Sample records for terms definition dimensions

  1. Motivation and definitions Dimension theory

    E-Print Network [OSTI]

    Climenhaga, Vaughn

    Motivation and definitions Dimension theory Results: old and new Multifractal analysis of Birkhoff averages #12;Motivation and definitions Dimension theory Results: old and new Outline 1 Motivation and definitions A multifractal decomposition Example 2 Dimension theory Quantifying level sets A dynamically

  2. Crop Insurance Terms and Definitions

    E-Print Network [OSTI]

    Stokes, Kenneth; Waller, Mark L.; Outlaw, Joe; Barnaby, G. A. Art

    2008-10-17T23:59:59.000Z

    This publication is a glossary of terms used by the crop insurance industry. There are definitions for terms used in crop insurance documents and for terms pertaining to coverage levels, farming, reports, units and parties to contracts....

  3. Formulas & definitions to know Formulas & definitions that will be provided if Distance formula in 3 dimensions compab = ab

    E-Print Network [OSTI]

    Lozano-Robledo, Alvaro

    Formulas & definitions to know Formulas & definitions that will be provided if needed Distance formula in 3 dimensions compab = a·b |a| Equation of a sphere W = F · D (work, force, distance) Vector of differentiability for a function of two variables arc length formula, arc length function the graph of a function

  4. LCLS USERS' ORGANIZATION CHARTER AND BY-LAWS A. Terms and definitions

    E-Print Network [OSTI]

    Wechsler, Risa H.

    LCLS USERS' ORGANIZATION CHARTER AND BY-LAWS A. Terms and definitions Several definitions and acronyms used in this document are defined below LCLS Linac Coherent Light Source LCLS/UO LCLS Users' Organization LCLS/UOEC LCLS Users' Organization Executive Committee SLAC Stanford Linear Accelerator Center

  5. Seismic Safety Margins Research Program. Phase I. Interim definition of terms

    SciTech Connect (OSTI)

    Smith, P.D.; Dong, R.G.

    1980-12-19T23:59:59.000Z

    This report documents interim definitions of terms in the Seismic Safety Margins Research Program (SSMRP). Intent is to establish a common-based terminology integral to the probabilistic methods that predict more realistically the behavior of nuclear power plants during an earthquake. These definitions are a response to a request by the Nuclear Regulatory Commission Advisory Committee on Reactor Safeguards at its meeting held November 15-16, 1979.

  6. Radiative generation of the CPT-even gauge term of the SME from a dimension-five nonminimal coupling term

    E-Print Network [OSTI]

    R. Casana; M. M. Ferreira Jr; R. V. Maluf; F. E. P. dos Santos

    2013-09-07T23:59:59.000Z

    In this letter we show for the first time that the usual CPT-even gauge term of the standard model extension (SME) can be radiatively generated, in a gauge invariant level, in the context of a modified QED endowed with a dimension-five nonminimal coupling term recently proposed in the literature. As a consequence, the existing upper bounds on the coefficients of the tensor $(K_{F}) $ can be used improve the bounds on the magnitude of the nonminimal coupling, $\\lambda(K_{F}),$ by the factors $10^{5}$ or $10^{25}.$ The nonminimal coupling also generates higher-order derivative contributions to the gauge field effective action quadratic terms.

  7. Radiative generation of the CPT-even gauge term of the SME from a dimension-five nonminimal coupling term

    E-Print Network [OSTI]

    Casana, R; Maluf, R V; Santos, F E P dos

    2013-01-01T23:59:59.000Z

    In this letter we show for the first time that the usual CPT-even gauge term of the standard model extension (SME) can be radiatively generated, \\textbf{}in a gauge invariant level, in the context of a modified QED endowed with a dimension-five nonminimal coupling term recently proposed in the literature. As a consequence, the existing upper bounds on the coefficients of the tensor $(K_{F}) $ can be used improve the bounds on the magnitude of the nonminimal coupling, $\\lambda(K_{F}),$ by the factors $10^{5}$ or $10^{25}.$ The nonminimal coupling also generates higher-order derivative contributions to the gauge field effective action quadratic terms.

  8. Uncertainties associated with the definition of a hydrologic source term for the Nevada Test Site

    SciTech Connect (OSTI)

    Smith, D.K.; Esser, B.K. [Lawrence Livermore National Lab., CA (United States); Thompson, J.L. [Los Alamos National Lab., NM (United States)

    1995-05-01T23:59:59.000Z

    The U.S. Department of Energy, Nevada Operations Office (DOE/NV) Environmental Restoration Division is seeking to evaluate groundwater contamination resulting from 30 years of underground nuclear testing at the Nevada Test Site (NTS). This evaluation requires knowledge about what radioactive materials are in the groundwater and how they are transported through the underground environment. This information coupled with models of groundwater flow (flow paths and flow rates) will enable predictions of the arrival of each radionuclide at a selected receptor site. Risk assessment models will then be used to calculate the expected environmental and human doses. The accuracy of our predictions depends on the validity of our hydrologic and risk assessment models and on the quality of the data for radionuclide concentrations in ground water at each underground nuclear test site. This paper summarizes what we currently know about radioactive material in NTS groundwater and suggests how we can best use our limited knowledge to proceed with initial modeling efforts. The amount of a radionuclide available for transport in groundwater at the site of an underground nuclear test is called the hydrologic source term. The radiologic source term is the total amount of residual radionuclides remaining after an underground nuclear test. The hydrologic source term is smaller than the radiologic source term because some or most of the radionuclide residual cannot be transported by groundwater. The radiologic source term has been determined for each of the underground nuclear tests fired at the NTS; however, the hydrologic source term has been estimated from measurements at only a few sites.

  9. Vocabulary of Definitions | EMSL

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

    of Definitions Vocabulary of Definitions 800 Terms for Surface Chemical Analysis - ISO This information is provided through the cooperation of EMSL and the ASTM E42...

  10. Definition of Total Energy budget equation in terms of moist-air Enthalpy surface flux

    E-Print Network [OSTI]

    Marquet, Pascal

    2015-01-01T23:59:59.000Z

    Uncertainty exists concerning the proper formulation of surface heat fluxes, namely the sum of "sensible" and "latent" heat fluxes, and in fact concerning these two fluxes if they are considered as separate fluxes. In fact, eddy flux of moist-air energy must be defined as the eddy transfer of moist-air specific enthalpy ($\\overline{w' h'}$), where the specific enthalpy ($h$) is equal to the internal energy of moist air plus the pressure divided by the density (namely $h = e_{\\rm int} + p/\\rho$). The fundamental issue is to compute this local (specific) moist-air enthalpy ($h$), and in particular to determine absolute reference value of enthalpies for dry air and water vapour $(h_d)_{\\rm ref}$ and $(h_v)_{\\rm ref}$. New results shown in Marquet (QJRMS 2015, arXiv:1401.3125) are based on the Third-law of Thermodynamics and can allow these computations. In this note, this approach is taken to show that Third-law based values of moist-air enthalpy fluxes is the sum of two terms. These two terms are similar to wha...

  11. Dosimetric Factors Associated With Long-Term Dysphagia After Definitive Radiotherapy for Squamous Cell Carcinoma of the Head and Neck

    SciTech Connect (OSTI)

    Caudell, Jimmy J.; Schaner, Philip E. [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL (United States); Desmond, Renee A. [Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL (United States); Meredith, Ruby F.; Spencer, Sharon A. [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL (United States); Bonner, James A., E-mail: jabonner@uabmc.ed [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL (United States)

    2010-02-01T23:59:59.000Z

    Purpose: Intensification of radiotherapy and chemotherapy for head-and-neck cancer may lead to increased rates of dysphagia. Dosimetric predictors of objective findings of long-term dysphagia were sought. Methods and Materials: From an institutional database, 83 patients were identified who underwent definitive intensity-modulated radiotherapy for squamous cell carcinoma of the head and neck, after exclusion of those who were treated for a second or recurrent head-and-neck primary lesion, had locoregional recurrence at any time, had less than 12 months of follow-up, or had postoperative radiotherapy. Dosimetric parameters were analyzed relative to three objective endpoints as a surrogate for severe long-term dysphagia: percutaneous endoscopic gastrostomy (PEG) tube dependence at 12 months, aspiration on modified barium swallow, or pharyngoesophageal stricture requiring dilation. Results: Mean dose greater than 41 Gy and volume receiving 60 Gy (V{sub 60}) greater than 24% to the larynx were significantly associated with PEG tube dependence and aspiration. V{sub 60} greater than 12% to the inferior pharyngeal constrictor was also significantly associated with increased PEG tube dependence and aspiration. V{sub 65} greater than 33% to the superior pharyngeal constrictor or greater than 75% to the middle pharyngeal constrictor was associated with pharyngoesophageal stricture requiring dilation. Conclusions: Doses to the larynx and pharyngeal constrictors predicted long-term swallowing complications, even when controlled for other clinical factors. The addition of these structures to intensity-modulated radiotherapy optimization may reduce the incidence of dysphagia, although cautious clinical validation is necessary.

  12. SECTION SEVEN DEFINITION OF TERMS Additional Subject Group of related modules within an academic discipline which is taken in addition to

    E-Print Network [OSTI]

    Davies, Christopher

    SECTION SEVEN DEFINITION OF TERMS Additional Subject Group of related modules within an academic(s). Single / Double / Triple module Unit of study with a value of 10/20/30 credits. Subject Group of related modules within one academic discipline. Timetable Group Groups within which a module's teaching and other

  13. Definitions of Marketing Terms

    E-Print Network [OSTI]

    McCorkle, Dean; Dhuyvetter, Kevin C.

    2008-12-05T23:59:59.000Z

    Extension Service.. Dean McCorkle and Kevin Dhuyvetter* Cash Market Cash marketing basis ? the difference be- tween a cash price and a futures price of a par- ticular commodity on a given futures exchange. It is calculated as: Basis = cash price - futures...

  14. Definitions of Marketing Terms

    E-Print Network [OSTI]

    McCorkle, Dean; Dhuyvetter, Kevin C.

    2008-12-05T23:59:59.000Z

    projected livestock base weight (after shrink) and actual sale weight (pay weight). Price slides are necessary because heavi- er weight cattle usually sell for a lower price per hundredweight than lighter weight cattle. Retained ownership ? vertically... Extension Service.. Dean McCorkle and Kevin Dhuyvetter* Cash Market Cash marketing basis ? the difference be- tween a cash price and a futures price of a par- ticular commodity on a given futures exchange. It is calculated as: Basis = cash price - futures...

  15. Quantization rule solution to the Hulthn potential in arbitrary dimension by a new approximate scheme for the centrifugal term

    E-Print Network [OSTI]

    Sameer M. Ikhdair

    2012-03-13T23:59:59.000Z

    The bound state energies and wave functions for a particle exposed to the Hulth\\'en potential field in the D-dimensional space are obtained within the improved quantization rule for any arbitrary l state. The present approximation scheme used to deal with the centrifugal term in the effective Hulth\\'en potential is systematic and accurate. The solutions for the three-dimensional (D=3) case and the s-wave (l=0) case are briefly discussed. Keywords: Hulth\\'en potential, improved quantization rule, approximation schemes. 03.65.Ge, 12.39.Jh

  16. SEC. 203. TRIBAL PARTNERSHIP PROGRAM. (a) DEFINITION OF INDIAN TRIBE.--In this section, the term ``Indian tribe'' has the

    E-Print Network [OSTI]

    US Army Corps of Engineers

    ``Indian tribe'' has the meaning given the term in section 4 of the Indian Self-Determination and Education and the heads of other Federal agencies, the Secretary may study and determine the feasibility of carrying out) are located primarily within Indian country (as defined in section 1151 of title 18, United States Code

  17. Communication Definitions... general definition

    E-Print Network [OSTI]

    Jones, Ian L.

    Communication Definitions... general definition "the process of conveying information from a sender to a receiver with the use of a medium in which the communicated information is understood the same way by both sender and receiver" (Wikipedia)! Biological communication Action by one organism (individual

  18. Field Definitions, Spectrum and Universality in Effective String Theories

    E-Print Network [OSTI]

    N. D. Hari Dass; Peter Matlock

    2006-12-28T23:59:59.000Z

    It is shown, by explicit calculation, that the third-order terms in inverse string length in the spectrum of the effective string theories of Polchinski and Strominger are also the same as in Nambu-Goto theory, in addition to the universal Luescher terms. While the Nambu-Goto theory is inconsistent outside the critical dimension, the Polchinski-Strominger theory is by construction consistent for any space-time dimension. In the analysis of the spectrum, care is taken not to use any field redefinition, as it is felt that this has the potential to obscure important points. Nevertheless, as field redefinition is an important tool and the definition of the field should be made precise, a careful analysis of the choice of field definition leading to the terms in the action is also presented. Further, it is shown how a choice of field definition can be made in a systematic way at higher orders. To this end the transformation of measure involved is calculated, in the context of effective string theory, and thereby a quantum evaluation made of equivalence of theories related by a field redefinition. It is found that there are interesting possibilities resulting from a redefinition of fluctuation field.

  19. FISH AND WILDLIFE PROGRAM G-1 December 14, 1994 The definitions in this list have no legal significance and are provided only for clarification of terms used

    E-Print Network [OSTI]

    GLOSSARY FISH AND WILDLIFE PROGRAM G-1 December 14, 1994 GLOSSARY The definitions in this list have fish in the water of a particular stream before their release into that stream. Act -- See Northwest of different elements of the system are better understood. adult equivalent population The number of fish

  20. Genomic definition of species

    SciTech Connect (OSTI)

    Crkvenjakov, R.; Drmanac, R.

    1991-07-01T23:59:59.000Z

    The subject of this paper is the definition of species based on the assumption that genome is the fundamental level for the origin and maintenance of biological diversity. For this view to be logically consistent it is necessary to assume the existence and operation of the new law which we call genome law. For this reason the genome law is included in the explanation of species phenomenon presented here even if its precise formulation and elaboration are left for the future. The intellectual underpinnings of this definition can be traced to Goldschmidt. We wish to explore some philosophical aspects of the definition of species in terms of the genome. The point of proposing the definition on these grounds is that any real advance in evolutionary theory has to be correct in both its philosophy and its science.

  1. Bound states of the Klein-Gordon equation in D-dimensions with some physical scalar and vector exponential-type potentials including orbital centrifugal term

    E-Print Network [OSTI]

    Sameer M. Ikhdair

    2011-10-05T23:59:59.000Z

    The approximate analytic bound state solutions of the Klein-Gordon equation with equal scalar and vector exponential-type potentials including the centrifugal potential term are obtained for any arbitrary orbital angular momentum number l and dimensional space D. The relativistic/non-relativistic energy spectrum equation and the corresponding unnormalized radial wave functions, in terms of the Jacobi polynomials P_{n}^{({\\alpha},{\\beta})}(z), where {\\alpha}>-1, {\\beta}>-1 and z\\in[-1,+1] or the generalized hypergeometric functions _{2}F_{1}(a,b;c;z), are found. The Nikiforov-Uvarov (NU) method is used in the solution. The solutions of the Eckart, Rosen-Morse, Hulth\\'en and Woods-Saxon potential models can be easily obtained from these solutions. Our results are identical with those ones appearing in the literature. Finally, under the PT-symmetry, we can easily obtain the bound state solutions of the trigonometric Rosen-Morse potential.

  2. Definitions Calibration

    E-Print Network [OSTI]

    Weinberger, Hans

    Definitions Calibration Parameter Dynamics Monte Carlo Simulation Concluding Remarks Using the SABR Model Jason Vinar Ameriprise Workshop 2012 Jason Vinar Using the SABR Model #12;Definitions Calibration which attempts to capture the volatility smile. This project will consist of Calibrating the SABR model

  3. Fractal Dimension for Fractal Structures: A Hausdorff Approach

    E-Print Network [OSTI]

    M. A. Snchez-Granero; Manuel Fernndez-Martnez

    2010-07-22T23:59:59.000Z

    This paper provides a new model to compute the fractal dimension of a subset on a generalized-fractal space. Recall that fractal structures are a perfect place where a new definition of fractal dimension can be given, so we perform a suitable discretization of the Hausdorff theory of fractal dimension. We also find some connections between our definition and the classical ones and also with fractal dimensions I & II (see http://arxiv.org/submit/0080421/pdf). Therefore, we generalize them and obtain an easy method in order to calculate the fractal dimension of strict self-similar sets which are not required to verify the open set condition.

  4. 2010 Manufacturing Energy and Carbon Footprints: Definitions...

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

    key terms and details assumptions and references used in the Manufacturing Energy and Carbon Footprints (2010 MECS) Definitions and Assumptions for the Manufacturing Energy and...

  5. Twist operators in higher dimensions

    E-Print Network [OSTI]

    Ling-Yan Hung; Robert C. Myers; Michael Smolkin

    2014-07-24T23:59:59.000Z

    We study twist operators in higher dimensional CFT's. In particular, we express their conformal dimension in terms of the energy density for the CFT in a particular thermal ensemble. We construct an expansion of the conformal dimension in power series around n=1, with n being replica parameter. We show that the coefficients in this expansion are determined by higher point correlations of the energy-momentum tensor. In particular, the first and second terms, i.e. the first and second derivatives of the scaling dimension, have a simple universal form. We test these results using holography and free field theory computations, finding agreement in both cases. We also consider the `operator product expansion' of spherical twist operators and finally, we examine the behaviour of correlators of twist operators with other operators in the limit n ->1.

  6. Octupolar order in two dimensions

    E-Print Network [OSTI]

    Epifanio G. Virga

    2015-03-16T23:59:59.000Z

    Octupolar order is described in two space dimensions in terms of the maxima (and conjugated minima) of the probability density associated with a third-rank, fully symmetric and traceless tensor. Such a representation is shown to be equivalent to diagonalizing the relevant third-rank tensor, an equivalence which however is only valid in the two-dimensional case.

  7. DEFORMATION-BASED NONLINEAR DIMENSION REDUCTION: APPLICATIONS TO NUCLEAR MORPHOMETRY

    E-Print Network [OSTI]

    Gordon, Geoffrey J.

    DEFORMATION-BASED NONLINEAR DIMENSION REDUCTION: APPLICATIONS TO NUCLEAR MORPHOMETRY Gustavo K, contrary to common intuition, the most likely nuclear shape configuration is not symmetric. Index Terms-- Nuclear shape analysis, nonlinear, dimension reduction, image registration. 1. INTRODUCTION Under

  8. ACKNOWLEDGEMENTS ..................................................................................4 DEFINITIONS OF KEY TERMS .........................................................................6

    E-Print Network [OSTI]

    Escher, Christine

    ) means the chemical compound containing one atom of carbon and two atoms of oxygen. (2) "Carbon dioxide) "Global Warming Potential factor" (GWP) means the radiative forcing impact of one mass-based unit. For instance, methane (CH4) has a GWP of 23, meaning that every gram of methane will trap 23 times as much

  9. Industry Terms and Definitions | 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 beingZealand Jump to: navigation, search OpenEIHesperia,IDGWPIndiantown, Florida:

  10. FRACTAL DIMENSION ESTIMATION: EMPIRICAL MODE DECOMPOSITION VERSUS WAVELETS

    E-Print Network [OSTI]

    Gonçalves, Paulo

    FRACTAL DIMENSION ESTIMATION: EMPIRICAL MODE DECOMPOSITION VERSUS WAVELETS Paulo Gonc¸alves INRIA, France. {firstname.lastname}@ens-lyon.fr ABSTRACT We address the problem of fractal dimension estimation motions. Index Terms-- fractal dimension, regularity exponents, wavelet transform, EMD 1. MOTIVATION

  11. Universal Extra Dimension

    E-Print Network [OSTI]

    Anirban Kundu

    2008-06-24T23:59:59.000Z

    This is a brief discussion of the following features of the Universal Extra Dimension (UED) model: (i) Formulation, (ii) Indirect bounds, (iii) Collider search and the Inverse Problem, (iv) Astrophysical bounds, and (v) UED with two extra dimensions.

  12. Critical Gravity in Four Dimensions

    SciTech Connect (OSTI)

    Lue, H. [China Economics and Management Academy, Central University of Finance and Economics, Beijing 100081 (China); Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen 518060 (China); Pope, C. N. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, Texas 77843 (United States); DAMTP, Centre for Mathematical Sciences, Cambridge University, Wilberforce Road, Cambridge CB3 OWA (United Kingdom)

    2011-05-06T23:59:59.000Z

    We study four-dimensional gravity theories that are rendered renormalizable by the inclusion of curvature-squared terms to the usual Einstein action with a cosmological constant. By choosing the parameters appropriately, the massive scalar mode can be eliminated and the massive spin-2 mode can become massless. This ''critical'' theory may be viewed as a four-dimensional analogue of chiral topologically massive gravity, or of critical 'new massive gravity' with a cosmological constant, in three dimensions. We find that the on-shell energy for the remaining massless gravitons vanishes. There are also logarithmic spin-2 modes, which have positive energy. The mass and entropy of standard Schwarzschild-type black holes vanish. The critical theory might provide a consistent toy model for quantum gravity in four dimensions.

  13. Definitions of dwelling

    E-Print Network [OSTI]

    Olgyay, Victor W. (Victor Wayne)

    1986-01-01T23:59:59.000Z

    Home is an elusive concept. In one manner it is highly specific and individual in its definition, and in other aspects it is ubiquitous, present in our every act. In this thesis I explore several possible definitions of ...

  14. Gravity, Dimension, Equilibrium, & Thermodynamics

    E-Print Network [OSTI]

    Jerome Perez

    2006-03-30T23:59:59.000Z

    Is it actually possible to interpret gravitation as space's property in a pure classical way. Then, we note that extended self-gravitating system equilibrium depends directly on the number of dimension of the space in which it evolves. Given those precisions, we review the principal thermodynamical knowledge in the context of classical gravity with arbitrary dimension of space. Stability analyses for bounded 3D systems, namely the Antonov instability paradigm, are then rapproched to some amazing properties of globular clusters and galaxies.

  15. Normalization conventions for Newton's constant and the Planck scale in arbitrary spacetime dimension

    E-Print Network [OSTI]

    Sean P. Robinson

    2006-09-17T23:59:59.000Z

    We calculate, in d spacetime dimensions, the relationship between the coefficient 1/K^2 of the Einstein-Hilbert term in the action of general relativity and the coefficient G_N of the force law that results from the Newtonian limit of general relativity. The result is K^2=2[(d-2)/(d-3)]Vol(S^[d-2])G_N, where Vol(S^n) is the volume of the unit n-sphere. While the d=4 case is an elementary calculation in any general relativity text, the arbitrary case presented here is slightly less well known. We discuss the relevance of this result for the definition of the so-called "reduced Planck mass" and comment very briefly on the implications for brane world models. [abstract abridged

  16. Dimension of physical systems, information processing, and thermodynamics

    E-Print Network [OSTI]

    Nicolas Brunner; Marc Kaplan; Anthony Leverrier; Paul Skrzypczyk

    2014-12-18T23:59:59.000Z

    We ask how quantum theory compares to more general physical theories from the point of view of dimension. To do so, we first give two model independent definition of the dimension of physical systems, based on measurements and on the capacity of storing information. While both definitions are equivalent in classical and quantum mechanics, they are in general different in generalized probabilistic theories. We discuss in detail the case of a theory known as 'boxworld', and show that such a theory features systems with a dimension mismatch. This dimension mismatch can be made arbitrarily large by using an amplification procedure. Furthermore, we show that the dimension mismatch of boxworld has strong consequences on its power for performing information-theoretic tasks, leading to the collapse of communication complexity and to the violation of information causality. Finally, we discuss the consequences of a dimension mismatch from the perspective of thermodynamics, and ask whether this effect could break Landauer's erasure principle and thus the second law.

  17. Big Mysteries: Extra Dimensions

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-08-07T23:59:59.000Z

    The weakness of gravity compared to the other subatomic forces is a real mystery. While nobody knows the answer, one credible solution is that gravity has access to more spatial dimensions than the other three known forces. In this video, Fermilab's Dr. Don Lincoln describes this idea, with the help of some very urbane characters.

  18. Model or tool? New definitions for translational research

    E-Print Network [OSTI]

    Sive, Hazel

    The term model often describes non-human biological systems that are used to obtain a better understanding of human disorders. According to the most stringent definition, an animal model would display exactly the same ...

  19. M(atrix)-Theory in Various Dimensions

    E-Print Network [OSTI]

    David Berenstein; Richard Corrado

    1997-02-14T23:59:59.000Z

    We demonstrate the precise numerical correspondence between long range scattering of supergravitons and membranes in supergravity in the infinite momentum frame and in M(atrix)-Theory, both in 11 dimensions and for toroidal compactifications. We also identify wrapped membranes in terms of topological invariants of the vector bundles associated to the field theory description of compactified M(atrix)-Theory. We use these results to check the realization of T-duality in M(atrix)-Theory.

  20. Web Style Guide Fixed Dimension

    E-Print Network [OSTI]

    Web Style Guide KEY: Fixed Dimension: Variable Dimension: V1.1, SEPTEMBER 2010 #12;Page 2 Table PAGE NEWS & EVENTS PAGE Fonts & Colors FONTS COLORS Web Writing Guidelines WEB WRITING GUIDELINES Web

  1. Power/Privilege Definitions

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Major; People's Institute for Survival and Beyond, New Orleans 2. Power is the ability to define reality and to convince other people that it is their definition. ~ Dr. Wade Nobles 3. Power is the capacity to act. 4 different cultures. [JL] RACISM Racism is race prejudice plus power [See Racist]. People's Institute calls

  2. 3 Library Regulations Definitions

    E-Print Network [OSTI]

    Mottram, Nigel

    3 Library Regulations Definitions In Regulation 3: 'Library' means the University Library as defined in Regulation 3.1; 'Library staff' means the staff of the University Library; 'Librarian' means the University Librarian and Head of Information Resources Directorate or nominee; `Library Committee' means

  3. Definitions Numbered Space

    E-Print Network [OSTI]

    Behmer, Spencer T.

    Definitions · Numbered Space ­ a single space marked with a number and reserved for a single permit 24/7 · Unnumbered Space ­ a space which can be used by any customer allowed to park in that lot. High Low Average Question 4: If I buy a staff permit for an UNNUMBERED* space in a non-gated surface

  4. Geometrically induced magnetic catalysis and critical dimensions

    E-Print Network [OSTI]

    Antonino Flachi; Kenji Fukushima; Vincenzo Vitagliano

    2015-02-21T23:59:59.000Z

    We discuss the combined effect of magnetic fields and geometry in interacting fermionic systems. At leading order in the heat-kernel expansion, the infrared singularity (that in flat space leads to the magnetic catalysis) is regulated by the chiral gap effect and the catalysis is deactivated by effect of the curvature. We discover that an infrared singularity may reappear from higher-order terms in the heat kernel expansion leading to a novel form of geometrically induced magnetic catalysis (absent in flat space). The dynamical mass squared is then modified not only due to the chiral gap effect by an amount proportional to the curvature, but also by a magnetic shift $\\propto (4-D)eB$ where $D$ represents the number of space-time dimensions. We argue that $D=4$ is a critical dimension across which the behaviour of the magnetic shift changes qualitatively.

  5. Geometrically induced magnetic catalysis and critical dimensions

    E-Print Network [OSTI]

    Flachi, Antonino; Vitagliano, Vincenzo

    2015-01-01T23:59:59.000Z

    We discuss the combined effect of magnetic fields and geometry in interacting fermionic systems. At leading order in the heat-kernel expansion, the infrared singularity (that in flat space leads to the magnetic catalysis) is regulated by the chiral gap effect and the catalysis is deactivated by effect of the curvature. We discover that an infrared singularity may reappear from higher-order terms in the heat kernel expansion leading to a novel form of geometrically induced magnetic catalysis (absent in flat space). The dynamical mass squared is then modified not only due to the chiral gap effect by an amount proportional to the curvature, but also by a magnetic shift $\\propto (4-D)eB$ where $D$ represents the number of space-time dimensions. We argue that $D=4$ is a critical dimension across which the behaviour of the magnetic shift changes qualitatively.

  6. Geometrically induced magnetic catalysis and critical dimensions

    E-Print Network [OSTI]

    Antonino Flachi; Kenji Fukushima; Vincenzo Vitagliano

    2015-04-27T23:59:59.000Z

    We discuss the combined effect of magnetic fields and geometry in interacting fermionic systems. At leading order in the heat-kernel expansion, the infrared singularity (that in flat space leads to the magnetic catalysis) is regulated by the chiral gap effect, and the catalysis is deactivated by the effect of the scalar curvature. We discover that an infrared singularity is found in higher-order terms that mix the magnetic field with curvature, and these lead to a novel form of geometrically induced magnetic catalysis. The dynamical mass squared is then modified not only due to the chiral gap effect by an amount proportional to the curvature, but also by a magnetic shift $\\propto (4-D)eB$, where $D$ represents the number of space-time dimensions. We argue that $D=4$ is a critical dimension across which the behavior of the magnetic shift changes qualitatively.

  7. Running couplings in extra dimensions

    E-Print Network [OSTI]

    Jisuke Kubo; Haruhiko Terao; George Zoupanos

    2000-10-07T23:59:59.000Z

    The regularization scheme dependence of running couplings in extra compactified dimensions is discussed. We examine several regularization schemes explicitly in order to analyze the scheme dependence of the Kaluza-Klein threshold effects, which cause the power law running, in the case of the scalar theory in five dimensions with one dimension compactified. It is found that in 1-loop order, the net difference in the running of the coupling among the different schemes is reduced to be rather small after finite renormalization. An additional comment concerns the running couplings in the warped extra dimensions which are found to be regularization dependent above TeV scale.

  8. Reduced-dimension transistors: Reduced-dimension transistors

    E-Print Network [OSTI]

    Pulfrey, David L.

    1 Reduced-dimension transistors: the HEMT LECTURE 20 · Reduced-dimension transistors · HEMT · 2-D;8 For a finite well · Wavefunction not completely confined · Use undoped spacer #12;9 Employment of a spacer scattering (µ ). · Electrons and donors separated no I I scattering, i.e., µ · Undoped spacer also helps

  9. Mass Generation and Related Issues from Exotic Higher Dimensions

    E-Print Network [OSTI]

    M. Rojas; M. A. De Andrade; L. P. Colatto; J. L. Matheus-Valle; L. P. G. De Assis; J. A. Helayel-Neto

    2011-11-09T23:59:59.000Z

    The main purpose of this work is to show that massless Dirac equation formulated for non-interacting Majorana-Weyl spinors in higher dimensions, particularly in D=1+9 and D=5+5, can lead to an interpretation of massive Majorana and Dirac spinors in D=1+3. By adopting suitable representations of the Dirac matrices in higher dimensions, we pursue the investigation of which higher dimensional space-times and which mass-shell relation concerning massless Dirac equations in higher dimensions may induce massive spinors in D=1+3. The mixing of the chiral fermions in higher dimensions may induce a mechanism such that four massive Majorana fermions may show up and, at an appropriate limit an almost zero and a huge mass show up with corresponding left-handed and right-handed eigenstates. This mechanism, in a peculiar way, could reassess the See-Saw scheme associated to neutrino with Majorana-type masses. Remarkably the masses of the particles are fixed by the dimension decoupling/reduction scheme based on the mass Lorentz invariant term, where one set of the decoupled dimensions are the "target" coordinates frame and the other set of coordinates is the composing block of the mass term in lower dimensions. This proposal should allow us to understand the generation of hierarchies, such as the fourth generation, for the fermionic masses in D=1+3, or in lower dimensions in general, starting from the constraints between the energy and the momentum in D=n+n. For the initial D=5+5 Majorana-Weyl spinors framework using the Weyl representation to the Dirac matrices we observe an intriguing decomposition of space-time that result in two very equivalent D=1+4 massive spinors which mass term, in D=1+3 included, is originated from the remained/decoupled component and that could induce a Brane-World mechanism.

  10. Definitions and motivation More theory

    E-Print Network [OSTI]

    Duval, Art

    Definitions and motivation Examples More theory The Importance of being Equivalent: The Ubiquity of being Equivalent: #12;Definitions and motivation Examples More theory Fractions Geometry Real life Equivalent: #12;Definitions and motivation Examples More theory Fractions Geometry Real life Summary Equality

  11. Definitions and motivation More theory

    E-Print Network [OSTI]

    Duval, Art

    Definitions and motivation Examples More theory Equivalence relations in mathematics, K-16+ Art;Definitions and motivation Examples More theory Fractions Geometry Real life One reason fractions are hard 2 3 Duval Equivalence relations in mathematics, K-16+ #12;Definitions and motivation Examples More theory

  12. Information systems definition architecture

    SciTech Connect (OSTI)

    Calapristi, A.J.

    1996-06-20T23:59:59.000Z

    The Tank Waste Remediation System (TWRS) Information Systems Definition architecture evaluated information Management (IM) processes in several key organizations. The intent of the study is to identify improvements in TWRS IM processes that will enable better support to the TWRS mission, and accommodate changes in TWRS business environment. The ultimate goals of the study are to reduce IM costs, Manage the configuration of TWRS IM elements, and improve IM-related process performance.

  13. String universality in ten dimensions

    E-Print Network [OSTI]

    Allan Adams; Oliver DeWolfe; Washington Taylor

    2014-10-29T23:59:59.000Z

    We show that the ${\\cal N}=1$ supergravity theories in ten dimensions with gauge groups $U(1)^{496}$ and $E_8 \\times U(1)^{248}$ are not consistent quantum theories. Cancellation of anomalies cannot be made compatible with supersymmetry and abelian gauge invariance. Thus, in ten dimensions all supersymmetric theories of gravity without known inconsistencies are realized in string theory.

  14. Interacting spin-2 fields in three dimensions

    E-Print Network [OSTI]

    Afshar, Hamid R; Merbis, Wout

    2015-01-01T23:59:59.000Z

    Using the frame formulation of multi-gravity in three dimensions, we show that demanding the presence of secondary constraints which remove the Boulware-Deser ghosts restricts the possible interaction terms of the theory and identifies invertible frame field combinations whose effective metric may consistently couple to matter. The resulting ghost-free theories can be represented by theory graphs which are trees. In the case of three frame fields, we explicitly show that the requirement of positive masses and energies for the bulk spin-2 modes in AdS$_3$ is consistent with a positive central charge for the putative dual CFT$_2$.

  15. Interacting spin-2 fields in three dimensions

    E-Print Network [OSTI]

    Hamid R. Afshar; Eric A. Bergshoeff; Wout Merbis

    2015-01-14T23:59:59.000Z

    Using the frame formulation of multi-gravity in three dimensions, we show that demanding the presence of secondary constraints which remove the Boulware-Deser ghosts restricts the possible interaction terms of the theory and identifies invertible frame field combinations whose effective metric may consistently couple to matter. The resulting ghost-free theories can be represented by theory graphs which are trees. In the case of three frame fields, we explicitly show that the requirement of positive masses and energies for the bulk spin-2 modes in AdS$_3$ is consistent with a positive central charge for the putative dual CFT$_2$.

  16. Soot Nanostructure: Definition, Quantification, and Implications...

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

    Soot Nanostructure: Definition, Quantification, and Implications Soot Nanostructure: Definition, Quantification, and Implications 2004 Diesel Engine Emissions Reduction (DEER)...

  17. A Simple Linear Time (1 + )-Approximation Algorithm for k-Means Clustering in Any Dimensions

    E-Print Network [OSTI]

    Sen, Sandeep

    A Simple Linear Time (1 + )-Approximation Algorithm for k-Means Clustering in Any Dimensions Amit@cse.iitd.ernet.in Abstract We present the first linear time (1+)-approximation al- gorithm for the k-means problem for fixed of the most popular definitions of cluster- ing is the k-means clustering problem. Given a set of points P

  18. Notes and Definitions

    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 EnergyCenterDioxideDocumentationThreeNewsfuelNotes and Definitions

  19. Running Scaling Dimensions in Holographic Renormalization Group Flows

    E-Print Network [OSTI]

    Wolfgang Mueck

    2010-06-15T23:59:59.000Z

    Holographic renormalization group flows can be interpreted in terms of effective field theory. Based on such an interpretation, a formula for the running scaling dimensions of gauge-invariant operators along such flows is proposed. The formula is checked for some simple examples from the AdS/CFT correspondence, but can be applied also in non-AdS/non-CFT cases.

  20. Proof and Definition in Logic and Type Theory Proof and Definition in Logic and Type Theory

    E-Print Network [OSTI]

    Adams, Robin

    Proof and Definition in Logic and Type Theory Proof and Definition in Logic and Type Theory Robin questions. #12;Proof and Definition in Logic and Type Theory Definition and Proof Definition and proof -- but they are not in predicate logic or type theory. #12;Proof and Definition in Logic and Type Theory Methods of Definition

  1. Packing Dimension Profiles and Levy Processes D. Khoshnevisan, R.L. Schilling and Y. Xiao

    E-Print Network [OSTI]

    Khoshnevisan, Davar

    that computes the Hausdorff dimension dimH X(F) of X(F), see [13] and its extensive bibliography. Let dimP denote the packing dimension. The main goal of the present paper is to evaluate dimP X(F) in terms study the packing dimension dimP X(F). Let us point out two noteworthy cases where dimP X(F) has been

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions Key Terms

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions Key TermsCrude

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions Key TermsCrudeAPI

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputsTotal Stocks Definitions Key Terms

  6. Social Media Ad Metrics Definitions

    E-Print Network [OSTI]

    Collins, Gary S.

    these metrics to encourage growth through consistency. Social media speaks to a new way of understanding howSocial Media Ad Metrics Definitions Released May 2009 #12;Social Media Metrics Definitions 2008 & Social Media Committee. About the IAB's User-Generated Content & Social Media Committee: The User

  7. GRAPH THEORY STUDY GUIDE 1. Definitions

    E-Print Network [OSTI]

    Cooper, Joshua N.

