Sample records for temporarily high local

  1. TEMPORARILY ALLOYING TITANIUM TO FACILITATE FRICTION STIR WELDING

    SciTech Connect (OSTI)

    Hovanski, Yuri

    2009-05-06T23:59:59.000Z

    While historically hydrogen has been considered an impurity in titanium, when used as a temporary alloying agent it promotes beneficial changes to material properties that increase the hot-workability of the metal. This technique known as thermohydrogen processing was used to temporarily alloy hydrogen with commercially pure titanium sheet as a means of facilitating the friction stir welding process. Specific alloying parameters were developed to increase the overall hydrogen content of the titanium sheet ranging from commercially pure to 30 atomic percent. Each sheet was evaluated to determine the effect of the hydrogen content on process loads and tool deformation during the plunge phase of the friction stir welding process. Two materials, H-13 tool steel and pure tungsten, were used to fabricate friction stir welding tools that were plunged into each of the thermohydrogen processed titanium sheets. Tool wear was characterized and variations in machine loads were quantified for each tool material and weld metal combination. Thermohydrogen processing was shown to beneficially lower plunge forces and stabilize machine torques at specific hydrogen concentrations. The resulting effects of hydrogen addition to titanium metal undergoing the friction stir welding process are compared with modifications in titanium properties documented in modern literature. Such comparative analysis is used to explain the variance in resulting process loads as a function of the initial hydrogen concentration of the titanium.

  2. High power density supercapacitors using locally aligned carbon nanotube electrodes

    E-Print Network [OSTI]

    Du, C S; Yeh, J; Pan, Ning

    2005-01-01T23:59:59.000Z

    High power density supercapacitors using locally alignedof high power density supercapacitors and other similarcells [6], and for supercapacitors [7–18]. As unique energy

  3. High Performance Leasing Strategies for State and Local Governments

    Broader source: Energy.gov [DOE]

    Presentation for the SEE Action Series: High Performance Leasing Strategies for State and Local Governments webinar, presented on January 26, 2013 as part of the U.S. Department of Energy's Technical Assistance Program (TAP).

  4. Local Option- Property Tax Credit for High Performance Buildings

    Broader source: Energy.gov [DOE]

    Similar to Maryland's Local Option Property Tax Credit for Renewable Energy, Title 9 of Maryland's property tax code creates an optional property tax credit for high performance buildings. This...

  5. Numerical Prediction of High-Impact Local Weather: A

    E-Print Network [OSTI]

    Xue, Ming

    Chapter 6 Numerical Prediction of High-Impact Local Weather: A Driver for Petascale Computing Ming winds, lightning, hurricanes and winter storms, cause hundreds of deaths and average annual economic of mitigating the impacts of such events on the economy and society is obvious, our ability to do so

  6. 1 Some researchers (see, for example, Saylor 1995) have suggested that illumination may only temporarily render some of the dye

    E-Print Network [OSTI]

    Crimaldi, John P.

    temporarily render some of the dye incapable of re-fluorescing. The aspect of reversibility in photo photobleaching, where some dye molecules are rendered incapable of fluorescing after being subjected to laser

  7. Local thermodynamic equilibrium in rapidly heated high energy density plasmas

    SciTech Connect (OSTI)

    Aslanyan, V.; Tallents, G. J. [York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)

    2014-06-15T23:59:59.000Z

    Emission spectra and the dynamics of high energy density plasmas created by optical and Free Electron Lasers (FELs) depend on the populations of atomic levels. Calculations of plasma emission and ionization may be simplified by assuming Local Thermodynamic Equilibrium (LTE), where populations are given by the Saha-Boltzmann equation. LTE can be achieved at high densities when collisional processes are much more significant than radiative processes, but may not be valid if plasma conditions change rapidly. A collisional-radiative model has been used to calculate the times taken by carbon and iron plasmas to reach LTE at varying densities and heating rates. The effect of different energy deposition methods, as well as Ionization Potential Depression are explored. This work shows regimes in rapidly changing plasmas, such as those created by optical lasers and FELs, where the use of LTE is justified, because timescales for plasma changes are significantly longer than the times needed to achieve an LTE ionization balance.

  8. High Performance by Exploiting Information Locality through Reverse Computing

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with power consumption and heat dissipation. 1Occupancy is the ratio of active a CPU is, it has to request data from different levels of some memory hierarchy. Hence CPU speed locality" instead of "data locality" is because information may be carried not only by a data but also

  9. High power density supercapacitors using locally aligned carbon nanotube electrodes

    E-Print Network [OSTI]

    Du, C S; Yeh, J; Pan, Ning

    2005-01-01T23:59:59.000Z

    4484/16/4/003 High power density supercapacitors usingproduced very high speci?c power density of about 30 kW kg ?manufacturing of high power density supercapacitors and

  10. Inferring Variable Conflicts for Local Search from High-Level Models

    E-Print Network [OSTI]

    Flener, Pierre

    Inferring Variable Conflicts for Local Search from High-Level Models Magnus °Agren, Pierre Flener in local search algorithms are often shrunk by only considering moves modifying variables that actually for speeding up search. State-of-the-art solutions to, e.g., the progressive party problem exploit

  11. High performance BLAS formulation of the multipole-to-local operator in the Fast Multipole Method

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    High performance BLAS formulation of the multipole-to-local operator in the Fast Multipole Method (submitted) Olivier Coulaud Pierre Fortin Jean Roman December 20, 2006 Abstract The multipole-to-local (M2L) operator is the most time-consuming part of the far field computation in the Fast Multipole Method

  12. Properties of localized, high latitude, dayside aurora H. U. Frey,1

    E-Print Network [OSTI]

    California at Berkeley, University of

    Properties of localized, high latitude, dayside aurora H. U. Frey,1 T. J. Immel,1 G. Lu,2 J different type of high latitude aurora, which does not show any signature of precipitating protons. It also causes the aurora. We interpret this aurora as the optical signature of electron precipitation

  13. Local

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flows and the

  14. Local

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flows and theplasma

  15. Local

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flows and

  16. Analysis of local warm forming of high strength steel using near infrared ray energy

    SciTech Connect (OSTI)

    Yang, W. H., E-mail: whyang21@hyundai.com [Hyundai Motor Company, 700 Yeompo-ro, Buk-Gu, Ulsan, 683-791 (Korea, Republic of); Lee, K., E-mail: klee@deform.co.kr [Solution Lab, 502, 102, Dunsan-daero 117 beon-gil, Seo-Gu, Daejeon, 302-834 (Korea, Republic of); Lee, E. H., E-mail: mtgs2@kaist.ac.kr, E-mail: dyyang@kaist.ac.kr; Yang, D. Y., E-mail: mtgs2@kaist.ac.kr, E-mail: dyyang@kaist.ac.kr [KAIST, Science Town291, Daehak-ro, Yuseong-Gu, Daejeon 305-701 (Korea, Republic of)

    2013-12-16T23:59:59.000Z

    The automotive industry has been pressed to satisfy more rigorous fuel efficiency requirements to promote energy conservation, safety features and cost containment. To satisfy this need, high strength steel has been developed and used for many different vehicle parts. The use of high strength steels, however, requires careful analysis and creativity in order to accommodate its relatively high springback behavior. An innovative method, called local warm forming with near infrared ray, has been developed to help promote the use of high strength steels in sheet metal forming. For this method, local regions of the work piece are heated using infrared ray energy, thereby promoting the reduction of springback behavior. In this research, a V-bend test is conducted with DP980. After springback, the bend angles for specimens without local heating are compared to those with local heating. Numerical analysis has been performed using the commercial program, DEFORM-2D. This analysis is carried out with the purpose of understanding how changes to the local stress distribution will affect the springback during the unloading process. The results between experimental and computational approaches are evaluated to assure the accuracy of the simulation. Subsequent numerical simulation studies are performed to explore best practices with respect to thermal boundary conditions, timing, and applicability to the production environment.

  17. Storage-discharge relationships at different catchment scales based on local high-precision gravimetry

    E-Print Network [OSTI]

    Troch, Peter

    Storage-discharge relationships at different catchment scales based on local high, Institute of Earth and Environmental Sciences, Potsdam, Germany Abstract: In hydrology, the storage of catchment science. To date, there are no direct methods to measure water storage at catchment scales (101

  18. Local deformations and incommensurability of high quality epitaxial graphene on a weakly interacting transition metal

    E-Print Network [OSTI]

    parameter mismatch when cooling down the sample from the graphene preparation temperature to the measurement to the preparation conditions. All these effects are consistent with initial growth and subsequent pining of grapheneLocal deformations and incommensurability of high quality epitaxial graphene on a weakly

  19. LOCAL ENERGY ANALYSIS OF HIGH-CYCLE FATIGUE USING FIELD MEASUREMENTS F. Latourte1

    E-Print Network [OSTI]

    Boyer, Edmond

    , Albuquerque : United States (2009)" #12;The paper is composed as follows: the different terms of the energy an experimental setup developed to locally estimate the terms of the energy balance associated with high cycle during HCF. An improved combined image processing was developed to obtain 2D patterns of energy balances

  20. High Resolution SAR Interferometry: influence of local topography in the context of glacier monitoring

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    High Resolution SAR Interferometry: influence of local topography in the context of glacier the opportu- nity to measure temperate glacier surface topography and displacement between the two for glacier activity monitoring, by providing regular measure- ments such as surface topography, velocity

  1. Why High-Energy Optical Potential can be and should be Considered Local

    E-Print Network [OSTI]

    Reading, John F.

    1970-01-01T23:59:59.000Z

    PHYSICAL REVIEW C V OL UM E 1, N UM B E R 3 MARCH &97O Why the High-Energy Optical Potential Can Be and Should Be Considered Local* J. F. READING f' northeastern Vn& ersity, Boston, Massachusetts OZll5 (Received 23 October 1969...-body t matrix which leads directly to a local potential. I. INTRODUCTION l 1HE scattering from a set of E nonoverlapping po- .. tentials s(r ?r;) is completely determined by the single potential phase shifts' or by the on-shell t matrix 1(E, k@', k...

  2. Shafts Temporarily Covered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9 SeptemberSetting the Stage for theeightSeymourShadi3,

  3. High sensitivity localization of parathyroid tumors by nuclear imaging in 50 proven cases

    SciTech Connect (OSTI)

    Okerlund, M.D.; Sheldon, K.; Corpuz, S.; O'Connell, W.; Faulkner, D.; Galante, M.; Clark, O.

    1984-01-01T23:59:59.000Z

    Fifty patients with surgically and biochemically proven hyperparathyroidism had imaging studies of the neck performed with Thallium-201 chloride (2-3mCi) and Tc-99m pertechnetate, a gamma camera and pinhole collimator, and acquired and processed with a DEC PDP-11 computer with color coding for differences in localization of Tl-201 (in thyroid and parathyroid tumor) compared with pertechnetate (in the thyroid alone). Thirty-eight of 43 single parathyroid adenomas (88%) were successfully localized, 6 of 9 multiple adenomas in 3 such patients, and 11 of 12 hyperplastic glands in 3 patients with secondary hyperparathyroidism, and 1 of 1 with cancer. With regard to tumor size, 92% of tumors 1.0 cm. or larger were found, but only 50% of those smaller than 0.7 cm. One substernal adenoma 0.6 cm. in size was missed, but 5 of 6 adenomas previously missed at surgery were found successfully. No normal or functionally suppressed glands were identified, and no false positive studies were seen, even in patients with abnormal thyroid glands. Nuclear imaging studies with computerized comparison are the most efficacious single method for preoperative localization of parathyroid tumors yet reported, and distinguish single versus multiple disease with high reliability. All 3 intrathyroid parathyroid adenomas were identified as to site with this method. Advantages of preoperative localization of parathyroid tumors include planning of surgical approach, shortening of operations, and localization of thyroidotomy for intrathyroid tumors.

  4. Identification of the nuclear localization and export signals of high risk HPV16 E7 oncoprotein

    SciTech Connect (OSTI)

    Knapp, Alixandra A.; McManus, Patrick M.; Bockstall, Katy [Biology Department, Boston College, Higgins Hall, Room 578, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 (United States); Moroianu, Junona [Biology Department, Boston College, Higgins Hall, Room 578, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 (United States)], E-mail: moroianu@bc.edu

    2009-01-05T23:59:59.000Z

    The E7 oncoprotein of high risk human papillomavirus type 16 (HPV16) binds and inactivates the retinoblastoma (RB) family of proteins. Our previous studies suggested that HPV16 E7 enters the nucleus via a novel Ran-dependent pathway independent of the nuclear import receptors (Angeline, M., Merle, E., and Moroianu, J. (2003). The E7 oncoprotein of high-risk human papillomavirus type 16 enters the nucleus via a nonclassical Ran-dependent pathway. Virology 317(1), 13-23.). Here, analysis of the localization of specific E7 mutants revealed that the nuclear localization of E7 is independent of its interaction with pRB or of its phosphorylation by CKII. Fluorescence microscopy analysis of enhanced green fluorescent protein (EGFP) and 2xEGFP fusions with E7 and E7 domains in HeLa cells revealed that E7 contains a novel nuclear localization signal (NLS) in the N-terminal domain (aa 1-37). Interestingly, treatment of transfected HeLa cells with two specific nuclear export inhibitors, Leptomycin B and ratjadone, changed the localization of 2xEGFP-E7{sub 38-98} from cytoplasmic to mostly nuclear. These data suggest the presence of a leucine-rich nuclear export signal (NES) and a second NLS in the C-terminal domain of E7 (aa 38-98). Mutagenesis of critical amino acids in the putative NES sequence ({sub 76}IRTLEDLLM{sub 84}) changed the localization of 2xEGFP-E7{sub 38-98} from cytoplasmic to mostly nuclear suggesting that this is a functional NES. The presence of both NLSs and an NES suggests that HPV16 E7 shuttles between the cytoplasm and nucleus which is consistent with E7 having functions in both of these cell compartments.

  5. To the Non-Local Theory of the High Temperature Superconductivity

    E-Print Network [OSTI]

    Boris V. Alexeev

    2012-01-30T23:59:59.000Z

    The possibility of the non local physics application in the theory of superconductivity is investigated. It is shown that by the superconducting conditions the relay ("estafette") motion of the soliton' system ("attice ion - electron") is realizing by the absence of chemical bonds. From the position of the quantum hydrodynamics the problem of creation of the high temperature superconductors leads to finding of materials which lattices could realize the soliton' motion without destruction. These materials should be created using the technology of quantum dots. Key words: Foundations of the theory of transport processes; The theory of solitons; Generalized hydrodynamic equations; Foundations of quantum mechanics; high temperature superconductivity.

  6. Seasonal dependence of localized, high-latitude dayside aurora H. U. Frey, N. stgaard, and T. J. Immel

    E-Print Network [OSTI]

    California at Berkeley, University of

    Seasonal dependence of localized, high-latitude dayside aurora (HiLDA) H. U. Frey, N. Østgaard frequently observes intense ultraviolet (UV) emissions from a localized High Latitude Dayside Aurora (HiLDA) poleward of the general auroral oval location [Frey et al., 2003a]. It has been shown that this aurora

  7. High-Dose-Rate Brachytherapy Alone for Localized Prostate Cancer in Patients at Moderate or High Risk of Biochemical Recurrence

    SciTech Connect (OSTI)

    Hoskin, Peter [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom); Rojas, Ana, E-mail: arc03@btconnect.com [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom); Lowe, Gerry; Bryant, Linda; Ostler, Peter; Hughes, Rob; Milner, Jessica; Cladd, Helen [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom)

    2012-03-15T23:59:59.000Z

    Purpose: To evaluate genitourinary (GU) and gastrointestinal (GI) morbidity and biochemical control of disease in patients with localized prostate adenocarcinoma treated with escalating doses per fraction of high-dose rate brachytherapy alone. Methods and Materials: A total of 197 patients were treated with 34 Gy in four fractions, 36 Gy in four fractions, 31.5 Gy in three fractions, or 26 Gy in two fractions. Median follow-up times were 60, 54, 36, and 6 months, respectively. Results: Incidence of early Grade {>=} 3 GU morbidity was 3% to 7%, and Grade 4 was 0% to 4%. During the first 12 weeks, the highest mean International Prostate Symptom Score (IPSS) value was 14, and between 6 months and 5 years it was 8. Grade 3 or 4 early GI morbidity was not observed. The 3-year actuarial rate of Grade 3 GU was 3% to 16%, and was 3% to 7% for strictures requiring surgery (4-year rate). An incidence of 1% Grade 3 GI events was seen at 3 years. Late Grade 4 GU or GI events were not observed. At 3 years, 99% of patients with intermediate-risk and 91% with high-risk disease were free of biochemical relapse (log-rank p = 0.02). Conclusions: There was no significant difference in urinary and rectal morbidity between schedules. Biochemical control of disease in patients with intermediate and high risk of relapse was good.

  8. High Speed Localized Cooling using SiGe Superlattice Microrefrigerators Yan Zhang, James Christofferson and Ali Shakouri

    E-Print Network [OSTI]

    High Speed Localized Cooling using SiGe Superlattice Microrefrigerators Yan Zhang, James In this paper, thin film based SiGe superlattice microrefrigerators are fabricated and characterized in terms

  9. In situ measurements of Krypton in Xenon gas with a quadrupole mass spectrometer following a cold-trap at a temporarily reduced pumping speed

    E-Print Network [OSTI]

    Ethan Brown; Stephan Rosendahl; Christian Huhmann; Christian Weinheimer; Hans Kettling

    2012-12-20T23:59:59.000Z

    A new method for measuring trace amounts of krypton in xenon using a cold trap with a residual gas analyzer has been developed, which achieves an increased sensitivity by temporarily reducing the pumping speed while expending a minimal amount of xenon. By partially closing a custom built butterfly valve between the measurement chamber and the turbomolecular pump, a sensitivity of 40 ppt has been reached. This method has been tested on an ultra-pure gas sample from Air Liquide with an unknown intrinsic krypton concentration, yielding a krypton concentration of $330 \\pm 200$ ppt.

  10. Homogenization of a locally-periodic medium with areas of low and high diffusivity

    E-Print Network [OSTI]

    van Noorden, T

    2010-01-01T23:59:59.000Z

    We aim at understanding transport in porous materials including regions with both high and low diffusivities. For such scenarios, the transport becomes structured (here: {\\em micro-macro}). The geometry we have in mind includes regions of low diffusivity arranged in a locally-periodic fashion. We choose a prototypical advection-diffusion system (of minimal size), discuss its formal homogenization (the heterogenous medium being now assumed to be made of zones with circular areas of low diffusivity of $x$-varying sizes), and prove the weak solvability of the limit two-scale reaction-diffusion model. A special feature of our analysis is that most of the basic estimates (positivity, $L^\\infty$-bounds, uniqueness, energy inequality) are obtained in $x$-dependent Bochner spaces.

  11. A new method with high sensitivity and specificity for localization of abnormal parathyroid glands

    SciTech Connect (OSTI)

    Okerlund, M.D.; Sheldon, K.; Corpuz, S.; O'Connell, W.; Faulkner, D.; Clark, O.; Galante, M.

    1984-09-01T23:59:59.000Z

    A novel method for localization of abnormal parathyroid glands involving color-processing of nuclear scintigrams of the neck after injection of Thallium-201 and Technetium pertechnetate is presented with surgical correlation. Preoperative localization of single parathyroid adenomas was successful in 88% of previously unoperated patients and in 85.7% of those with adenomas not located at previous surgery. Eighty-three per cent of glands with secondary hyperplasia, 66% of glands with primary hyperplasia, and one carcinoma were localized. No abnormal studies were seen in non-hyperparathyroid hypercalcemia, and no false positive studies were seen. Localization appeared related to larger adenomas (300-5000 mg), although one of 60 mg was localized. Color-comparison dual-isotype scintigraphy was useful for localization of parathyroid adenomas and hyperplastic glands and exceeded the reported sensitivity of either ultrasonography or computerized tomography. It deserves wider evaluation in preoperative management of at least hyperparathyroidism of the primary or persistent types.

  12. Carbon Isotope Ratio in 12 CO/ 13 CO toward Local Molecular Clouds with Near-Infrared High Resolution Spectroscopy of

    E-Print Network [OSTI]

    Usuda, Tomonori

    ), therefore serves as a chronological measure of the chemical enrichment of the galaxy. The isotopic ratio of the Galactic plane. The 13 C isotope is produced faster there, rapidly enriching the interstellar medium (ISMCarbon Isotope Ratio in 12 CO/ 13 CO toward Local Molecular Clouds with Near-Infrared High

  13. Identifying Men Diagnosed With Clinically Localized Prostate Cancer Who are at High Risk for Death From Prostate Cancer

    E-Print Network [OSTI]

    Chen, Ming-Hui

    Identifying Men Diagnosed With Clinically Localized Prostate Cancer Who are at High Risk for Death From Prostate Cancer Anthony V. D'Amico,* Ming Hui-Chen, Andrew A. Renshaw, Brenda Sussman, Kimberly A), Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, Massachusetts, Department

  14. IAEACN69/EXP2/12 Highly Radiative Plasmas for Local Transport Studies and Power and Particle

    E-Print Network [OSTI]

    fusion energy production (7.6 MJ) in a TFTR pulse. Comparisons of the measured radiated power profiles the severe problem of concentrated power loading of the divertor. [2] Experiments have shown that a large1 IAEA­CN­69/EXP2/12 Highly Radiative Plasmas for Local Transport Studies and Power and Particle

  15. IAEA-CN-69/EXP2/12 Highly Radiative Plasmas for Local Transport Studies and Power and Particle

    E-Print Network [OSTI]

    energy production (7.6ÊMJ) in a TFTR pulse. Comparisons of the measured radiated power profiles the severe problem of concentrated power loading of the divertor.Ê[2] Experiments have shown that a large1 IAEA-CN-69/EXP2/12 Highly Radiative Plasmas for Local Transport Studies and Power and Particle

  16. A Local Convergence Theory of a Filter Line Search Method for ...

    E-Print Network [OSTI]

    In this paper the theory of local convergence for a class of line search filter type ..... As for proving global convergence, we use the terminology first introduced in ... We do this by exiting the algorithm temporarily and enter into a feasibility.

  17. Spread of highly localized wave-packet in the tight-binding lattice: Entropic and information-theoretical characterization

    SciTech Connect (OSTI)

    Cuevas, F.A. [Departamento de Fisica, Universidad Catolica del Norte, Avenida Angamos 0610, Antofagasta (Chile); Curilef, S., E-mail: scurilef@ucn.cl [Departamento de Fisica, Universidad Catolica del Norte, Avenida Angamos 0610, Antofagasta (Chile); Plastino, A.R., E-mail: arplastino@ugr.es [National University La Plata, CREG-UNLP, C.C. 727, 1900 La Plata (Argentina); Instituto Carlos I, Universidad de Granada, Granada (Spain)

    2011-10-15T23:59:59.000Z

    The spread of a wave-packet (or its deformation) is a very important topic in quantum mechanics. Understanding this phenomenon is relevant in connection with the study of diverse physical systems. In this paper we apply various 'spreading measures' to characterize the evolution of an initially localized wave-packet in a tight-binding lattice, with special emphasis on information-theoretical measures. We investigate the behavior of both the probability distribution associated with the wave packet and the concomitant probability current. Complexity measures based upon Renyi entropies appear to be particularly good descriptors of the details of the delocalization process. - Highlights: > Spread of highly localized wave-packet in the tight-binding lattice. > Entropic and information-theoretical characterization is used to understand the delocalization. > The behavior of both the probability distribution and the concomitant probability current is investigated. > Renyi entropies appear to be good descriptors of the details of the delocalization process.

  18. Characteristics of high-frequency precursors to edge-localized activity in the PBX-M tokamak

    SciTech Connect (OSTI)

    Kaye, S.M.; Manickam, J.; Bell, R.; LeBlanc, B.; Kessel, C.; Kugel, H.; Paul, S.; Sesnic, S.; Takahashi, H. (Princeton Univ., NJ (USA). Plasma Physics Lab.); Asakura, N. (Tokyo Univ. (Japan)); Lau, Y.T. (Maryland Univ., College Park, MD (USA))

    1990-03-01T23:59:59.000Z

    High {beta}{sub pol} H-mode plasmas in the PBX-M tokamak often exhibit periods of Edge Localized Mode (ELM) activity, with each ELM preceded by a short duration ({le} 350 {mu}sec) burst of high frequency (200 to 250 kHz) magnetic activity. The burst grows on a time scale of 10 {mu}sec, and disappears just prior to the rapid increase in the D{sub {alpha}} emission that is characteristic of the ELM. The burst of activity is observed at all poloidal locations, with the largest amplitudes seen on the coils on the inner major radius side, indicating that the mode is not outward ballooning in character. Stability calculations indicate that a likely candidate for this high frequency ELM precursor is the pressure-driven ideal kink. 12 refs., 4 figs.

  19. Collaborative multi-vehicle localization and mapping in high clutter environments

    E-Print Network [OSTI]

    Moratuwage, M. D. P.

    Among today's robotics applications, exploration missions in dynamic, high clutter and uncertain environmental conditions is quite common. Autonomous multi-vehicle systems come in handy for such exploration missions since ...

  20. Method for formation of high quality back contact with screen-printed local back surface field

    DOE Patents [OSTI]

    Rohatgi, Ajeet (Marietta, GA); Meemongkolkiat, Vichai (Atlanta, GA)

    2010-11-30T23:59:59.000Z

    A thin silicon solar cell having a back dielectric passivation and rear contact with local back surface field is described. Specifically, the solar cell may be fabricated from a crystalline silicon wafer having a thickness from 50 to 500 micrometers. A barrier layer and a dielectric layer are applied at least to the back surface of the silicon wafer to protect the silicon wafer from deformation when the rear contact is formed. At least one opening is made to the dielectric layer. An aluminum contact that provides a back surface field is formed in the opening and on the dielectric layer. The aluminum contact may be applied by screen printing an aluminum paste having from one to 12 atomic percent silicon and then applying a heat treatment at 750 degrees Celsius.

  1. Frequent Occurrence of High-speed Local Mass Downflows on the Solar Surface

    E-Print Network [OSTI]

    T. Shimizu; B. W. Lites; Y. Katsukawa; K. Ichimoto; Y. Suematsu; S. Tsuneta; S. Nagata; M. Kubo; R. A. Shine; T. D. Tarbell

    2008-04-08T23:59:59.000Z

    We report on new spectro-polarimetric measurements with simultaneous filter imaging observation, revealing the frequent appearance of polarization signals indicating high-speed, probably supersonic, downflows that are associated with at least three different configurations of magnetic fields in the solar photosphere. The observations were carried out with the Solar Optical Telescope onboard the {\\em Hinode} satellite. High speed downflows are excited when a moving magnetic feature is newly formed near the penumbral boundary of sunspots. Also, a new type of downflows is identified at the edge of sunspot umbra that lack accompanying penumbral structures. These may be triggered by the interaction of magnetic fields sweeped by convection with well-concentrated magnetic flux. Another class of high speed downflows are observed in quiet sun and sunspot moat regions. These are closely related to the formation of small concentrated magnetic flux patches. High speed downflows of all types are transient time-dependent mass motions. These findings suggest that the excitation of supersonic mass flows are one of the key observational features of the dynamical evolution occurring in magnetic-field fine structures on the solar surface.

  2. Kinematic classifications of local interacting galaxies: implications for the merger/disk classifications at high-z

    E-Print Network [OSTI]

    Hung, Chao-Ling; Yuan, Tiantian; Larson, Kirsten L; Casey, Caitlin M; Smith, Howard A; Sanders, D B; Kewley, Lisa J; Hayward, Christopher C

    2015-01-01T23:59:59.000Z

    The classification of galaxy mergers and isolated disks is key for understanding the relative importance of galaxy interactions and secular evolution during the assembly of galaxies. The kinematic properties of galaxies as traced by emission lines have been used to suggest the existence of a significant population of high-z star-forming galaxies consistent with isolated rotating disks. However, recent studies have cautioned that post-coalescence mergers may also display disk-like kinematics. To further investigate the robustness of merger/disk classifications based on kinematic properties, we carry out a systematic classification of 24 local (U)LIRGs spanning a range of galaxy morphologies: from isolated spiral galaxies, ongoing interacting systems, to fully merged remnants. We artificially redshift the WiFeS observations of these local (U)LIRGs to z=1.5 to make a realistic comparison with observations at high-z, and also to ensure that all galaxies have the same spatial sampling of ~900 pc. Using both kineme...

  3. Single-molecule imaging at high fluorophore concentrations by local activation of dye

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

    Geertsema, Hylkje J. [Zernike Inst. of Advanced Materials, Groningen (The Netherlands); Mangel, Walter F. [Brookhaven National Lab. (BNL), Upton, NY (United States); Schulte, Aartje C. [Zernike Inst. of Advanced Materials, Groningen (The Netherlands); Spenkelink, Lisanne M. [Zernike Inst. of Advanced Materials, Groningen (The Netherlands); McGrath, William J. [Brookhaven National Lab. (BNL), Upton, NY (United States); Morrone, Seamus R. [John Hopkins School of Medicine, Baltimore, MD (United States); Sohn, Jungsan [John Hopkins School of Medicine, Baltimore, MD (United States); Robinson, Andrew [Zernike Inst. of Advanced Materials, Groningen (The Netherlands); van Oijen, Antoine M. [Zernike Inst. of Advanced Materials, Groningen (The Netherlands)

    2015-02-01T23:59:59.000Z

    Single-molecule fluorescence microscopy is a powerful approach to observe biomolecular interactions with high spatial and temporal resolution. Detecting fluorescent signals from individual, labeled proteins above high levels of background fluorescence remains challenging, however. For this reason, the concentrations of labeled proteins in in vitro assays are often kept low compared to their in vivo concentrations. Here, we present a new fluorescence imaging technique by which single fluorescent molecules can be observed in real time at high, physiologically relevant concentrations. The technique requires a protein and its macromolecular substrate to be labeled each with a different fluorophore. Then, making use of short-distance energy-transfer mechanisms, the fluorescence from only those proteins bound to their substrate are selectively activated. This approach is demonstrated by labeling a DNA substrate with an intercalating stain, exciting the stain, and using energy transfer from the stain to activate the fluorescence of only those labeled DNA-binding proteins bound to the DNA. Such an experimental design allowed us to observe the sequence-independent interaction of Cy5-labeled interferon-inducible protein 16 (IFI16) with DNA and the sliding via one-dimensional diffusion of Cy5-labeled adenovirus protease (pVIc-AVP) on DNA in the presence of a background of hundreds of nM Cy5 fluorophore.

  4. High-Dose-Rate Interstitial Brachytherapy as Monotherapy for Clinically Localized Prostate Cancer: Treatment Evolution and Mature Results

    SciTech Connect (OSTI)

    Zamboglou, Nikolaos [Department of Radiation Oncology, Klinikum Offenbach, Offenbach (Germany)] [Department of Radiation Oncology, Klinikum Offenbach, Offenbach (Germany); Tselis, Nikolaos, E-mail: ntselis@hotmail.com [Department of Radiation Oncology, Klinikum Offenbach, Offenbach (Germany)] [Department of Radiation Oncology, Klinikum Offenbach, Offenbach (Germany); Baltas, Dimos [Department of Medical Physics and Engineering, Klinikum Offenbach, Offenbach (Germany)] [Department of Medical Physics and Engineering, Klinikum Offenbach, Offenbach (Germany); Buhleier, Thomas [Department of Radiation Oncology, Klinikum Offenbach, Offenbach (Germany)] [Department of Radiation Oncology, Klinikum Offenbach, Offenbach (Germany); Martin, Thomas [Department of Radiation Oncology, Klinikum Bremen-Mitte, Bremen (Germany)] [Department of Radiation Oncology, Klinikum Bremen-Mitte, Bremen (Germany); Milickovic, Natasa; Papaioannou, Sokratis [Department of Medical Physics and Engineering, Klinikum Offenbach, Offenbach (Germany)] [Department of Medical Physics and Engineering, Klinikum Offenbach, Offenbach (Germany); Ackermann, Hanns [Institute of Biostatistics, J.W. Goethe University of Frankfurt, Frankfurt (Germany)] [Institute of Biostatistics, J.W. Goethe University of Frankfurt, Frankfurt (Germany); Tunn, Ulf W. [Department of Urology, Klinikum Offenbach, Offenbach (Germany)] [Department of Urology, Klinikum Offenbach, Offenbach (Germany)

    2013-03-01T23:59:59.000Z

    Purpose: To report the clinical outcome of high-dose-rate (HDR) interstitial (IRT) brachytherapy (BRT) as sole treatment (monotherapy) for clinically localized prostate cancer. Methods and Materials: Between January 2002 and December 2009, 718 consecutive patients with clinically localized prostate cancer were treated with transrectal ultrasound (TRUS)-guided HDR monotherapy. Three treatment protocols were applied; 141 patients received 38.0 Gy using one implant in 4 fractions of 9.5 Gy with computed tomography-based treatment planning; 351 patients received 38.0 Gy in 4 fractions of 9.5 Gy, using 2 implants (2 weeks apart) and intraoperative TRUS real-time treatment planning; and 226 patients received 34.5 Gy, using 3 single-fraction implants of 11.5 Gy (3 weeks apart) and intraoperative TRUS real-time treatment planning. Biochemical failure was defined according to the Phoenix consensus, and toxicity was evaluated using Common Toxicity Criteria for Adverse Events version 3. Results: The median follow-up time was 52.8 months. The 36-, 60-, and 96-month biochemical control and metastasis-free survival rates for the entire cohort were 97%, 94%, and 90% and 99%, 98%, and 97%, respectively. Toxicity was scored per event, with 5.4% acute grade 3 genitourinary and 0.2% acute grade 3 gastrointestinal toxicity. Late grade 3 genitourinary and gastrointestinal toxicities were 3.5% and 1.6%, respectively. Two patients developed grade 4 incontinence. No other instance of grade 4 or greater acute or late toxicity was reported. Conclusion: Our results confirm IRT-HDR-BRT is safe and effective as monotherapy for clinically localized prostate cancer.

  5. High Latitude, Translucent Molecular Clouds as Probes of Local Cosmic Rays

    E-Print Network [OSTI]

    Abrahams, R D

    2015-01-01T23:59:59.000Z

    We analyze the gamma-ray emission from 9 high latitude, translucent molecular clouds taken with the Fermi Large Area Telescope (LAT) between 250 MeV and 10 GeV. Observations of gamma-rays allow us to probe the density and spectrum of cosmic rays in the solar neighborhood. The clouds studied lie within $\\sim\\!$270 pc from the Sun and are selected from the Planck all-sky CO map. Gamma-rays in this energy range mostly result from cosmic ray interactions with the interstellar medium, which is traced with three components: HI, CO, and dark gas. Every cloud is detected and shows significant, extended gamma-ray emission from molecular gas. The gamma-ray emission is dominated by the CO-emitting gas in some clouds, but by the CO-dark gas in others. The average emissivity and gamma-ray power law index from HI above 1 GeV shows no evidence of a systematic variation. The CO-to-H$_2$ conversion factor shows no variation between clouds over this small spatial range, but shows significant variations within each cloud. The a...

  6. A CATALOG OF ULTRA-COMPACT HIGH VELOCITY CLOUDS FROM THE ALFALFA SURVEY: LOCAL GROUP GALAXY CANDIDATES?

    SciTech Connect (OSTI)

    Adams, Elizabeth A. K.; Giovanelli, Riccardo; Haynes, Martha P., E-mail: betsey@astro.cornell.edu, E-mail: riccardo@astro.cornell.edu, E-mail: haynes@astro.cornell.edu [Center for Radiophysics and Space Research, Space Sciences Building, Cornell University, Ithaca, NY 14853 (United States)

    2013-05-01T23:59:59.000Z

    We present a catalog of 59 ultra-compact high velocity clouds (UCHVCs) extracted from the 40% complete ALFALFA HI-line survey. The ALFALFA UCHVCs have median flux densities of 1.34 Jy km s{sup -1}, median angular diameters of 10', and median velocity widths of 23 km s{sup -1}. We show that the full UCHVC population cannot easily be associated with known populations of high velocity clouds. Of the 59 clouds presented here, only 11 are also present in the compact cloud catalog extracted from the commensal GALFA-HI survey, demonstrating the utility of this separate dataset and analysis. Based on their sky distribution and observed properties, we infer that the ALFALFA UCHVCs are consistent with the hypothesis that they may be very low mass galaxies within the Local Volume. In that case, most of their baryons would be in the form of gas, and because of their low stellar content, they remain unidentified by extant optical surveys. At distances of {approx}1 Mpc, the UCHVCs have neutral hydrogen (H I) masses of {approx}10{sup 5}-10{sup 6} M{sub Sun }, H I diameters of {approx}2-3 kpc, and indicative dynamical masses within the H I extent of {approx}10{sup 7}-10{sup 8} M{sub Sun }, similar to the Local Group ultra-faint dwarf Leo T. The recent ALFALFA discovery of the star-forming, metal-poor, low mass galaxy Leo P demonstrates that this hypothesis is true in at least one case. In the case of the individual UCHVCs presented here, confirmation of their extragalactic nature will require further work, such as the identification of an optical counterpart to constrain their distance.

  7. Diffusion Synthetic Acceleration for High-Order Discontinuous Finite Element SN Transport Schemes and Application to Locally Refined Unstructured Meshes

    SciTech Connect (OSTI)

    Yaqi Wang; Jean C. Ragusa

    2011-10-01T23:59:59.000Z

    Diffusion synthetic acceleration (DSA) schemes compatible with adaptive mesh refinement (AMR) grids are derived for the SN transport equations discretized using high-order discontinuous finite elements. These schemes are directly obtained from the discretized transport equations by assuming a linear dependence in angle of the angular flux along with an exact Fick's law and, therefore, are categorized as partially consistent. These schemes are akin to the symmetric interior penalty technique applied to elliptic problems and are all based on a second-order discontinuous finite element discretization of a diffusion equation (as opposed to a mixed or P1 formulation). Therefore, they only have the scalar flux as unknowns. A Fourier analysis has been carried out to determine the convergence properties of the three proposed DSA schemes for various cell optical thicknesses and aspect ratios. Out of the three DSA schemes derived, the modified interior penalty (MIP) scheme is stable and effective for realistic problems, even with distorted elements, but loses effectiveness for some highly heterogeneous configurations. The MIP scheme is also symmetric positive definite and can be solved efficiently with a preconditioned conjugate gradient method. Its implementation in an AMR SN transport code has been performed for both source iteration and GMRes-based transport solves, with polynomial orders up to 4. Numerical results are provided and show good agreement with the Fourier analysis results. Results on AMR grids demonstrate that the cost of DSA can be kept low on locally refined meshes.

  8. Correlation of Local Failure With Measures of Dose Insufficiency in the High-Dose Single-Fraction Treatment of Bony Metastases

    SciTech Connect (OSTI)

    Lovelock, D. Michael, E-mail: lovelocm@mskcc.or [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Zhang Zhigang [Department of Epidemiology-Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Jackson, Andrew [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Keam, Jennifer [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Bekelman, Justin [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States); Bilsky, Mark [Department of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Lis, Eric [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Yamada, Yoshiya [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)

    2010-07-15T23:59:59.000Z

    Purpose: In the setting of high-dose single-fraction image-guided radiotherapy of spine metastases, the delivered dose is hypothesized to be a significant factor in local control. We investigated the dependence of local control on measures of dose insufficiency. Methods and Materials: The minimum doses received by the hottest 100%, 98%, and 95% (D{sub min}, D{sub 98}, and D{sub 95}) of the gross target volume (GTV) were computed for 91 consecutively treated lesions observed in 79 patients. Prescribed doses of 18-24 Gy were delivered in a single fraction. The spinal cord and cauda equina were constrained to a maximum dose of 12-14 Gy and 16 Gy, respectively. A rank-sum test was used to assess the differences between radiographic local failure and local control. Results: With a median follow-up of 18 months, seven local failures have occurred. The distributions of GTV D{sub min}, D{sub 98}, and D{sub 95} for treatments resulting in local failure were found to be statistically different from the corresponding distributions of the patient group as a whole. Taking no account of histology, p values calculated for D{sub min}, D{sub 98}, and D{sub 95} were 0.004, 0.012, and 0.031, respectively. No correlations between local failure and target volume or between local failure and anatomic location were found. Conclusions: The results indicate that D{sub min}, D{sub 98}, and D{sub 95} may be important risk factors for local failure. No local failures in any histology were observed when D{sub min} was >15 Gy, suggesting that this metric may be an important predictor of local control.

  9. The Search for High Energy Extended Emission by Fermi-LAT from Swift-Localized Gamma-Ray Bursts

    SciTech Connect (OSTI)

    Chiang, J.; /Stanford U., HEPL /SLAC; Racusin, J.L.; /NASA, Goddard

    2012-05-01T23:59:59.000Z

    The brighter Fermi-LAT bursts have exhibited emission at energies >0.1 GeV that persists as late as {approx}2 ks after the prompt phase has nominally ended. This so-called 'extended emission' could arise from continued activity of the prompt burst mechanism or it could be the start of a high energy afterglow component. The high energy extended emission seen by the LAT has typically followed a t{sup -}{gamma} power-law temporal decay where {gamma} {approx} 1.2-1.7 and has shown no strong indication of spectral evolution. In contrast, the prompt burst emission generally displays strong spectral variability and more complex temporal changes in the LAT band. This differing behavior suggests that the extended emission likely corresponds to an early afterglow phase produced by an external shock. In this study, we look for evidence of high energy extended emission from 145 Swift-localized GRBs that have occurred since the launch of Fermi. A majority of these bursts were either outside of the LAT field-of-view or were otherwise not detected by the LAT during the prompt phase. However, because of the scanning operation of the Fermi satellite, the long-lived extended emission of these bursts may be detectable in the LAT data on the {approx}few ks time scale. We will look for emission from individual bursts and will perform a stacking analysis in order to set bounds on this emission for the sample as a whole. The detection of such emission would have implications for afterglow models and for the overall energy budget of GRBs.

