as Pdyn decreases, implying

  17. Grand Coulee Transmission Line Replacement Project

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    by the Bureau of Reclamation to design and construct six new 500-kV overhead transmission lines at Grand Coulee Dam. BPA will replace the existing underground transmission...

  18. Ames Lab 101: Next Generation Power Lines

    ScienceCinema (OSTI)

    Russell, Alan

    2012-08-29T23:59:59.000Z

    Ames Laboratory scientist Alan Russell discusses the need to develop new power lines that are stronger and more conductive as a way to address the problem of the nation's aging and inadequate power grid.

  19. DNA Assembly Line for Nano-Construction

    ScienceCinema (OSTI)

    Oleg Gang

    2010-01-08T23:59:59.000Z

    Building on the idea of using DNA to link up nanoparticles scientists at Brookhaven National Lab have designed a molecular assembly line for high-precision nano-construction. Nanofabrication is essential for exploiting the unique properties of nanoparticl

  20. Lining Over Refractory - Conserve Energy and Capital

    E-Print Network [OSTI]

    Jost, M. L.; Barrows, G. L.

    1980-01-01T23:59:59.000Z

    .~. LINING OVER REFRACTORY - CONSERVE ENERGY & CAPITAL by Mark L. Jost Gerald L. Barrows The Carborundum Company Niagara Falls, New York INTRODUCTION Companies operating industrial heating equip Advantages ment find themselves coming under...

  1. IIR algorithms for adaptive line enhancement

    SciTech Connect (OSTI)

    David, R.A.; Stearns, S.D.; Elliott, G.R.; Etter, D.M.

    1983-01-01T23:59:59.000Z

    We introduce a simple IIR structure for the adaptive line enhancer. Two algorithms based on gradient-search techniques are presented for adapting the structure. Results from experiments which utilized real data as well as computer simulations are provided.

  2. Line Environment, Safety and Health Oversight

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-06-26T23:59:59.000Z

    Sets forth the Department's expectations line management environment, safety and health (ES&H) oversight and for the use of contractor self-assessment programs as the cornerstone for this oversight. Canceled by DOE O 226.1.

  3. Electrical Transmission Line Diametrical Retention Mechanism

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David (Lehi, UT); Dahlgren, Scott (Provo, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT); Fox, Joe (Spanish Fork, UT)

    2006-01-03T23:59:59.000Z

    The invention is a mechanism for retaining an electrical transmission line. In one embodiment of the invention it is a system for retaining an electrical transmission line within downhole components. The invention allows a transmission line to be attached to the internal diameter of drilling components that have a substantially uniform drilling diameter. In accordance with one aspect of the invention, the system includes a plurality of downhole components, such as sections of pipe in a drill string, drill collars, heavy weight drill pipe, and jars. The system also includes a coaxial cable running between the first and second end of a drill pipe, the coaxial cable having a conductive tube and a conductive core within it. The invention allows the electrical transmission line to withstand the tension and compression of drill pipe during routine drilling cycles.

  4. Temperatures in the blast furnace refractory lining

    SciTech Connect (OSTI)

    Hebel, R.; Streuber, C. [Didier-M and P Energietechnik GmbH, Wiesbaden (Germany); Steiger, R. [Didier-M and P Engineering Services, Highland, IN (United States); Jeschar, R. [TU Clausthal (Germany). Inst. fuer Energieverfahrenstechnik und Brennstofftechnik

    1995-12-01T23:59:59.000Z

    The campaign life duration of a blast furnace is mainly determined by the condition of the refractory lining in heavy-duty zones such as the hearth, bosh, belly and lower stack. To achieve a desired lifetime, the temperature of the lining in these areas thereby proved to be the decisive controllable parameter. Low operating temperatures result in prolonged service life and are attained through high cooling efficiency. Besides the refractory grade chosen, the wear profile is mainly determined by the type of cooling system applied and the cooling intensity. Therefore, an appropriate compromise between long service life and energy losses has to be found in each case. In order to predict the service life of a lining it is important to know the wear condition at all times during the campaign. The paper describes the approaches the authors have made so far on European blast furnaces, on a theoretical and practical basis, on how to analyze the lining wear.

  5. Gila to North Gila Transmission Line Rebuild

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the new APS line. Western's land action entails acquiring up to an additional 50 feet right-of-way adjacent to the existing Gila Knob ROW, transferring a portion of the Gila...

  6. Heat-Traced Fluid Transfer Lines

    E-Print Network [OSTI]

    Schilling, R. E.

    1984-01-01T23:59:59.000Z

    HEAT-TRACED FLUID TRANSFER LINES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio This paper discusses basic considerations in designing a heat tracing system using either steam or electrical tracing. Four basic reasons to heat...

  7. Productivity Improvement of a Manual Assembly Line

    E-Print Network [OSTI]

    Yerasi, Pranavi

    2012-10-19T23:59:59.000Z

    The current project addresses the productivity improvement of a manual assembly line by making use of operations analysis in the framework of Lean production. A methodology is proposed that helps to improve the productivity of any production process...

  8. Ames Lab 101: Next Generation Power Lines

    SciTech Connect (OSTI)

    Russell, Alan

    2010-01-01T23:59:59.000Z

    Ames Laboratory scientist Alan Russell discusses the need to develop new power lines that are stronger and more conductive as a way to address the problem of the nation's aging and inadequate power grid.

  9. What is the Broad Line Region?

    E-Print Network [OSTI]

    Ari Laor

    2003-12-16T23:59:59.000Z

    What is the Broad Line Region (BLR) made of? What determines its location? Why is it sometimes missing? What controls its properties? Some recent results and new approaches which may shed light on these issues are briefly described.

  10. Corona losses in HVdc bipolar lines

    SciTech Connect (OSTI)

    Corbellini, U.; Pelacchi, P. [Univ. of Pisa (Italy). Dept. of Electric Systems and Automation] [Univ. of Pisa (Italy). Dept. of Electric Systems and Automation

    1996-07-01T23:59:59.000Z

    The problem related to the prediction of corona losses in HVdc bipolar lines has been solved, in the past, by means of semi-empirical monomial formulae. However, the proposed formulae that are simpler to use do not always give adequate calculation precision, while the formulae that provide the closest results require implicit functions of different complexity, which are difficult to apply; moreover, it is not possible to understand clearly what influence the variations of the different line parameters have on the losses themselves. The new monomial semi-empirical relationship, proposed to predict the corona losses in HVdc bipolar lines, is very simple to use; it highlights the dependence of power losses due to the corona effect by the different line parameters. The formula has been developed by elaborating a considerable amount of available experimental data.

  11. Dynamic-tensile-extrusion response of fluoropolymers

    SciTech Connect (OSTI)

    Brown, Eric N [Los Alamos National Laboratory; Trujillo, Carl P [Los Alamos National Laboratory; Gray, George T [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The current work applies the recently developed Dynamic-Tensile-Extrusion (Dyn-Ten-Ext) technique to polytetrafluoroethylene (PTFE) and polychlorotrifluoroethylene (PCTFE). Similar to the Taylor Impact Rod, Dynamic-Tensile-Extrusion is a strongly integrated test, probing a wide range of strain rates and stress states. However, the stress state is primarily tensile enabling investigation of dynamic tensile failure modes. Here we investigate the influence of this propensity to neck or not between PCTFE and PTFE on their response under dynamic tensile extrusion loading. The results of the Dyn-Ten-Ext technique are compared with two classic techniques. Both polymers have been investigated using Tensile Split Hopkinson Pressure Bar. The quasistatic and dynamic responses of both fluoro-polymers have been extensively characterized. The two polymers exhibit significantly different failure behavior under tensile loading at moderate strain rates. Polytetrafluoroethylene resists formation of a neck and exhibits significant strain hardening. Independent of temperature or strain rate, PTFE sustains true strains to failure of approximately 1.5. Polychlorotrifluoroethylene, on the other hand, consistently necks at true strains of approximately 0.05.

  12. On dynamic prices: a clash of beliefs?

    SciTech Connect (OSTI)

    Hanser, Philip Q

    2010-07-15T23:59:59.000Z

    While insightful essays have been written regarding the moral appropriateness of dynamic pricing, they have an implicit underlying framework for determining justness and fairness that may not necessarily accord completely with the view promulgated in regard to utility rate setting generally. (author)

  13. Energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 21?Z?28

    SciTech Connect (OSTI)

    Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk; Keenan, Francis P.

    2012-11-15T23:59:59.000Z

    We report calculations of energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 21?Z?28. The General-Purpose Relativistic Atomic Structure Package is adopted for calculating energy levels and radiative rates, while for determining the collision strengths and subsequently the excitation rates, the Dirac Atomic R-matrix Code is used. Oscillator strengths, radiative rates, and line strengths are listed for all E1, E2, M1, and M2 transitions among the lowest 24 levels of the Li-like ions considered. Collision strengths have been averaged over a Maxwellian velocity distribution, and the effective collision strengths obtained are given over a wide temperature range up to 10{sup 7.8} K. Additionally, lifetimes are listed for all calculated levels of these ions. Finally, extensive comparisons are made with results available in the literature, as well as with our analogous calculations for all parameters with the Flexible Atomic Code, in order to assess the accuracy of the results.

  14. Energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 12?Z?20

    SciTech Connect (OSTI)

    Aggarwal, Kanti M., E-mail: K.Aggarwal@qub.ac.uk; Keenan, Francis P.

    2013-03-15T23:59:59.000Z

    We report calculations of energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 12?Z?20. The GRASP (general-purpose relativistic atomic structure package) is adopted for calculating energy levels and radiative rates, while for determining the collision strengths and subsequently the excitation rates, the Dirac atomic R-matrix code is used. Oscillator strengths, radiative rates, and line strengths are reported for all E1, E2, M1, and M2 transitions among the lowest 24 levels of the Li-like ions considered. Collision strengths have been averaged over a Maxwellian velocity distribution, and the effective collision strengths obtained are reported over a wide temperature range up to 10{sup 7.4} K. Additionally, lifetimes are also listed for all calculated levels of the ions. Finally, extensive comparisons are made with results available in the literature, as well as with our parallel calculations for all parameters with the Flexible Atomic Code, in order to assess the accuracy of the reported results.

  15. Effect of motions in prominences on the helium resonance lines in the extreme ultraviolet

    E-Print Network [OSTI]

    Nicolas Labrosse; Pierre Gouttebroze; Jean-Claude Vial

    2006-12-08T23:59:59.000Z

    We aim at studying the effect of radial motions on the spectrum emitted by moving prominences in the helium resonance lines and at facilitating the interpretation of observations, in order to improve our understanding of these dynamic structures. We develop our non-local thermodynamic equilibrium radiative transfer code formerly used for the study of quiescent prominences. The new numerical code is now able to solve the statistical equilibrium and radiative transfer equations in the non-static case by using velocity-dependent boundary conditions for the solution of the radiative transfer problem. This first study investigates the effects of different physical conditions (temperature, pressure, geometrical thickness) on the emergent helium radiation. The motion of the prominence plasma induces a Doppler dimming effect on the resonance lines of He I and He II. The velocity effects are particularly important for the He II 304 A line as it is mostly formed by resonant diffusion of incident radiation under prominence conditions. The He I resonance lines at 584 and 537 A also show some sensitivity to the motion of the plasma, all the more when thermal emission is not too important in these lines. We also show that it is necessary to consider partial redistribution in frequency for the scattering of the incident radiation. This set of helium lines offers strong diagnostic possibilities that can be exploited with the SOHO spectrometers and with the EIS spectrometer on board the Hinode satellite. The addition of other helium lines and of lines from other elements (in particular hydrogen) in the diagnostics will further enhance the strength of the method.

