National Library of Energy BETA

Sample records for factors metric prefixes

  1. Energy Information Administration/Monthly Energy Review January 2001 163 Multiple Prefix Symbol

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    Prefixes Energy Source Original Unit multiplied by Conversion Factor equals Final Unit Petroleum barrelsEnergy Information Administration/Monthly Energy Review January 2001 163 Unit Multiple Prefix feet (ft3 ) a Exact conversion. b Calculated by the Energy Information Administration. Source: U

  2. Automatic Routing Using Multiple Prefix Labels

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.; Ghosh, R.

    2012-01-01

    Automatic Routing Using Multiple Prefix Labels Rumi GhoshWe present Multi-label Automatic Routing (MAR), the firstthe routing is automatic based on the positional labels of

  3. Riemannian Geometry Based on the Takagi's Factorization of the Metric Tensor

    E-Print Network [OSTI]

    Juan Mendez

    2015-07-05

    The Riemannian geometry is one of the main theoretical pieces in Modern Mathematics and Physics. The study of Riemann Geometry in the relevant literature is performed by using a well defined analytical path. Usually it starts from the concept of metric as the primary concept and by using the connections as an intermediate geometric object, it is achieved the curvature and its properties. This paper presents a different analytical path to analyze the Riemannian geometry. It is based on a set of intermediate geometric objects obtained from the Takagi's factorization of the metric tensor. These intermediate objects allow a new viewpoint for the analysis of the geometry, provide conditions for the curved vs. flat manifolds, and also provide a new decomposition of the curvature tensor in canonical parts, which can be useful for Theoretical Physics.

  4. A Taxonomy of Parallel Prefix Networks David Harris

    E-Print Network [OSTI]

    Harris, David Money

    A Taxonomy of Parallel Prefix Networks David Harris Harvey Mudd College / Sun Microsystems of logic levels, fanout, and wiring tracks. This paper presents a three-dimensional taxonomy that not only for wide adders. This paper develops a taxonomy of parallel prefix networks based on stages, fanout

  5. The Average Case Complexity of the Parallel Prefix Problem

    E-Print Network [OSTI]

    Reischuk, Rüdiger

    double logarithmic delay while keeping the circuit size linear. The analysis and results are illustrated this can be done in parallel using only linear circuit size [LF80]. Snir has obtained exact bounds­fanin circuits and classify semigroups according to the property of having linear size prefix circuits

  6. Proc. FORTE 2015, (c) Springer Sliced Path Prefixes

    E-Print Network [OSTI]

    Beyer, Dirk

    . Proc. FORTE 2015, (c) Springer Sliced Path Prefixes: An Effective Method to Enable Refinement Selection Dirk Beyer, Stefan Löwe, and Philipp Wendler University of Passau, Germany Abstract. Automatic a significant impact on the verification effectiveness and efficiency. 1 Introduction In the field of automatic

  7. A FRAMEWORK FOR DEFENDING AGAINST PREFIX HIJACK ATTACKS 

    E-Print Network [OSTI]

    Tadi, Krishna C.

    2010-01-16

    information about who administers an AS. The authors of [5] have proposed an algorithm which classifies the relationships with 99% accuracy. More than 90.5% of AS pairs in the Internet have customer-provider relationship, less than 1.5% of AS pairs have... mitigation system. They preselect several ASs and call them lifesaver ASs. In case of a hijack, a detection system notifies these lifesaver ASs with information about the hijacker AS, Victim AS and the victim prefix. All the lifesaver ASs attempt to purge...

  8. Metric Presentation

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

    Success Story Some Metrics That Supported It 8 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y An example - Nuclear Power Industry Objective...

  9. In Computational Statistics and Data Analysis 53 (2008), pp. 289297 Unimodal Regression via Prefix Isotonic Regression

    E-Print Network [OSTI]

    Stout, Quentin F.

    2008-01-01

    In Computational Statistics and Data Analysis 53 (2008), pp. 289­297 Unimodal Regression via Prefix Isotonic Regression Quentin F. Stout University of Michigan Ann Arbor, MI 48109­2121 Abstract This paper gives algorithms for determining real-valued uni- variate unimodal regressions, that is, for determining

  10. Analysis of BGP Prefix Origins During Google's May 2005 Outage Tao Wan Paul C. van Oorschot

    E-Print Network [OSTI]

    Van Oorschot, Paul

    Analysis of BGP Prefix Origins During Google's May 2005 Outage Tao Wan Paul C. van Oorschot School- vice outage is BGP. To pursue the latter possibility further, we explore how BGP was functioning during prior to the service outage. As a result, 49.1% of ASes re-advertising routes for 64

  11. Building Name Street Number Street Prefix Direction Street Name Suffix Street Direction Community 1901 1901 INNOVATION DR VIRGINIA TECH

    E-Print Network [OSTI]

    Building Name Street Number Street Prefix Direction Street Name Suffix Street Direction Community 1901 1901 INNOVATION DR VIRGINIA TECH 1971 1971 KRAFT DR VIRGINIA TECH Ag Engineering Building 120 OLD MILL RD VIRGINIA TECH Agronomy Service Building 1008 OLD MILL RD VIRGINIA TECH Agronomy Storage

  12. Metrics for enterprise transformation

    E-Print Network [OSTI]

    Blackburn, Craig D. (Craig David), S. M. Massachusetts Institute of Technology

    2009-01-01

    The objective of this thesis is to depict the role of metrics in the evolving journey of enterprise transformation. To this end, three propositions are explored: (i) metrics and measurement systems drive transformation, ...

  13. Buildings Performance Metrics Terminology

    Broader source: Energy.gov [DOE]

    This document provides the terms and definitions used in the Department of Energys Performance Metrics Research Project.

  14. Multi-Metric Sustainability Analysis

    SciTech Connect (OSTI)

    Cowlin, S.; Heimiller, D.; Macknick, J.; Mann, M.; Pless, J.; Munoz, D.

    2014-12-01

    A readily accessible framework that allows for evaluating impacts and comparing tradeoffs among factors in energy policy, expansion planning, and investment decision making is lacking. Recognizing this, the Joint Institute for Strategic Energy Analysis (JISEA) funded an exploration of multi-metric sustainability analysis (MMSA) to provide energy decision makers with a means to make more comprehensive comparisons of energy technologies. The resulting MMSA tool lets decision makers simultaneously compare technologies and potential deployment locations.

  15. Surveillance Metrics Sensitivity Study

    SciTech Connect (OSTI)

    Bierbaum, R; Hamada, M; Robertson, A

    2011-11-01

    In September of 2009, a Tri-Lab team was formed to develop a set of metrics relating to the NNSA nuclear weapon surveillance program. The purpose of the metrics was to develop a more quantitative and/or qualitative metric(s) describing the results of realized or non-realized surveillance activities on our confidence in reporting reliability and assessing the stockpile. As a part of this effort, a statistical sub-team investigated various techniques and developed a complementary set of statistical metrics that could serve as a foundation for characterizing aspects of meeting the surveillance program objectives. The metrics are a combination of tolerance limit calculations and power calculations, intending to answer level-of-confidence type questions with respect to the ability to detect certain undesirable behaviors (catastrophic defects, margin insufficiency defects, and deviations from a model). Note that the metrics are not intended to gauge product performance but instead the adequacy of surveillance. This report gives a short description of four metrics types that were explored and the results of a sensitivity study conducted to investigate their behavior for various inputs. The results of the sensitivity study can be used to set the risk parameters that specify the level of stockpile problem that the surveillance program should be addressing.

  16. Surveillance metrics sensitivity study.

    SciTech Connect (OSTI)

    Hamada, Michael S.; Bierbaum, Rene Lynn; Robertson, Alix A.

    2011-09-01

    In September of 2009, a Tri-Lab team was formed to develop a set of metrics relating to the NNSA nuclear weapon surveillance program. The purpose of the metrics was to develop a more quantitative and/or qualitative metric(s) describing the results of realized or non-realized surveillance activities on our confidence in reporting reliability and assessing the stockpile. As a part of this effort, a statistical sub-team investigated various techniques and developed a complementary set of statistical metrics that could serve as a foundation for characterizing aspects of meeting the surveillance program objectives. The metrics are a combination of tolerance limit calculations and power calculations, intending to answer level-of-confidence type questions with respect to the ability to detect certain undesirable behaviors (catastrophic defects, margin insufficiency defects, and deviations from a model). Note that the metrics are not intended to gauge product performance but instead the adequacy of surveillance. This report gives a short description of four metrics types that were explored and the results of a sensitivity study conducted to investigate their behavior for various inputs. The results of the sensitivity study can be used to set the risk parameters that specify the level of stockpile problem that the surveillance program should be addressing.

  17. Generalized utility metrics for supercomputers

    E-Print Network [OSTI]

    Strohmaier, Erich

    2009-01-01

    2007:1–12 Generalized utility metrics for supercomputers 12.ISSUE PAPER Generalized utility metrics for supercomputersproblem of ranking the utility of supercom- puter systems

  18. Cyber threat metrics.

    SciTech Connect (OSTI)

    Frye, Jason Neal; Veitch, Cynthia K.; Mateski, Mark Elliot; Michalski, John T.; Harris, James Mark; Trevino, Cassandra M.; Maruoka, Scott

    2012-03-01

    Threats are generally much easier to list than to describe, and much easier to describe than to measure. As a result, many organizations list threats. Fewer describe them in useful terms, and still fewer measure them in meaningful ways. This is particularly true in the dynamic and nebulous domain of cyber threats - a domain that tends to resist easy measurement and, in some cases, appears to defy any measurement. We believe the problem is tractable. In this report we describe threat metrics and models for characterizing threats consistently and unambiguously. The purpose of this report is to support the Operational Threat Assessment (OTA) phase of risk and vulnerability assessment. To this end, we focus on the task of characterizing cyber threats using consistent threat metrics and models. In particular, we address threat metrics and models for describing malicious cyber threats to US FCEB agencies and systems.

  19. Generalized Fubini-Study Metric and Fisher Information Metric

    E-Print Network [OSTI]

    Debasis Mondal

    2015-03-13

    We provide an experimentally measurable local gauge $U(1)$ invariant Fubini-Study (FS) metric for mixed states. Like the FS metric for pure states, it also captures only the quantum part of the uncertainty in the evolution Hamiltonian. We show that this satisfies the quantum Cramer-Rao bound and thus arrive at a more general and measurable bound. Upon imposing the monotonicity condition, it reduces to the square-root derivative quantum Fisher Information. We show that on the Fisher information metric space dynamical phase is zero. A relation between square root derivative and logarithmic derivative is formulated such that both give the same Fisher information. We generalize the Fubini-Study metric for mixed states further and arrive at a set of Fubini-Study metric---called $\\alpha$ metric. This newly defined $\\alpha$ metric also satisfies the Cramer-Rao bound. Again by imposing the monotonicity condition on this metric, we derive the monotone $\\alpha$ metric. It reduces to the Fisher information metric for $\\alpha=1$.

  20. Quotients of Metric Spaces

    E-Print Network [OSTI]

    Herman, Robert A.

    1968-01-01

    . PRELIMINARIES 1 CHAPTER II . SFACBS IN WHICH SEQUENCES SUFFICE 6 CHAPTER III . QUOTIENTS OF SEPARABLE METRIC SPACES Ik CHAPTER IV. GENERAL QUOTIENT SPACES 25 CHAPTER V. CLOSED QUOTIENT MAPS 35 CHAPTER VI. OPEN QUOTIENT MAPS 50 CHAPTER VII. OPEN AND CLOSED... QUOTIENT MAPS 55 CHAPTER VIII. ANOTHER RESULT 6l BIBLIOGRAPHY 65 CHAPTER I. PRELIMINARIES We begin by stating some basic definitions and theorems. Definition 1 . 1 ; Let f be a function from a topological space X onto a set Y. Then the quotient...

  1. ARM - 2009 Performance Metrics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday, August 10, 20102016 NewsUsers' Executive09 I N9 Performance Metrics

  2. The Space of Metric Spaces

    E-Print Network [OSTI]

    *D. J. Kelleher

    2013-11-16

    The Space of Metric Spaces. *D. J. Kelleher1. 1Department of Mathematics. University of Connecticut. UConn— SIGMA Seminar — Fall 2013. D. J. Kelleher.

  3. Schwarzschild-like metric and a quantum vacuum

    E-Print Network [OSTI]

    P. R. Silva

    2013-02-01

    A quantum vacuum, represented by a viscous fluid, is added to the Einstein vacuum, surrounding a spherical distribution of mass. This gives as a solution, in spherical coordinates, a Schwarzschild-like metric. The plot of g00 and g11 components of the metric, as a function of the radial coordinate, display the same qualitative behavior as that of the Schwarzschild metric. However, the temperature of the event horizon is equal to the Hawking temperature multiplied by a factor of two, while the entropy is equal to half of the Bekenstein one.

  4. August 2003 IT SECURITY METRICS

    E-Print Network [OSTI]

    August 2003 IT SECURITY METRICS Elizabeth B. Lennon, Editor Information Technology Laboratory approach to measuring information security. Evaluating security at the sys tem level, IT security metrics and techniques contained in NIST SP 800-26, Security Self-Assessment Guide for Information Technology Systems

  5. Daylight metrics and energy savings

    SciTech Connect (OSTI)

    Mardaljevic, John; Heschong, Lisa; Lee, Eleanor

    2009-12-31

    The drive towards sustainable, low-energy buildings has increased the need for simple, yet accurate methods to evaluate whether a daylit building meets minimum standards for energy and human comfort performance. Current metrics do not account for the temporal and spatial aspects of daylight, nor of occupants comfort or interventions. This paper reviews the historical basis of current compliance methods for achieving daylit buildings, proposes a technical basis for development of better metrics, and provides two case study examples to stimulate dialogue on how metrics can be applied in a practical, real-world context.

  6. Conformal Transformations in Metric-Affine Gravity and Ghosts

    E-Print Network [OSTI]

    Canan N. Karahan; Oktay Dogangun; Durmus A. Demir

    2012-05-20

    Conformal transformations play a widespread role in gravity theories in regard to their cosmological and other implications. In the pure metric theory of gravity, conformal transformations change the frame to a new one wherein one obtains a conformal-invariant scalar-tensor theory such that the scalar field, deriving from the conformal factor, is a ghost. In this work, conformal transformations and ghosts will be analyzed in the framework of the metric-affine theory of gravity. Within this framework, metric and connection are independent variables, and hence, transform independently under conformal transformations. It will be shown that, if affine connection is invariant under conformal transformations then the scalar field under concern is a non-ghost, non-dynamical field. It is an auxiliary field at the classical level, and might develop a kinetic term at the quantum level. Alternatively, if connection transforms additively with a structure similar to yet more general than that of the Levi-Civita connection, the resulting action describes the gravitational dynamics correctly, and more importantly, the scalar field becomes a dynamical non-ghost field. The equations of motion, for generic geometrical and matter-sector variables, do not reduce connection to the Levi-Civita connection, and hence, independence of connection from metric is maintained. Therefore, metric-affine gravity provides an arena in which ghosts arising from conformal factor are avoided thanks to the independence of connection from the metric.

  7. Module 6 - Metrics, Performance Measurements and Forecasting...

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

    the metrics and performance measurement tools used in Earned Value. This module reviews metrics such as cost and schedule variance along with cost and schedule performance indices....

  8. Microsoft Word - QER Resilience Metrics - Technical Workshp ...

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

    resiliency metrics for the energy sector and use cases o The framing of a resilience roadmap, and the implication and consequences of introducing new energy resilience metrics...

  9. Segmental alternations and metrical theory

    E-Print Network [OSTI]

    Vaysman, Olga

    2009-01-01

    This dissertation focuses on phonological alternations that are influenced or constrained by word-internal prosody, i.e. prominence and foot structure, and what these alternations can tell us about metrical theory. Detailed ...

  10. Normalization of Process Safety Metrics 

    E-Print Network [OSTI]

    Wang, Mengtian

    2012-10-19

    and organizational risks, there is an emerging need to evaluate the process safety implementation across an organization through measurements. Thus, the process safety metric is applied as a powerful tool that measures safety activities, status, and performance...

  11. Phantom Metrics With Killing Spinors

    E-Print Network [OSTI]

    Sabra, W A

    2015-01-01

    We study metric solutions of Einstein-anti-Maxwell theory admitting Killing spinors. The analogue of the IWP metric which admits a space-like Killing vector is found and is expressed in terms of a complex function satisfying the wave equation in flat (2+1)-dimensional space-time. As examples, electric and magnetic Kasner spaces are constructed by allowing the solution to depend only on the time coordinate. Euclidean solutions are also presented.

  12. Horizon thermodynamics and composite metrics

    E-Print Network [OSTI]

    Lorenzo Sindoni

    2012-11-12

    We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operator. We show that due to the availability of a boundary of a boundary principle for the quantum effective action, Clausius-like relations can always be constructed. Hence, any true explanation of the thermodynamic nature of the metric tensor has to be referred to an equilibration process, associated to the presence of an H-theorem, possibly driven by decoherence induced by the pregeometric degrees of freedom, and their entanglement with the geometric ones.

  13. Conformal Transformations in Metric-Affine Gravity and Ghosts

    E-Print Network [OSTI]

    Karahan, Canan N; Demir, Durmus A

    2012-01-01

    Conformal transformations play a widespread role in gravity theories in regard to their cosmological and other implications. In the pure metric theory of gravity, conformal transformations change the frame to a new one wherein one obtains a conformal-invariant scalar-tensor theory such that the scalar field, deriving from the conformal factor, is a ghost. In this work, conformal transformations and ghosts will be analyzed in the framework of the metric-affine theory of gravity. Within this framework, metric and connection are independent variables, and hence, transform independently under conformal transformations. It will be shown that, if affine connection is invariant under conformal transformations then the scalar field under concern is a non-ghost, non-dynamical field. It is an auxiliary field at the classical level, and might develop a kinetic term at the quantum level. Alternatively, if connection transforms additively with a structure similar to yet more general than that of the Levi-Civita connection...

  14. An Automated Evaluation Metric for Chinese Text Entry

    E-Print Network [OSTI]

    Jiang, Mike Tian-Jian; Lin, Jaimie; Lin, Jerry; Hsu, Wen-Lien

    2007-01-01

    In this paper, we propose an automated evaluation metric for text entry. We also consider possible improvements to existing text entry evaluation metrics, such as the minimum string distance error rate, keystrokes per character, cost per correction, and a unified approach proposed by MacKenzie, so they can accommodate the special characteristics of Chinese text. Current methods lack an integrated concern about both typing speed and accuracy for Chinese text entry evaluation. Our goal is to remove the bias that arises due to human factors. First, we propose a new metric, called the correction penalty (P), based on Fitts' law and Hick's law. Next, we transform it into the approximate amortized cost (AAC) of information theory. An analysis of the AAC of Chinese text input methods with different context lengths is also presented.

  15. Defining a Standard Metric for Electricity Savings

    SciTech Connect (OSTI)

    Brown, Marilyn; Akbari, Hashem; Blumstein, Carl; Koomey, Jonathan; Brown, Richard; Calwell, Chris; Carter, Sheryl; Cavanagh, Ralph; Chang, Audrey; Claridge, David; Craig, Paul; Diamond, Rick; Eto, Joseph H.; Fulkerson, William; Gadgil, Ashok; Geller, Howard; Goldemberg, Jose; Goldman, Chuck; Goldstein, David B.; Greenberg, Steve; Hafemeister, David; Harris, Jeff; Harvey, Hal; Heitz, Eric; Hirst, Eric; Hummel, Holmes; Kammen, Dan; Kelly, Henry; Laitner, Skip; Levine, Mark; Lovins, Amory; Masters, Gil; McMahon, James E.; Meier, Alan; Messenger, Michael; Millhone, John; Mills, Evan; Nadel, Steve; Nordman, Bruce; Price, Lynn; Romm, Joe; Ross, Marc; Rufo, Michael; Sathaye, Jayant; Schipper, Lee; Schneider, Stephen H; Sweeney, James L; Verdict, Malcolm; Vorsatz, Diana; Wang, Devra; Weinberg, Carl; Wilk, Richard; Wilson, John; Worrell, Ernst

    2009-03-01

    The growing investment by governments and electric utilities in energy efficiency programs highlights the need for simple tools to help assess and explain the size of the potential resource. One technique that is commonly used in this effort is to characterize electricity savings in terms of avoided power plants, because it is easier for people to visualize a power plant than it is to understand an abstraction such as billions of kilowatt-hours. Unfortunately, there is no standardization around the characteristics of such power plants. In this letter we define parameters for a standard avoided power plant that have physical meaning and intuitive plausibility, for use in back-of-the-envelope calculations. For the prototypical plant this article settles on a 500 MW existing coal plant operating at a 70percent capacity factor with 7percent T&D losses. Displacing such a plant for one year would save 3 billion kW h per year at the meter and reduce emissions by 3 million metric tons of CO2 per year. The proposed name for this metric is the Rosenfeld, in keeping with the tradition among scientists of naming units in honor of the person most responsible for the discovery and widespread adoption of the underlying scientific principle in question--Dr. Arthur H. Rosenfeld.

  16. Agility metric sensitivity using linear error theory 

    E-Print Network [OSTI]

    Smith, David Matthew

    2000-01-01

    Aircraft agility metrics have been proposed for use to measure the performance and capability of aircraft onboard while in-flight. The sensitivity of these metrics to various types of errors and uncertainties is not ...

  17. Definition of GPRA08 benefits metrics

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    Background information for the FY 2007 GPRA methodology review on the definitions of GPRA08 benefits metrics.

  18. Hybrid metric-Palatini gravity

    E-Print Network [OSTI]

    Capozziello, Salvatore; Koivisto, Tomi S; Lobo, Francisco S N; Olmo, Gonzalo J

    2015-01-01

    Recently, the phenomenology of f(R) gravity has been scrutinized motivated by the possibility to account for the self-accelerated cosmic expansion without invoking dark energy sources. Besides, this kind of modified gravity is capable of addressing the dynamics of several self-gravitating systems alternatively to the presence of dark matter. It has been established that both metric and Palatini versions of these theories have interesting features but also manifest severe and different downsides. A hybrid combination of theories, containing elements from both these two formalisms, turns out to be also very successful accounting for the observed phenomenology and is able to avoid some drawbacks of the original approaches. This article reviews the formulation of this hybrid metric-Palatini approach and its main achievements in passing the local tests and in applications to astrophysical and cosmological scenarios, where it provides a unified approach to the problems of dark energy and dark matter.

  19. Comparing Resource Adequacy Metrics: Preprint

    SciTech Connect (OSTI)

    Ibanez, E.; Milligan, M.

    2014-09-01

    As the penetration of variable generation (wind and solar) increases around the world, there is an accompanying growing interest and importance in accurately assessing the contribution that these resources can make toward planning reserve. This contribution, also known as the capacity credit or capacity value of the resource, is best quantified by using a probabilistic measure of overall resource adequacy. In recognizing the variable nature of these renewable resources, there has been interest in exploring the use of reliability metrics other than loss of load expectation. In this paper, we undertake some comparisons using data from the Western Electricity Coordinating Council in the western United States.

  20. MESUR: USAGE-BASED METRICS OF SCHOLARLY IMPACT

    SciTech Connect (OSTI)

    BOLLEN, JOHAN [Los Alamos National Laboratory; RODRIGUEZ, MARKO A. [Los Alamos National Laboratory; VAN DE SOMPEL, HERBERT [Los Alamos National Laboratory

    2007-01-30

    The evaluation of scholarly communication items is now largely a matter of expert opinion or metrics derived from citation data. Both approaches can fail to take into account the myriad of factors that shape scholarly impact. Usage data has emerged as a promising complement to existing methods o fassessment but the formal groundwork to reliably and validly apply usage-based metrics of schlolarly impact is lacking. The Andrew W. Mellon Foundation funded MESUR project constitutes a systematic effort to define, validate and cross-validate a range of usage-based metrics of schlolarly impact by creating a semantic model of the scholarly communication process. The constructed model will serve as the basis of a creating a large-scale semantic network that seamlessly relates citation, bibliographic and usage data from a variety of sources. A subsequent program that uses the established semantic network as a reference data set will determine the characteristics and semantics of a variety of usage-based metrics of schlolarly impact. This paper outlines the architecture and methodology adopted by the MESUR project and its future direction.

  1. Metric Signature Transitions in Optical Metamaterials

    E-Print Network [OSTI]

    Igor I. Smolyaninov; Evgenii E. Narimanov

    2010-07-07

    We demonstrate that the extraordinary waves in indefinite metamaterials experience (- - + +) effective metric signature. During a metric signature change transition in such a metamaterial, a Minkowski space-time is "created" together with large number of particles populating this space-time. Such metamaterial models provide a table top realization of metric signature change events suggested to occur in Bose-Einstein condensates and quantum gravity theories.

  2. Performance Metrics Tiers | Department of Energy

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

    Tiers The performance metrics defined by the Commercial Buildings Integration Program offer different tiers of information to address the needs of various users. On this page you...

  3. Defining a Standard Metric for Electricity Savings

    E-Print Network [OSTI]

    Koomey, Jonathan

    2009-01-01

    1991. The Potential for Electricity Efficiency Improvementswww.eia.doe.gov/cneaf/electricity/page/eia860.html>. FigureA STANDARD METRIC FOR ELECTRICITY SAVINGS Jonathan Koomey*,

  4. Three-dimensional metrics as deformations of a constant curvature metric

    E-Print Network [OSTI]

    B. Coll; J. Llosa; D. Soler

    2001-04-23

    Any three-dimensional Riemannian metric can be locally obtained by deforming a constant curvature metric along one direction. The general interest of this result, both in geometry and physics, and related open problems are stressed.

  5. Conical Kähler–Einstein Metrics Revisited

    E-Print Network [OSTI]

    2014-08-08

    From now on in this paper, we assume X is a smooth Fano manifold, and D is a ... not unique, we can still identify the correct limit Kähler–Einstein metric in the moduli space. ... implies that there is no Kähler–Einstein metric on P2 which bends.

  6. Gathering Text Entry Metrics on Android Devices

    E-Print Network [OSTI]

    MacKenzie, Scott

    Gathering Text Entry Metrics on Android Devices Abstract We developed an application to gather text entry speed and accuracy metrics on Android devices. This paper details the features of the application, Android OS ACM Classification Keywords H.5.2 Information interfaces and presentation (e.g., HCI): User

  7. A Physics of Bounded Metric Spaces

    E-Print Network [OSTI]

    Pierre Peretto

    1997-06-25

    We consider the possibility of obtaining emergent properties of physical spaces endowed with structures analogous to that of collective models put forward by classical statistical physics. We show that, assuming that a so-called "metric scale" does exist, one can indeed recover a number of properties of physical spaces such as the Minkowski metric, the relativistic quantum dynamics and the electroweak theory.

  8. Quality Metrics for Business Process Models

    E-Print Network [OSTI]

    van der Aalst, Wil

    1 Quality Metrics for Business Process Models Irene Vanderfeesten1 , Jorge Cardoso2 , Jan Mendling3-Koivisto, 2001). This chapter elaborates on the importance of quality metrics for business process modeling to this composi- tional structure, a business process model consists of activities, each of which con- tains

  9. Smart Grid Status and Metrics Report Appendices

    SciTech Connect (OSTI)

    Balducci, Patrick J.; Antonopoulos, Chrissi A.; Clements, Samuel L.; Gorrissen, Willy J.; Kirkham, Harold; Ruiz, Kathleen A.; Smith, David L.; Weimar, Mark R.; Gardner, Chris; Varney, Jeff

    2014-07-01

    A smart grid uses digital power control and communication technology to improve the reliability, security, flexibility, and efficiency of the electric system, from large generation through the delivery systems to electricity consumers and a growing number of distributed generation and storage resources. To convey progress made in achieving the vision of a smart grid, this report uses a set of six characteristics derived from the National Energy Technology Laboratory Modern Grid Strategy. The Smart Grid Status and Metrics Report defines and examines 21 metrics that collectively provide insight into the grid’s capacity to embody these characteristics. This appendix presents papers covering each of the 21 metrics identified in Section 2.1 of the Smart Grid Status and Metrics Report. These metric papers were prepared in advance of the main body of the report and collectively form its informational backbone.

  10. Bi-metric pseudo-Finslerian spacetimes

    E-Print Network [OSTI]

    Skakala, Jozef

    2010-01-01

    Finsler spacetimes have become increasingly popular within the theoretical physics community over the last two decades. Because physicists need to use pseudo-Finsler structures to describe propagation}of signals, there will be nonzero null vectors in both the tangent and cotangent spaces --- this causes significant problems in that many of the mathematical results normally obtained for "usual" (Euclidean signature) Finsler structures either do not apply, or require significant modifications to their formulation and/or proof. We shall first provide a few basic definitions, explicitly demonstrating the interpretation of bi-metric theories in terms of pseudo-Finsler norms. We shall then discuss the tricky issues that arise when trying to construct an appropriate pseudo-Finsler metric appropriate to bi-metric spacetimes. Whereas in Euclidian signature the construction of the Finsler metric typically fails at the zero vector, in Lorentzian signature the Finsler metric is typically ill-defined on the entire null co...

  11. Metrics for border management systems.

    SciTech Connect (OSTI)

    Duggan, Ruth Ann

    2009-07-01

    There are as many unique and disparate manifestations of border systems as there are borders to protect. Border Security is a highly complex system analysis problem with global, regional, national, sector, and border element dimensions for land, water, and air domains. The complexity increases with the multiple, and sometimes conflicting, missions for regulating the flow of people and goods across borders, while securing them for national security. These systems include frontier border surveillance, immigration management and customs functions that must operate in a variety of weather, terrain, operational conditions, cultural constraints, and geopolitical contexts. As part of a Laboratory Directed Research and Development Project 08-684 (Year 1), the team developed a reference framework to decompose this complex system into international/regional, national, and border elements levels covering customs, immigration, and border policing functions. This generalized architecture is relevant to both domestic and international borders. As part of year two of this project (09-1204), the team determined relevant relative measures to better understand border management performance. This paper describes those relative metrics and how they can be used to improve border management systems.

  12. Ricci Flow of Biaxial Bianchi IX Metrics

    E-Print Network [OSTI]

    G. Holzegel; T. Schmelzer; C. Warnick

    2007-06-12

    We use the Ricci flow with surgery to study four-dimensional SU(2) x U(1)-symmetric metrics on a manifold with fixed boundary given by a squashed 3-sphere. Depending on the initial metric we show that the flow converges to either the Taub-Bolt or the Taub-NUT metric, the latter case potentially requiring surgery at some point in the evolution. The Ricci flow allows us to explore the Euclidean action landscape within this symmetry class. This work extends the recent work of Headrick and Wiseman to more interesting topologies.

  13. Quantum chaos and operator fidelity metric

    E-Print Network [OSTI]

    Paolo Giorda; Paolo Zanardi

    2009-03-06

    We show that the recently introduced operator fidelity metric provides a natural tool to investigate the cross-over to quantum chaotic behaviour. This metric is an information-theoretic measure of the global stability of a unitary evolution against perturbations. We use random matrix theory arguments to conjecture that the operator fidelity metric can be used as an "order parameter" to discriminates phases with regular behaviour from quantum chaotic ones. A numerical study of the onset of chaotic in the Dicke model is given in order to support the conjecture

  14. Energy-Momentum Distribution in Weyl Metrics

    E-Print Network [OSTI]

    M. Sharif; Tasnim Fatima

    2005-07-16

    In this paper, we evaluate energy and momentum density distributions for the Weyl metric by using the well-known prescriptions of Einstein, Landau-Lifshitz, Papaterou and M$\\ddot{o}$ller. The metric under consideration is the static axisymmetric vacuum solution to the Einstein field equations and one of the field equations represents the Laplace equation. Curzon metric is the special case of this spacetime. We find that the energy density is different for each prescription. However, momentum turns out to be constant in each case.

  15. Conceptual Framework for Developing Resilience Metrics for the...

    Office of Environmental Management (EM)

    Conceptual Framework for Developing Resilience Metrics for the Electricity, Oil, and Gas Sectors in the United States Conceptual Framework for Developing Resilience Metrics for the...

  16. Geodesic completeness of diagonal $G_2$ metrics

    E-Print Network [OSTI]

    L. Fernández-Jambrina

    2009-04-10

    In this talk a sufficient condition for a diagonal orthogonally transitive cylindrical $G_2$ metric to be geodesically complete is given. The condition is weak enough to comprise all known diagonal perfect fluid cosmological models that are non-singular.

  17. Thermodynamic motivations of spherically symmetric static metrics

    E-Print Network [OSTI]

    H. Moradpour; S. Nasirimoghadam

    2015-06-14

    Bearing the thermodynamic arguments together with the two definitions of mass in mind, we try to find metrics with spherical symmetry. We consider the adiabatic condition along with the Gong-Wang mass, and evaluate the $g_{rr}$ element which points to a null hypersurface. In addition, we generalize the thermodynamics laws to this hypersurface to find its temperature and thus the corresponding surface gravity which enables us to get a relation for the $g_{tt}$ element. Finally, we investigate the mathematical and physical properties of the discovered metric in the Einstein relativity framework which shows that the primary mentioned null hypersurface is an event horizon. We also show that if one considers the Misner-Sharp mass in the calculations, the Schwarzschild metric will be got. The relationship between the two mass definitions in each metric is studied. The results of considering the geometrical surface gravity are also addressed.

  18. Thermodynamic motivations of spherically symmetric static metrics

    E-Print Network [OSTI]

    Moradpour, H

    2015-01-01

    Bearing the thermodynamic arguments together with the two definitions of mass in mind, we try to find metrics with spherical symmetry. We consider the adiabatic condition along with the Gong-Wang mass, and evaluate the $g_{rr}$ element which points to a null hypersurface. In addition, we generalize the thermodynamics laws to this hypersurface to find its temperature and thus the corresponding surface gravity which enables us to get a relation for the $g_{tt}$ element. Finally, we investigate the mathematical and physical properties of the discovered metric in the Einstein relativity framework which shows that the primary mentioned null hypersurface is an event horizon. We also show that if one considers the Misner-Sharp mass in the calculations, the Schwarzschild metric will be got. The relationship between the two mass definitions in each metric is studied. The results of considering the geometrical surface gravity are also addressed.

  19. Clean Cities Annual Metrics Report 2009 (Revised)

    SciTech Connect (OSTI)

    Johnson, C.

    2011-08-01

    Document provides Clean Cities coalition metrics about the use of alternative fuels; the deployment of alternative fuel vehicles, hybrid electric vehicles (HEVs), and idle reduction initiatives; fuel economy activities; and programs to reduce vehicle miles driven.

  20. Inference and Labeling of Metric-Induced Network Topologies

    E-Print Network [OSTI]

    Byers, John W.

    PERISCOPE, a Linux embodiment of MINT constructions. We instantiate MINT and PERISCOPE for a specific metric

  1. Metrics for Evaluating the Accuracy of Solar Power Forecasting (Presentation)

    SciTech Connect (OSTI)

    Zhang, J.; Hodge, B.; Florita, A.; Lu, S.; Hamann, H.; Banunarayanan, V.

    2013-10-01

    This presentation proposes a suite of metrics for evaluating the performance of solar power forecasting.

  2. METRICS FOR WAYFINDING 1 Three Levels of Metric for Evaluating Wayfinding

    E-Print Network [OSTI]

    Ruddle, Roy

    Lessels School of Computing, University of Leeds, Leeds, LS2 9JT, UK. email: royr@comp.leeds.ac.uk Tel a detailed review of research into VE wayfinding. A case study from research into the fidelity into two major sections. The first reviews metrics in #12;METRICS FOR WAYFINDING 4 each of the three levels

  3. Cleanroom Energy Efficiency: Metrics and Benchmarks

    SciTech Connect (OSTI)

    International SEMATECH Manufacturing Initiative; Mathew, Paul A.; Tschudi, William; Sartor, Dale; Beasley, James

    2010-07-07

    Cleanrooms are among the most energy-intensive types of facilities. This is primarily due to the cleanliness requirements that result in high airflow rates and system static pressures, as well as process requirements that result in high cooling loads. Various studies have shown that there is a wide range of cleanroom energy efficiencies and that facility managers may not be aware of how energy efficient their cleanroom facility can be relative to other cleanroom facilities with the same cleanliness requirements. Metrics and benchmarks are an effective way to compare one facility to another and to track the performance of a given facility over time. This article presents the key metrics and benchmarks that facility managers can use to assess, track, and manage their cleanroom energy efficiency or to set energy efficiency targets for new construction. These include system-level metrics such as air change rates, air handling W/cfm, and filter pressure drops. Operational data are presented from over 20 different cleanrooms that were benchmarked with these metrics and that are part of the cleanroom benchmark dataset maintained by Lawrence Berkeley National Laboratory (LBNL). Overall production efficiency metrics for cleanrooms in 28 semiconductor manufacturing facilities in the United States and recorded in the Fabs21 database are also presented.

  4. Enhanced Accident Tolerant LWR Fuels: Metrics Development

    SciTech Connect (OSTI)

    Shannon Bragg-Sitton; Lori Braase; Rose Montgomery; Chris Stanek; Robert Montgomery; Lance Snead; Larry Ott; Mike Billone

    2013-09-01

    The Department of Energy (DOE) Fuel Cycle Research and Development (FCRD) Advanced Fuels Campaign (AFC) is conducting research and development on enhanced Accident Tolerant Fuels (ATF) for light water reactors (LWRs). This mission emphasizes the development of novel fuel and cladding concepts to replace the current zirconium alloy-uranium dioxide (UO2) fuel system. The overall mission of the ATF research is to develop advanced fuels/cladding with improved performance, reliability and safety characteristics during normal operations and accident conditions, while minimizing waste generation. The initial effort will focus on implementation in operating reactors or reactors with design certifications. To initiate the development of quantitative metrics for ATR, a LWR Enhanced Accident Tolerant Fuels Metrics Development Workshop was held in October 2012 in Germantown, MD. This paper summarizes the outcome of that workshop and the current status of metrics development for LWR ATF.

  5. Metrics for comparison of crystallographic maps

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

    Urzhumtsev, Alexandre; Afonine, Pavel V.; Lunin, Vladimir Y.; Terwilliger, Thomas C.; Adams, Paul D.

    2014-10-01

    Numerical comparison of crystallographic contour maps is used extensively in structure solution and model refinement, analysis and validation. However, traditional metrics such as the map correlation coefficient (map CC, real-space CC or RSCC) sometimes contradict the results of visual assessment of the corresponding maps. This article explains such apparent contradictions and suggests new metrics and tools to compare crystallographic contour maps. The key to the new methods is rank scaling of the Fourier syntheses. The new metrics are complementary to the usual map CC and can be more helpful in map comparison, in particular when only some of their aspects,more »such as regions of high density, are of interest.« less

  6. Computing and Using Metrics in the ADS

    E-Print Network [OSTI]

    Henneken, Edwin A; Kurtz, Michael J; Grant, Carolyn S; Thompson, Donna; Luker, Jay; Chyla, Roman; Holachek, Alexandra; Murray, Stephen S

    2014-01-01

    Finding measures for research impact, be it for individuals, institutions, instruments or projects, has gained a lot of popularity. More papers than ever are being written on new impact measures, and problems with existing measures are being pointed out on a regular basis. Funding agencies require impact statistics in their reports, job candidates incorporate them in their resumes, and publication metrics have even been used in at least one recent court case. To support this need for research impact indicators, the SAO/NASA Astrophysics Data System (ADS) has developed a service which provides a broad overview of various impact measures. In this presentation we discuss how the ADS can be used to quench the thirst for impact measures. We will also discuss a couple of the lesser known indicators in the metrics overview and the main issues to be aware of when compiling publication-based metrics in the ADS, namely author name ambiguity and citation incompleteness.