  10. Understanding local degradation of cycled Ni-rich cathode materials at high operating temperature for Li-ion batteries

    SciTech Connect (OSTI)

    Hwang, Sooyeon; Kim, Dong Hyun; Chung, Kyung Yoon; Chang, Wonyoung, E-mail: cwy@kist.re.kr [Center for Energy Convergence, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of)

    2014-09-08T23:59:59.000Z

    We utilize transmission electron microscopy in conjunction with electron energy loss spectroscopy to investigate local degradation that occurs in Li{sub x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2} cathode materials (NCA) after 30 cycles with cutoff voltages of 4.3?V and 4.8?V at 55?°C. NCA has a homogeneous crystallographic structure before electrochemical reactions; however, we observed that 30 cycles of charge/discharge reactions induced inhomogeneity in the crystallographic and electronic structures and also introduced porosity particularly at surface area. These changes were more noticeable in samples cycled with higher cutoff voltage of 4.8?V. Effect of operating temperature was further examined by comparing electronic structures of oxygen of the NCA particles cycled at both room temperature and 55?°C. The working temperature has a greater impact on the NCA cathode materials at a cutoff voltage of 4.3?V that is the practical the upper limit voltage in most applications, while a cutoff voltage of 4.8?V is high enough to cause surface degradation even at room temperature.

  11. The Influence of Prostate Volume on Outcome After High-Dose-Rate Brachytherapy Alone for Localized Prostate Cancer

    SciTech Connect (OSTI)

    Le, Hien, E-mail: hien.le@health.sa.gov.au; Rojas, Ana; Alonzi, Roberto; Hughes, Robert; Ostler, Peter; Lowe, Gerry; Bryant, Linda; Hoskin, Peter

    2013-10-01T23:59:59.000Z

    Objective: To determine whether late genitourinary toxicity, biochemical control of prostate cancer, and dosimetric parameters in patients with large prostate glands is different from those variables in men with smaller glands after treatment with high-dose-rate brachytherapy alone (HDR-BT). Methods: From November 2003 to July 2009, 164 patients with locally advanced prostate carcinoma were sequentially enrolled and treated with 34 or 36 Gy in 4 fractions and 31.5 Gy in 3 fractions of {sup 192}Ir HDR-BT alone. The median follow-up time was 71 months. Gland size was not considered in the selection criteria for this study. Estimates of freedom from biochemical relapse (FFbR) and late morbidity, stratified by median clinical target volume (CTV), were obtained, and differences were compared. Results: The median CTV volume was 60 cc (range, 15-208 cc). Dose–volume parameters D90 and V100 (ie, minimum dose to 90% of the prostate volume and volume receiving 100% of the prescribed isodose) achieved in patients with glands ?60 cc were not significantly different from those with glands <60 cc (P?.2). Nonetheless, biochemical control in patients with larger CTV was significantly higher (91% vs 78% at 6 years; P=.004). In univariate and multivariate analysis, CTV was a significant predictor for risk of biochemical relapse. This was not at the expense of an increase in either moderate (P=.6) or severe (P=.3) late genitourinary toxicity. The use of hormonal therapy was 17% lower in the large gland group (P=.01). Conclusions: Prostate gland size does not affect dosimetric parameters in HDR-BT assessed by D90 and V100. In patients with larger glands, a significantly higher biochemical control of disease was observed, with no difference in late toxicity. This improvement cannot be attributed to differences in dosimetry. Gland size should not be considered in the selection of patients for HDR-BT.

  12. DUST ATTENUATION IN UV-SELECTED STARBURSTS AT HIGH REDSHIFT AND THEIR LOCAL COUNTERPARTS: IMPLICATIONS FOR THE COSMIC STAR FORMATION RATE DENSITY

    SciTech Connect (OSTI)

    Overzier, Roderik A.; Wang Jing [Max-Planck-Institut for Astrophysics, D-85748 Garching (Germany); Heckman, Timothy M. [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Armus, Lee; Howell, Justin [Spitzer Science Center, Caltech, MS 220-6, Pasadena, CA 91125 (United States); Buat, Veronique [Laboratoire d'Astrophysique de Marseille, OAMP, Universite Aix-marseille, CNRS, 38 rue Frederic Joliot-Curie, 13388 Marseille Cedex 13 (France); Meurer, Gerhardt [ICRAR/University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia); Seibert, Mark [Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Siana, Brian; Goncalves, Thiago S.; Martin, D. Christopher; Neill, James D. [California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States); Basu-Zych, Antara [NASA Goddard Space Flight Center, Laboratory for X-ray Astrophysics, Greenbelt, MD 20771 (United States); Charlot, Stephane [PMC Univ Paris 06, UMR7095, Institut d'Astrophysique de Paris, F-75014 Paris (France); Rich, R. Michael [Department of Physics and Astronomy, Division of Astronomy and Astrophysics, University of California, Los Angeles, CA 90095-1562 (United States); Salim, Samir [National Optical Astronomical Observatories, 950 N. Cherry Avenue, Tucson, AZ 85719 (United States); Schiminovich, David, E-mail: overzier@mpa-garching.mpg.de [Department of Astronomy, Columbia University, MC 2457, 550 West 120th Street, New York, NY 10027 (United States)

    2011-01-01T23:59:59.000Z

    We present a new analysis of the dust obscuration in starburst galaxies at low and high redshifts. This study is motivated by our unique sample of the most extreme UV-selected starburst galaxies in the nearby universe (z < 0.3), found to be good analogs of high-redshift Lyman break galaxies (LBGs) in most of their physical properties. We find that the dust properties of the Lyman break analogs (LBAs) are consistent with the relation derived previously by Meurer et al. (M99) that is commonly used to dust-correct star formation rate (SFR) measurements at a very wide range of redshifts. We directly compare our results with high-redshift samples (LBGs, 'BzK', and submillimeter galaxies at z {approx} 2-3) having IR data either from Spitzer or Herschel. The attenuation in typical LBGs at z {approx} 2-3 and LBAs is very similar. Because LBAs are much better analogs to LBGs compared to previous local star-forming samples, including M99, the practice of dust-correcting the SFRs of high-redshift galaxies based on the local calibration is now placed on a much more solid ground. We illustrate the importance of this result by showing how the locally calibrated relation between UV measurements and extinction is used to estimate the integrated, dust-corrected SFR density at z {approx_equal} 2-6.

  13. Studies of local and intermediate range structure in crystalline and amorphouse materials at high pressure using high-energy x-rays.

    SciTech Connect (OSTI)

    Ehm, L.; Antao, M.; Chen, J.; Locke, D. R.; Michel, F. M.; Martin, C. D.; Yu, T.; Lee, P. L.; Chupas, P. J.; Shastri, S. D.; Guo, Q.; Parise, J. B.; Stony Brook Univ.; BNL

    2007-06-01T23:59:59.000Z

    The method of high-energy total elastic X-ray scattering to determine the atomic structure of nanocrystalline, highly disordered, and amorphous materials is presented. The current state of the technique, its potential, and limitations are discussed with two successful studies on the pressure induced phase transition in mackinawite (FeS) and the high-pressure behavior of liquid gallium.

  14. Studies of Local and Intermediate Range Structure in Crystalline and Amorphous Materials at High Pressure Using High-Energy X-rays

    SciTech Connect (OSTI)

    Ehm,L.; Antao, S.; Chen, J.; Locke, D.; Michel, F.; Martin, D.; Yu, T.; Parise, J.; Lee, P.; et al.

    2007-01-01T23:59:59.000Z

    The method of high-energy total elastic X-ray scattering to determine the atomic structure of nanocrystalline, highly disordered, and amorphous materials is presented. The current state of the technique, its potential, and limitations are discussed with two successful studies on the pressure induced phase transition in mackinawite (FeS) and the high-pressure behavior of liquid gallium.

  15. Local Information

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flows andPress)Local

  16. High-power ELF radiation generated by modulated HF heating of the ionosphere can cause Earthquakes, Cyclones and localized heating

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    transmitter radiates a strong beam of high- frequency (HF) waves modulated at ELF. This HF heating modulates-frequency (HF) radiation in the megahertz range [7]. This heating modulates the electron's temperature in the D

  17. Reduction of Edge Localized Mode Intensity on DIII-D by On-demand triggering with High Frequency Pellet Injection and Implications for ITER

    SciTech Connect (OSTI)

    Baylor, Larry R [ORNL; Commaux, Nicolas JC [ORNL; Jernigan, T. C. [Oak Ridge National Laboratory (ORNL); Meitner, Steven J [ORNL; Combs, Stephen Kirk [ORNL; Isler, Ralph C [ORNL; Unterberg, Ezekial A [ORNL; Brooks, N. H. [General Atomics, San Diego; Evans, T.E. [General Atomics, San Diego; Leonard, A. W. [General Atomics; Osborne, T. H. [General Atomics; Parks, P. B. [General Atomics; Snyder, P. B. [General Atomics; Strait, E. J. [General Atomics; Fenstermacher, M. E. [Lawrence Livermore National Laboratory (LLNL); Lasnier, C. J. [Lawrence Livermore National Laboratory (LLNL); Moyer, R.A. [University of California, San Diego; Loarte, A. [ITER Organization, Cadarache, France; Huijsmans, G.T.A. [ITER Organization, Saint Paul Lez Durance, France; Futantani, S. [ITER Organization, Saint Paul Lez Durance, France

    2013-01-01T23:59:59.000Z

    The injection of small deuterium pellets at high repetition rates up to 12 the natural edge localized mode (ELM) frequency has been used to trigger high-frequency ELMs in otherwise low natural ELM frequency H-mode deuterium discharges in the DIII-D tokamak [J. L. Luxon and L. G. Davis, Fusion Technol. 8, 441 (1985)]. The resulting pellet-triggered ELMs result in up to 12 lower energy and particle fluxes to the divertor than the natural ELMs. The plasma global energy confinement and density are not strongly affected by the pellet perturbations. The plasma core impurity density is strongly reduced with the application of the pellets. These experiments were performed with pellets injected from the low field side pellet in plasmas designed to match the ITER baseline configuration in shape and normalized operation with input heating power just above the H-mode power threshold. Nonlinear MHD simulations of the injected pellets show that destabilization of ballooning modes by a local pressure perturbation is responsible for the pellet ELM triggering. This strongly reduced ELM intensity shows promise for exploitation in ITER to control ELM size while maintaining high plasma purity and performance.

  18. Reduction of edge localized mode intensity on DIII-D by on-demand triggering with high frequency pellet injection and implications for ITER

    SciTech Connect (OSTI)

    Baylor, L. R.; Commaux, N.; Jernigan, T. C.; Meitner, S. J.; Combs, S. K.; Isler, R. C.; Unterberg, E. A. [Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, Tennessee 37830-6169 (United States)] [Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, Tennessee 37830-6169 (United States); Brooks, N. H.; Evans, T. E.; Leonard, A. W.; Osborne, T. H.; Parks, P. B.; Snyder, P. B.; Strait, E. J. [General Atomics, PO Box 85608, San Diego, California 92186-5608 (United States)] [General Atomics, PO Box 85608, San Diego, California 92186-5608 (United States); Fenstermacher, M. E.; Lasnier, C. J. [Lawrence Livermore National Laboratory, 700 East Ave, Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, 700 East Ave, Livermore, California 94550 (United States); Moyer, R. A. [University of California San Diego, 9500 Gilman Dr., La Jolla, California 92093-0417 (United States)] [University of California San Diego, 9500 Gilman Dr., La Jolla, California 92093-0417 (United States); Loarte, A.; Huijsmans, G. T. A.; Futatani, S. [ITER Organization, Route de Vinon sur Verdon, 13115 St. Paul Lez Durance (France)] [ITER Organization, Route de Vinon sur Verdon, 13115 St. Paul Lez Durance (France)

    2013-08-15T23:59:59.000Z

    The injection of small deuterium pellets at high repetition rates up to 12× the natural edge localized mode (ELM) frequency has been used to trigger high-frequency ELMs in otherwise low natural ELM frequency H-mode deuterium discharges in the DIII-D tokamak [J. L. Luxon and L. G. Davis, Fusion Technol. 8, 441 (1985)]. The resulting pellet-triggered ELMs result in up to 12× lower energy and particle fluxes to the divertor than the natural ELMs. The plasma global energy confinement and density are not strongly affected by the pellet perturbations. The plasma core impurity density is strongly reduced with the application of the pellets. These experiments were performed with pellets injected from the low field side pellet in plasmas designed to match the ITER baseline configuration in shape and normalized ? operation with input heating power just above the H-mode power threshold. Nonlinear MHD simulations of the injected pellets show that destabilization of ballooning modes by a local pressure perturbation is responsible for the pellet ELM triggering. This strongly reduced ELM intensity shows promise for exploitation in ITER to control ELM size while maintaining high plasma purity and performance.

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

    SciTech Connect (OSTI)

    Ni, Pavel; Rauch, Albert

    2011-12-04T23:59:59.000Z

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

  20. Local changes of work function near rough features on Cu surfaces operated under high external electric field

    SciTech Connect (OSTI)

    Djurabekova, Flyura, E-mail: flyura.djurabekova@helsinki.fi; Ruzibaev, Avaz; Parviainen, Stefan [Helsinki Institute of Physics and Department of Physics, University of Helsinki, P.O. Box 43, FI-00014 Helsinki (Finland); Holmström, Eero [Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki (Finland); Department of Earth Sciences, Faculty of Maths and Physical Sciences, UCL Earth Sciences, Gower Street, London WC1E 6BT (United Kingdom); Hakala, Mikko [Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki (Finland)

    2013-12-28T23:59:59.000Z

    Metal surfaces operated under high electric fields produce sparks even if they are held in ultra high vacuum. In spite of extensive research on the topic of vacuum arcs, the mystery of vacuum arc origin still remains unresolved. The indications that the sparking rates depend on the material motivate the research on surface response to extremely high external electric fields. In this work by means of density-functional theory calculations we analyze the redistribution of electron density on (100) Cu surfaces due to self-adatoms and in presence of high electric fields from ?1?V/nm up to ?2?V/nm (?1 to ?2 GV/m, respectively). We also calculate the partial charge induced by the external field on a single adatom and a cluster of two adatoms in order to obtain reliable information on charge redistribution on surface atoms, which can serve as a benchmarking quantity for the assessment of the electric field effects on metal surfaces by means of molecular dynamics simulations. Furthermore, we investigate the modifications of work function around rough surface features, such as step edges and self-adatoms.

  1. Strong carrier localization and diminished quantum-confined Stark effect in ultra-thin high-indium-content InGaN quantum wells with violet light emission

    SciTech Connect (OSTI)

    Ko, Suk-Min; Kwack, Ho-Sang; Park, Chunghyun; Yoo, Yang-Seok; Cho, Yong-Hoon, E-mail: yhc@kaist.ac.kr [Department of Physics and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)] [Department of Physics and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Kwon, Soon-Yong [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of) [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); School of Mechanical and Advanced Materials Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798 (Korea, Republic of); Jin Kim, Hee; Yoon, Euijoon, E-mail: eyoon@snu.ac.kr [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Si Dang, Le [Nanophysics and Semiconductors, CEA-CNRS-UJF Group, Institut Néel, CNRS Grenoble, 25 rue des Martyrs, 38042 Grenoble Cedex 9 (France)] [Nanophysics and Semiconductors, CEA-CNRS-UJF Group, Institut Néel, CNRS Grenoble, 25 rue des Martyrs, 38042 Grenoble Cedex 9 (France)

    2013-11-25T23:59:59.000Z

    Here, we report on the optical and structural characteristics of violet-light-emitting, ultra-thin, high-Indium-content (UTHI) InGaN/GaN multiple quantum wells (MQWs), and of conventional low-In-content MQWs, which both emit at similar emission energies though having different well thicknesses and In compositions. The spatial inhomogeneity of In content, and the potential fluctuation in high-efficiency UTHI MQWs were compared to those in the conventional low-In-content MQWs. We conclude that the UTHI InGaN MQWs are a promising structure for achieving better quantum efficiency in the visible and near-ultraviolet spectral range, owing to their strong carrier localization and reduced quantum-confined Stark effect.

  2. A new 3D parallel high resolution electromagnetic nonlinear inversion based on new global magnetic integral and local differential decomposition (GILD)

    SciTech Connect (OSTI)

    Xie, G.; Li, J. [Lawrence Berkeley National Lab., CA (United States). Earth Sciences Div.

    1997-05-01T23:59:59.000Z

    A new 3D electromagnetic modeling and nonlinear inversion algorithm is presented based on global integral and local differential equations decomposition (GILD). The GILD parallel nonlinear inversion algorithm consists of five parts: (1) the domain is decomposed into subdomain SI and subdomain SII; (2) a new global magnetic integral equation in SI and the local magnetic differential equations IN SII will be used together to obtain the magnetic field in the modeling step; (3) the new global magnetic integral Jacobian equation in SI and the local magnetic differential Jacobian equations in SII will be used together to update the electric conductivity and permittivity from the magnetic field data in the inversion step; (4) the subdomain SII can naturally and uniformly be decomposed into 2{sup n} smaller sub-cubic-domains; the sparse matrix in each sub-cubic-domain can be eliminated separately, in parallel; (5) a new parallel multiple hierarchy substructure algorithm will be used to solve the smaller full matrices in SI, in parallel. The applications of the new 3D parallel GILD EM modeling and nonlinear inversion algorithm and software are: (1) to create high resolution controlled-source electric conductivity and permittivity imaging for interpreting electromagnetic field data acquired from cross hole, surface to borehole, surface to surface, single hole, and multiple holes; (2) to create the magnetotelluric high resolution imaging from the surface impedance and field data. The new GILD parallel nonlinear inversion will be a 3D/2.5D powerful imaging tool for the oil geophysical exploration and environmental remediation and monitoring.

  3. Trade-off between morphology, extended defects, and compositional fluctuation induced carrier localization in high In-content InGaN films

    SciTech Connect (OSTI)

    Ju, James; Loitsch, Bernhard; Stettner, Thomas; Schuster, Fabian; Stutzmann, Martin; Koblmüller, Gregor, E-mail: Gregor.Koblmueller@wsi.tum.de [Walter Schottky Institut and Physik Department, Technische Universität München, Garching 85748 (Germany)

    2014-08-07T23:59:59.000Z

    We elucidate the role of growth parameters (III/N flux ratio, temperature T{sub G}) on the morphological and structural properties, as well as compositional homogeneity and carrier localization effects of high In-content (x(In)?>?0.75) In–polar InGaN films grown by plasma–assisted molecular beam epitaxy (PAMBE). Variations in III/N flux ratio evidence that higher excess of In yields higher threading dislocation densities as well as larger compositional inhomogeneity as measured by x-ray diffraction. Most interestingly, by variation of growth temperature T{sub G} we find a significant trade-off between improved morphological quality and compositional homogeneity at low–T{sub G} (?450–550?°C) versus improved threading dislocation densities at high–T{sub G} (?600–630?°C), as exemplified for InGaN films with x(In)?=?0.9. The enhanced compositional homogeneity mediated by low–T{sub G} growth is confirmed by systematic temperature-dependent photoluminescence (PL) spectroscopy data, such as lower PL peakwidths, >5× higher PL efficiency (less temperature-induced quenching) and a distinctly different temperature-dependent S-shape behavior of the PL peak energy. From these, we find that the carrier localization energy is as low as ?20?meV for low–T{sub G} grown films (T{sub G}?=?550?°C), while it rises to ?70?meV for high–T{sub G} grown films (T{sub G}?=?630?°C) right below the onset of In–N dissociation. These findings point out that for the kinetically limited metal-rich PAMBE growth of high In-content InGaN a III/N flux ratio of ?1 and low-to-intermediate T{sub G} are required to realize optically more efficient materials.

  4. High magnetic field studies of charged exciton localization in GaAs/Al{sub x}Ga{sub 1?x}As quantum wells

    SciTech Connect (OSTI)

    Jadczak, J.; Bryja, L., E-mail: leszek.bryja@pwr.edu.pl; Ryczko, K.; Kubisa, M.; Wójs, A. [Institute of Physics, Wroc?aw University of Technology, 50-370 Wroclaw (Poland); Potemski, M. [Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, Grenoble (France); Liu, F. [Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund (Germany); Yakovlev, D. R.; Bayer, M. [Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund (Germany); Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation); Nicoll, C. A.; Farrer, I.; Ritchie, D. A. [Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 OHE (United Kingdom)

    2014-09-15T23:59:59.000Z

    We report on low temperature, polarization resolved, high magnetic field (up to 23?T) photoluminescence experiments on high mobility asymmetric GaAs quantum wells. At high magnetic fields, we detect two strong emission lines of the neutral and positively charged excitons (X and X{sup +}) and a series of weaker lines of the excitons bound to ionized acceptors (AX{sup ?}). From polarization energy splittings of these lines, we determine the hole Landé factors (g{sub h}) of different complexes. For X and X{sup +}, g{sub h} initially grows with magnetic field and then saturates at g{sub h}?=?0.88 and 1.55, respectively; for AX{sup ?}'s, g{sub h} begins from a high value (from 6 to 11 at zero field) and decreases with the field growth. This contrasting behavior is traced to the structure of valence band Landau levels, calculated numerically in the Luttinger model, beyond axial approximation. This points to the coexistence (in the same well) of mobile X and X{sup +} with localized and interface-pressed AX{sup ?} states.

  5. Feasibility of high-dose-rate brachytherapy salvage for local prostate cancer recurrence after radiotherapy: University of California-San Francisco experience

    SciTech Connect (OSTI)

    Lee, Brian [Department of Radiation Oncology, University of California-San Francisco, San Francisco, CA (United States); Shinohara, Katsuto [Department of Urology, University of California-San Francisco, San Francisco, CA (United States); Weinberg, Vivian [Comprehensive Cancer Center Biostatistics Core, University of California-San Francisco, San Francisco, CA (United States); Gottschalk, Alexander R. [Department of Radiation Oncology, University of California-San Francisco, San Francisco, CA (United States); Pouliot, Jean [Department of Radiation Oncology, University of California-San Francisco, San Francisco, CA (United States); Roach, Mack [Department of Radiation Oncology, University of California-San Francisco, San Francisco, CA (United States); Hsu, I.-Chow [Department of Radiation Oncology, University of California-San Francisco, San Francisco, CA (United States)]. E-mail: Hsu@radonc17.ucsf.edu

    2007-03-15T23:59:59.000Z

    Purpose: The aim of this study was to evaluate the feasibility and safety of salvage high-dose-rate (HDR) brachytherapy for locally recurrent prostate cancer after external beam radiotherapy (EBRT). Methods and Materials: We retrospectively analyzed 21 consecutively accrued patients undergoing salvage HDR brachytherapy for locally recurrent prostate cancer after EBRT between November 1998 and December 2005. After pathologic confirmation of locally recurrent disease, all patients were treated with 36 Gy in six fractions using two transrectal ultrasound-guided HDR prostate implants, separated by 1 week. Eleven patients received neoadjuvant hormonal therapy immediately presalvage, whereas none received adjuvant hormonal therapy postsalvage. Median follow-up time from recurrence was 18.7 months (range, 6-84 months). Determination of subsequent biochemical failure after brachytherapy was based on the definition by the American Society for Therapeutic Radiology and Oncology. Results: Based on the Common Terminology Criteria for Adverse Events (CTCAE version 3), 18 patients reported Grade 1 to 2 genitourinary symptoms by 3 months postsalvage. Three patients developed Grade 3 genitourinary toxicity. Maximum observed gastrointestinal toxicity was Grade 2; all cases spontaneously resolved. The 2-year Kaplan-Meier estimate of biochemical control after recurrence was 89%. Thirteen patients have achieved a PSA nadir {<=}0.1 ng/ml, but at the time of writing this endpoint has not yet been reached for all patients. All patients are alive; however 2 have experienced biochemical failure, both with PSA nadirs {>=}1, and have subsequently been found to have distant metastases. Conclusions: Salvage HDR prostate brachytherapy appears to be feasible and effective.

  6. Classical dynamics and localization of resonances in the high energy region of the hydrogen atom in crossed fields

    E-Print Network [OSTI]

    Frank Schweiner; Jörg Main; Holger Cartarius; Günter Wunner

    2014-12-10T23:59:59.000Z

    When superimposing the potentials of external fields on the Coulomb potential of the hydrogen atom a saddle point appears, which is called the Stark saddle point. For energies slightly above the saddle point energy one can find classical orbits, which are located in the vicinity of this point. We follow those so-called quasi-Penning orbits to high energies and field strengths observing structural changes and uncovering their bifurcation behavior. By plotting the stability behavior of those orbits against energy and field strength the appearance of a stability apex is reported. A cusp bifurcation, located in the vicinity of the apex, will be investigated in detail. In this cusp bifurcation another orbit of similar shape is found, which becomes completely stable in the observed region of positive energy, i.e., in a region of parameter space, where the Kepler-like orbits located around the nucleus are already unstable. By quantum-mechanically exact calculations we prove the existence of signatures in quantum spectra belonging to those orbits. Husimi distributions are used to compare quantum-Poincar\\'e sections with the extension of the classical torus structure around the orbits. Since periodic orbit theory predicts that each classical periodic orbit contributes an oscillating term to photoabsorption spectra, we finally give an estimation for future experiments, which could verify the existence of the stable orbits.

  7. Analysis of high–dose rate brachytherapy dose distribution resemblance in CyberKnife hypofractionated treatment plans of localized prostate cancer

    SciTech Connect (OSTI)

    Sudahar, H., E-mail: h.sudahar@gmail.com [Department of Radiotherapy, Apollo Speciality Hospital, Chennai (India); Kurup, P.G.G.; Murali, V.; Mahadev, P. [Department of Radiotherapy, Apollo Speciality Hospital, Chennai (India); Velmurugan, J. [Department of Medical Physics, Anna University, Chennai (India)

    2013-01-01T23:59:59.000Z

    The present study is to analyze the CyberKnife hypofractionated dose distribution of localized prostate cancer in terms of high–dose rate (HDR) brachytherapy equivalent doses to assess the degree of HDR brachytherapy resemblance of CyberKnife dose distribution. Thirteen randomly selected localized prostate cancer cases treated using CyberKnife with a dose regimen of 36.25 Gy in 5 fractions were considered. HDR equivalent doses were calculated for 30 Gy in 3 fractions of HDR brachytherapy regimen. The D{sub 5%} of the target in the CyberKnife hypofractionation was 41.57 ± 2.41 Gy. The corresponding HDR fractionation (3 fractions) equivalent dose was 32.81 ± 1.86 Gy. The mean HDR fractionation equivalent dose, D{sub 98%}, was 27.93 ± 0.84 Gy. The V{sub 100%} of the prostate target was 95.57% ± 3.47%. The V{sub 100%} of the bladder and the rectum were 717.16 and 79.6 mm{sup 3}, respectively. Analysis of the HDR equivalent dose of CyberKnife dose distribution indicates a comparable resemblance to HDR dose distribution in the peripheral target doses (D{sub 98%} to D{sub 80%}) reported in the literature. However, there is a substantial difference observed in the core high-dose regions especially in D{sub 10%} and D{sub 5%}. The dose fall-off within the OAR is also superior in reported HDR dose distribution than the HDR equivalent doses of CyberKnife.

  8. Long-term Survival and Toxicity in Patients Treated With High-Dose Intensity Modulated Radiation Therapy for Localized Prostate Cancer

    SciTech Connect (OSTI)

    Spratt, Daniel E.; Pei, Xin; Yamada, Josh; Kollmeier, Marisa A.; Cox, Brett [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Zelefsky, Michael J., E-mail: zelefskm@mskcc.org [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)

    2013-03-01T23:59:59.000Z

    Purpose: To report long-term survival and toxicity outcomes with the use of high-dose intensity modulated radiation therapy (IMRT) to 86.4 Gy for patients with localized prostate cancer. Methods and Materials: Between August 1997 and December 2008, 1002 patients were treated to a dose of 86.4 Gy using a 5-7 field IMRT technique. Patients were stratified by prognostic risk group based on National Comprehensive Cancer Network risk classification criteria. A total of 587 patients (59%) were treated with neoadjuvant and concurrent androgen deprivation therapy. The median follow-up for the entire cohort was 5.5 years (range, 1-14 years). Results: For low-, intermediate-, and high-risk groups, 7-year biochemical relapse-free survival outcomes were 98.8%, 85.6%, and 67.9%, respectively (P<.001), and distant metastasis-free survival rates were 99.4%, 94.1%, and 82.0% (P<.001), respectively. On multivariate analysis, T stage (P<.001), Gleason score (P<.001), and >50% of initial biopsy positive core (P=.001) were predictive for distant mestastases. No prostate cancer-related deaths were observed in the low-risk group. The 7-year prostate cancer-specific mortality (PCSM) rates, using competing risk analysis for intermediate- and high-risk groups, were 3.3% and 8.1%, respectively (P=.008). On multivariate analysis, Gleason score (P=.004), percentage of biopsy core positivity (P=.003), and T-stage (P=.033) were predictive for PCSM. Actuarial 7-year grade 2 or higher late gastrointestinal and genitourinary toxicities were 4.4% and 21.1%, respectively. Late grade 3 gastrointestinal and genitourinary toxicity was experienced by 7 patients (0.7%) and 22 patients (2.2%), respectively. Of the 427 men with full potency at baseline, 317 men (74%) retained sexual function at time of last follow-up. Conclusions: This study represents the largest cohort of patients treated with high-dose radiation to 86.4 Gy, using IMRT for localized prostate cancer, with the longest follow-up to date. Our findings indicate that this treatment results in excellent clinical outcomes with acceptable toxicity.

  9. Local Transportation

    E-Print Network [OSTI]

    Local Transportation. Transportation from the Airport to Hotel. There are two types of taxi companies that operate at the airport: special and regular taxis (

  10. Sunitinib Plus Androgen Deprivation and Radiation Therapy for Patients With Localized High-Risk Prostate Cancer: Results From a Multi-institutional Phase 1 Study

    SciTech Connect (OSTI)

    Corn, Paul G., E-mail: pcorn@mdanderson.org [Department of Genitourinary Medical Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States); Song, Danny Y. [Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland (United States)] [Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland (United States); Heath, Elisabeth; Maier, Jordan [Karmanos Cancer Institute, Wayne State University, Detroit, Michigan (United States)] [Karmanos Cancer Institute, Wayne State University, Detroit, Michigan (United States); Meyn, Raymond [Department of Experimental Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)] [Department of Experimental Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States); Kuban, Deborah [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States); DePetrillo, Thomas A. [Department of Radiation Oncology, Tufts Medical Center, Boston, Massachusetts (United States)] [Department of Radiation Oncology, Tufts Medical Center, Boston, Massachusetts (United States); Mathew, Paul, E-mail: pmathew@tuftsmedicalcenter.org [Department of Hematology-Oncology, Tufts Medical Center, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)] [Department of Hematology-Oncology, Tufts Medical Center, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)

    2013-07-01T23:59:59.000Z

    Purpose: To evaluate the feasibility of administering sunitinib in combination with androgen deprivation therapy and external-beam intensity modulated radiation therapy (XRT) in patients with localized high-risk prostate cancer. Methods and Materials: Seventeen men with localized adenocarcinoma of the prostate with cT2c-cT4 or Gleason 8-10 or prostate-specific antigen >20 ng/mL received initial androgen deprivation (leuprolide 22.5 mg every 12 weeks plus oral bicalutamide 50 mg daily) for 4-8 weeks before oral sunitinib 12.5, 25, or 37.5 mg daily for 4 weeks as lead-in, then concurrently with and 4 weeks after XRT (75.6 Gy in 42 fractions to prostate and seminal vesicles). A 3+3 sequential dose-escalation design was used to assess the frequency of dose-limiting toxicity (DLT) and establish a maximal tolerated dose of sunitinib. Results: Sunitinib at 12.5- and 25-mg dose levels was well tolerated. The first 4 patients enrolled at 37.5 mg experienced a DLT during lead-in, and a drug interaction between sunitinib and bicalutamide was suspected. The protocol was revised and concurrent bicalutamide omitted. Of the next 3 patients enrolled at 37.5 mg, 2 of 3 receiving concurrent therapy experienced DLTs during radiation: grade 3 diarrhea and grade 3 proctitis, respectively. Only 1 of 7 patients completed sunitinib at 37.5 mg daily, whereas 3 of 3 patients (25 mg as starting dose) and 3 of 4 patients (25 mg as reduced dose) completed therapy. Conclusions: The feasibility of combined vascular endothelial growth factor receptor (VEGFR)/platelet-derived growth factor receptor (PDGFR) inhibitor therapy, androgen deprivation, and radiation therapy for prostate cancer was established. Using a daily dosing regimen with lead-in, concurrent, and post-XRT therapy, the recommended phase 2 dose of sunitinib is 25 mg daily.

  11. Improved Clinical Outcomes With High-Dose Image Guided Radiotherapy Compared With Non-IGRT for the Treatment of Clinically Localized Prostate Cancer

    SciTech Connect (OSTI)

    Zelefsky, Michael J., E-mail: Zelefskm@mskcc.org [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Kollmeier, Marisa; Cox, Brett; Fidaleo, Anthony; Sperling, Dahlia; Pei, Xin [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Carver, Brett; Coleman, Jonathan [Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)] [Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Lovelock, Michael; Hunt, Margie [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)] [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)

    2012-09-01T23:59:59.000Z

    Purpose: To compare toxicity profiles and biochemical tumor control outcomes between patients treated with high-dose image-guided radiotherapy (IGRT) and high-dose intensity-modulated radiotherapy (IMRT) for clinically localized prostate cancer. Materials and Methods: Between 2008 and 2009, 186 patients with prostate cancer were treated with IGRT to a dose of 86.4 Gy with daily correction of the target position based on kilovoltage imaging of implanted prostatic fiducial markers. This group of patients was retrospectively compared with a similar cohort of 190 patients who were treated between 2006 and 2007 with IMRT to the same prescription dose without, however, implanted fiducial markers in place (non-IGRT). The median follow-up time was 2.8 years (range, 2-6 years). Results: A significant reduction in late urinary toxicity was observed for IGRT patients compared with the non-IGRT patients. The 3-year likelihood of grade 2 and higher urinary toxicity for the IGRT and non-IGRT cohorts were 10.4% and 20.0%, respectively (p = 0.02). Multivariate analysis identifying predictors for grade 2 or higher late urinary toxicity demonstrated that, in addition to the baseline Internatinoal Prostate Symptom Score, IGRT was associated with significantly less late urinary toxicity compared with non-IGRT. The incidence of grade 2 and higher rectal toxicity was low for both treatment groups (1.0% and 1.6%, respectively; p = 0.81). No differences in prostate-specific antigen relapse-free survival outcomes were observed for low- and intermediate-risk patients when treated with IGRT and non-IGRT. For high-risk patients, a significant improvement was observed at 3 years for patients treated with IGRT compared with non-IGRT. Conclusions: IGRT is associated with an improvement in biochemical tumor control among high-risk patients and a lower rate of late urinary toxicity compared with high-dose IMRT. These data suggest that, for definitive radiotherapy, the placement of fiducial markers and daily tracking of target positioning may represent the preferred mode of external-beam radiotherapy delivery for the treatment of prostate cancer.

  12. Local Universities

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenter (LMI-EFRC)Department ofchampionshipLocal

  13. Local Information

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flows andPress)

  14. Quantum Locality?

    SciTech Connect (OSTI)

    Stapp, Henry

    2011-11-10T23:59:59.000Z

    Robert Griffiths has recently addressed, within the framework of a ‘consistent quantum theory’ (CQT) that he has developed, the issue of whether, as is often claimed, quantum mechanics entails a need for faster-than-light transfers of information over long distances. He argues, on the basis of his examination of certain arguments that claim to demonstrate the existence of such nonlocal influences, that such influences do not exist. However, his examination was restricted mainly to hidden-variable-based arguments that include in their premises some essentially classical-physics-type assumptions that are fundamentally incompatible with the precepts of quantum physics. One cannot logically prove properties of a system by attributing to the system properties alien to that system. Hence Griffiths’ rejection of hidden-variable-based proofs is logically warranted. Griffiths mentions the existence of a certain alternative proof that does not involve hidden variables, and that uses only macroscopically described observable properties. He notes that he had examined in his book proofs of this general kind, and concluded that they provide no evidence for nonlocal influences. But he did not examine the particular proof that he cites. An examination of that particular proof by the method specified by his ‘consistent quantum theory’ shows that the cited proof is valid within that restrictive framework. This necessary existence, within the ‘consistent’ framework, of long range essentially instantaneous influences refutes the claim made by Griffiths that his ‘consistent’ framework is superior to the orthodox quantum theory of von Neumann because it does not entail instantaneous influences. An added section responds to Griffiths’ reply, which cites a litany of ambiguities that seem to restrict, devastatingly, the scope of his CQT formalism, apparently to buttress his claim that my use of that formalism to validate the nonlocality theorem is flawed. But the vagaries that he cites do not upset the proof in question. It is show here in detail why the precise statement of this theorem justifies the specified application of CQT. It is also shown, in response to his challenge, why a putative proof of locality that he has proposed is not valid.

  15. Monotonic Local Decay Estimates

    E-Print Network [OSTI]

    Avy Soffer

    2011-10-29T23:59:59.000Z

    For the Hamiltonian operator H = -{\\Delta}+V(x) of the Schr\\"odinger Equation with a repulsive potential, the problem of local decay is considered. It is analyzed by a direct method, based on a new, L^2 bounded, propagation observable. The resulting decay estimate, is in certain cases monotonic in time, with no "Quantum Corrections". This method is then applied to some examples in one and higher dimensions. In particular the case of the Wave Equation on a Schwarzschild manifold is redone: Local decay, stronger than the known ones are proved (minimal loss of angular derivatives and lower order of radial derivatives of initial data). The method developed here can be an alternative in some cases to the Morawetz type estimates, with L^2-multipliers replacing the first order operators. It provides an alternative to Mourre's method, by including thresholds and high energies.

  16. Non-local Quantum Electrodynamics; 2, Possibility of correlated 2n-photon absorption in gases leading to VERY High frequency spontaneous emission and Very high order Harmonic Generation

    E-Print Network [OSTI]

    Dastidar, K R; Dastidar, Krishna Rai

    2002-01-01T23:59:59.000Z

    In a recent work [Mod. Phys. Lett A13, p-1265 (1998)] we expounded a non-local Quantum Electrodynamics (QED) which predicted a linear two-photon absorption by an atom placed in a laser field of appropriate intensity and frequency. In this paper we extend our earlier work to show that the theory allows for linear 2n-photon absorption by gaseous matter where, under suitable conditions, n may literally run upto thousands. The consequences of this extension of the theory are outlined and predictions are made which may be verified in laboratories.

  17. Locally Led Conservation The Local Work Group

    E-Print Network [OSTI]

    Grants ­ Conservation Stewardship Program ­ Environmental Quality Incentive Program ­ Farm & Ranch Lands1 Locally Led Conservation & The Local Work Group Mark Habiger NRCS #12;2 What Is "Locally Led Conservation"? · Community Stakeholders ­ 1. Assessing their natural resource conservation needs ­ 2. Setting

  18. Incidence of Secondary Cancer Development After High-Dose Intensity-Modulated Radiotherapy and Image-Guided Brachytherapy for the Treatment of Localized Prostate Cancer

    SciTech Connect (OSTI)

    Zelefsky, Michael J., E-mail: Zelefskm@mskcc.org [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Housman, Douglas M.; Pei Xin; Alicikus, Zumre; Magsanoc, Juan Martin [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Dauer, Lawrence T.; St Germain, Jean [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Yamada, Yoshiya; Kollmeier, Marisa; Cox, Brett [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Zhang Zhigang [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)

    2012-07-01T23:59:59.000Z

    Purpose: To report the incidence and excess risk of second malignancy (SM) development compared with the general population after external beam radiotherapy (EBRT) and brachytherapy to treat prostate cancer. Methods and Materials: Between 1998 and 2001, 1,310 patients with localized prostate cancer were treated with EBRT (n = 897) or brachytherapy (n = 413). We compared the incidence of SMs in our patients with that of the general population extracted from the National Cancer Institute's Surveillance, Epidemiology, and End Results data set combined with the 2000 census data. Results: The 10-year likelihood of SM development was 25% after EBRT and 15% after brachytherapy (p = .02). The corresponding 10-year likelihood for in-field SM development in these groups was 4.9% and 1.6% (p = .24). Multivariate analysis showed that EBRT vs. brachytherapy and older age were the only significant predictors for the development of all SMs (p = .037 and p = .030), with a trend for older patients to develop a SM. The increased incidence of SM for EBRT patients was explained by the greater incidence of skin cancer outside the radiation field compared with that after brachytherapy (10.6% and 3.3%, respectively, p = .004). For the EBRT group, the 5- and 10-year mortality rate was 1.96% and 5.1% from out-of field cancer, respectively; for in-field SM, the corresponding mortality rates were 0.1% and 0.7%. Among the brachytherapy group, the 5- and 10-year mortality rate related to out-of field SM was 0.8% and 2.7%, respectively. Our observed SM rates after prostate RT were not significantly different from the cancer incidence rates in the general population. Conclusions: Using modern sophisticated treatment techniques, we report low rates of in-field bladder and rectal SM risks after prostate cancer RT. Furthermore, the likelihood of mortality secondary to a SM was unusual. The greater rate of SM observed with EBRT vs. brachytherapy was related to a small, but significantly increased, number of skin cancers in the EBRT patients compared with that of the general population.

  19. Interferometric hydrofracture microseism localization using neighboring fracture

    E-Print Network [OSTI]

    Poliannikov, Oleg V.

    2011-05-19T23:59:59.000Z

    Hydraulic fracturing is the process of injecting high-pressure fluids into a reservoir to induce fractures and thus improve reservoir productivity. Microseismic event localization is used to locate created fractures. ...

  20. Interferometric hydrofracture microseism localization using neighboring fracture

    E-Print Network [OSTI]

    Poliannikov, Oleg V.

    Hydraulic fracturing is the process of injecting high-pressure fluids into a reservoir to induce fractures and thus improve reservoir productivity. Microseismic event localization is used to locate created fractures. ...