    GRAPH THEORY STUDY GUIDE 1. Definitions Definition 1 (Partition of A). A set A = A1, ..., Ak. Definition 2 (Vertex set). The set of vertices in a graph denoted by V (G). Definition 3 (Edge set). The set of edges in a graph denoted by E(G). Definition 4 (Order). the number of vertices of a graph G written |G

  8. Low-Income Weatherization: The Human Dimension

    Broader source: Energy.gov [DOE]

    This presentation focuses on how the human dimension saves energy within low-income weatherization programs.

  9. On the Definition of Gauge Field Operators in Lattice Gauge-Fixed Theories

    E-Print Network [OSTI]

    L. Giusti; M. L. Paciello; S. Petrarca; B. Taglienti; M. Testa

    1998-09-09T23:59:59.000Z

    We address the problem of defining the gluon field on the lattice in terms of the natural link variables. Different regularized definitions are shown, through non perturbative numerical computation, to converge towards the same continuum renormalized limit.

  10. On the Definition of Gauge Field Operators in Lattice Gauge-Fixed Theories

    E-Print Network [OSTI]

    L. Giusti; M. L. Paciello; S. Petrarca; B. Taglienti; M. Testa

    1998-03-26T23:59:59.000Z

    We address the problem of defining the gauge four-potential on the lattice, in terms of the natural link variables. Different regularized definitions are shown, through non perturbative numerical computation, to converge towards the same continuum renormalized limit.

  11. Improved Bounds on Universal Extra Dimensions

    E-Print Network [OSTI]

    Thomas Flacke

    2006-05-13T23:59:59.000Z

    We report on recent constraints on models with a flat ``universal'' extra dimension in which all Standard Model fields propagate in the bulk. A significantly improved constraint on the compactification scale is obtained from the extended set of electroweak precision observables accurately measured at LEP1 and LEP2. We find a lower bound of 1/R > 700 (800) GeV at the 99% (95%) confidence level. Comparison of this constraint with the relic density of Kaluza-Klein dark matter for the Minimal UED model points towards the necessity of including non-minimal boundary terms which motivates studying alternative Kaluza-Klein dark matter candidates. Results for the one-loop induced magnetic dipole moment for Kaluza-Klein neutrino dark matter are presented. This talk is based on Phys.Rev.D73:095002,2006 and hep-ph/0601161.

  12. Constraints on extra dimensions from precision molecular spectroscopy

    E-Print Network [OSTI]

    Salumbides, E J; Gato-Rivera, B; Ubachs, W

    2015-01-01T23:59:59.000Z

    Accurate investigations of quantum level energies in molecular systems are shown to provide a test ground to constrain the size of compactified extra dimensions. This is made possible by the recent progress in precision metrology with ultrastable lasers on energy levels in neutral molecular hydrogen (H$_2$, HD and D$_2$) and the molecular hydrogen ions (H$_2^+$, HD$^+$ and D$_2^+$). Comparisons between experiment and quantum electrodynamics calculations for these molecular systems can be interpreted in terms of probing large extra dimensions, under which conditions gravity will become much stronger. Molecules are a probe of space-time geometry at typical distances where chemical bonds are effective, i.e. at length scales of an \\AA. Constraints on compactification radii for extra dimensions are derived within the Arkani-Hamed-Dimopoulos-Dvali framework, while constraints for curvature or brane separation are derived within the Randall-Sundrum framework. Based on the molecular spectroscopy of D$_2$ molecules an...

  13. Deconstructing unparticles in higher dimensions

    SciTech Connect (OSTI)

    Lee, Jong-Phil [Korea Institute for Advanced Study, Seoul 130-722 (Korea, Republic of)

    2009-04-01T23:59:59.000Z

    Unparticles are realized by deconstruction in higher extra dimensions. It is shown that in this framework when the scale invariance is broken, the corresponding spectral function of the unparticle is shifted by an amount of the breaking scale. The result strongly supports the conventional ansatz for the spectral function of the unparticle in the literature.

  14. crystal nickel a hree dimension

    E-Print Network [OSTI]

    Braun, Paul

    Zhenting 1 Department 2 Departmen ABSTRACT This pape crystal nickel a hree dimension photonic cryst polystyrene op silicon chips, volume fraction can be controlle nickel structure hen sacrificed volume fraction reports microm crystal structur or alumina she nickel microca microstructure further electrop volume

  15. Resource dimensioning through buffer sampling

    E-Print Network [OSTI]

    Boucherie, Richard J.

    , theoretical dimensioning formulae that estimate the required capacity C as a function of the input traffic the buffer content, estimates the buffer content distribution, and `inverts' this to the variance. We of capacity that should be added, advanced modeling and performance techniques are required. These predictions

  16. Higher dimensions Max flow min cut in higher dimensions

    E-Print Network [OSTI]

    Duval, Art

    -negative number, and direction) to each edge such that: net flow at each vertex, except S and T, is zero; and |xe, and direction) to each edge such that: net flow at each vertex is zero; and |xe| e. Value of flow is x0. Duval: net flow at each vertex is zero; and |xe| e. Value of flow is x0. Definition Cut is minimal set

  17. Review of sour service definitions

    SciTech Connect (OSTI)

    McIntyre, D.R.; Boah, J.K. [Saudi Aramco, Dhahran (Saudi Arabia)

    1996-08-01T23:59:59.000Z

    Case histories and laboratory test data are presented to compare the predictive utility of NACE MR0175 with three alternatives. With some exceptions, the MR0175 definition is useful and conservative for most cases. The definition based on water phase pH and hydrogen sulfide (H{sub 2}S) partial pressure, proposed in European Federation of Corrosion (EFC) pub. 16, is not recommended since it does not predict sulfide stress cracking (SSC) in refining environments and presents higher risk of SSC of sweet service materials in certain Arabian Gulf production environments. A modified definition of sour service is proposed, which uses the MR0175 definition except in cases of very low water phase pH. 47 refs., 4 figs., 1 tab.

  18. Dark Energy From Fifth Dimension

    E-Print Network [OSTI]

    H. Alavirad; N. Riazi

    2008-01-21T23:59:59.000Z

    Observational evidence for the existence of dark energy is strong. Here we suggest a model which is based on a modified gravitational theory in 5D and interpret the 5th dimension as a manifestation of dark energy in the 4D observable universe. We also obtain an equation of state parameter which varies with time. Finally, we match our model with observations by choosing the free parameters of the model.

  19. Accelerating Universe from Extra Spatial Dimension

    E-Print Network [OSTI]

    S. Chatterjee; A. Banerjee; Y. Z. Zhang

    2005-09-28T23:59:59.000Z

    We present a simple higher dimensional FRW type of model where the acceleration is apparently caused by the presence of the extra dimensions. Assuming an ansatz in the form of the deceleration parameter we get a class of solutions some of which shows the desirable feature of dimensional reduction as well as reasonably good physical properties of matter. Interestingly we do not have to invoke an extraneous scalar field or a cosmological constant to account for this acceleration. One argues that the terms containing the higher dimensional metric coefficients produces an extra negative pressure that apparently drives the inflation of the 4D space with an accelerating phase. It is further found that in line with the physical requirements our model admits of a decelerating phase in the early era along with an accelerating phase at present.Further the models asymptotically mimic a steady state type of universe although it starts from a big type of singularity. Correspondence to Wesson's induced matter theory is also briefly discussed and in line with it it is argued that the terms containing the higher dimensional metric coefficients apparently creates a negative pressure which drives the inflation of the 3-space with an accelerating phase.

  20. Human Dimensions of Wildlife Research Norman Dandy

    E-Print Network [OSTI]

    Human Dimensions of Wildlife Research Norman Dandy Social & Economic Research Group #12;Wildlife) Human-dimensions of species management (HDSM) Research Projects #12;Collaborative Frameworks for Land of woodland landscapes discussion groups, Choice experiments, Fellowships / Placements, Newsletters

  1. (Co)dimension (co)Heyting

    E-Print Network [OSTI]

    Darnière, Luck

    (Co)dimension dans les alg`ebres (co)Heyting Luck Darni`ere, Markus Junker (Co)dimension Compl´etion Pr´ecompacit´e Densit´e et scission Mod`ele compl´etion S´eminaire DDG, Paris 7 (Co)dimension dans les alg`ebres (co)Heyting Luck Darni`ere Markus Junker 10 novembre 2009 #12;(Co)dimension dans les alg

  2. A Simple Linear Time (1 + #)Approximation Algorithm for kMeans Clustering in Any Dimensions

    E-Print Network [OSTI]

    Kumar, Amit

    A Simple Linear Time (1 + #)­Approximation Algorithm for k­Means Clustering in Any Dimensions Amit@cse.iitd.ernet.in Abstract We present the first linear time (1+#)­approximation al­ gorithm for the k­means problem for fixed of the most popular definitions of cluster­ ing is the k­means clustering problem. Given a set of points P

  3. DEPARTMENT OF HUMAN DIMENSIONS OF NATURAL RESOURCES

    E-Print Network [OSTI]

    CODE DEPARTMENT OF HUMAN DIMENSIONS OF NATURAL RESOURCES College of Natural Resources Colorado;3 DEPARTMENT OF NATURAL HUMAN DIMENSIONS OF NATURAL RESOURCES CODE ARTICLE I. GOAL AND OBJECTIVES A. DEPARTMENT MISSION The mission of the Department of Human Dimensions of Natural Resources is to contribute

  4. Fractal Dimensions of a Weakly Clustered Distribution and the Scale of Homogeneity

    E-Print Network [OSTI]

    J. S. Bagla; Jaswant Yadav; T. R. Seshadri

    2008-08-04T23:59:59.000Z

    Homogeneity and isotropy of the universe at sufficiently large scales is a fundamental premise on which modern cosmology is based. Fractal dimensions of matter distribution is a parameter that can be used to test the hypothesis of homogeneity. In this method, galaxies are used as tracers of the distribution of matter and samples derived from various galaxy redshift surveys have been used to determine the scale of homogeneity in the Universe. Ideally, for homogeneity, the distribution should be a mono-fractal with the fractal dimension equal to the ambient dimension. While this ideal definition is true for infinitely large point sets, this may not be realised as in practice, we have only a finite point set. The correct benchmark for realistic data sets is a homogeneous distribution of a finite number of points and this should be used in place of the mathematically defined fractal dimension for infinite number of points (D) as a requirement for approach towards homogeneity. We derive the expected fractal dimension for a homogeneous distribution of a finite number of points. We show that for sufficiently large data sets the expected fractal dimension approaches D in absence of clustering. It is also important to take the weak, but non-zero amplitude of clustering at very large scales into account. In this paper we also compute the expected fractal dimension for a finite point set that is weakly clustered. Clustering introduces departures in the Fractal dimensions from D and in most situations the departures are small if the amplitude of clustering is small. Features in the two point correlation function, like those introduced by Baryon Acoustic Oscillations (BAO) can lead to non-trivial variations in the Fractal dimensions where the amplitude of clustering and deviations from D are no longer related in a monotonic manner.

  5. A theory of jet definition

    E-Print Network [OSTI]

    Fyodor V. Tkachov

    2000-01-11T23:59:59.000Z

    A systematic framework for jet definition is developed from first principles of physical measurement, quantum field theory, and QCD. A jet definition is found which: is theoretically optimal in regard of both minimization of detector errors and inversion of hadronization; is similar to a cone algorithm with dynamically negotiated jet shapes and positions found via shape observables that generalize the thrust to any number of axes; involves no ad hoc conventions; allows a fast computer implementation [hep-ph/9912415]. The framework offers an array of options for systematic construction of quasi-optimal observables for specific applications.

  6. Conserved Quasilocal Quantities and General Covariant Theories in Two Dimensions

    E-Print Network [OSTI]

    W. Kummer; P. Widerin

    1995-02-15T23:59:59.000Z

    General matterless--theories in 1+1 dimensions include dilaton gravity, Yang--Mills theory as well as non--Einsteinian gravity with dynamical torsion and higher power gravity, and even models of spherically symmetric d = 4 General Relativity. Their recent identification as special cases of 'Poisson--sigma--models' with simple general solution in an arbitrary gauge, allows a comprehensive discussion of the relation between the known absolutely conserved quantities in all those cases and Noether charges, resp. notions of quasilocal 'energy--momentum'. In contrast to Noether like quantities, quasilocal energy definitions require some sort of 'asymptotics' to allow an interpretation as a (gauge--independent) observable. Dilaton gravitation, although a little different in detail, shares this property with the other cases. We also present a simple generalization of the absolute conservation law for the case of interactions with matter of any type.

  7. Statics and Dynamics of Spin and Electric Dipoles in 3-Dimension, 4-Dimension, and Other Dimensions

    E-Print Network [OSTI]

    SASLOW, WM; Fulling, Stephen A.; Hu, Chia-Ren.

    1985-01-01T23:59:59.000Z

    -dimensional spaces where polar vec- tors have n components, spin has n (n ?1)/2 components. Moreover, although a rotation can make an arbitrary polar vector have only one noniero component, the same is not true for spin (and mag- netic field). In particular, for n... com- ponent we have derived the equation of motion for spin in n dimensions, and for n =4 we apply it to free Larmor precession, where we find two modes [at y(H~2+H34)]. Simple ferromagnets and spin glasses are also discussed for n=4. Since no true...

  8. Guiding center plasma models in three dimensions

    SciTech Connect (OSTI)

    Sugiyama, Linda E. [Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)

    2008-09-15T23:59:59.000Z

    Guiding center plasma models describe the fast charged particle gyration around magnetic field lines by an angle coordinate, defined relative to local orthogonal coordinate axes (e{sub 1},e{sub 2},b=B/B) at each guiding center location. In three dimensions (3D), unlike uniform straight two-dimensional (2D) fields, geometrical effects make the small gyroradius expansion nonuniform in velocity phase space in first order O({rho}{sub i}/L). At second order, Hamiltonian and Lagrangian solutions may be undefined even when good magnetic flux surfaces exist; existence requires the magnetic field torsion {tau}=b{center_dot}{nabla}xb=0 and {tau}{sub g}{identical_to}b{center_dot}({nabla}e{sub 1}){center_dot}e{sub 2}=0, unless the magnetic field has a 2D symmetry, such as toroidal axisymmetry. Keeping complete 3D geometrical effects also requires the magnetic vector potential term to appear in the electric field at the same order as the electrostatic potential. These problems express properties of magnetic vector potentials, Lagrangians, and the curvature of manifolds, and have analogies to attempts to connect small scale Lagrangian theories to higher dimensional, large scale ones in the grand unification theories of physics.

  9. Entropy and Energy: Toward a Definition of Physical Sustainability

    E-Print Network [OSTI]

    Hermanowicz, Slawomir W

    2005-01-01T23:59:59.000Z

    usefulness of entropy-energy definition of sustainability asEntropy and Energy: Toward a Definition of Physicaland energy should be included in the desired definition of

  10. A Natural Definition of Random Language Keith Wansbrough*

    E-Print Network [OSTI]

    Wansbrough, Keith

    Introduction Algorithmic Information Theory (AIT) provides definitions of randomness for strings A Natural Definition of Random Language Keith Wansbrough* October 13, 1995 Abstract We propose a natural definition

  11. Magnetic and Electric Black Holes in Arbitrary Dimension

    E-Print Network [OSTI]

    Adil Belhaj; Pablo Diaz; Antonio segui

    2009-06-02T23:59:59.000Z

    In this work, we compare two different objects: electric black holes and magnetic black holes in arbitrary dimension. The comparison is made in terms of the corresponding moduli space and their extremal geometries. We treat parallelly the magnetic and the electric cases. Specifically, we discuss the gravitational solution of these spherically symmetric objects in the presence of a positive cosmological constant. Then, we find the bounded region of the moduli space allowing the existence of black holes. After identifying it in both the electric and the magnetic case, we calculate the geometry that comes out between the horizons at the coalescence points. Although the electric and magnetic cases are both very different (only dual in four dimensions), gravity solutions seem to clear up most of the differences and lead to very similar geometries.

  12. Global symmetries of Yang-Mills squared in various dimensions

    E-Print Network [OSTI]

    Anastasiou, A; Hughes, M J; Nagy, S

    2015-01-01T23:59:59.000Z

    Tensoring two on-shell super Yang-Mills multiplets in dimensions $D\\leq 10$ yields an on-shell supergravity multiplet, possibly with additional matter multiplets. Associating a (direct sum of) division algebra(s) $\\mathbb{D}$ with each dimension $3\\leq D\\leq 10$ we obtain formulae for the algebras $\\mathfrak{g}$ and $\\mathfrak{h}$ of the U-duality group $G$ and its maximal compact subgroup $H$, respectively, in terms of the internal global symmetry algebras of each super Yang-Mills theory. We extend our analysis to include supergravities coupled to an arbitrary number of matter multiplets by allowing for non-supersymmetric multiplets in the tensor product.

  13. The Deng algorithm in higher dimensions

    E-Print Network [OSTI]

    Y. Nyonyi; S. D. Maharaj; K. S. Govinder

    2014-12-28T23:59:59.000Z

    We extend an algorithm of Deng in spherically symmetric spacetimes to higher dimensions. We show that it is possible to integrate the generalised condition of pressure isotropy and generate exact solutions to the Einstein field equations for a shear-free cosmological model with heat flow in higher dimensions. Three new metrics are identified which contain results of four dimensions as special cases. We show graphically that the matter variables are well behaved and the speed of sound is causal.

  14. Optical Tomography in two dimensions

    E-Print Network [OSTI]

    One of them is to require that k is small enough in a certain sense, for example, ..... (27). We want to prove an estimate similar to (21) on the last term in the r.h.s. above. ... where, in our case, s will be the norm in the Sobolev space Hs(X).

  15. Definitions

    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 3,625govInstrumentstdmadapInactiveVisitingContract Management FermiDavid Turner David3 |A Sign In About | Careers |

  16. Definitions

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

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

  17. String Universality in Six Dimensions

    E-Print Network [OSTI]

    Vijay Kumar; Washington Taylor

    2009-10-10T23:59:59.000Z

    In six dimensions, cancellation of gauge, gravitational, and mixed anomalies strongly constrains the set of quantum field theories which can be coupled consistently to gravity. We show that for some classes of six-dimensional supersymmetric gauge theories coupled to gravity, the anomaly cancellation conditions are equivalent to tadpole cancellation and other constraints on the matter content of heterotic/type I compactifications on K3. In these cases, all consistent 6D supergravity theories have a realization in string theory. We find one example which may arise from a novel string compactification, and we identify a new infinite family of models satisfying anomaly factorization. We find, however, that this infinite family of models, as well as other infinite families of models previously identified by Schwarz are pathological. We suggest that it may be feasible to demonstrate that there is a string theoretic realization of all consistent six-dimensional supergravity theories which have Lagrangian descriptions with arbitrary gauge and matter content. We attempt to frame this hypothesis of string universality as a concrete conjecture.

  18. Constructive Dimension and Turing Degrees Laurent Bienvenu #

    E-Print Network [OSTI]

    Stephan, Frank

    S with constructive Hausdor# dimension dimH (S) and constructive packing dimension dimP (S) is Turing equivalent to a sequence R with dimH (R) # (dim H (S)/dim P (S)) - #, for arbitrary # > 0. Furthermore, if dimP (S) > 0, then dimP (R) # 1 - #. The reduction thus serves as a randomness extractor that increases the algorithmic

  19. Combinatorial Dimension in Fractional Cartesian Products

    E-Print Network [OSTI]

    Gao, Frank

    Combinatorial Dimension in Fractional Cartesian Products Ron Blei,1 Fuchang Gao2 1 Department of Mathematics, University of Connecticut, Storrs, Connecticut 06268; e-mail: blei@math.uconn.edu 2 Department? Correspondence to: R. Blei 2004 Wiley Periodicals, Inc. 146 #12;COMBINATORIAL DIMENSION IN FRACTIONAL CARTESIAN

  20. Deconstructing Dimensions Adventures in Theory Space

    SciTech Connect (OSTI)

    Nima Arkani-Hamed

    2009-11-28T23:59:59.000Z

    Theories of gravity and gauge forces in more than four dimensions offer a new paradigm for physics beyond the standard model. We present some of the most interesting recent ideas, and explain how signals for extra dimensions could appear in experiments at a linear e+e- collider.

  1. Nuclear War. The moral dimension

    SciTech Connect (OSTI)

    Child, J.W.

    1985-01-01T23:59:59.000Z

    U.S. nuclear policy has become the target of increasing criticism during the past decade. Critics often argue that the use of nuclear weapons would be irrational, would destroy humankind, and thus could not serve any rational policy goal. Other critics point to the immortality of the use of nuclear weapons. Both groups condemn U.S. military policy. In Nuclear War, James Child considers and rejects both these lines of criticism. He argues that a policy of deterrence can be both rational and moral; that U.S. nuclear policy is, on balance, based on rational and moral foundations. Child examines near-term consequences of a nuclear war and finds them ghastly but not unthinkable or incomparable to the havoc produced by previous wars. He also analyzes long-term consequences, such as those proposed by the ''nuclear winter'' theory, and finds the fear of total annihilation of humankind to be unfounded.

  2. Two studies of topological quantum field theory in two dimensions

    E-Print Network [OSTI]

    Lin, Haijian Kevin

    2012-01-01T23:59:59.000Z

    56] G. Segal. The definition of conformal field theory. In:ABELIAN GAUGE THEORY IN FAMILIES Definition 2.4.1. Let 0 ? wOF ABELIAN GAUGE THEORY IN FAMILIES Definition 2.2.6. Recall

  3. 13 Lyapunov stability Definition 13.1 (Positive definite). We say that V (x, y) is positive definite, if V (x, y) 0

    E-Print Network [OSTI]

    Karageorgis, Paschalis

    13 Lyapunov stability Definition 13.1 (Positive definite). We say that V (x, y) is positive definite, if V (x, y) 0 at all points and if equality holds only at the origin. Definition 13.2 (Lyapunov functions). Suppose that V (x, y) is continuous and positive definite. Then we say that V is a Lyapunov

  4. Massive "spin-2" theories in arbitrary $D \\ge 3$ dimensions

    E-Print Network [OSTI]

    D. Dalmazi; A. L. R. dos Santos; E. L. Mendona

    2014-08-28T23:59:59.000Z

    Here we show that in arbitrary dimensions $D\\ge 3$ there are two families of second order Lagrangians describing massive "spin-2" particles via a nonsymmetric rank-2 tensor. They differ from the usual Fierz-Pauli theory in general. At zero mass one of the families is Weyl invariant. Such massless theory has no particle content in $D=3$ and gives rise, via master action, to a dual higher order (in derivatives) description of massive spin-2 particles in $D=3$ where both the second and the fourth order terms are Weyl invariant, contrary to the linearized New Massive Gravity. However, only the fourth order term is invariant under arbitrary antisymmetric shifts. Consequently, the antisymmetric part of the tensor $e_{[\\mu\

  5. Boundary definition of a multiverse measure

    E-Print Network [OSTI]

    Raphael Bousso; Ben Freivogel; Stefan Leichenauer; Vladimir Rosenhaus

    2010-09-18T23:59:59.000Z

    We propose to regulate the infinities of eternal inflation by relating a late time cut-off in the bulk to a short distance cut-off on the future boundary. The light-cone time of an event is defined in terms of the volume of its future light-cone on the boundary. We seek an intrinsic definition of boundary volumes that makes no reference to bulk structures. This requires taming the fractal geometry of the future boundary, and lifting the ambiguity of the conformal factor. We propose to work in the conformal frame in which the boundary Ricci scalar is constant. We explore this proposal in the FRW approximation for bubble universes. Remarkably, we find that the future boundary becomes a round three-sphere, with smooth metric on all scales. Our cut-off yields the same relative probabilities as a previous proposal that defined boundary volumes by projection into the bulk along timelike geodesics. Moreover, it is equivalent to an ensemble of causal patches defined without reference to bulk geodesics. It thus yields a holographically motivated and phenomenologically successful measure for eternal inflation.

  6. Glossary of CERCLA, RCRA and TSCA related terms and acronyms. Environmental Guidance

    SciTech Connect (OSTI)

    Not Available

    1993-10-01T23:59:59.000Z

    This glossary contains CERCLA, RCRA and TSCA related terms that are most often encountered in the US Department of Energy (DOE) Environmental Restoration and Emergency Preparedness activities. Detailed definitions are included for key terms. The CERCLA definitions included in this glossary are taken from the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), as amended and related federal rulemakings. The RCRA definitions included in this glossary are taken from the Resource Conservation and Recovery Act (RCRA) and related federal rulemakings. The TSCA definitions included in this glossary are taken from the Toxic Substances and Control Act (TSCA) and related federal rulemakings. Definitions related to TSCA are limited to those sections in the statute and regulations concerning PCBs and asbestos.Other sources for definitions include additional federal rulemakings, assorted guidance documents prepared by the US Environmental Protection Agency (EPA), guidance and informational documents prepared by the US Department of Energy (DOE), and DOE Orders. The source of each term is noted beside the term. Terms presented in this document reflect revised and new definitions published before July 1, 1993.

  7. Satellite power system concept development and evaluation program system definition technical assessment report

    SciTech Connect (OSTI)

    Not Available

    1980-12-01T23:59:59.000Z

    The results of the system definition studies conducted by NASA as a part of the Department of Energy/National Aeronautics and Space Administration SPS Concept Development and Evaluation Program are summarized. The purpose of the system definition efforts was to identify and define candidate SPS concepts and to evaluate the concepts in terms of technical and cost factors. Although the system definition efforts consisted primarily of evaluation and assessment of alternative technical approaches, a reference system was also defined to facilitate economic, environmental, and societal assessments by the Department of Energy. This reference system was designed to deliver 5 GW of electrical power to the utility grid. Topics covered include system definition; energy conversion and power management; power transmission and reception; structures, controls, and materials; construction and operations; and space transportation.

  8. Solar energy generation in three dimensions

    E-Print Network [OSTI]

    Bernardi, Marco

    We formulate, solve computationally and study experimentally the problem of collecting solar energy in three dimensions. We demonstrate that absorbers and reflectors can be combined in the absence of sun tracking to build ...

  9. Dark Energy, Inflation and Extra Dimensions

    E-Print Network [OSTI]

    Paul J. Steinhardt; Daniel Wesley

    2008-12-07T23:59:59.000Z

    We consider how accelerated expansion, whether due to inflation or dark energy, imposes strong constraints on fundamental theories obtained by compactification from higher dimensions. For theories that obey the null energy condition (NEC), we find that inflationary cosmology is impossible for a wide range of compactifications; and a dark energy phase consistent with observations is only possible if both Newton's gravitational constant and the dark energy equation-of-state vary with time. If the theory violates the NEC, inflation and dark energy are only possible if the NEC-violating elements are inhomogeneously distributed in thecompact dimensions and vary with time in precise synchrony with the matter and energy density in the non-compact dimensions. Although our proofs are derived assuming general relativity applies in both four and higher dimensions and certain forms of metrics, we argue that similar constraints must apply for more general compactifications.

  10. On c-theorems in arbitrary dimensions

    E-Print Network [OSTI]

    Arpan Bhattacharyya; Ling-Yan Hung; Kallol Sen; Aninda Sinha

    2012-11-20T23:59:59.000Z

    The dilaton action in 3+1 dimensions plays a crucial role in the proof of the a-theorem. This action arises using Wess-Zumino consistency conditions and crucially relies on the existence of the trace anomaly. Since there are no anomalies in odd dimensions, it is interesting to ask how such an action could arise otherwise. Motivated by this we use the AdS/CFT correspondence to examine both even and odd dimensional CFTs. We find that in even dimensions, by promoting the cut-off to a field, one can get an action for this field which coincides with the WZ action in flat space. In three dimensions, we observe that by finding an exact Hamilton-Jacobi counterterm, one can find a non-polynomial action which is invariant under global Weyl rescalings. We comment on how this finding is tied up with the F-theorem conjectures.

  11. Secrecy coverage in two dimensions Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Secrecy coverage in two dimensions Amites Sarkar Department of Mathematics Western Washington University Bellingham, WA 98225, USA Email: amites.sarkar@wwu.edu Abstract--Imagine a sensor network

  12. Secrecy coverage in two dimensions Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Secrecy coverage in two dimensions Amites Sarkar November 15, 2014 Abstract Working in the infinite, Bellingham, WA 98225, USA. Email: amites.sarkar@wwu.edu 1 #12;Svante Janson proved in 1986 [7] that coverage

  13. Secrecy coverage in two dimensions Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Secrecy coverage in two dimensions Amites Sarkar October 29, 2013 Abstract Working in the infinite, Western Washington University, Bellingham, WA 98225, USA. Email: amites.sarkar@wwu.edu 1 #12;Svante Janson

  14. Constructive Dimension and Turing Degrees Laurent Bienvenu

    E-Print Network [OSTI]

    Doty, David

    sequence S with constructive Hausdorff dimension dimH(S) and constructive packing dimension dimP(S, if dimP(S) > 0, then dimP(R) 1 - . The reduction thus serves as a randomness extractor that increases sequence S (that is, dimH(S) = dimP(S)) such that dimH(S) > 0, the Turing degree of S has constructive

  15. Breaking Parity Symmetry Using Extra Dimensions

    E-Print Network [OSTI]

    R. N. Mohapatra; A. Prez-Lorenzana

    1999-11-17T23:59:59.000Z

    We present a new way to break parity symmetry in left-right symmetric models using boundary conditions on the fields residing in the fifth dimension. We also discuss the connection between the limits on the size of extra dimensions and the scale of right handed symmetry breaking obtained from the analysis of neutrinoless double beta decay in the case where the righthanded gauge symmetry is in the bulk.

  16. Definition RX Evaluate Kernels K-2d K-1d Change By definition undefined

    E-Print Network [OSTI]

    Theiler, James

    Definition RX Evaluate Kernels K-2d K-1d Change By definition undefined Adventures in anomaly Alamos National Laboratory Research supported by the United States Department of Energy through the Los Alamos Laboratory Directed Research and Development (LDRD) Program. #12;Theiler LA-UR-14-24429 Definition

  17. Large-dimension, high-ZT Thermoelectric Nanocomposites for High...

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

    Large-dimension, high-ZT Thermoelectric Nanocomposites for High-Power High-efficiency Waste Heat Recovery for Electricity Generation Large-dimension, high-ZT Thermoelectric...

  18. White Paper Societal Dimensions of Earth System Modeling

    E-Print Network [OSTI]

    on Societal Dimensions of Earth System Modeling July 5, 2011 #12; 2 Executive Summary A Societal Dimensions of Earth System Modeling workshop was held

  19. A Natural Definition of Random Language Keith Wansbrough \\Lambda

    E-Print Network [OSTI]

    Wansbrough, Keith

    definition. 1 Introduction Algorithmic Information Theory (AIT) provides definitions of randomnessA Natural Definition of Random Language Keith Wansbrough \\Lambda October 13, 1995 Abstract We propose a natural definition of random language, based on the standard AIT definitions of random string

  20. Investigation of anisotropic metric in multidimensional space-time and generation of additional dimensions by scalar field

    E-Print Network [OSTI]

    Sergey V. Yakovlev

    2011-12-21T23:59:59.000Z

    Were investigated anisotropic metric of higher dimensional space-time with only cosmological term and scalar field. Showed, that presence of scalar field is equivalent to anisotropic metric in the multy dimensional space-time and proposed idea of dimensions generation by scalar field. Were solved Einstein's equations for higher dimensional space-time of Kazner's type and derived expressions for density of energy for scalar field, which generate additional dimensions, and proposed the procedure of renormalization of the metric.

  1. Holographic fractional topological insulators in 2+1 and 1+1 dimensions

    E-Print Network [OSTI]

    Andreas Karch; Joseph Maciejko; Tadashi Takayanagi

    2010-11-09T23:59:59.000Z

    We give field theory descriptions of the time-reversal invariant quantum spin Hall insulator in 2+1 dimensions and the particle-hole symmetric insulator in 1+1 dimensions in terms of massive Dirac fermions. Integrating out the massive fermions we obtain a low-energy description in terms of a topological field theory, which is entirely determined by anomaly considerations. This description allows us to easily construct low-energy effective actions for the corresponding `fractional' topological insulators, potentially corresponding to new states of matter. We give a holographic realization of these fractional states in terms of a probe brane system, verifying that the expected topologically protected transport properties are robust even at strong coupling.

  2. Fractal Dimension Computation From Equal Mass Partitions

    E-Print Network [OSTI]

    Shiozawa, Yui; Rouet, Jean-Louis

    2015-01-01T23:59:59.000Z

    While the numerical methods which utilizes partitions of equal-size, including the box-counting method, remain the most popular choice for computing the generalized dimension of multifractal sets, two mass- oriented methods are investigated by applying them to the one-dimensional generalized Cantor set. We show that both mass-oriented methods generate relatively good results for generalized dimensions for important cases where the box-counting method is known to fail. Both the strengths and limitations of the methods are also discussed.

  3. Radiation in (2+1)-dimensions

    E-Print Network [OSTI]

    Mauricio Cataldo; Alberto A. Garca

    2014-05-15T23:59:59.000Z

    In this paper we discuss the radiation equation of state $p=\\rho/2$ in (2+1)-dimensions. In (3+1)-dimensions the equation of state $p=\\rho/3$ may be used to describe either actual electromagnetic radiation (photons) as well as a gas of massless particles in a thermodynamic equilibrium (for example neutrinos). In this work it is shown that in the framework of (2+1)-dimensional Maxwell electrodynamics the radiation law $p=\\rho/2$ takes place only for plane waves, i.e. for $E = B$. Instead of the linear Maxwell electrodynamics, to derive the (2+1)-radiation law for more general cases with $E \

  4. Pushing the Frontier of High-Definition Ion Mobility Spectrometry...

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

    the Frontier of High-Definition Ion Mobility Spectrometry Using FAIMS. Pushing the Frontier of High-Definition Ion Mobility Spectrometry Using FAIMS. Abstract: Differential ion...

  5. BLOCK DIAGONALLY DOMINANT POSITIVE DEFINITE APPROXIMATE FILTERS AND SMOOTHERS

    E-Print Network [OSTI]

    BLOCK DIAGONALLY DOMINANT POSITIVE DEFINITE APPROXIMATE FILTERS AND SMOOTHERS Running title: BLOCK the loss of positive definiteness in the approximate equations. Therefore previous analyses have

  6. Entropy and Energy: Toward a Definition of Physical Sustainability

    E-Print Network [OSTI]

    Hermanowicz, Slawomir W

    2005-01-01T23:59:59.000Z

    of entropy-energy definition of sustainability as well asand Energy: Toward a Definition of Physical Sustainabilityto assess the sustainability is based on the energy. This

  7. Mathematical definition of quantum field theory on a manifold

    E-Print Network [OSTI]

    A. V. Stoyanovsky

    2009-11-21T23:59:59.000Z

    We give a mathematical definition of quantum field theory on a manifold, and definition of quantization of a classical field theory given by a variational principle.

  8. Order in Dezert Smarandache Theory; definition of continuous Dezert Smarandache models

    E-Print Network [OSTI]

    Frederic Dambreville

    2006-08-04T23:59:59.000Z

    When implementing the DSmT, a difficulty may arise from the possible huge dimension of hyperpower sets, which are indeed free structures. However, it is possible to reduce the dimension of these structures by involving logical constraints. In this chapter, the logical constraints will be related to a predefined order over the logical propositions. The use of such orders and their resulting logical constraints will ensure a great reduction of the model complexity. Such results will be applied to the definition of continuous DSm models. In particular, a simplified description of the continuous impreciseness is considered, based on impreciseness intervals of the sensors. From this viewpoint, it is possible to manage the contradictions between continuous sensors in a DSmT manner, while the complexity of the model stays handlable.

  9. Our definition of sustainability reflects what the UN and the World Wildlife Fund suggest as the process of improving the quality of human life while living within the carrying capacity of supporting eco-systems. We use the definition where human, societa

    E-Print Network [OSTI]

    Arslan, Hüseyin

    Our definition of sustainability reflects what the UN and the World Wildlife Fund suggest as the process of improving the quality of human life while living within the carrying capacity of supporting eco are fundamentally integrated dimensions that are mutually reinforcing. The new School of Global Sustainability

  10. The communication dimension of wind energy

    E-Print Network [OSTI]

    McCalley, James D.

    The communication dimension of wind energy: Challenges and opportunities #12;OPPORTUNITIES #12;Pew;1. Emergent anti-wind energy advocacy groups #12;2. A multi-faceted technical issue that is difficult to explain Wind energy Policy Science Engineering Ethics Public relations Others #12;3. Different audience

  11. Similarity Dimension of a Glaciated Terrain

    E-Print Network [OSTI]

    Jackson, Daniel R.

    rate of movement. #12;Data Acquisition The topography of a formerly glaciated surface the proportionality constant b from the previous equation. #12;Application to Topography The topography of a region, it becomes possible to evaluate the length and similarity dimension of topography as Richardson

  12. Large-N droplets in two dimensions

    E-Print Network [OSTI]

    Dean Lee

    2006-05-15T23:59:59.000Z

    Using lattice effective field theory, we study the ground state binding energy of N distinct particles in two dimensions with equal mass interacting weakly via an attractive SU(N)-symmetric short range potential. We find that in the limit of zero range and large N, the ratio of binding energies B_{N}/B_{N-1} approaches the value 8.3(6).

