National Library of Energy BETA

Sample records for tp4 range distance

  1. B73 : Filtrage bayesien et approximation particulaire TP 4 : Navigation d'un robot mobile

    E-Print Network [OSTI]

    LeGland, François

    B7­3 : Filtrage bay´esien et approximation particulaire TP 4 : Navigation d'un robot mobile lundi 15 octobre 2007 Un robot mobile se d´eplace `a l'int´erieur d'un b^atiment dont le plan est],transpose(map)); hold on; colormap('gray'); axis xy; axis off; Figure 1: Plan(s) du b^atiment Le robot est rep

  2. On chemical distances and shape theorems in percolation models with long-range correlations

    SciTech Connect (OSTI)

    Drewitz, Alexander; Rth, Balzs; Sapozhnikov, Artm

    2014-08-01

    In this paper, we provide general conditions on a one parameter family of random infinite subsets of Z{sup d} to contain a unique infinite connected component for which the chemical distances are comparable to the Euclidean distance. In addition, we show that these conditions also imply a shape theorem for the corresponding infinite connected component. By verifying these conditions for specific models, we obtain novel results about the structure of the infinite connected component of the vacant set of random interlacements and the level sets of the Gaussian free field. As a byproduct, we obtain alternative proofs to the corresponding results for random interlacements in the work of Cern and Popov [On the internal distance in the interlacement set, Electron. J. Probab. 17(29), 125 (2012)], and while our main interest is in percolation models with long-range correlations, we also recover results in the spirit of the work of Antal and Pisztora [On the chemical distance for supercritical Bernoulli percolation, Ann Probab. 24(2), 10361048 (1996)] for Bernoulli percolation. Finally, as a corollary, we derive new results about the (chemical) diameter of the largest connected component in the complement of the trace of the random walk on the torus.

  3. Effect Of Platooning on Fuel Consumption of Class 8 Vehicles Over a Range of Speeds, Following Distances, and Mass

    SciTech Connect (OSTI)

    Lammert, M. P.; Duran, A.; Diez, J.; Burton, K.; Nicholson, A.

    2014-10-01

    This research project evaluates fuel consumption results of two Class 8 tractor-trailer combinations platooned together compared to their standalone fuel consumption. A series of ten modified SAE Type II J1321 fuel consumption track tests were performed to document fuel consumption of two platooned vehicles and a control vehicle at varying steady-state speeds, following distances, and gross vehicle weights (GVWs). The steady-state speeds ranged from 55 mph to 70 mph, the following distances ranged from a 20-ft following distance to a 75-ft following distance, and the GVWs were 65K lbs and 80K lbs. All tractors involved had U.S. Environmental Protection Agency (EPA) SmartWay-compliant aerodynamics packages installed, and the trailers were equipped with side skirts. Effects of vehicle speed, following distance, and GVW on fuel consumption were observed and analyzed. The platooning demonstration system used in this study consisted of radar systems, Dedicated Short-Range Communication (DSRC) vehicle-to-vehicle (V2V) communications, vehicle braking and torque control interface, cameras and driver displays. The lead tractor consistently demonstrated an improvement in average fuel consumption reduction as following distance decreased, with results showing 2.7% to 5.3% fuel savings at a GVW of 65k. The trailing vehicle achieved fuel consumption savings ranging from 2.8% to 9.7%; tests during which the engine cooling fan did not operate achieved savings of 8.4% to 9.7%. 'Team' fuel savings, considering the platooned vehicles as one, ranged from 3.7% to 6.4%, with the best combined result being for 55 mph, 30-ft following distance, and 65k GVW.

  4. A novel variable-distance antenna test range and high spatial resolution corroboration of the inverse square law for 433.5 MHz radiation

    E-Print Network [OSTI]

    de Han, Christoph; Erhardt, Matthias

    2015-01-01

    A novel, low-budget, open-air, slant-geometry antenna test range for UHF radiation is presented. It was designed primarily to facilitate variation of the distance between emitter and receiver antennas, but has also the potential for adaptation to simultaneous variation of distance and receiver antenna orientation. In support of the validity of the range the inverse square law for 433.5 MHz radiation between two naked half-wave dipole antennas was tested with high spatial resolution from close to the far field limit outward to 46 wavelengths. Sine amplitude input voltage at the receiver antenna varied with the distance to the power -0.9970 +/- 0.0051 (R^2 = 0.992), thus corroborating the inverse square law for transmission power at the lowest frequency for which thus far data have been published. Keywords: inverse square law; dipole antenna; test facility; electromagnetic propagation; UHF measurements; distance dependence.

  5. Light beam range finder

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01

    A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.

  6. Light beam range finder

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-16

    A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.

  7. Distance-based accessibility indices

    E-Print Network [OSTI]

    Csat, Lszl

    2015-01-01

    The paper attempts to develop a suitable accessibility index for networks where each link has a value such that a smaller number is preferred like distance, cost, or travel time. A measure called distance sum is characterized by three independent properties: anonymity, an appropriately chosen independence axiom, and dominance preservation, which requires that a node not far to any other is at least as accessible. We argue for the need of eliminating the independence property in certain applications. Therefore generalized distance sum, a family of accessibility indices, will be suggested. It is linear, considers the accessibility of vertices besides their distances and depends on a parameter in order to control its deviation from distance sum. Generalized distance sum is anonymous and satisfies dominance preservation if its parameter meets a sufficient condition. Two detailed examples demonstrate its ability to reflect the vulnerability of accessibility to link disruptions.

  8. Efficient long distance quantum communication

    E-Print Network [OSTI]

    Sreraman Muralidharan; Linshu Li; Jungsang Kim; Norbert Ltkenhaus; Mikhail D. Lukin; Liang Jiang

    2015-09-28

    Despite the tremendous progress of quantum cryptography, efficient quantum communication over long distances (>1000km) remains an outstanding challenge due to fiber attenuation and operation errors accumulated over the entire communication distance. Quantum repeaters, as a promising approach, can overcome both photon loss and operation errors, and hence significantly speedup the communication rate. Depending on the methods used to correct loss and operation errors, all the proposed QR schemes can be classified into three categories (generations). Here we present the first systematic comparison of three generations of quantum repeaters by evaluating the cost of both temporal and physical resources, and identify the optimized quantum repeater architecture for a given set of experimental parameters. Our work provides a roadmap for the experimental realizations of highly efficient quantum networks over transcontinental distances.

  9. Long working distance interference microscope

    DOE Patents [OSTI]

    Sinclair, Michael B.; DeBoer, Maarten P.; Smith, Norman F.

    2004-04-13

    Disclosed is a long working distance interference microscope suitable for three-dimensional imaging and metrology of MEMS devices and test structures on a standard microelectronics probe station. The long working distance of 10-30 mm allows standard probes or probe cards to be used. This enables nanometer-scale 3-D height profiles of MEMS test structures to be acquired across an entire wafer. A well-matched pair of reference/sample objectives is not required, significantly reducing the cost of this microscope, as compared to a Linnik microinterferometer.

  10. Compact range for variable-zone measurements

    DOE Patents [OSTI]

    Burnside, Walter D. (Columbus, OH); Rudduck, Roger C. (Columbus, OH); Yu, Jiunn S. (Albuquerque, NM)

    1988-01-01

    A compact range for testing antennas or radar targets includes a source for directing energy along a feedline toward a parabolic reflector. The reflected wave is a spherical wave with a radius dependent on the distance of the source from the focal point of the reflector.

  11. Distance Probes of Dark Energy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kim, A. G.; Padmanabhan, N.; Aldering, G.; Allen, S. W.; Baltay, C.; Cahn, R. N.; D' Andrea, C. B.; Dalal, N.; Dawson, K. S.; Denney, K. D.; et al

    2015-03-15

    We present the results from the Distances subgroup of the Cosmic Frontier Community Planning Study (Snowmass 2013). This document summarizes the current state of the field as well as future prospects and challenges. In addition to the established probes using Type Ia supernovae and baryon acoustic oscillations, we also consider prospective methods based on clusters, active galactic nuclei, gravitational wave sirens and strong lensing time delays.

  12. RANGE-ENERGY TABLES

    E-Print Network [OSTI]

    Rich, Marvin

    2010-01-01

    Particles. II. PROTON RANGE-ENERGY DATA Stopping Medium: Be2301 III. PION RANGE-ENERGY DATA Mev. Pion Kinetic Energy2301 IV. DEUTERON RANGE-ENERGY DATA Deuteron Kinetic Energy

  13. Neutron scattering and extra short range interactions

    E-Print Network [OSTI]

    V. V. Nesvizhevsky; G. Pignol; K. V. Protasov

    2007-11-14

    The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5 nm. This distance range occupies an intermediate space between collider searches for strongly coupled heavy bosons and searches for new weak macroscopic forces. We emphasise the reliability of the neutron constraints in so far as they provide several independent strategies. We have identified the most promising way to improve them.

  14. Metrics and methods for social distance

    E-Print Network [OSTI]

    Andris, Clio

    2011-01-01

    Distance measures are important for scientists because they illustrate the dynamics of geospatial topologies for physical and social processes. Two major types of distance are generally used for this purpose: Euclidean ...

  15. An RFID Distance Bounding Gerhard P. Hancke and Markus G. Kuhn

    E-Print Network [OSTI]

    Hancke, Gerhard

    range Used to link an item or person to a location An RFID Distance Bounding Protocol p. #12;Relay application layer security protocols An RFID Distance Bounding Protocol p. #12;Relay attack demonstration Proxy Token 14443 A/B test card circuit Signal processing with discrete components Duplex RF link Proxy

  16. ON PULSAR DISTANCE MEASUREMENTS AND THEIR UNCERTAINTIES

    SciTech Connect (OSTI)

    Verbiest, J. P. W.; Lee, K. J. [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, 53121 Bonn (Germany); Weisberg, J. M.; Chael, A. A. [Department of Physics and Astronomy, Carleton College, Northfield, MN 55057 (United States); Lorimer, D. R. [Department of Physics, West Virginia University, Morgantown, WV 26506 (United States)

    2012-08-10

    Accurate distances to pulsars can be used for a variety of studies of the Galaxy and its electron content. However, most distance measures to pulsars have been derived from the absorption (or lack thereof) of pulsar emission by Galactic H I gas, which typically implies that only upper or lower limits on the pulsar distance are available. We present a critical analysis of all measured H I distance limits to pulsars and other neutron stars, and translate these limits into actual distance estimates through a likelihood analysis that simultaneously corrects for statistical biases. We also apply this analysis to parallax measurements of pulsars in order to obtain accurate distance estimates and find that the parallax and H I distance measurements are biased in different ways, because of differences in the sampled populations. Parallax measurements typically underestimate a pulsar's distance because of the limited distance to which this technique works and the consequential strong effect of the Galactic pulsar distribution (i.e., the original Lutz-Kelker bias), in H I distance limits, however, the luminosity bias dominates the Lutz-Kelker effect, leading to overestimated distances because the bright pulsars on which this technique is applicable are more likely to be nearby given their brightness.

  17. Distance determinations to shield galaxies from Hubble space telescope imaging

    SciTech Connect (OSTI)

    McQuinn, Kristen B. W.; Skillman, Evan D. [Minnesota Institute for Astrophysics, School of Physics and Astronomy, University of Minnesota, 116 Church Street, S.E., Minneapolis, MN 55455 (United States); Cannon, John M.; Cave, Ian [Department of Physics and Astronomy, Macalester College, 1600 Grand Avenue, Saint Paul, MN 55105 (United States); Dolphin, Andrew E. [Raytheon Company, 1151 E. Hermans Road, Tucson, AZ 85756 (United States); Salzer, John J. [Department of Astronomy, Indiana University, 727 East 3rd Street, Bloomington, IN 47405 (United States); Haynes, Martha P.; Adams, Elizabeth; Giovanelli, Riccardo [Center for Radiophysics and Space Research, Space Sciences Building, Cornell University, Ithaca, NY 14853 (United States); Elson, Ed C. [Astrophysics, Cosmology and Gravity Centre (ACGC), Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701 (South Africa); Ott, Jurgen [National Radio Astronomy Observatory, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801 (United States); Saintonge, Amlie, E-mail: kmcquinn@astro.umn.edu [Max-Planck-Institute for Astrophysics, D-85741 Garching (Germany)

    2014-04-10

    The Survey of H I in Extremely Low-mass Dwarf (SHIELD) galaxies is an ongoing multi-wavelength program to characterize the gas, star formation, and evolution in gas-rich, very low-mass galaxies. The galaxies were selected from the first ?10% of the H I Arecibo Legacy Fast ALFA (ALFALFA) survey based on their inferred low H I mass and low baryonic mass, and all systems have recent star formation. Thus, the SHIELD sample probes the faint end of the galaxy luminosity function for star-forming galaxies. Here, we measure the distances to the 12 SHIELD galaxies to be between 5 and 12 Mpc by applying the tip of the red giant method to the resolved stellar populations imaged by the Hubble Space Telescope. Based on these distances, the H I masses in the sample range from 4 10{sup 6} to 6 10{sup 7} M {sub ?}, with a median H I mass of 1 10{sup 7} M {sub ?}. The tip of the red giant branch distances are up to 73% farther than flow-model estimates in the ALFALFA catalog. Because of the relatively large uncertainties of flow-model distances, we are biased toward selecting galaxies from the ALFALFA catalog where the flow model underestimates the true distances. The measured distances allow for an assessment of the native environments around the sample members. Five of the galaxies are part of the NGC 672 and NGC 784 groups, which together constitute a single structure. One galaxy is part of a larger linear ensemble of nine systems that stretches 1.6 Mpc from end to end. Three galaxies reside in regions with 1-9 neighbors, and four galaxies are truly isolated with no known system identified within a radius of 1 Mpc.

  18. Formation distance Stphanie Jean-Daubias

    E-Print Network [OSTI]

    Jean-Daubias, Stéphanie

    ) dans le temps et dans l'espace de l'apprenant et de l'équipe professorale 3 #12;Deux types de médias en;Formation à distance et espace Plusieurs variantes possibles enseignement entièrement à distance

  19. Distance Education Graduate Program in Environmental Science

    E-Print Network [OSTI]

    Ma, Lena

    Distance Education Graduate Program in Environmental Science Soil & Water ScienceSoil & Water (Environmental Science Track). Courses are offered via distance education to accommodate place-bound students and educational opportunities for students seeking careers in soil and water science in land and water resource

  20. Short distance physics with heavy quark potentials

    E-Print Network [OSTI]

    Zantow, F; Karsch, Frithjof; Petreczky, P

    2002-01-01

    We present lattice studies of heavy quark potentials in the quenched approximation of QCD at finite temperatures. Both, the color singlet and color averaged potentials are calculated. While the potentials are well known at large distances, we give a detailed analysis of their short distance behavior (from 0.015 fm to 1 fm) near the critical temperature. At these distances we expect that the T-dependent potentials go over into the zero temperature potential. Indeed, we find evidences that the temperature influence gets suppressed and the potentials starts to become a unique function of the underlying distance scale. We use this feature to normalize the heavy quark potentials at short distances and extract the free energy of the quark system in a gluonic heat bath.

  1. National Wind Distance Learning Collaborative

    SciTech Connect (OSTI)

    Dr. James B. Beddow

    2013-03-29

    Executive Summary The energy development assumptions identified in the Department of Energy's position paper, 20% Wind Energy by 2030, projected an exploding demand for wind energy-related workforce development. These primary assumptions drove a secondary set of assumptions that early stage wind industry workforce development and training paradigms would need to undergo significant change if the workforce needs were to be met. The current training practice and culture within the wind industry is driven by a relatively small number of experts with deep field experience and knowledge. The current training methodology is dominated by face-to-face, classroom based, instructor present training. Given these assumptions and learning paradigms, the purpose of the National Wind Distance Learning Collaborative was to determine the feasibility of developing online learning strategies and products focused on training wind technicians. The initial project scope centered on (1) identifying resources that would be needed for development of subject matter and course design/delivery strategies for industry-based (non-academic) training, and (2) development of an appropriate Learning Management System (LMS). As the project unfolded, the initial scope was expanded to include development of learning products and the addition of an academic-based training partner. The core partners included two training entities, industry-based Airstreams Renewables and academic-based Lake Area Technical Institute. A third partner, Vision Video Interactive, Inc. provided technology-based learning platforms (hardware and software). The revised scope yielded an expanded set of results beyond the initial expectation. Eight learning modules were developed for the industry-based Electrical Safety course. These modules were subsequently redesigned and repurposed for test application in an academic setting. Software and hardware developments during the project's timeframe enabled redesign providing for student access through the use of tablet devices such as iPads. Early prototype Learning Management Systems (LMS) featuring more student-centric access and interfaces with emerging social media were developed and utilized during the testing applications. The project also produced soft results involving cross learning between and among the partners regarding subject matter expertise, online learning pedagogy, and eLearning technology-based platforms. The partners believe that the most significant, overarching accomplishment of the project was the development and implementation of goals, activities, and outcomes that significantly exceeded those proposed in the initial grant application submitted in 2009. Key specific accomplishments include: (1) development of a set of 8 online learning modules addressing electrical safety as it relates to the work of wind technicians; (3) development of a flexible, open-ended Learning Management System (LMS): (3) creation of a robust body of learning (knowledge, experience, skills, and relationships). Project leaders have concluded that there is substantial resource equity that could be leverage and recommend that it be carried forward to pursue a Next Stage Opportunity relating to development of an online core curriculum for institute and community college energy workforce development programs.

  2. Electrical probe diagnostics for the laminar flame quenching distance

    SciTech Connect (OSTI)

    Karrer, Maxime; Makarov, Maxime; Bellenoue, Marc; Labuda, Sergei; Sotton, Julien

    2010-02-15

    A simplified theory, previously developed for the general case of weakly ionized gas flow, is used to predict electrical probe response when the flame is quenched on the probe surface. This theory is based on the planar model of space charge sheaths around the measuring electrode. For the flame quenching case, by assuming that the sheath thickness is comparable with the thermal boundary layer thickness, probe current can be related to flame quenching distance. The theoretical assumptions made to obtain the analytical formulation of probe current were experimentally proved by using direct visualization and high-frequency PIV. The direct visualization method was also used to validate the results of flame quenching distance values obtained with electrical probe. The electrical probe diagnostics have been verified for both head-on and sidewall flame quenching regimes and for stoichiometric methane/air and propane/air mixtures in a pressure range of 0.05-0.6 MPa. (author)

  3. Distance-redshift relations in an anisotropic cosmological model

    SciTech Connect (OSTI)

    Menezes, R. S. Jr. [Instituto Federal da Bahia, Salvador, BA (Brazil); Pigozzo, C.; Carneiro, S., E-mail: rsmjr@ifba.edu.br, E-mail: cpigozzo@ufba.br, E-mail: saulo.carneiro.ufba@gmail.com [Instituto de Fsica, Universidade Federal da Bahia, Salvador, Bahia (Brazil)

    2013-03-01

    In this paper we study an anisotropic model generated from a particular Bianchi type-III metric, which is a generalization of Gdel's metric and an exact solution of Einstein's field equations. We analyse type Ia supernova data, namely the SDSS sample calibrated with the MLCS2k2 fitter, and we verify in which ranges of distances and redshifts the anisotropy could be observed. We also consider, in a joint analysis, the position of the first peak in the CMB anisotropy spectrum, as well as current observational constraints on the Hubble constant. We conclude that a small anisotropy is permitted by the data, and that more accurate measurements of supernova distances above z = 2 might indicate the existence of such anisotropy in the universe.

  4. Observational evidence for travelling wave modes bearing distance proportional shifts

    E-Print Network [OSTI]

    Guruprasad, V

    2015-01-01

    Discrepancies of range between the Space Surveillance Network radars and the Deep Space Network in tracking the 1998 earth flyby of NEAR, and between ESA's Doppler and range data in Rosetta's 2009 flyby, reveal a consistent excess delay, or lag, equal to instantaneous one-way travel time in the telemetry signals. These lags readily explain all details of the flyby anomaly, and are shown to be symptoms of chirp d'Alembertian travelling wave solutions, relating to traditional sinusoidal waves by a rotation of the spectral decomposition due to the clock acceleration caused by the Doppler rates during the flybys. The lags thus relate to special relativity, but yield distance proportional shifts like those of cosmology at short range.

  5. Observational evidence for travelling wave modes bearing distance proportional shifts

    E-Print Network [OSTI]

    V. Guruprasad

    2015-07-18

    Discrepancies of range between the Space Surveillance Network radars and the Deep Space Network in tracking the 1998 earth flyby of NEAR, and between ESA's Doppler and range data in Rosetta's 2009 flyby, reveal a consistent excess delay, or lag, equal to instantaneous one-way travel time in the telemetry signals. These lags readily explain all details of the flyby anomaly, and are shown to be symptoms of chirp d'Alembertian travelling wave solutions, relating to traditional sinusoidal waves by a rotation of the spectral decomposition due to the clock acceleration caused by the Doppler rates during the flybys. The lags thus relate to special relativity, but yield distance proportional shifts like those of cosmology at short range.

  6. RANGE-ENERGY TABLES

    E-Print Network [OSTI]

    Rich, Marvin

    2010-01-01

    Mev gm/ era Mev gm/crn" Mev-cnf/gm 5. 817 x 10" 1. 685 x 10"2301 RANGE OF DEUTERONS IN CARBON J T Mev R gm/cm - dT "dTi T Mev R gm/cm - dT dF Mev- Mev-cn^gm cm/gm 5. 517 x lu" 3.

  7. Case study: copyright issues in distance education

    E-Print Network [OSTI]

    Huddleston, Michael B

    2006-10-30

    Over the years, much attention has been given to copyright law in literature and as it pertains to textbooks and other original academic works. However, as the focus is narrowed to the copyright law as it relates to distance ...

  8. Gamma ray burst distances and the timescape cosmology

    E-Print Network [OSTI]

    Peter R. Smale

    2011-08-22

    Gamma ray bursts can potentially be used as distance indicators, providing the possibility of extending the Hubble diagram to redshifts ~7. Here we follow the analysis of Schaefer (2007), with the aim of distinguishing the timescape cosmological model from the \\LambdaCDM model by means of the additional leverage provided by GRBs in the range 2 < z < 7. We find that the timescape model fits the GRB sample slightly better than the \\LambdaCDM model, but that the systematic uncertainties are still too little understood to distinguish the models.

  9. A short working distance multiple crystal x-ray spectrometer

    SciTech Connect (OSTI)

    Dickinson, B.; Seidler, G. T.; Webb, Z. W.; Bradley, J. A.; Nagle, K. P. [Department of Physics, University of Washington, Seattle, Washington 98195 (United States); Heald, S. M. [Advanced Photon Source, Argonne National Laboratories, Argonne, Illinois 60439 (United States); Gordon, R. A. [Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6 (Canada); Chou, I. M. [U.S. Geological Survey, Reston, Virginia 20192 (United States)

    2008-12-15

    For x-ray spot sizes of a few tens of microns or smaller, a millimeter-sized flat analyzer crystal placed {approx}1 cm from the sample will exhibit high energy resolution while subtending a collection solid angle comparable to that of a typical spherically bent crystal analyzer (SBCA) at much larger working distances. Based on this observation and a nonfocusing geometry for the analyzer optic, we have constructed and tested a short working distance (SWD) multicrystal x-ray spectrometer. This prototype instrument has a maximum effective collection solid angle of 0.14 sr, comparable to that of 17 SBCA at 1 m working distance. We find good agreement with prior work for measurements of the Mn K{beta} x-ray emission and resonant inelastic x-ray scattering for MnO, and also for measurements of the x-ray absorption near-edge structure for Dy metal using L{alpha}{sub 2} partial-fluorescence yield detection. We discuss future applications at third- and fourth-generation light sources. For concentrated samples, the extremely large collection angle of SWD spectrometers will permit collection of high-resolution x-ray emission spectra with a single pulse of the Linac Coherent Light Source. The range of applications of SWD spectrometers and traditional multi-SBCA instruments has some overlap, but also is significantly complementary.

  10. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, S.H.

    1988-03-10

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are colliminated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. 1 fig.

  11. Long Range Development Plan

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E CChinaC L S CLogin HelpLoisLong Range

  12. Wide range radioactive gas concentration detector

    DOE Patents [OSTI]

    Anderson, David F. (Los Alamos, NM)

    1984-01-01

    A wide range radioactive gas concentration detector and monitor which is capable of measuring radioactive gas concentrations over a range of eight orders of magnitude. The device of the present invention is designed to have an ionization chamber which is sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  13. Impact of receptor-ligand distance on adhesion cluster stability

    E-Print Network [OSTI]

    T. Erdmann; U. S. Schwarz

    2007-07-16

    Cells in multicellular organisms adhere to the extracellular matrix through two-dimensional clusters spanning a size range from very few to thousands of adhesion bonds. For many common receptor-ligand systems, the ligands are tethered to a surface via polymeric spacers with finite binding range, thus adhesion cluster stability crucially depends on receptor-ligand distance. We introduce a one-step master equation which incorporates the effect of cooperative binding through a finite number of polymeric ligand tethers. We also derive Fokker-Planck and mean field equations as continuum limits of the master equation. Polymers are modeled either as harmonic springs or as worm-like chains. In both cases, we find bistability between bound and unbound states for intermediate values of receptor-ligand distance and calculate the corresponding switching times. For small cluster sizes, stochastic effects destabilize the clusters at large separation, as shown by a detailed analysis of the stochastic potential resulting from the Fokker-Planck equation.

  14. Distance Duality Relation from Strong Gravitational Lensing

    E-Print Network [OSTI]

    Liao, Kai; Cao, Shuo; Biesiada, Marek; Zheng, Xiaogang; Zhu, Zong-Hong

    2015-01-01

    Under very general assumptions of metric theory of spacetime, photons traveling along null geodesics and photon number conservation, two observable concepts of cosmic distance, i.e. the angular diameter and the luminosity distances are related to each other by the so called distance duality relation (DDR) $D^L=D^A(1+z)^2$. Observational validation of this relation is quite important because any evidence of its violation could be a signal of new physics. In this letter we introduce a new method to test DDR based on strong gravitational lensing systems and supernovae Ia. Using a new compilation of strong lensing systems and JLA compilation of SNe Ia we found no evidence of DDR violation. However, not so much the final result but the method itself is worth attention, because unlike previously proposed techniques, it does not depend on prior assumptions concerning the details of cosmological model and galaxy cluster modelling.

  15. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, Stephen H. (East Syracuse, NY)

    1989-06-06

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are collimnated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. The computer solves the following equation in the analysis: ##EQU1## where: N(x).DELTA.x=the number of neutron interactions measured between a position x and x+.DELTA.x, A.sub.i (E.sub.i).DELTA.E.sub.i =the number of incident neutrons with energy between E.sub.i and E.sub.i +.DELTA.E.sub.i, and C=C(E.sub.i)=N .sigma.(E.sub.i) where N=the number density of absorbing atoms in the position sensitive counter means and .sigma. (E.sub.i)=the average cross section of the absorbing interaction between E.sub.i and E.sub.i +.DELTA.E.sub.i.

  16. Range gating experiments through a scattering media

    SciTech Connect (OSTI)

    Payton, J.; Cverna, F.; Gallegos, R.; McDonald, T.; Numkena, D.; Obst, A.; Pena-Abeyta, C.; Yates, G.

    1998-12-31

    This paper discusses range-gated imaging experiments performed recently at Redstone Arsenal in Huntsville, Alabama. Range gating is an imaging technique that uses a pulsed laser and gated camera to image objects at specific ranges. The technique can be used for imaging through scattering media such as dense smoke or fog. Range gating uses the fact that light travels at 3 x 10{sup 8} m/s. Knowing the speed of light the authors can calculate the time it will take the laser light to travel a known distance, then gate open a Micro Channel Plate Image Intensifier (MCPII) at the time the reflected light returns from the target. In the Redstone experiment the gate width on the MCPII was set to equal the laser pulse width ({approximately} 8 ns) for the highest signal to noise ratio. The gate allows the light reflected form the target and a small portion of the light reflected from the smoke in the vicinity of the target to be imaged. They obtained good results in light and medium smoke but the laser they were used did not have sufficient intensity to penetrate the thickest smoke. They did not diverge the laser beam to cover the entire target in order to maintain a high flux that would achieve better penetration through the smoke. They were able to image an Armored Personnel Carrier (APC) through light and medium smoke but they were not able to image the APC through heavy smoke. The experiment and results are presented.

  17. The Library for Distance Learners: Engineering

    E-Print Network [OSTI]

    Rzepa, Henry S.

    The Library for Distance Learners: Engineering Joining the Library You need your Library card to enter the Library building; to borrow and renew books; to use the Library's photocopying and printing facilities; and to use the Inter-Library Loans and Bath Copies services. All of the Library's electronic

  18. Structural Alignment Using the Generalized Euclidean Distance

    E-Print Network [OSTI]

    Plotkin, Steven S.

    : 32173228, 2009 Key words: protein folding; structural alignment; RMSD; MRSD; generalized distance configurations, and the so-called thermodynamic hypothesis in protein folding was born. This discovery underpinned the formalism that developed decades later to understand protein folding as a configurational

  19. PREPARING THE VIRTUAL CLASSROOM FOR DISTANCE DELIVERY

    E-Print Network [OSTI]

    Dyer, Bill

    of humans and their companion domestic animals and livestock. Students learn that there are certain "at riskPREPARING THE VIRTUAL CLASSROOM FOR DISTANCE DELIVERY: MEDICAL-VETERINARY ENTOMOLOGY CLINICS laboratory," library materials, conventional lectures and the 43 virtual patients in the clinics

  20. Relevance Weighting Using Distance Between Term Occurrences David Hawking

    E-Print Network [OSTI]

    Hawking, David

    authors. 1 #12;Abstract Recent work has achieved promising retrieval performance using distance between

  1. Scaling relationships between bed load volumes, transport distances, and stream power

    E-Print Network [OSTI]

    Kirchner, James W.

    approximate power law scaling with both the peak stream power and the cumulative stream energy of individual stream energy and ranged up to 0.57 m in the Erlenbach, broadly consistent with independent measurementsScaling relationships between bed load volumes, transport distances, and stream power in steep

  2. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Earl, Dennis D. (Knoxville, TN); Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Sanders, Alvin J. (Knoxville, TN)

    2002-09-24

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through a screen at least partially opaque at the wavelength. The screen has an aperture sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector spaced some distance from the screen. The detector detects the central intensity of the beam as well as a set of intensities displaced from a center of the aperture. The distance from the source to the target can then be calculated based upon the known wavelength, aperture radius, and beam intensity.

  3. Tunnel and Subsurface Void Detection and Range to Target Measurement

    SciTech Connect (OSTI)

    Phillip B. West

    2009-06-01

    Engineers and technicians at the Idaho National Laboratory invented, designed, built and tested a device capable of detecting and measuring the distance to, an underground void, or tunnel. Preliminary tests demonstrated positive detection of, and range to, a void thru as much as 30 meters of top-soil earth. Device uses acoustic driving point impedance principles pioneered by the Laboratory for well-bore physical properties logging. Data receipts recorded by the device indicates constructive-destructive interference patterns characteristic of acoustic wave reflection from a downward step-change in impedance mismatch. Prototype tests demonstrated that interference patterns in receipt waves could depict the patterns indicative of specific distances. A tool with this capability can quickly (in seconds) indicate the presence and depth/distance of a void or tunnel. Using such a device, border security and military personnel can identify threats of intrusion or weapons caches in most all soil conditions including moist and rocky.

  4. Long working distance incoherent interference microscope

    DOE Patents [OSTI]

    Sinclair, Michael B. (Albuquerque, NM); De Boer, Maarten P. (Albuquerque, NM)

    2006-04-25

    A full-field imaging, long working distance, incoherent interference microscope suitable for three-dimensional imaging and metrology of MEMS devices and test structures on a standard microelectronics probe station. A long working distance greater than 10 mm allows standard probes or probe cards to be used. This enables nanometer-scale 3-dimensional height profiles of MEMS test structures to be acquired across an entire wafer while being actively probed, and, optionally, through a transparent window. An optically identical pair of sample and reference arm objectives is not required, which reduces the overall system cost, and also the cost and time required to change sample magnifications. Using a LED source, high magnification (e.g., 50.times.) can be obtained having excellent image quality, straight fringes, and high fringe contrast.

  5. Method and apparatus for coherent burst ranging

    DOE Patents [OSTI]

    Wachter, E.A.; Fisher, W.G.

    1998-04-28

    A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. In the coherent burst method, high frequency modulation of an acoustic or electromagnetic transmitter, such as a laser, is performed at a modulation frequency. This modulation frequency is transmitted quasi-continuously in the form of interrupted bursts of radiation. Energy from the transmitter is directed onto a target, interacts with the target, and the returning energy is collected. The encoded burst pattern contained in the collected return signal is detected coherently by a receiver that is tuned so as to be principally sensitive to the modulation frequency. The receiver signal is processed to determine target range using both time-of-flight of the burst envelope and phase shift of the high frequency modulation. This approach effectively decouples the maximum unambiguous range and range resolution relationship of earlier methods, thereby allowing high precision ranging to be conducted at arbitrarily long distances using at least one burst of encoded energy. The use of a receiver tuned to the high frequency modulation contained within the coherent burst vastly improves both sensitivity in the detection of the target return signal and rejection of background interferences, such as ambient acoustic or electromagnetic noise. Simultaneous transmission at several energies (or wavelengths) is possible by encoding each energy with a separate modulation frequency or pattern; electronic demodulation at the receiver allows the return pattern for each energy to be monitored independently. Radial velocity of a target can also be determined by monitoring change in phase shift of the return signal as a function of time. 12 figs.

  6. Method and apparatus for coherent burst ranging

    DOE Patents [OSTI]

    Wachter, Eric A. (138 Bay Path Dr., Oak Ridge, TN 37830); Fisher, Walter G. (8514 Carl Valentine, Knoxville, TN 37931)

    1998-01-01

    A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. In the coherent burst method, high frequency modulation of an acoustic or electromagnetic transmitter, such as a laser, is performed at a modulation frequency. This modulation frequency is transmitted quasi-continuously in the form of interrupted bursts of radiation. Energy from the transmitter is directed onto a target, interacts with the target, and the returning energy is collected. The encoded burst pattern contained in the collected return signal is detected coherently by a receiver that is tuned so as to be principally sensitive to the modulation frequency. The receiver signal is processed to determine target range using both time-of-flight of the burst envelope and phase shift of the high frequency modulation. This approach effectively decouples the maximum unambiguous range and range resolution relationship of earlier methods, thereby allowing high precision ranging to be conducted at arbitrarily long distances using at least one burst of encoded energy. The use of a receiver tuned to the high frequency modulation contained within the coherent burst vastly improves both sensitivity in the detection of the target return signal and rejection of background interferences, such as ambient acoustic or electromagnetic noise. Simultaneous transmission at several energies (or wavelengths) is possible by encoding each energy with a separate modulation frequency or pattern; electronic demodulation at the receiver allows the return pattern for each energy to be monitored independently. Radial velocity of a target can also be determined by monitoring change in phase shift of the return signal as a function of time.

  7. Nonlinear, noniterative, single-distance phase retrieval and developmental biology

    SciTech Connect (OSTI)

    Moosmann, Julian; Altapova, Venera; Haenschke, Daniel; Hofmann, Ralf; Baumbach, Tilo

    2012-05-17

    For coherent X-ray imaging, based on phase contrast through free-space Fresnel propagation, we discuss two noniterative, nonlinear approaches to the phase-retrieval problem from a single-distance intensity map of a pure-phase object. On one hand, a perturbative set-up is proposed where nonlinear corrections to the linearized transport-of-intensity situation are expanded in powers of the object-detector distance z and are evaluated in terms of the linear estimate. On the other hand, a nonperturbative projection algorithm, which is based on the (linear and local) contrast-transfer function (CTF), works with an effective phase in Fourier space. This effective phase obeys a modified CTF relation between intensity contrast at z > 0 and phase contrast at z= 0: Unphysical singularities of the local CTF model are cut off to yield 'quasiparticles' in analogy to the theory of the Fermi liquid. By identifying the positions of the zeros of the Fourier transformed intensity contrast as order parameters for the dynamical breaking of scaling symmetry we investigate the phase structure of the forward-propagation problem when interpreted as a statistical system. Results justify the quasiparticle approach for a wide range of intermediary phase variations. The latter algorithm is applied to data from biological samples recorded at the beamlines TopoTomo and ID19 at ANKA and ESRF, respectively.

  8. What is the distance to the CMB?

    SciTech Connect (OSTI)

    Clarkson, Chris; Umeh, Obinna; Maartens, Roy; Durrer, Ruth E-mail: umeobinna@gmail.com E-mail: Ruth.Durrer@unige.ch

    2014-11-01

    The success of precision cosmology depends not only on accurate observations, but also on the theoretical model --- which must be understood to at least the same level of precision. Subtle relativistic effects can lead to biased measurements if they are neglected. One such effect gives a systematic shift in the distance-redshift relation away from its background value, due to the non-linear relativistic conservation of total photon flux. We also show directly how this shift follows from a fully relativistic analysis of the geodesic deviation equation. We derive the expectation value of the shift using second-order perturbations about a concordance background, and show that the distance to last scattering is increased by 1%. We argue that neglecting this shift could lead to a significant bias in the background cosmological parameters, because it alters the meaning of the background model. A naive adjustment of CMB parameter estimation if this shift is really a correction to the background would raise the H{sub 0} value inferred from the CMB by 5%, potentially removing the tension with local measurements of H{sub 0}. Other CMB parameters which depend on the distance would also be shifted by ? 1? when combined with local H{sub 0} data. While our estimations rely on a simplistic analysis, they nevertheless illustrate that accurately defining the background model in terms of the expectation values of observables is critical when we aim to determine the model parameters at the sub-percent level.