  16. 950 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 46, NO. 8, AUGUST 1999 Dynamic and Short-Circuit Power of CMOS

    E-Print Network [OSTI]

    Ismail, Yehea

    . 8, AUGUST 1999 Dynamic and Short-Circuit Power of CMOS Gates Driving Lossless Transmission Lines is shown to be less than 7% for CMOS gates driving LC transmission lines where the line is matched and short-circuit power consumption of a complementary metal­oxide­semidconductor (CMOS) gate driving

  17. Near Infrared Spectroscopy of High Redshift Active Galactic Nuclei. I. A Metallicity-Accretion Rate Relationship

    E-Print Network [OSTI]

    O. Shemmer; H. Netzer; R. Maiolino; E. Oliva; S. Croom; E. Corbett; L. di Fabrizio

    2004-06-24T23:59:59.000Z

    We present new near infrared spectroscopic measurements of the H_beta region for a sample of 29 luminous high redshift quasars. We have measured the width of H_beta in those sources, and added archival H_beta width measurements, to create a sample of 92 active galactic nuclei (AGNs) for which H_beta width and rest-frame UV measurements of N V \\lambda 1240 and C IV \\lambda 1549 emission-lines are available. Our sample spans six orders of magnitude in luminosity and includes 31 radio-loud AGNs. It also includes 10 narrow-line Seyfert 1 galaxies and one broad absorption-line quasar. We find that metallicity, indicated by the N V/C IV line ratio, is primarily correlated with accretion rate, which is a function of luminosity and H_beta line-width. This may imply an intimate relation between starburst, responsible for the metal enrichment of the nuclear gas, and AGN fueling, represented by the accretion rate. The correlation of metallicity with luminosity, or black hole (BH) mass, is weaker in contrast with recent results which were based on measurements of the width of C IV. We argue that using C IV as a proxy to H_beta in estimating M_BH might be problematic and lead to spurious BH mass and accretion rate estimates in individual sources. We discuss the potential implications of our new result in the framework of the starburst-AGN connection and theories of BH growth.

  18. Dynamics of Motivations

    E-Print Network [OSTI]

    Knoll, Jörn

    Dynamics of Resonances GSI, 18.05.2005 Motivations Thermal Equilibrium -N- vectormesons Di-leptons Towards dynamics Conserving -functional Gradient ap- proximation Quantum Kinetic Equation Summary Dynamics. Voskresensky1,3 1GSI 2Kurchatov Inst. (Moscow) 3Moscow Ins. for Physics and Engineering #12;Dynamics

  19. Dynamics on Lorentz manifolds

    E-Print Network [OSTI]

    Zeghib, Abdelghani

    Dynamics on Lorentz manifolds Abdelghani Zeghib Introduction Motivations and questions Examples Results Results Previous results Linear Dynamics General considerations Furstenberg Lemma Lorentz Dynamics://www.umpa.ens-lyon.fr/~zeghib/ (joint work with Paolo Piccione) #12;Dynamics on Lorentz manifolds Abdelghani Zeghib Introduction

  20. Introduction Basic dynamics

    E-Print Network [OSTI]

    LaCasce, Joseph H.

    Introduction Basic dynamics The Gulf Stream The thermohaline circulation Ocean currents: some misconceptions and some dynamics Joe LaCasce Dept. Geosciences October 30, 2012 Joe LaCasce Dept. Geosciences Ocean currents: some misconceptions and some dynamics #12;Introduction Basic dynamics The Gulf Stream

  1. Solidification at the High and Low Rate Extreme

    SciTech Connect (OSTI)

    Halim Meco

    2004-12-19T23:59:59.000Z

    The microstructures formed upon solidification are strongly influenced by the imposed growth rates on an alloy system. Depending on the characteristics of the solidification process, a wide range of growth rates is accessible. The prevailing solidification mechanisms, and thus the final microstructure of the alloy, are governed by these imposed growth rates. At the high rate extreme, for instance, one can have access to novel microstructures that are unattainable at low growth rates. While the low growth rates can be utilized for the study of the intrinsic growth behavior of a certain phase growing from the melt. Although the length scales associated with certain processes, such as capillarity, and the diffusion of heat and solute, are different at low and high rate extremes, the phenomena that govern the selection of a certain microstructural length scale or a growth mode are the same. Consequently, one can analyze the solidification phenomena at both high and low rates by using the same governing principles. In this study, we examined the microstructural control at both low and high extremes. For the high rate extreme, the formation of crystalline products and factors that control the microstructure during rapid solidification by free-jet melt spinning are examined in Fe-Si-B system. Particular attention was given to the behavior of the melt pool at different quench-wheel speeds. Since the solidification process takes place within the melt-pool that forms on the rotating quench-wheel, we examined the influence of melt-pool dynamics on nucleation and growth of crystalline solidification products and glass formation. High-speed imaging of the melt-pool, analysis of ribbon microstructure, and measurement of ribbon geometry and surface character all indicate upper and lower limits for melt-spinning rates for which nucleation can be avoided, and fully amorphous ribbons can be achieved. Comparison of the relevant time scales reveals that surface-controlled melt-pool oscillation may be the dominant factor governing the onset of unsteady thermal conditions accompanied by varying amounts of crystalline nucleation observed near the lower limit. At high quench-wheel velocities, the influence of these oscillations is minimal due to very short melt-pool residence times. However, microstructural evidence suggests that the entrapment of gas pockets at the wheel-metal interface plays a critical role in establishing the upper rate limit. An observed transition in wheel-side surface character with increasing melt-spinning rate supports this conclusion.

  2. Reaction rates for mesoscopic reaction-diffusion kinetics

    E-Print Network [OSTI]

    Stefan Hellander; Andreas Hellander; Linda Petzold

    2015-01-28T23:59:59.000Z

    The mesoscopic reaction-diffusion master equation (RDME) is a popular modeling framework, frequently applied to stochastic reaction-diffusion kinetics in systems biology. The RDME is derived from assumptions about the underlying physical properties of the system, and it may produce unphysical results for models where those assumptions fail. In that case, other more comprehensive models are better suited, such as hard-sphere Brownian dynamics (BD). Although the RDME is a model in its own right, and not inferred from any specific microscale model, it proves useful to attempt to approximate a microscale model by a specific choice of mesoscopic reaction rates. In this paper we derive mesoscopic reaction rates by matching certain statistics of the RDME solution to statistics of the solution of a widely used microscopic BD model: the Smoluchowski model with a mixed boundary condition at the reaction radius of two molecules. We also establish fundamental limits for the range of mesh resolutions for which this approach yields accurate results, and show both theoretically and in numerical examples that as we approach the lower fundamental limit, the mesoscopic dynamics approach the microscopic dynamics.

  3. Hydro-Gravitational-Dynamics of Planets and Dark Energy

    E-Print Network [OSTI]

    Carl H. Gibson; Rudolph E. Schild

    2008-08-24T23:59:59.000Z

    Self-gravitational fluid mechanical methods termed hydro-gravitational-dynamics (HGD) predict plasma fragmentation 0.03 Myr after the turbulent big bang to form protosuperclustervoids, turbulent protosuperclusters, and protogalaxies at the 0.3 Myr transition from plasma to gas. Linear protogalaxyclusters fragment at 0.003 Mpc viscous-inertial scales along turbulent vortex lines or in spirals, as observed. The plasma protogalaxies fragment on transition into white-hot planet-mass gas clouds (PFPs) in million-solar-mass clumps (PGCs) that become globular-star-clusters (GCs) from tidal forces or dark matter (PGCs) by freezing and diffusion into 0.3 Mpc halos with 97% of the galaxy mass. The weakly collisional non-baryonic dark matter diffuses to > Mpc scales and frag-ments to form galaxy cluster halos. Stars and larger planets form by binary mergers of the trillion PFPs per PGC on 0.03 Mpc galaxy accretion disks. Star deaths depend on rates of planet accretion and internal star mixing. Moderate accretion rates produce white dwarfs that evaporate surrounding gas planets by spin-radiation to form planetary nebulae before Supernova Ia events, dimming some events to give systematic distance errors misinterpreted as the dark energy hypothesis and overestimates of the universe age. Failures of standard LCDM cosmological models reflect not only obsolete Jeans 1902 fluid mechanical assumptions, but also failures of standard turbulence models that claim the cascade of turbulent kinetic energy is from large scales to small. Because turbulence is always driven at all scales by inertial-vortex forces the turbulence cascade is always from small scales to large.

  4. Yield strength dependence on strain rate of molybdenum-alloy nanofibers

    SciTech Connect (OSTI)

    Loya, P. E.; Peng, C.; Zhang, P.; Zhang, J.; Lou, J. [Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005 (United States); Xia, Y. Z. [Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States); Bei, H. [Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); George, E. P.; Gao, Y. F. [Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States); Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

    2014-06-23T23:59:59.000Z

    The yield strength dependence on strain rate was studied for molybdenum-alloy nanofibers with varying initial dislocation density at three different pre-strain levels. In-situ tensile experiments at three displacement rates were carried out in a scanning electron microscope. Yield strength and its scatter decreased as a function of the pre-strain level for different displacement rates. A statistical model was used to analyze the results, and a negative strain rate dependence was inferred from the yield experiments. This finding suggests the need for theoretical investigations since classical models such as dynamic strain aging may have limitations at such nanoscales.

  5. Component/OEM XC-HR50 High Frame Rate Monochrome Camera

    E-Print Network [OSTI]

    Demoulin, Pascal

    Monochrome Camera B/W Progressive Scan Cameras #12;These new cameras expand the range of products in Sony's progressive scan and high-frame rate, compact camera line up! Introducing the newest additions to Sony's B/sec. for compatibility with slower vision systems using Sony XC-55 cameras. The XC-HR50 and XC-HR70 cameras incorporate

  6. MATHEMATICAL ANALYSIS OF CONDUCTING AND SUPERCONDUCTING TRANSMISSION LINES

    E-Print Network [OSTI]

    Ramdani, Karim - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

    MATHEMATICAL ANALYSIS OF CONDUCTING AND SUPERCONDUCTING TRANSMISSION LINES ANNE-SOPHIE BONNET propagation in the microstrip transmission lines used in microelectronics. In the first part, the case of the perfectly conducting strip. Key words. superconducting transmission lines, waveguides, spectral analysis

  7. A Search for "Dwarf" Seyfert Nuclei. VI. Properties of Emission-Line Nuclei in Nearby Galaxies

    E-Print Network [OSTI]

    Luis C. Ho; Alexei V. Filippenko; Wallace L. W. Sargent

    2002-10-02T23:59:59.000Z

    We use the database from Paper III to quantify the global and nuclear properties of emission-line nuclei in the Palomar spectroscopic survey of nearby galaxies. We show that the host galaxies of Seyferts, LINERs, and transition objects share remarkably similar large-scale properties and local environments. The distinguishing traits emerge on nuclear scales. Compared with LINERs, Seyfert nuclei are an order of magnitude more luminous and exhibit higher electron densities and internal extinction. We suggest that Seyfert galaxies possess characteristically more gas-rich circumnuclear regions, and hence a more abundant fuel reservoir and plausibly higher accretion rates. The differences between the ionization state of the narrow emission-line regions of Seyferts and LINERs can be partly explained by the differences in their nebular properties. Transition-type objects are consistent with being composite (LINER/\\hii) systems. With very few exceptions, the stellar population within the central few hundred parsecs of the host galaxies is uniformly old, a finding that presents a serious challenge to starburst or post-starburst models for these objects. Seyferts and LINERs have virtually indistinguishable velocity fields as inferred from their line widths and line asymmetries. All three classes of objects obey a strong correlation between line width and line luminosity. We argue that the angular momentum content of circumnuclear gas may be an important factor in determining whether a nucleus becomes active. Finally, we discuss some possible complications for the unification model of Seyfert galaxies posed by our observations. (Abridged)

