National Library of Energy BETA

Sample records for utilize approximately two-thirds

  1. Fact #756: December 3, 2012 Midwest Produces Two-Thirds of All Light Vehicles

    Broader source: Energy.gov [DOE]

    Although there are many new vehicle assembly plants located in the South, the Midwest region continues to produce about two-thirds of all light vehicles. The year 2009 was the low point for vehicle...

  2. Fact #834: August 18, 2014 About Two-Thirds of Transportation Energy Use is Gasoline for Light Vehicles – Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Fact #834: About Two-Thirds of Transportation Energy Use is Gasoline for Light Vehicles

  3. Determination of the approximate relative biological effectiveness (RBE) of fast neutrons, utilizing the oral mucosa of dogs as the biological indicator 

    E-Print Network [OSTI]

    Roberts, Royce Elisha

    1975-01-01

    as well as the total radiation intensity (total dose and fractionation scheme). The oral mucosa lends itself to direct visual1zation and coupled with its predictable response to radia- tion has frequently been used as an indicator for irradiated tis.../10 of the total dose delivered (ie, 400 and 425 rads, respectively). The dose rate for the Cobalt-60 treatments was approximately 43 rads/minute, and the treatment field was 4 X 6 cm for all 4 dogs. The source-skin distance (SSD) was 80 cm. (See Table 1...

  4. APPROXIMATION NONSYMMETRIC

    E-Print Network [OSTI]

    Chuan, Toh Kim

    for the Degree of Doctor of Philosophy by Kim Chuan Toh August 1996 c fl Kim Chuan Toh 1996 ALL RIGHTS RESERVED #12; MATRIX APPROXIMATION PROBLEMS AND NONSYMMETRIC ITERATIVE METHODS Kim Chuan Toh, Ph.D. Cornell

  5. Asymptotic utility-based pricing and hedging for exponential utility

    E-Print Network [OSTI]

    Kallsen, Jan

    Asymptotic utility-based pricing and hedging for exponential utility Jan Kallsen Christian deals with pricing and hedging based on utility indifference for exponential utility. We consider order approximation the utility indifference price and the corresponding hedge can be determined from

  6. Multivariate approximation Robert Schaback

    E-Print Network [OSTI]

    Schaback, Robert

    Multivariate approximation Robert Schaback July 30, 2013 1 Synonyms Approximation by functions Approximations of functions are multivariate, if they replace functions of n 2 variables defined on a domain. 4 Overview Multivariate approximation is an extension of Approximation Theory and Approximation

  7. Fast Approximate Convex Decomposition 

    E-Print Network [OSTI]

    Ghosh, Mukulika

    2012-10-19

    Approximate convex decomposition (ACD) is a technique that partitions an input object into "approximately convex" components. Decomposition into approximately convex pieces is both more efficient to compute than exact ...

  8. Approximate Information Theory

    E-Print Network [OSTI]

    Penny, Will

    Approximate Inference Will Penny Information Theory Information Entropy Kullback-Liebler Divergence Approximate Inference Will Penny 31st March 2011 #12;Approximate Inference Will Penny Information Theory Will Penny Information Theory Information Entropy Kullback-Liebler Divergence Gaussians Asymmetry

  9. features Utility Generator

    E-Print Network [OSTI]

    Chang, Shih-Fu

    #12;#12;#12;#12;features function utility Training Pool Utility Generator Per-frame function content utility classes utility classes utility Tree Decision Generator Module Utility Clustering Adaptive

  10. Approximations non-recursively

    E-Print Network [OSTI]

    Ábrahám, Erika

    ) * x Regard non-recursively de#12;ned approximations fact 0 = nx -> bot fact 1 = nx -> if x else fact 0 (x 1) #3; x fact 2 = nx -> if x fact of fact should satisfy the de#12;ning equation fact = nx -> if x

  11. Federal Utility Partnership Working Group Utility Partners

    Broader source: Energy.gov [DOE]

    Federal Utility Partnership Working Group (FUPWG) utility partners are eager to work closely with Federal agencies to help achieve energy management goals.

  12. Federal Utility Partnership Working Group - Utility Interconnection...

    Energy Savers [EERE]

    Federal Utility Partnership Working Group (FUPWG) meeting-discusses solarphotovoltaic (PV) projects to connect with utility in California and their issues. fupwgfall12jewell.pd...

  13. utility functions scaling profiles utility-fair

    E-Print Network [OSTI]

    Chang, Shih-Fu

    bandwidth utility functions scaling profiles utility-fair I. INTRODUCTION The emerging MPEG-4 video. This can result in a significant increase in the utilization of network capacity [1]. These techniques. Bandwidth utility functions [9] can be used to characterize an application's capability to adapt over

  14. Utilization Analysis Page 1 UTILIZATION ANALYSIS

    E-Print Network [OSTI]

    Oliver, Douglas L.

    Utilization Analysis Page 1 UTILIZATION ANALYSIS Section 46a-68-40 and HIRING/PROMOTION GOALS utilized in the Health Center's workforce, the numbers of protected classes in the workforce must conducted for each occupational category and position classification. The Utilization Analysis was performed

  15. NET PRED UTILITY

    Energy Science and Technology Software Center (OSTI)

    002602IBMPC00 Normalized Elution Time Prediction Utility  http://omics.pnl.gov/software/NETPredictionUtility.php 

  16. Utility Theory Social Intelligence

    E-Print Network [OSTI]

    Polani, Daniel

    Utility Theory Social Intelligence Daniel Polani Utility Theory ­ p.1/15 Utilities: Motivation Consider: game scenario For Instance: 2-or-more players Necessary: development of concept for utilities decisions sequential decisions (time) games Utility The Prototypical Scenario Consider: agent that can take

  17. A Case Study of Danville Utilities: Utilizing Industrial Assessment...

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

    Study of Danville Utilities: Utilizing Industrial Assessment Centers to Provide Energy Efficiency Resources for Key Accounts A Case Study of Danville Utilities: Utilizing...

  18. Approximation Algorithms for Covering Problems

    E-Print Network [OSTI]

    Koufogiannakis, Christos

    2009-01-01

    1.3.1 Sequential Algorithms . . . . . . . . . . . . .Distributed 2-approximation algorithm for CMIP 2 (Alg.2 Sequential Algorithm 2.1 The Greedy Algorithm for Monotone

  19. Approximate circuits for increased reliability

    DOE Patents [OSTI]

    Hamlet, Jason R.; Mayo, Jackson R.

    2015-12-22

    Embodiments of the invention describe a Boolean circuit having a voter circuit and a plurality of approximate circuits each based, at least in part, on a reference circuit. The approximate circuits are each to generate one or more output signals based on values of received input signals. The voter circuit is to receive the one or more output signals generated by each of the approximate circuits, and is to output one or more signals corresponding to a majority value of the received signals. At least some of the approximate circuits are to generate an output value different than the reference circuit for one or more input signal values; however, for each possible input signal value, the majority values of the one or more output signals generated by the approximate circuits and received by the voter circuit correspond to output signal result values of the reference circuit.

  20. Utility Cost Analysis 

    E-Print Network [OSTI]

    Horn, S.