  1. A Library for Locally Weighted Projection Regression 

    E-Print Network [OSTI]

    Klanke, Stefan; Vijayakumar, Sethu; Schaal, Stefan

    2008-01-01T23:59:59.000Z

    In this paper we introduce an improved implementation of locally weighted projection regression (LWPR), a supervised learning algorithm that is capable of handling high-dimensional input data. As the key features, our ...

  2. Local Incentives (Massachusetts)

    Broader source: Energy.gov [DOE]

    The Massachusetts Office of Business Development helps companies to identify communities interested in offering locally-negotiated incentives, such as Tax Increment Financing (TIF), Special Tax...

  3. State and Local Incentives

    Broader source: Energy.gov [DOE]

    To help you make energy efficiency improvements in your commercial building, your state and/or local community might offer incentives or have special programs.

  4. Local regulation of immigration

    E-Print Network [OSTI]

    Appleby, Clare A.

    2009-01-01T23:59:59.000Z

    Kristina M. 2007. “Local Illegal Immigration Relief ActPennsylvania. 2006. “Illegal Alien Immigration Relief Act. ”The Bill of Rights Protects Illegal Aliens” In Immigration

  5. Local government and demand-side bidding

    SciTech Connect (OSTI)

    Vine, E.

    1990-12-01T23:59:59.000Z

    As part of Lawrence Berkeley Laboratory's (LBL) technical assistance to the Sustainable City Project, the issue of DSM bidding was examined as a possible option for local government. The recent interest and activity in DSM bidding around the country presents an opportunity for local government. Potential benefits for local government include increased installation of energy efficiency measures in municipal facilities and in the community, economic development, an additional source of revenue to help pay for municipal programs (including additional conservation efforts), and an enhanced local image. Local government will most likely participate in DSM bidding as a customer or as a client of an energy service company (ESCO). The exact role will depend on local government's response to key issues associated with DSM bidding, such as performance guarantees, quality assurance procedures (measuring savings and providing financial security), and the administrative burden. In addition, local government will have to weigh the advantages and disadvantages of working with an ESCO. While local government has not yet participated in DSM bidding, local government is in a unique position to take advantage of energy efficiency opportunities as owner-operators of municipal facilities which consume significant amounts of energy, planners and regulators of new development, and general providers of services and assistance to their communities. Furthermore, local governments have lower risks (in terms of program success) than small businesses, and local governments' credibility and experience in dealing with customers may reduce high transaction costs associated with DSM bidding. Despite these advantages, local governments should take a cautious approach in participating in DSM bidding processes, and should carefully examine other strategies for promoting energy efficiency (including participation in conventional utility programs) prior to participating in DSM bidding.

  6. High School Students from Oakland, San Ramon Tour NERSC

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

    Local High School Students Tour NERSC Local High School Students Tour NERSC Outreach educates students about careers in scientific computing February 17, 2015 Oaktech-bashor.jpg...

  7. Local Public Finance

    E-Print Network [OSTI]

    Quigley, John M.

    2008-01-01T23:59:59.000Z

    1959. The Theory of Public Finance. New York: McGraw-Hill.T. 2003. School finance, spatial income segregation, and theJohn M. "local public finance." The New Palgrave Dictionary

  8. Local Public Finance

    E-Print Network [OSTI]

    Quigley, John M.

    2008-01-01T23:59:59.000Z

    24. How to cite this article Quigley, John M. "local publicEW P ALGRAVE ) By John M. Quigley May 2008 These papers arelocal public finance John M. Quigley From The New Palgrave

  9. Local Public Finance

    E-Print Network [OSTI]

    Quigley, John M.

    2008-01-01T23:59:59.000Z

    cite this article Quigley, John M. "local public finance."HE N EW P ALGRAVE ) By John M. Quigley May 2008 These paperslocal public finance John M. Quigley From The New Palgrave

  10. Local entropy generation analysis

    SciTech Connect (OSTI)

    Drost, M.K.; White, M.D.

    1991-02-01T23:59:59.000Z

    Second law analysis techniques have been widely used to evaluate the sources of irreversibility in components and systems of components but the evaluation of local sources of irreversibility in thermal processes has received little attention. While analytical procedures for evaluating local entropy generation have been developed, applications have been limited to fluid flows with analytical solutions for the velocity and temperature fields. The analysis of local entropy generation can be used to evaluate more complicated flows by including entropy generation calculations in a computational fluid dynamics (CFD) code. The research documented in this report consists of incorporating local entropy generation calculations in an existing CFD code and then using the code to evaluate the distribution of thermodynamic losses in two applications: an impinging jet and a magnetic heat pump. 22 refs., 13 figs., 9 tabs.

  11. Orleans Local Coastal Program (Louisiana)

    Broader source: Energy.gov [DOE]

    The Local Coastal Programs Section provides technical assistance, guidance, and management to parishes in the development, approval, and implementation of local coastal programs (LCP). Once an LCP...

  12. Construction Local engineering.

    E-Print Network [OSTI]

    Construction Structures Geotech Local engineering. World-class engineers. World-class results. Constructed Facilities Division tti.tamu.edu #12;Expertise & Equipment ExpErtisE & EquipmEnt Created in 2005. The Texas Transportation Institute's (TTI's) Constructed Facilities Division represents a collaboration

  13. Local Safety Committee Engineering

    E-Print Network [OSTI]

    Saskatchewan, University of

    Minutes Local Safety Committee Name of Committee Engineering Worksite Mailing Address & Postal Code. Ventilation fume hoods V. Bendig and FMD report that an uninterrupted power supply will be attached to the ventilation control panel the week of Dec. 9. Action: T. Zintel and L. Harder will conduct a test the first

  14. Local microwave background radiation

    E-Print Network [OSTI]

    Domingos Soares

    2014-11-13T23:59:59.000Z

    An inquiry on a possible local origin for the Microwave Background Radiation is made. Thermal MBR photons are contained in a system called {\\it magnetic bottle} which is due to Earth magnetic field and solar wind particles, mostly electrons. Observational tests are anticipated.

  15. Lithium Local Pseudopotential Using

    E-Print Network [OSTI]

    Petta, Jason

    Lithium Local Pseudopotential Using DFT Sergio Orozco Student Advisor: Chen Huang Faculty Mentor Lithium LPS Test Lithium LPS #12;Density Functional Theory (DFT) Successful quantum mechanical approach (1979) #12;Building LPS for Lithium Create a LPS using NLPS density for Lithium Test LPS by comparing

  16. Enhanced local tomography

    DOE Patents [OSTI]

    Katsevich, Alexander J. (Los Alamos, NM); Ramm, Alexander G. (Manhattan, KS)

    1996-01-01T23:59:59.000Z

    Local tomography is enhanced to determine the location and value of a discontinuity between a first internal density of an object and a second density of a region within the object. A beam of radiation is directed in a predetermined pattern through the region of the object containing the discontinuity. Relative attenuation data of the beam is determined within the predetermined pattern having a first data component that includes attenuation data through the region. In a first method for evaluating the value of the discontinuity, the relative attenuation data is inputted to a local tomography function .function..sub..LAMBDA. to define the location S of the density discontinuity. The asymptotic behavior of .function..sub..LAMBDA. is determined in a neighborhood of S, and the value for the discontinuity is estimated from the asymptotic behavior of .function..sub..LAMBDA.. In a second method for evaluating the value of the discontinuity, a gradient value for a mollified local tomography function .gradient..function..sub..LAMBDA..epsilon. (x.sub.ij) is determined along the discontinuity; and the value of the jump of the density across the discontinuity curve (or surface) S is estimated from the gradient values.

  17. Local Field Topology behind Light Localization and Metamaterial Topological Transitions

    E-Print Network [OSTI]

    Tong, Jonathan K.

    We revisit the mechanisms governing the sub-wavelength spatial localization of light in surface plasmon polariton (SPP) modes by investigating both local and global features in optical powerflow at SPP frequencies. Close ...

  18. Local-probe studies of degradation of composite LiNi0.8Co 0.15Al0.05O2 cathodes in high-power lithium-ion cells

    E-Print Network [OSTI]

    Kostecki, Robert; McLarnon, Frank

    2004-01-01T23:59:59.000Z

    2 Cathodes in High-Power Lithium-Ion Cells Robert Kostecki *from commercial lithium-ion batteries. The extraordinaryat the surface of lithium-ion battery cathodes are underway.

  19. LYCEN 9721 May 1997 LOCAL NUCLEAR SLOPE and CURVATURE

    E-Print Network [OSTI]

    Boyer, Edmond

    LYCEN 9721 May 1997 LOCAL NUCLEAR SLOPE and CURVATURE in HIGH ENERGY pp and ¯pp ELASTIC SCATTERING The local nuclear slope B(s, t) = d dt ln dn(s,t) dt is reconstructed from the exper- imental angular agreement with the (non fitted) slope data, in particular for the evolution of B(s, t) with s as a function

  20. Local Water Quality Districts (Montana)

    Broader source: Energy.gov [DOE]

    This statute provides for the creation of local water quality districts to prevent and mitigate ground and surface water contamination. Each local water quality district may develop and implement a...

  1. Secure positioning and non-local correlations

    E-Print Network [OSTI]

    Muhammad Nadeem

    2015-03-31T23:59:59.000Z

    Recently, the problem of secure position-verification has been extensively analyzed in a formal notion where distant verifiers send encrypted challenge along with the decryption information to the prover. However, currently it is known that all the existing position-verification scheme are insecure and secure positioning is impossible. We propose here a different notion for position-verification where distant verifiers determine the actions of the prover through non-local correlations generated by local measurements at the provers site. The proposed scheme guarantees secure positioning even if the verifiers do not have any pre-shared data with the prover, position is the only credential of the prover. Our proposed scheme is secure in general and evades known quantum attacks based on instantaneous non-local computations in particular. The scheme enables verifiers to identify dishonest provers with very high probability , where n is the number of entangled pairs used.

  2. Termination Detection of Local Computations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Termination Detection of Local Computations Emmanuel Godard1 , Yves M´etivier2 and Gerard Tel3 1 is glob- ally finished. This paper investigates the problem of the detection of the termination of local computations. We define four types of termination detection: no detection, detection of the local termination

  3. Uncertainty Principle Respects Locality

    E-Print Network [OSTI]

    Dongsheng Wang

    2015-04-19T23:59:59.000Z

    The notion of nonlocality implicitly implies there might be some kind of spooky action at a distance in nature, however, the validity of quantum mechanics has been well tested up to now. In this work it is argued that the notion of nonlocality is physically improper, the basic principle of locality in nature is well respected by quantum mechanics, namely, the uncertainty principle. We show that the quantum bound on the Clauser, Horne, Shimony, and Holt (CHSH) inequality can be recovered from the uncertainty relation in a multipartite setting. We further argue that the super-quantum correlation demonstrated by the nonlocal box is not physically comparable with the quantum one. The origin of the quantum structure of nature still remains to be explained, some post-quantum theory which is more complete in some sense than quantum mechanics is possible and might not necessarily be a hidden variable theory.

  4. BurstMem: A High-Performance Burst Buffer System for Scientific Applications

    SciTech Connect (OSTI)

    Wang, Teng [Auburn University, Auburn, Alabama; Oral, H Sarp [ORNL; Wang, Yandong [Auburn University, Auburn, Alabama; Settlemyer, Bradley W [ORNL; Atchley, Scott [ORNL; Yu, Weikuan [Auburn University, Auburn, Alabama

    2014-01-01T23:59:59.000Z

    The growth of computing power on large-scale sys- tems requires commensurate high-bandwidth I/O system. Many parallel file systems are designed to provide fast sustainable I/O in response to applications soaring requirements. To meet this need, a novel system is imperative to temporarily buffer the bursty I/O and gradually flush datasets to long-term parallel file systems. In this paper, we introduce the design of BurstMem, a high- performance burst buffer system. BurstMem provides a storage framework with efficient storage and communication manage- ment strategies. Our experiments demonstrate that BurstMem is able to speed up the I/O performance of scientific applications by up to 8.5 on leadership computer systems.

  5. Local quantum ergodic conjecture

    E-Print Network [OSTI]

    E. Zambrano; W. P. Karel Zapfe; Alfredo M. Ozorio de Almeida

    2015-02-11T23:59:59.000Z

    The Quantum Ergodic Conjecture equates the Wigner function for a typical eigenstate of a classically chaotic Hamiltonian with a delta-function on the energy shell. This ensures the evaluation of classical ergodic expectations of simple observables, in agreement with Shnirelman's theorem, but this putative Wigner function violates several important requirements. Consequently, we transfer the conjecture to the Fourier transform of the Wigner function, that is, the chord function. We show that all the relevant consequences of the usual conjecture require only information contained within a small (Planck) volume around the origin of the phase space of chords: translations in ordinary phase space. Loci of complete orthogonality between a given eigenstate and its nearby translation are quite elusive for the Wigner function, but our local conjecture stipulates that their pattern should be universal for ergodic eigenstates of the same Hamiltonian lying within a classically narrow energy range. Our findings are supported by numerical evidence in a Hamiltonian exhibiting soft chaos. Heavily scarred eigenstates are remarkable counter-examples of the ergodic universal pattern.

  6. Performing a local barrier operation

    DOE Patents [OSTI]

    Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

    2014-03-04T23:59:59.000Z

    Performing a local barrier operation with parallel tasks executing on a compute node including, for each task: retrieving a present value of a counter; calculating, in dependence upon the present value of the counter and a total number of tasks performing the local barrier operation, a base value of the counter, the base value representing the counter's value prior to any task joining the local barrier; calculating, in dependence upon the base value and the total number of tasks performing the local barrier operation, a target value, the target value representing the counter's value when all tasks have joined the local barrier; joining the local barrier, including atomically incrementing the value of the counter; and repetitively, until the present value of the counter is no less than the target value of the counter: retrieving the present value of the counter and determining whether the present value equals the target value.

  7. Performing a local barrier operation

    DOE Patents [OSTI]

    Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

    2014-03-04T23:59:59.000Z

    Performing a local barrier operation with parallel tasks executing on a compute node including, for each task: retrieving a present value of a counter; calculating, in dependence upon the present value of the counter and a total number of tasks performing the local barrier operation, a base value, the base value representing the counter's value prior to any task joining the local barrier; calculating, in dependence upon the base value and the total number of tasks performing the local barrier operation, a target value of the counter, the target value representing the counter's value when all tasks have joined the local barrier; joining the local barrier, including atomically incrementing the value of the counter; and repetitively, until the present value of the counter is no less than the target value of the counter: retrieving the present value of the counter and determining whether the present value equals the target value.

  8. The Hidden Landscape of Localization

    E-Print Network [OSTI]

    Filoche, Marcel

    2011-01-01T23:59:59.000Z

    Wave localization occurs in all types of vibrating systems, in acoustics, mechanics, optics, or quantum physics. It arises either in systems of irregular geometry (weak localization) or in disordered systems (Anderson localization). We present here a general theory that explains how the system geometry and the wave operator interplay to give rise to a "landscape" that splits the system into weakly coupled subregions, and how these regions shape the spatial distribution of the vibrational eigenmodes. This theory holds in any dimension, for any domain shape, and for all operators deriving from an energy form. It encompasses both weak and Anderson localizations in the same mathematical frame and shows, in particular, that Anderson localization can be understood as a special case of weak localization in a very rough landscape.

  9. The Hidden Landscape of Localization

    E-Print Network [OSTI]

    Marcel Filoche; Svitlana Mayboroda

    2011-07-02T23:59:59.000Z

    Wave localization occurs in all types of vibrating systems, in acoustics, mechanics, optics, or quantum physics. It arises either in systems of irregular geometry (weak localization) or in disordered systems (Anderson localization). We present here a general theory that explains how the system geometry and the wave operator interplay to give rise to a "landscape" that splits the system into weakly coupled subregions, and how these regions shape the spatial distribution of the vibrational eigenmodes. This theory holds in any dimension, for any domain shape, and for all operators deriving from an energy form. It encompasses both weak and Anderson localizations in the same mathematical frame and shows, in particular, that Anderson localization can be understood as a special case of weak localization in a very rough landscape.

  10. Local Structure Analysis in $Ab$ $Initio$ Liquid Water

    E-Print Network [OSTI]

    Santra, Biswajit; Martelli, Fausto; Car, Roberto

    2015-01-01T23:59:59.000Z

    Within the framework of density functional theory, the inclusion of exact exchange and non-local van der Waals/dispersion (vdW) interactions is crucial for predicting a microscopic structure of ambient liquid water that quantitatively agrees with experiment. In this work, we have used the local structure index (LSI) order parameter to analyze the local structure in such highly accurate $ab$ $initio$ liquid water. At ambient conditions, the LSI probability distribution, P($I$), was unimodal with most water molecules characterized by more disordered high-density-like local environments. With thermal excitations removed, the resultant bimodal P($I$) in the inherent potential energy surface (IPES) exhibited a 3:1 ratio between high- and low-density-like molecules, with the latter forming small connected clusters amid the predominant population. By considering the spatial correlations and hydrogen bond network topologies $among$ water molecules with the same LSI identities, we demonstrate that the signatures of th...

  11. Local Government Revenue Bonds (Montana)

    Broader source: Energy.gov [DOE]

    Limited obligation local government bonds ("special revenue bonds") may be issued for qualified electric energy generation facilities, including those powered by renewables. These bonds generally...

  12. On local duality invariance in electromagnetism

    E-Print Network [OSTI]

    S. C. Tiwari

    2012-06-18T23:59:59.000Z

    Duality is one of the oldest known symmetries of Maxwell equations. In recent years the significance of duality symmetry has been recognized in superstrings and high energy physics and there has been a renewed interest on the question of local duality rotation invariance. In the present paper we re-visit global duality symmetry in the Maxwell action and delineate the ambiguous role of gauge invariance and time locality. We have recently demonstrated that local duality invariance in a Lorentz covariant form can be carried out in the Maxwell equations. In this paper it is shown that in the four-pseudo vector Lagrangian theory of Sudbery a local duality generalization can be naturally and unambiguously implemented and the Euler-Lagrange equations of motion are consistent with the generalized Maxwell field equations. It is pointed out that the extension of Noether theorem in full generality for a vector action is an important open problem in mathematical physics. Physical consequences of this theory for polarized light and topological insulators are also discussed.

  13. Beyond National Uniformity: Diverging Local Economic Governance Under Japan's Decentralization Reforms

    E-Print Network [OSTI]

    Lee, Jung Hwan

    2010-01-01T23:59:59.000Z

    New Public Management (NPM) argument and the civil societyis highly related to the NPM argument. Historically, localof local service delivery. The NPM argument is a well-known

  14. Local Energy Landscape in a Simple Liquid

    E-Print Network [OSTI]

    Takuya Iwashita; Takeshi Egami

    2014-10-31T23:59:59.000Z

    It is difficult to relate the properties of liquids and glasses directly to their structure because of complexity in the structure which defies precise definition. The potential energy landscape (PEL) approach is a very insightful way to conceptualize the structure-property relationship in liquids and glasses, particularly on the effect of temperature and history. However, because of the highly multi-dimensional nature of the PEL it is hard to determine, or even visualize, the actual details of the energy landscape. In this article we introduce a modified concept of the local energy landscape (LEL) which is limited in phase space, and demonstrate its usefulness using molecular dynamics simulation on a simple liquid at high temperatures. The local energy landscape is given as a function of the local coordination number, the number of the nearest neighbor atoms. The excitations in the LEL corresponds to the so-called beta-relaxation process. The LEL offers a simple but useful starting point to discuss complex phenomena in liquids and glasses.

  15. The Universe Viewed in Gamma-Rays 1 Properties of Gamma-ray Bursts Localized by

    E-Print Network [OSTI]

    Enomoto, Ryoji

    The Universe Viewed in Gamma-Rays 1 Properties of Gamma-ray Bursts Localized by the HETE-2 and localize Gamma-ray bursts (GRBs) in wide field of view. HETE-2 have been localized about 20 GRBs per year hours after the burst. 1. The High Energy Transient Explorer 2 Gamma-ray burst (GRB) is the most

  16. Exploring Quality in MultiSensor Pervasive Systems -A Localization Case Study

    E-Print Network [OSTI]

    Venkatasubramanian, Nalini

    in GPS and other technologies have enabled high quality outdoor localization, the realization of accurate indoor location technologies is significantly more complex. We present a generalized indoor localization framework that composes inputs from multiple localization technologies in a quality-aware manner so

  17. Localized Surface Plasmons in Vibrating Graphene Nanodisks

    E-Print Network [OSTI]

    Wang, Weihua; Mortensen, N Asger; Christensen, Johan

    2015-01-01T23:59:59.000Z

    Localized surface plasmons are confined collective oscillations of electrons in metallic nanoparticles. When driven by light, the optical response is dictated by geometrical parameters and the dielectric environment and plasmons are therefore extremely important for sensing applications. Plasmons in graphene disks have the additional benefit to be highly tunable via electrical stimulation. Mechanical vibrations create structural deformations in ways where the excitation of localized surface plasmons can be strongly modulated. We show that the spectral shift in such a scenario is determined by a complex interplay between the symmetry and shape of the modal vibrations and the plasmonic mode pattern. Tuning confined modes of light in graphene via acoustic excitations, paves new avenues in shaping the sensitivity of plasmonic detectors, and in the enhancement of the interaction with optical emitters, such as molecules, for future nanophotonic devices.

  18. Spatially localized solutions of shear flows

    E-Print Network [OSTI]

    Gibson, J F

    2013-01-01T23:59:59.000Z

    We present several new spatially localized equilibrium and traveling-wave solutions of plane Couette and channel flows. The solutions exhibit strikingly concentrated regions of vorticity that are flanked on either side by high-speed streaks. For several traveling-wave solutions of channel flow, the concentrated vortex structures are confined to the near-wall region and form particularly isolated and elemental coherent structures in the near-wall region of shear flows. The solutions are constructed by a variety of methods: application of windowing functions to previously known spatially periodic solutions, continuation from plane Couette to channel flow conditions, and from initial guesses obtained from turbulent simulation data. We show how the symmetries of localized solutions derive from the symmetries of their periodic counterparts, analyze the exponential decay of their tails, examine the scale separation and scaling of their streamwise Fourier modes, and show that they develop critical layers for large R...

  19. Gradient Improvement by Removal of Identified Local Defects

    SciTech Connect (OSTI)

    R.L. Geng, W.A. Clemens, C.A. Cooper, H. Hayano, K. Watanabe

    2011-07-01T23:59:59.000Z

    Recent experience of ILC cavity processing and testing at Jefferson Lab has shown that some 9-cell cavities are quench limited at a gradient in the range of 15-25 MV/m. Further studies reveal that these quench limits are often correlated with sub-mm sized and highly localized geometrical defects at or near the equator weld. There are increasing evidence to show that these genetic defects have their origin in the material or in the electron beam welding process (for example due to weld irregularities or splatters on the RF surface and welding porosity underneath the surface). A local defect removal method has been proposed at Jefferson Lab by locally re-melting the niobium material. Several 1-cell cavities with known local defects have been treated by using the JLab local e-beam re-melting method, resulting in gradient and Q0 improvement. We also sent 9-cell cavities with known gradient limiting local defects to KEK for local grinding and to FNAL for global mechanical polishing. We report on the results of gradient improvements by removal of local defects in these cavities.

  20. LOCAL GOVERNMENT EMERGENCY PLANNING HANDBOOK

    E-Print Network [OSTI]

    management system and communications plan consistent with existing state and federal energy emergencyCALIFORNIA ENERGY COMMISSION LOCAL GOVERNMENT EMERGENCY PLANNING HANDBOOK April 2004 PUBLICATION and authorities, and to integrate their management and communications systems with both the California Energy

  1. Local Students Explore ARM Program Site

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flows andPress)Local3

  2. Local companies learn about resources for success

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flowsLocal

  3. Efficiency of Local Search Johann Hurink

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    Efficiency of Local Search Johann Hurink University of Twente BETA Mini Cour Efficiency of Local Search #12;Overview of the Talk · Efficiency of local search · Scheduling problems ­ Definition for P|| wjCj BETA Mini Cour Efficiency of Local Search #12;Efficiency of Local Search -1- Basic

  4. Southeastern visits local high school | Department of Energy

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

    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 onYouTube YouTube Note: Since the.pdfBreakingMayDepartment of EnergySite ScreeningSound OilDepartmentof7Southeastern

  5. Local Structure Analysis in $Ab$ $Initio$ Liquid Water

    E-Print Network [OSTI]

    Biswajit Santra; Robert A. DiStasio Jr.; Fausto Martelli; Roberto Car

    2015-02-27T23:59:59.000Z

    Within the framework of density functional theory, the inclusion of exact exchange and non-local van der Waals/dispersion (vdW) interactions is crucial for predicting a microscopic structure of ambient liquid water that quantitatively agrees with experiment. In this work, we have used the local structure index (LSI) order parameter to analyze the local structure in such highly accurate $ab$ $initio$ liquid water. At ambient conditions, the LSI probability distribution, P($I$), was unimodal with most water molecules characterized by more disordered high-density-like local environments. With thermal excitations removed, the resultant bimodal P($I$) in the inherent potential energy surface (IPES) exhibited a 3:1 ratio between high- and low-density-like molecules, with the latter forming small connected clusters amid the predominant population. By considering the spatial correlations and hydrogen bond network topologies $among$ water molecules with the same LSI identities, we demonstrate that the signatures of the experimentally observed low- (LDA) and high-density (HDA) amorphous phases of ice are present in the IPES of ambient liquid water. Analysis of the LSI autocorrelation function uncovered a persistence time of $\\sim$ 4 ps---a finding consistent with the fact that natural thermal fluctuations are responsible for transitions between these distinct yet transient local aqueous environments in ambient liquid water.

  6. Anytime Replanning Using Local Subplan Replacement

    E-Print Network [OSTI]

    Ferrer, Gabriel J.

    Anytime Replanning Using Local Subplan Replacement A Dissertation Presented to the faculty how local subplan replacement can be utilized to implement an anytime planning system that devises new plans to accommodate plan failures. Local subplan replacement consists of selecting subsequences

  7. Dual hidden landscapes in Anderson localization on discrete lattices

    E-Print Network [OSTI]

    Marcelo Leite Lyra; Svitlana Mayboroda; Marcel Filoche

    2014-10-09T23:59:59.000Z

    The localization subregions of stationary waves in continuous disordered media have been recently demonstrated to be governed by a hidden landscape that is the solution of a Dirichlet problem expressed with the wave operator. In this theory, the strength of Anderson localization confinement is determined by this landscape, and continuously decreases as the energy increases. However, this picture has to be changed in discrete lattices in which the eigenmodes close to the edge of the first Brillouin zone are as localized as the low energy ones. Here we show that in a 1D discrete lattice, the localization of low and high energy modes is governed by two different landscapes, the high energy landscape being the solution of a dual Dirichlet problem deduced from the low energy one using the symmetries of the Hamiltonian. We illustrate this feature using the one-dimensional tight-binding Hamiltonian with random on-site potentials as a prototype model. Moreover we show that, besides unveiling the subregions of Anderson localization, these dual landscapes also provide an accurate overal estimate of the localization length over the energy spectrum, especially in the weak disorder regime.

  8. Furthering Your Local Governments' Energy Efficiency Goals: Getting Support from Local Leaders

    Broader source: Energy.gov [DOE]

    Power Point presentation from the Furthering your Local Governments Energy Efficiency Goals part 1 Getting Support From Local Leaders webcast.

  9. Local non-equilibrium thermodynamics

    E-Print Network [OSTI]

    Jinwoo, Lee

    2015-01-01T23:59:59.000Z

    Local Shannon entropy lies at the heart of modern thermodynamics, with much discussion of trajectory-dependent entropy production. When taken at both boundaries of a process in phase space, it reproduces the second law of thermodynamics over a finite time interval for small scale systems. However, given that entropy is an ensemble property, it has never been clear how one can assign such a quantity locally. Given such a fundamental omission in our knowledge, we construct a new ensemble composed of trajectories reaching an individual microstate, and show that locally defined entropy, information, and free energy are properties of the ensemble, or trajectory-independent true thermodynamic potentials. We find that the Boltzmann-Gibbs distribution and Landauer's principle can be generalized naturally as properties of the ensemble, and that trajectory-free state functions of the ensemble govern the exact mechanism of non-equilibrium relaxation.

  10. Local non-equilibrium thermodynamics

    E-Print Network [OSTI]

    Lee Jinwoo; Hajime Tanaka

    2015-01-16T23:59:59.000Z

    Local Shannon entropy lies at the heart of modern thermodynamics, with much discussion of trajectory-dependent entropy production. When taken at both boundaries of a process in phase space, it reproduces the second law of thermodynamics over a finite time interval for small scale systems. However, given that entropy is an ensemble property, it has never been clear how one can assign such a quantity locally. Given such a fundamental omission in our knowledge, we construct a new ensemble composed of trajectories reaching an individual microstate, and show that locally defined entropy, information, and free energy are properties of the ensemble, or trajectory-independent true thermodynamic potentials. We find that the Boltzmann-Gibbs distribution and Landauer's principle can be generalized naturally as properties of the ensemble, and that trajectory-free state functions of the ensemble govern the exact mechanism of non-equilibrium relaxation.

  11. Localization via Automorphisms of the CARs. Local gauge invariance

    E-Print Network [OSTI]

    Hendrik Grundling; Karl-Hermann Neeb

    2010-01-07T23:59:59.000Z

    The classical matter fields are sections of a vector bundle E with base manifold M. The space L^2(E) of square integrable matter fields w.r.t. a locally Lebesgue measure on M, has an important module action of C_b^\\infty(M) on it. This module action defines restriction maps and encodes the local structure of the classical fields. For the quantum context, we show that this module action defines an automorphism group on the algebra A, of the canonical anticommutation relations on L^2(E), with which we can perform the analogous localization. That is, the net structure of the CAR, A, w.r.t. appropriate subsets of M can be obtained simply from the invariance algebras of appropriate subgroups. We also identify the quantum analogues of restriction maps. As a corollary, we prove a well-known "folk theorem," that the algebra A contains only trivial gauge invariant observables w.r.t. a local gauge group acting on E.

  12. Fractal Superconductivity near Localization Threshold

    E-Print Network [OSTI]

    Fominov, Yakov

    Fractal Superconductivity near Localization Threshold Mikhail Feigel'man Landau Institute, Moscow-electron states are extended but fractal and populate small fraction of the whole volume How BCS theory should be modified to account for eigenstates fractality ? #12;Mean-Field Eq. for Tc #12;#12;3D Anderson model: = 0

  13. Kampung Capacity Local Solutions for

    E-Print Network [OSTI]

    Kammen, Daniel M.

    utility customers. Using a hybrid energy resource optimization framework, we explore optimal configurationKampung Capacity Local Solutions for Sustainable Rural Energy in the Baram River Basin, Sarawak Energy Laboratory (RAEL) & Energy and Resources Group and Goldman School of Public Policy Release Date

  14. Understanding Localized-Scanning Worms Zesheng Chen

    E-Print Network [OSTI]

    Ji, Chuanyi

    Understanding Localized-Scanning Worms Zesheng Chen School of Electrical & Computer Engineering Email: jic@ece.gatech.edu Abstract-- Localized scanning is a simple technique used by attackers to search for vulnerable hosts. Localized scanning trades off between the local and the global search

  15. Hardy's non-locality and generalized non-local theory

    E-Print Network [OSTI]

    Sujit K. Choudhary; Sibasish Ghosh; Guruprasad Kar; Samir Kunkri; Ramij Rahaman; Anirban Roy

    2011-10-31T23:59:59.000Z

    Hardy's non-locality theorem for multiple two-level systems is explored in the context of generalized nonlocal theory. We find nonlocal but non-signaling probabilities, providing Hardy's nonlocal argument, which are higher than those in Quantum Mechanics. Maximum probability of success of Hardy's argument is obtained for three two-level systems in quantum as well as in a more generalized theory. Interestingly, the maximum in the nonlocal generalized theory for both the cases turns out to be same.

  16. Device for temporarily closing duct-formers in well completion apparatus

    SciTech Connect (OSTI)

    Zandmer, H.M.; Zandmer, S.M.

    1981-08-25T23:59:59.000Z

    A duct-forming device is disclosed for use in a well completion apparatus of the kind, wherein a bore hole casing is positioned in a bore hole and duct-forming devices of alkali- and acid resistant metal-such as steel-are secured at spaced levels to the casing in alignment with holes machined in the casing wall. In accordance with the invention, a closure device is arranged within the duct-forming device which permits flow of predetermined amounts of liquid, such as acid, from the interior of the casing through the duct-forming device and into the producing formation, while gradually being moved by the liquid into a position in which such fluid flow is prevented. After the fluid flow has been stopped by the closure device and when the formation pressure exceeds the pressure within the duct-forming device and the casing, fluid from the formation then forces the closure device toward and into the casing space to permit thereafter free flow of formation fluid into the duct-forming device and the casing or of pressurized treatment liquid from the casing into the formation. The inventive arrangement permits inter alia the establishment of a sufficient and substantially uniform feeding rate of treatment liquid, such as acid, from the casing into the producing formation through all the duct-formers in preparation for subsequent acidification or other treatments, such as sand fracking.

  17. Cellular Function and Localization of Circadian Clock Proteins in Cyanobacteria

    E-Print Network [OSTI]

    Dong, Guogang

    2011-08-08T23:59:59.000Z

    ................................................................................................77 Polar Localization of CikA Is a Function of Its Pseudo-receiver (PsR) Domain ....................................................................................81 Discussion... Is Not Required for Cell Elongation........................................................................................40 Figure 2.5. High ATPase Activity of KaiC Coincides with Cell Elongation. ........43 Figure 2.6. SasA and RpaA Are Downstream...

  18. Topology of Local Health Officials' Advice Networks: Mind the Gaps

    E-Print Network [OSTI]

    Sadeh, Norman M.

    , evidence-based programs, and service delivery, and health care reform are innovations Author AffiliationsTopology of Local Health Officials' Advice Networks: Mind the Gaps Jacqueline Merrill, RN, MPH: To determine how a health officials' advice network might contribute to a high-performing public health systems

  19. Thermite powder ignition by localized microwaves Yehuda Meir, Eli Jerby

    E-Print Network [OSTI]

    Jerby, Eli

    - propagating high-temperature synthesis (SHS) for sintering of ceramic composites [14]. The magnetic (H, the microwave energy is supplied locally to the powder. It creates a confined hotspot, and initiates a self-propagating the powder prior to its ignition is simulated theoretically, taking into account the powder's temperature

  20. Golgi Localization of Glycosyltransferases Requires a Vps74p Oligomer

    SciTech Connect (OSTI)

    Schmitz, Karl R.; Liu, Jingxuan; Li, Shiqing; Setty, Thanuja Gangi; Wood, Christopher S.; Burd, Christopher G.; Ferguson, Kathryn M. (UPENN-MED)

    2010-02-19T23:59:59.000Z

    The mechanism of glycosyltransferase localization to the Golgi apparatus is a long-standing question in secretory cell biology. All Golgi glycosyltransferases are type II membrane proteins with small cytosolic domains that contribute to Golgi localization. To date, no protein has been identified that recognizes the cytosolic domains of Golgi enzymes and contributes to their localization. Here, we report that yeast Vps74p directly binds to the cytosolic domains of cis and medial Golgi mannosyltransferases and that loss of this interaction correlates with loss of Golgi localization of these enzymes. We have solved the X-ray crystal structure of Vps74p and find that it forms a tetramer, which we also observe in solution. Deletion of a critical structural motif disrupts tetramer formation and results in loss of Vps74p localization and function. Vps74p is highly homologous to the human GMx33 Golgi matrix proteins, suggesting a conserved function for these proteins in the Golgi enzyme localization machinery.

  1. Incoherent Control of Locally Controllable Quantum Systems

    E-Print Network [OSTI]

    Daoyi Dong; Chenbin Zhang; Herschel Rabitz; Alexander Pechen; Tzyh-Jong Tarn

    2008-10-21T23:59:59.000Z

    An incoherent control scheme for state control of locally controllable quantum systems is proposed. This scheme includes three steps: (1) amplitude amplification of the initial state by a suitable unitary transformation, (2) projective measurement on the amplified state, and (3) final optimization by a unitary controlled transformation. The first step increases the amplitudes of some desired eigenstates and the corresponding probability of observing these eigenstates, the second step projects, with high probability, the amplified state into a desired eigenstate, and the last step steers this eigenstate into the target state. Within this scheme, two control algorithms are presented for two classes of quantum systems. As an example, the incoherent control scheme is applied to the control of a hydrogen atom by an external field. The results support the suggestion that projective measurements can serve as an effective control and local controllability information can be used to design control laws for quantum systems. Thus, this scheme establishes a subtle connection between control design and controllability analysis of quantum systems and provides an effective engineering approach for controlling quantum systems with partial controllability information.

  2. Localization in active incommensurate arrays

    E-Print Network [OSTI]

    T. V. Laptyeva; S. V. Denisov; G. V. Osipov; M. V. Ivanchenko

    2014-12-01T23:59:59.000Z

    In a dissipationless linear lattice, spatial disorder or incommensurate modulation induce localization of the lattice eigenstates and block spreading of wave packets. Additionally, incommensurate arrays allow for the metal-insulator transition at a finite modulation amplitude already in one dimension. The addition of nonlinearity to the lattice Hamiltonian causes interaction between the eigenstates, which results in a slow packet spreading. We go beyond the dissipationless limit and consider nonlinear quasi-periodic arrays that are subjected to the dissipative losses and energy pumping. We find that there is a finite excitation of oscillations threshold in both metallic and insulating regimes. Moreover, excitation in the metallic and weakly insulating regime displays features of the second order phase transition to global oscillations, in contrast to disordered arrays. The Anderson attractor regime is recovered only in the limit of strong localization. The identified transition, and the further onset of chaos and synchronization can be potentially realized with polariton condensates lattices and cavity-QED arrays.

  3. The Local Dimension of Energy

    E-Print Network [OSTI]

    Kelly, Scott

    2011-01-31T23:59:59.000Z

     and international experience, several bespoke energy strategies are identified  that have significant potential to contribute to local energy demand reduction and lower  CO2 emissions  in  the UK. The  strategies  identified  include, Combined Heat and Power  with  District  Heating  (CHP?DH),  Energy  from  Waste  Facilities  (Ef... Energy, Decentralised Energy, Energy Service Company (ESCo), CHP, District Heating JEL Classification Contact sjk64@cama.c.uk Publication January 2011 Financial Support 4CMR, Cambridge Econometrics, Cambridge Trusts 1 The...

  4. Local Cloning of Entangled Qubits

    E-Print Network [OSTI]

    Sujit K. Choudhary; Samir Kunkri; Ramij Rahaman; Anirban Roy

    2007-07-06T23:59:59.000Z

    We discuss the exact cloning of orthogonal but entangled qubits under local operations and classical communication. The amount of entanglement necessary in blank copy is obtained for various cases. Surprisingly this amount is more than 1 ebit for certain set of two nonmaximal but equally entangled states of two qubits system. To clone any three two qubits Bell states at least log2 3 ebit is necessary.

  5. Local public document room directory. Revision 7

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    This directory (NUREG/BR-0088, Revision 7) lists local public document rooms (LPDRs) for commercial nuclear power plants with operating or possession-only licenses or under construction, plus the LPDRs for potential high-level radioactive waste repository sites, gaseous diffusion plants, certain fuel cycle facilities, certain low-level waste disposal facilities, and any temporary LPDRs established for the duration of licensing proceedings. In some instances, the LPDR libraries maintain document collections for more than one licensed facility. The library staff members listed are the persons most familiar with the LPDR collections. Reference librarians in the NRC Headquarters Public Document Room (PDR) are also available to assist the public in locating NRC documents.

  6. Source localization of brain activity using helium-free interferometer

    SciTech Connect (OSTI)

    Dammers, Jürgen, E-mail: J.Dammers@fz-juelich.de; Chocholacs, Harald; Eich, Eberhard; Boers, Frank [Institute of Neuroscience and Medicine (INM-4), Forschungszentrum Jülich, Jülich (Germany); Faley, Michael; Dunin-Borkowski, Rafal E. [Peter Grünberg Institute (PGI-5), Forschungszentrum Jülich, Jülich (Germany); Jon Shah, N. [Institute of Neuroscience and Medicine (INM-4), Forschungszentrum Jülich, Jülich (Germany); Department of Neurology, RWTH Aachen University, Aachen (Germany); Jülich Aachen Research Alliance (JARA)—Translational Brain Medicine, Jülich (Germany)

    2014-05-26T23:59:59.000Z

    To detect extremely small magnetic fields generated by the human brain, currently all commercial magnetoencephalography (MEG) systems are equipped with low-temperature (low-T{sub c}) superconducting quantum interference device (SQUID) sensors that use liquid helium for cooling. The limited and increasingly expensive supply of helium, which has seen dramatic price increases recently, has become a real problem for such systems and the situation shows no signs of abating. MEG research in the long run is now endangered. In this study, we report a MEG source localization utilizing a single, highly sensitive SQUID cooled with liquid nitrogen only. Our findings confirm that localization of neuromagnetic activity is indeed possible using high-T{sub c} SQUIDs. We believe that our findings secure the future of this exquisitely sensitive technique and have major implications for brain research and the developments of cost-effective multi-channel, high-T{sub c} SQUID-based MEG systems.

  7. Technical Potential for Local Distributed

    E-Print Network [OSTI]

    the impact of high penetrations of solar PV on wholesale power markets (energy and capacity), since large amounts of distributed solar PV could decrease wholesale power prices

  8. Anderson localization on a simplex

    E-Print Network [OSTI]

    A. Ossipov

    2013-02-08T23:59:59.000Z

    We derive a field-theoretical representation for the moments of the eigenstates in the generalized Anderson model. The representation is exact and can be used for the Anderson model with generic non-random hopping elements in any dimensions. We apply this method to the simplex model, for which the hopping amplitude between any two lattice sites is the same, and find that the eigenstates are localized at any strength of disorder. Our analytical predictions are in excellent agreement with the results of numerical simulations.