  7. Holographic principle and the dominant energy condition for Kasner type metrics

    E-Print Network [OSTI]

    Mauricio Cataldo; Norman Cruz; Sergio del Campo; Samuel Lepe

    2001-04-12

    In this letter we study adiabatic anisotropic matter filled Bianchi type I models of the Kasner form together with the cosmological holographic bound. We find that the dominant energy condition and the holographic bound give precisely the same constraint on the scale factor parameters that appear in the metric.

  8. Fourier Transform, Riemann Surfaces and Indefinite Metric

    E-Print Network [OSTI]

    Fominov, Yakov

    Fourier Transform, Riemann Surfaces and Indefinite Metric P. G. Grinevich, S.P.Novikov Zakharov Park, College Park, USA #12;What is Fourier Transform in Riemann Surfaces? Which Problems need it? Discrete Analog of The Fourier/Laurent bases in Riemann Sur- faces was constructed by Krichever-Novikov (KN

  9. Towards a Multidimensional Geometric Metric for Sustainability

    E-Print Network [OSTI]

    Collins, Gary S.

    Towards a Multidimensional Geometric Metric for Sustainability Noah Granieri1, Gaurav Ameta2 1's REU program under grant number 0754370 Results Geometric results from Sustainability Data ·All aspect sustainability aspect values change depending on fuel sources for energy production. Designers may choose what

  10. RAY PRESERVING METRICS AND APPLICATIONS JAIGYOUNG CHOE

    E-Print Network [OSTI]

    Choe, Jaigyoung

    of the two-dimensional hyper- bolic plane H2 (-2 ) with Gauss curvature -2 RAY PRESERVING METRICS AND APPLICATIONS JAIGYOUNG CHOE 1. INTRODUCTION Let be an m-dimensional as the union of the line segments from p to q, over all q . And for a k-dimensional submanifold N Rn

  11. New Metrics for Blog Mining Brian Ulicnya

    E-Print Network [OSTI]

    Baclawski, Kenneth B.

    New Metrics for Blog Mining Brian Ulicnya , Ken Baclawskia , Amy Magnusb a VIStology, Inc., 5, Suite 325 , Arlington, VA 22203 ABSTRACT Blogs represent an important new arena for knowledge discovery-human) information sources monitoring important local and global events, and other blogs, for items of interest upon

  12. An Attack Surface Metric Pratyusa K. Manadhata

    E-Print Network [OSTI]

    K. Manadhata This research was sponsored in part by the Defense Advanced Research Project Agency by the National Science Foundation under grants no. CCR-0121547 and CNS-0433540, SAP Labs, LLC under award no metrics has recently become more pressing. In this thesis, we introduce the measure of a software system

  13. Clean Cities 2010 Annual Metrics Report

    SciTech Connect (OSTI)

    Johnson, C.

    2012-10-01

    This report details the petroleum savings and vehicle emissions reductions achieved by the U.S. Department of Energy's Clean Cities program in 2010. The report also details other performance metrics, including the number of stakeholders in Clean Cities coalitions, outreach activities by coalitions and national laboratories, and alternative fuel vehicles deployed.

  14. Clean Cities 2011 Annual Metrics Report

    SciTech Connect (OSTI)

    Johnson, C.

    2012-12-01

    This report details the petroleum savings and vehicle emissions reductions achieved by the U.S. Department of Energy's Clean Cities program in 2011. The report also details other performance metrics, including the number of stakeholders in Clean Cities coalitions, outreach activities by coalitions and national laboratories, and alternative fuel vehicles deployed.

  15. On the Jacobi-Metric Stability Criterion

    E-Print Network [OSTI]

    M. A. Gonzalez Leon; J. L. Hernandez Pastora

    2007-05-30

    We investigate the exact relation existing between the stability equation for the solutions of a mechanical system and the geodesic deviation equation of the associated geodesic problem in the Jacobi metric constructed via the Maupertuis-Jacobi Principle. We conclude that the dynamical and geometrical approaches to the stability/instability problem are not equivalent.

  16. Performance Metrics Research Project - Final Report

    SciTech Connect (OSTI)

    Deru, M.; Torcellini, P.

    2005-10-01

    NREL began work for DOE on this project to standardize the measurement and characterization of building energy performance. NREL's primary research objectives were to determine which performance metrics have greatest value for determining energy performance and to develop standard definitions and methods of measuring and reporting that performance.

  17. Evaluation Criteria for Human-Automation Performance Metrics

    E-Print Network [OSTI]

    Pina, Patricia Elena

    Previous research has identified broad metric classes for human-automation performance to facilitate metric selection, as well as understanding and comparison of research results. However, there is still lack of an objective ...

  18. The Jacobi-metric for timelike geodesics in static spacetimes

    E-Print Network [OSTI]

    G. W. Gibbons

    2015-09-09

    It is shown that the free motion of massive particles moving in static spacetimes are given by the geodesics of an energy-dependent Riemannian metric on the spatial sections analogous to Jacobi's metric in classical dynamics. In the massless limit Jacobi's metric coincides with the energy independent Fermat or optical metric. For stationary metrics, it is known that the motion of massless particles is given by the geodesics of an energy independent Finslerian metric of Randers type. The motion of massive particles is governed by neither a Riemannian nor a Finslerian metric. The properies of the Jacobi metric for massive particles moving outside the horizon of a Schwarschild black hole are described. By constrast with the massless case, the Gaussian curvature of the equatorial sections is not always negative.

  19. The Jacobi-metric for timelike geodesics in static spacetimes

    E-Print Network [OSTI]

    Gibbons, G W

    2015-01-01

    It is shown that the free motion of massive particles moving in static spacetimes are given by the geodesics of an energy-dependent Riemannian metric on the spatial sections analogous to Jacobi's metric in classical dynamics. In the massless limit Jacobi's metric coincides with the energy independent Fermat or optical metric. For stationary metrics, it is known that the motion of massless particles is given by the geodesics of an energy independent Finslerian metric of Randers type. The motion of massive particles is governed by neither a Riemannian nor a Finslerian metric. The properies of the Jacobi metric for massive particles moving outside the horizon of a Schwarschild black hole are described. By constrast with the massless case, the Gaussian curvature of the equatorial sections is not always negative.

  20. Development of a multiple metric index for macroinvertebrates collected from lower Missouri River floodplain wetlands

    E-Print Network [OSTI]

    Koontz, Jason Alexander

    2010-07-26

    of a priori Stressor Groups ................................................................................. 27 2.8 Metric Response ................................................................................................................... 28... 2.8 Metric Redundancy............................................................................................................... 28 2.9 Scoring Individual Metrics and Final Index...

  1. Metrics Are Fitness Functions Too Mark Harman John Clark

    E-Print Network [OSTI]

    Singer, Jeremy

    that there is an alternative, complementary, view of a metric: as a fitness function, used to guide a search for optimal' (MAFF) approach offers a number of additional benefits to metrics research and practice because systems. It describes the properties of a metric which make it a good fitness function and explains

  2. Gauge - invariant fluctuations of the metric in stochastic inflation

    E-Print Network [OSTI]

    Mauricio Bellini

    2000-01-07

    I derive the stochastic equation for the perturbations of the metric for a gauge - invariant energy - momemtum - tensor (EMT) in stochastic inflation. A quantization for the field that describes the gauge - invariant perturbations for the metric is developed. In a power - law expansion for the universe the amplitude for these perturbations on a background metric could be very important in the infrared sector.

  3. Complex geometry and pre-metric electromagnetism

    E-Print Network [OSTI]

    D. H. Delphenich

    2004-12-10

    The intimate link between complex geometry and the problem of the pre-metric formulation of electromagnetism is explored. In particular, the relationship between 3+1 decompositions of R4 and the decompositions of the vector space of bivectors over R4 into real and imaginary subspaces relative to a choice of complex structure is emphasized. The role of the various scalar products on the space of bivectors that are defined in terms of a volume element on R4 and a complex structure on the space of bivectors that makes it C-linear isomorphic to C3 is discussed in the context of formulation of a theory of electromagnetism in which the Lorentzian metric on spacetime follows as a consequence of the existence of electromagnetic waves, not a prior assumption.

  4. Network Community Detection on Metric Space

    E-Print Network [OSTI]

    Saha, Suman

    2015-01-01

    Community detection in a complex network is an important problem of much interest in recent years. In general, a community detection algorithm chooses an objective function and captures the communities of the network by optimizing the objective function, and then, one uses various heuristics to solve the optimization problem to extract the interesting communities for the user. In this article, we demonstrate the procedure to transform a graph into points of a metric space and develop the methods of community detection with the help of a metric defined for a pair of points. We have also studied and analyzed the community structure of the network therein. The results obtained with our approach are very competitive with most of the well-known algorithms in the literature, and this is justified over the large collection of datasets. On the other hand, it can be observed that time taken by our algorithm is quite less compared to other methods and justifies the theoretical findings.

  5. Quantum metric fluctuations and Hawking radiation

    E-Print Network [OSTI]

    R. Parentani

    2000-09-05

    In this Letter we study the gravitational interactions between outgoing configurations giving rise to Hawking radiation and in-falling configurations. When the latter are in their ground state, the near horizon interactions lead to collective effects which express themselves as metric fluctuations and which induce dissipation, as in Brownian motion. This dissipation prevents the appearance of trans-Planckian frequencies and leads to a description of Hawking radiation which is very similar to that obtained from sound propagation in condensed matter models.

  6. Smart Grid Status and Metrics Report

    SciTech Connect (OSTI)

    Balducci, Patrick J.; Weimar, Mark R.; Kirkham, Harold

    2014-07-01

    To convey progress made in achieving the vision of a smart grid, this report uses a set of six characteristics derived from the National Energy Technology Laboratory Modern Grid Strategy. It measures 21 metrics to provide insight into the grid’s capacity to embody these characteristics. This report looks across a spectrum of smart grid concerns to measure the status of smart grid deployment and impacts.

  7. Linearization of Moffat's Symmetric Complex Metric Gravity

    E-Print Network [OSTI]

    Joakim Munkhammar

    2009-09-19

    In this paper we investigate a complex symmetric generalization of general relativity and in particular we investigate its linearized field equations. We begin by reviewing some basic definitions and structures in Moffat's symmetric complex metric field theory of gravity. We then move on to derive the linearized retarded complex field equations. In addition to this we also derive a linearization of Moffat's field equations based on the more rigorous Fermi coordinate approach. In conclusion it is shown that the linearized symmetric complex field equations leads to a complex form of gravitomagnetism. We also briefly review the gravitational wave equation from the source less linearized symmetric complex field equations and discuss some open problems.

  8. Metrics For Comparing Plasma Mass Filters

    SciTech Connect (OSTI)

    Abraham J. Fetterman and Nathaniel J. Fisch

    2012-08-15

    High-throughput mass separation of nuclear waste may be useful for optimal storage, disposal, or environmental remediation. The most dangerous part of nuclear waste is the fission product, which produces most of the heat and medium-term radiation. Plasmas are well-suited to separating nuclear waste because they can separate many different species in a single step. A number of plasma devices have been designed for such mass separation, but there has been no standardized comparison between these devices. We define a standard metric, the separative power per unit volume, and derive it for three different plasma mass filters: the plasma centrifuge, Ohkawa filter, and the magnetic centrifugal mass filter. __________________________________________________

  9. Metrics for comparing plasma mass filters

    SciTech Connect (OSTI)

    Fetterman, Abraham J.; Fisch, Nathaniel J.

    2011-10-15

    High-throughput mass separation of nuclear waste may be useful for optimal storage, disposal, or environmental remediation. The most dangerous part of nuclear waste is the fission product, which produces most of the heat and medium-term radiation. Plasmas are well-suited to separating nuclear waste because they can separate many different species in a single step. A number of plasma devices have been designed for such mass separation, but there has been no standardized comparison between these devices. We define a standard metric, the separative power per unit volume, and derive it for three different plasma mass filters: the plasma centrifuge, Ohkawa filter, and the magnetic centrifugal mass filter.

  10. FY 2013 Metric Summary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report to Congress MoreHyd rog en Tan41FY 2013 Q1 Metric

  11. Clean Cities 2013 Annual Metrics Report

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center Home PageBlender PumpVehiclesThe Heat Is onis3 Annual Metrics Report

  12. Clean Cities 2014 Annual Metrics Report

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center Home PageBlender PumpVehiclesThe Heat Is onis3 Annual Metrics4

  13. Superradiance on the Reissner-Nordstrom metric

    E-Print Network [OSTI]

    Laurent Di Menza; Jean-Philippe Nicolas

    2015-06-22

    In this article, we study the superradiance of charged scalar fields on the sub-extremal Reissner-Nordstrom metric, a mechanism by which such fields can extract energy from a static spherically symmetric charged black hole. A geometrical way of measuring the amount of energy extracted is proposed. Then we investigate the question numerically. The toy-model and the numerical methods used in our simulations are presented and the problem of long time measurement of the outgoing energy flux is discussed. We provide a numerical example of a field exhibiting a behaviour analogous to the Penrose process: an incoming wave packet which splits, as it approaches the black hole, into an incoming part with negative energy and an outgoing part with more energy than the initial incoming one. We also show another type of superradiant solution for which the energy extraction is more important. Hyperradiant behaviour is not observed, which is an indication that the Reissner-Nordstrom metric is linearly stable in the sub-extremal case.

  14. Measurable Control System Security through Ideal Driven Technical Metrics

    SciTech Connect (OSTI)

    Miles McQueen; Wayne Boyer; Sean McBride; Marie Farrar; Zachary Tudor

    2008-01-01

    The Department of Homeland Security National Cyber Security Division supported development of a small set of security ideals as a framework to establish measurable control systems security. Based on these ideals, a draft set of proposed technical metrics was developed to allow control systems owner-operators to track improvements or degradations in their individual control systems security posture. The technical metrics development effort included review and evaluation of over thirty metrics-related documents. On the bases of complexity, ambiguity, or misleading and distorting effects the metrics identified during the reviews were determined to be weaker than necessary to aid defense against the myriad threats posed by cyber-terrorism to human safety, as well as to economic prosperity. Using the results of our metrics review and the set of security ideals as a starting point for metrics development, we identified thirteen potential technical metrics - with at least one metric supporting each ideal. Two case study applications of the ideals and thirteen metrics to control systems were then performed to establish potential difficulties in applying both the ideals and the metrics. The case studies resulted in no changes to the ideals, and only a few deletions and refinements to the thirteen potential metrics. This led to a final proposed set of ten core technical metrics. To further validate the security ideals, the modifications made to the original thirteen potential metrics, and the final proposed set of ten core metrics, seven separate control systems security assessments performed over the past three years were reviewed for findings and recommended mitigations. These findings and mitigations were then mapped to the security ideals and metrics to assess gaps in their coverage. The mappings indicated that there are no gaps in the security ideals and that the ten core technical metrics provide significant coverage of standard security issues with 87% coverage. Based on the two case studies and evaluation of the seven assessments, the security ideals demonstrated their value in guiding security thinking. Further, the final set of core technical metrics has been demonstrated to be both usable in the control system environment and provide significant coverage of standard security issues.

  15. On the Hamilton approach to the metric GR

    E-Print Network [OSTI]

    Frolov, Alexei M

    2015-01-01

    Basic principles of the Hamilton approach developed for the metric General Relativity (Einstein`s GR) are discussed. In particular, we derive the Hamiltonian of the metric GR in the explicit form. This Hamiltonian is a quadratic function of the momenta $\\pi^{mn}$ conjugate to the spatial components $g_{mn}$ of the metric tensor $g_{\\alpha\\beta}$. The Hamilton approach is used to analyze some problems of metric GR, including the internal structure of propagating gravitational waves and quantization of the metric GR. We also derive the Schr\\"{o}dinger equation for the free Gravitational field and show that actual gravitational field cannot propagate as pure harmonic oscillations, or harmonic gravitational waves. A number of inequalities useful in the metric GR are derived.

  16. Warm inflation and scalar perturbations of the metric

    E-Print Network [OSTI]

    Mauricio Bellini

    2001-01-16

    A second-order expansion for the quantum fluctuations of the matter field was considered in the framework of the warm inflation scenario. The friction and Hubble parameters were expended by means of a semiclassical approach. The fluctuations of the Hubble parameter generates fluctuations of the metric. These metric fluctuations produce an effective term of curvature. The power spectrum for the metric fluctuations can be calculated on the infrared sector.

  17. On isotropic metric of Schwarzschild solution of Einstein equation

    E-Print Network [OSTI]

    T. Mei

    2006-10-24

    The known static isotropic metric of Schwarzschild solution of Einstein equation cannot cover with the range of r<2MG, a new isotropic metric of Schwarzschild solution is obtained. The new isotropic metric has the characters: (1) It is dynamic and periodic. (2) It has infinite singularities of the spacetime. (3) It cannot cover with the range of 0metric.

  18. Conceptual Framework for Developing Resilience Metrics for the...

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

    Conceptual Framework for Developing Resilience Metrics for the Electricity, Oil, and Gas Sectors in the United States (September 2014) Conceptual Framework for Developing...

  19. Resilient Control Systems Practical Metrics Basis for Defining Mission Impact

    SciTech Connect (OSTI)

    Craig G. Rieger

    2014-08-01

    "Resilience” describes how systems operate at an acceptable level of normalcy despite disturbances or threats. In this paper we first consider the cognitive, cyber-physical interdependencies inherent in critical infrastructure systems and how resilience differs from reliability to mitigate these risks. Terminology and metrics basis are provided to integrate the cognitive, cyber-physical aspects that should be considered when defining solutions for resilience. A practical approach is taken to roll this metrics basis up to system integrity and business case metrics that establish “proper operation” and “impact.” A notional chemical processing plant is the use case for demonstrating how the system integrity metrics can be applied to establish performance, and

  20. Stable determination of generic simple metrics from the hyperbolic ...

    E-Print Network [OSTI]

    problem of recovering such metrics from the Dirichlet-to-Neumann map associated ..... Using a partition of unity, one can extend ' in a small neighborhood of @?.

  1. Integration of Sustainability Metrics into Design Cases and State...

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

    Conversion Stage Life Cycle Inventory * Fossil GHGs * Fossil Energy Use * Fuel Yield * Carbon-to-Fuel Efficiency * Water Consumption * Wastewater Generation Sustainability Metrics...

  2. Draft Supplemental Environmental Impact Statement for the Production...

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

    that there are 3 chances in 1 million that the associated result (for example, a fatal cancer) will occur in the period covered by the analysis. METRIC PREFIXES Prefix Symbol...

  3. Non-perturbative scalar gauge-invariant metric fluctuations from the Ponce de Leon metric in the STM theory of gravity

    E-Print Network [OSTI]

    Mariano Anabitarte; Mauricio Bellini

    2008-02-20

    We study our non-perturbative formalism to describe scalar gauge-invariant metric fluctuations by extending the Ponce de Leon metric.

  4. Clean Cities 2013 Annual Metrics Report

    SciTech Connect (OSTI)

    Johnson, C.; Singer, M.

    2014-10-01

    Each year, the U.S. Department of Energy asks its Clean Cities program coordinators to submit annual reports of their activities and accomplishments for the previous calendar year. Data and information are submitted via an online database that is maintained as part of the Alternative Fuels Data Center (AFDC) at the National Renewable Energy Laboratory (NREL). Coordinators submit a range of data that characterize the membership, funding, projects, and activities of their coalitions. They also submit data about sales of alternative fuels, deployment of alternative fuel vehicles (AFVs) and hybrid electric vehicles (HEVs), idle-reduction (IR) initiatives, fuel economy activities, and programs to reduce vehicle miles traveled (VMT). NREL analyzes the data and translates them into petroleum-use reduction impacts, which are summarized in this 2013 Annual Metrics Report.

  5. Bi-metric Gravity and "Dark Matter"

    E-Print Network [OSTI]

    I. T. Drummond

    2000-08-18

    We present a bi-metric theory of gravity containing a length scale of galactic size. For distances less than this scale the theory satisfies the standard tests of General Relativity. For distances greater than this scale the theory yields an effective gravitational constant much larger than the locally observed value of Newton's constant. The transition from one regime to the other through the galactic scale can explain the observed rotation curves of galaxies and hence the effects normally attributed to the presence of dark matter. Phenomena on an extragalactic scale such as galactic clusters and the expansion of the universe are controlled by the enhanced gravitational coupling. This provides an explanation of the missing matter normally invoked to account for the observed value of Hubble's constant in relation to observed matter.

  6. A Content Propagation Metric for Efficient Content Distribution

    E-Print Network [OSTI]

    Keinan, Alon

    A Content Propagation Metric for Efficient Content Distribution Ryan S. Peterson Cornell University@cs.cornell.edu ABSTRACT Efficient content distribution in large networks comprising data- centers, end hosts, and distributed in-network caches is a diffi- cult problem. Existing systems rely on mechanisms and metrics

  7. Metrics for Evaluating Conventional and Renewable Energy Technologies (Presentation)

    SciTech Connect (OSTI)

    Mann, M. K.

    2013-01-01

    With numerous options for the future of natural gas, how do we know we're going down the right path? How do we designate a metric to measure and demonstrate change and progress, and how does that metric incorporate all stakeholders and scenarios?

  8. Primordial fluctuations of the metric in the warm inflation scenario

    E-Print Network [OSTI]

    Mauricio Bellini

    2000-05-16

    I consider a semiclassical expansion of the scalar field in the warm inflation scenario. I study the evolution for the fluctuations of the metric around the Friedmann-Robertson-Walker one. The formalism predicts that, in the power-law expansion universe, the fluctuations of the metric decreases with time.

  9. Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions

    E-Print Network [OSTI]

    LBNL-3393E Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions Paul Mathew (CEC), and by the U.S. Department of Energy, under Contract No. DE-AC02- 05CH11231. #12;Data Center ........................................................................................................3 3. Overall Data Center Performance Metrics

  10. A Primer on Hardware Security: Models, Methods, and Metrics

    E-Print Network [OSTI]

    INVITED P A P E R A Primer on Hardware Security: Models, Methods, and Metrics The paper is a primer on hardware security threat models, metrics, and remedies. By Masoud Rostami, Farinaz Koushanfar, and Ramesh) production supply chain has intro- duced hardware-based vulnerabilities. Existing literature in hardware

  11. PRIMARY RESEARCH PAPER Summer stream temperature metrics for predicting brook

    E-Print Network [OSTI]

    Vermont, University of

    -012-1336-1 #12;affected by warm water temperatures. Long-term stream temperature monitoring is useful biological surveys; thus, using temperature is appealing as a first-cut metric for monitoring fishPRIMARY RESEARCH PAPER Summer stream temperature metrics for predicting brook trout (Salvelinus

  12. Scalars, Vectors and Tensors from Metric-Affine Gravity

    E-Print Network [OSTI]

    Karahan, Canan N; Demir, Durmus A

    2011-01-01

    The metric-affine gravity provides a useful framework for analyzing gravitational dynamics since it treats metric tensor and affine connection as fundamentally independent variables. In this work, we show that, a metric-affine gravity theory composed of the invariants formed from non-metricity, torsion and curvature tensors decomposes exhaustively into a theory of scalar, vector and tensor fields. These fields are natural candidates for the ones needed by various cosmological phenomena. Indeed, we show that the model accommodates TeVeS gravity (relativistic modified gravity theory), vector inflation, and aether-like models. Detailed analyses of these and other phenomena can lead to a standard metric-affine gravity model encoding scalars, vectors and tensors necessitated by cosmology.

  13. Scalars, Vectors and Tensors from Metric-Affine Gravity

    E-Print Network [OSTI]

    Canan N. Karahan; Asli Altas; Durmus A. Demir

    2013-02-02

    The metric-affine gravity provides a useful framework for analyzing gravitational dynamics since it treats metric tensor and affine connection as fundamentally independent variables. In this work, we show that, a metric-affine gravity theory composed of the invariants formed from non-metricity, torsion and curvature tensors can be decomposed into a theory of scalar, vector and tensor fields. These fields are natural candidates for the ones needed by various cosmological and other phenomena. Indeed, we show that the model accommodates TeVeS gravity (relativistic modified gravity theory), vector inflation, and aether-like models. Detailed analyses of these and other phenomena can lead to a standard metric-affine gravity model encoding scalars, vectors and tensors.

  14. Can Fault Prediction Models and Metrics be Used for Vulnerability Prediction? Yonghee Shin and Laurie Williams

    E-Print Network [OSTI]

    Young, R. Michael

    are built with traditional metrics of complexity, code churn, and fault history. We have performed to the code [17]. Hence, complexity metrics and code churn metrics have been used for fault prediction [5, 17 fault prediction metrics ­ complexity, code churn, and fault history metrics for vulnerability

  15. Practical Diagnostics for Evaluating Residential Commissioning Metrics

    SciTech Connect (OSTI)

    Wray, Craig; Walker, Iain; Siegel, Jeff; Sherman, Max

    2002-06-11

    In this report, we identify and describe 24 practical diagnostics that are ready now to evaluate residential commissioning metrics, and that we expect to include in the commissioning guide. Our discussion in the main body of this report is limited to existing diagnostics in areas of particular concern with significant interactions: envelope and HVAC systems. These areas include insulation quality, windows, airtightness, envelope moisture, fan and duct system airflows, duct leakage, cooling equipment charge, and combustion appliance backdrafting with spillage. Appendix C describes the 83 other diagnostics that we have examined in the course of this project, but that are not ready or are inappropriate for residential commissioning. Combined with Appendix B, Table 1 in the main body of the report summarizes the advantages and disadvantages of all 107 diagnostics. We first describe what residential commissioning is, its characteristic elements, and how one might structure its process. Our intent in this discussion is to formulate and clarify these issues, but is largely preliminary because such a practice does not yet exist. Subsequent sections of the report describe metrics one can use in residential commissioning, along with the consolidated set of 24 practical diagnostics that the building industry can use now to evaluate them. Where possible, we also discuss the accuracy and usability of diagnostics, based on recent laboratory work and field studies by LBNL staff and others in more than 100 houses. These studies concentrate on evaluating diagnostics in the following four areas: the DeltaQ duct leakage test, air-handler airflow tests, supply and return grille airflow tests, and refrigerant charge tests. Appendix A describes those efforts in detail. In addition, where possible, we identify the costs to purchase diagnostic equipment and the amount of time required to conduct the diagnostics. Table 1 summarizes these data. Individual equipment costs for the 24 practical diagnostics range from a few hundred dollars to many thousands of dollars. The higher costs are associated with infrared thermography and state-of-the-art automated diagnostic systems. Most tests can be performed in one hour or less, using equipment priced toward the lower end of the cost spectrum.

  16. Generalized Transformation Design: metrics, speeds, and diffusion

    E-Print Network [OSTI]

    Kinsler, Paul

    2015-01-01

    We show that a unified and maximally generalized approach to spatial transformation design is possible, one that encompasses all second order waves, rays, or diffusion processes in anisotropic media. At the design step it is \\emph{not} necessary to specify the physical process for which a specific device will be -- or is intended to be -- built. The primary approximation required is that the effect of wave impedance is neglected, an attribute that plays no role in ray propagation, and therefore is not relevant for pure ray devices; another constraint is that spatial variation in material parameters may need to be sufficiently small. Device construction relies on how we can re-imagine the abstract mathematical notion of a metric on a manifold as a speed-squared matrix (or a diffusion matrix), a step which also specifies the means by which transformation devices will actually be built. Notably, we can conclude that a generalised ray theory that allows for anisotropic indexes (speeds) generates the same predicti...

  17. Geothermal Plant Capacity Factors

    SciTech Connect (OSTI)

    Greg Mines; Jay Nathwani; Christopher Richard; Hillary Hanson; Rachel Wood

    2015-01-01

    The capacity factors recently provided by the Energy Information Administration (EIA) indicated this plant performance metric had declined for geothermal power plants since 2008. Though capacity factor is a term commonly used by geothermal stakeholders to express the ability of a plant to produce power, it is a term frequently misunderstood and in some instances incorrectly used. In this paper we discuss how this capacity factor is defined and utilized by the EIA, including discussion on the information that the EIA requests from operations in their 923 and 860 forms that are submitted both monthly and annually by geothermal operators. A discussion is also provided regarding the entities utilizing the information in the EIA reports, and how those entities can misinterpret the data being supplied by the operators. The intent of the paper is to inform the facility operators as the importance of the accuracy of the data that they provide, and the implications of not providing the correct information.

  18. Gromov-Hausdorff Distance for Quantum Metric Spaces

    E-Print Network [OSTI]

    Marc A. Rieffel

    2003-02-20

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

  19. Guidelines and Metrics for Configurable and Sustainable Architectural Knowledge Modelling

    E-Print Network [OSTI]

    Brezany, Peter

    Guidelines and Metrics for Configurable and Sustainable Architectural Knowledge Modelling ABSTRACT erosion, architecture knowledge, technical sustainability, technical debt. 1. INTRODUCTION Architectural to achieve architecture sustainability. Our main contributions of this paper is a configurable meta

  20. Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions

    E-Print Network [OSTI]

    Mathew, Paul

    2010-01-01

    good practice” for data center infrastructure efficiency metric. Data Center Benchmarking Guidegood practice benchmark and 0.6 kW/ton as a better practice benchmark. Data Center Benchmarking Guide

  1. A Topography-Preserving Latent Variable Model with Learning Metrics

    E-Print Network [OSTI]

    Kaski, Samuel

    A Topography-Preserving Latent Variable Model with Learning Metrics Samuel Kaski and Janne grid to the input spa- ce. The mapping preserves the topography but measures local distances in terms

  2. Square Root of Metric: The Geometry Background of Unified Theory?

    E-Print Network [OSTI]

    De-Sheng Li

    2015-09-29

    We use the square root of inverse metric described by $l=u^{\\dagger} \\gamma^{a} u \\theta_{a}$ construct an $U(4)$ gauge invariant, locally Lorentz invariant and generally covariant Lagrangian $\\mathcal{L}=\

  3. PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH

    E-Print Network [OSTI]

    Smith, Hart F.

    PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH Abstract. We use a wave packet the Simons Foundation (# 266371 to Hart Smith). 1 #12;2 HART F. SMITH H¨ormander's theorem [9] on propagation

  4. A Graph Analytic Metric for Mitigating Advanced Persistent Threat

    SciTech Connect (OSTI)

    Johnson, John R.; Hogan, Emilie A.

    2013-06-04

    This paper introduces a novel graph analytic metric that can be used to measure the potential vulnerability of a cyber network to specific types of attacks that use lateral movement and privilege escalation such as the well known Pass The Hash, (PTH). The metric is computed from an oriented subgraph of the underlying cyber network induced by selecting only those edges for which a given property holds between the two vertices of the edge. The metric with respect to a select node on the subgraph is defined as the likelihood that the select node is reachable from another arbitrary node in the graph. This metric can be calculated dynamically from the authorization and auditing layers during the network security authorization phase and will potentially enable predictive deterrence against attacks such as PTH.

  5. Analyses Of Two End-User Software Vulnerability Exposure Metrics

    SciTech Connect (OSTI)

    Jason L. Wright; Miles McQueen; Lawrence Wellman

    2012-08-01

    The risk due to software vulnerabilities will not be completely resolved in the near future. Instead, putting reliable vulnerability measures into the hands of end-users so that informed decisions can be made regarding the relative security exposure incurred by choosing one software package over another is of importance. To that end, we propose two new security metrics, average active vulnerabilities (AAV) and vulnerability free days (VFD). These metrics capture both the speed with which new vulnerabilities are reported to vendors and the rate at which software vendors fix them. We then examine how the metrics are computed using currently available datasets and demonstrate their estimation in a simulation experiment using four different browsers as a case study. Finally, we discuss how the metrics may be used by the various stakeholders of software and to software usage decisions.

  6. Analysis of Solar Cell Quality Using Voltage Metrics: Preprint

    SciTech Connect (OSTI)

    Toberer, E. S.; Tamboli, A. C.; Steiner, M.; Kurtz, S.

    2012-06-01

    The highest efficiency solar cells provide both excellent voltage and current. Of these, the open-circuit voltage (Voc) is more frequently viewed as an indicator of the material quality. However, since the Voc also depends on the band gap of the material, the difference between the band gap and the Voc is a better metric for comparing material quality of unlike materials. To take this one step further, since Voc also depends on the shape of the absorption edge, we propose to use the ultimate metric: the difference between the measured Voc and the Voc calculated from the external quantum efficiency using a detailed balance approach. This metric is less sensitive to changes in cell design and definition of band gap. The paper defines how to implement this metric and demonstrates how it can be useful in tracking improvements in Voc, especially as Voc approaches its theoretical maximum.

  7. Measures of agreement between computation and experiment:validation metrics.

    SciTech Connect (OSTI)

    Barone, Matthew Franklin; Oberkampf, William Louis

    2005-08-01

    With the increasing role of computational modeling in engineering design, performance estimation, and safety assessment, improved methods are needed for comparing computational results and experimental measurements. Traditional methods of graphically comparing computational and experimental results, though valuable, are essentially qualitative. Computable measures are needed that can quantitatively compare computational and experimental results over a range of input, or control, variables and sharpen assessment of computational accuracy. This type of measure has been recently referred to as a validation metric. We discuss various features that we believe should be incorporated in a validation metric and also features that should be excluded. We develop a new validation metric that is based on the statistical concept of confidence intervals. Using this fundamental concept, we construct two specific metrics: one that requires interpolation of experimental data and one that requires regression (curve fitting) of experimental data. We apply the metrics to three example problems: thermal decomposition of a polyurethane foam, a turbulent buoyant plume of helium, and compressibility effects on the growth rate of a turbulent free-shear layer. We discuss how the present metrics are easily interpretable for assessing computational model accuracy, as well as the impact of experimental measurement uncertainty on the accuracy assessment.

  8. On Metric Ramsey-Type Phenomena Yair Bartal Nathan Linial Manor Mendel Assaf Naor

    E-Print Network [OSTI]

    Bartal, Yair

    On Metric Ramsey-Type Phenomena Yair Bartal Nathan Linial Manor Mendel Assaf Naor Abstract The main space theory or as part of Ramsey Theory in combinatorics. Given a #12;nite metric space on n points, we.2 Generic upper bounds via metric composition . . . . . . . . . . . . . . . . . . . . . . 6 3 Metric Ramsey

  9. Use of metrics in an effective ALARA program

    SciTech Connect (OSTI)

    Bates, B.B. Jr. [Los Alamos National Laboratory, NM (United States)

    1996-06-01

    ALARA radiological protection programs require metrics to meet their objectives. Sources of metrics include external dosimetry; internal dosimetry; radiological occurrences from the occurrence reporting an processing system (ORPS); and radiological incident reports (RIR). The sources themselves contain an abundance of specific {open_quotes}indicators.{close_quotes} To choose the site-specific indicators that will be tracked and trended requires careful review. Justification is needed to defend the indicators selected and maybe even stronger justification is needed for those indicators that are available, but not chosen as a metric. Historically, the many different sources of information resided in a plethora of locations. Even the same type of metric had data located in different areas and could not be easily totaled for the entire Site. This required the end user to expend valuable time and effort to locate the data they needed. To address this problem, a central metrics database has been developed so that a customer can have all their questions addressed quickly and correctly. The database was developed in the beginning to answer some of the customer`s most frequently asked questions. IL is now also a tool to communicate the status of the radiation protection program to facility managers. Finally, it also addresses requirements contained in the Rad Con manual and the 10CFR835 implementation guides. The database uses currently available, {open_quotes}user friendly,{close_quotes} software and contains information from RIR`s, ORPS, and external dosimetry records specific to ALARA performance indicators. The database is expandable to allow new metrics input. Specific reports have been developed to assist customers in their tracking and trending of ALARA metrics. These include quarterly performance indicator reports, monthly radiological incident reports, monthly external dose history and goals tracking reports, and the future use of performance indexing.

  10. Effective use of metrics in an ALARA program

    SciTech Connect (OSTI)

    Bates, B.B. Jr.

    1996-07-01

    ALARA radiological protection programs require metrics to meet their objectives. Sources of metrics include; external dosimetry; internal dosimetry; radiological occurrences from the occurrence reporting and processing system (ORPS); and radiological incident reports (RIR). The sources themselves contain an abundance of specific ``indicators``. To choose the site-specific indicators that will be tracked and trended requires careful review. This required the end users to expend valuable time and effort to locate the data they needed. To address this problem, a central metrics database has been developed so that customers can have all their questions addressed quickly and correctly. The database was developed in the beginning to answer some of the customer`s most frequently asked questions. It is now also a tool to communicate the status of the radiation protection program to facility managers. Finally it also addresses requirements contained in the Rad Con manual and the 10CFR835 implementation guides. The database uses currently available, ``user friendly``, software and contains information from RIR`s, ORPS, and external dosimetry records specific to ALARA performance indicators. The database is expandable to allow new metrics input. Specific reports have been developed to assist customers in their tracking and trending of ALARA metrics.

  11. Metrics Evolution in an Energy Research & Development Program

    SciTech Connect (OSTI)

    Brent Dixon

    2011-08-01

    All technology programs progress through three phases: Discovery, Definition, and Deployment. The form and application of program metrics needs to evolve with each phase. During the discovery phase, the program determines what is achievable. A set of tools is needed to define program goals, to analyze credible technical options, and to ensure that the options are compatible and meet the program objectives. A metrics system that scores the potential performance of technical options is part of this system of tools, supporting screening of concepts and aiding in the overall definition of objectives. During the definition phase, the program defines what specifically is wanted. What is achievable is translated into specific systems and specific technical options are selected and optimized. A metrics system can help with the identification of options for optimization and the selection of the option for deployment. During the deployment phase, the program shows that the selected system works. Demonstration projects are established and classical systems engineering is employed. During this phase, the metrics communicate system performance. This paper discusses an approach to metrics evolution within the Department of Energy's Nuclear Fuel Cycle R&D Program, which is working to improve the sustainability of nuclear energy.

  12. The Non-Metricity Formulation of General Relativity

    E-Print Network [OSTI]

    Igor Mol

    2015-01-13

    After recalling the differential geometry of non-metric connections in the formalism of differential forms, we introduce the idea of a Non-Metricity (NM) connection, whose connection $1$--forms coincides with the non-metricity $1$--forms for a class of cobase fields. Then we formulate a theory of gravitation (equivalent to General Relativity (GR)) which admits a geometrical interpretation in a flat torsionless space where the gravitational field is completely manifest in the non-metricity of a NM connection. We define and then apply the non-metricity gauge to a gravitational Lagrangian density discovered by Wallner and which is equivalent to the Einstein-Hilbert Lagrangian density. The Einstein equations coupled to the matter currents $\\left( \\mathcal{J}_{\\alpha}\\right) $ thus becomes $\\delta dg_{\\alpha}=\\mathcal{T}_{\\alpha}+\\mathcal{J}_{\\alpha}$, where $\\left( \\mathcal{T}_{\\alpha}\\right) $ is identified as the gravitational energy-momentum currents, to which we shall find a relatively simple and physically appealing form. It is also shown that in the gravitational analogue of the Lorenz gauge, our field equations can be written as a system of Proca equations, which may be of interest in the study of propagation of gravitational-electromagnetic waves.

  13. Unit Conversion Factors Quantity Equivalent Values

    E-Print Network [OSTI]

    Ashurst, W. Robert

    Unit Conversion Factors Quantity Equivalent Values Mass 1 kg = 1000 g = 0.001 metric ton = 2·R 10.73 psia·ft3 lbmol·R 62.36 liter·torr mol·K 0.7302 ft3·atm lbmol·R Temperature Conversions: T

  14. Metrics for Evaluating the Accuracy of Solar Power Forecasting: Preprint

    SciTech Connect (OSTI)

    Zhang, J.; Hodge, B. M.; Florita, A.; Lu, S.; Hamann, H. F.; Banunarayanan, V.