  9. Flow Distances on Open Flow Networks

    E-Print Network [OSTI]

    Guo, Liangzhu; Shi, Peiteng; Wang, Jun; Huang, Xiaohan; Zhang, Jiang

    2015-01-01

    Open flow network is a weighted directed graph with a source and a sink, depicting flux distributions on networks in the steady state of an open flow system. Energetic food webs, economic input-output networks, and international trade networks, are open flow network models of energy flows between species, money or value flows between industrial sectors, and goods flows between countries, respectively. Flow distances (first-passage or total) between any given two nodes $i$ and $j$ are defined as the average number of transition steps of a random walker along the network from $i$ to $j$ under some conditions. They apparently deviate from the conventional random walk distance on a closed directed graph because they consider the openness of the flow network. Flow distances are explicitly expressed by underlying Markov matrix of a flow system in this paper. With this novel theoretical conception, we can visualize open flow networks, calculating centrality of each node, and clustering nodes into groups. We apply fl...

  10. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Key, William S. (Knoxville, TN); Sanders, Alvin J. (Knoxville, TN); Earl, Dennis D. (Knoxville, TN)

    1999-01-01

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a "beamsplitter"), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beamsplitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention.

  11. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Allison, S.W.; Cates, M.R.; Key, W.S.; Sanders, A.J.; Earl, D.D.

    1999-06-22

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a beam splitter''), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beam splitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention. 9 figs.

  12. Effective range function below threshold

    E-Print Network [OSTI]

    A. Deloff

    2000-06-26

    We demonstrate that the kernel of the Lippmann-Schwinger equation, associated with interactions consisting of a sum of the Coulomb plus a short range nuclear potential, below threshold becomes degenerate. Taking advantage of this fact, we present a simple method of calculating the effective range function for negative energies. This may be useful in practice since the effective range expansion extrapolated to threshold allows to extract low-energy scattering parameters: the Coulomb-modified scattering length and the effective range.

  13. Distances and absolute magnitudes from trigonometric parallaxes

    E-Print Network [OSTI]

    F. Arenou; X. Luri

    1998-12-04

    We first review the current knowledge of Hipparcos systematic and random errors, in particular small-scale correlations. Then, assuming Gaussian parallax errors and using examples from the recent Hipparcos literature, we show how random errors may be misinterpreted as systematic errors, or transformed into systematic errors. Finally we summarise how to get unbiased estimates of absolute magnitudes and distances, using either Bayesian or non-parametrical methods. These methods may be applied to get either mean quantities or individual estimates. In particular, we underline the notion of astrometry-based luminosity, which avoids the truncation biases and allows a full use of Hipparcos samples.

  14. Improved Long-Distance Wireless Charging Technology September 26, 2013

    E-Print Network [OSTI]

    Langendoen, Koen

    Improved Long-Distance Wireless Charging Technology September 26, 2013 Project Overview Wireless charging of consumer devices at a long distance with RF technology, would eliminate wires and give freedom

  15. Beyond Kennicott : perceptions of threshold, conceptions of distance

    E-Print Network [OSTI]

    Bull, Steven Keith

    1997-01-01

    Threshold: The thesis explores descriptions of threshold. Threshold is not an ordinary space. It relates to the here and the there and the understanding of distance. It is the phenomena of distance, no matter how close ...

  16. The solar neighborhood. XXXV. Distances to 1404 M dwarf systems...

    Office of Scientific and Technical Information (OSTI)

    solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky Citation Details In-Document Search Title: The solar neighborhood. XXXV. Distances to...

  17. Perceptions of Distance Education in Newfoundland and Labrador: 1999 2009

    E-Print Network [OSTI]

    Oyet, Alwell

    Perceptions of Distance Education in Newfoundland and Labrador: 1999 2009 ................................................................................................................. 5 I. Study conducted in 1999 2000 ........................................................................................................... 80 #12; 5 Perceptions of Distance Education in Newfoundland and Labrador: 1999 2009

  18. Design of 3D eye-safe middle range vibrometer

    SciTech Connect (OSTI)

    Polulyakh, Valeriy; Poutivski, Iouri

    2014-05-27

    Laser Doppler Vibrometer and Range Meter (3D-MRV) is designed for middle range distances [1100 meters]. 3D-MRV combines more than one laser in one device for a simultaneous real time measuring the distance and movement of the targets. The first laser has a short pulse (t?30psec) and low energy (E?200nJ) for distance measurement and the second one is a CW (continuous wave) single frequency laser for the velocity measurement with output power (P?30mW). Both lasers perform on the eye-safe wavelength 1.5 ?m. 3D-MRV uses the same mono-static optical transmitting and receiving channel for both lasers including an output telescope and a scanning angular system. 3D-MRV has an optical polarization switch to combine linear polarized laser beams from two lasers into one optical channel. The laser beams from both lasers by turns illuminate the target and the scattered laser radiation is collected by the telescope on a photo detector. The electrical signal from photo detector is used for measuring the distance to the target and its movement. For distance measurement the time of flight method is employed. For targets movement the optical heterodyne method is employed. The received CW laser radiation is mixed on a photo detector with the frequency-shifted laser radiation that is taken from CW laser and passed through an acousto-optic cell. The electrical signal from a photo detector on the difference frequency and phase has information about movement of the scattered targets. 3D-MVR may be used for the real time picturing of vibration of the extensive targets like bridges or aircrafts.

  19. OBJECTIVE DISTANCE MEASURES FOR SPECTRAL DISCONTINUITIES IN CONCATENATIVE SPEECH SYNTHESIS

    E-Print Network [OSTI]

    Edinburgh, University of

    - efficientscouldimprovetheprediction. StylianouandSyrdal [4] found that the Kullback-Leibler distance between FFT- based power spectra

  20. Distance dependence of the phase signal in eddy current microscopy

    E-Print Network [OSTI]

    Roll, Tino; Fischer, Ulrich; Schleberger, Marika

    2008-01-01

    Atomic force microscopy using a magnetic tip is a promising tool for investigating conductivity on the nano-scale. By the oscillating magnetic tip eddy currents are induced in the conducting parts of the sample which can be detected in the phase signal of the cantilever. However, the origin of the phase signal is still controversial because theoretical calculations using a monopole appoximation for taking the electromagnetic forces acting on the tip into account yield an effect which is too small by more than two orders of magnitude. In order to determine the origin of the signal we used especially prepared gold nano patterns embedded in a non-conducting polycarbonate matrix and measured the distance dependence of the phase signal. Our data clearly shows that the interacting forces are long ranged and therefore, are likely due to the electromagnetic interaction between the magnetic tip and the conducting parts of the surface. Due to the long range character of the interaction a change in conductivity of $\\Del...

  1. Preliminaries Conserved Interval Distance between Non-trivial

    E-Print Network [OSTI]

    Blin, Guillaume

    Outline Preliminaries Results Conclusion Conserved Interval Distance between Non-trivial Genomes.Rizzi@unitn.it August the 16th Guillaume Blin, Romeo Rizzi Conserved Interval Distance between Non-trivial Genomes #12 Guillaume Blin, Romeo Rizzi Conserved Interval Distance between Non-trivial Genomes #12;Outline

  2. Problems of Distance-Regular Graphs Hiroshi Suzuki

    E-Print Network [OSTI]

    Xi, Changchang

    ­328. [14] H. Suzuki, The Terwilliger algebra associated with a set of vertices in a distance-regular graph, J. Alg. Combin. 22 (2005), 5-38. [15] P. Terwilliger, Distance-regular graphs and (s, c, a, k)-graphs, J. Combin. Th. (B) 34 (1983), 151­164. [16] P. Terwilliger, A new inequality for distance

  3. Week 4: History / philosophy, distance methods January, 2010

    E-Print Network [OSTI]

    Borenstein, Elhanan

    Week 4: History / philosophy, distance methods Genome 570 January, 2010 Week 4: History Gaylord Simpson (1902-1984) Week 4: History / philosophy, distance methods p.2/73 #12;A horse tree drawn by Simpson Week 4: History / philosophy, distance methods p.3/73 #12;A phylogeny of the living Craniata

  4. do you know your RANGE?

    E-Print Network [OSTI]

    Hoffman, Garlyn O.

    1957-01-01

    need a good knowledge of range man- asemen2 b~f~re m~kjng CID?E CD~~B~~DDS DY range plots as is required in Part 111. An ex- ample of Part I11 is on page 12. The four range plots are placed just exactly like placing a class of livestock at a stock... good cover of native grass. Grass is a product which is harvested and marketed as meat, ~uool, mohair and wildlife. When you market animals you are paid for the number of poz~nds rather than the number of head you sell. By practicing good range m...

  5. Multi-dimensional position sensor using range detectors

    DOE Patents [OSTI]

    Vann, Charles S. (Fremont, CA)

    2000-01-01

    A small, non-contact optical sensor uses ranges and images to detect its relative position to an object in up to six degrees of freedom. The sensor has three light emitting range detectors which illuminate a target and can be used to determine distance and two tilt angles. A camera located between the three range detectors senses the three remaining degrees of freedom, two translations and one rotation. Various range detectors, with different light sources, e.g. lasers and LEDs, different collection options, and different detection schemes, e.g. diminishing return and time of flight can be used. This sensor increases the capability and flexibility of computer controlled machines, e.g. it can instruct a robot how to adjust automatically to different positions and orientations of a part.

  6. Extended range chemical sensing apparatus

    DOE Patents [OSTI]

    Hughes, R.C.; Schubert, W.K.

    1994-01-18

    An apparatus is described for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy. 6 figures.

  7. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    PACIFIC SOUTHWEST Forest and Range Experiment Station Ash Leachate Can Reduce Surface Erosion leachate can reduce surface erosion. Res. Note PSW-342, 4 p., illus. Pacific Southwest Forest and Range Exp from north- western California, ash leachate flocculated the clay frac- tions. As a result, the soil

  8. Range Searching in Categorical Data: Colored Range Searching on Grid

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    , gsat @cs.duke.edu AT&T Labs, Shannon Laboratory, 180 Park Ave., Florham Park, NJ 07932. muthu each stock has a category that is the industry sector it belongs to, and we consider a range

  9. SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators

    E-Print Network [OSTI]

    J. Guy; P. Astier; S. Baumont; D. Hardin; R. Pain; N. Regnault; S. Basa; R. G. Carlberg; A. Conley; S. Fabbro; D. Fouchez; I. M. Hook; D. A. Howell; K. Perrett; C. J. Pritchet; J. Rich; M. Sullivan; P. Antilogus; E. Aubourg; G. Bazin; J. Bronder; M. Filiol; N. Palanque-Delabrouille; P. Ripoche; V. Ruhlmann-Kleider

    2007-01-29

    We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by the SNLS collaboration. We derive the average spectral sequence of Type Ia supernovae and their main variability components including a color variation law. The model allows us to measure distance moduli in the spectral range 2500-8000 A with calculable uncertainties, including those arising from variability of spectral features. Thanks to the use of high-redshift SNe to model the rest-frame UV spectral energy distribution, we are able to derive improved distance estimates for SNe Ia in the redshift range 0.8

  10. Long range optical phonons in liquid water

    E-Print Network [OSTI]

    Elton, Daniel C

    2015-01-01

    In this work we show that on subpicosecond time scales optical phonon modes can propagate through the H-bond network of water over relatively long distances (2-4 nm). Using molecular dynamics simulation we find propagating optical phonons in the librational and OH stretching bands. The OH stretching phonon only appears when a polarizable model (TTM3-F) is employed. Both of these phonon modes exhibit LO-TO splitting at $k = 0$, indicating long range dipole-dipole interactions in the system. We study the LO-TO splitting as a function of temperature, finding that the splitting increases for the librational mode at higher temperatures but decreases for the stretching mode. Since LO-TO splitting is intimately connected to structure, this analysis opens the door for new insights into how the local structure of water changes with temperature. Our results also explain a previously unnoticed discrepancy one encounters when comparing the librational peaks found in Raman and IR/dielectric spectra. Previously the three R...

  11. Space efficient streaming algorithms for the distance to monotonicity and asymmetric edit distance

    E-Print Network [OSTI]

    Saks, Michael

    2012-01-01

    Approximating the length of the longest increasing sequence (LIS) of a data stream is a well-studied problem. There are many algorithms that estimate the size of the complement of the LIS, referred to as the \\emph{distance to monotonicity}, both in the streaming and property testing setting. Let $n$ denote the size of an input array. Our aim is to develop a one-pass streaming algorithm that accurately approximates the distance to monotonicity, and only uses polylogarithmic storage. For any $\\delta > 0$, our algorithm provides a $(1+\\delta)$-multiplicative approximation for the distance, and uses only $O((\\log^2 n)/\\delta)$ space. The previous best known approximation using poly-logarithmic space was a multiplicative 2-factor. Our algorithm is simple and natural, being just 3 lines of pseudocode. It is essentially a polylogarithmic space implementation of a classic dynamic program that computes the LIS. Our technique is more general and is applicable to other problems that are exactly solvable by dynamic progr...

  12. Effect Of Platooning on Fuel Consumption of Class 8 Vehicles Over a Range of Speeds, Following Distances, and Mass

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansas Nuclear Profile 2010MesoscopyStaff »Vehicle automation is a promising

  13. The Effect of Metallicity on Cepheid-Based Distances

    E-Print Network [OSTI]

    Shoko Sakai; Laura Ferrarese; Rob Kennicutt; Abi Saha

    2004-02-20

    We have used the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope to obtain V and I images of seven nearby galaxies. For each, we have measured a distance using the tip of the red giant branch (TRGB) method. By comparing the TRGB distances to published Cepheid distances, we investigate the metallicity dependence of the Cepheid period-luminosity relation. Our sample is supplemented by 10 additional galaxies for which both TRGB and Cepheid distances are available in the literature, thus providing a uniform coverage in Cepheid abundances between 1/20 and 2 (O/H)solar. We find that the difference between Cepheid and TRGB distances decreases monotonically with increasing Cepheid abundance, consistent with a mean metallicity dependence of the Cepheid distance moduli of (delta(m-M))/(delta[O/H]) = -0.24 +- 0.05 mag/dex.

  14. DISTANCE AND KINEMATICS OF THE TW HYDRAE ASSOCIATION FROM PARALLAXES

    SciTech Connect (OSTI)

    Weinberger, Alycia J.; Boss, Alan P.; Anglada-Escude, Guillem

    2013-01-10

    From common proper motion and signatures of youth, researchers have identified about 30 members of a putative TW Hydrae Association. Only four of these had parallactic distances from Hipparcos. We have measured parallaxes and proper motions for 14 primary members. We combine these with literature values of radial velocities to show that the Galactic space motions of the stars, with the exception of TWA 9 and 22, are parallel and do not indicate convergence at a common formation point sometime in the last few million years. The space motions of TWA 9 and 22 do not agree with the others and indicate that they are not TWA members. The median parallax is 18 mas or 56 pc. We further analyze the stars' absolute magnitudes on pre-main-sequence evolutionary tracks and find a range of ages with a median of 10.1 Myr and no correlation between age and Galactic location. The TWA stars may have formed from an extended and filamentary molecular cloud but are not necessarily precisely coeval.

  15. Cepheid Variables and their Application to the Cosmological Distance Scale

    E-Print Network [OSTI]

    Hoffmann, Samantha L

    2013-05-02

    . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3. DIFFERENCE IMAGING ANALYSIS OF TYPE IA SUPERNOVA HOST NGC 5584 FOR CEPHEID VARIABLES . . . . . . . . . . . . . . . . . . 63 3.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 3.2 Observations and Data Reduction... and type Ia supernovae (SNe Ia). This cosmological distance scale started with a geometric distance measurement of Cepheids, such as parallaxes by [5]. The Cepheid Period-Luminosity relation was characterized by [79] for use as a primary distance...

  16. Discovering the Nature of Dark Energy: Towards Better Distances...

    Office of Scientific and Technical Information (OSTI)

    Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Filippenko, Alexei Vladimir Univ. California, Berkeley 79...

  17. The Design, Construction, and Operation of Long-Distance High...

    Open Energy Info (EERE)

    The Design, Construction, and Operation of Long-Distance High-Voltage Electricity Transmission Technologies Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  18. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    of forest stands is valuable for studies of the physical environment. Energy balance research centers on howPACIFIC SOUTHWEST Forest and Range Experiment Station FOREST SERVICE U.S. DEPARTMENT in relation to climatic and stand variables USDA FOREST SERVICE RESEARCH PAPER PSW- 71 /1971 #12;CONTENTS

  19. Forest and Range Experiment Station

    E-Print Network [OSTI]

    wider range of suppliers. As working circles beyond the size of a single National Forest have recently. Alternatives for expansion of working circles must be assessed in light of present Forest Service timber management policy and the impacts of timber supply. These alternates include (a) combination of National

  20. SU-E-T-98: Dependence of Radiotherapy Couch Transmission Factors On Field Size and Couch-Isocenter Distance

    SciTech Connect (OSTI)

    Benhabib, S; Duan, J; Wu, X; Cardan, R; Shen, S; Huang, M; Popple, R; Brezovich, I

    2014-06-01

    Purpose: The dosimetric effect of the treatment couch is non-negligible in today's radiotherapy treatment. To accurately include couch in dose calculation, we investigated the dependence of couch transmission factors on field size and couch-isocenter distance. Methods: Couch transmission factors for Varian Exact Couch were determined by taking the ratios of ionization of a posterior-anterior beam with and without the couch in the beam path. Measurements were performed at the isocenter using a PTW cylindrical ionization chamber (Model 31030) with an Aluminum buildup cap of 1.1 cm thick for the 6 MV photon beam. Ionization readings for beam sizes ranging from 2 2 cm2 to 40 40 cm2 were taken. Transmission factors for couch-isocenter distances ranging from 3 cm to 20 cm were also investigated. Results: The couch transmission factors increased with the field size approximately in an exponential manner. For the field sizes that we tested, the transmission factor ranged from 0.976 to 0.992 for couch-isocenter distance of 3 cm. The transmission factor was also monotonically dependent on couch-isocenter separation distance, but in a lighter magnitude. For the tested couch heights, the transmission factor ranged from 0.974 0.972 for 2 2 cm2 field size and 0.992 0.986 for 40 40 cm2 field size. The dependence on couch-isocenter distance is stronger for larger field size. Conclusions: The transmission factor of a radiotherapy treatment couch increases with field size of the radiation beam and its distance from the isocenter. Such characterization of the couch transmission factor helps improve the accuracy of couch modeling for radiotherapy treatment planning.

  1. Chaos synchronization in long-range coupled map lattices

    E-Print Network [OSTI]

    C. Anteneodo; A. M. Batista; R. L. Viana

    2004-01-22

    We investigate the synchronization phenomenon in coupled chaotic map lattices where the couplings decay with distance following a power-law. Depending on the lattice size, the coupling strength and the range of the interactions, complete chaos synchronization may be attained. The synchronization domain in parameter space can be analytically delimited by means of the condition of negativity of the largest transversal Lyapunov exponent. Here we analyze in detail the role of all the system parameters in the ability of the lattice to achieve complete synchronization, testing analytical results with the outcomes of numerical experiments.

  2. Risk Distance: The Loss of Strength Gradient and Colombia's Geography of Impunity

    E-Print Network [OSTI]

    Demarest, Geoffrey

    2013-12-31

    The dissertation proposes a theoretical category of distance, risk distance, as a prompt for understanding outcomes in internal armed struggles. Geographers are familiar with cost distance -- conceiving distance according ...

  3. Ris-R-1518(EN) The necessary distance between large

    E-Print Network [OSTI]

    Ris-R-1518(EN) The necessary distance between large wind farms offshore - study Sten Frandsen. As it is often the need for offshore wind farms, the model handles a regular array-geometry with straight rows distance between large wind farms in the offshore environment. The main results are given in Section 1

  4. A novel molecular index for secondary oil migration distance

    E-Print Network [OSTI]

    alteration of buried organic matter in source rocks, followed by oil expulsion (primary migration) outA novel molecular index for secondary oil migration distance Liuping Zhang1 , Maowen Li2 , Yang migration distances from source rocks to reservoirs can greatly help in the search for new petroleum

  5. On maximal instances for the original syntenic distance Cedric Chauve

    E-Print Network [OSTI]

    Chauve, Cedric

    genomes has been introduced by Ferretti, Nadeau and Sanko#11; as an approximation of the evolutionary distance between genomes for which the gene order is not known. This distance is the minimum number of fusions, #12;ssions and translocations required to transform a genome into an other. Kleinberg and Liben

  6. CHAOTIC DATA ENCRYPTION FOR LONG-DISTANCE MONITORING OF NUCLEAR

    E-Print Network [OSTI]

    Koksal, Can Emre

    matrix = Lorenz system parameter = Lorenz system parameter = excess delayed neutron precursorsCHAOTIC DATA ENCRYPTION FOR LONG-DISTANCE MONITORING OF NUCLEAR REACTORS Gnyaz Ablay The Ohio DATA ENCRYPTION FOR LONG-DISTANCE MONITORING OF NUCLEAR REACTORS Gnyaz Ablay1 , C. Emre Koksal2

  7. Patterns in Offender Distance Decay and the Geographic Profiling Problem.

    E-Print Network [OSTI]

    O'Leary, Michael

    Patterns in Offender Distance Decay and the Geographic Profiling Problem. Mike O'Leary Towson University 2010 Fall Western Section Meeting Los Angeles, CA October 9-10, 2010 Mike O'Leary (Towson Department for his assistance. Mike O'Leary (Towson University) Offender Distance Decay October 9, 2010 2

  8. Patterns in Offender Distance Decay and the Geographic Profiling Problem.

    E-Print Network [OSTI]

    O'Leary, Michael

    Patterns in Offender Distance Decay and the Geographic Profiling Problem. Mike O'Leary Towson University 2011 Crime Mapping Conference Miami, FL October 19-21, 2011 Mike O'Leary (Towson University Department for his assistance. Mike O'Leary (Towson University) Offender Distance Decay October 21, 2011 2

  9. Introduction The median problem for the reversal distance in

    E-Print Network [OSTI]

    Lonardi, Stefano

    genomes E. Ohlebusch, M.I. Abouelhoda, K. Hockel, J. Stallkamp University of Ulm, Germany CPM 2005 The median problem for the reversal distance in circular bacterial genomes #12;Introduction Methods Conclusion General Problem Distances Specific Problem Median Problem Given 3 genomes G1, G2, and G3, find

  10. Analysis of the Argonne distance tabletop exercise method.

    SciTech Connect (OSTI)

    Tanzman, E. A.; Nieves, L. A.; Decision and Information Sciences

    2008-02-14

    The purpose of this report is to summarize and evaluate the Argonne Distance Tabletop Exercise (DISTEX) method. DISTEX is intended to facilitate multi-organization, multi-objective tabletop emergency response exercises that permit players to participate from their own facility's incident command center. This report is based on experience during its first use during the FluNami 2007 exercise, which took place from September 19-October 17, 2007. FluNami 2007 exercised the response of local public health officials and hospitals to a hypothetical pandemic flu outbreak. The underlying purpose of the DISTEX method is to make tabletop exercising more effective and more convenient for playing organizations. It combines elements of traditional tabletop exercising, such as scenario discussions and scenario injects, with distance learning technologies. This distance-learning approach also allows playing organizations to include a broader range of staff in the exercise. An average of 81.25 persons participated in each weekly webcast session from all playing organizations combined. The DISTEX method required development of several components. The exercise objectives were based on the U.S. Department of Homeland Security's Target Capabilities List. The ten playing organizations included four public health departments and six hospitals in the Chicago area. An extent-of-play agreement identified the objectives applicable to each organization. A scenario was developed to drive the exercise over its five-week life. Weekly problem-solving task sets were designed to address objectives that could not be addressed fully during webcast sessions, as well as to involve additional playing organization staff. Injects were developed to drive play between webcast sessions, and, in some cases, featured mock media stories based in part on player actions as identified from the problem-solving tasks. The weekly 90-minute webcast sessions were discussions among the playing organizations that were moderated by a highly-qualified public health physician, who reviewed key scenario developments and player actions, as well as solicited input from each playing organization. The exercise control structure included trusted agents who oversaw exercise planning, playing organization points of contact to ensure exercise coordination, and exercise controller/evaluators to initiate and oversee exercise play. A password-protected exercise website was designed for FluNami 2007 to serve as a compartmentalized central information source, and for transmitting exercise documents. During the course of FluNami 2007, feedback on its quality was collected from players and controller/evaluators. Player feedback was requested at the conclusion of each webcast, upon completion of each problem-solving task, and on October 17, 2007, after the final webcast session had ended. The overall average score given to FluNami 2008 by the responding players was 3.9 on a five-point scale. In addition, suggestions for improving the process were provided by Argonne controller/evaluators after the exercise concluded. A series of recommendations was developed based on feedback from the players and controller/evaluators. These included improvements to the exercise scope and objectives, the problem-solving tasks, the scenarios, exercise control, the webcast sessions, the exercise website, and the player feedback process.

  11. Range determination for scannerless imaging

    DOE Patents [OSTI]

    Muguira, Maritza Rosa (Albuquerque, NM); Sackos, John Theodore (Albuquerque, NM); Bradley, Bart Davis (Albuquerque, NM); Nellums, Robert (Albuquerque, NM)

    2000-01-01

    A new method of operating a scannerless range imaging system (e.g., a scannerless laser radar) has been developed. This method is designed to compensate for nonlinear effects which appear in many real-world components. The system operates by determining the phase shift of the laser modulation, which is a physical quantity related physically to the path length between the laser source and the detector, for each pixel of an image.

  12. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance.

  13. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-12-03

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance. 6 figs.

  14. Kinetic distance and kinetic maps from molecular dynamics simulation

    E-Print Network [OSTI]

    Noe, Frank

    2015-01-01

    Characterizing macromolecular kinetics from molecular dynamics (MD) simulations requires a distance metric that can distinguish slowly-interconverting states. Here we build upon diffusion map theory and define a kinetic distance for irreducible Markov processes that quantifies how slowly molecular conformations interconvert. The kinetic distance can be computed given a model that approximates the eigenvalues and eigenvectors (reaction coordinates) of the MD Markov operator. Here we employ the time-lagged independent component analysis (TICA). The TICA components can be scaled to provide a kinetic map in which the Euclidean distance corresponds to the kinetic distance. As a result, the question of how many TICA dimensions should be kept in a dimensionality reduction approach becomes obsolete, and one parameter less needs to be specified in the kinetic model construction. We demonstrate the approach using TICA and Markov state model (MSM) analyses for illustrative models, protein conformation dynamics in bovine...

  15. Astrophysical tests of modified gravity: Constraints from distance indicators in the nearby universe

    SciTech Connect (OSTI)

    Jain, Bhuvnesh; Vikram, Vinu; Sakstein, Jeremy

    2013-12-10

    We use distance measurements in the nearby universe to carry out new tests of gravity, surpassing other astrophysical tests by over two orders of magnitude for chameleon theories. The three nearby distance indicatorscepheids, tip of the red giant branch (TRGB) stars, and water masersoperate in gravitational fields of widely different strengths. This enables tests of scalar-tensor gravity theories because they are screened from enhanced forces to different extents. Inferred distances from cepheids and TRGB stars are altered (in opposite directions) over a range of chameleon gravity theory parameters well below the sensitivity of cosmological probes. Using published data, we have compared cepheid and TRGB distances in a sample of unscreened dwarf galaxies within 10 Mpc. We use a comparable set of screened galaxies as a control sample. We find no evidence for the order unity force enhancements expected in these theories. Using a two-parameter description of the models (the coupling strength and background field value), we obtain constraints on both the chameleon and symmetron screening scenarios. In particular we show that f(R) models with background field values f {sub R0} above 5 10{sup 7} are ruled out at the 95% confidence level. We also compare TRGB and maser distances to the galaxy NGC 4258 as a second test for larger field values. While there are several approximations and caveats in our study, our analysis demonstrates the power of gravity tests in the local universe. We discuss the prospects for additional improved tests with future observations.

  16. Extended-range tiltable micromirror

    DOE Patents [OSTI]

    Allen, James J. (Albuquerque, NM); Wiens, Gloria J. (Newberry, FL); Bronson, Jessica R. (Gainesville, FL)

    2009-05-05

    A tiltable micromirror device is disclosed in which a micromirror is suspended by a progressive linkage with an electrostatic actuator (e.g. a vertical comb actuator or a capacitive plate electrostatic actuator) being located beneath the micromirror. The progressive linkage includes a pair of torsion springs which are connected together to operate similar to a four-bar linkage with spring joints. The progressive linkage provides a non-linear spring constant which can allow the micromirror to be tilted at any angle within its range substantially free from any electrostatic instability or hysteretic behavior.

  17. Range Fuels | Open Energy Information

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLCALLETEREFU Elektronik GmbHRahusRamkyRange Fuels Jump

  18. Range Resources | Open Energy Information

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎Wind Farm Jump to:Randsburg,Range

  19. Wide-range radioactive-gas-concentration detector

    DOE Patents [OSTI]

    Anderson, D.F.

    1981-11-16

    A wide-range radioactive-gas-concentration detector and monitor capable of measuring radioactive-gas concentrations over a range of eight orders of magnitude is described. The device is designed to have an ionization chamber sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel-plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel-plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization-chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  20. Live Fire Range Environmental Assessment

    SciTech Connect (OSTI)

    1993-08-01

    The Central Training Academy (CTA) is a DOE Headquarters Organization located in Albuquerque, New Mexico, with the mission to effectively and efficiently educate and train personnel involved in the protection of vital national security interests of DOE. The CTA Live Fire Range (LFR), where most of the firearms and tactical training occurs, is a complex separate from the main campus. The purpose of the proposed action is to expand the LFR to allow more options of implementing required training. The Department of Energy has prepared this Environmental Assessment (EA) for the proposed construction and operation of an expanded Live Fire Range Facility at the Central Training Academy in Albuquerque, New Mexico. Based on the analysis in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an environmental impact statement is not required and DOE is issuing this Finding of No Significant Impact (FONSI).

  1. Local and global statistical distances are equivalent on pure states

    E-Print Network [OSTI]

    Scott M. Cohen

    2009-06-10

    The statistical distance between pure quantum states is obtained by finding a measurement that is optimal in a sense defined by Wootters. As such, one may expect that the statistical distance will turn out to be different if the set of possible measurements is restricted in some way. It nonetheless turns out that if the restriction is to local operations and classical communication (LOCC) on any multipartite system, then the statistical distance is the same as it is without restriction, being equal to the angle between the states in Hilbert space.

  2. Minimum Distance between Bent and 1-resilient Boolean Functions

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    , INDIA. soumen@iitg.ernet.in 2 Applied Statistics Unit, Indian Statistical Institute, 203, B T Road, Kolkata 700 108, INDIA subho@isical.ac.in Abstract. In this paper we study the minimum distance between

  3. Distance determination to eight galaxies using expanding photosphere method

    SciTech Connect (OSTI)

    Bose, Subhash; Kumar, Brijesh, E-mail: email@subhashbose.com, E-mail: bose@aries.res.in [Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263002 (India)

    2014-02-20

    Type IIP supernovae (SNe) are recognized as independent extragalactic distance indicators; however, keeping in mind the diverse nature of their observed properties as well as the availability of good quality data, more and newer events need to be tested for their applicability as reliable distance indicators. We use early photometric and spectroscopic data of eight Type IIP SNe to derive distances to their host galaxies by using the expanding photosphere method (EPM). For five of these, the EPM is applied for the first time. In this work, we improved EPM application by using SYNOW estimated velocities and by semi-deconvolving the broadband filter responses while deriving color temperatures and blackbody angular radii. We find that the derived EPM distances are consistent with that derived using other redshift-independent methods.

  4. The solar neighborhood. XXXV. Distances to 1404 M dwarf systems...

    Office of Scientific and Technical Information (OSTI)

    solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky Winters, Jennifer G.; Jao, Wei-Chun; Dieterich, Sergio B., E-mail:...

  5. Distance sampling and the challenge of monitoring butterfly populations

    E-Print Network [OSTI]

    Shuker, David

    Distance sampling and the challenge of monitoring butterfly populations Nick J. B. Isaac110 5DD, UK; 5 Institute for Environment, Sustainability and Regeneration, Mellor Building Monitoring Scheme (UKBMS) have been influential in informing our understanding of environmental change

  6. TOWARD THE MINIMUM INNER EDGE DISTANCE OF THE HABITABLE ZONE

    E-Print Network [OSTI]

    Zsom, Andras

    We explore the minimum distance from a host star where an exoplanet could potentially be habitable in order not to discard close-in rocky exoplanets for follow-up observations. We find that the inner edge of the Habitable ...

  7. Distance Learning and the WorldWide Web

    E-Print Network [OSTI]

    Meyer, Albert R.

    /Singapore Distance Learning Project Develop and teach three courses at National University of Singapore and Nanyang. Applied research and development: Support for continuing improvement in education. Daedalus, Fall 1998, p

  8. A GPS Pseudorange Based Cooperative Vehicular Distance Measurement Technique

    E-Print Network [OSTI]

    Yang, Daiqin

    Accurate vehicular localization is important for various cooperative vehicle safety (CVS) applications such as collision avoidance, turning assistant, etc. In this paper, we propose a cooperative vehicular distance measurement ...

  9. Authoring and Presentation Tools for Distance Learning over Interactive TV

    E-Print Network [OSTI]

    Erdem, Cigdem Eroglu

    questions into interactive exams, and a virtual teacher whose facial animation is automatically generated]: Multimedia Information Systems animations, evaluation/methodology, video. General Terms Management, Design, Human Factors. Keywords Distance education, interactive TV, set-top-box, multimedia presentation. 1

  10. Upper bounds on minimum distance of nonbinary quantum stabilizer codes

    E-Print Network [OSTI]

    Kumar, Santosh

    2005-11-01

    The most popular class of quantum error correcting codes is stabilizer codes. Binary quantum stabilizer codes have been well studied, and Calderbank, Rains, Shor and Sloane (July 1998) have constructed a table of upper bounds on the minimum distance...

  11. Cepheid Variables in M33 and the Extragalactic Distance Scale

    E-Print Network [OSTI]

    Bradshaw, Andrew K.

    2010-01-16

    , they can be used to determine distances to nearby galaxies and calibrate secondary distance indicators, such as type Ia supernovae. A detailed study of Cepheids in nearby galaxies is required in order to properly characterize their properties and variations... be related to other more fundamental quantities. The name ?variable star? can refer to a wide variety of objects, including supernovae, eclipsing binary stars, or even transiting planets. However, this thesis will be focused on a speci c type of variable star...

  12. SBF Distances to Leo and Virgo using the HST

    E-Print Network [OSTI]

    P. W. Morris; T. Shanks

    1998-02-05

    We have used archive HST WFPC2 data for three elliptical galaxies (NGC 3379 in the Leo I group, and NGC 4472 and NGC 4406 in the Virgo cluster) to determine their distances using the Surface Brightness Fluctuation (SBF) method as described by Tonry and Schneider (1988). A comparison of the HST results with the SBF distance moduli of Ciardullo et al (1993) shows significant disagreement and suggests that the r.m.s. error on these ground-based distance moduli is actually as large as +-0.25 mag. The agreement is only slightly improved when we compare our results with the HST and ground-based SBF distances from Ajhar et al (1997) and Tonry et al (1997); the comparison suggests that a lower limit on the error of the HST SBF distance moduli is +-0.17 mag. Overall, these results suggest that previously quoted measurement errors may underestimate the true error in SBF distance moduli by at least a factor of 2-3.

  13. The Heliocentric Distance Where the Deflections and Rotations of Solar Coronal Mass Ejections Occur

    E-Print Network [OSTI]

    Kay, C

    2015-01-01

    Understanding the trajectory of a coronal mass ejection (CME), including any deflection from a radial path, and the orientation of its magnetic field is essential for space weather predictions. Kay et al. (2015b) developed a model, Forecasting a CME's Altered Trajectory (ForeCAT), of CME deflections and rotation due to magnetic forces, not including the effects of reconnection. ForeCAT is able to reproduce the deflection of observed CMEs (Kay et al. 2015a). The deflecting CMEs tend to show a rapid increase of their angular momentum close to the Sun, followed by little to no increase at farther distances. Here we quantify the distance at which the CME deflection is "determined," which we define as the distance after which the background solar wind has negligible influence on the total deflection. We consider a wide range in CME masses and radial speeds and determine that the deflection and rotation of these CMEs can be well-described by assuming they propagate with constant angular momentum beyond 10 Rs. The a...

  14. Prediction of spectral shifts proportional to source distances by time-varying frequency or wavelength selection

    E-Print Network [OSTI]

    V. Guruprasad

    2008-12-04

    Any frequency selective device with an ongoing drift will cause observed spectra to be variously and simultaneously scaled in proportion to their source distances. The reason is that detectors after the drifting selection will integrate instantaneous electric or magnetic field values from successive sinusoids, and these sinusoids would differ in both frequency and phase. Phase differences between frequencies are ordinarily irrelevant, and recalibration procedures at most correct for frequency differences. With drifting selection, however, each integrated field value comes from *the sinusoid of the instantaneously selected frequency at its instantaneous received phase*, hence the waveform constructed by the integration will follow the drifting selection with a phase acceleration given by the drift rate times the slope of the received phase spectrum. A phase acceleration is literally a frequency shift, and the phase spectrum slope of a received waveform is an asymptotic measure of the source distance, as the path delay presents phase offsets proportional to frequency times the distance, and eventually exceeding all initial phase differences. Tunable optics may soon be fast enough for realizing such shifts by Fourier switching, and could lead to pocket X-ray devices; sources continuously variable from RF to gamma rays; capacity multiplication with jamming and noise immunity in both fibre and radio channels, passive ranging from ground to deep space; etc.