  9. Multimodal Presentation of Local Danger Warnings for Drivers: A Situation-Dependent Assessment of Usability

    E-Print Network [OSTI]

    Theune, Mariët

    Multimodal Presentation of Local Danger Warnings for Drivers: A Situation-Dependent Assessment danger warning function. To achieve high-quality assistance, the communication mode needs to be adaptive. Moreover, regardless of communication mode, the local danger warning function was considered as the most

  10. Fingerprinting Localization based on Neural Networks and Ultra-wideband signals

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    by processing an IR-UWB indoor propagation measurement campaign. The construction of the neural networks and different sizes of the fingerprinting database. Index Terms--Fingerprinting, Localization, Neural networks]. A good indoor localization system must have a high accuracy, a short training phase, a low cost

  11. Targeting Illegal Immigration: Local Ordinate Action

    E-Print Network [OSTI]

    Gunn, Emily; Moffitt, Jessica; Montemayor, Victoria; Riedel, Sarah; Smith, Bart; Weizel, Daniel

    2008-01-01T23:59:59.000Z

    2006 and 2008. The small number is surprising, given the recent media coverage on the topic. For these 21 localities, we studied several demographic and economic characteristics for each locality over time to try to ascertain factors that may...

  12. Sensor network localization based on natural phenomena

    E-Print Network [OSTI]

    Kim, Daniel Sang

    2006-01-01T23:59:59.000Z

    Autonomous localization is crucial for many sensor network applications. The goal of this thesis is to develop a distributed localization algorithm for the PLUG indoor sensor network by analyzing sound and light sensory ...

  13. Local Option- Solar Sales Tax Exemption

    Broader source: Energy.gov [DOE]

    The exemption does not apply to solar pool heating or other recreational applications. The laws also permit local governments (municipalities and counties) to grant an exemption from local sales...

  14. "Furthering Your Local Governments' Energy Efficiency Goals-- Part 1- Getting Support From Local Leaders "

    Broader source: Energy.gov [DOE]

    DOE’s technical assistance program webcast on furthering your local government’s energy efficiency goals. This is part one, gaining support from local leaders.

  15. Spotlight on Rutland County, Vermont: How Local Ties Lead to...

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

    Rutland County, Vermont: How Local Ties Lead to Local Wins Spotlight on Rutland County, Vermont: How Local Ties Lead to Local Wins Spotlight on Rutland County, Vermont: How Local...

  16. NOvA Experiment - The Local Community

    ScienceCinema (OSTI)

    Deb Wieber

    2010-01-08T23:59:59.000Z

    Local proprietors Steve and Deb Wieber discuss the impact of the NOvA experiment on their community.

  17. NOvA Experiment - The Local Community

    SciTech Connect (OSTI)

    Deb Wieber

    2009-05-14T23:59:59.000Z

    Local proprietors Steve and Deb Wieber discuss the impact of the NOvA experiment on their community.

  18. Cosmological perturbations on local systems

    E-Print Network [OSTI]

    Gregory S. Adkins; Jordan McDonnell; Richard N. Fell

    2006-12-22T23:59:59.000Z

    We study the effect of cosmological expansion on orbits--galactic, planetary, or atomic--subject to an inverse-square force law. We obtain the laws of motion for gravitational or electrical interactions from general relativity--in particular, we find the gravitational field of a mass distribution in an expanding universe by applying perturbation theory to the Robertson-Walker metric. Cosmological expansion induces an ($\\ddot a/a) \\vec r$ force where $a(t)$ is the cosmological scale factor. In a locally Newtonian framework, we show that the $(\\ddot a/a) \\vec r$ term represents the effect of a continuous distribution of cosmological material in Hubble flow, and that the total force on an object, due to the cosmological material plus the matter perturbation, can be represented as the negative gradient of a gravitational potential whose source is the material actually present. We also consider the effect on local dynamics of the cosmological constant. We calculate the perihelion precession of elliptical orbits due to the cosmological constant induced force, and work out a generalized virial relation applicable to gravitationally bound clusters.

  19. DISTRIBUTED EVENT LOCALIZATION AND TRACKING ALGORITHM (DELTA)

    E-Print Network [OSTI]

    Braun, Torsten

    in a distributed event localization and tracking algorithm (DELTA). DELTA is extended with energy-efficient network management, event classification functionality and an energy based source localization. The energy;#12;Abstract Different approaches to do event detection, tracking, localization and classification have been

  20. UNCORRECTEDPROOF 2 Positioning using local maps q

    E-Print Network [OSTI]

    Ruml, Wheeler

    Positioning using Local 11 Maps (PLM). Given a path between a starting node and a remote node we wish absolute coordinates. We instantiate the PLM framework using the previously pro- 15 posed MDS Local 57 Maps (PLM). The method estimates node loca- 58 tions based on local maps, i.e., positions

  1. Local Dynamic Reactive Power for Correction of System Voltage Problems

    SciTech Connect (OSTI)

    Kueck, John D [ORNL; Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Xu, Yan [ORNL; Li, Huijuan [University of Tennessee, Knoxville (UTK); Adhikari, Sarina [ORNL; Irminger, Philip [ORNL

    2008-12-01T23:59:59.000Z

    Distribution systems are experiencing outages due to a phenomenon known as local voltage collapse. Local voltage collapse is occurring in part because modern air conditioner compressor motors are much more susceptible to stalling during a voltage dip than older motors. These motors can stall in less than 3 cycles (.05s) when a fault, such as on the sub-transmission system, causes voltage to sag to 70 to 60%. The reasons for this susceptibility are discussed in the report. During the local voltage collapse, voltages are depressed for a period of perhaps one or two minutes. There is a concern that these local events are interacting together over larger areas and may present a challenge to system reliability. An effective method of preventing local voltage collapse is the use of voltage regulation from Distributed Energy Resources (DER) that can supply or absorb reactive power. DER, when properly controlled, can provide a rapid correction to voltage dips and prevent motor stall. This report discusses the phenomenon and causes of local voltage collapse as well as the control methodology we have developed to counter voltage sag. The problem is growing because of the use of low inertia, high efficiency air conditioner (A/C) compressor motors and because the use of electric A/C is growing in use and becoming a larger percentage of system load. A method for local dynamic voltage regulation is discussed which uses reactive power injection or absorption from local DER. This method is independent, rapid, and will not interfere with conventional utility system voltage control. The results of simulations of this method are provided. The method has also been tested at the ORNL s Distributed Energy Communications and Control (DECC) Laboratory using our research inverter and synchronous condenser. These systems at the DECC Lab are interconnected to an actual distribution system, the ORNL distribution system, which is fed from TVA s 161kV sub-transmission backbone. The test results are also provided and discussed. The simulations and testing show that local voltage control from DER can prevent local voltage collapse. The results also show that the control can be provided so quickly, within 0.5 seconds, that is does not interfere with conventional utility methods.

  2. Mapping local hippocampal changes in Alzheimer's disease and normal ageing with MRI at 3 Tesla

    E-Print Network [OSTI]

    Thompson, Paul

    Mapping local hippocampal changes in Alzheimer's disease and normal ageing with MRI at 3 Tesla and Alzheimer's disease based on high resolution MRI at 3 Tesla. T1-weighted images were acquired from 19

  3. Edge Localized Image Sharpening via Reassignment with Application to Computed Tomography

    E-Print Network [OSTI]

    Bhashyam, Srikrishna

    Edge Localized Image Sharpening via Reassignment with Application to Computed Tomography Timothy computed tomography. Practical implementations limit the amount of high frequency content. Keywords: Image enhancement, edge sharpening, computed tomography, wavelets, reassignment 1. INTRODUCTION

  4. Cooperative localization in wireless networks

    E-Print Network [OSTI]

    Wymeersch, Henk

    Location-aware technologies will revolutionize many aspects of commercial, public service, and military sectors, and are expected to spawn numerous unforeseen applications. A new era of highly accurate ubiquitous ...

  5. Medial Axis Local Planner: Local Planning for Medial Axis Roadmaps

    E-Print Network [OSTI]

    Manavi, Kasra Mehron

    2012-07-16T23:59:59.000Z

    is the Probabilistic Roadman Method (PRM), which generates a graph of the free space of an environment referred to as a roadmap. In this work we describe a new approach to making high clearance paths when using PRM The medial axis is useful for this since...

  6. Locally Optimal Control of Quantum Systems with Strong Feedback

    E-Print Network [OSTI]

    Alireza Shabani; Kurt Jacobs

    2008-12-07T23:59:59.000Z

    For quantum systems with high purity, we find all observables that, when continuously monitored, maximize the instantaneous reduction in the von Neumann entropy. This allows us to obtain all locally optimal feedback protocols with strong feedback, and explicit expressions for the best such protocols for systems of size N optimal protocol is the optimal protocol for a given range of control times, and derive an upper bound on all optimal protocols with strong feedback.

  7. A local Echo State Property through the largest Lyapunov exponent

    E-Print Network [OSTI]

    Mathieu Galtier; Gilles Wainrib

    2015-05-24T23:59:59.000Z

    Echo State Networks are efficient time-series predictors, which highly depend on the value of the spectral radius of the reservoir connectivity matrix. Based on recent results on the mean field theory of driven random recurrent neural networks, enabling the computation of the largest Lyapunov exponent of an ESN, we develop a cheap algorithm to establish a local and operational version of the Echo State Property.

  8. Adaptive AFM scan speed control for high aspect ratio fast structure tracking

    SciTech Connect (OSTI)

    Ahmad, Ahmad; Schuh, Andreas; Rangelow, Ivo W. [Department of Microelectronic and Nanoelectronic Systems, Faculty of Electrical Engineering and Information Technology Ilmenau University of Technology, Gustav-Kirchhoffstr. 1, 98684 Ilmenau (Germany)

    2014-10-15T23:59:59.000Z

    Improved imaging rates in Atomic Force Microscopes (AFM) are of high interest for disciplines such as life sciences and failure analysis of semiconductor wafers, where the sample topology shows high aspect ratios. Also, fast imaging is necessary to cover a large surface under investigation in reasonable times. Since AFMs are composed of mechanical components, they are associated with comparably low resonance frequencies that undermine the effort to increase the acquisition rates. In particular, high and steep structures are difficult to follow, which causes the cantilever to temporarily loose contact to or crash into the sample. Here, we report on a novel approach that does not affect the scanner dynamics, but adapts the lateral scanning speed of the scanner. The controller monitors the control error signal and, only when necessary, decreases the scan speed to allow the z-piezo more time to react to changes in the sample's topography. In this case, the overall imaging rate can be significantly increased, because a general scan speed trade-off decision is not needed and smooth areas are scanned fast. In contrast to methods trying to increase the z-piezo bandwidth, our method is a comparably simple approach that can be easily adapted to standard systems.

  9. Under Utilization of Local Anesthetics in Infant Lumbar Punctures

    E-Print Network [OSTI]

    Gorchynski, Julie; Everett, Worth; Prebil, Linda

    2008-01-01T23:59:59.000Z

    Ochoa LF. Role of local anesthesia during lumbar puncturesnot routinely received local anesthesia prior to LP. Studyreceived local procedural anesthesia by emergency medicine

  10. State and Local Energy Assurance Planning | Department of Energy

    Office of Environmental Management (EM)

    State and Local Energy Assurance Planning State and Local Energy Assurance Planning OE works closely with State and local governments on energy assurance issues. The office...

  11. State and Local Code Implementation: Southwest Region - 2014...

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

    and Local Code Implementation: Southeast Region - 2014 BTO Peer Review State and Local Code Implementation: State Energy Officials - 2014 BTO Peer Review State and Local Code...

  12. Localization of disordered bosons and magnets in random fields

    SciTech Connect (OSTI)

    Yu, Xiaoquan, E-mail: yuxq2008@gmail.com [International School for Advanced Studies (SISSA), via Bonomea 265, 34136 Trieste (Italy) [International School for Advanced Studies (SISSA), via Bonomea 265, 34136 Trieste (Italy); New Zealand Institute for Advanced Study, Centre for Theoretical Chemistry and Physics, Massey University, Auckland 0745 (New Zealand); Müller, Markus, E-mail: markusm@ictp.it [The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste (Italy)] [The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste (Italy)

    2013-10-15T23:59:59.000Z

    We study localization properties of disordered bosons and spins in random fields at zero temperature. We focus on two representatives of different symmetry classes, hard-core bosons (XY magnets) and Ising magnets in random transverse fields, and contrast their physical properties. We describe localization properties using a locator expansion on general lattices. For 1d Ising chains, we find non-analytic behavior of the localization length as a function of energy at ?=0, ?{sup ?1}(?)=?{sup ?1}(0)+A|?|{sup ?}, with ? vanishing at criticality. This contrasts with the much smoother behavior predicted for XY magnets. We use these results to approach the ordering transition on Bethe lattices of large connectivity K, which mimic the limit of high dimensionality. In both models, in the paramagnetic phase with uniform disorder, the localization length is found to have a local maximum at ?=0. For the Ising model, we find activated scaling at the phase transition, in agreement with infinite randomness studies. In the Ising model long range order is found to arise due to a delocalization and condensation initiated at ?=0, without a closing mobility gap. We find that Ising systems establish order on much sparser (fractal) subgraphs than XY models. Possible implications of these results for finite-dimensional systems are discussed. -- Highlights: •Study of localization properties of disordered bosons and spins in random fields. •Comparison between XY magnets (hard-core bosons) and Ising magnets. •Analysis of the nature of the magnetic transition in strong quenched disorder. •Ising magnets: activated scaling, no closing mobility gap at the transition. •Ising order emerges on sparser (fractal) support than XY order.

  13. Sister trajectories and locality in multiloop string scattering

    SciTech Connect (OSTI)

    Carbon, S.L. (ACTA Inc., 505 N. Orlando Avenue, Mez 3, Cocoa Beach, Florida 32931 (United States))

    1995-04-15T23:59:59.000Z

    The multiloop corrections to the high energy behavior of four-tachyon scattering are studied in string theory. In the limit of high center-of-mass energy, [ital s][r arrow][infinity], for fixed transfer momentum squared, [ital t], we obtain the Regge behavior of the first sister'' trajectory in two-loop scattering. The multiloop-generated sisters are found to be independent of propagator twists, which are necessary for exposing tree-level sisters. The presence of these trajectories in higher order loop diagrams may be sufficient for string theory to be consistent nonperturbatively with locality.

  14. A Quantum Lovasz Local Lemma

    E-Print Network [OSTI]

    Andris Ambainis; Julia Kempe; Or Sattath

    2009-11-09T23:59:59.000Z

    The Lovasz Local Lemma (LLL) is a powerful tool in probability theory to show the existence of combinatorial objects meeting a prescribed collection of "weakly dependent" criteria. We show that the LLL extends to a much more general geometric setting, where events are replaced with subspaces and probability is replaced with relative dimension, which allows to lower bound the dimension of the intersection of vector spaces under certain independence conditions. Our result immediately applies to the k-QSAT problem: For instance we show that any collection of rank 1 projectors with the property that each qubit appears in at most $2^k/(e \\cdot k)$ of them, has a joint satisfiable state. We then apply our results to the recently studied model of random k-QSAT. Recent works have shown that the satisfiable region extends up to a density of 1 in the large k limit, where the density is the ratio of projectors to qubits. Using a hybrid approach building on work by Laumann et al. we greatly extend the known satisfiable region for random k-QSAT to a density of $\\Omega(2^k/k^2)$. Since our tool allows us to show the existence of joint satisfying states without the need to construct them, we are able to penetrate into regions where the satisfying states are conjectured to be entangled, avoiding the need to construct them, which has limited previous approaches to product states.

  15. Local Varying-Alpha Theories

    E-Print Network [OSTI]

    John D. Barrow; Joao Magueijo

    2015-01-30T23:59:59.000Z

    In a recent paper we demonstrated how the simplest model for varying alpha may be interpreted as the effect of a dielectric material, generalized to be consistent with Lorentz invariance. Unlike normal dielectrics, such a medium cannot change the speed of light, and its dynamics obey a Klein-Gordon equation. This work immediately suggests an extension of the standard theory, even if we require compliance with Lorentz invariance. Instead of a wave equation, the dynamics may satisfy a local algebraic relation involving the permittivity and the properties of the electromagnetic field, in analogy with more conventional dielectric (but still preserving Lorentz invariance). We develop the formalism for such theories and investigate some phenomenological implications. The problem of the divergence of the classical self-energy can be solved, or at least softened, in this framework. Some interesting new cosmological solutions for the very early universe are found, including the possibility of a bounce, inflation and expansion with a loitering phase, all of which are induced by early variations in alpha.

  16. The Local Interstellar Ultraviolet Radiation Field

    E-Print Network [OSTI]

    Richard Conn Henry

    2002-01-03T23:59:59.000Z

    I have used the Hipparcos Input Catalog, together with Kurucz model stellar atmospheres, and information on the strength of the interstellar extinction, to create a model of the expected intensity and spectral distribution of the local interstellar ultraviolet radiation field, under various assumptions concerning the albedo a of the interstellar grains. (This ultraviolet radiation field is of particular interest because of the fact that ultraviolet radiation is capable of profoundly affecting the chemistry of the interstellar medium.) By comparing my models with the observations, I am able to conclude that the albedo a of the interstellar grains in the far ultraviolet is very low, perhaps a = 0.1. I also advance arguments that my present determination of this albedo is much more reliable than any of the many previous (and conflicting) ultraviolet interstellar grain albedo determinations. Beyond this, I show that the ultraviolet background radiation that is observed at high galactic latitudes must be extragalactic in origin, as it cannot be backscatter of the interstellar radiation field.

  17. MULTISCALE ANALYSIS IMPLIES STRONG DYNAMICAL LOCALIZATION

    E-Print Network [OSTI]

    Stollmann, P.

    localized region), E n k� \\Lambda 1 j(H(!))� \\Lambda 2 k o Ÿ kjk1 \\Delta dist(\\Lambda 1 ; \\Lambda 2 ) \\Gamma

  18. Localized domain patterns in complex polymers

    E-Print Network [OSTI]

    Localized domain patterns in complex polymers abstract. Block copolymers are macromolecules that can form variety of microstructures as a result of incomplete

  19. Convolution type operators on locally compact groups

    E-Print Network [OSTI]

    Shtein--~erg, Convolution Type Operators on Locally Compact Groups [in Russian],. Manuscript Deposited in the All-Union Institute of Scientific and Technical ...

  20. LANSCE | Lujan Center | Highlights | Local iron displacements...

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

    Fe4 plaquettes, correlates with local displacements of the Fe atoms as determined from neutron pair-distribution function analysis of the same data. The spins align...

  1. Model Wind Ordinance for Local Governments

    Broader source: Energy.gov [DOE]

    In 2006, Pennsylvania developed a model local ordinance for wind energy facilities through a collaborative effort involving several state departments and stakeholder groups. The purpose of the...

  2. Local Option- Property Tax Exemption for Solar

    Broader source: Energy.gov [DOE]

    Virginia allows any county, city or town to exempt or partially exempt solar energy equipment or recycling equipment from local property taxes. Residential, commercial or industrial property is...

  3. Shear strain localization in elastodynamic rupture simulations

    E-Print Network [OSTI]

    Daub, Eric G; Carlson, Jean M

    2008-01-01T23:59:59.000Z

    We study strain localization as an enhanced velocity weakening mechanism on earthquake faults. Fault friction is modeled using Shear Transformation Zone (STZ) Theory, a microscopic physical model for non-affine rearrangements in granular fault gouge. STZ Theory is implemented in spring slider and dynamic rupture models of faults. We compare dynamic shear localization to deformation that is uniform throughout the gouge layer, and find that localized slip enhances the velocity weakening of the gouge. Localized elastodynamic ruptures have larger stress drops and higher peak slip rates than ruptures with homogeneous strain.

  4. Ultrafast charge localization in a stripe-phase nickelate

    SciTech Connect (OSTI)

    Coslovich, Giacomo; Huber, Bernhard; Lee, Wei-Sheng; Sasagawa, Takao; Hussain, Zahid; Bechtel, Hans A.; Martin, Michael C.; Shen, Zhi-Xun; W. Schoenlein, Robert; A. Kaindl, Robert

    2013-08-30T23:59:59.000Z

    Self-organized electronically-ordered phases are a recurring feature in correlated materials, resulting in e.g. fluctuating charge stripes whose role in high-Tc superconductivity is under debate. However, the relevant cause-effect relations between real-space charge correlations and low-energy excitations remain hidden in time-averaged studies. Here, we reveal ultrafast charge localization and lattice vibrational coupling as dynamical precursors of stripe formation in the model compound La1.75Sr0.25NiO4, using ultrafast and equilibrium mid-infrared spectroscopy. The opening of a pseudogap at a crossover temperature T* far above long-range stripe formation establishes the onset of electronic localization which is accompanied by an enhanced Fano asymmetry of Ni-O stretch vibrations. Ultrafast excitation triggers a sub-picosecond dynamics exposing the synchronous modulation of electron-phonon coupling and charge localization. These results illuminate the role of localization in forming the pseudogap in nickelates, opening a path to understanding this mysterious phase in a broad class of complex oxides.

  5. Local structure and dynamics in colloidal fluids and gels

    E-Print Network [OSTI]

    Takehiro Ohtsuka; C. Patrick Royall; Hajime Tanaka

    2009-04-17T23:59:59.000Z

    Gels in soft-matter systems are an important nonergodic state of matter. We study a colloid-polymer mixture which is quenched by increasing the polymer concentration, from a fluid to a gel. Using confocal microscopy, we study both the static structure and dynamics in three dimensions (3D). Between the dynamically arrested gel and ergodic fluid comprised of isolated particles we find an intermediate 'cluster fluid' state, where the 'bonds' between the colloidal particles have a finite lifetime. The local dynamics are reminiscent of a fluid, while the local structure is almost identical to that of the gel. Simultaneous real-time local structural analysis and particle tracking in 3D at the single-particle level yields the following interesting information. Particles in the clusters move in a highly correlated manner, but, at the same time, exhibit significant dynamical heterogeneity, reflecting the enhanced mobility near the free surface. Deeper quenching eventually leads to a gel state where the 'bond' lifetime exceeds that of the experiment, although the local structure is almost identical to that of the 'cluster fluid'.

  6. LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR D-MODULES

    E-Print Network [OSTI]

    Bloch, Spencer

    LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR D. Local Fourier transforms, analogous to the `-adic local Fourier transforms [14], are constructed infinitesimal rigidity condition is satisfied. As in [12], the argument uses local Fourier transforms

  7. LOCALIZED AURORA BEYOND THE AURORAL OVAL

    E-Print Network [OSTI]

    California at Berkeley, University of

    LOCALIZED AURORA BEYOND THE AURORAL OVAL Harald U. Frey1 Received 3 June 2005; revised 8 September 2006; accepted 10 October 2006; published 2 March 2007. [1] Aurora is the result of the interaction, there are localized regions of aurora that are unrelated to the ovals and exhibit different morphological, spatial

  8. Local Export Spillovers in France Pamina Koenig

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Local Export Spillovers in France Pamina Koenig Florian Mayneris Sandra Poncet§ Abstract This paper investigates the presence of local export spillovers on both the extensive (the decision to start exporting) and the intensive (the export volume) margins of trade, using data on French individual export flows, at the product

  9. Optimal Robot Localization in Trees Rudolf Fleischer

    E-Print Network [OSTI]

    Fleischer, Rudolf

    Optimal Robot Localization in Trees Rudolf Fleischer Department of Computer Science, The Hong Kong of localization, that is, of a robot finding its position on a map, is an important task for autonomous mobile robots. It has appli­ cations in numerous areas of robotics ranging from aerial photography to autonomous

  10. Local symmetries of non-expanding horizons

    E-Print Network [OSTI]

    Rudranil Basu; Ayan Chatterjee; Amit Ghosh

    2010-04-21T23:59:59.000Z

    Local symmetries of a non-expanding horizon has been investigated in the 1st order formulation of gravity. When applied to a spherically symmetric isolated horizon only a U(1) subgroup of the Lorentz group survives as residual local symmetry that one can make use of in constructing an effective theory on the horizon.

  11. Natural geometric representation for electron local observables

    SciTech Connect (OSTI)

    Minogin, V.G., E-mail: minogin@isan.troitsk.ru

    2014-03-15T23:59:59.000Z

    An existence of the quartic identities for the electron local observables that define orthogonality relations for the 3D quantities quadratic in the electron observables is found. It is shown that the joint solution of the quartic and bilinear identities for the electron observables defines a unique natural representation of the observables. In the natural representation the vector type electron local observables have well-defined fixed positions with respect to a local 3D orthogonal reference frame. It is shown that the natural representation of the electron local observables can be defined in six different forms depending on a choice of the orthogonal unit vectors. The natural representation is used to determine the functional dependence of the electron wave functions on the local observables valid for any shape of the electron wave packet. -- Highlights: •Quartic identities that define the orthogonality relations for the electron local observables are found. •Joint solution of quartic and bilinear identities defines a unique natural representation of the electron local observables. •Functional dependence of the electron wave functions on the electron local observables is determined.

  12. Local Transition Functions of Quantum Turing Machines

    E-Print Network [OSTI]

    Masanao Ozawa; Harumichi Nishimura

    2000-12-26T23:59:59.000Z

    Foundations of the notion of quantum Turing machines are investigated. According to Deutsch's formulation, the time evolution of a quantum Turing machine is to be determined by the local transition function. In this paper, the local transition functions are characterized for fully general quantum Turing machines, including multi-tape quantum Turing machines, extending the results due to Bernstein and Vazirani.

  13. DAMAGE LOCALIZATION USING LOAD VECTORS Dionisio Bernal

    E-Print Network [OSTI]

    Bernal, Dionisio

    DAMAGE LOCALIZATION USING LOAD VECTORS Dionisio Bernal Associate Professor Department of Civil: A technique to localize damage in structures that can be treated as linear in the pre and post-damage state is presented. Central to the approach is the computation of a set of vectors, designated as Damage Locating

  14. Structural Damage Detection and Localization Using NETSHM

    E-Print Network [OSTI]

    Gnawali, Omprakash

    Structural Damage Detection and Localization Using NETSHM Krishna Chintalapudi, Jeongyeup Paek and localize damage in large civil structures. Structural engineers often implement and test SHM algorithms the intricacies of wireless networking, or the details of sensor data acquisition. We have implemented a damage

  15. Local Connections: Designing Technologies for Discovery and

    E-Print Network [OSTI]

    of great historical importance as the basis for our heritage, missing the rich narratives of socialOpenUniversity|j.vanderlinden@open.ac.uk Anne Adams TheOpenUniversity|a.adams@open.ac.uk Historical artifacts, places, char- acters, and stories with local heritage were developed and evaluated with local groups. The goal of the project was to enhance

  16. Climate Change Adaptation for Local Government

    E-Print Network [OSTI]

    Pedersen, Tom

    Climate Change Adaptation for Local Government A Resource Guide June 2011 Jenny Fraser, Adaptation to Climate Change Team, Simon Fraser University #12;Page 1 of 26 Climate Change Adaptation for Local: RESOURCES THAT SUPPORT CLIMATE CHANGE ASSESSMENT 3. Past and Future Climate Change and Its Impacts 4

  17. Locally Accessible Information and Distillation of Entanglement

    E-Print Network [OSTI]

    Sibasish Ghosh; Pramod Joag; Guruprasad Kar; Samir Kunkri; Anirban Roy

    2004-03-18T23:59:59.000Z

    A new type of complementary relation is found between locally accessible information and final average entanglement for given ensemble. It is also shown that in some well known distillation protocol, this complementary relation is optimally satisfied. We discuss the interesting trade-off between locally accessible information and distillable entanglement for some states.

  18. Furthering Your Local Governments' Energy Efficiency Goals-- Part 1- Getting Support From Local Leaders

    Broader source: Energy.gov [DOE]

    An overview of some of the best practices for gaining support for energy efficiency projects from your local leaders , key data points and other items of interest that local leaders might look for when approached about supporting energy efficiency projects..

  19. Localities and their natural gas : stories of problem diffusion, state preemption, and local government capacity

    E-Print Network [OSTI]

    Agatstein, Jessica C

    2013-01-01T23:59:59.000Z

    The rapid rise of oil and gas production in the United States poses a new set of policy challenges for local governments. Striving to balance the goals of encouraging economic growth and mitigating its side effects, local ...

  20. Global-local Structural Optimization Using Response Surfaces of Local Optimization Margins

    E-Print Network [OSTI]

    Neumaier, Arnold

    1 Global-local Structural Optimization Using Response Surfaces of Local Optimization Margins Boyang optimization problems. First, a large number of component optimizations for maximization of margins are performed. Response surface approximations (RSA) for maximum margins of component optimization

  1. Electron localization in solid acetonitrile.

    SciTech Connect (OSTI)

    Shkrob, I. A.; Takeda, K.; Williams, F.; Chemistry; Univ. of Tennessee

    2002-10-03T23:59:59.000Z

    Electron localization in the bulk condensed phases of acetonitrile differs drastically from the corresponding processes that take place in water and aliphatic alcohols. In particular, electron capture following the ionization of liquid and solid acetonitrile yields well-defined radical anions in place of the largely structureless solvated and trapped electrons characteristic of irradiated solutions and rigid glasses. This is remarkable given the many similarities that exist not only between the intrinsic properties of these individual solvent molecules, such as polarity, but also in their cooperative capacity to function as solvents. Here, with the aid of detailed experimental and computational studies, we examine on a fundamental level what gives rise to such a sharp contrast in the behavior of these alkyl cyanides as compared to water and alcohols. EPR and optical spectra, and ab initio calculations on the radical anions are used together with diffraction data for the crystal structures to demonstrate that electron attachment to nitrile molecules in the crystalline state results in a significant bending of the linear CCN moiety. Moreover, in the formation of the dimer anions, which only takes place in certain crystalline phases, it is determined that the intermolecular bonding occurs between the cyanide carbons in an antiparallel arrangement. A staggered structure for the dimer anion in {alpha}-acetonitrile is then suggested, in which there is a nearly coplanar arrangement with the two bent CCN fragments. The resulting structure accounts for the observed EPR parameters, the position of the UV-vis absorption band, and the trends observed in the vibronic progressions for the four H/D isotopomers. The dimer radical anion in a-acetonitrile retains the same orientation and symmetry as that of the preexisting neutral {l_brace}CH{sub 3}CN{r_brace}{sub 2} pairs in this crystal despite the resulting changes in molecular geometry and in the translational coordinates for the cyanide carbons as the two acetonitrile molecules come together. We suggest that dimer anions of nitriles can form only in the phases where such 'antiparallel' pairs occur, including liquid systems; otherwise, the electron remains attached to a single molecule, as in {beta}-acetonitrile. Because electron capture by water or alcohol molecules in the condensed phase appears to require larger molecular clusters, the contrast between the behavior of these solvents and acetonitrile is attributable to the relative ease with which acetonitrile molecules in the crystal or solvent can undergo valence-electron attachment via their accessible low-lying {pi}* orbitals.

  2. Electron localization in liquid acetonitrile.

    SciTech Connect (OSTI)

    Shkrob, I. A.; Sauer, M. C.; Chemistry

    2002-10-03T23:59:59.000Z

    Time-resolved one- and two-pulse laser dc photoconductivity has been used to observe two kinds of reducing species, anion-1 and anion-2, in liquid acetonitrile. At 25 C, the standard enthalpy of conversion from anion-1 to anion-2 is -44.3 {+-} 3.6 kJ/mol and the conversion time is 3 ns. The high-temperature form, anion-1, absorbs in the IR and migrates >3.3 times faster than any other ion in acetonitrile. This rapid migration has a low activation energy of 3.2 kJ/mol (vs 7.6 kJ/mol for other ions). Anion-1 rapidly transfers the electron to acceptors with high electron affinity, with rate constant up to 10{sup 11} M{sup -1} s{sup -1}. The low-temperature form, anion-2, absorbs in the visible and exhibits normal mobility and electron-transfer rates, ca. 1.5 x 10{sup 10} M{sup -1} s{sup -1}. It reacts, by proton transfer, with two hydrogen-bonded molecules of water and/or aliphatic alcohols. Laser photoexcitation of these two solvent anions in their respective absorption bands leads to the formation of CH{sub 3} and CN{sup -}. We present arguments indicating that anion-2 is a dimer radical anion of acetonitrile, whereas anion-1 is a multimer radical anion that may be regarded as a 'solvated electron'.

  3. Local Basis Expansions for MEG Source Localization. Partha P. Mitra1

    E-Print Network [OSTI]

    , but are not identical to, spherical harmonics. Components of the transformed sensor measure- ments which correspond density power. The latter is particularly useful for localization of spontaneous activity. Below we first of the LBEX technique is to transform a global basis set into a local basis set for a given local region

  4. Local Control of Reactive Power by Distributed Photovoltaic Generators

    E-Print Network [OSTI]

    Turitsyn, Konstantin S; Backhaus, Scott; Chertkov, Misha

    2010-01-01T23:59:59.000Z

    High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the slow response of existing utility compensation and regulation equipment. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We suggest a local control scheme that dispatches reactive power from each PV inverter based on local instantaneous measurements of the real and reactive components of the consumed power and the re...

  5. Equation of state of gluon plasma from local action

    SciTech Connect (OSTI)

    Zwanziger, Daniel [New York University, New York, New York 10003 (United States)

    2007-12-15T23:59:59.000Z

    We review recent analytic and numerical results concerning the confinement scenario in Coulomb gauge. We then consider a local, renormalizable, BRST(Becchi-Rouet-Stora-Tyutin)-invariant action for QCD in Coulomb gauge that contains auxiliary bose and fermi ghost fields and sources. When the auxiliary fields are integrated out, one obtains the standard Coulomb gauge action with a cutoff at the Gribov horizon. We use the local formulation to calculate the leading correction to the Stefan-Boltzmann equation of state at high temperature due to the cutoff at the Gribov horizon. It is of order g{sup 6}, which is precisely the order at which the infrared divergence found by Linde divergence first occurs. No such divergence arises in the present calculation because the propagator of would-be physical gluons is suppressed in the infrared due to the proximity of the Gribov horizon in infrared directions.

  6. Exploiting locality in quantum computation for quantum chemistry

    E-Print Network [OSTI]

    Jarrod R. McClean; Ryan Babbush; Peter J. Love; Alán Aspuru-Guzik

    2014-07-29T23:59:59.000Z

    Accurate prediction of chemical and material properties from first principles quantum chemistry is a challenging task on traditional computers. Recent developments in quantum computation offer a route towards highly accurate solutions with polynomial cost, however this solution still carries a large overhead. In this perspective, we aim to bring together known results about the locality of physical interactions from quantum chemistry with ideas from quantum computation. We show that the utilization of spatial locality combined with the Bravyi-Kitaev transformation offers an improvement in the scaling of known quantum algorithms for quantum chemistry and provide numerical examples to help illustrate this point. We combine these developments to improve the outlook for the future of quantum chemistry on quantum computers.

  7. West Windsor-Plainsboro High School South wins regional Science...

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

    West Windsor-Plainsboro High School South wins regional Science Bowl at PPPL A dramatic ending to High School Bowl sends local team to nationals By Jeanne Jackson DeVoe February...

  8. Using the electron localization function to correct for confinement physics in semi-local density functional theory

    SciTech Connect (OSTI)

    Hao, Feng, E-mail: hfeng413@gmail.com; Mattsson, Ann E., E-mail: aematts@sandia.gov [Multi-Scale Science MS 1322, Sandia National Laboratories, Albuquerque, New Mexico 87185-1322 (United States); Armiento, Rickard [Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping (Sweden)] [Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping (Sweden)

    2014-05-14T23:59:59.000Z

    We have previously proposed that further improved functionals for density functional theory can be constructed based on the Armiento-Mattsson subsystem functional scheme if, in addition to the uniform electron gas and surface models used in the Armiento-Mattsson 2005 functional, a model for the strongly confined electron gas is also added. However, of central importance for this scheme is an index that identifies regions in space where the correction provided by the confined electron gas should be applied. The electron localization function (ELF) is a well-known indicator of strongly localized electrons. We use a model of a confined electron gas based on the harmonic oscillator to show that regions with high ELF directly coincide with regions where common exchange energy functionals have large errors. This suggests that the harmonic oscillator model together with an index based on the ELF provides the crucial ingredients for future improved semi-local functionals. For a practical illustration of how the proposed scheme is intended to work for a physical system we discuss monoclinic cupric oxide, CuO. A thorough discussion of this system leads us to promote the cell geometry of CuO as a useful benchmark for future semi-local functionals. Very high ELF values are found in a shell around the O ions, and take its maximum value along the Cu–O directions. An estimate of the exchange functional error from the effect of electron confinement in these regions suggests a magnitude and sign that could account for the error in cell geometry.

  9. Non-local bias in the halo bispectrum with primordial non-Gaussianity

    E-Print Network [OSTI]

    Matteo Tellarini; Ashley J. Ross; Gianmassimo Tasinato; David Wands

    2015-04-01T23:59:59.000Z

    The statistics of large-scale structure in our Universe can discriminate between different scenarios for the origin of primordial density perturbations. Primordial non-Gaussianity can lead to a scale-dependent bias in the density of collapsed halos relative to the underlying matter density. The galaxy power spectrum already provides constraints on local-type primordial non-Gaussianity complementary to those from the cosmic microwave background, while the bispectrum contains additional shape information and has the potential to outperform CMB constraints in future. We develop the bias model for the halo density contrast in the presence of local-type primordial non-Gaussianity, deriving a bivariate expansion up to second order in terms of the local linear matter density contrast and the local gravitational potential in Lagrangian coordinates. We show how the evolution from linear to non-linear matter density introduces the non-local, tidal term in the halo model, while the presence of local-type non-Gaussianity in the Lagrangian frame generically leads to a novel non-local convective term in the Eulerian frame proportional to the displacement field, when going beyond the spherical collapse approximation. We use an extended Press-Schechter approach to evaluate the halo mass function and thus the halo bispectrum including these non-local terms and show that they can lead to corrections of up to $25\\%$ with respect to previous work for some configurations, on large scales or at high redshift.

  10. Local complex singularity exponents for isolated singularities

    E-Print Network [OSTI]

    Hou, Zuoliang, 1977-

    2004-01-01T23:59:59.000Z

    In this thesis, I studied the stability of local complex'singularity exponents (lcse) for holomorphic functions whose zero sets have only isolated singularities. For a given holomorphic function f defined on a neighborhood ...

  11. Anderson localization of partially incoherent light

    SciTech Connect (OSTI)

    Capeta, D.; Radic, J.; Buljan, H. [Department of Physics, University of Zagreb, PP 332, 10000 Zagreb (Croatia); Szameit, A.; Segev, M. [Physics Department and Solid State Institute, Technion, Haifa 32000 (Israel)

    2011-07-15T23:59:59.000Z

    We study Anderson localization and propagation of partially spatially incoherent wavepackets in linear disordered potentials, motivated by the insight that interference phenomena resulting from multiple scattering are affected by the coherence of the waves. We find that localization is delayed by incoherence: the more incoherent the waves are, the longer they diffusively spread while propagating in the medium. However, if all the eigenmodes of the system are exponentially localized (as in one- and two-dimensional disordered systems), any partially incoherent wavepacket eventually exhibits localization with exponentially decaying tails, after sufficiently long propagation distances. Interestingly, we find that the asymptotic behavior of the incoherent beam is similar to that of a single instantaneous coherent realization of the beam.

  12. Guidance for Local Wind Energy Ordinances

    Broader source: Energy.gov [DOE]

    Note: The documents described in this summary were designed to provide guidance to local governments that wish to develop their own siting rules for wind turbines. While they were developed under...

  13. Localized Helioseismic Constraints on Solar Structure

    E-Print Network [OSTI]

    John N. Bahcall; Sarbani Basu; Pawan Kumar

    1997-06-13T23:59:59.000Z

    Localized differences between the real sun and standard solar models are shown to be small. The sound speeds of the real and the standard model suns typically differ by less than 0.3% in the solar core.

  14. Solar Easements & Local Option Solar Rights Laws

    Broader source: Energy.gov [DOE]

    The New York General City, Town, and Village codes also allow local zoning districts to make regulations regarding solar access that provide for "the accommodation of solar energy systems and...

  15. Local Option- Residential Sustainable Energy Program

    Broader source: Energy.gov [DOE]

    Property-Assessed Clean Energy (PACE) financing effectively allows property owners to borrow money from the local government to pay for energy improvements. The amount borrowed is typically repai...

  16. The Complexity of the Local Hamiltonian Problem

    E-Print Network [OSTI]

    Julia Kempe; Alexei Kitaev; Oded Regev

    2005-10-02T23:59:59.000Z

    The k-local Hamiltonian problem is a natural complete problem for the complexity class QMA, the quantum analog of NP. It is similar in spirit to MAX-k-SAT, which is NP-complete for k<=2. It was known that the problem is QMA-complete for any k <= 3. On the other hand 1-local Hamiltonian is in P, and hence not believed to be QMA-complete. The complexity of the 2-local Hamiltonian problem has long been outstanding. Here we settle the question and show that it is QMA-complete. We provide two independent proofs; our first proof uses only elementary linear algebra. Our second proof uses a powerful technique for analyzing the sum of two Hamiltonians; this technique is based on perturbation theory and we believe that it might prove useful elsewhere. Using our techniques we also show that adiabatic computation with two-local interactions on qubits is equivalent to standard quantum computation.

  17. Fiscal stimulus through state and local governments

    E-Print Network [OSTI]

    Feiveson, Laura (Laura Judith)

    2012-01-01T23:59:59.000Z

    State and local governments in the United States make up more than half of total government consumption and investment and almost 90 percent of total government employment. Despite these facts, the debates surrounding ...

  18. Local Option- Commercial PACE Financing (Utah)

    Broader source: Energy.gov [DOE]

    Senate Bill 221 of 2013 authorizes local governments to adopt Commercial* Property Assessed Clean Energy (C-PACE) financing programs. C-PACE allows property owners to finance energy efficiency and...