    2013-10-01

    Forecasting solar energy generation is a challenging task due to the variety of solar power systems and weather regimes encountered. Forecast inaccuracies can result in substantial economic losses and power system reliability issues. This paper presents a suite of generally applicable and value-based metrics for solar forecasting for a comprehensive set of scenarios (i.e., different time horizons, geographic locations, applications, etc.). In addition, a comprehensive framework is developed to analyze the sensitivity of the proposed metrics to three types of solar forecasting improvements using a design of experiments methodology, in conjunction with response surface and sensitivity analysis methods. The results show that the developed metrics can efficiently evaluate the quality of solar forecasts, and assess the economic and reliability impact of improved solar forecasting.

  15. Tidal deformation of a slowly rotating material body. External metric

    E-Print Network [OSTI]

    Philippe Landry; Eric Poisson

    2015-07-31

    We construct the external metric of a slowly rotating, tidally deformed material body in general relativity. The tidal forces acting on the body are assumed to be weak and to vary slowly with time, and the metric is obtained as a perturbation of a background metric that describes the external geometry of an isolated, slowly rotating body. The tidal environment is generic and characterized by two symmetric-tracefree tidal moments E_{ab} and B_{ab}, and the body is characterized by its mass M, its radius R, and a dimensionless angular-momentum vector \\chi^a new quantities, which we designate as rotational-tidal Love numbers. All these Love numbers are gauge invariant in the usual sense of perturbation theory, and all vanish when the body is a black hole.

  16. Primer Control System Cyber Security Framework and Technical Metrics

    SciTech Connect (OSTI)

    Wayne F. Boyer; Miles A. McQueen

    2008-05-01

    The Department of Homeland Security National Cyber Security Division supported development of a control system cyber security framework and a set of technical metrics to aid owner-operators in tracking control systems security. The framework defines seven relevant cyber security dimensions and provides the foundation for thinking about control system security. Based on the developed security framework, a set of ten technical metrics are recommended that allow control systems owner-operators to track improvements or degradations in their individual control systems security posture.

  17. Calabi-Yau metrics for quotients and complete intersections

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

    Braun, Volker; Brelidze, Tamaz; Douglas, Michael R.; Ovrut, Burt A.

    2008-05-22

    We extend previous computations of Calabi-Yau metrics on projective hypersurfaces to free quotients, complete intersections, and free quotients of complete intersections. In particular, we construct these metrics on generic quintics, four-generation quotients of the quintic, Schoen Calabi-Yau complete intersections and the quotient of a Schoen manifold with Z? x Z? fundamental group that was previously used to construct a heterotic standard model. Various numerical investigations into the dependence of Donaldson's algorithm on the integration scheme, as well as on the Kähler and complex structure moduli, are also performed.

  18. A Comprehensive and Comparative Metric for Information Security

    E-Print Network [OSTI]

    Breu, Ruth

    A Comprehensive and Comparative Metric for Information Security Steffen Weiß1 , Oliver Weissmann2 security GmbH, Germany Abstract Measurement of information security is important for organizations , Falko Dressler1* 1 Dept. of Computer Science 7, University of Erlangen, Germany 2 atsec information

  19. Harmonic maps on domains with piecewise Lipschitz continuous metrics

    E-Print Network [OSTI]

    Wang, Changyou

    Harmonic maps on domains with piecewise Lipschitz continuous metrics Haigang Li , Changyou Wang consider harmonic map from (, g) to a compact Rie- mannian manifold (N, h) Rk without boundary. We generalize the notion of stationary harmonic maps and prove their partial regularity. We also discuss

  20. Linear harmonic oscillator in spaces with degenerate metrics

    E-Print Network [OSTI]

    N. A. Gromov

    2006-03-02

    With the help of contraction method we study the harmonic oscillator in spaces with degenerate metrics, namely, on Galilei plane and in the flat 3D Cayley-Klein spaces $R_3(j_2,j_3).$ It is shown that the inner degrees of freedom are appeared which physical dimensions are different from the dimension of the space.

  1. Quantitative Metrics of Social Response for Autism Diagnosis*

    E-Print Network [OSTI]

    Scassellati, Brian

    Quantitative Metrics of Social Response for Autism Diagnosis* Brian Scassellati Department and treatment of autism, a pervasive developmental disorder which results in selective impairment of social to address critical problems in diagnosing autism. We provide preliminary data and observations on how

  2. EERE Portfolio: Primary Benefits Metrics for FY09

    SciTech Connect (OSTI)

    [EERE

    2011-11-17

    This collection of data tables shows the benefits metrics related to energy security, environmental impacts, and economic impacts for both the entire EERE portfolio of renewable energy technologies as well as the individual technologies. Data are presented for the years 2015, 2020, 2030, and 2050, for both the NEMS and MARKAL models.

  3. Structured Testing: A Testing Methodology Using the Cyclomatic Complexity Metric

    E-Print Network [OSTI]

    Riabov, Vladimir V.

    The purpose of this document is to describe the structured testing methodology for software testing, also uses the control flow structure of software to establish path cover- age criteria. The resultant testCabe, object oriented, software development, software diagnostic, software metrics, software testing

  4. Thermodynamics and the naked singularity in the Gamma-metric

    E-Print Network [OSTI]

    K. Lochan; D. Malafarina; T. P. Singh

    2010-09-23

    We investigate a possible way of establishing a parallel between the third law of black hole mechanics, and the strong version of the third law of thermodynamics. We calculate the surface gravity and area for a naked singular null surface in the Gamma-metric and explain in what sense this behaviour violates thermodynamics.

  5. A Case Study in Developing Process Unit Energy Metrics 

    E-Print Network [OSTI]

    Davis, J. L.; Van Atta, B.

    2006-01-01

    At the 2005 IETC Conference, KBC (Davis and Knight) submitted a paper on Integrating Process Unit Energy Metrics into a Plant Energy Managemenet System. For the 2006 conference, KBC wishes to submit a paper that details an actual case study where...

  6. Metrics-driven development of an autonomous indoor

    E-Print Network [OSTI]

    Differential drive Ground-truth camera Sonars and IR Pan-tilt unit IMU Platform: depth-only perception #12 Obstacle avoidance Lag estimator Drive controller Differential drive Horizontal scan Path tracking in large environments #12;Key metric of autonomy: mean time to failure #12;10 Atrium Lounge Hallway

  7. New set of metrics for the computational performance

    E-Print Network [OSTI]

    New set of metrics for the computational performance of IS-ENES Earth System Models TR/CMGC/14/73 U performance of Earth System Models is developed and used for an initial performance analysis of the EC models.................................................................................................................................5 2.1 List of Participating Earth System Models

  8. Kerr-NUT-AdS metrics and string theory 

    E-Print Network [OSTI]

    Chen, Wei

    2009-05-15

    With the advent of supergravity and superstring theory, it is of great importance to study higher-dimensional solutions to the Einstein equations. In this dissertation, we study the higher dimensional Kerr-AdS metrics, and show how they admit...

  9. Dynamic Adaptive Search Based Software Engineering Needs Fast Approximate Metrics

    E-Print Network [OSTI]

    Harman, Mark

    1 Dynamic Adaptive Search Based Software Engineering Needs Fast Approximate Metrics Mark Harman. University College Dublin, Ireland. Abstract--Search Based Software Engineering (SBSE) uses fitness functions to guide an automated search for solutions to challenging software engineering problems. The fitness

  10. Calculation and Optimization of Thresholds for Sets of Software Metrics

    E-Print Network [OSTI]

    Grabowski, Jens

    ,grabowski,waack}@cs.uni-goettingen.de Abstract. Many software quality models use software metrics to determine qual- ity attributes of software/IEC, 2005). To up- hold the required standard of quality, the assessment and assurance of software quality characteristics are an import part of the execution of software projects. In many models to assess the quality

  11. Using Software Metrics Tools for Maintenance Decisions: A Classroom Exercise

    E-Print Network [OSTI]

    Katchabaw, Michael James

    identify modules with low software quality; renovating those modules would be a step toward improving (Bauer) taught a senior under­ graduate course entitled ``Software Processes, Measure­ ments and Quality''. The course concentrated on the use of software metrics to evaluate software quality. We decided to use

  12. Metrics and Smoothing of TranslationInvariant Radon

    E-Print Network [OSTI]

    Greenblatt, Michael

    Metrics and Smoothing of Translation­Invariant Radon Transforms Along Curves Michael Greenblatt 1: (617) 253­4358 Running head: Radon Transforms 1 This research was supported in part by NSF grant DMS­invariant Radon transforms along curves for # # # and p

  13. An effective theory of metrics with maximal acceleration

    E-Print Network [OSTI]

    Ricardo Gallego Torromé

    2015-10-15

    A geometric theory for spacetimes whose world lines associated with physical particles have an upper bound for the proper acceleration is developed. After some fundamental remarks on the requirements that the classical dynamics for point particles should hold, the notion of generalized metric and a theory of maximal proper acceleration are introduced. A perturbative approach to metrics of maximal proper acceleration is discussed and we show how it provides a consistent theory where the associated Lorentzian metric corresponds to the limit when the maximal proper acceleration goes to infinity. Then several of the physical and kinematical properties of the maximal acceleration metric are investigated, including a discussion of the rudiments of the causal theory and the introduction of the notions of radar distance and celerity function. We discuss the corresponding modification of the Einstein mass-energy relation when the associated Lorentzian geometry is flat. In such context it is also proved that the physical dispersion relation is relativistic. Two possible physical scenarios where the modified mass-energy relation could be confronted against experiment are briefly discussed.

  14. Mining Simulation Metrics for Failure Triage in Regression Testing

    E-Print Network [OSTI]

    Veneris, Andreas

    are grouped by applying data-mining clustering algorithms. Fi- nally, the generated failure clustersMining Simulation Metrics for Failure Triage in Regression Testing Zissis Poulos1 , Andreas Veneris of failures can be exposed. These failures need to be properly grouped and distributed among engineers

  15. Methods, Metrics and Motivation for a Green Computer Science Program

    E-Print Network [OSTI]

    Way, Thomas

    and, more recently, economically sensible [13]. "Going Green" implies reducing your energy useMethods, Metrics and Motivation for a Green Computer Science Program Mujtaba Talebi and Thomas Way are uniquely positioned to promote greater awareness of Green Computing, using the academic setting

  16. Metrics and Benchmarks for Energy Efficiency in Laboratories

    SciTech Connect (OSTI)

    Mathew, Paul

    2007-10-26

    A wide spectrum of laboratory owners, ranging from universities to federal agencies, have explicit goals for energy efficiency in their facilities. For example, the Energy Policy Act of 2005 (EPACT 2005) requires all new federal buildings to exceed ASHRAE 90.1-2004 1 by at least 30 percent. The University of California Regents Policy requires all new construction to exceed California Title 24 2 by at least 20 percent. A new laboratory is much more likely to meet energy efficiency goals if quantitative metrics and targets are explicitly specified in programming documents and tracked during the course of the delivery process. If efficiency targets are not explicitly and properly defined, any additional capital costs or design time associated with attaining higher efficiencies can be difficult to justify. The purpose of this guide is to provide guidance on how to specify and compute energy efficiency metrics and benchmarks for laboratories, at the whole building as well as the system level. The information in this guide can be used to incorporate quantitative metrics and targets into the programming of new laboratory facilities. Many of these metrics can also be applied to evaluate existing facilities. For information on strategies and technologies to achieve energy efficiency, the reader is referred to Labs21 resources, including technology best practice guides, case studies, and the design guide (available at www.labs21century.gov/toolkit).

  17. Metric Attractors for Smooth Unimodal Maps Jacek Graczyk

    E-Print Network [OSTI]

    Sands, Duncan

    Metric Attractors for Smooth Unimodal Maps Jacek Graczyk #3; Dept. of Math. University of Paris XI 91405 Orsay Cedex France Duncan Sands CNRS, Dept. of Math. University of Paris XI 91405 Orsay Cedex attractor for some dynamics if the basin of attraction B(A) := fx : !(x) #26; Ag of A has positive Lebesgue

  18. Urgent need for a common metric to make precipitation

    E-Print Network [OSTI]

    Dukes, Jeffrey

    Letters Urgent need for a common metric to make precipitation manipulation experiments comparable of altered precipitation patterns, by contrast, have received far less atten- tion. The results of precipitation manipulation experiments were only recently synthesized for the first time (Wu et al., 2011

  19. Einstein static Universe in hybrid metric-Palatini gravity

    E-Print Network [OSTI]

    Christian G. Boehmer; Francisco S. N. Lobo; Nicola Tamanini

    2015-02-18

    Hybrid metric-Palatini gravity is a recent and novel approach to modified theories of gravity, which consists of adding to the metric Einstein-Hilbert Lagrangian an f(R) term constructed a la Palatini. It was shown that the theory passes local tests even if the scalar field is very light, and thus implies the existence of a long-range scalar field, which is able to modify the dynamics in galactic and cosmological scales, but leaves the Solar System unaffected. In this work, motivated by the possibility that the Universe may have started out in an asymptotically Einstein static state in the inflationary universe context, we analyse the stability of the Einstein static Universe by considering linear homogeneous perturbations in the respective dynamically equivalent scalar-tensor representation of hybrid metric-Palatini gravity. Considering linear homogeneous perturbations, the stability regions of the Einstein static universe are parametrized by the first and second derivatives of the scalar potential, and it is explicitly shown that a large class of stable solutions exists in the respective parameter space, in the context of hybrid metric-Palatini gravity.

  20. Performance metrics for Inertial Confinement Fusion implosions: aspects of the technical framework for measuring progress in the National Ignition Campaign

    SciTech Connect (OSTI)

    Spears, B K; Glenzer, S; Edwards, M J; Brandon, S; Clark, D; Town, R; Cerjan, C; Dylla-Spears, R; Mapoles, E; Munro, D; Salmonson, J; Sepke, S; Weber, S; Hatchett, S; Haan, S; Springer, P; Moses, E; Mapoles, E; Munro, D; Salmonson, J; Sepke, S

    2011-12-16

    The National Ignition Campaign (NIC) uses non-igniting 'THD' capsules to study and optimize the hydrodynamic assembly of the fuel without burn. These capsules are designed to simultaneously reduce DT neutron yield and to maintain hydrodynamic similarity with the DT ignition capsule. We will discuss nominal THD performance and the associated experimental observables. We will show the results of large ensembles of numerical simulations of THD and DT implosions and their simulated diagnostic outputs. These simulations cover a broad range of both nominal and off nominal implosions. We will focus on the development of an experimental implosion performance metric called the experimental ignition threshold factor (ITFX). We will discuss the relationship between ITFX and other integrated performance metrics, including the ignition threshold factor (ITF), the generalized Lawson criterion (GLC), and the hot spot pressure (HSP). We will then consider the experimental results of the recent NIC THD campaign. We will show that we can observe the key quantities for producing a measured ITFX and for inferring the other performance metrics. We will discuss trends in the experimental data, improvement in ITFX, and briefly the upcoming tuning campaign aimed at taking the next steps in performance improvement on the path to ignition on NIF.

  1. The Multivariate Merit Factor of a Boolean T. Aaron Gulliver

    E-Print Network [OSTI]

    Parker, Matthew Geoffrey

    The Multivariate Merit Factor of a Boolean Function T. Aaron Gulliver Dept. of Electrical metric, the multivariate merit factor (MMF) of a Boolean function, is presented, and various infinite recursive quadratic sequence constructions are given for which both uni­ variate and multivariate merit

  2. Derivation of a Levelized Cost of Coating (LCOC) metric for evaluation of solar selective absorber materials

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

    Ho, C. K.; Pacheco, J. E.

    2015-06-05

    A new metric, the Levelized Cost of Coating (LCOC), is derived in this paper to evaluate and compare alternative solar selective absorber coatings against a baseline coating (Pyromark 2500). In contrast to previous metrics that focused only on the optical performance of the coating, the LCOC includes costs, durability, and optical performance for more comprehensive comparisons among candidate materials. The LCOC is defined as the annualized marginal cost of the coating to produce a baseline annual thermal energy production. Costs include the cost of materials and labor for initial application and reapplication of the coating, as well as the costmore »of additional or fewer heliostats to yield the same annual thermal energy production as the baseline coating. Results show that important factors impacting the LCOC include the initial solar absorptance, thermal emittance, reapplication interval, degradation rate, reapplication cost, and downtime during reapplication. The LCOC can also be used to determine the optimal reapplication interval to minimize the levelized cost of energy production. As a result, similar methods can be applied more generally to determine the levelized cost of component for other applications and systems.« less

  3. Derivation of a Levelized Cost of Coating (LCOC) metric for evaluation of solar selective absorber materials

    SciTech Connect (OSTI)

    Ho, C. K.; Pacheco, J. E.

    2015-06-05

    A new metric, the Levelized Cost of Coating (LCOC), is derived in this paper to evaluate and compare alternative solar selective absorber coatings against a baseline coating (Pyromark 2500). In contrast to previous metrics that focused only on the optical performance of the coating, the LCOC includes costs, durability, and optical performance for more comprehensive comparisons among candidate materials. The LCOC is defined as the annualized marginal cost of the coating to produce a baseline annual thermal energy production. Costs include the cost of materials and labor for initial application and reapplication of the coating, as well as the cost of additional or fewer heliostats to yield the same annual thermal energy production as the baseline coating. Results show that important factors impacting the LCOC include the initial solar absorptance, thermal emittance, reapplication interval, degradation rate, reapplication cost, and downtime during reapplication. The LCOC can also be used to determine the optimal reapplication interval to minimize the levelized cost of energy production. As a result, similar methods can be applied more generally to determine the levelized cost of component for other applications and systems.

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

    E-Print Network [OSTI]

    Bayazit, Osman Burchan

    1998-01-01

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

  5. Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and...

    Office of Scientific and Technical Information (OSTI)

    Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and Conformal Quantum Mechanics Citation Details In-Document Search Title: Modified Anti-de-Sitter Metric, Light-Front...

  6. Co-Designing Sustainable Communities: The Identification and Incorporation of Social Performance Metrics in Native American Sustainable Housing and Renewable Energy System Design

    E-Print Network [OSTI]

    Shelby, Ryan

    2013-01-01

    to (1) situate sustainability and its performance metrics inconcept of sustainability and their performance metrics. Thefor sustainability and the social performance metrics for

  7. Characterization of symmetric monotone metrics on the state space of quantum systems

    E-Print Network [OSTI]

    Frank Hansen

    2006-03-29

    The quantum Fisher information is a Riemannian metric, defined on the state space of a quantum system, which is symmetric and decreasing under stochastic mappings. Contrary to the classical case such a metric is not unique. We complete the characterization, initiated by Morozova, Chentsov and Petz, of these metrics by providing a closed and tractable formula for the set of Morozova-Chentsov functions. In addition, we provide a continuously increasing bridge between the smallest and largest symmetric monotone metrics.

  8. QUATERNIONIC KAHLER AND SPIN(7) METRICS ARISING FROM QUATERNIONIC CONTACT EINSTEIN STRUCTURES

    E-Print Network [OSTI]

    Vassilev, Dimiter N.

    QUATERNIONIC K¨AHLER AND SPIN(7) METRICS ARISING FROM QUATERNIONIC CONTACT EINSTEIN STRUCTURES L construct left invariant quaternionic contact (qc) structures on Lie groups with zero and non-zero torsion, equipped with a certain qc structure, has a quaternionic K¨ahler metric as well as a metric with holonomy

  9. On Some Low Distortion Metric Ramsey Problems Yair Bartal # Nathan Linial + Manor Mendel # Assaf Naor

    E-Print Network [OSTI]

    Bartal, Yair

    On Some Low Distortion Metric Ramsey Problems Yair Bartal # Nathan Linial + Manor Mendel # Assaf Naor December 17, 2002 Abstract In this note, we consider the metric Ramsey problem for the normed metric spaces, no four points of which embed isometrically in # p . 1 Introduction A Ramsey­type theorem

  10. Evaluation of ocean carbon cycle models with data-based metrics K. Matsumoto,1

    E-Print Network [OSTI]

    Drange, Helge

    Evaluation of ocean carbon cycle models with data-based metrics K. Matsumoto,1 J. L. Sarmiento,2 R), Evaluation of ocean carbon cycle models with data-based metrics, Geophys. Res. Lett., 31, L07303, doi:10 of quantitative, data-based metrics of model skill. Further complications arise because models have different

  11. On the use of software quality metrics to im-prove physical properties of embedded systems

    E-Print Network [OSTI]

    Wagner, Flávio Rech

    On the use of software quality metrics to im- prove physical properties of embedded systems Ricardo Abstract: As software production achieves a growing importance in the embed- ded systems world, quality of the correlation between software quality metrics and physical metrics for embedded software. By means

  12. JBOOMT: Jade Bird Object-Oriented Metrics Tool* Tao XIE, Wanghong YUAN, Hong MEI, Fuqing YANG

    E-Print Network [OSTI]

    Xie, Tao

    on software productivity and software quality control has spurred the research on software metrics technology-oriented program and thus evaluate the quality of the software according to the specified hierarchical metrics quality, there exist needs for better technique of software development and software metrics during

  13. Rank and Relevance in Novelty and Diversity Metrics for Recommender Systems

    E-Print Network [OSTI]

    Castells Universidad Autónoma de Madrid Escuela Politécnica Superior, Departamento de Ingeniería for the definition of novelty and diversity metrics that unifies and generalizes several state of the art metrics. We a for- mal metric framework that unifies and generalizes several state of the art measures, and en

  14. WESTERN U.S. STREAM FLOW METRIC DATASET Providing scientific knowledge and technology to sustain

    E-Print Network [OSTI]

    . These are based on daily simulations of the Variable Infiltration Capacity (VIC) macroscale hydrologic model, hydrologic modeling, variable infiltration capacity (VIC), flow metrics, aquatic communities Flow metrics metric da- taset makes it possible to study the effects of droughts, changes in snow- pack, water

  15. Advanced Space Propulsion Based on Vacuum (Spacetime Metric) Engineering

    E-Print Network [OSTI]

    Harold E. Puthoff

    2012-02-03

    A theme that has come to the fore in advanced planning for long-range space exploration is the concept that empty space itself (the quantum vacuum, or spacetime metric) might be engineered so as to provide energy/thrust for future space vehicles. Although far-reaching, such a proposal is solidly grounded in modern physical theory, and therefore the possibility that matter/vacuum interactions might be engineered for space-flight applications is not a priori ruled out. As examples, the current development of theoretical physics addresses such topics as warp drives, traversable wormholes and time machines that provide for such vacuum engineering possibilities. We provide here from a broad perspective the physics and correlates/consequences of the engineering of the spacetime metric.

  16. On the existence of certain axisymmetric interior metrics

    SciTech Connect (OSTI)

    Angulo Santacruz, C.; Batic, D.; Nowakowski, M.

    2010-08-15

    One of the effects of noncommutative coordinate operators is that the delta function connected to the quantum mechanical amplitude between states sharp to the position operator gets smeared by a Gaussian distribution. Although this is not the full account of the effects of noncommutativity, this effect is, in particular, important as it removes the point singularities of Schwarzschild and Reissner-Nordstroem solutions. In this context, it seems to be of some importance to probe also into ringlike singularities which appear in the Kerr case. In particular, starting with an anisotropic energy-momentum tensor and a general axisymmetric ansatz of the metric together with an arbitrary mass distribution (e.g., Gaussian), we derive the full set of Einstein equations that the noncommutative geometry inspired Kerr solution should satisfy. Using these equations we prove two theorems regarding the existence of certain Kerr metrics inspired by noncommutative geometry.

  17. Development of Technology Readiness Level (TRL) Metrics and Risk Measures

    SciTech Connect (OSTI)

    Engel, David W.; Dalton, Angela C.; Anderson, K. K.; Sivaramakrishnan, Chandrika; Lansing, Carina

    2012-10-01

    This is an internal project milestone report to document the CCSI Element 7 team's progress on developing Technology Readiness Level (TRL) metrics and risk measures. In this report, we provide a brief overview of the current technology readiness assessment research, document the development of technology readiness levels (TRLs) specific to carbon capture technologies, describe the risk measures and uncertainty quantification approaches used in our research, and conclude by discussing the next steps that the CCSI Task 7 team aims to accomplish.

  18. UNIFIED APPROACH TO CONFORMALLY INVARIANT METRICS ON RIEMANN SURFACES

    E-Print Network [OSTI]

    Sugawa, Toshiyuki

    -metrics aeR defined for all Riemann surfaces R i* *s said to be holomorphically contractive if f*aeR0 aeRR aeR kR for all Riemann surfaces R, where cR and kR den* *ote the Carath-metri* *cs aeR is said to be monotone if aeR0 aeR holds for each Riemann surface R and for each

  19. Cosmology via Metric-Independent Volume-Form Dynamics

    E-Print Network [OSTI]

    Guendelman, Eduardo; Pacheva, Svetlana

    2015-01-01

    The method of non-Riemannian volume-forms (metric-independent covariant integration measure densities on the spacetime manifold) is applied to construct a unified model of dynamical dark energy plus dark matter as a dust fluid resulting from a hidden Noether symmetry of the pertinent scalar field Lagrangian. Canonical Hamiltonian treatment and Wheeler-DeWitt quantization of the latter model are briefly discussed.

  20. Colliding Wave Solutions in a Symmetric Non-metric Theory

    E-Print Network [OSTI]

    Ozay Gurtug; Mustafa Halilsoy

    2008-09-22

    A method is given to generate the non-linear interaction (collision) of linearly polarized gravity coupled torsion waves in a non-metric theory. Explicit examples are given in which strong mutual focussing of gravitational waves containing impulsive and shock components coupled with torsion waves does not result in a curvature singularity. However, the collision of purely torsion waves displays a curvature singularity in the region of interaction.

  1. The d-bar-Neumann operator and the Kobayashi metric 

    E-Print Network [OSTI]

    Kim, Mijoung

    2004-09-30

    compactness of the partialdiff-Neumann operator and the property K in any convex domain. We also find a local property of the Kobayashi metric [Theorem IV.1], in which the domain is not necessary pseudoconvex. We find a more general condition than finite type... . . . . . . . . . . . . . . . . . . . 7 1. L2 Existence Theorem . . . . . . . . . . . . . . . . . . 8 2. Globally Regular Operators . . . . . . . . . . . . . . . 10 3. Compactness in the partialdiff-Neumann Problem . . . . . . . 11 III INHERITANCE OF NONCOMPACTNESS OF THE partialdiff...

  2. On the electromagnetic constitutive laws that are equivalent to spacetime metrics

    E-Print Network [OSTI]

    D. H. Delphenich

    2014-09-17

    The raising of both indices in the components of the Minkowski electromagnetic field strength 2-form to give the components of the electromagnetic excitation bivector field can be regarded as being equivalent to an electromagnetic constitutive law, as well as being defined by the components of the spacetime metric. This notion is clarified, and the nature of the equivalent dielectric tensors and magnetic permeability tensors that are defined by some common spacetime metrics is discussed. The relationship of the basic construction to effective metrics is discussed, and, in particular, the fact that this effective metric is more general than the Gordon metric.

  3. Characterization of all possible orbits in the Schwarzschild metric revisited

    E-Print Network [OSTI]

    F. T. Hioe; David Kuebel

    2012-07-30

    All possible orbital trajectories and their analytical expressions in the Schwarzschild metric are presented in a single complete map characterized by two dimensionless parameters. While three possible pairs of parameters with different advantages are described, the parameter space that gives the most convenient reduction to the Newtonian case is singled out and used which leads to a new insight on Newtonian limits among other results. Numerous analytic relations are presented. A comparison is made with the widely used formulation and presentation given by S. Chandrasekhar.

  4. Polarizable vacuum analysis of the gravitational metric tensor

    E-Print Network [OSTI]

    Xing-Hao Ye

    2009-03-21

    The gravitational metric tensor implies a variable dielectric tensor of vacuum around gravitational matter. The curved spacetime in general relativity is then associated with a polarizable vacuum. It is found that the number density of the virtual dipoles in vacuum decreases with the distance from the gravitational centre. This result offers a polarizable vacuum interpretation of the gravitational force. Also, the anisotropy of vacuum polarization is briefly discussed, which appeals for observational proof of anisotropic light propagation in a vacuum altered by gravitational or electromagnetic field.

  5. Metrics for the National SCADA Test Bed Program

    SciTech Connect (OSTI)

    Craig, Philip A.; Mortensen, J.; Dagle, Jeffery E.

    2008-12-05

    The U.S. Department of Energy Office of Electricity Delivery and Energy Reliability (DOE-OE) National SCADA Test Bed (NSTB) Program is providing valuable inputs into the electric industry by performing topical research and development (R&D) to secure next generation and legacy control systems. In addition, the program conducts vulnerability and risk analysis, develops tools, and performs industry liaison, outreach and awareness activities. These activities will enhance the secure and reliable delivery of energy for the United States. This report will describe metrics that could be utilized to provide feedback to help enhance the effectiveness of the NSTB Program.

  6. On the metric structure of space-time

    E-Print Network [OSTI]

    Jochen Rau

    2010-09-28

    I present an analysis of the physical assumptions needed to obtain the metric structure of space-time. For this purpose I combine the axiomatic approach pioneered by Robb with ideas drawn from works on Weyl's "Raumproblem". The concept of a Lorentzian manifold is replaced by the weaker concept of an "event manifold", defined in terms of volume element, causal structure and affine connection(s). Exploiting properties of its structure group, I show that distinguishing Lorentzian manifolds from other classes of event manifolds requires the key idea of general relativity: namely that the manifold's physical structure, rather than being fixed, is itself a variable.

  7. User's Guide to the Energy Charting and Metrics Tool (ECAM)

    SciTech Connect (OSTI)

    Taasevigen, Danny J.; Koran, William

    2012-02-28

    The intent of this user guide is to provide a brief description of the functionality of the Energy Charting and Metrics (ECAM) tool, including the expanded building re-tuning functionality developed for Pacific Northwest National laboratory (PNNL). This document describes the tool's general functions and features, and offers detailed instructions for PNNL building re-tuning charts, a feature in ECAM intended to help building owners and operators look at trend data (recommended 15-minute time intervals) in a series of charts (both time series and scatter) to analyze air-handler, zone, and central plant information gathered from a building automation system (BAS).

  8. Widget:CrazyEggMetrics | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw,What Is a SmallAnchorText JumpsourceCrazyEggMetrics Jump

  9. Property:ExplorationCostPerMetric | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to: navigation,Property Edit with form HistoryExplorationCostPerMetric Jump to:

  10. Property:ExplorationTimePerMetric | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to: navigation,Property Edit withExplorationTimePerMetric Jump to: navigation,

  11. A wavy way leading to the Kerr metric

    E-Print Network [OSTI]

    Gurtug, O

    2015-01-01

    From inherent non-linearity two gravitational waves, unless they are unidirectional, fail to satisfy a superposition law. They collide to develop a new spacetime carrying the imprints of the incoming waves. Same behaviour is valid also for any massless lightlike field. As a result of the violent collision process either a naked singularity or a Cauchy horizon (CH) develops. It was shown by Chandrasekhar and Xanthopoulos (CX) that a particular class of colliding gravitational waves (CGW) spacetime is locally isometric to the Kerr metric for rotating black holes. This relation came to be known as the CX duality. Such a duality can be exploited as an alternative derivation for the Kerr metric as we do herein. We claim at the same time that the duality points to the deeper rooted wave - particle correlation in a futuristic quantum gravity. In such a scenario black hole acts as the representative of a particle while CGW spacetime stands for its wavelike complementary partner. Not each case gives rise to a CH but t...

  12. Optical Anisotropy of Schwarzschild Metric within Equivalent Medium Framework

    E-Print Network [OSTI]

    Sina Khorasani; Bizhan Rashidian

    2009-12-16

    It is has been long known that the curved space in the presence of gravitation can be described as a non-homogeneous anisotropic medium in flat geometry with different constitutive equations. In this article, we show that the eigenpolarizations of such medium can be exactly solved, leading to a pseudo-isotropic description of curved vacuum with two refractive index eigenvalues having opposite signs, which correspond to forward and backward travel in time. We conclude that for a rotating universe, time-reversal symmetry is broken. We also demonstrate the applicability of this method to Schwarzschild metric and derive exact forms of refractive index. We derive the subtle optical anisotropy of space around a spherically symmetric, non-rotating and uncharged blackhole in the form of an elegant closed form expression, and show that the refractive index in such a pseudo-isotropic system would be a function of coordinates as well as the direction of propagation. Corrections arising from such anisotropy in the bending of light are shown and a simplified system of equations for ray-tracing in the equivalent medium of Schwarzschild metric is found.

  13. Conceptual Soundness, Metric Development, Benchmarking, and Targeting for PATH Subprogram Evaluation

    SciTech Connect (OSTI)

    Mosey. G.; Doris, E.; Coggeshall, C.; Antes, M.; Ruch, J.; Mortensen, J.

    2009-01-01

    The objective of this study is to evaluate the conceptual soundness of the U.S. Department of Housing and Urban Development (HUD) Partnership for Advancing Technology in Housing (PATH) program's revised goals and establish and apply a framework to identify and recommend metrics that are the most useful for measuring PATH's progress. This report provides an evaluative review of PATH's revised goals, outlines a structured method for identifying and selecting metrics, proposes metrics and benchmarks for a sampling of individual PATH programs, and discusses other metrics that potentially could be developed that may add value to the evaluation process. The framework and individual program metrics can be used for ongoing management improvement efforts and to inform broader program-level metrics for government reporting requirements.

  14. Laser Ranging Delay in the Bi-Metric Theory of Gravity

    E-Print Network [OSTI]

    Sergei M. Kopeikin; Wei-Tou Ni

    2006-03-02

    We introduce a linearized bi-metric theory of gravity with two metrics. The metric g_{ab} describes null hypersurfaces of the gravitational field while light moves on null hypersurfaces of the optical metric \\bar{g}_{ab}. Bi-metrism naturally arises in vector-tensor theories with matter being non-minimally coupled to gravity via long-range vector field. We derive explicit Lorentz-invariant solution for a light ray propagating in space-time of the bi-metric theory and disentangle relativistic effects associated with the two metrics. This anlysis can be valuable for future spaceborne laser missions ASTROD and LATOR dedicated to map various relativistic gravity parameters in the solar system to unparalleled degree of accuracy.

  15. Perturbations of the metric induced by back - reaction in the warm inflation scenario

    E-Print Network [OSTI]

    Mauricio Bellini

    1999-12-20

    A second-order expansion for the quantum fluctuations of the matter field was considered in the framemork of the warm inflation scenario. The friction and Hubble parameters were expanded by means of a semiclassical approach. The fluctuations of the Hubble parameter generates fluctuations of the metric. These metric fluctuations produce an effective term of curvature. The power spectrum for the metric fluctuations can be calculated on the infrared sector.

  16. Cover art: issues in the metric-guided and metric-less placement of random and stochastic template banks

    E-Print Network [OSTI]

    Gian Mario Manca; Michele Vallisneri

    2010-01-14

    The efficient placement of signal templates in source-parameter space is a crucial requisite for exhaustive matched-filtering searches of modeled gravitational-wave sources. Unfortunately, the current placement algorithms based on regular parameter-space meshes are difficult to generalize beyond simple signal models with few parameters. Various authors have suggested that a general, flexible, yet efficient alternative can be found in randomized placement strategies such as random placement and stochastic placement, which enhances random placement by selectively rejecting templates that are too close to others. In this article we explore several theoretical and practical issues in randomized placement: the size and performance of the resulting template banks; the effects of parameter-space boundaries; the use of quasi-random (self avoiding) number sequences; most important, the implementation of these algorithms in curved signal manifolds with and without the use of a Riemannian signal metric, which may be difficult to obtain. Specifically, we show how the metric can be replaced with a discrete triangulation-based representation of local geometry. We argue that the broad class of randomized placement algorithms offers a promising answer to many search problems, but that the specific choice of a scheme and its implementation details will still need to be fine-tuned separately for each problem.

  17. Mitigating the Risks of Thresholdless Metrics in Machine Learning Kendrick Boyd

    E-Print Network [OSTI]

    Page Jr., C. David

    Mitigating the Risks of Thresholdless Metrics in Machine Learning Evaluation by Kendrick Boyd on Empirical Evaluation 24 3.1 Introduction 24 3.2

  18. Energy-Momentum Distribution of the Weyl-Lewis-Papapetrou and the Levi-Civita Metrics

    E-Print Network [OSTI]

    M. Sharif

    2007-11-17

    This paper is devoted to compute the energy-momentum densities for two exact solutions of the Einstein field equations by using the prescriptions of Einstein, Landau-Lifshitz, Papapetrou and M\\"{o}ller. The spacetimes under consideration are the Weyl-Lewis-Papapetrou and the Levi-Civita metrics. The Weyl metric becomes the special case of the Weyl-Lewis-Papapetrou solution. The Levi-Civita metric provides constant momentum in each prescription with different energy density. The Weyl-Lewis-Papapetrou metric yields all the quantities different in each prescription. These differences support the well-defined proposal developed by Cooperstock and from the energy-momentum tensor itself.

  19. Building Cost and Performance Metrics: Data Collection Protocol, Revision 1.0

    SciTech Connect (OSTI)

    Fowler, Kimberly M.; Solana, Amy E.; Spees, Kathleen L.

    2005-09-29

    This technical report describes the process for selecting and applying the building cost and performance metrics for measuring sustainably designed buildings in comparison to traditionally designed buildings.

  20. DOE Will Dispose of 34 Metric Tons of Plutonium by Turning it...

    National Nuclear Security Administration (NNSA)

    Will Dispose of 34 Metric Tons of Plutonium by Turning it into Fuel for Civilian Reactors | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People...

  1. What's inside the cone? Numerically reconstructing the metric from observations

    SciTech Connect (OSTI)

    Bester, H.L.; Larena, J.; Van der Walt, P.J.; Bishop, N.T., E-mail: g07b1135@campus.ru.ac.za, E-mail: j.larena@ru.ac.za, E-mail: p.vanderwalt@ru.ac.za, E-mail: n.bishop@ru.ac.za [Department of Mathematics, Rhodes University, Grahamstown, 6140 South Africa (South Africa)

    2014-02-01

    We investigate the possibility of using Gaussian process regression to smooth data on the current past null-cone for use as the input to a relativistic integration scheme. The algorithm we present is designed to reconstruct the metric of spacetime within the class of spherically symmetric dust universes, with or without a cosmological constant. Assuming that gravity is well described by General Relativity, we demonstrate how the algorithm can be employed to test the Copernican principle based on currently available observations. It is shown that currently available data is not sufficient for a conclusive result. The intrinsic noise present in realistic data presents a challenge for our smoothing algorithm and we discuss some of its limitations as well as possible extensions to it. We conclude by demonstrating how a direct determination of the cosmological constant is possible using redshift drift data.

  2. On the metric operator for quantum cylindrical waves

    E-Print Network [OSTI]

    Madhavan Varadarajan

    1999-10-12

    Every (1 polarization) cylindrical wave solution of vacuum general relativity is completely determined by a corresponding axisymmetric solution to the free scalar wave equation on an auxilliary 2+1 dimensional flat spacetime. The physical metric at radius R is determined by the energy, $\\gamma (R)$, of the scalar field in a box (in the flat spacetime) of radius R. In a recent work, among other important results, Ashtekar and Pierri have introduced a strategy to study the quantum geometry in this system, through a regularized quantum counterpart of $\\gamma (R)$. We show that this regularized object is a densely defined symmetric operator, thereby correcting an error in their proof of this result. We argue that it admits a self adjoint extension and show that the operator, unlike its classical counterpart, is not positive.