  13. Cosmological model with movement in fifth dimension

    E-Print Network [OSTI]

    W. B. Belayev

    2001-10-24T23:59:59.000Z

    Presented cosmological model is 3D brane world sheet moved in extra dimension with variable scale factor. Analysis of the geodesic motion of the test particle gives settle explanation of the Pioneer effect. It is found that for considered metric the solution of the semi-classical Einstein equations with various parameters conforms to isotropic expanded and anisotropic stationary universe.

  14. The Environmental Justice Dimensions of Climate Change

    E-Print Network [OSTI]

    The Environmental Justice Dimensions of Climate Change Marie Lynn Miranda, Douglas A. Hastings to mitigate the severe impacts of climate change predicted to occur in the twenty-first century. Many with climate change. This study investigates the varying degrees to which developing and developed nations

  15. DIMENSIONS of DISCOVERY Sponsored Program Awards

    E-Print Network [OSTI]

    Ginzel, Matthew

    DIMENSIONS of DISCOVERY Sponsored Program Awards May 2013 Office of the Vice President for ResearchFunds." Abu-Omar, Mahdi M; chemistry, from U.S. DepartmentofEnergy,$165,000,"OxoCata- lysts for the Conversion pathobiology, from PHS-NIH National Institute of Child Health and Human Development, $2,963, "Animal-Assisted

  16. Definition of a 'Zero Net Energy' Community

    SciTech Connect (OSTI)

    Carlisle, N.; Van Geet, O.; Pless, S.

    2009-11-01T23:59:59.000Z

    This document provides a definition for a net zero-energy community. A community that offsets all of its energy use from renewables available within the community's built environment.

  17. Department of Bioengineering Definition of Biomedical Engineering

    E-Print Network [OSTI]

    is a discipline that advances knowledge in engineering, biology and medicine, and improves human health throughDepartment of Bioengineering Definition of Biomedical Engineering Biomedical engineering cross-disciplinary activities that integrate the engineering sciences with the biomedical sciences

  18. Quantal Definition of the Weak Equivalence Principle

    E-Print Network [OSTI]

    Abel Camacho; Arturo Camacho-Guardian

    2008-11-03T23:59:59.000Z

    The present work analyzes the meaning of the Weak Equivalence Principle in the context of quantum mechanics. A quantal definition for this principle is introduced. This definition does not require the concept of trajectory and relies upon the phase shift induced by a gravitational field in the context of a quantum interference experiment of two coherent beams of particles. In other words, it resorts to wave properties of the system and not to classical concepts as the idea of trajectory.

  19. Constraints on Automorphic Forms of Higher Derivative Terms from Compactification

    E-Print Network [OSTI]

    Finn Gubay; Neil Lambert; Peter West

    2010-08-04T23:59:59.000Z

    By dimensionally reducing the higher derivative corrections of ten-dimensional IIB theory on a torus we deduce constraints on the E_{n+1} automorphic forms that occur in d=10-n dimensions. In particular we argue that these automorphic forms involve the representation of E_{n+1} with fundamental weight \\lambda^{n+1}, which is also the representation to which the string charges in d dimensions belong. We also consider a similar calculation for the reduction of higher derivative terms in eleven-dimensional M-theory.

  20. Rigorous and General Definition of Thermodynamic Entropy

    E-Print Network [OSTI]

    Gian Paolo Beretta; Enzo Zanchini

    2010-10-05T23:59:59.000Z

    The physical foundations of a variety of emerging technologies --- ranging from the applications of quantum entanglement in quantum information to the applications of nonequilibrium bulk and interface phenomena in microfluidics, biology, materials science, energy engineering, etc. --- require understanding thermodynamic entropy beyond the equilibrium realm of its traditional definition. This paper presents a rigorous logical scheme that provides a generalized definition of entropy free of the usual unnecessary assumptions which constrain the theory to the equilibrium domain. The scheme is based on carefully worded operative definitions for all the fundamental concepts employed, including those of system, property, state, isolated system, environment, process, separable system, system uncorrelated from its environment, and parameters of a system. The treatment considers also systems with movable internal walls and/or semipermeable walls, with chemical reactions and/or external force fields, and with small numbers of particles. The definition of reversible process is revised by introducing the new concept of scenario. The definition of entropy involves neither the concept of heat nor that of quasistatic process; it applies to both equilibrium and nonequilibrium states. The role of correlations on the domain of definition and on the additivity of energy and entropy is discussed: it is proved that energy is defined and additive for all separable systems, while entropy is defined and additive only for separable systems uncorrelated from their environment; decorrelation entropy is defined. The definitions of energy and entropy are extended rigorously to open systems. Finally, to complete the discussion, the existence of the fundamental relation for stable equilibrium states is proved, in our context, for both closed and open systems.

  1. On Thermodynamics of AdS Black Holes in Arbitrary Dimensions

    E-Print Network [OSTI]

    A. Belhaj; M. Chabab; H. El Moumni; M. B. Sedra

    2012-09-23T23:59:59.000Z

    Considering the cosmological constant $\\Lambda$ as a thermodynamic pressure and its conjugate quantity as a thermodynamic volume as proposed in Kubiznak and Mann (2012), we discuss the critical behavior of charged AdS black hole in arbitrary dimensions $d$. In particular, we present a comparative study in terms of the spacetime dimension $d$ and the displacement of critical points controlling the transition between the small and the large black holes. Such behaviors vary nicely in terms of $d$. Among our result in this context consists in showing that the equation of state for a charged RN-AdS black hole predicts an universal number given by $\\frac{2d-5}{4d-8}$. The three dimensional solution is also discussed.

  2. Codes and Supersymmetry in One Dimension

    E-Print Network [OSTI]

    C. F. Doran; M. G. Faux; S. J. Gates Jr.; T. Hbsch; K. M. Iga; G. D. Landweber; R. L. Miller

    2011-08-20T23:59:59.000Z

    Adinkras are diagrams that describe many useful supermultiplets in D=1 dimensions. We show that the topology of the Adinkra is uniquely determined by a doubly even code. Conversely, every doubly even code produces a possible topology of an Adinkra. A computation of doubly even codes results in an enumeration of these Adinkra topologies up to N=28, and for minimal supermultiplets, up to N=32.

  3. Effective Fractal Dimension in Computational Complexity and

    E-Print Network [OSTI]

    have: ­ computable by a finite automata dimFS ­ computable in polynomial time dimp ­ computable? E= DTIME(2n) DENSE= { L | n |Ln|>2n } dimp(E)=1 #12;Density of hard sets The p-dimension of sets-Hitchcock 2011] #12;Density of hard sets 1. Abundance result (dimp(E)=1) Most sets in E do not reduce to nondense

  4. PACKING DIMENSIONS, TRANSVERSAL MAPPINGS AND GEODESIC FLOWS

    E-Print Network [OSTI]

    Jyväskylä, University of

    result for the packing dimension, dimp, of projected measures. They showed that if µ is a finite Borel measure on Rn , then (1.1) dimp PV µ = dimm µ for almost all V G(n, m), where dimm µ is a packing is the same for almost all projections, but it may happen that dimm µ dimp µ. The above results are "almost

  5. Dimensional reduction without continuous extra dimensions

    SciTech Connect (OSTI)

    Chamseddine, Ali H. [American University of Beirut, Physics Department, Beirut, Lebanon and I.H.E.S. F-91440 Bures-sur-Yvette (France)] [American University of Beirut, Physics Department, Beirut, Lebanon and I.H.E.S. F-91440 Bures-sur-Yvette (France); Froehlich, J.; Schubnel, B. [ETHZ, Mathematics and Physics Departments, Zuerich (Switzerland)] [ETHZ, Mathematics and Physics Departments, Zuerich (Switzerland); Wyler, D. [Institute of Theoretical Physics, University of Zuerich (Switzerland)] [Institute of Theoretical Physics, University of Zuerich (Switzerland)

    2013-01-15T23:59:59.000Z

    We describe a novel approach to dimensional reduction in classical field theory. Inspired by ideas from noncommutative geometry, we introduce extended algebras of differential forms over space-time, generalized exterior derivatives, and generalized connections associated with the 'geometry' of space-times with discrete extra dimensions. We apply our formalism to theories of gauge- and gravitational fields and find natural geometrical origins for an axion- and a dilaton field, as well as a Higgs field.

  6. Pottebaum et al. Event Definition for Intelligent Resource Management Event Definition for the Application of Event

    E-Print Network [OSTI]

    Paliouras, George

    of resource management (use case and demand side) and event processing (technology and supply side). MethodsPottebaum et al. Event Definition for Intelligent Resource Management Event Definition for the Application of Event Processing to Intelligent Resource Management Jens Pottebaum University of Paderborn, C

  7. Noncommutative Inspired Black Holes in Extra Dimensions

    SciTech Connect (OSTI)

    Rizzo, Thomas G.

    2006-06-07T23:59:59.000Z

    In a recent string theory motivated paper, Nicolini, Smailagic and Spallucci (NSS) presented an interesting model for a noncommutative inspired, Schwarzschild-like black hole solution in 4-dimensions. The essential effect of having noncommutative co-ordinates in this approach is to smear out matter distributions on a scale associated with the turn-on of noncommutativity which was taken to be near the 4-d Planck mass. In particular, NSS assumed that this smearing was essentially Gaussian. This energy scale is sufficiently large that in 4-d such effects may remain invisible indefinitely. Extra dimensional models which attempt to address the gauge hierarchy problem, however, allow for the possibility that the effective fundamental scale may not be far from {approx} 1 TeV, an energy regime that will soon be probed by experiments at both the LHC and ILC. In this paper we generalize the NSS model to the case where flat, toroidally compactified extra dimensions are accessible at the TeV-scale and examine the resulting modifications in black hole properties due to the existence of noncommutativity. We show that while many of the noncommutativity-induced black hole features found in 4-d by NSS persist, in some cases there can be significant modifications due the presence of extra dimensions. We also demonstrate that the essential features of this approach are not particularly sensitive to the Gaussian nature of the smearing assumed by NSS.

  8. Why we live in 3 Dimensions

    E-Print Network [OSTI]

    Carlos Castro; Alex Granik; M. S. El Naschie

    2000-08-18T23:59:59.000Z

    A Cantorian fractal spacetime, a family member of von Neumann's noncommutative geometry is introduced as a geometry underlying a new relativity theory which is similar to the relation between general relativity and Riemannian geometry. Based on this model and the new relativity theory an ensemble distribution of all the dimensions of quantum spacetime is derived with the help of Fermat grand theorem. The calculated average dimension is very close to the value of $4+\\phi^3 $ (where $\\phi$ is the golden mean) obtained by El Naschie on the basis of a different approach. It is shown that within the framework of the new relativity the cosmological constant problem is nonexistent, since the Universe self-organizes and self-tunes according to the renormalization group (RG) flow with respect to a local scaling microscopic arrow of time. This implies that the world emerged as a result of a non-equilibrium process of self-organized critical phenomena launched by vacuum fluctuations in Cantorian fractal spacetime $\\cal E^{\\infty}$. It is shown that we are living in a metastable vacuum and are moving towards a fixed point ($ D$ = 4+$\\phi^3$) of the RG. After reaching this point, a new phase transition will drive the universe to a quasi-crystal phase of the lower average dimension of $\\phi^3$.

  9. PACKING DIMENSION OF THE RANGE OF A LEVY PROCESS DAVAR KHOSHNEVISAN AND YIMIN XIAO

    E-Print Network [OSTI]

    Khoshnevisan, Davar

    , normalized so that E[exp(izX(t))] = exp(-t(z)) for all t 0 and z Rd , and let dimP denote the packing dimension (Tricot, 1982; Sullivan, 1984). Taylor (1986) has proved that with probability one, dimP X([0 , 1 is to describe = dimP X([0 , 1]) more explicitly than (0.1), and solely in terms of the L´evy exponent . For all

  10. 2014 Manufacturing Energy and Carbon Footprints: Definitions...

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

    and Assumptions A number of key terms are used to interpret the manufacturing energy and carbon footprints. The terms associated with the energy footprint analysis are...

  11. Adena Rissman Assistant Professor, Human Dimensions of Ecosystem Management

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Adena Rissman Assistant Professor, Human Dimensions of Ecosystem Management Department of Forest Professor: 2009-present Human Dimensions of Ecosystem Management Department of Forest and Wildlife Ecology, Integrative Graduate Education and Research Training (IGERT). "Novel ecosystems, rapid change, and no

  12. Splitting a Complex of Convex Polytopes In Any Dimension*

    E-Print Network [OSTI]

    Texas at Austin, University of

    ]. The main contributions of this approach atw (i) it c,an be applied to polyhedral complexes of any dimension

  13. Dimension two vacuum condensates in gauge-invariant theories

    E-Print Network [OSTI]

    D. V. Bykov; A. A. Slavnov

    2005-05-11T23:59:59.000Z

    Gauge dependence of the dimension two condensate in Abelian and non-Abelian Yang-Mills theory is investigated.

  14. On the fractal dimension of the Duffing attractor

    E-Print Network [OSTI]

    Mariusz Tarnopolski

    2014-09-12T23:59:59.000Z

    The box counting dimension $d_C$ and the correlation dimension $d_G$ change with the number of numerically generated points forming the attractor. At a sufficiently large number of points the fractal dimension tends to a finite value. The obtained values are $d_C\\approx 1.43$ and $d_G\\approx 1.38$.

  15. Generalized dimensions of images of measures under Gaussian processes

    E-Print Network [OSTI]

    Falconer, Kenneth

    ). The corresponding question for packing dimension dimP, where dimensions of images of sets can behave in a more Brownian motion, dimP X(E) = dimd P E a.s., where dims P E is the `packing dimension profile' of E

  16. Defining the Dimensions of the Human Semantic Space Vladislav D. Veksler Ryan Z. Govostes Wayne D. Gray

    E-Print Network [OSTI]

    Gray, Wayne

    dynamic corpora such as the World Wide Web. There have been some attempts to reduce the vector-based form to allow these measures to evaluate relatedness of multi-word terms (documents, paragraphs). We. With the resulting dimension sets, VGEM matches or outperforms the probability-based measure, while adding the multi-word

  17. Noncommutative field theory: Nonrelativistic fermionic field coupled to the Chern-Simons field in 2+1 dimensions

    SciTech Connect (OSTI)

    Anacleto, M.A.; Gomes, M.; Silva, A.J. da; Spehler, D. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05315-970, Sao Paulo, SP (Brazil)

    2005-05-15T23:59:59.000Z

    We study a noncommutative nonrelativistic fermionic field theory in 2+1 dimensions coupled to the Chern-Simons field. We perform a perturbative analysis of the model and show that up to one loop the ultraviolet divergences are canceled and the infrared divergences are eliminated by the noncommutative Pauli term.

  18. Terms and Conditions

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

    US) 1 800-333-7638 (Inside US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Terms and...

  19. Document Type: Subject Terms

    E-Print Network [OSTI]

    Major, Arkady

    Title: Authors: Source: Document Type: Subject Terms: Abstract: Full Text Word Count: ISSN at creating team results. In fact, it's priceless. Managers in Western corporations have received a lifetime

  20. Root Cause Analysis: Terms and Definitions, Accimaps, MES, SOL and WBA Peter Bernard Ladkin

    E-Print Network [OSTI]

    Ladkin, Peter B.

    include the Piper Alpha oil-rig accident, the Kings Cross underground-station fire, and the Ladbroke Grove railway collision, all investigated by commissions headed by the judge Lord Cullen, and in Australia

  1. Low impact development practices terms and definitions developed by Regional language bank partners 2010

    E-Print Network [OSTI]

    Tullos, Desiree

    are permeable pavers, pervious concrete, porous asphalt and gravel. 11. stormwater runoff using rain gardens, planters, swales, porous pavement, tree canopy and other methods. #12;10. porous pavement - Surface to walk, drive or park

  2. NONLINEAR MODELS IN 2 +{epsilon} DIMENSIONS

    SciTech Connect (OSTI)

    Friedan, D.

    1980-05-01T23:59:59.000Z

    A generalization of the nonlinear ~ model is considered. The field takes values in a compact manifold M and the coupling is determined by a Riemannian metric on H. The model is renormalizable in 2 + ~ dimensions, the renormalization group acting on the infinite dimensional space of Riemannian metrics. Topological properties of the p-function and solutions of the fixed point equation R{sub ij}-?g{sub ij}=?{sub i}v{sub j}+?{sub j}v{sub i}, ?=1 or 0, are discussed.

  3. JOINT DEGREE PROGRAMS DEFINITION AND POLICY

    E-Print Network [OSTI]

    Omiecinski, Curtis

    1 JOINT DEGREE PROGRAMS DEFINITION AND POLICY: Within the fields of medicine and law, dual training for such complementary training can be demonstrated, the creation of a formal "Joint" degree program in which students or MD) offered at Penn State may be warranted. Such Joint degree programs enhance the educational

  4. Pink Eye Conjunctivitis Definition, Symptoms and Causes

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Pink Eye ­ Conjunctivitis Definition, Symptoms and Causes Pink eye is the common name given to inflammation of the conjunctiva of the eye. It is otherwise called conjunctivitis. The conjunctiva is the transparent membrane that lines the eyelids and covers the whites of the eyes. Very small, superficial blood

  5. Business Practice Manual for Definitions & Acronyms

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Janaury 21, 2011 #12;CAISO Business Practice Manual BPM for Definitions & Acronyms Version 76 Last Revised: March 31, 2009 BPM Owner: Mike Dozier BPM Owner's Title: Senior Counsel Revision History Version Date Description 2 2009-12-18 Incorporating payment acceleration language submitted in BPM PRR 122

  6. Evolutionary Algorithms for Definition Extraction Claudia Borg

    E-Print Network [OSTI]

    Pace, Gordon J.

    Evolutionary Algorithms for Definition Extraction Claudia Borg Dept. of I.C.S. University of Malta claudia.borg@um.edu.mt Mike Rosner Dept. of I.C.S. University of Malta mike.rosner@um.edu.mt Gordon Pace Dept. of Computer Science University of Malta gordon.pace@um.edu.mt Abstract Books and other text

  7. Shape Dynamics in 2+1 Dimensions

    E-Print Network [OSTI]

    Timothy Budd; Tim Koslowski

    2011-07-07T23:59:59.000Z

    Shape Dynamics is a formulation of General Relativity where refoliation invariance is traded for local spatial conformal invariance. In this paper we explicitly construct Shape Dynamics for a torus universe in 2+1 dimensions through a linking gauge theory that ensures dynamical equivalence with General Relativity. The Hamiltonian we obtain is formally a reduced phase space Hamiltonian. The construction of the Shape Dynamics Hamiltonian on higher genus surfaces is not explicitly possible, but we give an explicit expansion of the Shape Dynamics Hamiltonian for large CMC volume. The fact that all local constraints are linear in momenta allows us to quantize these explicitly, and the quantization problem for Shape Dynamics turns out to be equivalent to reduced phase space quantization. We consider the large CMC-volume asymptotics of conformal transformations of the wave function. We then use the similarity of Shape Dynamics on the 2-torus with the explicitly constructible strong gravity (BKL) Shape Dynamics Hamiltonian in higher dimensions to suggest a quantization strategy for Shape Dynamics.

  8. Physical Vacuum Properties and Internal Space Dimension

    E-Print Network [OSTI]

    M. V. Gorbatenko; A. V. Pushkin

    2004-09-25T23:59:59.000Z

    The paper addresses matrix spaces, whose properties and dynamics are determined by Dirac matrices in Riemannian spaces of different dimension and signature. Among all Dirac matrix systems there are such ones, which nontrivial scalar, vector or other tensors cannot be made up from. These Dirac matrix systems are associated with the vacuum state of the matrix space. The simplest vacuum system realization can be ensured using the orthonormal basis in the internal matrix space. This vacuum system realization is not however unique. The case of 7-dimensional Riemannian space of signature 7(-) is considered in detail. In this case two basically different vacuum system realizations are possible: (1) with using the orthonormal basis; (2) with using the oblique-angled basis, whose base vectors coincide with the simple roots of algebra E_{8}. Considerations are presented, from which it follows that the least-dimension space bearing on physics is the Riemannian 11-dimensional space of signature 1(-)& 10(+). The considerations consist in the condition of maximum vacuum energy density and vacuum fluctuation energy density.

  9. Quantum critical metals in $4-?$ dimensions

    E-Print Network [OSTI]

    Gonzalo Torroba; Huajia Wang

    2014-11-20T23:59:59.000Z

    We study the quantum theory of a Fermi surface coupled to a gapless boson scalar in $D=4-\\epsilon$ spacetime dimensions as a simple model for non-Fermi liquids (NFL) near a quantum phase transition. Our analysis takes into account the full backreaction from Landau damping of the boson, and obtains an RG flow that proceeds through three distinct stages. Above the scale of Landau damping the Fermi velocity flows to zero, while the coupling evolves according to its classical dimension. Once damping becomes important, its backreaction leads to a crossover regime where dynamic and static damping effects compete and the fermion self-energy does not respect scaling. Below this crossover and having tuned the boson to criticality, the theory flows to a $z=3$ scalar interacting with a NFL. By increasing the number of bosonic flavors, the phase diagram near the quantum critical point interpolates between a superconducting dome fully covering the NFL behavior, and a phase where NFL effects become important first, before the onset of superconductivity. A generic prediction of the theory is that the Fermi velocity and quasiparticle residue vanish with a power-law $\\omega^\\epsilon$ as the fixed point is approached. These features may be useful for understanding some of the phenomenology of high $T_c$ materials in a systematic $\\epsilon$--expansion.

  10. Volume 116B, number 4 PHYSICSLETTERS 14 October 1982 CHARGE DEFINITION IN NON-ABEL[AN GAUGE THEORIES ~

    E-Print Network [OSTI]

    Columbia University

    Volume 116B, number 4 PHYSICSLETTERS 14 October 1982 CHARGE DEFINITION IN NON-ABEL[AN GAUGE THEORIES ~ L.F. ABBOTT and S. DESER Brandeis University, Waltham, MA 02254, USA Received 9 June 1982 Conserved gauge-invariant electric and magnetic charges are defined for non-abelian gauge theories in terms

  11. Energy definition for quadratic curvature gravities

    E-Print Network [OSTI]

    Ahmet Baykal

    2012-12-03T23:59:59.000Z

    A conserved current for generic quadratic curvature gravitational models is defined, and it is shown that, at the linearized level, it corresponds to the Deser-Tekin charges. An explicit expression for the charge for new massive gravity in three dimensions is given. Some implications of the linearized equations are discussed.

  12. Annual resources report. [Glossary on technical terms

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    The report is separated into the following sections: acknowledgments; a table of contents; a list of tables and figures; a glossary; an introduction; an overview of the role of energy resources in New Mexico; separate sections on oil and gas, coal, electrical generation, uranium, and geothermal energy; a section on the geologic setting of oil and gas, coal, and uranium; an appendix of additional tables pertaining to oil and gas development; and a listing of selected references. The glossary is a brief listing of technical terms used in the report with simplified definitions for the reader's use. The overview contains highlights of data found in the report as well as comparisons of New Mexico's resources with those of other states and the nation. In general, each section covering a resource area describes reserves, production, prices, consumption, transportation, employment, and revenue statistics over the past ten or more years and projections to the year 2000.

  13. Definitional Reflection and the Completion Peter Schroeder-Heister *

    E-Print Network [OSTI]

    Schroeder-Heister, Peter

    /11-1, and by Esprit Basic Research Working Group 7232 (GENTZEN). #12;334 which is the completed definition

  14. Manufacturing Energy and Carbon Footprint Definitions and Assumptions...

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

    More Documents & Publications Understanding Manufacturing Energy and Carbon Footprints, October 2012 2010 Manufacturing Energy and Carbon Footprints: Definitions...

  15. A comparison of world-wide uses of severe reactor accident source terms

    SciTech Connect (OSTI)

    Ang, M.L. [NNC Ltd., Knutsford (United Kingdom); Frid, W. [Swedish Nuclear Power Inspectorate, Stockholm (Sweden); Kersting, E.J.; Friederichs, H.G. [Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) mbH, Koeln (Germany); Lee, R.Y. [Nuclear Regulatory Commission, Washington, DC (United States); Meyer-Heine, A. [CEA Centre d`Etudes de Cadarache, Saint Paul Lez Durance (France); Powers, D.A. [Sandia National Labs., Albuquerque, NM (United States); Soda, K. [Japan Atomic Energy Research Inst., Tokyo (Japan); Sweet, D. [AEA Technology, Winfrith (United Kingdom)

    1994-09-01T23:59:59.000Z

    The definitions of source terms to reactor containments and source terms to the environment are discussed. A comparison is made between the TID-14844 example source term and the alternative source term described in NUREG-1465. Comparisons of these source terms to the containments and those used in France, Germany, Japan, Sweden, and the United Kingdom are made. Source terms to the environment calculated in NUREG-1500 and WASH-1400 are discussed. Again, these source terms are compared to those now being used in France, Germany, Japan, Sweden, and the United Kingdom. It is concluded that source terms to the containment suggested in NUREG-1465 are not greatly more conservative than those used in other countries. Technical bases for the source terms are similar. The regulatory use of the current understanding of radionuclide behavior varies among countries.

  16. Preference Term List

    E-Print Network [OSTI]

    Wu, Yih-Min

    Subject Bibliography Library #12; 1/2 Edit Preferences #12; 2/2 Library PreferencesDisplay Fields PreferencesDuplicates PreferencesFind Full Text PreferencesReference Types #12;? #12;Journal term list() Bibliography() Footnotes() #12;15 4.Journal Article "Insert Field" #12;16 5. : "Reference Types ""Insert

  17. Michael Rupen EVLA Phase II Definition Aug 23 25, 2001.

    E-Print Network [OSTI]

    Groppi, Christopher

    Michael Rupen EVLA Phase II Definition Meeting Aug 23 ­ 25, 2001. 1 EVLA Phase II Scientific Overview Michael P. Rupen #12;Michael Rupen EVLA Phase II Definition Meeting Aug 23 ­ 25, 2001. 2 New the resolution · Always available! #12;Michael Rupen EVLA Phase II Definition Meeting Aug 23 ­ 25, 2001. 3 NMA

  18. Formal definition of POTENTIAL ENERGY (valid for conservative forces only)

    E-Print Network [OSTI]

    page - 16 Formal definition of POTENTIAL ENERGY (valid for conservative forces only) Given one type of conservative force F UB - UA= - = - Definition of 'Potential energy difference" conserv #12;page - 17 the definition of the "potential energy difference UB - UA " as equal to negative value of the work W done

  19. Language Definitions as Rewrite Theories Andrei Arusoaie1

    E-Print Network [OSTI]

    Boyer, Edmond

    Language Definitions as Rewrite Theories Andrei Arusoaie1 , Dorel Lucanu1 , Vlad Rusu2 , Traian languages. It includes software tools for compiling K language definitions to Maude rewrite theories transformation of language definitions that enables the symbolic execution of programs, i.e., the exe- cution

  20. Definite Descriptions, Focus Shift, and a Theory of Discourse Interpretation

    E-Print Network [OSTI]

    Poesio, Massimo

    Definite Descriptions, Focus Shift, and a Theory of Discourse Interpretation Massimo Poesio Centre of situations and their hierarchical organization. 1 Ingredients of a Theory of Definite Description Inter­ pretation A theory of definite description (DD) interpretation must build on a general theory of discourse

  1. NIH WORKING DEFINITION OF BIOINFORMATICS AND COMPUTATIONAL BIOLOGY

    E-Print Network [OSTI]

    Rau, Don C.

    NIH WORKING DEFINITION OF BIOINFORMATICS AND COMPUTATIONAL BIOLOGY July 17, 2000 The following working definition of bioinformatics and computational biology were developed by the BISTIC Definition Liu Preamble Bioinformatics and computational biology are rooted in life sciences as well as computer

  2. Extra dimensions, orthopositronium decay, and stellar cooling

    E-Print Network [OSTI]

    Alexander Friedland; Maurizio Giannotti

    2007-09-14T23:59:59.000Z

    In a class of extra dimensional models with a warped metric and a single brane the photon can be localized on the brane by gravity only. An intriguing feature of these models is the possibility of the photon escaping into the extra dimensions. The search for this effect has motivated the present round of precision orthopositronium decay experiments. We point out that in this framework a photon in plasma should be metastable. We consider the astrophysical consequences of this observation, in particular, what it implies for the plasmon decay rate in globular cluster stars and for the core-collapse supernova cooling rate. The resulting bounds on the model parameter exceed the possible reach of orthopositronium experiments by many orders of magnitude.

  3. The BCS - BEC Crossover In Arbitrary Dimensions

    E-Print Network [OSTI]

    Zohar Nussinov; Shmuel Nussinov

    2005-10-11T23:59:59.000Z

    Cold atom traps and certain neutron star layers may contain fermions with separation much larger than the range of pair-wise potentials yet much shorter than the scattering length. Such systems can display {\\em universal} characteristics independent of the details of the short range interactions. In particular, the energy per particle is a fraction $\\xi$ of the Fermi energy of the free Fermion system. Our main result is that for space dimensions D smaller than two and larger than four a specific extension of this problem readily yields $\\xi=1$ for all $D \\le 2$ whereas $\\xi$ is rigorously non-positive (and potentially vanishing) for all $ D \\ge 4$. We discuss the D=3 case. A particular unjustified recipe suggests $\\xi=1/2$ in D=3.

  4. Solar Energy Generation in Three Dimensions

    E-Print Network [OSTI]

    Bernardi, Marco; Wan, Jin H; Villalon, Rachelle; Grossman, Jeffrey C

    2011-01-01T23:59:59.000Z

    Optimizing the conversion of solar energy to electricity is central to the World's future energy economy. Flat photovoltaic panels are commonly deployed in residential and commercial rooftop installations without sun tracking systems and using simple installation guidelines to optimize solar energy collection. Large-scale solar energy generation plants use bulky and expensive sun trackers to avoid cosine losses from photovoltaic panels or to concentrate sunlight with mirrors onto heating fluids.[1,2] However, none of these systems take advantage of the three-dimensional nature of our biosphere, so that solar energy collection largely occurs on flat structures in contrast with what is commonly observed in Nature.[3,4] Here we formulate, solve computationally and study experimentally the problem of collecting solar energy in three-dimensions.[5] We demonstrate that absorbers and reflectors can be combined in the absence of sun tracking to build three-dimensional photovoltaic (3DPV) structures that can generate ...

  5. Self-consistent bounces in two dimensions

    SciTech Connect (OSTI)

    Baacke, Juergen; Kevlishvili, Nina [Institut fuer Physik, Universitaet Dortmund, D-44221 Dortmund (Germany)

    2005-01-15T23:59:59.000Z

    We compute bounce solutions describing false vacuum decay in a {phi}{sup 4} model in two dimensions in the Hartree approximation, thus going beyond the usual one-loop corrections to the decay rate. We use zero energy mode functions of the fluctuation operator for the numerical computation of the functional determinant and the Green's function. We thus avoid the necessity of discretizing the spectrum, as it is necessary when one uses numerical techniques based on eigenfunctions. Regularization is performed in analogy of standard perturbation theory; the renormalization of the Hartree approximation is based on the two-particle point-irreducible scheme. The iteration towards the self-consistent solution is found to converge for some range of the parameters. Within this range we find the corrections to the leading one-loop approximation to be relatively small, not exceeding 1 order of magnitude in the total transition rate.

  6. The Definition and Classification of Universes

    SciTech Connect (OSTI)

    Bjorken, J.

    2004-10-12T23:59:59.000Z

    We assume that the concept of a multiverse makes sense, and suggest a specific, standardized definition for member universes which are similar to our own. Central to this description is the definition of size, which is taken to be the asymptotic value, at large times, of the inverse Hubble constant. Thus the cosmological constant plays a central role in defining the properties of the subset of universes similar to our own. We then assume that vacuum parameters and coupling constants of the standard model are dependent upon the size of a universe, and propose a specific form for the dependence. Anthropic considerations then limit the size of habitable universes (as we understand that concept) to be within a factor two of our own. Implications of this picture for understanding the standard-model ''hierarchy problem'' are discussed, as are general issues of falsifiability and/or verifiability of these ideas.

  7. Family symmetry and single right-handed neutrino dominance in five dimensions

    SciTech Connect (OSTI)

    Eisele, Marc-Thomas; Haba, Naoyuki [Physik-Department, Technische Universitaet Muenchen, James-Franck-Strasse, 85748 Garching (Germany)

    2006-10-01T23:59:59.000Z

    We consider several neutrino mass models in an extra-dimensional setting on a quantitative level. All the models are set in a five-dimensional scenario, with the standard model (SM) particles living on a brane, while three additional SM gauge singlets live in the bulk of an extra dimension, which is compactified on a S{sup 1}/Z{sub 2} orbifold. The spontaneous breaking of an additional, continuous U(1) family symmetry is used to generate suitable neutrino mass matrices via single right-handed neutrino dominance through the corresponding five-dimensional extension of the seesaw mechanism. In this manner, possible problems of this combination for some models in four dimensions could be overcome. The considered models differ with respect to the charges under the family symmetry and the nature of the five-dimensional Majorana mass term.

  8. Adjuvant and Definitive Radiotherapy for Adrenocortical Carcinoma

    SciTech Connect (OSTI)

    Sabolch, Aaron [University of Michigan Medical School, Ann Arbor, MI (United States); Feng, Mary [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Griffith, Kent [Department of Biostatistics Unit, University of Michigan Comprehensive Cancer Center, Ann Arbor, MI (United States); Hammer, Gary [Department of Internal Medicine, University of Michigan, Ann Arbor, MI (United States); Doherty, Gerard [Department of Surgery, University of Michigan, Ann Arbor, MI (United States); Ben-Josef, Edgar, E-mail: edgarb@med.umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)

    2011-08-01T23:59:59.000Z

    Purpose: To evaluate the impact of both adjuvant and definitive radiotherapy on local control of adrenocortical carcinoma. Methods and Materials: Outcomes were analyzed from 58 patients with 64 instances of treatment for adrenocortical carcinoma at the University of Michigan's Multidisciplinary Adrenal Cancer Clinic. Thirty-seven of these instances were for primary disease, whereas the remaining 27 were for recurrent disease. Thirty-eight of the treatment regimens involved surgery alone, 10 surgery plus adjuvant radiotherapy, and 16 definitive radiotherapy for unresectable disease. The effects of patient, tumor, and treatment factors were modeled simultaneously using multiple variable Cox proportional hazards regression for associations with local recurrence, distant recurrence, and overall survival. Results: Local failure occurred in 16 of the 38 instances that involved surgery alone, in 2 of the 10 that consisted of surgery plus adjuvant radiotherapy, and in 1 instance of definitive radiotherapy. Lack of radiotherapy use was associated with 4.7 times the risk of local failure compared with treatment regimens that involved radiotherapy (95% confidence interval, 1.2-19.0; p = 0.030). Conclusions: Radiotherapy seems to significantly lower the risk of local recurrence/progression in patients with adrenocortical carcinoma. Adjuvant radiotherapy should be strongly considered after surgical resection.

  9. Constructive Dimension and Weak Truth-Table Degrees

    E-Print Network [OSTI]

    Doty, David

    dimension dimH(S) and constructive packing dimension dimP(S) is weak truth-table equivalent to a sequence R with dimH(R) dimH(S)/dimP(S) - , for arbitrary > 0. Furthermore, if dimP(S) > 0, then dimP(R) 1H(S) = dimP(S)) such that dimH(S) > 0, the wtt degree of S has constructive Hausdorff and packing dimension

  10. Einstein's Dream of Unified Forces - extra dimensions | U.S....

    Office of Science (SC) Website

    hidden? What are the new particles associated with extra dimensions? Through the production of new particles that move in the extra space, the LHC experiments will have direct...

  11. Gauge and Higgs Boson Masses from an Extra Dimension

    E-Print Network [OSTI]

    Graham Moir; Peter Dziennik; Nikos Irges; Francesco Knechtli; Kyoko Yoneyama

    2014-11-03T23:59:59.000Z

    We present novel calculations of the mass hierarchy of the $SU(2)$ pure gauge theory on a space-time lattice with an orbifolded fifth dimension. This theory has three parameters; the gauge coupling $\\beta$, the anisotropy $\\gamma$, which is a measure of the ratio of the lattice spacing in the four dimensions to that in the fifth dimension, and the extent of the extra dimension $N_{5}$. Using a large basis of scalar and vector operators we explore in detail the spectrum along the $\\gamma = 1$ line, and for the first time we investigate the spectrum for $\\gamma \

  12. Generalized Klein-Gordon equations in d dimensions from supersymmetry

    SciTech Connect (OSTI)

    Bollini, C.G.; Giambiagi, J.J.

    1985-12-15T23:59:59.000Z

    The Wess-Zumino model is extended to higher dimensions, leading to a generalized Klein-Gordon equation whose propagator is computed in configuration space.

  13. K-theoretic rigidity and slow dimension growth

    E-Print Network [OSTI]

    2011-02-18T23:59:59.000Z

    Oct 28, 2009 ... In fact, there are no simple separable nuclear stably finite C. ? ... fine locally finite nuclear dimension here; it is enough for us that separable.

  14. Margin of Safety Definition and Examples Used in Safety Basis Documents and the USQ Process

    SciTech Connect (OSTI)

    Beaulieu, R. A.