  19. Local Option Municipal Economic Development Act (Nebraska)

    Broader source: Energy.gov [DOE]

    This act gives local governments the option to provide direct and indirect assistance to business enterprises in their communities, whether for expansion of existing operations, the creation of new...

  20. Agenda: State, Local and Tribal Issues

    Broader source: Energy.gov [DOE]

    Many of the primary authorities and governance structures that exist for states, localities and tribes related to electricity infrastructure have been in place for decades. What can be learned from...

  1. Local Solid Waste Disposal Act (Illinois)

    Broader source: Energy.gov [DOE]

    It is the purpose of this Act and the policy of this State to protect the public health and welfare and the quality of the environment by providing local governments with the ability to properly...

  2. Locally-smeared operator product expansions

    SciTech Connect (OSTI)

    Monahan, Christopher; Orginos, Kostantinos

    2014-12-01T23:59:59.000Z

    We propose a "locally-smeared Operator Product Expansion" (sOPE) to decompose non-local operators in terms of a basis of locally-smeared operators. The sOPE formally connects nonperturbative matrix elements of smeared degrees of freedom, determined numerically using the gradient flow, to non-local operators in the continuum. The nonperturbative matrix elements do not suffer from power-divergent mixing on the lattice, provided the smearing scale is kept fixed in the continuum limit. The presence of this smearing scale prevents a simple connection to the standard operator product expansion and therefore requires the construction of a two-scale formalism. We demonstrate the feasibility of our approach using the example of real scalar field theory.

  3. Cooperative localization for autonomous underwater vehicles

    E-Print Network [OSTI]

    Bahr, Alexander

    2009-01-01T23:59:59.000Z

    Self-localization of an underwater vehicle is particularly challenging due to the absence of Global Positioning System (GPS) reception or features at known positions that could otherwise have been used for position ...

  4. Local Option- County Energy District Authority

    Broader source: Energy.gov [DOE]

    Oklahoma enacted S.B. 102, effective November 2011, to make PACE loans junior and inferior to other liens. This law should allow local governments to adopt PACE programs that are within the accep...

  5. Developmental Plasticity Links Local Adaptation and Evolutionary

    E-Print Network [OSTI]

    Badyaev, Alex

    Developmental Plasticity Links Local Adaptation and Evolutionary Diversification in Foraging, University of Arizona, Tucson, Arizona Developmental plasticity is thought to reconcile the constraining role morphology into adulthood, providing an opportunity to directly examine the links between plasticity of bone

  6. EERE's State & Local Energy Data Tool

    SciTech Connect (OSTI)

    Shambarger, Erick; DeCesaro, Jennifer

    2014-06-23T23:59:59.000Z

    EERE's State and Local Energy Data (SLED) Tool provides basic energy market information that can help state and local governments plan and implement clean energy projects, including electricity generation; fuel sources and costs; applicable policies, regulations, and financial incentives; and renewable energy resource potential. Watch this video to learn more about the tool and hear testimonials from real users about the benefits of using this tool.

  7. EERE's State & Local Energy Data Tool

    ScienceCinema (OSTI)

    Shambarger, Erick; DeCesaro, Jennifer

    2014-06-26T23:59:59.000Z

    EERE's State and Local Energy Data (SLED) Tool provides basic energy market information that can help state and local governments plan and implement clean energy projects, including electricity generation; fuel sources and costs; applicable policies, regulations, and financial incentives; and renewable energy resource potential. Watch this video to learn more about the tool and hear testimonials from real users about the benefits of using this tool.

  8. System and method for bullet tracking and shooter localization

    SciTech Connect (OSTI)

    Roberts, Randy S. (Livermore, CA); Breitfeller, Eric F. (Dublin, CA)

    2011-06-21T23:59:59.000Z

    A system and method of processing infrared imagery to determine projectile trajectories and the locations of shooters with a high degree of accuracy. The method includes image processing infrared image data to reduce noise and identify streak-shaped image features, using a Kalman filter to estimate optimal projectile trajectories, updating the Kalman filter with new image data, determining projectile source locations by solving a combinatorial least-squares solution for all optimal projectile trajectories, and displaying all of the projectile source locations. Such a shooter-localization system is of great interest for military and law enforcement applications to determine sniper locations, especially in urban combat scenarios.

  9. Local businesses win 20/20 Campaign awards

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flowsLocal businesses

  10. Local firms benefit from Jefferson Lab upgrade (Inside Business) |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flowsLocalJefferson

  11. Local control of reactive power by distributed photovoltaic generators

    SciTech Connect (OSTI)

    Chertkov, Michael [Los Alamos National Laboratory; Turitsyn, Konstantin [Los Alamos National Laboratory; Sulc, Petr [Los Alamos National Laboratory; Backhaus, Scott [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the slow response of existing utility compensation and regulation equipment. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We suggest a local control scheme that dispatches reactive power from each PV inverter based on local instantaneous measurements of the real and reactive components of the consumed power and the real power generated by the PVs. Using one adjustable parameter per circuit, we balance the requirements on power quality and desire to minimize thermal losses. Numerical analysis of two exemplary systems, with comparable total PV generation albeit a different spatial distribution, show how to adjust the optimization parameter depending on the goal. Overall, this local scheme shows excellent performance; it's capable of guaranteeing acceptable power quality and achieving significant saving in thermal losses in various situations even when the renewable generation in excess of the circuit own load, i.e. feeding power back to the higher-level system.

  12. 2009 Spring : Highly Distinguished Honors Highly Distinguished

    E-Print Network [OSTI]

    Kasman, Alex

    Highly Distinguished Bowers Michelle Diane Highly Distinguished Bowling Joseph David Highly Distinguished Ashley Highly Distinguished Bryant Catherine Clancy Highly Distinguished Buckheister Elaine A Highly

  13. Reforming Local Government in Broome County 1 Center for Local Government College of Community & Public Affairs Binghamton University

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    #12;Reforming Local Government in Broome County 1 Center for Local Government ­ College on committee findings and issued recommendations in each area studied. Reforming Local Government in Broome;Reforming Local Government in Broome County 2 Center for Local Government ­ College of Community & Public

  14. High PRF high current switch

    DOE Patents [OSTI]

    Moran, Stuart L. (Fredericksburg, VA); Hutcherson, R. Kenneth (College Park, MD)

    1990-03-27T23:59:59.000Z

    A triggerable, high voltage, high current, spark gap switch for use in pu power systems. The device comprises a pair of electrodes in a high pressure hydrogen environment that is triggered by introducing an arc between one electrode and a trigger pin. Unusually high repetition rates may be obtained by undervolting the switch, i.e., operating the trigger at voltages much below the self-breakdown voltage of the device.

  15. Oklahoma Local Development and Enterprise Zone Incentive Leverage Act (Oklahoma)

    Broader source: Energy.gov [DOE]

    The Oklahoma Local Development and Enterprise Zone Incentive Leverage Act provides funding for local units of government to match local tax revenue dedicated to support a project located in an...

  16. Localized edge states and homoclinic snaking in plane Couette flow

    E-Print Network [OSTI]

    Doedel, Eusebius

    -dimension =1) Skufca, Yorke & Eckhardt PRL 2006; Schneider, Eckhardt & Yorke PRL 2007; Schneider et al. PRE channels Schneider, Gibson & Burke, PRL, 2010 Bifurcation diagram: Localized traveling waves Localized-Stokes dynamics Schneider, Gibson & Burke, PRL, 2010 #12;Localized `cousins'

  17. V.3K(1)-Local Homotopy Theory, Iwasawa Theory

    E-Print Network [OSTI]

    V.3K(1)-Local Homotopy Theory, Iwasawa Theory and Algebraic K-Theory Stephen A. Mitchell* 3.3 K(1)-local Homotopy Theory............................................................. 965 -Adic K-Theory ................................................................. 968 K(1)-Localization

  18. 2011 Spring : Highly Distinguished Honors Highly Distinguished

    E-Print Network [OSTI]

    Kasman, Alex

    Elizabeth Campbell Highly Distinguished Bowker Ripley Eden Highly Distinguished Brandfass Lara Rose Highly Distinguished Brotherton Cara Price Highly Distinguished Brown Anna Laughlin Highly Distinguished Brown Chloe Alix Highly Distinguished Brown Kelsey Michelle Highly Distinguished Brown Kyle Truman Highly

  19. Local purity distillation with bounded classical communication

    E-Print Network [OSTI]

    Hari Krovi; Igor Devetak

    2007-05-28T23:59:59.000Z

    Local pure states are an important resource for quantum computing. The problem of distilling local pure states from mixed ones can be cast in an information theoretic paradigm. The bipartite version of this problem where local purity must be distilled from an arbitrary quantum state shared between two parties, Alice and Bob, is closely related to the problem of separating quantum and classical correlations in the state and in particular, to a measure of classical correlations called the one-way distillable common randomness. In Phys. Rev. A 71, 062303 (2005), the optimal rate of local purity distillation is derived when many copies of a bipartite quantum state are shared between Alice and Bob, and the parties are allowed unlimited use of a unidirectional dephasing channel. In the present paper, we extend this result to the setting in which the use of the channel is bounded. We demonstrate that in the case of a classical-quantum system, the expression for the local purity distilled is efficiently computable and provide examples with their tradeoff curves.

  20. Converting online algorithms to local computation algorithms

    E-Print Network [OSTI]

    Mansour, Yishay; Vardi, Shai; Xie, Ning

    2012-01-01T23:59:59.000Z

    We propose a general method for converting online algorithms to local computation algorithms by selecting a random permutation of the input, and simulating running the online algorithm. We bound the number of steps of the algorithm using a query tree, which models the dependencies between queries. We improve previous analyses of query trees on graphs of bounded degree, and extend the analysis to the cases where the degrees are distributed binomially, and to a special case of bipartite graphs. Using this method, we give a local computation algorithm for maximal matching in graphs of bounded degree, which runs in time and space O(log^3 n). We also show how to convert a large family of load balancing algorithms (related to balls and bins problems) to local computation algorithms. This gives several local load balancing algorithms which achieve the same approximation ratios as the online algorithms, but run in O(log n) time and space. Finally, we modify existing local computation algorithms for hypergraph 2-color...

  1. Correlations In n-local Scenario

    E-Print Network [OSTI]

    Kaushiki Mukherjee; Biswajit Paul; Debasis Sarkar

    2015-03-05T23:59:59.000Z

    Recently Bell-type inequalities were introduced in Phys. Rev. A \\textbf{85}, 032119 (2012) to analyze the correlations emerging in an entanglement swapping scenario characterized by independence of the two sources shared between three parties. The corresponding scenario was referred to as \\textit{bilocal} scenario. Here, we derive Bell-type inequalities in $n+1$ party scenario, i.e., in $n$-local scenario. Considering the two different cases with several number of inputs and outputs, we derive local and $n$-local bounds. The $n$-local inequality studied for two cases are proved to be tight. Replacing the sources by maximally entangled states for two binary inputs and two binary outputs and also for the fixed input and four outputs, we observe quantum violations of $n$-local bounds. But the resistance offered to noise cannot be increased as compared to the bilocal scenario. Thus increasing the number of parties in a linear fashion in source independent scenario does not contribute in lowering down the requirements of revealing quantumness in a network in contrast to the star configuration (Phys. Rev. A \\textbf{90}, 062109 (2014)) of $n+1$ parties.

  2. Interactive local search for multiple-criteria scheduling

    E-Print Network [OSTI]

    Li, Shijun

    1998-01-01T23:59:59.000Z

    , then the local search procedure is termed probabilistic (e. g. , simulated annealing). Probabilistic local search aims at avoiding that the search process gets trapped in local optima. The local search solution space can be viewed as a graph G = (V... solution and may be trapped in poor local optima. Second, they require large, though deterministic, computational effort. One very promising way of cutting down computational time is by using parallelism (Verhoeven and Aarts, 1995). Unfortunately, local...

  3. Local diamagnetic susceptibility of quasi-two-dimensional graphite

    SciTech Connect (OSTI)

    Nikolaev, E. G., E-mail: nikolaev@kapitza.ras.ru [Russian Academy of Sciences, Kapitsa Institute for Physical Problems (Russian Federation); Kotosonov, A. S. [OAO NIIgrafit (Russian Federation)] [OAO NIIgrafit (Russian Federation); Shalashugina, E. A.; Troyanovskii, A. M. [Russian Academy of Sciences, Kapitsa Institute for Physical Problems (Russian Federation)] [Russian Academy of Sciences, Kapitsa Institute for Physical Problems (Russian Federation); Tsebro, V. I. [Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)] [Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

    2013-08-15T23:59:59.000Z

    A sample of quasi-two-dimensional graphite (QTDG) whose magnetic properties are described within the Dirac fermion model is investigated by the nuclear magnetic resonance (NMR) and scanning tunneling microscopy (STM) techniques. The broad spectrum of the sample points to a large dispersion of crystallite sizes in this system, which is also confirmed by STM data. It is established that the local diamagnetic susceptibility may substantially exceed the average value over the sample and reaches an abnormally high value of -1.3 Multiplication-Sign 10{sup -4} emu/g at T = 4.2 K, which is greater than the corresponding value of highly oriented graphite by a factor of four.

  4. Status of HI searches for CHVCs beyond the Local Group

    E-Print Network [OSTI]

    Robert Braun; W. Butler Burton

    2001-06-15T23:59:59.000Z

    Growing evidence supports the suggestion that the compact high-velocity clouds of HI (CHVCs) are located throughout the Local Group and continue to fuel galactic evolution. Recent distance estimates to individual objects lie in the range 150-850 kpc, implying an HI mass range of 10^5.7 to 10^7.2 M_Sun together with sizes ranging from 2-12 kpc, while the average linewidth is 30 km/s FWHM. It is natural to ask whether objects of this type would not already have been seen by current blind HI surveys of the extragalactic sky. We consider the properties of the deepest published surveys of this type and conclude that the sensitivity and coverage have now begun to reveal the high mass end of the distribution (M_HI >10^7 M_Sun). Achieving detection limits an order of magnitude deeper should finally enable direct study of these systems beyond the Local Group, or definitively rule out their existence.

  5. anexiales experiencia local: Topics by E-print Network

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

    mosaics are constructed and used to localize a mobile robot operating in the modeled environment. Straightforward techniques from vision-based localization and mosaicking are used...

  6. adenocarcinomes pancreatiques localement: Topics by E-print Network

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

    mosaics are constructed and used to localize a mobile robot operating in the modeled environment. Straightforward techniques from vision-based localization and mosaicking are used...

  7. ampullectomy experiencia local: Topics by E-print Network

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

    mosaics are constructed and used to localize a mobile robot operating in the modeled environment. Straightforward techniques from vision-based localization and mosaicking are used...

  8. Energy Department Awards $5 Million to Spur Local Clean Energy...

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

    5 Million to Spur Local Clean Energy Development, Energy Savings Energy Department Awards 5 Million to Spur Local Clean Energy Development, Energy Savings October 14, 2014 -...

  9. Local Soot Loading Distribution in Cordierite Diesel Particulate...

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

    Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by Dynamic Neutron Radiography Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by...

  10. Measuring Up: How to Track and Evaluate Local Sustainability Projects

    Office of Energy Efficiency and Renewable Energy (EERE)

    Join this EPA Local Climate and Energy webinar to learn how to measure and evaluate the results of local climate, energy, and sustainability projects.

  11. U.S. Environmental Protection Agency State and Local Climate...

    Open Energy Info (EERE)

    for clean energy jobs, greenhouse gas accounting protocols, local strategy guides, case studies, Webcasts, Podcasts, building energy efficiency for local governments, and...

  12. Local Energy Alliance Program Adds Green Appraisal Capabilities...

    Energy Savers [EERE]

    Local Energy Alliance Program Adds Green Appraisal Capabilities to its Energy Efficiency Services Local Energy Alliance Program Adds Green Appraisal Capabilities to its Energy...

  13. albicans interactions localization: Topics by E-print Network

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

    from a local polarizability model MIT - DSpace Summary: A local approximation for dynamic polarizability leads to a nonlocal functional for the long-range dispersion...

  14. T-653: Linux Kernel sigqueueinfo() Process Lets Local Users Send...

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

    Process Lets Local Users Send Spoofed Signals T-653: Linux Kernel sigqueueinfo() Process Lets Local Users Send Spoofed Signals June 23, 2011 - 4:49am Addthis PROBLEM:...

  15. Evidence for Localization of Reaction Upon Reduction of Carbon...

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

    Localization of Reaction Upon Reduction of Carbon Tetrachloride by Granular Iron. Evidence for Localization of Reaction Upon Reduction of Carbon Tetrachloride by Granular Iron....

  16. Obama Administration Announces Additional $13,969,700 for Local...

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

    Additional 13,969,700 for Local Energy Efficiency Improvements in Alaska Obama Administration Announces Additional 13,969,700 for Local Energy Efficiency Improvements in Alaska...

  17. Solar Powering Your Community: A Guide for Local Governments...

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

    A Guide for Local Governments (Book), Energy Efficiency & Renewable Energy (EERE) Solar Powering Your Community: A Guide for Local Governments (Book), Energy Efficiency &...

  18. New Energy Department Team Established to Help Local Authorities...

    Energy Savers [EERE]

    to Help Local Authorities Get Gas Stations Impacted by Hurricane Sandy Back Online New Energy Department Team Established to Help Local Authorities Get Gas Stations Impacted by...

  19. Mahowald and Thompson determined the ?-adic ?-localizations of ...

    E-Print Network [OSTI]

    1910-61-20T23:59:59.000Z

    In [21], Mahowald and Thompson determined the ?-adic ?-localizations of the odd spheres at an arbitrary prime ?, expressing these localizations as homotopy

  20. Obama Administration Announces Additional $11,072,300 for Local...

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

    13,167,500 for Local Energy Efficiency Improvements in South Dakota Obama Administration Announces Additional 33,977,000 for Local Energy Efficiency Improvements in Puerto Rico...

  1. Obama Administration Announces Additional $33,977,000 for Local...

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

    3,977,000 for Local Energy Efficiency Improvements in Puerto Rico Obama Administration Announces Additional 33,977,000 for Local Energy Efficiency Improvements in Puerto Rico...

  2. State and Local Code Implementation: South-central Region - 2014...

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

    2014 BTO Peer Review State and Local Code Implementation: Northeast Region - 2014 BTO Peer Review State and Local Code Implementation: State Energy Officials - 2014 BTO Peer Review...

  3. Cellu-WHAT?-sic: Communicating the Biofuels Message to Local...

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

    Cellu-WHAT?-sic: Communicating the Biofuels Message to Local Stakeholders Cellu-WHAT?-sic: Communicating the Biofuels Message to Local Stakeholders Breakout Session 3D-Building...

  4. Phonon localization drives nanoregions in a relaxor ferroelectric...

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

    localization drives nanoregions in a relaxor ferroelectric April 11, 2014 This inelastic neutron scattering spectrum shows the localizing modes (LMs) between the transverse optic...

  5. Local Leaders: Respond to Natural Gas Disruptions | Department...

    Office of Environmental Management (EM)

    Natural Gas Disruptions Local Leaders: Respond to Natural Gas Disruptions Local Leaders: Respond to Natural Gas Disruptions Because natural gas is distributed through underground...

  6. U-094: EMC Documentum Content Server Lets Local Administrative...

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

    4: EMC Documentum Content Server Lets Local Administrative Users Gain Elevated Privileges U-094: EMC Documentum Content Server Lets Local Administrative Users Gain Elevated...

  7. Spotlight on Rutland County, Vermont: How Local Ties Lead to...

    Energy Savers [EERE]

    Rutland County, Vermont: How Local Ties Lead to Local Wins Driving Demand The Better Buildings Neighborhood Program is part of the national Better Buildings Initiative led by the...

  8. The thermodynamics of general and local anesthesia

    E-Print Network [OSTI]

    Graesboll, Kaare; Heimburg, Thomas

    2014-01-01T23:59:59.000Z

    General anesthetics are known to cause depression of the freezing point of transitions in biomembranes. This is a consequence of ideal mixing of the anesthetic drugs in the membrane fluid phase and exclusion from the solid phase. Such a generic law provides physical justification of the famous Meyer-Overton rule. We show here that general anesthetics, barbiturates and local anesthetics all display the same effect on melting transitions. Their effect is reversed by hydrostatic pressure. Thus, the thermodynamic behavior of local anesthetics is very similar to that of general anesthetics. We present a detailed thermodynamic analysis of heat capacity profiles of membranes in the presence of anesthetics. This analysis is able to describe experimentally observed calorimetric profiles and permits prediction of the anesthetic features of arbitrary molecules. In addition, we discuss the thermodynamic origin of the cutoff-effect of long-chain alcohols and the additivity of the effect of general and local anesthetics.

  9. Topology on locally finite metric spaces

    E-Print Network [OSTI]

    Capraro, Valerio

    2011-01-01T23:59:59.000Z

    The necessity of a theory of General Topology and, most of all, of Algebraic Topology on locally finite metric spaces comes from many areas of research in both Applied and Pure Mathematics: Molecular Biology, Mathematical Chemistry, Computer Science, Topological Graph Theory and Metric Geometry. In this paper we propose the basic notions of such a theory and some applications: we replace the classical notions of continuous function, homeomorphism and homotopic equivalence with the notions of NPP-function, NPP-local-isomorphism and NPP-homotopy (NPP stands for Nearest Point Preserving); we also introduce the notion of NPP-isomorphism. We construct three invariants under NPP-isomorphisms and, in particular, we define the fundamental group of a locally finite metric space. As first applications, we propose the following: motivated by the longstanding question whether there is a purely metric condition which extends the notion of amenability of a group to any metric space, we propose the property SN (Small Neighb...

  10. An emerging architecture of local experimentalist governance in China : a study of local innovations in Baoding, 1992-2012

    E-Print Network [OSTI]

    Shin, Kyoung Mun

    2014-01-01T23:59:59.000Z

    What are the conditions under which local actors are more likely to carry out policy innovations that produce environmental or social benefits in local China? Previous studies on "Chinese experimentalism" suggest that local ...

  11. Repair of localized defects in multilayer-coated reticle blanks for extreme ultraviolet lithography

    DOE Patents [OSTI]

    Stearns, Daniel G. (Los Altos, CA); Sweeney, Donald W. (San Ramon, CA); Mirkarimi, Paul B. (Sunol, CA)

    2004-11-23T23:59:59.000Z

    A method is provided for repairing defects in a multilayer coating layered onto a reticle blank used in an extreme ultraviolet lithography (EUVL) system. Using high lateral spatial resolution, energy is deposited in the multilayer coating in the vicinity of the defect. This can be accomplished using a focused electron beam, focused ion beam or a focused electromagnetic radiation. The absorbed energy will cause a structural modification of the film, producing a localized change in the film thickness. The change in film thickness can be controlled with sub-nanometer accuracy by adjusting the energy dose. The lateral spatial resolution of the thickness modification is controlled by the localization of the energy deposition. The film thickness is adjusted locally to correct the perturbation of the reflected field. For example, when the structural modification is a localized film contraction, the repair of a defect consists of flattening a mound or spreading out the sides of a depression.

  12. Wavelet-based local region-of-interest reconstruction for synchrotron radiation x-ray microtomography

    SciTech Connect (OSTI)

    Li Lingqi; Toda, Hiroyuki; Ohgaki, Tomomi; Kobayashi, Masakazu; Kobayashi, Toshiro; Uesugi, Kentaro; Suzuki, Yoshio [Department of Production Systems Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580 (Japan); Japan Synchrotron Radiation Research Institute, Sayo-gun, Hyougo 679-5198 (Japan)

    2007-12-01T23:59:59.000Z

    Synchrotron radiation x-ray microtomography is becoming a uniquely powerful method to nondestructively access three-dimensional internal microstructure in biological and engineering materials, with a resolution of 1 {mu}m or less. The tiny field of view of the detector, however, requires that the sample has to be strictly small, which would limit the practical applications of the method such as in situ experiments. In this paper, a wavelet-based local tomography algorithm is proposed to recover a small region of interest inside a large object only using the local projections, which is motivated by the localization property of wavelet transform. Local tomography experiment for an Al-Cu alloy is carried out at SPring-8, the third-generation synchrotron radiation facility in Japan. The proposed method readily enables the high-resolution observation for a large specimen, by which the applicability of the current microtomography would be promoted to a large extent.

  13. Graphene Nanoribbon in Sharply Localized Magnetic Fields

    E-Print Network [OSTI]

    Abdulaziz D. Alhaidari; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

    2013-03-20T23:59:59.000Z

    We study the effect of a sharply localized magnetic field on the electron transport in a strip (ribbon) of graphene sheet, which allows to give results for the transmission and reflection probability through magnetic barriers. The magnetic field is taken as a single and double delta type localized functions, which are treated later as the zero width limit of gaussian fields. For both field configurations, we evaluate analytically and numerically their transmission and reflection coefficients. The possibility of spacial confinement due to the inhomogeneous field configuration is also investigated.

  14. Localized quantum walks as secured quantum memory

    E-Print Network [OSTI]

    C. M. Chandrashekar; Th. Busch

    2015-04-21T23:59:59.000Z

    We show that a quantum walk process can be used to construct and secure quantum memory. More precisely, we show that a localized quantum walk with temporal disorder can be engineered to store the information of a single, unknown qubit on a compact position space and faithfully recover it on demand. Since the localization occurss with a finite spread in position space, the stored information of the qubit will be naturally secured from the simple eavesdropper. Our protocol can be adopted to any quantum system for which experimental control over quantum walk dynamics can be achieved.

  15. Local composition models for lattice mixtures

    SciTech Connect (OSTI)

    Wu, D.W.; Cui, Y.; Donohue, M.D. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemical Engineering] [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemical Engineering

    1998-08-01T23:59:59.000Z

    A detailed comparison is made of several local-composition lattice models. The models considered include several popular activity coefficient models: the Wilson equation, Guggenheim`s quasi-chemical theory (GQC), the nonrandom two-liquid theory (NRTL), and the universal quasi-chemical (UNIQUAC) theory. Also considered are three recently developed lattice models: the Born-Green-Yvon (BGY) model, the nonrandom surface fraction (NRSF) model, and the Aranovich-Donohue (AD) model. Similarities and differences in the assumptions regarding the local compositions are examined. Detailed comparisons are made for both symmetric and asymmetric monomer mixtures as well as for polymer/solvent mixtures with Monte Carlo simulations.

  16. Building Local Terrain Maps Using SpatioTemporal Classification for Semantic Robot Localization

    E-Print Network [OSTI]

    Zell, Andreas

    of the environment. We describe how to efficiently integrate the classification results of each time stepBuilding Local Terrain Maps Using Spatio­Temporal Classification for Semantic Robot Localization Stefan Laible1 and Andreas Zell1 Abstract-- The correct classification of the surrounding ter- rain

  17. Signal machines : localization of isolated accumulation Signal machines : localization of isolated

    E-Print Network [OSTI]

    Durand-Lose, Jérôme

    Signal machines : localization of isolated accumulation Signal machines : localization of isolated accumulation Jérôme Durand-Lose Laboratoire d'Informatique Fondamentale d'Orléans, Université d of isolated accumulation 1 Signal machines and isolated accumulations 2 Necessary conditions

  18. The Local Data Manager (LDM) The Unidata Local Data Manager (LDM) is a collection of

    E-Print Network [OSTI]

    and educators at no cost. This data consists primarily of GOES satellite imagery, radar imagery (level IIFact Sheet Data The Local Data Manager (LDM) The Unidata Local Data Manager (LDM) is a collection of cooperating programs that select, capture, manage, and distribute arbitrary data products. The system

  19. 2012 Spring : Highly Distinguished Honors Highly Distinguished

    E-Print Network [OSTI]

    Kasman, Alex

    Highly Distinguished Beck Misty Nicole Highly Distinguished Beckett Ethan Patrick Highly Distinguished Sara Nicole Highly Distinguished Borland Kelly Nicole Highly Distinguished Bosshardt Zachary Michael

  20. 2012 Fall : Highly Distinguished Honors Highly Distinguished

    E-Print Network [OSTI]

    Kasman, Alex

    Distinguished Andersen Meredith Esther Highly Distinguished Anderson Anna Kathleen Highly Distinguished Anderson Leah Ellen Highly Distinguished Anderson Lucy Paige Highly Distinguished Andrews James Matheson Highly Distinguished Aquino Jeri-Lynn Highly Distinguished Armistead Mary Chandler Highly Distinguished Armstrong Jessa

  1. Local Failure in Resected N1 Lung Cancer: Implications for Adjuvant Therapy

    SciTech Connect (OSTI)

    Higgins, Kristin A., E-mail: kristin.higgins@duke.edu [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Chino, Junzo P. [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Berry, Mark [Department of Surgery, Division of Cardiovascular and Thoracic Surgery, Duke University Medical Center, Durham, NC (United States); Ready, Neal [Department of Medicine, Division of Medical Oncology, Duke University Medical Center, Durham, NC (United States); Boyd, Jessamy [US Oncology, Dallas, TX (United States); Yoo, David S.; Kelsey, Chris R. [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States)

    2012-06-01T23:59:59.000Z

    Purpose: To evaluate actuarial rates of local failure in patients with pathologic N1 non-small-cell lung cancer and to identify clinical and pathologic factors associated with an increased risk of local failure after resection. Methods and Materials: All patients who underwent surgery for non-small-cell lung cancer with pathologically confirmed N1 disease at Duke University Medical Center from 1995-2008 were identified. Patients receiving any preoperative therapy or postoperative radiotherapy or with positive surgical margins were excluded. Local failure was defined as disease recurrence within the ipsilateral hilum, mediastinum, or bronchial stump/staple line. Actuarial rates of local failure were calculated with the Kaplan-Meier method. A Cox multivariate analysis was used to identify factors independently associated with a higher risk of local recurrence. Results: Among 1,559 patients who underwent surgery during the time interval, 198 met the inclusion criteria. Of these patients, 50 (25%) received adjuvant chemotherapy. Actuarial (5-year) rates of local failure, distant failure, and overall survival were 40%, 55%, and 33%, respectively. On multivariate analysis, factors associated with an increased risk of local failure included a video-assisted thoracoscopic surgery approach (hazard ratio [HR], 2.5; p = 0.01), visceral pleural invasion (HR, 2.1; p = 0.04), and increasing number of positive N1 lymph nodes (HR, 1.3 per involved lymph node; p = 0.02). Chemotherapy was associated with a trend toward decreased risk of local failure that was not statistically significant (HR, 0.61; p = 0.2). Conclusions: Actuarial rates of local failure in pN1 disease are high. Further investigation of conformal postoperative radiotherapy may be warranted.

  2. Atomically localized plasmon enhancement in monolayer graphene

    E-Print Network [OSTI]

    Pennycook, Steve

    Atomically localized plasmon enhancement in monolayer graphene Wu Zhou1,2 *, Jaekwang Lee1,2 , Jagjit Nanda2 , Sokrates T. Pantelides1,2 , Stephen J. Pennycook1,2 and Juan-Carlos Idrobo1,2 * Plasmons plas- mons in very small regions could have applications in optoelec- tronics8,9 , plasmonics10

  3. STAFF REPORT LOCALIZED HEALTH IMPACTS REPORT

    E-Print Network [OSTI]

    Program Under Solicitation PON 11604 Advanced Vehicle Technology Manufacturing CALIFORNIA ENERGY ­ Advanced Vehicle Technology Manufacturing (CEC6002012005) was posted July 25, 2012, and the 30day public a revised NOPA for additional projects proposed for funding under PON11604, and this Localized Health

  4. A Stability Index for Local Effectivity Functions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Stability Index for Local Effectivity Functions Joseph Abdou October 9, 2009 Abstract We study - France; email: abdou@univ-paris1.fr 1 halshs-00389003,version1-14Oct2009 Author manuscript, published setting (see Abdou and Keiding (2003) for the general notion of effectiv- ity structure), we shall focus

  5. Bosnia and Herzegovina Local Level Institutions

    E-Print Network [OSTI]

    Boyer, Edmond

    Bosnia and Herzegovina Local Level Institutions and Social Capital Study Vol. 1 World Bank, ECSSD World Bank Work on Bosnia-Herzegovina 3 Study's Operational Definition of Social Capital 3 Specific Capital 17 B. Social Cleavages and Population Movements 18 Main Social Cleavages in Bosnia-Herzegovina 18

  6. HYDROGEN LOCAL VIBRATIONAL MODES IN COMPOUND SEMICONDUCTORS

    E-Print Network [OSTI]

    McCluskey, Matthew

    HYDROGEN LOCAL VIBRATIONAL MODES IN COMPOUND SEMICONDUCTORS M.D. MCCLUSKEY* University) spectroscopy of hydrogen and deuterium in GaP, AlSb, ZnSe, and GaN has provided important information about the structures of dopant- hydrogen complexes and their interaction with the host lattice. In GaN:Mg, for example

  7. Analysis of Local Experts in Social Media

    E-Print Network [OSTI]

    Venkatesh, Sindhuja

    2014-12-15T23:59:59.000Z

    ,celebs,celebrity,celebrities,celebz food food, foods, foodie, foodies finance finance, finances politics politics, political, politica, politico, politicians, politician Table 3.3: Topics derived from tag names 18 3.2 Localness of Experts In this section, I begin my investigation...

  8. Kampung Capacity Local Solutions for Sustainable

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Kampung Capacity Local Solutions for Sustainable Rural Energy in the Baram River Basin, Sarawak and social opportunities of up to 1.5 billion people worldwide. As a critical case in point, most rural of service provision based on large-scale regional electrification. A range of different renewable energy

  9. Improvements of the local bosonic algorithm

    E-Print Network [OSTI]

    B. Jegerlehner

    1996-12-15T23:59:59.000Z

    We report on several improvements of the local bosonic algorithm proposed by M. Luescher. We find that preconditioning and over-relaxation works very well. A detailed comparison between the bosonic and the Kramers-algorithms shows comparable performance for the physical situation examined.

  10. Differerential Evolution methods based on local searches

    E-Print Network [OSTI]

    2012-12-12T23:59:59.000Z

    Dec 12, 2012 ... Coupling these techniques with DE and local optimization resulted in ... The strategy outlined in Algorithm 1 can be classified as DE/rand/1/bin. We ...... lowest energy structures of Lennard–Jones clusters containing up to 110.

  11. May 21, 2014 Local Agency Traffic

    E-Print Network [OSTI]

    Minnesota, University of

    Field Evaluation Traffic Data Collection Processes Study Is there better EQUIPMENT for collecting low Improvements Field Evaluation Traffic Data Collection Processes Study Is there better EQUIPMENT for collecting;Project Overview 2013-2014Local Agency Data Collection 5 · Tested traffic sensors in a low

  12. Dynamical Localization in the Paul Trap

    E-Print Network [OSTI]

    M. El Ghafar; P. Torma; V. Savichev; E. Mayr; A. Zeiler; W. P. Schleich

    1996-12-18T23:59:59.000Z

    We show that quantum localization occurs in the center-of-mass motion of an ion stored in a Paul trap and interacting with a standing laser field. The present experimental state of the art makes the observation of this phenomenon feasible.

  13. Locality hypothesis and the speed of light

    E-Print Network [OSTI]

    G. Longhi

    2006-10-11T23:59:59.000Z

    The locality hypothesis is generally considered necessary for the study of the kinematics of non-inertial systems in special relativity. In this paper we discuss this hypothesis, showing the necessity of an improvement, in order to get a more clear understanding of the various concepts involved, like coordinate velocity and standard velocity of light. Concrete examples are shown, where these concepts are discussed.

  14. Proton Hexality in Local Grand Unification

    E-Print Network [OSTI]

    Stefan Forste; Hans Peter Nilles; Saul Ramos-Sanchez; Patrick K. S. Vaudrevange

    2010-09-03T23:59:59.000Z

    Proton hexality is a discrete symmetry that avoids the problem of too fast proton decay in the supersymmetric extension of the standard model. Unfortunately it is inconsistent with conventional grand unification. We show that proton hexality can be incorporated in the scheme of "Local Grand Unification" discussed in the framework of model building in (heterotic) string theory.

  15. LOCAL LINEAR PID CONTROLLERS FOR NONLINEAR CONTROL

    E-Print Network [OSTI]

    Slatton, Clint

    1 LOCAL LINEAR PID CONTROLLERS FOR NONLINEAR CONTROL Jing Lan1, Jeongho Cho1, Deniz Erdogmus2, Jos}@cnel.ufl.edu, derdogmus@ieee.org, m.a.motter@larc.nasa.gov Abstract Nonlinear PID design is difficult if one approaches modeling approach with traditional linear PID controller design techniques to arrive at a principled

  16. EPA`s local governments reimbursement program

    SciTech Connect (OSTI)

    Zeller, E.; Ferguson, J. [Environmental Protection Agency, Washington, DC (United States). Emergency Response Division; Catalano, J.; Lally, R. [Booz Allen and Hamilton, Bethesda, MD (United States)

    1994-12-31T23:59:59.000Z

    Under the Superfund Amendments and Reauthorization Act (SARA), section 123 of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), Congress enacted the Local Governments Reimbursement (LGR) Program. The program`s goal is to provide financial relief to local governments that conduct emergency measures in response to releases or threats of releases of hazardous substances, pollutants, or contaminants. The intent of this program is to supply reimbursements of up to $25,000 per incident to the most deserving applicants, specifically local governments, for responses that exceed funds normally available for temporary emergency measures. These monies provide greatly needed support when potentially responsible party (PRP) searches and other cost recovery efforts fail. The standards and the approach for this program are set forth in 40 CFR Part 310, and are consistent with the overall policies and goals of the Superfund program. The maximum amount allocated to the reimbursement program is equal to 0.1 percent of the total amount appropriated for the Superfund, or approximately $1.7 million per year. A major focus of this program is to make known the availability of these funds for reimbursement to local governments in need of financial assistance. This paper highlights the features of this program, illustrates the types of incidents that have been awarded reimbursement, and describes common mistakes to be avoided when applying for reimbursement.

  17. EPA`s Local Governments Reimbursement Program

    SciTech Connect (OSTI)

    Zeller, E.; Ferguson, J. [Environmental Protection Agency, Washington, DC (United States). Emergency Response Division; Catalano, J.; Lally, R. [Booz Allen and Hamilton, McLean, VA (United States)

    1995-12-31T23:59:59.000Z

    Under the Superfund Amendments and Reauthorization Act (SARA), section 123 of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), Congress enacted the Local Governments Reimbursement (LGR) Program. The program`s goal is to provide financial relief to local governments that conduct emergency measures in response to releases or threats of releases of hazardous substances, pollutants, or contaminants. The intent of this program is to supply reimbursements of up to $25,000 per incident to the most deserving applicants, specifically local governments, for responses that exceed funds normally available for temporary emergency measures. These monies provide greatly needed support when potentially responsible party (PRP) searches and other cost-recovery efforts fail. The standards and the approach for this program are set forth in 40 CFR Part 310, and are consistent with the overall policies and goals of the Superfund program. The maximum amount allocated to the reimbursement program is equal to 0.1 percent of the total amount appropriated for the Superfund, or approximately $1.7 million per year. A major focus of this program is to make known the availability of these funds for reimbursement to local governments in need of financial assistance. This paper highlights the features of this program, illustrates the types of incidents that have been awarded reimbursement, and describes common mistakes to be avoided when applying for reimbursement.

  18. CLIMATE CHANGE ADAPTATIONS FOR LOCAL WATER MANAGEMENT

    E-Print Network [OSTI]

    CLIMATE CHANGE ADAPTATIONS FOR LOCAL WATER MANAGEMENT IN THE SAN FRANCISCO BAY AREA A White Paper from the California Energy Commission's California Climate Change Center JULY 2012 CEC Climate change will affect both sea level and the temporal and spatial distribution of runoff

  19. Rescheduling for Locality in Sparse Matrix Computations

    E-Print Network [OSTI]

    Strout, Michelle Mills

    . The Finite Element Method (FEM) is a numerical technique used in scien- ti#12;c applications such as Stress in order to improve the data locality in scienti#12;c applications such as Finite Element Analysis Analysis, Heat Transfer, and Fluid Flow. In FEM the physical domain being modeled is discretized

  20. Estimating Vehicle Miles Traveled on Local Roads

    E-Print Network [OSTI]

    Qian, Jiayu

    2013-11-07T23:59:59.000Z

    This research presents a new method to estimate the local road vehicle miles traveled (VMT) with the concept of betweenness centrality. Betweenness centrality is a measure of a node’s or link’s centrality on a network that has been applied popularly...

  1. Local gravitational physics of the Hubble expansion

    E-Print Network [OSTI]

    Sergei Kopeikin

    2015-01-21T23:59:59.000Z

    We study physical consequences of the Hubble expansion of FLRW manifold on measurement of space, time and light propagation in the local inertial frame. We analyse the solar system radar ranging and Doppler tracking experiments, and time synchronization. FLRW manifold is covered by global coordinates (t,y^i), where t is the cosmic time coinciding with the proper time of the Hubble observers. We introduce local inertial coordinates x^a=(x^0,x^i) in the vicinity of a world line of a Hubble observer with the help of a special conformal transformation. The local inertial metric is Minkowski flat and is materialized by the congruence of time-like geodesics of static observers being at rest with respect to the local spatial coordinates x^i. We consider geodesic motion of test particles and notice that the local coordinate time x^0=x^0(t) taken as a parameter along the world line of particle, is a function of the Hubble's observer time t. This function changes smoothly from x^0=t for a particle at rest (observer's clock), to x^0=t+1/2 Ht^2 for photons, where H is the Hubble constant. Thus, motion of a test particle is non-uniform when its world line is parametrized by time t. NASA JPL Orbit Determination Program presumes that motion of light (after the Shapiro delay is excluded) is uniform with respect to the time t but it does not comply with the non-uniform motion of light on cosmological manifold. For this reason, the motion of light in the solar system analysed with the Orbit Determination Program appears as having a systematic blue shift of frequency, of radio waves circulating in the Earth-spacecraft radio link. The magnitude of the anomalous blue shift of frequency is proportional to the Hubble constant H that may open an access to the measurement of this fundamental cosmological parameter in the solar system radiowave experiments.