    1984-01-01

    One of the first steps in setting up an energy management program in a commercial building is determining operating costs per energy consuming system through a utility cost analysis. This paper illustrates utility cost analysis methods used...

  1. Avista Utilities- Net Metering

    Broader source: Energy.gov [DOE]

    For Avista Utilities customers, any net excess generation (NEG) during a monthly billing period is credited to the customer's next bill at the utility's retail rate. At the beginning of each ca...

  2. Enhanced Customer/Utility Relations Through an EPRI Assisted Project 

    E-Print Network [OSTI]

    Bailey, H.

    1995-01-01

    for gasoline. These capabilities will enhance the competitiveness of Atlas and position the refinery for future production of reformulated gasoline. For the electric utility, SWEPCO, the changes to the plant will yield approximately 10MW of additional...

  3. Electrical utilities relay settings

    SciTech Connect (OSTI)

    HACHE, J.M.

    1999-02-24

    This document contains the Hanford transmission and distribution system relay settings that are under the control of Electrical Utilities.

  4. Approximate Graph Products Marc Hellmutha

    E-Print Network [OSTI]

    Stadler, Peter F.

    Approximate Graph Products Marc Hellmutha , Wilfried Imrichb , Werner Kl¨ocklb , Peter F. Stadlera or fingers) can vary independently of other traits, or Email addresses: marc@bioinf.uni-leipzig.de (Marc

  5. APPROXIMATELY UNITARILY EQUIVALENT MORPHISMS AND ...

    E-Print Network [OSTI]

    2010-07-28

    ?(a) = diag(a(x)1,...,a(xk)), then we say that ? and ? are approximately unitarily ... Mr?1(C(X)) and a unital ?-homomorphism µ : C(X) ? Mr(C(X)) with finite.

  6. "List of Covered Electric Utilities" under the Public Utility...

    Office of Environmental Management (EM)

    6 Revised "List of Covered Electric Utilities" under the Public Utility Regulatory Policies Act of 1978 (PURPA) - 2006 Revised Under Title I of the Public Utility Regulatory...

  7. Carrots for Utilities: Providing Financial Returns for Utility...

    Open Energy Info (EERE)

    Carrots for Utilities: Providing Financial Returns for Utility Investments in Energy Efficiency Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Carrots for Utilities:...

  8. 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

  9. Electric Utility Industry Update

    Broader source: Energy.gov [DOE]

    Presentation—given at the April 2012 Federal Utility Partnership Working Group (FUPWG) meeting—covers significant electric industry trends and industry priorities with federal customers.

  10. Resources for Utility Regulators

    SciTech Connect (OSTI)

    SEE Action

    2012-06-01

    Provides a summary of State and Local Energy Efficiency Action Network (SEE Action) information resources available to utility regulators, organized by topic.

  11. Utility Service Renovations

    Broader source: Energy.gov [DOE]

    Any upgrade to utility service provides an opportunity to revisit a Federal building's electrical loads and costs, but it also may provide an economic way to bundle the upgrade with an onsite renewable electricity project during renovation. Upgrading utility service to the site may involve improving or adding a transformer, upgrading utility meters, or otherwise modifying the interconnection equipment or services with the utility. In some cases, the upgrade may change the tariff structure for the facility and may qualify the property for a different structure with lower overall costs. In all cases, the implementation of renewable energy technologies should be identified during the design phase.

  12. Planning numerical approximations Richard Power

    E-Print Network [OSTI]

    Williams, Sandra

    Planning numerical approximations Richard Power Sandra Williams 21st September 2009 #12;Table proportions (e.g., more than a quarter, 25.9 per cent) Proportions are a convenient well-defined subproblem Common in factual discourse (e.g., newspaper articles) Important for generating from data (but neglected

  13. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    -Milwaukee, P.O. Box 784, Milwaukee, WI 53201 d Project Manager, Illinois Clean Coal Institute * Director UWM products containing clean coal ash compared to conventional coal ash. Utilization of clean coal ash is much products that utilize clean coal ash. With increasing federal regulations on power plant emissions, finding

  14. WOOD PRODUCTS AND UTILIZATION

    E-Print Network [OSTI]

    WOOD PRODUCTS AND UTILIZATION V #12;#12;443USDA Forest Service Gen. Tech. Rep. PSW-GTR-160. 1997. Section Overview Wood Products and Utilization1 John R. Shelly2 Forests are obviously a very important asset to California, and their economic and social value to the state is well documented. Wood

  15. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization USE OF CLASS F FLY ASH AND CLEAN-COAL ASH BLENDS FOR CAST OF CLASS F FLYASHAND CLEAN-COAL ASHBLENDS FOR CAST CONCRETE PRODUCTS Authors: TarunR.Naik, Director, Center,Illinois Clean Coal Institute RudolphN.Kraus, Research Associate, UWM Center forBy-Products Utilization Shiw S

  16. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    dioxide control technologies. Figure 1 shows clean coal technology benefits(2) . In 1977, the conceptCenter for By-Products Utilization CLEAN COAL BY-PRODUCTS UTILIZATION IN ROADWAY, EMBANKMENTS electricity production is from the use of coal-based technologies(1) . This production is estimated

  17. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    clean coal technology, are not extensively utilized in the cast concrete masonry products (bricks both conventional and clean coal technologies. A clean coal ash is defined as the ash derived from SO2Center for By-Products Utilization USE OF CLASS F FLY ASH AND CLEAN-COAL ASH BLENDS FOR CAST

  18. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    combustion by-products #12;3 generated by using both conventional and clean-coal technologies. A clean-coal that obtained from clean-coal technology, are not utilized in cast-concrete masonry products (bricks, blocksCenter for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik

  19. On Resource Allocation in Fading Multiple Access Channels -An Efficient Approximate Projection

    E-Print Network [OSTI]

    Médard, Muriel

    and power allocation policies that maximize a general concave utility function of average transmission rates] consider allocation of rate and power to maximize a linear utility function of the transmission rates over1 On Resource Allocation in Fading Multiple Access Channels - An Efficient Approximate Projection

  20. Approximation Algorithms for Wireless Link Scheduling with Flexible Data Rates

    E-Print Network [OSTI]

    Kesselheim, Thomas

    2012-01-01

    We consider scheduling problems in wireless networks with respect to flexible data rates. That is, more or less data can be transmitted per time depending on the signal quality, which is determined by the signal-to-interference-plus-noise ratio (SINR). Each wireless link has a utility function mapping SINR values to the respective data rates. We have to decide which transmissions are performed simultaneously and (depending on the problem variant) also which transmission powers are used. In the capacity-maximization problem, one strives to maximize the overall network throughput, i.e., the summed utility of all links. For arbitrary utility functions (not necessarily continuous ones), we present an O(log n)-approximation when having n communication requests. This algorithm is built on a constant-factor approximation for the special case of the respective problem where utility functions only consist of a single step. In other words, each link has an individual threshold and we aim at maximizing the number of lin...