  15. The K giant stars from the LAMOST survey data. I. Identification, metallicity, and distance

    SciTech Connect (OSTI)

    Liu, Chao; Deng, Li-Cai; Li, Jing; Gao, Shuang; Yang, Fan; Xu, Yan; Zhang, Yue-Yang; Xin, Yu; Wu, Yue [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Datun Road 20A, Beijing 100012 (China); Carlin, Jeffrey L.; Newberg, Heidi Jo [Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180 (United States); Smith, Martin C. [Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China); Xue, Xiang-Xiang [Max Planck Institute for Astronomy, Knigstuhl 17, Heidelberg D-69117 (Germany); Jin, Ge, E-mail: liuchao@nao.cas.cn [University of Science and Technology of China, Hefei 230026 (China)

    2014-08-01

    We present a support vector machine classifier to identify the K giant stars from the LAMOST survey directly using their spectral line features. The completeness of the identification is about 75% for tests based on LAMOST stellar parameters. The contamination in the identified K giant sample is lower than 2.5%. Applying the classification method to about two million LAMOST spectra observed during the pilot survey and the first year survey, we select 298,036 K giant candidates. The metallicities of the sample are also estimated with an uncertainty of 0.13 ? 0.29 dex based on the equivalent widths of Mg{sub b} and iron lines. A Bayesian method is then developed to estimate the posterior probability of the distance for the K giant stars, based on the estimated metallicity and 2MASS photometry. The synthetic isochrone-based distance estimates have been calibrated using 7 globular clusters with a wide range of metallicities. The uncertainty of the estimated distance modulus at K = 11 mag, which is the median brightness of the K giant sample, is about 0.6 mag, corresponding to ?30% in distance. As a scientific verification case, the trailing arm of the Sagittarius stream is clearly identified with the selected K giant sample. Moreover, at about 80 kpc from the Sun, we use our K giant stars to confirm a detection of stream members near the apo-center of the trailing tail. These rediscoveries of the features of the Sagittarius stream illustrate the potential of the LAMOST survey for detecting substructures in the halo of the Milky Way.

  16. IDENTIFYING THE YOUNG LOW-MASS STARS WITHIN 25 pc. II. DISTANCES, KINEMATICS, AND GROUP MEMBERSHIP

    SciTech Connect (OSTI)

    Shkolnik, Evgenya L.; Anglada-Escude, Guillem; Liu, Michael C.; Bowler, Brendan P.; Weinberger, Alycia J.; Boss, Alan P.; Reid, I. Neill; Tamura, Motohide

    2012-10-10

    We have conducted a kinematic study of 165 young M dwarfs with ages of {approx}<300 Myr. Our sample is composed of stars and brown dwarfs with spectral types ranging from K7 to L0, detected by ROSAT and with photometric distances of {approx}<25 pc assuming that the stars are single and on the main sequence. In order to find stars kinematically linked to known young moving groups (YMGs), we measured radial velocities for the complete sample with Keck and CFHT optical spectroscopy and trigonometric parallaxes for 75 of the M dwarfs with the CAPSCam instrument on the du Pont 2.5 m Telescope. Due to their youthful overluminosity and unresolved binarity, the original photometric distances for our sample underestimated the distances by 70% on average, excluding two extremely young ({approx}<3 Myr) objects found to have distances beyond a few hundred parsecs. We searched for kinematic matches to 14 reported YMGs and identified 10 new members of the AB Dor YMG and 2 of the Ursa Majoris group. Additional possible candidates include six Castor, four Ursa Majoris, two AB Dor members, and one member each of the Her-Lyr and {beta} Pic groups. Our sample also contains 27 young low-mass stars and 4 brown dwarfs with ages {approx}<150 Myr that are not associated with any known YMG. We identified an additional 15 stars that are kinematic matches to one of the YMGs, but the ages from spectroscopic diagnostics and/or the positions on the sky do not match. These warn against grouping stars together based only on kinematics and that a confluence of evidence is required to claim that a group of stars originated from the same star-forming event.

  17. Distances to Galactic high-velocity clouds. Complex C

    E-Print Network [OSTI]

    B. P. Wakker; D. G. York; J. C. Howk; J. C. Barentine; R. Wilhelm; R. F. Peletier; H. van Woerden; T. C. Beers; Z. Ivezic; P. Richter; U. J. Schwarz

    2007-10-17

    We report the first determination of a distance bracket for the high-velocity cloud (HVC) complex C. Combined with previous measurements showing that this cloud has a metallicity of 0.15 times solar, these results provide ample evidence that complex C traces the continuing accretion of intergalactic gas falling onto the Milky Way. Accounting for both neutral and ionized hydrogen as well as He, the distance bracket implies a mass of 3-14x10^6 M_sun, and the complex represents a mass inflow of 0.1-0.25 M_sun/yr. We base our distance bracket on the detection of CaII absorption in the spectrum of the blue horizontal branch star SDSS J120404.78+623345.6, in combination with a significant non-detection toward the BHB star BS 16034-0114. These results set a strong distance bracket of 3.7-11.2 kpc on the distance to complex C. A more weakly supported lower limit of 6.7 kpc may be derived from the spectrum of the BHB star BS 16079-0017.

  18. Time-delay Cosmography: Increased Leverage with Angular Diameter Distances

    E-Print Network [OSTI]

    Jee, Inh; Suyu, Sherry H; Huterer, Dragan

    2015-01-01

    Strong lensing time-delay systems constrain cosmological parameters via the so-called time-delay distance and the angular diameter distance to the lens. In previous studies, only the former information was used. In this paper, we show that the cosmological constraints improve significantly when the latter information is also included. Specifically, the angular diameter distance plays a crucial role in breaking the degeneracy between the curvature of the Universe and the time-varying equation of state of dark energy. Using a mock sample of 55 bright quadruple lens systems based on expectations for ongoing/future imaging surveys, we find that adding the angular diameter distance information to the time-delay distance information and the cosmic microwave background data of Planck improves the constraint on the constant equation of state by 30%, on the time variation in the equation of state by a factor of two, and on the Hubble constant in the flat $\\Lambda$CDM model by a factor of two. Therefore, previous forec...

  19. Ultra-wideband radios for time-of-flight-ranging and network position estimation

    DOE Patents [OSTI]

    Hertzog, Claudia A. (Houston, TX); Dowla, Farid U. (Castro Valley, CA); Dallum, Gregory E. (Livermore, CA); Romero, Carlos E. (Livermore, CA)

    2011-06-14

    This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.

  20. Evidence against correlations between nuclear decay rates and Earth-Sun distance

    E-Print Network [OSTI]

    Norman, Eric B.

    2009-01-01

    distance of the source to the Sun. This work was supportedNuclear Decay Rates and Earth-Sun Distance Eric B. Normanand 241 Am and the Earth-Sun distance. We find no evidence

  1. How Pseudo-Boolean Programming can help Genome Rearrangement Distance Computation

    E-Print Network [OSTI]

    Fertin, Guillaume

    How Pseudo-Boolean Programming can help Genome Rearrangement Distance Computation S vialette@lri.fr Abstract. Computing genomic distances between whole genomes is a fundamental problem in comparative genomics. Recent researches have resulted in different genomic distance definitions: number

  2. The Hubble Constant from the Fornax Cluster Distance

    E-Print Network [OSTI]

    Tom Richtler; Georg Drenkhahn; Matias Gomez; Wilhelm Seggewiss

    1999-05-17

    Type Ia supernovae are the best cosmological standard candles available. The intrinsic scatter of their decline-rate- and colour-corrected peak brightnesses in the Hubble diagram is within observational error limits, corresponding to an uncertainty of only 3km/s/Mpc of the Hubble constant. Any additional uncertainty, resulting from peak-brightness calibration, must be kept small by measuring distances to nearby host galaxies most precisely. A number of different distance determinations of the Fornax cluster of galaxies agree well on a distance modulus of 31.35+-0.04mag (18.6+-0.3Mpc). This leads to accurate absolute magnitudes of the well-observed Fornax type Ia SNe SN1980N, SN1981D, and SN1992A and finally to a Hubble constant of H_0=72+-6km/s/Mpc.

  3. Exploring the Graph of Graphs: Network Evolution and Centrality Distances

    E-Print Network [OSTI]

    Pignolet, Yvonne Anne; Schmid, Stefan; Tredan, Gilles

    2015-01-01

    The topological structure of complex networks has fascinated researchers for several decades, and today we have a fairly good understanding of the types and reoccurring characteristics of many different complex networks. However, surprisingly little is known today about models to compare complex graphs, and quantitatively measure their similarity and dynamics. In the past a variety of node centralities, i.e., functions which assign values to nodes to represent their importance in the graph. Based on such centralities we propose a natural similarity measure for complex networks: the centrality distance $d_C$, the difference between two graphs with respect to a given node centrality $C$. Centrality distances can take the specific roles of the different nodes in the network into account, and have many interesting applications. As a case study, we investigate the evolution of networks with respect to centrality distances and their approximations based on closeness, betweenness, pagerank, clustering and degree cen...

  4. Radar range measurements in the atmosphere.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2013-02-01

    The earth's atmosphere affects the velocity of propagation of microwave signals. This imparts a range error to radar range measurements that assume the typical simplistic model for propagation velocity. This range error is a function of atmospheric constituents, such as water vapor, as well as the geometry of the radar data collection, notably altitude and range. Models are presented for calculating atmospheric effects on radar range measurements, and compared against more elaborate atmospheric models.

  5. Lead exposure at uncovered outdoor firing ranges

    SciTech Connect (OSTI)

    Goldberg, R.L.; Hicks, A.M.; O'Leary, L.M.; London, S. (University of Southern California School of Medicine, Los Angeles (USA))

    1991-06-01

    Excessive lead exposure in shooting instructors at indoor firing ranges and covered outdoor firing ranges has been documented. The City of Los Angeles assessed exposure of its full-time shooting instructors at uncovered outdoor ranges via air monitoring and blood lead-level measurements. Results of these tests revealed that significant lead exposure and absorption can occur at outdoor firing ranges. The use of copper-jacketed ammunition may decrease air lead levels and decrease lead absorption by range instructors.

  6. Lysozyme Protein Solution with an Intermediate Range Order Structure

    SciTech Connect (OSTI)

    Liu, Yun [National Institute of Standards and Technology (NIST); Porcar, L. [National Institute of Standards and Technology (NIST); Chen, Wei-Ren [ORNL; Chen, Jinhong [Memorial Sloan-Kettering Cancer Center; Falus, Peter [ORNL; Fratini, Emiliano [University of Florence; Faraone, Antonio [National Institute of Standards and Technology (NIST); Baglioni, P [University of Florence

    2011-01-01

    The formation of equilibrium clusters has been studied in both a prototypical colloidal system and protein solutions. The appearance of a low-Q correlation peak in small angle scattering patterns of lysozyme solution was attributed to the cluster-cluster correlation. Consequently, the presence of long-lived clusters has been established. By quantitatively analyzing both the SANS (small angle neutron scattering) and NSE (neutron spin echo) data of lysozyme solution using statistical mechanics models, we conclusively show in this paper that the appearance of a low-Q peak is not a signature of the formation of clusters. Rather, it is due to the formation of an intermediate range order structure governed by a short-range attraction and a long-range repulsion. We have further studied dynamic features of a sample with high enough concentration at which clusters are formed in solution. From the estimation of the mean square displacement by using short-time and long-time diffusion coefficient measured by NSE and NMR, we find that these clusters are not permanent but have a finite lifetime longer than the time required to diffuse over a distance of a monomer diameter.

  7. Laser-Ranging Long Baseline Differential Atom Interferometers for Space

    E-Print Network [OSTI]

    Chiow, Sheng-wey; Yu, Nan

    2015-01-01

    High sensitivity differential atom interferometers are promising for precision measurements in science frontiers in space, including gravity field mapping for Earth science studies and gravitational wave detection. We propose a new configuration of twin atom interferometers connected by a laser ranging interferometer (LRI-AI) to provide precise information of the displacements between the two AI reference mirrors and a means to phase-lock the two independent interferometer lasers over long distances, thereby further enhancing the feasibility of long baseline differential atom interferometers. We show that a properly implemented LRI-AI can achieve equivalent functionality to the conventional differential atom interferometer measurement system. LRI-AI isolates the laser requirements for atom interferometers and for optical phase readout between distant locations, thus enabling optimized allocation of available laser power within a limited physical size and resource budget. A unique aspect of LRI-AI also enables...

  8. Development of the table of initial isolation distances and protective action distances for the 2004 emergency response guidebook.

    SciTech Connect (OSTI)

    Brown, D. F.; Freeman, W. A.; Carhart, R. A.; Krumpolc, M.; Decision and Information Sciences; Univ. of Illinois at Chicago

    2005-09-23

    This report provides technical documentation for values in the Table of Initial Isolation and Protective Action Distances (PADs) in the 2004 Emergency Response Guidebook (ERG2004). The objective for choosing the PADs specified in the ERG2004 is to balance the need to adequately protect the public from exposure to potentially harmful substances against the risks and expenses that could result from overreacting to a spill. To quantify this balance, a statistical approach is adopted, whereby the best available information is used to conduct an accident scenario analysis and develop a set of up to 1,000,000 hypothetical incidents. The set accounts for differences in containers types, incident types, accident severity (i.e., amounts released), locations, times of day, times of year, and meteorological conditions. Each scenario is analyzed using detailed emission rate and atmospheric dispersion models to calculate the downwind chemical concentrations from which a 'safe distance' is determined. The safe distance is defined as the distance downwind from the source at which the chemical concentration falls below health protection criteria. The American Industrial Hygiene Association's Emergency Response Planning Guideline Level 2 (ERPG-2) or equivalent is the health criteria used. The statistical sample of safe distance values for all incidents considered in the analysis are separated into four categories: small spill/daytime release, small spill/nighttime release, large spill/daytime release, and large spill/nighttime release. The 90th-percentile safe distance values for each of these groups became the PADs that appear in the ERG2004.

  9. Online Distance Recovery for a Sewer Inspection Robot Marina Kolesnik

    E-Print Network [OSTI]

    Kolesnik, Marina

    Online Distance Recovery for a Sewer Inspection Robot Marina Kolesnik Institute for Autonomous computation based on images taken in a sewer by a robot-inspector is presented. Modern concrete sewers provide regular marks on the sewer images and can be used for their 3-D interpretation. After each robot

  10. On the White Dwarf distances to Galactic Globular Clusters

    E-Print Network [OSTI]

    M. Salaris; S. Cassisi; E. Garcia-Berro; J. Isern; S. Torres

    2001-03-20

    We analyze in detail various possible sources of systematic errors on the distances of globular clusters derived by fitting a local template DA white dwarf sequence to the cluster counterpart (the so-called WD-fitting technique). We find that the unknown thickness of the hydrogen layer of white dwarfs in clusters plays a non negligible role. For reasonable assumptions - supported by the few sparse available observational constraints - about the unknown mass and thickness of the hydrogen layer for the cluster white dwarfs, a realistic estimate of the systematic error on the distance is within +-0.10 mag. However, particular combinations of white dwarf masses and envelope thicknesses - which at present cannot be excluded a priori - could produce larger errors. Contamination of the cluster DA sequence by non-DA white dwarfs introduces a very small systematic error of about -0.03 mag in the Mv/(V-I) plane, but in the Mv/(B-V) plane the systematic error amounts to ~ +0.20 mag. Contamination by white dwarfs with helium cores should not influence appreciably the WD-fitting distances. Finally, we obtain a derivative D((m-M)v)/D(E(B-V))~ -5.5 for the WD-fitting distances, which is very similar to the dependence found when using the Main Sequence fitting technique.

  11. Defense from a distance ORNL robotics sensors detect underwater

    E-Print Network [OSTI]

    SCIENCE Defense from a distance ORNL robotics sensors detect underwater explosive ordnance Modern of the future are not human oriented, but robotics oriented. For robots to perform their mission of safety at the forefront of robotics design, these are the droids we are looking for. Dylan Platz Karnowski analyzes

  12. GIS IN LAND RESOURCE MANAGEMENT Distance Education Section

    E-Print Network [OSTI]

    Ma, Lena

    1 GIS IN LAND RESOURCE MANAGEMENT SWS 5721C Distance Education Section [GIS: Geographic Information, reading material, library of GIS video clips, and GIS resources) Email and discussion board are used communication): Chat sessions: Thursday 8-9 p.m. US Eastern Time. A virtual computer lab is used for GIS

  13. The breakpoint distance for signed sequences (extended abstract)

    E-Print Network [OSTI]

    Chauve, Cedric

    of reversals, insertion and deletion between two genomes, G and H with possibly multiple genes from the same the evolutionary distance between genomes in terms of gene order rearrangements has been intensively studied, from in comparative genomics [2]. From an algorithmic point, it can roughly be de#12;ned as follows: given a set

  14. Detecting VoIP Floods Using the Hellinger Distance

    E-Print Network [OSTI]

    Wang, Haining

    Detecting VoIP Floods Using the Hellinger Distance Hemant Sengar, Student Member, IEEE, Haining running over the TCP/IP suite, it is susceptible to flooding attacks. If flooded, as a time. Because multiple protocols are involved in a VoIP service and most of them are susceptible to flooding

  15. Topographic Distance Functions for Interpolation of Meteorological Data

    E-Print Network [OSTI]

    Hamann, Bernd

    Topographic Distance Functions for Interpolation of Meteorological Data Burkhard Lehner1 , Georg evapotranspiration ET0. It is usually estimated from other meteorological quantities measured at weather stations for agricultural and urban needs. Also for setting up a land use plan it can be a base for decisions. One important

  16. 75Radiation Dose and Distance This iconic photo was

    E-Print Network [OSTI]

    on March 15, a few days after the Japan 2011 earthquake, which caused severe damage to the Fukushima Press/Kyodo News) The devastating Japan 2011 earthquake damaged the nuclear reactors in Fukushima, which: Date Distance (km) Location Dose Rate (microSeiverts/hr) March 15 1 km Fukushima #2 plant 8,200 March

  17. Weighted Distance Weighted Discrimination and its Asymptotic Properties

    E-Print Network [OSTI]

    Zhang, Hao "Helen"

    and Phrases: Fisher consistency; High-dimensional, low-sample size data; Linear discrimination; Non-standard Carolina Center for Genome Sciences, University of North Carolina, Chapel Hill, NC 27599 4 School The Support Vector Machine (SVM) (Vapnik 1995) is a powerful classification tool. Distance Weighted

  18. Computing the minimal distance of cyclic codes Jose Felipe Voloch

    E-Print Network [OSTI]

    Voloch, Felipe

    , 0 r r and compute a table of all codewords with exactly r nonzero coordinates among its first k below. Chen produced a table of the minimal distances of binary cyclic codes of length at most 65 which shift of c with exactly r nonzero coordinates among its first k coordinates. See [CS, lemma 1

  19. THE FIRST ACCURATE PARALLAX DISTANCE TO A BLACK HOLE

    E-Print Network [OSTI]

    Miller-Jones, J. C. A.

    Using astrometric VLBI observations, we have determined the parallax of the black hole X-ray binary V404 Cyg to be 0.418 [plus or minus sign] 0.024 mas, corresponding to a distance of 2.39 [plus or minus sign] 0.14 kpc, ...

  20. TRIUMAH 2012 RESULTS MALES BY AGE * distance measured in miles

    E-Print Network [OSTI]

    Thomas, David D.

    TRIUMAH 2012 RESULTS MALES BY AGE * distance measured in miles Last Name First Name Swim Bike Run+ Ferber Warren 0.364 7.390 2.300 10.054 50+ Luther Richard 0.500 6.900 2.420 9.820 Ages Other Strom Thad 0

  1. Free Energy Surfaces from Single-Distance Information Philipp Schuetz,

    E-Print Network [OSTI]

    Caflisch, Amedeo

    Free Energy Surfaces from Single-Distance Information Philipp Schuetz, Rene Wuttke, Benjamin We propose a network-based method for determining basins and barriers of complex free energy surfaces for the iterative determination of individual basins by the minimum-cut-based free energy profile, a barrier

  2. Distance Estimation Using Bidirectional Communications Without Synchronous Clocking

    E-Print Network [OSTI]

    Sethares, William A.

    Estimation via Asynchronous Clocks (DEVAC) and (2) Distance Estimation via Asynchronous Phase Shift (DEVAPS a reply that acts analogously to the return of the radar. The DEVAPS method operates analogously and frequency accuracy are computed to show the limits of performance with the DEVAPS method. The analytical

  3. The Exemplar Breakpoint Distance for nontrivial genomes cannot be approximated

    E-Print Network [OSTI]

    Fertin, Guillaume

    The Exemplar Breakpoint Distance for non­trivial genomes cannot be approximated Guillaume Blin 1 ­ France guillaume.fertin@univ­nantes.fr Abstract. A promising and active field of comparative genomics con­ sists in comparing two genomes by establishing a one­to­one correspon­ dence (i.e., a matching) between

  4. Of mice and men: Algorithms for evolutionary distances

    E-Print Network [OSTI]

    Kececioglu, John

    Of mice and men: Algorithms for evolutionary distances between genomes with translocation \\Lambda is combinatorial algorithms for genome rear­ rangement. In the course of its evolution, the genome of an organism is to determine the minimum number of such events that transform one genome to another. This number is called

  5. On the Impact of Cepheid Outliers on the Distance Ladder

    E-Print Network [OSTI]

    Becker, M R; Rozo, E; Marshall, P; Rykoff, E S

    2015-01-01

    Recent work by Efstathiou (2014) highlighted the importance of outliers in the period-luminosity (PL) relation of Cepheid data on the distance ladder. We present a statistical framework designed to address this difficulty, and apply it to the Cepheid data from the Milky Way (MW), the Large Magellanic Cloud (LMC), and the Riess et al. (2011) (hereafter R11) dataset. We consider two possible models of the outlier population in the R11 Cepheid dataset. One of these models exhibits tension between the PL relation of the R11 cepheids and the MW+LMC cepheids, while the other does not. We extend our models to adequately account for tension between the cepheid data sets when appropriate. Our outlier treatment has a significant impact on the distance scales to Supernovae hosts with Cepheid distances, increasing the uncertainty in these distances by a median factor of ~30%. We further find that our Cepheid outlier treatment translates into a modest, but non-negligible increase in the statistical uncertainty of H0, addi...

  6. Detecting Anomalies in Unmanned Vehicles Using the Mahalanobis Distance

    E-Print Network [OSTI]

    Kaminka, Gal A.

    the vehicles deviations from nominal behavior. I. INTRODUCTION Unmanned Aerial Vehicles (UAVs) and UnmannedDetecting Anomalies in Unmanned Vehicles Using the Mahalanobis Distance Raz Lin, Eliyahu Khalastchi 52900 {linraz,galk}@cs.biu.ac.il Abstract-- The use of unmanned autonomous vehicles is becoming more

  7. A torsion balance for probing a non-standard force in the sub-micrometre range

    E-Print Network [OSTI]

    Masuda, M; Araya, A

    2015-01-01

    We report the performance of an instrument that employs a torsion balance for probing a non-standard force in the sub-micrometre range. High sensitivity is achieved by using a torsion balance that has a long torsional period, strong magnetic damping of all vibrational motions and a feedback system that employs an optical lever. In torsion balance experiments, the distance fluctuations during measurements and the accuracy to which the absolute distance is determined are crucial for determining the sensitivity of the balance to a macroscopic force in the sub-micrometre range. We have estimated the root mean square amplitude of the distance fluctuation to be 18 nm by considering the effects due to seismic motions, tilt motions, residual angular fluctuations and thermal fluctuations. We have also estimated the error of the absolute distance to be 13 nm and the statistical error of the force to be 3.4$\\times$10$^{-12}$ N by measuring the electrostatic forces. As a result of this systematic study, we have evaluated...

  8. Modelling long-distance seed dispersal in heterogeneous landscapes.

    SciTech Connect (OSTI)

    Levey, Douglas, J.; Tewlsbury, Joshua, J.; Bolker, Benjamin, M.

    2008-01-01

    1. Long-distance seed dispersal is difficult to measure, yet key to understanding plant population dynamics and community composition. 2. We used a spatially explicit model to predict the distribution of seeds dispersed long distances by birds into habitat patches of different shapes. All patches were the same type of habitat and size, but varied in shape. They occurred in eight experimental landscapes, each with five patches of four different shapes, 150 m apart in a matrix of mature forest. The model was parameterized with smallscale movement data collected from field observations of birds. In a previous study we validated the model by testing its predictions against observed patterns of seed dispersal in real landscapes with the same types and spatial configuration of patches as in the model. 3. Here we apply the model more broadly, examining how patch shape influences the probability of seed deposition by birds into patches, how dispersal kernels (distributions of dispersal distances) vary with patch shape and starting location, and how movement of seeds between patches is affected by patch shape. 4. The model predicts that patches with corridors or other narrow extensions receive higher numbers of seeds than patches without corridors or extensions. This pattern is explained by edgefollowing behaviour of birds. Dispersal distances are generally shorter in heterogeneous landscapes (containing patchy habitat) than in homogeneous landscapes, suggesting that patches divert the movement of seed dispersers, holding them long enough to increase the probability of seed defecation in the patches. Dispersal kernels for seeds in homogeneous landscapes were smooth, whereas those in heterogenous landscapes were irregular. In both cases, long-distance (> 150 m) dispersal was surprisingly common, usually comprising approximately 50% of all dispersal events. 5. Synthesis . Landscape heterogeneity has a large influence on patterns of long-distance seed dispersal. Our results suggest that long-distance dispersal events can be predicted using spatially explicit modelling to scale-up local movements, placing them in a landscape context. Similar techniques are commonly used by landscape ecologists to model other types of movement; they offer much promise to the study of seed dispersal.

  9. Nuclear Physics Long Range Plan | Jefferson Lab

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

    Nuclear Physics Long Range Plan June 26, 2014 For a couple of years now, we have been waiting to get started on the next nuclear physics long range plan (LRP). What does that mean?...

  10. Viking Range: Order (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE ordered Viking Range, LLC to pay a $8,000 civil penalty after finding Viking Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  11. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  12. Range Fuels Commercial-Scale Biorefinery

    Broader source: Energy.gov [DOE]

    The Range Fuels commercial-scale biorefinery will use a variety of feedstocks to create cellulosic ethanol, methanol, and power.

  13. Long Range Force Transmission in Fibrous Matrices Enabled by Tension-Driven Alignment of Fibers

    E-Print Network [OSTI]

    Hailong Wang; Abhilash Nair; Christopher S. Chen; Rebecca G. Wells; Vivek B. Shenoy

    2014-09-23

    Cells can sense and respond to mechanical signals over relatively long distances across fibrous extracellular matrices. Here, we explore all of the key factors that influence long range force transmission in cell-populated collagen matrices: alignment of collagen fibers, responses to applied force, strain stiffening properties of the aligned fibers, aspect ratios of the cells, and the polarization of cellular contraction. A constitutive law accounting for mechanically-driven collagen fiber reorientation is proposed. We systematically investigate the range of collagen fiber alignment using both finite element simulations and analytical calculations. Our results show that tension-driven collagen fiber alignment plays a crucial role in force transmission. Small critical stretch for fiber alignment, large fiber stiffness and fiber strain hardening behavior enable long-range interaction. Furthermore, the range of collagen fiber alignment for elliptical cells with polarized contraction is much larger than that for spherical cells with diagonal contraction. A phase diagram showing the range of force transmission as a function of cell shape and polarization and matrix properties is presented. Our results are in good agreement with recent experiments, and highlight the factors that influence long-range force transmission, in particular tension-driven alignment of fibers. Our work has important relevance to biological processes including development, cancer metastasis and wound healing, suggesting conditions whereby cells communicate over long distances.

  14. HZ Her: Stellar radius from X-ray eclipse observations, evolutionary state, and a new distance

    SciTech Connect (OSTI)

    Leahy, D. A.; Abdallah, M. H. [Department of Physics, University of Calgary, Calgary, Alberta T2N 1N4 (Canada)

    2014-10-01

    Observations of HZ Her/Her X-1 by the Rossi X-Ray Timing Explorer (RXTE) covering high state eclipses of the neutron star are analyzed here. Models of the eclipse are used to measure the radius and atmospheric scale height of HZ Her, the stellar companion to the neutron star. The radius is 2.58-3.01 10{sup 11} cm, depending on system inclination and mass ratio (q), with an accuracy of ?1 part in 1000 for given inclination and q. We fit Kurucz model stellar atmosphere models to archival optical observations. The resulting effective temperature (T {sub eff}) of the unheated face of HZ Her is determined to be in the 2? range of 7720 K-7865 K, and metallicity (log (Z/Z {sub ?})) in the range of 0.27 to +.03. The model atmosphere surface flux and new radius yield a new distance to HZ Her/Her X-1, depending on system inclination and q: a best-fit value of 6.1 kpc with upper and lower limits of 5.7 kpc and 7.0 kpc. We calculate stellar evolution models for the range of allowed masses (from orbital parameters) and allowed metallicities (from optical spectrum fits). The stellar models agree with T {sub eff} and the radius of HZ Her for two narrow ranges of mass: 2.15-2.20 M {sub ?} and 2.35-2.45 M {sub ?}. This lower mass range implies a low neutron star mass (1.3 M {sub ?}), whereas the higher mass range implies a high neutron star mass (1.5-1.7 M {sub ?}).

  15. NREL Reveals Links Among Climate Control, Battery Life, and Electric Vehicle Range (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-06-01

    Researchers at the National Renewable Energy Laboratory (NREL) are providing new insights into the relationships between the climate-control systems of plug-in electric vehicles and the distances these vehicles can travel on a single charge. In particular, NREL research has determined that 'preconditioning' a vehicle-achieving a comfortable cabin temperature and preheating or precooling the battery while the vehicle is still plugged in-can extend its driving range and improve battery life over the long term.

  16. Current Short-Range Tests of the Gravitational Inverse Square Law

    E-Print Network [OSTI]

    Joshua C. Long; John C. Price

    2003-04-04

    Motivated in large part by the possibility of observing signatures of compact extra dimensions, experimental searches for deviations from Newtonian gravity at short distances have improved in sensitivity by many orders of magnitude in the past five years. We review the essential features of the experiments responsible for the current limits on new effects in the range from a few microns to a few centimeters, and discuss prospects for the near future.

  17. Low-Energy Nuclear Reactions of Protons in Host Metals at Picometre Distance

    SciTech Connect (OSTI)

    Heinrich Hora; George H. Miley; Jak C. Kelly

    2000-11-12

    A review is given for the explanation of the measurements of Miley et al. of a fully reproducible generation of nuclei of the whole periodic table by protons in host metals during a several-weeks reaction. Similar low-energy nuclear reactions (LENR) were observed by other groups. The fact that the heavy nuclides are not due to pollution can be seen from the fact that such very rare elements as thulium and terbium were detected by unique K-shell X-ray spectra. The nuclear reaction energy goes into the heavy nuclei as measured from much bigger traces in CR39 than from alphas. The fact that any reaction of the protons results in stable daughter nuclei is confirmed by the fact that the highest energy gain is resulting with stable reaction products. This has been explained in Ref. 2, and the energy gain for the heavy element generation by a compound reaction was discussed. The explanation is based on the model of the authors from 1989 to assume free motion of the protons contrary to localized crystalline states. A relation of the reaction time U on distance d of the reacting nuclei by a power law with an exponent 34.8 was derived. Based on few reproducible D-D reactions, a reaction time near the range of megaseconds and a reaction distance of nanometers was concluded. A splendid confirmation of the picometre-megasecond reactions was achieved by Li et al. from his direct quantum mechanical calculations of the hot fusion D-T reactions based on a one-step selective resonance tunneling model. Li et al. were able for the first time to derive the cross sections of the hot fusion. Li's application to picometre distance showed megasecond reaction times with no neutron or gamma emission. Because of the imaginary part in the Schroedinger potential, the problem of the level width is reduced by damping.

  18. An Accurate Distance to High-Velocity Cloud Complex C

    E-Print Network [OSTI]

    C. Thom; J. E. G. Peek; M. E. Putman; Carl Heiles; K. M. G. Peek; R. Wilhelm

    2008-04-23

    We report an accurate distance of d = 10+/-2.5kpc to the high-velocity cloud Complex C. Using high signal-to-noise Keck/HIRES spectra of two horizontal-branch stars, we have detected CaII K absorption lines from the cloud. Significant non-detections toward a further 3 stars yield robust lower distance limits. The resulting HI mass of Complex C is 4.9^{+2.8}_{-2.2} x 10^6 Msun; a total mass of 8.2^{+4.6}_{-2.6} x 10^6 Msun is implied, after corrections for helium and ionization. At 10kpc, Complex C has physical dimensions 3x15 kpc, and if it is as thick as it is wide, then the average density is log ~ -2.5. We estimate the contribution of Complex C to the mass influx may be as high as ~0.14 Msun/yr.

  19. A New Resource for College Distance Education Astronomy Laboratory Exercises

    E-Print Network [OSTI]

    Vogt, Nicole P; Muise, Amy Smith

    2015-01-01

    This article introduces a set of distance education astronomy laboratory exercises for use by college students and instructors and discuss first usage results. This General Astronomy Education Source (GEAS) exercise set contains eight two-week projects designed to guide students through both core content and mathematical applications of general astronomy material. Projects are divided between hands-on activities and computer-aided analyses of modern astronomical data. The suite of online resources includes student and instructor guides, laboratory report templates, learning objectives, video tutorials, plotting tools, and web-based applications that allow students to analyze both images and spectra of astronomical objects. A pilot usage study indicates that distance learners using these materials perform as well or better than a comparison cohort of on-campus students. We are actively seeking collaborators to use these resources in astronomy courses and other educational venues.

  20. Distance Priors from \\emph{Planck} 2015 data

    E-Print Network [OSTI]

    Qing-Guo Huang; Ke Wang; Sai Wang

    2015-09-03

    We update the distance priors by adopting $Planck~ \\textrm{TT,TE,EE}+\\textrm{lowP}$ data released in 2015, and our results impose at least $30\\%$ tighter constraints than those from $Planck~ \\textrm{TT}+\\textrm{lowP}$. Combining the distance priors with the combination of supernova Union~2.1 compilation of 580 SNe (Union~2.1) and low redshift Baryon Acoustic Oscillation (BAO) data, we constrain the cosmological parameters in the freely binned dark energy (FBDE) and FBDE$+\\Omega_k$ models respectively, and find that the equations of state of dark energy in both models are consistent with $w=-1$. Furthermore, we show that the tension with the BAO data at $z=2.34$ from Ly$\\alpha$ forest (Ly$\\alpha$F) auto-correlation and Combined Ly$\\alpha$F cannot be relaxed in the FBDE and FBDE$+\\Omega_k$ models.

  1. Gromov-Hausdorff Distance for Quantum Metric Spaces

    E-Print Network [OSTI]

    Marc A. Rieffel

    2003-02-20

    By a quantum metric space we mean a C^*-algebra (or more generally an order-unit space) equipped with a generalization of the Lipschitz seminorm on functions which is defined by an ordinary metric. We develop for compact quantum metric spaces a version of Gromov-Hausdorff distance. We show that the basic theorems of the classical theory have natural quantum analogues. Our main example involves the quantum tori, $A_{\\th}$. We show, for consistently defined ``metrics'', that if a sequence $\\{\\th_n\\}$ of parameters converges to a parameter $\\th$, then the sequence $\\{A_{\\th_n}\\}$ of quantum tori converges in quantum Gromov-Hausdorff distance to $A_{\\th}$.

  2. A characterization of Q-polynomial distance-regular graphs

    E-Print Network [OSTI]

    Jurisic, Aleksandar; Zitnik, Arjana

    2009-01-01

    We obtain the following characterization of $Q$-polynomial distance-regular graphs. Let $\\G$ denote a distance-regular graph with diameter $d\\ge 3$. Let $E$ denote a minimal idempotent of $\\G$ which is not the trivial idempotent $E_0$. Let $\\{\\theta_i^*\\}_{i=0}^d$ denote the dual eigenvalue sequence for $E$. We show that $E$ is $Q$-polynomial if and only if (i) the entry-wise product $E \\circ E$ is a linear combination of $E_0$, $E$, and at most one other minimal idempotent of $\\G$; (ii) there exists a complex scalar $\\beta$ such that $\\theta^*_{i-1}-\\beta \\theta^*_i + \\theta^*_{i+1}$ is independent of $i$ for $1 \\le i \\le d-1$; (iii) $\\theta^*_i \

  3. Scanning optical microscope with long working distance objective

    DOE Patents [OSTI]

    Cloutier, Sylvain G. (Newark, DE)

    2010-10-19

    A scanning optical microscope, including: a light source to generate a beam of probe light; collimation optics to substantially collimate the probe beam; a probe-result beamsplitter; a long working-distance, infinity-corrected objective; scanning means to scan a beam spot of the focused probe beam on or within a sample; relay optics; and a detector. The collimation optics are disposed in the probe beam. The probe-result beamsplitter is arranged in the optical paths of the probe beam and the resultant light from the sample. The beamsplitter reflects the probe beam into the objective and transmits resultant light. The long working-distance, infinity-corrected objective is also arranged in the optical paths of the probe beam and the resultant light. It focuses the reflected probe beam onto the sample, and collects and substantially collimates the resultant light. The relay optics are arranged to relay the transmitted resultant light from the beamsplitter to the detector.