    2013-10-03T23:59:59.000Z

    The Nuclear Safety Management final rule, 10 CFR 830, provides an undefined term, margin of safety (MOS). Safe harbors listed in 10 CFR 830, Table 2, such as DOE?STD?3009 use but do not define the term. This lack of definition has created the need for the definition. This paper provides a definition of MOS and documents examples of MOS as applied in a U.S. Department of Energy (DOE) approved safety basis for an existing nuclear facility. If we understand what MOS looks like regarding Technical Safety Requirements (TSR) parameters, then it helps us compare against other parameters that do not involve a MOS. This paper also documents parameters that are not MOS. These criteria could be used to determine if an MOS exists in safety basis documents. This paper helps DOE, including the National Nuclear Security Administration (NNSA) and its contractors responsible for the safety basis improve safety basis documents and the unreviewed safety question (USQ) process with respect to MOS.

  15. Long Term by Group

    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 HomeLatestCenterLogging in Logging inLogisticsLong Term

  16. GENERAL TERMS & CONDITIONS

    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) Environmental AssessmentsGeoffrey Campbell isOklahoma City,GENERAL TERMS &

  17. Holographic c-theorems in arbitrary dimensions

    E-Print Network [OSTI]

    Robert C. Myers; Aninda Sinha

    2011-02-20T23:59:59.000Z

    We re-examine holographic versions of the c-theorem and entanglement entropy in the context of higher curvature gravity and the AdS/CFT correspondence. We select the gravity theories by tuning the gravitational couplings to eliminate non-unitary operators in the boundary theory and demonstrate that all of these theories obey a holographic c-theorem. In cases where the dual CFT is even-dimensional, we show that the quantity that flows is the central charge associated with the A-type trace anomaly. Here, unlike in conventional holographic constructions with Einstein gravity, we are able to distinguish this quantity from other central charges or the leading coefficient in the entropy density of a thermal bath. In general, we are also able to identify this quantity with the coefficient of a universal contribution to the entanglement entropy in a particular construction. Our results suggest that these coefficients appearing in entanglement entropy play the role of central charges in odd-dimensional CFT's. We conjecture a new c-theorem on the space of odd-dimensional field theories, which extends Cardy's proposal for even dimensions. Beyond holography, we were able to show that for any even-dimensional CFT, the universal coefficient appearing the entanglement entropy which we calculate is precisely the A-type central charge.

  18. Fractal dimension in dissipative chaotic scattering Jess M. Seoane,1,

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Fractal dimension in dissipative chaotic scattering Jesús M. Seoane,1, * Miguel A. F. Sanjuán,1 on chaotic scattering is relevant to situations of physical interest. We inves- tigate how the fractal is thus the fractal dimension of the set of singularities. For nonhyperbolic scattering, it has been known

  19. The Wavelet Dimension Function for Real Dilations and Dilations Admitting

    E-Print Network [OSTI]

    Bownik, Marcin

    The Wavelet Dimension Function for Real Dilations and Dilations Admitting non-MSF Wavelets Marcin Bownik and Darrin Speegle Abstract. The wavelet dimension function for arbitrary real dila- tions is defined and used to address several questions involving the existence of MRA wavelets and well

  20. Interactive Dimensions in the Construction of Mental Representations for Text

    E-Print Network [OSTI]

    Patel, Aniruddh D.

    Interactive Dimensions in the Construction of Mental Representations for Text David N. Rapp be as critical to the construction of complex mental models as the discrete dimensions themselves. In the present a bead on Specify again. Incredibly, the horse was still rolling along. A pang of fear went through Woolf

  1. Analytical solutions of a generalized non-central potential in N-dimensions

    SciTech Connect (OSTI)

    Durmus, Aysen, E-mail: aysend@erciyes.edu.tr [Department of Physics, Erciyes University, Kayseri 38039 (Turkey); zfidan, Aysel [Institute of Science, Erciyes University, Kayseri 38039 (Turkey)

    2014-10-15T23:59:59.000Z

    We present that N-dimensional non-relativistic wave equation for the generalized non-central potential with arbitrary angular momentum is analytically solvable in the hyperspherical coordinates. Asymptotic iteration method as a different approach is applied to obtain N-dimensional energy eigenvalues and the corresponding eigenfunctions. In hyperspherical coordinates, the wave function solutions are obtained in terms of hypergeometric functions and Jacobi polynomials. The bound states of quantum systems under consideration for some special cases, such as Hartmann and Makarov potentials, have been discussed in N-dimensions.

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions Key

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions KeyReceipts by

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions KeyReceipts

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions

  6. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea DefinitionsRail between PAD

  7. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea DefinitionsRail between

  8. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea DefinitionsRail

  9. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea DefinitionsRailTanker and

  10. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea DefinitionsRailTanker

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea DefinitionsRailTankerImports

  12. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksAreaChargeInput Definitions Key

  13. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksAreaChargeInput Definitions

  14. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksAreaChargeInputYield Definitions

  15. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs & Utilization Definitions Key

  16. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs & Utilization Definitions

  17. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

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  18. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

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  19. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputsTotal Stocks Definitions

  20. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputsTotal Stocks DefinitionsWeekly

  1. Effects of Ultramicroelectrode Dimensions on the Electropolymerization of Polypyrrole

    SciTech Connect (OSTI)

    Fletcher, Benjamin L [ORNL; Fern, Jared T. [University of Tennessee, Knoxville (UTK); Rhodes, Kevin [University of Tennessee, Knoxville (UTK); McKnight, Timothy E [ORNL; Fowlkes, Jason Davidson [ORNL; Retterer, Scott T [ORNL; Keffer, David J. [University of Tennessee, Knoxville (UTK); Simpson, Michael L [ORNL; Doktycz, Mitchel John [ORNL

    2009-01-01T23:59:59.000Z

    Anode geometry can significantly affect the electrochemical synthesis of conductive polymers. Here, the effects of anode dimensions on the electropolymerization of pyrrole are investigated. Band microelectrodes were prepared with widths ranging from 2 to 500 {micro}m. The anode dimension has a significant effect on the resulting thickness of polymer film. The electropolymerization process deviates significantly from that predicted by simple mass transfer considerations when electrode dimensions are less than {approx}20 {micro}m. Polymer film thickness is thinner than expected when electrode dimensions become less than {approx}10 {micro}m. A simple mathematical model was derived to explain the observed effects of anode dimensions on the polymerization process. Simulation results confirm that diffusive loss of reaction intermediates accounts for the observed experimental trends. The described simulation facilitates understanding of the electropolymerization processes and approaches to the controlled deposition of polypyrrole, particularly at the submicron scale, for microelectromechanical systems and biomedical applications.

  2. Reduced buckling in one dimension versus two dimensions of a compressively strained film on a compliant substrate

    E-Print Network [OSTI]

    is that the islands tend to buckle during anneal- ing to relieve stress, in addition to their lateral expansion Fig. 1Reduced buckling in one dimension versus two dimensions of a compressively strained film may permit undesirable roughening buckling of a compressively strained film. In this work, we

  3. Dissipative hydrodynamics in 2+1 dimension

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2006-05-25T23:59:59.000Z

    In 2+1 dimension, we have simulated the hydrodynamic evolution of QGP fluid with dissipation due to shear viscosity. Comparison of evolution of ideal and viscous fluid, both initialised under the same conditions e.g. same equilibration time, energy density and velocity profile, reveal that the dissipative fluid evolves slowly, cooling at a slower rate. Cooling get still slower for higher viscosity. The fluid velocities on the otherhand evolve faster in a dissipative fluid than in an ideal fluid. The transverse expansion is also enhanced in dissipative evolution. For the same decoupling temperature, freeze-out surface for a dissipative fluid is more extended than an ideal fluid. Dissipation produces entropy as a result of which particle production is increased. Particle production is increased due to (i) extension of the freeze-out surface and (ii) change of the equilibrium distribution function to a non-equilibrium one, the last effect being prominent at large transverse momentum. Compared to ideal fluid, transverse momentum distribution of pion production is considerably enhanced. Enhancement is more at high $p_T$ than at low $p_T$. Pion production also increases with viscosity, larger the viscosity, more is the pion production. Dissipation also modifies the elliptic flow. Elliptic flow is reduced in viscous dynamics. Also, contrary to ideal dynamics where elliptic flow continues to increase with transverse momentum, in viscous dynamics, elliptic flow tends to saturate at large transverse momentum. The analysis suggest that initial conditions of the hot, dense matter produced in Au+Au collisions at RHIC, as extracted from ideal fluid analysis can be changed significantly if the QGP fluid is viscous.

  4. The effective chiral Lagrangian from dimension-six parity and time-reversal violation

    SciTech Connect (OSTI)

    Vries, J. de, E-mail: devries.jordy@gmail.com [KVI, Theory Group, University of Groningen, 9747 AA Groningen (Netherlands); Nikhef, Science Park 105, 1098 XG Amsterdam (Netherlands); Mereghetti, E. [Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720 (United States)] [Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720 (United States); Timmermans, R.G.E. [KVI, Theory Group, University of Groningen, 9747 AA Groningen (Netherlands)] [KVI, Theory Group, University of Groningen, 9747 AA Groningen (Netherlands); Kolck, U. van [Institut de Physique Nuclaire, Universit Paris Sud, CNRS/IN2P3, 91406 Orsay (France) [Institut de Physique Nuclaire, Universit Paris Sud, CNRS/IN2P3, 91406 Orsay (France); Department of Physics, University of Arizona, Tucson, AZ 85721 (United States)

    2013-11-15T23:59:59.000Z

    We classify the parity- and time-reversal-violating operators involving quark and gluon fields that have effective dimension six: the quark electric dipole moment, the quark and gluon chromo-electric dipole moments, and four four-quark operators. We construct the effective chiral Lagrangian with hadronic and electromagnetic interactions that originate from them, which serves as the basis for calculations of low-energy observables. The form of the effective interactions depends on the chiral properties of these operators. We develop a power-counting scheme and calculate within this scheme, as an example, the parity- and time-reversal-violating pionnucleon form factor. We also discuss the electric dipole moments of the nucleon and light nuclei. -- Highlights: Classification of T-odd dimension-six sources based on impact on observables. Building of the chiral Lagrangian for each dimension-six source. Calculation of the PT-odd pionnucleon form factor for each source. Discussion of hadronic EDMs for each source and comparison with the theta term.

  5. Advanced Gasifier Pilot Plant Concept Definition

    SciTech Connect (OSTI)

    Steve Fusselman; Alan Darby; Fred Widman

    2005-08-31T23:59:59.000Z

    This report presents results from definition of a preferred commercial-scale advanced gasifier configuration and concept definition for a gasification pilot plant incorporating those preferred technologies. The preferred commercial gasifier configuration was established based on Cost Of Electricity estimates for an IGCC. Based on the gasifier configuration trade study results, a compact plug flow gasifier, with a dry solids pump, rapid-mix injector, CMC liner insert and partial quench system was selected as the preferred configuration. Preliminary systems analysis results indicate that this configuration could provide cost of product savings for electricity and hydrogen ranging from 15%-20% relative to existing gasifier technologies. This cost of product improvement draws upon the efficiency of the dry feed, rapid mix injector technology, low capital cost compact gasifier, and >99% gasifier availability due to long life injector and gasifier liner, with short replacement time. A pilot plant concept incorporating the technologies associated with the preferred configuration was defined, along with cost and schedule estimates for design, installation, and test operations. It was estimated that a 16,300 kg/day (18 TPD) pilot plant gasifier incorporating the advanced gasification technology and demonstrating 1,000 hours of hot-fire operation could be accomplished over a period of 33 months with a budget of $25.6 M.

  6. Definition of heavy oil and natural bitumen

    SciTech Connect (OSTI)

    Meyer, R.F.

    1988-08-01T23:59:59.000Z

    Definition and categorization of heavy oils and natural bitumens are generally based on physical or chemical attributes or on methods of extraction. Ultimately, the hydrocarbon's chemical composition will govern both its physical state and the extraction technique applicable. These oils and bitumens closely resemble the residuum from wholecrude distillation to about 1,000/degree/F; if the residuum constitutes at least 15% of the crude, it is considered to be heavy. In this material is concentrated most of the trace elements, such as sulfur, oxygen, and nitrogen, and metals, such as nickel and vanadium. A widely used definition separates heavy oil from natural bitumen by viscosity, crude oil being less, and bitumen more viscous than 10,000 cp. Heavy crude then falls in the range 10/degree/-20/degree/ API inclusive and extra-heavy oil less than 10/degree/ API. Most natural bitumen is natural asphalt (tar sands, oil sands) and has been defined as rock containing hydrocarbons more viscous than 10,000 cp or else hydrocarbons that may be extracted from mined or quarried rock. Other natural bitumens are solids, such as gilsonite, grahamite, and ozokerite, which are distinguished by streak, fusibility, and solubility. The upper limit for heavy oil may also be set at 18/degree/ API, the approximate limit for recovery by waterflood.

  7. Definition et unites Sources d'energie primaire

    E-Print Network [OSTI]

    Ravelet, Florent

    Definition et unites Sources d'energie primaire L'energie dans une perspective historique Etat Laboratoire DynFluid, Arts et Metiers-ParisTech 19 fevrier 2014 F. Ravelet Energies #12;Definition et unit Energies #12;Definition et unites Sources d'energie primaire L'energie dans une perspective historique

  8. Optimization Online - Semi-definite relaxations for optimal control ...

    E-Print Network [OSTI]

    Mathieu Claeys

    2014-10-28T23:59:59.000Z

    Oct 28, 2014 ... Abstract: Converging hierarchies of finite-dimensional semi-definite relaxations have been proposed for state-constrained optimal control...

  9. Modified definition of group velocity and electromagnetic energy conservation equation

    E-Print Network [OSTI]

    Changbiao Wang

    2015-01-19T23:59:59.000Z

    The classical definition of group velocity has two flaws: (a) the group velocity can be greater than the phase velocity in a non-dispersive, lossless, non-conducting, anisotropic uniform medium; (b) the definition is not consistent with the principle of relativity for a plane wave in a moving isotropic uniform medium. To remove the flaws, a modified definition is proposed. A criterion is set up to identify the justification of group velocity definition. A "superluminal power flow" is constructed to show that the electromagnetic energy conservation equation cannot uniquely define the power flow if the principle of Fermat is not taken into account.

  10. BLOCK DIAGONALLY DOMINANT POSITIVE DEFINITE APPROXIMATE FILTERS AND SMOOTHERS

    E-Print Network [OSTI]

    BLOCK DIAGONALLY DOMINANT POSITIVE DEFINITE APPROXIMATE FILTERS AND SMOOTHERS Running title: BLOCKciently small as to preclude the loss of positive de#12;niteness in the approximate equations. Therefore

  11. On the definition of velocity in doubly special relativity theories

    E-Print Network [OSTI]

    Piotr Kosinski; Pawel Maslanka

    2002-11-13T23:59:59.000Z

    We discuss the definition of particle velocity in doubly relativity theories. The general formula relating velocity and four-momentum of particle is given.

  12. Redundant axioms in the definition of Bregman functions

    E-Print Network [OSTI]

    Jan 22, 2002 ... REDUNDANT AXIOMS IN THE DEFINITION OF BREGMAN ...... some new results on the theory of Bregman functions, Mathematics of...

  13. The fractal dimension of the spectrum of quasiperiodical schrodinger operators

    E-Print Network [OSTI]

    Laurent Marin

    2012-02-20T23:59:59.000Z

    We study the fractal dimension of the spectrum of a quasiperiodical Schrodinger operator associated to a sturmian potential. We consider potential defined with irrationnal number verifying a generic diophantine condition. We recall how shape and box dimension of the spectrum is linked to the irrational number properties. In the first place, we give general lower bound of the box dimension of the spectrum, true for all irrational numbers. In the second place, we improve this lower bound for almost all irrational numbers. We finally recall dynamical implication of the first bound.

  14. Physical Interpretation of the 26 Dimensions of Bosonic String Theory

    E-Print Network [OSTI]

    Frank D. Smith Jr

    2002-07-15T23:59:59.000Z

    The 26 dimensions of Closed Unoriented Bosonic String Theory are interpreted as the 26 dimensions of the traceless Jordan algebra J3(O)o of 3x3 Octonionic matrices, with each of the 3 Octonionic dimenisons of J3(O)o having the following physical interpretation: 4-dimensional physical spacetime plus 4-dimensional internal symmetry space; 8 first-generation fermion particles; 8 first-generation fermion anti-particles. This interpretation is consistent with interpreting the strings as World Lines of the Worlds of Many-Worlds Quantum Theory and the 26 dimensions as the degrees of freedom of the Worlds of the Many-Worlds.

  15. Short-term Forecasting of Offshore Wind Farm Production Developments of the Anemos Project

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Short-term Forecasting of Offshore Wind Farm Production Developments of the Anemos Project J to the large dimensions of offshore wind farms, their electricity production must be known well in advance networks) models were calibrated on power data from two offshore wind farms: Tunoe and Middelgrunden

  16. Genomic definition of species. Revision 2

    SciTech Connect (OSTI)

    Crkvenjakov, R.; Drmanac, R.

    1993-03-01T23:59:59.000Z

    A genome is the sum total of the DNA sequences in the cells of an individual organism. The common usage that species possess genomes comes naturally to biochemists, who have shown that all protein and nucleic acid molecules are at the same time species- and individual-specific, with minor individual variations being superimposed on a consensus sequence that is constant for a species. By extension, this property is attributed to the common features of DNA in the chromosomes of members of a given species and is called species genome. Our proposal for the definition of a biological species is as follows: A species comprises a group of actual and potential biological organisms built according to a unique genome program that is recorded, and at least in part expressed, in the structures of their genomic nucleic acid molecule(s), having intragroup sequence differences which can be fully interconverted in the process of organismal reproduction.

  17. Long-term testing

    SciTech Connect (OSTI)

    Ferber, M.; Graves, G.A. Jr.

    1994-12-31T23:59:59.000Z

    Land-based gas turbines are significantly different from automotive gas turbines in that they are designed to operate for 50,000 h or greater (compared to 5,000--10,000 h). The primary goal of this research is to determine the long-term survivability of ceramic materials for industrial gas turbine applications. Research activities in this program focus on the evaluation of the static tensile creep and stress rupture (SR) behavior of three commercially available structural ceramics which have been identified by the gas turbine manufacturers as leading candidates for use in industrial gas turbines. For each material investigated, a minimum of three temperatures and four stresses will be used to establish the stress and temperature sensitivities of the creep and SR behavior. Because existing data for many candidate structural ceramics are limited to testing times less than 2,000 h, this program will focus on extending these data to times on the order of 10,000 h, which represents the lower limit of operating time anticipated for ceramic blades and vanes in gas turbine engines. A secondary goal of the program will be to investigate the possibility of enhancing life prediction estimates by combining interrupted tensile SR tests and tensile dynamic fatigue tests in which tensile strength is measured as a function of stressing rate. The third goal of this program will be to investigate the effects of water vapor upon the SR behavior of the three structural ceramics chosen for the static tensile studies by measuring the flexural strength as a function of stressing rate at three temperatures.

  18. Congestion pricing : policy dimensions, public rejection and impacts

    E-Print Network [OSTI]

    Chingcuanco, Franco (Franco Felipe)

    2014-01-01T23:59:59.000Z

    This thesis makes three related contributions to the broad literature on congestion pricing. First, it examines three policy dimensions that underlie pricing: the economic arguments that motivate it, the technological ...

  19. Wave propagation in periodic lattices with defects of smaller dimension

    E-Print Network [OSTI]

    A. A. Kutsenko

    2013-05-20T23:59:59.000Z

    The procedure of evaluating of the spectrum for discrete periodic operators perturbed by operators of smaller dimensions is obtained. This result allows to obtain propagative, guided, localised spectra for different kind of physical operators on graphs with defects.

  20. The Size of Compact Extra Dimensions from Blackbody Radiation Laws

    E-Print Network [OSTI]

    Ramaton Ramos; Henrique Boschi-Filho

    2014-04-28T23:59:59.000Z

    In this work we generalize the Stefan-Boltzmann and Wien's displacement laws for a $D$-dimensional manifold composed by 4 non-compact dimensions and $D-4$ compact dimensions, $ R^{1,3}$ x $T^{D-4} $. The electromagnetic field is assumed to pervade all compact and non-compact dimensions. In particular, the total radiated power becomes $ R(T) = \\sigma_B T^4 + \\sigma_D (a) \\, T^D $, where $a$ is the size of the compact extra dimensions. For $D=10$, predicted from String Theory, and $D=11$, from M-Theory, the outcomes agree with available experimental data for $a$ as high as 2 x $10^{-7}$m.

  1. STABILITY OF EQUILIBRIA IN ONE DIMENSION FOR DIBLOCK COPOLYMER EQUATION

    E-Print Network [OSTI]

    Sander, Evelyn

    STABILITY OF EQUILIBRIA IN ONE DIMENSION FOR DIBLOCK COPOLYMER EQUATION Olga Stulov Department for numerically. The various sets of the solutions of the linearized model were found by means of software AUTO

  2. The Higgs boson as a gauge field in extra dimensions

    E-Print Network [OSTI]

    Marco Serone

    2005-08-29T23:59:59.000Z

    I review, at a general non-technical level, the main properties of models in extra dimensions where the Higgs field is identified with some internal component of a gauge field.

  3. The N = 8 superconformal bootstrap in three dimensions

    E-Print Network [OSTI]

    Chester, Shai M.

    We analyze the constraints imposed by unitarity and crossing symmetry on the four-point function of the stress-tensor multiplet of N=8 superconformal field theories in three dimensions. We first derive the superconformal ...

  4. Constructive Dimension and Weak Truth-Table Degrees

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    infinite sequence S with construc- tive Hausdorff dimension dimH(S) and constructive packing dimension dimP(S. Furthermore, if dimP(S) > 0, then dimP(R) 1 - . The reduc- tion thus serves as a randomness extractor. It is also shown that, for any regular sequence S (that is, dimH(S) = dimP(S)) such that dimH(S) > 0, the wtt

  5. Multipole moments for black objects in five dimensions

    E-Print Network [OSTI]

    Kentaro Tanabe; Seiju Ohashi; Tetsuya Shiromizu

    2010-11-19T23:59:59.000Z

    In higher dimensions than four, conventional uniqueness theorem in asymptotically flat space-times does not hold, i.e., black objects can not be classified only by the mass, angular momentum and charge. In this paper, we define multipole moments for black objects and show that Myers-Perry black hole and black ring can be distinguished by quadrupole moments. This consideration gives us a new insight for the uniqueness theorem for black objects in higher dimensions.

  6. Cosmologically safe QCD axion as a present from extra dimension

    E-Print Network [OSTI]

    Kawasaki, Masahiro; Yanagida, Tsutomu T

    2015-01-01T23:59:59.000Z

    We propose a QCD axion model where the origin of PQ symmetry and suppression of axion isocurvature perturbations are explained by introducing an extra dimension. Each extra quark-antiquark pair lives on branes separately to suppress PQ breaking operators. The size of the extra dimension changes after inflation due to an interaction between inflaton and a bulk scalar field, which implies that the PQ symmetry can be drastically broken during inflation to suppress undesirable axion isocurvature fluctuations.

  7. Domain with Noncompactified Extra Dimensions in Multidimensional Universe with Compactified Extra Dimensions

    E-Print Network [OSTI]

    V. D. Dzhunushaliev

    1997-12-16T23:59:59.000Z

    It is supposed that in our Universe with compactified extra dimensions (ED) the domains exist with noncompactified ED. Such domain can be a wormhole-like solution in multidimensional gravity (MD), located between two null surfaces. With the availability of compactification mechanism this MD domain can be joined on null surfaces with two black holes filled by gauge field. Solution of this kind in MD gravity on the principal bundle with structural group SU(3) is obtained. This solution is wormhole-like object located between two null surfaces $ds^2=0$. In some sense these solutions are dual to black holes: they are statical spherically symmetric solutions under null surfaces whereas black holes are statical spherically symmetric solutions outside of event horizon.

  8. Fractal dimension of interstellar clouds: opacity and noise effects

    E-Print Network [OSTI]

    Nestor Sanchez; Emilio J. Alfaro; Enrique Perez

    2006-10-20T23:59:59.000Z

    There exists observational evidence that the interstellar medium has a fractal structure in a wide range of spatial scales. The measurement of the fractal dimension (Df) of interstellar clouds is a simple way to characterize this fractal structure, but several factors, both intrinsic to the clouds and to the observations, may contribute to affect the values obtained. In this work we study the effects that opacity and noise have on the determination of Df. We focus on two different fractal dimension estimators: the perimeter-area based dimension (Dper) and the mass-size dimension (Dm). We first use simulated fractal clouds to show that opacity does not affect the estimation of Dper. However, Dm tends to increase as opacity increases and this estimator fails when applied to optically thick regions. In addition, very noisy maps can seriously affect the estimation of both Dper and Dm, decreasing the final estimation of Df. We apply these methods to emission maps of Ophiuchus, Perseus and Orion molecular clouds in different molecular lines and we obtain that the fractal dimension is always in the range 2.6 2.3) average fractal dimension for the interstellar medium, as traced by different chemical species.

  9. Equivalence Relations Definition of a relation on a set

    E-Print Network [OSTI]

    Singman, David

    Equivalence Relations Definition of a relation on a set Let A be any set. Any subset have 1R1, 2R3, 3R1, 2 R2, 3 R2, etc. #12;A special kind of relation- an Equivalence relation There is a type of relation, it's known as an equivalence relation, which is particularly useful. Definition

  10. EXTENDING THE DEFINITION OF ENTROPY TO NONEQUILIBRIUM STEADY STATES.

    E-Print Network [OSTI]

    ## of #. Our definition is based on energy exchanged, uses the microscopic dynamics of the system, and agreesEXTENDING THE DEFINITION OF ENTROPY TO NONEQUILIBRIUM STEADY STATES. by David Ruelle* Abstract. We forces # and maintained at fixed kinetic energy (Hoover­Evans isokinetic thermostat). We assume

  11. Research Product 0-4186-P1 Definition of the

    E-Print Network [OSTI]

    Texas at Austin, University of

    Research Product 0-4186-P1 Definition of the "Cradle-to-Grave" Pavement Management Process Zhanmin in the definition given earlier, pavement management is in fact a process that starts from the conception-effective manner; it combines solid engi- neering principles with sound business practices and economic theory

  12. 1.0 Introduction 1.1 Definition of Nanotechnology

    E-Print Network [OSTI]

    1 1.0 Introduction 1.1 Definition of Nanotechnology Nanotechnology is the art and science improvements in technologies for protecting the environment. While many definitions for nanotechnology exist Nanotechnology Initiative (NNI), a U.S. Government research and development (R&D) program established

  13. HAUSDORFF DIMENSION, ANALYTIC SETS AND TRANSCENDENCE G. A. EDGAR AND CHRIS MILLER

    E-Print Network [OSTI]

    Edgar, Gerald

    HAUSDORFF DIMENSION, ANALYTIC SETS AND TRANSCENDENCE G. A. EDGAR any of* * Edgar [5], Falconer [7], Mattila [9] or [11] for details). From now on, "dimension

  14. Salvage HDR Brachytherapy for Recurrent Prostate Cancer After Previous Definitive Radiation Therapy: 5-Year Outcomes

    SciTech Connect (OSTI)

    Chen, Chien Peter [Department of Radiation Oncology, Scripps Clinic, San Diego, California (United States)] [Department of Radiation Oncology, Scripps Clinic, San Diego, California (United States); Weinberg, Vivian [Comprehensive Cancer Center Biostatistics Core, University of CaliforniaSan Francisco, San Francisco, California (United States)] [Comprehensive Cancer Center Biostatistics Core, University of CaliforniaSan Francisco, San Francisco, California (United States); Shinohara, Katsuto [Department of Urology, University of CaliforniaSan Francisco, San Francisco, California (United States)] [Department of Urology, University of CaliforniaSan Francisco, San Francisco, California (United States); Roach, Mack; Nash, Marc; Gottschalk, Alexander; Chang, Albert J. [Department of Radiation Oncology, University of CaliforniaSan Francisco, San Francisco, California (United States)] [Department of Radiation Oncology, University of CaliforniaSan Francisco, San Francisco, California (United States); Hsu, I-Chow, E-mail: IHsu@radonc.ucsf.edu [Department of Radiation Oncology, University of CaliforniaSan Francisco, San Francisco, California (United States)] [Department of Radiation Oncology, University of CaliforniaSan Francisco, San Francisco, California (United States)

    2013-06-01T23:59:59.000Z

    Purpose: Evaluate efficacy and toxicity of salvage high-dose-rate brachytherapy (HDRB) for locally recurrent prostate cancer after definitive radiation therapy (RT). Methods and Materials: We retrospectively analyzed 52 consecutively accrued patients undergoing salvage HDRB between 1998 and 2009 for locally recurrent prostate cancer after previous definitive RT. After pathologic confirmation of locally recurrent disease, patients received 36 Gy in 6 fractions. Twenty-four patients received neoadjuvant hormonal therapy before salvage, and no patients received adjuvant hormonal therapy. Determination of biochemical failure after salvage HDRB was based on the Phoenix definition. Overall survival (OS) and bF distributions were calculated using the Kaplan-Meier method. Univariate analyses were performed to identify predictors of biochemical control. Acute and late genitourinary (GU) and gastrointestinal (GI) toxicities, based on Common Terminology Criteria for Adverse Events (version 4), were documented. Results: Median follow-up after salvage HDRB was 59.6 months. The 5-year OS estimate was 92% (95% confidence interval [CI]: 80%-97%) with median survival not yet reached. Five-year biochemical control after salvage was 51% (95% CI: 34%-66%). Median PSA nadir postsalvage was 0.1 (range: 0-7.2) reached at a median of 10.2 months after completing HDRB. As for complications, acute and late grade 3 GU toxicities were observed in only 2% and 2%, respectively. No grade 2 or higher acute GI events and 4% grade 2 GI late events were observed. On univariate analysis, disease-free interval after initial definitive RT (P=.07), percent of positive cores at the time of diagnosis (P=.08), interval from first recurrence to salvage HDRB (P=.09), and pre-HDRB prostate-specific antigen (P=.07) were each of borderline significance in predicting biochemical control after salvage HDRB. Conclusions: Prostate HDRB is an effective salvage modality with relatively few long-term toxicities. We provide potential predictors of biochemical control for prostate salvage HDRB.

  15. First order theories for nonmonotone inductive definitions: recursively inaccessible and Mahlo

    E-Print Network [OSTI]

    Jäger, Gerhard

    First order theories for nonmonotone inductive definitions: recursively inaccessible and Mahlo Gerhard J¨ager Abstract In this paper first order theories for nonmonotone inductive definitions theories of) several specific nonmonotone inductive definitions which are interesting in the context

  16. President's Message: Mid Term Report

    E-Print Network [OSTI]

    Rodriguez, Robert

    2008-01-01T23:59:59.000Z

    NEWSLETTER Presidents Message Mid-Term Report What have wegoals outlined in my first message was to bolster membership

  17. National Biomedical Tracer Facility: Project definition study

    SciTech Connect (OSTI)

    Heaton, R.; Peterson, E. [Los Alamos National Lab., NM (United States); Smith, P. [Smith (P.A.) Concepts and Designs (United States)

    1995-05-31T23:59:59.000Z

    The Los Alamos National Laboratory is an ideal institution and New Mexico is an ideal location for siting the National Biomedical Tracer Facility (NBTF). The essence of the Los Alamos proposal is the development of two complementary irradiation facilities that combined with our existing radiochemical processing hot cell facilities and waste handling and disposal facilities provide a low cost alternative to other proposals that seek to satisfy the objectives of the NBTF. We propose the construction of a 30 MeV cyclotron facility at the site of the radiochemical facilities, and the construction of a 100 MeV target station at LAMPF to satisfy the requirements and objectives of the NBTF. We do not require any modifications to our existing radiochemical processing hot cell facilities or our waste treatment and disposal facilities to accomplish the objectives of the NBTF. The total capital cost for the facility defined by the project definition study is $15.2 M. This cost estimate includes $9.9 M for the cyclotron and associated facility, $2.0 M for the 100 MeV target station at LAMPF, and $3.3 M for design.

  18. Phase Space and Jet Definitions in SCET

    E-Print Network [OSTI]

    William Man-Yin Cheung; Michael Luke; Saba Zuberi

    2009-10-13T23:59:59.000Z

    We discuss consistent power counting for integrating soft and collinear degrees of freedom over arbitrary regions of phase space in the soft-collinear effective theory (SCET), and illustrate our results at one loop with several jet algorithms: JADE, Sterman-Weinberg and k_T. Consistently applying SCET power-counting in phase space, along with non-trivial zero-bin subtractions, prevents double-counting of final states. The resulting phase-space integrals over soft and collinear regions are individually ultraviolet divergent, but the phase-space ultraviolet divergences cancel in the sum. Whether the soft and collinear contributions are individually infrared safe depends on the jet definition. We show that while this is true at one loop for JADE and Sterman-Weinberg, the k_T algorithm does not factorize into individually infrared safe soft and collinear pieces in dimensional regularization. We point out that this statement depends on the ultraviolet regulator, and that in a cutoff scheme the soft functions are infrared safe.

  19. Multi-element probabilistic collocation method in high dimensions

    SciTech Connect (OSTI)

    Foo, Jasmine [Division of Applied Mathematics, Brown University, 182 George St., Box F, Providence, RI 02912 (United States); Karniadakis, George Em [Division of Applied Mathematics, Brown University, 182 George St., Box F, Providence, RI 02912 (United States)], E-mail: gk@dam.brown.edu

    2010-03-01T23:59:59.000Z

    We combine multi-element polynomial chaos with analysis of variance (ANOVA) functional decomposition to enhance the convergence rate of polynomial chaos in high dimensions and in problems with low stochastic regularity. Specifically, we employ the multi-element probabilistic collocation method MEPCM and so we refer to the new method as MEPCM-A. We investigate the dependence of the convergence of MEPCM-A on two decomposition parameters, the polynomial order {mu} and the effective dimension {nu}, with {nu}<dimension. Numerical tests for multi-dimensional integration and for stochastic elliptic problems suggest that {nu}{>=}{mu} for monotonic convergence of the method. We also employ MEPCM-A to obtain error bars for the piezometric head at the Hanford nuclear waste site under stochastic hydraulic conductivity conditions. Finally, we compare the cost of MEPCM-A against Monte Carlo in several hundred dimensions, and we find MEPCM-A to be more efficient for up to 600 dimensions for a specific multi-dimensional integration problem involving a discontinuous function.

  20. Mass Generation and Related Issues from Exotic Higher Dimensions

    E-Print Network [OSTI]

    Rojas, M; Colatto, L P; Matheus-Valle, J L; De Assis, L P G; Helayel-Neto, J A

    2011-01-01T23:59:59.000Z

    The main purpose of this work is to show that massless Dirac equation formulated for non-interacting Majorana-Weyl spinors in higher dimensions, particularly in D=1+9 and D=5+5, can lead to an interpretation of massive Majorana and Dirac spinors in D=1+3. By adopting suitable representations of the Dirac matrices in higher dimensions, we pursue the investigation of which higher dimensional space-times and which mass-shell relation concerning massless Dirac equations in higher dimensions may induce massive spinors in D=1+3. The mixing of the chiral fermions in higher dimensions may induce a mechanism such that four massive Majorana fermions may show up and, at an appropriate limit an almost zero and a huge mass show up with corresponding left-handed and right-handed eigenstates. This mechanism, in a peculiar way, could reassess the See-Saw scheme associated to neutrino with Majorana-type masses. Remarkably the masses of the particles are fixed by the dimension decoupling/reduction scheme based on the mass Lore...

  1. Long-term environmental stewardship.

    SciTech Connect (OSTI)

    Nagy, Michael David

    2010-08-01T23:59:59.000Z

    The purpose of this Supplemental Information Source Document is to effectively describe Long-Term Environmental Stewardship (LTES) at Sandia National Laboratories/New Mexico (SNL/NM). More specifically, this document describes the LTES and Long-Term Stewardship (LTS) Programs, distinguishes between the LTES and LTS Programs, and summarizes the current status of the Environmental Restoration (ER) Project.

  2. TASI Lectures on Supergravity and String Vacua in Various Dimensions

    E-Print Network [OSTI]

    Washington Taylor

    2011-04-14T23:59:59.000Z

    These lectures aim to provide a global picture of the spaces of consistent quantum supergravity theories and string vacua in higher dimensions. The lectures focus on theories in the even dimensions 10, 8, and 6. Supersymmetry, along with with anomaly cancellation and other quantum constraints, places strong limitations on the set of physical theories which can be consistently coupled to gravity in higher-dimensional space-times. As the dimensionality of space-time decreases, the range of possible supergravity theories and the set of known string vacuum constructions expand. These lectures develop the basic technology for describing a variety of string vacua, including heterotic, intersecting brane, and F-theory compactifications. In particular, a systematic presentation is given of the basic elements of F-theory. In each dimension, we summarize the current state of knowledge regarding the extent to which supergravity theories not realized in string theory can be shown to be inconsistent.

  3. On the selection of dimension reduction techniques for scientific applications

    SciTech Connect (OSTI)

    Fan, Y J; Kamath, C

    2012-02-17T23:59:59.000Z

    Many dimension reduction methods have been proposed to discover the intrinsic, lower dimensional structure of a high-dimensional dataset. However, determining critical features in datasets that consist of a large number of features is still a challenge. In this paper, through a series of carefully designed experiments on real-world datasets, we investigate the performance of different dimension reduction techniques, ranging from feature subset selection to methods that transform the features into a lower dimensional space. We also discuss methods that calculate the intrinsic dimensionality of a dataset in order to understand the reduced dimension. Using several evaluation strategies, we show how these different methods can provide useful insights into the data. These comparisons enable us to provide guidance to a user on the selection of a technique for their dataset.