  1. Utility Access Questionnaire | Utility Access Questionnaire

    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 EISTJThin FilmUnited States:UserLabor CommissionPage EditUtilities

  2. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    -Products Utilization E-mail: ymchun@uwm.edu and F. D. Botha Project Manager, Illinois Clean Coal Institute 5776 Coal, University of Wisconsin-Milwaukee, Milwaukee, WI, USA. 4 Project Manager, Illinois Clean Coal Institute

  3. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization DRAFT REPORT CARBON DIOXIDE SEQUESTRATION IN CEMENTITIOUS-MILWAUKEE #12;CARBON DIOXIDE SEQUESTRATION IN CEMENTITIOUS PRODUCTS Progress Report by Tarun R. Naik, Rakesh of Carbon Dioxide Sequestration Technologies

  4. Utility and Industrial Partnerships 

    E-Print Network [OSTI]

    Sashihara, T. F.

    1989-01-01

    In the past decade, many external forces have shocked both utilities and their large industrial customers into seeking more effective ways of coping and surviving. One such way is to develop mutually beneficial partnerships optimizing the use...

  5. Cogeneration - A Utility Perspective 

    E-Print Network [OSTI]

    Williams, M.

    1983-01-01

    Cogeneration has become an extremely popular subject when discussing conservation and energy saving techniques. One of the key factors which effect conservation is the utility viewpoint on PURPA and cogeneration rule making. These topics...

  6. Iraq and the utilities

    SciTech Connect (OSTI)

    Studness, C.M.

    1990-09-13

    This article discusses the possible impact on the public utilities of the invasion of Kuwait by Iraq. The author feels the industry is in better shape to weather this than the energy crisis of 1973 and 1974. However regulatory policies that prohibit some utilities from recovering fuel costs through rate adjustments may cause distress for some. The author feels that a revision of regulatory policies is needed.

  7. "List of Covered Electric Utilities" under the Public Utility...

    Energy Savers [EERE]

    8 "List of Covered Electric Utilities" under the Public Utility Regulatory Policies Act of 1978 (PURPA) - 2008 Under Title I of the Public Utility Regulatory Policies Act of 1978...

  8. "List of Covered Electric Utilities" under the Public Utility...

    Office of Environmental Management (EM)

    9 "List of Covered Electric Utilities" under the Public Utility Regulatory Policies Act of 1978 (PURPA) - 2009 Under Title I, Sec. 102(c) of the Public Utility Regulatory Policies...

  9. Linear Value Function Approximation Linear Models

    E-Print Network [OSTI]

    Parr, Ronald

    Linear Value Function Approximation and Linear Models Ronald Parr Duke University Joint work terminology · Various forms of linear value function approximation · Linear approximate model formulation #12;Outline · Introduce terminology · Various forms of linear value function approximation · Linear

  10. LUBRICATION APPROXIMATION WITH PRESCRIBED NONZERO CONTACT ANGLE

    E-Print Network [OSTI]

    Otto, Felix

    LUBRICATION APPROXIMATION WITH PRESCRIBED NONZERO CONTACT ANGLE Felix Otto Department--time existence for a weak solution s(t; x) â?? 0 of the lubrication approximation @ t s + @ x (s @ 3 x s) = 0 in fs will later motivate the way we construct approximate solutions for the lubrication approximation we are going

  11. Inherent Individual Differences in Utility

    E-Print Network [OSTI]

    Luce, R. Duncan

    2011-01-01

    Press. Luce, R. D. (2000). Utility of Gains and Losses.Interpersonal comparisons of utility for 2 of 3 types ofInterpersonal comparisons of utility: why and how they are

  12. Utility View of Risk Assessment 

    E-Print Network [OSTI]

    Bickham, J.

    1985-01-01

    This paper will address a utility perspective in regard to risk assessment, reliability, and impact on the utility system. Discussions will also include the critical issues for utilities when contracting for energy and capacity from cogenerators...

  13. Utility Power Plant Construction (Indiana)

    Broader source: Energy.gov [DOE]

    This statute requires a certificate of necessity from the Indiana Utility Regulatory Commission for the construction, purchase, or lease of an electricity generation facility by a public utility.

  14. Utility Community Solar Handbook- Understanding and Supporting Utility Program Development

    Broader source: Energy.gov [DOE]

    The "Utility Community Solar Handbook: Understanding and Supporting Utility Program Development" provides the utility's perspective on community solar program development and is a resource for government officials, regulators, community organizers, solar energy advocates, non-profits, and interested citizens who want to support their local utilities in implementing projects.

  15. Utility spot pricing, California

    E-Print Network [OSTI]

    Schweppe, Fred C.

    1982-01-01

    The objective of the present spot pricing study carried out for SCE and PG&E is to develop the concepts which wculd lead to an experimental design for spot pricing in the two utilities. The report suggests a set of experiments ...

  16. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization HIGH-STRENGTH HVFA CONCRETE CONTAINING CLEAN COAL ASH By Tarun R #12;1 HIGH-STRENGTH HVFA CONCRETE CONTAINING CLEAN COAL ASH By Tarun R. Naik, Shiw S. Singh, and Bruce for manufacture of cement-based products using ashes generated from combustion of high-sulfur coals. A clean coal

  17. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization USE OF CLEAN COAL ASH AS SETTING TIME REGULATOR IN PORTLAND OF WISCONSIN ­ MILWAUKEE #12;2 Use of Clean Coal Ash as Setting Time Regulator in Portland Cement by Zichao Wu as setting time regulator for portland cement production. In this paper a source of clean coal ash (CCA

  18. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization CHARACTERIZATION AND APPLICATION OF CLASSF FLY ASHCOAL AND CLEAN-COAL #12;-1- CHARACTERIZATION AND APPLICATION OF CLASSF FLYASHCOAL AND CLEAN-COAL ASHFOR CEMENT -Milwaukee (UWM) Daniel D.Banerjee, Project Manager,Illinois Clean Coal Institute RudolphN.Kraus, Research

  19. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    CONTAINING CLEAN-COAL ASH AND CLASS F FLY ASH By Tarun R. Naik, Rudolph N. Kraus, Rafat Siddique of HVFA Concrete Containing Clean-Coal Ash and Class F Fly Ash By Tarun R. Naik Director, UWM Center for By-Products Utilization and Francois Botha Project Manager, Illinois Clean Coal Institute Synopsis

  20. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization USE OF CLEAN-COAL ASH FOR MANAGING ASR By Zichao Wu and Tarun R College of Engineering and Applied Science THE UNIVERSITY OF WISCONSIN­MILWAUKEE #12;USE OF CLEAN-COAL ASH combustion by-products (such as clean-coal ash) from power plants. Maximum recycling of such by- products

  1. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Center for By-Products Utilization CARBON DIOXIDE SEQUESTRATION IN NO-FINES CONCRETE By Tarun R;CARBON DIOXIDE SEQUESTRATION IN NO-FINES CONCRETE ABSTRACT By Tarun, R. Naik, Yoon-moon Chun, Rudolph N. Kraus, and Fethullah Canpolat This paper presents a detailed experimental study on the sequestration

  2. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    flue gas. Detailed results are presented. Keywords: carbon dioxide sequestration, carbonation, carbonCenter for By-Products Utilization CO2 SEQUESTRATION IN FOAMED CONTROLLED LOW STRENGTH MATERIALS #12;1 CO2 SEQUESTRATION IN FOAMED CONTROLLED LOW STRENGTH MATERIALS by Tarun R. Naik, Rudolph N. Kraus