  4. Light deflection in Weyl gravity: critical distances for photon paths

    E-Print Network [OSTI]

    S. Pireaux

    2004-03-16

    The Weyl gravity appears to be a very peculiar theory. The contribution of the Weyl linear parameter to the effective geodesic potential is opposite for massive and nonmassive geodesics. However, photon geodesics do not depend on the unknown conformal factor, unlike massive geodesics. Hence light deflection offers an interesting test of the Weyl theory. In order to investigate light deflection in the setting of Weyl gravity, we first distinguish between a weak field and a strong field approximation. Indeed, the Weyl gravity does not turn off asymptotically and becomes even stronger at larger distances. We then take full advantage of the conformal invariance of the photon effective potential to provide the key radial distances in Weyl gravity. According to those, we analyze the weak and strong field regime for light deflection. We further show some amazing features of the Weyl theory in the strong regime.

  5. THE MEMBERSHIP AND DISTANCE OF THE OPEN CLUSTER COLLINDER 419

    SciTech Connect (OSTI)

    Roberts, Lewis C.; Gies, Douglas R.; Parks, J. Robert; Grundstrom, Erika D.; McSwain, M. Virginia; Berger, David H.; Mason, Brian D.; Ten Brummelaar, Theo A.; Turner, Nils H. E-mail: gies@chara.gsu.ed E-mail: erika.grundstrom@vanderbilt.ed E-mail: dberger@sysplan.co E-mail: theo@chara-array.or

    2010-09-15

    The young open cluster Collinder 419 surrounds the massive O star, HD 193322, that is itself a remarkable multiple star system containing at least four components. Here we present a discussion of the cluster distance based upon new spectral classifications of the brighter members, UBV photometry, and an analysis of astrometric and photometric data from the third U. S. Naval Observatory CCD Astrograph Catalog and Two Micron All Sky Survey Catalog. We determine an average cluster reddening of E(B - V) = 0.37 {+-} 0.05 mag and a cluster distance of 741 {+-} 36 pc. The cluster probably contains some very young stars that may include a reddened M3 III star, IRAS 20161+4035.

  6. Short distance signatures in Cosmology: Why not in Black Holes?

    E-Print Network [OSTI]

    Roberto Casadio; Laura Mersini

    2002-08-07

    Current theoretical investigations seem to indicate the possibility of observing signatures of short distance physics in the Cosmic Microwave Background spectrum. We try to gain a deeper understanding on why all information about this regime is lost in the case of Black Hole radiation but not necessarily so in a cosmological setting by using the moving mirror as a toy model for both backgrounds. The different responses of the Hawking and Cosmic Microwave Background spectra to short distance physics are derived in the appropriate limit when the moving mirror mimics a Black Hole background or an expanding universe. The different sensitivities to new physics, displayed by both backgrounds, are clarified through an averaging prescription that accounts for the intrinsic uncertainty in their quantum fluctuations. We then proceed to interpret the physical significance of our findings for time-dependent backgrounds in the light of nonlocal string theory.

  7. Tonopah Test Range capabilities: technical manual

    SciTech Connect (OSTI)

    Manhart, R.L.

    1982-11-01

    This manual describes Tonopah Test Range (TTR), defines its testing capabilities, and outlines the steps necessary to schedule tests on the Range. Operated by Sandia National Laboratories, TTR is a major test facility for DOE-funded weapon programs. The Range presents an integrated system for ballistic test vehicle tracking and data acquisition. Multiple radars, optical trackers, telemetry stations, a central computer complex, and combined landline/RF communications systems assure full Range coverage for any type of test. Range operations are conducted by a department within Sandia's Field Engineering Directorate. While the overall Range functions as a complete system, it is operationally divided into the Test Measurements, Instrumentation Development, and Range Operations divisions. The primary function of TTR is to support DOE weapons test activities. Management, however, encourages other Government agencies and their contractors to schedule tests on the Range which can make effective use of its capabilities. Information concerning Range use by organizations outside of DOE is presented. Range instrumentation and support facilities are described in detail. This equipment represents the current state-of-the-art and reflects a continuing commitment by TTR management to field the most effective tracking and data acquisition system available.

  8. Evaluating a Master's Degree Program via Distance Education

    E-Print Network [OSTI]

    Lara-Alecio, Rafael; Kemp, Janie; Treviñ o, Polly; Tong, Fuhui; Castillo, Raymond

    2010-10-22

    -1 Evaluating a Master?s Degree Program via Distance Education Dr. Rafael Lara-Alecio Janie Kemp Polly Trevi?o Fuhui Tong Raymond Castillo TTVN Conference Galveston, TX January 18, 2006 Texas A&M University Bilingual Education Program Dept... and High School Levels Online Program Texas A&M University Bilingual Education Programs ? Undergraduate Program ? Currently 105 undergraduate students working toward teaching degree and certification in Bil/ESL ? Master?s Program ? First Master?s...

  9. Time, Distance, Velocity, Redshift: a personal guided tour

    E-Print Network [OSTI]

    T. Kiang

    2003-08-01

    An attempt to answer the question 'Can we observe galaxies that recede faster than light ?' led to a re-examination of the notions of time, distance, velocity and redshift as they occur in newtonian physics, special relativity, general relativity and cosmology. A number of misconceptions were uncovered. It was found that, once freed of special relativity preconceptions, the above question is easily and unequivocally answered

  10. Dynamic Rotor Deformation and Vibration Monitoring Using a Non-Incremental Laser Doppler Distance Sensor

    SciTech Connect (OSTI)

    Pfister, Thorsten; Guenther, Philipp; Dreier, Florian; Czarske, Juergen

    2010-05-28

    Monitoring rotor deformations and vibrations dynamically is an important task for improving the safety and the lifetime as well as the energy efficiency of motors and turbo machines. However, due to the high rotor speed encountered in particular at turbo machines, this requires concurrently a high measurement rate and high accuracy, which can not be fulfilled by most commercially available sensors. To solve this problem, we developed a non-incremental laser Doppler distance sensor (LDDS), which is able to measure simultaneously the in-plane velocity and the out-of-plane position of moving rough solid objects with micrometer precision. In addition, this sensor concurrently offers a high temporal resolution in the microsecond range, because its position uncertainty is in principle independent of the object velocity in contrast to conventional distance sensors, which is a unique feature of the LDDS. Consequently, this novel sensor enables precise and dynamic in-process deformation and vibration measurements on rotating objects, such as turbo machine rotors, even at very high speed. In order to evidence the capability of the LDDS, measurements of rotor deformations (radial expansion), vibrations and wobbling motions are presented at up to 50,000 rpm rotor speed.

  11. AN IMPROVED METHOD TO TEST THE DISTANCE-DUALITY RELATION

    SciTech Connect (OSTI)

    Yang, Xi; Yu, Hao-Ran; Zhang, Tong-Jie [Department of Astronomy, Beijing Normal University, Beijing 100875 (China)] [Department of Astronomy, Beijing Normal University, Beijing 100875 (China); Zhang, Zhi-Song, E-mail: tjzhang@bnu.edu.cn [Department of Aerospace Engineering, School of Astronautics, Harbin Institute of Technology (HIT), Harbin Heilongjiang 150001 (China)] [Department of Aerospace Engineering, School of Astronautics, Harbin Institute of Technology (HIT), Harbin Heilongjiang 150001 (China)

    2013-11-10

    Many researchers have performed cosmological-model-independent tests for the distance-duality (DD) relation. Theoretical work has been conducted based on the results of these tests. However, we find that almost all of these tests were perhaps not cosmological-model-independent after all, because the distance moduli taken from a given type Ia supernovae (SNe Ia) compilation are dependent on a given cosmological model and Hubble constant. In this Letter, we overcome these defects and by creating a new cosmological-model-independent test for the DD relation. We use the original data from the Union2 SNe Ia compilation and the angular diameter distances from two galaxy cluster samples compiled by De Filippis et al. and Bonamente et al. to test the DD relation. Our results suggest that the DD relation is compatible with observations, and the spherical model is slightly better than the elliptical model at describing the intrinsic shape of galaxy clusters if the DD relation is valid. However, these results are different from those of previous work.

  12. Range Design Criteria- June 4, 2012

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document contains the currently-approved firearms "Range Design Criteria" referred to on DOE O 473.3, Protection Program Operations

  13. EM Tackles Cleanup at Tonopah Test Range

    Broader source: Energy.gov [DOE]

    NEVADA Environmental cleanup experts spent the last weeks of summer on the Tonopah Test Range addressing contaminated equipment and debris at two historical nuclear testing locations.

  14. Formulating and Implementing Profiling over Adaptive Ranges

    E-Print Network [OSTI]

    Sherwood, Tim

    be implemented for range-adaptive profiling. RAP can be used on various profiles, such as PCs, load values may easily be lost in a sea of data. We present range-adaptive profiling (RAP) as a new and general value locality. We propose two methods of implementation of RAP, one in software and the other

  15. Peer Pressure: Exerting Malicious Influence on Routers at a Distance

    E-Print Network [OSTI]

    Hopper, Nicholas J.

    . INTRODUCTION Routers are a critical piece of the Internet infrastructure. They provide path discovery modes, ranging from severe performance degradation to the unrecoverable failure of all active routing

  16. Range gated imaging experiments using gated intensifiers

    SciTech Connect (OSTI)

    McDonald, T.E. Jr.; Yates, G.J.; Cverna, F.H.; Gallegos, R.A.; Jaramillo, S.A.; Numkena, D.M.; Payton, J.; Pena-Abeyta, C.R.

    1999-03-01

    A variety of range gated imaging experiments using high-speed gated/shuttered proximity focused microchannel plate image intensifiers (MCPII) are reported. Range gated imaging experiments were conducted in water for detection of submerged mines in controlled turbidity tank test and in sea water for the Naval Coastal Sea Command/US Marine Corps. Field experiments have been conducted consisting of kilometer range imaging of resolution targets and military vehicles in atmosphere at Eglin Air Force Base for the US Air Force, and similar imaging experiments, but in smoke environment, at Redstone Arsenal for the US Army Aviation and Missile Command (AMCOM). Wavelength of the illuminating laser was 532 nm with pulse width ranging from 6 to 12 ns and comparable gate widths. These tests have shown depth resolution in the tens of centimeters range from time phasing reflected LADAR images with MCPII shutter opening.

  17. Effective range from tetramer dissociation data

    E-Print Network [OSTI]

    Hadizadeh, M R; Tomio, Lauro; Delfino, A; Frederico, T

    2012-01-01

    The shifts in the four-body recombination peaks, due to lowest order range corrections in the zero range results close to the unitary limit, are obtained and used to extract the corresponding effective range of a given atomic system. From the experimental values of the tetramer dissociation positions of an ultracold gas of cesium atoms close to broad Feshbach resonances, the effective ranges are extracted, with a weighted average given by 3.9$\\pm 0.8 R_{{vdW}}$, where $R_{{vdW}}$ is the van der Waals length scale. This result is consistent with the van der Waals potential tail for the $Cs_2$ system. The method can be generally applied to other cold atom experimental setups to determine the corresponding effective range.

  18. High speed, long distance, data transmission multiplexing circuit

    DOE Patents [OSTI]

    Mariotti, Razvan (Boulder, CO)

    1991-01-01

    A high speed serial data transmission multiplexing circuit, which is operable to accurately transmit data over long distances (up to 3 Km), and to multiplex, select and continuously display real time analog signals in a bandwidth from DC to 100 Khz. The circuit is made fault tolerant by use of a programmable flywheel algorithm, which enables the circuit to tolerate one transmission error before losing synchronization of the transmitted frames of data. A method of encoding and framing captured and transmitted data is used which has a low overhead and prevents some particular transmitted data patterns from locking an included detector/decoder circuit.

  19. Large Distance Continuous Variables Communication with Concatenated Swaps

    E-Print Network [OSTI]

    Muhammad Asjad; Stefano Zippilli; Paolo Tombesi; David Vitali

    2015-04-01

    The radiation-pressure interaction between electromagnetic fields and mechanical resonators can be used to efficiently entangle two light fields which couple to a single mechanical mode. We analyze the performance of this process under realistic optomechanical conditions, and we determine the effectiveness of the resulting entanglement as a resource for quantum teleportation of continuous-variable light signals, over large distances, mediated by concatenated swap operations. We study the sensitiveness of the protocol to the quality factor of the mechanical systems, and its performance in non-ideal situations in which losses and reduced detection efficiencies are taken into account.

  20. Techniques for optically compressing light intensity ranges

    SciTech Connect (OSTI)

    Rushford, Michael C.

    1989-01-01

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter.

  1. Techniques for optically compressing light intensity ranges

    DOE Patents [OSTI]

    Rushford, M.C.

    1989-03-28

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

  2. Orientational order as the origin of the long-range hydrophobic effect

    E-Print Network [OSTI]

    Saikat Banerjee; Rakesh S. Singh; Biman Bagchi

    2015-04-06

    The long range attractive force between two hydrophobic surfaces immersed in water is observed to decrease exponentially with their separation -- this distance-dependence of effective force is known as the hydrophobic force law (HFL). We explore the microscopic origin of HFL by studying distance-dependent attraction between two parallel rods immersed in 2D Mercedes Benz model of water. This model is found to exhibit a well-defined HFL. Although the phenomenon is conventionally explained by density-dependent theories, we identify orientation, rather than density, as the relevant order parameter. The range of density variation is noticeably shorter than that of orientational heterogeneity. The latter is comparable to the observed distances of hydrophobic force. At large separation, attraction between the rods arises primarily from a destructive interference among the inwardly propagating oppositely oriented heterogeneity generated in water by the two rods. As the rods are brought closer, the interference increases leading to a decrease in heterogeneity and concomitant decrease in free energy of the system, giving rise to the effective attraction. We notice formation of hexagonal ice-like structures at the onset of attractive region which suggests that metastable free energy minimum may play a role in the origin of HFL.

  3. The effect of weak lensing on distance estimates from supernovae

    SciTech Connect (OSTI)

    Smith, Mathew; Maartens, Roy [Department of Physics, University of the Western Cape, Cape Town 7535 (South Africa); Bacon, David J.; Nichol, Robert C.; Campbell, Heather; D'Andrea, Chris B. [Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom); Clarkson, Chris [Astrophysics, Cosmology and Gravity Centre (ACGC), Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701 (South Africa); Bassett, Bruce A. [South African Astronomical Observatory, P.O. Box 9, Observatory 7935 (South Africa); Cinabro, David [Wayne State University, Department of Physics and Astronomy, Detroit, MI 48202 (United States); Finley, David A.; Frieman, Joshua A. [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Galbany, Lluis [CENTRA Centro Multidisciplinar de Astrofsica, Instituto Superior Tcnico, Av. Rovisco Pais 1, 1049-001 Lisbon (Portugal); Garnavich, Peter M. [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Olmstead, Matthew D. [Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States); Schneider, Donald P. [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States); Shapiro, Charles [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, La Canada Flintridge, CA 91109 (United States); Sollerman, Jesper, E-mail: matsmith2@gmail.com [The Oskar Klein Centre, Department of Astronomy, AlbaNova, SE-106 91 Stockholm (Sweden)

    2014-01-01

    Using a sample of 608 Type Ia supernovae from the SDSS-II and BOSS surveys, combined with a sample of foreground galaxies from SDSS-II, we estimate the weak lensing convergence for each supernova line of sight. We find that the correlation between this measurement and the Hubble residuals is consistent with the prediction from lensing (at a significance of 1.7?). Strong correlations are also found between the residuals and supernova nuisance parameters after a linear correction is applied. When these other correlations are taken into account, the lensing signal is detected at 1.4?. We show, for the first time, that distance estimates from supernovae can be improved when lensing is incorporated, by including a new parameter in the SALT2 methodology for determining distance moduli. The recovered value of the new parameter is consistent with the lensing prediction. Using cosmic microwave background data from WMAP7, H {sub 0} data from Hubble Space Telescope and Sloan Digital Sky Survey (SDSS) Baryon acoustic oscillations measurements, we find the best-fit value of the new lensing parameter and show that the central values and uncertainties on ? {sub m} and w are unaffected. The lensing of supernovae, while only seen at marginal significance in this low-redshift sample, will be of vital importance for the next generation of surveys, such as DES and LSST, which will be systematics-dominated.

  4. V838 Mon: light echo evolution and distance estimate

    E-Print Network [OSTI]

    Lisa A. Crause; Warrick A. Lawson; John W. Menzies; Fred Marang

    2005-01-22

    Following its 2002 February eruption, V838 Mon developed a light echo that continues to expand and evolve as light from the outburst scatters off progressively more distant circumstellar and/or interstellar material. Multi-filter images of the light echo, obtained with the South African Astronomical Observatory (SAAO) 1.0-m telescope between 2002 May and 2004 December, are analysed and made available electronically. The expansion of the light echo is measured from the images and the data compared with models for scattering by a thin sheet and a thin shell of dust. From these model results we infer that the dust is likely in the form of a thin sheet distant from the star, suggesting that the material is of interstellar origin, rather than being from earlier stages in the star's evolution. Although the fit is uncertain, we derive a stellar distance of ~ 9 kpc and a star-dust distance of ~ 5 pc, in good agreement with recent results reported from other methods. We also present JHKL and Cousins UBVRI photometry obtained at the SAAO during the star's second, third and fourth observing seasons post-outburst. These data show complex infrared colour behaviour while V838 Mon is slowly brightening in the optical.

  5. Laser Range Finder Mapping of Floating Vehicle

    E-Print Network [OSTI]

    Hui, Corinna

    2009-01-01

    Using laser range finders as a method of navigation is popular with mobile land robots; however, there has been little research using it with water vehicles. Therefore, this thesis explores the usage and data flow of a ...

  6. Long range transport of acid rain precursors

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01

    A model of the long range transport of primary and secondary pollutants derived by Fay and Rosenzweig (1) is applied to the problem of the transport of acid rain precursors. The model describes the long term average (annual ...

  7. Tracking Dynamic Boundary Fronts Using Range Sensors

    E-Print Network [OSTI]

    Ramamritham, Krithi

    , tracking forest fires and environmental phenomena. Consider a poisonous gas or plume monitoring ap De- tection and Ranging) are being used for detecting forest fires [6], [7] in the last few years

  8. Systematic ranging and late warning asteroid impacts

    E-Print Network [OSTI]

    Farnocchia, D; Micheli, M

    2015-01-01

    We describe systematic ranging, an orbit determination technique especially suitable to assess the near-term Earth impact hazard posed by newly discovered asteroids. For these late warning cases, the time interval covered by the observations is generally short, perhaps a few hours or even less, which leads to severe degeneracies in the orbit estimation process. The systematic ranging approach gets around these degeneracies by performing a raster scan in the poorly-constrained space of topocentric range and range rate, while the plane of sky position and motion are directly tied to the recorded observations. This scan allows us to identify regions corresponding to collision solutions, as well as potential impact times and locations. From the probability distribution of the observation errors, we obtain a probability distribution in the orbital space and then estimate the probability of an Earth impact. We show how this technique is effective for a number of examples, including 2008 TC3 and 2014 AA, the only tw...

  9. Long range interactions in nanoscale science

    E-Print Network [OSTI]

    Rajter, Richard F.

    Our understanding of the long range electrodynamic, electrostatic, and polar interactions that dominate the organization of small objects at separations beyond an interatomic bond length is reviewed. From this basic-forces ...

  10. Underwater vehicle localization using range measurements

    E-Print Network [OSTI]

    Papadopoulos, Ge?rgios

    2010-01-01

    This thesis investigates the problem of cooperative navigation of autonomous marine vehicles using range-only acoustic measurements. We consider the use of a single maneuvering autonomous surface vehicle (ASV) to aid the ...

  11. Active dendrites enhance neuronal dynamic range

    E-Print Network [OSTI]

    Leonardo L. Gollo; Osame Kinouchi; Mauro Copelli

    2009-08-08

    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.

  12. Choosing good distance metrics and local planners for probabilistic roadmap motion planning methods

    E-Print Network [OSTI]

    Bayazit, Osman Burchan

    1998-01-01

    This thesis presents a comparative evaluation of different distance metrics and local planners within the context of probabilistic roadmap methods for motion planning. Both C-space and Workspace distance metrics and local planners are considered...

  13. The Perception and Cognition of Environmental Distance: Direct Sources of Information"

    E-Print Network [OSTI]

    Montello, Daniel R.

    efficiently (time, money, food). Clearly, knowledge of distances in the environment "affects the decision reflect the human desire to minimize functional distance (Deutsch and Isard 1961; Golledge and Stimson

  14. Hybrid intensity and time-of-flight signal processing techniques for intelligent distance sensors

    E-Print Network [OSTI]

    Hiromi, Itariu

    2013-01-01

    With the advent of "smart" consumer electronics, distance sensing is an increasingly important field in optical sensing. A novel approach to active infrared(IR) 1D distance sensing is proposed, employing both intensity and ...

  15. Yet Another Secure Distance-Bounding Protocol Ventzislav Nikov and Marc Vauclair

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Yet Another Secure Distance-Bounding Protocol Ventzislav Nikov and Marc Vauclair NXP Semiconductors, Leuven, Belgium, ventzislav.nikov@nxp.com, marc.vauclair@nxp.com Abstract. Distance-bounding protocols

  16. A systematic determination of legends for destination and distance signs in Texas

    E-Print Network [OSTI]

    McClure, Wesley Glen

    1998-01-01

    Destination and Distance signs are guide signs which are commonly used along rural highways in Texas to display the names of the destinations to be found along a highway, the direction to travel, and the distance in miles ...

  17. Motion Segmentation of Truncated Signed Distance Function based Volumetric Samunda Perera, Nick Barnes, Xuming He

    E-Print Network [OSTI]

    Kohli, Pushmeet

    Motion Segmentation of Truncated Signed Distance Function based Volumetric Surfaces Samunda Perera. Introduction The Truncated Signed Distance Function (TSDF) based volumetric surface representation format [4 the problem of segmenting such a volumetric surface reconstruction of a scene into distinctively moving

  18. Programmable near-infrared ranging system

    DOE Patents [OSTI]

    Everett, Jr., Hobart R. (San Diego, CA)

    1989-01-01

    A high angular resolution ranging system particularly suitable for indoor plications involving mobile robot navigation and collision avoidance uses a programmable array of light emitters that can be sequentially incremented by a microprocessor. A plurality of adjustable level threshold detectors are used in an optical receiver for detecting the threshold level of the light echoes produced when light emitted from one or more of the emitters is reflected by a target or object in the scan path of the ranging system.

  19. Recap Dictionaries Wildcard queries Edit distance Spelling correction Soundex Introduction to Information Retrieval

    E-Print Network [OSTI]

    Nejdl, Wolfgang

    Dictionaries Wildcard queries Edit distance Spelling correction Soundex Skip pointers 16 28 72 5 51 98 2 4 8 16

  20. Type IIP supernovae as cosmological probes: A SEAM distance to SN 1999em

    E-Print Network [OSTI]

    Baron, E.; Nugent, Peter E.; Branch, David; Hauschildt, Peter H.

    2004-01-01

    Type IIP Supernovae as Cosmological Probes: A SEAM Distanceintrinsic brightness, supernovae make excellent cosmologicalstars: atmospheres supernovae: 1999em Distances from

  1. On Dimensionality of Coordinate-Based Network Distance Mapping Technical Report

    E-Print Network [OSTI]

    Minnesota, University of

    observe "non-Euclidean-ness" in the network distance. We find that this "non-Euclidean- ness" is caused

  2. Multiple regression on distance matrices: a multivariate spatial analysis tool Jeremy W. Lichstein

    E-Print Network [OSTI]

    Lichstein, Jeremy W.

    Multiple regression on distance matrices: a multivariate spatial analysis tool Jeremy W. Lichstein, Spatial autocorrelation Abstract I explore the use of multiple regression on distance matrices (MRM regression of a response matrix on any number of explanatory matrices, where each matrix contains distances

  3. The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Distance Fields -Fast

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Distance Fields - Fast Computation Using UNIVERSITY of NORTH CAROLINA at CHAPEL HILL Distance Fields Distance Function For a site a scalar function f UNIVERSITY of NORTH CAROLINA at CHAPEL HILL What is a Voronoi Diagram? Given a collection of geometric

  4. Viral genome phylogeny based on LempelZiv complexity and Hausdorff distance

    E-Print Network [OSTI]

    Yu, Chenglong

    Viral genome phylogeny based on Lempel­Ziv complexity and Hausdorff distance Chenglong Yu a , Rong between two sequences. Use Hausdorff distance (HD) to analyze multi-segmented viral genomes. Use a modified Hausdorff distance (MHD) to analyze multi-segmented viral genomes. Take the multi

  5. Efficient Algorithms for Computing the Triplet and Quartet Distance Between Trees of Arbitrary Degree

    E-Print Network [OSTI]

    Schierup, Mikkel Heide

    Efficient Algorithms for Computing the Triplet and Quartet Distance Between Trees of Arbitrary- ficient algorithms for computing these distances. We show how to compute the triplet distance in time O against unresolved (non-binary) topologies. The previous best algorithm for computing the triplet

  6. Modeling Distance Decay for the Geographic Profiling Mike O'Leary

    E-Print Network [OSTI]

    O'Leary, Michael

    Modeling Distance Decay for the Geographic Profiling Problem Mike O'Leary Towson University Geospatial TWG Portland, OR April 15, 2010 Mike O'Leary (Towson University) Modeling distance decay 2010 commenting on a preliminary version of this presentation Mike O'Leary (Towson University) Modeling distance

  7. CS 5050 -Program #5 -30 points Edit Distance as Shortest Path Problem

    E-Print Network [OSTI]

    Allan, Vicki H.

    CS 5050 - Program #5 - 30 points Edit Distance as Shortest Path Problem Part 1 Edit Distance (15 be helpful: Write the edit distance program using a shortest path solution. To save you a little time points) Problems in molecular biology involve finding the minimum number of edit steps which are required

  8. A Test of the Calibration of the Tully-Fisher Relation Using Cepheid and SNIa Distances

    E-Print Network [OSTI]

    T. Shanks

    1997-02-18

    We make a direct test of Tully-Fisher distance estimates to eleven spiral galaxies with HST Cepheid distances and to twelve spiral galaxies with SNIa distances. The HST Cepheid distances come from the work of Freedman (1997), Sandage et al (1996) and Tanvir et al (1995). The SNIa distances come from Pierce (1994), calibrated using the Cepheid results of Sandage et al (1996). The Tully-Fisher distances mostly come from the work of Pierce (1994). The results show that the Tully-Fisher distance moduli are too short with respect to the Cepheid distances by 0.46+-0.14mag and too short with respect to the SNIa distances by 0.46+-0.19mag. Combining the HST Cepheid and SNIa data suggests that, overall, previous Tully-Fisher distances were too short by 0.46+-0.11mag, a result which is significant at the 4sigma level. These data therefore indicate that previous Tully-Fisher distances should be revised upwards by 24+-6% implying, for example, a Virgo distance of 19.3+-1.9Mpc. The value of Ho from Tully-Fisher estimates is correspondingly revised downwards from Ho=84+-10 to Ho=68+-8.

  9. Place Last Name First Name Gender Age Category Swim Yards Swim Distance Bike Distance Run Distance Overall Distance 1 Dykstra Andy M 18-24 1775.0 yards 1.009 miles 15.600 miles 3.790 miles 20.399 miles

    E-Print Network [OSTI]

    Thomas, David D.

    Place Last Name First Name Gender Age Category Swim Yards Swim Distance Bike Distance Run Distance.597 miles 12.300 miles 2.230 miles 15.127 miles 20 Strom Thad M 30-39 1150.0 yards 0.653 miles 12.000 miles

  10. How PseudoBoolean Programming can help Genome Rearrangement Distance Computation

    E-Print Network [OSTI]

    Fertin, Guillaume

    How Pseudo­Boolean Programming can help Genome Rearrangement Distance Computation S vialette@lri.fr Abstract. Computing genomic distances between whole genomes is a fundamental problem in comparative genomics. Recent researches have resulted in di#erent genomic distance definitions: number

  11. Clustering of local group distances: publication bias or correlated measurements? I. The large Magellanic cloud

    SciTech Connect (OSTI)

    De Grijs, Richard [Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871 (China); Wicker, James E. [National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China); Bono, Giuseppe [Dipartimento di Fisica, Universit di Roma Tor Vergata, via Della Ricerca Scientifica 1, I-00133 Roma (Italy)

    2014-05-01

    The distance to the Large Magellanic Cloud (LMC) represents a key local rung of the extragalactic distance ladder yet the galaxy's distance modulus has long been an issue of contention, in particular in view of claims that most newly determined distance moduli cluster tightlyand with a small spreadaround the 'canonical' distance modulus, (m M){sub 0} = 18.50 mag. We compiled 233 separate LMC distance determinations published between 1990 and 2013. Our analysis of the individual distance moduli, as well as of their two-year means and standard deviations resulting from this largest data set of LMC distance moduli available to date, focuses specifically on Cepheid and RR Lyrae variable-star tracer populations, as well as on distance estimates based on features in the observational Hertzsprung-Russell diagram. We conclude that strong publication bias is unlikely to have been the main driver of the majority of published LMC distance moduli. However, for a given distance tracer, the body of publications leading to the tightly clustered distances is based on highly non-independent tracer samples and analysis methods, hence leading to significant correlations among the LMC distances reported in subsequent articles. Based on a careful, weighted combination, in a statistical sense, of the main stellar population tracers, we recommend that a slightly adjusted canonical distance modulus of (m M){sub 0} = 18.49 0.09 mag be used for all practical purposes that require a general distance scale without the need for accuracies of better than a few percent.

  12. Linking a distance measure of entanglement to its convex roof

    E-Print Network [OSTI]

    Alexander Streltsov; Hermann Kampermann; Dagmar Bru

    2010-12-07

    An important problem in quantum information theory is the quantification of entanglement in multipartite mixed quantum states. In this work, a connection between the geometric measure of entanglement and a distance measure of entanglement is established. We present a new expression for the geometric measure of entanglement in terms of the maximal fidelity with a separable state. A direct application of this result provides a closed expression for the Bures measure of entanglement of two qubits. We also prove that the number of elements in an optimal decomposition w.r.t. the geometric measure of entanglement is bounded from above by the Caratheodory bound, and we find necessary conditions for the structure of an optimal decomposition.

  13. Linking a distance measure of entanglement to its convex roof

    E-Print Network [OSTI]

    Streltsov, Alexander; Bru, Dagmar

    2010-01-01

    An important problem in quantum information theory is the quantification of entanglement in multipartite mixed quantum states. In this work a connection between the geometric measure of entanglement and a distance measure of entanglement is established. We present a new expression for the geometric measure of entanglement in terms of the maximal fidelity with a separable state. A direct application of this result provides a closed expression for the Bures measure of entanglement of two qubits. We also prove that the number of elements in an optimal decomposition with respect to the geometric measure of entanglement is bounded from above by the Caratheodory bound, and we find necessary conditions for the structure of an optimal decomposition.

  14. Consistency among distance measurements: transparency, BAO scale and accelerated expansion

    E-Print Network [OSTI]

    A. Avgoustidis; Licia Verde; Raul Jimenez

    2009-06-11

    We explore consistency among different distance measures, including Supernovae Type Ia data, measurements of the Hubble parameter, and determination of the Baryon acoustic oscillation scale. We present new constraints on the cosmic transparency combining $H(z)$ data together with the latest Supernova Type Ia data compilation. This combination, in the context of a flat $\\Lambda$CDM model, improves current constraints by nearly an order of magnitude. We re-examine the recently reported tension between the Baryon acoustic oscillation scale and Supernovae data in light of possible deviations from transparency, concluding that the source of the discrepancy may most likely be found among systematic effects of the modelling of the low redshift data or a simple $\\sim 2-\\sigma$ statistical fluke, rather than in exotic physics. Finally, we attempt to draw model-independent conclusions about the recent accelerated expansion, determining the acceleration redshift to be $z_{acc}=0.35^{+0.20}_{-0.13}$ (1-$\\sigma$).

  15. Ultrafast Long-Distance Quantum Communication with Static Linear Optics

    E-Print Network [OSTI]

    Fabian Ewert; Marcel Bergmann; Peter van Loock

    2015-03-23

    We propose a projection measurement onto encoded Bell states with a static network of linear optical elements. By increasing the size of the quantum error correction code, both Bell measurement efficiency and photon-loss tolerance can be made arbitrarily high at the same time. As a main application, we show that all-optical quantum communication over large distances with communication rates similar to those of classical communication is possible solely based on local state teleportations using optical sources of encoded Bell states, fixed arrays of beam splitters, and photon detectors discriminating up to two photons. As another application, generalizing state teleportation to gate teleportation for quantum computation, we find that in order to achieve universality the intrinsic loss tolerance must be sacrificed and a minimal amount of feedforward has to be added.

  16. Distance measurements as a probe of cosmic acceleration

    E-Print Network [OSTI]

    Neil Trentham

    2001-05-23

    A major recent evelopment in observational cosmology has been an accurate measurement of the luminosity distance-redshift relation out to redshifts z=0.8 from Type Ia supernova standard candles. The results have been argued as evidence for cosmic acceleration. It is well known that this assertion depends on the assumption that we know the equation of state for all mass-energy other than normal pressureless matter; popular models are based on either the cosmological constant or on the more general quintessence formulation. But this assertion also depends on a number of other assumptions, implicit in the derivation of the standard cosmological field equations: large-scale isotropy and homogeneity, the flatness of the Universe, and the validity of general relativity on cosmological scales (where it has not been tested). A detailed examination of the effects of these assumptions on the interplay between the luminosity distance-redshift relation and the acceleration of the Universe is not possible unless one can define the precise nature of the failure of any particular assumption. However a simple quantitative investigation is possible and reveals a number of considerations about the relative importance of the different assumptions. In this paper we present such an investigation. We find that the relationship between the distant-redshift relation and the sign of the deceleration parameter is fairly robust and is unaffected if only one of the assumptions that we investigate is invalid so long as the deceleration parameter is not close to zero (it would not be close to zero in the currently-favored Omega_Lambda = 1 - Omega_matter = 0.7 or 0.8 Universe, for example). Failures of two or more assumptions in concordance may have stronger effects.

  17. Supersymmetric inversion of effective-range expansions

    E-Print Network [OSTI]

    Bikashkali Midya; Jrmie Evrard; Sylvain Abramowicz; O. L. Ramrez Surez; Jean-Marc Sparenberg

    2015-05-26

    A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

  18. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Gong, Zhe-Xuan; Hu, Anzi; Wall, Michael L; Foss-Feig, Michael; Gorshkov, Alexey V

    2015-01-01

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  19. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Zhe-Xuan Gong; Mohammad F. Maghrebi; Anzi Hu; Michael L. Wall; Michael Foss-Feig; Alexey V. Gorshkov

    2015-05-12

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  20. Extended range radiation dose-rate monitor

    DOE Patents [OSTI]

    Valentine, Kenneth H. (Knoxville, TN)

    1988-01-01

    An extended range dose-rate monitor is provided which utilizes the pulse pileup phenomenon that occurs in conventional counting systems to alter the dynamic response of the system to extend the dose-rate counting range. The current pulses from a solid-state detector generated by radiation events are amplified and shaped prior to applying the pulses to the input of a comparator. The comparator generates one logic pulse for each input pulse which exceeds the comparator reference threshold. These pulses are integrated and applied to a meter calibrated to indicate the measured dose-rate in response to the integrator output. A portion of the output signal from the integrator is fed back to vary the comparator reference threshold in proportion to the output count rate to extend the sensitive dynamic detection range by delaying the asymptotic approach of the integrator output toward full scale as measured by the meter.

  1. Safety assessment of outdoor live fire range

    SciTech Connect (OSTI)

    1989-05-01

    The following Safety Assessment (SA) pertains to the outdoor live fire range facility (LFR). The purpose of this facility is to supplement the indoor LFR. In particular it provides capacity for exercises that would be inappropriate on the indoor range. This SA examines the risks that are attendant to the training on the outdoor LFR. The outdoor LFR used by EG&G Mound is privately owned. It is identified as the Miami Valley Shooting Grounds. Mondays are leased for the exclusive use of EG&G Mound.

  2. Impulse radar with swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-09-08

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. The antennas can be arranged in a side-by-side parallel spaced apart configuration or in a coplanar opposed configuration which significantly reduces main bang coupling. 25 figs.

  3. 6, 1018310216, 2006 Long-range transport

    E-Print Network [OSTI]

    Boyer, Edmond

    ACPD 6, 1018310216, 2006 Long-range transport of Asian dust and air pollutants to Taiwan C.-Y. Lin and air pollutants to Taiwan: observed evidence and model simulation C.-Y. Lin 1 , Z. Wang 2 , W.-N. Chen and air pollutants to Taiwan C.-Y. Lin et al. Title Page Abstract Introduction Conclusions References

  4. Discussion of long-range weather prediction

    SciTech Connect (OSTI)

    Canavan, G.H.

    1998-09-10

    A group of scientists at Los Alamos have held a series of discussions of the issues in and prospects for improvements in Long-range Weather Predictions Enabled by Proving of the Atmosphere at High Space-Time Resolution. The group contained the requisite skills for a full evaluation, although this report presents only an informal discussion of the main technical issues. The group discussed all aspects of the proposal, which are grouped below into the headings: (1) predictability; (2) sensors and satellites, (3) DIAL and atmospheric sensing; (4) localized transponders; and (5) summary and integration. Briefly, the group agreed that the relative paucity of observations of the state of the atmosphere severely inhibits the accuracy of weather forecasts, and any program that leads to a more dense and uniform observational network is welcome. As shown in Long-range Weather more dense and uniform observational network is welcome. As shown in Long-range Weather Predictions, the pay-back of accurate long-range forecasts should more than justify the expenditure associated with improved observations and forecast models required. The essential step is to show that the needed technologies are available for field test and space qualification.