  3. A fingerprint based metric for measuring similarities of crystalline structures

    E-Print Network [OSTI]

    Zhu, Li; Fuhrer, Tobias; Schaefer, Bastian; Faraji, Somayeh; Rostami, Samara; Ghasemi, S Alireza; Sadeghi, Ali; Grauzinyte, Migle; Wolverton, Christopher; Goedecker, Stefan

    2015-01-01

    Measuring similarities/dissimilarities between atomic structures is important for the exploration of potential energy landscapes. However, the cell vectors together with the coordinates of the atoms, which are generally used to describe periodic systems, are quantities not suitable as fingerprints to distinguish structures. Based on a characterization of the local environment of all atoms in a cell we introduce crystal fingerprints that can be calculated easily and allow to define configurational distances between crystalline structures that satisfy the mathematical properties of a metric. This distance between two configurations is a measure of their similarity/dissimilarity and it allows in particular to distinguish structures. The new method is an useful tool within various energy landscape exploration schemes, such as minima hopping, random search, swarm intelligence algorithms and high-throughput screenings.

  4. Variable-metric diffraction crystals for x-ray optics

    SciTech Connect (OSTI)

    Smither, R.K.; Fernandez, P.B. )

    1992-02-01

    A variable-metric (VM) crystal is one in which the spacing between the crystalline planes changes with position in the crystal. This variation can be either parallel to the crystalline planes or perpendicular to the crystalline planes of interest and can be produced by either introducing a thermal gradient in the crystal or by growing a crystal made of two or more elements and changing the relative percentages of the two elements as the crystal is grown. A series of experiments were performed in the laboratory to demonstrate the principle of the variable-metric crystal and its potential use in synchrotron beam lines. One of the most useful applications of the VM crystal is to increase the number of photons per unit bandwidth in a diffracted beam without losing any of the overall intensity. In a normal synchrotron beam line that uses a two-crystal monochromator, the bandwidth of the diffracted photon beam is determined by the vertical opening angle of the beam which is typically 0.10--0.30 mrad or 20--60 arcsec. When the VM crystal approach is applied, the bandwidth of the beam can be made as narrow as the rocking curve of the diffracting crystal, which is typically 0.005--0.050 mrad or 1--10 arcsec. Thus a very large increase of photons per unit bandwidth (or per unit energy) can be achieved through the use of VM crystals. When the VM principle is used with bent crystals, new kinds of x-ray optical elements can be generated that can focus and defocus x-ray beams much like simple lenses where the focal length of the lens can be changed to match its application. Thus both large magnifications and large demagnifications can be achieved as well as parallel beams with narrow bandwidths.

  5. Metrics for Assessment of Smart Grid Data Integrity Attacks

    SciTech Connect (OSTI)

    Annarita Giani; Miles McQueen; Russell Bent; Kameshwar Poolla; Mark Hinrichs

    2012-07-01

    There is an emerging consensus that the nation’s electricity grid is vulnerable to cyber attacks. This vulnerability arises from the increasing reliance on using remote measurements, transmitting them over legacy data networks to system operators who make critical decisions based on available data. Data integrity attacks are a class of cyber attacks that involve a compromise of information that is processed by the grid operator. This information can include meter readings of injected power at remote generators, power flows on transmission lines, and relay states. These data integrity attacks have consequences only when the system operator responds to compromised data by redispatching generation under normal or contingency protocols. These consequences include (a) financial losses from sub-optimal economic dispatch to service loads, (b) robustness/resiliency losses from placing the grid at operating points that are at greater risk from contingencies, and (c) systemic losses resulting from cascading failures induced by poor operational choices. This paper is focused on understanding the connections between grid operational procedures and cyber attacks. We first offer two examples to illustrate how data integrity attacks can cause economic and physical damage by misleading operators into taking inappropriate decisions. We then focus on unobservable data integrity attacks involving power meter data. These are coordinated attacks where the compromised data are consistent with the physics of power flow, and are therefore passed by any bad data detection algorithm. We develop metrics to assess the economic impact of these attacks under re-dispatch decisions using optimal power flow methods. These metrics can be use to prioritize the adoption of appropriate countermeasures including PMU placement, encryption, hardware upgrades, and advance attack detection algorithms.

  6. Gauge theory of gravity: Electrically charged solutions within the metric--affine framework

    E-Print Network [OSTI]

    Friedrich W. Hehl; José Socorro

    1998-03-10

    We find a class of electrically charged exact solutions for a toy model of metric-affine gravity. Their metric is of the Pleba\\'nski-Demia\\'nski type and their nonmetricity and torsion are represented by a triplet of covectors with dilation, shear, and spin charges.

  7. How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data

    E-Print Network [OSTI]

    How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center.E., Program manager Lawrence Berkeley National Laboratory 1 Introduction Data centers are among the most

  8. Measurement and Characterization of Link Quality Metrics in Energy Constrained Wireless Sensor

    E-Print Network [OSTI]

    Uysal-Biyikoglu, Elif

    able to isolate key questions in energy-efficient protocol design. The scope of this paper is limited sensor networks, a good cost metric en- capsulating wireless link quality is essential to an energy-efficient metric may be and how it can be measured in an energy-efficient way. We present an experimental study

  9. How Dynamic is the Grid? Towards a Quality Metric for Grid Information Systems

    E-Print Network [OSTI]

    Sakellariou, Rizos

    How Dynamic is the Grid? Towards a Quality Metric for Grid Information Systems Laurence Field CERN rizos@cs.man.ac.uk Abstract--Grid information systems play a core role in today's production Grid. Quality metrics for Grid information systems are required in order to compare different implementations

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

    E-Print Network [OSTI]

    Dale, Lucia K.

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

  11. Deriving Coupling Metrics from Call Graphs Simon Allier, Stephane Vaucher, Bruno Dufour, and Houari Sahraoui

    E-Print Network [OSTI]

    Dufour, Bruno

    widespread dynamic features: polymorphism and dynamic class loading. This paper therefore makes the following software engineering research as well as in industrial measurement programs. The existing coupling metrics loading that are difficult to capture by static analysis. Consequently, the derived metric values might

  12. Extension of the EGS theorem to metric and Palatini f(R) gravity

    E-Print Network [OSTI]

    Valerio Faraoni

    2008-11-12

    By using the equivalence between metric and Palatini f(R) (or "modified") gravities with omega=0, -3/2 Brans-Dicke theories, it is shown that the Ehlers-Geren-Sachs theorem of general relativity is extended to modified gravity. In the case of metric f(R) gravity previously studied, this agrees with previous literature.

  13. EFW: A Cross-Layer Metric for Reliable Routing in Wireless Mesh Networks with Selfish Participants

    E-Print Network [OSTI]

    Nita-Rotaru, Cristina

    metrics have been designed assuming that each wireless mesh router participates honestly in the forwardingEFW: A Cross-Layer Metric for Reliable Routing in Wireless Mesh Networks with Selfish Participants.martignon@unibg.it Abstract--Wireless mesh networks (WMNs) have emerged as a flexible and low-cost network infrastructure

  14. Relaxational Metric Adaptation and Its Application to Semi-Supervised Clustering and Content-Based Image

    E-Print Network [OSTI]

    Yeung, Dit-Yan

    Relaxational Metric Adaptation and Its Application to Semi-Supervised Clustering and Content of Science and Technology Clear Water Bay, Kowloon, Hong Kong William K. Cheung Department of Computer it to improve the performance of content-based image retrieval systems through metric adaptation. Experimental

  15. Sharing and integration of cognitive neuroscience data: Metric and pattern matching across heterogeneous ERP datasets

    E-Print Network [OSTI]

    Dou, Dejing

    heterogeneous ERP datasets Haishan Liu a,n , Gwen Frishkoff b , Robert Frank c , Dejing Dou a a Department in the sharing and integration of data from electrophysiological (ERP) studies of human brain function. The first challenge, ERP metric matching, is to identify correspondences among distinct summary features (``metrics

  16. Time-dependent kinetic energy metrics for Lagrangians of electromagnetic type

    E-Print Network [OSTI]

    W. Sarlet; G. Prince; T. Mestdag; O. Krupkova

    2011-12-01

    We extend the results obtained in a previous paper about a class of Lagrangian systems which admit alternative kinetic energy metrics to second-order mechanical systems with explicit time-dependence. The main results are that a time-dependent alternative metric will have constant eigenvalues, and will give rise to a time-dependent coordinate transformation which partially decouples the system.

  17. Dirac Cone Metric and the Origin of the Spin Connections in Monolayer Graphene

    E-Print Network [OSTI]

    Bo Yang

    2015-06-11

    We show that the modulation of the hopping amplitudes in the honeycomb lattice of the monolayer graphene uniquely defines a metric which corresponds to the shape of the Dirac cone. The spin connection of this effective metric field can be obtained from the microscopic tight-binding Hamiltonian exactly, completing the analogy between the sublattice pseudospin travelling in the monolayer graphene with ripples and strain fields, and the real spin $1/2$ fermion travelling in a curved space. The effective metric as seen by the sublattice pseudospin is different from the real space metric as defined by the two-dimensional manifold of the graphene monolayer. All relevant terms of the effective gauge field from the microscopic model is calculated exactly for a unimodular effective metric.

  18. Impact of Different Economic Performance Metrics on the Perceived Value of Solar Photovoltaics

    SciTech Connect (OSTI)

    Drury, E.; Denholm, P.; Margolis, R.

    2011-10-01

    Photovoltaic (PV) systems are installed by several types of market participants, ranging from residential customers to large-scale project developers and utilities. Each type of market participant frequently uses a different economic performance metric to characterize PV value because they are looking for different types of returns from a PV investment. This report finds that different economic performance metrics frequently show different price thresholds for when a PV investment becomes profitable or attractive. Several project parameters, such as financing terms, can have a significant impact on some metrics [e.g., internal rate of return (IRR), net present value (NPV), and benefit-to-cost (B/C) ratio] while having a minimal impact on other metrics (e.g., simple payback time). As such, the choice of economic performance metric by different customer types can significantly shape each customer's perception of PV investment value and ultimately their adoption decision.

  19. Enhanced Accident Tolerant LWR Fuels National Metrics Workshop Report

    SciTech Connect (OSTI)

    Lori Braase

    2013-01-01

    The U.S. Department of Energy Office of Nuclear Energy (DOE-NE), in collaboration with the nuclear industry, has been conducting research and development (R&D) activities on advanced Light Water Reactor (LWR) fuels for the last few years. The emphasis for these activities was on improving the fuel performance in terms of increased burnup for waste minimization and increased power density for power upgrades, as well as collaborating with industry on fuel reliability. After the events at the Fukushima Nuclear Power Plant in Japan in March 2011, enhancing the accident tolerance of LWRs became a topic of serious discussion. In the Consolidated Appropriations Act, 2012, Conference Report 112-75, the U.S. Congress directed DOE-NE to: • Give “priority to developing enhanced fuels and cladding for light water reactors to improve safety in the event of accidents in the reactor or spent fuel pools.” • Give “special technical emphasis and funding priority…to activities aimed at the development and near-term qualification of meltdown-resistant, accident-tolerant nuclear fuels that would enhance the safety of present and future generations of light water reactors.” • Report “to the Committee, within 90 days of enactment of this act, on its plan for development of meltdown-resistant fuels leading to reactor testing and utilization by 2020.” Fuels with enhanced accident tolerance are those that, in comparison with the standard UO2-zirconium alloy system currently used by the nuclear industry, can tolerate loss of active cooling in the reactor core for a considerably longer time period (depending on the LWR system and accident scenario) while maintaining or improving the fuel performance during normal operations, and operational transients, as well as design-basis and beyond design-basis events. The overall draft strategy for development and demonstration is comprised of three phases: Feasibility Assessment and Down-selection; Development and Qualification; and Commercialization. The activities performed during the feasibility assessment phase include laboratory scale experiments; fuel performance code updates; and analytical assessment of economic, operational, safety, fuel cycle, and environmental impacts of the new concepts. The development and qualification stage will consist of fuel fabrication and large scale irradiation and safety basis testing, leading to qualification and ultimate NRC licensing of the new fuel. The commercialization phase initiates technology transfer to industry for implementation. Attributes for fuels with enhanced accident tolerance include improved reaction kinetics with steam and slower hydrogen generation rate, while maintaining acceptable cladding thermo-mechanical properties; fuel thermo-mechanical properties; fuel-clad interactions; and fission-product behavior. These attributes provide a qualitative guidance for parameters that must be considered in the development of fuels and cladding with enhanced accident tolerance. However, quantitative metrics must be developed for these attributes. To initiate the quantitative metrics development, a Light Water Reactor Enhanced Accident Tolerant Fuels Metrics Development Workshop was held October 10-11, 2012, in Germantown, Maryland. This document summarizes the structure and outcome of the two-day workshop. Questions regarding the content can be directed to Lori Braase, 208-526-7763, lori.braase@inl.gov.

  20. Sensitivity of Multi-gas Climate Policy to Emission Metrics

    SciTech Connect (OSTI)

    Smith, Steven J.; Karas, Joseph F.; Edmonds, James A.; Eom, Jiyong; Mizrahi, Andrew H.

    2013-04-01

    Multi-gas greenhouse emission targets require that different emissions be combined into an aggregate total. The Global Warming Potential (GWP) index is currently used for this purpose, despite various criticisms of the underlying concept. It is not possible to uniquely define a single metric that perfectly captures the different impacts of emissions of substances with widely disparate atmospheric lifetimes, which leads to a wide range of possible index values. We examine the sensitivity of emissions and climate outcomes to the value of the index used to aggregate methane emissions using a technologically detailed integrated assessment model. We find that the sensitivity to index value is of order 4-14% in terms of methane emissions and 2% in terms of total radiative forcing, using index values between 4 and 70 for methane, with larger regional differences in some cases. The sensitivity to index value is much higher in economic terms, with total 2-gas mitigation cost decreasing 4-5% for a lower index and increasing 10-13% for a larger index, with even larger changes if the emissions reduction targets are small. The sensitivity to index value also depends on the assumed maximum amount of mitigation available in each sector. Evaluation of the maximum mitigation potential for major sources of non-CO2 greenhouse gases would greatly aid analysis

  1. On the Computation of an Upper Bound on the Gap Metric for a Class of Nonlinear Systems

    E-Print Network [OSTI]

    Marquez, Horacio J.

    1 On the Computation of an Upper Bound on the Gap Metric for a Class of Nonlinear Systems Vahid method and a previous method that is based on the direct computation. Index Terms-- Nonlinear systems in the gap metric. The computation of the gap metric for LTI system was developed by T. T. Georgiou [4

  2. A Metric Taxonomy for Supervisory Control of Unmanned Vehicles M.L. Cummings, Patricia Pina, Jacob W. Crandall

    E-Print Network [OSTI]

    Cummings, Mary "Missy"

    1 A Metric Taxonomy for Supervisory Control of Unmanned Vehicles M.L. Cummings, Patricia Pina-system performance as well. To this end, this paper will describe a supervisory control metric taxonomy this taxonomy can be used to identify a robust set of metrics. I. Introduction The DoD's strategic roadmap

  3. The use of process metrics to evaluate product development projects

    E-Print Network [OSTI]

    Kellam, Benjamin A. (Benjamin Alexander), 1972-

    2004-01-01

    Product development success is an important strategic factor in today's business environment. The ability to accurately predict the outcome of product development projects would be a useful strategic tool. This research ...

  4. On spherically symmetric metric satisfying the positive kinetic energy coordinate condition

    E-Print Network [OSTI]

    T. Mei

    2008-02-28

    Generally speaking, there is a negative kinetic energy term in the Lagrangian of the Einstein-Hilbert action of general relativity; On the other hand, the negative kinetic energy term can be vanished by designating a special coordinate system. For general spherically symmetric metric, the question that seeking special coordinate system that satisfies the positive kinetic energy coordinate condition is referred to solving a linear first-order partial differential equation. And then, we present a metric corresponding to the Reissner-Nordstrom solution that satisfies the positive kinetic energy coordinate condition. Finally, we discuss simply the case of the Tolman metric.

  5. The behaviour of rods and clocks in general relativity, and the meaning of the metric field

    E-Print Network [OSTI]

    Harvey R Brown

    2009-11-23

    The notion that the metric field in general relativity can be understood as a property of space-time rests on a feature of the theory sometimes called universal coupling -- the claim that rods and clocks "measure" the metric in a way that is independent of their constitution. It is pointed out that this feature is not strictly a consequence of the central dynamical tenets of the theory, and argued that the metric field would better be regarded as a (possibly emergent) field in space-time, rather than as the very fabric of space-time itself.

  6. Harmonicity of unit vector fields with respect to a class of Riemannian metrics

    E-Print Network [OSTI]

    A. Baghban; E. Abedi

    2014-12-07

    The isotropic almost complex structures induce a Riemannian metric $g_{\\delta,\\sigma}$ on TM, which are the generalized type of Sasakian metric. In this paper, the Levi-Civita connection of $g_{\\delta,\\sigma}$ is calculated and the harmonicity of unit vector fields from $(M, g)$ to $(S(M), i*g_{\\delta,0})$ is investigated, where $i*g_{\\delta,0}$ is a particular type of induced metric $i*g_{\\delta,\\sigma}$. Finally, an important example is presented which satisfies in main theorem of the paper.

  7. A space-time characterization of the Kerr-Newman metric

    E-Print Network [OSTI]

    Willie Wai-Yeung Wong

    2009-01-30

    In the present paper, the characterization of the Kerr metric found by Marc Mars is extended to the Kerr-Newman family. A simultaneous alignment of the Maxwell field, the Ernst two-form of the pseudo-stationary Killing vector field, and the Weyl curvature of the metric is shown to imply that the space-time is locally isometric to domains in the Kerr-Newman metric. The paper also presents an extension of Ionescu and Klainerman's null tetrad formalism to explicitly include Ricci curvature terms.

  8. Renormalization group flow and parallel transport with non-metric compatible connections

    E-Print Network [OSTI]

    Brian P. Dolan; Alex Lewis

    1999-04-16

    A family of connections on the space of couplings for a renormalizable field theory is defined. The connections are obtained from a Levi-Civita connection, for a metric which is a generalisation of the Zamolodchikov metric in two dimensions, by adding a family of tensors which are solutions of the renormalization group equation for the operator product expansion co-efficients. The connections are torsion free, but not metric compatible in general. The renormalization group flows of N=2 supersymmetric Yang-Mills theory in four dimensions and the O(N)-model in three dimensions, in the large $N$ limit, are analysed in terms of parallel transport under these connections.

  9. SECURITY METRICS: MEASUREMENTS TO SUPPORT THE CONTINUED DEVELOPMENT OF INFORMATION SECURITY TECHNOLOGY

    E-Print Network [OSTI]

    SECURITY METRICS: MEASUREMENTS TO SUPPORT THE CONTINUED DEVELOPMENT OF INFORMATION SECURITY TECHNOLOGY Shirley Radack, Editor Computer Security Division Information Technology Laboratory National and to protect their systems and information from security threats and risks. There have been many past efforts

  10. Greenhouse Gas Return on Investment: A New Metric for Energy Technology

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Dornfeld, David; Horne, Steve

    2008-01-01

    CarbonPlanet, 2007, Greenhouse Gas Emissions by Country,In this discussion of greenhouse gas emissions and energyGreenhouse Gas Return on Investment: A New Metric for Energy

  11. Metrics for Evaluating Survivability in Dynamic Multi-Attribute Tradespace Exploration

    E-Print Network [OSTI]

    Hastings, Daniel E.

    Survivability engineering is critical for minimizing the impact of disturbances to the operation of space systems. To improve the evaluation of survivability during conceptual design, metrics are proposed for the assessment ...

  12. Effective Levi-Civita Dilaton theory from Metric Affine Dilaton Gravity

    E-Print Network [OSTI]

    R. Scipioni

    1999-05-25

    We show how a Metric Affine theory of Dilaton gravity can be reduced to an effective Riemannian Dilaton gravity model. A simple generalization of the Obukhov-Tucker-Wang theorem to Dilaton gravity is then presented.

  13. Self-dual metrics on toric 4-manifolds: extending the Joyce construction 

    E-Print Network [OSTI]

    Griffiths, Hugh Norman

    2009-01-01

    Toric geometry studies manifolds M2n acted on effectively by a torus of half their dimension, Tn. Joyce shows that for such a 4-manifold sufficient conditions for a conformal class of metrics on the free part of the ...

  14. Evaluation of transient agility metrics through unmanned simulation of the X-31 post-stall aircraft 

    E-Print Network [OSTI]

    Fischer, Shiloh Douglas

    1996-01-01

    for each axis of agility tests, and the performance improvements due to thrust vectoring are highlighted. The power loss rate and onset rate axial agility metrics are acceptable descriptors of an aircraft's ability to rapidly transition between energy...

  15. Optimization of Geoscience Laser Altimeter System waveform metrics to support vegetation measurements

    E-Print Network [OSTI]

    Lefsky, Michael

    Optimization of Geoscience Laser Altimeter System waveform metrics to support vegetation GLAS Optimization Remote sensing Vegetation structure The Geoscience Laser Altimeter System (GLAS) has optimized a noise coefficient which could be constant or vary according to observation period or noise

  16. SPECIFICATION AND IMPLEMENTATION OF IFC BASED PERFORMANCE METRICS TO SUPPORT BUILDING LIFE CYCLE ASSESSMENT OF HYBRID

    E-Print Network [OSTI]

    of a performance metrics programming hierarchy is displayed for a heat pump and a solar array. Utilising the sets ASSESSMENT OF HYBRID ENERGY SYSTEMS Elmer Morrissey1 & 2 , James O'Donnell1 & 2 , Marcus Keane1 and Vladimir

  17. Automated perfusion-weighted MRI metrics via localized arterial input functions

    E-Print Network [OSTI]

    Lorenz, Cory, 1981-

    2004-01-01

    This thesis describes and validates a new method for calculating perfusion-weighted MRI (PWI) metrics, a non-invasive technique for calculating cerebral blood flow by tracking a bolus of contrast agent. Past methods to do ...

  18. Risk Measures Constituting Risk Metrics for Decision Making in the Chemical Process Industry 

    E-Print Network [OSTI]

    Prem, Katherine

    2012-02-14

    monetization. Predicting incidents as leading metrics is pivotal to improving plant processes and, for individual and societal safety in the vicinity of the plant (portfolio). From this study it can be concluded that the comprehensive judgments of all the risks...

  19. Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and...

    Office of Scientific and Technical Information (OSTI)

    Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and Conformal Quantum Mechanics Dosch, Hans Gunter; U. Heidelberg, ITP; Brodsky, Stanley J.; SLAC; de Teramond, Guy F.;...

  20. FY 2014 Q3 RCA CAP Performance Metrics Report 2014-09-05.xlsx

    Energy Savers [EERE]

    no later than CD-3. ContractProject Management Performance Metrics FY12-FY14: 52 completions through 3rd Qtr. CD-4: Critical Decision-4, Approve Start of OperationsProject...

  1. Gravitational Analog of Faraday's Law via Torsion and a Metric with an Antisymmetric Part

    E-Print Network [OSTI]

    Philip D. Mannheim; J. J. Poveromo

    2014-08-25

    In this paper we show that in the presence of torsion and a metric with an antisymmetric part one can construct a gravitational analog of Faraday's law of electromagnetism.

  2. Sing a new song: English and Scottish metrical psalmody from 1549?1640 

    E-Print Network [OSTI]

    Duguid, Timothy Charles

    2011-11-23

    The Book of Psalms has occupied a privileged place in Christianity from its earliest years, but it was not until the sixteenth century that metrical versifications of the Psalms became popular. Because of the notable ...

  3. Asymptotic behavior of complete Ricci-flat metrics on open manifolds

    E-Print Network [OSTI]

    Santoro, Bianca

    2006-01-01

    In this thesis, we describe the asymptotic behavior of complete Ricci-flat Kihler metrics on open manifolds that can be compactified by adding a smooth, ample divisor. This result provides an answer to a question addressed ...

  4. Parameter-space metric for all-sky semicoherent searches for gravitational-wave pulsars

    E-Print Network [OSTI]

    Wette, Karl

    2015-01-01

    The sensitivity of all-sky searches for gravitational-wave pulsars is primarily limited by the finite availability of computing resources. Semicoherent searches are a widely-used method of maximizing sensitivity to gravitational-wave pulsars at fixed computing cost: the data from a gravitational-wave detector are partitioned into a number of segments, each segment is coherently analyzed, and the analysis results from each segment are summed together. The generation of template banks for the coherent analysis of each segment, and for the summation, requires knowledge of the metrics associated with the coherent and semicoherent parameter spaces respectively. We present a useful approximation to the semicoherent parameter-space metric, analogous to that presented in Wette and Prix [Phys. Rev. D 88, 123005 (2013)] for the coherent metric. The new semicoherent metric is compared to previous work in Pletsch [Phys. Rev. D 82, 042002 (2010)], and Brady and Creighton [Phys. Rev. D 61, 082001 (2000)]. We find that semi...

  5. Metrics For Evaluation of Behavior-Based Robotic Systems Amol Dattatraya Mali

    E-Print Network [OSTI]

    Mali, Amol D.

    Metrics For Evaluation of Behavior-Based Robotic Systems Amol Dattatraya Mali Dept. of computer science and engg. Arizona state university, Tempe, AZ 85287-5406, USA amol.mali@asu.edu Amitabha Mukerjee

  6. Analyzing an Adaptive Reputation Metric for Anonymity University of Illinois at

    E-Print Network [OSTI]

    Caesar, Matthew

    at Urbana-Champaign Department of Electrical and Computer Engineering nikita@illinois.edu Matthew Caesar a proportional-integral-derivative (PID) controller-based reputation metric that ensures mali- cious relays

  7. DOE to Remove 200 Metric Tons of Highly Enriched Uranium from...

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

    Administration (NNSA) will remove up to 200 metric tons (MT) of Highly Enriched Uranium (HEU), in the coming decades, from further use as fissile material in U.S. nuclear...

  8. Constructing metric gravity's N-body non-linear Lagrangian from iterative, linear algebraic scaling equations

    E-Print Network [OSTI]

    Nordtvedt, Kenneth

    2015-01-01

    A method for constructing metric gravity's N-body Lagrangian is developed which uses iterative, liner algebraic euqations which enforce invariance properties of gravity --- exterior effacement, interior effacement, and the time dilation and Lorentz contraction of matter under boosts. The method is demonstrated by obtaining the full 1/c^4 order Lagrangian, and a combination of exterior and interior effacement enforcement permits construction of the full Schwarzschild temporal and spatial metric potentials.

  9. EDDY CURRENT INVERSION AND ESTIMATION METRICS FOR EVALUATING THERMAL BARRIER COATINGS

    SciTech Connect (OSTI)

    Sabbagh, Harold A.; Murphy, R. Kim; Sabbagh, Elias H. [Victor Technologies LLC, Bloomington, IN 47401 (United States); Knopp, Jeremy S. [Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 (United States); Aldrin, John C. [Computational Tools, Gurnee, IL 60031 (United States); Nyenhuis, John [Dept. of Electric Computer Engineering, Purdue University, West Lafayette, IN (United States)

    2010-02-22

    In this paper, sophisticated eddy-current techniques incorporating model-based inverse methods were successfully demonstrated to measure the thickness and remaining-life of high-temperature coatings. To further assure the performance of these inverse methods, several estimation metrics including Fisher Information, Cramer-Rao Lower Bound (CRLB), covariance, and singular value decomposition (SVD) are introduced. The connections and utility of these metrics are illustrated in the design of eddy current methods for estimating layer thickness, conductivity and probe liftoff.

  10. Implementing the Data Center Energy Productivity Metric in a High Performance Computing Data Center

    SciTech Connect (OSTI)

    Sego, Landon H.; Marquez, Andres; Rawson, Andrew; Cader, Tahir; Fox, Kevin M.; Gustafson, William I.; Mundy, Christopher J.

    2013-06-30

    As data centers proliferate in size and number, the improvement of their energy efficiency and productivity has become an economic and environmental imperative. Making these improvements requires metrics that are robust, interpretable, and practical. We discuss the properties of a number of the proposed metrics of energy efficiency and productivity. In particular, we focus on the Data Center Energy Productivity (DCeP) metric, which is the ratio of useful work produced by the data center to the energy consumed performing that work. We describe our approach for using DCeP as the principal outcome of a designed experiment using a highly instrumented, high-performance computing data center. We found that DCeP was successful in clearly distinguishing different operational states in the data center, thereby validating its utility as a metric for identifying configurations of hardware and software that would improve energy productivity. We also discuss some of the challenges and benefits associated with implementing the DCeP metric, and we examine the efficacy of the metric in making comparisons within a data center and between data centers.

  11. Toward Understanding the Behavior of BGP During Large-Scale Power Outages

    E-Print Network [OSTI]

    Lowd, Daniel

    BGP metrics remained stable during the blackout event; importantly, we do not find an increase introduce per-prefix AS-path graphs and study their evolution for affected prefixes during the blackout; we specific events; in particular, we choose the East Coast blackout of August 2003. Our objective

  12. Kaehler Algebra: Idempotents for Solutions with Symmetry in Metric Spaces

    E-Print Network [OSTI]

    Jose G. Vargas

    2014-12-10

    With his Clifford algebra of differential forms, Kaehler's algebra addresses the overlooked manifestation of symmetry in the solutions of exterior systems. In this algebra, solutions with a given symmetry are members of left ideals generated by corresponding idempotents. These combine with phase factors to take care of all the dependence of the solution on $x^{i}$ and $% dx^{i}$ for each $\\partial /\\partial x^{i}=0$ symmetry. The maximum number of idempotents (each for a one-parameter group) that can, therefore, go into a solution is the dimensionality $n$ of the space. This number is further limited by non-commutativity of idempotents. We consider the tensor product of Kaehler algebra with tangent Clifford algebra, i.e. of valuedness. It has a commutative subalgebra of "mirror elements", i.e. where the valuedness is dual to the differential form (like in $dx\\mathbf{i}$, but not in $dx\\mathbf{j}$). It removes the aforementioned limitation in the number of idempotent factors that can simultaneously go into a solution. In the Kaehler calculus, which is based on the Kaehler algebra, total angular momentum is linear in its components, even it is not valued in tangent algebra. In particular, it is not a vector operator. We carry Kaehler's treatment over to the aforementioned commutative algebra. Non-commutativity thus ceases to be a limiting factor in the formation of products of idempotents representing each a one-parameter symmetry. The interplay of factors that emerges in the expanded set of such products is inimical to operator theory. For practical reasons, we stop at products involving three one-parameter idempotents ---henceforth call ternary--- even though the dimensionality of the all important spacetime manifold allows for four of them.

  13. Self-organized manifold learning and heuristic charting via adaptive metrics

    E-Print Network [OSTI]

    Horvath, Denis; Brutovsky, Branislav

    2014-01-01

    Classical metric and non-metric multidimensional scaling (MDS) variants are widely known manifold learning (ML) methods which enable construction of low dimensional representation (projections) of high dimensional data inputs. However, their use is crucially limited to the cases when data are inherently reducible to low dimensionality. In general, drawbacks and limitations of these, as well as pure, MDS variants become more apparent when the exploration (learning) is exposed to the structured data of high intrinsic dimension. As we demonstrate on artificial and real-world datasets, the over-determination problem can be solved by means of the hybrid and multi-component discrete-continuous multi-modal optimization heuristics. Its remarkable feature is, that projections onto 2D are constructed simultaneously with the data categorization (classification) compensating in part for the loss of original input information. We observed, that the optimization module integrated with ML modeling, metric learning and categ...

  14. Graphene and the Zermelo Optical Metric of the BTZ Black Hole

    E-Print Network [OSTI]

    M. Cvetic; G. W. Gibbons

    2012-05-23

    It is well known that the low energy electron excitations of the curved graphene sheet $\\Sigma$ are solutions of the massless Dirac equation on a 2+1 dimensional ultra-static metric on ${\\Bbb R} \\times \\Sigma$. An externally applied electric field on the graphene sheet induces a gauge potential which could be mimicked by considering a stationary optical metric of the Zermelo form, which is conformal to the BTZ black hole when the sheet has a constant negative curvature. The Randers form of the metric can model a magnetic field, which is related by a boost to an electric one in the Zermelo frame. We also show that there is fundamental geometric obstacle to obtaining a model that extends all the way to the black hole horizon.

  15. MATHEMATICS OF COMPUTATION, VOLUME 27, NUMBER 124, OCTOBER 1973 Self-Scaling Variable Metric Algorithms Without Line

    E-Print Network [OSTI]

    Oren, Shmuel S.

    MATHEMATICS OF COMPUTATION, VOLUME 27, NUMBER 124, OCTOBER 1973 Self-Scaling Variable Metric Mathematical Society 873 #12;874 SHMUEL S. OREN (c) Iff is a positivedefinitequadraticfunction

  16. Measuring the U.S.-China Innovation Gap: Initial Findings of the UCSD-Tsinghua Innovation Metrics Survey Project

    E-Print Network [OSTI]

    2013-01-01

    STUDY OF INNOVATION AND TECHNOLOGY IN CHINA POLICY BRIEF STIMeasuring the U.S. -China Innovation Gap: Initial Findingsof the UCSD-Tsinghua Innovation Metrics Survey Project UC

  17. How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center Infrastructure Systems

    E-Print Network [OSTI]

    Mathew, Paul

    2009-01-01

    Outside Air Economizers In Data Center Environments. ” Whiteproductivity metrics (e.g. Data Center energy Productivity (kinds of work done in a data center and identify appropriate

  18. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    E-Print Network [OSTI]

    Eto, Joseph H.

    2011-01-01

    and energy storage. Use of Frequency Response Metrics toand energy storage. xxix Use of Frequency Response Metricsfrequency control such as demand response and energy storage.

  19. Noise Kernel for Self-similar Tolman Bondi Metric: Fluctuations on Cauchy Horizon

    E-Print Network [OSTI]

    Seema Satin; Kinjalk Lochan; Sukratu Barve

    2013-04-12

    We attempt to calculate the point separated Noise Kernel for self similar Tolman Bondi metric, using a method similar to that developed by Eftekharzadeh et. al for ultra-static spacetimes referring to the work by Page. In case of formation of a naked singularity, the Noise Kernel thus obtained is found to be regular except on the Cauchy horizon, where it diverges. The behavior of the noise in case of the formation of a covered singularity is found to be regular. This result seemingly renders back reaction non-negligible which questions the stability of the results obtained from the semiclassical treatment of the self similar Tolman Bondi metric.

  20. Hyperkahler metrics building in the 1 + 3 representation; The Taub-Nut case

    SciTech Connect (OSTI)

    El Hassouni, A.; Lhallabi, T.; Saidi, E.H. (ICTP, Trieste (IT)); Oudrhiri-Safiani, E.G. (Lab. de Physique Theorique, Av. Ibn Battota, B.P. 1014 Rabat (MA))

    1989-01-01

    In this paper, the authors construct the HST type hyperkahler N = 2 supersymmetric nonlinear {sigma} model. The authors show that for 4n dimensional hyperkahler manifolds, one needs in general n(n + 1)/2 scalar functions to specify the metric. The n = 1 and n = 2 are studied in detail. The SU(2) {times} U(1) Taub-Nut model in the HST hypermultiplet representation is discussed as an illustrating example. The corresponding Taub-Nut metric is worked out explicitly. Some general features of these models are discussed.

  1. Tree metrics and edge-disjoint S-paths Hiroshi Hirai (U. Tokyo)

    E-Print Network [OSTI]

    Hirai, Hiroshi

    : terminal set µ : (S 2 ) Z+: terminal weight a : E Z+: edge-cost G = (V, E)S P sP tP µ(sP , tP ) Def: S is a tree metric def tree , {ps}sS V , > 0 s.t. µ(s, t) = d (ps, pt) (s, t S). ps pt pu pv d (ps, pt: approx. algorithm for "near" tree metrics Problem: µ-EDP (cost-less version of µ-C

  2. A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation

    E-Print Network [OSTI]

    Mariano Anabitarte; Mauricio Bellini

    2009-01-06

    We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations, to study the spectrums for both, the inflaton and gauge invariant (scalar) metric fluctuations in the framework of a single field inflationary model where the quasi-exponential expansion is driven by an inflation which is minimally coupled to gravity. The proposal here examined is valid also for fluctuations with large amplitude, but for cosmological scales, where vector and tensor perturbations can be neglected and the fluid is irrotacional.

  3. ORIGINAL PAPER Sustainability metrics for eco-technologies assessment, part I

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    ORIGINAL PAPER Sustainability metrics for eco-technologies assessment, part I: preliminary presents a preliminary screening of eco-technologies for dimethyl carbonate (DMC) produc- tion. Through herein referred to as eco- technologies. Casting of technologies was based on alter- natives available

  4. Image Set Classification Using Holistic Multiple Order Statistics Features and Localized Multi-Kernel Metric Learning

    E-Print Network [OSTI]

    Moulin, Pierre

    Image Set Classification Using Holistic Multiple Order Statistics Features and Localized Multi-Kernel Metric Learning Jiwen Lu1 , Gang Wang1,2 , and Pierre Moulin3 1 Advanced Digital Sciences Center viewpoints or under varying illuminations. While a number of image set classification methods have been

  5. Evaluating the Efficacy of Grasp Metrics for Utilization in a Gaussian Process-Based Grasp Predictor

    E-Print Network [OSTI]

    Balasubramanian, Ravi

    -- With the goal of advancing the state of automatic robotic grasping, we present a novel approach that combines Principal Component Analysis and Gaussian Process algorithms on the discriminative grasp metrics to build the extent to which the object is enveloped by the hand [6]. Surveys of grasping literature [7], [8], [9

  6. On Performance Metrics for Guaranteed QoS in Industrial Mobile Wireless Sensor Networks

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    , adaptation, and innovation. The ISA SP100, Wireless for Industrial Automation*, efforts in addressing1 On Performance Metrics for Guaranteed QoS in Industrial Mobile Wireless Sensor Networks Teja}@ornl.gov Wireless technology is fueling new paradigms in personal, commercial, and industrial communications systems

  7. Achieving Software Quality with Testing Coverage Measures: Metrics, Tools, and Applications

    E-Print Network [OSTI]

    Lyu, Michael R.

    Achieving Software Quality with Testing Coverage Measures: Metrics, Tools, and Applications J. R of data flow testing, describes a software testing and analysis tool called ATAC, which measures the effectiveness of testing data, and presents two case studies connecting software quality with the control

  8. Adaptive Multiple Metrics Routing Protocols for Heterogeneous Multi-Hop Wireless Networks

    E-Print Network [OSTI]

    Wang, Yu

    , energy consumption, and traffic load into the path cost calculation for ad hoc or multihop of multiple metrics for calculating path costs results in improved performance and lower overall system The calculation of path cost is a critical component of routing for multi-hop networks, including ad hoc

  9. A NEW TEST METRIC AND A NEW SCAN ARCHITECTURE FOR EFFICIENT VLSI TESTING

    E-Print Network [OSTI]

    Stanford University

    A NEW TEST METRIC AND A NEW SCAN ARCHITECTURE FOR EFFICIENT VLSI TESTING A DISSERTATION SUBMITTED. To overcome the difficulty and cost of VLSI testing, we need to search for better testing techniques. Chip testing can be classified into two categories: production testing and characterization testing

  10. A COMBINED VARIABLE METRIC -CONJUGATE GRADIENT ALGORITHM FOR A CLASS OF LARGE SCALE UNCONSTRAINED MINIMIZATION

    E-Print Network [OSTI]

    Oren, Shmuel S.