  3. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    technologies. A clean-coal ash is defined as the ash derived from SOxand NOxcontrol technologies, and FBC that obtained from clean-coal technology, are not utilized in cast-concrete masonry products (bricks, blocks conventional and clean-coal technologies. Fifteen high-sulfur coal ash samples were obtained from eight

  4. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    Issued to the Illinois Clean Coal Institute For Project 02-1/3.1D-2 Department of Civil Engineering of technology and market development for controlled low-strength material (CLSM) slurry using Illinois coal ashCenter for By-Products Utilization IMPLEMENTATION OF FLOWABLE SLURRY TECHNOLOGY IN ILLINOIS

  5. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    wood with supplementary fuels such as coal, oil, natural gas, and coke by pulp and paper mills and wood, knots, chips, etc. with other supplementary fuels such as coal, oil, natural gas, and coke to generateCenter for By-Products Utilization DEVELOPMENT OF CLSM USING COAL ASH AND WOOD ASH, A SOURCE OF NEW

  6. By-Products Utilization

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    with supplementary fuels such as coal, oil, natural gas, and coke by pulp and paper mills and wood, such as bark, twigs, knots, chips, etc. with other supplementary fuels such as coal, oil, natural gas, and cokeCenter for By-Products Utilization CLSM CONTAINING MIXTURES OF COAL ASH AND A NEW POZZOLANIC

  7. Industrial - Utility Cogeneration Systems 

    E-Print Network [OSTI]

    Harkins, H. L.

    1979-01-01

    electric utility power plant, considerable energy is wasted in the form of heat rejection to the atmosphere thru cooling towers, ponds or lakes, or to rivers. In a cogeneration system heat rejection can be minimized by systems which apply the otherwise...

  8. STEP Utility Data Release Form

    Broader source: Energy.gov [DOE]

    STEP Utility Data Release Form, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  9. STEP Utility Bill Analysis Report

    Broader source: Energy.gov [DOE]

    STEP Utility Bill Analysis Report, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  10. Bond selective chemistry beyond the adiabatic approximation

    SciTech Connect (OSTI)

    Butler, L.J. [Univ. of Chicago, IL (United States)

    1993-12-01

    One of the most important challenges in chemistry is to develop predictive ability for the branching between energetically allowed chemical reaction pathways. Such predictive capability, coupled with a fundamental understanding of the important molecular interactions, is essential to the development and utilization of new fuels and the design of efficient combustion processes. Existing transition state and exact quantum theories successfully predict the branching between available product channels for systems in which each reaction coordinate can be adequately described by different paths along a single adiabatic potential energy surface. In particular, unimolecular dissociation following thermal, infrared multiphoton, or overtone excitation in the ground state yields a branching between energetically allowed product channels which can be successfully predicted by the application of statistical theories, i.e. the weakest bond breaks. (The predictions are particularly good for competing reactions in which when there is no saddle point along the reaction coordinates, as in simple bond fission reactions.) The predicted lack of bond selectivity results from the assumption of rapid internal vibrational energy redistribution and the implicit use of a single adiabatic Born-Oppenheimer potential energy surface for the reaction. However, the adiabatic approximation is not valid for the reaction of a wide variety of energetic materials and organic fuels; coupling between the electronic states of the reacting species play a a key role in determining the selectivity of the chemical reactions induced. The work described below investigated the central role played by coupling between electronic states in polyatomic molecules in determining the selective branching between energetically allowed fragmentation pathways in two key systems.

  11. An approximation technique for jet impingement flow

    SciTech Connect (OSTI)

    Najafi, Mahmoud; Fincher, Donald; Rahni, Taeibi; Javadi, KH.; Massah, H.

    2015-03-10

    The analytical approximate solution of a non-linear jet impingement flow model will be demonstrated. We will show that this is an improvement over the series approximation obtained via the Adomian decomposition method, which is itself, a powerful method for analysing non-linear differential equations. The results of these approximations will be compared to the Runge-Kutta approximation in order to demonstrate their validity.

  12. Low rank approximations of matrices and tensors

    E-Print Network [OSTI]

    Friedland, Shmuel

    Low rank approximations of matrices and tensors S. Friedland, V. Mehrmann, A. Miedlar and M, 2008 S. Friedland, V. Mehrmann, A. Miedlar and M. Nkengla Low rank approximations of matrices and tensors #12;Overview S. Friedland, V. Mehrmann, A. Miedlar and M. Nkengla Low rank approximations

  13. Utilities building NGV infrastructure

    SciTech Connect (OSTI)

    Not Available

    1994-04-01

    Gas utilities across the US are aggressively pursuing the natural gas vehicle market by putting in place the infrastructure needed to ensure the growth of the important market. The first annual P and GJ NGV Marketing Survey has revealed many utilities plant to build and continue building NGV fueling facilities. The NGV industry in the US is confronting a classic chicken-or-egg quandary. Fleet operators and individual drivers are naturally unwilling to commit to a natural gas vehicle fuel until sufficient fueling facilities are in place, yet service station operators are reluctant to add NGV refueling capacity until enough CNG vehicles are on the road to create demand. The future of the NGV market is bright, but continued research and product improvements by suppliers as well as LDCs is needed if the potential is to be fulfilled. Advances in refueling facilities must continue if the market is to develop.

  14. Utilization of gram polynomials in approximating the solution to certain differential equations 

    E-Print Network [OSTI]

    Langston, Robert Quinn

    1964-01-01

    DNWN DO 3 L3?2, 11 Bl?L3 L4?L3-1 B(L3&1)?B(L4&1)+Bl DO 2 LL2 3, 11 LL3?LL2-1 C2?LL2 2 B91, LL2) B(1&LL3) 02 8 DN1?N LL9 LL1-1 DO 6 M=2, LL1 E LL1+M-2 F=LLIW+1 KM-I CT+M-1 H?K&&&&2 A(M & I ) =( (H&&F?A(K & I) )/H)/(DNI ) 6 DN1 DN2WT LI... OF ITH ORDER GRAM POLYNOMIALS D DIMENSION A(11&11)&B(11&11)&G(11&26)&Z(15) 400 FORMAT 1H1) 500 FORMAT 5F12. 8) 600 FORMAT 2I12) WRITE OUTPUT TAPE 6, 400 READ INPUT TAPE 5&600, N, I NP 1M+ 1 DO 815 Il 1, 11 DO 815 I2?1, 11 D 815 A(11&12)W. LL1...

  15. Federal Utility Partnership Working Group- Utility Interconnection Panel

    Broader source: Energy.gov [DOE]

    Presentation—given at at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting—discusses solar/photovoltaic (PV) projects to connect with utility in California and their issues.

  16. Utility Partnership Webinar Series: State Mandates for Utility Energy Efficiency

    Broader source: Energy.gov [DOE]

    This webinar highlights state mandates from throughout the country, and how they’ve influenced utility industrial energy efficiency programs.