  4. Fermions in odd space-time dimensions: back to basics

    E-Print Network [OSTI]

    Bashir, A; Galicia, Ma. de Jesus Anguiano

    2005-01-01T23:59:59.000Z

    It is a well known feature of odd space-time dimensions $d$ that there exist two inequivalent fundamental representations $A$ and $B$ of the Dirac gamma matrices. Moreover, the parity transformation swaps the fermion fields living in $A$ and $B$. As a consequence, a parity invariant Lagrangian can only be constructed by incorporating both the representations. Based upon these ideas and contrary to long held belief, we show that in addition to a discrete exchange symmetry for the massless case, we can also define chiral symmetry provided the Lagrangian contains fields corresponding to both the inequivalent representations. We also study the transformation properties of the corresponding chiral currents under parity and charge conjugation operations. We work explicitly in 2+1 dimensions and later show how some of these ideas generalize to an arbitrary number of odd dimensions.

  5. Fermions in odd space-time dimensions: back to basics

    E-Print Network [OSTI]

    A. Bashir; Ma. de Jesus Anguiano Galicia

    2005-02-09T23:59:59.000Z

    It is a well known feature of odd space-time dimensions $d$ that there exist two inequivalent fundamental representations $A$ and $B$ of the Dirac gamma matrices. Moreover, the parity transformation swaps the fermion fields living in $A$ and $B$. As a consequence, a parity invariant Lagrangian can only be constructed by incorporating both the representations. Based upon these ideas and contrary to long held belief, we show that in addition to a discrete exchange symmetry for the massless case, we can also define chiral symmetry provided the Lagrangian contains fields corresponding to both the inequivalent representations. We also study the transformation properties of the corresponding chiral currents under parity and charge conjugation operations. We work explicitly in 2+1 dimensions and later show how some of these ideas generalize to an arbitrary number of odd dimensions.

  6. Probing Large Extra Dimensions With IceCube

    E-Print Network [OSTI]

    Arman Esmaili; O. L. G. Peres; Zahra Tabrizi

    2014-12-02T23:59:59.000Z

    In models with Large Extra Dimensions the smallness of neutrino masses can be naturally explained by introducing gauge singlet fermions which propagate in the bulk. The Kaluza-Klein modes of these fermions appear as towers of sterile neutrino states on the brane. We study the phenomenological consequences of this picture for the high energy atmospheric neutrinos. For this purpose we construct a detailed equivalence between a model with large extra dimensions and a (3 + n) scenario consisting of three active and n extra sterile neutrino states, which provides a clear intuitive understanding of Kaluza-Klein modes. Finally, we analyze the collected data of high energy atmospheric neutrinos by IceCube experiment and obtain bounds on the radius of extra dimensions.

  7. Dark Energy from Casimir Energy on Noncommutative Extra Dimensions

    E-Print Network [OSTI]

    S. Fabi; B. Harms; G. Karatheodoris

    2006-07-20T23:59:59.000Z

    We study the possibility that dark energy is a manifestation of the Casimir energy on extra dimensions with the topology of $S^2$. We consider our universe to be $M^4 \\times S^2$ and modify the geometry by introducing noncommutativity on the extra dimensions only, i.e. replacing $S^2$ with the fuzzy version $S_{F}^2$. We find the energy density as a function of the size of the representation $M+1$ of the algebra of $S_{F}^2$, and we calculate its value for the $M+1=2$ case. The value of the energy density turns out to be positive, i.e. provides dark energy, and the size of the extra dimensions agrees with the experimental limit. We also recover the correct commutative limit as the noncommutative parameter goes to zero.

  8. RECURRENCE, DIMENSION AND ENTROPY AI-HUA FAN, DE-JUN FENG AND JUN WU

    E-Print Network [OSTI]

    Fan, Ai-Hua

    about the Hausdorff dimension dimH , the packing dimension dimP and the upper box dimension dimB (see [8 setting, topological entropy is related to dimension by 1 log m htop (E()) l dimH (E()) l dimP (E

  9. A Critical "Dimension" in a Shell Model for Turbulence

    E-Print Network [OSTI]

    Paolo Giuliani; Mogens H. Jensen; Victor Yakhot

    2001-02-08T23:59:59.000Z

    We investigate the GOY shell model within the scenario of a critical dimension in fully developed turbulence. By changing the conserved quantities, one can continuously vary an ``effective dimension'' between $d=2$ and $d=3$. We identify a critical point between these two situations where the flux of energy changes sign and the helicity flux diverges. Close to the critical point the energy spectrum exhibits a turbulent scaling regime followed by a plateau of thermal equilibrium. We identify scaling laws and perform a rescaling argument to derive a relation between the critical exponents. We further discuss the distribution function of the energy flux.

  10. Bulk torsion fields in theories with large extra dimensions

    E-Print Network [OSTI]

    Biswarup Mukhopadhyaya; Somasri Sen; Soumitra SenGupta

    2002-04-25T23:59:59.000Z

    We study the consequences of spacetime torsion coexisting with gravity in the bulk in scenarios with large extra dimensions. Having linked torsion with the Kalb-Ramond antisymmetric tensor field arising in string theories, we examine its artifacts on the visible 3-brane when the extra dimensions are compactified. It is found that while torsion would have led to parity violation in a 4-dimensional framework, all parity violating effects disappear on the visible brane when the torsion originates in the bulk. However, such a scenario is found to have characteristics of its own, some of which can be phenomenologically significant.

  11. Fractal dimension analysis in a highly granular calorimeter

    E-Print Network [OSTI]

    Ruan, M; Brient, J.C; Jeans, D; Videau, H

    2015-01-01T23:59:59.000Z

    The concept of particle flow has been developed to optimise the jet energy resolution by distinguishing the different jet components. A highly granular calorimeter designed for the particle flow algorithm provides an unprecedented level of detail for the reconstruction of calorimeter showers and enables new approaches to shower analysis. In this paper the measurement and use of the fractal dimension of showers is described. The fractal dimension is a characteristic number that measures the global compactness of the shower. It is highly dependent on the primary particle type and energy. Its application in identifying particles and estimating their energy is described in the context of a calorimeter designed for the International Linear Collider.

  12. Investigating the maintenance of the mouse definitive adrenal cortex

    E-Print Network [OSTI]

    Zhao, Xin

    2013-11-29T23:59:59.000Z

    and Cyp11b1 that encode the enzymes aldosterone synthase and 11?-hydroxylase, which catalyze the terminal reactions in the production of aldosterone and corticosterone, respectively. This thesis aims to investigate the maintenance of the definitive mouse...

  13. The Web Services Vision Definition of Web Services

    E-Print Network [OSTI]

    Cheverst, Keith

    1 The Web Services Vision Overview Definition of Web Services Key concepts Difference from traditional web model Context Service-oriented architecture Distributed computing Overview Microsoft .NET vision Web Services Difference from traditional web model Context Service-oriented architecture

  14. California PRC Section 21065.5, Definitions for Geothermal Exploratory...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: California PRC Section 21065.5, Definitions for Geothermal Exploratory ProjectLegal Abstract...

  15. Towards Automatic Extraction of Definitions Claudia Borg1

    E-Print Network [OSTI]

    Pace, Gordon J.

    Department of Artificial Intelligence, University of Malta 2 Department of Computer Science, University of Malta {claudia.borg|mike.rosner|gordon.pace}@um.edu.mt Abstract. Definition extraction can be useful

  16. The fundamental theorem of Galois theory Definition 1. A polynomial ...

    E-Print Network [OSTI]

    2011-11-14T23:59:59.000Z

    The fundamental theorem of Galois theory. Definition 1. A polynomial in K[X] (K a field) is separable if it has no multiple roots in any field containing K. An...

  17. Double Shell Tank (DST) Process Waste Sampling Subsystem Definition Report

    SciTech Connect (OSTI)

    RASMUSSEN, J.H.

    2000-04-25T23:59:59.000Z

    This report defines the Double-Shell Tank (DST) Process Waste Sampling Subsystem (PWSS). This subsystem definition report fully describes and identifies the system boundaries of the PWSS. This definition provides a basis for developing functional, performance, and test requirements (i.e., subsystem specification), as necessary, for the PWSS. The resultant PWSS specification will include the sampling requirements to support the transfer of waste from the DSTs to the Privatization Contractor during Phase 1 of Waste Feed Delivery.

  18. Loan Terms | 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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy andTerms Loan Terms The following terms are

  19. Analysis, Dimensioning and Robust Control of Shunt Active Filter for Harmonic Currents Compensation in Electrical Mains

    E-Print Network [OSTI]

    Tilli, Andrea; Conficoni, Christian

    2011-01-01T23:59:59.000Z

    In this chapter some results related to Shunt Active Filters (SAFs) and obtained by the authors and some coauthors are reported. SAFs are complex power electronics equipments adopted to compensate for cur-rent harmonic pollution in electric mains, due to nonlinear loads. By using a proper "floating" capacitor as energy reservoir, the SAF purpose is to inject in the line grid currents canceling the polluting har-monics. Control algorithms play a key role for such devices and, in general, in many power electronics applications. Moreover, systems theory is crucial, since it is the mathematical tool that enables a deep understanding of the involved dynamics of such systems, allowing a correct dimensioning, beside an effective control. As a matter of facts, current injection objective can be straightforwardly formulated as an output tracking control problem. In this fashion, the structural and insidious marginally-stable internal/zero dynamics of SAFs can be immediately highlighted and characterized in terms of si...

  20. Short-Term Energy Outlook

    U.S. Energy Information Administration (EIA) Indexed Site

    Chart Gallery for April 2015 Short-Term Energy Outlook U.S. Energy Information Administration Independent Statistics & Analysis 0 20 40 60 80 100 120 140 160 180 200 220 Jan 2014...

  1. Calendar Year study term 1

    E-Print Network [OSTI]

    Dawson, Jeff W.

    laboratory and research facilities Carleton's laboratory and computer facilities are unparalleled association with, government organizations such as the National Research Council Canada. Your co Study Term 5 Dynamics of Machinery Mechanics of Solids II Systems and Simulation Electrical

  2. Short-Term Energy Outlook

    Gasoline and Diesel Fuel Update (EIA)

    day Forecast -1.0 2012 2013 2014 OPEC countries North America Russia and Caspian Sea Latin America North Sea Other Non-OPEC Source: Short-Term Energy Outlook, November 2013 -1 0...

  3. Yang-Mills like instantons in eight and seven dimensions

    E-Print Network [OSTI]

    E. K. Loginov; E. D. Loginova

    2014-10-10T23:59:59.000Z

    We consider a gauge theory in which a nonassociative Moufang loop takes the place of a structure group. We construct Belavin-Polyakov-Schwartz-Tyupkin (BPST) and t'Hooft like instanton solutions of the gauge theory in seven and eight dimensions.

  4. Fractal dimension and turbulence in Giant HII Regions

    E-Print Network [OSTI]

    Caicedo-Ortiz, H E; Lpez-Bonilla, J; Castaeda, H O

    2015-01-01T23:59:59.000Z

    We have measured the fractal dimensions of the Giant HII Regions Hubble X and Hubble V in NGC6822 using images obtained with the Hubble's Wide Field Planetary Camera 2 (WFPC2). These measures are associated with the turbulence observed in these regions, which is quantified through the velocity dispersion of emission lines in the visible. Our results suggest low turbulence behaviour.

  5. Power: The New Dimension of Test Patrick GIRARD

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Power: The New Dimension of Test Patrick GIRARD WRTLT 2008WRTLT 2008 ­­ SapporoSapporo -- Japan;2 1. Relevance of power during test 2. Main test power issues 3. Reducing test power by dedicated techniques 4. Low Power Design and its implications on test 5. One step to the future Outline lirmm-00820640

  6. The Post Anachronism: The Temporal Dimension of Facebook Privacy

    E-Print Network [OSTI]

    Reiter, Michael

    The Post Anachronism: The Temporal Dimension of Facebook Privacy Lujo Bauer , Lorrie Faith Cranor the audience and emphasis of Facebook posts change over time. In a 63-participant longitudinal study, par- ticipants gave their audience and emphasis preferences for up to ten of their Facebook posts in the week

  7. Independent Control of Multiple Magnetic Microrobots in Three Dimensions

    E-Print Network [OSTI]

    Sitti, Metin

    Independent Control of Multiple Magnetic Microrobots in Three Dimensions Eric Diller, Joshua method to independently control multiple sub-mm microrobots in three dimen- sions (3D) using magnetic of geometrically or magnetically distinct microrobots which assume different magnetization directions in a rotating

  8. The Equivalence Principle as a Probe for Higher Dimensions

    E-Print Network [OSTI]

    Paul S. Wesson

    2006-01-17T23:59:59.000Z

    Higher-dimensional theories of the kind which may unify gravitation with particle physics can lead to significant modifications of general relativity. In five dimensions, the vacuum becomes non-standard, and the Weak Equivalence Principle becomes a geometrical symmetry which can be broken, perhaps at a level detectable by new tests in space.

  9. Looking into Higher Dimensions: Research with Joseph McMoneagle

    E-Print Network [OSTI]

    Bryan, Ronald

    by nuclear reactors can travel as far as 25 light- years in solid lead before being deflected. Another at nuclear distances, and see into higher dimensions. To "calibrate" McMoneagle, I asked him three things (in, if not the best: Joseph McMoneagle. [Joe has published four interesting and informative books on remote viewing

  10. PACKING DIMENSION RESULTS FOR ANISOTROPIC GAUSSIAN RANDOM FIELDS

    E-Print Network [OSTI]

    Xiao, Yimin

    and GrX [0, 1]N are determined by the lower index of . Namely, dimP X [0, 1]N = min d, N , a.s. (1.5) and dimP GrX [0, 1]N = min N , N + (1 - )d , a.s., (1.6) where dimP E denotes the packing dimension of E

  11. PACKING DIMENSION RESULTS FOR ANISOTROPIC GAUSSIAN RANDOM FIELDS

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    by the lower index of . Namely, dimP X [0, 1]N = min d, N , a.s. (1.5) and dimP GrX [0, 1]N = min N , N + (1 - )d , a.s., (1.6) where dimP E denotes the packing dimension o

  12. Dimensioning hospital wards using the Erlang loss model Corresponding author

    E-Print Network [OSTI]

    -2006. Finally, we demonstrate the efficiency of merging departments. Keywords: hospital resource allocationDimensioning hospital wards using the Erlang loss model Corresponding author: A.M. de Bruin (MSc of Sciences Department of Mathematics Assistant professor Optimization of Business Processes L. van Zanten

  13. Upper bounds for multiphase composites in any dimension

    E-Print Network [OSTI]

    Luis Silvestre

    2010-10-12T23:59:59.000Z

    We prove a rigorous upper bound for the effective conductivity of an isotropic composite made of several isotropic components in any dimension. This upper bound coincides with the Hashin Shtrikman bound when the volume ratio of all phases but any two vanish.

  14. Top-kkk Preferences in High Dimensions Duke University

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    Top-kkk Preferences in High Dimensions Albert Yu Duke University syu@cs.duke.edu Pankaj K. Agarwal applications, users are interested only in a small num- ber (say, k) of "top" objects from a large set on preference top-k queries [9, 12, 13, 23, 38]. Motivated by applications in business analysis, Vlachou et al

  15. Favors from Facebook Friends: Unpacking Dimensions of Social Capital

    E-Print Network [OSTI]

    Michigan, University of

    capital [5, 14, 19]. Social capital is a conceptual framework that considers the resources held by thoseFavors from Facebook Friends: Unpacking Dimensions of Social Capital Yumi Jung, Rebecca Gray]@umich.edu ABSTRACT Past research has demonstrated a link between perceptions of social capital and use of the popular

  16. IEEE TRANSACTIONS ON IMAGE PROCESSING 1 Determining the Intrinsic Dimension

    E-Print Network [OSTI]

    Damelin, Steven

    chemical unmixing [1], extracting speech signals in a noisy line [2], unmixing minerals [3] and unmixingIEEEProof IEEE TRANSACTIONS ON IMAGE PROCESSING 1 Determining the Intrinsic Dimension is an important step in the spectral unmixing process and under- or overestimation of this number may lead

  17. The 5th Dimension: Building Blocks for Smart Infrastructures

    E-Print Network [OSTI]

    artifact. Obviously, since the books only pass the energy field of the reader for a few seconds, any formThe 5th Dimension: Building Blocks for Smart Infrastructures Marc Langheinrich ETH Zurich Institute example of such an interaction in 5D would be the following scenario: two "smart" (i.e., tagged) books

  18. Biocompatible Force Sensor with Optical Readout and Dimensions of

    E-Print Network [OSTI]

    Straight, Aaron

    Biocompatible Force Sensor with Optical Readout and Dimensions of 6 nm3 Hari Shroff,, Bjo1rn M Received June 6, 2005 ABSTRACT We have developed a nanoscopic force sensor with optical readout. The sensor energy transfer. The sensor was calibrated between 0 and 20 pN using a combined magnetic tweezers

  19. Singularity free stars in (2+1) dimensions

    E-Print Network [OSTI]

    Farook Rahaman; Ayan Banerjee; Irina Radinschi; Sumita Banerjee; Soumendranath Ruz

    2012-10-23T23:59:59.000Z

    We present some new types of non-singular model for anisotropic stars with constant $\\Lambda $ and variable $\\Lambda$ based on the Krori and Barua (KB) metric in $(2+1)$ dimensions. The solutions obtained here satisfy all the regularity conditions and its simple analytical form helps us to study the various physical properties of the configuration.

  20. PRIMITIVE ALGEBRAS WITH ARBITRARY GELFAND-KIRILLOV DIMENSION

    E-Print Network [OSTI]

    Vishne, Uzi

    (1), (1999), 151-158 1. Preliminaries Let A be an affine k-algebra. The Gelfand-Kirillov dimension [6 A is finite dimensional. Otherwise GKdim(A) 1, and by Bergman's gap theorem [3], ei- ther GKdim(A) = 1 (in

  1. A procedure to Estimate the Fractal Dimension of Waveforms

    E-Print Network [OSTI]

    Carlos Sevcik

    2010-03-27T23:59:59.000Z

    A method is described for calculating the approximate fractal dimension from a set of N values y sampled from a waveform between time zero and t. The waveform was subjected to a double linear transformation that maps it into a unit square.

  2. Quantum Gravity in Three Dimensions from Higher-Spin Holography

    E-Print Network [OSTI]

    Tan, Hai Siong

    2013-01-01T23:59:59.000Z

    Higher Spin Anti-de Sitter Gravity, JHEP 1012, 007 (2010)gravity in three dimensions from the per- spective of higher-spin holography in anti-gravity in three dimen- sions in the framework of higher-spin holography in anti-

  3. DIMENSIONS OF DISTRIBUTED LEADERSHIP IN THE SME CONTEXT

    E-Print Network [OSTI]

    Mottram, Nigel

    1 DIMENSIONS OF DISTRIBUTED LEADERSHIP IN THE SME CONTEXT Steve Kempster*, Jason Cope** and Ken IN THE SME CONTEXT Abstract. Entrepreneurial ventures are led as effectively by small teams as by individuals individual leadership within the SME context. The overlap between heroic individual leadership

  4. MODELLING THE ONSET OF DYNAMIC Importance of the Vertical Dimension

    E-Print Network [OSTI]

    Johansen, Tom Henning

    block models of an elastic slider under dry friction. I apply AmontonsCoulomb friction at the block levelMODELLING THE ONSET OF DYNAMIC FRICTION Importance of the Vertical Dimension by JRGEN TRMBORG of the onset of dynamic friction. Optical methods give access to the sliding interface before and during

  5. Sliced Coordinate Analysis for Effective Dimension Reduction and Nonlinear Extensions

    E-Print Network [OSTI]

    Kwok, James Tin-Yau

    regression; Re- producing kernels. 1. INTRODUCTION The notion of effective dimension reduction (EDR, Li 1991 for estimating the EDR space. Unlike principal component regression, which first applies principal component of an input vector by regressing the input vector against the corresponding output to form an EDR space

  6. DISORDERED BOSE EINSTEIN CONDENSATES WITH INTERACTION IN ONE DIMENSION

    E-Print Network [OSTI]

    Boyer, Edmond

    DISORDERED BOSE EINSTEIN CONDENSATES WITH INTERACTION IN ONE DIMENSION ROBERT SEIRINGER, JAKOB- Pitaevskii regime. We prove that Bose Einstein condensation survives even a strong random potential with a high density of scatterers. The character of the wave func- tion of the condensate, however, depends

  7. Liquid pair correlations in four spatial dimensions: Theory versus simulation

    E-Print Network [OSTI]

    M. Heinen; J. Horbach; H. Lwen

    2014-11-06T23:59:59.000Z

    Using liquid integral equation theory, we calculate the pair correlations of particles that interact via a smooth repulsive pair potential in d = 4 spatial dimensions. We discuss the performance of different closures for the Ornstein-Zernike equation, by comparing the results to computer simulation data. Our results are of relevance to understand crystal and glass formation in high-dimensional systems.

  8. 0.0.1 Saturated models What follows is the main definition of model theory.

    E-Print Network [OSTI]

    0.0.1 Saturated models What follows is the main definition of model theory. Definition: Let x's an algebraically closed field. It's also 1-saturated. Understanding a theory is understanding its types. Definition there is only 1 variable.) However, there is clearly no element satisfying these statements in N. Definition

  9. Term statistics Zipf's law text statistics

    E-Print Network [OSTI]

    Lu, Jianguo

    Term statistics Zipf's law text statistics October 20, 2014 text statistics 1 / 19 #12;Term statistics Zipf's law Overview 1 Term statistics 2 Zipf's law text statistics 2 / 19 #12;Term statistics Zipf's law Outline 1 Term statistics 2 Zipf's law text statistics 3 / 19 #12;Term statistics Zipf's law Model

  10. Definition of Terms Part 772page 1 Export Administration Regulations Bureau of Industry and Security July 16, 2013

    E-Print Network [OSTI]

    "Airship"..........................6 "All compensations available" .........................6 "Allocated

  11. Long-Term Stewardship Study

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy andTerms Loan TermsLong Island HTSand

  12. RG flows from $(1,0)$ 6D SCFTs to $N=1$ SCFTs in four and three dimensions

    E-Print Network [OSTI]

    Karndumri, Parinya

    2015-01-01T23:59:59.000Z

    We study $AdS_5\\times \\Sigma_2$ and $AdS_4\\times \\Sigma_3$ solutions of $N=2$, $SO(4)$ gauged supergravity in seven dimensions with $\\Sigma_{2,3}$ being $S^{2,3}$ or $H^{2,3}$. The $SO(4)$ gauged supergravity is obtained from coupling three vector multiplets to the pure $N=2$, $SU(2)$ gauged supergravity. With a topological mass term for the 3-form field, the $SO(4)\\sim SU(2)\\times SU(2)$ gauged supergravity admits two supersymmetric $AdS_7$ critical points, with $SO(4)$ and $SO(3)$ symmetries, provided that the two gauge couplings for the two $SU(2)$'s are different. These solutions correspond to $N=(1,0)$ superconformal field theories (SCFTs) in six dimensions. In the case of $\\Sigma_2$, we find a class of $AdS_5\\times S^2$ and $AdS_5\\times H^2$ solutions preserving eight supercharges and $SO(2)\\times SO(2)$ or $SO(2)$ symmetries. These should correspond to some $N=1$ four-dimensional SCFTs. We also give RG flow solutions from the $N=(1,0)$ SCFT in six dimensions to these four-dimensional fixed points inclu...

  13. Efficient Cluster Algorithm for Spin Glasses in Any Space Dimension

    E-Print Network [OSTI]

    Zheng Zhu; Andrew J. Ochoa; Helmut G. Katzgraber

    2015-01-22T23:59:59.000Z

    Spin systems with frustration and disorder are notoriously difficult to study both analytically and numerically. While the simulation of ferromagnetic statistical mechanical models benefits greatly from cluster algorithms, these accelerated dynamics methods remain elusive for generic spin-glass-like systems. Here we present a cluster algorithm for Ising spin glasses that works in any space dimension and speeds up thermalization by several orders of magnitude at temperatures where thermalization is typically difficult. Our isoenergetic cluster moves are based on the Houdayer cluster algorithm for two-dimensional spin glasses and lead to a speedup over conventional state-of-the-art methods that increases with the system size. We illustrate the benefits of the isoenergetic cluster moves in two and three space dimensions, as well as the nonplanar Chimera topology found in the D-Wave quantum annealing machine.

  14. Perturbative c-theorem in d-dimensions

    E-Print Network [OSTI]

    Kazuya Yonekura

    2013-01-15T23:59:59.000Z

    We study perturbative behavior of free energies on a d-dimensional sphere S^d for theories with marginal interactions. The free energies are interpreted as the "dilaton effective action" with the dilaton having a nontrivial background vacuum expectation value. We compute the dependence of the free energies on the radius of the sphere by using dimensional regularization. It is shown that the first (second) derivative of the free energies in odd (even) dimensions with respect to the radius of the sphere are proportional to the square of the beta functions of coupling constants. The result is consistent with the c, F and a-theorems in two, three, four and six dimensions. The result is also used to rule out a large class of scale invariant theories which are not conformally invariant.

  15. Borromean ground state of fermions in two dimensions

    E-Print Network [OSTI]

    A. G. Volosniev; D. V. Fedorov; A. S. Jensen; N. T. Zinner

    2014-08-29T23:59:59.000Z

    The study of quantum mechanical bound states is as old as quantum theory itself. Yet, it took many years to realize that three-body borromean systems that are bound when any two-body subsystem is unbound are abundant in nature. Here we demonstrate the existence of borromean systems of spin-polarized (spinless) identical fermions in two spatial dimensions. The ground state with zero orbital (planar) angular momentum exists in a borromean window between critical two- and three-body strengths. The doubly degenerate first excited states of angular momentum one appears only very close to the two-body threshold. They are the lowest in a possible sequence of so-called super-Efimov states. While the observation of the super-Efimov scaling could be very difficult, the borromean ground state should be observable in cold atomic gases and could be the basis for producing a quantum gas of three-body states in two dimensions.

  16. Stable heteronuclear few-atom bound states in mixed dimensions

    SciTech Connect (OSTI)

    Yin Tao; Zhang Peng; Zhang Wei [Department of Physics, Renmin University of China, Beijing 100872 (China)

    2011-11-15T23:59:59.000Z

    We study few-body problems in mixed dimensions where two or three heavy atoms are trapped individually in parallel one-dimensional tubes or two-dimensional disks and a single light atom travels freely in three dimensions. Using the Born-Oppenheimer approximation, we find three- and four-body bound states for a broad parameter region. Specifically, the existence of trimer and tetramer states persists to the negative scattering length regime, where no two-body bound state is present. As pointed out by Y. Nishida in an earlier work [Phys. Rev. A 82, 011605(R) (2010)], these few-body bound states are stable against three-body recombination due to geometric separation. In addition, we find that the binding energy of the ground trimer and tetramer state reaches its maximum value when the scattering lengths are comparable to the separation between the low-dimensional traps.

  17. The Fractal Dimension of the Spectrum of the Fibonacci Hamiltonian

    E-Print Network [OSTI]

    David Damanik; Mark Embree; Anton Gorodetski; Serguei Tcheremchantsev

    2007-05-02T23:59:59.000Z

    We study the spectrum of the Fibonacci Hamiltonian and prove upper and lower bounds for its fractal dimension in the large coupling regime. These bounds show that as $\\lambda \\to \\infty$, $\\dim (\\sigma(H_\\lambda)) \\cdot \\log \\lambda$ converges to an explicit constant ($\\approx 0.88137$). We also discuss consequences of these results for the rate of propagation of a wavepacket that evolves according to Schr\\"odinger dynamics generated by the Fibonacci Hamiltonian.

  18. Fractal Zeta Functions and Complex Dimensions of Relative Fractal Drums

    E-Print Network [OSTI]

    Michel L. Lapidus; Goran Radunovi?; Darko ubrini?

    2014-11-17T23:59:59.000Z

    The theory of 'zeta functions of fractal strings' has been initiated by the first author in the early 1990s, and developed jointly with his collaborators during almost two decades of intensive research in numerous articles and several monographs. In 2009, the same author introduced a new class of zeta functions, called `distance zeta functions', which since then, has enabled us to extend the existing theory of zeta functions of fractal strings and sprays to arbitrary bounded (fractal) sets in Euclidean spaces of any dimension. A natural and closely related tool for the study of distance zeta functions is the class of 'tube zeta functions', defined using the tube function of a fractal set. These three classes of zeta functions, under the name of 'fractal zeta functions', exhibit deep connections with Minkowski contents and upper box dimensions, as well as, more generally, with the complex dimensions of fractal sets. Further extensions include zeta functions of relative fractal drums, the box dimension of which can assume negative values, including minus infinity. We also survey some results concerning the existence of the meromorphic extensions of the spectral zeta functions of fractal drums, based in an essential way on earlier results of the first author on the spectral (or eigenvalue) asymptotics of fractal drums. It follows from these results that the associated spectral zeta function has a (nontrivial) meromorphic extension, and we use some of our results about fractal zeta functions to show the new fact according to which the upper bound obtained for the corresponding abscissa of meromorphic convergence is optimal. Finally, we conclude this survey article by proposing several open problems and directions for future research in this area.

  19. PACKING-DIMENSION PROFILES AND FRACTIONAL BROWNIAN MOTION

    E-Print Network [OSTI]

    Khoshnevisan, Davar

    analytic set E RN and every integer 1 m N, (1.1) dimP (PV E) = DimmE for n,m-almost all V Gn,m, Date is the packing dimension dimP E. The principle aim of this note is to prove that (1.2) holds for all real numbers, 1985, Chapter 18). Xiao (1997) proved that for every analytic set E RN , (1.3) dimP X(E) = 1 H Dim

  20. Auto-Concealment of Supersymmetry in Extra Dimensions

    E-Print Network [OSTI]

    Savas Dimopoulos; Kiel Howe; John March-Russell; James Scoville

    2014-12-02T23:59:59.000Z

    In supersymmetric (SUSY) theories with extra dimensions the visible energy in sparticle decays can be significantly reduced and its energy distribution broadened, thus significantly weakening the present collider limits on SUSY. The mechanism applies when the lightest supersymmetric particle (LSP) is a bulk state-- e.g. a bulk modulino, axino, or gravitino-- the size of the extra dimensions larger than ~$10^{-14}$ cm, and for a broad variety of visible sparticle spectra. In such cases the lightest ordinary supersymmetric particle (LOSP), necessarily a brane-localised state, decays to the Kaluza-Klein (KK) discretuum of the LSP. This dynamically realises the compression mechanism for hiding SUSY as decays into the more numerous heavier KK LSP states are favored. We find LHC limits on right-handed slepton LOSPs evaporate, while LHC limits on stop LOSPs weaken to ~350-410 GeV compared to ~700 GeV for a stop decaying to a massless LSP. Similarly, for the searches we consider, present limits on direct production of degenerate first and second generation squarks drop to ~450 GeV compared to ~800 GeV for a squark decaying to a massless LSP. Auto-concealment typically works for a fundamental gravitational scale of $M_*$~10-100 TeV, a scale sufficiently high that traditional searches for signatures of extra dimensions are mostly avoided. If superpartners are discovered, their prompt, displaced, or stopped decays can also provide new search opportunities for extra dimensions with the potential to reach $M_*$~$10^9$ GeV. This mechanism applies more generally than just SUSY theories, pertaining to any theory where there is a discrete quantum number shared by both brane and bulk sectors.

  1. Team Massachusetts Brings a Fourth Dimension to the Solar Decathlon

    Broader source: Energy.gov [DOE]

    Team Massachusetts is bringing a unique perspective to the Solar Decathlon this fall. You might say it is a fourth dimension because of the teams newly constructed 4D Home. But it could also be argued that it is because the Massachusetts College of Art and Design and University of Massachusetts Lowell are collaborating for the teams first entry into the biannual competition, and theyre both public institutions.

  2. Zero point energy on extra dimension: Noncommutative Torus

    E-Print Network [OSTI]

    S. Fabi; B. Harms; G. Karatheodoris

    2007-04-25T23:59:59.000Z

    In this paper we calculate the zero point energy density experienced by observers on M^4 due to a massless scalar field defined throughout M^4 x T^2_F, where T^2_F are fuzzy extra dimensions. Using the Green's function approach we calculate the energy density for the commutative torus and the fuzzy torus. We calculate then the energy density for the fuzzy torus using the Hamiltonian approach. Agreement is shown between Green's function and Hamiltonian approaches.

  3. Bosonization in higher dimensions via noncommutative field theory

    E-Print Network [OSTI]

    Alexios P. Polychronakos

    2006-05-04T23:59:59.000Z

    We propose the bosonization of a many-body fermion theory in D spatial dimensions through a noncommutative field theory on a (2D-1)-dimensional space. This theory leads to a chiral current algebra over the noncommutative space and reproduces the correct perturbative Hilbert space and excitation energies for the fermions. The validity of the method is demonstrated by bosonizing a two-dimensional gas of fermions in a harmonic trap.

  4. Bosonization in Higher Dimensions via Noncommutative Field Theory

    SciTech Connect (OSTI)

    Polychronakos, Alexios P. [Physics Department, City College of the CUNY, New York, New York 10031 (United States)

    2006-05-12T23:59:59.000Z

    We propose the bosonization of a many-body fermion theory in D spatial dimensions through a noncommutative field theory on a (2D-1)-dimensional space. This theory leads to a chiral current algebra over the noncommutative space and reproduces the correct perturbative Hilbert space and excitation energies for the fermions. The validity of the method is demonstrated by bosonizing a two-dimensional gas of fermions in a harmonic trap.

  5. Fractal dimensions of the galaxy distribution varying by steps?

    E-Print Network [OSTI]

    Marie-Noelle Celerier; Reuben Thieberger

    2005-04-20T23:59:59.000Z

    The structure of the large scale distribution of the galaxies have been widely studied since the publication of the first catalogs. Since large redshift samples are available, their analyses seem to show fractal correlations up to the observational limits. The value of the fractal dimension(s) calculated by different authors have become the object of a large debate, as have been the value of the expected transition from fractality to a possible large scale homogeneity. Moreover, some authors have proposed that different scaling regimes might be discerned at different lenght scales. To go further on into this issue, we have applied the correlation integral method to the wider sample currently available. We therefore obtain a fractal dimension of the galaxy distribution which seems to vary by steps whose width might be related to the organization hierarchy observed for the galaxies. This result could explain some of the previous results obtained by other authors from the analyses of less complete catalogs and maybe reconcile their apparent discrepancy. However, the method applied here needs to be further checked, since it produces odd fluctuations at each transition scale, which need to be thoroughly explained.

  6. Yukawa terms in noncommutative SO(10) and E{sub 6} GUTs

    SciTech Connect (OSTI)

    Martin, C. P. [Departamento de Fisica Teorica I, Facultad de Ciencias Fisicas Universidad Complutense de Madrid, 28040 Madrid (Spain)

    2010-10-15T23:59:59.000Z

    We propose a method for constructing Yukawa terms for noncommutative SO(10) and E{sub 6} GUTs when these GUTs are formulated within the enveloping-algebra formalism. The most general noncommutative Yukawa term that we propose contains, at first order in {theta}{sup {mu}{nu},} the most general Becchi-Rouet-Stora invariant Yukawa contribution whose only dimensionful parameter is the noncommutativity parameter. This noncommutative Yukawa interaction is thus renormalizable at first order in {theta}{sup {mu}{nu}}.

  7. Zero Energy Buildings: A Critical Look at the Definition; Preprint

    SciTech Connect (OSTI)

    Torcellini, P.; Pless, S.; Deru, M.; Crawley, D.

    2006-06-01T23:59:59.000Z

    A net zero-energy building (ZEB) is a residential or commercial building with greatly reduced energy needs through efficiency gains such that the balance of energy needs can be supplied with renewable technologies. Despite the excitement over the phrase ''zero energy'', we lack a common definition, or even a common understanding, of what it means. In this paper, we use a sample of current generation low-energy buildings to explore the concept of zero energy: what it means, why a clear and measurable definition is needed, and how we have progressed toward the ZEB goal.

  8. HAUSDORFF DIMENSION, ANALYTIC SETS AND TRANSCENDENCE G. A. EDGAR AND CHRIS MILLER

    E-Print Network [OSTI]

    Edgar, Gerald

    HAUSDORFF DIMENSION, ANALYTIC SETS AND TRANSCENDENCE G. A. EDGAR AND CHRIS MILLER Abstract. Every of Edgar [5], Falconer [7], Mattila [9] or [11] for details). From now on, "dimension" means "Hausdorff

  9. The Navier-Stokes problem modified by an absorption term

    E-Print Network [OSTI]

    Hermenegildo Borges de Oliveira

    2009-03-31T23:59:59.000Z

    In this work we consider the Navier-Stokes problem modified by the absorption term $|\\textbf{u}|^{\\sigma-2}\\textbf{u}$, where $\\sigma>1$, which is introduced in the momentum equation. % For this new problem, we prove the existence of weak solutions for any dimension $N\\geq 2$ and its uniqueness for N=2. % Then we prove that, for zero body forces, the weak solutions extinct in a finite time if $12$. % We prove also that for a general non-zero body forces, the weak solutions exponentially decay in time for any $\\sigma>1$. In the special case of a suitable forces field which vanishes at some instant, we prove that the weak solutions extinct at the same instant provided $1<\\sigma<2$.