    A COMBINED VARIABLE METRIC - CONJUGATE GRADIENT ALGORITHM FOR A CLASS OF LARGE SCALE UNCONSTRAINED, California Abstract An algorithm is being presented for a special class of unconstrained minimization that is updated by the Rank One update, using gradients obtained in the preceeding steps. Two classes of problems

  11. AN ANALYSIS OF COMPLEXITY METRICS IN COMPUTER-AIDED DESIGN AT TEXAS A&M 

    E-Print Network [OSTI]

    Valverde, Lauralee Mariel

    2014-01-17

    to understand what students find difficult with regards to modeling, in order to help better teach CAD. Currently, there are a few complexity metrics found in literature such as the part volume ratio, sphere ratio or area ratio. This work will investigate...

  12. Essential Fault-Tolerance Metrics for NoC Infrastructures Cristian Grecu1

    E-Print Network [OSTI]

    Pande, Partha Pratim

    C fabrics proposed metrics that are specific to message-passing on-chip communicaton systems for evaluating with tight system performance specifications and other requirements In this paper, we provide a top-down view-tolerant scenarios. 1. Introduction Global on-chip interconnects are becoming a serious bottleneck for meeting

  13. Gauge-invariant metric fluctuations from NKK theory of gravity: de Sitter expansion

    E-Print Network [OSTI]

    Jose Edgar Madriz Aguilar; Mariano Anabitarte; Mauricio Bellini

    2005-10-20

    In this paper we study gauge-invariant metric fluctuations from a Noncompact Kaluza-Klein (NKK) theory of gravity in a de Sitter expansion. We recover the well known result $\\delta\\rho/\\rho \\simeq 2\\Phi$, obtained from the standard 4D semiclassical approach to inflation. The spectrum for these fluctuations should be dependent of the fifth (spatial-like) coordinate.

  14. TOPOLOGICAL RAMSEY SPACES AND METRICALLY BAIRE SETS NATASHA DOBRINEN AND JOSE G. MIJARES

    E-Print Network [OSTI]

    Dobrinen, Natasha

    TOPOLOGICAL RAMSEY SPACES AND METRICALLY BAIRE SETS NATASHA DOBRINEN AND JOS´E G. MIJARES Abstract. We characterize a class of topological Ramsey spaces such that each element R of the class induces a collection {Rk}kRamsey. Every projected

  15. Metrics for Measuring Progress under the Hawai`i Clean Energy Initiative

    E-Print Network [OSTI]

    2: HCEI Metric Report Prepared for the Hawai`i Energy Policy Forum Prepared by KEMA, Inc. Submitted agency thereof. #12;Hawaii Clean Energy Status Model 2013 Prepared for the Hawaii Energy Policy Forum....................................................................................................................................2-6 Renewable Generation and Energy Efficiency.................................................................

  16. High-Dimensional Similarity Searches Using A Metric Pseudo-Grid Christian Digout Mario A. Nascimento

    E-Print Network [OSTI]

    Nascimento, Mario A.

    High-Dimensional Similarity Searches Using A Metric Pseudo-Grid Christian Digout Mario A the proposal of numerous tree-based access structures for high dimensional similarity searches, tech- niques in the met- ric space, each one determining a number of hyper-rings in this space. The intersection of those

  17. Utility Sampling for Trust Metrics in PKI Dakshi Agrawal # and Charanjit Jutla #

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Utility Sampling for Trust Metrics in PKI Dakshi Agrawal # and Charanjit Jutla # IBM T. J. Watson based on ``utility sampling'', which maybe of interest for non­monetary applications as well. Keywords, or the utility of this trust, also depends on what information was authenticated. For example, if the information

  18. Metric Relativity and the Dynamical Bridge: highlights of Riemannian geometry in physics

    E-Print Network [OSTI]

    Novello, Mario

    2015-01-01

    We present an overview of recent developments concerning modifications of the geometry of space-time to describe various physical processes of interactions among classical and quantum configurations. We concentrate in two main lines of research: the Metric Relativity and the Dynamical Bridge.

  19. Metric Relativity and the Dynamical Bridge: highlights of Riemannian geometry in physics

    E-Print Network [OSTI]

    Mario Novello; Eduardo Bittencourt

    2015-08-21

    We present an overview of recent developments concerning modifications of the geometry of space-time to describe various physical processes of interactions among classical and quantum configurations. We concentrate in two main lines of research: the Metric Relativity and the Dynamical Bridge.

  20. A Non-Riemannian Metric on Space-Time Emergent From Scalar Quantum Field Theory

    E-Print Network [OSTI]

    Kar, Arnab

    2012-01-01

    We show that the standard deviation \\sigma(x,x') = \\sqrt{} of a scalar quantum field theory is a metric (i.e., a symmetric positive function satisfying the triangle inequality) on space-time (with imaginary time). It is very different from the Euclidean metric |x-x'|: for four dimensional free scalar field theory, \\sigma(x,x') \\to \\frac{\\sigma_{4}}{a^{2}} -\\frac{\\sigma_{4}'}{|x-x'|^{2}} + \\mathrm{O}(|x-x'|^{-3}), as |x-x'|\\to\\infty. According to \\sigma, space-time has a finite diameter \\frac{\\sigma_{4}}{a^{2}} which is not universal (i.e., depends on the UV cut-off a and the regularization method used). The Lipschitz equivalence class of the metric is independent of the cut-off. \\sigma(x,x') is not the length of the geodesic in any Riemannian metric, as it does not have the intermediate point property: for a pair (x,x') there is in general no point x" such that \\sigma(x,x')=\\sigma(x,x")+\\sigma(x",x'). Nevertheless, it is possible to embed space-time in a higher dimensional space of negative curvature so that ...

  1. IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION (SUBMITTED) 1 Choosing Good Distance Metrics and Local

    E-Print Network [OSTI]

    Dale, Lucia K.

    Planners for Probabilistic Roadmap Methods Nancy M. Amato, O. Burchan Bayazit, Lucia K. Dale, Christopher metrics and local planners within the context of probabilistic roadmap methods for planning the motion that better connected roadmaps will be constructed using multiple local planners. We propose a new local

  2. The Metric System A Position of the National Council of Teachers of Mathematics

    E-Print Network [OSTI]

    measurement system used in science and the predominant system used in commerce. The United States is one, they should be introduced to standard units of measure (both SI units and non-metric units of measure commonly of the quantity of the attribute measured by all who use the same system of units, and (2) reliability, ensuring

  3. Multidimensional metrics for estimating phage abundance, distribution, gene density, and sequence coverage in metagenomes

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

    Aziz, Ramy K.; Dwivedi, Bhakti; Akhter, Sajia; Breitbart, Mya; Edwards, Robert A.

    2015-05-08

    Phages are the most abundant biological entities on Earth and play major ecological roles, yet the current sequenced phage genomes do not adequately represent their diversity, and little is known about the abundance and distribution of these sequenced genomes in nature. Although the study of phage ecology has benefited tremendously from the emergence of metagenomic sequencing, a systematic survey of phage genes and genomes in various ecosystems is still lacking, and fundamental questions about phage biology, lifestyle, and ecology remain unanswered. To address these questions and improve comparative analysis of phages in different metagenomes, we screened a core set ofmore »publicly available metagenomic samples for sequences related to completely sequenced phages using the web tool, Phage Eco-Locator. We then adopted and deployed an array of mathematical and statistical metrics for a multidimensional estimation of the abundance and distribution of phage genes and genomes in various ecosystems. Experiments using those metrics individually showed their usefulness in emphasizing the pervasive, yet uneven, distribution of known phage sequences in environmental metagenomes. Using these metrics in combination allowed us to resolve phage genomes into clusters that correlated with their genotypes and taxonomic classes as well as their ecological properties. By adding this set of metrics to current metaviromic analysis pipelines, where they can provide insight regarding phage mosaicism, habitat specificity, and evolution.« less

  4. Parameter-space metric for all-sky semicoherent searches for gravitational-wave pulsars

    E-Print Network [OSTI]

    Karl Wette

    2015-10-28

    The sensitivity of all-sky searches for gravitational-wave pulsars is primarily limited by the finite availability of computing resources. Semicoherent searches are a widely-used method of maximizing sensitivity to gravitational-wave pulsars at fixed computing cost: the data from a gravitational-wave detector are partitioned into a number of segments, each segment is coherently analyzed, and the analysis results from each segment are summed together. The generation of template banks for the coherent analysis of each segment, and for the summation, requires knowledge of the metrics associated with the coherent and semicoherent parameter spaces respectively. We present a useful approximation to the semicoherent parameter-space metric, analogous to that presented in Wette and Prix [Phys. Rev. D 88, 123005 (2013)] for the coherent metric. The new semicoherent metric is compared to previous work in Pletsch [Phys. Rev. D 82, 042002 (2010)], and Brady and Creighton [Phys. Rev. D 61, 082001 (2000)]. We find that semicoherent all-sky searches require orders of magnitude more templates than previously predicted.

  5. Statistical 2D and 3D shape analysis using Non-Euclidean Metrics

    E-Print Network [OSTI]

    Richard Petersens Plads, Building 321, DK-2800 Kgs. Lyngby, Denmark {rl, kbh, proj76}@imm.dtu.dk, http For the analysis and interpretation of multivariate observations a standard meth- ods has been the application appearance models [6]. Bookstein proposed using bending energy and inverse bending energy as metrics

  6. Erice'2007 Defeng Sun 1 The Role of Metric Projectors in

    E-Print Network [OSTI]

    Sun, Defeng

    Erice'2007 Defeng Sun 1 ' & $ % The Role of Metric Projectors in Nonlinear Conic Optimization Defeng Sun Department of Mathematics National University of Singapore Republic of Singapore August 1, 2007 #12;Erice'2007 Defeng Sun 2 ' & $ % Let us consider the matrix correlation problem min 1 2 X - G 2

  7. Topic-Based Audience Metrics for Internet Marketing by Combining Ontologies and Output Page Mining

    E-Print Network [OSTI]

    Libre de Bruxelles, Université

    designers and Web de- velopers [19]. Summary reports like the number of visi- tors and the number of page metrics which should represent the Web site topics. Finally, we validate our approach with experiments by a FNRS Research Fel- low Grant. has most emerged in the corporate world. Web analytics fo- cuses

  8. Multidimensional metrics for estimating phage abundance, distribution, gene density, and sequence coverage in metagenomes

    SciTech Connect (OSTI)

    Aziz, Ramy K.; Dwivedi, Bhakti; Akhter, Sajia; Breitbart, Mya; Edwards, Robert A.

    2015-05-08

    Phages are the most abundant biological entities on Earth and play major ecological roles, yet the current sequenced phage genomes do not adequately represent their diversity, and little is known about the abundance and distribution of these sequenced genomes in nature. Although the study of phage ecology has benefited tremendously from the emergence of metagenomic sequencing, a systematic survey of phage genes and genomes in various ecosystems is still lacking, and fundamental questions about phage biology, lifestyle, and ecology remain unanswered. To address these questions and improve comparative analysis of phages in different metagenomes, we screened a core set of publicly available metagenomic samples for sequences related to completely sequenced phages using the web tool, Phage Eco-Locator. We then adopted and deployed an array of mathematical and statistical metrics for a multidimensional estimation of the abundance and distribution of phage genes and genomes in various ecosystems. Experiments using those metrics individually showed their usefulness in emphasizing the pervasive, yet uneven, distribution of known phage sequences in environmental metagenomes. Using these metrics in combination allowed us to resolve phage genomes into clusters that correlated with their genotypes and taxonomic classes as well as their ecological properties. By adding this set of metrics to current metaviromic analysis pipelines, where they can provide insight regarding phage mosaicism, habitat specificity, and evolution.

  9. Acceptability of Four Transformer Top-Oil Thermal Models: Pt. 2: Comparing Metrics

    E-Print Network [OSTI]

    1 Acceptability of Four Transformer Top-Oil Thermal Models: Pt. 2: Comparing Metrics Lida Jauregui transformer top-oil thermal models are examined vis-à-vis training with measured data. Acceptability is unacceptable for model identification purposes. The linear top-oil model is acceptable for FOFA transformers

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

    E-Print Network [OSTI]

    Yeung, Dit-Yan

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

  11. Visibility: A New Metric For Protocol Design Megan Wachs, Jung Il Choi, Jung Woo Lee, Kannan Srinivasan,

    E-Print Network [OSTI]

    Levis, Philip

    - bility metric to evaluate and compare protocols, where visi- bility is defined as the energy cost, to increase its visibility and efficiency. 1 Introduction Traditional metrics for sensornet protocol design in network protocols, in order to isolate the causes of failure and address them. If we could trace all

  12. Evaluation of SeaSonde Hardware Diagnostic Parameters as Performance Metrics Brian M. Emery and Libe Washburn

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    Evaluation of SeaSonde Hardware Diagnostic Parameters as Performance Metrics Brian M. EmerySonde software reports hardware diagnostic statistics, including a number of parameters associated the suitability of the parameters as operational metrics. The hardware parameters considered in this analysis

  13. Scalable digital CMOS comparator using a parallel prefix tree

    E-Print Network [OSTI]

    Abdel-Hafeez, S; Gordon-Ross, A; Parhami, B

    2013-01-01

    technology at 1 GHz. Index Terms— High-speed arithmetic, high-speed wide-bit comparator architecture,

  14. Enhanced Equalization in OFDM Systems Using Cyclic Prefix

    E-Print Network [OSTI]

    Quadeer, Ahmed Abdul

    high data rate in OFDM, receivers must estimate the channel efficiently and subsequently the data. Many--Orthogonal frequency division multiplexing (OFDM) is a modulation technique that provides high achievable data rates and are characterized by the same channel parameters. Conventionally, data is recovered by utilizing only the circular

  15. Orphan Prefixes and the Grammaticalization of Aspect in South Slavic

    E-Print Network [OSTI]

    Dickey, Stephen M.

    2012-01-01

    preposition iz is no longer used in the spatial meaning ‘out of.’ The most extreme case is Bulgarian po-, which no longer shares the spatial meaning of SURFACE CONTACT with the preposition po to any significant degree. Another important case is the hybrid...

  16. Cyclic Prefix Based Cooperative Sequential Spectrum Sensing Algorithms for OFDM

    E-Print Network [OSTI]

    Sharma, Vinod

    a sensitivity of -116dBm, while keeping the probability of miss detection under 0.1, using a sensing duration's (WLAN), Wireless MAN's (IEEE 802.16 WiMAX,) 3GPP Long Term Evolution (LTE), etc. Because of its

  17. A Hardware-Based Longest Prefix Matching Scheme for TCAMs

    E-Print Network [OSTI]

    Amaral, José Nelson

    Department of Electrical and Computer Engineering University of Alberta Edmonton, AB, T6G 2V4 Email: kasnavi of Alberta Edmonton, AB, T6G 2E8 Email: berube, amaral@cs.ualberta.ca Abstract-- Ternary Content Addressable to maintain required high throughputs. Internet routers forward incoming packets to their next hop

  18. Human Factors @ UB Fall 2010 Human Factors

    E-Print Network [OSTI]

    Krovi, Venkat

    . Outsourcing aviation maintenance: Hu- man factors implications, specifically for communications. C. Drury, K. Guy, C. Wenner. International Journal of Aviation Psychology, 2010, 20, 124 ­ 143. #12;2 Human Factors

  19. Development and evaluation of aperture-based complexity metrics using film and EPID measurements of static MLC openings

    SciTech Connect (OSTI)

    Götstedt, Julia; Karlsson Hauer, Anna; Bäck, Anna

    2015-07-15

    Purpose: Complexity metrics have been suggested as a complement to measurement-based quality assurance for intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT). However, these metrics have not yet been sufficiently validated. This study develops and evaluates new aperture-based complexity metrics in the context of static multileaf collimator (MLC) openings and compares them to previously published metrics. Methods: This study develops the converted aperture metric and the edge area metric. The converted aperture metric is based on small and irregular parts within the MLC opening that are quantified as measured distances between MLC leaves. The edge area metric is based on the relative size of the region around the edges defined by the MLC. Another metric suggested in this study is the circumference/area ratio. Earlier defined aperture-based complexity metrics—the modulation complexity score, the edge metric, the ratio monitor units (MU)/Gy, the aperture area, and the aperture irregularity—are compared to the newly proposed metrics. A set of small and irregular static MLC openings are created which simulate individual IMRT/VMAT control points of various complexities. These are measured with both an amorphous silicon electronic portal imaging device and EBT3 film. The differences between calculated and measured dose distributions are evaluated using a pixel-by-pixel comparison with two global dose difference criteria of 3% and 5%. The extent of the dose differences, expressed in terms of pass rate, is used as a measure of the complexity of the MLC openings and used for the evaluation of the metrics compared in this study. The different complexity scores are calculated for each created static MLC opening. The correlation between the calculated complexity scores and the extent of the dose differences (pass rate) are analyzed in scatter plots and using Pearson’s r-values. Results: The complexity scores calculated by the edge area metric, converted aperture metric, circumference/area ratio, edge metric, and MU/Gy ratio show good linear correlation to the complexity of the MLC openings, expressed as the 5% dose difference pass rate, with Pearson’s r-values of ?0.94, ?0.88, ?0.84, ?0.89, and ?0.82, respectively. The overall trends for the 3% and 5% dose difference evaluations are similar. Conclusions: New complexity metrics are developed. The calculated scores correlate to the complexity of the created static MLC openings. The complexity of the MLC opening is dependent on the penumbra region relative to the area of the opening. The aperture-based complexity metrics that combined either the distances between the MLC leaves or the MLC opening circumference with the aperture area show the best correlation with the complexity of the static MLC openings.

  20. Proc. IEEE Int. Conf. Robotics and Automation (ICRA), 1998, pp. 630637. 1 Choosing Good Distance Metrics and Local Planners for Probabilistic Roadmap

    E-Print Network [OSTI]

    Dale, Lucia K.

    Metrics and Local Planners for Probabilistic Roadmap Methods \\Lambda Nancy M. Amato, O. Burchan Bayazit of probabilis­ tic roadmap methods for motion planning. Both C­space and Workspace distance metrics and local metrics and local planners for use in motion planning methods, particularly probabilistic roadmap methods

  1. The International Safeguards Technology Base: How is the Patient Doing? An Exploration of Effective Metrics

    SciTech Connect (OSTI)

    Schanfein, Mark J; Gouveia, Fernando S

    2010-07-01

    The term “Technology Base” is commonly used but what does it mean? Is there a common understanding of the components that comprise a technology base? Does a formal process exist to assess the health of a given technology base? These are important questions the relevance of which is even more pressing given the USDOE/NNSA initiatives to strengthen the safeguards technology base through investments in research & development and human capital development. Accordingly, the authors will establish a high-level framework to define and understand what comprises a technology base. Potential goal-driven metrics to assess the health of a technology base will also be explored, such as linear demographics and resource availability, in the hope that they can be used to better understand and improve the health of the U.S. safeguards technology base. Finally, through the identification of such metrics, the authors will offer suggestions and highlight choices for addressing potential shortfalls.

  2. Cosmological implications of the new metric for an accelerating expanding, and doubly rotating Universe

    E-Print Network [OSTI]

    Evangelos Chaliasos

    2006-09-14

    We give the correct interpretation of the new metric, found lately by the author. This metric results as an exact solution of the Einstein field equations, without the cosmological constant. The new feature is the introduction, from the beginning, of two rotations attributed to the Universe. As a result also an expanding, and indeed in accelerating rate, Universe is obtained. Thus dark energy is not necessary at all. We explore some properties of this Universe in the present paper. In particular, all old properties of the Universe concerning the Hubble law remain in a modified way, implying anisotropy. Besides, we explore the validity of the Ryle-Clarke effect, which is verified, and we find the correct age of the Universe. Finally, the resulting shape of the Universe is examined, and it is found to be hypertoroidal.

  3. Energy-momentum distribution of a general plane symmetric spacetime in metric f(R) gravity

    E-Print Network [OSTI]

    Morteza Yavari

    2014-06-13

    In this paper, the exact vacuum solution of a general plane symmetric spacetime is investigated in metric f(R) gravity with the assumption of constant Ricci scalar. For this solution, we have studied the generalized Landau-Lifshitz energy-momentum complex in this theory to determine the energy distribution expressions for some specific f(R) models. Also, we show that these models satisfy the constant curvature condition.

  4. Performance metrics and life-cycle information management for building performance assurance

    SciTech Connect (OSTI)

    Hitchcock, R.J.; Piette, M.A.; Selkowitz, S.E.

    1998-06-01

    Commercial buildings account for over $85 billion per year in energy costs, which is far more energy than technically necessary. One of the primary reasons buildings do not perform as well as intended is that critical information is lost, through ineffective documentation and communication, leading to building systems that are often improperly installed and operated. A life-cycle perspective on the management of building information provides a framework for improving commercial building energy performance. This paper describes a project to develop strategies and techniques to provide decision-makers with information needed to assure the desired building performance across the complete life cycle of a building project. A key element in this effort is the development of explicit performance metrics that quantitatively represent performance objectives of interest to various building stakeholders. The paper begins with a discussion of key problems identified in current building industry practice, and ongoing work to address these problems. The paper then focuses on the concept of performance metrics and their use in improving building performance during design, commissioning, and on-going operations. The design of a Building Life-cycle Information System (BLISS) is presented. BLISS is intended to provide an information infrastructure capable of integrating a variety of building information technologies that support performance assurance. The use of performance metrics in case study building projects is explored to illustrate current best practice. The application of integrated information technology for improving current practice is discussed.

  5. The Transcription Factor Encyclopedia

    E-Print Network [OSTI]

    2012-01-01

    Transcription Factor Encyclopedia. Genome Biology 2012 13:Factor Encyclopedia. Gen- ome Biology 2012, 13:000. where ‘Biology 2012, 13:R24 http://genomebiology.com/2012/13/3/R24 SOFTWARE Open Access The Transcription Factor Encyclopedia

  6. Resilience Metrics

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

    - CIRA will utilize existing ANL capabilities in areas such as: * High performance computing * Climate modeling * Energy systems modeling * Complex adaptive systems 2...

  7. Metric Presentation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on dark matterEnergy InnovationPortal Methods andPrincetonMODERN

  8. Genome Assembly Forensics: Metrics for Assessing Assembly Correctness (Metagenomics Informatics Challenges Workshop: 10K Genomes at a Time)

    ScienceCinema (OSTI)

    Pop, Mihai [University of Maryland

    2013-01-22

    University of Maryland's Mihai Pop on "Genome Assembly Forensics: Metrics for Assessing Assembly Correctness" at the Metagenomics Informatics Challenges Workshop held at the DOE JGI on October 12-13, 2011.

  9. The existence of metrics of nonpositive curvature on the Brady-Krammer complexes for finite-type Artin groups 

    E-Print Network [OSTI]

    Choi, Woonjung

    2005-08-29

    My dissertation focuses on the existence of metrics of non-positive curvature for the simplicial complexes constructed recently by Tom Brady and Daan Krammer for the braid groups and other Artin groups of ?nite type. In particular, for each...

  10. Light Water Reactor Sustainability Program Operator Performance Metrics for Control Room Modernization: A Practical Guide for Early Design Evaluation

    SciTech Connect (OSTI)

    Ronald Boring; Roger Lew; Thomas Ulrich; Jeffrey Joe

    2014-03-01

    As control rooms are modernized with new digital systems at nuclear power plants, it is necessary to evaluate the operator performance using these systems as part of a verification and validation process. There are no standard, predefined metrics available for assessing what is satisfactory operator interaction with new systems, especially during the early design stages of a new system. This report identifies the process and metrics for evaluating human system interfaces as part of control room modernization. The report includes background information on design and evaluation, a thorough discussion of human performance measures, and a practical example of how the process and metrics have been used as part of a turbine control system upgrade during the formative stages of design. The process and metrics are geared toward generalizability to other applications and serve as a template for utilities undertaking their own control room modernization activities.

  11. Noise reduction algorithms and performance metrics for improving speech reception in noise by cochlear-implant users

    E-Print Network [OSTI]

    Goldsworthy, Raymond Lee, 1974-

    2005-01-01

    This thesis addresses the design and evaluation of algorithms to improve speech reception for cochlear-implant (CI) users in adverse listening environments. We develop and assess performance metrics for use in the algorithm ...

  12. Perfect fluid and scalar field in the Reissner-Nordstroem metric

    SciTech Connect (OSTI)

    Babichev, E. O.; Dokuchaev, V. I. Eroshenko, Yu. N.

    2011-05-15

    We describe the spherically symmetric steady-state accretion of perfect fluid in the Reissner-Nordstroem metric. We present analytic solutions for accretion of a fluid with linear equations of state and of the Chaplygin gas. We also show that under reasonable physical conditions, there is no steady-state accretion of a perfect fluid onto a Reissner-Nordstroem naked singularity. Instead, a static atmosphere of fluid is formed. We discuss a possibility of violation of the third law of black hole thermodynamics for a phantom fluid accretion.

  13. Ultrahard fluid and scalar field in the Kerr-Newman metric

    SciTech Connect (OSTI)

    Babichev, E.; Chernov, S.; Dokuchaev, V.; Eroshenko, Yu.

    2008-11-15

    An analytic solution for the accretion of ultrahard perfect fluid onto a moving Kerr-Newman black hole is found. This solution is a generalization of the previously known solution by Petrich, Shapiro, and Teukolsky for a Kerr black hole. We show that the found solution is applicable for the case of a nonextreme black hole, however it cannot describe the accretion onto an extreme black hole due to violation of the test fluid approximation. We also present a stationary solution for a massless scalar field in the metric of a Kerr-Newman naked singularity.

  14. Does a relativistic metric generalization of Newtonian gravity exist in 2+1 dimensions?

    E-Print Network [OSTI]

    J. L. Alonso; J. L. Cortes; V. Laliena

    2002-12-16

    It is shown that, contrary to previous claims, a scalar tensor theory of Brans-Dicke type provides a relativistic generalization of Newtonian gravity in 2+1 dimensions. The theory is metric and test particles follow the space-time geodesics. The static isotropic solution is studied in vacuum and in regions filled with an incompressible perfect fluid. It is shown that the solutions can be consistently matched at the matter vacuum interface, and that the Newtonian behavior is recovered in the weak field regime.

  15. Generalized Electrodynamics as a Special Case of Metric Independent Stress Theory

    E-Print Network [OSTI]

    Reuven Segev

    2014-12-13

    We use a metric invariant stress theory of continuum mechanics to formulate a simple generalization of the the basic variables of electrodynamics and Maxwell's equations to general differentiable manifolds of any dimension, thus viewing generalized electrodynamics as a special case of continuum mechanics. The basic variable is the potential, or a variation thereof, which is represented as an $r$-form in a $d$-dimensional spacetime. The stress for the case of generalized electrodynamics, is assumed to be represented by an $(d-r-1)$-form, a generalization of the Maxwell $2$-form.

  16. Comparing Resource Adequacy Metrics and Their Influence on Capacity Value: Preprint

    SciTech Connect (OSTI)

    Ibanez, E.; Milligan, M.

    2014-04-01

    Traditional probabilistic methods have been used to evaluate resource adequacy. The increasing presence of variable renewable generation in power systems presents a challenge to these methods because, unlike thermal units, variable renewable generation levels change over time because they are driven by meteorological events. Thus, capacity value calculations for these resources are often performed to simple rules of thumb. This paper follows the recommendations of the North American Electric Reliability Corporation?s Integration of Variable Generation Task Force to include variable generation in the calculation of resource adequacy and compares different reliability metrics. Examples are provided using the Western Interconnection footprint under different variable generation penetrations.

  17. Methodology, Methods, and Metrics for Testing and Evaluating Augmented Cognition Systems

    SciTech Connect (OSTI)

    Greitzer, Frank L.

    2008-09-15

    The augmented cognition research community seeks cognitive neuroscience-based solutions to improve warfighter performance by applying and managing mitigation strategies to reduce workload and improve the throughput and quality of decisions. The focus of augmented cognition mitigation research is to define, demonstrate, and exploit neuroscience and behavioral measures that support inferences about the warfighter’s cognitive state that prescribe the nature and timing of mitigation. A research challenge is to develop valid evaluation methodologies, metrics and measures to assess the impact of augmented cognition mitigations. Two considerations are external validity, which is the extent to which the results apply to operational contexts; and internal validity, which reflects the reliability of performance measures and the conclusions based on analysis of results. The scientific rigor of the research methodology employed in conducting empirical investigations largely affects the validity of the findings. External validity requirements also compel us to demonstrate operational significance of mitigations. Thus it is important to demonstrate effectiveness of mitigations under specific conditions. This chapter reviews some cognitive science and methodological considerations in designing augmented cognition research studies and associated human performance metrics and analysis methods to assess the impact of augmented cognition mitigations.

  18. Plasma metric singularities in helical devices and tearing instabilities in tokamaks

    E-Print Network [OSTI]

    Garcia de Andrade

    2007-03-02

    Plasma toroidal metric singularities in helical devices and tokamaks, giving rise to magnetic surfaces inside the plasma devices are investigated in two cases. In the first we consider the case of a rotational plasma on an helical device with circular cross-section and dissipation. In this case singularities are shown to place a Ricci scalar curvature bound on the radius of the surface where the Ricci scalar is the contraction of the constant Riemannian curvature tensor of magnetic surfaces. An upper bound on the initial magnetic field in terms of the Ricci scalar is obtained. This last bound may be useful in the engineering construction of plasma devices in laboratories. The normal poloidal drift velocity is also computed. In the second case a toroidal metric is used to show that there is a relation between singularities and the type of tearing instabilities considered in the tokamak. Besides, in this case Ricci collineations and Killing symmetries are computed.The pressure is computed by applying these constraints to the pressure equations in tokamaks.

  19. Assessing the Effects of Data Compression in Simulations Using Physically Motivated Metrics

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

    Laney, Daniel; Langer, Steven; Weber, Christopher; Lindstrom, Peter; Wegener, Al

    2014-01-01

    This paper examines whether lossy compression can be used effectively in physics simulations as a possible strategy to combat the expected data-movement bottleneck in future high performance computing architectures. We show that, for the codes and simulations we tested, compression levels of 3–5X can be applied without causing significant changes to important physical quantities. Rather than applying signal processing error metrics, we utilize physics-based metrics appropriate for each code to assess the impact of compression. We evaluate three different simulation codes: a Lagrangian shock-hydrodynamics code, an Eulerian higher-order hydrodynamics turbulence modeling code, and an Eulerian coupled laser-plasma interaction code. Wemore »compress relevant quantities after each time-step to approximate the effects of tightly coupled compression and study the compression rates to estimate memory and disk-bandwidth reduction. We find that the error characteristics of compression algorithms must be carefully considered in the context of the underlying physics being modeled.« less

  20. Self-force from reconstructed metric perturbations: numerical implementation in Schwarzschild spacetime

    E-Print Network [OSTI]

    Cesar Merlin; Abhay G. Shah

    2015-08-07

    We present a first numerical implementation of a new scheme by Pound et al. that enables the calculation of the gravitational self-force in Kerr spacetime from a reconstructed metric-perturbation in a radiation gauge. The numerical task of the metric reconstruction essentially reduces to solving the fully separable Teukolsky equation, rather than having to tackle the linearized Einstein's equations themselves. The method offers significant computational saving compared to existing methods in the Lorenz gauge, and we expect it to become a main workhorse for precision self-force calculations in the future. Here we implement the method for circular orbits on a Schwarzschild background, in order to illustrate its efficacy and accuracy. We use two independent methods for solving the Teukolsky equation, one based on a direct numerical integration, and the other on the analytical approach of Mano, Suzuki, and Takasugi. The relative accuracy of the output self-force is at least $10^{-7}$ using the first method, and at least $10^{-9}$ using the second; the two methods agree to within the error bars of the first. We comment on the relation to a related approach by Shah et al., and discuss foreseeable applications to more generic orbits in Kerr spacetime.

  1. Advanced Fuels Campaign Light Water Reactor Accident Tolerant Fuel Performance Metrics Executive Summary

    SciTech Connect (OSTI)

    Shannon Bragg-Sitton

    2014-02-01

    Research and development (R&D) activities on advanced, higher performance Light Water Reactor (LWR) fuels have been ongoing for the last few years. Following the unfortunate March 2011 events at the Fukushima Nuclear Power Plant in Japan, the R&D shifted toward enhancing the accident tolerance of LWRs. Qualitative attributes for fuels with enhanced accident tolerance, such as improved reaction kinetics with steam resulting in slower hydrogen generation rate, provide guidance for the design and development of fuels and cladding with enhanced accident tolerance. A common set of technical metrics should be established to aid in the optimization and down selection of candidate designs on a more quantitative basis. “Metrics” describe a set of technical bases by which multiple concepts can be fairly evaluated against a common baseline and against one another. This report describes a proposed technical evaluation methodology that can be applied to evaluate the ability of each concept to meet performance and safety goals relative to the current UO2 – zirconium alloy system and relative to one another. The resultant ranked evaluation can then inform concept down-selection, such that the most promising accident tolerant fuel design option(s) can continue to be developed toward qualification.

  2. Propagation of chaos, Wasserstein gradient flows and toric Kahler-Einstein metrics

    E-Print Network [OSTI]

    Robert J. Berman; Magnus Onnheim

    2015-06-09

    Motivated by a probabilistic approach to Kahler-Einstein metrics we consider a general non-equlibrium statistical mechanics model in Euclidean space consisting of the stochastic gradient flow of a given quasi-convex N particle interaction energy. We show that a deterministic macroscopic evolution equation emerges in the large N-limit of many particles. The proof uses the theory of weak gradient flows on the Wasserstein space and in particular De Georgi's notion of minimizing movements. Applied to the setting of permanental point processes at negative temperature the corresponding limiting evolution equation yields a new drift-diffusion equation, coupled to the Monge-Ampere operator, whose static solutions correspond to toric Kahler-Einstein metrics. This drift-diffusion equation is the gradient flow on the Wasserstein space of probability measures of the K-energy functional in Kahler geometry and it can be seen as a fully non-linear version of various extensively studied dissipative evolution equations and conservations laws, including the Keller-Segal equation and Burger's equation. We also obtain a real probabilistic analog of the complex geometric Yau-Tian-Donaldson conjecture in this setting. In another direction applications to singular pair interactions in 1D are given, leading to sharp convergence results. Complex geometric aspects of these results will be discussed elsewhere.

  3. Covariant Differential Identities and Conservation Laws in Metric-Torsion Theories of Gravitation. I. General Consideration

    E-Print Network [OSTI]

    Robert R. Lompay; Alexander N. Petrov

    2013-07-01

    Arbitrary diffeomorphically invariant metric-torsion theories of gravity are considered. It is assumed that Lagrangians of such theories contain derivatives of field variables (tensor densities of arbitrary ranks and weights) up to a second order only. The generalized Klein-Noether methods for constructing manifestly covariant identities and conserved quantities are developed. Manifestly covariant expressions are constructed without including auxiliary structures like a background metric. In the Riemann-Cartan space, the following \\emph{manifestly generally covariant results} are presented: (a) The complete generalized system of differential identities (the Klein-Noether identities) is obtained. (b) The generalized currents of three types depending on an arbitrary vector field displacements are constructed: they are the canonical Noether current, symmetrized Belinfante current and identically conserved Hilbert-Bergmann current. In particular, it is stated that the symmetrized Belinfante current does not depend on divergences in the Lagrangian. (c) The generalized boundary Klein theorem (third Noether theorem) is proved. (d) The construction of the generalized superpotential is presented in details, and questions related to its ambiguities are analyzed.

  4. Optical models of the big bang and non-trivial space-time metrics based on metamaterials

    E-Print Network [OSTI]

    Igor I. Smolyaninov

    2009-08-17

    Optics of metamaterials is shown to provide interesting table top models of many non-trivial space-time metrics. The range of possibilities is broader than the one allowed in classical general relativity. For example, extraordinary waves in indefinite metamaterials experience an effective metric, which is formally equivalent to the "two times physics" model in 2+2 dimensions. An optical analogue of a "big bang" event is presented during which a (2+1) Minkowski space-time is created together with large number of particles populating this space-time. Such metamaterial models enable experimental exploration of the metric phase transitions to and from the Minkowski space-time as a function of temperature and/or light frequency.

  5. Baseline Inputs for BEAMS: Data used in preparing Methodological Framework for Analysis of Building-Related Programs: The GPRA Metrics Effort, June 2004

    SciTech Connect (OSTI)

    Elliott, Douglas B.; Anderson, Dave M.; Belzer, David B.; Cort, Katherine A.; Dirks, James A.; Hostick, Donna J.

    2004-06-18

    This report contains the appendix to the PNNL report, Methodological Framework for Analysis of Buildings-Related Programs: The GPRA Metrics Effort.

  6. A Year of Radiation Measurements at the North Slope of Alaska Second Quarter 2009 ARM and Climate Change Prediction Program Metric Report

    SciTech Connect (OSTI)

    S.A. McFarlane, Y. Shi, C.N. Long

    2009-04-15

    In 2009, the Atmospheric Radiation Measurement (ARM) Program and the Climate Change Prediction Program (CCPP) have been asked to produce joint science metrics. For CCPP, the second quarter metrics are reported in Evaluation of Simulated Precipitation in CCSM3: Annual Cycle Performance Metrics at Watershed Scales. For ARM, the metrics will produce and make available new continuous time series of radiative fluxes based on one year of observations from Barrow, Alaska, during the International Polar Year and report on comparisons of observations with baseline simulations of the Community Climate System Model (CCSM).

  7. Low-complexity atlas-based prostate segmentation by combining global, regional, and local metrics

    SciTech Connect (OSTI)

    Xie, Qiuliang; Ruan, Dan, E-mail: druan@mednet.ucla.edu [The Department of Radiation Oncology, University of California Los Angeles, California 90095 (United States)] [The Department of Radiation Oncology, University of California Los Angeles, California 90095 (United States)

    2014-04-15

    Purpose: To improve the efficiency of atlas-based segmentation without compromising accuracy, and to demonstrate the validity of the proposed method on MRI-based prostate segmentation application. Methods: Accurate and efficient automatic structure segmentation is an important task in medical image processing. Atlas-based methods, as the state-of-the-art, provide good segmentation at the cost of a large number of computationally intensive nonrigid registrations, for anatomical sites/structures that are subject to deformation. In this study, the authors propose to utilize a combination of global, regional, and local metrics to improve the accuracy yet significantly reduce the number of required nonrigid registrations. The authors first perform an affine registration to minimize the global mean squared error (gMSE) to coarsely align each atlas image to the target. Subsequently, atarget-specific regional MSE (rMSE), demonstrated to be a good surrogate for dice similarity coefficient (DSC), is used to select a relevant subset from the training atlas. Only within this subset are nonrigid registrations performed between the training images and the target image, to minimize a weighted combination of gMSE and rMSE. Finally, structure labels are propagated from the selected training samples to the target via the estimated deformation fields, and label fusion is performed based on a weighted combination of rMSE and local MSE (lMSE) discrepancy, with proper total-variation-based spatial regularization. Results: The proposed method was applied to a public database of 30 prostate MR images with expert-segmented structures. The authors’ method, utilizing only eight nonrigid registrations, achieved a performance with a median/mean DSC of over 0.87/0.86, outperforming the state-of-the-art full-fledged atlas-based segmentation approach of which the median/mean DSC was 0.84/0.82 when applying to their data set. Conclusions: The proposed method requires a fixed number of nonrigid registrations, independent of atlas size, providing desirable scalability especially important for a large or growing atlas. When applied to prostate segmentation, the method achieved better performance to the state-of-the-art atlas-based approaches, with significant improvement in computation efficiency. The proposed rationale of utilizing jointly global, regional, and local metrics, based on the information characteristic and surrogate behavior for registration and fusion subtasks, can be extended naturally to similarity metrics beyond MSE, such as correlation or mutual information types.