  5. A Test of Tully-Fisher Distance Estimates Using Cepheids and Type Ia Supernovae

    E-Print Network [OSTI]

    T. Shanks

    1999-01-24

    We update and extend the results of Shanks (1997, MNRAS, 290, L77) by making a direct test of Tully-Fisher distance estimates to thirteen spiral galaxies with HST Cepheid distances and to ten spiral galaxies with Type Ia supernova (SNIa) distances. The results show that the Tully-Fisher distance moduli are too short with respect to the Cepheid distances by 0.46+-0.11mag and too short with respect to the SNIa distances by 0.49+-0.18mag. Combining the HST Cepheid and the best SNIa data suggests that, overall, previous Tully-Fisher distances at v~1000 kms-1 were too short by 0.43+-0.09mag, a result which is significant at the 4.6 sigma level. These data therefore indicate that previous Tully-Fisher distances should be revised upwards by 22+-5% implying, for example, a Virgo distance of 19.0+-1.8Mpc. The value of Ho from Tully-Fisher estimates is correspondingly revised downwards from Ho=84+-10kms-1Mpc-1 to Ho=69+-8kms-1Mpc-1. There is evidence that the Tully-Fisher relation at large distances is affected by Malmquist bias. In this case, we argue that Ho<50kms-1Mpc-1 cannot be ruled out by Tully-Fisher considerations.

  6. Rangely, Colorado: Energy Resources | Open Energy Information

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/WaterEnergy Marketing CorpMember Corp JumpRangely, Colorado:

  7. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    Howes, G G

    2007-01-01

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the ther...

  8. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    G. G. Howes

    2007-11-27

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the thermalization of fusion energy in burning plasmas.

  9. Instantaneous Action at a Distance in a Holistic Universe

    E-Print Network [OSTI]

    B. G. Sidharth

    1998-12-01

    The early work of Lorentz, Abraham and others, evolved through the work of Fokker, Dirac and others to ultimately culminate in the Feynman- Wheeler direct action at a distance theory. However this theory has encountered certain conceptual difficulties like non-locality in time, self force of the electron, pre acceleration and the perfect absorption condition of Feynman and Wheeler, that is the instantaneous action of the remaining charges in the universe on the charge in question. More recently, Hoyle and Narlikar have resurrected this theory, but within the context of a Steady State or Quasi Steady State cosmology. They argue that the theory infact has a better standing than the generally accepted quantum theoretic description. In this article we consider a quantum theoretic description and a cosmology which parallels the Hoyle-Narlikar approach. This leads to a synthesis and justification of the Dirac and Feynman-Wheeler approaches, clarifying the conceptual problems in the process. We deduce a scenario with quantized space-time and a holistic cosmology, consistent with physical and astrophysical data. The non-locality is now seen to be meaningful within the minimum space-time intervals, as also the perfect absorption within the holistic description. Local realism, and the usual causal field theory are seen to have an underpinning of direct action. For example this is brought out by the virtual photons which mediate interactions in Quantum Electro Dynamics, and the emergence of the inverse square law in the above approach from a background Zero Point Field.

  10. Southern Asia future plans feature long-distance lines

    SciTech Connect (OSTI)

    Not Available

    1991-11-01

    This paper reports that although pipe line mileage working, planned and under study has dipped slightly from 47,346 km (29,420 mi) to 44,853 km (27,871 mi), Southern Asia continues to hold a strong position for future projects with some of the most interesting programs in the international market. Two dramatic, long-distance natural gas transmission, gathering and lateral networks continue to hold the future pipe line construction spotlight in Southern Asia. The Association of South East Asian Nations (ASEAN) continues to study a 7,830 km (4,865 mi) gas transmission system. With an estimated cost of $10 billion, the system includes some 6,276 km (3,900 mi) of transmission lines, with 1,094 km (680 mi) offshore. Group members include Brunei, Indonesia, Malaysia, the Philippines, Singapore and Thailand. The second project, the Trans-Asian Pipeline System, involves 3,380 km (2,100 mi) of transmission lines from the Iran's Bandar Abbas gas field across Pakistan to a terminal at Calcutta, India.

  11. Population genetic analysis of a recent range expansion: mechanisms regulating the poleward range limit

    E-Print Network [OSTI]

    Grosberg, Rick

    with the range limit. We infer that the primary cause of the northern range boundary in T. rubescens is migration mechanisms--genetic impoverishment, migration load, or a physical barrier to dis- persal--are well described similarly affect all taxa in a region whose distributional limits are established by migration load

  12. Multichannel long-range Rydberg molecules

    E-Print Network [OSTI]

    Eiles, Matthew T

    2015-01-01

    A generalized class of ultra-long-range Rydberg molecules is proposed which consist of a multichannel Rydberg atom whose outermost electron creates a chemical bond with a distant ground state atom. Such multichannel Rydberg molecules exhibit favorable properties for laser excitation, because states exist where the quantum defect varies strongly with the principal quantum number. The resulting occurrence of near degeneracies with states of high orbital angular momentum promotes the admixture of low $l$ into the high $l$ deeply bound `trilobite' molecule states, thereby circumventing the usual difficulty posed by electric dipole selection rules. Such states also can exhibit multi-scale binding possibilities that could present novel options for quantum manipulation.

  13. Tonopah Test Range 2030 Meeting Summary Report

    SciTech Connect (OSTI)

    NSTec Environmental Restoration

    2009-04-01

    Corrective Action Sites (CASs) and Corrective Action Units (CAUs) at the Tonopah Test Range (TTR) may be placed into three categories: Closed, Closed in Place, or Closure in Progress. CASs and CAUs where contaminants were either not detected or were cleaned up to within regulatory action levels are summarized. CASs and CAUs where contaminants and/or waste have been closed in place are summarized. There is also a table that summarizes the contaminant that has been closed at each site, if land-use restrictions are present, and if post-closure inspections are required.

  14. Fan-less long range alpha detector

    DOE Patents [OSTI]

    MacArthur, D.W.; Bounds, J.A.

    1994-05-10

    A fan-less long range alpha detector is disclosed which operates by using an electrical field between a signal plane and the surface or substance to be monitored for air ions created by collisions with alpha radiation. Without a fan, the detector can operate without the possibility of spreading dust and potential contamination into the atmosphere. A guard plane between the signal plane and the electrically conductive enclosure and maintained at the same voltage as the signal plane, reduces leakage currents. The detector can easily monitor soil, or other solid or liquid surfaces. 2 figures.

  15. Rangely Oilfield Geothermal Area | Open Energy Information

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLCALLETEREFU Elektronik GmbHRahusRamkyRange Fuels

  16. Help:Range blocks | Open Energy Information

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA JumpDuimen River PowerHeckert BXT SolarHelioNova S LLinkedRange

  17. Range Fuels Biorefinery Groundbreaking | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuildingBudget ||Department ofRequest7of 9 RadiologicalRainRancherRange

  18. Engines of culture : learning from the unique public realm of the long distance train

    E-Print Network [OSTI]

    Sherman, Danya

    2015-01-01

    The Long Distance American Train is a unique, meaningful, and somewhat mysterious site. These ephemeral, mobile societies exhibit remarkable qualities, including intensive interactions with strangers, conviviality amongst ...

  19. Anomalous expansion of the copper-apical-oxygen distance in supercondu...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Anomalous expansion of the copper-apical-oxygen distance in superconducting cuprate bilayers Citation Details In-Document Search Title: Anomalous expansion of the...

  20. Long distance symmetries for nuclear forces and the similarity renormalization group

    SciTech Connect (OSTI)

    Szpigel, S.; Timoteo, V. S.; Arriola, E. R.

    2013-03-25

    In this work we study the emergence of long distance symmetries for nuclear forces within the framework of the similarity renormalization group approach.

  1. Single-photon frequency upconversion for long-distance quantum teleportation and communication

    E-Print Network [OSTI]

    Albot?, Marius A., 1974-

    2006-01-01

    Entanglement generation, single-photon detection, and frequency translation that preserves the polarization quantum state of the photons are essential technologies for long distance quantum communication protocols. This ...

  2. Method for enhancing the resolving power of ion mobility separations over a limited mobility range

    DOE Patents [OSTI]

    Shvartsburg, Alexandre A; Tang, Keqi; Smith, Richard D

    2014-09-23

    A method for raising the resolving power, specificity, and peak capacity of conventional ion mobility spectrometry is disclosed. Ions are separated in a dynamic electric field comprising an oscillatory field wave and opposing static field, or at least two counter propagating waves with different parameters (amplitude, profile, frequency, or speed). As the functional dependencies of mean drift velocity on the ion mobility in a wave and static field or in unequal waves differ, only single species is equilibrated while others drift in either direction and are mobility-separated. An ion mobility spectrum over a limited range is then acquired by measuring ion drift times through a fixed distance inside the gas-filled enclosure. The resolving power in the vicinity of equilibrium mobility substantially exceeds that for known traveling-wave or drift-tube IMS separations, with spectra over wider ranges obtainable by stitching multiple segments. The approach also enables low-cutoff, high-cutoff, and bandpass ion mobility filters.

  3. Analytical results for coupled map lattices with long-range interactions

    E-Print Network [OSTI]

    C. Anteneodo; S. E. de S. Pinto; A. M. Batista; R. L. Viana

    2004-01-22

    We obtain exact analytical results for lattices of maps with couplings that decay with distance as $r^{-\\alpha}$. We analyze the effect of the coupling range on the system dynamics through the Lyapunov spectrum. For lattices whose elements are piecewise linear maps, we get an algebraic expression for the Lyapunov spectrum. When the local dynamics is given by a nonlinear map, the Lyapunov spectrum for a completely synchronized state is analytically obtained. The critical lines characterizing the synchronization transition are determined from the expression for the largest transversal Lyapunov exponent. In particular, it is shown that in the thermodynamical limit, such transition is only possible for sufficiently long-range interactions, namely, for $\\alpha\\le alpha_c

  4. Studying short-range correlations and momentum distributions with unitarily transformed operators

    E-Print Network [OSTI]

    Thomas Neff; Hans Feldmeier; Wataru Horiuchi; Dennis Weber

    2015-03-20

    Short-range correlations in 4He are investigated using many-body wave functions obtained in the no-core shell model. The similarity renormalization group (SRG) is used to evolve the Argonne V8' interaction and the density operators. The effects of short-range correlations are reflected in the two-body densities in coordinate space as a function of the distance between two nucleons, or alternatively in in momentum space as function of the relative momentum between two nucleons. The SRG transformation is performed in two-body approximation. The importance of missing three-body and higher-body contributions is investigated by comparing results obtained for different flow parameters and by comparing to exact results with the bare Argonne V8' interaction obtained in the correlated Gaussian approach.

  5. Autonomous Vehicles Have a Wide Range of Possible Energy Impacts (Poster)

    SciTech Connect (OSTI)

    Brown, A.; Repac, B.; Gonder, J.

    2013-07-01

    This poster presents initial estimates of the net energy impacts of automated vehicles (AVs). Automated vehicle technologies are increasingly recognized as having potential to decrease carbon dioxide emissions and petroleum consumption through mechanisms such as improved efficiency, better routing, lower traffic congestion, and by enabling advanced technologies. However, some effects of AVs could conceivably increase fuel consumption through possible effects such as longer distances traveled, increased use of transportation by underserved groups, and increased travel speeds. The net effect on petroleum use and climate change is still uncertain. To make an aggregate system estimate, we first collect best estimates for the energy impacts of approximately ten effects of AVs. We then use a modified Kaya Identity approach to estimate the range of aggregate effects and avoid double counting. We find that depending on numerous factors, there is a wide range of potential energy impacts. Adoption of automated personal or shared vehicles can lead to significant fuel savings but has potential for backfire.

  6. Socially Optimal Electric Driving Range of Plug-in Hybrid Electric Vehicles

    SciTech Connect (OSTI)

    Kontou, Eleftheria [ORNL; Yin, Yafeng [University of Florida; Lin, Zhenhong [ORNL

    2015-01-01

    This study determines the optimal electric driving range of plug-in hybrid electric vehicles (PHEVs) that minimizes the daily cost borne by the society when using this technology. An optimization framework is developed and applied to datasets representing the US market. Results indicate that the optimal range is 16 miles with an average social cost of $3.19 per day when exclusively charging at home, compared to $3.27 per day of driving a conventional vehicle. The optimal range is found to be sensitive to the cost of battery packs and the price of gasoline. When workplace charging is available, the optimal electric driving range surprisingly increases from 16 to 22 miles, as larger batteries would allow drivers to better take advantage of the charging opportunities to achieve longer electrified travel distances, yielding social cost savings. If workplace charging is available, the optimal density is to deploy a workplace charger for every 3.66 vehicles. Moreover, the diversification of the battery size, i.e., introducing a pair and triple of electric driving ranges to the market, could further decrease the average societal cost per PHEV by 7.45% and 11.5% respectively.

  7. Socially optimal electric driving range of plug-in hybrid electric vehicles

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kontou, Eleftheria; Yin, Yafeng; Lin, Zhenhong

    2015-07-25

    This study determines the optimal electric driving range of plug-in hybrid electric vehicles (PHEVs) that minimizes the daily cost borne by the society when using this technology. An optimization framework is developed and applied to datasets representing the US market. Results indicate that the optimal range is 16 miles with an average social cost of 3.19 per day when exclusively charging at home, compared to 3.27 per day of driving a conventional vehicle. The optimal range is found to be sensitive to the cost of battery packs and the price of gasoline. When workplace charging is available, the optimal electricmoredriving range surprisingly increases from 16 to 22 miles, as larger batteries would allow drivers to better take advantage of the charging opportunities to achieve longer electrified travel distances, yielding social cost savings. If workplace charging is available, the optimal density is to deploy a workplace charger for every 3.66 vehicles. Moreover, the diversification of the battery size, i.e., introducing a pair and triple of electric driving ranges to the market, could further decrease the average societal cost per PHEV by 7.45% and 11.5% respectively.less

  8. ON A LONG RANGE SEGREGATION MODEL 1. Introduction ...

    E-Print Network [OSTI]

    2014-12-08

    Heuristically, this will force the populations to stay at distance 1, one from each other as ? ..... there exists a universal constant C0 > 0 such that in B? mr. 4.

  9. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. 14 figs.

  10. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control.

  11. Reconciliation of the Surface Brightness Fluctuations and Type Ia Supernovae Distance Scales

    E-Print Network [OSTI]

    Edward A. Ajhar; John L. Tonry; John P. Blakeslee; Adam G. Riess; Brian P. Schmidt

    2001-05-21

    We present Hubble Space Telescope measurements of surface brightness fluctuations (SBF) distances to early-type galaxies that have hosted Type Ia supernovae (SNIa). The agreement in the relative SBF and SNIa multicolor light curve shape and delta-m_15 distances is excellent. There is no systematic scale error with distance, and previous work has shown that SBF and SNIa give consistent ties to the Hubble flow. However, we confirm a systematic offset of about 0.25 mag in the distance zero points of the two methods, and we trace this offset to their respective Cepheid calibrations. SBF has in the past been calibrated with Cepheid distances from the H_0 Key Project team, while SNIa have been calibrated with Cepheid distances from the team composed of Sandage, Saha, and collaborators. When the two methods are calibrated in a consistent way, their distances are in superb agreement. Until the conflict over the ``long'' and ``short'' extragalactic Cepheid distances among many galaxies is resolved, we cannot definitively constrain the Hubble constant to better than about 10%, even leaving aside the additional uncertainty in the distance to the Large Magellanic Cloud, common to both Cepheid scales. However, recent theoretical SBF predictions from stellar population models favor the Key Project Cepheid scale, while the theoretical SNIa calibration lies between the long and short scales. In addition, while the current SBF distance to M31/M32 is in good agreement with the RR Lyrae and red giant branch distances, calibrating SBF with the longer Cepheid scale would introduce a 0.3 mag offset with respect to the RR Lyrae scale.

  12. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2008-09-02

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  13. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2009-02-24

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  14. Ultrasonic ranging and data telemetry system

    DOE Patents [OSTI]

    Brashear, Hugh R. (Farragut, TN); Blair, Michael S. (Knoxville, TN); Phelps, James E. (Knoxville, TN); Bauer, Martin L. (Oak Ridge, TN); Nowlin, Charles H. (Oak Ridge, TN)

    1990-01-01

    An ultrasonic ranging and data telemetry system determines a surveyor's position and automatically links it with other simultaneously taken survey data. An ultrasonic and radio frequency (rf) transmitter are carried by the surveyor in a backpack. The surveyor's position is determined by calculations that use the measured transmission times of an airborne ultrasonic pulse transmitted from the backpack to two or more prepositioned ultrasonic transceivers. Once a second, rf communications are used both to synchronize the ultrasonic pulse transmission-time measurements and to transmit other simultaneously taken survey data. The rf communications are interpreted by a portable receiver and microcomputer which are brought to the property site. A video display attached to the computer provides real-time visual monitoring of the survey progress and site coverage.

  15. Ultra High Mass Range Mass Spectrometer System

    DOE Patents [OSTI]

    Reilly, Peter T. A. [Knoxville, TN

    2005-12-06

    Applicant's present invention comprises mass spectrometer systems that operate in a mass range from 1 to 10.sup.16 DA. The mass spectrometer system comprising an inlet system comprising an aerodynamic lens system, a reverse jet being a gas flux generated in an annulus moving in a reverse direction and a multipole ion guide; a digital ion trap; and a thermal vaporization/ionization detector system. Applicant's present invention further comprises a quadrupole mass spectrometer system comprising an inlet system having a quadrupole mass filter and a thermal vaporization/ionization detector system. Applicant's present invention further comprises an inlet system for use with a mass spectrometer system, a method for slowing energetic particles using an inlet system. Applicant's present invention also comprises a detector device and a method for detecting high mass charged particles.

  16. Range corrections in Proton Halo Nuclei

    E-Print Network [OSTI]

    Ryberg, Emil; Hammer, H -W; Platter, Lucas

    2015-01-01

    We analyze the effects of finite-range corrections in halo effective field theory for S-wave proton halo nuclei. We calculate the charge radius to next-to-leading order and the astrophysical S-factor for low-energy proton capture to fifth order in the low-energy expansion. As an application, we confront our results with experimental data for the S-factor for proton capture on Oxygen-16 into the excited $1/2^+$ state of Fluorine-17. Our low-energy theory is characterized by a systematic low-energy expansion, which can be used to quantify an energy-dependent model error to be utilized in data fitting. Finally, we show that the existence of proton halos is suppressed by the need for two fine tunings in the underlying theory.

  17. Fe-based long range ordered alloys

    DOE Patents [OSTI]

    Liu, Chain T (Oak Ridge, TN); Inouye, Henry (Oak Ridge, TN); Schaffhauser, Anthony C. (Oak Ridge, TN)

    1980-01-01

    Malleable long range ordered alloys having high critical ordering temperatures exist in the V(Co,Fe).sub.3 and V(Co,Fe,Ni).sub.3 system having the composition comprising by weight 22-23% V, 35-50% Fe, 0-22% Co and 19-40% Ni with an electron density no greater than 8.00. Excellent high temperature properties occur in alloys having compositions comprising by weight 22-23% V, 35-45% Fe, 0-10% Co, 25-35% Ni; 22-23% V, 28-33% Ni and the remainder Fe; and 22-23% V, 19-22% Ni, 19-22% Co and the remainder Fe. The alloys are fabricable by casting, deforming and annealing for sufficient time to provide ordered structure.

  18. Effect of enhanced Renilla luciferase and fluorescent protein variants on the Foerster distance of Bioluminescence resonance energy transfer (BRET)

    SciTech Connect (OSTI)

    Dacres, Helen, E-mail: helen.dacres@csiro.au [CSIRO Food Futures Flagship and Ecosystem Sciences, Canberra (Australia)] [CSIRO Food Futures Flagship and Ecosystem Sciences, Canberra (Australia); Michie, Michelle; Wang, Jian [CSIRO Food Futures Flagship and Ecosystem Sciences, Canberra (Australia)] [CSIRO Food Futures Flagship and Ecosystem Sciences, Canberra (Australia); Pfleger, Kevin D.G. [Laboratory for Molecular Endocrinology-GPCRs, Western Australian Institute for Medical Research (WAIMR) and Centre for Medical Research, The University of Western Australia, Perth (Australia)] [Laboratory for Molecular Endocrinology-GPCRs, Western Australian Institute for Medical Research (WAIMR) and Centre for Medical Research, The University of Western Australia, Perth (Australia); Trowell, Stephen C. [CSIRO Food Futures Flagship and Ecosystem Sciences, Canberra (Australia)] [CSIRO Food Futures Flagship and Ecosystem Sciences, Canberra (Australia)

    2012-08-31

    Highlights: Black-Right-Pointing-Pointer First experimental determination of Foerster distance (R{sub 0}) for enhanced BRET systems. Black-Right-Pointing-Pointer Effect of brighter BRET components RLuc2, RLuc8 and Venus was assessed. Black-Right-Pointing-Pointer Using brighter BRET components substantially increased (25%) R{sub 0} of the BRET{sup 1} system. Black-Right-Pointing-Pointer Using brighter BRET components marginally increased (2-9%) R{sub 0} of the BRET{sup 2} system. Black-Right-Pointing-Pointer Brighter BRET components improve the different weaknesses of BRET{sup 1} and BRET{sup 2} systems. -- Abstract: Bioluminescence resonance energy transfer (BRET) is an important tool for monitoring macromolecular interactions and is useful as a transduction technique for biosensor development. Foerster distance (R{sub 0}), the intermolecular separation characterized by 50% of the maximum possible energy transfer, is a critical BRET parameter. R{sub 0} provides a means of linking measured changes in BRET ratio to a physical dimension scale and allows estimation of the range of distances that can be measured by any donor-acceptor pair. The sensitivity of BRET assays has recently been improved by introduction of new BRET components, RLuc2, RLuc8 and Venus with improved quantum yields, stability and brightness. We determined R{sub 0} for BRET{sup 1} systems incorporating novel RLuc variants RLuc2 or RLuc8, in combination with Venus, as 5.68 or 5.55 nm respectively. These values were approximately 25% higher than the R{sub 0} of the original BRET{sup 1} system. R{sub 0} for BRET{sup 2} systems combining green fluorescent proteins (GFP{sup 2}) with RLuc2 or RLuc8 variants was 7.67 or 8.15 nm, i.e. only 2-9% greater than the original BRET{sup 2} system despite being {approx}30-fold brighter.

  19. Virtual Classroom Extension for Effective Distance Education Radu Dondera, Chun Jia, Voicu Popescu,

    E-Print Network [OSTI]

    Nita-Rotaru, Cristina

    1 Virtual Classroom Extension for Effective Distance Education Radu Dondera, Chun Jia, Voicu to deliver quality education remotely. The system relies exclusively on commodity components, therefore it can be deployed in any classroom to allow any course to offer distance education seats. Keywords I.3

  20. Calculations of protective action distance for toxic chemical spills using nomographs

    SciTech Connect (OSTI)

    Lee, L.G.; Vail, J.A.; Gibeault, G.L.

    1995-04-01

    This document was produced for emergency use following a spill of liquid gas or finely divided solid (<100 micron) toxic chemicals. The information on the next few pages was kept deliberately terse and is limited to data and graphic aids needed for calculation of plume distance (protective action distance). All supporting material is provided as Appendices.

  1. Energy Displays and Environmental Behavior: The Role of Social Values and Psychological Distance of Climate Change

    E-Print Network [OSTI]

    McAuley, Derek

    distance of climate change in these effects. Method Study 1 (N=370) was a cross-sectional study. Participants filled in measures of their values and goals, psychological distance of climate change, and environmental behaviors. Study 2 (N=120) was a web-based experiment. A pre-test at the point of recruitment

  2. MEASURING AN ERUPTIVE PROMINENCE AT LARGE DISTANCES FROM THE SUN. I. IONIZATION AND EARLY EVOLUTION

    E-Print Network [OSTI]

    Howard, Tim

    MEASURING AN ERUPTIVE PROMINENCE AT LARGE DISTANCES FROM THE SUN. I. IONIZATION AND EARLY EVOLUTION characteristics at it moves away from the Sun. The prominence reaches complete ionization, or at least a state for an accompanying paper that reports on measurements of the prominence at large distances from the Sun using

  3. TIME-DISTANCE HELIOSEISMOLOGY: NOISE ESTIMATION L. Gizon and A. C. Birch

    E-Print Network [OSTI]

    Gizon, Laurent

    TIME-DISTANCE HELIOSEISMOLOGY: NOISE ESTIMATION L. Gizon and A. C. Birch W. W. Hansen Experimental ABSTRACT As in global helioseismology, the dominant source of noise in time-distance helioseismology oscillations. Characterizing noise is important for the interpretation and inversion of time

  4. Portal-Based True-Distance Heuristics for Path Finding Meir Goldenberg

    E-Print Network [OSTI]

    Schaeffer, Jonathan

    Portal-Based True-Distance Heuristics for Path Finding Meir Goldenberg Information Systems. In this paper, we introduce a new TDH, the portal-based heuristic. The domain is partitioned into regions and portals between regions are identified. True distances be- tween all pairs of portals are stored and used

  5. On the Impact of Energy Dissipation Model on Characteristic Distance in Wireless Networks

    E-Print Network [OSTI]

    Hossain, Ashraf

    2011-01-01

    In this paper we investigate the dependency of characteristic distance on energy dissipation model. Both the many-to-one and any-to-any communication paradigm have been presented for performance analysis. Characteristic distance has been derived for three different cases. This study will be useful for designing an energy-efficient wireless network where nodes are energy-constrained.

  6. Fast NJ-like algorithms to deal with incomplete distance matrices

    E-Print Network [OSTI]

    Criscuolo, Alexis; Gascuel, Olivier

    2008-03-26

    .0617 0.0687 0.0552 0.0555 0.074 20 0.0503 0.0600 0.0682 0.0560 0.0509 0.189 In the medium-level combination, distance matrices are directly estimated from each of the genes and then combined (using SDM) into the distance supermatrix. Topolological...

  7. Ages of globular clusters: breaking the age-distance degeneracy with the luminosity function

    E-Print Network [OSTI]

    Paolo Padoan; Raul Jimenez

    1996-03-14

    We extend our previous method to determine globular cluster ages using the luminosity function (Jimenez \\& Padoan 1996). We show that the luminosity function depends on both age and distance modulus and that it is possible to distinguish between the two. This method provides at the same time independent determinations of distance and age of a GC by simply counting the number of stars found inside specified luminosity bins. The main uncertainties in other traditional methods for determining GCs ages are absent (e.g. mixing length, color-$T_{\\rm eff}$ calibration, morphology of the color-magnitude diagram ). The distance modulus is the biggest uncertainty in determining the age of GCs. Here we show that the age can be determined with small uncertainty for any value of distance modulus using the LF and that the LF allows a determination of the distance modulus itself. This is explained by the fact that the luminosity function is affected by a change in distance-modulus in a way that is different from its time evolution. If GC stellar counts with statistical errors not larger than $3\\%$ are available, the age can be determined with an uncertainty of about 0.4 Gyr (independent of distance modulus, mixing length and color calibration) and the distance modulus with an uncertainty of about 0.04 mag.

  8. Bounds for the Distance Dependence of Correlation Functions of Entangled Photons in Waveguides

    E-Print Network [OSTI]

    Andrei Khrennikov; Borje Nilsson; Sven Nordebo; Igor Volovich

    2011-05-30

    The distance dependence of the probability of observing two photons in a waveguide is investigated. The Glauber correlation functions of the entangled photons in waveguides are considered and the spatial and temporal dependence of the correlation functions is evaluated. We derive upper bounds to the distance dependence of the probability of observing two photons. These inequalities should be possible to observe in experiments.

  9. StructuralHammingDistance Average SHD Results -Child -Sample Size 500

    E-Print Network [OSTI]

    Brown, Laura E.

    , and Hailfinder10 Networks. C22_complete_shd_results.tex; 5/08/2005; 16:24; p.2 #12;0 500 1000 1500 x MMHC OR1k=5 GES StructuralHammingDistance Average SHD Results - Child - Sample Size 500 Error Bars = +/- Std TPDA GES StructuralHammingDistance Average SHD Results - Child3 - Sample Size 500 Error Bars = +/- Std

  10. Choosing Good Distance Metrics and Local Planners for Probabilistic Roadmap Methods \\Lambda

    E-Print Network [OSTI]

    Dale, Lucia K.

    Choosing Good Distance Metrics and Local Planners for Probabilistic Roadmap Methods \\Lambda Nancy M evaluation of different distance metrics and local planners within the con text of probabilistic roadmap planners for use in motion planning methods, particularly probabilistic roadmap methods. Our study

  11. Internet TV: Implications for the long distance network A. M. Odlyzko

    E-Print Network [OSTI]

    Odlyzko, Andrew M.

    Internet TV: Implications for the long distance network A. M. Odlyzko AT&T Labs - Research amo TV to the Internet is likely to have little impact on the long distance network. The main reason of Internet backbones far beyond that required to carry all the broadcast TV signals. There will continue

  12. Fast Jacobi-type Algorithm for Computing Distances Between Linear Dynamical Systems

    E-Print Network [OSTI]

    Vidal, Ren

    Fast Jacobi-type Algorithm for Computing Distances Between Linear Dynamical Systems Nicolas D Jacobi-type algorithm that solves this problem. Each step of the algorithm is equivalent to finding, in this paper, we introduce a fast and accurate Jacobi-type algorithm for computing alignment distances. Our

  13. Transition Metal Dimer Internuclear Distances from Measured Force Constants Joseph L. Jules and John R. Lombardi*

    E-Print Network [OSTI]

    Lombardi, John R.

    Transition Metal Dimer Internuclear Distances from Measured Force Constants Joseph L. Jules distances, have been extended to the transition metal dimers to test which one gives the most accurate fit's and Guggenheimer's for the transition metal dimers. Although Pauling's rule gives the best results, the remarkable

  14. AN INTEGRATION TECHNOLOGY FOR LONG DISTANCE LOGISTICS AND SUPPLY CHAIN MANAGEMENT

    E-Print Network [OSTI]

    Peng, Yun

    1 AN INTEGRATION TECHNOLOGY FOR LONG DISTANCE LOGISTICS AND SUPPLY CHAIN MANAGEMENT Hyunbo Cho will continue to grow. That trade depends on many intercontinental, long-distance, logistics partners. Those) ensure interoperability among logistics applications; (2) provide shipment visibility to all trading

  15. Range Sustainability (VSP) PNWD-SA-7032 1

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 1 PNWD-SA-7032 Range Sustainability Module Using Visual Sample Plan (VSP) Software Range Sustainability ModuleRange Sustainability Module Using Visual Sample Sustainability (VSP) PNWD-SA-7032 2 PNWD-SA-7032 / 2 ObjectiveObjectiveObjective Learn how to use the Range

  16. First inductively coupled plasma-distance-of-flight mass spectrometer: instrument performance with a microchannel plate/phosphor imaging detector

    SciTech Connect (OSTI)

    Gundlach-Graham, Alexander W.; Dennis, Elise; Ray, Steven J.; Enke, Christie G.; Barinaga, Charles J.; Koppenaal, David W.; Hieftje, Gary M.

    2013-09-01

    Here we describe the first combination of a Distance-of-Flight Mass Spectrometry (DOFMS) instrument and an inductively coupled plasma (ICP) ion source. DOFMS is a velocity-based MS technique in which ions of a range of mass-to-charge (m/z) values are detected simultaneously along the length of a spatially selective detector. As a relative of time-of-flight (TOF) MS, DOFMS leverages benefits fromboth TOFMS and spatially dispersive MS. The simultaneous detection of groups of m/z values improves dynamic range by spreading ion signal across many detector elements and reduces correlated noise by signal ratioing. To ascertain the performance characteristics of the ICP-DOFMS instrument, we have employed a microchannel-plate/phosphor detection assembly with a scientific CCD to capture images of the phosphor plate. With this simple (and commercially available) detection scheme, elemental detection limits from 230 ng L*1 and a linear dynamic range of 5 orders of magnitude (10106 ng L1) have been demonstrated. Additionally, a competitive isotope-ratio precision of 0.1% RSD has been achieved with only a 6 s signal integration period. In addition to first figures of merit, this paper outlines technical considerations for the design of the ICP-DOFMS.

  17. Thermal mass loss of protoplanetary cores with hydrogen-dominated atmospheres: The influences of ionization and orbital distance

    E-Print Network [OSTI]

    Erkaev, N V; Odert, P; Kislyakova, K G; Johnstone, C P; Gdel, M; Khodachenko, M L

    2016-01-01

    We investigate the loss rates of the hydrogen atmospheres of terrestrial planets with a range of masses and orbital distances by assuming a 100 times stronger soft X-ray and extreme ultraviolet (XUV) flux. We apply a 1D upper atmosphere radiation absorption and hydrodynamic escape model that takes into account ionization, dissociation and recombination to calculate hydrogen mass loss rates. We study the effect of the ionization, dissociation and recombination on the thermal mass loss rates of hydrogen-dominated super-Earths and compare the results with those obtained by the energy-limited escape formula which is widely used for mass loss evolution studies. Our results indicate that the energy-limited formula can to a great extent over- or underestimate the hydrogen mass loss rates by amounts that depend on the stellar XUV flux and planetary parameters such as mass, size, effective temperature, and XUV absorption radii.

  18. Possible violation of Newtonian gravitational law at small distances and constraints on it from the Casimir effect

    E-Print Network [OSTI]

    V. M. Mostepanenko; M. Novello

    2000-08-03

    The recent ideas that the gravitational and gauge interactions become united at the weak scale lead to Yukawa-type corrections to the Newtonian gravitational law at small distances. We briefly summarize the best constraints on these corrections obtained recently from the experiments on the measurement of the Casimir force. The new constraints on the Yukawa-type interaction are derived from the latest Casimir force measurement between a large gold coated sphere and flat disk using an atomic force microscope. The obtained constraints are stronger up to 19 times comparing the previous experiment with aluminum surfaces and up to 4500 times comparing the Casimir force measurements between dielectrics. The application range of constraints obtained by means of an atomic force microscope is extended.

  19. First Parallax Measurements Towards a 6.7 GHz Methanol Maser with the Australian Long Baseline Array - Distance to G339.884-1.259

    E-Print Network [OSTI]

    Krishnan, V; Reid, M J; Brunthaler, A; Sanna, A; McCallum, J; Reynolds, C; Bignall, H E; Phillips, C J; Dodson, R; Rioja, M; Caswell, J L; Chen, X; Dawson, J R; Fujisawa, K; Goedhart, S; Green, J A; Hachisuka, K; Honma, M; Menten, K; Shen, Z Q; Voronkov, M A; Walsh, A J; Xu, Y; Zhang, B; Zheng, X W

    2015-01-01

    We have conducted the first parallax and proper motion measurements of 6.7 GHz methanol maser emission using the Australian Long Baseline Array (LBA). The parallax of G339.884$-$1.259 measured from five epochs of observations is 0.48$\\pm $0.08 mas, corresponding to a distance of $2.1^{+0.4}_{-0.3}$ kpc, placing it in the Scutum spiral arm. This is consistent (within the combined uncertainty) with the kinematic distance estimate for this source at 2.5$\\pm $0.5 kpc using the latest Solar and Galactic rotation parameters. We find from the Lyman continuum photon flux that the embedded core of the young star is of spectral type B1, demonstrating that luminous 6.7 GHz methanol masers can be associated with high-mass stars towards the lower end of the mass range.

  20. Cluster formation in fluids with competing short-range and long-range interactions

    SciTech Connect (OSTI)

    Sweatman, Martin B., E-mail: martin.sweatman@ed.ac.uk; Fartaria, Rui [Institute of Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh EH9 3JL (United Kingdom)] [Institute of Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh EH9 3JL (United Kingdom); Lue, Leo [Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom)] [Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom)

    2014-03-28

    We investigate the low density behaviour of fluids that interact through a short-ranged attraction together with a long-ranged repulsion (SALR potential) by developing a molecular thermodynamic model. The SALR potential is a model of effective solute interactions where the solvent degrees of freedom are integrated-out. For this system, we find that clusters form for a range of interaction parameters where attractive and repulsive interactions nearly balance, similar to micelle formation in aqueous surfactant solutions. We focus on systems for which equilibrium behaviour and liquid-like clusters (i.e., droplets) are expected, and find in addition a novel coexistence between a low density cluster phase and a high density cluster phase within a very narrow range of parameters. Moreover, a simple formula for the average cluster size is developed. Based on this formula, we propose a non-classical crystal nucleation pathway whereby macroscopic crystals are formed via crystal nucleation within microscopic precursor droplets. We also perform large-scale Monte Carlo simulations, which demonstrate that the cluster fluid phase is thermodynamically stable for this system.