  10. Burrow fractal dimension and foraging success in subterranean rodents: a simulation

    E-Print Network [OSTI]

    Burrow fractal dimension and foraging success in subterranean rodents: a simulation S. C. Le Comber. Fractal dimension, which describes how a burrow explores the surrounding area in a way that is independent assumed that burrows of high fractal dimension will be associated with greater foraging success, this has

  11. Fractal dimension unscreened angles measured for radial viscous fingering Olivier Praud Harry Swinney

    E-Print Network [OSTI]

    Texas at Austin. University of

    Fractal dimension unscreened angles measured for radial viscous fingering Olivier Praud Harry, USA #Received November 2004; published July 2005# have examined fractal patterns formed injection experiments. fractal dimension D 0 of pattern large r / 1.70±0.02. Further, generalized dimensions D pattern

  12. Co-dimension-two Grazing Bifurcations in Single-degree-of-freedom Impact Oscillators

    E-Print Network [OSTI]

    Zhao, Xiaopeng

    Co-dimension-two Grazing Bifurcations in Single-degree-of-freedom Impact Oscillators Phanikrishna paper, the transition be- tween two characteristically different co-dimension-one grazing bifurcation scenarios is found to be associated with the presence of certain co-dimension-two graz- ing bifurcation

  13. DETERMINING THE FRACTAL DIMENSION OF A TIME SERIES WITH A NEURAL NET

    E-Print Network [OSTI]

    Danon, Yaron

    DETERMINING THE FRACTAL DIMENSION OF A TIME SERIES WITH A NEURAL NET MARK J. EMBRECHTS AND YARON and require expert interaction for interpreting the calculated fractal dimension. Artificial neural nets (ANN) offer a fast and elegant way to estimate the fractal dimension of a time series. A backpropagation net

  14. The R-map and the Coupling of N=2 Tensor Multiplets in 5 and 4 Dimensions

    E-Print Network [OSTI]

    M. Gunaydin; S. McReynolds; M. Zagermann

    2005-11-02T23:59:59.000Z

    We study the dimensional reduction of five dimensional N=2 Yang-Mills-Einstein supergravity theories (YMESGT) coupled to tensor multiplets. The resulting 4D theories involve first order interactions among tensor and vector fields with mass terms. If the 5D gauge group, K, does not mix the 5D tensor and vector fields, the 4D tensor fields can be integrated out in favor of 4D vector fields and the resulting theory is dual to a standard 4D YMESGT. The gauge group has a block diagonal symplectic embedding and is a semi-direct product of the 5D gauge group K with a Heisenberg group of dimension (2P+1), where 2P is the number of tensor fields in five dimensions. There exists an infinite family of theories, thus obtained, whose gauge groups are pp-wave contractions of the simple noncompact groups of type SO*(2M). If, on the other hand, the 5D gauge group does mix the 5D tensor and vector fields, the resulting 4D theory is dual to a 4D YMESGT whose gauge group does, in general,NOT have a block diagonal symplectic embedding and involves additional topological terms. The scalar potentials of the dimensionally reduced theories naturally have some of the ingredients that were found necessary for stable de Sitter ground states. We comment on the relation between the known 5D and 4D, N=2 supergravities with stable de Sitter ground states.

  15. Outstanding Long-Term Liabilities

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomass and Biofuels BiomassOutstanding-Long-Term-Liabilities Sign

  16. Virtual Chassis for Snake Robots: Definition and Applications

    E-Print Network [OSTI]

    Choset, Howie

    Full paper Virtual Chassis for Snake Robots: Definition and Applications David Rollinson*, Austin Buchan and Howie Choset The Robotics Institute, Carnegie Mellon University, 5000 Forbes Avenue the motion of a snake robot is difficult. This is in part because the internal shape changes that the robot

  17. The development of high definition television : an ecology of games

    E-Print Network [OSTI]

    Neil, Suzanne Chambliss

    2010-01-01T23:59:59.000Z

    This study is an analysis of the forces that shaped the overall character of a new US television system, high definition or HDTV, between the early 1980s and 2010, with a primary focus on the period leading up the Federal ...

  18. Patent License for OpenSSL 1. Definitions

    E-Print Network [OSTI]

    Rogaway, Phillip

    Patent License for OpenSSL 1. Definitions 1.1 "Licensor" means Phillip Rogaway. orOne Shields Avenue, Davis, CA 95616-8562. 1.2 "Licensed Patents" means any patent that claims priority to United States Patent Application No. 09/918,615 entitled "Method and Apparatus for Facilitating Efficient

  19. Seismic Tomography: Definitions Lapo Boschi (lapo@erdw.ethz.ch)

    E-Print Network [OSTI]

    Boschi, Lapo

    Tomography Seismic tomography is the science of interpreting seismic measurements (seismograms) to derive; that is to say, solve the seismological inverse problem. Seismic data and their interpretation Seismic stationsSeismic Tomography: Definitions Lapo Boschi (lapo@erdw.ethz.ch) September 14, 2009 Seismic

  20. WICT PROCEEDINGS, DECEMBER 2008 1 Definition Characterisation through Genetic Algorithms

    E-Print Network [OSTI]

    Pace, Gordon J.

    Borg Dept. of Artificial Intelligence University of Malta claudia.borg@um.edu.mt Mike Rosner Dept. of Artificial Intelligence University of Malta mike.rosner@um.edu.mt Gordon J. Pace Dept. of Computer Science University of Malta gordon.pace@um.edu.mt Abstract The identification of definitions from natural lan- guage

  1. A possible definition of a {\\it Realistic} Physics Theory

    E-Print Network [OSTI]

    Nicolas Gisin

    2014-01-02T23:59:59.000Z

    A definition of a {\\it Realistic} Physics Theory is proposed based on the idea that, at all time, the set of physical properties possessed (at that time) by a system should unequivocally determine the probabilities of outcomes of all possible measurements.

  2. Renewable Energy Specifications, Testing and Certification Terms...

    Open Energy Info (EERE)

    Terms of Reference Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy Specifications, Testing and Certification Terms of Reference Agency...

  3. Cosmology in One Dimension: Fractal Geometry, Power Spectra and Correlation

    E-Print Network [OSTI]

    Bruce N. Miller; Jean-Louis Rouet

    2010-12-08T23:59:59.000Z

    Concentrations of matter, such as galaxies and galactic clusters, originated as very small density fluctuations in the early universe. The existence of galaxy clusters and super-clusters suggests that a natural scale for the matter distribution may not exist. A point of controversy is whether the distribution is fractal and, if so, over what range of scales. One-dimensional models demonstrate that the important dynamics for cluster formation occur in the position-velocity plane. Here the development of scaling behavior and multifractal geometry is investigated for a family of one-dimensional models for three different, scale-free, initial conditions. The methodology employed includes: 1) The derivation of explicit solutions for the gravitational potential and field for a one-dimensional system with periodic boundary conditions (Ewald sums for one dimension); 2) The development of a procedure for obtaining scale-free initial conditions for the growing mode in phase space for an arbitrary power-law index; 3) The evaluation of power spectra, correlation functions, and generalized fractal dimensions at different stages of the system evolution. It is shown that a simple analytic representation of the power spectra captures the main features of the evolution, including the correct time dependence of the crossover from the linear to nonlinear regime and the transition from regular to fractal geometry. A possible physical mechanism for understanding the self-similar evolution is introduced. It is shown that hierarchical cluster formation depends both on the model and the initial power spectrum. Under special circumstances a simple relation between the power spectrum, correlation function, and correlation dimension in the highly nonlinear regime is confirmed.

  4. Method of forming cavitated objects of controlled dimension

    DOE Patents [OSTI]

    Anderson, P.R.; Miller, W.J.

    1981-02-11T23:59:59.000Z

    A method is disclosed of controllably varying the dimensions of cavitated objects such as hollow spherical shells wherein a precursor shell is heated to a temperature above the shell softening temperature in an ambient atmosphere wherein the ratio of gases which are permeable through the shell wall at that temperature to gases which are impermeable through the shell wall is substantially greater than the corresponding ratio for gases contained within the precursor shell. As the shell expands, the partial pressures of permeable gases internally and externally of the shell approach and achieve equilibrium, so that the final shell size depends solely upon the difference in impermeable gas partial pressures and shell surface tension.

  5. Fractal Dimensions for Continuous Time Random Walk Limits

    E-Print Network [OSTI]

    Mark M. Meerschaert; Erkan Nane; Yimin Xiao

    2011-02-03T23:59:59.000Z

    In a continuous time random walk (CTRW), each random jump follows a random waiting time. CTRW scaling limits are time-changed processes that model anomalous diffusion. The outer process describes particle jumps, and the non-Markovian inner process (or time change) accounts for waiting times between jumps. This paper studies fractal properties of the sample functions of a time-changed process, and establishes some general results on the Hausdorff and packing dimensions of its range and graph. Then those results are applied to CTRW scaling limits.

  6. Model Independence in Two Dimensions and Polarized Cold Dipolar Molecules

    SciTech Connect (OSTI)

    Volosniev, A. G.; Fedorov, D. V.; Jensen, A. S.; Zinner, N. T. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

    2011-06-24T23:59:59.000Z

    We calculate the energy and wave functions of two particles confined to two spatial dimensions interacting via arbitrary anisotropic potentials with negative or zero net volume. The general rigorous analytic expressions are given in the weak coupling limit where universality or model independence are approached. The monopole part of anisotropic potentials is crucial in the universal limit. We illustrate the universality with a system of two arbitrarily polarized cold dipolar molecules in a bilayer. We discuss the transition to universality as a function of polarization and binding energy and compare analytic and numerical results obtained by the stochastic variational method. The universal limit is essentially reached for experimentally accessible strengths.

  7. Compton Scattering at the NLC and Large Extra Dimensions

    E-Print Network [OSTI]

    Hooman Davoudiasl

    1999-09-23T23:59:59.000Z

    We study Compton scattering, gamma e -> gamma e, in the context of the recent proposal for Weak Scale Quantum Gravity (WSQG) with large extra dimensions. It is shown that, with an ultraviolet cutoff $M_S \\sim 1$ TeV for the effective gravity theory, the cross section for this process at the Next Linear Collider (NLC) deviates from the prediction of the Standard Model significantly. Our results suggest that, for typical proposed NLC energies and luminosities, WSQG can be tested in the range 4 TeV$\\lsim M_S \\lsim$ 16 TeV, making gamma e -> gamma e an important test channel.

  8. Radion stabilization from the vacuum on flat extra dimensions

    SciTech Connect (OSTI)

    Santos, Eli [Departamento de Fisica, Universidad Autonoma Metropolitana, Apartado Postal 55-534, C. P. 09340 Mexico, D.F. (Mexico); Secretaria Academica de Fisica y Matematicas, Fac. de Ingenieria, Universidad Autonoma de Chiapas, Calle 4a. Oriente, Norte 1428, 29000 Tuxtla Gutierrez, Chiapas (Mexico); Perez-Lorenzana, A. [Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del I.P.N., Apartado Postal 14-740, 07000, Mexico, D.F. (Mexico); Pimentel, Luis O. [Departamento de Fisica, Universidad Autonoma Metropolitana, Apartado Postal 55-534, C. P. 09340 Mexico, D.F. (Mexico)

    2008-01-15T23:59:59.000Z

    Volume stabilization in models with flat extra dimensions could follow from vacuum energy residing in the bulk when translational invariance is spontaneously broken. We study a simple toy model that exemplifies this mechanism which considers a massive scalar field with nontrivial boundary conditions at the end points of the compact space, and includes contributions from brane and bulk cosmological constants. We perform our analysis in the conformal frame where the radion field, associated with volume variations, is defined, and present a general strategy for building stabilization potentials out of those ingredients. We also provide working examples for the interval and the T{sup n}/Z{sub 2} orbifold configuration.

  9. Statistical Mechanics of Kinks in (1+1)-Dimensions

    E-Print Network [OSTI]

    Francis J. Alexander; Salman Habib

    1992-12-09T23:59:59.000Z

    We investigate the thermal equilibrium properties of kinks in a classical $\\phi^4$ field theory in $1+1$ dimensions. The distribution function, kink density, and correlation function are determined from large scale simulations. A dilute gas description of kinks is shown to be valid below a characteristic temperature. A double Gaussian approximation to evaluate the eigenvalues of the transfer operator enables us to extend the theoretical analysis to higher temperatures where the dilute gas approximation fails. This approach accurately predicts the temperature at which the kink description breaks down.

  10. Search for universal extra dimensions in ppbar collisions

    SciTech Connect (OSTI)

    Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; /Oklahoma U.; Acharya, Bannanje Sripath; /Tata Inst.; Adams, Mark Raymond; /Illinois U., Chicago; Adams, Todd; /Florida State U.; Alexeev, Guennadi D.; /Dubna, JINR; Alkhazov, Georgiy D.; /St. Petersburg, INP; Alton, Andrew K.; /Michigan U. /Augustana Coll., Sioux Falls; Alverson, George O.; /Northeastern U.; Aoki, Masato; /Fermilab; Askew, Andrew Warren; /Florida State U. /Stockholm U.

    2011-12-01T23:59:59.000Z

    We present a search for Kaluza-Klein (KK) particles predicted by models with universal extra dimensions (UED) using a data set corresponding to an integrated luminosity of 7.3 fb{sup -1}, collected by the D0 detector at a p{bar p} center of mass energy of 1.96 TeV. The decay chain of KK particles can lead to a final state with two muons of the same charge. This signature is used to set a lower limit on the compactification scale of R{sup -1} > 260 GeV in a minimal UED model.

  11. Zero point energy on extra dimensions: Noncommutative torus

    SciTech Connect (OSTI)

    Fabi, S.; Harms, B.; Karatheodoris, G. [Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, Alabama 35487-0324 (United States)

    2007-09-15T23:59:59.000Z

    In this paper we calculate the zero point energy density experienced by observers on M{sup 4} due to a massless scalar field defined throughout M{sup 4}xT{sub F}{sup 2}, where T{sub F}{sup 2} are fuzzy extra dimensions. Using the Green's function approach we calculate the energy density for the commutative torus and the fuzzy torus. We also calculate the energy density for the fuzzy torus using the Hamiltonian approach. Agreement is shown between the Green's function and Hamiltonian approaches.

  12. The Running coupling BFKL anomalous dimensions and splitting functions.

    E-Print Network [OSTI]

    Thorne, Robert S

    2 2 + 30.72?50? ) . (2.36) 14 This contribution to the splitting function for t = 6 and is shown in fig. 6.a. Note that because of the truncation of GE(N, t), beyond 6th order the expression for PLOgg (?, ?s(Q2)) is not what one would really get... .K. Abstract I explicitly calculate the anomalous dimensions and splitting functions governing the Q2 evolu- tion of the parton densities and structure functions which result from the running coupling BFKL equation at LO, i.e. I perform a resummation in powers...

  13. Near field optical probe for critical dimension measurements

    DOE Patents [OSTI]

    Stallard, B.R.; Kaushik, S.

    1999-05-18T23:59:59.000Z

    A resonant planar optical waveguide probe for measuring critical dimensions on an object in the range of 100 nm and below is disclosed. The optical waveguide includes a central resonant cavity flanked by Bragg reflector layers with input and output means at either end. Light is supplied by a narrow bandwidth laser source. Light resonating in the cavity creates an evanescent electrical field. The object with the structures to be measured is translated past the resonant cavity. The refractive index contrasts presented by the structures perturb the field and cause variations in the intensity of the light in the cavity. The topography of the structures is determined from these variations. 8 figs.

  14. Method of forming cavitated objects of controlled dimension

    DOE Patents [OSTI]

    Anderson, Paul R. (Toledo, OH); Miller, Wayne J. (Ann Arbor, MI)

    1982-01-01T23:59:59.000Z

    A method of controllably varying the dimensions of cavitated objects such as hollow spherical shells wherein a precursor shell is heated to a temperature above the shell softening temperature in an ambient atmosphere wherein the ratio of gases which are permeable through the shell wall at that temperature to gases which are impermeable through the shell wall is substantially greater than the corresponding ratio for gases contained within the precursor shell. As the shell expands, the partial pressures of permeable gases internally and externally of the shell approach and achieve equilibrium, so that the final shell size depends solely upon the difference in impermeable gas partial pressures and shell surface tension.

  15. Impact of Biodiesel on the Near-term Performance and Long-term...

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

    Impact of Biodiesel on the Near-term Performance and Long-term Durability of Advanced Aftertreatment Systems Impact of Biodiesel on the Near-term Performance and Long-term...

  16. Long-Term Environmental Stewardship

    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 HomeLatestCenterLogging in Logging inLogisticsLongLong-Term

  17. Standard Terms and Conditions | 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 Sol HomeFacebookScholarshipSpiraling Laser Pulses Could VideoAboutStandard Terms

  18. Explicit Supersymmetry Breaking on Boundaries of Warped Extra Dimensions

    SciTech Connect (OSTI)

    Hall, Lawrence J.; Nomura, Yasunori; Okui, Takemichi; Oliver, Steven J.

    2003-02-25T23:59:59.000Z

    Explicit supersymmetry breaking is studied in higher dimensional theories by having boundaries respect only a subgroup of the bulk symmetry. If the boundary symmetry is the maximal subgroup allowed by the boundary conditions imposed on the fields, then the symmetry can be consistently gauged; otherwise gauging leads to an inconsistent theory. In a warped fifth dimension, an explicit breaking of all bulk supersymmetries by the boundaries is found to be inconsistent with gauging; unlike the case of flat 5D, complete supersymmetry breaking by boundary conditions is not consistent with supergravity. Despite this result, the low energy effective theory resulting from boundary supersymmetry breaking becomes consistent in the limit where gravity decouples, and such models are explored in the hope that some way of successfully incorporating gravity can be found. A warped constrained standard model leads to a theory with one Higgs boson with mass expected close to the experimental limit. A unified theory in a warped fifth dimension is studied with boundary breaking of both SU(5) gauge symmetry and supersymmetry. The usual supersymmetric predictionfor gauge coupling unification holds even though the TeV spectrum is quite unlike the MSSM. Such a theory may unify matter and Higgs in the same SU(5) hypermultiplet.

  19. Black holes with gravitational hair in higher dimensions

    SciTech Connect (OSTI)

    Anabalon, Andres [Departamento de Ciencias Facultad de Artes Liberales, Facultad de Ingenieria y Ciencias, Universidad Adolfo Ibanez, Vina Del Mar (Chile); Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, Am Muehlenberg 1 D-14476 Golm (Germany); Canfora, Fabrizio [Centro de Estudios Cientificos (CECS), Casilla 1469 Valdivia (Chile); Giacomini, Alex; Oliva, Julio [Instituto de Ciencias Fisicas y Matematicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia (Chile)

    2011-10-15T23:59:59.000Z

    A new class of vacuum black holes for the most general gravity theory leading to second order field equations in the metric in even dimensions is presented. These space-times are locally anti-de Sitter in the asymptotic region, and are characterized by a continuous parameter that does not enter in the conserve charges, nor it can be reabsorbed by a coordinate transformation: it is therefore a purely gravitational hair. The black holes are constructed as a warped product of a two-dimensional space-time, which resembles the r-t plane of the Banados-Teitelboim-Zanelli black hole, times a warp factor multiplying the metric of a D-2-dimensional Euclidean base manifold, which is restricted by a scalar equation. It is shown that all the Noether charges vanish. Furthermore, this is consistent with the Euclidean action approach: even though the black hole has a finite temperature, both the entropy and the mass vanish. Interesting examples of base manifolds are given in eight dimensions which are products of Thurston geometries, giving then a nontrivial topology to the black hole horizon. The possibility of introducing a torsional hair for these solutions is also discussed.

  20. INVERSE SPECTRAL AND SCATTERING THEORY FOR THE HALF-LINE LEFT DEFINITE

    E-Print Network [OSTI]

    INVERSE SPECTRAL AND SCATTERING THEORY FOR THE HALF-LINE LEFT DEFINITE STURM-LIOUVILLE PROBLEM C will prove some uniqueness results for inverse spec- tral theory and inverse scattering for the left definite is via the inverse spectral theory for the left definite problem, which also is not very well developed

  1. On the definition of velocity in theories with two observer-independent scales

    E-Print Network [OSTI]

    S. Mignemi

    2003-02-10T23:59:59.000Z

    We argue that a consistent definition of the velocity of a particle in generalizations of special relativity with two observer-independent scales should be independent from the mass of the particle. This request rules out the definition $v_i=\\partial p_0/\\partial p_i$, but allows for other definitions proposed in the literature.

  2. A DEFINITION OF "DEGREE OF CONFIRMATION" CARL G. HEMPEL AND PAUL OPPENHEIM

    E-Print Network [OSTI]

    Fitelson, Branden

    -method of settling the issue seems to consist in actually constructing an explicit and general definition and theory, and ,vith emphasis on the general methodological issues, a theory of 98 #12;DEFINITION OF "DEGREEA DEFINITION OF "DEGREE OF CONFIRMATION" CARL G. HEMPEL AND PAUL OPPENHEIM 1. The problem

  3. arXiv:1110.0908v1 Employing the perturbative definition of the Higgs

    E-Print Network [OSTI]

    Maas, Axel

    mass in and beyond perturbation theory The precise definition of the mass of a particle is a highly non) gauge theories. The most direct definition of the mass of a particle is just given by the (timearXiv:1110.0908v1 [heplat] 5 Oct 2011 Employing the perturbative definition of the Higgs mass

  4. Technical forum: Review of sour service definitions. Part 2

    SciTech Connect (OSTI)

    McIntyre, D.R. [Saudi Aramco, Dhahran (Saudi Arabia)

    1997-04-01T23:59:59.000Z

    Here, the author replies to the European Federation of Corrosion`s (EFC`s) comments on his original article ``Review of Sour Service Definitions`` published in the August 1996 issue of MP. EFC`s comments are welcome; they list for MP readers the disturbing number of literature, laboratory, and field failures that EFC had to label as irrelevant in defense of the nonsour service description for Region 1 of its pH vs. H{sub 2}S diagram. EFC wants their Publication 16 read and considered on its merits. Potential users of the publication should also read and consider these allegedly irrelevant studies on their merits. It is vital to generate a true industry consensus on this topic, since whatever sour service definition is codified in the ISO standard will be a fixture in the industry for many years to come.

  5. Sandia photovoltaic systems definition and application experiment projects

    SciTech Connect (OSTI)

    Jones, G.

    1983-04-01T23:59:59.000Z

    A compilation is given of the abstracts and visual material used in presentation at the Fourth Photovoltaic Systems Definition and Applications Projects Integration Meeting held at the Marriott Hotel, April 12-14, 1983, in Albuquerque, New Mexico. The meeting provided a forum for detailed analyses on recently completed and current activities. These activities include systems research, balance-of-system technology development, residential experimentation, and evaluation of intermediate-sized applications.

  6. Deformations of infrared-conformal theories in two dimensions

    E-Print Network [OSTI]

    Oscar Akerlund; Philippe de Forcrand

    2014-10-05T23:59:59.000Z

    We study two exactly solvable two-dimensional conformal models, the critical Ising model and the Sommerfield model, on the lattice. We show that finite-size effects are important and depend on the aspect ratio of the lattice. In particular, we demonstrate how to obtain the correct massless behavior from an infinite tower of finite-size-induced masses and show that it is necessary to first take the cylindrical geometry limit in order to get correct results. In the Sommerfield model we also introduce a mass deformation to measure the mass anomalous dimension, $\\gamma_m$. We find that the explicit scale breaking of the lattice setup induces corrections which must be taken into account in order to reproduce $\\gamma_m$ at the infrared fixed point. These results can be used to improve the methodology in the search for the conformal window in QCD-like theories with many flavors.

  7. Brane solutions of a spherical sigma model in six dimensions

    E-Print Network [OSTI]

    Hyun Min Lee; Antonios Papazoglou

    2004-11-16T23:59:59.000Z

    We explore solutions of six dimensional gravity coupled to a non-linear sigma model, in the presence of co-dimension two branes. We investigate the compactifications induced by a spherical scalar manifold and analyze the conditions under which they are of finite volume and singularity free. We discuss the issue of single-valuedness of the scalar fields and provide some special embedding of the scalar manifold to the internal space which solves this problem. These brane solutions furnish some self-tuning features, however they do not provide a satisfactory explanation of the vanishing of the effective four dimensional cosmological constant. We discuss the properties of this model in relation with the self-tuning example based on a hyperbolic sigma model.

  8. Decay of Graviton Condensates and their Generalizations in Arbitrary Dimensions

    E-Print Network [OSTI]

    Florian Kuhnel; Bo Sundborg

    2014-09-30T23:59:59.000Z

    Classicalons are self-bound classical field configurations, which include black holes in General Relativity. In quantum theory, they are described by condensates of many soft quanta. In this work, their decay properties are studied in arbitrary dimensions. It is found that generically the decays of other classicalons are enhanced compared to pure graviton condensates, ie. black holes. The evaporation of higher dimensional graviton condensates turns out to match Hawking radiation solely due to non-linearites captured by the classicalon picture. Although less stable than black holes, all self-bound condensates are shown to be stable in the limit of large mass. Like for black holes, the effective coupling always scales as the inverse of the number of constituents, indicating that these systems are at critical points of quantum phase transitions. Consequences for cosmology, astro- and collider physics are briefly discussed.

  9. Inhomogeneous Cooling of the Rough Granular Gas in Two Dimensions

    E-Print Network [OSTI]

    Sudhir N. Pathak; Dibyendu Das; R. Rajesh

    2014-07-03T23:59:59.000Z

    We study the inhomogeneous clustered regime of a freely cooling granular gas of rough particles in two dimensions using large-scale event driven simulations and scaling arguments. During collisions, rough particles dissipate energy in both the normal and tangential directions of collision. In the inhomogeneous regime, translational kinetic energy and the rotational energy decay with time $t$ as power-laws $t^{-\\theta_T}$ and $t^{-\\theta_R}$. We numerically determine $\\theta_T \\approx 1$ and $\\theta_R \\approx 1.6$, independent of the coefficients of restitution. The inhomogeneous regime of the granular gas has been argued to be describable by the ballistic aggregation problem, where particles coalesce on contact. Using scaling arguments, we predict $\\theta_T=1$ and $\\theta_R=1$ for ballistic aggregation, $\\theta_R$ being different from that obtained for the rough granular gas. Simulations of ballistic aggregation with rotational degrees of freedom are consistent with these exponents.

  10. Accident at Three Mile Island: the human dimensions

    SciTech Connect (OSTI)

    Sills, D.L.; Wolf, C.P.; Shelanski, V.B. (eds.)

    1982-01-01T23:59:59.000Z

    A separate abstract was prepared for each of the 19 chapters, divided according to the following Parts: (1) Public Perceptions of Nuclear Energy; (2) Local Responses to Nuclear Plants; (3) Institutional Responsibilities for Nuclear Energy; (4) The Interaction of Social and Technical Systems; and (5) Implications for Public Policy. All of the abstracts will appear in Energy Abstracts for Policy Analysis (EAPA); three will appear in Energy Research Abstracts (ERA). At the request of the President's Commission on the Accident at Three Mile Island (the Kemeny Commission), the Social Science Research Council commissioned social scientists to write a series of papers on the human dimensions of the event. This volume includes those papers, in revised and expanded form, and a comprehensive bibliography of published and unpublished social science research on the accident and its aftermath.

  11. Higgs Critical Exponents and Conformal Bootstrap in Four Dimensions

    E-Print Network [OSTI]

    Oleg Antipin; Esben Mlgaard; Francesco Sannino

    2015-05-11T23:59:59.000Z

    We investigate relevant properties of composite operators emerging in nonsupersymmetric, four-dimensional gauge-Yukawa theories with interacting conformal fixed points within a precise framework. The theories investigated in this work are structurally similar to the standard model of particle interactions, but differ by developing perturbative interacting fixed points. We investigate the physical properties of the singlet and the adjoint composite operators quadratic in the Higgs field, and discover that the singlet anomalous dimension is substantially larger than the adjoint one. The numerical bootstrap results are then compared to precise four dimensional conformal field theoretical results. To accomplish this, it was necessary to calculate explicitly the crossing symmetry relations for the global symmetry group SU($N$)$\\times$SU($N$).

  12. The Metastability Threshold for Modified Bootstrap Percolation in d Dimensions

    E-Print Network [OSTI]

    Alexander E. Holroyd

    2006-04-03T23:59:59.000Z

    In the modified bootstrap percolation model, sites in the cube {1,...,L}^d are initially declared active independently with probability p. At subsequent steps, an inactive site becomes active if it has at least one active nearest neighbour in each of the d dimensions, while an active site remains active forever. We study the probability that the entire cube is eventually active. For all d>=2 we prove that as L\\to\\infty and p\\to 0 simultaneously, this probability converges to 1 if L=exp^{d-1} (lambda+epsilon)/p, and converges to 0 if L=exp^{d-1} (lambda-epsilon)/p, for any epsilon>0. Here exp^n denotes the n-th iterate of the exponential function, and the threshold lambda equals pi^2/6 for all d.

  13. Strongly interacting confined quantum systems in one dimension

    E-Print Network [OSTI]

    A. G. Volosniev; D. V. Fedorov; A. S. Jensen; M. Valiente; N. T. Zinner

    2015-05-24T23:59:59.000Z

    In one dimension, the study of magnetism dates back to the dawn of quantum mechanics when Bethe solved the famous Heisenberg model that describes quantum behaviour in magnetic systems. In the last decade, one-dimensional systems have become a forefront area of research driven by the realization of the Tonks-Girardeau gas using cold atomic gases. Here we prove that one-dimensional fermionic and bosonic systems with strong short-range interactions are solvable in arbitrary confining geometries by introducing a new energy-functional technique and obtaining the full spectrum of energies and eigenstates. As a first application, we calculate spatial correlations and show how both ferro- and anti-ferromagnetic states are present already for small system sizes that are prepared and studied in current experiments. Our work demonstrates the enormous potential for quantum manipulation of magnetic correlations at the microscopic scale.

  14. Dirac equation in low dimensions: The factorization method

    E-Print Network [OSTI]

    J. A. Sanchez-Monroy; C. J. Quimbay

    2014-09-30T23:59:59.000Z

    We present a general approach to solve the (1+1) and (2+1)-dimensional Dirac equation in the presence of static scalar, pseudoscalar and gauge potentials, for the case in which the potentials have the same functional form and thus the factorization method can be applied. We show that the presence of electric potentials in the Dirac equation leads to a two Klein-Gordon equations including an energy-dependent potential. We then generalize the factorization method for the case of energy-dependent Hamiltonians. Additionally, the shape invariance is generalized for a specific class of energy-dependent Hamiltonians. We also present a condition for the absence of the Klein's paradox (stability of the Dirac sea), showing how Dirac particles in low dimensions can be confined for a wide family of potentials.

  15. Diesel lube oils; Fourth dimension of diesel particulate control

    SciTech Connect (OSTI)

    Springer, K.J. (Southwest Research Institute, San Antonio, TX (US))

    1989-07-01T23:59:59.000Z

    Particulate emission control, for the HD diesel engine, has previously been considered a three-dimensional problem involving: combustion of the fuel by the engine, fuel modification, and exhaust aftertreatment. The lube oil contribution may be considered a fourth dimension of the problem. Historically, the heavy-duty engine manufacturer has met emission standards for smoke (1968 to present), CO, HC, and NOx (1974 to present) and particulates (1988 to present) through changes in engine design. This paper used the allocation method to estimate the reduction in lube oil consumption needed to meet 1991 and 1994 U.S. particulate emission standards. This analysis places the contribution of lube oil as a source of exhaust particulates into prospective with the contributions from fuel sulfur and fuel combustion. An emissions control strategy to meet future regulations is offered in which reductions from fuel modification, combustion improvement, reduced lube oil consumption, and exhaust particulate trap-catalysts are all involved.

  16. Cross product in N Dimensions - the doublewedge product

    E-Print Network [OSTI]

    Carlo Andrea Gonano; Riccardo Enrico Zich

    2014-07-21T23:59:59.000Z

    The cross product frequently occurs in Physics and Engineering, since it has large applications in many contexts, e.g. for calculating angular momenta, torques, rotations, volumes etc. Though this mathematical operator is widely used, it is commonly expressed in a 3-D notation which gives rise to many paradoxes and difficulties. In fact, instead of other vector operators like scalar product, the cross product is defined just in 3-D space, it does not respect reflection rules and invokes the concept of "handedness". In this paper we are going to present an extension of cross product in an arbitrary number N of spatial Dimensions, different from the one adopted in the Exterior Algebra and explicitly designed for an easy calculus of moments.

  17. Extra dimensions and neutrinoless double beta decay experiments

    SciTech Connect (OSTI)

    Gozdz, Marek; Kaminski, Wieslaw A.; Faessler, Amand [Theoretical Physics Department, Maria Curie-Sklodowska University, Lublin (Poland); Institute fuer Theoretische Physik, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)

    2005-05-01T23:59:59.000Z

    The neutrinoless double beta decay is one of the few phenomena, belonging to the nonstandard physics, which is extensively being sought for in experiments. In the present paper the link between the half-life of the neutrinoless double beta decay and theories with large extra dimensions is explored. The use of the sensitivities of currently planned 0{nu}2{beta} experiments: DAMA, CANDLES, COBRA, DCBA, CAMEO, GENIUS, GEM, MAJORANA, MOON, CUORE, EXO, and XMASS, gives the possibility for a nondirect 'experimental' verification of various extra dimensional scenarios. We discuss also the results of the Heidelberg-Moscow Collaboration. The calculations are based on the Majorana neutrino mass generation mechanism in the Arkani-Hamed-Dimopoulos-Dvali model.

  18. Sparse matrix transform for fast projection to reduced dimension

    SciTech Connect (OSTI)

    Theiler, James P [Los Alamos National Laboratory; Cao, Guangzhi [GE HEALTHCARE; Bouman, Charles A [PURDUE UNIV

    2010-01-01T23:59:59.000Z

    We investigate three algorithms that use the sparse matrix transform (SMT) to produce variance-maximizing linear projections to a lower-dimensional space. The SMT expresses the projection as a sequence of Givens rotations and this enables computationally efficient implementation of the projection operator. The baseline algorithm uses the SMT to directly approximate the optimal solution that is given by principal components analysis (PCA). A variant of the baseline begins with a standard SMT solution, but prunes the sequence of Givens rotations to only include those that contribute to the variance maximization. Finally, a simpler and faster third algorithm is introduced; this also estimates the projection operator with a sequence of Givens rotations, but in this case, the rotations are chosen to optimize a criterion that more directly expresses the dimension reduction criterion.

  19. Black holes in extra dimensions can decay on the bulk

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2003-01-08T23:59:59.000Z

    In the extra dimensional theories, with TeV scale Plank constant, black holes may be produced in the Large Hadron Collider experiments. We have argued that in the d-dimensional black hole, the intrinsically 4-dimensional brane fields do not see the same geometry at the horizon, as in a 4-dimensional space-time. Kaluza-Klein modes invades the brane and surroundings and the brane fields can be considered as a thermal system at the temperature of the black hole. From energy and entropy consideration, we show that whether or not a six-dimensional black hole will decay by emitting Kaluza-Klein modes or the standard model particles, will depend on the length scale of the extra dimensions as well as on the mass of the black hole. For higher dimensional black holes, Kaluza-Klein modes will dominate the decay.

  20. The Need of Dark Energy for Dynamical Compactification of Extra Dimensions on the Brane

    E-Print Network [OSTI]

    Cuadros-Melgar, B; Cuadros-Melgar, Bertha; Papantonopoulos, Eleftherios

    2005-01-01T23:59:59.000Z

    We consider a six-dimensional braneworld model and we study the cosmological evolution of a (4+1) brane-universe. Introducing matter on the brane we show that the scale factor of the physical three-dimensional brane-universe is related to the scale factor of the fourth dimension on the brane, and the suppression of the extra dimension compared to the three dimensions requires the presence of dark energy.

  1. The Need of Dark Energy for Dynamical Compactification of Extra Dimensions on the Brane

    E-Print Network [OSTI]

    Bertha Cuadros-Melgar; Eleftherios Papantonopoulos

    2005-08-31T23:59:59.000Z

    We consider a six-dimensional braneworld model and we study the cosmological evolution of a (4+1) brane-universe. Introducing matter on the brane we show that the scale factor of the physical three-dimensional brane-universe is related to the scale factor of the fourth dimension on the brane, and the suppression of the extra dimension compared to the three dimensions requires the presence of dark energy.

  2. Non-linear scaling of performance appraisal dimensions: application of the ProMES methodology

    E-Print Network [OSTI]

    Hedley, Amie Lynn

    1990-01-01T23:59:59.000Z

    of an employee to the organization. For example, one dimension of performance might be the ability of an employee to effectively communicate with co-workers. In order to determine what these performance dimensions might be, interviews were conducted. 22... overall composite, the raw scores were converted to z-scores. In order to do this, the mean and standard deviation were computed for each performance dimension. These calculations were done across the subjects in all three groups. An employee's z...

  3. Non-linear scaling of performance appraisal dimensions: application of the ProMES methodology

    E-Print Network [OSTI]

    Hedley, Amie Lynn

    1990-01-01T23:59:59.000Z

    of an employee to the organization. For example, one dimension of performance might be the ability of an employee to effectively communicate with co-workers. In order to determine what these performance dimensions might be, interviews were conducted. 22... overall composite, the raw scores were converted to z-scores. In order to do this, the mean and standard deviation were computed for each performance dimension. These calculations were done across the subjects in all three groups. An employee's z...