  8. Conceptual Framework for Developing Resilience Metrics for the Electricity, Oil, and Gas Sectors in the United States

    SciTech Connect (OSTI)

    Watson, Jean-Paul; Guttromson, Ross; Silva-Monroy, Cesar; Jeffers, Robert; Jones, Katherine; Ellison, James; Rath, Charles; Gearhart, Jared; Jones, Dean; Corbet, Tom; Hanley, Charles; Walker, La Tonya

    2014-09-01

    This report has been written for the Department of Energy’s Energy Policy and Systems Analysis Office to inform their writing of the Quadrennial Energy Review in the area of energy resilience. The topics of measuring and increasing energy resilience are addressed, including definitions, means of measuring, and analytic methodologies that can be used to make decisions for policy, infrastructure planning, and operations. A risk-based framework is presented which provides a standard definition of a resilience metric. Additionally, a process is identified which explains how the metrics can be applied. Research and development is articulated that will further accelerate the resilience of energy infrastructures.

  9. Metric-Independent Measures for Supersymmetric Extended Object Theories on Curved Backgrounds

    E-Print Network [OSTI]

    Hitoshi Nishino; Subhash Rajpoot

    2014-11-14

    For Green-Schwarz superstring sigma-model on curved backgrounds, we introduce a non-metric measure $\\Phi \\equiv \\epsilon^{i j} \\epsilon^{I J} (\\partial_i \\varphi^I) (\\partial_j \\varphi^J)$ with two scalars $\\varphi^I (I = 1, 2)$ used in Two Measure Theory (TMT). As in the flat-background case, the string tension $T= (2 \\pi \\alpha ' )^{-1}$ emerges as an integration constant for the A_i-field equation. This mechanism is further generalized to supermembrane theory, and to super p-brane theory, both on general curved backgrounds. This shows the universal applications of dynamical measure of TMT to general supersymmetric extended objects on general curved backgrounds.

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

    SciTech Connect (OSTI)

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

    2011-07-07

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

  11. Method and system for assigning a confidence metric for automated determination of optic disc location

    DOE Patents [OSTI]

    Karnowski, Thomas P. (Knoxville, TN); Tobin, Jr., Kenneth W. (Harriman, TN); Muthusamy Govindasamy, Vijaya Priya (Knoxville, TN); Chaum, Edward (Memphis, TN)

    2012-07-10

    A method for assigning a confidence metric for automated determination of optic disc location that includes analyzing a retinal image and determining at least two sets of coordinates locating an optic disc in the retinal image. The sets of coordinates can be determined using first and second image analysis techniques that are different from one another. An accuracy parameter can be calculated and compared to a primary risk cut-off value. A high confidence level can be assigned to the retinal image if the accuracy parameter is less than the primary risk cut-off value and a low confidence level can be assigned to the retinal image if the accuracy parameter is greater than the primary risk cut-off value. The primary risk cut-off value being selected to represent an acceptable risk of misdiagnosis of a disease having retinal manifestations by the automated technique.

  12. MULTI-SCALE MORPHOLOGICAL ANALYSIS OF SDSS DR5 SURVEY USING THE METRIC SPACE TECHNIQUE

    SciTech Connect (OSTI)

    Wu Yongfeng; Batuski, David J.; Khalil, Andre

    2009-12-20

    Following the novel development and adaptation of the Metric Space Technique (MST), a multi-scale morphological analysis of the Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) was performed. The technique was adapted to perform a space-scale morphological analysis by filtering the galaxy point distributions with a smoothing Gaussian function, thus giving quantitative structural information on all size scales between 5 and 250 Mpc. The analysis was performed on a dozen slices of a volume of space containing many newly measured galaxies from the SDSS DR5 survey. Using the MST, observational data were compared to galaxy samples taken from N-body simulations with current best estimates of cosmological parameters and from random catalogs. By using the maximal ranking method among MST output functions, we also develop a way to quantify the overall similarity of the observed samples with the simulated samples.

  13. Quantifying Availability in SCADA Environments Using the Cyber Security Metric MFC

    SciTech Connect (OSTI)

    Aissa, Anis Ben; Rabai, Latifa Ben Arfa; Abercrombie, Robert K; Sheldon, Frederick T; Mili, Ali

    2014-01-01

    Supervisory Control and Data Acquisition (SCADA) systems are distributed networks dispersed over large geographic areas that aim to monitor and control industrial processes from remote areas and/or a centralized location. They are used in the management of critical infrastructures such as electric power generation, transmission and distribution, water and sewage, manufacturing/industrial manufacturing as well as oil and gas production. The availability of SCADA systems is tantamount to assuring safety, security and profitability. SCADA systems are the backbone of the national cyber-physical critical infrastructure. Herein, we explore the definition and quantification of an econometric measure of availability, as it applies to SCADA systems; our metric is a specialization of the generic measure of mean failure cost.

  14. A new metric of the low-mode asymmetry for ignition target designs

    SciTech Connect (OSTI)

    Gu, Jianfa, E-mail: gu-jianfa@iapcm.ac.cn; Dai, Zhensheng; Fan, Zhengfeng; Zou, Shiyang, E-mail: zou-shiyang@iapcm.ac.cn; Ye, Wenhua; Pei, Wenbing; Zhu, Shaoping [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)] [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)

    2014-01-15

    In the deuterium-tritium inertial confinement fusion implosion experiments on the National Ignition Facility, the measured neutron yield and hot spot pressure are significantly lower than simulations. Understanding the underlying physics of the deficit is essential to achieving ignition. This paper investigates the low-mode areal density asymmetry in the main fuel of ignition capsule. It is shown that the areal density asymmetry breaks up the compressed shell and significantly reduces the conversion of implosion kinetic energy to hot spot internal energy, leading to the calculated hot spot pressure and neutron yield quite close to the experimental data. This indicates that the low-mode shell areal density asymmetry can explain part of the large discrepancy between simulations and experiments. Since only using the hot spot shape term could not adequately characterize the effects of the shell areal density asymmetry on implosion performance, a new metric of the low-mode asymmetry is developed to accurately measure the probability of ignition.

  15. A maximin characterization of the escape rate of nonexpansive mappings in metrically convex spaces

    E-Print Network [OSTI]

    Gaubert, Stephane

    2010-01-01

    We establish a maximin characterization of the linear escape rate of the orbits of a nonexpansive mapping on a complete (hemi-)metric space, under a mild form of Busemann's nonpositive curvature condition (we require a distinguished family of geodesics with a common origin to satisfy a convexity inequality). This characterization, which involves horofunctions, generalizes the Collatz-Wielandt characterization of the spectral radius of a nonnegative matrix. It yields as corollaries a theorem of Kohlberg and Neyman (1981), concerning nonexpansive maps in Banach spaces, a variant of a Denjoy-Wolff type theorem of Karlsson (2001), together with a refinement of a theorem of Gunawardena and Walsh (2003), concerning order-preserving positively homogeneous self-maps of symmetric cones.

  16. Energy-Momentum Conservation Laws in Affine-Metric Gravitation Theory

    E-Print Network [OSTI]

    G. Sardanashvily

    1995-01-10

    The Lagrangian formulation of field theory does not provide any universal energy-momentum conservation law in order to analize that in gravitation theory. In Lagrangian field theory, we get different identities involving different stress energy-momentum tensors which however are not conserved, otherwise in the covariant multimomentum Hamiltonian formalism. In the framework of this formalism, we have the fundamental identity whose restriction to a constraint space can be treated the energy-momentum transformation law. This identity remains true also for gravity. Thus, the tools are at hand to investigate the energy-momentum conservation laws in gravitation theory. The key point consists in the feature of a metric gravitational field whose canonical momenta on the constraint space are equal to zero.

  17. Shock Wave Polarizations and Optical Metrics in the Born and the Born-Infeld Electrodynamics

    E-Print Network [OSTI]

    Christoph Minz; Horst-Heino von Borzeszkowski; Thoralf Chrobok; Gerold Schellstede

    2015-06-09

    We analyze the behavior of shock waves in nonlinear theories of electrodynamics. For this, by use of generalized Hadamard step functions of increasing order, the electromagnetic potential is developed in a series expansion near the shock wave front. This brings about a corresponding expansion of the respective electromagnetic field equations what allows for deriving relations that determine the jump coefficients in the expansion series of the potential. The solution of the first-order jump relations shows that, in contrast to linear Maxwell's electrodynamics, in general the propagation of shock waves in nonlinear theories is governed by optical metrics and polarization conditions describing the propagation of two differently polarized waves (leading to a possible appearance of birefringence). In detail, shock waves are analyzed in the Born and Born-Infeld theories. The obtained results are compared to those ones found in literature. New results for the polarization of the two different waves are derived.

  18. Measuring solar reflectance - Part I: Defining a metric that accurately predicts solar heat gain

    SciTech Connect (OSTI)

    Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul [Heat Island Group, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)

    2010-09-15

    Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective ''cool colored'' surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland US latitudes, this metric R{sub E891BN} can underestimate the annual peak solar heat gain of a typical roof or pavement (slope {<=} 5:12 [23 ]) by as much as 89 W m{sup -2}, and underestimate its peak surface temperature by up to 5 K. Using R{sub E891BN} to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool roof net energy savings by as much as 23%. We define clear sky air mass one global horizontal (''AM1GH'') solar reflectance R{sub g,0}, a simple and easily measured property that more accurately predicts solar heat gain. R{sub g,0} predicts the annual peak solar heat gain of a roof or pavement to within 2 W m{sup -2}, and overestimates N by no more than 3%. R{sub g,0} is well suited to rating the solar reflectances of roofs, pavements and walls. We show in Part II that R{sub g,0} can be easily and accurately measured with a pyranometer, a solar spectrophotometer or version 6 of the Solar Spectrum Reflectometer. (author)

  19. Measuring solar reflectance Part I: Defining a metric that accurately predicts solar heat gain

    SciTech Connect (OSTI)

    Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul

    2010-05-14

    Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective 'cool colored' surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland U.S. latitudes, this metric RE891BN can underestimate the annual peak solar heat gain of a typical roof or pavement (slope {le} 5:12 [23{sup o}]) by as much as 89 W m{sup -2}, and underestimate its peak surface temperature by up to 5 K. Using R{sub E891BN} to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool-roof net energy savings by as much as 23%. We define clear-sky air mass one global horizontal ('AM1GH') solar reflectance R{sub g,0}, a simple and easily measured property that more accurately predicts solar heat gain. R{sub g,0} predicts the annual peak solar heat gain of a roof or pavement to within 2 W m{sup -2}, and overestimates N by no more than 3%. R{sub g,0} is well suited to rating the solar reflectances of roofs, pavements and walls. We show in Part II that R{sub g,0} can be easily and accurately measured with a pyranometer, a solar spectrophotometer or version 6 of the Solar Spectrum Reflectometer.

  20. Advanced Fuels Campaign Light Water Reactor Accident Tolerant Fuel Performance Metrics

    SciTech Connect (OSTI)

    Brad Merrill; Melissa Teague; Robert Youngblood; Larry Ott; Kevin Robb; Michael Todosow; Chris Stanek; Mitchell Farmer; Michael Billone; Robert Montgomery; Nicholas Brown; Shannon Bragg-Sitton

    2014-02-01

    The safe, reliable and economic operation of the nation’s nuclear power reactor fleet has always been a top priority for the United States’ nuclear industry. As a result, continual improvement of technology, including advanced materials and nuclear fuels, remains central to industry’s success. Decades of research combined with continual operation have produced steady advancements in technology and yielded an extensive base of data, experience, and knowledge on light water reactor (LWR) fuel performance under both normal and accident conditions. In 2011, following the Great East Japan Earthquake, resulting tsunami, and subsequent damage to the Fukushima Daiichi nuclear power plant complex, enhancing the accident tolerance of LWRs became a topic of serious discussion. As a result of direction from the U.S. Congress, the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) initiated an Accident Tolerant Fuel (ATF) Development program. The complex multiphysics behavior of LWR nuclear fuel makes defining specific material or design improvements difficult; as such, establishing qualitative attributes is critical to guide the design and development of fuels and cladding with enhanced accident tolerance. This report summarizes a common set of technical evaluation metrics to aid in the optimization and down selection of candidate designs. As used herein, “metrics” describe a set of technical bases by which multiple concepts can be fairly evaluated against a common baseline and against one another. Furthermore, this report describes a proposed technical evaluation methodology that can be applied to assess the ability of each concept to meet performance and safety goals relative to the current UO2 – zirconium alloy system and relative to one another. The resultant ranked evaluation can then inform concept down-selection, such that the most promising accident tolerant fuel design option(s) can continue to be developed for lead test rod or lead test assembly insertion into a commercial reactor within the desired timeframe (by 2022).

  1. Semi-Metric Topology of the Human Connectome: Sensitivity and Specificity to Autism and Major Depressive Disorder

    E-Print Network [OSTI]

    Simas, Tiago; Chattopadhyay, Shayanti; Hagan, Cindy; Kundu, Prantik; Patel, Ameera; Rosemary, Holt; Floris, Dorothea; Graham, Julia; Ooi, Cinly; Tait, Roger; Spencer, Michael; Baron-Cohen, Simon; Sahakian, Barbara; Bullmore, Ed; Goodyer, Ian; Suckling, John

    2015-08-14

    -metric), where one or more alternative paths exist that have greater strength than the direct edge. The sensitivity and specificity of this method of analysis is illustrated by two case-control analyses with independent, matched groups of adolescents with autism...

  2. Test Set Reordering Using the Gate Exhaustive Test Metric Kyoung Youn Cho and Edward J. McCluskey

    E-Print Network [OSTI]

    Stanford University

    Test Set Reordering Using the Gate Exhaustive Test Metric Kyoung Youn Cho and Edward J. Mc kycho@crc.stanford.edu Abstract When a test set size is larger than desired, some patterns must be dropped. This paper presents a systematic method to reduce test set size; the method reorders a test set

  3. Abstract--We sought to better understand the physiology underlying the metrics of heart rate variability (HRV) in

    E-Print Network [OSTI]

    variability (HRV) in trauma patients without serious injury, compared to healthy laboratory controls. This work provides a valuable step towards the definition of patterns of HRV found in trauma patients that underlies metrics of heart rate variability (HRV). Respiration is a predominant determinant of HRV. Hence

  4. Basic Units of Measurement Astronomers use metric units, and in particular the cgs (centimeter-gram-second) system.

    E-Print Network [OSTI]

    Walter, Frederick M.

    Basic Units of Measurement Astronomers use metric units, and in particular the cgs (centimeter-gram-second) system. 1 Distance The basic unit of distance is the centimeter (cm). There are 100 centimeters) or millimeters (10 mm per cm). There are 2.54 cm per inch, and 1.62 km per mile. Longer distances are measured

  5. Implementation Guide - Aviation Program Performance Indicators (Metrics) for use with DOE O 440.2B, Aviation Management And Safety

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

    2002-12-10

    The Guide provides information regarding Departmental expectations on provisions of DOE 440.2B, identifies acceptable methods of implementing Aviation Program Performance Indicators (Metrics) requirements in the Order, and identifies relevant principles and practices by referencing Government and non-Government standards. Canceled by DOE G 440.2B-1A.

  6. Implementation Guide - Performance Indicators (Metrics ) for Use with DOE O 440.2B, Aviation Management and Safety

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

    2005-09-19

    The Guide provides information regarding specific provisions of DOE O 440.2B and is intended to be useful in understanding and implementing performance indicators (metrics) required by the Order. Cancels DOE G 440.2B-1. Canceled by DOE N 251.98.

  7. DEFINING A STANDARD METRIC FOR ELECTRICITY SAVINGS Jonathan Koomey*, Hashem Akbari, Carl Blumstein, Marilyn Brown, Richard Brown,

    E-Print Network [OSTI]

    Diamond, Richard

    DEFINING A STANDARD METRIC FOR ELECTRICITY SAVINGS Jonathan Koomey*, Hashem Akbari, Carl Blumstein, Bruce Nordman, Lynn Price, Joe Romm, Marc Ross, Michael Rufo, Jayant Sathaye, Lee Schipper, Stephen H Wilson, and Ernst Worrell * Project Scientist, Lawrence Berkeley National Laboratory and Consulting

  8. Recommendations for mass spectrometry data quality metrics for open access data(corollary to the Amsterdam principles)

    SciTech Connect (OSTI)

    Kingsinger, Christopher R.; Apffel, James; Baker, Mark S.; Bian, Xiaopeng; Borchers, Christoph H.; Bradshaw, Ralph A.; Brusniak, Mi-Youn; Chan, Daniel W.; Deutsch, Eric W.; Domon, Bruno; Gorman, Jeff; Grimm, Rudolf; Hancock, William S.; Hermjakob, Henning; Horn, David; Hunter, Christie; Kolar, Patrik; Kraus, Hans-Joachim; Langen, Hanno; Linding, Rune; Moritz, Robert L.; Omenn, Gilbert S.; Orlando, Ron; Pandey, Akhilesh; Ping, Peipei; Rahbar, Amir; Rivers, Robert; Seymour, Sean L.; Simpson, Richard J.; Slotta, Douglas; Smith, Richard D.; Stein, Stephen E.; Tabb, David L.; Tagle, Danilo; Yates, John R.; Rodriguez, Henry

    2011-12-01

    Policies supporting the rapid and open sharing of proteomic data are being implemented by the leading journals in the field. The proteomics community is taking steps to ensure that data are made publicly accessible and are of high quality, a challenging task that requires the development and deployment of methods for measuring and documenting data quality metrics. On September 18, 2010, the U.S. National Cancer Institute (NCI) convened the 'International Workshop on Proteomic Data Quality Metrics' in Sydney, Australia, to identify and address issues facing the development and use of such methods for open access proteomics data. The stakeholders at the workshop enumerated the key principles underlying a framework for data quality assessment in mass spectrometry data that will meet the needs of the search community, journals, funding agencies, and data repositories. Attendees discussed and agreed upon two primary needs for the wide use of quality metrics: (i)an evolving list of comprehensive quality metrics and (ii)standards accompanied by software analytics. Attendees stressed the importance of increased education and training programs to promote reliable protocols in proteomics. This workshop report explores the historic precedents, key discussions, and necessary next steps to enhance the quality of open access data. By agreement, this article is published simultaneously in Proteomics, Proteomics Clinical Applications, Journal of Proteome Research, and Molecular and Cellular Proteomics, as a public service to the research community.The peer review process was a coordinated effort conducted by a panel of referees selected by the journals.

  9. Methane Production: In the United States cattle emit about 5.5 million metric tons of methane per year into the

    E-Print Network [OSTI]

    Toohey, Darin W.

    Methane Production: In the United States cattle emit about 5.5 million metric tons of methane per year into the atmosphere. o Accounts for 20% of methane emissions from human sources. Globally cattle produce about 80 million metric tons of methane annually. o Accounts for 28% of global methane emissions

  10. Software quality metrics and their impact on embedded software Marcio F. S. Oliveira, Ricardo Miotto Redin, Luigi Carro, Lus da Cunha Lamb, Flvio Rech Wagner

    E-Print Network [OSTI]

    Wagner, Flávio Rech

    Software quality metrics and their impact on embedded software Marcio F. S. Oliveira, Ricardo systems, which raises a trade-off between software quality, measured by traditional metrics, and optimization for a specific platform. Traditional software quality concerns reuse, abstraction, coupling

  11. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    SciTech Connect (OSTI)

    Eto, Joseph H.; Undrill, John; Mackin, Peter; Daschmans, Ron; Williams, Ben; Haney, Brian; Hunt, Randall; Ellis, Jeff; Illian, Howard; Martinez, Carlos; O'Malley, Mark; Coughlin, Katie; LaCommare, Kristina Hamachi

    2010-12-20

    An interconnected electric power system is a complex system that must be operated within a safe frequency range in order to reliably maintain the instantaneous balance between generation and load. This is accomplished by ensuring that adequate resources are available to respond to expected and unexpected imbalances and restoring frequency to its scheduled value in order to ensure uninterrupted electric service to customers. Electrical systems must be flexible enough to reliably operate under a variety of"change" scenarios. System planners and operators must understand how other parts of the system change in response to the initial change, and need tools to manage such changes to ensure reliable operation within the scheduled frequency range. This report presents a systematic approach to identifying metrics that are useful for operating and planning a reliable system with increased amounts of variable renewable generation which builds on existing industry practices for frequency control after unexpected loss of a large amount of generation. The report introduces a set of metrics or tools for measuring the adequacy of frequency response within an interconnection. Based on the concept of the frequency nadir, these metrics take advantage of new information gathering and processing capabilities that system operators are developing for wide-area situational awareness. Primary frequency response is the leading metric that will be used by this report to assess the adequacy of primary frequency control reserves necessary to ensure reliable operation. It measures what is needed to arrest frequency decline (i.e., to establish frequency nadir) at a frequency higher than the highest set point for under-frequency load shedding within an interconnection. These metrics can be used to guide the reliable operation of an interconnection under changing circumstances.

  12. Methodological Framework for Analysis of Buildings-Related Programs: The GPRA Metrics Effort

    SciTech Connect (OSTI)

    Elliott, Douglas B.; Anderson, Dave M.; Belzer, David B.; Cort, Katherine A.; Dirks, James A.; Hostick, Donna J.

    2004-06-18

    The requirements of the Government Performance and Results Act (GPRA) of 1993 mandate the reporting of outcomes expected to result from programs of the Federal government. The U.S. Department of Energy’s (DOE’s) Office of Energy Efficiency and Renewable Energy (EERE) develops official metrics for its 11 major programs using its Office of Planning, Budget Formulation, and Analysis (OPBFA). OPBFA conducts an annual integrated modeling analysis to produce estimates of the energy, environmental, and financial benefits expected from EERE’s budget request. Two of EERE’s major programs include the Building Technologies Program (BT) and Office of Weatherization and Intergovernmental Program (WIP). Pacific Northwest National Laboratory (PNNL) supports the OPBFA effort by developing the program characterizations and other market information affecting these programs that is necessary to provide input to the EERE integrated modeling analysis. Throughout the report we refer to these programs as “buildings-related” programs, because the approach is not limited in application to BT or WIP. To adequately support OPBFA in the development of official GPRA metrics, PNNL communicates with the various activities and projects in BT and WIP to determine how best to characterize their activities planned for the upcoming budget request. PNNL then analyzes these projects to determine what the results of the characterizations would imply for energy markets, technology markets, and consumer behavior. This is accomplished by developing nonintegrated estimates of energy, environmental, and financial benefits (i.e., outcomes) of the technologies and practices expected to result from the budget request. These characterizations and nonintegrated modeling results are provided to OPBFA as inputs to the official benefits estimates developed for the Federal Budget. This report documents the approach and methodology used to estimate future energy, environmental, and financial benefits produced by technologies and practices supported by BT and by WIP. However, the approach is general enough for analysis of buildings-related technologies, independent of any specific program. An overview describes the GPRA process and the models used to estimate energy savings. The body of the document describes the algorithms used and the diffusion curve estimates.

  13. The MX Factor

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

    MX Factor Test films played a strategic-planning role in the debates of the late 1970s and early 1980s about where and how to deploy the MX intercontinental ballistic missile...

  14. Power Factor Improvement 

    E-Print Network [OSTI]

    Viljoen, T. A.

    1979-01-01

    and disadvantages of various locations in the electrical network are described including the cost of installation and network capacity improvement. Sizing of capacitors is also covered. Finally, some case studies involving power factor improvement are presented...

  15. Reducing Power Factor Cost

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

    Before PF 100142 0.70 or 70% After PF 100105 0.95 or 95% PB References: B.C. Hydro. Power Factor. The GEM Series. October 1989. Commonwealth Sprague Capacitor, Inc....

  16. Electromagetic proton form factors

    E-Print Network [OSTI]

    M Y Hussein

    2006-10-31

    The electromagnetic form factors are crucial to our understanding of the proton internal structure, and thus provide a strong constraint of the distributions of the charge and magnetization current within the proton. We adopted the quark-parton model for calculating and understanding the charge structure of the proton interms of the electromagnetic form factors. A remarkable agreement with the available experimental evidence is found.

  17. Optimizing Power Factor Correction 

    E-Print Network [OSTI]

    Phillips, R. K.; Burmeister, L. C.

    1986-01-01

    FACTOR CORRECTION Robert K. Phillips and Louis C. Burmeister, Mechanical Engineering, University of Kansas, Lawrence, KS The optimal investment for power factor correcting capacitors for Kansas Power and Light Company large power contract customers... consumer of electricity were made for demands of 200, 400, 800, 1,600, 3,200, and 6,400 k\\~ and monthly energy consumption periods of 100, 150, 200, 300, 400, and 500 hours for several capacitor purchase and installation costs. The results...

  18. FGF growth factor analogs

    DOE Patents [OSTI]

    Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY); Takahashi, Kazuyuki (Germantown, MD)

    2012-07-24

    The present invention provides a fibroblast growth factor heparin-binding analog of the formula: ##STR00001## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y and Z are as defined, pharmaceutical compositions, coating compositions and medical devices including the fibroblast growth factor heparin-binding analog of the foregoing formula, and methods and uses thereof.

  19. Land and Water Use, CO2 Emissions, and Worker Radiological Exposure Factors for the Nuclear Fuel Cycle

    SciTech Connect (OSTI)

    Brett W Carlsen; Brent W Dixon; Urairisa Pathanapirom; Eric Schneider; Bethany L. Smith; Timothy M. AUlt; Allen G. Croff; Steven L. Krahn

    2013-08-01

    The Department of Energy Office of Nuclear Energy’s Fuel Cycle Technologies program is preparing to evaluate several proposed nuclear fuel cycle options to help guide and prioritize Fuel Cycle Technology research and development. Metrics are being developed to assess performance against nine evaluation criteria that will be used to assess relevant impacts resulting from all phases of the fuel cycle. This report focuses on four specific environmental metrics. • land use • water use • CO2 emissions • radiological Dose to workers Impacts associated with the processes in the front-end of the nuclear fuel cycle, mining through enrichment and deconversion of DUF6 are summarized from FCRD-FCO-2012-000124, Revision 1. Impact estimates are developed within this report for the remaining phases of the nuclear fuel cycle. These phases include fuel fabrication, reactor construction and operations, fuel reprocessing, and storage, transport, and disposal of associated used fuel and radioactive wastes. Impact estimates for each of the phases of the nuclear fuel cycle are given as impact factors normalized per unit process throughput or output. These impact factors can then be re-scaled against the appropriate mass flows to provide estimates for a wide range of potential fuel cycles. A companion report, FCRD-FCO-2013-000213, applies the impact factors to estimate and provide a comparative evaluation of 40 fuel cycles under consideration relative to these four environmental metrics.

  20. Metrics for long wavelength asymmetries in inertial confinement fusion implosions on the National Ignition Facility

    SciTech Connect (OSTI)

    Kritcher, A. L.; Town, R.; Bradley, D.; Clark, D.; Spears, B.; Jones, O.; Haan, S.; Springer, P. T.; Lindl, J.; Callahan, D.; Edwards, M. J.; Landen, O. L. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808 (United States)] [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808 (United States); Scott, R. H. H. [Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire (United Kingdom)] [Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire (United Kingdom)

    2014-04-15

    We investigate yield degradation due to applied low mode P2 and P4 asymmetries in layered inertial confinement fusion implosions. This study has been performed with a large database of >600 2D simulations. We show that low mode radiation induced drive asymmetries can result in significant deviation between the core hot spot shape and the fuel ?R shape at peak compression. In addition, we show that significant residual kinetic energy at peak compression can be induced by these low mode asymmetries. We have developed a metric, which is a function of the hot spot shape, fuel ?R shape, and residual kinetic energy at peak compression, that is well correlated to yield degradation due to low mode shape perturbations. It is shown that the ?R shape and residual kinetic energy cannot, in general, be recovered by inducing counter asymmetries to make the hot core emission symmetric. In addition, we show that the yield degradation due to low mode asymmetries is well correlated to measurements of time dependent shape throughout the entire implosion, including early time shock symmetry and inflight fuel symmetry.

  1. A normative approach to designing for evolvability : methods and metrics for considering evolvability in systems engineering

    E-Print Network [OSTI]

    Fulcoly, Daniel O'Brien

    2012-01-01

    As engineering endeavors become larger, more complex, and more expensive, the advantages of evolvable design and redesign grow. Cost and complexity are not the only factors driving the need for evolvability; changes in ...

  2. Centrifugal (centripetal) and Coriolis velocities and accelerations in spaces with affine connections and metrics as models of space-time

    E-Print Network [OSTI]

    Sawa Manoff

    2003-09-09

    The notions of centrifugal (centripetal) and Coriolis velocities and accelerations are introduced and considered in spaces with affine connections and metrics used as models of space or of space-time. It is shown that these types of velocities and accelerations are generated by the relative motions between mass elements in a continuous media or of particles. The velocities and accelerations are closely related to the kinematic characteristics of the relative velocity and of the relative acceleration. The relation between the centrifugal (centripetal) velocity and the Hubble law is found. The centrifugal (centripetal) acceleration could be interpreted as gravitational acceleration as it has been done in the Einstein theory of gravitation. This fact could be used as a basis for working out of new gravitational theories in spaces with affine connections and metrics.

  3. (Quantum) Space-Time as a Statistical Geometry of Fuzzy Lumps and the Connection with Random Metric Spaces

    E-Print Network [OSTI]

    Manfred Requardt; Sisir Roy

    2001-02-13

    We develop a kind of pregeometry consisting of a web of overlapping fuzzy lumps which interact with each other. The individual lumps are understood as certain closely entangled subgraphs (cliques) in a dynamically evolving network which, in a certain approximation, can be visualized as a time-dependent random graph. This strand of ideas is merged with another one, deriving from ideas, developed some time ago by Menger et al, that is, the concept of probabilistic- or random metric spaces, representing a natural extension of the metrical continuum into a more microscopic regime. It is our general goal to find a better adapted geometric environment for the description of microphysics. In this sense one may it also view as a dynamical randomisation of the causal-set framework developed by e.g. Sorkin et al. In doing this we incorporate, as a perhaps new aspect, various concepts from fuzzy set theory.

  4. Simulation information regarding Sandia National Laboratories%3CU%2B2019%3E trinity capability improvement metric.

    SciTech Connect (OSTI)

    Agelastos, Anthony Michael; Lin, Paul T.

    2013-10-01

    Sandia National Laboratories, Los Alamos National Laboratory, and Lawrence Livermore National Laboratory each selected a representative simulation code to be used as a performance benchmark for the Trinity Capability Improvement Metric. Sandia selected SIERRA Low Mach Module: Nalu, which is a uid dynamics code that solves many variable-density, acoustically incompressible problems of interest spanning from laminar to turbulent ow regimes, since it is fairly representative of implicit codes that have been developed under ASC. The simulations for this metric were performed on the Cielo Cray XE6 platform during dedicated application time and the chosen case utilized 131,072 Cielo cores to perform a canonical turbulent open jet simulation within an approximately 9-billion-elementunstructured- hexahedral computational mesh. This report will document some of the results from these simulations as well as provide instructions to perform these simulations for comparison.

  5. RARE EARTHS1 [Data in metric tons of rare-earth oxide (REO) content unless otherwise noted

    E-Print Network [OSTI]

    ) -- -- -- -- 20 Rare-earth metals, alloy 880 867 784 679 210 Cerium compounds 2,170 2,590 2,680 2,080 1,190 Mixed (monazite or various thorium materials) -- -- 1 61 23 Rare-earth metals, alloys 636 733 1,470 1,390 6128 RARE EARTHS1 [Data in metric tons of rare-earth oxide (REO) content unless otherwise noted

  6. Multi-factor authentication

    DOE Patents [OSTI]

    Hamlet, Jason R; Pierson, Lyndon G

    2014-10-21

    Detection and deterrence of spoofing of user authentication may be achieved by including a cryptographic fingerprint unit within a hardware device for authenticating a user of the hardware device. The cryptographic fingerprint unit includes an internal physically unclonable function ("PUF") circuit disposed in or on the hardware device, which generates a PUF value. Combining logic is coupled to receive the PUF value, combines the PUF value with one or more other authentication factors to generate a multi-factor authentication value. A key generator is coupled to generate a private key and a public key based on the multi-factor authentication value while a decryptor is coupled to receive an authentication challenge posed to the hardware device and encrypted with the public key and coupled to output a response to the authentication challenge decrypted with the private key.

  7. A Characterization of Cauchy Sequences in Fuzzy Metric Spaces and Its Application to Fuzzy Fixed Point Theory

    E-Print Network [OSTI]

    Mortaza Abtahi

    2014-10-20

    We introduce the concept of fuzzy Ciric-Matkowski contractive mappings as a generalization of fuzzy Meir-Keeler type contractions. We also introduce a class $\\Psi_1$ of gauge functions $\\psi:(0,1]\\to(0,1]$ in the sense that, for any $r\\in(0,1)$, there exists $\\rho\\in(r,1)$ such that $1-r> \\tau >1-\\rho$ implies $\\psi(\\tau)\\geq 1-r$. We show that fuzzy $\\psi$-contractive mappings ($\\psi\\in\\Psi_1$) are fuzzy Ciric-Matkowski contractive mappings. Then, we present a characterization of $M$-Cauchy sequences in fuzzy metric spaces. This characterization is used to establish new fuzzy fixed point theorems. Our results include those of Mihet (Fuzzy $\\psi$-contractive mappings in non-Archimedean fuzzy metric spaces, Fuzzy Sets Syst. 159(2008) 739--744.), Wardowski (Fuzzy contractive mappings and fixed points in fuzzy metric spaces, Fuzzy Sets Syst. 222(2013) 108--114) and others. Examples are given to support the results.

  8. Breaking Pseudo-Rotational Symmetry through ${\\bf H}^2_+$ Metric Deformation in the Eckart Potential Problem

    E-Print Network [OSTI]

    Nehemias Leija-Martinez; David Edwin Alvarez-Castillo; Mariana Kirchbach

    2011-12-24

    The peculiarity of the Eckart potential problem on ${\\bf H}^2_+$ (the upper sheet of the two-sheeted two-dimensional hyperboloid), to preserve the $(2l+1)$-fold degeneracy of the states typical for the geodesic motion there, is usually explained in casting the respective Hamiltonian in terms of the Casimir invariant of an so(2,1) algebra, referred to as potential algebra. In general, there are many possible similarity transformations of the symmetry algebras of the free motions on curved surfaces towards potential algebras, which are not all necessarily unitary. In the literature, a transformation of the symmetry algebra of the geodesic motion on ${\\bf H}^2_+$ towards the potential algebra of Eckart's Hamiltonian has been constructed for the prime purpose to prove that the Eckart interaction belongs to the class of Natanzon potentials. We here take a different path and search for a transformation which connects the $(2l+1)$ dimensional representation space of the pseudo-rotational so(2,1) algebra, spanned by the rank-$l$ pseudo-spherical harmonics, to the representation space of equal dimension of the potential algebra and find a transformation of the scaling type. Our case is that in so doing one is producing a deformed isometry copy to ${\\bf H}^2_+$ such that the free motion on the copy is equivalent to a motion on ${\\bf H}^2_+$, perturbed by a $\\coth$ interaction. In this way, we link the so(2,1) potential algebra concept of the Eckart Hamiltonian to a subtle type of pseudo-rotational symmetry breaking through ${\\bf H}^2_+$ metric deformation.

  9. Fast Factoring of Integers

    E-Print Network [OSTI]

    Gordon Chalmers

    2005-09-20

    An algorithm is given to factor an integer with $N$ digits in $\\ln^m N$ steps, with $m$ approximately 4 or 5. Textbook quadratic sieve methods are exponentially slower. An improvement with the aid of an a particular function would provide a further exponential speedup.

  10. Matrix Factorization and Matrix Concentration

    E-Print Network [OSTI]

    Mackey, Lester

    2012-01-01

    PCA 3 Mixed Membership Matrix Factorization 3.15.2 Matrix concentration3.3 Mixed Membership Matrix Factorization . . . 3.4

  11. (Data in metric tons unless otherwise noted) Domestic Production and Use: Indium was not recovered from ores in the United States in 2007. Indium-containing

    E-Print Network [OSTI]

    gallium diselenide (CIGS) solar cells require approximately 50 metric tons of indium to produce 1 gigawatt of solar power. Research was underway to develop a low-cost manufacturing process for flexible CIGS solar cells that would yield high productio

  12. Deuteron Form Factor

    SciTech Connect (OSTI)

    Farrar, G.R.; Huleihel, K.; Zhang, H. (Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08855 (United States))

    1995-01-30

    We obtain the perturbative QCD (PQCD) prediction for the leading twist deuteron form factor, treated as a pair of nucleons in nonrelativistic bound state. It is [lt]10[sup [minus]3] times experiment at [ital Q][sup 2]=4 GeV[sup 2], suggesting that PQCD is not relevant to the deuteron form factor at present values of [ital Q][sup 2], or that non-nucleon (e.g., hidden color'') degrees of freedom must be included for a correct description of the deuteron. The tree-level amplitude [similar to][ital eg][sup 10] and is the sum of several 10[sup 6] Feynman diagrams, making it an interesting case study in the behavior of perturbation theory.

  13. ORIGINAL PAPER Sustainability metrics for eco-technologies assessment, Part II.

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    . Additional sustainability indexes are evaluated: material index, energy index, and ecoefficiency. The results in route i (kg) C Equipment cost (US$) Fc Correction factor H Equipment height (ft) D Equipment diameter (ft) M&S Marshall and Swift index A Heat transfer area (ft2 ) LD50 Median lethal dose M Material index

  14. Object oriented metrics for early system characterization: A CRC card based approach 1

    E-Print Network [OSTI]

    McGregor, John D.

    per thousand lines of source code, `programmer productivity' measured as the average number of persondays spent to produce thousand lines of source code, and `degree of automation' measured these estimates are made , many of the product and environment related factors are unknown. The limited

  15. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index Journal Cited Half-Life 2014 JCR Science Edition Journal: CZECHOSLOVAK MATHEMATICAL JOURNAL Mark Journal Title ISSN Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Citable Items

  16. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index Journal Cited Half-Life 2012 JCR Science Edition Journal: CZECHOSLOVAK MATHEMATICAL JOURNAL Mark Journal Title ISSN Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Citable Items

  17. MyLibrary@LANL: proximity and semi-metric networks for a collaborative and recommender web service.

    SciTech Connect (OSTI)

    Rocha, L. M. [Indiana Univ., Bloomington, IN (United States). School of Informatics and Cognitive Science Program; Simas, T. [Indiana Univ., Bloomington, IN (United States). School of Informatics and Cognitive Science Program; Rechtsteiner, A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Modeling, Algorithms, and Informatics Group (CCS-3); DiGiacomo, M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Research Library; Luce, R. E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Research Library

    2005-01-01

    We describe a network approach to building recommendation systems for a WWW service. We employ two different types of weighted graphs in our analysis and development: Proximity graphs, a type of Fuzzy Graphs based on a co-occurrence probability, and semi-metric distance graphs, which do not observe the triangle inequality of Euclidean distances. Both types of graphs are used to develop intelligent recommendation and collaboration systems for the MyLibrary@LANL web service, a user-centered front-end to the Los Alamos National Laboratory's (LANL) digital library collections and WWW resources.

  18. New Pathways and Metrics for Enhanced, Reversible Hydrogen Storage in Boron-Doped Carbon Nanospaces

    SciTech Connect (OSTI)

    Pfeifer, Peter; Wexler, Carlos; Hawthorne, M. Frederick; Lee, Mark W.; Jalistegi, Satish S.