  2. LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR SPENCER BLOCH AND H

    E-Print Network [OSTI]

    Bloch, Spencer

    LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR D-MODULES SPENCER BLOCH AND H #19; EL #18; ENE ESNAULT To Armand Borel, in memoriam Abstract. Local Fourier transforms, analogous to the `-adic local Fourier if a certain in#12;nitesimal rigidity condition is satis#12;ed. As in [12], the argument uses local Fourier

  3. Local rollback for fault-tolerance in parallel computing systems

    DOE Patents [OSTI]

    Blumrich, Matthias A. (Yorktown Heights, NY); Chen, Dong (Yorktown Heights, NY); Gara, Alan (Yorktown Heights, NY); Giampapa, Mark E. (Yorktown Heights, NY); Heidelberger, Philip (Yorktown Heights, NY); Ohmacht, Martin (Yorktown Heights, NY); Steinmacher-Burow, Burkhard (Boeblingen, DE); Sugavanam, Krishnan (Yorktown Heights, NY)

    2012-01-24T23:59:59.000Z

    A control logic device performs a local rollback in a parallel super computing system. The super computing system includes at least one cache memory device. The control logic device determines a local rollback interval. The control logic device runs at least one instruction in the local rollback interval. The control logic device evaluates whether an unrecoverable condition occurs while running the at least one instruction during the local rollback interval. The control logic device checks whether an error occurs during the local rollback. The control logic device restarts the local rollback interval if the error occurs and the unrecoverable condition does not occur during the local rollback interval.

  4. TechNotes November 2014www.ll.mit.edu The detection and localization of gas

    E-Print Network [OSTI]

    Williams, Brian C.

    such as methane from leaking natural gas pipelines or nitrogen oxides from failing electrical equipment requireTechNotes November 2014www.ll.mit.edu The detection and localization of gas releases high sensitivity to the target gas and insensitivity to non-target gases. Infrared (IR) absorption

  5. A Localized Algorithm for Parallel Association Mining \\Lambda Mohammed Javeed Zaki, Srinivasan Parthasarathy, and Wei Li

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    a reduction at the end of each pass to construct the global patterns, thus incurring high synchronization cost. In this paper we describe a new parallel association min­ ing algorithm. Our algorithm is a result of detailed is local to each processor. After the initial set­up phase, the algorithm eliminates the need for further

  6. A Localized Algorithm for Parallel Association Mining Mohammed Javeed Zaki, Srinivasan Parthasarathy, and Wei Li

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    a reduction at the end of each pass to construct the global patterns, thus incurring high synchronization cost. In this paper we describe a new parallel association min- ing algorithm. Our algorithm is a result of detailed is local to each processor. After the initial set-up phase, the algorithm eliminates the need for further

  7. 2D Simultaneous Localization And Mapping for Micro Air Vehicles Adrien Angeli1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , heavy weight and high energy consumption. Instead, vision seems to be a good alternative: it is cheap2D Simultaneous Localization And Mapping for Micro Air Vehicles Adrien Angeli1 David Filliat2 St to shift from human-controlled aircrafts to partially-autonomous flying agents. Today, one of the main

  8. A Fuzzy Logic-Based Approach for Node Localization in Mobile Sensor Networks

    E-Print Network [OSTI]

    Chenji Jayanth, Harshavardhan

    2011-02-22T23:59:59.000Z

    and signal interference. We propose FuzLoc, a range-based, anchor-based, fuzzy logic enabled system system for localization. Quantities like RSS and distance are transformed into linguistic variables such as Low, Medium, High etc. by binning. The location...

  9. EULERIANLAGRANGIAN LOCALIZED ADJOINT METHODS FOR TRANS PORT OF NUCLEARWASTE CONTAMINATION IN POROUS MEDIA

    E-Print Network [OSTI]

    Ewing, Richard E.

    EULERIAN­LAGRANGIAN LOCALIZED ADJOINT METHODS FOR TRANS­ PORT OF NUCLEAR­WASTE CONTAMINATION­ creasingly threatened by organic, inorganic, and radioactive pollutants as well as high­level nuclear waste developed for use by the Nuclear Regulatory Commission to analyze deep geologic nuclear waste disposal

  10. A Fuzzy Logic-Based Approach for Node Localization in Mobile Sensor Networks 

    E-Print Network [OSTI]

    Chenji Jayanth, Harshavardhan

    2011-02-22T23:59:59.000Z

    and signal interference. We propose FuzLoc, a range-based, anchor-based, fuzzy logic enabled system system for localization. Quantities like RSS and distance are transformed into linguistic variables such as Low, Medium, High etc. by binning. The location...

  11. Analysis of waste package environment as related to initiation and propagation of localized corrosion

    SciTech Connect (OSTI)

    Walton, J.C.; Sridhar, N.; Cragnolino, G.; Nair, P. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

    1993-12-31T23:59:59.000Z

    Models are presented for prediction of waste package lifetime for the proposed high-level nuclear waste repository located at Yucca Mountain, Nevada. The waste package environment is expected to range from saturated, highly-alkaline brine to bicarbonate waters of low ionic strength. Localized corrosion will be predicted by comparing predicted corrosion potentials of the container with critical potentials for pitting and crevice corrosion. The critical potentials will be estimated by a combined program of experiments and mechanistic modeling.

  12. The Local Variational Multiscale Method for Turbulence Simulation.

    SciTech Connect (OSTI)

    Collis, Samuel Scott; Ramakrishnan, Srinivas

    2005-05-01T23:59:59.000Z

    Accurate and efficient turbulence simulation in complex geometries is a formidable chal-lenge. Traditional methods are often limited by low accuracy and/or restrictions to simplegeometries. We explore the merger of Discontinuous Galerkin (DG) spatial discretizationswith Variational Multi-Scale (VMS) modeling, termed Local VMS (LVMS), to overcomethese limitations. DG spatial discretizations support arbitrarily high-order accuracy on un-structured grids amenable for complex geometries. Furthermore, high-order, hierarchicalrepresentation within DG provides a natural framework fora prioriscale separation crucialfor VMS implementation. We show that the combined benefits of DG and VMS within theLVMS method leads to promising new approach to LES for use in complex geometries.The efficacy of LVMS for turbulence simulation is assessed by application to fully-developed turbulent channelflow. First, a detailed spatial resolution study is undertakento record the effects of the DG discretization on turbulence statistics. Here, the localhp[?]refinement capabilites of DG are exploited to obtain reliable low-order statistics effi-ciently. Likewise, resolution guidelines for simulating wall-bounded turbulence using DGare established. We also explore the influence of enforcing Dirichlet boundary conditionsindirectly through numericalfluxes in DG which allows the solution to jump (slip) at thechannel walls. These jumps are effective in simulating the influence of the wall commen-surate with the local resolution and this feature of DG is effective in mitigating near-wallresolution requirements. In particular, we show that by locally modifying the numericalviscousflux used at the wall, we are able to regulate the near-wall slip through a penaltythat leads to improved shear-stress predictions. This work, demonstrates the potential ofthe numerical viscousflux to act as a numerically consistent wall-model and this successwarrents future research.As in any high-order numerical method some mechanism is required to control aliasingeffects due to nonlinear interactions and to ensure nonlinear stability of the method. Inthis context, we evaluate the merits of two approaches to de-aliasing -- spectralfilteringand polynomial dealiasing. While both approaches are successful, polynomial-dealiasingis found to be better suited for use in large-eddy simulation. Finally, results using LVMSare reported and show good agreement with reference direct numerical simulation therebydemonstrating the effectiveness of LVMS for wall-bounded turbulence. This success pavesthe way for future applications of LVMS to more complex turbulentflows.3

  13. Scuola sullo Sviluppo Locale School on Local Development Universit di Trento University of Trento

    E-Print Network [OSTI]

    . Organi di governo 5. Il Direttivo 6. Il Coordinatore della Scuola 7. Il Collegio dei Docenti 8 locale in un ampio contesto. #12;4 Art. 4 ­ ORGANI DI GOVERNO 1. L'organizzazione e il coordinamento

  14. Solar steam generation by heat localization

    E-Print Network [OSTI]

    Ghasemi, Hadi

    Currently, steam generation using solar energy is based on heating bulk liquid to high temperatures. This approach requires either costly high optical concentrations leading to heat loss by the hot bulk liquid and heated ...

  15. 2013 Fall : Highly Distinguished Honors Highly Distinguished

    E-Print Network [OSTI]

    Kasman, Alex

    Anderson Chelsea Mariah Highly Distinguished Anderson Madison Olivia Highly Distinguished Andrews James Askew Mary Frances Highly Distinguished Augustine Andrew William Highly Distinguished Austin Adrian Bailes Mary Elizabeth Highly Distinguished Bailey Erika Leigh Highly Distinguished Bailey Margaret

  16. Study of Local Reconnection Physics in a Laboratory Plasma

    SciTech Connect (OSTI)

    Hantao Ji; Troy Carter; Scott Hsu; Masaaki Yamada

    2001-06-11T23:59:59.000Z

    A short review of physics results obtained in the Magnetic Reconnection Experiment (MRX) is given with an emphasis on the local features of magnetic reconnection in a controlled environment. Stable two-dimensional current sheets are formed and sustained by induction using two internal coils. The observed reconnection rates are found to be quantitatively consistent with a generalized Sweet-Parker model which incorporates compressibility, unbalanced upstream-downstream pressure, and the effective resistivity. The latter is significantly enhanced over its classical values in the low collisionality regime. Strong local ion heating is measured by an optical probe during the reconnection process, and at least half of the increased ion energy must be due to nonclassical processes, consistent with the resistivity enhancement. Characteristics of high-frequency electrostatic and electromagnetic fluctuations detected in the current sheet suggest presence of the lower-hybrid-drift-like waves with significant magnetic components. The detailed structures of the current sheet are measured and compared with Harris theory and two-fluid theory.

  17. Local correlations in the super-Tonks-Girardeau gas

    SciTech Connect (OSTI)

    Kormos, M.; Trombettoni, A. [SISSA and INFN, Sezione di Trieste, via Bonomea 265, I-34136 Trieste (Italy); Mussardo, G. [SISSA and INFN, Sezione di Trieste, via Bonomea 265, I-34136 Trieste (Italy); International Centre for Theoretical Physics (ICTP), Strada Costiera 11, I-34151, Trieste (Italy)

    2011-01-15T23:59:59.000Z

    We study the local correlations in the super Tonks-Girardeau gas, a highly excited, strongly correlated state obtained in quasi-one-dimensional Bose gases by tuning the scattering length to large negative values using a confinement-induced resonance. Exploiting a connection with a relativistic field theory, we obtain results for the two-body and three-body local correlators at zero and finite temperature. At zero temperature, our result for the three-body correlator agrees with the extension of the results of Cheianov et al. [Phys. Rev. A 73, 051604(R) (2006)], obtained for the ground state of the repulsive Lieb-Liniger gas, to the super-Tonks-Girardeau state. At finite temperature, we obtain that the three-body correlator has a weak dependence on temperature up to the degeneracy temperature T{sub D}. We also find that, for temperatures larger than T{sub D}, the values of the three-body correlator for the super-Tonks-Girardeau gas and the corresponding repulsive Lieb-Liniger gas are rather similar, even for relatively small couplings.

  18. Tensor gauge field localization in branes

    SciTech Connect (OSTI)

    Tahim, M. O. [Departamento de Fisica, Universidade Federal do Ceara, C.P. 6030, 60455-760 Fortaleza, Ceara (Brazil); Departamento de Ciencias da Natureza, Faculdade de Ciencias, Educacao e Letras do Sertao Central (FECLESC), Universidade Estadual do Ceara, 63900-000 Quixada, Ceara (Brazil); Cruz, W. T. [Departamento de Fisica, Universidade Federal do Ceara, C.P. 6030, 60455-760 Fortaleza, Ceara (Brazil); Centro Federal de Educacao Tecnologica do Ceara (CEFETCE), Unidade Descentralizada de Juazeiro do Norte, 63040-000 Juazeiro do Norte, Ceara (Brazil); Almeida, C. A. S. [Departamento de Fisica, Universidade Federal do Ceara, C.P. 6030, 60455-760 Fortaleza, Ceara (Brazil)

    2009-04-15T23:59:59.000Z

    In this work we study localization of a Kalb-Ramond tensorial gauge field on a membrane described by real scalar fields. The membrane is embedded in an AdS-type five-dimensional bulk space, which mimics a Randall-Sundrum scenario. First, we consider a membrane described by only a single real scalar field. In that scenario we find that there is no localized tensorial zero mode. When we take into account branes described by two real scalar fields with internal structures, we obtain again a nonlocalized zero mode for a Kalb-Ramond tensorial gauge field. After modifying our model of one single scalar field by coupling the dilaton to the Kalb-Ramond field, we find that this result is changed. Furthermore, we analyze Kaluza-Klein massive modes and resonance structures.

  19. Direct evidence of strong local ferroelectric ordering in a thermoelectric semiconductor

    SciTech Connect (OSTI)

    Aggarwal, Leena; Sekhon, Jagmeet S.; Arora, Ashima; Sheet, Goutam, E-mail: goutam@iisermohali.ac.in [Department of Physical Sciences, Indian Institute of Science Education and Research Mohali (IISER M), Sector 81, S. A. S. Nagar, Manauli PO-140306 (India); Guin, Satya N.; Negi, Devendra S.; Datta, Ranjan; Biswas, Kanishka, E-mail: kanishka@jncasr.ac.in [New Chemistry Unit and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)

    2014-09-15T23:59:59.000Z

    It is thought that the proposed new family of multi-functional materials, namely, the ferroelectric thermoelectrics may exhibit enhanced functionalities due to the coupling of the thermoelectric parameters with ferroelectric polarization in solids. Therefore, the ferroelectric thermoelectrics are expected to be of immense technological and fundamental significance. As a first step towards this direction, it is most important to identify the existing high performance thermoelectric materials exhibiting ferroelectricity. Herein, through the direct measurement of local polarization switching, we show that the recently discovered thermoelectric semiconductor AgSbSe{sub 2} has local ferroelectric ordering. Using piezo-response force microscopy, we demonstrate the existence of nanometer scale ferroelectric domains that can be switched by external electric field. These observations are intriguing as AgSbSe{sub 2} crystalizes in cubic rock-salt structure with centro-symmetric space group (Fm–3m), and therefore, no ferroelectricity is expected. However, from high resolution transmission electron microscopy measurement, we found the evidence of local superstructure formation which, we believe, leads to local distortion of the centro-symmetric arrangement in AgSbSe{sub 2} and gives rise to the observed ferroelectricity. Stereochemically active 5S{sup 2} lone-pair of Sb may also give rise to local structural distortion thereby creating ferroelectricity in AgSbSe{sub 2}.

  20. State and Local Financial Relations in Texas.

    E-Print Network [OSTI]

    Bradshaw, H. C.

    1942-01-01T23:59:59.000Z

    by the various auditing firms. There are a number of units, however, which have prepared specifications showing exactly what was to be done by any auditor who might be em- ployed. The first State Auditor also prepared specifications for a detailed audit... of the problem. This bulletin outlines the State and local relations growing out of the general laws respecting budgeting, assessing and collecting taxes, account- ing, auditing, public reporting, and the management of debts. In addi- tion, contributions...

  1. Energy localization in two chaotically coupled systems

    E-Print Network [OSTI]

    Johan Gronqvist; Thomas Guhr

    2005-06-08T23:59:59.000Z

    We set up and analyze a random matrix model to study energy localization and its time behavior in two chaotically coupled systems. This investigation is prompted by a recent experimental and theoretical study of Weaver and Lobkis on coupled elastomechanical systems. Our random matrix model properly describes the main features of the findings by Weaver and Lobkis. Due to its general character, our model is also applicable to similar systems in other areas of physics -- for example, to chaotically coupled quantum dots.

  2. Anholonomy and Geometrical Localization in Dynamical Systems

    E-Print Network [OSTI]

    Radha Balakrishnan; Indubala Satija

    2003-03-31T23:59:59.000Z

    We characterize the geometrical and topological aspects of a dynamical system by associating a geometric phase with a phase space trajectory. Using the example of a nonlinear driven damped oscillator, we show that this phase is resilient to fluctuations, responds to all bifurcations in the system, and also finds new geometric transitions. Enriching the phase space description is a novel phenomenon of ``geometrical localization'' which manifests itself as a significant deviation from planar dynamics over a short time interval.

  3. Local semicircle law for random regular graphs

    E-Print Network [OSTI]

    Roland Bauerschmidt; Antti Knowles; Horng-Tzer Yau

    2015-05-26T23:59:59.000Z

    We consider random $d$-regular graphs on $N$ vertices, with degree $d$ at least $(\\log N)^4$. We prove that the Green's function of the adjacency matrix and the Stieltjes transform of its empirical spectral measure are well approximated by Wigner's semicircle law, down to the optimal scale given by the typical eigenvalue spacing (up to a logarithmic correction). Aside from well-known consequences for the local eigenvalue distribution, this result implies the complete delocalization of all eigenvectors.

  4. Local temperature for dynamical black holes

    E-Print Network [OSTI]

    Sean A. Hayward; R. Di Criscienzo; M. Nadalini; L. Vanzo; S. Zerbini

    2008-12-13T23:59:59.000Z

    A local Hawking temperature was recently derived for any future outer trapping horizon in spherical symmetry, using a Hamilton-Jacobi tunneling method, and is given by a dynamical surface gravity as defined geometrically. Descriptions are given of the operational meaning of the temperature, in terms of what observers measure, and its relation to the usual Hawking temperature for static black holes. Implications for the final fate of an evaporating black hole are discussed.

  5. High e

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football High School football Fancy footworke ne rgy data s am

  6. Local asymptotic normality in quantum statistics

    E-Print Network [OSTI]

    Madalin Guta; Anna Jencova

    2007-05-24T23:59:59.000Z

    The theory of local asymptotic normality for quantum statistical experiments is developed in the spirit of the classical result from mathematical statistics due to Le Cam. Roughly speaking, local asymptotic normality means that the family varphi_{\\theta_{0}+ u/\\sqrt{n}}^{n} consisting of joint states of n identically prepared quantum systems approaches in a statistical sense a family of Gaussian state phi_{u} of an algebra of canonical commutation relations. The convergence holds for all "local parameters" u\\in R^{m} such that theta=theta_{0}+ u/sqrt{n} parametrizes a neighborhood of a fixed point theta_{0}\\in Theta\\subset R^{m}. In order to prove the result we define weak and strong convergence of quantum statistical experiments which extend to the asymptotic framework the notion of quantum sufficiency introduces by Petz. Along the way we introduce the concept of canonical state of a statistical experiment, and investigate the relation between the two notions of convergence. For reader's convenience and completeness we review the relevant results of the classical as well as the quantum theory.

  7. Subsystem codes with spatially local generators

    SciTech Connect (OSTI)

    Bravyi, Sergey [IBM T. J. Watson Research Center, Yorktown Heights, New York 10598 (United States)

    2011-01-15T23:59:59.000Z

    We study subsystem codes whose gauge group has local generators in two-dimensional (2D) geometry. It is shown that there exists a family of such codes defined on lattices of size LxL with the number of logical qubits k and the minimum distance d both proportional to L. The gauge group of these codes involves only two-qubit generators of type XX and ZZ coupling nearest-neighbor qubits (and some auxiliary one-qubit generators). Our proof is not constructive as it relies on a certain version of the Gilbert-Varshamov bound for classical codes. Along the way, we introduce and study properties of generalized Bacon-Shor codes that might be of independent interest. Secondly, we prove that any 2D subsystem [n,k,d] code with spatially local generators obeys upper bounds kd=O(n) and d{sup 2}=O(n). The analogous upper bound proved recently for 2D stabilizer codes is kd{sup 2}=O(n). Our results thus demonstrate that subsystem codes can be more powerful than stabilizer codes under the spatial locality constraint.

  8. Subsystem codes with spatially local generators

    E-Print Network [OSTI]

    Sergey Bravyi

    2010-08-05T23:59:59.000Z

    We study subsystem codes whose gauge group has local generators in the 2D geometry. It is shown that there exists a family of such codes defined on lattices of size LxL with the number of logical qubits k and the minimum distance d both proportional to L. The gauge group of these codes involves only two-qubit generators of type XX and ZZ coupling nearest neighbor qubits (and some auxiliary one-qubit generators). Our proof is not constructive as it relies on a certain version of the Gilbert-Varshamov bound for classical codes. Along the way we introduce and study properties of generalized Bacon-Shor codes which might be of independent interest. Secondly, we prove that any 2D subsystem [n,k,d] code with spatially local generators obeys upper bounds kd=O(n) and d^2=O(n). The analogous upper bound proved recently for 2D stabilizer codes is kd^2=O(n). Our results thus demonstrate that subsystem codes can be more powerful than stabilizer codes under the spatial locality constraint.

  9. Local Polarization Dynamics in Ferroelectric Materials

    SciTech Connect (OSTI)

    Kalinin, Sergei V [ORNL; Morozovska, A. N. [National Academy of Science of Ukraine, Kiev, Ukraine; Chen, L. Q. [Pennsylvania State University; Rodriguez, Brian J [ORNL

    2010-01-01T23:59:59.000Z

    Ferroelectrics and multiferroics have recently emerged as perspective materials for information technology and data storage applications. The combination of extremely narrow domain wall width and the capability to manipulate polarization by electric field opens the pathway towards ultrahigh (>10 TBit/in2) storage densities and small (sub-10 nm) feature sizes. The coupling between polarization and chemical and transport properties enables applications in ferroelectric lithography and electroresistive devices. The progress in these applications, as well as fundamental studies of polarization dynamics and the role of defects and disorder on domain nucleation and wall motion, requires the capability to probe these effects on the nanometer scale. In this review, we summarize recent progress in applications of Piezoresponse Force Microscopy (PFM) for imaging, manipulation, and spectroscopy of ferroelectric switching processes. We briefly introduce the principles and relevant instrumental aspects of PFM, with special emphasis on resolution and information limits. The local imaging studies of domain dynamics, including local switching and relaxation accessed through imaging experiments, and spectroscopic studies of polarization switching, are discussed in detail. Finally, we briefly review the recent progress on photochemical processes on ferroelectric surfaces, the role of surface adsorbates, and imaging and switching in liquids. Beyond classical applications, probing local bias-induced transition dynamics by PFM opens the pathway to studies of the influence of a single defect on electrochemical and solid state processes, thus providing model systems for batteries, fuel cells, and supercapacitor applications.

  10. Defect localization, characterization and reliability assessment in emerging photovoltaic devices.

    SciTech Connect (OSTI)

    Yang, Benjamin Bing-Yeh; Cruz-Campa, Jose Luis; Haase, Gad S.; Tangyunyong, Paiboon; Cole, Edward Isaac,; Okandan, Murat; Nielson, Gregory N.

    2014-04-01T23:59:59.000Z

    Microsystems-enabled photovoltaics (MEPV) can potentially meet increasing demands for light-weight, portable, photovoltaic solutions with high power density and efficiency. The study in this report examines failure analysis techniques to perform defect localization and evaluate MEPV modules. CMOS failure analysis techniques, including electroluminescence, light-induced voltage alteration, thermally-induced voltage alteration, optical beam induced current, and Seabeck effect imaging were successfully adapted to characterize MEPV modules. The relative advantages of each approach are reported. In addition, the effects of exposure to reverse bias and light stress are explored. MEPV was found to have good resistance to both kinds of stressors. The results form a basis for further development of failure analysis techniques for MEPVs of different materials systems or multijunction MEPVs. The incorporation of additional stress factors could be used to develop a reliability model to generate lifetime predictions for MEPVs as well as uncover opportunities for future design improvements.

  11. Anne Arundel County- High Performance Dwelling Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings if they choose to do so. In October 2010 Anne Arundel...

  12. Howard County- High Performance and Green Building Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings and energy conservation devices (Md Code: Property Tax §...

  13. Montgomery County- High Performance Building Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings if they choose to do so. Montgomery County has...

  14. TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    1 TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS By: J. A. Kuhn1 and J. G. Zornberg for use in highly plastic clay. The clay used for experimentation was taken locally from the Eagle Ford Ford Clay is determined. INTRODUCTION The progression of wetting and drying fronts in highly plastic

  15. High Performance Computing with a Conservative Spectral Boltzmann Solver

    E-Print Network [OSTI]

    High Performance Computing with a Conservative Spectral Boltzmann Solver Jeffrey R. Haack and Irene the structure of the collisional formulation for high performance computing environments. The locality in space on high performance computing resources. We also use the improved computational power of this method

  16. Localized Domains of Disoriented Chiral Condensates

    E-Print Network [OSTI]

    B. K. Nandi; T. K. Nayak; B. Mohanty; D. P. Mahapatra; Y. P. Viyogi

    1999-03-12T23:59:59.000Z

    A new method to search for localized domains of disoriented chiral condensates (DCC) has been proposed by utilising the (eta-phi) phase space distributions of charged particles and photons. Using the discrete wavelet transformation (DWT) analysis technique, it has been found that the presence of DCC domains broadens the distribution of wavelet coefficients in comparison to that of normal events. Strength contours have been derived from the differences in rms deviations of these distributions by taking into account the size of DCC domains and the probability of DCC production in ultra-relativistic heavy ion collisions. This technique can be suitably adopted to experiments measuring multiplicities of charged particles and photons.

  17. Optimal generation of entanglement under local control

    E-Print Network [OSTI]

    Raffaele Romano; Alessio Del Fabbro

    2007-07-11T23:59:59.000Z

    We study the optimal generation of entanglement between two qubits subject to local unitary control. With the only assumptions of linear control and unitary dynamics, by means of a numerical protocol based on the variational approach (Pontryagin's Minimum Principle), we evaluate the optimal control strategy leading to the maximal achievable entanglement in an arbitrary interaction time, taking into account the energy cost associated to the controls. In our model we can arbitrarily choose the relative weight between a large entanglement and a small energy cost.

  18. Fermion localization on a split brane

    SciTech Connect (OSTI)

    Chumbes, A. E. R.; Vasquez, A. E. O.; Hott, M. B. [UNESP Univ Estadual Paulista - Campus de Guaratingueta - DFQ. Av. Dr. Ariberto Pereira Cunha, 333 12516-410 Guaratingueta SP Brasil (Brazil)

    2011-05-15T23:59:59.000Z

    In this work we analyze the localization of fermions on a brane embedded in five-dimensional, warped and nonwarped, space-time. In both cases we use the same nonlinear theoretical model with a nonpolynomial potential featuring a self-interacting scalar field whose minimum energy solution is a soliton (a kink) which can be continuously deformed into a two-kink. Thus a single brane splits into two branes. The behavior of spin 1/2 fermions wave functions on the split brane depends on the coupling of fermions to the scalar field and on the geometry of the space-time.

  19. Statistical density modification using local pattern matching

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Mail Stop M888, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2003-10-01T23:59:59.000Z

    Statistical density modification can make use of local patterns of density found in protein structures to improve crystallographic phases. A method for improving crystallographic phases is presented that is based on the preferential occurrence of certain local patterns of electron density in macromolecular electron-density maps. The method focuses on the relationship between the value of electron density at a point in the map and the pattern of density surrounding this point. Patterns of density that can be superimposed by rotation about the central point are considered equivalent. Standard templates are created from experimental or model electron-density maps by clustering and averaging local patterns of electron density. The clustering is based on correlation coefficients after rotation to maximize the correlation. Experimental or model maps are also used to create histograms relating the value of electron density at the central point to the correlation coefficient of the density surrounding this point with each member of the set of standard patterns. These histograms are then used to estimate the electron density at each point in a new experimental electron-density map using the pattern of electron density at points surrounding that point and the correlation coefficient of this density to each of the set of standard templates, again after rotation to maximize the correlation. The method is strengthened by excluding any information from the point in question from both the templates and the local pattern of density in the calculation. A function based on the origin of the Patterson function is used to remove information about the electron density at the point in question from nearby electron density. This allows an estimation of the electron density at each point in a map, using only information from other points in the process. The resulting estimates of electron density are shown to have errors that are nearly independent of the errors in the original map using model data and templates calculated at a resolution of 2.6 Å. Owing to this independence of errors, information from the new map can be combined in a simple fashion with information from the original map to create an improved map. An iterative phase-improvement process using this approach and other applications of the image-reconstruction method are described and applied to experimental data at resolutions ranging from 2.4 to 2.8 Å.

  20. Localization principle in SUSY gauge theories

    E-Print Network [OSTI]

    Hosomichi, Kazuo

    2015-01-01T23:59:59.000Z

    Localization principle is a powerful analytic tool in supersymmetric gauge theories which enables one to perform supersymmetric path integrals explicitly. Many important formulae have been obtained, and they led to a major breakthrough in the understanding of gauge theories at strong coupling as well as the dynamics of branes in M-theory. Some of those results are reviewed, focusing especially on Pestun's solution to four-dimensional N=2 supersymmetric gauge theories on S^4 and the subsequent developments on three or four-dimensional gauge theories on spheres.

  1. The key role of local elected officials

    SciTech Connect (OSTI)

    Edwards, K. [Village of Newburgh Heights, OH (United States); Koh, B. [B. Koh, B.Koh & Associates, Inc., Owings Mills, MD (United States)

    1996-12-31T23:59:59.000Z

    Many factions have a stake in the cleanup of radioactively contaminated properties. Often, the interests of these groups conflict, and the ensuing controversy leads to long delays in the decommissioning. The authors were deeply involved in one such project. Their experience revealed that local elected officials are in the best position to take a leadership role among the parties. Elected officials can use the authority of their office to represent the affected constituents and get action from regulators, legislators and the parties responsible for the cleanup.

  2. Chapter 52.1, Local Contract Clauses

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1. Feedstock & Production ChallengeEfficient2.1, Local

  3. Local Grant Program | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and WindLightingLinthicum,LittleLivonia, NewBiomass Product:Local

  4. Local Rebate Program | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and WindLightingLinthicum,LittleLivonia, NewBiomassLocal Rebate

  5. California Local Air Districts | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LP Biomass Facilityin ChartsQuality Act Jump to:CaliforniaLocal

  6. NREL: Technology Deployment - State and Local Governments

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

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

  7. Washington, D.C. - Local Information | NREL

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

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

  8. Localization and Coordination in Decentralized Multi-Robot Systems

    E-Print Network [OSTI]

    Sun, Yu

    Localization and Coordination in Decentralized Multi-Robot Systems Patricia Kristine Sheridan Supervisor: Professor B. Benhabib Department of Mechanical and Industrial Engineering University of Toronto March, 2009 #12;Localization and Coordination in Decentralized Multi-Robot Systems ABSTRACT

  9. EECBG Success Story: Massachusetts Middle School Goes Local for...

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

    Massachusetts Middle School Goes Local for PV Solar Energy System EECBG Success Story: Massachusetts Middle School Goes Local for PV Solar Energy System August 13, 2010 - 11:21am...

  10. Local Promise for Climate Mitigation: An Empirical Assessment

    E-Print Network [OSTI]

    Feiock, Richard C.; Outka, Uma

    2012-01-01T23:59:59.000Z

    This interdisciplinary work contributes empirical grounding to the growing literature in law and public policy on local governments and climate mitigation. Much of the recent scholarship presents an optimistic view of the potential in local climate...

  11. Argonne, Fermi national laboratories to welcome local businesses...

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

    than 140 people will be in attendance representing 84 local small businesses and start-ups. "The labs have not fully tapped their potential to galvanize their local economies,"...

  12. Static and Dynamic Locality Optimizations Using Integer Linear Programming

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    Static and Dynamic Locality Optimizations Using Integer Linear Programming Mahmut Kandemir, Member hierarchies is closely related to the performance of the memory subsystem. Compiler optimizations aimed at improving cache locality are critical in realizing the performance potential of powerful processors

  13. INSTANTANEOUS DAMAGE IDENTIFICATION AND LOCALIZATION THROUGH SPARSE LASER ULTRASONIC SCANNING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    INSTANTANEOUS DAMAGE IDENTIFICATION AND LOCALIZATION THROUGH SPARSE LASER ULTRASONIC SCANNING This study proposes an instantaneous damage identification and localization technique through sparse laser ultrasonic signals are obtained, a damage index (DI) representing the violation of the linear reciprocity

  14. Essays on the economics of local labor markets

    E-Print Network [OSTI]

    Notowidigdo, Matt, 1981-

    2010-01-01T23:59:59.000Z

    This thesis studies the economics of local labor markets. There are three chapters in the thesis, and each chapter studies how economic outcomes are affected by local labor market conditions. The first chapter studies the ...

  15. The Local Board of Health Environmental Health Primer

    E-Print Network [OSTI]

    The Local Board of Health Environmental Health Primer Risk Assessment Factsheet environmental,M.,andToscano,W.(Eds).(2007).Risk Assessment for Environmental Health. · NationalAssociationofLocalBoardsofHealth.(2011).RiskAssessment assessment

  16. Optimal Path Generation for Monocular Simultaneous Localization and Mapping 

    E-Print Network [OSTI]

    Roorda, Timothy Isaac

    2014-09-01T23:59:59.000Z

    Monocular Simultaneous Localization and Mapping (MonoSLAM), a derivative of Simultaneous Localization and Mapping (SLAM), is a navigation method for autonomous vehicles that uses only an inertial measurement unit and a camera to map the environment...

  17. Localization at low energies for attractive Poisson random Schrödinger operators

    E-Print Network [OSTI]

    François Germinet; Peter D. Hislop; Abel Klein

    2006-03-13T23:59:59.000Z

    We prove exponential and dynamical localization at low energies for the Schr\\"odinger operator with an attractive Poisson random potential in any dimension. We also conclude that the eigenvalues in that spectral region of localization have finite multiplicity.

  18. Three essays in the economics of local public goods

    E-Print Network [OSTI]

    Lutz, Byron F

    2005-01-01T23:59:59.000Z

    This thesis is a collection of three empirical essays on the economics of local public goods. Chapter One examines the marginal propensity of local governments to spend out of lump- sum grant income. Economic theory predicts ...

  19. Local architectural identities within modernization context in southern China

    E-Print Network [OSTI]

    Zhen, Lian Quan

    1996-01-01T23:59:59.000Z

    In the processing of modernization, local architecture identities are diminishing in Kaiping, my home county in Canton Province, China. This thesis is searching for new architectural features that are based on the local ...

  20. Localization with witnesses Arun Saha and Mart Molle

    E-Print Network [OSTI]

    Molle, Mart

    Localization with witnesses Arun Saha and Mart Molle Department of Computer Science and Engineering University of California, Riverside Riverside, CA, 92521, USA saha, mart¡ @cs.ucr.edu Abstract Localization

  1. Welcoming the Outsider: Local Construction of the Law towards Immigrants

    E-Print Network [OSTI]

    Williams, Linda M.

    2013-08-31T23:59:59.000Z

    This dissertation examines the local construction of law on the street regarding immigrants. Local agencies play a key role in immigration enforcement and in providing services to immigrants. They are increasingly the face ...

  2. Optimal Path Generation for Monocular Simultaneous Localization and Mapping

    E-Print Network [OSTI]

    Roorda, Timothy Isaac

    2014-09-01T23:59:59.000Z

    Monocular Simultaneous Localization and Mapping (MonoSLAM), a derivative of Simultaneous Localization and Mapping (SLAM), is a navigation method for autonomous vehicles that uses only an inertial measurement unit and a camera to map the environment...

  3. applying locally condensed: Topics by E-print Network

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

    23 24 25 Next Page Last Page Topic Index 1 Localized Domains of Disoriented Chiral Condensates Nuclear Experiment (arXiv) Summary: A new method to search for localized domains of...

  4. Overlapping local/global iteration framework for whole-core transport solution

    SciTech Connect (OSTI)

    Cho, N. Z.; Yuk, S.; Yoo, H. J.; Yun, S. [Korea Advanced Inst. of Science and Technology KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 (Korea, Republic of)

    2012-07-01T23:59:59.000Z

    In current practice of reactor design analysis, whole-core diffusion nodal method is used in which nodal parameters are provided by single-assembly lattice physics calculation with net current zero boundary condition. Thus, the whole-core solution is not transport, because the inter-assembly transport effect is not incorporated. In this paper, the overlapping local/global iteration framework is described that removes the limitation of the current method. It consists of two-level iterative computations: half-node overlapping local problems embedded in a global problem. The local problem can employ fine-group deterministic or continuous-energy stochastic (Monte Carlo) transport methods, while the global problem is an equivalent coarse-group transport model based on p-CMFD methodology. The method is tested on several highly heterogeneous multi-slab problems with encouraging results. (authors)

  5. Local Interactions and Protein Folding: A 3D Off-Lattice Approach

    E-Print Network [OSTI]

    Anders Irbäck; Carsten Peterson; Frank Potthast; Ola Sommelius

    1996-10-10T23:59:59.000Z

    The thermodynamic behavior of a three-dimensional off-lattice model for protein folding is probed. The model has only two types of residues, hydrophobic and hydrophilic. In absence of local interactions, native structure formation does not occur for the temperatures considered. By including sequence independent local interactions, which qualitatively reproduce local properties of functional proteins, the dominance of a native state for many sequences is observed. As in lattice model approaches, folding takes place by gradual compactification, followed by a sequence dependent folding transition. Our results differ from lattice approaches in that bimodal energy distributions are not observed and that high folding temperatures are accompanied by relatively low temperatures for the peak of the specific heat. Also, in contrast to earlier studies using lattice models, our results convincingly demonstrate that one does not need more than two types of residues to generate sequences with good thermodynamic folding properties in three dimensions.

  6. The local energy production rates of GRB photons and of UHECRs

    E-Print Network [OSTI]

    Eli Waxman

    2010-10-26T23:59:59.000Z

    In a recent analysis it was found that the local (z=0) rate at which gamma-ray bursts (GRBs) produce energy in 1 MeV photons, Q_GRB(z=0), is 300 times lower than the local energy production rate in ultra-high energy cosmic-rays. This may appear to be in contradiction with earlier results, according to which Q_GRB(z=0) is similar to the local energy production rate in >10^{19} eV cosmic-rays, Q_{10EeV}(z=0). This short (1 page) note identifies the origin of the apparent discrepancy and shows that Q_GRB(z=0) \\sim Q_{10EeV}(z=0) holds.

  7. Sobolev inequality for localization of pseudo-relativistic energy

    E-Print Network [OSTI]

    A. A. Balinsky; A. E. Tyukov

    2005-08-18T23:59:59.000Z

    In this article we present Sobolev-type inequalities for the localization of pseudo-relativistic energy.

  8. Exploration of very high gradient cavities

    SciTech Connect (OSTI)

    Grigory Eremeev

    2011-07-01T23:59:59.000Z

    Several of the 9-cell ILC cavities processed at Jlab within ongoing ILC R&D program have shown interesting behavior at high fields, such as mode mixing and sudden field emission turn-on during quench. Equipped with thermometry and oscillating superleak transducer (OST) system for quench detection, we couple our RF measurements with local dissipation measurements. In this contribution we report on our findings with high gradient SRF cavities.

  9. Charged Local Defects in Extended Systems

    SciTech Connect (OSTI)

    Schultz, Peter A.

    1999-05-25T23:59:59.000Z

    The conventional approach to treating charged defects in extended systems in first principles calculations is via the supercell approximation using a neutralizing jellium background charge. I explicitly demonstrate shortcomings of this standard approach and discuss the consequences. Errors in the electrostatic potential surface over the volume of a supercell are shown to be comparable to a band gap energy in semiconductor materials, for cell sizes typically used in first principles simulations. I present an alternate method for eliminating the divergence of the Coulomb potential in supercell calculations of charged defects in extended systems that embodies a correct treatment of the electrostatic potential in the local viciniq of the a charged defect, via a mixed boundary condition approach. I present results of first principles calculations of charged vacancies in NaCl that illustrate the importance of polarization effects once an accurate representation of the local potential is obtained. These polarization effects, poorly captured in small supercells, also impact the energetic on the scale of typical band gap energies.

  10. Star Formation Histories in the Local Group

    E-Print Network [OSTI]

    Thomas M. Brown

    2004-07-09T23:59:59.000Z

    Deep color magnitude diagrams extending to the main sequence provide the most direct measure of the detailed star formation history in a stellar population. With large investments of observing time, HST can obtain such data for populations out to 1 Mpc, but its field of view is extremely small in comparison to the size of Local Group galaxies. This limitation severely constrains our understanding of galaxy formation. For example, the largest galaxy in the Local Group, Andromeda, offers an ideal laboratory for studying the formation of large spiral galaxies, but the galaxy shows substructure on a variety of scales, presumably due to its violent merger history. Within its remaining lifetime, HST can only sample a few sight-lines through this complex galaxy. In contrast, a wide field imager could provide a map of Andromeda's halo, outer disk, and tidal streams, revealing the spatially-dependent star formation history in each structure. The same data would enable many secondary studies, such as the age variation in Andromeda's globular cluster system, gigantic samples of variable stars, and microlensing tracers of the galaxy's dark matter distribution.

  11. Non-Locality Distillation is Impossible for Isotropic Quantum Systems

    E-Print Network [OSTI]

    Dejan D. Dukaric

    2011-09-20T23:59:59.000Z

    Non-locality is a powerful resource for various communication and information theoretic tasks, e.g., to establish a secret key between two parties, or to reduce the communication complexity of distributed computing. Typically, the more non-local a system is, the more useful it is as a resource for such tasks. We address the issue of non-locality distillation, i.e., whether it is possible to create a strongly non-local system by local operations on several weakly non-local ones. More specifically, we consider a setting where non-local systems can be realized via measurements on underlying shared quantum states. The hardest instances for non-locality distillation are the isotropic quantum systems: if a certain isotropic system can be distilled, then all systems of the same non-locality can be distilled as well. The main result of this paper is that non-locality cannot be distilled from such isotropic quantum systems. Our results are based on the theory of cross norms defined over the tensor product of certain Banach spaces. In particular, we introduce a single-parameter family of cross norms, which is used to construct a hierarchy of convex sets that are closed under local operations. This hierarchy interpolates between the set of local systems and an approximation to the set of quantum systems.