  8. Molecular dynamics simulation studies of structural and dynamical properties of rapidly quenched Al

    SciTech Connect (OSTI)

    Shen, B. [Fudan University; Liu, C. Y. [Zhengzhou University; Jia, Y. [Zhengzhou University; Yue, G. Q. [Fudan University; Ke, F. S. [Fudan University; Zhao, H. B. [Fudan University; Chen, L. Y. [Fudan University; Wang, S. Y. [Ames Laboratory; Wang, Cai-Zhuang [Ames Laboratory; Ho, Kai-Ming [Ames Laboratory

    2013-06-11T23:59:59.000Z

    The structural and dynamical properties of rapidly quenched Al are studied by molecular dynamics simulations. The pair-correlation function of high temperature liquid Al agrees well with the experimental results. Different cooling rates are applied with high cooling rates leading to glass formation, while low cooling rates leading to crystallization. The local structures are characterized by Honeycutt–Andersen indices and Voronoi tessellation analysis. The results show that for high cooling rates, the local structures of the liquid and glassy Al are predominated by icosahedral clusters, together with considerable amount of face-centered cubic and hexagonal close packed short-range orders. These short-range order results are further confirmed using the recently developed atomic cluster alignment method. Moreover, the atomic cluster alignment clearly shows the crystal nucleation process in supercooled liquid of Al. Finally, the mean square displacement for the liquid is also analyzed, and the corresponding diffusion coefficient as a function of temperature is calculated.

  9. Intraclass Price Elasticity & Electric Rate Design 

    E-Print Network [OSTI]

    Gresham, K. E.

    1987-01-01T23:59:59.000Z

    Electric rate design relies on cost incurrance for pricing and pricing structures. However, as utilities move into a marketing mode, rate design needs to respond more to customer reactions to pricing changes. Intraclass price elasticities aid rate...

  10. On-site rubber lining -- Application of precured and self-curing rubber linings

    SciTech Connect (OSTI)

    Fenner, J. [Keramchemie GmbH, Siershahn (Germany)

    1998-12-31T23:59:59.000Z

    Rubber linings are applied as a corrosion protection system in a wide range of plants and installations of the industrial sector. In addition to the execution of lining works in a workshop, the on-site application of this corrosion protection system on the construction site has gained increasing importance. The various procedures utilized to apply the corrosion protection linings will be briefly presented in the following paper. In particular the precured and self curing rubber linings together with their scope of use and application on construction sites will be described in more detail.

  11. New Construction of Distribution Lines, Service Lines, and Appurtenant Facilities in Residential Subdivisions (New York)

    Broader source: Energy.gov [DOE]

    Any proposed construction of electricity-related facilities in residential subdivisions, including distribution and service lines and appurtenant facilities, is subject to these regulations, which...

  12. O.A.R. 734-055 - Pole Lines, Buried Cables, Pipe lines, Signs...

    Open Energy Info (EERE)

    buried cables, pipe lines, signs miscellaneous operations upon state highway right-of-way and properties under the jurisdiction of the department of transportation. Published N...

  13. October 1996 - September 2001 Wholesale Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA charges

  14. October 2001 - March 2002 Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA charges1

  15. October 2001 - September 2006 Wholesale Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA charges11

  16. October 2002 - March 2003 Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA2 - March

  17. October 2003 - March 2004 Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA2 - March3

  18. October 2004 - March 2005 Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA2 -

  19. October 2005 - March 2006 Power Rates (rates/previous)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctober 1996 - September 2001 The rates BPA2 -5 -

  20. The dynamic cusp aurora on 30 November 1997: response to southward turning of the IMF

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The dynamic cusp aurora on 30 November 1997: response to southward turning of the IMF P. E a Accepted: 26 January 1999 Abstract. We document the detailed dynamics of the dayside aurora in the $1200®cation of both the red (630.0 nm) and green (557.7 nm) line emissions in the cusp aurora near 1200 MLT and $100

  1. Dynamic pricing? Not so fast. a residential consumer perspective

    SciTech Connect (OSTI)

    Alexander, Barbara R.

    2010-07-15T23:59:59.000Z

    With the installation of smart metering, will residential customers be moved to ''dynamic'' pricing? Some supporters of changing residential rate design from a fixed and stable rate structure believe customers should be required to take electric service with time-variant price signals. Not so fast, though. There are real implications associated with this strategy. (author)

  2. Stochastic population dynamics: The Poisson approximation Hernan G. Solari*

    E-Print Network [OSTI]

    Natiello, Mario

    frequency transition rate that only depends on the state of the system 16 . This setting has been in terms of events such as death, birth, contagion, emission, absorption, etc., and we assume that the event-rates satisfy a generalized mass-action law. The dynamics of the populations is then the result

  3. Estimating Power System Dynamic States Using Extended Kalman Filter

    SciTech Connect (OSTI)

    Huang, Zhenyu; Schneider, Kevin P.; Nieplocha, Jaroslaw; Zhou, Ning

    2014-10-31T23:59:59.000Z

    Abstract—The state estimation tools which are currently deployed in power system control rooms are based on a steady state assumption. As a result, the suite of operational tools that rely on state estimation results as inputs do not have dynamic information available and their accuracy is compromised. This paper investigates the application of Extended Kalman Filtering techniques for estimating dynamic states in the state estimation process. The new formulated “dynamic state estimation” includes true system dynamics reflected in differential equations, not like previously proposed “dynamic state estimation” which only considers the time-variant snapshots based on steady state modeling. This new dynamic state estimation using Extended Kalman Filter has been successfully tested on a multi-machine system. Sensitivity studies with respect to noise levels, sampling rates, model errors, and parameter errors are presented as well to illustrate the robust performance of the developed dynamic state estimation process.

  4. High frame rate CCD camera with fast optical shutter

    SciTech Connect (OSTI)

    Yates, G.J.; McDonald, T.E. Jr. [Los Alamos National Lab., NM (United States); Turko, B.T. [Lawrence Berkeley National Lab., CA (United States)

    1998-09-01T23:59:59.000Z

    A high frame rate CCD camera coupled with a fast optical shutter has been designed for high repetition rate imaging applications. The design uses state-of-the-art microchannel plate image intensifier (MCPII) technology fostered/developed by Los Alamos National Laboratory to support nuclear, military, and medical research requiring high-speed imagery. Key design features include asynchronous resetting of the camera to acquire random transient images, patented real-time analog signal processing with 10-bit digitization at 40--75 MHz pixel rates, synchronized shutter exposures as short as 200pS, sustained continuous readout of 512 x 512 pixels per frame at 1--5Hz rates via parallel multiport (16-port CCD) data transfer. Salient characterization/performance test data for the prototype camera are presented, temporally and spatially resolved images obtained from range-gated LADAR field testing are included, an alternative system configuration using several cameras sequenced to deliver discrete numbers of consecutive frames at effective burst rates up to 5GHz (accomplished by time-phasing of consecutive MCPII shutter gates without overlap) is discussed. Potential applications including dynamic radiography and optical correlation will be presented.

  5. Active dendrites enhance neuronal dynamic range

    E-Print Network [OSTI]

    Leonardo L. Gollo; Osame Kinouchi; Mauro Copelli

    2009-08-08T23:59:59.000Z

    Since the first experimental evidences of active conductances in dendrites, most neurons have been shown to exhibit dendritic excitability through the expression of a variety of voltage-gated ion channels. However, despite experimental and theoretical efforts undertaken in the last decades, the role of this excitability for some kind of dendritic computation has remained elusive. Here we show that, owing to very general properties of excitable media, the average output of a model of active dendritic trees is a highly non-linear function of their afferent rate, attaining extremely large dynamic ranges (above 50 dB). Moreover, the model yields double-sigmoid response functions as experimentally observed in retinal ganglion cells. We claim that enhancement of dynamic range is the primary functional role of active dendritic conductances. We predict that neurons with larger dendritic trees should have larger dynamic range and that blocking of active conductances should lead to a decrease of dynamic range.

  6. Pulsed Neurton Elemental On-Line Material Analyzer

    DOE Patents [OSTI]

    Vourvopoulos, George (Bowling Green, KY)

    2002-08-20T23:59:59.000Z

    An on-line material analyzer which utilizes pulsed neutron generation in order to determine the composition of material flowing through the apparatus. The on-line elemental material analyzer is based on a pulsed neutron generator. The elements in the material interact with the fast and thermal neutrons produced from the pulsed generator. Spectra of gamma-rays produced from fast neutrons interacting with elements of the material are analyzed and stored separately from spectra produced from thermal neutron reactions. Measurements of neutron activation takes place separately from the above reactions and at a distance from the neutron generator. A primary passageway allows the material to flow through at a constant rate of speed and operators to provide data corresponding to fast and thermal neutron reactions. A secondary passageway meters the material to allow for neutron activation analysis. The apparatus also has the capability to determine the density of the flowed material. Finally, the apparatus continually utilizes a neutron detector in order to normalize the yield of the gamma ray detectors and thereby automatically calibrates and adjusts the spectra data for fluctuations in neutron generation.

  7. Texas Fluid Dynamics Meeting, 2013 STABILITY OF ROTOR WAKES.

    E-Print Network [OSTI]

    Tinney, Charles E.

    to the presence of multiple helical fila- ments. Wakes of helicopter rotors, wind turbines and ma- rine propellers% confidence interval at wake ages, : 10 - 80. Dashed lines are separated by r /r = 3 in the wake of windTexas Fluid Dynamics Meeting, 2013 STABILITY OF ROTOR WAKES. Swathi M. Mula & Charles. E. Tinney

  8. EIS-0483: Estes to Flatiron Substation Transmission Lines Rebuild...

    Broader source: Energy.gov (indexed) [DOE]

    EIS-0483: Estes to Flatiron Substation Transmission Lines Rebuild Project, Larimer County, Colorado EIS-0483: Estes to Flatiron Substation Transmission Lines Rebuild Project,...

  9. Request for Information on Permitting of Transmission Lines:...

    Energy Savers [EERE]

    Request for Information on Permitting of Transmission Lines: Federal Register Notice Volume 77, No. 38 - Feb. 27, 2012 Request for Information on Permitting of Transmission Lines:...

  10. EIS-0447: Champlain Hudson Power Express Transmission Line Project...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    47: Champlain Hudson Power Express Transmission Line Project, New York EIS-0447: Champlain Hudson Power Express Transmission Line Project, New York Summary This EIS evaluated the...

  11. EA-1880: Big Bend to Witten Transmission Line Project, South...

    Office of Environmental Management (EM)

    880: Big Bend to Witten Transmission Line Project, South Dakota EA-1880: Big Bend to Witten Transmission Line Project, South Dakota Summary The USDA Rural Utilities Service, with...

  12. Transfer Lines to Connect Liquid Waste Facilities and Salt Waste...

    Office of Environmental Management (EM)

    Transfer Lines to Connect Liquid Waste Facilities and Salt Waste Processing Facility Transfer Lines to Connect Liquid Waste Facilities and Salt Waste Processing Facility October...

  13. Glosten Associates Tests Innovative High-Strength Mooring Lines...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Glosten Associates Tests Innovative High-Strength Mooring Lines for Deepwater Offshore Wind Installations Glosten Associates Tests Innovative High-Strength Mooring Lines for...