  1. Influence of compensator thickness, field size, and off-axis distance on the effective attenuation coefficient of a cerrobend compensator for intensity-modulated radiation therapy

    SciTech Connect (OSTI)

    Haghparast, Abbas; Hashemi, Bijan; Eivazi, Mohammad Taghi

    2013-04-01

    Intensity-modulated radiation therapy (IMRT) can be performed by using compensators. To make a compensator for an IMRT practice, it is required to calculate the effective attenuation coefficient (?{sub eff}) of its material, which is affected by various factors. We studied the effect of the variation of the most important factors on the calculation of the ?{sub eff} of the cerrobend compensator for 6-MV photon beams, including the field size, compensator thickness, and off-axis distance. Experimental measurements were carried out at 100 cm source-to-surface distance and 10 cm depth for the 6-MV photon beams of an Elekta linac using various field size, compensator thickness, and off-axis settings. The field sizes investigated ranged from 4 4 to 25 25 cm{sup 2} and the cerrobend compensator thicknesses from 0.56 cm. For a fixed compensator thickness, variation of the ?{sub eff} with the field size ranged from 3.76.8%, with the highest value attributed to the largest compensator thickness. At the reference field size of 10 10 cm{sup 2}, the ?{sub eff} varied by 16.5% when the compensator thickness was increased from 0.56 cm. However, the variation of the ?{sub eff} with the off-axis distance was only 0.99% at this field size, whereas for the largest field size, it was more significant. Our results indicated that the compensator thickness and field size have the most significant effect on the calculation of the compensator ?{sub eff} for the 6-MV photon beam. Therefore, it is recommended to consider these parameters when calculating the compensator thickness for an IMRT practice designed for these beams. The off-axis distance had a significant effect on the calculation of the ?{sub eff} only for the largest field size. Hence, it is recommended to consider the effect of this parameter only for field sizes larger than 25 25 cm{sup 2}.

  2. Compound and Elemental Analysis At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Compound and Elemental Analysis At Northern Basin & Range Region (Laney, 2005) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration...

  3. Development of a Thermal Enhancer ? for Combined Partial Range...

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

    Thermal Enhancer for Combined Partial Range Burning and Hydrocarbon Dosing Development of a Thermal Enhancer for Combined Partial Range Burning and Hydrocarbon Dosing Poster...

  4. Indonesia-Bringing a Range of Supported Mitigation Activities...

    Open Energy Info (EERE)

    Indonesia-Bringing a Range of Supported Mitigation Activities in Selected Countries to the Next Level Jump to: navigation, search Name Indonesia-Bringing a Range of Supported...

  5. Analyses Guided Optimization of Wide Range and High Efficiency...

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

    Analyses Guided Optimization of Wide Range and High Efficiency Turbocharger Compressor Analyses Guided Optimization of Wide Range and High Efficiency Turbocharger Compressor...

  6. An Approximate Analytical Algorithm for Evaluating the Distances in a Dark Energy Dominated Universe

    E-Print Network [OSTI]

    T. Wickramasinghe

    2007-12-05

    The most recent cosmological observations indicate that the present universe is flat and vacuum dominated. In such a universe, the distance measurements are always difficult and involve numerical computations. In this paper, it is shown that the most fundamental distance measurement of cosmology, the luminosity distance, for such a universe can be obtained in an approximate analytical way with very small errors of less than 0.02% up to %z = 5$ for any value of vacuum energy. The analytical calculation is shown to be exceedingly efficient, as compared to the traditional numerical methods.

  7. POLYGENETIC TOPOGRAPHY OF THE CASCADE RANGE, WASHINGTON STATE, USA

    E-Print Network [OSTI]

    Montgomery, David R.

    POLYGENETIC TOPOGRAPHY OF THE CASCADE RANGE, WASHINGTON STATE, USA SARA GRAN MITCHELL Range of Washington State by analyzing the topography, geology, and exhumation patterns across the range-relief topography, 2) post-Miocene surface uplift of the range superimposed on pre-existing high-relief topography

  8. Range-gated field disturbance sensor with range-sensitivity compensation

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-05-28

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudorandomly modulated so that bursts in the sequence of bursts have a phase which varies. 8 figs.

  9. Range-gated field disturbance sensor with range-sensitivity compensation

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudorandomly modulated so that bursts in the sequence of bursts have a phase which varies.

  10. An evaluation of inductance loop detector lead length and optimal speed trap distance

    E-Print Network [OSTI]

    Hamm, Robert Alan

    1994-01-01

    component of freeway management systems is the inductance loop detector. This research effort evaluated the use of inductance loop detectors in a freeway management situation to determine maximum permissible lead lengths and an optimal speed trap distance...

  11. Reuse Distance Based Circuit Replacement in Silicon Photonic Interconnection Networks for HPC

    E-Print Network [OSTI]

    Bergman, Keren

    -scale distance, can help to further scale data-movement capabilities in high performance computing (HPC demands within high performance computing (HPC) systems. Silicon photonic (SiP) interconnects [1-3], which

  12. Connes distance function on fuzzy sphere and the connection between geometry and statistics

    SciTech Connect (OSTI)

    Devi, Yendrembam Chaoba Chakraborty, Biswajit; Prajapat, Shivraj; Mukhopadhyay, Aritra K.; Scholtz, Frederik G.

    2015-04-15

    An algorithm to compute Connes spectral distance, adaptable to the Hilbert-Schmidt operatorial formulation of non-commutative quantum mechanics, was developed earlier by introducing the appropriate spectral triple and used to compute infinitesimal distances in the Moyal plane, revealing a deep connection between geometry and statistics. In this paper, using the same algorithm, the Connes spectral distance has been calculated in the Hilbert-Schmidt operatorial formulation for the fuzzy sphere whose spatial coordinates satisfy the su(2) algebra. This has been computed for both the discrete and the Perelemovs SU(2) coherent state. Here also, we get a connection between geometry and statistics which is shown by computing the infinitesimal distance between mixed states on the quantum Hilbert space of a particular fuzzy sphere, indexed by n ? ?/2.

  13. Accident causation study on roadways with limited sight distance crest vertical curves

    E-Print Network [OSTI]

    Stoddard, Angela May

    1994-01-01

    reflect the driver and vehicle population currently on the transportation network. An accident causation study was conducted to determine if roadways with limited stopping sight distance present a safety hazard for the transportation network. Rural two...

  14. Mary A. Favret, War at a Distance: Romanticism and the Making of Modern Wartime: a Review

    E-Print Network [OSTI]

    Jackson, Noel B.

    2010-01-01

    Mary Favrets War at a Distance: Romanticism and the Making of Modern Wartime is a brilliant, beautifully written book on the experience of war in British Romantic writing. Offering intricate close readings of Cowper, ...

  15. Using Semantic Similarity to Predict Angle and Distance of Objects in Images

    E-Print Network [OSTI]

    Davies, Jim

    sterling@sterlingsomers .com Jonathan Gagné Dept. Systems Design Engineering University of Waterloo 200Using Semantic Similarity to Predict Angle and Distance of Objects in Images Sterling Somers

  16. Measuring Type Ia Supernova Distances and Redshifts From Their Multi-band Light Curves

    E-Print Network [OSTI]

    Kim, Alex G.; Miquel, Ramon

    2007-01-01

    curve, http://supernovae.in2p3.fr/ ? guy/salt/index.htmlfor large numbers of supernovae; so many that it would becosmology:distance scale, supernovae:general Introduction

  17. Perceptions of Administrators on the Use of Distance Education in Texas Public Schools

    E-Print Network [OSTI]

    Rabroker, Raymond Bernard Jr.

    2012-02-14

    to the implementation of distance education. The study included a series of 17 interviews with school principals and superintendents. Based on these interviews, a survey instrument was developed and sent to a larger sample of administrators. The sample population...

  18. The development of an instrument to assess student opinions of the quality of distance education

    E-Print Network [OSTI]

    Chaney, Elizabeth Hensleigh

    2009-05-15

    ; and, (3) to develop an instrument to assess student opinions of the quality of distance education. Dillman's (2000) steps of pretesting and the instrument development framework in the Standards (1999) were used, and data were collected from students...

  19. KINEMATIC DISTANCES TO MOLECULAR CLOUDS IDENTIFIED IN THE GALACTIC RING SURVEY

    E-Print Network [OSTI]

    Roman-Duval, Julia

    Kinematic distances to 750 molecular clouds identified in the [superscript 13]CO J = 1 ? 0 Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey (GRS) are derived assuming the Clemens rotation ...

  20. Fact #612: March 1, 2010 The Distance of Trips to Work

    Broader source: Energy.gov [DOE]

    The recently released Nationwide Household Travel Survey shows that nearly 60% of work trips are 10 miles or less in distance. Only 9% of work trips are over 30 miles. The average work trip...

  1. Finite Prime Distance Graphs and 2-Odd Graphs Joshua D. Laison, Colin Starr, and Andrea Walker

    E-Print Network [OSTI]

    Laison, Josh

    that trees, cycles, and bipartite graphs are prime distance graphs, and that Dutch windmill graphs and paper, Vinogradov's Theorem, and Ramare's Theorem, respectively; and we show that Dutch windmill graphs and paper

  2. Efficient and private distance approximation in the communication and streaming models

    E-Print Network [OSTI]

    Woodruff, David Paul, 1980-

    2007-01-01

    This thesis studies distance approximation in two closely related models - the streaming model and the two-party communication model. In the streaming model, a massive data stream is presented in an arbitrary order to a ...

  3. Detailed spectroscopic analysis of SN 1987A: The distance to the LMC using the SEAM method

    E-Print Network [OSTI]

    2002-01-01

    D. & Branch, D. 1990, in Supernovae, ed. J. C. Wheeler & T.of determining distances to supernovae. We ?nd that thealso suggest that Type IIP supernovae will be most useful as

  4. Effects of symbol type and numerical distance on the human event-related potential

    E-Print Network [OSTI]

    2010-01-01

    face process- ing: An ERP study. Clinical Neurophysiology,J. , & Pernier, J. (1999). ERP manifestations of processingP300 compo- nent of the ERP re?ects the symbolic distance

  5. HIPPOCRATES : A Tool for Distance Education C. Bouras D. Fotakis V. Kapoulas P. Lampsas G. Papoutsopoulos

    E-Print Network [OSTI]

    of as a distributed transparency projector. The teacher can project transparencies on the screens of the students committees (European Round Table, IRDAC, etc.), is by flexible and distance education methods exploiting

  6. Development of a culturally appropriate process for assessing distance learning readiness in Latin America

    E-Print Network [OSTI]

    Villalobos Peñ alosa, Patricia

    2009-05-15

    The purpose of this study was to develop an instrument for assessing distance learning readiness of institutions in Latin America for international projects of food and agriculture with higher education institutions in the ...

  7. Non-linear $?$-model for long range disorder and quantum chaos

    E-Print Network [OSTI]

    V. R. Kogan; K. B. Efetov

    2002-11-14

    We suggest a new scheme of derivation of a non-linear ballistic $\\sigma$-model for a long range disorder and quantum billiards. The derivation is based on writing equations for quasiclassical Green functions for a fixed long range potential and exact representation of their solutions in terms of functional integrals over supermatrices $Q$ with the constraint $Q^2=1$. Averaging over the long range disorder or energy we are able to write a ballistic $\\sigma$-model for all distances exceeding the electron wavelength. Neither singling out slow modes nor a saddle-point approximation are used in the derivation. Carrying out a course graining procedure that allows us to get rid off scales in the Lapunov region we come to a reduced $\\sigma$-model containing a conventional collision term. For quantum billiards, we demonstrate that, at not very low frequencies, one can reduce the $\\sigma$-model to a one-dimensional $\\sigma$-model on periodic orbits. Solving the latter model, first approximately and then exactly, we resolve the problem of repetitions.

  8. Window-based method for approximating the Hausdorff in three-dimensional range imagery

    DOE Patents [OSTI]

    Koch, Mark W. (Albuquerque, NM)

    2009-06-02

    One approach to pattern recognition is to use a template from a database of objects and match it to a probe image containing the unknown. Accordingly, the Hausdorff distance can be used to measure the similarity of two sets of points. In particular, the Hausdorff can measure the goodness of a match in the presence of occlusion, clutter, and noise. However, existing 3D algorithms for calculating the Hausdorff are computationally intensive, making them impractical for pattern recognition that requires scanning of large databases. The present invention is directed to a new method that can efficiently, in time and memory, compute the Hausdorff for 3D range imagery. The method uses a window-based approach.

  9. Long-range coupling and scalable architecture for superconducting flux qubits

    E-Print Network [OSTI]

    Austin G. Fowler; William F. Thompson; Zhizhong Yan; Ashley M. Stephens; B. L. T. Plourde; Frank K. Wilhelm

    2007-04-21

    Constructing a fault-tolerant quantum computer is a daunting task. Given any design, it is possible to determine the maximum error rate of each type of component that can be tolerated while still permitting arbitrarily large-scale quantum computation. It is an underappreciated fact that including an appropriately designed mechanism enabling long-range qubit coupling or transport substantially increases the maximum tolerable error rates of all components. With this thought in mind, we take the superconducting flux qubit coupling mechanism described in PRB 70, 140501 (2004) and extend it to allow approximately 500 MHz coupling of square flux qubits, 50 um a side, at a distance of up to several mm. This mechanism is then used as the basis of two scalable architectures for flux qubits taking into account crosstalk and fault-tolerant considerations such as permitting a universal set of logical gates, parallelism, measurement and initialization, and data mobility.

  10. Type IIP supernovae as cosmological probes: A SEAM distance to SN1999em

    SciTech Connect (OSTI)

    Baron, E.; Nugent, Peter E.; Branch, David; Hauschildt, Peter H.

    2004-06-01

    Because of their intrinsic brightness, supernovae make excellent cosmological probes. We describe the spectral-fitting expanding atmosphere method (SEAM) for obtaining distances to Type IIP supernovae (SNe IIP) and present a distance to SN 1999em for which a Cepheid distance exists. Our models give results consistent with the Cepheid distance, even though we have not attempted to tune the underlying hydrodynamical model but have simply chosen the best fits. This is in contradistinction to the expanding photosphere method (EPM), which yields a distance to SN 1999em that is 50 percent smaller than the Cepheid distance. We emphasize the differences between the SEAM and the EPM. We show that the dilution factors used in the EPM analysis were systematically too small at later epochs. We also show that the EPM blackbody assumption is suspect. Since SNe IIP are visible to redshifts as high as z {approx}< 6, with the James Webb Space Telescope, the SEAM may be a valuable probe of the early universe.

  11. Explanations for bird species range size: ecological correlates and phylogenetic

    E-Print Network [OSTI]

    Carrascal, Luis M.

    effects in the Canary Islands Luis M. Carrascal1 *, Javier Seoane2 , David Palomino3 and Vicente Polo4 components while controlling for phylogenetic effects. Location The seven main islands of the Canary the literature for data on occupancy, the distance between the Canary Islands and the nearest distribution border

  12. 217 km long distance photon-counting optical time-domain reflectometry based on ultra-low noise up-conversion single photon detector

    E-Print Network [OSTI]

    Guo-Liang Shentu; Qi-Chao Sun; Xiao Jiang; Xiao-Dong Wang; Jason S. Pelc; M. M. Fejer; Qiang Zhang; Jian-Wei Pan

    2013-08-05

    We demonstrate a photon-counting optical time-domain reflectometry with 42.19 dB dynamic range using an ultra-low noise up-conversion single photon detector. By employing the long wave pump technique and a volume Bragg grating, we reduce the noise of our up-conversion single photon detector, and achieve a noise equivalent power of -139.7 dBm/sqrt(Hz). We perform the OTDR experiments using a fiber of length 216.95 km, and show that our system can identify defects along the entire fiber length with a distance resolution better than 10 cm in a measurement time of 13 minutes.

  13. Power and spectral index anisotropy of the entire inertial range of turbulence in the fast solar wind

    E-Print Network [OSTI]

    Wicks, R T; Chen, C H K; Schekochihin, A A

    2010-01-01

    We measure the power and spectral index anisotropy of high speed solar wind turbulence from scales larger than the outer scale down to the ion gyroscale, thus covering the entire inertial range. We show that the power and spectral indices at the outer scale of turbulence are approximately isotropic. The turbulent cascade causes the power anisotropy at smaller scales manifested by anisotropic scalings of the spectrum: close to k^{-5/3} across and k^{-2} along the local magnetic field, consistent with a critically balanced Alfvenic turbulence. By using data at different radial distances from the Sun, we show that the width of the inertial range does not change with heliocentric distance and explain this by calculating the radial dependence of the ratio of the outer scale to the ion gyroscale. At the smallest scales of the inertial range, close to the ion gyroscale, we find an enhancement of power parallel to the magnetic field direction coincident with a decrease in the perpendicular power. This is most likely ...

  14. Operation Greenhouse. Scientific Director's Report. Annex 1. 12. Long-distance measurement of energy yield of an atomic explosion. Nuclear explosions 1951

    SciTech Connect (OSTI)

    Hudgins, A.J.

    1984-10-31

    The energy yield of an atomic explosion was determined at logn distance by measuring the time variation of the light from the explosion and applying an empirical formula that relates this to the energy yield. The light was detected by an RCA 5819 photomultiplier tube and was recorded on a magnetic-tape recorder. Measurements at Shot Easy were made from A C-54 airplane flying at 12,500 ft at a distance of 630 miles northwest of Eniwetok. The time to the minimum of light intensity was 23.5 + or - 0.8 msec, corresponding to a yield of 53 + or - 4 kt. The yield calculated from the radiochemical measurements was 46.8 + or - 1.0 kt. The peak intensity of the flash above the ambient was measured to be 1.7 millicandles/sq ft. This experiment indicated that energy yield can be measured at a distance greater than 630 miles at night. Possible propagation mechanisms are discussed. Studies of the maximum range in daylight and of improvements in technique are suggested.

  15. Wide tracking range, auto ranging, low jitter phase lock loop for swept and fixed frequency systems

    DOE Patents [OSTI]

    Kerner, Thomas M. (Manorville, NY)

    2001-01-01

    The present invention provides a wide tracking range phase locked loop (PLL) circuit that achieves minimal jitter in a recovered clock signal, regardless of the source of the jitter (i.e. whether it is in the source or the transmission media). The present invention PLL has automatic harmonic lockout detection circuitry via a novel lock and seek control logic in electrical communication with a programmable frequency discriminator and a code balance detector. (The frequency discriminator enables preset of a frequency window of upper and lower frequency limits to derive a programmable range within which signal acquisition is effected. The discriminator works in combination with the code balance detector circuit to minimize the sensitivity of the PLL circuit to random data in the data stream). In addition, the combination of a differential loop integrator with the lock and seek control logic obviates a code preamble and guarantees signal acquisition without harmonic lockup. An adaptive cable equalizer is desirably used in combination with the present invention PLL to recover encoded transmissions containing a clock and/or data. The equalizer automatically adapts to equalize short haul cable lengths of coaxial and twisted pair cables or wires and provides superior jitter performance itself. The combination of the equalizer with the present invention PLL is desirable in that such combination permits the use of short haul wires without significant jitter.

  16. Tonopah test range - outpost of Sandia National Laboratories

    SciTech Connect (OSTI)

    Johnson, L.

    1996-03-01

    Tonopah Test Range is a unique historic site. Established in 1957 by Sandia Corporation, Tonopah Test Range in Nevada provided an isolated place for the Atomic Energy Commission to test ballistics and non-nuclear features of atomic weapons. It served this and allied purposes well for nearly forty years, contributing immeasurably to a peaceful conclusion to the long arms race remembered as the Cold War. This report is a brief review of historical highlights at Tonopah Test Range. Sandia`s Los Lunas, Salton Sea, Kauai, and Edgewood testing ranges also receive abridged mention. Although Sandia`s test ranges are the subject, the central focus is on the people who managed and operated the range. Comments from historical figures are interspersed through the narrative to establish this perspective, and at the end a few observations concerning the range`s future are provided.

  17. Geographic Information System At Northern Basin & Range Region...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At Northern Basin & Range Region (Blewitt, Et Al., 2003) Exploration...

  18. Range Sustainability (VSP) PNWD-SA-7032 25

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 25 PNWD-SA-7032 / 25 Sampling Goals Establish Boundary of Contamination Partial Boundary #12;Range Sustainability (VSP) PNWD-SA-7032 26 PNWD-SA-7032 / 26 Required Samples #12;Range Sustainability (VSP) PNWD-SA-7032 27 PNWD-SA-7032 / 27 Specify Constituents of Concern

  19. Range Sustainability (VSP) PNWD-SA-7032 41

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 41 PNWD-SA-7032 / 41 Assumptions Underlying the UCLs. #12;Range Sustainability (VSP) PNWD-SA-7032 42 PNWD-SA-7032 / 42 Hypothetical Case Study that the action limit for the RDX mean (4.4 ppm) is not exceeded. #12;Range Sustainability (VSP) PNWD-SA-7032 43

  20. Range Sustainability (VSP) PNWD-SA-7032 57

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 57 PNWD-SA-7032 / 57 Sample Information Box for Segment 4 the RDX Measurements for the 2 MI Samples in Segment 4 #12;Range Sustainability (VSP) PNWD-SA-7032 58 PNWD;Range Sustainability (VSP) PNWD-SA-7032 59 PNWD-SA-7032 / 59 Sample Information Box for Segment 4 UCL

  1. Range Sustainability (VSP) PNWD-SA-7032 17

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 17 PNWD-SA-7032 / 17 Edit Sample Areas Define New Sample Area Defined Sample Area #12;Range Sustainability (VSP) PNWD-SA-7032 18 PNWD-SA-7032 / 18 "New Area" button on the Toolbar Defined Sample Area #12;Range Sustainability (VSP) PNWD-SA-7032 19 PNWD-SA-7032

  2. Photonic microwave bandpass filter with improved dynamic range

    E-Print Network [OSTI]

    Yao, Jianping

    Photonic microwave bandpass filter with improved dynamic range Yu Yan and Jianping Yao* Microwave A technique to improve the dynamic range of a photonic microwave bandpass filter is proposed and experi. The dynamic range of the photonic microwave bandpass filter is increased by reducing the optical

  3. Bylaws of the Range Cattle Research and Education Center

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    Bylaws of the Range Cattle Research and Education Center University of Florida December 11, 2009 Preamble The shared goals of the faculty and administration of the Range Cattle Research and Education Governance of the Range Cattle Research and Education Center These Bylaws establish the general principles

  4. Institute of Food and Agricultural Sciences Range Cattle

    E-Print Network [OSTI]

    Ma, Lena

    Institute of Food and Agricultural Sciences Range Cattle Research and Education Center Field Day at the Range Cattle Research and Education Center in Ona, Florida. The laboratory provides forage testing digestible nutrients (TDN). Mail samples to Forage Extension Laboratory, UF/IFAS, Range Cattle REC, 3401

  5. VOLUMETRIC MODELING THROUGH FUSION OF MULTIPLE RANGE IMAGES WITH CONFIDENCE

    E-Print Network [OSTI]

    Abidi, Mongi A.

    VOLUMETRIC MODELING THROUGH FUSION OF MULTIPLE RANGE IMAGES WITH CONFIDENCE ESTIMATE A Thesis application using range images. A review of the volumetric modeling literature leads us to believe that we can to be as e cient with range images as other volumetric approaches. The second half of this thesis describes

  6. Great ranging associated with greater reproductive investment in mammals

    E-Print Network [OSTI]

    Pontzer, Herman

    intake of Enet(J/day) acquires food energy at a constant rate B (J/m) and spends energy on travel at some rate C (J/m), it must travel sufficient distance, D (m/day), so that D (BC) Enet. Perhaps surprisingly movement dis- tances to be energetically beneficial, since greater D will lead to greater Enet as long as B

  7. Distance matters: the impact of gene proximity in bacterial gene regulation

    E-Print Network [OSTI]

    Otto Pulkkinen; Ralf Metzler

    2013-05-13

    Following recent discoveries of colocalization of downstream-regulating genes in living cells, the impact of the spatial distance between such genes on the kinetics of gene product formation is increasingly recognized. We here show from analytical and numerical analysis that the distance between a transcription factor (TF) gene and its target gene drastically affects the speed and reliability of transcriptional regulation in bacterial cells. For an explicit model system we develop a general theory for the interactions between a TF and a transcription unit. The observed variations in regulation efficiency are linked to the magnitude of the variation of the TF concentration peaks as a function of the binding site distance from the signal source. Our results support the role of rapid binding site search for gene colocalization and emphasize the role of local concentration differences.

  8. Relevant distance between two different instances of the same potential energy in protein folding

    E-Print Network [OSTI]

    Jose Luis Alonso; Pablo Echenique

    2005-04-21

    In the context of complex systems and, particularly, of protein folding, a physically meaningful distance is defined which allows to make useful statistical statements about the way in which energy differences are modified when two different instances of the same potential-energy function are used. When the two instances arise from the fact that different algorithms or different approximations are used, the distance herein defined may be used to evaluate the relative accuracy of the two methods. When the difference is due to a change in the free parameters of which the potential depends on, the distance can be used to quantify, in each region of parameter space, the robustness of the modeling to such a change and this, in turn, may be used to assess the significance of a parameters' fit. Both cases are illustrated with a practical example: the study of the Poisson-based solvation energy in the Trp-Cage protein (PDB code 1L2Y).

  9. Estimation and validation of mode distances for the 1993 Commodity Flow Survey

    SciTech Connect (OSTI)

    Middendorf, D.P.; Bronzini, M. S.; Peterson, B.; Liu, Cheng; Chin, Shih-Miao

    1995-09-01

    The 1993 Commodity Flow Survey (CFS) collected shipment data from a sample of approximately 200,000 domestic business establishments. Each selected establishment provided information on origin, destination, commodity, shipment weight and value, and modes of transport for a sample of its outbound shipments. One data item not reported by CFS participants was shipment distance. This important piece of information was estimated by simulating probable routes using computer models of the highway, rail, air, waterway, and pipeline networks and their interconnections. This paper describes the nature of the shipment distance estimation problem, the procedures used to estimate mode-specific distances between origin and destination ZIP codes, and the techniques used to validate the results.

  10. Calculating Luminosity Distance versus Redshift in FLRW Cosmology via Homotopy Perturbation Method

    E-Print Network [OSTI]

    V. K. Shchigolev

    2015-12-01

    We propose an efficient analytical method for estimating the luminosity distance in a homogenous Friedmann-Lema\\^itre-Robertson-Walker (FLRW) model of the Universe. This method is based on the homotopy perturbation method (HPM), which has high accuracy in many nonlinear problems, and can be easily implemented. For analytical calculation of the luminosity distance, we offer to proceed not from the computation of the integral, which determines it, but from the solution of a certain differential equation with corresponding initial conditions. Solving this equation by means of HPM, we obtain the approximate analytical expressions for the luminosity distance as a function of redshift for two different types of homotopy. Possible extension of this method to other cosmological models is also discussed.

  11. The Globular Cluster Luminosity Function: New Progress in Understanding an Old Distance Indicator

    E-Print Network [OSTI]

    Tom Richtler

    2003-04-16

    I review the Globular Cluster Luminosity Function (GCLF) with emphasis on recent observational data and theoretical progress. As is well known, the turn-over magnitude (TOM) is a good distance indicator for early-type galaxies within the limits set by data quality and sufficient number of objects. A comparison with distances derived from surface brightness fluctuations with the available TOMs in the V-band reveals, however, many discrepant cases. These cases often violate the condition that the TOM should only be used as a distance indicator in old globular cluster systems. The existence of intermediate age-populations in early-type galaxies likely is the cause of many of these discrepancies. The connection between the luminosity functions of young and old cluster systems is discussed on the basis of modelling the dynamical evolution of cluster systems. Finally, I briefly present the current ideas of why such a universal structure as the GCLF exists.

  12. Bursting synchronization in networks with long-range coupling mediated by a diffusing chemical substance

    E-Print Network [OSTI]

    R. L. Viana; A. M. Batista; C. A. S. Batista; J. C. A. de Pontes; F. A. dos S. Silva; S. R. Lopes

    2011-09-15

    Many networks of physical and biological interest are characterized by a long-range coupling mediated by a chemical which diffuses through a medium in which oscillators are embedded. We considered a one-dimensional model for this effect for which the diffusion is fast enough so as to be implemented through a coupling whose intensity decays exponentially with the lattice distance. In particular, we analyzed the bursting synchronization of neurons described by two timescales (spiking and bursting activity), and coupled through such a long-range interaction network. One of the advantages of the model is that one can pass from a local (Laplacian) type of coupling to a global (all-to-all) one by varying a single parameter in the interaction term. We characterized bursting synchronization using an order parameter which undergoes a transition as the coupling parameters are changed through a critical value. We also investigated the role of an external time-periodic signal on the bursting synchronization properties of the network. We show potential applications in the control of pathological rhythms in biological neural networks.

  13. Combined distance-of-flight and time-of-flight mass spectrometer

    DOE Patents [OSTI]

    Enke, Christie G; Ray, Steven J; Graham, Alexander W; Hieftje, Gary M; Barinaga, Charles J; Koppenaal, David W

    2014-02-11

    A combined distance-of-flight mass spectrometry (DOFMS) and time-of-flight mass spectrometry (TOFMS) instrument includes an ion source configured to produce ions having varying mass-to-charge ratios, a first detector configured to determine when each of the ions travels a predetermined distance, a second detector configured to determine how far each of the ions travels in a predetermined time, and a detector extraction region operable to direct portions of the ions either to the first detector or to the second detector.

  14. Shielding at a distance due to anomalous resonance in superlens with eccentric core

    E-Print Network [OSTI]

    Sanghyeon Yu; Mikyoung Lim

    2015-04-18

    The cylindrical plasmonic structure with concentric core exhibits the anomalous localized resonance and the resulting cloaking effect. It turns out that the plasmonic structure of eccentric core also has the anomalous resonant behavior. Differently from the concentric case, the eccentric superlens has the shielding effect as well as the cloaking effect depending on the radii of core and shell and the distance between them, where the shielding region is located at a distance from the device. In this paper, we investigate the anomalous resonance and the shielding effect in superlens with eccentric core using the m\\"{o}bius transformation which maps the eccentric annulus to an concentric annulus.

  15. Tonopah Test Range Post-Closure Inspection Annual Report, Tonopah Test Range, Nevada, Calendar Year 2002

    SciTech Connect (OSTI)

    R. B. Jackson

    2003-08-01

    This Post-Closure Inspection Annual Report provides documentation of the semiannual inspections conducted at the following Corrective Action Units (CAU)s: CAU 400: Bomblet Pit and Five Points Landfill; CAU 404: Roller Coaster Lagoons and Trench; CAU 407: Roller Coaster RadSafe Area; CAU 424: Area 3 Landfill Complexes; CAU 426: Cactus Spring Waste Trenches; CAU 427: Septic Waste Systems 2, 6; and CAU 453: Area 9 UXO Landfill, all located at the Tonopah Test Range, Nevada. Post-closure inspections are not required at CAU 400 but are conducted to monitor vegetation and fencing at the site. Site inspections were conducted in May and November 2002. All site inspections were made after Nevada Division of Environmental Protection (NDEP) approval of the appropriate Closure Report (CR), excluding CAU 400 which did not require a CR, and were conducted in accordance with the Post-Closure Inspection Plans in the NDEP-approved CRs. Post-closure inspections conducted during 2002 identified several areas requiring maintenance/repairs. Maintenance work and proposed additional monitoring are included in the appropriate section for each CAU. This report includes copies of the Post-Closure Inspection Plans, Post-Closure Inspection Checklists, copies of the field notes, photographs, and the Post-Closure Vegetative Monitoring Report. The Post-Closure Inspection Plan for each CAU is located in Attachment A. Post-Closure Inspection Checklists are in Attachment B. Copies of the field notes from each inspection are included in Attachment C. Attachment D consists of the photographic logs and photographs of the sites. The post-closure vegetative monitoring report for calendar year 2002 is included in Attachment E.

  16. Geographic Information System At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Nash & Johnson, 2003) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration Technique Geographic Information System Activity Date Usefulness...

  17. Geographic Information System At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Location Northern Basin and Range Geothermal Region Exploration Technique Geographic Information System Activity Date Usefulness useful regional reconnaissance DOE-funding Unknown...

  18. Tonopah Test Range Environmental Restoration Corrective Action Sites

    SciTech Connect (OSTI)

    NSTec Environmental Restoration

    2010-08-04

    This report describes the status (closed, closed in place, or closure in progress) of the Corrective Action Sites and Corrective Action Units at the Tonopah Test Range

  19. Thermal Gradient Holes At Northern Basin & Range Region (Pritchett...

    Open Energy Info (EERE)

    Thermal Gradient Holes At Northern Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes...

  20. Modeling-Computer Simulations At Nevada Test And Training Range...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  1. Aerial Photography At Nevada Test And Training Range Area (Sabin...

    Open Energy Info (EERE)

    Aerial Photography At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial...

  2. Geodetic Survey At Nevada Test And Training Range Area (Sabin...

    Open Energy Info (EERE)

    Geodetic Survey At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geodetic Survey At...

  3. Geographic Information System At Nevada Test And Training Range...

    Open Energy Info (EERE)

    Geographic Information System At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  4. Geothermometry At Nevada Test And Training Range Area (Sabin...

    Open Energy Info (EERE)

    Geothermometry At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At...

  5. LOW-HIGH VALUES FOR PETROLEUM AVERAGE INVENTORY RANGES (MILLION...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    ENERGY INFORMATION ADMINISTRATION LOW-HIGH VALUES FOR PETROLEUM AVERAGE INVENTORY RANGES (MILLION BARRELS) FILE UPDATED April 2004 Line Month Low High Number Product Name Geography...

  6. Hydrothermal Heat Discharge In The Cascade Range, Northwestern...

    Open Energy Info (EERE)

    United States Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States...

  7. Refraction Survey At Northern Basin & Range Region (Heimgartner...

    Open Energy Info (EERE)

    Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Refraction Survey At Northern Basin & Range Region (Heimgartner, Et Al., 2005)...

  8. Data Acquisition-Manipulation At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Data Acquisition-Manipulation At Northern Basin & Range Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data...

  9. Geographic Information System At Nw Basin & Range Region (Nash...

    Open Energy Info (EERE)

    Geographic Information System At Nw Basin & Range Region (Nash & Johnson, 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  10. Modeling-Computer Simulations At Nw Basin & Range Region (Pritchett...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Nw Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Modeling-Computer...

  11. Data Acquisition-Manipulation At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Data Acquisition-Manipulation At Nw Basin & Range Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data...

  12. Compound and Elemental Analysis At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Compound and Elemental Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and...

  13. Geographic Information System At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Geographic Information System At Nw Basin & Range Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  14. Geothermometry At Nw Basin & Range Region (Shevenell & De Rocher...

    Open Energy Info (EERE)

    Geothermometry At Nw Basin & Range Region (Shevenell & De Rocher, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Nw...

  15. Trace Element Analysis At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element...

  16. Modeling-Computer Simulations At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Nw Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Modeling-Computer...

  17. Geographic Information System At Nw Basin & Range Region (Blewitt...

    Open Energy Info (EERE)

    Geographic Information System At Nw Basin & Range Region (Blewitt, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  18. Data Acquisition-Manipulation At Northern Basin & Range Region...

    Open Energy Info (EERE)

    References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  19. Data Acquisition-Manipulation At Nw Basin & Range Region (Blackwell...

    Open Energy Info (EERE)

    References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  20. Verification Method for SSI Problems with Extended Parameter Ranges

    Broader source: Energy.gov [DOE]

    Verification Method for SSI Problems with Extended Parameter Ranges 2014 U.S. DOE Natural Phenomena Hazards Meeting Carl J. Costantino and Associates www.cjcassoc.com

  1. Structure, tectonics and stress field of the Coso Range, Inyo...

    Open Energy Info (EERE)

    Structure, tectonics and stress field of the Coso Range, Inyo County, California Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Structure,...

  2. Direct-Current Resistivity Survey At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Northern Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  3. Direct-Current Resistivity Survey At Nw Basin & Range Region...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Nw Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current...

  4. ORISE: Nuclear engineering degrees at highest ranges since 1980s

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

    ORISE report shows graduation, enrollment rates for nuclear engineering candidates are still at highest ranges reported since 1980s Report also shows shifts in career opportunities...

  5. Abraham Hot Springs Geothermal Area Northern Basin and Range...

    Open Energy Info (EERE)

    Basin and Range Geothermal Region Medical Hot Springs Geothermal Area Idaho Batholith Medicine Lake Geothermal Area Cascades Melozi Hot Springs Geothermal Area Alaska Geothermal...

  6. Two-Phase Westward Encroachment of Basin and Range Extension...

    Open Energy Info (EERE)

    Nevada Abstract 1 Structural, geophysical, and thermochronological data from the transition zone between the Sierra Nevada and the Basin and Range province at latitude 39N...

  7. Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  8. Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  9. Seismicity and seismic stress in the Coso Range, Coso geothermal...

    Open Energy Info (EERE)

    Seismicity and seismic stress in the Coso Range, Coso geothermal field, and Indian Wells Valley region, Southeast-Central California Jump to: navigation, search OpenEI Reference...

  10. Teleseismic-Seismic Monitoring At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Northern Basin & Range Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  11. Teleseismic-Seismic Monitoring At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Northern Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  12. Distributional properties of Euclidean distances in wireless networks involving road systems

    E-Print Network [OSTI]

    Schmidt, Volker

    1 Distributional properties of Euclidean distances in wireless networks involving road systems of large wireless networks. The network geometry is modelled by random geometric graphs, and the locations are closely related with the interference geometry and, consequently, the performance of wireless networks

  13. Fundamental Properties and Distances of LMC Eclipsing Binaries: III. EROS 1044

    E-Print Network [OSTI]

    Ignasi Ribas; Edward L. Fitzpatrick; Frank P. Maloney; Edward F. Guinan; Andrzej Udalski

    2002-04-03

    We present results from a detailed analysis of a third eclipsing binary (EB) system in the Large Magellanic Cloud, EROS 1044 (~B2 IV-V + ~B2 III-IV). Our study combines the "classical" EB study of light and radial velocity curves with detailed modeling of the observed spectral energy distribution, and yields an essentially complete picture of the stellar properties of the system and a determination of its distance. The observational data exploited include optical photometry, space-based UV spectroscopy, and UV/optical spectrophotometry. The advantages of our technique include numerous consistency checks and, in the case of the distance determinations, the absence of zero point uncertainties and adjustable parameters. We find the EROS 1044 system to consist of a pair of normal, mildly-evolved ~21000 K stars, whose derived properties are consistent with stellar evolution calculations. The distance to the system is 47.5+/-1.8 kpc. We discuss the implications of our results for three EB systems (HV 2274, HV 982, and EROS 1044) on the general distance to the Large Magellanic Cloud.