    2014-08-14

    This project, since its start in 2007—entitled “Networks of boron-doped carbon nanopores for low-pressure reversible hydrogen storage” (2007-10) and “New pathways and metrics for enhanced, reversible hydrogen storage in boron-doped carbon nanospaces” (2010-13)—is in support of the DOE's National Hydrogen Storage Project, as part of the DOE Hydrogen and Fuel Cells Program’s comprehensive efforts to enable the widespread commercialization of hydrogen and fuel cell technologies in diverse sectors of the economy. Hydrogen storage is widely recognized as a critical enabling technology for the successful commercialization and market acceptance of hydrogen powered vehicles. Storing sufficient hydrogen on board a wide range of vehicle platforms, at energy densities comparable to gasoline, without compromising passenger or cargo space, remains an outstanding technical challenge. Of the main three thrust areas in 2007—metal hydrides, chemical hydrogen storage, and sorption-based hydrogen storage—sorption-based storage, i.e., storage of molecular hydrogen by adsorption on high-surface-area materials (carbons, metal-organic frameworks, and other porous organic networks), has emerged as the most promising path toward achieving the 2017 DOE storage targets of 0.055 kg H2/kg system (“5.5 wt%”) and 0.040 kg H2/liter system. The objective of the project is to develop high-surface-area carbon materials that are boron-doped by incorporation of boron into the carbon lattice at the outset, i.e., during the synthesis of the material. The rationale for boron-doping is the prediction that boron atoms in carbon will raise the binding energy of hydro- gen from 4-5 kJ/mol on the undoped surface to 10-14 kJ/mol on a doped surface, and accordingly the hydro- gen storage capacity of the material. The mechanism for the increase in binding energy is electron donation from H2 to electron-deficient B atoms, in the form of sp2 boron-carbon bonds. Our team is proud to have demonstrated the predicted increase in binding energy experimentally, currently at ~10 kJ/mol. The synthetic route for incorporation of boron at the outset is to create appropriately designed copoly- mers, with a boron-free and a boron-carrying monomer, followed by pyrolysis of the polymer, yielding a bo- ron-substituted carbon scaffold in which boron atoms are bonded to carbon atoms by synthesis. This is in contrast to a second route (funded by DE-FG36-08GO18142) in which first high-surface area carbon is cre- ated and doped by surface vapor deposition of boron, with incorporation of the boron into the lattice the final step of the fabrication. The challenge in the first route is to create high surface areas without compromising sp2 boron-carbon bonds. The challenge in the second route is to create sp2 boron-carbon bonds without com- promising high surface areas.

  19. Architecture of a Quantum Multicomputer Optimized for Shor's Factoring Algorithm

    E-Print Network [OSTI]

    Rodney Doyle Van Meter III

    2006-07-11

    The quantum multicomputer consists of a large number of small nodes and a qubus interconnect for creating entangled state between the nodes. The primary metric chosen is the performance of such a system on Shor's algorithm for factoring large numbers: specifically, the quantum modular exponentiation step that is the computational bottleneck. This dissertation introduces a number of optimizations for the modular exponentiation. My algorithms reduce the latency, or circuit depth, to complete the modular exponentiation of an n-bit number from O(n^3) to O(n log^2 n) or O(n^2 log n), depending on architecture. Calculations show that these algorithms are one million times and thirteen thousand times faster, when factoring a 6,000-bit number, depending on architecture. Extending to the quantum multicomputer, five different qubus interconnect topologies are considered, and two forms of carry-ripple adder are found to be the fastest for a wide range of performance parameters. The links in the quantum multicomputer are serial; parallel links would provide only very modest improvements in system reliability and performance. Two levels of the Steane [[23,1,7

  20. Development of Metric for Measuring the Impact of RD&D Funding on GTO's Geothermal Exploration Goals (Presentation)

    SciTech Connect (OSTI)

    Jenne, S.; Young, K. R.; Thorsteinsson, H.

    2013-04-01

    The Department of Energy's Geothermal Technologies Office (GTO) provides RD&D funding for geothermal exploration technologies with the goal of lowering the risks and costs of geothermal development and exploration. In 2012, NREL was tasked with developing a metric to measure the impacts of this RD&D funding on the cost and time required for exploration activities. The development of this metric included collecting cost and time data for exploration techniques, creating a baseline suite of exploration techniques to which future exploration and cost and time improvements could be compared, and developing an online tool for graphically showing potential project impacts (all available at http://en.openei.org/wiki/Gateway:Geothermal). The conference paper describes the methodology used to define the baseline exploration suite of techniques (baseline), as well as the approach that was used to create the cost and time data set that populates the baseline. The resulting product, an online tool for measuring impact, and the aggregated cost and time data are available on the Open EI website for public access (http://en.openei.org).

  1. User's Guide to Pre-Processing Data in Universal Translator 2 for the Energy Charting and Metrics Tool (ECAM)

    SciTech Connect (OSTI)

    Taasevigen, Danny J.

    2011-11-30

    This document is a user's guide for the Energy Charting and Metrics Tool to facilitate the examination of energy information from buildings, reducing the time spent analyzing trend and utility meter data. This user guide was generated to help pre-process data with the intention of utilizing the Energy Charting and Metrics (ECAM) tool to improve building operational efficiency. There are numerous occasions when the metered data that is received from the building automation system (BAS) isn't in the right format acceptable for ECAM. This includes, but isn't limited to, cases such as inconsistent time-stamps for the trends (e.g., each trend has its own time-stamp), data with holes (e.g., some time-stamps have data and others are missing data), each point in the BAS is trended and exported into an individual .csv or .txt file, the time-stamp is unrecognizable by ECAM, etc. After reading through this user guide, the user should be able to pre-process all data files and be ready to use this data in ECAM to improve their building operational efficiency.

  2. The permutation entropy rate equals the metric entropy rate for ergodic information sources and ergodic dynamical systems

    E-Print Network [OSTI]

    Jose M. Amigo; Matthew B. Kennel; Ljupco Kocarev

    2005-03-21

    Permutation entropy quantifies the diversity of possible orderings of the values a random or deterministic system can take, as Shannon entropy quantifies the diversity of values. We show that the metric and permutation entropy rates--measures of new disorder per new observed value--are equal for ergodic finite-alphabet information sources (discrete-time stationary stochastic processes). With this result, we then prove that the same holds for deterministic dynamical systems defined by ergodic maps on $n$% -dimensional intervals. This result generalizes a previous one for piecewise monotone interval maps on the real line (Bandt, Keller and Pompe, "Entropy of interval maps via permutations",\\textit{Nonlinearity} \\textbf{15}, 1595-602, (2002)), at the expense of requiring ergodicity and using a definition of permutation entropy rate differing in the order of two limits. The case of non-ergodic finite-alphabet sources is also studied and an inequality developed. Finally, the equality of permutation and metric entropy rates is extended to ergodic non-discrete information sources when entropy is replaced by differential entropy in the usual way.

  3. Noise Kernel and Stress Energy Bi-Tensor of Quantum Fields in Conformally-Optical Metrics: Schwarzschild Black Holes

    E-Print Network [OSTI]

    Nicholas G Phillips; B. L. Hu

    2002-09-17

    In Paper II [N. G. Phillips and B. L. Hu, previous abstract] we presented the details for the regularization of the noise kernel of a quantum scalar field in optical spacetimes by the modified point separation scheme, and a Gaussian approximation for the Green function. We worked out the regularized noise kernel for two examples: hot flat space and optical Schwarzschild metric. In this paper we consider noise kernels for a scalar field in the Schwarzschild black hole. Much of the work in the point separation approach is to determine how the divergent piece conformally transforms. For the Schwarzschild metric we find that the fluctuations of the stress tensor of the Hawking flux in the far field region checks with the analytic results given by Campos and Hu earlier [A. Campos and B. L. Hu, Phys. Rev. D {\\bf 58} (1998) 125021; Int. J. Theor. Phys. {\\bf 38} (1999) 1253]. We also verify Page's result [D. N. Page, Phys. Rev. {\\bf D25}, 1499 (1982)] for the stress tensor, which, though used often, still lacks a rigorous proof, as in his original work the direct use of the conformal transformation was circumvented. However, as in the optical case, we show that the Gaussian approximation applied to the Green function produces significant error in the noise kernel on the Schwarzschild horizon. As before we identify the failure as occurring at the fourth covariant derivative order.

  4. Generally covariant Fresnel equation and the emergence of the light cone structure in linear pre-metric electrodynamics

    E-Print Network [OSTI]

    Guillermo F. Rubilar; Yuri N. Obukhov; Friedrich W. Hehl

    2002-03-25

    We study the {\\em propagation of electromagnetic waves} in a spacetime devoid of a metric but equipped with a {\\em linear} electromagnetic spacetime relation $H\\sim\\chi\\cdot F$. Here $H$ is the electromagnetic excitation $({\\cal D},{\\cal H})$ and $F$ the field strength $(E,B)$, whereas $\\chi$ (36 independent components) characterizes the electromagnetic permittivity/permeability of spacetime. We derive analytically the corresponding Fresnel equation and show that it is always quartic in the wave covectors. We study the `Fresnel tensor density' ${\\cal G}^{ijkl}$ as (cubic) function of $\\chi$ and identify the leading part of $\\chi$ (20 components) as indispensable for light propagation. Upon requiring electric/magnetic reciprocity of the spacetime relation, the leading part of $\\chi$ induces the {\\em light cone} structure of spacetime (9 components), i.e., the spacetime metric up to a function. The possible existence of an Abelian {\\em axion} field (1 component of $\\chi$) and/or of a {\\em skewon} field (15 components) and their effect on light propagation is discussed in some detail. The newly introduced skewon field is expected to be T-odd and related to dissipation.

  5. Tiled QR factorization algorithms

    E-Print Network [OSTI]

    Bouwmeester, Henricus; Langou, Julien; Robert, Yves

    2011-01-01

    This work revisits existing algorithms for the QR factorization of rectangular matrices composed of p-by-q tiles, where p >= q. Within this framework, we study the critical paths and performance of algorithms such as Sameh and Kuck, Modi and Clarke, Greedy, and those found within PLASMA. Although neither Modi and Clarke nor Greedy is optimal, both are shown to be asymptotically optimal for all matrices of size p = q^2 f(q), where f is any function such that \\lim_{+\\infty} f= 0. This novel and important complexity result applies to all matrices where p and q are proportional, p = \\lambda q, with \\lambda >= 1, thereby encompassing many important situations in practice (least squares). We provide an extensive set of experiments that show the superiority of the new algorithms for tall matrices.

  6. Impact of ASTM Standard E722 update on radiation damage metrics.

    SciTech Connect (OSTI)

    DePriest, Kendall Russell

    2014-06-01

    The impact of recent changes to the ASTM Standard E722 is investigated. The methodological changes in the production of the displacement kerma factors for silicon has significant impact for some energy regions of the 1-MeV(Si) equivalent fluence response function. When evaluating the integral over all neutrons energies in various spectra important to the SNL electronics testing community, the change in the response results in an increase in the total 1-MeV(Si) equivalent fluence of 2 7%. Response functions have been produced and are available for users of both the NuGET and MCNP codes.

  7. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, T.; Heffington, W. M.

    2009-01-01

    factors and operating hours of small and medium-sized industrial plants are analyzed to classify shift-work patterns and develop energy conservation diagnostic tools. This paper discusses two types of electric load factors for each shift... The purpose of this paper is to analyze operating hours of small and medium-sized manufacturing plants in the United States and develop ranges of load factors for use as diagnostic tools for effective energy management. Load factor is defined...

  8. Why my disease is important: metrics of disease occurrence used in the introductory sections of papers in three leading general medical journals in 1993 and 2003

    E-Print Network [OSTI]

    Gouda, Hebe N.; Powles, John W.

    2011-05-23

    stream_source_info 1478-7954-9-14.pdf.txt stream_content_type text/plain stream_size 20996 Content-Encoding UTF-8 stream_name 1478-7954-9-14.pdf.txt Content-Type text/plain; charset=UTF-8 RESEARCH Open Access Why my disease... is important: metrics of disease occurrence used in the introductory sections of papers in three leading general medical journals in 1993 and 2003 Hebe N Gouda* and John W Powles Abstract Background: We assessed the metrics used in claims about disease...

  9. On use of CO{sub 2} chemiluminescence for combustion metrics in natural gas fired reciprocating engines.

    SciTech Connect (OSTI)

    Gupta, S. B.; Bihari, B.; Biruduganti, M.; Sekar, R.; Zigan, J.

    2011-01-01

    Flame chemiluminescence is widely acknowledged to be an indicator of heat release rate in premixed turbulent flames that are representative of gas turbine combustion. Though heat release rate is an important metric for evaluating combustion strategies in reciprocating engine systems, its correlation with flame chemiluminescence is not well studied. To address this gap an experimental study was carried out in a single-cylinder natural gas fired reciprocating engine that could simulate turbocharged conditions with exhaust gas recirculation. Crank angle resolved spectra (266-795 nm) of flame luminosity were measured for various operational conditions by varying the ignition timing for MBT conditions and by holding the speed at 1800 rpm and Brake Mean effective Pressure (BMEP) at 12 bar. The effect of dilution on CO*{sub 2}chemiluminescence intensities was studied, by varying the global equivalence ratio (0.6-1.0) and by varying the exhaust gas recirculation rate. It was attempted to relate the measured chemiluminescence intensities to thermodynamic metrics of importance to engine research -- in-cylinder bulk gas temperature and heat release rate (HRR) calculated from measured cylinder pressure signals. The peak of the measured CO*{sub 2} chemiluminescence intensities coincided with peak pressures within {+-}2 CAD for all test conditions. For each combustion cycle, the peaks of heat release rate, spectral intensity and temperature occurred in that sequence, well separated temporally. The peak heat release rates preceded the peak chemiluminescent emissions by 3.8-9.5 CAD, whereas the peak temperatures trailed by 5.8-15.6 CAD. Such a temporal separation precludes correlations on a crank-angle resolved basis. However, the peak cycle heat release rates and to a lesser extent the peak cycle temperatures correlated well with the chemiluminescent emission from CO*{sub 2}. Such observations point towards the potential use of flame chemiluminescence to monitor peak bulk gas temperatures as well as peak heat release rates in natural gas fired reciprocating engines.

  10. TMD theory, factorization and evolution

    E-Print Network [OSTI]

    John Collins

    2013-07-10

    The concepts and methods of factorization using transverse-momentum-dependent (TMD) parton densities and/or fragmentation functions are summarized.

  11. Filling factors and Braid group

    E-Print Network [OSTI]

    Wellington Cruz

    1998-02-25

    We extract the Braid group structure of a recently derived hierarchy scheme for the filling factors proposed by us which related the Hausdorff dimension, $h$, to statistics, $\

  12. PDB-Metrics: a Web tool for exploring the PDB contents 333 Genetics and Molecular Research 5 (2): 333-341 (2006) www.funpecrp.com.br

    E-Print Network [OSTI]

    Neshich, Goran

    2006-01-01

    that provides all the query facilities of a database management system. Key words: Protein Data Bank (PDB), PDB of chains, the number of models (for proteins resolved using nuclear magnetic resonance, NMR the best of our knowledge, PDB-Metrics has the richest repertoire of criteria for searching, browsing

  13. (Data in metric tons of lithium content unless otherwise noted) Domestic Production and Use: The only commercially active lithium mine in the United States was a brine

    E-Print Network [OSTI]

    --United States: 2008 2009 2010 2011 2012 e Production W W W W W Imports for consumption 3,160 1,890 1,960 2,850 2 production capacity. Industry analysts and the major lithium producers expected worldwide consumption94 LITHIUM (Data in metric tons of lithium content unless otherwise noted) Domestic Production

  14. Comparison of isotropic elasto-plastic models for the plastic metric tensor $C_p=F_p^T\\, F_p$

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba

    2014-10-08

    We discuss in detail existing isotropic elasto-plastic models based on 6-dimensional flow rules for the positive definite plastic metric tensor $C_p=F_p^T\\, F_p$ and highlight their properties and interconnections. We show that seemingly different models are equivalent in the isotropic case.

  15. It is often difficult to come up with metrics to describe the resiliency of a cyber system. We might feel a system is in a good

    E-Print Network [OSTI]

    compromised or disabled? A similar problem exists with power systems. To deal with this, power grid operators metrics that are useful even when the model of the system is incomplete or inaccurate · Developing more Contingency Analysis Tool for Electric Power Grids Each Account Has Access to Files with Different

  16. DOE JGI Quality Metrics; Approaches to Scaling and Improving Metagenome Assembly (Metagenomics Informatics Challenges Workshop: 10K Genomes at a Time)

    ScienceCinema (OSTI)

    Copeland, Alex [DOE JGI]; Brown, C Titus [Michigan State University

    2013-01-22

    DOE JGI's Alex Copeland on "DOE JGI Quality Metrics" and Michigan State University's C. Titus Brown on "Approaches to Scaling and Improving Metagenome Assembly" at the Metagenomics Informatics Challenges Workshop held at the DOE JGI on October 12-13, 2011.

  17. Comparison of isotropic elasto-plastic models for the plastic metric tensor $C_p=F_p^T\\, F_p$

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba

    2015-10-29

    We discuss in detail existing isotropic elasto-plastic models based on 6-dimensional flow rules for the positive definite plastic metric tensor $C_p=F_p^T\\, F_p$ and highlight their properties and interconnections. We show that seemingly different models are equivalent in the isotropic case.

  18. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index 2014 JCR Science Edition Journal: Applications of Mathematics Mark Journal Title ISSN Total- life APPL MATH-CZECH 0862-7940 241 0.400 0.430 0.024 42 8.9 >10.0 Cited Journal Citing Journal Source

  19. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index 2012 JCR Science Edition Journal: Applications of Mathematics Mark Journal Title ISSN Total- life APPL MATH-CZECH 0862-7940 240 0.222 0.549 0.054 37 7.3 >10.0 Cited Journal Citing Journal Source

  20. SU-E-T-379: Concave Approximations of Target Volume Dose Metrics for Intensity- Modulated Radiotherapy Treatment Planning

    SciTech Connect (OSTI)

    Xie, Y; Chen, Y; Wickerhauser, M; Deasy, J

    2014-06-01

    Purpose: The widely used treatment plan metric Dx (mimimum dose to the hottest x% by volume of the target volume) is simple to interpret and use, but is computationally poorly behaved (non-convex), this impedes its use in computationally efficient intensity-modulated radiotherapy (IMRT) treatment planning algorithms. We therefore searched for surrogate metrics that are concave, computationally efficient, and accurately correlated to Dx values in IMRT treatment plans. Methods: To find concave surrogates of D95—and more generally, Dx values with variable x values—we tested equations containing one or two generalized equivalent uniform dose (gEUD) functions. Fits were obtained by varying gEUD ‘a’ parameter values, as well as the linear equation coefficients. Fitting was performed using a dataset of dose-volume histograms from 498 de-identified head and neck IMRT treatment plans. Fit characteristics were tested using a crossvalidation process. Reported root-mean-square error values were averaged over the cross-validation shuffles. Results: As expected, the two-gEUD formula provided a superior fit, compared to the single-gEUD formula. The best approximation uses two gEUD terms: 16.25 x gEUD[a=0.45] – 15.30 x gEUD[a=1.75] – 0.69. The average root-mean-square error on repeated (70/30) cross validation was 0.94 Gy. In addition, a formula was found that reasonably approximates Dx for x between 80% and 96%. Conclusion: A simple concave function using two gEUD terms was found that correlates well with PTV D95s for these head and neck treatment plans. More generally, a formula was found that represents well the Dx for x values from 80% to 96%, thus providing a computationally efficient formula for use in treatment planning optimization. The formula may need to be adjusted for other institutions with different treatment planning protocols. We conclude that the strategy of replacing Dx values with gEUD-based formulas is promising.

  1. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, Tapajyoti

    2010-07-14

    Load factors are an important simplification of electrical energy use data and depend on the ratio of average demand to peak demand. Based on operating hours of a facility they serve as an important benchmarking tool for the industrial sector...

  2. Efficient Networks for Quantum Factoring

    E-Print Network [OSTI]

    David Beckman; Amalavoyal N. Chari; Srikrishna Devabhaktuni; John Preskill

    1996-02-21

    We consider how to optimize memory use and computation time in operating a quantum computer. In particular, we estimate the number of memory qubits and the number of operations required to perform factorization, using the algorithm suggested by Shor. A $K$-bit number can be factored in time of order $K^3$ using a machine capable of storing $5K+1$ qubits. Evaluation of the modular exponential function (the bottleneck of Shor's algorithm) could be achieved with about $72 K^3$ elementary quantum gates; implementation using a linear ion trap would require about $396 K^3$ laser pulses. A proof-of-principle demonstration of quantum factoring (factorization of 15) could be performed with only 6 trapped ions and 38 laser pulses. Though the ion trap may never be a useful computer, it will be a powerful device for exploring experimentally the properties of entangled quantum states.

  3. Human Factors of Reporting Systems

    E-Print Network [OSTI]

    Johnson, C.W.

    Johnson,C.W. P. Carayon (ed.), A Handbook of Human Factors and Ergonomics in Healthcare and Patient Safety, Lawrence Erlbaum, London, UK. pp 715-750 Lawrence Erlbaum Associates

  4. How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center Infrastructure Systems

    SciTech Connect (OSTI)

    Mathew, Paul; Greenberg, Steve; Ganguly, Srirupa; Sartor, Dale; Tschudi, William

    2009-04-01

    Data centers are among the most energy intensive types of facilities, and they are growing dramatically in terms of size and intensity [EPA 2007]. As a result, in the last few years there has been increasing interest from stakeholders - ranging from data center managers to policy makers - to improve the energy efficiency of data centers, and there are several industry and government organizations that have developed tools, guidelines, and training programs. There are many opportunities to reduce energy use in data centers and benchmarking studies reveal a wide range of efficiency practices. Data center operators may not be aware of how efficient their facility may be relative to their peers, even for the same levels of service. Benchmarking is an effective way to compare one facility to another, and also to track the performance of a given facility over time. Toward that end, this article presents the key metrics that facility managers can use to assess, track, and manage the efficiency of the infrastructure systems in data centers, and thereby identify potential efficiency actions. Most of the benchmarking data presented in this article are drawn from the data center benchmarking database at Lawrence Berkeley National Laboratory (LBNL). The database was developed from studies commissioned by the California Energy Commission, Pacific Gas and Electric Co., the U.S. Department of Energy and the New York State Energy Research and Development Authority.

  5. Scale-adjusted metrics for predicting the evolution of urban indicators and quantifying the performance of cities

    E-Print Network [OSTI]

    Alves, Luiz G A; Lenzi, Ervin K; Ribeiro, Haroldo V

    2015-01-01

    More than a half of world population is now living in cities and this number is expected to be two-thirds by 2050. Fostered by the relevancy of a scientific characterization of cities and for the availability of an unprecedented amount of data, academics have recently immersed in this topic and one of the most striking and universal finding was the discovery of robust allometric scaling laws between several urban indicators and the population size. Despite that, most governmental reports and several academic works still ignore these nonlinearities by often analyzing the raw or the per capita value of urban indicators, a practice that actually makes the urban metrics biased towards small or large cities depending on whether we have super or sublinear allometries. By following the ideas of Bettencourt et al., we account for this bias by evaluating the difference between the actual value of an urban indicator and the value expected by the allometry with the population size. We show that this scale-adjusted metri...

  6. Comparative hazard analysis and toxicological modeling of diverse nanomaterials using the embryonic zebrafish (EZ) metric of toxicity

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

    Harper, Bryan; Thomas, Dennis G.; Chikkagoudar, Satish; Baker, Nathan A.; Tang, Kaizhi; Heredia-Langner, Alejandro; Lins, Roberto D.; Harper, Stacey

    2015-06-04

    The integration of rapid assays, large data sets, informatics and modeling can overcome current barriers in understanding nanomaterial structure-toxicity relationships by providing a weight-of-the-evidence mechanism to generate hazard rankings for nanomaterials. Here we present the use of a rapid, low-cost assay to perform screening-level toxicity evaluations of nanomaterials in vivo. Calculated EZ Metric scores, a combined measure of morbidity and mortality, were established at realistic exposure levels and used to develop a predictive model of nanomaterial toxicity. Hazard ranking and clustering analysis of 68 diverse nanomaterials revealed distinct patterns of toxicity related to both core composition and outermost surface chemistrymore »of nanomaterials. The resulting clusters guided the development of a predictive model of gold nanoparticle toxicity to embryonic zebrafish. In addition, our findings suggest that risk assessments based on the size and core composition of nanomaterials alone may be wholly inappropriate, especially when considering complex engineered nanomaterials. These findings reveal the need to expeditiously increase the availability of quantitative measures of nanomaterial hazard and broaden the sharing of that data and knowledge to support predictive modeling. In addition, research should continue to focus on methodologies for developing predictive models of nanomaterial hazard based on sub-lethal responses to low dose exposures.« less

  7. Short Chosen-Prefix Collisions for MD5 and the Creation of a Rogue CA Certificate

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    , that for at least one commercial CA the rele- vant obstacles could be overcome with non-negligible probability

  8. The Prefix PO- and Aspect in Russian and Polish: A Cognitive Grammar Account

    E-Print Network [OSTI]

    Christensen, Jason Heath

    2011-12-31

    with the western group in some respects. It is argued in chapter 5 that the semantic differences between the Russian and Polish categories of the perfective aspect help explain the differences in the meanings of po- in the two languages. Section 1.1 presents... theoretical preliminaries of Cognitive Grammar; section 1.2 presents theoretical preliminaries of verbal aspect, and a descriptive background of Russian and Polish 3 These meanings are defined in 1.3 and 1...

  9. Determination of power distribution in the VVER-440 core on the basis of data from in-core monitors by means of a metric analysis

    SciTech Connect (OSTI)

    Kryanev, A. V.; Udumyan, D. K. [National Research Nuclear University “MEPHI,” (Russian Federation); Kurchenkov, A. Yu., E-mail: s327@vver.kiae.ru; Gagarinskiy, A. A. [National Research Center Kurchatov Institute (Russian Federation)

    2014-12-15

    Problems associated with determining the power distribution in the VVER-440 core on the basis of a neutron-physics calculation and data from in-core monitors are considered. A new mathematical scheme is proposed for this on the basis of a metric analysis. In relation to the existing mathematical schemes, the scheme in question improves the accuracy and reliability of the resulting power distribution.

  10. FY 2015 METRIC SUMMARY

    Broader source: Energy.gov [DOE]

    The Root Cause Analysis report identifies the key elements necessary to make the meaningful changes required to consistently deliver projects within cost and schedule performance parameters.

  11. Metrics for Sustainable Manufacturing

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Vijayaraghavan, Athulan; Dornfeld, David

    2008-01-01

    management – life cycle assessment – principles andG. , 2001. “Life cycle management and assessment: approachesan environmental life-cycle assessment of automobile

  12. Newtonian Lorentz Metric Spaces

    E-Print Network [OSTI]

    Costea, Serban

    2011-01-01

    This paper studies Newtonian Sobolev-Lorentz spaces. We prove that these spaces are Banach. We also study the global p,q-capacity and the p,q-modulus of families of rectifiable curves. Under some additional assumptions (that is, the space carries a doubling measure and a weak Poincare inequality) and some restrictions on q, we show that the Lipschitz functions are dense in those spaces. Moreover, in the same setting we also show that the p,q-capacity is Choquet provided that q is strictly greater than 1. We provide a counterexample for the density result of Lipschitz functions in the Euclidean setting.

  13. Appendix B Milestones Metrics

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

    Oct Nov Dec 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr FYTD Contract- To-Date Nuclear Facility Completions ( of facilities) 4041 0 0 0 0 0 0 0 0 0 Radiological Facility Completions ( of...

  14. Oil Security Metrics Model

    SciTech Connect (OSTI)

    Greene, David L.; Leiby, Paul N.

    2005-03-06

    A presentation to the IWG GPRA USDOE, March 6, 2005, Washington, DC. OSMM estimates oil security benefits of changes in the U.S. oil market.

  15. Metrics for Sustainable Manufacturing

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Vijayaraghavan, Athulan; Dornfeld, David A.

    2008-01-01

    ?Investment EnergyUse LC?Investment Oil Scarcity Global TimeInvestment Understand time remaining until known stocks of oil

  16. Variable buoyancy system metric

    E-Print Network [OSTI]

    Jensen, Harold Franklin

    2009-01-01

    Over the past 20 years, underwater vehicle technology has undergone drastic improvements, and vehicles are quickly gaining popularity as a tool for numerous oceanographic tasks. Systems used on the vehicle to alter buoyancy, ...

  17. Metrics for Sustainable Manufacturing

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Vijayaraghavan, Athulan; Dornfeld, David

    2008-01-01

    Germany United States Australia Production Own Use Distribution GHG Emissions Intensity (kg CO2eq/kWh) Electricity to Energy

  18. Metrics for Sustainable Manufacturing

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Vijayaraghavan, Athulan; Dornfeld, David A.

    2008-01-01

    management – life cycle assessment – principles andan environmental life-cycle assessment of automobile14040 standards on life-cycle assessment [20]. The four main

  19. Metrics for Sustainable Manufacturing

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Vijayaraghavan, Athulan; Dornfeld, David

    2008-01-01

    for implementing green manufacturing”. Trans. of NAMRI/SME,on: Environmentally Benign Manufacturing (EBM). Tech. rep. ,towards sustainable manufacturing”. Proceedings of the In-

  20. Metrics for Sustainable Manufacturing

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Vijayaraghavan, Athulan; Dornfeld, David A.

    2008-01-01

    S. , 2008. “Carbon emissions and ces(tm) in manufacturing”.CIRP Annals - Manufacturing Technology, 57, pp. 17–20.ventional tool and die manufacturing”. Journal of Cleaner

  1. Fire Protection Program Metrics

    Broader source: Energy.gov [DOE]

    Presenter: Perry E. D ’Antonio, P.E., Acting Sr. Manager, Fire Protection - Sandia National Laboratories

  2. ASR - 2011 Performance Metrics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow,ARM: Three Meterhighlights/Site| People

  3. ARM - 2006 Performance Metrics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday, August 10, 20102016 NewsUsers' Executive09 I N D UMeeting 20066

  4. ARM - 2007 Performance Metrics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday, August 10, 20102016 NewsUsers' Executive09 I N D UMeetingMeeting7

  5. ARM - 2008 Performance Metrics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday, August 10, 20102016 NewsUsers' Executive09 I N DScience8 Performance

  6. NIF Target Shot Metrics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxide capture CS Seminars CalendarOilPSTarget Shot

  7. Human factors in software development

    SciTech Connect (OSTI)

    Curtis, B.

    1986-01-01

    This book presents an overview of ergonomics/human factors in software development, recent research, and classic papers. Articles are drawn from the following areas of psychological research on programming: cognitive ergonomics, cognitive psychology, and psycholinguistics. Topics examined include: theoretical models of how programmers solve technical problems, the characteristics of programming languages, specification formats in behavioral research and psychological aspects of fault diagnosis.

  8. Nonnegative matrix factorization with -divergence

    E-Print Network [OSTI]

    Cichocki, Andrzej

    Nonnegative matrix factorization with -divergence Andrzej Cichocki a , Hyekyoung Lee b , Yong of Science and Technology San 31 Hyoja-dong, Nam-gu, Pohang 790-784, Korea Abstract Nonnegative matrix reduction, the goal of which is to decompose nonnegative data matrix X into a product of basis matrix

  9. Transfer Factors for Contaminant Uptake

    E-Print Network [OSTI]

    of supply, upon written request as follows: Address: U.S. Nuclear Regulatory Commission OfficeTransfer Factors for Contaminant Uptake by Fruit and Nut Trees Office of Nuclear Regulatory; licensee event reports; and Commission papers and their attachments. NRC publications in the NUREG series

  10. Optimization Online - Integer Factorization is in P

    E-Print Network [OSTI]

    Yuly Shipilevsky

    2012-08-31

    Aug 31, 2012 ... Integer Factorization is in P. Yuly Shipilevsky (yulysh2000 ***at*** yahoo.ca). Abstract: A polynomial-time algorithm for integer factorization, ...

  11. BIANCHI TYPE A HYPER-SYMPLECTIC AND HYPER-KAHLER METRICS IN 4D L.C. DE ANDRES, M. FERNANDEZ, S. IVANOV, J.A. SANTISTEBAN, L. UGARTE, AND D. VASSILEV

    E-Print Network [OSTI]

    Vassilev, Dimiter N.

    . They are defined as follows. An almost hyper-paracomplex structure on a 4n-dimensional man- ifold M is a triple (JBIANCHI TYPE A HYPER-SYMPLECTIC AND HYPER-K¨AHLER METRICS IN 4D L.C. DE ANDR´ES, M. FERN´ANDEZ, S of hyper-K¨ahler and hyper-symplectic (also known as neutral hyper-K¨ahler or hyper-parak¨ahler) metrics

  12. FY 2009 Annual Report of Joule Software Metric SC GG 3.1/2.5.2, Improve Computational Science Capabilities

    SciTech Connect (OSTI)

    Kothe, Douglas B [ORNL; Roche, Kenneth J [ORNL; Kendall, Ricky A [ORNL

    2010-01-01

    The Joule Software Metric for Computational Effectiveness is established by Public Authorizations PL 95-91, Department of Energy Organization Act, and PL 103-62, Government Performance and Results Act. The U.S. Office of Management and Budget (OMB) oversees the preparation and administration of the President s budget; evaluates the effectiveness of agency programs, policies, and procedures; assesses competing funding demands across agencies; and sets the funding priorities for the federal government. The OMB has the power of audit and exercises this right annually for each federal agency. According to the Government Performance and Results Act of 1993 (GPRA), federal agencies are required to develop three planning and performance documents: 1.Strategic Plan: a broad, 3 year outlook; 2.Annual Performance Plan: a focused, 1 year outlook of annual goals and objectives that is reflected in the annual budget request (What results can the agency deliver as part of its public funding?); and 3.Performance and Accountability Report: an annual report that details the previous fiscal year performance (What results did the agency produce in return for its public funding?). OMB uses its Performance Assessment Rating Tool (PART) to perform evaluations. PART has seven worksheets for seven types of agency functions. The function of Research and Development (R&D) programs is included. R&D programs are assessed on the following criteria: Does the R&D program perform a clear role? Has the program set valid long term and annual goals? Is the program well managed? Is the program achieving the results set forth in its GPRA documents? In Fiscal Year (FY) 2003, the Department of Energy Office of Science (DOE SC-1) worked directly with OMB to come to a consensus on an appropriate set of performance measures consistent with PART requirements. The scientific performance expectations of these requirements reach the scope of work conducted at the DOE national laboratories. The Joule system emerged from this interaction. Joule enables the chief financial officer and senior DOE management to track annual performance on a quarterly basis. Joule scores are reported as success, goal met (green light in PART), mixed results, goal partially met (yellow light in PART), and unsatisfactory, goal not met (red light in PART). Joule links the DOE strategic plan to the underlying base program targets.

  13. On Factorization of Molecular Wavefunctions

    E-Print Network [OSTI]

    Thierry Jecko; Brian T. Sutcliffe; R. Guy Woolley

    2015-07-18

    Recently there has been a renewed interest in the chemical physics literature of factorization of the position representation eigenfunctions \\{$\\Phi$\\} of the molecular Schr\\"odinger equation as originally proposed by Hunter in the 1970s. The idea is to represent $\\Phi$ in the form $\\varphi\\chi$ where $\\chi$ is \\textit{purely} a function of the nuclear coordinates, while $\\varphi$ must depend on both electron and nuclear position variables in the problem. This is a generalization of the approximate factorization originally proposed by Born and Oppenheimer, the hope being that an `exact' representation of $\\Phi$ can be achieved in this form with $\\varphi$ and $\\chi$ interpretable as `electronic' and `nuclear' wavefunctions respectively. We offer a mathematical analysis of these proposals that identifies ambiguities stemming mainly from the singularities in the Coulomb potential energy.

  14. On Factorization of Molecular Wavefunctions

    E-Print Network [OSTI]

    Thierry Jecko; Brian T. Sutcliffe; R. Guy Woolley

    2015-09-05

    Recently there has been a renewed interest in the chemical physics literature of factorization of the position representation eigenfunctions \\{$\\Phi$\\} of the molecular Schr\\"odinger equation as originally proposed by Hunter in the 1970s. The idea is to represent $\\Phi$ in the form $\\varphi\\chi$ where $\\chi$ is \\textit{purely} a function of the nuclear coordinates, while $\\varphi$ must depend on both electron and nuclear position variables in the problem. This is a generalization of the approximate factorization originally proposed by Born and Oppenheimer, the hope being that an `exact' representation of $\\Phi$ can be achieved in this form with $\\varphi$ and $\\chi$ interpretable as `electronic' and `nuclear' wavefunctions respectively. We offer a mathematical analysis of these proposals that identifies ambiguities stemming mainly from the singularities in the Coulomb potential energy.

  15. On Factorization of Molecular Wavefunctions

    E-Print Network [OSTI]

    Thierry Jecko; Brian T. Sutcliffe; R. Guy Woolley

    2015-10-13

    Recently there has been a renewed interest in the chemical physics literature of factorization of the position representation eigenfunctions \\{$\\Phi$\\} of the molecular Schr\\"odinger equation as originally proposed by Hunter in the 1970s. The idea is to represent $\\Phi$ in the form $\\varphi\\chi$ where $\\chi$ is \\textit{purely} a function of the nuclear coordinates, while $\\varphi$ must depend on both electron and nuclear position variables in the problem. This is a generalization of the approximate factorization originally proposed by Born and Oppenheimer, the hope being that an `exact' representation of $\\Phi$ can be achieved in this form with $\\varphi$ and $\\chi$ interpretable as `electronic' and `nuclear' wavefunctions respectively. We offer a mathematical analysis of these proposals that identifies ambiguities stemming mainly from the singularities in the Coulomb potential energy.

  16. Factors Impacting Decommissioning Costs - 13576

    SciTech Connect (OSTI)

    Kim, Karen; McGrath, Richard [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)] [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)

    2013-07-01

    The Electric Power Research Institute (EPRI) studied United States experience with decommissioning cost estimates and the factors that impact the actual cost of decommissioning projects. This study gathered available estimated and actual decommissioning costs from eight nuclear power plants in the United States to understand the major components of decommissioning costs. Major costs categories for decommissioning a nuclear power plant are removal costs, radioactive waste costs, staffing costs, and other costs. The technical factors that impact the costs were analyzed based on the plants' decommissioning experiences. Detailed cost breakdowns by major projects and other cost categories from actual power plant decommissioning experiences will be presented. Such information will be useful in planning future decommissioning and designing new plants. (authors)

  17. Human factors in waste management

    SciTech Connect (OSTI)

    Moray, N.

    1994-10-01

    This article examines the role of human factors in radioactive waste management. Although few problems and ergonomics are special to radioactive waste management, some problems are unique especially with long term storage. The entire sociotechnical system must be looked at in order to see where improvement can take place because operator errors, as seen in Chernobyl and Bhopal, are ultimately the result of management errors.

  18. Hausdorff dimension and filling factor

    E-Print Network [OSTI]

    Wellington Cruz

    1998-02-25

    We propose a new hierarchy scheme for the filling factor, a parameter which characterizes the occurrence of the Fractional Quantum Hall Effect (FQHE). We consider the Hausdorff dimension, $h$, as a parameter for classifying fractional spin particles, such that, it is written in terms of the statistics of the collective excitations. The number $h$ classifies these excitations with different statistics in terms of its homotopy class.