  14. alpha line profile: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    calculations of IP line profiles based on hot model distributions of interplanetary hydrogen. We also find that the line profiles get narrower during solar maximum. The results...

  15. Abstract--This paper investigates how to detect a dynamic voltage collapse situation. The generator and governor dynamics

    E-Print Network [OSTI]

    to an interest in maintaining an optimum, secure and reliable power system operation. One such security issue of the index during the line loss, slow increasing loading and step loading situations. The paper also brings simulations and investigation. Index Terms-- Voltage stability, dynamic voltage collapse, EUROSTAG, security

  16. Dynamics of a magnetized Bianchi I universe with vacuum energy

    E-Print Network [OSTI]

    Emma J. King; Peter Coles

    2007-03-27T23:59:59.000Z

    We make use of a flat, axisymmetric Bianchi I metric to investigate the effects of a magnetic field upon the dynamics of the universe for the case in which the accompanying fluid is a cosmological constant and derive two exact solutions to the dynamical equations for this situation. We examine the behaviour of the scale factor perpendicular and parallel to the field lines, A(t) and W(t) respectively, and find the expected behaviour. The field has the strongest effect when A(t) is small, decelerating collapse perpendicular to the field lines, due to magnetic pressure, and accelerating collapse along the field lines, due to magnetic tension, while the vacuum energy dominates at late time, driving accelerated expansion.

  17. Theory of the leak-rate of seals

    E-Print Network [OSTI]

    B. N. J. Persson; C. Yang

    2008-05-06T23:59:59.000Z

    Seals are extremely useful devices to prevent fluid leakage. However, the exact mechanism of roughness induced leakage is not well understood. We present a theory of the leak-rate of seals, which is based on percolation theory and a recently developed contact mechanics theory. We study both static and dynamics seals. We present molecular dynamics results which show that when two elastic solids with randomly rough surfaces are squeezed together, as a function of increasing magnification or decreasing squeezing pressure, a non-contact channel will percolate when the (relative) projected contact area, A/A_0, is of order 0.4, in accor dance with percolation theory. We suggest a simple experiment which can be used to test the theory.

  18. Masking line foregrounds in intensity mapping surveys

    E-Print Network [OSTI]

    Breysse, Patrick C; Kamionkowski, Marc

    2015-01-01T23:59:59.000Z

    We address the problem of line confusion in intensity mapping surveys and explore the possibility to mitigate line foreground contamination by progressively masking the brightest pixels in the observed map. We consider experiments targeting CO(1-0) at $z=3$, Ly$\\alpha$ at $z=7$, and CII at $z=7$, and use simulated intensity maps, which include both clustering and shot noise components of the signal and possible foregrounds, in order to test the efficiency of our method. We find that for CO and Ly$\\alpha$ it is quite possible to remove most of the foreground contribution from the maps via only 1%-3% pixel masking. The CII maps will be more difficult to clean, however, due to instrumental constraints and the high-intensity foreground contamination involved. While the masking procedure sacrifices much of the astrophysical information present in our maps, we demonstrate that useful cosmological information in the targeted lines can be successfully retrieved.

  19. Critical line of the deconfinement phase transition

    E-Print Network [OSTI]

    M. I. Gorenstein; M. Gazdzicki; W. Greiner

    2005-05-17T23:59:59.000Z

    Phase diagram of strongly interacting matter is discussed within the exactly solvable statistical model of the quark-gluon bags. The model predicts two phases of matter: the hadron gas at a low temperature T and baryonic chemical potential muB, and the quark-gluon gas at a high T and/or muB. The nature of the phase transition depends on a form of the bag mass-volume spectrum (its pre-exponential factor), which is expected to change with the muB/T ratio. It is therefore likely that the line of the 1st} order transition at a high muB/T ratio is followed by the line of the 2nd order phase transition at an intermediate muB/T, and then by the lines of "higher order transitions" at a low muB/T.

  20. Relativistic emission lines from accreting black holes - The effect of disk truncation on line profiles

    E-Print Network [OSTI]

    Andreas Mueller; Max Camenzind

    2003-09-30T23:59:59.000Z

    Relativistic emission lines generated by thin accretion disks around rotating black holes are an important diagnostic tool for testing gravity near the horizon. The iron K-line is of special importance for the interpretation of the X-ray emission of Seyfert galaxies, quasars and galactic X-ray binary systems. A generalized kinematic model is presented which includes radial drifts and non-Keplerian rotations for the line emitters. The resulting line profiles are obtained with an object-oriented ray tracer operating in the curved Kerr background metric. The general form of the Doppler factor is presented which includes all kinds of poloidal and toroidal motions near the horizon. The parameters of the model include the spin parameter, the inclination, the truncation and outer radius of the disk, velocity profiles for rotation and radial drift, the emissivity profile and a multi-species line-system. The red wing flux is generally reduced when radial drift is included as compared to the pure Keplerian velocity field. All resulting emission line profiles can be classified as triangular, double-horned, double-peaked, bumpy and shoulder-like. Of particular interest are emission line profiles generated by truncated standard accretion disks (TSD). It is also shown that the emissivity law has a great influence on the profiles. The characteristic shoulder-like line profile observed for the Seyfert galaxy MCG-6-30-15 can be reproduced for suitable parameters

  1. Abstract--Power Line Communications (PLC) is used for information exchange over the lines

    E-Print Network [OSTI]

    Boyer, Edmond

    Abstract-- Power Line Communications (PLC) is used for information exchange over the lines installed for delivering the electrical power. Inhome PLC is a technology which delivers telecom services to every corner of a household through already existing electrical wiring. In recent years, PLC has emerged

  2. Search for radiative pumping lines of OH masers: I. The 34.6um absorption line towards 1612 MHz OH maser sources

    E-Print Network [OSTI]

    J. H. He; R. Szczerba; P. S. Chen; A. M. Sobolev

    2004-12-31T23:59:59.000Z

    The 1612 MHz hydroxyl maser in circumstellar envelopes has long been thought to be pumped by 34.6um photons. Only recently, the Infrared Space Observatory has made possible spectroscopic observations which enable the direct confirmation of this pumping mechanism in a few cases. To look for the presence of this pumping line, we have searched the Infrared Space Observatory Data Archive and found 178 spectra with data around 34.6um for 87 galactic 1612MHz masers. The analysis performed showed that the noise level and the spectral resolution of the spectra are the most important factors affecting the detection of the 34.6um absorption line. Only 5 objects from the sample (3 red supergiants and 2 galactic center sources) are found to show clear 34.6um absorption (all of them already known) while two additional objects only tentatively show this line. The 3 supergiants show similar pump rates and their masers might be purely radiatively pumped. The pump rates of OH masers in late type stars are found to be about 0.05, only 1/5 of the theoretical value of 0.25 derived by Elitzur (1992). We have also found 16 maser sources which, according to the analysis assuming Elitzur's pump rate, should show the 34.6 $\\mu$m absorption line but do not. These non-detections can be tentatively explained by far-infrared photon pumping, clumpy nature of the OH masing region or a limb-filling emission effect in the OH shell.

  3. New Construction of Distribution Lines, Service Lines, and Appurtenant Facilities in Certain Visually Significant Resources Outside Residential Subdivisions (New York)

    Broader source: Energy.gov [DOE]

    Any proposed construction of distribution lines, service lines, and appurtenant facilities to electric utilities located near scenic areas of statewide significance, including Adirondack park...

  4. An analysis of multiple component mooring lines

    E-Print Network [OSTI]

    Walters, Thomas Robert

    1977-01-01T23:59:59.000Z

    -5 Tension At Excursion Parameter Response--Weight Parameter 0. 2; Pretension Parameter 16 38 6-6 Line Length Parameter Response-- Weight Parameter 0. 2; Pretension Parameter 16 39 6-7 Excursion Parameter Response-- Weight Parameter 0. 2; Pretension... Parameter 2 40 6-8 Anchor Load Parameter Response-- Weight Parameter 0. 2; Pretension Parameter 2 41 6-9 Tension At Excursion Parameter Response--Weight Parameter 0. 2; Pretension Parameter 2 6-'I 0 Line Length Parameter Response-- Weight Parameter 0...

  5. Boron-10 Lined Proportional Counter Wall Effects

    SciTech Connect (OSTI)

    Siciliano, Edward R.; Kouzes, Richard T.

    2012-05-01T23:59:59.000Z

    The Department of Energy Office of Nuclear Safeguards (NA-241) is supporting the project 'Coincidence Counting With Boron-Based Alternative Neutron Detection Technology' at Pacific Northwest National Laboratory (PNNL) for development of an alternative neutron coincidence counter. The goal of this project is to design, build and demonstrate a boron-lined proportional tube based system in the configuration of a coincidence counter. This report provides information about how variations in proportional counter radius and gas pressure in a typical coincident counter design might affect the observed signal from boron-lined tubes. A discussion comparing tubes to parallel plate counters is also included.

  6. Inductive gas line for pulsed lasers

    DOE Patents [OSTI]

    Benett, William J. (Livermore, CA); Alger, Terry W. (Tracy, CA)

    1985-01-01T23:59:59.000Z

    A gas laser having a metal inlet gas feed line assembly shaped as a coil, to function as an electrical inductance and therefore high impedance to pulses of electric current applied to electrodes at opposite ends of a discharge tube of a laser, for example. This eliminates a discharge path for the laser through the inlet gas feed line. A ferrite core extends through the coil to increase the inductance of the coil and provide better electric isolation. By elimination of any discharge breakdown through the gas supply, efficiency is increased and a significantly longer operating lifetime of the laser is provided.

  7. Inductive gas line for pulsed lasers

    DOE Patents [OSTI]

    Benett, W.J.; Alger, T.W.

    1982-09-29T23:59:59.000Z

    A gas laser having a metal inlet gas feed line assembly shaped as a coil, to function as an electrical inductance and therefore high impedance to pulses of electric current applied to electrodes at opposite ends of a discharge tube of a laser, for example. This eliminates a discharge path for the laser through the inlet gas feed line. A ferrite core extends through the coil to increase the inductance of the coil and provide better electric isolation. By elimination of any discharge breakdown through the gas supply, efficiency is increased and a significantly longer operating lifetime of the laser is provided.

  8. Experiences with On-Line STEAMPOP

    E-Print Network [OSTI]

    Nath, R.; Libby, D. J.; Marcinkowska, A. R.; Skarke, S. C.; Thomasson, M. J.; Worsham, B. A.

    SUBSYSTEM Several types of fuel are usually available in the plant (Figure 3). For each gaseous fuel, there may be headers at various pressure levels. The external supplies of fuel feed into some of these headers. There are also PRVs connecting some... optimization, and extended ENERGYPOP for joint optimization of a process unit with the plant utility system [4 J ? All of these optimizers are off-line programs. Our long-term goal is to have the plant wide optimizer running in an on-line mode so...