  14. Jump Flooding in GPU with Applications to Voronoi Diagram and Distance Transform Guodong Rong

    E-Print Network [OSTI]

    Tan, Tiow Seng

    Jump Flooding in GPU with Applications to Voronoi Diagram and Distance Transform Guodong Rong Tiow of the jump flooding algorithm is shown in the other six pictures, with the rightmost being the computed Voronoi diagram. Abstract This paper studies jump flooding as an algorithmic paradigm in the general

  15. Automated Locality Optimization Based on the Reuse Distance of String Operations

    E-Print Network [OSTI]

    Cortes, Corinna

    datacenter resources. String operations hurt processor cache efficiency when the data accessed is not reused datacenter applications. Index Terms--memcpy; nontemporal; reuse distance I. INTRODUCTION A. Background languages, including C, C++, Java or Python. In a function profile across all Google datacenter applications

  16. Bent functions at the minimal distance and algorithms of constructing linear codes for

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    1 Bent functions at the minimal distance and algorithms of constructing linear codes for CDMA 1 In this paper we study linear codes for CDMA (Code Division Multiple Access). This is the standard for the 3rd Generation cellular communications systems. In this standard bent functions are used for constructing codes

  17. Of Mice and Men: Algorithms for Evolutionary Distances Between Genomes with Translocation

    E-Print Network [OSTI]

    Ravi, R.

    Chapter 66 Of Mice and Men: Algorithms for Evolutionary Distances Between Genomes is combinatorial algorithms for genome rear- rangement. In the course of its evolution, the genome of an organism is to determine the minimum number of such events that transform one genome to another. This number is called

  18. The Exemplar Breakpoint Distance for Non-trivial Genomes Cannot Be Approximated

    E-Print Network [OSTI]

    Blin, Guillaume

    The Exemplar Breakpoint Distance for Non-trivial Genomes Cannot Be Approximated Guillaume Blin1 - France guillaume.fertin@univ-nantes.fr Abstract. A promising and active field of comparative genomics con- sists in comparing two genomes by establishing a one-to-one correspon- dence (i.e., a matching) between

  19. Standoff Spectroscopy Using a Conditioned Target Identifies Hazardous Materials at a Distance

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2012-09-26

    A safer method for the standoff (long distance) detection and identification ofmolecules on a surface has been invented by researchers at ORNL and the Universityof Tennessee. This invention avoids the necessity of close and potentially hazardouscontact. It combines tunable infrared (IR) and ultraviolet (UV) spectroscopy techniquesto target identifying properties of surface residues....

  20. A , birds are unique, in that many species regularly travel long distances at com-

    E-Print Network [OSTI]

    distances and taking advantage of the strong winds that are frequent in the Southern Ocean. Received 3 speeds, to take advantage of favorable conditions in widely separated areas. Recent developments suggests that albatrosses have the capacity to maintain positive energy budgets while quickly covering long

  1. A Master-Slave System to Acquire Biometric Imagery of Humans at Distance

    E-Print Network [OSTI]

    daily life. We can see surveillance cameras in banks, airports, stores and parking lots. Most commercial a parking lot, or building perimeter, to acquire identifiable imagery of all the people passing through is a master- slave, real-time surveillance system designed to acquire biometric imagery of humans at distance

  2. Copyright 2004 by the Genetics Society of America Bayesian Estimation of Genomic Distance

    E-Print Network [OSTI]

    Nielsen, Rasmus

    Copyright 2004 by the Genetics Society of America Bayesian Estimation of Genomic Distance Richard.organizations of two genomes is important for transferring information between species, for example, There are several). is that there is no guarantee that nature took the shortest Inferences concerning genome evolution have primar- path. Indeed, we

  3. Short-term irradiance variability: Preliminary estimation of station pair correlation as a function of distance

    E-Print Network [OSTI]

    Review Short-term irradiance variability: Preliminary estimation of station pair correlation the irradiance variability observed at two neighboring sites as a function of their distance of the considered time scale. 2012 Elsevier Ltd. All rights reserved. Keywords: Irradiance; Variability; High

  4. Study of spin sum rules (and the strong coupling constant at large distances)

    E-Print Network [OSTI]

    A. Deur

    2009-07-20

    We present recent results from Jefferson Lab on sum rules related to the spin structure of the nucleon. We then discuss how the Bjorken sum rule, with its connection to the Gerasimov-Drell-Hearn sum, allows us to conveniently define an effective coupling for the strong force at all distances.

  5. Top-N Query: Query Language, Distance Function and Processing Strategies

    E-Print Network [OSTI]

    Meng, Weiyi

    Top-N Query: Query Language, Distance Function and Processing Strategies Yuxi Chen, Weiyi Meng@cs.binghamton.edu Abstract. The top-N query problem is to find the N results that satisfy the query condition the best and products are sold on the Internet. This paper addresses three important issues related to the top-N query

  6. FIN 5550 Energy Finance Syllabus, Spring 2015-Distance 1 OSU SPEARS SCHOOL OF BUSINESS ADMINISTRATION

    E-Print Network [OSTI]

    , and Power by Daniel Yergin; The Quest: Energy, Security, and the Remaking of the Modern World by Daniel Description: In this energy finance course, students will study the current energy outlook, introductionFIN 5550 Energy Finance Syllabus, Spring 2015-Distance 1 OSU SPEARS SCHOOL OF BUSINESS

  7. Journal of Mammalogy, 84(1):197204, 2003 GROUP SIZE BUT NOT DISTANCE TO COVER INFLUENCES

    E-Print Network [OSTI]

    Grether, Gregory

    wallabies (Macropus agilis). The ability to modify time allocation as a function of group size allocated to foraging and vigilance as a function of group size but were insensitive to distance from cover to manage predation risk, the ability to modify time allocation as a function of group size (Bednekoff

  8. BBMB 404 XW Biochemistry I (distance learning) Summer 2013 Instructor: Mark Hargrove

    E-Print Network [OSTI]

    Mayfield, John

    BBMB 404 XW Biochemistry I (distance learning) Summer 2013 3 CREDITS Instructor: Mark Hargrove 4116 Molecular Biology Building Dept. of Biochemistry, Biophysics, and Molecular Biology Iowa State University on the text "Biochemistry", by Berg, Tymoczko, and Stryer, 7th Edition. Videotaped "live" lectures covering

  9. Universality for distances in power-law random graphs Remco van der Hofstad1,a

    E-Print Network [OSTI]

    Hofstad, Remco van der

    classical random graphs such as the ErdsRnyi random graph. It is often suggested that the behavior with similar degree sequences share similar behavior. We survey the available results on graph distances of the occupation status of the other ed

  10. Successful spread of a biocontrol agent reveals a biosecurity failure: elucidating long distance invasion pathways

    E-Print Network [OSTI]

    Hoddle, Mark S.

    Successful spread of a biocontrol agent reveals a biosecurity failure: elucidating long distance to successful invasion. In this study, the dispersal of a classical biological control agent, the mymarid egg. Survey results suggest that invasive orga- nisms, like deliberately released biological control agents

  11. in response to touch, oscillations in plants, and long-distance signal transmission in trees.

    E-Print Network [OSTI]

    in response to touch, oscillations in plants, and long- distance signal transmission in trees. Some chapter has a nice reference list to the primary literature. The larger question is: How useful in the neu- robiology paradigm to understanding plant physi- ology and plant biology in general? The editors and many

  12. Combination of Multiple Distance Measures for Protein Fold Classification Chendra Hadi Suryanto, Hideitsu Hino, Kazuhiro Fukui

    E-Print Network [OSTI]

    Fukui, Kazuhiro

    Combination of Multiple Distance Measures for Protein Fold Classification Chendra Hadi Suryanto. In this paper, we propose a new approach to protein fold classification, by introducing the concept of large demonstrate the effectiveness of the proposed method by classifying 27 fold classes of proteins in the Ding

  13. College of Human Sciences FY2014 Research Abstracts Great Plains Interactive Distance Education Alliance

    E-Print Network [OSTI]

    Alliance Oklahoma State University is a member institution in the Great Plains Interactive Distance Education Alliance, a partnership of 20 public university members providing access to educational and maintenance of the alliance. Alliance membership is a selective process that engages institutional leadership

  14. An Adaptive, High Performance MAC for Long-Distance Multihop Wireless

    E-Print Network [OSTI]

    Karp, Brad

    -distance networks (WiLD) provides connectivity to rural areas low cost #12;Background 802.11 uses CSMA-based MAC is lower than the others at low utilization (100 input... Key innovation in JazzyMAC is to use dynamic timeslot adaptation which gives advantages over fixed

  15. Localized Distance-sensitive Service Discovery in Wireless Sensor and Actor Networks

    E-Print Network [OSTI]

    Santoro, Nicola

    1 Localized Distance-sensitive Service Discovery in Wireless Sensor and Actor Networks Xu Li discovery problem in wireless sensor and actor networks, and propose a novel localized algorithm, i, Wireless networks 3 1 INTRODUCTION AWireless sensor network is a collection of micro- sized and resource

  16. LES TIC, TECHNOLOGIES DE GESTION DU TEMPS ET DE LA DISTANCE

    E-Print Network [OSTI]

    van Tiggelen, Bart

    LES TIC, TECHNOLOGIES DE GESTION DU TEMPS ET DE LA DISTANCE Grard Valenduc Professeur UNamur et la problmatique "impacts socitaux des TIC" 2 Le rapport au temps et la gestion du temps 3 Le centres d'intrt "TIC et ..." L'emploi (ds les annes 1980) Inquitude concernant le processus de

  17. Stellar metallicity of the extended disk and distance of the spiral galaxy NGC 3621

    SciTech Connect (OSTI)

    Kudritzki, Rolf-Peter; Bresolin, Fabio; Hosek, Matthew W. Jr.; Urbaneja, Miguel A.; Przybilla, Norbert E-mail: bresolin@ifa.hawaii.edu E-mail: Miguel.Urbaneja-Perez@uibk.ac.at

    2014-06-10

    Low resolution (?4.5 ) ESO VLT/FORS spectra of blue supergiant stars are analyzed to determine stellar metallicities (based on elements such as iron, titanium, and magnesium) in the extended disk of the spiral galaxy, NGC 3621. Mildly subsolar metallicity (0.30 dex) is found for the outer objects beyond 7 kpc, independent of galactocentric radius and compatible with the absence of a metallicity gradient, confirming the results of a recent investigation of interstellar medium H II region gas oxygen abundances. The stellar metallicities are slightly higher than those from the H II regions when based on measurements of the weak forbidden auroral oxygen line at 4363 but lower than the ones obtained with the R {sub 23} strong line method. It is shown that the present level of metallicity in the extended disk cannot be the result of chemical evolution over the age of the disk with the present rate of in situ star formation. Additional mechanisms must be involved. In addition to metallicity, stellar effective temperatures, gravities, interstellar reddening, and bolometric magnitudes are determined. After the application of individual reddening corrections for each target, the flux-weighted gravity-luminosity relationship of blue supergiant stars is used to obtain a distance modulus of 29.07 0.09 mag (distance D = 6.52 0.28 Mpc). This new distance is discussed in relation to Cepheid and the tip of the red giant branch distances.

  18. The Role of Network Distance in LinkedIn People Search Shih-Wen Huang

    E-Print Network [OSTI]

    Karahalios, Karrie G.

    The Role of Network Distance in LinkedIn People Search Shih-Wen Huang Computer Science of the primary activities on the site is people search, for which LinkedIn members are both the users and the corpus. This paper presents insights about people search behavior on LinkedIn, based on a log analysis

  19. 3-D Photoionization Structure and Distances of Planetary Nebulae III. NGC 6781

    E-Print Network [OSTI]

    Hugo E. Schwarz; Hektor Monteiro

    2006-04-24

    Continuing our series of papers on the three-dimensional (3-D) structures of and accurate distances to Planetary Nebulae (PNe), we present our study of the planetary nebula NGC6781. For this object we construct a 3-D photoionization model and, using the constraints provided by observational data from the literature we determine the detailed 3-D structure of the nebula, the physical parameters of the ionizing source and the first precise distance. The procedure consists in simultaneously fitting all the observed emission line morphologies, integrated intensities and the 2-D density map from the [SII] line ratios to the parameters generated by the model, and in an iterative way obtain the best fit for the central star parameters and the distance to NGC6781, obtaining values of 950+-143pc and 385 Lsun for the distance and luminosity of the central star respectively. Using theoretical evolutionary tracks of intermediate and low mass stars, we derive the mass of the central star of NGC6781 and its progenitor to be 0.60+-0.03 Msun and 1.5+-0.5 Msun respectively.

  20. UNCORRECTED 2 Kernel-based distance metric learning for content-based image retrieval

    E-Print Network [OSTI]

    Yeung, Dit-Yan

    UNCORRECTED PROOF 1 2 Kernel-based distance metric learning for content-based image retrieval 3 and Technology, Clear Water Bay, Kowloon, Hong Kong 5 Received 24 August 2005; received in revised form 16 images, the performance of a content-based image retrieval (CBIR) system 9 depends critically

  1. Distance Measures for Gabor Jets-Based Face Authentication: A Comparative Evaluation

    E-Print Network [OSTI]

    Bicego, Manuele

    Distance Measures for Gabor Jets-Based Face Authentication: A Comparative Evaluation Daniel Gonz (Italy) tista@uniss.it Abstract. Local Gabor features (jets) have been widely used in face recognition systems. Once the sets of jets have been extracted from the two faces to be compared, a proper measure

  2. Distance Dependence of Electron Transfer in DNA: The Role of the Reorganization Energy and Free Energy

    E-Print Network [OSTI]

    Fayer, Michael D.

    Distance Dependence of Electron Transfer in DNA: The Role of the Reorganization Energy and Free of the solvent reorganization energy and free energy in the heterogeneous DNA environment. DNA is modeled represents water. Model calculations show the importance of including the reorganization energy and the free

  3. Reducing the Plagiarism Detection Search Space on the Basis of the Kullback-Leibler Distance

    E-Print Network [OSTI]

    Rosso, Paolo

    Reducing the Plagiarism Detection Search Space on the Basis of the Kullback-Leibler Distance, jbenedi}@dsic.upv.es http://www.dsic.upv.es/grupos/nle/ Abstract. Automatic plagiarism detection the plagiarised fragments to their potential source. Publications on this task often assume that the search space

  4. The Exemplar Breakpoint Distance for non-trivial genomes cannot be approximated

    E-Print Network [OSTI]

    Fertin, Guillaume

    The Exemplar Breakpoint Distance for non-trivial genomes cannot be approximated Guillaume Blin1 - France guillaume.fertin@univ-nantes.fr Abstract. A promising and active field of comparative genomics con- sists in comparing two genomes by establishing a one-to-one correspon- dence (i.e., a matching) between

  5. Approximating the True Evolutionary Distance Between Two Genomes Krister M. Swenson

    E-Print Network [OSTI]

    Moret, Bernard

    Approximating the True Evolutionary Distance Between Two Genomes Krister M. Swenson Mark Marron Joel V. Earnest-DeYoung Bernard M.E. Moret Abstract As more and more genomes are sequenced, evolutionary bi- ologists are becoming increasingly interested in evolution at the level of whole genomes

  6. Scaffold Filling Under the Breakpoint Distance Haitao Jiang1,2

    E-Print Network [OSTI]

    Zhu, Binhai

    of genome sequencing without completing the sequence of the whole genomes, Mu~noz et al. recently studied the problem of filling an incomplete multichromosomal genome (or scaffold) I with respect to a complete target genome G such that the resulting genomic distance between I and G is minimized, where I

  7. Impinging laminar jets at moderate Reynolds numbers and separation distances Jeffrey M. Bergthorson,

    E-Print Network [OSTI]

    Impinging laminar jets at moderate Reynolds numbers and separation distances Jeffrey M. Bergthorson an experimental and numerical study of impinging, incompressible, axisym- metric, laminar jets, where the jet axis velocities along the centerline of the flow field. The jet-nozzle pressure drop is measured simultaneously

  8. The simplest method to measure the geocentric lunar distance: a case of citizen science

    E-Print Network [OSTI]

    Zuluaga, Jorge I; Ferrin, Ignacio

    2014-01-01

    We present the results of measuring the geocentric lunar distance using what we propose is the simplest method to achieve a precise result. Although lunar distance has been systematically measured to a precision of few millimeters using powerful lasers and retroreflectors installed on the moon by the Apollo missions, the method devised and applied here can be readily used by nonscientist citizens (e.g. amateur astronomers or students) and it requires only a good digital camera. After launching a citizen science project called the Aristarchus Campaign, intended to involve astronomy enthusiasts in scientific measurement of the Lunar Eclipse of 15 April 2014, we compiled and measured a series of pictures obtained by one of us (J.C. Figueroa). These measurements allowed us to estimate the lunar distance to a precision of 3%. We describe here how to perform the measurements and the method to calculate from them the geocentric lunar distance using only the pictures time stamps and a precise measurement of the insta...

  9. DistancePPG: Robust non-contact vital signs monitoring using a camera

    E-Print Network [OSTI]

    DistancePPG: Robust non-contact vital signs monitoring using a camera Mayank Kumar, Ashok@rice.edu Abstract: Vital signs such as pulse rate and breathing rate are currently measured using contact probes. But, non-contact methods for measuring vital signs are desirable both in hospital settings

  10. Compact Laser Scanning Distance Sensor with a Two-axis Gimbaled Microscanner for Volumetric Imaging

    E-Print Network [OSTI]

    Park, Namkyoo

    Compact Laser Scanning Distance Sensor with a Two-axis Gimbaled Microscanner for Volumetric Imaging@plaza.snu.ac.kr, daesung@stanford.edu, solgaard@stanford.edu Abstract: We report on a laser scanning volumetric image sensors [2], and triangulation sensors [3]. In this work, we propose a compact TOF volumetric imaging

  11. Temporal Trends in Migration in the land Islands: Effects of Population Size and Geographic Distance

    E-Print Network [OSTI]

    Mielke, James H.; Relethford, John H.; Eriksson, Aldur W.

    1994-06-01

    Using a model developed by Relethford (1992), we assess temporal trends (1750-1949) in marital migration in the Aland Islands, Finland, in relation to both geographic distance and population size. The 200-year time period was divided into four 50...

  12. Noise in 3D Laser Range Scanner Data Xianfang Sun

    E-Print Network [OSTI]

    Martin, Ralph R.

    Noise in 3D Laser Range Scanner Data Xianfang Sun Cardiff University, UK Beihang University, China University, UK Abstract This paper discusses noise in range data measured by a Konica Mi- nolta Vivid 910 Gaussian noise, which is independently distributed at each mesh point. Measure- ments of an accurately

  13. Range Sustainability (VSP) PNWD-SA-7032 9

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 9 PNWD-SA-7032 / 9 What are the Steps in Using the VSP Sustainability (VSP) PNWD-SA-7032 10 PNWD-SA-7032 / 10 Hypotheses Being TestedHypotheses Being Tested is false., i.e., on showing that the segment does not need to be bumped out. #12;Range Sustainability (VSP

  14. Range Sustainability (VSP) PNWD-SA-7032 49

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 49 PNWD-SA-7032 / 49 Hypothetical Case Study (Continued Sustainability (VSP) PNWD-SA-7032 50 PNWD-SA-7032 / 50 Hypothetical Case Study (Continued)Hypothetical Case Study Save #12;Range Sustainability (VSP) PNWD-SA-7032 51 PNWD-SA-7032 / 51 Coordinate View X and Y

  15. Range Sustainability (VSP) PNWD-SA-7032 33

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 33 PNWD-SA-7032 / 33 Map View Sample Information Box Click in this Column #12;Range Sustainability (VSP) PNWD-SA-7032 34 PNWD-SA-7032 / 34 Sample Information Box Sustainability (VSP) PNWD-SA-7032 35 PNWD-SA-7032 / 35 Segment Sample Results Box Enter Measurements

  16. Optimum Transmission Range for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Deng, Jing

    Optimum Transmission Range for Wireless Ad Hoc Networks Jing Deng Dept. of EECS Syracuse Univ-- The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied under homogeneous node distribution. By as- suming the knowledge of node location, we first proposed a transmission

  17. Project Report Evaluation of TDWR Range-Velocity

    E-Print Network [OSTI]

    Cho, John Y. N.

    Project Report ATC-310 Evaluation of TDWR Range-Velocity Ambiguity Mitigation Techniques J. Y. N the degree of mitigation offered by existing phase diversity methods to these problems. Using optimized-OOGOOO2. 16. Abstract Range and velocity ambiguities pose significant data quality challenges

  18. Microwave frequency measurement with improved measurement range and

    E-Print Network [OSTI]

    Yao, Jianping

    Microwave frequency measurement with improved measurement range and resolution X. Zou and J. Yao An approach is proposed and demonstrated to improve the measure- ment range and resolution of a microwave frequency measurement system. Two optical wavelengths are modulated by a microwave signal in a Mach

  19. Toward the Long-range Prediction of Severe Convective Windstorms

    E-Print Network [OSTI]

    Kuligowski, Bob

    Toward the Long-range Prediction of Severe Convective Windstorms Ken Pryor Department review pertaining to severe convective windstorm (SCW) structure and evolution. Identify potential for the development of a long-range SCW prediction technique. #12;Background Severe windstorms resulting from large

  20. Efficient wireless non-radiative mid-range energy transfer

    E-Print Network [OSTI]

    Efficient wireless non-radiative mid-range energy transfer Aristeidis Karalis a,*, J.D. Joannopoulos b , Marin Soljacic b a Department of Electrical Engineering and Computer Science, Massachusetts-range wireless energy transfer. 2007 Elsevier Inc. All rights reserved. Keywords: Wireless energy; Wireless

  1. Range Cattle Research & Education Center FIELD DAYOctober 1, 2013

    E-Print Network [OSTI]

    Ma, Lena

    Range Cattle Research & Education Center FIELD DAYOctober 1, 2013 Forage and Cattle #12;RCREC Field and Center Director, Range Cattle Research and Education Center 10:15 AM Opening Remarks Henry Kempfer, Kempfer Cattle Company and PresidentElect, Florida Cattlemen's Association 10:30 AM Cogongrass

  2. Energy Distribution Control in Wireless Sensor Networks Through Range Optimization

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    Energy Distribution Control in Wireless Sensor Networks Through Range Optimization M.Sarper Gokturk--A major objective in wireless sensor networks is to find optimum routing strategies for energy efficient a location-based routing framework to control the energy distribution in a network where transmission ranges

  3. Research Article Application of Short-Range LIDAR in

    E-Print Network [OSTI]

    Tang, Wenbo

    a series of meteorological instruments, including long-range LIDAR (light detection and ranging) systems Island of complex terrain to the south. The Lantau Island is composed of rows of northeast- southwest are brought about by strong winds across the Lantau Island to the south of the airport, including the strong

  4. Mode coherence at megameter ranges in the North Pacific Ocean

    E-Print Network [OSTI]

    Wage, Kathleen

    Mode coherence at megameter ranges in the North Pacific Ocean Kathleen E. Wage, Matthew A and the Acoustical Society of America. #12;Mode coherence at megameter ranges in the North Pacific Ocean Kathleen E Thermometry of Ocean Climate ATOC and Alternate Source Test AST experiments. Vertical line arrays at Hawaii

  5. Renewable Energy and the Nevada Test and Training Range

    E-Print Network [OSTI]

    Lewis, Robert Michael

    1 Renewable Energy and the Nevada Test and Training Range Wednesday, December 15, 2010 Melissa due to renewable energy infrastructure development at the Nevada Test and Training Range. Nevada has have ever-increasing renewable energy goals. However, proposals for the development of 116 renewable

  6. Laser Ranging for Gravitational, Lunar, and Planetary Science

    E-Print Network [OSTI]

    Stephen M. Merkowitz; Philip W. Dabney; Jeffrey C. Livas; Jan F. McGarry; Gregory A. Neumann; Thomas W. Zagwodzki

    2007-12-20

    More precise lunar and Martian ranging will enable unprecedented tests of Einstein's theory of General Relativity and well as lunar and planetary science. NASA is currently planning several missions to return to the Moon, and it is natural to consider if precision laser ranging instruments should be included. New advanced retroreflector arrays at carefully chosen landing sites would have an immediate positive impact on lunar and gravitational studies. Laser transponders are currently being developed that may offer an advantage over passive ranging, and could be adapted for use on Mars and other distant objects. Precision ranging capability can also be combined with optical communications for an extremely versatile instrument. In this paper we discuss the science that can be gained by improved lunar and Martian ranging along with several technologies that can be used for this purpose.

  7. Rocky Flats Plant Live-Fire Range Risk Analysis Report

    SciTech Connect (OSTI)

    Nicolosi, S.L.; Rodriguez, M.A.

    1994-04-01

    The objective of the Live-Fire Range Risk Analysis Report (RAR) is to provide an authorization basis for operation as required by DOE 5480.16. The existing Live-Fire Range does not have a safety analysis-related authorization basis. EG&G Rocky Flats, Inc. has worked with DOE and its representatives to develop a format and content description for development of an RAR for the Live-Fire Range. Development of the RAR is closely aligned with development of the design for a baffle system to control risks from errant projectiles. DOE 5480.16 requires either an RAR or a safety analysis report (SAR) for live-fire ranges. An RAR rather than a SAR was selected in order to gain flexibility to more closely address the safety analysis and conduct of operation needs for a live-fire range in a cost-effective manner.

  8. 16 March 2009 John Learned @ NNS Mtg HAwaii 1 New Ideas in Long RangeNew Ideas in Long Range

    E-Print Network [OSTI]

    Learned, John

    16 March 2009 John Learned @ NNS Mtg HAwaii 1 New Ideas in Long RangeNew Ideas in Long Range. of Physics and Astronomy University of Hawaii #12;16 March 2009 John Learned @ NNS Mtg HAwaii 2 Introduction large detectors. Best if done far from other reactors. #12;16 March 2009 John Learned @ NNS Mtg HAwaii

  9. Structure, Stability, and Formation Pathways of Colloidal Gels in Systems with Short-Range Attraction and Long-Range Repulsion

    E-Print Network [OSTI]

    Leunissen, Mirjam

    Structure, Stability, and Formation Pathways of Colloidal Gels in Systems with Short formed upon centrifugation of dilute suspensions of spherical colloids (radius 446 nm) that interact in concentrated suspensions of colloids with long-ranged repulsion and short-ranged attraction15 being a clear

  10. First Determination of the Distance and Fundamental Properties of an Eclipsing Binary in The Andromeda Galaxy

    E-Print Network [OSTI]

    Ignasi Ribas; Carme Jordi; Francesc Vilardell; Edward L. Fitzpatrick; Ron W. Hilditch; Edward F. Guinan

    2005-11-01

    We present the first detailed spectroscopic and photometric analysis of an eclipsing binary in the Andromeda Galaxy (M31). This is a 19.3-mag semi-detached system with components of late-O and early-B spectral types. From the light and radial velocity curves we have carried out an accurate determination of the masses and radii of the components. Their effective temperatures have been estimated from the modeling of the absorption line spectra. The analysis yields an essentially complete picture of the properties of the system, and hence an accurate distance determination to M31. The result is d=772+/-44 kpc ((m-M)_0=24.44+/-0.12 mag). The study of additional systems, currently in progress, should reduce the uncertainty in the M31 distance to better than 5%.

  11. Bipartite Q-polynomial distance-regular graphs and uniform posets

    E-Print Network [OSTI]

    Miklavic, Stefko

    2011-01-01

    Let $\\G$ denote a bipartite distance-regular graph with vertex set $X$ and diameter $D \\ge 3$. Fix $x \\in X$ and let $L$ (resp. $R$) denote the corresponding lowering (resp. raising) matrix. We show that each $Q$-polynomial structure for $\\G$ yields a certain linear dependency among $RL^2$, $LRL$, $L^2R$, $L$. Define a partial order $\\le$ on $X$ as follows. For $y,z \\in X$ let $y \\le z$ whenever $\\partial(x,y)+\\partial(y,z)=\\partial(x,z)$, where $\\partial$ denotes path-length distance. We determine whether the above linear dependency gives this poset a uniform or strongly uniform structure. We show that except for one special case a uniform structure is attained, and except for three special cases a strongly uniform structure is attained.

  12. Testing long-distance modifications of gravity to 100 astronomical units

    E-Print Network [OSTI]

    Brandon Buscaino; Daniel DeBra; Peter W. Graham; Giorgio Gratta; Timothy D. Wiser

    2015-09-09

    There are very few direct experimental tests of the inverse square law of gravity at distances comparable to the scale of the Solar System and beyond. Here we describe a possible space mission optimized to test the inverse square law at a scale of up to 100 AU. For example, sensitivity to a Yukawa correction with a strength of $10^{-7}$ times gravity and length scale of 100 AU is within reach, improving the current state of the art by over two orders of magnitude. This experiment would extend our understanding of gravity to the largest scale that can be reached with a direct probe using known technology. This would provide a powerful test of long-distance modifications of gravity including many theories motivated by dark matter or dark energy.

  13. Testing long-distance modifications of gravity to 100 astronomical units

    E-Print Network [OSTI]

    Buscaino, Brandon; Graham, Peter W; Gratta, Giorgio; Wiser, Timothy D

    2015-01-01

    There are very few direct experimental tests of the inverse square law of gravity at distances comparable to the scale of the Solar System and beyond. Here we describe a possible space mission optimized to test the inverse square law at a scale of up to 100 AU. For example, sensitivity to a Yukawa correction with a strength of $10^{-7}$ times gravity and length scale of 100 AU is within reach, improving the current state of the art by over two orders of magnitude. This experiment would extend our understanding of gravity to the largest scale that can be reached with a direct probe using known technology. This would provide a powerful test of long-distance modifications of gravity including many theories motivated by dark matter or dark energy.

  14. High efficient wireless power transfer devices transcend the distance constraint: methodology inspired from transformation optics

    E-Print Network [OSTI]

    Zhu, Lin; Ma, Hongru

    2015-01-01

    We introduce a methodology to design high efficient wireless power transfer(WPT) devices inspired by transformation optics theory, and calculate its transmission power and efficiency by the scattering theory for electromagnetic (EM) wave. Using the series expansion methods, we demonstrate the WPT devices' transmission efficiency can be significantly improved by covered with super scatterer. The comparison with those results obtained by COMSOL shows the series expansion method is effective and expected to deal with long-distance transfer problem. We present some examples to exam our methodology, and showed how WPT devices' efficiency is significantly improved as our expectation. The transfer distances of such WPT devices are several meters and can be widely extended by regulating its parameters.

  15. Corridor One: An Integrated Distance Visualization Environment for SSI and ASCI Applications

    SciTech Connect (OSTI)

    Rick Stevens; Jason Leigh

    2002-07-14

    Scenarios describe realistic uses of DVC/Distance technologies in several years. Four scenarios are described: Distributed Decision Making; Remote Interactive Computing; Remote Visualization: (a) Remote Immersive Visualization and (b) Remote Scientific Visualization; Remote Virtual Prototyping. Scenarios serve as drivers for the road maps and enable us to check that the functionality and technology in the road maps match application needs. There are four major DVC/Distance technology areas we cover: Networking and QoS; Remote Computing; Remote Visualization; Remote Data. Each ??road map? consists of two parts, a ??functionality? matrix (what can be done) and a ??technology? matrix (underlying technology). That is, functionality matrices show the desired operational characteristics, while technology matrices show the underlying technology needed. In practice, there isn??t always a clean break between ??functionality? and ??technology,? but it still seems useful to try and separate things this way.

  16. Formulas & definitions to know Formulas & definitions that will be provided if Distance formula in 3 dimensions compab = ab

    E-Print Network [OSTI]

    Lozano-Robledo, Alvaro

    Formulas & definitions to know Formulas & definitions that will be provided if needed Distance formula in 3 dimensions compab = a·b |a| Equation of a sphere W = F · D (work, force, distance) Vector of differentiability for a function of two variables arc length formula, arc length function the graph of a function

  17. The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Fast 3D Distance Field Computation

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Fast 3D Distance Field Computation using Graphics Hardware Avneesh Sud, Miguel A. Otaduy and Dinesh Manocha University of North Carolina at Chapel Hill http://gamma.cs.unc.edu/DiFi #12;The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL Distance Field

  18. Clustering of categorical data: a comparison of a model-based and a distance-based approach

    E-Print Network [OSTI]

    Hennig, Christian

    Clustering of categorical data: a comparison of a model-based and a distance-based approach Laura categorical data, a latent class model-based approach (LCC) with local independence is compared was evaluated by both a model-based as well as a distance-based criterion. LCC was better according to the model-based

  19. Version: 2009 January 15 The distance to a star forming region in the Outer arm of the

    E-Print Network [OSTI]

    Brunthaler, Andreas

    Version: 2009 January 15 The distance to a star forming region in the Outer arm of the Galaxy K performed astrometric observations with the VLBA of WB89-437, an H2O maser source in the Outer spiral arm is considerably smaller than the kinematic distance of 8.6 kpc. This confirms the presence of a faint Outer arm

  20. Absolute distance perception during in-depth head movement: calibrating optic flow with extra-retinal information

    E-Print Network [OSTI]

    Fah, Cheong Loong

    Absolute distance perception during in-depth head movement: calibrating optic flow with extra-retinal Processing and Application Laboratory (IPAL-CNRS), KDRL, 21 Heng Mui Keng Terrace, Singapore 119613 d reserved. Keywords: Self-motion; Object-motion; Absolute distance perception; Optic flow; Extra-retinal cue

  1. Optical fiber configurations for transmission of laser energy over great distances

    DOE Patents [OSTI]

    Rinzler, Charles C; Zediker, Mark S

    2014-11-04

    There are provided optical fiber configurations that provide for the delivery of laser energy, and in particular, the transmission and delivery of high power laser energy over great distances. These configurations further are hardened to protect the optical fibers from the stresses and conditions of an intended application. The configurations provide means for determining the additional fiber length (AFL) need to obtain the benefits of such additional fiber, while avoiding bending losses.

  2. Optical fiber configurations for transmission of laser energy over great distances

    DOE Patents [OSTI]

    Rinzler, Charles C; Zediker, Mark S

    2013-10-29

    There are provided optical fiber configurations that provide for the delivery of laser energy, and in particular, the transmission and delivery of high power laser energy over great distances. These configurations further are hardened to protect the optical fibers from the stresses and conditions of an intended application. The configurations provide means for determining the additional fiber length (AFL) need to obtain the benefits of such additional fiber, while avoiding bending losses.

  3. "Handicapped by distance and transportation": Indigenous Relocation, Modernity and Time-Space Expansion

    E-Print Network [OSTI]

    Raibmon, Paige

    2006-03-01

    relocation program in order to orchestrate the removal of the community from Yuquot. The nature of bureaucracy itself situated officials as cogs in a larger machine, free from the "Handicapped by distance and transportation" 373 "irrational" elements... areas for children, wind blown particulates from wood chip piles, and air emissions of sulpher dioxide, hydrogen sulphide and mercaptans. Mucahalet Inlet is contaminated with diox- ins and furans.98 Even so, it was clear that Indian Affairs...

  4. At What Distance Can the Human Eye Detect a Candle Flame?

    E-Print Network [OSTI]

    Krisciunas, Kevin

    2015-01-01

    Using CCD observations of a candle flame situated at a distance of 338 m and calibrated with observations of Vega, we show that a candle flame situated at ~2.6 km (1.6 miles) is comparable in brightness to a 6th magnitude star with the spectral energy distribution of Vega. The human eye cannot detect a candle flame at 10 miles or further, as some statements on the web suggest.

  5. Tonopah Test Range Summary of Corrective Action Units

    SciTech Connect (OSTI)

    Ronald B. Jackson

    2007-05-01

    Corrective Action Sites (CASs) and Corrective Action Units (CAUs) at the Tonopah Test Range (TTR) may be placed into three categories: Clean Closure/No Further Action, Closure in Place, or Closure in Progress.

  6. Digital Dynamic Range Compressor Design--A Tutorial and Analysis

    E-Print Network [OSTI]

    Reiss, Josh

    PAPERS Digital Dynamic Range Compressor Design-- A Tutorial and Analysis DIMITRIOS GIANNOULIS formal knowledge and analysis of compressor design techniques. In this tutorial we describe several become audio engineers' favorites for certain types of signal. The analysis of compressor designs

  7. Evolution of Extensional Basins and Basin and Range Topography...

    Open Energy Info (EERE)

    movements on an array of strike-slip and normal fault systems have resulted in the uplift and preservation of older basins in modern ranges. One of the best exposed of these is...

  8. Rangeland Drought Management for Texans: Toxic Range Plants

    E-Print Network [OSTI]

    Hart, Charles R.; Carpenter, Bruce B.

    2001-05-03

    Toxic plants can pose a major threat to livestock during a drought. This publication explains the importance of knowing which plants are toxic, keeping the range healthy, and preventing toxic plant problems....

  9. The Compact RCS / Antenna Range at MIT Lincoln Laboratory

    E-Print Network [OSTI]

    Shields, Michael W.