  4. The R-map and the Coupling of N=2 Tensor Multiplets in 5 and 4 Dimensions

    E-Print Network [OSTI]

    Gnaydin, M; Zagermann, M

    2006-01-01T23:59:59.000Z

    We study the dimensional reduction of five dimensional N=2 Yang-Mills-Einstein supergravity theories (YMESGT) coupled to tensor multiplets. The resulting 4D theories involve first order interactions among tensor and vector fields with mass terms. If the 5D gauge group, K, does not mix the 5D tensor and vector fields, the 4D tensor fields can be integrated out in favor of 4D vector fields and the resulting theory is dual to a standard 4D YMESGT. The gauge group has a block diagonal symplectic embedding and is a semi-direct product of the 5D gauge group K with a Heisenberg group of dimension (2P+1), where 2P is the number of tensor fields in five dimensions. There exists an infinite family of theories, thus obtained, whose gauge groups are pp-wave contractions of the simple noncompact groups of type SO*(2M). If, on the other hand, the 5D gauge group does mix the 5D tensor and vector fields, the resulting 4D theory is dual to a 4D YMESGT whose gauge group does, in general,NOT have a block diagonal symplectic emb...

  5. ON THE DIMENSION OF THE SET OF RIM PERTURBATIONS FOR OPTIMAL PARTITION INVARIANCE

    E-Print Network [OSTI]

    Greenberg, Harvey J.

    that if the dimension of the primal optimality region, dim(P ), is zero, this means it is an extreme point.

  6. HOW BEHAVE THE TYPICAL Lq-DIMENSIONS OF MEASURES? FREDERIC BAYART

    E-Print Network [OSTI]

    Boyer, Edmond

    . The Hausdorff and the packing dimension of E are denoted respectively by dimH(E) and dimP(E). Also, for a subset

  7. The inverse conductivity problem with power densities in dimension n2

    E-Print Network [OSTI]

    Franois Monard, Guillaume Bal

    2012-06-19T23:59:59.000Z

    Jun 19, 2012 ... The inverse conductivity problem with power densities in dimension n ? 2. Franois Monard Guillaume Bal. Dept. of Applied Physics and...

  8. Total termination of term rewriting is undecidable

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Total termination of term rewriting is undecidable Hans Zantema Utrecht University, Department Usually termination of term rewriting systems (TRS's) is proved by means of a monotonic well­founded order. If this order is total on ground terms, the TRS is called totally terminating. In this paper we prove that total

  9. Find More Like This Table 1. Key dimensions of

    E-Print Network [OSTI]

    p, 1 chart, 1 diagram, 9 graphs Document Type: Article Subject Terms: *EMISSIONS trading CARBON of economic burdens among nations; Influence of emissions trading on policy costs. Full Text Word Count: 10068 the reductions attained, and how policy costs may be influenced by emissions trading. We explore the sensitivity

  10. Endoglin potentiates nitric oxide synthesis to enhance definitive hematopoiesis

    E-Print Network [OSTI]

    Nasrallah, Rabab; Knezevic, Kathy; Thai, Thuan; Thomas, Shane R.; Gttgens, Berthold; Lacaud, Georges; Kouskoff, Valerie; Pimanda, John E.

    2015-05-15T23:59:59.000Z

    potential. We also show using an ES cell line engineered to over-express ENG under Doxycycline (Dox) control that ENG drives the acceleration of hemogenic commitment of FLK1+ cells and definitive hematopoiesis and that it does so by increasing nitric... (Kyba et al., 2002) in which ENG is linked to GFP via a 2A peptide to facilitate monitoring (Fig. S7). The addition of Dox at day 0 of ES cell differentiation resulted in the induction of GFP and sustained surface expression of ENG (Fig. S8A (i) - (ii...

  11. DOE Nuclear Weapon Reliability Definition: History, Description, and Implementation

    SciTech Connect (OSTI)

    Wright, D.L.; Cashen, J.J.; Sjulin, J.M.; Bierbaum, R.L.; Kerschen, T.J.

    1999-04-01T23:59:59.000Z

    The overarching goal of the Department of Energy (DOE) nuclear weapon reliability assessment process is to provide a quantitative metric that reflects the ability of the weapons to perform their intended function successfully. This white paper is intended to provide insight into the current and long-standing DOE definition of nuclear weapon reliability, which can be summarized as: The probability of achieving the specified yield, at the target, across the Stockpile-To-Target Sequence of environments, throughout the weapon's lifetime, assuming proper inputs.

  12. Internationally Standardized Cost Item Definitions for Decommissioning of Nuclear Installations

    SciTech Connect (OSTI)

    Lucien Teunckens; Kurt Pflugrad; Candace Chan-Sands; Ted Lazo

    2000-06-04T23:59:59.000Z

    The European Commission (EC), the International Atomic Energy Agency (IAEA), and the Organization for Economic Cooperation and Development/Nuclear Energy Agency (OECD/NEA) have agreed to jointly prepare and publish a standardized list of cost items and related definitions for decommissioning projects. Such a standardized list would facilitate communication, promote uniformity, and avoid inconsistency or contradiction of results or conclusions of cost evaluations for decommissioning projects carried out for specific purposes by different groups. Additionally, a standardized structure would also be a useful tool for more effective cost management. This paper describes actual work and result thus far.

  13. Computational costs of data definition at the quantum - classical interface

    E-Print Network [OSTI]

    Chris Fields

    2010-05-26T23:59:59.000Z

    Model-independent semantic requirements for user specification and interpretation of data before and after quantum computations are characterized. Classical computational costs of assigning classical data values to quantum registers and to run-time parameters passed across a classical-to-quantum application programming interface are derived. It is shown that the classical computational costs of data definition equal or exceed the classical computational cost of solving the problem of interest for all applications of quantum computing except computations defined over the integers and the simulation of linear systems with linear boundary conditions.

  14. Generalized definition of time delay in scattering theory

    E-Print Network [OSTI]

    C. Gerard; R. Tiedra de Aldecoa

    2006-09-15T23:59:59.000Z

    We advocate for the systematic use of a symmetrized definition of time delay in scattering theory. In two-body scattering processes, we show that the symmetrized time delay exists for arbitrary dilated spatial regions symmetric with respect to the origin. It is equal to the usual time delay plus a new contribution, which vanishes in the case of spherical spatial regions. We also prove that the symmetrized time delay is invariant under an appropriate mapping of time reversal. These results are also discussed in the context of classical scattering theory.

  15. DOE Seeks Comment on Definition of Showerhead | 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 DataDepartment of Energy Your Density Isn't Your Destiny: Theof"WaveInteractions andDefinition of Showerhead DOE Seeks Comment on

  16. Oregon - ORS 439.300 - Definitions | 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 PlantMunhall,Missouri: EnergyExcellenceOfficeOhio:OpowerOrchard Lake439.300 - Definitions

  17. Common Data Set 2013-2014 Common Data Set Definitions

    E-Print Network [OSTI]

    Kasman, Alex

    immediate and long-term academic and vocational goals. Accelerated program: Completion of a college program extra courses during the regular academic term. Admitted student: Applicant who is offered admission are re-entering after a lapse of a few years. American Indian or Alaska Native: A person having origins

  18. Numerical study of the mass spectrum in the 2D O(3) sigma model with a theta term

    E-Print Network [OSTI]

    B. Alles; A. Papa

    2007-11-12T23:59:59.000Z

    It has been conjectured that the mass spectrum of the O(3) non-linear sigma model with a theta term in 2 dimensions may possess an excited state, which decays when theta is lowered from pi below a critical value. Since the direct numerical investigation of the model is prevented by a sign problem, we try to infer some information on the mass spectrum at real theta by studying the model at imaginary theta via analytic continuation. A modified Swendsen-Wang cluster algorithm has been introduced to simulate the model with the theta term.

  19. Extra Dimensions: 3D and Time in PDF Documentation

    SciTech Connect (OSTI)

    Graf, Norman A.; /SLAC

    2011-11-10T23:59:59.000Z

    High energy physics is replete with multi-dimensional information which is often poorly represented by the two dimensions of presentation slides and print media. Past efforts to disseminate such information to a wider audience have failed for a number of reasons, including a lack of standards which are easy to implement and have broad support. Adobe's Portable Document Format (PDF) has in recent years become the de facto standard for secure, dependable electronic information exchange. It has done so by creating an open format, providing support for multiple platforms and being reliable and extensible. By providing support for the ECMA standard Universal 3D (U3D) file format in its free Adobe Reader software, Adobe has made it easy to distribute and interact with 3D content. By providing support for scripting and animation, temporal data can also be easily distributed to a wide audience. In this talk, we present examples of HEP applications which take advantage of this functionality. We demonstrate how 3D detector elements can be documented, using either CAD drawings or other sources such as GEANT visualizations as input. Using this technique, higher dimensional data, such as LEGO plots or time-dependent information can be included in PDF files. In principle, a complete event display, with full interactivity, can be incorporated into a PDF file. This would allow the end user not only to customize the view and representation of the data, but to access the underlying data itself.

  20. Dimensions of Usability: Cougaar, Aglets and Adaptive Agent Architecture (AAA)

    SciTech Connect (OSTI)

    Haack, Jereme N.; Cowell, Andrew J.; Gorton, Ian

    2004-06-20T23:59:59.000Z

    Research and development organizations are constantly evaluating new technologies in order to implement the next generation of advanced applications. At Pacific Northwest National Laboratory, agent technologies are perceived as an approach that can provide a competitive advantage in the construction of highly sophisticated software systems in a range of application areas. An important factor in selecting a successful agent architecture is the level of support it provides the developer in respect to developer support, examples of use, integration into current workflow and community support. Without such assistance, the developer must invest more effort into learning instead of applying the technology. Like many other applied research organizations, our staff are not dedicated to a single project and must acquire new skills as required, underlining the importance of being able to quickly become proficient. A project was instigated to evaluate three candidate agent toolkits across the dimensions of support they provide. This paper reports on the outcomes of this evaluation and provides insights into the agent technologies evaluated.

  1. Global Fits of the Minimal Universal Extra Dimensions Scenario

    SciTech Connect (OSTI)

    Bertone, Gianfranco; /Zurich U. /Paris, Inst. Astrophys.; Kong, Kyoungchul; /SLAC /Kansas U.; de Austri, Roberto Ruiz; /Valencia U., IFIC; Trotta, Roberto; /Imperial Coll., London

    2012-06-22T23:59:59.000Z

    In theories with Universal Extra-Dimensions (UED), the {gamma}{sub 1} particle, first excited state of the hypercharge gauge boson, provides an excellent Dark Matter (DM) candidate. Here we use a modified version of the SuperBayeS code to perform a Bayesian analysis of the minimal UED scenario, in order to assess its detectability at accelerators and with DM experiments. We derive in particular the most probable range of mass and scattering cross sections off nucleons, keeping into account cosmological and electroweak precision constraints. The consequences for the detectability of the {gamma}{sub 1} with direct and indirect experiments are dramatic. The spin-independent cross section probability distribution peaks at {approx} 10{sup -11} pb, i.e. below the sensitivity of ton-scale experiments. The spin-dependent cross-section drives the predicted neutrino flux from the center of the Sun below the reach of present and upcoming experiments. The only strategy that remains open appears to be direct detection with ton-scale experiments sensitive to spin-dependent cross-sections. On the other hand, the LHC with 1 fb{sup -1} of data should be able to probe the current best-fit UED parameters.

  2. Thermodynamics of SU(3) Gauge Theory in 2 + 1 Dimensions

    E-Print Network [OSTI]

    P. Bialas; L. Daniel; A. Morel; B. Petersson

    2008-07-21T23:59:59.000Z

    The pressure, and the energy and entropy densities are determined for the SU(3) gauge theory in $2 + 1$ dimensions from lattice Monte Carlo calculations in the interval $0.6 \\leq T/T_c \\leq 15$. The finite temperature lattices simulated have temporal extent $N_\\tau = 2, 4, 6$ and 8, and spatial volumes $N_S^2$ such that the aspect ratio is $N_S/N_\\tau = 8$. To obtain the thermodynamical quantities, we calculate the averages of the temporal plaquettes $P_\\tau$ and the spatial plaquettes $P_S$ on these lattices. We also need the zero temperature averages of the plaquettes $P_0$, calculated on symmetric lattices with $N_\\tau = N_S$. We discuss in detail the finite size ($N_S$-dependent) effects. These disappear exponentially. For the zero temperature lattices we find that the coefficient of $N_S$ in the exponent is of the order of the glueball mass. On the finite temperature lattices it lies between the two lowest screening masses. For the aspect ratio equal to eight, the systematic errors coming from the finite size effects are much smaller than our statistical errors. We argue that in the continuum limit, at high enough temperature, the pressure can be parametrized by the very simple formula $p=a-bT_c/T$ where $a$ and $b$ are two constants. Using the thermodynamical identities for a large homogeneous system, this parametrization then determines the other thermodynamical variables in the same temperature range.

  3. The sharp threshold for bootstrap percolation in all dimensions

    E-Print Network [OSTI]

    Jzsef Balogh; Bla Bollobs; Hugo Duminil-Copin; Robert Morris

    2011-02-24T23:59:59.000Z

    In r-neighbour bootstrap percolation on a graph G, a (typically random) set A of initially 'infected' vertices spreads by infecting (at each time step) vertices with at least r already-infected neighbours. This process may be viewed as a monotone version of the Glauber dynamics of the Ising model, and has been extensively studied on the d-dimensional grid $[n]^d$. The elements of the set A are usually chosen independently, with some density p, and the main question is to determine $p_c([n]^d,r)$, the density at which percolation (infection of the entire vertex set) becomes likely. In this paper we prove, for every pair $d \\ge r \\ge 2$, that there is a constant L(d,r) such that $p_c([n]^d,r) = [(L(d,r) + o(1)) / log_(r-1) (n)]^{d-r+1}$ as $n \\to \\infty$, where $log_r$ denotes an r-times iterated logarithm. We thus prove the existence of a sharp threshold for percolation in any (fixed) number of dimensions. Moreover, we determine L(d,r) for every pair (d,r).

  4. Gauge symmetries decrease the number of Dp-brane dimensions

    SciTech Connect (OSTI)

    Nikolic, B.; Sazdovic, B. [Institute of Physics, 11001 Belgrade, P.O. Box 57 (Serbia and Montenegro)

    2006-08-15T23:59:59.000Z

    It is known that the presence of the antisymmetric background field B{sub {mu}}{sub {nu}} leads to the noncommutativity of the Dp-brane manifold. The addition of the linear dilaton field in the form {phi}(x)={phi}{sub 0}+a{sub {mu}}x{sup {mu}} causes the appearance of the commutative Dp-brane coordinate x=a{sub {mu}}x{sup {mu}}. In the present article we show that for some particular choices of the background fields, a{sup 2}{identical_to}G{sup {mu}}{sup {nu}}a{sub {mu}}a{sub {nu}}=0 and a-tilde{sup 2}{identical_to}[(G-4BG{sup -1}B){sup -1}]{sup {mu}}{sup {nu}}a{sub {mu}}a{sub {nu}}=0, the local gauge symmetries appear in the theory. They turn some Neuman boundary conditions into the Dirichlet ones, and consequently decrease the number of the Dp-brane dimensions.

  5. The Compactification Problems of Additional Dimensions in Multidimensional Cosmological Theories

    E-Print Network [OSTI]

    Tamerlan Saidov

    2011-11-30T23:59:59.000Z

    Multidimensionality of our Universe is one of the most intriguing assumption in modern physics. It follows naturally from theories unifying different fundamental interactions with gravity, e.g. M/string theory. The idea has received a great deal of renewed attention over the last few years. However, it also brings a row of additional questions. According to observations the internal space should be static or nearly static at least from the time of primordial nucleosynthesis, otherwise the fundamental physical constants would vary. This means that at the present evolutionary stage of the Universe there are two possibilities: slow variation or compactification of internal space scale parameters. In many recent studies the problem of extra dimensions stabilization was studied for so-called ADD. Under these approaches a massive scalar fields (gravitons or radions) of external space-time can be presented as conformal excitations. In above mentioned works it was assumed that multidimensional action to be linear with respect to curvature. Although as follows from string theory, the gravity action needs to be extended to nonlinear one. In order to investigate effects of nonlinearity, in this Thesis a multidimensional Lagrangian will be studied, having the form L = f(R), where f(R) is an arbitrary smooth function of the scalar curvature.

  6. DIMENSIONS: Why do we need a new Data Handling architecture for Sensor Networks?

    E-Print Network [OSTI]

    Ganesan, Deepak

    DIMENSIONS: Why do we need a new Data Handling architecture for Sensor Networks? Deepak Ganesan incorporate their ex- treme resource constraints - energy, storage and processing - and spatio-temporal interpretation of the physical world in the design, cost model, and metrics of evaluation. We describe DIMENSIONS

  7. On ascertaining inductively the dimension of the joint kernel of certain commuting linear operators

    E-Print Network [OSTI]

    Shen, Zuowei

    On ascertaining inductively the dimension of the joint kernel of certain commuting linear operators), and a collection f`xgx2X of commuting linear maps on some linear space, the family of linear operators whose joint DMS-9000053, DMS-9102857. i #12;proposed running head: dimension of joint kernels Proofs should

  8. Fractal dimension and unscreened angles measured for radial viscous fingering Olivier Praud and Harry L. Swinney

    E-Print Network [OSTI]

    Texas at Austin. University of

    Fractal dimension and unscreened angles measured for radial viscous fingering Olivier Praud fractal patterns formed by the injection of air into oil in a thin 0.127 mm layer contained between two reaches r/b=900, are far larger than in past experiments. The fractal dimension D0 of the pattern

  9. Lower scaling dimensions of quarks and gluons and new energy scales

    E-Print Network [OSTI]

    F. Palumbo

    1996-05-08T23:59:59.000Z

    We consider the possibility that quarks and gluons, due to confinement, have lower scaling dimensions. In such a case there appear naturally new energy scales below which the standard theory is recovered. Arguments are given whereby for dimension $1/2$ of the quarks the theory is unitary also above these energy scales.

  10. Comment on the shape of Hydrogen equation in spaces of arbitrary dimension

    E-Print Network [OSTI]

    M. Ya. Amusia

    2015-02-20T23:59:59.000Z

    We note that presenting Hydrogen atom Schrodinger equation in the case of arbitrary dimensions require simultaneous modification of the Coulomb potential that only in three dimensions has the form Z/r . This was not done in a number of relatively recent papers [1-5]. Therefore some results obtained there seem to be doubtful. Some required considerations in the area are mentioned.

  11. A numerical study on the dimension of an extremely inhomogeneous matter distribution

    E-Print Network [OSTI]

    Cecilia B. M. H. Chirenti

    2005-08-10T23:59:59.000Z

    We have developed an algorithm that numericaly computes the dimension of an extremely inhomogeous matter distribution, given by a discrete hierarchical metric. With our results it is possible to analise how the dimension of the matter density tends to d = 3, as we consider larger samples.

  12. Packing Dimension and Cartesian Products Christopher J. Bishop1 Yuval Peres2

    E-Print Network [OSTI]

    Bishop, Christopher

    that (dimH (A B) dimH(B)) ~ dimP(A) ; (1) where "dimP " denotes packing dimension (see) showed that dimP(E F ) ~ dimH(E) + dimP(F ) : (3) Hu the "* *regular- ization" of this index the lower packing dimension, denoted dim_P, although it * *is

  13. A wideband fast multipole method for the Helmholtz equation in three dimensions

    E-Print Network [OSTI]

    Martinsson, Gunnar

    A wideband fast multipole method for the Helmholtz equation in three dimensions Hongwei Cheng of the Fast Multipole Method for the Helmholtz equation in three dimensions. It uni- fies previously existing Inc. All rights reserved. MSC: 65R99; 78A45 Keywords: Helmholtz equation; Fast multipole method

  14. A NEW FAST-MULTIPOLE ACCELERATED POISSON SOLVER IN TWO DIMENSIONS

    E-Print Network [OSTI]

    Greengard, Leslie

    A NEW FAST-MULTIPOLE ACCELERATED POISSON SOLVER IN TWO DIMENSIONS FRANK ETHRIDGE AND LESLIE­760 Abstract. We present an adaptive fast multipole method for solving the Poisson equation in two dimensions for highly nonuniform grids. Key words. fast multipole method, Poisson equation, adaptive refinement, fast

  15. Change of order for regular chains in positive dimension Xavier Dahan , Xin Jin

    E-Print Network [OSTI]

    Moreno Maza, Marc

    in dimension zero; Newton-Hensel lifting. Basic setup Let V be an irreducible variety of dimension r, defined, . . . , yr) kr , Ts(y, Z1, . . . , Zs) ... T1(y, Z1) Specialize and lift paradigm: intermediate computations. lift v in T; [dim. 1] 3. specialize w at a random value. [dim. 0] Algorithm Input. A regular chain Tin

  16. The wavelet dimension function for real dilations and dilations admitting non-MSF wavelets

    E-Print Network [OSTI]

    Speegle, Darrin

    The wavelet dimension function for real dilations and dilations admitting non-MSF wavelets Marcin Bownik and Darrin Speegle Abstract. The wavelet dimension function for arbitrary real dilations is defined and used to address several questions involving the existence of MRA wavelets and well

  17. Almost global existence for nonlinear wave equations in an exterior domain in two space dimensions

    E-Print Network [OSTI]

    Hideo Kubo

    2012-05-26T23:59:59.000Z

    In this paper we deal with the exterior problem for a system of nonlinear wave equations in two space dimensions, assuming that the initial data is small and smooth. We establish the same type of lower bound of the lifespan for the problem as that for the Cauchy problem, despite of the weak decay property of the solution in two space dimensions.

  18. WILD ALGEBRAS HAVE ONE-POINT EXTENSIONS OF REPRESENTATION DIMENSION AT LEAST FOUR

    E-Print Network [OSTI]

    Oppermann, Steffen

    WILD ALGEBRAS HAVE ONE-POINT EXTENSIONS OF REPRESENTATION DIMENSION AT LEAST FOUR STEFFEN OPPERMANN Abstract. We show that any wild algebra has a one-point exten- sion of representation dimension at least between tame and wild representation type is another way of saying "how infinite" the representation

  19. PHYSICAL REVIEW B 86, 184504 (2012) Topological excitonic superfluids in three dimensions

    E-Print Network [OSTI]

    Gilbert, Matthew

    PHYSICAL REVIEW B 86, 184504 (2012) Topological excitonic superfluids in three dimensions Youngseok exciton condensates within time-reversal invariant topological insulators in three spatial dimensions two-dimensional (2D) Dirac surface states separated by an insulating spacer.22­26 Yet the existence

  20. Lyapunov instability of rigid diatomic molecules in three dimensions: A simpler method Seungho Choe1

    E-Print Network [OSTI]

    Lee, EokKyun

    Lyapunov instability of rigid diatomic molecules in three dimensions: A simpler method Seungho Choe 2007 We present a method to calculate Lyapunov exponents of rigid diatomic molecules in three dimensions 12N-dimensional phase space . The spectra of Lyapunov exponents are obtained for 32 rigid diatomic

  1. THE LYAPUNOV AND DIMENSION SPECTRA OF EQUILIBRIUM MEASURES FOR CONFORMAL EXPANDING MAPS.

    E-Print Network [OSTI]

    THE LYAPUNOV AND DIMENSION SPECTRA OF EQUILIBRIUM MEASURES FOR CONFORMAL EXPANDING MAPS. HOWARD the dimension spectrum for equilibrium measures and the Lyapunov spectrum for conformal repellers. We explicitly compute the Lyapunov spectrum and show that it is a delta function. We observe that while the Lyapunov

  2. Process Dimension of Classical and Non-Commutative Processes Wolfgang Lohr1,2

    E-Print Network [OSTI]

    #12;Process Dimension of Classical and Non-Commutative Processes Wolfgang Lohr1,2 Arleta Szkola1-commutative generalisation, which we call NC-OOMs. A natural characteristic of a stochastic process in the context of classical OOM theory is the process dimension. We investigate its properties within the more general

  3. The chromospherically active binary star EI Eridani I. Absolute dimensions

    E-Print Network [OSTI]

    A. Washuettl; K. G. Strassmeier; T. Granzer; M. Weber; K. Olh

    2008-09-04T23:59:59.000Z

    We present a detailed determination of the astrophysical parameters of the chromospherically active binary star EI Eridani. Our new radial velocities allow to improve the set of orbital elements and reveal long-term variations of the barycentric velocity. A possible third-body orbit with a period of approximately 19 years is presented. Absolute parameters are determined in combination with the Hipparcos parallax. EI Eri's inclination angle of the rotational axis is confined to 56.0 plus/minus 4.5 degrees, its luminosity class IV is confirmed by its radius of 2.37 plus/minus 0.12 R_Sun. A comparison to theoretical stellar evolutionary tracks suggests a mass of 1.09 plus/minus 0.05 M_Sun and an age of approximately 6.15 Gyr. The present investigation is the basis of our long-term Doppler imaging study of its stellar surface.

  4. Advection dominated flows around black holes in two dimensions

    E-Print Network [OSTI]

    William H. Lee

    2000-11-07T23:59:59.000Z

    We show the results of two-dimensional, azimuthally symmetric simulations of advection dominated fluid flows around black holes. We use the SPH method, and the alpha-prescription for the viscosity, including all terms in the stress tensor. We have performed calculations with 0.001 < alpha < 0.2 and find strong circulation patterns in the flow, on spatial scales that depend on the magnitude of the viscosity.

  5. Efficient Scheme of Experimental Quantifying non-Markovianity in High-Dimension Systems

    E-Print Network [OSTI]

    S. -J. Dong; B. -H. Liu; Y. -N. Sun; Y. -J. Han; G. -C. Guo; Lixin He

    2015-01-29T23:59:59.000Z

    The non-Markovianity is a prominent concept of the dynamics of the open quantum systems, which is of fundamental importance in quantum mechanics and quantum information. Despite of lots of efforts, the experimentally measuring of non-Markovianity of an open system is still limited to very small systems. Presently, it is still impossible to experimentally quantify the non-Markovianity of high dimension systems with the widely used Breuer-Laine-Piilo (BLP) trace distance measure. In this paper, we propose a method, combining experimental measurements and numerical calculations, that allow quantifying the non-Markovianity of a $N$ dimension system only scaled as $N^2$, successfully avoid the exponential scaling with the dimension of the open system in the current method. After the benchmark with a two-dimension open system, we demonstrate the method in quantifying the non-Markovanity of a high dimension open quantum random walk system.

  6. HTGR Mechanistic Source Terms White Paper

    SciTech Connect (OSTI)

    Wayne Moe

    2010-07-01T23:59:59.000Z

    The primary purposes of this white paper are: (1) to describe the proposed approach for developing event specific mechanistic source terms for HTGR design and licensing, (2) to describe the technology development programs required to validate the design methods used to predict these mechanistic source terms and (3) to obtain agreement from the NRC that, subject to appropriate validation through the technology development program, the approach for developing event specific mechanistic source terms is acceptable

  7. Montana MCA 75-20-104, Policy and General Provisions Definitions...

    Open Energy Info (EERE)

    4, Policy and General Provisions Definitions for Major Facility Siting Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation:...

  8. The Local Dimension: a method to quantify the Cosmic Web

    E-Print Network [OSTI]

    Prakash Sarkar; Somnath Bharadwaj

    2008-12-09T23:59:59.000Z

    It is now well accepted that the galaxies are distributed in filaments, sheets and clusters all of which form an interconnected network known as the Cosmic Web. It is a big challenge to quantify the shapes of the interconnected structural elements that form this network. Tools like the Minkowski functionals which use global properties, though well suited for an isolated object like a single sheet or filament, are not suited for an interconnected network of such objects. We consider the Local Dimension $D$, defined through $N(R)=A R^D$, where $N(R)$ is the galaxy number count within a sphere of comoving radius $R$ centered on a particular galaxy, as a tool to locally quantify the shape in the neigbourhood of different galaxies along the Cosmic Web. We expect $D \\sim 1,2$ and 3 for a galaxy located in a filament, sheet and cluster respectively. Using LCDM N-body simulations we find that it is possible to determine $D$ through a power law fit to $N(R)$ across the length-scales 2 to $10 {\\rm Mpc}$ for $\\sim 33 %$ of the galaxies. We have visually identified the filaments and sheets corresponding to many of the galaxies with $D \\sim 1$ and 2 respectively. In several other situations the structure responsible for the $D$ value could not be visually identified, either due to its being tenuous or due to other dominating structures in the vicinity. We also show that the global distribution of the $D$ values can be used to visualize and interpret how the different structural elements are woven into the Cosmic Web.

  9. Human dimensions in cyber operations research and development priorities.

    SciTech Connect (OSTI)

    Forsythe, James Chris; Silva, Austin Ray; Stevens-Adams, Susan Marie; Bradshaw, Jeffrey [Institute for Human and Machine Cognition

    2012-11-01T23:59:59.000Z

    Within cyber security, the human element represents one of the greatest untapped opportunities for increasing the effectiveness of network defenses. However, there has been little research to understand the human dimension in cyber operations. To better understand the needs and priorities for research and development to address these issues, a workshop was conducted August 28-29, 2012 in Washington DC. A synthesis was developed that captured the key issues and associated research questions. Research and development needs were identified that fell into three parallel paths: (1) human factors analysis and scientific studies to establish foundational knowledge concerning factors underlying the performance of cyber defenders; (2) development of models that capture key processes that mediate interactions between defenders, users, adversaries and the public; and (3) development of a multi-purpose test environment for conducting controlled experiments that enables systems and human performance measurement. These research and development investments would transform cyber operations from an art to a science, enabling systems solutions to be engineered to address a range of situations. Organizations would be able to move beyond the current state where key decisions (e.g. personnel assignment) are made on a largely ad hoc basis to a state in which there exist institutionalized processes for assuring the right people are doing the right jobs in the right way. These developments lay the groundwork for emergence of a professional class of cyber defenders with defined roles and career progressions, with higher levels of personnel commitment and retention. Finally, the operational impact would be evident in improved performance, accompanied by a shift to a more proactive response in which defenders have the capacity to exert greater control over the cyber battlespace.

  10. Low dimension structures and devices for new generation photonic technology

    SciTech Connect (OSTI)

    Zhang, D. H.; Tang, D. Y.; Chen, T. P. [School of Electrical and Electronic Engineering, Nanyang Technological University, 679798 (Singapore); Mei, T. [Institute of Optoelectronic Materials and Technology, South China Normal University, Guangzhou 510631 (China); Yuan, X. C. [Institute of Modern Optics, Nankai University, Tianjin 300071 (China)

    2014-05-15T23:59:59.000Z

    Low dimensional structures and devices are the key technological building blocks for new generation of electronic and photonic technology. Such structures and devices show novel properties and can be integrated into systems for wide applications in many areas, including medical, biological and military and advancement of science. In this invited talk, I will present the main results achieved in our competitive research program which aims to explore the application of the mesoscopic structures in light source, manipulation and imaging and integrate them into advanced systems. In the light source aspect, we have for the first time developed graphene mode-locked lasers which are in the process of commercialization. Nanocrystal Si embedded in dielectrics was formed by ion implantation and subsequent annealing. Si light emitting devices with external quantum efficiency of about 2.910{sup ?3}% for visible emission were demonstrated at room temperature and the color of emitted light can be tuned electrically from violet to white by varying the injected current. In light manipulation, loss compensation of surface plasmon polaritons (SPPs) using quantum well (QW) gain media was studied theoretically and demonstrated experimentally. The SPP propagation length was effectively elongated several times through electrical pumping. One and two microring resonators based on silicon on insulator and III-V semiconductors technologies have been successfully fabricated and they can be used as filter and switch in the photonic circuit. In imaging, both SPP and low dimension structures are investigated and resolution far beyond diffraction limit in visible range has been realized. The integration of the components in the three aspects into complicated systems is on the way.

  11. University of Pittsburgh SUMMER TERM HOUSING APPLICATION

    E-Print Network [OSTI]

    Sibille, Etienne

    SUMMER TERM HOUSING/FOOD SERVICES CONTRACT/Food Services Contract (this "Contract") is made by and between the University of Pittsburgh

  12. Variable cosmological term - geometry and physics

    E-Print Network [OSTI]

    Irina Dymnikova

    2000-10-04T23:59:59.000Z

    We describe the dynamics of a cosmological term in the spherically symmetric case by an r-dependent second rank symmetric tensor \\Lambda_{\\mu\

  13. Project definition study for research facility access and science education

    SciTech Connect (OSTI)

    Rosen, S.P. [Univ. of Texas, Arlington, TX (United States). Coll. of Science; Teplitz, V.L. [Southern Methodist Univ., Dallas, TX (United States). Physics Dept.

    1994-10-01T23:59:59.000Z

    This UTA/SMU project definition study describes critical customer services and research programs which draw upon SSC assets to meet regional needs in two major components: Science Education; Academic/Small Business R and D Facility Access. The location of the SSC in Texas constituted a significant stimulus to R and D activities in Texas, encouraging new initiatives in high energy physics, as well as stimulating other areas of physics and related sciences. An important aspect of maximizing the utility of the investment in the SSC should be to re-allocate SSC assets in ways that maintain that momentum. This study addresses several ways to achieve that end, extending benefits to all of physics, the sciences in general and particularly, to science education.

  14. Building America Research Benchmark Definition: Updated December 20, 2007

    SciTech Connect (OSTI)

    Hendron, R.

    2008-01-01T23:59:59.000Z

    To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, DOE's Residential Buildings Program and NREL developed the Building America Research Benchmark in consultation with the Building America industry teams. The Benchmark is generally consistent with mid-1990s standard practice, as reflected in the Home Energy Rating System (HERS) Technical Guidelines (RESNET 2002), with additional definitions that allow the analyst to evaluate all residential end-uses, an extension of the traditional HERS rating approach that focuses on space conditioning and hot water. Unlike the reference homes used for HERS, EnergyStar, and most energy codes, the Benchmark represents typical construction at a fixed point in time so it can be used as the basis for Building America's multi-year energy savings goals without the complication of chasing a 'moving target'.

  15. Building America Research Benchmark Definition, Updated December 15, 2006

    SciTech Connect (OSTI)

    Hendron, R.

    2007-01-01T23:59:59.000Z

    To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, DOE's Residential Buildings Program and NREL developed the Building America Research Benchmark in consultation with the Building America industry teams. The Benchmark is generally consistent with mid-1990s standard practice, as reflected in the Home Energy Rating System (HERS) Technical Guidelines (RESNET 2002), with additional definitions that allow the analyst to evaluate all residential end-uses, an extension of the traditional HERS rating approach that focuses on space conditioning and hot water. Unlike the reference homes used for HERS, EnergyStar, and most energy codes, the Benchmark represents typical construction at a fixed point in time so it can be used as the basis for Building America's multi-year energy savings goals without the complication of chasing a ''moving target''.

  16. Building America Research Benchmark Definition: Updated August 15, 2007

    SciTech Connect (OSTI)

    Hendron, R.

    2007-09-01T23:59:59.000Z

    To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, DOE's Residential Buildings Program and NREL developed the Building America Research Benchmark in consultation with the Building America industry teams. The Benchmark is generally consistent with mid-1990s standard practice, as reflected in the Home Energy Rating System (HERS) Technical Guidelines (RESNET 2002), with additional definitions that allow the analyst to evaluate all residential end-uses, an extension of the traditional HERS rating approach that focuses on space conditioning and hot water. Unlike the reference homes used for HERS, EnergyStar, and most energy codes, the Benchmark represents typical construction at a fixed point in time so it can be used as the basis for Building America's multi-year energy savings goals without the complication of chasing a 'moving target'.

  17. Building America Research Benchmark Definition, Updated December 29, 2004

    SciTech Connect (OSTI)

    Hendron, R.

    2005-02-01T23:59:59.000Z

    To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, the U.S. Department of Energy (DOE) Residential Buildings Program and the National Renewable Energy Laboratory (NREL) developed the Building America Research Benchmark in consultation with the Building America industry teams. The Benchmark is generally consistent with mid-1990s standard practice, as reflected in the Home Energy Rating System (HERS) Technical Guidelines (RESNET 2002), with additional definitions that allow the analyst to evaluate all residential end-uses, an extension of the traditional HERS rating approach that focuses on space conditioning and hot water. A series of user profiles, intended to represent the behavior of a ''standard'' set of occupants, was created for use in conjunction with the Benchmark.

  18. CCPExecutiveSummary The Long-term

    E-Print Network [OSTI]

    Feigon, Brooke

    of intermittent renewable are built in Great Britain. The implications of the model for operating patternsCCPExecutiveSummary March 2011 The Long-term Impact of Wind Power W: www.uea.ac.uk/ccp T: +44 (0)1603 593715 A: UEA, Norwich, NR4 7TJ The Long-term Impact of Wind Power on Electricity Prices and Generating

  19. Winter Term University of Oldenburg (Core Provider)

    E-Print Network [OSTI]

    Habel, Annegret

    Evaluation Modul Winter Term Titel Wind Energy Wind Energy I Wind Tutorial Wind Energy Systems Wind Energy Conversion (Lab) Excursion/Wind/DEWI Modul Winter Term Titel Solar Energy PV Systems I Solar Thermal I Solar Tutorial PV Cell Characteristics (Lab) Solar

  20. SENATE COMMITTEE ON AWARDS TERMS OF REFERENCE

    E-Print Network [OSTI]

    Victoria, University of

    SENATE COMMITTEE ON AWARDS TERMS OF REFERENCE The committee shall: 1. Approve and recommend to Senate new or revised undergraduate and graduate student awards and the terms and conditions for those awards; 2. Consider and approve the student recipients nominated or recommended for undergraduate awards

  1. Bi23 BIOLOGY TUTORIALS WINTER TERM 2014

    E-Print Network [OSTI]

    Low, Steven H.