  9. Ionization Chambers in the FLASH Dump Line

    E-Print Network [OSTI]

    . 7, 2010FLASH Seminar, Dec. 7, 2010 BPM 13DUMP Dump Line Upgrade 2009Dump Line Upgrade 2009 BPM 9DUMP BPM 5DUMP Toroid 9DUMP OTR screen 9DUMP BLM 14DUMP BLM 13.1DUMP 13.2DUMP BLM 9DUMP BLM 6DUMP BLM 1.1DUMP 1.2DUMP BPM 10DUMP BPM 16DUMP 8 x BHM 16DUMP BLM 14R.DUMP 14L.DUMP 14U.DUMP 14D.DUMP Ionization

  10. EC Transmission Line Risk Identification and Analysis

    SciTech Connect (OSTI)

    Bigelow, Tim S [ORNL

    2012-04-01T23:59:59.000Z

    The purpose of this document is to assist in evaluating and planning for the cost, schedule, and technical project risks associated with the delivery and operation of the EC (Electron cyclotron) transmission line system. In general, the major risks that are anticipated to be encountered during the project delivery phase associated with the implementation of the Procurement Arrangement for the EC transmission line system are associated with: (1) Undefined or changing requirements (e.g., functional or regulatory requirements) (2) Underperformance of prototype, first unit, or production components during testing (3) Unavailability of qualified vendors for critical components Technical risks associated with the design and operation of the system are also identified.

  11. a poorer food conversion efficiency and survival rate. The lower survival rate (87~) of this

    E-Print Network [OSTI]

    rate. 3. Survival and growth rates and food efficien- cies were excellent for trout reared in brackish

  12. REPORT on the TRUCK BRAKE LINING WORKSHOP and FLEET OPERATORS' SURVEY

    SciTech Connect (OSTI)

    Blau, P.J.

    2003-02-03T23:59:59.000Z

    The report summarizes what transpired during brake linings-related workshop held at the Fall 2003 meeting of the Technology and Maintenance Council (TMC) in Charlotte, NC. The title of the workshop was ''Developing a Useful Friction Material Rating System''. It was organized by a team consisting of Peter Blau (Oak Ridge National Laboratory), Jim Britell (National Highway Traffic Safety Administration), and Jim Lawrence (Motor and Equipment Manufacturers Association). The workshop was held under the auspices of TMC Task Force S6 (Chassis), chaired by Joseph Stianche (Sanderson Farms, Inc.). Six invited speakers during the morning session provided varied perspectives on testing and rating aftermarket automotive and truck brake linings. They were: James R. Clark, Chief Engineer, Foundation Brakes and Wheel Equipment, Dana Corporation, Spicer Heavy Axle and Brake Division; Charles W. Greening, Jr, President, Greening Test Labs; Tim Duncan, General Manager, Link Testing Services;Dennis J. McNichol, President, Dennis NationaLease; Jim Fajerski, Business Manager, OE Sales and Applications Engineering, Federal Mogul Corporation; and Peter J. Blau, Senior Materials Development Engineer, Oak Ridge National Laboratory. The afternoon break-out sessions addressed nine questions concerning such issues as: ''Should the federal government regulate aftermarket lining quality?''; ''How many operators use RP 628, and if so, what's good or bad about it?''; and ''Would there be any value to you of a vocation-specific rating system?'' The opinions of each discussion group, consisting of 7-9 participants, were reported and consolidated in summary findings on each question. Some questions produced a greater degree of agreement than others. In general, the industry seems eager for more information that would allow those who are responsible for maintaining truck brakes to make better, more informed choices on aftermarket linings. A written fleet operator survey was also conducted during the TMC meeting. Twenty-one responses were received, spanning fleet sizes between 12 and 170,000 vehicles. Responses are summarized in a series of tables separated into responses from small (100 or fewer powered vehicles), medium (101-1000 vehicles), and large fleets (>1000 vehicles). The vast majority of fleets do their own brake maintenance, relying primarily on experience and lining manufactures to select aftermarket linings. At least half of the responders are familiar to some extent with TMC Recommended Practice 628 on brake linings, but most do not use this source of test data as the sole criterion to select linings. Significant shortfalls in the applicability of TMC RP 628 to certain types of brake systems were noted.

  13. Combined Retrieval, Microphysical Retrievals and Heating Rates

    SciTech Connect (OSTI)

    Feng, Zhe

    2013-02-22T23:59:59.000Z

    Microphysical retrievals and heating rates from the AMIE/Gan deployment using the PNNL Combined Retrieval.

  14. An analysis of international grain freight rates 

    E-Print Network [OSTI]

    Jonnala, Sneha Latha

    1999-01-01T23:59:59.000Z

    of the dependent variable was included in the model as an explanatory variable. The estimated econometric model was designed to explain ocean freight rates for grain. Results indicate rates increase at a decreasing rate with distance and rates decrease at a...

  15. 7, 29612989, 2007 Predicting arene rate

    E-Print Network [OSTI]

    Boyer, Edmond

    software or computing power. Measured gas-phase rate coefficients for the reaction of aromatic hydrocarbons

  16. Composite Fringe Benefit Rates Nancy R. Lewis

    E-Print Network [OSTI]

    Wood, Marcelo A.

    January 1, 2015 Retirement Eligible FY 2014-15 Rate FY 2015-16 Rate FY 2016-17 Rate B Healthcomp Faculty of Research #12;New Rates · Provided by the Budget Office for use when planning proposal budgets for contract and grants · Effective for use in proposals submitted to sponsors January 1, 2015 and thereafter · Title

  17. Combined Retrieval, Microphysical Retrievals and Heating Rates

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Feng, Zhe

    Microphysical retrievals and heating rates from the AMIE/Gan deployment using the PNNL Combined Retrieval.

  18. Comparing the performace of f1 testers versus their inbred line parents in evaluating experimental sorghum b and r lines in testcrosses.

    E-Print Network [OSTI]

    Packer, Daniel Jacob

    2009-05-15T23:59:59.000Z

    An appropriate tester correctly identifies the relative performance of experimental lines while maximizing the differences between lines. Most sorghum breeding programs use elite inbred lines testers. Inbred line testers evaluate experimental lines...

  19. A rate equation approach to cavity mediated laser cooling

    E-Print Network [OSTI]

    Tony Blake; Andreas Kurcz; Almut Beige

    2012-07-09T23:59:59.000Z

    The cooling rate for cavity mediated laser cooling scales as the Lamb-Dicke parameter eta squared. A proper analysis of the cooling process hence needs to take terms up to eta^2 in the system dynamics into account. In this paper, we present such an analysis for a standard scenario of cavity mediated laser cooling with eta cooling. However, for a weakly confined particle inside a strongly coupled cavity, which is the most interesting case for the cooling of molecules, numerical results indicate that even more detailed calculations are needed to model the cooling process accurately.

  20. Quantum Coherence Conservation by Growth in Environmental Dissipation Rate

    E-Print Network [OSTI]

    SaiToh, Akira; Nakahara, Mikio

    2007-01-01T23:59:59.000Z

    Quantum coherence conservation is shown to be achieved by a very high rate of dissipation of an environmental system coupled with a principal system. This effect is not in the list of previously-known effects of noise suppression, such as Zeno effect, dynamical decoupling, quantum error correction code, and decoherence free subspace. An analytical solution is found for a simplified model of a single qubit coupled with an environmental single qubit dissipating rapidly. We also show examples of coherence conservation in a spin-boson linear coupling model with a numerical evaluation.

  1. Quantum Coherence Conservation by Growth in Environmental Dissipation Rate

    E-Print Network [OSTI]

    Akira SaiToh; Robabeh Rahimi; Mikio Nakahara

    2007-10-23T23:59:59.000Z

    Quantum coherence conservation is shown to be achieved by a very high rate of dissipation of an environmental system coupled with a principal system. This effect is not in the list of previously-known strategies of noise suppression, such as Zeno effect, dynamical decoupling, quantum error correction code, and decoherence free subspace. An analytical solution is found for a simplified model of a single qubit coupled with an environmental single qubit dissipating rapidly. We also show examples of coherence conservation in a spin-boson linear coupling model with a numerical evaluation.

  2. EMERGING DIMMINGS OF ACTIVE REGIONS OBSERVED BY THE SOLAR DYNAMICS OBSERVATORY

    SciTech Connect (OSTI)

    Zhang Jun; Yang Shuhong [Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Liu Yang; Sun Xudong, E-mail: zjun@nao.cas.cn, E-mail: shuhongyang@nao.cas.cn, E-mail: yliu@sun.stanford.edu, E-mail: xudong@sun.stanford.edu [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305-4085 (United States)

    2012-12-01T23:59:59.000Z

    Using the observations from the Atmospheric Imaging Assembly and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, we statistically investigate the emerging dimmings (EDs) of 24 isolated active regions (IARs) from 2010 June to 2011 May. All the IARs show EDs in lower-temperature lines (e.g., 171 A) at their early emerging stages. Meanwhile, in higher temperature lines (e.g., 211 A), the ED regions brighten continuously. There are two types of EDs: fan-shaped and halo-shaped. There are 19 fan-shaped EDs and 5 halo-shaped ones. The EDs appear to be delayed by several to more than ten hours relative to the first emergence of the IARs. The shortest delay is 3.6 hr and the longest is 19.0 hr. The EDs last from 3.3 hr to 14.2 hr, with a mean duration of 8.3 hr. Before the appearance of the EDs, the emergence rate of the magnetic flux of the IARs is between 1.2 Multiplication-Sign 10{sup 19} Mx hr{sup -1} to 1.4 Multiplication-Sign 10{sup 20} Mx hr{sup -1}. The larger the emergence rate is, the shorter the delay time is. While the dimmings appear, the magnetic flux of the IARs ranges from 8.8 Multiplication-Sign 10{sup 19} Mx to 1.3 Multiplication-Sign 10{sup 21} Mx. These observations imply that the reconfiguration of the coronal magnetic fields due to reconnection between the newly emerging flux and the surrounding existing fields results in a new thermal distribution which leads to a dimming for the cooler channel (171 A) and brightening in the warmer channels.

  3. A simple packet retransmission strategy for throughput and delay enhancement on power line communication channels

    SciTech Connect (OSTI)

    Onunga, J.O. (Kenya Posts and Telecommunications Corp., Nairobi (Kenya)); Donaldson, R.W. (Univ. of British Columbia, Vancouver (Canada). Dept. of Electrical Engineering)

    1993-07-01T23:59:59.000Z

    A new, simple, and effective communication protocol is developed and evaluated for use on power line distribution networks. The protocol involves retransmission of unacknowledged packets, which are sent in either single or multiple (N) copies in accordance with estimates of communication link quality. Multiple packet copies can be code combined at the receiver, using majority voting on each bit position, to reduce packet error rates. Adaptive link quality estimates are based on the receipt or absence of positive acknowledgements. Information throughput efficiency is calculated and N optimized in terms of system variables. Performance benefits of code combining are clearly demonstrated. The algorithm was implemented and tested using a five-station intrabuilding power line communications network operating at 1.2, 2.4, 4.8 and 9.6 kbit/s data rate. Substantial throughput and delay improvement occurred on poor quality links, without degrading performance on good links.

  4. Probing femtosecond plasmon dynamics with nanometer resolution Jrg Lange, Daniela Bayer, Martin Rohmer, Carsten Wiemann, Oksana Gaier, Martin Aeschlimann,

    E-Print Network [OSTI]

    Aeschlimann, Martin

    Probing femtosecond plasmon dynamics with nanometer resolution Jörg Lange, Daniela Bayer, Martin electron excitations in silver nanoparticles (localized surface plasmons ­ LSP) is probed at femtosecond to particle variations in the plasmon eigenfrequency, which typically give rise to inhomogeneous line

  5. Population dynamics and movements of the Kemp's ridley sea turtle, lepidochelys kempii, in the northwestern Gulf of Mexico

    E-Print Network [OSTI]

    Seney, Erin Elizabeth

    2009-05-15T23:59:59.000Z

    analyses were used to characterize ridley population dynamics and movements in the northwestern Gulf of Mexico during 2003-2007. Recreational hook-and-line captures comprised approximately one third of non-nesting encounters along Galveston and Jefferson...