  19. On the local energy decay of solutions of the Dirac equation in the non-extreme Kerr-Newman metric, I

    E-Print Network [OSTI]

    Monika Winklmeier; Osanobu Yamada

    2008-02-04

    We investigate the local energy decay of solutions of the Dirac equation in the non-extreme Kerr-Newman metric. First, we write the Dirac equation as a Cauchy problem and define the Dirac operator. It is shown that the Dirac operator is selfadjoint in a suitable Hilbert space. With the RAGE theorem, we show that for each particle its energy located in any compact region outside of the event horizon of the Kerr-Newman black hole decays in the time mean.

  20. Dissecting Soft Radiation with Factorization

    E-Print Network [OSTI]

    Iain W. Stewart; Frank J. Tackmann; Wouter J. Waalewijn

    2015-02-10

    An essential part of high-energy hadronic collisions is the soft hadronic activity that underlies the primary hard interaction. It includes soft radiation from the primary hard partons, secondary multiple parton interactions (MPI), and factorization-violating effects. The invariant mass spectrum of the leading jet in $Z$+jet and $H$+jet events is directly sensitive to these effects, and we use a QCD factorization theorem to predict its dependence on the jet radius $R$, jet $p_T$, jet rapidity, and partonic process for both the perturbative and nonperturbative components of primary soft radiation. We prove that the nonperturbative contributions involve only odd powers of $R$, and the linear $R$ term is universal for quark and gluon jets. The hadronization model in PYTHIA8 agrees well with these properties. The perturbative soft initial state radiation (ISR) has a contribution that depends on the jet area in the same way as the underlying event, but this degeneracy is broken by dependence on the jet $p_T$. The size of this soft ISR contribution is proportional to the color state of the initial partons, yielding the same positive contribution for $gg\\to Hg$ and $gq\\to Zq$, but a negative interference contribution for $q\\bar q\\to Z g$. Hence, measuring these dependencies allows one to separate hadronization, soft ISR, and MPI contributions in the data.

  1. Dilaton field minimally coupled to 2+1 gravity; uniqueness of the static Chan-Mann black hole and new dilaton stationary metrics

    SciTech Connect (OSTI)

    García-Diaz, Alberto A.

    2014-01-14

    Using the Schwarzschild coordinate frame for a static cyclic symmetric metric in 2+1 gravity coupled minimally to a dilaton logarithmically depending on the radial coordinate in the presence of an exponential potential, by solving first order linear Einstein equations, the general solution is derived and it is identified with the Chan–Mann dilaton solution. In these coordinates, a new stationary dilaton solution is obtained; it does not allow for a de Sitter–Anti-de Sitter limit at spatial infinity, where its structural functions increase indefinitely. On the other hand, it is horizonless and allows for a naked singularity at the origin of coordinates; moreover, one can identify at a large radial coordinate a (quasi-local) mass parameter and in the whole space a constant angular momentum. Via a general SL(2,R)–transformation, applied on the static cyclic symmetric metric, a family of stationary dilaton solutions has been generated. A particular SL(2,R)–transformation is identified, which gives rise to the rotating Chan–Mann dilaton solution. All the exhibited solutions have been characterized by their quasi-local energy, mass, and momentum through their series expansions at spatial infinity. The algebraic structure of the Ricci–energy-momentum, and Cotton tensors is given explicitly.

  2. CT head-scan dosimetry in an anthropomorphic phantom and associated measurement of ACR accreditation-phantom imaging metrics under clinically representative scan conditions

    SciTech Connect (OSTI)

    Brunner, Claudia C.; Stern, Stanley H.; Chakrabarti, Kish; Minniti, Ronaldo; Parry, Marie I.; Skopec, Marlene

    2013-08-15

    Purpose: To measure radiation absorbed dose and its distribution in an anthropomorphic head phantom under clinically representative scan conditions in three widely used computed tomography (CT) scanners, and to relate those dose values to metrics such as high-contrast resolution, noise, and contrast-to-noise ratio (CNR) in the American College of Radiology CT accreditation phantom.Methods: By inserting optically stimulated luminescence dosimeters (OSLDs) in the head of an anthropomorphic phantom specially developed for CT dosimetry (University of Florida, Gainesville), we measured dose with three commonly used scanners (GE Discovery CT750 HD, Siemens Definition, Philips Brilliance 64) at two different clinical sites (Walter Reed National Military Medical Center, National Institutes of Health). The scanners were set to operate with the same data-acquisition and image-reconstruction protocols as used clinically for typical head scans, respective of the practices of each facility for each scanner. We also analyzed images of the ACR CT accreditation phantom with the corresponding protocols. While the Siemens Definition and the Philips Brilliance protocols utilized only conventional, filtered back-projection (FBP) image-reconstruction methods, the GE Discovery also employed its particular version of an adaptive statistical iterative reconstruction (ASIR) algorithm that can be blended in desired proportions with the FBP algorithm. We did an objective image-metrics analysis evaluating the modulation transfer function (MTF), noise power spectrum (NPS), and CNR for images reconstructed with FBP. For images reconstructed with ASIR, we only analyzed the CNR, since MTF and NPS results are expected to depend on the object for iterative reconstruction algorithms.Results: The OSLD measurements showed that the Siemens Definition and the Philips Brilliance scanners (located at two different clinical facilities) yield average absorbed doses in tissue of 42.6 and 43.1 mGy, respectively. The GE Discovery delivers about the same amount of dose (43.7 mGy) when run under similar operating and image-reconstruction conditions, i.e., without tube current modulation and ASIR. The image-metrics analysis likewise showed that the MTF, NPS, and CNR associated with the reconstructed images are mutually comparable when the three scanners are run with similar settings, and differences can be attributed to different edge-enhancement properties of the applied reconstruction filters. Moreover, when the GE scanner was operated with the facility's scanner settings for routine head exams, which apply 50% ASIR and use only approximately half of the 100%-FBP dose, the CNR of the images showed no significant change. Even though the CNR alone is not sufficient to characterize the image quality and justify any dose reduction claims, it can be useful as a constancy test metric.Conclusions: This work presents a straightforward method to connect direct measurements of CT dose with objective image metrics such as high-contrast resolution, noise, and CNR. It demonstrates that OSLD measurements in an anthropomorphic head phantom allow a realistic and locally precise estimation of magnitude and spatial distribution of dose in tissue delivered during a typical CT head scan. Additional objective analysis of the images of the ACR accreditation phantom can be used to relate the measured doses to high contrast resolution, noise, and CNR.

  3. Capacity Factor Risk At Nuclear Power Plants

    E-Print Network [OSTI]

    Du, Yangbo

    We develop a model of the dynamic structure of capacity factor risk. It incorporates the risk that the capacity factor may vary widely from year-to-year, and also the risk that the reactor may be permanently shutdown prior ...

  4. Cone Penetrometer N Factor Determination Testing Results

    SciTech Connect (OSTI)

    Follett, Jordan R.

    2014-03-05

    This document contains the results of testing activities to determine the empirical 'N Factor' for the cone penetrometer in kaolin clay simulant. The N Factor is used to releate resistance measurements taken with the cone penetrometer to shear strength.

  5. Common risk factors in bank stocks 

    E-Print Network [OSTI]

    Viale, Ariel Marcelo

    2007-09-17

    This dissertation provides evidence on the risk factors that are priced in bank equities. Alternative empirical models with precedent in the nonfinancial asset pricing literature are tested, including the single-factor Capital Asset Pricing Model...

  6. Industrial Equipment Demand and Duty Factors 

    E-Print Network [OSTI]

    Dooley, E. S.; Heffington, W. M.

    1998-01-01

    Demand and duty factors have been measured for selected equipment (air compressors, electric furnaces, injection molding machines, centrifugal loads, and others) in industrial plants. Demand factors for heavily loaded air ...

  7. Guidelines for Power Factor Improvement Projects 

    E-Print Network [OSTI]

    Massey, G. W.

    1999-01-01

    Power factor is an indication of electrical system efficiency. Low power factor, or low system efficiency, may be due to one or more causes, including lightly loaded transformers, oversized electric motors, and harmonic-generating non-linear loads...

  8. Closing a Loophole in Factorization Proofs

    SciTech Connect (OSTI)

    Bodwin, Geoffrey T. [HEP Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois, 60439 (United States); Garcia i Tormo, Xavier [HEP Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois, 60439 (United States); Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2G7 (Canada); Lee, Jungil [Department of Physics, Korea University, Seoul 136-701 (Korea, Republic of)

    2011-05-23

    We address the possibility in factorization proofs that low-energy collinear gluons can couple to soft gluons.

  9. http://erg.sagepub.com/ Factors Applications

    E-Print Network [OSTI]

    Kaber, David B.

    http://erg.sagepub.com/ Factors Applications Ergonomics in Design: The Quarterly of Human httpErgonomics in Design: The Quarterly of Human Factors Applications Peter A. Hancock, Richard J. Jagacinski: Human Factors and Ergonomics Society can be found at:Ergonomics in Design: The Quarterly of Human

  10. Human factors: a necessary tool for industry

    SciTech Connect (OSTI)

    Starcher, K.O.

    1984-03-09

    The need for human factors (ergonomics) input in the layout of a ferroelectric ceramics laboratory is presented as an example of the overall need for human factors professionals in industry. However, even in the absence of one trained in human factors, knowledge of a few principles in ergonomics will provide many possibilities for improving performance in the industrial environment.

  11. Note on Integer Factoring Algorithms II

    E-Print Network [OSTI]

    N. A. Carella

    2007-02-08

    This note introduces a new class of integer factoring algorithms. Two versions of this method will be described, deterministic and probabilistic. These algorithms are practical, and can factor large classes of balanced integers N = pq, p < q < 2p in superpolynomial time. Further, an extension of the Fermat factoring method is proposed.

  12. Journal influence factors6 Massimo Franceschet

    E-Print Network [OSTI]

    Franceschet, Massimo

    Journal influence factors6 Massimo Franceschet Department of Mathematics and Computer Science of journal influence, namely 2- year impact factor, 5-year impact factor, eigenfactor and article influence. These indicators have been recently added by Thomson Reuters to the Journal Citation Reports, in both science

  13. Antenna factorization in strongly ordered limits

    SciTech Connect (OSTI)

    Kosower, David A.

    2005-02-15

    When energies or angles of gluons emitted in a gauge-theory process are small and strongly ordered, the emission factorizes in a simple way to all orders in perturbation theory. I show how to unify the various strongly ordered soft, mixed soft-collinear, and collinear limits using antenna factorization amplitudes, which are generalizations of the Catani-Seymour dipole factorization function.

  14. Masas and Bimodule Decompositions of II_1 Factors 

    E-Print Network [OSTI]

    Mukherjee, Kunal K.

    2010-10-12

    Radon measure on a metric space X and T be a measurable map into (Y,?Y ). Let ? be a ?-finite measure on ?Y such that T??lessmuch?. If ?Y is countably generated and contains all singleton sets {t}, then ? has a (T,?) disintegration. The measures ?t... of Thm. II.16 is due to von Neumann. Proposition II.17. Let ? be a Radon measure on a compact metric space X and T be a measurable map into (Y,?Y ). Let ? be a ?-finite measure on ?Y such that T?? lessmuch ?. Assume that ?Y is countably generated...

  15. Factors fragmenting the Russian Federation

    SciTech Connect (OSTI)

    Brown, E.

    1993-10-06

    This paper examines the factors that threaten the future of the Russian Federation (RF). The observations are based on a study that focused on eight republics: Mordova, Udmurtia, Tatarstan, Mari El, Bashkortostan, Kabardino-Balkaria, Buryatia, and Altay Republic. These republics were selected for their geographic and economic significance to the RF. Tatarstan, Bashkortostan, Udmurtia, and Mari El are located on important supply routes, such as the Volga River and the trans-Siberian railroad. Some of these republics are relatively wealthy, with natural resources such as oil (e.g., Tatarstan and Bashkortostan), and all eight republics play significant roles in the military-industrial complex. The importance of these republics to the RF contrasts to the relative insignificance of the independence-minded Northern Caucasus area. The author chose not to examine the Northern Caucasus region (except Kabardino-Balkaria) because these republics may have only a minor impact on the rest of the RF if they secede. Their impact would be minimized because they lie on the frontiers of the RF. Many Russians believe that {open_quotes}it might be best to let such a troublesome area secede.{close_quotes}

  16. Synthetic heparin-binding growth factor analogs

    DOE Patents [OSTI]

    Pena, Louis A.; Zamora, Paul; Lin, Xinhua; Glass, John D.

    2007-01-23

    The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain that binds a heparin-binding growth factor receptor, covalently bound to a hydrophobic linker, which is in turn covalently bound to a non-signaling peptide that includes a heparin-binding domain. The synthetic heparin-binding growth factor analogs are useful as soluble biologics or as surface coatings for medical devices.

  17. Lower bounds for approximate factorizations via semidefinite ...

    E-Print Network [OSTI]

    ABSTRACT The problem of approximately factoring a real or complex multivariate polynomial f seeks minimal perturbations ? f to the coefficients of the input ...

  18. Industrial Power Factor Analysis Guidebook. Electrotek Concepts...

    Office of Scientific and Technical Information (OSTI)

    low power factors, increased conductor and transformer losses, and lower voltages. Utilities must supply both active and reactive power and compensate for these losses. Power...

  19. Emerging alternatives to the impact factor

    E-Print Network [OSTI]

    Banks, Marcus A.; Dellavalle, Robert

    2008-01-01

    abs/0709.0896. 12. Public Library of Science Medicineimpact factor game,” Public Library of Science Medicine Voljournals published by the Public Library of Science, follows

  20. Tetrahydroquinoline Derivatives as Potent and Selective Factor...

    Office of Scientific and Technical Information (OSTI)

    Derivatives as Potent and Selective Factor XIa Inhibitors Authors: Quan, Mimi L. ; Wong, Pancras C. ; Wang, Cailan ; Woerner, Francis ; Smallheer, Joanne M. ; Barbera, Frank...

  1. CONTROL OF MECHANICALLY ACTIVATED POLYMERSOME FUSION: FACTORS...

    Office of Scientific and Technical Information (OSTI)

    MECHANICALLY ACTIVATED POLYMERSOME FUSION: FACTORS AFFECTING FUSION. Henderson, Ian M.; Paxton, Walter F Abstract not provided. Sandia National Laboratories (SNL-NM), Albuquerque,...

  2. Factorization for hadronic heavy quarkonium production

    E-Print Network [OSTI]

    Jian-Wei Qiu

    2006-10-31

    We briefly review several models of heavy quarkonium production in hadronic collisions, and discuss the status of QCD factorization for these production models.

  3. CONTROL OF MECHANICALLY ACTIVATED POLYMERSOME FUSION: FACTORS...

    Office of Scientific and Technical Information (OSTI)

    CONTROL OF MECHANICALLY ACTIVATED POLYMERSOME FUSION: FACTORS AFFECTING FUSION. Citation Details In-Document Search Title: CONTROL OF MECHANICALLY ACTIVATED POLYMERSOME FUSION:...

  4. Timed Nuclear Import of a Transcription Factor During Erythropoiesis Erythroid Krppel-like factor (EKLF) is an erythroid transcription factor

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    Timed Nuclear Import of a Transcription Factor During Erythropoiesis Erythroid Krüppel-like factor. The regulatory mechanisms of the nuclear transport of EKLF during erythroid differentiation have remained unclear provided essential new insights into this process. They show that nuclear import of EKLF in erythroid cells

  5. Mon. Not. R. Astron. Soc. 000, 000--000 (0000) Printed 20 August 2008 (MN L A T E X style file v1.3) A Metric and Optimisation Scheme for Microlens Planet

    E-Print Network [OSTI]

    Horne, Keith

    that the planet is detectable is P det # 0.2 (mp/mJ ) 1/2 for ``cool planets'' in the ``lensing zone'', a # 0.3) A Metric and Optimisation Scheme for Microlens Planet Searches Keith Horne 1 , Colin Snodgrass 2 , Yianni by planets near the lens stars. We advocate optimizing microlens planet searches by using an automatic

  6. Factors Affecting PMU Installation Costs (October 2014) | Department...

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

    Factors Affecting PMU Installation Costs (October 2014) Factors Affecting PMU Installation Costs (October 2014) The Department of Energy investigated the major cost factors that...

  7. Psychology 4330, Spring 2011. Human Factors Engineering

    E-Print Network [OSTI]

    Sanders, Matthew

    with an interest in design should remember that it is not really possible to teach ergonomic design per se without: Guastello, S. J. (2006). Human factors engineering and ergonomics: A systems approach. Mahwah, NJ: Lawrence/19 Introduction to human factors (T1) 1/24 Usability evaluation methods (T2) 1/31 Systems that change over time (T

  8. Photon impact factor in the NLO

    SciTech Connect (OSTI)

    Balitsky, Ian [JLAB

    2013-04-01

    The photon impact factor for the BFKL pomeron is calculated in the next-to-leading order (NLO) approximation using the operator expansion in Wilson lines. The result is represented as a NLO k{sub T}-factorization formula for the structure functions of small-x deep inelastic scattering.

  9. Gauss Sum Factorization with Cold Atoms

    SciTech Connect (OSTI)

    Gilowski, M.; Wendrich, T.; Mueller, T.; Ertmer, W.; Rasel, E. M. [Institut fuer Quantenoptik, Leibniz Universitaet Hannover, Welfengarten 1, D-30167 Hannover (Germany); Jentsch, Ch. [Astrium GmbH-Satellites, 88039 Friedrichshafen (Germany); Schleich, W. P. [Institut fuer Quantenphysik, Universitaet Ulm, Albert-Einstein-Allee 11, D-89081 Ulm (Germany)

    2008-01-25

    We report the first implementation of a Gauss sum factorization algorithm by an internal state Ramsey interferometer using cold atoms. A sequence of appropriately designed light pulses interacts with an ensemble of cold rubidium atoms. The final population in the involved atomic levels determines a Gauss sum. With this technique we factor the number N=263193.

  10. Platelet-derived growth factor and transforming growth factor beta synergistically potentiate inflammatory mediator synthesis by fibroblast-like synoviocytes

    E-Print Network [OSTI]

    Rosengren, Sanna; Corr, Maripat; Boyle, David L

    2010-01-01

    et al. , Platelet-derived growth factor and transformingactivated by platelet-derived growth factor. Clin Expmesylate inhibits platelet derived growth factor stimulated

  11. Effects of friction factor and slip factor on the performance of a centrifugal slurry pump 

    E-Print Network [OSTI]

    Sheth, Ketankumar Kantilal

    1985-01-01

    EFFECTS OF FRICTION FACTOR AND SLIP FACTOR ON THE PERFORMANCE OF A CENTRIFUGAL SLURRY PUMP A Thesis by KETANKUMAR KANTILAL SHETH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1985 Ma]or Sub]ect: Mechanical Engineering EFFECTS OF FRICTION FACTOR AND SLIP FACTOR ON THE PERFORMANCE OF A CENTRIFUGAL SLURRY PUMP A Thesis by KETANKUMAR KANTILAL SHETH Approved as to style and content by...

  12. Commercial Building Energy Baseline Modeling Software: Performance Metrics and Method Testing with Open Source Models and Implications for Proprietary Software Testing

    SciTech Connect (OSTI)

    Price, Phillip N.; Granderson, Jessica; Sohn, Michael; Addy, Nathan; Jump, David

    2013-09-01

    The overarching goal of this work is to advance the capabilities of technology evaluators in evaluating the building-level baseline modeling capabilities of Energy Management and Information System (EMIS) software. Through their customer engagement platforms and products, EMIS software products have the potential to produce whole-building energy savings through multiple strategies: building system operation improvements, equipment efficiency upgrades and replacements, and inducement of behavioral change among the occupants and operations personnel. Some offerings may also automate the quantification of whole-building energy savings, relative to a baseline period, using empirical models that relate energy consumption to key influencing parameters, such as ambient weather conditions and building operation schedule. These automated baseline models can be used to streamline the whole-building measurement and verification (M&V) process, and therefore are of critical importance in the context of multi-measure whole-building focused utility efficiency programs. This report documents the findings of a study that was conducted to begin answering critical questions regarding quantification of savings at the whole-building level, and the use of automated and commercial software tools. To evaluate the modeling capabilities of EMIS software particular to the use case of whole-building savings estimation, four research questions were addressed: 1. What is a general methodology that can be used to evaluate baseline model performance, both in terms of a) overall robustness, and b) relative to other models? 2. How can that general methodology be applied to evaluate proprietary models that are embedded in commercial EMIS tools? How might one handle practical issues associated with data security, intellectual property, appropriate testing ‘blinds’, and large data sets? 3. How can buildings be pre-screened to identify those that are the most model-predictable, and therefore those whose savings can be calculated with least error? 4. What is the state of public domain models, that is, how well do they perform, and what are the associated implications for whole-building measurement and verification (M&V)? Additional project objectives that were addressed as part of this study include: (1) clarification of the use cases and conditions for baseline modeling performance metrics, benchmarks and evaluation criteria, (2) providing guidance for determining customer suitability for baseline modeling, (3) describing the portfolio level effects of baseline model estimation errors, (4) informing PG&E’s development of EMIS technology product specifications, and (5) providing the analytical foundation for future studies about baseline modeling and saving effects of EMIS technologies. A final objective of this project was to demonstrate the application of the methodology, performance metrics, and test protocols with participating EMIS product vendors.

  13. The Oil Security Metrics Model: A Tool for Evaluating the Prospective Oil Security Benefits of DOE's Energy Efficiency and Renewable Energy R&D Programs

    SciTech Connect (OSTI)

    Greene, David L [ORNL; Leiby, Paul Newsome [ORNL

    2006-05-01

    Energy technology R&D is a cornerstone of U.S. energy policy. Understanding the potential for energy technology R&D to solve the nation's energy problems is critical to formulating a successful R&D program. In light of this, the U.S. Congress requested the National Research Council (NRC) to undertake both retrospective and prospective assessments of the Department of Energy's (DOE's) Energy Efficiency and Fossil Energy Research programs (NRC, 2001; NRC, 2005). ("The Congress continued to express its interest in R&D benefits assessment by providing funds for the NRC to build on the retrospective methodology to develop a methodology for assessing prospective benefits." NRC, 2005, p. ES-2) In 2004, the NRC Committee on Prospective Benefits of DOE's Energy Efficiency and Fossil Energy R&D Programs published a report recommending a new framework and principles for prospective benefits assessment. The Committee explicitly deferred the issue of estimating security benefits to future work. Recognizing the need for a rigorous framework for assessing the energy security benefits of its R&D programs, the DOE's Office of Energy Efficiency and Renewable Energy (EERE) developed a framework and approach for defining energy security metrics for R&D programs to use in gauging the energy security benefits of their programs (Lee, 2005). This report describes methods for estimating the prospective oil security benefits of EERE's R&D programs that are consistent with the methodologies of the NRC (2005) Committee and that build on Lee's (2005) framework. Its objective is to define and implement a method that makes use of the NRC's typology of prospective benefits and methodological framework, satisfies the NRC's criteria for prospective benefits evaluation, and permits measurement of that portion of the prospective energy security benefits of EERE's R&D portfolio related to oil. While the Oil Security Metrics (OSM) methodology described in this report has been specifically developed to estimate the prospective oil security benefits of DOE's R&D programs, it is also applicable to other strategies and policies aimed at changing U.S. petroleum demand.

  14. Synthetic heparin-binding factor analogs

    DOE Patents [OSTI]

    Pena, Louis A. (Poquott, NY); Zamora, Paul O. (Gaithersburg, MD); Lin, Xinhua (Plainview, NY); Glass, John D. (Shoreham, NY)

    2010-04-20

    The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain, and preferably two peptide chains branched from a dipeptide branch moiety composed of two trifunctional amino acid residues, which peptide chain or chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a linker, which may be a hydrophobic linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

  15. Chiral solitons in nuclei: Electromagnetic form factors

    E-Print Network [OSTI]

    Jason R. Smith; Gerald A. Miller

    2004-09-08

    We calculate the electromagnetic form factors of a bound proton. The Chiral Quark-Soliton model provides the quark and antiquark substructure of the proton, which is embedded in nuclear matter. This procedure yields significant modifications of the form factors in the nuclear environment. The sea quarks are almost completely unaffected, and serve to mitigate the valence quark effect. In particular, the ratio of the isoscalar electric to the isovector magnetic form factor decreases by 20% at Q^2=1 GeV^2 at nuclear density, and we do not see a strong enhancement of the magnetic moment.

  16. Factors and Feeds for Supplementing Beef Cows 

    E-Print Network [OSTI]

    Hammack, Stephen P.; Gill, Ronald J.

    2000-05-03

    A beef cow requires energy, protein, minerals and vitamins in its diet. Many factors, including forage quantity and quality and animal body condition, affect the amounts of required nutrients....

  17. Parametrizing Compton form factors with neural networks

    E-Print Network [OSTI]

    Kresimir Kumericki; Dieter Mueller; Andreas Schafer

    2011-12-08

    We describe a method, based on neural networks, of revealing Compton form factors in the deeply virtual region. We compare this approach to standard least-squares model fitting both for a simplified toy case and for HERMES data.

  18. Carbon Dioxide Emission Factors for Coal

    Reports and Publications (EIA)

    1994-01-01

    The Energy Information Administration (EIA) has developed factors for estimating the amount of carbon dioxide emitted, accounting for differences among coals, to reflect the changing "mix" of coal in U.S. coal consumption.

  19. Factors favorable to public participation success

    SciTech Connect (OSTI)

    Peelle, E.; Schweitzer, M.; Munro, J.; Carnes, S.; Wolfe, A.

    1996-05-01

    Categories of factors linked to successful public participation (PP) program outcomes include PP process, organizational context, sociopolitical context, strategic considerations and unique (special circumstances) factors. We re-order the long list factors according to how essential, important, and unique they are and discuss their significance and interrelationships. It is argued that bureacratic structure and operational modes are basically in conflict with features of successful PP programs (openness, two-way education, communication with nonexpert outsiders). If this is so, then it is not surprising that the factors essential for PP success in bureacracies involve extraordinary management efforts by agencies to bypass, compensate for, or overcome structural constraints. We conclude by speculating about the long-term viability of PP practices in the agency setting as well as the consequences for agencies that attempt the problematic task of introducing PP into their complex, mission-oriented organizations.

  20. Factors Involved in Search Dog Training 

    E-Print Network [OSTI]

    Alexander, Michael B.

    2010-07-14

    Events of significant impact as recent as hurricane Ike yielded a consistent disturbing truth: we lack sufficient numbers of competent search dog [Canis familiaris] teams. This study was conceived to provide information in identifying factors...

  1. Distributed naming in a factored operating system

    E-Print Network [OSTI]

    Beckmann, Nathan (Nathan Zachary)

    2010-01-01

    A factored operating system (fos) is a new operating system design for manycore and cloud computers. In fos, OS services are separated from application code and run on distinct cores. Furthermore, each service is split ...

  2. Enabling Factors in Successful Product Development

    E-Print Network [OSTI]

    Tang, Victor

    2005-08-15

    The research literature and industry best-practices report a vast number of enabling factors that contribute to successful product development (PD). Collectively this body of work also establishes the causal linkages between ...

  3. Human Factors of Healthcare Reporting Systems

    E-Print Network [OSTI]

    Johnson, C.W.

    Johnson,C.W. P. Carayon (ed), A Handbook of Human Factors and Ergonomics in Healthcare and Patient Safety, Lawrence Erlbaum, London, UK pp 525-560 Lawrence Erlbaum Associates

  4. On a connection between a class of q-deformed algebras and the Hausdorff derivative in a medium with fractal metric

    E-Print Network [OSTI]

    J. Weberszpil; Matheus Jatkoske Lazo; J. A. Helayël-Neto

    2015-03-04

    Over the recent decades, diverse formalisms have emerged that are adopted to approach complex systems. Amongst those, we may quote the q-calculus in Tsallis' version of Non-Extensive Statistics with its undeniable success whenever applied to a wide class of different systems; Kaniadakis' approach, based on the compatibility between relativity and thermodynamics; Fractional Calculus (FC), that deals with the dynamics of anomalous transport and other natural phenomena, and also some local versions of FC that claim to be able to study fractal and multifractal spaces and to describe dynamics in these spaces by means of fractional differential equations. The question we might ask is whether or not there are common aspects that connect these alternative approaches. In this short communication, we discuss a possible relationship between q-deformed algebras in two different contexts of Statistical Mechanics, namely, the Tsallis' framework and the Kaniadakis' scenario, with local form of fractional-derivative operators defined in fractal media, the so-called Hausdorff derivatives, mapped into a continuous medium with a fractal measure. This connection opens up new perspectives for theories that satisfactorily describe the dynamics for the transport in media with fractal metrics, such as porous or granular media. Possible connections with other alternative definitions of FC are also contempled. Insights on complexity connected to concepts like coarse-grained space-time and physics in general are pointed out.

  5. Proton form factor effects in hydrogenic atoms

    SciTech Connect (OSTI)

    Daza, F. Garcia; Kelkar, N. G.; Nowakowski, M.

    2011-10-21

    The proton structure corrections to the hyperfine splittings in electronic and muonic hydrogen are evaluated using the Breit potential with electromagnetic form factors. In contrast to other methods, the Breit equation with q{sup 2} dependent form factors is just an extension of the standard Breit equation which gives the hyperfine splitting Hamiltonian. Precise QED corrections are comparable to the structure corrections which therefore need to be evaluated ab initio.

  6. Rice Quality Factors: Implications For Management Decisions. 

    E-Print Network [OSTI]

    Grant, Warren R.; Rister, Edward, M.; Brorsen, B. Wade

    1986-01-01

    . Review comments and suggestions from Bill Black, Bart Drees, Arthur Gerlow, Melvin Parker, James Stansel, Mo Way, Bill Webb, and Michael Wohlgenant are also appreciated. A special thanks to Kim Trant for editorial assistance. ... Rice Quality Factors... that grades are intended to measure are red rice, weed seeds, damaged kernels (including peck), off-color, chalk, and off-types of rice kernels. These factors should be negatively related to price, since they are all undesirable characteristics. 1 Graders...

  7. Factors affecting robust retail energy markets

    SciTech Connect (OSTI)

    Michelman, T.S.

    1999-04-01

    This paper briefly defines an active retail market, details the factors that influence market activity and their relative importance, compares activity in various retail energy markets to date, and predicts future retail energy market activity. Three primary factors translate into high market activity: supplier margins, translated into potential savings for actively shopping customers; market size; and market barriers. The author surveys activity nationwide and predicts hot spots for the coming year.

  8. The factor 2 in fundamental physics

    E-Print Network [OSTI]

    Peter Rowlands

    2001-10-24

    A brief history is given of the factor 2, starting in the most elementary considerations of geometry and kinematics of uniform acceleration, and moving to relativity, quantum mechanics and particle physics. The basic argument is that in all the significant cases in which the factor 2 or 1/2 occurs in fundamental physics, whether classical, quantum or relativistic, the same physical operation is taking place.

  9. 16me Confrence Internationale des Linguistes, Paris, 21-25 Juillet 1997 PREFIX T-IN OLD CHINESE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -nip > tsyip and *a nip > nep, both readings: `immobile' zhe2 *a t-nep > tep `immobile' and *b nrep > nrjep. pleasure, cf. section 1) zhe2 *b t-nip > tsyip `immobile'; zhe2 *a t-nep > tep `immobile' (cf. section 1) zhe2 *b t-nep > tsyep `despondent, to fear' (n- indicated by phonetic series) color terms chi *b t

  10. Odd orders in Shor's factoring algorithm

    E-Print Network [OSTI]

    Thomas Lawson

    2015-01-13

    Shor's factoring algorithm (SFA) finds the prime factors of a number, $N=p_1 p_2$, exponentially faster than the best known classical algorithm. Responsible for the speed-up is a subroutine called the quantum order finding algorithm (QOFA) which calculates the order -- the smallest integer, $r$, satisfying $a^r \\mod N =1$, where $a$ is a randomly chosen integer coprime to $N$ (meaning their greatest common divisor is one, $\\gcd(a, N) =1$). Given $r$, and with probability not less than $1/2$, the factors are given by $p_1 = \\gcd (a^{\\frac{r}{2}} - 1, N)$ and $p_2 = \\gcd (a^{\\frac{r}{2}} + 1, N)$. For odd $r$ it is assumed the factors cannot be found (since $a^{\\frac{r}{2}}$ is not generally integer) and the QOFA is relaunched with a different value of $a$. But a recent paper [E. Martin-Lopez: Nat Photon {\\bf 6}, 773 (2012)] noted that the factors can sometimes be found from odd orders if the coprime is square. This raises the question of improving SFA's success probability by considering odd orders. We show that an improvement is possible, though it is small. We present two techniques for retrieving the order from apparently useless runs of the QOFA: not discarding odd orders; and looking out for new order finding relations in the case of failure. In terms of efficiency, using our techniques is equivalent to avoiding square coprimes and disregarding odd orders, which is simpler in practice. Even still, our techniques may be useful in the near future, while demonstrations are restricted to factoring small numbers. The most convincing demonstrations of the QOFA are those that return a non-power-of-two order, making odd orders that lead to the factors attractive to experimentalists.

  11. Pre-Cloud Aerosol, Cloud Droplet Concentration, and Cloud Condensation Nuclei from the VAMOS Ocean-Cloud-Atmosphere Land Study (VOCALS) Field Campaign First Quarter 2010 ASR Program Metric Report

    SciTech Connect (OSTI)

    Kleinman, LI; Springston, SR; Daum, PH; Lee, Y-N; Sedlacek, AJ; Senum, G; Wang, J

    2011-08-31

    In this, the first of a series of Program Metric Reports, we (1) describe archived data from the DOE G-1 aircraft, (2) illustrate several relations between sub-cloud aerosol, CCN, and cloud droplets pertinent to determining the effects of pollutant sources on cloud properties, and (3) post to the data archive an Excel spreadsheet that contains cloud and corresponding sub-cloud data.

  12. Simulating Factorization with a Quantum Computer

    E-Print Network [OSTI]

    Jose Luis Rosales

    2015-05-12

    Modern cryptography is largely based on complexity assumptions, for example, the ubiquitous RSA is based on the supposed complexity of the prime factorization problem. Thus, it is of fundamental importance to understand how a quantum computer would eventually weaken these algorithms. In this paper, one follows Feynman's prescription for a computer to simulate the physics corresponding to the algorithm of factoring a large number $N$ into primes. Using Dirac-Jordan transformation theory one translates factorization into the language of quantum hermitical operators, acting on the vectors of the Hilbert space. This leads to obtaining the ensemble of factorization of $N$ in terms of the Euler function $\\varphi(N)$, that is quantized. On the other hand, considering $N$ as a parameter of the computer, a Quantum Mechanical Prime Counting Function $\\pi_{QM}(x)$, where $x$ factorizes $N$, is derived. This function converges to $\\pi(x)$ when $N\\gg x$. It has no counterpart in analytic number theory and its derivation relies on semiclassical quantization alone.

  13. Chiral extrapolation of nucleon magnetic form factors

    SciTech Connect (OSTI)

    P. Wang; D. Leinweber; A. W. Thomas; R.Young

    2007-04-01

    The extrapolation of nucleon magnetic form factors calculated within lattice QCD is investigated within a framework based upon heavy baryon chiral effective-field theory. All one-loop graphs are considered at arbitrary momentum transfer and all octet and decuplet baryons are included in the intermediate states. Finite range regularization is applied to improve the convergence in the quark-mass expansion. At each value of the momentum transfer (Q{sup 2}), a separate extrapolation to the physical pion mass is carried out as a function of m{sub {pi}} alone. Because of the large values of Q{sup 2} involved, the role of the pion form factor in the standard pion-loop integrals is also investigated. The resulting values of the form factors at the physical pion mass are compared with experimental data as a function of Q{sup 2} and demonstrate the utility and accuracy of the chiral extrapolation methods presented herein.

  14. Human factors in nuclear technology - a history

    SciTech Connect (OSTI)

    Jones, D.B. )

    1992-01-01

    Human factors, human factors engineering (HFE), or ergonomics did not receive much formal attention in nuclear technology prior to the Three Mile Island Unit 2 (TMI-2) incident. Three principal reasons exist for this lack of concern. First, emerging technologies show little concern with how people will use a new system. Making the new technology work is considered more important than the people who will use it. Second, the culture of the users of nuclear power did not recognize a need for human factors. Traditional utilities had well established and effective engineering designs for control of electric power generation, while medicine considered the use of nuclear isotopes another useful tool, not requiring special ergonomics. Finally, the nuclear industry owed much to Admiral Rickover. He was definitely opposed.

  15. Hadronic form factors in kaon photoproduction

    SciTech Connect (OSTI)

    Syukurilla, L. Mart, T.

    2014-09-25

    We have revisited the effect of hadronic form factors in kaon photoproduction process by utilizing an isobaric model developed for kaon photoproduction off the proton. The model is able to reproduce the available experimental data nicely as well as to reveal the origin of the second peak in the total cross section, which was the main source of confusion for decades. Different from our previous study, in the present work we explore the possibility of using different hadronic form factors in each of the K?N vertices. The use of different hadronic form factors, e.g. dipole, Gaussian, and generalized dipole, has been found to produce a more flexible isobar model, which can provide a significant improvement in the model.

  16. Human factors challenges for advanced process control

    SciTech Connect (OSTI)

    Stubler, W.F.; O`Hara, J..M.

    1996-08-01

    New human-system interface technologies provide opportunities for improving operator and plant performance. However, if these technologies are not properly implemented, they may introduce new challenges to performance and safety. This paper reports the results from a survey of human factors considerations that arise in the implementation of advanced human-system interface technologies in process control and other complex systems. General trends were identified for several areas based on a review of technical literature and a combination of interviews and site visits with process control organizations. Human factors considerations are discussed for two of these areas, automation and controls.

  17. Unidentified factors in the nutrition of chickens 

    E-Print Network [OSTI]

    Dieckert, Julius Walter

    1951-01-01

    of the factor were described? The factor was found to be stable to heat and acid, Xn fact? ths activity of liver?L" wac increased several?4'oi14 by autoclaving at pH 1 for thirty xdxxutes? RecentIy? Tovs& Lslor+ and RLvsbgem {'%) reported that mink required...~ The idea was expressed explicitly by Hapson ('3&? '33) and hy ByerIy et aI ('33) ~ Hapson in working with rats found that these animals required something associated with animal protein for normal growthI unfortunate+? he did not con~us the study, ByurIy...

  18. Momentum compaction and phase slip factor

    SciTech Connect (OSTI)

    Ng, K.Y.; /Fermilab

    2010-10-01

    Section 2.3.11 of the Handbook of Accelerator Physics and Engineering on Landau damping is updated. The slip factor and its higher orders are given in terms of the various orders of the momentum compaction. With the aid of a simplified FODO lattice, formulas are given for the alteration of the lower orders of the momentum compaction by various higher multipole magnets. The transition to isochronicity is next demonstrated. Formulas are given for the extraction of the first three orders of the slip factor from the measurement of the synchrotron tune while changing the rf frequency. Finally bunch-length compression experiments in semi-isochronous rings are reported.

  19. Annotated bibliography of human factors applications literature

    SciTech Connect (OSTI)

    McCafferty, D.B.

    1984-09-30

    This bibliography was prepared as part of the Human Factors Technology Project, FY 1984, sponsored by the Office of Nuclear Safety, US Department of Energy. The project was conducted by Lawrence Livermore National Laboratory, with Essex Corporation as a subcontractor. The material presented here is a revision and expansion of the bibliographic material developed in FY 1982 as part of a previous Human Factors Technology Project. The previous bibliography was published September 30, 1982, as Attachment 1 to the FY 1982 Project Status Report.

  20. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01

    Daylighting and energy saving Electric lighting energy usefor predicting energy savings from photo-electric control ofelectric lighting displacement, rather than predicting ?nal energy savings.