  12. Codes and Standards Title 24 Energy-Efficient Local Ordinances

    E-Print Network [OSTI]

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 #12;Energy Cost-Effectiveness Study for Local Green Building Ordinances in Climate Zone 6, 12 Standards. The energy requirements of a local green building ordinance are not legally enforceable untilCodes and Standards Title 24 Energy-Efficient Local Ordinances Title: Climate Zone 6 Energy Cost

  13. Sustainable feeding systems based on the use of local resources

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Sustainable feeding systems based on the use of local resources PP Roggero S Bellon M Rosales3 1 of organisation and planning of the use of renewable local resources. The multiple use of a specific feed resource considered as examples of diversification and exploitation of local resources. The integration

  14. A Guide on Local Agriculture for Houstonians Sarita Panchang

    E-Print Network [OSTI]

    Richards-Kortum, Rebecca

    prices, and often meet other local organizations or farmers who are showcasing their own food work around and support local growers, so you go to the grocery store and start examining produce. Local. Organic find the people who grew the food and ask them yourself. Though purchasing food that was produced

  15. Local Fourier analysis for staggered systems of PDEs

    E-Print Network [OSTI]

    MacLachlan, Scott

    Local Fourier analysis for staggered systems of PDEs Scott MacLachlan scott.maclachlan@tufts.edu Tufts University and Kees Oosterlee TU-Delft and CWI April 10, 2008 Local Fourier analysis for staggered of complementary processes · Relaxation · Coarse-grid correction Local Fourier analysis for staggered systems

  16. Sequence-Based Localization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    Sequence-Based Localization in Wireless Sensor Networks Kiran Yedavalli and Bhaskar Krishnamachari Abstract--We introduce a novel sequence-based localization technique for wireless sensor networks. We show that the localization space can be divided into distinct regions that can each be uniquely identified by sequences

  17. Evolving an Indoor Robotic Localization System Based on Wireless Networks

    E-Print Network [OSTI]

    Braun, Torsten

    of indoor robotic localization. We investigate the design and building of an autonomous localization system provides the position of one robot in a space, as in a Cartesian plane, corroborating with the EvoEvolving an Indoor Robotic Localization System Based on Wireless Networks Gustavo Pessin1

  18. Extremely local MR representations: Youngmi Hur1 & Amos Ron2

    E-Print Network [OSTI]

    Maryland at College Park, University of

    Extremely local MR representations: L-CAMP Youngmi Hur1 & Amos Ron2 Workshop on sparse representations: UMD, May 2005 1 Math, UW-Madison 2 CS, UW-Madison #12;Wavelet and framelet constructions History of all local MR representations #12;L-CAMP: Extremely local MR constructions Bird's view of the CAP

  19. Surface Chemistry of 2-Propanol on TiO2(110): Low and High Temperature...

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

    Chemistry of 2-Propanol on TiO2(110): Low and High Temperature Dehydration, Isotope Effects, and Influence of Local Surface Chemistry of 2-Propanol on TiO2(110): Low and High...

  20. Cosmos++: Relativistic Magnetohydrodynamics on Unstructured Grids with Local Adaptive Refinement

    E-Print Network [OSTI]

    Peter Anninos; P. Chris Fragile; Jay D. Salmonson

    2005-09-09T23:59:59.000Z

    A new code and methodology are introduced for solving the general relativistic magnetohydrodynamic (GRMHD) equations in fixed background spacetimes using time-explicit, finite-volume discretization. The code has options for solving the GRMHD equations using traditional artificial-viscosity (AV) or non-oscillatory central difference (NOCD) methods, or a new extended AV (eAV) scheme using artificial-viscosity together with a dual energy-flux-conserving formulation. The dual energy approach allows for accurate modeling of highly relativistic flows at boost factors well beyond what has been achieved to date by standard artificial viscosity methods. It provides the benefit of Godunov methods in capturing high Lorentz boosted flows but without complicated Riemann solvers, and the advantages of traditional artificial viscosity methods in their speed and flexibility. Additionally, the GRMHD equations are solved on an unstructured grid that supports local adaptive mesh refinement using a fully threaded oct-tree (in three dimensions) network to traverse the grid hierarchy across levels and immediate neighbors. A number of tests are presented to demonstrate robustness of the numerical algorithms and adaptive mesh framework over a wide spectrum of problems, boosts, and astrophysical applications, including relativistic shock tubes, shock collisions, magnetosonic shocks, Alfven wave propagation, blast waves, magnetized Bondi flow, and the magneto-rotational instability in Kerr black hole spacetimes.

  1. Local Representation in the Context of Decentralization: Mayors, Citizens, and Local Governance in Latin America

    E-Print Network [OSTI]

    Shockley, Bethany L

    2014-06-06T23:59:59.000Z

    Points ...................................................... 38 2-12 Municipal Income ............................................................................................... 46 2-13 Municipal Expenditures... ........................................................................ 135 4-3 Multi-level Model of Government Effectiveness and Responsiveness in 20 Cantons in Ecuador .......................................................... 138 4-4 Local Government Effectiveness in 30 Municipalities in Ecuador in 2012...

  2. Infrared problem and spatially local observables in electrodynamics

    E-Print Network [OSTI]

    Andrzej Herdegen

    2007-11-14T23:59:59.000Z

    An algebra previously proposed as an asymptotic field structure in electrodynamics is considered in respect of localization properties of fields. Fields are 'spatially local' -- localized in regions resulting as unions of two intersecting (solid) lightcones: a future- and a past-lightcone. This localization remains in concord with the usual idealizations connected with the scattering theory. Fields thus localized naturally include infrared characteristics normally placed at spacelike infinity and form a structure respecting Gauss law. When applied to the description of the radiation of an external classical current the model is free of 'infrared catastrophe'.

  3. INFLUENCE OF LOCAL CAPILLARY TRAPPING ON CONTAINMENT SYSTEM EFFECTIVENESS

    SciTech Connect (OSTI)

    Bryant, Steven

    2014-03-31T23:59:59.000Z

    Immobilization of CO2 injected into deep subsurface storage reservoirs is a critical component of risk assessment for geologic CO2 storage (GCS). Local capillary trapping (LCT) is a recently established mode of immobilization that arises when CO2 migrates due to buoyancy through heterogeneous storage reservoirs. This project sought to assess the amount and extent of LCT expected in storage formations under a range of injection conditions, and to confirm the persistence of LCT if the seal overlying the reservoir were to lose its integrity. Numerical simulation using commercial reservoir simulation software was conducted to assess the influence of injection. Laboratory experiments, modeling and numerical simulation were conducted to assess the effect of compromised seal integrity. Bench-scale (0.6 m by 0.6 m by 0.03 m) experiments with surrogate fluids provided the first empirical confirmation of the key concepts underlying LCT: accumulation of buoyant nonwetting phase at above residual saturations beneath capillary barriers in a variety of structures, which remains immobile under normal capillary pressure gradients. Immobilization of above-residual saturations is a critical distinction between LCT and the more familiar “residual saturation trapping.” To estimate the possible extent of LCT in a storage reservoir an algorithm was developed to identify all potential local traps, given the spatial distribution of capillary entry pressure in the reservoir. The algorithm assumes that the driving force for CO2 migration can be represented as a single value of “critical capillary entry pressure” Pc,entrycrit, such that cells with capillary entry pressure greater/less than Pc,entrycrit act as barriers/potential traps during CO2 migration. At intermediate values of Pc,entrycrit, the barrier regions become more laterally extensive in the reservoir, approaching a percolation threshold while non-barrier regions remain numerous. The maximum possible extent of LCT thus occurs at Pc,entrycrit near this threshold. Testing predictions of this simple algorithm against full-physics simulations of buoyancy-driven CO2 migration support the concept of critical capillary entry pressure. However, further research is needed to determine whether a single value of critical capillary entry pressure always applies and how that value can be determined a priori. Simulations of injection into high-resolution (cells 0.3 m on a side) 2D and 3D heterogeneous domains show two characteristic behaviors. At small gravity numbers (vertical flow velocity much less than horizontal flow velocity) the CO2 fills local traps as well as regions that would act as local barriers if CO2 weremoving only due to buoyancy. When injection ceases, the CO2 migrates vertically to establish large saturations within local traps and residual saturation elsewhere. At large gravity numbers, the CO2 invades a smaller portion of the perforated interval. Within this smaller swept zone the local barriers are not invaded, but local traps are filled to large saturation during injection and remain during post-injection gravity-driven migration. The small gravity number behavior is expected in the region within 100 m of a vertical injection well at anticipated rates of injection for commercial GCS. Simulations of leakage scenarios (through-going region of large permeability imposed in overlying seal) indicate that LCT persists (i.e. CO2 remains held in a large fraction of the local iv traps) and the persistence is independent of injection rate during storage. Simulations of leakage for the limiting case of CO2 migrating vertically from an areally extensive emplacement in the lower portion of a reservoir showed similar strong persistence of LCT. This research has two broad implications for GCS. The first is that LCT can retain a significant fraction of the CO2 stored in a reservoir – above and beyond the residual saturation -- if the overlying seal were to fail. Thus frameworks for risk assessment should be extended to account for LCT. The second implication is that compared to press

  4. Transdermal drug delivery by localized intervention

    E-Print Network [OSTI]

    Weaver, James C.

    Both field-confined skin electroporation and microscissioning offer minimally invasive methods for delivering drugs across skin and nail with minimal sensation. Both methods create high permeability pathways in a pain-free ...

  5. Local momentum space and the vector field

    E-Print Network [OSTI]

    David J. Toms

    2014-08-04T23:59:59.000Z

    The local momentum space expansion for the real vector field is considered. Using Riemann normal coordinates we obtain an expansion of the Feynman Green function up and including terms that are quadratic in the curvature. The results are valid for a non-minimal operator such as that arising from a general Feynman type gauge fixing condition. The result is used to derive the first three terms in the asymptotic expansion for the coincidence limit of the heat kernel without taking the trace, thus obtaining the untraced heat kernel coefficients. The spacetime dimension is kept general before specializing to four dimensions for comparison with previously known results. As a further application we re-examine the anomalous trace of the stress-energy-momentum tensor for the Maxwell field and comment on the gauge dependence.

  6. Constructing optimal local pseudopotentials from first principles

    E-Print Network [OSTI]

    Mi, Wenhui; Ma, Yanming; Miao, Maosheng

    2015-01-01T23:59:59.000Z

    Local pseudopotential (LPP) is an important component of the orbital free density functional theory (OF-DFT), which is a promising large scale simulation method that can still maintain information of electron state in materials. Up to date, LPP is usually extracted from the solid state DFT calculations. It is unclear how to assess its transferability while applying to a much different chemical environment. Here we reveal a fundamental relation between the first principles norm-conserving PP (NCPP) and the LPP. Using the optimized effective potential method developed for exchange functional, we demonstrate that the LPP can be constructed optimally from the NCPP for a large number of elements. Our theory also reveals that the existence of an LPP is intrinsic to the elements, irrespective to the parameters used for the construction. Our method provides a unified method in constructing and assessing LPP in the framework of first principles pseudopotentials.

  7. Segmented nanowires displaying locally controllable properties

    DOE Patents [OSTI]

    Sutter, Eli Anguelova; Sutter, Peter Werner

    2013-03-05T23:59:59.000Z

    Vapor-liquid-solid growth of nanowires is tailored to achieve complex one-dimensional material geometries using phase diagrams determined for nanoscale materials. Segmented one-dimensional nanowires having constant composition display locally variable electronic band structures that are determined by the diameter of the nanowires. The unique electrical and optical properties of the segmented nanowires are exploited to form electronic and optoelectronic devices. Using gold-germanium as a model system, in situ transmission electron microscopy establishes, for nanometer-sized Au--Ge alloy drops at the tips of Ge nanowires (NWs), the parts of the phase diagram that determine their temperature-dependent equilibrium composition. The nanoscale phase diagram is then used to determine the exchange of material between the NW and the drop. The phase diagram for the nanoscale drop deviates significantly from that of the bulk alloy.

  8. Monogamy of Measurement Induced Non-Locality

    E-Print Network [OSTI]

    Ajoy Sen; Debasis Sarkar; Amit Bhar

    2014-05-13T23:59:59.000Z

    Measurement-Induced NonLocality was introduced by Luo and Fu (Phys. Rev. Lett. \\textbf{106}, 120401,(2011)) as a measure of nonlocality in a bipartite state. In this paper we will discuss monogamy property of measurement-induced nonlocality for some three- and four-qubit classes of states. Unlike discord, we find quite surprising results in this situation. Both the GHZ and W states satisfy monogamy relations in the three-qubit case, however, in general there are violations of monogamy relations in both the GHZ-class and W-class states. In case of four-qubit system, monogamy holds for most of the states in the generic class. Four qubit GHZ does not satisfy monogamy relation, but W-state does. We provide several numerical results including counterexamples regarding monogamy nature of measurement induced nonlocality. We will also extend our results of generalized W-class to n-qubit.

  9. Enhanced-locality fiber-optic two-photon-fluorescence live-brain interrogation

    SciTech Connect (OSTI)

    Fedotov, I. V.; Doronina-Amitonova, L. V. [International Laser Center, Physics Department, M.V. Lomonosov Moscow State University, Moscow 119992 (Russian Federation); Russian Quantum Center, ul. Novaya 100, Skolkovo, Moscow Region 1430125 (Russian Federation); Kurchatov Institute National Research Center, Moscow (Russian Federation); Sidorov-Biryukov, D. A.; Fedotov, A. B. [International Laser Center, Physics Department, M.V. Lomonosov Moscow State University, Moscow 119992 (Russian Federation); Russian Quantum Center, ul. Novaya 100, Skolkovo, Moscow Region 1430125 (Russian Federation); Anokhin, K. V. [Kurchatov Institute National Research Center, Moscow (Russian Federation); P.K. Anokhin Institute of Normal Physiology, Russian Academy of Medical Sciences, Moscow (Russian Federation); Kilin, S. Ya. [B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk (Belarus); Sakoda, K. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); Zheltikov, A. M. [International Laser Center, Physics Department, M.V. Lomonosov Moscow State University, Moscow 119992 (Russian Federation); Russian Quantum Center, ul. Novaya 100, Skolkovo, Moscow Region 1430125 (Russian Federation); Department of Physics and Astronomy, Texas A and M University, College Station, Texas 77843 (United States); Center of Photochemistry, Russian Academy of Sciences, ul. Novatorov 7a, Moscow 117421 (Russian Federation)

    2014-02-24T23:59:59.000Z

    Two-photon excitation is shown to substantially enhance the locality of fiber-based optical interrogation of strongly scattering biotissues. In our experiments, a high-numerical-aperture, large-core-are fiber probe is used to deliver the 200-fs output of a 100-MHz mode-locked ytterbium fiber laser to samples of live mouse brain, induce two-photon fluorescence of nitrogen–vacancy centers in diamond markers in brain sample. Fiber probes with a high numerical aperture and a large core area are shown to enable locality enhancement in fiber-laser–fiber-probe two-photon brain excitation and interrogation without sacrificing the efficiency of fluorescence response collection.

  10. Autoradiographic localization of endothelin-1 binding sites in the cardiovascular and respiratory systems

    SciTech Connect (OSTI)

    Power, R.F.; Wharton, J.; Zhao, Y.; Bloom, S.R.; Polak, J.M.

    1989-01-01T23:59:59.000Z

    Specific high-affinity binding sites for endothelin-1 (ET-1) have been demonstrated in peripheral tissues using the technique of in vitro receptor autoradiography. Binding was time dependent and saturable and inhibited by coincubation with an excess of unlabeled ET-1 but resistant to dissociation. Binding sites were localized to blood vessels of all sizes including coronary arteries, intrapulmonary vessels, and intrarenal and intrasplenic arteries. In addition, high-affinity binding sites were identified on airway smooth muscle, over alveolar septa, and on nerve trunks. Scatchard analysis of the data revealed a Bmax of 250 amol/mm2 and a Kd of 0.1 nM for the binding of rat tracheal smooth muscle, with similar values for porcine coronary artery. The localization of binding sites is consistent with the known effects of ET-1 and suggests a direct action on specific receptors.

  11. Scanning localized magnetic fields in a microfluidic device using single spin in a nano-diamond

    E-Print Network [OSTI]

    Lim, Kangmook; Shapiro, Benjamin; Taylor, Jacob M; Waks, Edo

    2014-01-01T23:59:59.000Z

    Nitrogen vacancy (NV) color centers in diamond have emerged as highly versatile optical emitters that exhibit room temperature spin properties. These characteristics make NV centers ideal for magnetometry which plays an important role in a broad range of chemical and biological sensing applications. The integration of NV magnetometers with microfluidic systems could enable the study of isolated chemical and biological samples in a fluid environment with high spatial resolution. Here we demonstrate a method to perform localized magnetometry with nanometer spatial precision using a single NV center in a microfluidic device. We manipulate a magnetic particle within a liquid environment using a combination of planar flow control and vertical magnetic actuation to achieve 3-dimensional manipulation. A diamond nanocrystal containing a single NV center is deposited in the microfluidic channels and acts as a local magnetic field probe. We map out the magnetic field distribution of the magnetic particle by varying its...

  12. Electrochemical study of resistance to localized corrosion of stainless steels for biomaterial applications

    SciTech Connect (OSTI)

    Pan, J.; Karlen, C.; Ulfvin, C.

    2000-03-01T23:59:59.000Z

    Sandvik Bioline High-N and 316 LVM are two austenitic stainless steels especially developed for biomaterial applications. Their resistance to localized corrosion was investigated by electrochemical methods including cyclic potentiodynamic polarization and potentiostatic polarization measurements in a phosphate-buffered saline solution and in a simulated crevice solution, i.e., designed for crevice corrosion testing. Sandvik SAF 2507 (a high-performance super duplex stainless steel) was included in the tests as a reference material High-N, higher alloyed than 316 LVM, demonstrated excellent resistance to pitting initiation and a strong tendency to repassivation. High-N proved to have an equivalent or even higher resistance to localized corrosion than SAF 2507. The latter is known for its impressive corrosion properties, particularly in chloride containing environments. While 316 LVM may run the risk of crevice corrosion in implant applications, the risk seems negligible for High-N. In view of the fact that also the mechanical properties are superior to those of 316 LVM, High-N is a very attractive implant material.

  13. Optically generated ultrasound for enhanced drug delivery

    DOE Patents [OSTI]

    Visuri, Steven R. (Livermore, CA); Campbell, Heather L. (Baltimore, MD); Da Silva, Luiz (Danville, CA)

    2002-01-01T23:59:59.000Z

    High frequency acoustic waves, analogous to ultrasound, can enhance the delivery of therapeutic compounds into cells. The compounds delivered may be chemotherapeutic drugs, antibiotics, photodynamic drugs or gene therapies. The therapeutic compounds are administered systemically, or preferably locally to the targeted site. Local delivery can be accomplished through a needle, cannula, or through a variety of vascular catheters, depending on the location of routes of access. To enhance the systemic or local delivery of the therapeutic compounds, high frequency acoustic waves are generated locally near the target site, and preferably near the site of compound administration. The acoustic waves are produced via laser radiation interaction with an absorbing media and can be produced via thermoelastic expansion, thermodynamic vaporization, material ablation, or plasma formation. Acoustic waves have the effect of temporarily permeabilizing the membranes of local cells, increasing the diffusion of the therapeutic compound into the cells, allowing for decreased total body dosages, decreased side effects, and enabling new therapies.

  14. Compact High-Velocity Clouds at High Resolution

    E-Print Network [OSTI]

    W. B. Burton; Robert Braun

    1999-12-22T23:59:59.000Z

    Six examples of the compact, isolated high-velocity clouds catalogued by Braun & Burton (1999) and identified with a dynamically cold ensemble of primitive objects falling towards the barycenter of the Local Group have been imaged with the Westerbork Synthesis Radio Telescope; an additional ten have been imaged with the Arecibo telescope. The imaging reveals a characteristic core/halo morphology: one or several cores of cool, relatively high-column-density material, are embedded in an extended halo of warmer, lower-density material. Several of the cores show kinematic gradients consistent with rotation; these CHVCs are evidently rotationally supported and dark-matter dominated. The imaging data allows several independent estimates of the distances to these objects, which lie in the range 0.3 to 1.0 Mpc. The CHVC properties resemble what might be expected from very dark dwarf irregular galaxies.

  15. Optical observations of afterglows of gamma ray bursts localized by the high energy transient explorer

    E-Print Network [OSTI]

    Dullighan, Allyn, 1978-

    2004-01-01T23:59:59.000Z

    In this thesis, I discuss observations of the optical afterglows of seven HETE GRBs, carried out mainly with the Magellan Telescopes at Las Campanas Observatory in Chile. Five of the bursts, GRBs 020331, 030115, 030418, ...

  16. Local deformations and incommensurability of high quality epitaxial graphene on a weakly interacting transition metal

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the sample from the graphene preparation temperature to the mea- surement temperature. Although graphene-standing graphene. The structure of graphene and its variations are very sensitive to the preparation conditions. INTRODUCTION Graphene preparation at the surface of low-carbon solubility metals like Ir,1 Cu,2 or Pt3

  17. A New Error Control Scheme for Packetized Voice over HighSpeed Local Area Networks

    E-Print Network [OSTI]

    Liebeherr, Jörg

    propose a new error control mechanism for packet voice, referred to as Slack ARQ (S­ARQ). S­ARQ is based or priority channels. It does not require hardware support, imposes little overhead on network resources use of network resources than circuit switching. Statistical multiplexing, however, causes delay

  18. Iterative Clustering of High Dimensional Text Data Augmented by Local Search Inderjit S. Dhillon

    E-Print Network [OSTI]

    Ghosh, Joydeep

    County Baltimore, MD 21228, USA kogan@math.umbc.edu Abstract The k-means algorithm with cosine similarity, also known as the spherical k-means algorithm, is a popu- lar method for clustering document collections. However, spherical k-means can often yield qualitatively poor results, especially when cluster

  19. Anomalously high photocurrents in nanostructured electrodes : a new local microchip power source.

    SciTech Connect (OSTI)

    Hughes, Robert Clark; Dunphy, Darren Robert; Brinker, C. Jeffrey; Brozik, Susan Marie

    2004-02-01T23:59:59.000Z

    An increase in photocurrent has been observed at silicon electrodes coated with nanostructured porous silica films as compared to bare, unmodified silicon. Ultimately, to utilize this effect in devices such as sensors or microchip power supplies, the physical phenomena behind this observation need to be well characterized. To this end, Electrochemical Impedance Spectroscopy (EIS) was used to characterize the effect of surfactant-templated mesoporous silica films deposited onto silicon electrodes on the electrical properties of the electrode space-charge region in an aqueous electrolyte solution, as the electrical properties of this space-charge region are responsible for the photobehavior of semiconductor devices. A significant shift in apparent flat-band potential was observed for electrodes modified with the silica film when compared to bare electrodes; the reliability of this data is suspect, however, due to contributions from surface states to the overall capacitance of the system. To assist in the interpretation of this EIS data, a series of measurements at Pt electrodes was performed with the hope of decoupling electrode and film contributions from the EIS spectra. Surprisingly, the frequency-dependent impedance data for Pt electrodes coated with a surfactant-templated film was nearly identical to that observed for bare Pt electrodes, indicating that the mesoporous film had little effect on the transport of small electrolyte ions to the electrode surface. Pore-blocking agents (tetraalkylammonium salts) were not observed to inhibit this transport process. However, untemplated (non-porous) silica films dramatically increased film resistance, indicating that our EIS data for the Pt electrodes is reliable. Overall, our preliminary conclusion is that a shift in electrical properties in the space-charge region induced by the presence of a porous silica film is responsible for the increase in observed photocurrent.

  20. Scanning localized magnetic fields in a microfluidic device with a single nitrogen vacancy center

    E-Print Network [OSTI]

    Kangmook Lim; Chad Ropp; Benjamin Shapiro; Jacob M. Taylor; Edo Waks

    2014-08-01T23:59:59.000Z

    Nitrogen vacancy (NV) color centers in diamond have emerged as highly versatile optical emitters that exhibit room temperature spin properties. These characteristics make NV centers ideal for magnetometry, which plays an important role in chemical and biological sensing applications. The integration of NV magnetometers with microfluidic systems could enable the study of isolated chemical and biological samples in a fluid environment with high spatial resolution. Here we demonstrate a method to perform localized magnetometry with nanometer spatial precision using a single NV center in a microfluidic device. We manipulate a magnetic particle within a liquid environment using a combination of planar microfluidic flow control and vertical magnetic actuation to achieve 3-dimensional manipulation. A diamond nanocrystal containing a single NV center is deposited in the microfluidic channels and acts as a local magnetic field probe. We map out the magnetic field distribution of the magnetic particle by varying its position relative to the diamond nanocrystal and performing optically resolved electron spin resonance (ESR) measurements. We control the magnetic particle position with a 48 nm precision and attain a magnetic field sensitivity of 17.5 microTesla/Hz^1/2. These results open up the possibility for studying local magnetic properties of biological and chemical systems with high sensitivity in an integrated microfluidic platform.

  1. High Performance Network Monitoring

    SciTech Connect (OSTI)

    Martinez, Jesse E [Los Alamos National Laboratory

    2012-08-10T23:59:59.000Z

    Network Monitoring requires a substantial use of data and error analysis to overcome issues with clusters. Zenoss and Splunk help to monitor system log messages that are reporting issues about the clusters to monitoring services. Infiniband infrastructure on a number of clusters upgraded to ibmon2. ibmon2 requires different filters to report errors to system administrators. Focus for this summer is to: (1) Implement ibmon2 filters on monitoring boxes to report system errors to system administrators using Zenoss and Splunk; (2) Modify and improve scripts for monitoring and administrative usage; (3) Learn more about networks including services and maintenance for high performance computing systems; and (4) Gain a life experience working with professionals under real world situations. Filters were created to account for clusters running ibmon2 v1.0.0-1 10 Filters currently implemented for ibmon2 using Python. Filters look for threshold of port counters. Over certain counts, filters report errors to on-call system administrators and modifies grid to show local host with issue.

  2. VISCOUS AIRFOIL COMPUTATIONS USING LOCAL PRECONDITIONING

    E-Print Network [OSTI]

    Zingg, David W.

    or artificial dissi­ pation is based on the preconditioned system, improved steady­state solutions can compressibil­ ity effects. The flow over an airfoil at high lift is an ex­ ample of such a situation. Although or artificial dissipation, generally scales badly as the Mach number is reduced. If the flux splitting

  3. Edge-localized-modes in tokamaks

    SciTech Connect (OSTI)

    Leonard, A. W. [General Atomics, PO Box 85608, San Diego, California 92186-5608 (United States)

    2014-09-15T23:59:59.000Z

    Edge-localized-modes (ELMs) are a ubiquitous feature of H-mode in tokamaks. When gradients in the H-mode transport barrier grow to exceed the MHD stability limit the ELM instability grows explosively, rapidly transporting energy and particles onto open field lines and material surfaces. Though ELMs provide additional particle and impurity transport through the H-mode transport barrier, enabling steady operation, the resulting heat flux transients to plasma facing surfaces project to large amplitude in future low collisionality burning plasma tokamaks. Measurements of the ELM heat flux deposition onto material surfaces in the divertor and main chamber indicate significant broadening compared to inter-ELM heat flux, with a timescale for energy deposition that is consistent with sonic ion flow and numerical simulation. Comprehensive ELM simulation is highlighting the important physics processes of ELM transport including parallel transport due to magnetic reconnection and turbulence resulting from collapse of the H-mode transport barrier. Encouraging prospects for ELM control and/or suppression in future tokamaks include intrinsic modes of ELM free operation, ELM triggering with frequent small pellet injection and the application of 3D magnetic fields.

  4. Aspects of locally covariant quantum field theory

    E-Print Network [OSTI]

    Ko Sanders

    2008-09-28T23:59:59.000Z

    This thesis considers various aspects of locally covariant quantum field theory (LCQFT; see Brunetti et al., Commun.Math.Phys. 237 (2003), 31-68), a mathematical framework to describe axiomatic quantum field theories in curved spacetimes. New results include: a philosophical interpretation of certain aspects of this framework in terms of modal logic; a proof that the truncated n-point functions of any Hadamard state of the free real scalar field are smooth, except for n=2; a description of he free Dirac field in a representation independent way, showing that the theory is determined entirely by the relations between the adjoint map, the charge conjugation map and the Dirac operator; a proof that the relative Cauchy evolution of the free Dirac field is related to its stress-energy-momentum tensor in the same way as for the free real scalar field (cf. loc.cit.); several results on the Reeh-Schlieder property in LCQFT, including but not limited to those of our earlier paper; a new and elegant approach to wave front sets of Banach space-valued distributions, which allows easy proofs and extensions of results in the literature.

  5. Dual mode stereotactic localization method and application

    DOE Patents [OSTI]

    Keppel, Cynthia E. (Norfolk, VA); Barbosa, Fernando Jorge (Newport News, VA); Majewski, Stanislaw (Grafton, VA)

    2002-01-01T23:59:59.000Z

    The invention described herein combines the structural digital X-ray image provided by conventional stereotactic core biopsy instruments with the additional functional metabolic gamma imaging obtained with a dedicated compact gamma imaging mini-camera. Before the procedure, the patient is injected with an appropriate radiopharmaceutical. The radiopharmaceutical uptake distribution within the breast under compression in a conventional examination table expressed by the intensity of gamma emissions is obtained for comparison (co-registration) with the digital mammography (X-ray) image. This dual modality mode of operation greatly increases the functionality of existing stereotactic biopsy devices by yielding a much smaller number of false positives than would be produced using X-ray images alone. The ability to obtain both the X-ray mammographic image and the nuclear-based medicine gamma image using a single device is made possible largely through the use of a novel, small and movable gamma imaging camera that permits its incorporation into the same table or system as that currently utilized to obtain X-ray based mammographic images for localization of lesions.

  6. Analyzing many-body localization with a quantum computer

    E-Print Network [OSTI]

    Bela Bauer; Chetan Nayak

    2014-11-05T23:59:59.000Z

    Many-body localization, the persistence against electron-electron interactions of the localization of states with non-zero excitation energy density, poses a challenge to current methods of theoretical and numerical analysis. Numerical simulations have so far been limited to a small number of sites, making it difficult to obtain reliable statements about the thermodynamic limit. In this paper, we explore the ways in which a relatively small quantum computer could be leveraged to study many-body localization. We show that, in addition to studying time-evolution, a quantum computer can, in polynomial time, obtain eigenstates at arbitrary energies to sufficient accuracy that localization can be observed. The limitations of quantum measurement, which preclude the possibility of directly obtaining the entanglement entropy, make it difficult to apply some of the definitions of many-body localization used in the recent literature. We discuss alternative tests of localization that can be implemented on a quantum computer.

  7. Local Thermal Equilibrium States and Quantum Energy Inequalities

    E-Print Network [OSTI]

    Jan Schlemmer; Rainer Verch

    2008-02-15T23:59:59.000Z

    In this paper we investigate the energy distribution of states of a linear scalar quantum field with arbitrary curvature coupling on a curved spacetime which fulfill some local thermality condition. We find that this condition implies a quantum energy inequality for these states, where the (lower) energy bounds depend only on the local temperature distribution and are local and covariant (the dependence of the bounds other than on temperature is on parameters defining the quantum field model, and on local quantities constructed from the spacetime metric). Moreover, we also establish the averaged null energy condition (ANEC) for such locally thermal states, under growth conditions on their local temperature and under conditions on the free parameters entering the definition of the renormalized stress-energy tensor. These results hold for a range of curvature couplings including the cases of conformally coupled and minimally coupled scalar field.

  8. Flow localization in sheet specimens with pairs of holes

    SciTech Connect (OSTI)

    Geltmacher, A.B. [FM Technologies, Fairfax, VA (United States); Koss, D.A. [Pennsylvania State Univ., University Park, PA (United States). Dept. of Metals Science and Engineering; Stout, M.G. [Los Alamos National Lab., NM (United States); Matic, P. [Naval Research Lab., Washington, DC (United States). Mechanics of Materials Dept.

    1998-03-01T23:59:59.000Z

    The deformation localization behavior of sheet specimens containing geometric perturbations in the form of pairs of through-thickness holes is examined. Both experiments and computational modeling are performed in either uniaxial or equal-biaxial tension in order to examine the effect of applied loading path on the far-field strain needed to initiate localized necking in the ligament between the hole pairs. The models also examine the influence of hole spacing and matrix strain hardening on ligament localization. The far-field strain needed to cause the localization of the ligament is shown to increase as the biaxiality of the loading path increases, the hole spacing increases, and the strain-hardening exponent increases. The present study also indicates that the onset of localized necking can be predicted by employing the Hill criterion, if the local strain states within the ligament are taken into account.

  9. "Exploring damage management of high performance metallic alloys in critical

    E-Print Network [OSTI]

    Acton, Scott

    Fatigue Localized corrosion degrades fatigue performance of high strength aluminum alloys. The expense and Aluminum Alloys Exposure to a moist environment degrades the fatigue resistance of all aluminum alloys"Exploring damage management of high performance metallic alloys in critical systems to develop new

  10. High-temperature piezoresponse force microscopy B. Bhatia,1

    E-Print Network [OSTI]

    King, William P.

    High-temperature piezoresponse force microscopy B. Bhatia,1 J. Karthik,2 D. G. Cahill,1,2 L. W September 2011; published online 24 October 2011) We report high temperature piezoresponse force microscopy resistive heater allows local temperature control up to 1000 C with minimal electrostatic interactions

  11. Fermion localization and flavour hierarchy in higher curvature spacetime

    E-Print Network [OSTI]

    Choudhury, Sayantan; SenGupta, Soumitra

    2015-01-01T23:59:59.000Z

    Fermion localization in a braneworld model in presence of dilaton coupled higher curvature Gauss-Bonnet bulk gravity is discussed. It is shown that the left handed fermionic modes can be localized on the visible brane due to the dilaton coupled higher curvature term without the necessity of any external localizing bulk field. This offers a natural resolution of the flavour hierarchy problem in Standard Model.

  12. Local readout enhancement for detuned signal-recycling interferometers

    E-Print Network [OSTI]

    Henning Rehbein; Helge Mueller-Ebhardt; Kentaro Somiya; Chao Li; Roman Schnabel; Karsten Danzmann; Yanbei Chen

    2007-08-22T23:59:59.000Z

    Motivated by the optical-bar scheme of Braginsky, Gorodetsky and Khalili, we propose to add to a high power detuned signal-recycling interferometer a local readout scheme which measures the motion of the arm-cavity front mirror. At low frequencies this mirror moves together with the arm-cavity end mirror, under the influence of gravitational waves. This scheme improves the low-frequency quantum-noise-limited sensitivity of optical-spring interferometers significantly and can be considered as a incorporation of the optical-bar scheme into currently planned second-generation interferometers. On the other hand it can be regarded as an extension of the optical bar scheme. Taking compact-binary inspiral signals as an example, we illustrate how this scheme can be used to improve the sensitivity of the planned Advanced LIGO interferometer, in various scenarios, using a realistic classical-noise budget. We also discuss how this scheme can be implemented in Advanced LIGO with relative ease.

  13. THE ENVIRONMENTAL INFLUENCE ON THE EVOLUTION OF LOCAL GALAXIES

    SciTech Connect (OSTI)

    Bouchard, Antoine; Da Costa, Gary S.; Jerjen, Helmut [Research School of Astronomy and Astrophysics, Australian National University, Weston, ACT 2611 (Australia)], E-mail: gdc@mso.anu.edu.au, E-mail: jerjen@mso.anu.edu.au, E-mail: bouchard@ast.uct.ac.za

    2009-02-15T23:59:59.000Z

    The results of an H{alpha} photometric survey of 30 dwarf galaxies of various morphologies in the Centaurus A and Sculptor groups are presented. Of these 30, emission was detected in 13: eight are of late-type, two are early-type, and three are of mixed morphologies. The typical flux detection limit of {approx}2 x 10{sup -16} erg s{sup -1} cm{sup -2} translates into a star-formation rate (SFR) detection limit of 4 x 10{sup -6} M {sub sun} yr{sup -1}. In light of these results, the morphology-density relation is re-examined, and it is shown that, despite a number of unaccounted parameters, there are significant correlations between the factors determining the morphological type of a galaxy and its environment. Dwarf galaxies in high-density regions have a lower current SFR and lower neutral gas content than their low-density counterparts, confirming earlier results from the Local Group and other denser environments. The effect of environment is also seen in the timescale formed from the ratio of blue luminosity to current SFR-dwarfs in higher-density environments have larger values, indicating relatively higher past average SFR. The influence of environment extends very far, and no dwarfs from our sample can be identified as 'field' objects.

  14. adaptive localization regions: Topics by E-print Network

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

    22 23 24 25 Next Page Last Page Topic Index 1 Developing regional and local scenarios for climate change mitigation and adaptation Geosciences Websites Summary: Developing regional...

  15. Electric Field Control of Local Ferromagnetism with a Magnetoelectric...

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

    Electric Field Control of Local Ferromagnetism with a Magnetoelectric Multiferroic Print Magnetoelectric multiferroics-materials that simultaneously show some form of magnetic and...

  16. New Atomic Force Microscope Spectroscopy Probes Local Elasticity...

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

    Materials Characterization New Atomic Force Microscope Spectroscopy Probes Local Elasticity March 04, 2015 Shown is a contact resonance frequency image after nano-oxidation of a...

  17. Local Incentive-Based Policy for Vegetable-Agroforestry: alocally...

    Open Energy Info (EERE)

    Incentive-Based Policy for Vegetable-Agroforestry: a locally-appropriate adaptation and mitigation action (LAAMA) to climate change Jump to: navigation, search Tool Summary LAUNCH...

  18. Organizing and Strategizing a Local/Regional Solar Effort

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

    18,000+ local jurisdictions with authority over PV permitting requirements, land use codes and zoning ordinances 5,000+ utilities implementing interconnection standards and...

  19. State and Local Solution Center | Department of Energy

    Energy Savers [EERE]

    (TAP) provide resources, events, and assistance to state, local, tribal, and K-12 school district leaders working to unlock a clean energy economy. Resources in the State and...

  20. State and Local Peer Exchange | Department of Energy

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

    by sharing information and experiences with your peers, and facilitating that communication and learning is one of our core focuses. TAP offers state, local, tribal, and K-12...

  1. Scanning Tunneling Microscopy currents on locally disordered graphene

    E-Print Network [OSTI]

    Tsai, Shan-Wen; Peres, Nuno M. R.; Santos, J. E.; Ribeiro, R. M.

    2009-01-01T23:59:59.000Z

    Scanning Tunneling Microscopy currents on locally disorderedcharacteristic curves of Scanning Tunneling Microscopy (STM)for the calculation of Scanning Tunneling Microscopy (STM)

  2. alfreton local plan: Topics by E-print Network

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

    the robot should perform in order to improve mapping efficiency Chaimowicz, Luiz 7 Business Plans Classification with Locally Pruned Lazy Learning Models Engineering...

  3. Local Uniqueness for the Fixed Energy Fixed Angle Inverse Problem ...

    E-Print Network [OSTI]

    Abstract. We prove local uniqueness for the inverse problem in obstacle scattering at a fixed energy and fixed incident angle. We consider the inverse problem of ...

  4. State and Local Code Implementation: Midwest Region - 2014 BTO...

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

    Code Implementation: Midwest Region - 2014 BTO Peer Review Presenter: Isaac Elencave, Midwest Energy Efficiency Alliance View the Presentation State and Local Code...

  5. Cubic-based 3-D Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Shwe, Hnin Yu; Chong, Peter HJ

    2013-01-01T23:59:59.000Z

    Scheme in Stereo Wireless Sensor Networks,” in Advances infor mobile wireless sensor networks," Ad Hoc Networks, vol.and B. D. O. Anderson, "Wireless sensor network localization

  6. Local environment and composition of magnesium gallium layered...

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

    environment and composition of magnesium gallium layered double hydroxides determined from solid-state 1H and 71Ga NMR Local environment and composition of magnesium gallium...

  7. Local Content Requirements in British Columbia's Wind Power Industry

    E-Print Network [OSTI]

    Pedersen, Tom

    Local Content Requirements in British Columbia's Wind Power Industry May Hao, Matt Mackenzie, Alex..................................................................................8 4.1 Current Wind Power Projects

  8. THE LEX-PLUS-POWER INEQUALITY FOR LOCAL COHOMOLOGY ...

    E-Print Network [OSTI]

    2013-03-11T23:59:59.000Z

    We prove an inequality between Hilbert functions of local cohomology modules supported in the homogeneous maximal ideal of standard graded algebras over

  9. State and Local Code Implementation: Northeast Region - 2014...

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

    South-central Region - 2014 BTO Peer Review Building Energy Codes Program - 2014 BTO Peer Review State and Local Code Implementation: State Energy Officials - 2014 BTO Peer Review...

  10. State and Local Code Implementation: State Energy Officials ...

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

    State Energy Officials - 2014 BTO Peer Review State and Local Code Implementation: State Energy Officials - 2014 BTO Peer Review Presenter: Chris Wagner, National Association of...

  11. LANSCE | Lujan Center | Thrust Area | Local Structure, Magnetism...

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

    Thrust Area Local Structure, Magnetism, and Nanomaterials The Lujan Neutron Scattering Center encompasses a set of powder diffractometers, instrument scientist specialists, and...

  12. Skeletal muscle biomechanics drives intramuscular transport of locally delivered drugs

    E-Print Network [OSTI]

    Wu, Peter I-Kung

    2007-01-01T23:59:59.000Z

    Introduction: Effective local drug delivery to contractile tissues such as skeletal muscle requires a thorough understanding of the impact of mechanical loads on intramuscular pharmacokinetics. Current preparations for ...

  13. Theory of Semidefinite Programming for Sensor Network Localization

    E-Print Network [OSTI]

    Anthony So

    2006-07-28T23:59:59.000Z

    Jul 28, 2006 ... Theory of Semidefinite Programming for Sensor Network Localization. Anthony So (manchoso ***at*** cs.stanford.edu) Yinyu Ye (yinyu-ye ...