  6. Property:OpenEI/UtilityRate/EnergyRateStructure/Tier6Rate | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkinsInformation DemandReactivePowerChargeInformation Rate Jump to: navigation,

  7. International Journal of Systems Science, 1998, volume 29, number 9, pages 939-951 Performance analysis of serial production lines with quality

    E-Print Network [OSTI]

    Lim, Jong-Tae

    defective parts. The rejection rate of quality inspection machines should be considered as . . total number analysis of serial production lines with quality inspection machines M.-S. HANt, i.-T. LIMt* and D. The high production rate of machines in isolation and quality inspection machines are the basis of highly

  8. A Neutron Sensitive Microchannel Plate Detector with Cross Delay Line Readout

    SciTech Connect (OSTI)

    Berry, Kevin D [ORNL; Bilheux, Hassina Z [ORNL; Crow, Lowell [ORNL; Diawara, Yacouba [ORNL; Feller, W Bruce [Nova Scientific, Inc., Sturbridge, MA; Iverson, Erik B [ORNL; Martin, Adrian [Sensor Sciences, LLC; Robertson, Lee [ORNL

    2012-01-01T23:59:59.000Z

    Microchannel plates containing neutron absorbing elements such as boron and gadolinium in the bulk glass are used as the sensing element in high spatial resolution, high rate neutron imaging systems. In this paper we describe one such device, using both 10B and natural Gd, which employs cross delay line signal readout, with time-of-flight capability. This detector has a measured spatial resolution under 40 m FWHM, thermal neutron efficiency of 19%, and has recorded rates in excess of 500 kHz. A physical and functional description is presented, followed by a discussion of measurements of detector performance and a brief survey of some practical applications.

  9. Semiclassical pair production rate for rotating electric fields

    E-Print Network [OSTI]

    Eckhard Strobel; She-Sheng Xue

    2015-02-09T23:59:59.000Z

    We semiclassically investigate Schwinger pair production for pulsed rotating electric fields depending on time. To do so we solve the Dirac equation for two-component fields in a WKB-like approximation. The result shows that for two-component fields the spin distribution of produced pairs is generally not $1:1$. As a result the pair creation rates of spinor and scalar quantum electro dynamics (QED) are different even for one pair of turning points. For rotating electric fields the pair creation rate is dominated by particles with a specific spin depending on the sense of rotation for a certain range of pulse lengths and frequencies. We present an analytical solution for the momentum spectrum of the constant rotating field. We find interference effects not only in the momentum spectrum but also in the total particle number of rotating electric fields.

  10. Tariffs with Dynamic Supply Response

    E-Print Network [OSTI]

    Karp, Larry

    1985-01-01T23:59:59.000Z

    Giannini FDN iibrary TARIFFS WITH DYNAMIC SUPPLY RESWNSEpaper studies the optimal tariff in a dynamic framework. Thesellers, the optimal tariff is dynam- ically inconsistent;

  11. Geomembranes for Canal Lining Geosynthetics 2009

    E-Print Network [OSTI]

    for this application including PVC, HDPE, LDPE, CSPE, and EPDM geomembranes. Frequently these geomembranes require for canal liners based on field test programs. The first such test program was started with a PVC test to evaluate the effectiveness of a range of canal lining alternatives. Traditionally, PVC geomembranes have

  12. Community Trees Power Lines and Trees

    E-Print Network [OSTI]

    Koford, Rolf R.

    aesthetic and psychological benefits. Figure 2. Grown into a power pole. #12;become hazardous to peopleCommunity Trees Power Lines and Trees Introduction Trees serve many purposes in urban and rural, hundreds of people throughout the United States are injured or killed each year when they climb or prune

  13. The Arctic Tree Line and Climate Change

    E-Print Network [OSTI]

    Blouin-Demers, Gabriel

    ­ Compared the spruce treeline between 1947 and 1989 ­ Used remote sensing applications ­ Mean temperature cover - Causes surface heating Forest Tundra Chapin et al., (2005), 10 Nadezhda et al., (2008) Albedo) ­Heating effect exceeds cooling effect ­Advances in the tree line are causing global warming to occur even

  14. Microstrip transmission line tapers on ferrites

    SciTech Connect (OSTI)

    Albuquerque, M.R.; dAssuncao, A.G.; Lima, F. [Departamento de Engenharia Eletrica, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN (Brazil)] [Departamento de Engenharia Eletrica, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN (Brazil)

    1997-04-01T23:59:59.000Z

    The spectral domain approach is employed to perform a theoretical investigation of tapered microstrip lines on magnetized ferrite substrates. A linear variation of the conducting strip width along the direction of propagation is considered. The analysis takes into account the effects of the applied dc magnetic bias field in the transmission characteristics of these structures. The properties of the taper are determined by a model based on a segmentation of the considered line into uniform microstrip line subsections. Normalized phase constants and characteristic impedances are obtained by using the Hertz vector potentials method and Galerkin numerical technique. Numerical results are presented to show the taper input parameters as a function of the load impedance, geometrical dimensions, operating frequency, and ferrite parameters, considering the orientation and magnitude changes of the biasing magnetic-field {bold H}{sub 0}. The results agree fairly well with those available in the literature for tapered microstrip lines on isotropic dielectric substrates. {copyright} {ital 1997 American Institute of Physics.}

  15. GLOBAL LINE PROFILE ASYMMETRIES IN DISK GALAXIES

    E-Print Network [OSTI]

    Bershady, Matthew A.

    GLOBAL LINE PROFILE ASYMMETRIES IN DISK GALAXIES David R. Andersen1, Matthew A. Bershady2 1NRC profiles of 39 disk galaxies with H i and H ii data. We find good agreement between the first and second mo- ments of the profiles and recession and rotation velocities, respectively. The shapes of H i and H ii

  16. Dielectronic recombination lines of C{sup +}

    SciTech Connect (OSTI)

    Sochi, Taha, E-mail: taha.sochi@kcl.ac.uk; Storey, Peter J.

    2013-11-15T23:59:59.000Z

    The present paper presents atomic data generated to investigate the recombination lines of C II in the spectra of planetary nebulae. These data include energies of bound and autoionizing states, oscillator strengths and radiative transition probabilities, autoionization probabilities, and recombination coefficients. The R-matrix method of electron scattering theory was used to describe the C{sup 2+} plus electron system.

  17. Calibration for Frequencies of Stellar Spectral Lines

    E-Print Network [OSTI]

    Gomez, Juana

    2010-07-14T23:59:59.000Z

    to approximately three degrees Celsius. White Light-Emitting Diodes (LED?s) were used as light input. Light traveled through the bromine cell. The blue line corresponds to the initial measurement of the signal traveling through air, which only shows an almost...

  18. TRIBAND BRANCH LINE COUPLER USING DOUBLE-LORENTZ

    E-Print Network [OSTI]

    Nam, Sangwook

    TRIBAND BRANCH LINE COUPLER USING DOUBLE-LORENTZ TRANSMISSION LINES Hanseung Lee and Sangwook Nam) transmission lines (TL) provides two additional degrees of freedom in realizing triband microwave devices-Lorentz; transmission lines; triband; directional couplers 1. INTRODUCTION The concept of artificial TLs having

  19. Command Line Arguments in Ada95 Mark Allen Weiss

    E-Print Network [OSTI]

    Weiss, Mark Allen

    Command Line Arguments in Ada95 Mark Allen Weiss School of Computer Science Florida International (additional) arguments: ''­w'' and ''echo args.adb''. These are known as command line arguments. Command line on a command line can be accessed in an Ada program. In Ada83 there was no standard way of doing this. Ada95

  20. Dynamics of the Galaxy's Satellites

    E-Print Network [OSTI]

    James Binney

    2000-06-28T23:59:59.000Z

    The Milky Way's satellites provide unique information about the density of the Galactic halo at large radii. The inclusion of even a few rather inaccurate proper motions resolves an ambiguity in older mass estimates in favour of higher values. Many of the satellites are concentrated into streams. The dynamics of the Magellanic Stream provided an early indication that the halo reaches out to beyond 100 kpc. Tidal forces between the Clouds are currently disturbing the Clouds' internal dynamics. One would expect this damage to worsen rapidly as the tidal field of the MW excites the eccentricity of the Clouds' mutual orbit. This process, which has yet to be completely modelled, is important for understanding the degree of self-lensing in searches for gravitational lensing events. The Sagittarius Dwarf galaxy very likely contributes significantly to the Galactic warp. The direction of the warp's line of nodes is incorrectly predicted by the simplest models of the Dwarf's orbit. More sophisticated models, in which a complex distribution of stripped dark matter is predicted, may be more successful.

  1. FIELD LINES TWISTING IN A NOISY CORONA: IMPLICATIONS FOR ENERGY STORAGE AND RELEASE, AND INITIATION OF SOLAR ERUPTIONS

    SciTech Connect (OSTI)

    Rappazzo, A. F. [Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, DE 19716 (United States); Velli, M. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Einaudi, G., E-mail: rappazzo@udel.edu [Berkeley Research Associates, Inc., 6537 Mid Cities Avenue, Beltsville, MD 20705 (United States)

    2013-07-10T23:59:59.000Z

    We present simulations modeling closed regions of the solar corona threaded by a strong magnetic field where localized photospheric vortical motions twist the coronal field lines. The linear and nonlinear dynamics are investigated in the reduced magnetohydrodynamic regime in Cartesian geometry. Initially the magnetic field lines get twisted and the system becomes unstable to the internal kink mode, confirming and extending previous results. As typical in this kind of investigations, where initial conditions implement smooth fields and flux-tubes, we have neglected fluctuations and the fields are laminar until the instability sets in. However, previous investigations indicate that fluctuations, excited by photospheric motions and coronal dynamics, are naturally present at all scales in the coronal fields. Thus, in order to understand the effect of a photospheric vortex on a more realistic corona, we continue the simulations after kink instability sets in, when turbulent fluctuations have already developed in the corona. In the nonlinear stage the system never returns to the simple initial state with ordered twisted field lines, and kink instability does not occur again. Nevertheless, field lines get twisted, although in a disordered way, and energy accumulates at large scales through an inverse cascade. This energy can subsequently be released in micro-flares or larger flares, when interaction with neighboring structures occurs or via other mechanisms. The impact on coronal dynamics and coronal mass ejections initiation is discussed.

  2. Line profile and continuum variability in the very broad-line Seyfert galaxy Mrk 926

    E-Print Network [OSTI]

    Kollatschny, W

    2010-01-01T23:59:59.000Z

    We present results of an intensive spectroscopic variability campaign of the very broad-line Seyfert 1 galaxy Mrk 926. Our aim is to investigate the broad-line region (BLR) by studying the intensity and line profile variations of this galaxy on short timescales. High signal-to-noise ratio(S/N) spectra were taken with the 9.2m Hobby-Eberly Telescope (HET) in identical conditions during two observing campaigns in 2004 and 2005. After the spectral reduction and internal calibration we achieved a relative flux accuracy of better than 1\\%. The rms profiles of the very broad Balmer lines have shapes that differ from their mean line profiles, consisting of two inner (v $\\lesssim \\pm{}$ 6~000 km s$^{-1}$) and two outer (v $\\gtrsim \\pm{}$ 6~000 km s$^{-1}$) line components in addition to a central component (v $\\lesssim \\pm{}$ 600 km s$^{-1}$). These outer and inner line segments varied with different amplitudes during our campaign. The radius of the BLR is very small with an upper limit of 2~light-days for the H$\\bet...

  3. POWER GRID DYNAMICS: ENHANCING POWER SYSTEM OPERATION THROUGH PRONY ANALYSIS

    SciTech Connect (OSTI)

    Ray, C.; Huang, Z.