  17. Time functions as utilities

    E-Print Network [OSTI]

    E. Minguzzi

    2009-09-04

    Every time function on spacetime gives a (continuous) total preordering of the spacetime events which respects the notion of causal precedence. The problem of the existence of a (semi-)time function on spacetime and the problem of recovering the causal structure starting from the set of time functions are studied. It is pointed out that these problems have an analog in the field of microeconomics known as utility theory. In a chronological spacetime the semi-time functions correspond to the utilities for the chronological relation, while in a K-causal (stably causal) spacetime the time functions correspond to the utilities for the K^+ relation (Seifert's relation). By exploiting this analogy, we are able to import some mathematical results, most notably Peleg's and Levin's theorems, to the spacetime framework. As a consequence, we prove that a K-causal (i.e. stably causal) spacetime admits a time function and that the time or temporal functions can be used to recover the K^+ (or Seifert) relation which indeed turns out to be the intersection of the time or temporal orderings. This result tells us in which circumstances it is possible to recover the chronological or causal relation starting from the set of time or temporal functions allowed by the spacetime. Moreover, it is proved that a chronological spacetime in which the closure of the causal relation is transitive (for instance a reflective spacetime) admits a semi-time function. Along the way a new proof avoiding smoothing techniques is given that the existence of a time function implies stable causality, and a new short proof of the equivalence between K-causality and stable causality is given which takes advantage of Levin's theorem and smoothing techniques.

  18. Tribal Utility Feasibility Study

    SciTech Connect (OSTI)

    Engel, R. A.; Zoellick, J. J.

    2007-06-30

    The Schatz Energy Research Center (SERC) assisted the Yurok Tribe in investigating the feasibility of creating a permanent energy services program for the Tribe. The original purpose of the DOE grant that funded this project was to determine the feasibility of creating a full-blown Yurok Tribal electric utility to buy and sell electric power and own and maintain all electric power infrastructure on the Reservation. The original project consultant found this opportunity to be infeasible for the Tribe. When SERC took over as project consultant, we took a different approach. We explored opportunities for the Tribe to develop its own renewable energy resources for use on the Reservation and/or off-Reservation sales as a means of generating revenue for the Tribe. We also looked at ways the Tribe can provide energy services to its members and how to fund such efforts. We identified opportunities for the development of renewable energy resources and energy services on the Yurok Reservation that fall into five basic categories: • Demand-side management – This refers to efforts to reduce energy use through energy efficiency and conservation measures. • Off-grid, facility and household scale renewable energy systems – These systems can provide electricity to individual homes and Tribal facilities in areas of the Reservation that do not currently have access to the electric utility grid. • Village scale, micro-grid renewable energy systems - These are larger scale systems that can provide electricity to interconnected groups of homes and Tribal facilities in areas of the Reservation that do not have access to the conventional electric grid. This will require the development of miniature electric grids to serve these interconnected facilities. • Medium to large scale renewable energy development for sale to the grid – In areas where viable renewable energy resources exist and there is access to the conventional electric utility grid, these resources can be developed and sold to the wholesale electricity market. • Facility scale, net metered renewable energy systems – These are renewable energy systems that provide power to individual households or facilities that are connected to conventional electric utility grid.

  19. Utilize Available Resources

    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 RoomPreservationBio-Inspired SolarAbout /Two0 -Using supercritical carbon dioxide as aGraphsUtilize

  20. Utilities | 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 EISTJThin FilmUnited States:UserLabor CommissionPage EditUtilities Jump

  1. Utilize Available Resources

    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 AdministrationRobust,Field-effectWorking WithTelecentric viewing system forPortal BuildingProjectUtilize

  2. Utility spot pricing study : Wisconsin

    E-Print Network [OSTI]

    Caramanis, Michael C.

    1982-01-01

    Spot pricing covers a range of electric utility pricing structures which relate the marginal costs of electric generation to the prices seen by utility customers. At the shortest time frames prices change every five ...

  3. CONSORTIUM FOR CLEAN COAL UTILIZATION

    E-Print Network [OSTI]

    Subramanian, Venkat

    CONSORTIUM FOR CLEAN COAL UTILIZATION Call for Proposals Date of Issue: July 29, 2013 The Consortium for Clean Coal Utilization (CCCU) at Washington University in St. Louis was established in January of Clean Coal Utilization. The format may be a conference or workshop, or a seminar given by a leading

  4. Near approximations via general ordered topological spaces

    E-Print Network [OSTI]

    M. Abo-Elhamayel

    2014-12-27

    Rough set theory is a new mathematical approach to imperfect knowledge. The notion of rough sets is generalized by using an arbitrary binary relation on attribute values in information systems, instead of the trivial equality relation. The topology induced by binary relations is used to generalize the basic rough set concepts. This paper studies near approximation via general ordered topological approximation spaces which may be viewed as a generalization of the study of near approximation from the topological view. The basic concepts of some increasing (decreasing) near approximations, increasing (decreasing) near boundary regions and increasing (decreasing) near accuracy were introduced and sufficiently illustrated. Moreover, proved results, implications and add examples.

  5. APPROXIMATION OF ELECTROMAGNETIC FIELDS: PART I ...

    E-Print Network [OSTI]

    2003-08-06

    Opérateurs, 1984, Commissariat `a l'Energie Atomique, Masson, Paris. [10] J. DOUGLAS, JR., J. E. SANTOS, AND D. SHEEN, Approximation of scalar waves in ...

  6. 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 ...

  7. Optimization Online - Probabilistic optimization via approximate p ...

    E-Print Network [OSTI]

    W. van vAckooij

    2015-05-27

    May 27, 2015 ... Probabilistic optimization via approximate p-efficient points and bundle methods. W. van vAckooij(wim.van-ackooij ***at*** edf.fr )

  8. Approximations by Orthonormal Mapped Chebyshev Functions for ...

    E-Print Network [OSTI]

    2014-03-12

    a School of Mathematical Science, Xiamen University, 361005 Xiamen, China .... suitable mapping can be used to approximate functions on the whole line R (cf.

  9. National Utility Rate Database: Preprint

    SciTech Connect (OSTI)

    Ong, S.; McKeel, R.

    2012-08-01

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

  10. Strategie s for Walking on Potential Energy Surfaces Using Local Quadratic Approximations

    E-Print Network [OSTI]

    Simons, Jack

    Strategie s for Walking on Potential Energy Surfaces Using Local Quadratic Approximations JACK on potential energy surfaces is further analyzed. This method utilizes local gradient and Hessian (Le., fust and second energy derivative) information to generate a series of "steps" that are folIowed to the desired

  11. Approximate Euclidean Ramsey theorems Adrian Dumitrescu

    E-Print Network [OSTI]

    Dumitrescu, Adrian

    Approximate Euclidean Ramsey theorems Adrian Dumitrescu October 27, 2010 Abstract According condition is needed in this case. Keywords: Euclidean Ramsey theory, approximate arithmetic progression result of Ramsey from 1930: Theorem 1 (Ramsey [24]). Let p q, and r be positive integers

  12. APPROXIMATE SIMULATION RELATIONS FOR HYBRID SYSTEMS 1

    E-Print Network [OSTI]

    Pappas, George J.