    A new compact range with a state-of-the-art instrumentation system was installed at Lincoln Laboratory and is currently in use. This paper describes the chamber with varied-height absorber, the rolled-edge reflector and ...

  10. Cenozoic volcanic geology of the Basin and Range province in...

    Open Energy Info (EERE)

    Cenozoic volcanic geology of the Basin and Range province in Hidalgo County, southwestern New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  11. Reconciliation of local and long range tilt correlations in underdoped...

    Office of Scientific and Technical Information (OSTI)

    powder diffraction and inelastic neutron scattering (INS) approaches. Long-range and static CuO tilt order with orthogonally inequivalent Cu-O bonds in the CuO planes in...

  12. A New Algorithm for Learning Range Restricted Horn Expressions

    E-Print Network [OSTI]

    Arias, Marta; Khardon, Roni

    A learning algorithm for the class of range restricted Horn expressions is presented and proved correct. The algorithm works within the framework of learning from entailment, where the goal is to exactly identify some ...

  13. Modeling-Computer Simulations At Nw Basin & Range Region (Blackwell...

    Open Energy Info (EERE)

    systems References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  14. Modeling-Computer Simulations At Northern Basin & Range Region...

    Open Energy Info (EERE)

    systems References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  15. Climate Action Plans and Long-Range Transportation

    E-Print Network [OSTI]

    Bertini, Robert L.

    Climate Action Plans and Long-Range Transportation Plans in the Pacific Northwest: A Review Climate Change and Impacts Mitigation versus Adaptation Impacts of Climate Change: Nation & the Pacific Northwest Climate Change Planning Efforts Transportation Sector Response - Survey Recommendations Continued

  16. Long-distance entanglement and quantum teleportation in XX spin chains

    SciTech Connect (OSTI)

    Campos Venuti, L.; Giampaolo, S. M.; Illuminati, F.; Zanardi, P.

    2007-11-15

    Isotropic XX models of one-dimensional spin-1/2 chains are investigated with the aim to elucidate the formal structure and the physical properties that allow these systems to act as channels for long-distance, high-fidelity quantum teleportation. We introduce two types of models: (i) open, dimerized XX chains, and (ii) open XX chains with small end bonds. For both models we obtain the exact expressions for the end-to-end correlations and the scaling of the energy gap with the length of the chain. We determine the end-to-end concurrence and show that model (i) supports true long-distance entanglement at zero temperature, while model (ii) supports 'quasi-long-distance' entanglement that slowly falls off with the size of the chain. Due to the different scalings of the gaps, respectively exponential for model (i) and algebraic in model (ii), we demonstrate that the latter allows for efficient qubit teleportation with high fidelity in sufficiently long chains even at moderately low temperatures.

  17. Moving Large Data Sets Over High-Performance Long Distance Networks

    SciTech Connect (OSTI)

    Hodson, Stephen W [ORNL; Poole, Stephen W [ORNL; Ruwart, Thomas [ORNL; Settlemyer, Bradley W [ORNL

    2011-04-01

    In this project we look at the performance characteristics of three tools used to move large data sets over dedicated long distance networking infrastructure. Although performance studies of wide area networks have been a frequent topic of interest, performance analyses have tended to focus on network latency characteristics and peak throughput using network traffic generators. In this study we instead perform an end-to-end long distance networking analysis that includes reading large data sets from a source file system and committing large data sets to a destination file system. An evaluation of end-to-end data movement is also an evaluation of the system configurations employed and the tools used to move the data. For this paper, we have built several storage platforms and connected them with a high performance long distance network configuration. We use these systems to analyze the capabilities of three data movement tools: BBcp, GridFTP, and XDD. Our studies demonstrate that existing data movement tools do not provide efficient performance levels or exercise the storage devices in their highest performance modes. We describe the device information required to achieve high levels of I/O performance and discuss how this data is applicable in use cases beyond data movement performance.

  18. A NEW COSMOLOGICAL DISTANCE MEASURE USING ACTIVE GALACTIC NUCLEUS X-RAY VARIABILITY

    SciTech Connect (OSTI)

    Franca, Fabio La; Bianchi, Stefano; Branchini, Enzo; Matt, Giorgio [Dipartimento di Matematica e Fisica, Universit Roma Tre, Via della Vasca Navale 84, I-00146, Roma (Italy); Ponti, Gabriele, E-mail: lafranca@fis.uniroma3.it [Max-Planck-Institut fr Extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching bei Mnchen (Germany)

    2014-05-20

    We report the discovery of a luminosity distance estimator using active galactic nuclei (AGNs). We combine the correlation between the X-ray variability amplitude and the black hole (BH) mass with the single-epoch spectra BH mass estimates which depend on the AGN luminosity and the line width emitted by the broad-line region. We demonstrate that significant correlations do exist that allow one to predict the AGN (optical or X-ray) luminosity as a function of the AGN X-ray variability and either the H? or the Pa? line widths. In the best case, when the Pa? is used, the relationship has an intrinsic dispersion of ?0.6dex. Although intrinsically more disperse than supernovae Ia, this relation constitutes an alternative distance indicator potentially able to probe, in an independent way, the expansion history of the universe. With respect to this, we show that the new mission concept Athena should be able to measure the X-ray variability of hundreds of AGNs and then constrain the distance modulus with uncertainties of 0.1mag up to z ? 0.6. We also discuss how our estimator has the prospect of becoming a cosmological probe even more sensitive than the current supernovae Ia samples by using a new dedicated wide-field X-ray telescope able to measure the variability of thousands of AGNs.

  19. The Megamaser Cosmology Project VIII. A Geometric Distance to NGC 5765b

    E-Print Network [OSTI]

    Gao, F; Reid, M J; Lo, K Y; Condon, J J; Henkel, C; Kuo, C Y; Impellizzeri, C M V; Pesce, D W; Zhao, W

    2015-01-01

    As part of the Megamaser Cosmology Project (MCP), here we present a new geometric distance measurement to the megamaser galaxy NGC 5765b. Through a series of VLBI observations, we have confirmed the water masers trace a thin, sub-parsec Keplerian disk around the nucleus, implying an enclosed mass of 4.55 $\\pm$ 0.40 $\\times~10^{7}M_\\odot$. Meanwhile, from single dish monitoring of the maser spectra over two years, we measured the secular drifts of maser features near the systemic velocity of the galaxy with rates between 0.5 and 1.2 km s$^{-1}$ yr$^{-1}$. Fitting a warped, thin disk model to these measurements, we determine a Hubble Constant $H_{0}$ of 66.0 $\\pm$ 6.0 km s$^{-1}$ Mpc$^{-1}$ with the angular-diameter distance to NGC 5765b of 126.3 $\\pm$ 11.6 Mpc. Apart from the distance measurement, we also investigate some physical properties related to the maser disk in NGC 5765b. The high-velocity features are spatially distributed into several clumps, which may indicate the existence of a spiral density wave...

  20. Precise Distances for Main-Belt Asteroids in Only Two Nights

    E-Print Network [OSTI]

    Heinze, Aren N

    2015-01-01

    We present a method for calculating precise distances to asteroids using only two nights of data from a single location --- far too little for an orbit --- by exploiting the angular reflex motion of the asteroids due to Earth's axial rotation. We refer to this as the rotational reflex velocity method. While the concept is simple and well-known, it has not been previously exploited for surveys of main-belt asteroids. We offer a mathematical development, estimates of the errors of the approximation, and a demonstration using a sample of 197 asteroids observed for two nights with a small, 0.9-meter telescope. This demonstration used digital tracking to enhance detection sensitivity for faint asteroids, but our distance determination works with any detection method. Forty-eight asteroids in our sample had known orbits prior to our observations, and for these we demonstrate a mean fractional error of only 1.6% between the distances we calculate and those given in ephemerides from the Minor Planet Center. In contra...

  1. Distance-dependent plasma composition and ion energy in high power impulse magnetron sputtering

    SciTech Connect (OSTI)

    Ehiasarian, Arutiun P; Andersson, Joakim; Anders, Andr

    2010-04-18

    The plasma composition of high power impulse magnetron sputtering (HIPIMS) has been studied for titanium and chromium targets using a combined energy analyser and quadrupole mass spectrometer. Measurements were done at distances from 50 to 300 mm from the sputtering target. Ti and Cr are similar in atomic mass but have significantly different sputter yields, which gives interesting clues on the effect of the target on plasma generation and transport of atoms. The Ti and Cr HIPIMS plasmas operated at a peak target current density of ~;;0.5 A cm-2. The measurements of the argon and metal ion content as well as the ion energy distribution functions showed that (1) singly and doubly charged ions were found for argon as well as for the target metal, (2) the majority of ions were singly charged argon for both metals at all distances investigated, (3) the Cr ion density was maintained to distances further from the target than Ti. Gas rarefaction was identified as a main factor promoting transport of metal ions, with the stronger effect observed for Cr, the material with higher sputter yield. Cr ions were found to displace a significant portion of the gas ions, whereas this was less evident in the Ti case. The observations indicate that the presence of metal vapour promotes charge exchange and reduces the electron temperature and thereby practically prevents the production of Ar2+ ions near the target. The content of higher charge states of metal ions depends on the probability of charge exchange with argon.

  2. THE MEGAMASER COSMOLOGY PROJECT. V. AN ANGULAR-DIAMETER DISTANCE TO NGC 6264 AT 140 Mpc

    SciTech Connect (OSTI)

    Kuo, C. Y.; Braatz, J. A.; Lo, K. Y.; Condon, J. J.; Impellizzeri, C. M. V.; Reid, M. J.; Henkel, C.

    2013-04-20

    We present the direct measurement of the Hubble constant, yielding the direct measurement of the angular-diameter distance to NGC 6264 using the H{sub 2}O megamaser technique. Our measurement is based on sensitive observations of the circumnuclear megamaser disk from four observations with the Very Long Baseline Array, the Green Bank Telescope (GBT), and the Effelsberg telescope. We also monitored the maser spectral profile for 2.3 years using the GBT to measure accelerations of maser lines by tracking their line-of-sight velocities as they change with time. The measured accelerations suggest that the systemic maser spots have a significantly wider radial distribution than in the archetypal megamaser in NGC 4258. We model the maser emission as arising from a circumnuclear disk with orbits dominated by the central black hole. The best fit of the data gives a Hubble constant of H{sub 0} = 68 {+-} 9 km s{sup -1} Mpc{sup -1}, which corresponds to an angular-diameter distance of 144 {+-} 19 Mpc. In addition, the fit also gives a mass of the central black hole of (3.09 {+-} 0.42) Multiplication-Sign 10{sup 7} M{sub Sun }. The result demonstrates the feasibility of measuring distances to galaxies located well into the Hubble flow by using circumnuclear megamaser disks.

  3. Minimum separation distances for natural gas pipeline and boilers in the 300 area, Hanford Site

    SciTech Connect (OSTI)

    Daling, P.M.; Graham, T.M.

    1997-08-01

    The U.S. Department of Energy (DOE) is proposing actions to reduce energy expenditures and improve energy system reliability at the 300 Area of the Hanford Site. These actions include replacing the centralized heating system with heating units for individual buildings or groups of buildings, constructing a new natural gas distribution system to provide a fuel source for many of these units, and constructing a central control building to operate and maintain the system. The individual heating units will include steam boilers that are to be housed in individual annex buildings located at some distance away from nearby 300 Area nuclear facilities. This analysis develops the basis for siting the package boilers and natural gas distribution systems to be used to supply steam to 300 Area nuclear facilities. The effects of four potential fire and explosion scenarios involving the boiler and natural gas pipeline were quantified to determine minimum separation distances that would reduce the risks to nearby nuclear facilities. The resulting minimum separation distances are shown in Table ES.1.

  4. Dose distribution in water for monoenergetic photon point sources in the energy range of interest in brachytherapy: Monte Carlo simulations with PENELOPE and GEANT4

    E-Print Network [OSTI]

    Almansa, J F; Anguiano, M; Guerrero, R; Lallena, A M; Al-Dweri, Feras M.O.; Almansa, Julio F.; Guerrero, Rafael

    2006-01-01

    Monte Carlo calculations using the codes PENELOPE and GEANT4 have been performed to characterize the dosimetric properties of monoenergetic photon point sources in water. The dose rate in water has been calculated for energies of interest in brachytherapy, ranging between 10 keV and 2 MeV. A comparison of the results obtained using the two codes with the available data calculated with other Monte Carlo codes is carried out. A chi2-like statistical test is proposed for these comparisons. PENELOPE and GEANT4 show a reasonable agreement for all energies analyzed and distances to the source larger than 1 cm. Significant differences are found at distances from the source up to 1 cm. A similar situation occurs between PENELOPE and EGS4.

  5. Ultrananocrystalline diamond cantilever wide dynamic range acceleration/vibration/pressure sensor

    DOE Patents [OSTI]

    Krauss, Alan R. (Naperville, IL); Gruen, Dieter M. (Downers Grove, IL); Pellin, Michael J. (Naperville, IL); Auciello, Orlando (Bolingbrook, IL)

    2002-07-23

    An ultrananocrystalline diamond (UNCD) element formed in a cantilever configuration is used in a highly sensitive, ultra-small sensor for measuring acceleration, shock, vibration and static pressure over a wide dynamic range. The cantilever UNCD element may be used in combination with a single anode, with measurements made either optically or by capacitance. In another embodiment, the cantilever UNCD element is disposed between two anodes, with DC voltages applied to the two anodes. With a small AC modulated voltage applied to the UNCD cantilever element and because of the symmetry of the applied voltage and the anode-cathode gap distance in the Fowler-Nordheim equation, any change in the anode voltage ratio V1/N2 required to maintain a specified current ratio precisely matches any displacement of the UNCD cantilever element from equilibrium. By measuring changes in the anode voltage ratio required to maintain a specified current ratio, the deflection of the UNCD cantilever can be precisely determined. By appropriately modulating the voltages applied between the UNCD cantilever and the two anodes, or limit electrodes, precise independent measurements of pressure, uniaxial acceleration, vibration and shock can be made. This invention also contemplates a method for fabricating the cantilever UNCD structure for the sensor.

  6. Ultrananocrystalline Diamond Cantilever Wide Dynamic Range Acceleration/Vibration /Pressure Sensor

    DOE Patents [OSTI]

    Krauss, Alan R. (Naperville, IL); Gruen, Dieter M. (Downers Grove, IL); Pellin, Michael J. (Naperville, IL); Auciello, Orlando (Bolingbrook, IL)

    2003-09-02

    An ultrananocrystalline diamond (UNCD) element formed in a cantilever configuration is used in a highly sensitive, ultra-small sensor for measuring acceleration, shock, vibration and static pressure over a wide dynamic range. The cantilever UNCD element may be used in combination with a single anode, with measurements made either optically or by capacitance. In another embodiment, the cantilever UNCD element is disposed between two anodes, with DC voltages applied to the two anodes. With a small AC modulated voltage applied to the UNCD cantilever element and because of the symmetry of the applied voltage and the anode-cathode gap distance in the Fowler-Nordheim equation, any change in the anode voltage ratio V1/V2 required to maintain a specified current ratio precisely matches any displacement of the UNCD cantilever element from equilibrium. By measuring changes in the anode voltage ratio required to maintain a specified current ratio, the deflection of the UNCD cantilever can be precisely determined. By appropriately modulating the voltages applied between the UNCD cantilever and the two anodes, or limit electrodes, precise independent measurements of pressure, uniaxial acceleration, vibration and shock can be made. This invention also contemplates a method for fabricating the cantilever UNCD structure for the sensor.

  7. Lunar Laser Ranging Test of the Invariance of c

    E-Print Network [OSTI]

    Daniel Y. Gezari

    2010-06-22

    The speed of laser light pulses launched from Earth and returned by a retro-reflector on the Moon was calculated from precision round-trip time-of-flight measurements and modeled distances. The measured speed of light (c) in the moving observers rest frame was found to exceed the canonical value c = 299,792,458 m/s by 200+/-10 m/s, just the speed of the observatory along the line-of-sight due to the rotation of the Earth during the measurements. This is a first-order violation of local Lorentz invariance; the speed of light seems to depend on the motion of the observer after all, as in classical wave theory, and implies that a preferred reference frame exists for the propagation of light. However, the present experiment cannot identify the physical system to which such a reference frame might be tied.

  8. Observations of Comets C/2007 D1 (LINEAR), C/2007 D3 (LINEAR), C/2010 G3 (WISE), C/2010 S1 (LINEAR), and C/2012 K6 (McNaught) at large heliocentric distances

    E-Print Network [OSTI]

    Ivanova, Oleksandra; Kriandova, Zuzana Seman; Svore?, Jan; Korsun, Pavlo; Afanasiev, Viktor; Resetnyk, Volodymyr; Andreev, Maxim

    2015-01-01

    Photometric and spectroscopic observations of five nearly parabolic comets with eccentricity larger than 0.99 at heliocentric distances greater than 4 AU were performed. No molecular emission was observed for any studied comet and the entire cometary activity in all cases was attributed to dust production. Upper limits of the gas production rates for the main neutral molecules in the cometary comae were calculated. The derived values of dust apparent magnitudes were used to estimate the upper limit of the geometric cross-section of cometary nuclei (upper limits of radii range from 2 km to 28 km). Due to the poor sublimation of water ice at these distances from the Sun, other mechanisms triggering activity in comets are discussed.

  9. A Comparison of Short Rayleigh Range FEL Performance with Simulations

    SciTech Connect (OSTI)

    Benson, Stephen; Evtushenko, Pavel; Michelle D. Shinn; Neil, George; Blau, Joe; Burggraff, D.; Colson, William; Crooker, P.P.; Sans Aguilar, J.

    2007-08-01

    One approach to attaining very high power in a free-electron laser (FEL) is to operate with a Rayleigh range much smaller than the wiggler length. Previously, 3D simulations of Free-electron laser (FEL) oscillators showed that FEL gain doesn't fall off with Rayleigh range as predicted by one-dimensional simulations*. They also predict that the angular tolerance for the mirrors is much large than simplistic theory predicts. Using the IR Upgrade laser at Jefferson Lab lasing at 935 nm we have studied the performance of an FEL with very short Rayleigh range. We also looked at the angular sensitivity for several different Rayleigh ranges. We find very good agreement between simulations and measured gain and angular sensitivities. Surprisingly the gain continues to rise as the Rayleigh range is shortened and continues to grow even when the resonator becomes geometrically unstable. The same behavior is seen in both the experiment and simulations. We also find that, even for large Rayleigh r

  10. Model-independent distance calibration of high-redshift gamma-ray bursts and constrain on the $?$CDM model

    E-Print Network [OSTI]

    Hai-Nan Lin; Xin Li; Zhe Change

    2015-07-19

    Gamma-ray bursts (GRBs) are luminous enough to be detectable up to redshift $z\\sim 10$. They are often proposed as complementary tools to type-Ia supernovae (SNe Ia) in tracing the Hubble diagram of the Universe. The distance calibrations of GRBs usually make use one or some of the empirical luminosity correlations, such as $\\tau_{\\rm lag}-L$, $V-L$, $E_p-L$, $E_p-E_{\\gamma}$, $\\tau_{\\rm RT}-L$ and $E_p-E_{\\rm iso}$ relations. These calibrating methods are based on the underling assumption that the empirical luminosity correlations are universal over all redshift range. In this paper, we test the possible redshift dependence of six luminosity correlations by dividing GRBs into low-$z$ and high-$z$ classes according to their redshift smaller or larger than 1.4. It is shown that the $E_p-E_{\\gamma}$ relation for low-$z$ GRBs is consistent with that for high-$z$ GRBs within $1\\sigma$ uncertainty. The intrinsic scatter of $V-L$ relation is too larger to make a convincing conclusion. For the rest four correlations, however, low-$z$ GRBs differ from high-$z$ GRBs at more than $3\\sigma$ confidence level. As such, we calibrate GRBs using the $E_p-E_{\\gamma}$ relation in a model-independent way. The constraint of high-$z$ GRBs on the $\\Lambda$CDM model gives $\\Omega_M=0.302\\pm 0.142(1\\sigma)$, well consistent with the Planck 2015 results.

  11. The Effects of Metallicity on the Cepheid P-L Relation and the Consequences for the Extragalactic Distance Scale

    E-Print Network [OSTI]

    Paul D. Allen; Tom Shanks

    2001-02-26

    Using published HST Cepheid data from 25 galaxies, we have found a correlation between the P-L dispersion and host galaxy metallicity which is significant at the ~3sigma level in the V band. This result supports the suggestion that the metallicity dependence of the Cepheid P-L relation may be stronger than expected. The high observed dispersions in the HST Cepheid P-L relations have the further consequence that the bias due to incompleteness in the P-L relation at faint magnitudes is more significant than previously thought. In the HST sample, galaxies at higher distance tend to have higher metallicity. This means that when a full metallicity/incompleteness correction is made, a scale error in the published Cepheid distances is seen in the sense that the published distance moduli are increasingly underestimates at larger distances. This results in the average distance modulus to the four galaxies in the Virgo cluster core increasing from (m-M)_0=31.2+-0.19 to (m-M)_0=31.8+-0.17 with similar increases for the Fornax and Ursa Major clusters. For the 18 HST galaxies with good Tully-Fisher distances and (m-M)_0>29.5 the Cepheid-TF distance modulus average residual increases from 0.44+-0.09 mag to 0.82+-0.1mag indicating a significant scale error in TF distances and resulting in the previous Pierce & Tully TF estimate of H_0=85 reducing to H_0=58+-7. Finally, for the 8 HST galaxies with SNIa, the metallicity corrected Cepheid distances now imply a metallicity dependence of SNIa peak luminosity in the sense that metal-poor hosts have lower luminosity SNIa. Thus SNIa Hubble diagram estimates of both H_0 and q_0 may also require significant metallicity corrections.

  12. Range descriptions for the spherical mean Radon transform

    E-Print Network [OSTI]

    M. Agranovsky; P. Kuchment; E. T. Quinto

    2006-09-02

    The transform considered in the paper averages a function supported in a ball in $\\RR^n$ over all spheres centered at the boundary of the ball. This Radon type transform arises in several contemporary applications, e.g. in thermoacoustic tomography and sonar and radar imaging. Range descriptions for such transforms are important in all these areas, for instance when dealing with incomplete data, error correction, and other issues. Four different types of complete range descriptions are provided, some of which also suggest inversion procedures. Necessity of three of these (appropriately formulated) conditions holds also in general domains, while the complete discussion of the case of general domains would require another publication.

  13. Distances to Galactic high-velocity clouds. I. Cohen Stream, complex GCP, cloud g1

    E-Print Network [OSTI]

    B. P. Wakker; D. G. York; R. Wilhelm; J. C. Barentine; P. Richter; T. C. Beers; Z. Ivezic; J. C. Howk

    2007-09-12

    The high- and intermediate-velocity interstellar clouds (HVCs/IVCs) are tracers of energetic processes in and around the Milky Way. Clouds with near-solar metallicity about one kpc above the disk trace the circulation of material between disk and halo (the Galactic Fountain). The Magellanic Stream consists of gas tidally extracted from the SMC, tracing the dark matter potential of the Milky Way. Several other HVCs have low-metallicity and appear to trace the continuing accretion of infalling intergalactic gas. These assertions are supported by the metallicities (0.1 to 1 solar) measured for about ten clouds in the past decade. Direct measurements of distances to HVCs have remained elusive, however. In this paper we present four new distance brackets, using VLT observations of interstellar \\CaII H and K absorption toward distant Galactic halo stars. We derive distance brackets of 5.0 to 11.7 kpc for the Cohen Stream (likely to be an infalling low-metallicity cloud), 9.8 to 15.1 kpc for complex GCP (also known as the Smith Cloud or HVC40-15+100 and with still unknown origin), 1.0 to 2.7 kpc for an IVC that appears associated with the return flow of the Fountain in the Perseus Arm, and 1.8 to 3.8 kpc for cloud g1, which appears to be in the outflow phase of the Fountain. Our measurements further demonstrate that the Milky Way is accreting substantial amounts of gaseous material, which influences the Galaxy's current and future dynamical and chemical evolution.

  14. ELLIPSOIDAL VARIABLE V1197 ORIONIS: ABSOLUTE LIGHT-VELOCITY ANALYSIS FOR KNOWN DISTANCE

    SciTech Connect (OSTI)

    Wilson, R. E.; Chochol, D.; KomzIk, R.; Van Hamme, W.; Pribulla, T.; Volkov, I.

    2009-09-01

    V1197 Orionis light curves from a long-term observing program for red giant binaries show ellipsoidal variation of small amplitude in the V and R{sub C} bands, although not clearly in U and B. Eclipses are not detected. All four bands show large irregular intrinsic variations, including fleeting quasi-periodicities identified by power spectra, that degrade analysis and may be caused by dynamical tides generated by orbital eccentricity. To deal with the absence of eclipses and consequent lack of astrophysical and geometrical information, direct use is made of the Hipparcos parallax distance while the V and R{sub C} light curves and (older) radial velocity curves are analyzed simultaneously in terms of absolute flux. The red giant's temperature is estimated from new spectra. This type of analysis, called Inverse Distance Estimation for brevity, is new and can also be applied to other ellipsoidal variables. Advantages gained by utilization of definite distance and temperature are discussed in regard to how radius, fractional lobe filling, and mass ratio information are expressed in the observations. The advantages were tested in solutions of noisy synthetic data. Also discussed and tested by simulations are ideas on the optimal number of light curves to be solved simultaneously under various conditions. The dim companion has not been observed or discussed in the literature but most solutions find its mass to be well below that of the red giant. Solutions show red giant masses that are too low for evolution to the red giant stage within the age of the Galaxy, although that result is probably an artifact of the intrinsic brightness fluctuations.

  15. Distance-regular graphs of $q$-Racah type and the $q$-tetrahedron algebra

    E-Print Network [OSTI]

    Ito, Tatsuro

    2007-01-01

    In this paper we discuss a relationship between the following two algebras: (i) the subconstituent algebra $T$ of a distance-regular graph that has $q$-Racah type; (ii) the $q$-tetrahedron algebra $\\boxtimes_q$ which is a $q$-deformation of the three-point $sl_2$ loop algebra. Assuming that every irreducible $T$-module is thin, we display an algebra homomorphism from $\\boxtimes_q$ into $T$ and show that $T$ is generated by the image together with the center $Z(T)$.

  16. Thermal decoherence of long-distance entanglement in spin-1 chains

    E-Print Network [OSTI]

    Xiang Hao

    2009-08-21

    he thermal entanglement is generated by weakly interacting atoms with an isotropic spin-1 chain. The decoherence of the entanglement is mainly investigated. The effective Hamiltonian is analytically obtained by the approximation method of perturbation. The scaling behavior of the effective coupling is numerically illustrated by the exact diagonalization. It is found out that the decay of the entanglement is slow in the case of non interacting spins. The long-distance thermal entangled states can be used as the noisy channel for the achievement of the quantum teleportation.

  17. Spin Sum Rules and the Strong Coupling Constant at large distance

    E-Print Network [OSTI]

    A. Deur

    2009-06-23

    We present recent results on the Bjorken and the generalized forward spin polarizability sum rules from Jefferson Lab Hall A and CLAS experiments, focusing on the low $Q^2$ part of the measurements. We then discuss the comparison of these results with Chiral Perturbation theory calculations. In the second part of this paper, we show how the Bjorken sum rule with its connection to the Gerasimov-Drell-Hearn sum, allows us to conveniently define an effective coupling for the strong force at all distances.

  18. The design, construction, and operation of long-distance high-voltage electricity transmission technologies.

    SciTech Connect (OSTI)

    Molburg, J. C.; Kavicky, J. A.; Picel, K. C.

    2008-03-03

    This report focuses on transmission lines, which operate at voltages of 115 kV and higher. Currently, the highest voltage lines comprising the North American power grid are at 765 kV. The grid is the network of transmission lines that interconnect most large power plants on the North American continent. One transmission line at this high voltage was built near Chicago as part of the interconnection for three large nuclear power plants southwest of the city. Lines at this voltage also serve markets in New York and New England, also very high demand regions. The large power transfers along the West Coast are generally at 230 or 500 kV. Just as there are practical limits to centralization of power production, there are practical limits to increasing line voltage. As voltage increases, the height of the supporting towers, the size of the insulators, the distance between conductors on a tower, and even the width of the right-of-way (ROW) required increase. These design features safely isolate the electric power, which has an increasing tendency to arc to ground as the voltage (or electrical potential) increases. In addition, very high voltages (345 kV and above) are subject to corona losses. These losses are a result of ionization of the atmosphere, and can amount to several megawatts of wasted power. Furthermore, they are a local nuisance to radio transmission and can produce a noticeable hum. Centralized power production has advantages of economies of scale and special resource availability (for instance, hydro resources), but centralized power requires long-distance transfers of power both to reach customers and to provide interconnections for reliability. Long distances are most economically served at high voltages, which require large-scale equipment and impose a substantial footprint on the corridors through which power passes. The most visible components of the transmission system are the conductors that provide paths for the power and the towers that keep these conductors at a safe distance from each other and from the ground and the natural and built environment. Common elements that are generally less visible (or at least more easily overlooked) include the maintained ROW along the path of the towers, access roads needed for maintenance, and staging areas used for initial construction that may be restored after construction is complete. Also visible but less common elements along the corridor may include switching stations or substations, where lines of similar or different voltages meet to transfer power.

  19. "Actuation at a distance" of microelectromechanical systems using photoelectrowetting: proof-of-concept

    E-Print Network [OSTI]

    Gaudet, Matthieu

    2012-01-01

    We demonstrate here a proof-of-concept experiment that microelectromechanical systems (MEMS) can be actuated using photoelectrowetting. In order to demonstrate this, a 30 \\mu m thick aluminum cantilever is actuated using an ordinary white light source. A deflection of 56 \\mu m is observed using a light irradiance equal to \\approx 1000 W m-2 at a bias of 7 V. The deflection of the cantilever relies on the recently observed photoelectrowetting effect [Sci. Rep.1, 184 (2011)]. Such "actuation at a distance" could be useful for optical addressing and control of autonomous wireless sensors, MEMS and microsystems.

  20. Measuring the Distance between Merge Trees (Book) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport) | SciTechelement method inBook: Measuring the Distance

  1. Measuring the Distance between Merge Trees (Book) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport) | SciTechelement method inBook: Measuring the DistanceBook:

  2. GEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges

    E-Print Network [OSTI]

    Frandsen, Sren

    process cooling, combined heat and power installations and air-conditioning equip- ment for hospitalsGEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges Top-level engineering solutions,Eurovent verification and many more. GEA is one of the longest established and principal manufacturers of heat exchange

  3. Wildland Fire Risk and Management on West and South Ranges

    E-Print Network [OSTI]

    #12;#12;Wildland Fire Risk and Management on West and South Ranges Schofield Barracks, Oahu March) Intermountain Fire Science Lab, Missoula, MT CEMML TPS01-11 #12;#12;Wildland Fire Risk and Management on West .................................................................................................................................. 1 Fire Characteristics of Common Species

  4. Aerodynamic Optimization Under a Range of Operating Conditions

    E-Print Network [OSTI]

    Zingg, David W.

    Aerodynamic Optimization Under a Range of Operating Conditions David W. Zingg and Samy Elias. This can be achieved through multipoint optimization. The desired performance objective and operating conditions must be speci ed, and the resulting optimization problem must be solved in such a manner

  5. Session 2: Modelling air pollution across a range of scales

    E-Print Network [OSTI]

    Session 2: Modelling air pollution across a range of scales Ruth Doherty, Massimo Vieno, Ian Mac) EMEP2009 (less complex) Observations Modelling regional air pollution #12;Nested regions: 50 to 5 to 1 km2 O3 concentration (ppb) NO2 concentration (g m-3) #12;Modelling Urban air pollution Regional

  6. The height and range of watermelons without wall

    E-Print Network [OSTI]

    Thomas Feierl

    2009-04-03

    We determine the weak limit of the distribution of the random variables "height" and "range" on the set of p-watermelons without wall restriction as the number of steps tends to infinity. Additionally, we provide asymptotics for the moments of the random variable "height".

  7. A New Wide Range Equation of State for Helium-4

    E-Print Network [OSTI]

    Ortiz Vega, Diego O

    2013-08-01

    -19], vapor pressure [20-24], and Pressure- Volume-Temperature (PVT) data [25-27]. Even though these approaches may be accurate over a limited range, they often fail under other conditions or when predicting a derived property different from the one used...

  8. Technique for extending the range of a signal measuring circuit

    DOE Patents [OSTI]

    Chaprnka, Anthony G. (Cockeysville, MD); Sun, Shan C. (Pittsburgh, PA); Vercellotti, Leonard C. (Verona, PA)

    1978-01-01

    An input signal supplied to a signal measuring circuit is either amplified or attenuated as necessary to establish the magnitude of the input signal within the defined dynamic range of the measuring circuit and the output signal developed by the measuring circuit is subsequently readjusted through amplification or attenuation to develop an output signal which corresponds to the magnitude of the initial input signal.

  9. Reducing Aviation's Environmental Impact Through Large Aircraft For Short Ranges

    E-Print Network [OSTI]

    Zingg, David W.

    aviation's impact on climate change. Examples include alternative fuels,4,5 blendedReducing Aviation's Environmental Impact Through Large Aircraft For Short Ranges Gaetan K.W Kenway,500 nm. We show that the impact of civil aviation on climate change can be reduced by using large

  10. Ranges of Human Mobility in Los Angeles and New York

    E-Print Network [OSTI]

    Kobourov, Stephen G.

    1 Ranges of Human Mobility in Los Angeles and New York Sibren Isaacman, Richard Becker, Ramon C. In this work, we study human mobility in Los Angeles and New York by analyzing anonymous records of approximate): Los Angeles (LA) and New York (NY). Specifically, we analyze anonymous records of approximate cell

  11. Author's Accepted Manuscript Full range determination of 222

    E-Print Network [OSTI]

    ; surface water; groundwater. 1. INTRODUCTION Radon is a rare gas with three natural radioactive isotopesAuthor's Accepted Manuscript Full range determination of 222 Rn at the watershed scale by liquid Rn at the watershed scale by liquid scintillation counting, Applied Radiation and Isotopes, http

  12. Publications Forest Research publishes a wide range of

    E-Print Network [OSTI]

    Publications Forest Research publishes a wide range of material, from corporate reports and plans publications catalogue at www.forestry.gov.uk/publications In addition, our researchers publish peer Annual Report and Accounts 20072008 #12;Publications Forestry Commission technical publications

  13. Distributed Range-Based Relative Localization of Robot Swarms

    E-Print Network [OSTI]

    Napp, Nils

    Distributed Range-Based Relative Localization of Robot Swarms Alejandro Cornejo and Radhika Nagpal studies the problem of having mobile robots in a multi-robot system maintain an estimate of the relative position and relative orientation of near-by robots in the environment. This problem is studied

  14. The Impact of Imported Water on Hardwoods Range Ecosystems1

    E-Print Network [OSTI]

    introduction of contaminants into water-ways. Although counter-intuitive, water itself has become a pollutant549 The Impact of Imported Water on Hardwoods Range Ecosystems1 Thomas Scott2 Abstract Water Pollution is defined as the corruption of ecosystems, human health, and local economies by the inappropriate

  15. Using Body Condition Scores to Manage Range Cows and Rangeland

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    Lyons, Robert K.; Machen, Richard V.

    2001-07-19

    , to avoid damage to for- ages and soils, the range resource should be moni- tored closely when it has high stock densities, such as those in the spring herd. 7.5 7 6.5 6 5.5 5 4.5 Aug Oct Dec Feb Apr Jun Body Condition Score Summer-calving Spring...

  16. We offer a full range of surgical expertise. Bariatric Surgery

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    Mohaghegh, Shahab

    We offer a full range of surgical expertise. Bariatric Surgery Appointments: 304-598-4890 Pediatric are a major tertiary referral center for the region and state, offering the highest level of clinical program offering cardiac surgery for children in the state. Pediatric cardiothoracic surgery Robert A

  17. BUILDING AN ACCURATE RANGE FINDER WITH OFF THE SHELF COMPONENTS'

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    Southern California, University of

    -Marc, and Gkrard Medioni Institute for Robotics and Intelligent Systems Departments of Electrical Engineering of light projected on an object placed upon a rotary table driven by a personal computer. This computer of the rotary table and h the height along its axis of rotation. Choosing different viewpoints, Cartesian range

  18. Painting in High Dynamic Range M. Colbert a,*,1

    E-Print Network [OSTI]

    Reinhard, Erik

    Painting in High Dynamic Range M. Colbert a,*,1 , E. Reinhard b,a , C.E. Hughes a,2 a School two new brush constructs to a typical virtual painting interface, such as Adobe Photoshop. First, we the perception of glare as the underlying basis for determining the contrasts painted onto the HDR image, giving

  19. Little Green Codes: Energy-Efficient Short-Range Communication

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    California at Berkeley, University of

    Little Green Codes: Energy-Efficient Short-Range Communication Pulkit Grover and Anant Sahai, the optimizing rate for our bounds on the energy consumption of green codes converges to 1 in the context of AWGN energy as green codes. Classical information theoretic approach finds the minimum transmission energy

  20. Range Sustainability (VSP) PNWD-SA-7032 1

    E-Print Network [OSTI]

    and Richard O. Gilbert Statistical Sciences Battelle Pacific Northwest Division Richland, Washington Prepared for Department of the Navy Naval Sea Systems Command NAVSEA Programs Field Office Goose Creek, SC #12;Range's GuidesVSP User's Guides User's guide for VSP RS module ? Gilbert R.O., J.E. Wilson and B.A. Pulsipher