    2007-01-01T23:59:59.000Z

    Prony Analysis is a technique used to decompose a signal into a series consisting of weighted complex exponentials and promises to be an effi cient way of recognizing sensitive lines during faults in power systems such as the U.S. Power grid. Positive Sequence Load Flow (PSLF) was used to simulate the performance of a simple two-area-four-generator system and the reaction of the system during a line fault. The Dynamic System Identifi cation (DSI) Toolbox was used to perform Prony analysis and use modal information to identify key transmission lines for power fl ow adjustment to improve system damping. The success of the application of Prony analysis methods to the data obtained from PSLF is reported, and the key transmission line for adjustment is identifi ed. Future work will focus on larger systems and improving the current algorithms to deal with networks such as large portions of the Western Electricity Coordinating Council (WECC) power grid.

  4. Dynamics of structural priming 

    E-Print Network [OSTI]

    Malhotra, Gaurav

    2009-01-01T23:59:59.000Z

    for understanding various aspects of syntactic priming. Cognitive processes are modelled as dynamical systems that can change their behaviour when they process information. We use these dynamical systems to investigate how each episode of language comprehension...

  5. Categorical Introduction to Dynamical Systems Symbolic Dynamical Systems

    E-Print Network [OSTI]

    Kahng, Byung-Jay

    Categorical Introduction to Dynamical Systems Symbolic Dynamical Systems Symbolic Embedding Examples Results Embeddings in Symbolic Dynamical Systems Jonathan Jaquette Swarthmore College July 22, 2009 Jonathan Jaquette Embeddings in Symbolic Dynamical Systems #12;Categorical Introduction

  6. Dynamics of Carroll Particles

    E-Print Network [OSTI]

    Eric Bergshoeff; Joaquim Gomis; Giorgio Longhi

    2014-05-31T23:59:59.000Z

    We investigate particles whose dynamics is invariant under the Carroll group. Although a single free such Carroll particle has no non-trivial dynamics (`the Carroll particle does not move') we show that there exists non-trivial dynamics for a set of interacting Carroll particles. Furthermore, we gauge the Carroll algebra and couple the Carroll particle to these gauge fields. It turns out that for such a coupled system even a single Carroll particle can have non-trivial dynamics.

  7. A Relativistic Dynamical Collapse Model

    E-Print Network [OSTI]

    Philip Pearle

    2014-12-21T23:59:59.000Z

    A model is discussed where all operators are constructed from a quantum scalar field whose energy spectrum takes on all real values. The Schr\\"odinger picture wave function depends upon space and time coordinates for each particle, as well as an inexorably increasing evolution parameter $s$ which labels a foliation of space-like hypersurfaces. The model is constructed to be manifestly Lorentz invariant in the interaction picture. Free particle states and interactions are discussed in this framework. Then, the formalism of the CSL (Continuous Spontaneous Localization) theory of dynamical collapse is applied. The collapse-generating operator is chosen to to be the particle number space-time density. Unlike previous relativistically invariant models, the vacuum state is not excited. The collapse dynamics depends upon two parameters, a parameter $\\Lambda$ which represents the collapse rate/volume and a scale factor $\\ell$. A common example of collapse dynamics, involving a clump of matter in a superposition of two locations, is analyzed. The collapse rate is shown to be identical to that of non-relativistic CSL when the GRW-CSL choice of $\\ell=a=10^{-5}$cm, is made, along with $\\Lambda=\\lambda/a^{3}$ (GRW-CSL choice $\\lambda=10^{-16}s^{-1}$). However, it is also shown that the change of mass of a nucleon over the age of the universe is then unacceptably large. The case where $\\ell$ is the size of the universe is then considered. It is shown that the collapse behavior is satisfactory and the change of mass over the age of the universe is acceptably small, when $\\Lambda= \\lambda/\\ell a^{2}$.

  8. Bio 320 Ecology Fall 2010 Problem Set 5 1. Consider a metapopulation with the "internal colonization" dynamics of deme

    E-Print Network [OSTI]

    Caraco, Thomas

    of the colonization rate parameter c to the extinction rate parameter e? 3. Species 1 and 2 compete; community colonization" dynamics of deme initiation (colonization) and local extinction. Let pt represent the fraction the colonization rate parameter c = 0.1, and let the extinction rate parameter e = 0.02. Find the immigration-extinction

  9. 1996 Wholesale Power and Transmission Rate Schedules.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1996-10-01T23:59:59.000Z

    Bonneville Power Administration`s (BPA) 1996 Wholesale Power Rate Schedules, 1996 Ancillary Products and Services Rate Schedule, 1996 Transmission Rate Schedules, and General Rate Schedule Provisions, contained herein, were approved on an interim basis effective October 1, 1996. These rate schedules and provisions were approved by the Federal Energy Regulatory Commission (FERC), United States Department of Energy, in September 1996 (Docket Nos EF96-2011-000 and EF96f-2021-000). These rate schedules and General Rate Schedule Provisions were approved on a final basis by the FERC July 30, 1997, in Dept. of Energy--Bonneville Power Administration, Docket Nos. EF96-2011-000 and EF96-2021-000. Except as noted elsewhere, these 1996 rate schedules and provisions supersede BPA`s Wholesale Power Rate Schedules and General Rate Schedule Provisions, and Transmission Rate Schedules and General Transmission Rate Schedule Provisions, effective October 1, 1995. These rate schedules and general rate schedule provisions include all errata.

  10. Dynamics of Anisotropic Universes

    E-Print Network [OSTI]

    Jerome Perez

    2006-03-30T23:59:59.000Z

    We present a general study of the dynamical properties of Anisotropic Bianchi Universes in the context of Einstein General Relativity. Integrability results using Kovalevskaya exponents are reported and connected to general knowledge about Bianchi dynamics. Finally, dynamics toward singularity in Bianchi type VIII and IX universes are showed to be equivalent in some precise sence.

  11. Social Dynamics Introduction

    E-Print Network [OSTI]

    Barrett, Jeffrey A.

    Social Dynamics Introduction Part I: Correlation and the Social Contract Introduction to part I 1: University of Utah Press. 47-69. Part II: Importance of Dynamics Introduction to part II 1. Trust, Risk Significance of Some Simple Evolutionary Models (2000) Philosophy of Science 67: 94-113. 4. Dynamics

  12. Atmospheric Dynamics II Instructor

    E-Print Network [OSTI]

    AT602 Atmospheric Dynamics II 2 credits Instructor: David W. J. Thompson davet: An Introduction to Dynamic Meteorology, 5th Edition, Academic Press (recommended) · Marshall, J., and Plumb, R. A., 2008: Atmosphere, Ocean, and Climate Dynamics: An Introductory Text, Academic Press. · Vallis, G. K

  13. Intramolecular and nonlinear dynamics

    SciTech Connect (OSTI)

    Davis, M.J. [Argonne National Laboratory, IL (United States)

    1993-12-01T23:59:59.000Z

    Research in this program focuses on three interconnected areas. The first involves the study of intramolecular dynamics, particularly of highly excited systems. The second area involves the use of nonlinear dynamics as a tool for the study of molecular dynamics and complex kinetics. The third area is the study of the classical/quantum correspondence for highly excited systems, particularly systems exhibiting classical chaos.

  14. Cybersecurity Dynamics Shouhuai Xu

    E-Print Network [OSTI]

    Xu, Shouhuai

    Antonio ABSTRACT We explore the emerging field of Cybersecurity Dynamics, a candidate foundation been driving the study of security for decades -- the idea of cybersecurity dynamics emergedCybersecurity Dynamics Shouhuai Xu Department of Computer Science, University of Texas at San

  15. 17. METAPOPULATION DYNAMICS OF

    E-Print Network [OSTI]

    17. METAPOPULATION DYNAMICS OF INFECTIOUS DISEASES Matt J. Keeling, Ottar N. Bjørnstad, and Bryan T resonances for the dynamics of parasites. This is particularly true for microparasitic infections" growth of the parasite population. Thus, at the scale of the host popu- lation, infectious dynamics bears

  16. Drop dynamics on hydrophobic and superhydrophobic surfaces

    E-Print Network [OSTI]

    B. M. Mognetti; H. Kusumaatmaja; J. M. Yeomans

    2010-09-23T23:59:59.000Z

    We investigate the dynamics of micron-scale drops pushed across a hydrophobic or superhydrophobic surface. The velocity profile across the drop varies from quadratic to linear with increasing height, indicating a crossover from a sliding to a rolling motion. We identify a mesoscopic slip capillary number which depends only on the motion of the contact line and the shape of the drop, and show that the angular velocity of the rolling increases with increasing viscosity. For drops on superhydrophobic surfaces we argue that a tank treading advance from post to post replaces the diffusive relaxation that allows the contact line to move on smooth surfaces. Hence drops move on superhydrophobic surfaces more quickly than on smooth geometries.

  17. Effects of 'Limited Product Line Audits'

    E-Print Network [OSTI]

    Van Ormer, H.

    2006-01-01T23:59:59.000Z

    . This is higher than the normal quoted percentage and could be caused by improper adjustments. Estimated annual electrical energy operating cost at idle (not including loaded time) at $0.05 per kWh ((1,000 hp x .746 x 0.05 x 8,760 x .40) / .95 me) equals... 23% Lowest % 14 Highest % 48% Average Electric Rate $0.06/kWh Lowest rate $0.04/kWh Highest rate $0.09/kWh Third-party Incentives Obtained: Audit Cost 5...

  18. Slow dynamics and anomalous nonlinear fast dynamics in diverse solids

    E-Print Network [OSTI]

    Slow dynamics and anomalous nonlinear fast dynamics in diverse solids Paul Johnsona) Geophysics study of anomalous nonlinear fast dynamics and slow dynamics in a number of solids. Observations are presented from seven diverse materials showing that anomalous nonlinear fast dynamics ANFD and slow dynamics

  19. Proceedings of the ACM Sigmetrics Conference, May 1995. On-Line Extraction of SCSI Disk Drive Parameters

    E-Print Network [OSTI]

    Ganger, Greg

    Proceedings of the ACM Sigmetrics Conference, May 1995. On-Line Extraction of SCSI Disk Drive@hpl.hp.com Abstract Sophisticated disk scheduling algorithms require accu- rate, detailed disk drive speci cations for acquiring the necessary information from a SCSI disk drive. Using only the ANSI-standard interface, we

  20. Modeling the Dynamics of Compromised Networks

    SciTech Connect (OSTI)

    Soper, B; Merl, D M

    2011-09-12T23:59:59.000Z

    Accurate predictive models of compromised networks would contribute greatly to improving the effectiveness and efficiency of the detection and control of network attacks. Compartmental epidemiological models have been applied to modeling attack vectors such as viruses and worms. We extend the application of these models to capture a wider class of dynamics applicable to cyber security. By making basic assumptions regarding network topology we use multi-group epidemiological models and reaction rate kinetics to model the stochastic evolution of a compromised network. The Gillespie Algorithm is used to run simulations under a worst case scenario in which the intruder follows the basic connection rates of network traffic as a method of obfuscation.