    . Pappas Department of Electrical and Systems Engineering University of Pennsylvania Philadelphia, PA been introduced as a powerful tool for the approximation of discrete and continuous systems systems approximation. An example of application in the context of safety verification is shown. Keywords

  13. APPROXIMATION RESULTS FOR REFLECTIONLESS JACOBI MATRICES

    E-Print Network [OSTI]

    Remling, Christian

    APPROXIMATION RESULTS FOR REFLECTIONLESS JACOBI MATRICES ALEXEI POLTORATSKI AND CHRISTIAN REMLING Abstract. We study spaces of reflectionless Jacobi matrices. The main theme is the following type of question: Given a reflectionless Jacobi matrix, is it possible to approximate it by other reflection- less

  14. An improved proximity force approximation for electrostatics

    E-Print Network [OSTI]

    C. D. Fosco; F. C. Lombardo; F. D. Mazzitelli

    2012-04-23

    A quite straightforward approximation for the electrostatic interaction between two perfectly conducting surfaces suggests itself when the distance between them is much smaller than the characteristic lengths associated to their shapes. Indeed, in the so called "proximity force approximation" the electrostatic force is evaluated by first dividing each surface into a set of small flat patches, and then adding up the forces due two opposite pairs, the contribution of which are approximated as due to pairs of parallel planes. This approximation has been widely and successfully applied to different contexts, ranging from nuclear physics to Casimir effect calculations. We present here an improvement on this approximation, based on a derivative expansion for the electrostatic energy contained between the surfaces. The results obtained could be useful to discuss the geometric dependence of the electrostatic force, and also as a convenient benchmark for numerical analyses of the tip-sample electrostatic interaction in atomic force microscopes.

  15. Approximate error conjugation gradient minimization methods

    DOE Patents [OSTI]

    Kallman, Jeffrey S

    2013-05-21

    In one embodiment, a method includes selecting a subset of rays from a set of all rays to use in an error calculation for a constrained conjugate gradient minimization problem, calculating an approximate error using the subset of rays, and calculating a minimum in a conjugate gradient direction based on the approximate error. In another embodiment, a system includes a processor for executing logic, logic for selecting a subset of rays from a set of all rays to use in an error calculation for a constrained conjugate gradient minimization problem, logic for calculating an approximate error using the subset of rays, and logic for calculating a minimum in a conjugate gradient direction based on the approximate error. In other embodiments, computer program products, methods, and systems are described capable of using approximate error in constrained conjugate gradient minimization problems.

  16. YEAR 2 BIOMASS UTILIZATION

    SciTech Connect (OSTI)

    Christopher J. Zygarlicke

    2004-11-01

    This Energy & Environmental Research Center (EERC) Year 2 Biomass Utilization Final Technical Report summarizes multiple projects in biopower or bioenergy, transportation biofuels, and bioproducts. A prototype of a novel advanced power system, termed the high-temperature air furnace (HITAF), was tested for performance while converting biomass and coal blends to energy. Three biomass fuels--wood residue or hog fuel, corn stover, and switchgrass--and Wyoming subbituminous coal were acquired for combustion tests in the 3-million-Btu/hr system. Blend levels were 20% biomass--80% coal on a heat basis. Hog fuel was prepared for the upcoming combustion test by air-drying and processing through a hammer mill and screen. A K-Tron biomass feeder capable of operating in both gravimetric and volumetric modes was selected as the HITAF feed system. Two oxide dispersion-strengthened (ODS) alloys that would be used in the HITAF high-temperature heat exchanger were tested for slag corrosion rates. An alumina layer formed on one particular alloy, which was more corrosion-resistant than a chromia layer that formed on the other alloy. Research activities were completed in the development of an atmospheric pressure, fluidized-bed pyrolysis-type system called the controlled spontaneous reactor (CSR), which is used to process and condition biomass. Tree trimmings were physically and chemically altered by the CSR process, resulting in a fuel that was very suitable for feeding into a coal combustion or gasification system with little or no feed system modifications required. Experimental procedures were successful for producing hydrogen from biomass using the bacteria Thermotoga, a deep-ocean thermal vent organism. Analytical procedures for hydrogen were evaluated, a gas chromatography (GC) method was derived for measuring hydrogen yields, and adaptation culturing and protocols for mutagenesis were initiated to better develop strains that can use biomass cellulose. Fly ash derived from cofiring coal with waste paper, sunflower hulls, and wood waste showed a broad spectrum of chemical and physical characteristics, according to American Society for Testing and Materials (ASTM) C618 procedures. Higher-than-normal levels of magnesium, sodium, and potassium oxide were observed for the biomass-coal fly ash, which may impact utilization in cement replacement in concrete under ASTM requirements. Other niche markets for biomass-derived fly ash were explored. Research was conducted to develop/optimize a catalytic partial oxidation-based concept for a simple, low-cost fuel processor (reformer). Work progressed to evaluate the effects of temperature and denaturant on ethanol catalytic partial oxidation. A catalyst was isolated that had a yield of 24 mole percent, with catalyst coking limited to less than 15% over a period of 2 hours. In biodiesel research, conversion of vegetable oils to biodiesel using an alternative alkaline catalyst was demonstrated without the need for subsequent water washing. In work related to biorefinery technologies, a continuous-flow reactor was used to react ethanol with lactic acid prepared from an ammonium lactate concentrate produced in fermentations conducted at the EERC. Good yields of ester were obtained even though the concentration of lactic acid in the feed was low with respect to the amount of water present. Esterification gave lower yields of ester, owing to the lowered lactic acid content of the feed. All lactic acid fermentation from amylose hydrolysate test trials was completed. Management activities included a decision to extend several projects to December 31, 2003, because of delays in receiving biomass feedstocks for testing and acquisition of commercial matching funds. In strategic studies, methods for producing acetate esters for high-value fibers, fuel additives, solvents, and chemical intermediates were discussed with several commercial entities. Commercial industries have an interest in efficient biomass gasification designs but are waiting for economic incentives. Utility, biorefinery, pulp and paper, or o

  17. DEMEC Member Utilities- Green Energy Program Incentives (8 utilities)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Delaware's municipal utilities provide incentives for solar photovoltaic (PV), solar thermal, wind, geothermal, and fuel cell systems installed by their electric customers. Eligibility is limited...

  18. Wave-mechanics and the adhesion approximation

    E-Print Network [OSTI]

    C. J. Short; P. Coles

    2006-11-22

    The dynamical equations describing the evolution of a self-gravitating fluid of cold dark matter (CDM) can be written in the form of a Schrodinger equation coupled to a Poisson equation describing Newtonian gravity. It has recently been shown that, in the quasi-linear regime, the Schrodinger equation can be reduced to the exactly solvable free-particle Schrodinger equation. The free-particle Schrodinger equation forms the basis of a new approximation scheme -the free-particle approximation - that is capable of evolving cosmological density perturbations into the quasi-linear regime. The free-particle approximation is essentially an alternative to the adhesion model in which the artificial viscosity term in Burgers' equation is replaced by a non-linear term known as the quantum pressure. Simple one-dimensional tests of the free-particle method have yielded encouraging results. In this paper we comprehensively test the free-particle approximation in a more cosmologically relevant scenario by appealing to an N-body simulation. We compare our results with those obtained from two established methods: the linearized fluid approach and the Zeldovich approximation. We find that the free-particle approximation comprehensively out-performs both of these approximation schemes in all tests carried out and thus provides another useful analytical tool for studying structure formation on cosmological scales.