  14. Risk Analysis 101: fooled by local robustness ... again!

    E-Print Network [OSTI]

    Moshe Sniedovich

    2012-09-24T23:59:59.000Z

    Sep 24, 2012 ... Risk Analysis 101: fooled by local robustness ... again! Moshe Sniedovich(moshe ***at*** ms.unimelb.edu.au). Abstract: This article explains, ...

  15. Handling of Highly Radioactive Radiation Sources in a Hot Cell Using a Mechanically Driven Cell Crane - 13452

    SciTech Connect (OSTI)

    Klute, Stefan; Huber, Wolfgang-Bruno [Siempelkamp Nukleartechnik GmbH, Am Taubenfeld 25/1, 69123 Heidelberg (Germany)] [Siempelkamp Nukleartechnik GmbH, Am Taubenfeld 25/1, 69123 Heidelberg (Germany); Meyer, Franz [Nuclear Engineering Seibersdorf GmbH, 2444 Seibersdorf (Austria)] [Nuclear Engineering Seibersdorf GmbH, 2444 Seibersdorf (Austria)

    2013-07-01T23:59:59.000Z

    In 2010, Siempelkamp Nukleartechnik GmbH was awarded the contract for design and erection of a Hot Cell for handling and storage of highly radioactive radiation sources. This Hot Cell is part of a new hot cell laboratory, constructed for the NHZ (Neues Handhabungszentrum = New Handling Center) of the Nuclear Engineering Seibersdorf GmbH (NES). All incurring radioactive materials from Austria are collected in the NHZ, where they are safely conditioned and stored temporarily until their final storage. The main tasks of the NES include, apart from the collection, conditioning and storage of radioactive waste, also the reprocessing and the decontamination of facilities and laboratories originating from 45 years of research and development at the Seibersdorf site as well as the operation of the Hot Cell Laboratory [1]. The new Hot Cell Laboratory inside the NHZ consists of the following room areas: - One hot cell, placed in the center, for remote controlled, radiation protected handling of radioactive materials, including an integrated floor storage for the long-term temporary storage of highly radioactive radiation sources; - An anteroom for the loading and unloading of the hot cell; - One control room for the remote controlling of the hot cell equipment; - One floor storage, placed laterally to the hot cell, for burial, interim storage and removal of fissionable radioactive material in leak-proof packed units in 100 l drums. The specific design activity of the hot cell of 1.85 Pbq relating to 1-Me-Radiator including the integrated floor storage influences realization and design of the components used in the cell significantly. (authors)

  16. Tiny HI Clouds in the Local ISM

    E-Print Network [OSTI]

    Robert Braun; Nissim Kanekar

    2005-06-08T23:59:59.000Z

    We report deep, high spectral resolution WSRT HI 21cm observations of four high latitude compact radio sources, that have revealed a new population of tiny, discrete clouds in the diffuse ISM, with peak optical depths tau ~ 0.1-2%, HI column densities of 0.4-8 * 10^{18} cm^{-2} and core temperatures of 20-80 K. Imaging detections confirm these low column densities and imply linear core dimensions of a few thousand AU, assuming a distance of 100 pc. The physical origin of these tiny HI structures and their distribution in the ISM is at present unknown. Further observations will be required to determine whether they are a ubiquitous component of the ISM.

  17. Connecting Reionization to the Local Universe

    SciTech Connect (OSTI)

    Alvarez, Marcelo A.; Busha, Michael; Abel, Tom; Wechsler, Risa H.; /KIPAC, Menlo Park

    2009-08-03T23:59:59.000Z

    We present results of combined N-body and three-dimensional reionization calculations to determine the relationship between reionization history and local environment in a volume 1 Gpc h{sup -1} across and a resolution of about 1 Mpc. We resolve the formation of about 2 x 10{sup 6} halos of mass greater than {approx} 10{sup 12} M{sub {circle_dot}} at z = 0, allowing us to determine the relationship between halo mass and reionization epoch for galaxies and clusters. For our fiducial reionization model, in which reionization begins at z {approx} 15 and ends by z {approx} 6, we find a strong bias for cluster-size halos to be in the regions which reionized first, at redshifts 10 < z < 15. Consequently, material in clusters was reionized within relatively small regions, on the order of a few Mpc, implying that all clusters in our calculation were reionized by their own progenitors. Milky Way mass halos were on average reionized later and by larger regions, with a distribution most similar to the global one, indicating that low mass halos are nearly uncorrelated with reionization when only their mass is taken as a prior. On average, we find that most halos with mass less than 10{sup 13} M{sub {circle_dot}} were reionized internally, while almost all halos with masses greater than 10{sup 14} M{sub {circle_dot}} were reionized by their own progenitors. We briefly discuss the implications of this work in light of the 'missing satellites' problem and how this new approach may be extended further.

  18. Hydrogen local vibrational modes in semiconductors

    SciTech Connect (OSTI)

    McCluskey, M D [Univ. of California, Berkeley, CA (United States). Dept. of Physics

    1997-06-01T23:59:59.000Z

    Following, a review of experimental techniques, theory, and previous work, the results of local vibrational mode (LVM) spectroscopy on hydrogen-related complexes in several different semiconductors are discussed. Hydrogen is introduced either by annealing in a hydrogen ambient. exposure to a hydrogen plasma, or during growth. The hydrogen passivates donors and acceptors in semiconductors, forming neutral complexes. When deuterium is substituted for hydrogen. the frequency of the LVM decreases by approximately the square root of two. By varying the temperature and pressure of the samples, the microscopic structures of hydrogen-related complexes are determined. For group II acceptor-hydrogen complexes in GaAs, InP, and GaP, hydrogen binds to the host anion in a bond-centered orientation, along the [111] direction, adjacent to the acceptor. The temperature dependent shift of the LVMs are proportional to the lattice thermal energy U(T), a consequence of anharmonic coupling between the LVM and acoustical phonons. In the wide band gap semiconductor ZnSe, epilayers grown by metalorganic chemical vapor phase epitaxy (MOCVD) and doped with As form As-H complexes. The hydrogen assumes a bond-centered orientation, adjacent to a host Zn. In AlSb, the DX centers Se and Te are passivated by hydrogen. The second, third, and fourth harmonics of the wag modes are observed. Although the Se-D complex has only one stretch mode, the Se-H stretch mode splits into three peaks. The anomalous splitting is explained by a new interaction between the stretch LVM and multi-phonon modes of the lattice. As the temperature or pressure is varied, and anti-crossing is observed between LVM and phonon modes.

  19. A new prediction strategy for long local protein structures using an original description

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - 1 - A new prediction strategy for long local protein structures using an original description Prediction Keywords: library of fragments, structural networks, local structure prediction, support vector approximation. A local structure prediction method was also proposed. Here, overlapping properties of local

  20. Thermal behavior of localized surface plasmon resonance of Au/TiO2 core/shell nanoparticle arrays

    E-Print Network [OSTI]

    Thermal behavior of localized surface plasmon resonance of Au/TiO2 core/shell nanoparticle arrays/shell nanoparticle arrays. Thermal annealing is carried out in three different routes, i.e., pre-TiO2 annealing, post various metallic nanostructures, core/shell nanoparticles exhibit high LSPR tunability and ap- plicability

  1. Boiling heat transfer in a vertical microchannel: Local estimation during flow boiling with a non intrusive method

    E-Print Network [OSTI]

    Boiling heat transfer in a vertical microchannel: Local estimation during flow boiling with a non the results of experimental and numerical studies concerning boiling heat transfer inside vertical in minichannels for several gravity levels (µg, 1g, 2g). To fully understand the high heat transfer potential

  2. Toxic hydrogen sulphide and dark caves: pronounced male life-history divergence among locally adapted Poecilia mexicana

    E-Print Network [OSTI]

    Schlupp, Ingo

    Toxic hydrogen sulphide and dark caves: pronounced male life-history divergence among locally are characterized by exceptionally high concentrations of hydrogen sulphide (H2S): deep-sea hydrothermal vents, hydrocarbon seeps, as well as intertidal zones, salt marshes, mudflats and sewage outfalls, where hydrogen

  3. Stochastic reduced-order model for an automotive vehicle in presence of numerous local elastic modes in the low-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Stochastic reduced-order model for an automotive vehicle in presence of numerous local elastic a high modal density in the low-frequency range, such as an automotive vehicle. This type of structure is applied on a complex computational model of an automotive vehicle. 1 INTRODUCTION This work is performed

  4. Control of the microclimate around the head with opposing jet local ventilation

    E-Print Network [OSTI]

    Liu, Chonghui; Higuchi, Hiroshi; Arens, Edward; Zhang, Hui Ph.D

    2009-01-01T23:59:59.000Z

    of opposing jet local ventilation. AIAA 2009 Region I-NEHead with Opposing Jet Local Ventilation Chonghui Liu 1,* ,

  5. CAMAC SOFTWARE FOR TJ-I AND TJ-IU

    E-Print Network [OSTI]

    van Milligen, Boudewijn

    in a single CAMAC data file. These data files are stored temporarily on the local VAX 4000 ('FUEXP1') and transferred automatically each evening at 20:00 h to the central VAX ('CIEVX1'). The data are available

  6. High efficiency stoichiometric internal combustion engine system

    DOE Patents [OSTI]

    Winsor, Richard Edward (Waterloo, IA); Chase, Scott Allen (Cedar Falls, IA)

    2009-06-02T23:59:59.000Z

    A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

  7. Local implementations of non-local quantum gates in linear entangled channel

    E-Print Network [OSTI]

    Debashis Saha; Sanket Nandan; Prasanta K. Panigrahi

    2014-08-03T23:59:59.000Z

    In this paper, we demonstrate n-party controlled unitary gate implementations locally on arbitrary remote state through linear entangled channel where control parties share entanglement with the adjacent control parties and only one of them shares entanglement with the target party. In such a network, we describe the protocol of simultaneous implementation of controlled-Hermitian gate starting from three party scenario. We also explicate the implementation of three party controlled-Unitary gate, a generalized form of To?oli gate and subsequently generalize the protocol for n-party using minimal cost.

  8. V-199: Solaris Bugs Let Local Users Gain Root Privileges, Remote and Local

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

    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 onYouTube YouTube Note: SinceDevelopment | Department of EnergyEnergy 94: IBMand LocalDepartmentAccountFlaw

  9. THE IMPACT OF HURRICANE STRIKES ON LOCAL CROPLAND PRODUCTIVITY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    THE IMPACT OF HURRICANE STRIKES ON LOCAL CROPLAND PRODUCTIVITY: EVIDENCE FROM THE CARIBBEAN Eric://www.enseignement.polytechnique.fr/economie/ mailto:chantal.poujouly@polytechnique.edu hal-00393883,version1-10Jun2009 #12;THE IMPACT OF HURRICANE° 2009-14 Abstract: We empirically estimate the impact of hurricane strikes on local crop productivity

  10. Fertility Limits on Local Politicians in India Abhishek Chakravarty

    E-Print Network [OSTI]

    Bandyopadhyay, Antar

    .g., sterilization incentives in India). This paper examines a novel policy experiment that imposes fertility limitsFertility Limits on Local Politicians in India S Anukriti Abhishek Chakravarty September 19, 2014: political leaders. Keywords: India, Local Elections, Fertility Limits, Sex Ratios, Population Control We

  11. A Library for Locally Weighted Projection Regression --Supplementary Documentation --

    E-Print Network [OSTI]

    problems: · The function to be learnt is non-linear. Otherwise having multiple local models is a waste of resources, and you should rather use ordinary linear regression, or partial least squares (PLS) for the caseA Library for Locally Weighted Projection Regression -- Supplementary Documentation -- Stefan

  12. Phase transitions in dilute, locally connected neural networks

    E-Print Network [OSTI]

    MacIver, Malcolm A.

    a local neighborhood (dense, short-range connectivity). The number of connections per neuron, K, scales other neurons within a local neighborhood (dense, short-range connectivity). The number of connections connectivity variants are observed to obey an approximate Boltzmann-like energy distribution where a function

  13. Energy-Efficient Localized Routing in Random Multihop Wireless Networks

    E-Print Network [OSTI]

    Wang, Yu

    Localized Energy-Aware Restricted Neighborhood routing (LEARN), which can guarantee the energy efficiency is the energy consumption of the least energy cost path connecting s and t. In this paper, we study an energyEnergy-Efficient Localized Routing in Random Multihop Wireless Networks Yu Wang, Senior Member

  14. Damping filter method for obtaining spatially localized solutions

    E-Print Network [OSTI]

    Toshiki Teramura; Sadayoshi Toh

    2014-04-30T23:59:59.000Z

    Spatially localized structures are key components of turbulence and other spatio-temporally chaotic systems. From a dynamical systems viewpoint, it is desirable to obtain corresponding exact solutions, though their existence is not guaranteed. A damping filter method is introduced to obtain variously localized solutions, and adopted into two typical cases. This method introduces a spatially selective damping effect to make a good guess at the exact solution, and we can obtain an exact solution through a continuation with the damping amplitude. First target is a steady solution to Swift-Hohenberg equation, which is a representative of bi-stable systems in which localized solutions coexist, and a model for span-wisely localized cases. Not only solutions belonging to the well-known snaking branches but also those belonging to an isolated branch known as "isolas" are found with a continuation paths between them in phase space extended with the damping amplitude. This indicates that this spatially selective excitation mechanism has an advantage in searching spatially localized solutions. Second target is a spatially localized traveling-wave solution to Kuramoto-Sivashinsky equation, which is a model for stream-wisely localized cases. Since the spatially selective damping effect breaks Galilean and translational invariances, the propagation velocity cannot be determined uniquely while the damping is active, and a singularity arises when these invariances are recovered. We demonstrate that this singularity can be avoided by imposing a simple condition, and a localized traveling-wave solution is obtained with a specific propagation speed.

  15. Local and Global Casimir Energies for a Semitransparent Cylindrical Shell

    E-Print Network [OSTI]

    Milton, Kim

    Local and Global Casimir Energies for a Semitransparent Cylindrical Shell In´es Cavero the -function shell, the local energy density diverges as the surface of the shell is approached; the divergence by physical boundaries, such as the Casimir energy due to a perfectly conducting spherical shell [1], has been

  16. REVIEWS AND SYNTHESES Local adaptation in host use among marine

    E-Print Network [OSTI]

    Sotka, Erik

    , local adaptation, selection. Ecology Letters (2005) 8: 448­459 I N T R O DU C T I O N Population, abundance and ecological roles of organisms (Fox & Morrow 1981; Mopper & Strauss 1998), helps to maintain, there is a lingering perception that populations in the sea rarely locally adapt, and are more likely to evolve

  17. Organizing and Strategizing a Local/Regional Solar Effort

    Broader source: Energy.gov [DOE]

    This webinar, "Organizing and Strategizing A Local/Regional Solar Effort," was originally presented on June 14, 2013 as part of the DOE SunShot Initiative's Solar Action Webinar Series. This includes presentations by a number of the program's grant partners, including three cities and one corporate partner, to provide participants' perspectives and present their local solar strategies.

  18. ADVANCES IN GEOPHYSICS, VOL. 39 LOCAL TSUNAMIS AND EARTHQUAKE

    E-Print Network [OSTI]

    equations describe the evolution of tsunamis during run-up in such a way that the shoreline is fixed in (ADVANCES IN GEOPHYSICS, VOL. 39 LOCAL TSUNAMIS AND EARTHQUAKE SOURCE PARAMETERS ERIC L. GEIST u in estimating the severity of local tsunamis gener- ated by earthquakes is explaining the great event

  19. Image Forgery Detection Using Multi-Resolution Weber Local Descriptors

    E-Print Network [OSTI]

    Bebis, George

    Image Forgery Detection Using Multi-Resolution Weber Local Descriptors Muhammad Hussain1 , Ghulam * ghulam@ksu.edu.sa Abstract-- In this paper, a multi-resolution Weber law descriptors (WLD) based image of the images. Keywords: image forgery detection, Weber local descriptor, splicing forgery, copy-move forgery

  20. Business Plans Classification with Locally Pruned Lazy Learning Models

    E-Print Network [OSTI]

    Verleysen, Michel

    1 Business Plans Classification with Locally Pruned Lazy Learning Models Antti Sorjamaa1 , Amaury linéaire par morceaux connue sous le nom de Locally Pruned Lazy Learning Model. Mots clefs : Lazy Learning, Classification, Leave-one-Out, Elagage. Abstract : A business plan is a document presenting in a concise form

  1. Localized temperature stability of low temperature cofired ceramics

    DOE Patents [OSTI]

    Dai, Steven Xunhu

    2013-11-26T23:59:59.000Z

    The present invention is directed to low temperature cofired ceramic modules having localized temperature stability by incorporating temperature coefficient of resonant frequency compensating materials locally into a multilayer LTCC module. Chemical interactions can be minimized and physical compatibility between the compensating materials and the host LTCC dielectrics can be achieved. The invention enables embedded resonators with nearly temperature-independent resonance frequency.

  2. A technical approach to local government amalgamation Sasa Drezgic1

    E-Print Network [OSTI]

    Przulj, Natasa

    savings, there is a lack of methodology that would enable construction of a tool for better decision governments that would save cost. This does not only allow for determination of a cost saving amalgamation scenario, but also can serve as a benchmark of tolerable costs of local government provision of local goods

  3. Nuclear localization of pyrroleimidazole polyamidefluorescein conjugates in cell culture

    E-Print Network [OSTI]

    Dervan, Peter B.

    - jugates were synthesized and assayed for cellular localization. Thirteen cell lines, representing 11 human cancers, one human transformed kidney cell line, and one murine leukemia cell line, were treated with 5 M cell lines tested. The localization profiles of several other conjugates suggest that pyrrole

  4. Quantum non-locality and information security Muhammad Nadeem

    E-Print Network [OSTI]

    1 Quantum non-locality and information security Muhammad Nadeem Department of Basic Sciences-locality, as discussed here, is sufficient to achieve unconditional information security without requiring advanced, integrity, authenticity and availability of information to legitimate users. These information security

  5. DAMAGE LOCALIZATION IN PLATES USING DLVs Dionisio Bernal1

    E-Print Network [OSTI]

    Bernal, Dionisio

    DAMAGE LOCALIZATION IN PLATES USING DLVs Dionisio Bernal1 and Ariel Levy2 Department of Civil Associate Professor, 2 Graduate Student ABSTRACT The performance of a technique to localize damage based on the computation of load vectors that create stress fields that bypass the damaged region is investigated

  6. Robust Target Localization from Binary Decisions in Wireless Sensor Networks

    E-Print Network [OSTI]

    Michailidis, George

    Robust Target Localization from Binary Decisions in Wireless Sensor Networks Natallia Katenka Wireless sensor networks (WSN) are becoming an important tool in a variety of tasks, including mon- itoring targets and localizing multiple targets are also considered. Keywords: wireless sensor network, target

  7. Entangling power and local invariants of two-qubit gates

    E-Print Network [OSTI]

    S Balakrishnan; R Sankaranarayanan

    2010-09-07T23:59:59.000Z

    We show a simple relation connecting entangling power and local invariants of two-qubit gates. From the relation, a general condition under which gates have same entangling power is arrived. The relation also helps in finding the lower bound of entangling power for perfect entanglers, from which the classification of gates as perfect and nonperfect entanglers is obtained in terms of local invariants.

  8. Entangling power and local invariants of two-qubit gates

    E-Print Network [OSTI]

    Balakrishnan, S

    2010-01-01T23:59:59.000Z

    We show a simple relation connecting entangling power and local invariants of two-qubit gates. From the relation, a general condition under which gates have same entangling power is arrived. The relation also helps to find the lower bound of entangling power for perfect entangler, from which a new classification of gates in terms of local invariants is obtained.

  9. Energy-Optimal Collaborative GPS Localization with Short Range Communication

    E-Print Network [OSTI]

    Cai, Ying

    accuracy. In this paper, we show that the collaboration among proxy devices is helpful to energy-efficiently campuses. Next, we contemplate what is the best method for selfish mobile users to collaborate for energy-efficient localization, and suggest an energy-efficient and/or user fairness localization framework. Next, we develop

  10. WWW.UNIDATA.UCAR.EDU The Local Data Manager (LDM)

    E-Print Network [OSTI]

    of sources to researchers and educators at no cost. These data consists primarily of GOES satellite imageryData Fact Sheet WWW.UNIDATA.UCAR.EDU The Local Data Manager (LDM) The Unidata Local Data Manager data products. The system is designed for event-driven data distribution, and is currently used

  11. Local Harmonic Estimation in Musical Sound Rafael A. IRIZARRY

    E-Print Network [OSTI]

    Irizarry, Rafael A.

    Local Harmonic Estimation in Musical Sound Signals Rafael A. IRIZARRY Statistical modeling so a local harmonic model that tracks changes in pitch and in the amplitudes of the harmonics is fit estimates of the harmonic signal and of the noise signal. Different musical composition applications may

  12. Local Lyapunov Functions for periodic and finite-time ODEs

    E-Print Network [OSTI]

    Hafstein, Sigurður Freyr

    Local Lyapunov Functions for periodic and finite-time ODEs Peter Giesl and Sigurdur Hafstein Abstract Lyapunov functions for general systems are difficult to construct. How- ever, for autonomous Lyapunov function by solving a matrix equa- tion. Consequently, the same function is a local Lyapunov

  13. Integration of Local and Global Shape Analysis for Logo Classification

    E-Print Network [OSTI]

    Samet, Hanan

    Integration of Local and Global Shape Analysis for Logo Classification Jan Neumann, Hanan Samet@il.ibm.com Abstract. A comparison is made of global and local methods for the shape analysis of logos in an image metric on the logos. As representatives for the two classes of methods, we use the negative shape method

  14. A two-scale model for sheared fault gouge: Competition between macroscopic disorder and local viscoplasticity

    E-Print Network [OSTI]

    Ahmed E. Elbanna; Jean M. Carlson

    2014-02-05T23:59:59.000Z

    We develop a model for sheared gouge layers that accounts for the local increase in temperature at the grain contacts during sliding. We use the shear transformation zone (STZ) theory, a statistical thermodynamic theory, to describe irreversible macroscopic plastic deformations due to local rearrangements of the gouge particles. We track the temperature evolution at the grain contacts using a one dimensional heat diffusion equation. At low temperatures, the strength of the asperities is limited by the flow strength, as predicted by dislocation creep models. At high temperatures, some of the constituents of the grains may melt leading to the degradation of the asperity strength. Our model predicts a logarithmic rate dependence of the steady state shear stress in the quasi-static regime. In the dense flow regime the frictional strength decreases rapidly with increasing slip rate due to the effect of thermal softening at the granular interfaces. The transient response following a step in strain rate includes a direct effect and a following evolution effect, both of which depend on the magnitude and direction of the velocity step. In addition to frictional heat, the energy budget includes an additional energy sink representing the fraction of external work consumed in increasing local disorder. The model links low-speed and high-speed frictional response of gouge layers, and provides an essential ingredient for multiscale modeling of earthquake ruptures with enhanced coseismic weakening.

  15. Margin on Gross Tumor Volume and Risk of Local Recurrence in Head-and-Neck Cancer

    SciTech Connect (OSTI)

    Caudell, Jimmy J.; Meredith, Ruby F.; Spencer, Sharon A.; Keene, Kimberley S.; Dobelbower, M. Christian [Department of Radiation Oncology, University of Alabama-Birmingham, Birmingham, AL (United States); Bonner, James A., E-mail: jabonner@uabmc.ed [Department of Radiation Oncology, University of Alabama-Birmingham, Birmingham, AL (United States)

    2010-01-15T23:59:59.000Z

    Purpose: To determine whether the method or extent of construction of the high-dose clinical target volume (CTV) and high-dose planning target volume (PTV) in intensity-modulated radiation therapy (IMRT) for head-and-neck cancer are associated with an increased risk of locoregional failure. Materials and Methods: Patients with nasopharyngeal, oropharyngeal, oral cavity, hypopharyngeal, or laryngeal squamous cell carcinomas treated definitively with IMRT were included. All patients without local relapse had a minimum follow-up of 12 months. Median follow-up for all patients was 24 months. Treatment plans of 85 available patients were reviewed, and the gross tumor volume (GTV) to PTV expansion method was estimated. Results: The GTVs were expanded volumetrically in 71 of 85 patients, by a median of 15 mm (range, 4-25 mm). An anatomic component to the expansion of GTV was used in 14 of 85 patients. Eighteen patients failed locoregionally, for an actuarial locoregional control rate of 77.2% at 2 years. There was no significant difference in locoregional control between patients with GTVs expanded volumetrically vs. those with a component of anatomic expansion. In patients with GTVs expanded volumetrically, no increase in risk of local failure was seen in patients with a total GTV expansion of <=15 mm. Conclusion: In this retrospective study, there was not an increased risk of local failure using smaller margins or expanding GTVs volumetrically when treating head-and-neck cancer patients definitively with IMRT.

  16. Tiny HI Clouds in the Local ISM

    E-Print Network [OSTI]

    Robert Braun; Nissim Kanekar

    2004-09-17T23:59:59.000Z

    Very sensitive HI absorption spectra (tau RMS about 10^-4 over 1 km/s) toward high latitude QSOs have revealed a population of tiny discrete features in the diffuse ISM with peak tau of 0.1 - 2% and core line-widths corresponding to temperatures as low as 20 K. Imaging detections confirm linear dimensions of a few 1000 AU. We suggest these structures may be formed by the stellar winds of intermediate mass stars. A more speculative origin might involve molecular "dark matter".

  17. Hotels - Local Information - Radiation Effects Facility / Cyclotron

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstitute / Texas A&M

  18. Generating the local oscillator "locally" in continuous-variable quantum key distribution based on coherent detection

    E-Print Network [OSTI]

    Bing Qi; Pavel Lougovski; Raphael Pooser; Warren Grice; Miljko Bobrek

    2015-03-02T23:59:59.000Z

    Continuous-variable quantum key distribution (CV-QKD) protocols based on coherent detection have been studied extensively in both theory and experiment. In all the existing implementations of CV-QKD, both the quantum signal and the local oscillator (LO) are generated from the same laser and propagate through the insecure quantum channel. This arrangement may open security loopholes and also limit the potential applications of CV-QKD. In this paper, we propose and demonstrate a pilot-aided feedforward data recovery scheme which enables reliable coherent detection using a "locally" generated LO. Using two independent commercial laser sources and a spool of 25 km optical fiber, we construct a coherent communication system. The variance of the phase noise introduced by the proposed scheme is measured to be 0.04 (rad^2), which is small enough to enable secure key distribution. This technology also opens the door for other quantum communication protocols, such as the recently proposed measurement-device-independent (MDI) CV-QKD where independent light sources are employed by different users.

  19. Introduction Relationship between ISS and Robust Lyapunov Functions Computing Local Robust Lyapunov Functions by Linear Programming Computing Lo Computation of Local ISS Lyapunov Function Via

    E-Print Network [OSTI]

    Hafstein, Sigurður Freyr

    Introduction Relationship between ISS and Robust Lyapunov Functions Computing Local Robust Lyapunov Functions by Linear Programming Computing Lo Computation of Local ISS Lyapunov Function Via Linear;Introduction Relationship between ISS and Robust Lyapunov Functions Computing Local Robust Lyapunov Functions

  20. High Temperatures & Electricity Demand

    E-Print Network [OSTI]

    High Temperatures & Electricity Demand An Assessment of Supply Adequacy in California Trends.......................................................................................................1 HIGH TEMPERATURES AND ELECTRICITY DEMAND.....................................................................................................................7 SECTION I: HIGH TEMPERATURES AND ELECTRICITY DEMAND ..........................9 BACKGROUND

  1. Interaction of Kelvin waves and non-locality of the energy transfer in superfluids

    E-Print Network [OSTI]

    Laurie, Jason; Nazarenko, Sergey; Rudenko, Oleksii

    2009-01-01T23:59:59.000Z

    We argue that the physics of interacting Kelvin Waves (KWs) is highly non-trivial and cannot be understood on the basis of pure dimensional reasoning only. A consistent theory of KWs turbulence in superfluids should be based on explicit knowledge of the details of their interactions. To achieve this, we present a detailed calculation and comprehensive analysis of the interaction coefficients for KWs, thereby fixing previous mistakes stemming from unaccounted contributions. As a first application of this analysis, we show that the previously suggested Kozik-Svistunov energy spectrum of KWs, which has been often used for analysis of experimental and numerical data in superfluid turbulence, is irrelevant, because it is based on an erroneous assumption of the locality of the energy transfer through scales. We also demonstrate weak non-locality of the inverse cascade spectrum with a constant particle-number flux and find resulting logarithmic corrections to this spectrum.

  2. Identifying overlapping communities in social networks using multi-scale local information expansion

    E-Print Network [OSTI]

    Li, Hui-Jia; Liu, Zhi-Ping; Chen, Luonan; Zhang, Xiang-Sun

    2015-01-01T23:59:59.000Z

    Most existing approaches for community detection require complete information of the graph in a specific scale, which is impractical for many social networks. We propose a novel algorithm that does not embrace the universal approach but instead of trying to focus on local social ties and modeling multi-scales of social interactions occurring in those networks. Our method for the first time optimizes the topological entropy of a network and uncovers communities through a novel dynamic system converging to a local minimum by simply updating the membership vector with very low computational complexity. It naturally supports overlapping communities through associating each node with a membership vector which describes node's involvement in each community. This way, in addition to uncover overlapping communities, we can also describe different multi-scale partitions by tuning the characteristic size of modules from the optimal partition. Because of the high efficiency and accuracy of the algorithm, it is feasible ...

  3. Summary of gamma spectrometry on local air samples from 1985--1995

    SciTech Connect (OSTI)

    Winn, W.G.

    1997-04-02T23:59:59.000Z

    This report summarizes the 1985--1995 results of low-level HPGe gamma spectrometry analysis of high-volume air samples collected at the Aiken Airport, which is about 25 miles north of SRS. The author began analyzing these samples with new calibrations using the newly developed GRABGAM code in 1985. The air sample collections were terminated in 1995, as the facilities at the Aiken Airport were no longer available. Air sample measurements prior to 1985 were conducted with a different analysis system (and by others prior to 1984), and the data were not readily available. The report serves to closeout this phase of local NTS air sample studies, while documenting the capabilities and accomplishments. Hopefully, the information will guide other applications for this technology, both locally and elsewhere.

  4. A two-scale model for sheared fault gouge: Competition between macroscopic disorder and local viscoplasticity

    E-Print Network [OSTI]

    Elbanna, Ahmed E

    2014-01-01T23:59:59.000Z

    We develop a model for sheared gouge layers that accounts for the local increase in temperature at the grain contacts during sliding. We use the shear transformation zone (STZ) theory, a statistical thermodynamic theory, to describe irreversible macroscopic plastic deformations due to local rearrangements of the gouge particles. We track the temperature evolution at the grain contacts using a one dimensional heat diffusion equation. At low temperatures, the strength of the asperities is limited by the flow strength, as predicted by dislocation creep models. At high temperatures, some of the constituents of the grains may melt leading to the degradation of the asperity strength. Our model predicts a logarithmic rate dependence of the steady state shear stress in the quasi-static regime. In the dense flow regime the frictional strength decreases rapidly with increasing slip rate due to the effect of thermal softening at the granular interfaces. The transient response following a step in strain rate includes a d...

  5. Improved Beta-Protein Structure Prediction by Multilevel Optimization of NonLocal Strand Pairings and Local

    E-Print Network [OSTI]

    Baker, David

    using backbone torsion-space moves. An iterative, energy-biased resampling strategy is used to exploreImproved Beta-Protein Structure Prediction by Multilevel Optimization of NonLocal Strand Pairings and Local Backbone Conformation Philip Bradley and David Baker* University of Washington, Seattle

  6. 2014 Local Clinical Promotion Committee College Composition of LCPC SecretaryLocal Clinical Promotion Chair of LCPC

    E-Print Network [OSTI]

    Chen, Ying

    2014 Local Clinical Promotion Committee College Composition of LCPC SecretaryLocal Clinical Butterworth A/Prof Gavin Huttley 2014 University Clinical Promotion Committee Composition of UCPC Professor Barnard, Associate Dean, Rural Clinical School, ANU Medical School Secretariat Kylie Clark and Nathalie

  7. Kinetics of local probe oxidation of ultrathin V, Nb, Ta, Ti, TiN, and W metal films

    SciTech Connect (OSTI)

    Sagunova, I. V., E-mail: pcfme@miee.ru; Shevyakov, V. I.; Gavrilov, S. A.; Belov, A. N. [Moscow Institute of Electronic Technology (Technical University) (Russian Federation)

    2010-12-15T23:59:59.000Z

    The specific features of the kinetics of local probe oxidation of ultrathin V, Nb, Ta, Ti, TiN, and W metal films are studied. It is established that the kinetics of the oxidation process depends on such properties of the material to be oxidized as the resistivity, the presence of a natural surface oxide film and its thickness, the relationship between the densities of the metal and oxide, and the electrochemical constant of the oxidation process. For the material that provides a high efficiency of formation of local insulator nanoregions, vanadium is chosen, since this metal exhibits the maximum rate of anodic probe oxidation.

  8. GLAST observation of high-redshift GRBs

    SciTech Connect (OSTI)

    Bissaldi, Elisabetta; Longo, Francesco; Barbiellini, Guido [Dipartimento di Fisica, Universita di Trieste, Via Valerio 2, 34100, Trieste (Italy); INFN, Sezione di Trieste, Via Valerio 2, 34100, Trieste (Italy); Calura, Francesco [INAF - Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 34131 Trieste (Italy); Matteucci, Francesca [Dipartimento di Astronomia, Universita di Trieste, Via G. B. Tiepolo 11, 34131 Trieste (Italy); INAF - Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 34131 Trieste (Italy); Omodei, Nicola [INFN, Sezione di Pisa, Edificio C - Polo Fibonacci, Largo B. Pontecorvo 3, 56127, Pisa (Italy)

    2007-07-12T23:59:59.000Z

    We compare predicted Type Ib/c supernova (SNIb/c) rates with the observed long-duration Gamma-Ray-Burst (GRB) rates both locally and as a function of redshift, by assuming different star formation histories in galaxies of different morphological types. Due to the high star formation in spheroids at high redshift, we predict a large number of GRBs beyond z > 7. Moreover, based on our studies and on the current LAT performance, an estimate of the detection possibility of this burst population is presented.

  9. Massive stars: Feedback effects in the local universe

    E-Print Network [OSTI]

    M. S. Oey; C. J. Clarke

    2007-03-02T23:59:59.000Z

    We examine self-consistent parameterizations of the high-mass stellar population and resulting feedback, including mechanical, radiative, and chemical feedback, as we understand them locally. To date, it appears that the massive star population follows simple power-law clustering that extends down to individual field OB stars, and the robust stellar IMF seems to have a constant upper-mass limit. These properties result in specific patterns in the HII region LF and ionization of the diffuse, warm ionized medium. The resulting SNe generate superbubbles whose size distribution is also described by a simple power law, and from which a galaxy's porosity parameter is easily derived. A critical star-formation threshold can then be estimated, above which the escape of Lyman continuum photons, hot gas, and nucleosynthetic products is predicted. A first comparison with a large H-alpha sample of galaxies is broadly consistent with this prediction, and suggests that ionizing photons likely escapes from starburst galaxies. The superbubble size distribution also offers a basis for a Simple Inhomogeneous Model for galactic chemical evolution, which is especially relevant to metal-poor systems and instantaneous metallicity distributions. This model offers an alternative interpretation of the Galactic halo metallicity distribution and emphasizes the relative importance of star-formation intensity, in addition to age, in a system's evolution. The fraction of zero-metallicity, Population III stars is easily predicted for any such model. We emphasize that all these phenomena can be modeled in a simple, analytic framework over an extreme range in scale, offering powerful tools for understanding the role of massive stars in the cosmos. (Abridged)

  10. Six Local Teens Win Jefferson Lab Summer Externships | Jefferson...

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

    Denbigh High School; Keyona Grant, Warwick High School; and Latasha Davis, Steven Thompson, Tommie Canty and Sean Diggs of Woodside High School. Their essays covered the lives,...

  11. High-Temperature-High-Volume Lifting for Enhanced Geothermal...

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

    High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems High-Temperature-High-Volume Lifting for...

  12. Local Gaussian operations can enhance continuous-variable entanglement distillation

    E-Print Network [OSTI]

    ShengLi Zhang; Peter van Loock

    2011-03-23T23:59:59.000Z

    Entanglement distillation is a fundamental building block in long-distance quantum communication. Though known to be useless on their own for distilling Gaussian entangled states, local Gaussian operations may still help to improve non-Gaussian entanglement distillation schemes. Here we show that by applying local squeezing operations, both the performance and the efficiency of existing distillation protocols can be enhanced. We derive the optimal enhancement through local Gaussian unitaries, which can be obtained even in the most natural scenario when Gaussian mixed entangled states are shared after their distribution through a lossy-fiber communication channel.

  13. Bell-type inequalities for non-local resources

    E-Print Network [OSTI]

    Nicolas Brunner; Valerio Scarani; Nicolas Gisin

    2006-03-10T23:59:59.000Z

    We present bipartite Bell-type inequalities which allow the two partners to use some non-local resource. Such inequality can only be violated if the parties use a resource which is more non-local than the one permitted by the inequality. We introduce a family of N-inputs non-local machines, which are generalizations of the well-known PR-box. Then we construct Bell-type inequalities that cannot be violated by strategies that use one these new machines. Finally we discuss implications for the simulation of quantum states.

  14. Relativistic tidal heating of Hamiltonian quasi-local boundary expressions

    E-Print Network [OSTI]

    So, Lau Loi

    2015-01-01T23:59:59.000Z

    Purdue and Favata calculate the tidal heating used certain classical pseudotensors. Booth and Creighton employed the quasi-local mass formalism of Brown and York to demonstrate the same subject. All of them give the result matched with the Newtonian theory. Here we present another Hamiltonian quasi-local boundary expressions and all give the same desired value. This indicates that the tidal heating is unique as Thorne predicted. Moreover, we discovered that the pseudo-tensor method and quasi-local method are fundamentally different.

  15. Relativistic tidal heating of Hamiltonian quasi-local boundary expressions

    E-Print Network [OSTI]

    Lau Loi So

    2015-05-19T23:59:59.000Z

    Purdue and Favata calculate the tidal heating used certain classical pseudotensors. Booth and Creighton employed the quasi-local mass formalism of Brown and York to demonstrate the same subject. All of them give the result matched with the Newtonian theory. Here we present another Hamiltonian quasi-local boundary expressions and all give the same desired value. This indicates that the tidal heating is unique as Thorne predicted. Moreover, we discovered that the pseudo-tensor method and quasi-local method are fundamentally different.

  16. Interaction effects on dynamical localization in driven helium

    E-Print Network [OSTI]

    Felix Jörder; Klaus Zimmermann; Alberto Rodriguez; Andreas Buchleitner

    2014-08-22T23:59:59.000Z

    Dynamical localization prevents driven atomic systems from fast fragmentation by hampering the excitation process. We present numerical simulations within a collinear model of microwave-driven helium Rydberg atoms and prove that dynamical localization survives the impact of electron-electron interaction, even for doubly excited states in the presence of fast autoionization. We conclude that the effect of electron-electron repulsion on localization can be described by an appropriate rescaling of the atomic level density and of the external field with the strength of the interaction.

  17. Anderson localization in optical lattices with speckle disorder

    SciTech Connect (OSTI)

    Sucu, Serpil; Aktas, Saban; Okan, S. Erol [Department of Physics, Trakya University, 22030 Edirne (Turkey); Akdeniz, Zehra [Piri Reis University, 34940 Tuzla-Istanbul (Turkey); Vignolo, Patrizia [Universite de Nice-Sophia Antipolis, Institut non Lineaire de Nice, CNRS, 1361 route des Lucioles, F-06560 Valbonne (France)

    2011-12-15T23:59:59.000Z

    We study the localization properties of noninteracting waves propagating in a speckle-like potential superposed on a one-dimensional lattice. Using a combined decimation-renormalization procedure, we estimate the localization length for a tight-binding Hamiltonian where site energies are square-sinc-correlated random variables. By decreasing the width of the correlation function, the disorder patterns approach a {delta}-correlated disorder, and the localization length becomes almost energy independent in the strong disorder limit. We show that this regime can be reached for a size of the speckle grains on the order of (lower than) four lattice steps.

  18. 3D-Printed Car by Local Motors- The Strati

    Broader source: Energy.gov [DOE]

    A timelapse video of the production process behind The Strati - the 3D-printed car by Local Motors, which manufactured with Oak Ridge National Laboratory (ORNL) and delivered at the International Manufacturing Technology Show (IMTS) in September of 2014.

  19. Geothermal policy development program: expediting the local geothermal permitting process

    SciTech Connect (OSTI)

    Not Available

    1981-07-01T23:59:59.000Z

    For a number of years, concerns have been raised about the length of time and the complexity involved in obtaining required permits in order to develop the geothermal resource at the Geysers. Perhaps the most important factor is jurisdiction. At the Geysers, all three levels of government - local, state, and federal - exercise significant authority over various aspects of geothermal development. In addition, several agencies within each governmental level play an active role in the permitting process. The present study is concerned primarily with the local permitting process, and the ways in which this process could be expedited. This report begins by looking at the local role in the overall permitting process, and then reviews the findings and conclusions that have been reached in other studies of the problem. This is followed by a case study evaluation of recent permitting experience in the four Geysers-Calistoga KGRA counties, and the report concludes by outlining several approaches to expediting the local permitting process.

  20. Sparse Bayesian information filters for localization and mapping

    E-Print Network [OSTI]

    Walter, Matthew R

    2008-01-01T23:59:59.000Z

    This thesis formulates an estimation framework for Simultaneous Localization and Mapping (SLAM) that addresses the problem of scalability in large environments. We describe an estimation-theoretic algorithm that achieves ...