  1. The Shapes of Atomic Lines from the Surfaces of Weakly Magnetic Rotating Neutron Stars and Their Implications

    E-Print Network [OSTI]

    Sudip Bhattacharyya; M. Coleman Miller; Frederick K. Lamb

    2006-06-26T23:59:59.000Z

    Motivated by the report by Cottam et al. (2002) of iron resonance scattering lines in the spectra of thermonuclear bursts from EXO 0748-676, we have investigated the information about neutron star structure and the geometry of the emission region that can be obtained by analyzing the profiles of atomic lines formed at the surface of the star. We have calculated the detailed profiles of such lines, taking into account the star's spin and the full effects of special and general relativity, including light-bending and frame-dragging. We discuss the line shapes produced by rotational Doppler broadening and magnetic splitting of atomic lines, for the spin rates and magnetic fields expected in neutron stars in low-mass X-ray binary systems. We show that narrow lines are possible even for rapidly spinning stars, if the emission region or the line of sight are close to the spin axis. For most neutron stars in low-mass systems, magnetic splitting is too small to obscure the effects of special and general relativity. We show that the ratio of the star's mass to its equatorial radius can be determined to within 5% using atomic line profiles, even if the lines are broad and skewed. This is the precision required to constrain strongly the equation of state of neutron star matter. We show further that if the radius and latitude of emission are known to ~ 5-10% accuracy, then frame-dragging has a potentially detectable effect on the profiles of atomic lines formed at the stellar surface.

  2. Multi-transmission-line-beam interactive system

    SciTech Connect (OSTI)

    Figotin, Alexander; Reyes, Guillermo [Department of Mathematics, University of California at Irvine, Irvine, California 92697-3875 (United States)] [Department of Mathematics, University of California at Irvine, Irvine, California 92697-3875 (United States)

    2013-11-15T23:59:59.000Z

    We construct here a Lagrangian field formulation for a system consisting of an electron beam interacting with a slow-wave structure modeled by a possibly non-uniform multiple transmission line (MTL). In the case of a single line we recover the linear model of a traveling wave tube due to J. R. Pierce. Since a properly chosen MTL can approximate a real waveguide structure with any desired accuracy, the proposed model can be used in particular for design optimization. Furthermore, the Lagrangian formulation provides: (i) a clear identification of the mathematical source of amplification, (ii) exact expressions for the conserved energy and its flux distributions obtained from the Noether theorem. In the case of uniform MTLs we carry out an exhaustive analysis of eigenmodes and find sharp conditions on the parameters of the system to provide for amplifying regimes.

  3. Giant vacuum forces via transmission lines

    E-Print Network [OSTI]

    Ephraim Shahmoon; Igor Mazets; Gershon Kurizki

    2014-07-23T23:59:59.000Z

    Quantum electromagnetic fluctuations induce forces between neutral particles, known as the van der Waals (vdW) and Casimir interactions. These fundamental forces, mediated by virtual photons from the vacuum, play an important role in basic physics and chemistry, and in emerging technologies involving, e.g. micro-electromechanical systems or quantum information processing. Here we show that these interactions can be enhanced by many orders of magnitude upon changing the character of the mediating vacuum-modes. By considering two polarizable particles in the vicinity of any standard electric transmission line, along which photons can propagate in one dimension (1d), we find a much stronger and longer-range interaction than in free-space. This enhancement may have profound implications on many-particle and bulk systems, and impact the quantum technologies mentioned above. The predicted giant vacuum force is estimated to be measurable in a coplanar waveguide line.

  4. Line-imaging Fabry-Perot interferometer

    SciTech Connect (OSTI)

    Mathews, A.R.; Warnes, R.H.; Hemsing, W.F.; Whittemore, G.R.

    1990-01-01T23:59:59.000Z

    A method for measuring the velocity history of a line element on a shock-loaded solid has been demonstrated. Light from single-frequency laser is focused through a cylindrical lens to a line on a moving target. The return Doppler-shifted image is passed through a Fabry-Perot interferometer. Because only specific combinations of incident light angle and frequency can pass through the interferometer the output is an incomplete image of the moving target appearing as a set of fringes. This image is focused onto an electronic streak camera and swept in time. The fringe pattern changes with time as the target surface moves, allowing determination of velocity for each point on the target that forms a fringe. Because the velocity can only be measured at the fringe positions, it is necessary to use an interpolating polynomial to obtain a continuous function of time and velocity along the sampled lien. 9 refs., 7 figs.

  5. In-line real time air monitor

    DOE Patents [OSTI]

    Wise, Marcus B. (Kingston, TN); Thompson, Cyril V. (Knoxville, TN)

    1998-01-01T23:59:59.000Z

    An in-line gas monitor capable of accurate gas composition analysis in a continuous real time manner even under strong applied vacuum conditions operates by mixing an air sample with helium forming a sample gas in two complementary sample loops embedded in a manifold which includes two pairs of 3-way solenoid valves. The sample gas is then analyzed in an ion trap mass spectrometer on a continuous basis. Two valve drivers actuate the two pairs of 3-way valves in a reciprocating fashion, so that there is always flow through the in-line gas monitor via one or the other of the sample loops. The duty cycle for the two pairs of 3-way valves is varied by tuning the two valve drivers to a duty cycle typically between 0.2 to 0.7 seconds.

  6. In-line real time air monitor

    DOE Patents [OSTI]

    Wise, M.B.; Thompson, C.V.

    1998-07-14T23:59:59.000Z

    An in-line gas monitor capable of accurate gas composition analysis in a continuous real time manner even under strong applied vacuum conditions operates by mixing an air sample with helium forming a sample gas in two complementary sample loops embedded in a manifold which includes two pairs of 3-way solenoid valves. The sample gas is then analyzed in an ion trap mass spectrometer on a continuous basis. Two valve drivers actuate the two pairs of 3-way valves in a reciprocating fashion, so that there is always flow through the in-line gas monitor via one or the other of the sample loops. The duty cycle for the two pairs of 3-way valves is varied by tuning the two valve drivers to a duty cycle typically between 0.2 to 0.7 seconds. 3 figs.

  7. Route Throughput Analysis with Spectral Reuse for Multi-Rate Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    networks (MANETs) have received a lot of attention for its flexible network architecture. While many network (MANET) is a flexible and dynamic architecture that is attractive due to its ease in network1 Route Throughput Analysis with Spectral Reuse for Multi-Rate Mobile Ad Hoc Networks Lien-Wu Chen

  8. A testing technique for concrete under confinement at high rates of strain P. Forquin1,

    E-Print Network [OSTI]

    1 A testing technique for concrete under confinement at high rates of strain P. Forquin1, , F://lmsX.polytechnique.fr/LMSX/ Abstract: A testing device is presented for the experimental study of dynamic compaction of concrete under numerical simulations of tests involving a set of 4 different concrete-like behaviours and different

  9. Optimal Blowup Rates for the Minimal Energy Null Control for the Structurally Damped Abstract Wave Equation

    E-Print Network [OSTI]

    , H is Hilbert. Therewith, we consider the structurally damped and controlled abstract model # v tt­like dynamics. For this model, we wish to consider the null controllability problem. This problem can be broadly for the norm of the ``minimal norm steering control'', as T # 0. In turn, it is known that the rate of blowup

  10. Optimal Blowup Rates for the Minimal Energy Null Control for the Structurally Damped Abstract Wave Equation

    E-Print Network [OSTI]

    , we consider the structurally damped and controlled abstract model vtt + °Av + °A vt = u on (0, T) [v) manifest parabolic-like dynamics. For this model, we wish to consider the null controllability problem for the norm of the "minimal norm steering control", as T 0. In turn, it is known that the rate of blowup

  11. Thermo-visco-elasticity with rate-independent plasticity in isotropic materials undergoing

    E-Print Network [OSTI]

    Bartels, Soeren

    Thermo-visco-elasticity with rate-independent plasticity in isotropic materials undergoing thermal effects. Numerical discretization of the thermo- dynamically consistent model is proposed by implicit time. These "thermo-elastic" stresses may trigger activated inelastic processes, typically slip plastic- ity or even

  12. Pleistocene ice and paleo-strain rates at Taylor Glacier, Antarctica S.M. Aciego a

    E-Print Network [OSTI]

    Severinghaus, Jeffrey P.

    Pleistocene ice and paleo-strain rates at Taylor Glacier, Antarctica S.M. Aciego a , K.M. Cuffey b September 2006 Abstract Ice exposed in ablation zones of ice sheets can be a valuable source of samples for paleoclimate studies and information about long-term ice dynamics. We report a 28-km long stable isotope

  13. Rate Adaptation and Base Station Reconfiguration for Battery Efficient Video Download

    E-Print Network [OSTI]

    Dey, Sujit

    dynamically depending on battery and buffer levels of the mobile device, the channel conditions experienced conditions so as to avoid stalling, and do not consider the effect of video download on mobile device batteryRate Adaptation and Base Station Reconfiguration for Battery Efficient Video Download Ranjini

  14. Simulating Vibrational Energy Flow in Proteins: Relaxation Rate and Mechanism for Heme Cooling in Cytochrome c

    E-Print Network [OSTI]

    Straub, John E.

    Simulating Vibrational Energy Flow in Proteins: Relaxation Rate and Mechanism for Heme Cooling dynamics simulation. The kinetic energy relaxation was found to be a biphasic exponential decay process in the heme protein myoglobin. Computer simulation of vibrational energy relaxation in heme proteins began

  15. Peeping at chaos: Nondestructive monitoring of chaotic systems by measuring long-time escape rates

    E-Print Network [OSTI]

    L. A. Bunimovich; C. P. Dettmann

    2007-09-17T23:59:59.000Z

    One or more small holes provide non-destructive windows to observe corresponding closed systems, for example by measuring long time escape rates of particles as a function of hole sizes and positions. To leading order the escape rate of chaotic systems is proportional to the hole size and independent of position. Here we give exact formulas for the subsequent terms, as sums of correlation functions; these depend on hole size and position, hence yield information on the closed system dynamics. Conversely, the theory can be readily applied to experimental design, for example to control escape rates.

  16. New Diagnostics in the FLASH Dump Line

    E-Print Network [OSTI]

    Line Status Aug. 2009 BPM 9DUMP BPM 15DUMP BPM 5DUMP Toroid 9DUMP OTR screen 9DUMP BLM 14DUMP BLM 13 at the dump #12;N. Baboi, MDIN. Baboi, MDI FLASH Seminar, Dec. 1, 2009FLASH Seminar, Dec. 1, 2009 Old BPM 15DUMPOld BPM 15DUMP ·Strange behavior of BPM signals measured impedance from end of cable (in bld. 49): L

  17. Straight-line separation of two polyhedra

    E-Print Network [OSTI]

    Wang, Su-Hua

    1992-01-01T23:59:59.000Z

    1992 ABSTRACT Straight-line Separation of Two Polyhedra. (December 1992) Su-Hua Wang, B. S. , National Chiao Tung University, Taiwan, R. O. C Chair of Advisory Committee: Dr. Jan Wolter The development of automated assembly planning systems has... INTRODUCTION I. A Context Assembly planning is the plan generation problem for assembly tasks and plays an important role in manufacturing systems. The goal of the assembly planning process is to find a plan for moving a set of parts which are initially...

  18. 2012 Wholesale Power and Transmission Rate

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the meaning given such term in section 3.3.5. "COU Parties' PF Rate" means any BPA wholesale power rate for service to COUs' "general requirements" (as defined in section...

  19. ON THE RELATIONSHIP BETWEEN CONVERGENCE RATES OF ...

    E-Print Network [OSTI]

    Q-rates in terms of the di erential properties of v and in terms of the ... schemes of this kind is to assure that they converge at a provably fast rate to a point.

  20. Energy Efficiency Interest Rate Reduction Program

    Broader source: Energy.gov [DOE]

    The Alaska Housing Finance Corporation (AHFC) offers interest rate reductions to home buyers purchasing new and existing homes with 5 Star and 5 Star Plus energy ratings. All homes constructed on...