  19. Accuracy of Nonlinear Approximations in Spheroidal Collapse --- Why are Zel'dovich-type approximations so good? ---

    E-Print Network [OSTI]

    Ayako Yoshisato; Takahiko Matsubara; Masahiro Morikawa

    1997-08-11

    Among various analytic approximations for the growth of density fluctuations in the expanding Universe, Zel'dovich approximation and its extensions in Lagrangian scheme are known to be accurate even in mildly non-linear regime. The aim of this paper is to investigate the reason why these Zel'dovich-type approximations work accurately beyond the linear regime from the following two points of view: (1) Dimensionality of the system and (2) the Lagrangian scheme on which the Zel'dovich approximation is grounded. In order to examine the dimensionality, we introduce a model with spheroidal mass distribution. In order to examine the Lagrangian scheme, we introduce the Pad\\'e approximation in Eulerian scheme. We clarify which of these aspects supports the unusual accuracy of the Zel'dovich-type approximations. We also give an implication for more accurate approximation method beyond the Zel'dovich-type approximations.

  20. Federal Utility Partnership Working Group Meeting: Washington...

    Energy Savers [EERE]

    Utility Partnership Working Group Meeting: Washington Update Federal Utility Partnership Working Group Meeting: Washington Update Federal Utility Partnership Working Group Meeting:...

  1. Utility Partnerships Program Overview (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-07-01

    Program overview brochure for the Utility Partnerships Program within the U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP).

  2. Pueblo of Laguna Utility Authority

    Energy Savers [EERE]

    Reserves Communication RECIPE FOR SUSTAINABLE TRIBAL UTILITY KAWAIKA HANU INTERNET LET US GET YOU CONNECTED Kawaika Hanu is your local internet service provider...

  3. Harmonic Wavelet Transform and Image Approximation

    E-Print Network [OSTI]

    Zhang, Zhihua; Saito, Naoki

    2010-01-01

    DOI 10.1007/s10851-010-0202-x Harmonic Wavelet Transform andwe approximate f by a harmonic function u such that thebanks. We call this the Harmonic Wavelet Transform (HWT).

  4. Approximate inference in Gaussian graphical models

    E-Print Network [OSTI]

    Malioutov, Dmitry M., 1981-

    2008-01-01

    The focus of this thesis is approximate inference in Gaussian graphical models. A graphical model is a family of probability distributions in which the structure of interactions among the random variables is captured by a ...

  5. A fresh look at the adhesion approximation

    E-Print Network [OSTI]

    Thomas Buchert

    1997-11-04

    I report on a systematic derivation of the phenomenological ``adhesion approximation'' from gravitational instability together with a brief evaluation of the related status of analytical modeling of large-scale structure.

  6. Energy-efficient approximate computation in Topaz

    E-Print Network [OSTI]

    Achour, Sara

    2015-01-01

    The increasing prominence of energy consumption as a first-order concern in contemporary computing systems has motivated the design of energy-efficient approximate computing platforms. These computing platforms feature ...

  7. Updated: June 21, 2010 Diophantine approximation,

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Updated: June 21, 2010 Diophantine approximation, irrationality and transcendence Michel] Chap. 3. See also [1] Chap. III. References [1] S. Lang, Introduction to transcendental numbers transcendants, Springer-Verlag, Berlin, 1974. Lecture Notes in Mathematics, Vol. 402. http

  8. Optimization in Geometric Graphs: Complexity and Approximation 

    E-Print Network [OSTI]

    Kahruman-Anderoglu, Sera

    2011-02-22

    We consider several related problems arising in geometric graphs. In particular, we investigate the computational complexity and approximability properties of several optimization problems in unit ball graphs and develop ...

  9. Signal approximation using the bilinear transform

    E-Print Network [OSTI]

    Venkataraman, Archana, Ph. D. Massachusetts Institute of Technology

    2007-01-01

    This thesis explores the approximation properties of a unique basis expansion. The expansion implements a nonlinear frequency warping between a continuous-time signal and its discrete-time representation according to the ...

  10. Polymer state approximations of Schroedinger wave functions

    E-Print Network [OSTI]

    Klaus Fredenhagen; Felix Reszewski

    2006-08-25

    It is shown how states of a quantum mechanical particle in the Schroedinger representation can be approximated by states in the so-called polymer representation. The result may shed some light on the semiclassical limit of loop quantum gravity.

  11. An improved proximity force approximation for electrostatics

    SciTech Connect (OSTI)

    Fosco, Cesar D.; Instituto Balseiro, Universidad Nacional de Cuyo, R8402AGP Bariloche ; Lombardo, Fernando C.; IFIBA ; Mazzitelli, Francisco D.

    2012-08-15

    A quite straightforward approximation for the electrostatic interaction between two perfectly conducting surfaces suggests itself when the distance between them is much smaller than the characteristic lengths associated with their shapes. Indeed, in the so called 'proximity force approximation' the electrostatic force is evaluated by first dividing each surface into a set of small flat patches, and then adding up the forces due two opposite pairs, the contributions of which are approximated as due to pairs of parallel planes. This approximation has been widely and successfully applied in different contexts, ranging from nuclear physics to Casimir effect calculations. We present here an improvement on this approximation, based on a derivative expansion for the electrostatic energy contained between the surfaces. The results obtained could be useful for discussing the geometric dependence of the electrostatic force, and also as a convenient benchmark for numerical analyses of the tip-sample electrostatic interaction in atomic force microscopes. - Highlights: Black-Right-Pointing-Pointer The proximity force approximation (PFA) has been widely used in different areas. Black-Right-Pointing-Pointer The PFA can be improved using a derivative expansion in the shape of the surfaces. Black-Right-Pointing-Pointer We use the improved PFA to compute electrostatic forces between conductors. Black-Right-Pointing-Pointer The results can be used as an analytic benchmark for numerical calculations in AFM. Black-Right-Pointing-Pointer Insight is provided for people who use the PFA to compute nuclear and Casimir forces.

  12. CONSORTIUM FOR CLEAN COAL UTILIZATION

    E-Print Network [OSTI]

    Subramanian, Venkat

    1 CONSORTIUM FOR CLEAN COAL UTILIZATION Request for Proposals Date of Issue: February 16, 2015 The Consortium for Clean Coal Utilization (CCCU) at Washington University in St. Louis was established in January of 2009. The mission of the CCCU is to enable environmentally benign and sustainable use of coal, both

  13. Xylose utilization in recombinant zymomonas

    DOE Patents [OSTI]

    Caimi, Perry G; McCole, Laura; Tao, Luan; Tomb, Jean-Francois; Viitanen, Paul V

    2014-03-25

    Xylose-utilizing Zymomonas strains studied were found to accumulate ribulose when grown in xylose-containing media. Engineering these strains to increase ribose-5-phosphate isomerase activity led to reduced ribulose accumulation, improved growth, improved xylose utilization, and increased ethanol production.