    Bi23 BIOLOGY TUTORIALS WINTER TERM 2014 SECTIONS 1 3 The Function and Regulation of Sleep (3. Huang, x3446, MC 156-29 #12;Bi23 BIOLOGY TUTORIALS WINTER TERM 2014 SECTIONS 4-6 Physical Principles crystallography and neutron scattering; nuclear magnetic resonance and magnetic resonance imaging; peptide and DNA

  2. Selection of dimensions for the accelerating chamber of a betatron with extraction of an electron beam

    SciTech Connect (OSTI)

    Chakhlov, V.L.; Kashovskii, V.V.; Pushin, V.S.

    1985-09-01T23:59:59.000Z

    The authors discuss the results of refinement of the dynamics of particles of a beam extracted from a betatron, a refinement which has made it possible to select the main dimensions of the accelerating chamber. Expressions are obtained which make it possible to determine the chamber dimensions and the profile of the extraction window from the distribution of the magnetic field of the betatron. It is shown that proper selection of the dimensions will increase the dose rate at the exit from the magnetic core of the accelerator.

  3. Extending the Standard Model Effective Field Theory with the Complete Set of Dimension-7 Operators

    E-Print Network [OSTI]

    Landon Lehman

    2014-12-26T23:59:59.000Z

    We present a complete list of the independent dimension-7 operators that are constructed using the Standard Model degrees of freedom and are invariant under the Standard Model gauge group. This list contains only 20 independent operators; far fewer than the 63 operators available at dimension 6. All of these dimension-7 operators contain fermions and violate lepton number, and 7 of the 20 violate baryon number as well. This result extends the Standard Model Effective Field Theory (SMEFT) and allows a more detailed exploration of the structure and properties of possible deformations from the Standard Model Lagrangian.

  4. Boom and Bust Inflation: A Graceful Exit via Compact Extra Dimensions

    SciTech Connect (OSTI)

    Brown, Adam R. [Physics Department, Columbia University, New York, New York 10027 (United States)

    2008-11-28T23:59:59.000Z

    A model of inflation is proposed in which compact extra dimensions allow a graceful exit without recourse to flat potentials or super-Planckian field values. Though bubbles of true vacuum are too sparse to uniformly reheat the Universe by colliding with each other, a compact dimension enables a single bubble to uniformly reheat by colliding with itself. This mechanism, which generates an approximately scale invariant perturbation spectrum, requires that inflation be driven by a bulk field, that vacuum decay be slow, and that the extra dimension be at least a hundred times larger than the false vacuum Hubble length.

  5. Statement of work for definitive design of the K basins integrated water treatment system project

    SciTech Connect (OSTI)

    Pauly, T.R., Westinghouse Hanford

    1996-07-16T23:59:59.000Z

    This Statement of Work (SOW) identifies the scope of work and schedule requirements for completing definitive design of the K Basins Integrated Water Treatment Systems (IWTS) Subproject. This SOW shall form the contractual basis between WHC and the Design Agent for the Definitive Design.

  6. Abduction in Logic Programming: A New Definition and an Abductive Procedure Based on Rewriting

    E-Print Network [OSTI]

    Lin, Fangzhen

    Abduction in Logic Programming: A New Definition and an Abductive Procedure Based on Rewriting, Canada T6G 2H1 Abstract We propose a new definition of abduction in logic programming, and contrast Abduction in logic programming In general, given a background theory T , and an observation q to explain

  7. Numerical Modeling of CIGS Solar Cells: Definition of the Baseline and

    E-Print Network [OSTI]

    Sites, James R.

    Thesis Numerical Modeling of CIGS Solar Cells: Definition of the Baseline and Explanation our supervision by Markus Gloeckler entitled "Numerical Modeling of CIGS Solar Cells: Definition. A three-layer structure, simulating a Cu(InGa)Se2 (CIGS) heterojunction solar cell, was set up using

  8. A dynamical definition of quasibound molecular clusters Sarah A. Harris and Ian J. Forda)

    E-Print Network [OSTI]

    Ford, Ian

    A dynamical definition of quasibound molecular clusters Sarah A. Harris and Ian J. Forda of a quasibound cluster are identified through a retrospective dynamical definition. The trajectory of a molecular is satisfied, however, at the instant that the energy of the departing molecule in the center of mass frame

  9. The definition of reaction coordinates for reaction-path dynamics Gregory A. Natanson

    E-Print Network [OSTI]

    Truong, Thanh N.

    The definition of reaction coordinates for reaction-path dynamics Gregory A. Natanson Computer only small-amplitude deviations from a minimum-energy path (MEP) through nuclear coordinate space. Thus. In choosing the coordinate system, the critical issue is the definition of the reaction coordinate. Along

  10. Lecture 16 : Definitions, theorems, proofs MTH299 Transition to Formal Mathematics Michigan State University 1 / 8

    E-Print Network [OSTI]

    Magyar, Peter

    ). MTH299 Transition to Formal Mathematics Michigan State University 2 / 8 #12;Group Axioms Definition299 Transition to Formal Mathematics Michigan State University 3 / 8 #12;Group Axioms Definition Is Z with + a group? MTH299 Transition to Formal Mathematics Michigan State University 3 / 8 #12;Group

  11. The Definition of Double Commutators and Consistency in Free Field Theory

    E-Print Network [OSTI]

    J. M. Pawlowski

    1996-10-09T23:59:59.000Z

    Within the framework of generalized functions a general consistent definition of double commutators is given. This definition respects the Jacobi identity even if the regularization is removed. The double commutator of fermionic currents is calculated in this limit. We show that BJL--type prescriptions and point--splitting prescriptions for calculating double commutators fail to give correct results in free field theory.

  12. Challenges in defining a radiologic and hydrologic source term for underground nuclear test centers, Nevada Test Site, Nye County, Nevada

    SciTech Connect (OSTI)

    Smith, D.K.

    1995-06-01T23:59:59.000Z

    The compilation of a radionuclide inventory for long-lived radioactive contaminants residual from nuclear testing provides a partial measure of the radiologic source term at the Nevada Test Site. The radiologic source term also includes potentially mobile short-lived radionuclides excluded from the inventory. The radiologic source term for tritium is known with accuracy and is equivalent to the hydrologic source term within the saturated zone. Definition of the total hydrologic source term for fission and activation products that have high activities for decades following underground testing involves knowledge and assumptions which are presently unavailable. Systematic investigation of the behavior of fission products, activation products and actinides under saturated or Partially saturated conditions is imperative to define a representative total hydrologic source term. This is particularly important given the heterogeneous distribution of radionuclides within testing centers. Data quality objectives which emphasize a combination of measurements and credible estimates of the hydrologic source term are a priority for near-field investigations at the Nevada Test Site.

  13. Dynamical D-Terms in Supergravity

    E-Print Network [OSTI]

    Valerie Domcke; Kai Schmitz; Tsutomu T. Yanagida

    2014-10-17T23:59:59.000Z

    Most phenomenological models of supersymmetry breaking rely on nonzero F-terms rather than nonzero D-terms. An important reason why D-terms are often neglected is that it turns out to be very challenging to realize D-terms at energies parametrically smaller than the Planck scale in supergravity. As we demonstrate in this paper, all conventional difficulties may, however, be overcome if the generation of the D-term is based on strong dynamics. To illustrate our idea, we focus on a certain class of vector-like SUSY breaking models that enjoy a minimal particle content and which may be easily embedded into more complete scenarios. We are then able to show that, upon gauging a global flavor symmetry, an appropriate choice of Yukawa couplings readily allows to dynamically generate a D-term at an almost arbitrary energy scale. This includes in particular the natural and consistent realization of D-terms around, above and below the scale of grand unification in supergravity, without the need for fine-tuning of any model parameters. Our construction might therefore bear the potential to open up a new direction for model building in supersymmetry and early universe cosmology.

  14. Fixed Points Structure & Effective Fractional Dimension for O(N) Models with Long-Range Interactions

    E-Print Network [OSTI]

    Nicolo Defenu; Andrea Trombettoni; Alessandro Codello

    2014-11-25T23:59:59.000Z

    We study O(N) models with power-law interactions by using functional renormalization group methods: we show that both in Local Potential Approximation (LPA) and in LPA' their critical exponents can be computed from the ones of the corresponding short-range O(N) models at an effective fractional dimension. In LPA such effective dimension is given by $D_{eff}=2d/\\sigma$, where d is the spatial dimension and $d+\\sigma$ is the exponent of the power-law decay of the interactions. In LPA' the prediction by Sak [Phys. Rev. B 8, 1 (1973)] for the critical exponent $\\eta$ is retrieved and an effective fractional dimension $D_{eff}'$ is obtained. Using these results we determine the existence of multicritical universality classes of long-range O(N) models and we present analytical predictions for the critical exponent $\

  15. Recurrence, dimension and entropy Ai-hua FAN De-jun FENG Jun WU

    E-Print Network [OSTI]

    Feng, De-Jun

    are then defined on . We shall talk about_the Hausdorff dimensio* *n dimH , the packing dimension dimP dimH E (ff) = dimP E (ff) = _____ max h~ logm ~2F

  16. A LOCAL DIMENSION TEST FOR NUMERICALLY APPROXIMATED POINTS ON ALGEBRAIC SETS

    E-Print Network [OSTI]

    Sommese, Andrew J.

    , denoted here as dimp(V ). This article presents a rigorous numerical local dimension test. The test (and computing the mult* *i- plicity if it is); 2.computing dimp(V ) for nonisolated

  17. A LOCAL DIMENSION TEST FOR NUMERICALLY APPROXIMATED POINTS ON ALGEBRAIC SETS

    E-Print Network [OSTI]

    Sommese, Andrew J.

    , denoted here as dimp(V ). This article presents a rigorous numerical local dimension test. The test, which- plicity if it is); 2. computing dimp(V ) for nonisolated points p; 3. finding all irreducible components

  18. A LOCAL DIMENSION TEST FOR NUMERICALLY APPROXIMATED POINTS ON ALGEBRAIC SETS

    E-Print Network [OSTI]

    Sommese, Andrew J.

    containing p, denoted here as dimp (V ). This article presents a rigorous numerical local dimension test the multi­ plicity if it is); 2. computing dimp (V ) for nonisolated points p; 3. finding all irreducible

  19. An Examination of Magical Beliefs as Predictors of Obsessive-Compulsive Symptom Dimensions

    E-Print Network [OSTI]

    Spears, Lauren

    2014-08-31T23:59:59.000Z

    study improved on methodological limitations of previous studies and used the Dimensional Obsessive-Compulsive Scale (DOCS) to conceptualize OCD as a dimensional construct. Relationships between magical belief constructs and four OCD symptom dimensions...

  20. Einstein-Born-Infeld on Taub-NUT Spacetime in 2k+2 Dimensions

    E-Print Network [OSTI]

    A. Khodam-Mohammadi

    2009-05-26T23:59:59.000Z

    We wish to construct solutions of Taub-NUT spacetime in Einstein-Born-Infeld gravity in even dimensions. Since Born-Infeld theory is a nonlinear electrodynamics theory, in leads to nonlinear differential equations. However a proper analytical solution was not obtain, we try to solve it numerically (by the Runge-Kotta method) with initial conditions coinciding with those of our previous work in Einstein-Maxwell gravity. We solve equations for 4, 6 and 8 dimensions and do data fitting by the least-squares method. For N=l=b=1, the metric turns to the NUT solution only in 8 dimensions, but in 4 and 6 dimensions the spacetime does not have any Nut solution.

  1. Title: Multimedia Kaleidoscope: New dimensions for the organization of social multimedia

    E-Print Network [OSTI]

    Title: Multimedia Kaleidoscope: New dimensions for the organization of social multimedia Responsible lab: Delft Multimedia Information Retrieval Lab Martha impression of a possible design for a multimedia Kaleidoscope Description

  2. Title: Multimedia Kaleidoscope: New dimensions for the organization of social multimedia

    E-Print Network [OSTI]

    Title: Multimedia Kaleidoscope: New dimensions for the organization of social multimedia Description: A multimedia kaleidoscope is a dynamic collection.g., blogs and Twitter content) and multimedia (e.g., Flickr and other image

  3. Rajesh Maingi adds a new strategic dimension to fusion and plasma...

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

    Rajesh Maingi adds a new strategic dimension to fusion and plasma physics research By John Greenwald March 14, 2013 Tweet Widget Google Plus One Share on Facebook Rajesh Maingi...

  4. HAUSDORFF DIMENSION, ANALYTIC SETS AND TRANSCENDENCE G. A. EDGAR AND CHRIS MILLER

    E-Print Network [OSTI]

    Edgar, Gerald

    HAUSDORFF DIMENSION, ANALYTIC SETS AND TRANSCENDENCE G. A. EDGAR AND CHRIS MILLER Abstract. Every, is the infimum of all s # 0 such that H s (A) = 0. (See any of Edgar [5], Falconer [7], Mattila [9] or [11

  5. A New Dimension in Access Control: Studying Maintenance Engineering across Organizational

    E-Print Network [OSTI]

    A New Dimension in Access Control: Studying Maintenance Engineering across Organizational Inter-organizational cooperation has specific requirements for access control. The paper presents be extended to realize additional mechanisms for access control with little efforts. Keywords inter-organizational

  6. More on critical collapse of axion-dilaton system in dimension four

    SciTech Connect (OSTI)

    lvarez-Gaum, Luis [Theory Group, Physics Department, CERN, CH-1211, Geneva 23 (Switzerland); Hatefi, Ehsan, E-mail: Luis.Alvarez-Gaume@cern.ch, E-mail: ehsan.hatefi@cern.ch [International Centre for Theoretical Physics, Strada Costiera 11, Trieste (Italy)

    2013-10-01T23:59:59.000Z

    We complete our previous study of critical gravitational collapse in the axion-dilaton system by analysing the hyperbolic and parabolic ansaetze. As could be expected, the corresponding Choptuik exponents in four-dimensions differ from the elliptic case.

  7. Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider

    E-Print Network [OSTI]

    Bauer, Gerry P.

    A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. No excess of events above the standard model expectation is observed using a ...

  8. On the Dimensioning of Cellular OFDMA Networks Jean-Marc Kelifa

    E-Print Network [OSTI]

    Boyer, Edmond

    On the Dimensioning of Cellular OFDMA Networks Jean-Marc Kelifa , Marceau Coupechoux,b , Philippe.kelif@orange-ftgroup.com (Jean-Marc Kelif), coupecho@enst.fr (Marceau Coupechoux), godlewsk@enst.fr (Philippe Godlewski) Preprint

  9. Gauss-Bonnet Term on Vacuum Decay

    E-Print Network [OSTI]

    Rong-Gen Cai; Bin Hu; Seoktae Koh

    2008-11-20T23:59:59.000Z

    We study the effect of the Gauss-Bonnet term on vacuum decay process in the Coleman-De Luccia formalism. The Gauss-Bonnet term has an exponential coupling with the real scalar field, which appears in the low energy effective action of string theories. We calculate numerically the instanton solution, which describes the process of vacuum decay, and obtain the critical size of bubble. We find that the Gauss-Bonnet term has a nontrivial effect on the false vacuum decay, depending on the Gauss-Bonnet coefficient.

  10. Seven-dimensional gravity with topological terms

    SciTech Connect (OSTI)

    Lue, H. [China Economics and Management Academy Central, University of Finance and Economics, Beijing 100081 (China); Institute for Advanced Study, Shenzhen University, Nanhai Ave 3688, Shenzhen 518060 (China); Pang Yi [Key Laboratory of Frontiers in Theoretical Physics Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 (China)

    2010-04-15T23:59:59.000Z

    We construct new seven-dimensional gravity by adding two topological terms to the Einstein-Hilbert action. For a certain choice of the coupling constants, these terms exist naturally in seven-dimensional gauged supergravity from the S{sup 4} reduction of eleven-dimensional supergravity with the R{sup 4} corrections. We derive the full set of the equations of motion. We find that the static spherically-symmetric black holes are unmodified by the topological terms. We obtain squashed AdS{sub 7}, and also squashed seven spheres and Q{sup 111} spaces in Euclidean signature.

  11. Mechanistic facility safety and source term analysis

    SciTech Connect (OSTI)

    PLYS, M.G.

    1999-06-09T23:59:59.000Z

    A PC-based computer program was created for facility safety and source term analysis at Hanford The program has been successfully applied to mechanistic prediction of source terms from chemical reactions in underground storage tanks, hydrogen combustion in double contained receiver tanks, and proccss evaluation including the potential for runaway reactions in spent nuclear fuel processing. Model features include user-defined facility room, flow path geometry, and heat conductors, user-defined non-ideal vapor and aerosol species, pressure- and density-driven gas flows, aerosol transport and deposition, and structure to accommodate facility-specific source terms. Example applications are presented here.

  12. Spring Term 2010 Assessment Report Page 1 Spring Term 2010: Assessment of the Learning Outcomes

    E-Print Network [OSTI]

    Marsh, David

    focused on the student learning experience, particularly the teaching methods employed in #12;Spring Term carries many aspects with it, but our main focus has always been on our central learning objectiveSpring Term 2010 Assessment Report Page 1 Spring Term 2010: Assessment of the Learning Outcomes

  13. Short-term and long-term reliability studies in the deregulated power systems

    E-Print Network [OSTI]

    Li, Yishan

    2006-04-12T23:59:59.000Z

    for the new structure to maintain system reliability. Power system reliability is comprised of two basic components, adequacy and security. In terms of the time frame, power system reliability can mean short-term reliability or long-term reliability. Short...

  14. On the Fractal Dimension of Isosurfaces Marc Khoury and Rephael Wenger

    E-Print Network [OSTI]

    Wenger, Rephael

    On the Fractal Dimension of Isosurfaces Marc Khoury and Rephael Wenger 2 2.2 2.4 2.6 2.8 3 0 50 100 150 200 250 1 10 100 1000 10000 0 50 100 150 200 250 Fractal dimension Topological Noise (Number of Components) Isovalue 60 Isovalue 68 Isovalue 72 Fig. 1: Visible male data set (www.stereofx.org): Fractal box

  15. Fractal dimension of the topological charge density distribution in SU(2) lattice gluodynamics

    E-Print Network [OSTI]

    P. V. Buividovich; T. Kalaydzhyan; M. I. Polikarpov

    2012-10-21T23:59:59.000Z

    We study the effect of cooling on the spatial distribution of the topological charge density in quenched SU(2) lattice gauge theory with overlap fermions. We show that as the gauge field configurations are cooled, the Hausdorff dimension of regions where the topological charge is localized gradually changes from d = 2..3 towards the total space dimension. Therefore, the cooling procedure destroys some of the essential properties of the topological charge distribution.

  16. POWER-LAW BOUNDS ON TRANSFER MATRICES AND QUANTUM DYNAMICS IN ONE DIMENSION

    E-Print Network [OSTI]

    the proof of [20] that + #21; 1 d dimP (#22; ) (7) (with d #21; 1 in the case of l 2 (Z d ) and d = 1 , and dimH (#22;); dimP (#22;) denote the (upper) Hausdor#11; and packing dimensions of the measure #22 "!0 log #22;([E "; E + "]) log " ; E 2 supp #22;: For the packing dimension, we have dimP (#22;) = #22

  17. Kitchen layout and dimensions for the ambulatory and wheelchair-bound elderly

    E-Print Network [OSTI]

    Resendiz, Anita Janice

    1985-01-01T23:59:59.000Z

    KITCHEN LAYOUT AND DIMENSIONS FOR THE Al&ULATORY AND WHEELCHAIR-BOUND ELDERLY A Thesis ANITA JANICE RESENDIZ Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August ' 9BS Major Subject: Industrial Engineering KITCHEN LAYOUT AND DIMENSIONS FOR THE AMBULATORY AND WHEELCHAIR-BOUND ELDERLY A Thesis by ANITA JANICE RESENDIZ Approved as to style and content by: R. D. uchings n (Chairman) G. Bayliss...

  18. Rotating charged hairy black hole in (2+1) dimensions and particle acceleration

    E-Print Network [OSTI]

    J. Sadeghi; B. Pourhassan; H. Farahani

    2013-10-26T23:59:59.000Z

    In this paper we construct rotating charged hairy black hole in (2+1) dimensions for infinitesimal black hole charge and rotation parameters. Then we consider this black hole as particle accelerator and calculate the center-of-mass energy of two colliding test particles near the rotating charged hairy black hole in (2+1) dimensions. As we expected, the center-of-mass energy has infinite value.

  19. Entanglement Entropy of Gapped Phases and Topological Order in Three dimensions

    E-Print Network [OSTI]

    Tarun Grover; Ari M. Turner; Ashvin Vishwanath

    2011-08-19T23:59:59.000Z

    We discuss entanglement entropy of gapped ground states in different dimensions, obtained on partitioning space into two regions. For trivial phases without topological order, we argue that the entanglement entropy may be obtained by integrating an `entropy density' over the partition boundary that admits a gradient expansion in the curvature of the boundary. This constrains the expansion of entanglement entropy as a function of system size, and points to an even-odd dependence on dimensionality. For example, in contrast to the familiar result in two dimensions, a size independent constant contribution to the entanglement entropy can appear for trivial phases in any odd spatial dimension. We then discuss phases with topological entanglement entropy (TEE) that cannot be obtained by adding local contributions. We find that in three dimensions there is just one type of TEE, as in two dimensions, that depends linearly on the number of connected components of the boundary (the `zeroth Betti number'). In D > 3 dimensions, new types of TEE appear which depend on the higher Betti numbers of the boundary manifold. We construct generalized toric code models that exhibit these TEEs and discuss ways to extract TEE in D >=3.

  20. Term: Spring 2013 University of Pittsburgh

    E-Print Network [OSTI]

    Sibille, Etienne

    Term: Spring 2013 1 University of Pittsburgh HOUSING/DINING SERVICES CONTRACT This Housing/Dining Services Contract (this "Contract") is made by and between the University of Pittsburgh

  1. Term: Spring 2012 University of Pittsburgh

    E-Print Network [OSTI]

    Sibille, Etienne

    Term: Spring 2012 1 University of Pittsburgh HOUSING/DINING SERVICES CONTRACT This Housing/Dining Services Contract (this "Contract") is made by and between the University of Pittsburgh

  2. Long Term Roadmap for DPNC September 2003

    E-Print Network [OSTI]

    Schibler, Ueli

    Long Term Roadmap for DPNC September 2003 Particle physics is the science to study, at the most experiments, we will organize the roadmap in three paths (the experiments in bold type are those in which

  3. Term Structure Dynamics with Macroeconomic Factors

    E-Print Network [OSTI]

    Park, Ha-Il

    2011-02-22T23:59:59.000Z

    Affine term structure models (ATSMs) are known to have a trade-off in predicting future Treasury yields and fitting the time-varying volatility of interest rates. First, I empirically study the role of macroeconomic variables ...

  4. Long-term care and the elderly

    E-Print Network [OSTI]

    Coe, Norma B

    2005-01-01T23:59:59.000Z

    Long-term care expenditures represent one of the largest uninsured financial risks facing the elderly. Medicaid provides incomplete insurance against these costs: unlimited nursing home benefits with a deductible equal to ...

  5. Short-Term Energy Outlook September 2013

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

    day Forecast -0.9 2012 2013 2014 OPEC countries North America Russia and Caspian Sea Latin America North Sea Other Non-OPEC Source: Short-Term Energy Outlook, September 2013 -1...

  6. Everything But: Exploring Definitions of Sexual Outercourse Among Undergraduate Students

    E-Print Network [OSTI]

    Menn, Mindy Alison

    2011-02-22T23:59:59.000Z

    was conducted at a large Southern university. For this phase, 426 students responded to a 34-item online survey. After providing basic demographic information, students were asked to select the single term to describe sexual behaviors that do not include penile...

  7. Architectural definition of an environment suitable for contemporary art

    E-Print Network [OSTI]

    Leclerc, Pierre E. (Pierre Emile)

    1990-01-01T23:59:59.000Z

    The title of this thesis implies a critical consideration of the subject. i.e how do we create. show and consume the product of art today. which environment suits it the best and why. The term itself, contemporary art is ...

  8. Implementing an apparent-horizon finder in three dimensions

    E-Print Network [OSTI]

    Thomas W. Baumgarte; Gregory B. Cook; Mark A. Scheel; Stuart L. Shapiro; Saul A. Teukolsky

    1996-06-06T23:59:59.000Z

    Locating apparent horizons is not only important for a complete understanding of numerically generated spacetimes, but it may also be a crucial component of the technique for evolving black-hole spacetimes accurately. A scheme proposed by Libson et al., based on expanding the location of the apparent horizon in terms of symmetric trace-free tensors, seems very promising for use with three-dimensional numerical data sets. In this paper, we generalize this scheme and perform a number of code tests to fully calibrate its behavior in black-hole spacetimes similar to those we expect to encounter in solving the binary black-hole coalescence problem. An important aspect of the generalization is that we can compute the symmetric trace-free tensor expansion to any order. This enables us to determine how far we must carry the expansion to achieve results of a desired accuracy. To accomplish this generalization, we describe a new and very convenient set of recurrence relations which apply to symmetric trace-free tensors.

  9. Uranium-233 waste definition: Disposal options, safeguards, criticality control, and arms control

    SciTech Connect (OSTI)

    Forsberg, C.W.; Storch, S.N. [Oak Ridge National Lab., TN (United States); Lewis, L.C. [Lockheed Martin Idaho Technology Co., Idaho Falls, ID (United States). Idaho National Engineering and Environmental Lab.

    1998-07-07T23:59:59.000Z

    The US investigated the use of {sup 233}U for weapons, reactors, and other purposes from the 1950s into the 1970s. Based on the results of these investigations, it was decided not to use {sup 233}U on a large scale. Most of the {sup 233}U-containing materials were placed in long-term storage. At the end of the cold war, the US initiated, as part of its arms control policies, a disposition program for excess fissile materials. Other programs were accelerated for disposal of radioactive wastes placed in storage during the cold war. Last, potential safety issues were identified related to the storage of some {sup 233}U-containing materials. Because of these changes, significant activities associated with {sup 233}U-containing materials are expected. This report is one of a series of reports to provide the technical bases for future decisions on how to manage this material. A basis for defining when {sup 233}U-containing materials can be managed as waste and when they must be managed as concentrated fissile materials has been developed. The requirements for storage, transport, and disposal of radioactive wastes are significantly different than those for fissile materials. Because of these differences, it is important to classify material in its appropriate category. The establishment of a definition of what is waste and what is fissile material will provide the guidance for appropriate management of these materials. Wastes are defined in this report as materials containing sufficiently small masses or low concentrations of fissile materials such that they can be managed as typical radioactive waste. Concentrated fissile materials are defined herein as materials containing sufficient fissile content such as to warrant special handling to address nuclear criticality, safeguards, and arms control concerns.

  10. 396 Solutions Manual x Fluid Mechanics, Fifth Edition Solution: (a) Since all terms in the equation contain C, we establish the dimensions of k and

    E-Print Network [OSTI]

    Bahrami, Majid

    terminal (constant) fall velocity be, from Fig. 5.3a? Solution: For gasoline at 20qC, take U | 680 kg/m3.49 The sphere in Prob. 5.48 is dropped in gasoline at 20qC. Ignoring its acceleration phase, what will its and P | 2.92E4 kg/ms. For steel take U | 7800 kg/m3. Then, in "terminal" velocity, the net weight equals

  11. National Biomedical Tracer Facility (NBTF). Project definition study: Phase I

    SciTech Connect (OSTI)

    Lagunas-Solar, M.C.

    1995-02-15T23:59:59.000Z

    This report describes a five-year plan for the construction and commissioning of a reliable and versatile NBTF facility for the production of high-quality, high-yield radioisotopes for research, biomedical, and industrial applications. The report is organized in nine sections providing, in consecutive order, responses to the nine questions posed by the U.S. Department of Energy in its solicitation for the NBTF Project Definition Study. In order to preserve direct correspondence (e.g., Sec. 3 = 3rd item), this Introduction is numbered {open_quotes}0.{close_quotes} Accelerator and facility designs are covered in Section 1 (Accelerator Design) and Section 2 (Facility Design). Preliminary estimates of capital costs are detailed in Section 3 (Design and Construction Costs). Full licensing requirements, including federal, state, and local ordinances, are discussed in Section 4 (Permits). A plan for the management of hazardous materials to be generated by NBTF is presented in Section 5 (Waste Management). An evaluation of NBTF`s economic viability and its potential market impact is detailed in Section 6(Business Plan), and is complemented by the plans in Section 7 (Operating Plan) and Section 8 (Radioisotope Plan). Finally, a plan for NBTF`s research, education, and outreach programs is presented in Section 9 (Research and Education Programs).

  12. Guidelines for ground motion definition for the eastern United States

    SciTech Connect (OSTI)

    Gwaltney, R.C.; Aramayo, G.A.; Williams, R.T.

    1985-06-01T23:59:59.000Z

    Guidelines for the determination of earthquake ground motion definition for the eastern United States are established here. Both far-field and near-field guidelines are given. The guidelines were based on an extensive review of the current procedures for specifying ground motion in the United States. Both empirical and theoretical procedures were used in establishing the guidelines because of the low seismicity in the eastern United States. Only a few large- to great-sized earthquakes (M/sub s/ > 7.5) have occurred in this region, no evidence of tectonic surface ruptures related to historic or Holocene earthquakes has been found, and no currently active plate boundaries of any kind are known in this region. Very little instrumented data have been gathered in the East. Theoretical procedures are proposed so that in regions of almost no data, a reasonable level of seismic ground motion activity can be assumed. The guidelines are to be used to develop the safe shutdown earthquake (SSE). A new procedure for establishing the operating basis earthquake (OBE) is proposed, in particular for the eastern United States. The OBE would be developed using a probabilistic assessment of the geological conditions and the recurrence of seismic events at a site. These guidelines should be useful in development of seismic design requirements for future reactors. 17 refs., figs., tabs.

  13. Identification and definition of unbundled electric generation and transmission services

    SciTech Connect (OSTI)

    Kirby, B.; Hirst, E.; Vancoevering, J.

    1995-03-01T23:59:59.000Z

    State and federal regulators, private and public utilities, large and small customers, power brokers and marketers, and others are engaged in major debates about the future structure of the electric industry. Although the outcomes are far from certain, it seems clear that customers will have much greater choices about the electric services they purchase and from whom they buy these services. This report examines the ``ancillary`` services that are today buried within the typical vertically integrated utility. These ancillary services support and make possible the provision of the basic services of generating capacity, energy supply, and power delivery. These ancillary services include: Management of generating units; reserve generating capacity to follow variations in customer loads, to provide capacity and energy when generating units or transmission lines suddenly fall, to maintain electric-system stability, and to provide local-area security; transmission-system monitoring and control; replacement of real power and energy losses; reactive-power management and voltage regulation; transmission reserves; repair and maintenance of the transmission network; metering, billing, and communications; and assurance of appropriate levels of power quality. Our focus in this report, the first output from a larger Oak Ridge National Laboratory project, is on identification and definition of these services. Later work in this project will examine more closely the costs and pricing options for each service.

  14. After the definition of Cloud Computing ... What has NIST done in the Cloud space lately? What's next?

    E-Print Network [OSTI]

    After the definition of Cloud Computing ... What has NIST done in the Cloud space lately? What Publication SP 500-292: Cloud Computing Reference Architecture. This document takes the NIST definition of Cloud Computing a step further by expanding the definition into a logical representation of the cloud

  15. Definitions and constructions Homotopy theory Maps Golod 25th Nordic and 1st British-Nordic congress of

    E-Print Network [OSTI]

    Dundas, Bjørn Ian

    Definitions and constructions Homotopy theory Maps Golod 25th Nordic and 1st British of Mathematicians #12;Definitions and constructions Homotopy theory Maps Golod TORIC TOPOLOGY from a homotopy of Mathematicians #12;Definitions and constructions Homotopy theory Maps Golod Combinatorics: Simplicial complex V

  16. A Definition of the Degree of Ionization of a Micelle Based on Its Aggregation Number Barney L. Bales*

    E-Print Network [OSTI]

    Bales, Barney

    the measurement of R on the basis of this definition. Theory We employ the language of the pseudophase ionA Definition of the Degree of Ionization of a Micelle Based on Its Aggregation Number Barney L and added salt concentrations yielding the same value of Caq leads to a straightforward definition of R. Any

  17. Theory and Applications of Categories, Vol. 10, No. 1, 2002, pp. 170. A SURVEY OF DEFINITIONS OF n-CATEGORY

    E-Print Network [OSTI]

    Chapman, Robin

    Theory and Applications of Categories, Vol. 10, No. 1, 2002, pp. 1­70. A SURVEY OF DEFINITIONS OF n-CATEGORY TOM LEINSTER ABSTRACT. Many people have proposed definitions of `weak n-category'. Ten of them are presented here. Each definition is given in two pages, with a further two pages on what happens when n 2

  18. The Hamiltonian formulation of N-bein, Einstein-Cartan, gravity in any dimension: the Progress Report (Extended version of a talk given on CAIMS-2009, June 11-14, London, Canada)

    E-Print Network [OSTI]

    N. Kiriushcheva; S. V. Kuzmin

    2009-07-09T23:59:59.000Z

    The Hamiltonian formulation of N-bein, Einstein-Cartan, gravity, using its first order form in any dimension higher than two, is analyzed. This Hamiltonian formulation allows to explicitly show where peculiarities of three dimensional case (\\textit{A.M.Frolov et al, 0902.0856 [gr-qc]}) occur and make a conjecture, based on presented in this report results, that there is one general for \\textit{all} dimensions characteristic of N-bein formulation of gravity: after elimination of second class constraints the algebra of Poisson brackets among remaining first class secondary constraints is the Poincare algebra and in all dimensions N-bein, Cartan-Einstein, gravity \\textit{is the Poincare gauge theory}. The gauge symmetry corresponding to the algebra of first class constraints has two parameters - rotational (Lorentz) and translational. Translational invariance is common to all dimensions but some terms in general expressions for gauge transformations of N-beins and connections are zero in a particular, three dimensional, case. The proof of our conjecture is outlined in detail. Some straightforward but tedious calculations remain to be completed to call our conjecture - a theorem and will be reported later.

  19. DIMENSION AS A KEY TO THE NEUTRINO MECHANISM OF CORE-COLLAPSE SUPERNOVA EXPLOSIONS

    SciTech Connect (OSTI)

    Nordhaus, J.; Burrows, A. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Almgren, A.; Bell, J., E-mail: nordhaus@astro.princeton.ed, E-mail: burrows@astro.princeton.ed, E-mail: ASAlmgren@lbl.go, E-mail: JBBell@lbl.go [Computational Research Division, Lawrence Berkeley National Lab, Berkeley, CA 94720 (United States)

    2010-09-01T23:59:59.000Z

    We explore the dependence on spatial dimension of the viability of the neutrino heating mechanism of core-collapse supernova explosions. We find that the tendency to explode is a monotonically increasing function of dimension, with three dimensions (3D) requiring {approx}40%-50% lower driving neutrino luminosity than one dimension and {approx}15%-25% lower driving neutrino luminosity than two dimensions (2D). Moreover, we find that the delay to explosion for a given neutrino luminosity is always shorter in 3D than 2D, sometimes by many hundreds of milliseconds. The magnitude of this dimensional effect is much larger than the purported magnitude of a variety of other effects, such as nuclear burning, inelastic scattering, or general relativity, which are sometimes invoked to bridge the gap between the current ambiguous and uncertain theoretical situation and the fact of robust supernova explosions. Since real supernovae occur in three dimensions, our finding may be an important step toward unraveling one of the most problematic puzzles in stellar astrophysics. In addition, even though in 3D, we do see pre-explosion instabilities and blast asymmetries, unlike the situation in 2D, we do not see an obvious axially symmetric dipolar shock oscillation. Rather, the free energy available to power instabilities seems to be shared by more and more degrees of freedom as the dimension increases. Hence, the strong dipolar axisymmetry seen in 2D and previously identified as a fundamental characteristic of the shock hydrodynamics may not survive in 3D as a prominent feature.

  20. Unified N=2 Maxwell-Einstein and Yang-Mills-Einstein Supergravity Theories in Four Dimensions

    E-Print Network [OSTI]

    M. Gunaydin; S. McReynolds; M. Zagermann

    2005-07-22T23:59:59.000Z

    We study unified N=2 Maxwell-Einstein supergravity theories (MESGTs) and unified Yang-Mills Einstein supergravity theories (YMESGTs) in four dimensions. As their defining property, these theories admit the action of a global or local symmetry group that is (i) simple, and (ii) acts irreducibly on all the vector fields of the theory, including the ``graviphoton''. Restricting ourselves to the theories that originate from five dimensions via dimensional reduction, we find that the generic Jordan family of MESGTs with the scalar manifolds [SU(1,1)/U(1)] X [SO(2,n)/SO(2)X SO(n)] are all unified in four dimensions with the unifying global symmetry group SO(2,n). Of these theories only one can be gauged so as to obtain a unified YMESGT with the gauge group SO(2,1). Three of the four magical supergravity theories defined by simple Euclidean Jordan algebras of degree 3 are unified MESGTs in four dimensions. Two of these can furthermore be gauged so as to obtain 4D unified YMESGTs with gauge groups SO(3,2) and SO(6,2), respectively. The generic non-Jordan family and the theories whose scalar manifolds are homogeneous but not symmetric do not lead to unified MESGTs in four dimensions. The three infinite families of unified five-dimensional MESGTs defined by simple Lorentzian Jordan algebras, whose scalar manifolds are non-homogeneous, do not lead directly to unified MESGTs in four dimensions under dimensional reduction. However, since their manifolds are non-homogeneous we are not able to completely rule out the existence of symplectic sections in which these theories become unified in four dimensions.