  14. SUSTAINABLE ENERGY UTILITY DESIGN: OPTIONS

    E-Print Network [OSTI]

    Delaware, University of

    SUSTAINABLE ENERGY UTILITY DESIGN: OPTIONS FOR THE CITY OF SEOUL FINAL REPORT TO SEOUL DEVELOPMENT INSTITUTE APRIL 2008 #12;#12;SUSTAINABLE ENERGY UTILITY DESIGN: OPTIONS FOR THE CITY OF SEOUL Final Report....................................................................................i 1. A New Model for Sustainable Energy Service Delivery.....................1 2. Learning form

  15. Xylose utilization in recombinant Zymomonas

    DOE Patents [OSTI]

    Kahsay, Robel Y; Qi, Min; Tao, Luan; Viitanen, Paul V; Yang, Jianjun

    2013-01-07

    Zymomonas expressing xylose isomerase from A. missouriensis was found to have improved xylose utilization, growth, and ethanol production when grown in media containing xylose. Xylose isomerases related to that of A. missouriensis were identified structurally through molecular phylogenetic and Profile Hidden Markov Model analyses, providing xylose isomerases that may be used to improve xylose utilization.

  16. Gas concentration cells for utilizing energy

    DOE Patents [OSTI]

    Salomon, Robert E. (Philadelphia, PA)

    1987-01-01

    An apparatus and method for utilizing energy, in which the apparatus may be used for generating electricity or as a heat pump. When used as an electrical generator, two gas concentration cells are connected in a closed gas circuit. The first gas concentration cell is heated and generates electricity. The second gas concentration cell repressurizes the gas which travels between the cells. The electrical energy which is generated by the first cell drives the second cell as well as an electrical load. When used as a heat pump, two gas concentration cells are connected in a closed gas circuit. The first cell is supplied with electrical energy from a direct current source and releases heat. The second cell absorbs heat. The apparatus has no moving parts and thus approximates a heat engine.

  17. Gas concentration cells for utilizing energy

    DOE Patents [OSTI]

    Salomon, R.E.

    1987-06-30

    An apparatus and method are disclosed for utilizing energy, in which the apparatus may be used for generating electricity or as a heat pump. When used as an electrical generator, two gas concentration cells are connected in a closed gas circuit. The first gas concentration cell is heated and generates electricity. The second gas concentration cell repressurizes the gas which travels between the cells. The electrical energy which is generated by the first cell drives the second cell as well as an electrical load. When used as a heat pump, two gas concentration cells are connected in a closed gas circuit. The first cell is supplied with electrical energy from a direct current source and releases heat. The second cell absorbs heat. The apparatus has no moving parts and thus approximates a heat engine. 4 figs.

  18. Hualapai Tribal Utility Development Project

    SciTech Connect (OSTI)

    Hualapai Tribal Nation

    2008-05-25

    The first phase of the Hualapai Tribal Utility Development Project (Project) studied the feasibility of establishing a tribally operated utility to provide electric service to tribal customers at Grand Canyon West (see objective 1 below). The project was successful in completing the analysis of the energy production from the solar power systems at Grand Canyon West and developing a financial model, based on rates to be charged to Grand Canyon West customers connected to the solar systems, that would provide sufficient revenue for a Tribal Utility Authority to operate and maintain those systems. The objective to establish a central power grid over which the TUA would have authority and responsibility had to be modified because the construction schedule of GCW facilities, specifically the new air terminal, did not match up with the construction schedule for the solar power system. Therefore, two distributed systems were constructed instead of one central system with a high voltage distribution network. The Hualapai Tribal Council has not taken the action necessary to establish the Tribal Utility Authority that could be responsible for the electric service at GCW. The creation of a Tribal Utility Authority (TUA) was the subject of the second objective of the project. The second phase of the project examined the feasibility and strategy for establishing a tribal utility to serve the remainder of the Hualapai Reservation and the feasibility of including wind energy from a tribal wind generator in the energy resource portfolio of the tribal utility (see objective 2 below). It is currently unknown when the Tribal Council will consider the implementation of the results of the study. Objective 1 - Develop the basic organizational structure and operational strategy for a tribally controlled utility to operate at the Tribe’s tourism enterprise district, Grand Canyon West. Coordinate the development of the Tribal Utility structure with the development of the Grand Canyon West Power Project construction of the power infrastructure at Grand Canyon West. Develop the maintenance and operations capacity necessary to support utility operations. Develop rates for customers on the Grand Canyon West “mini-grid” sufficient for the tribal utility to be self-sustaining. Establish an implementation strategy for tribal utility service at Grand Canyon West Objective 2 - Develop a strategy for tribal utility takeover of electric service on the Reservation. Perform a cost analysis of Reservation electrical service. Develop an implementation strategy for tribal takeover of Reservation electrical service. Examine options and costs associated with integration of the Tribe’s wind resources.

  19. Aggregated Data for Investor-Owned Utilities, Publicly Owned Utilities, and Combined Utilities

    E-Print Network [OSTI]

    Utilities: Electric Energy Consumption Electric Peak Demand Natural Gas Consumption #12;Sources: Data for the graphs in this appendix were aggregated from the individual utility tables contained in Appendix A Incremental Savings Held Constant After 2013 The CPUC has not yet established IOU savings goals beyond 2013

  20. Study of the impacts of regulations affecting the acceptance of Integrated Community Energy Systems: public utility, energy facility siting and municipal franchising regulatory programs in Iowa. Preliminary background report

    SciTech Connect (OSTI)

    Feurer, D A; Weaver, C L; Gallagher, K C; Hejna, D; Rielley, K J

    1980-01-01

    The authority to regulate public utilities is vested generally in the Iowa State Commerce Commission. The Commission is comprised of three members appointed by the governor with the approval of two-thirds of the senate. Commissioners are appointed for six-year terms. They must be free from employment or pecuniary interests in any public utility. Although the right to grant franchises is specifically reserved for municipalities, local governments exercise no regulatory authority over the provision of utility services by public utilities. Municipally-owned utilities, however, are specifically excepted from rate regulation by the Commission. The regulation of rates charged by municipally-owned utilities is the responsibility of local governments. The Commission is given no authority to review decisions of local governments with respect to rates. Public utility regulatory statutes, energy facility siting programs, and municipal franchising authority are examined to identify how they may impact on the ability of an organization, whether or not it be a regulated utility, to construct and operate an ICES.

  1. Extending the Eikonal Approximation to Low Energy

    E-Print Network [OSTI]

    Pierre Capel; Tokuro Fukui; Kazuyuki Ogata

    2014-11-21

    E-CDCC and DEA, two eikonal-based reaction models are compared to CDCC at low energy (e.g. 20AMeV) to study their behaviour in the regime at which the eikonal approximation is supposed to fail. We confirm that these models lack the Coulomb deflection of the projectile by the target. We show that a hybrid model, built on the CDCC framework at low angular momenta and the eikonal approximation at larger angular momenta gives a perfect agreement with CDCC. An empirical shift in impact parameter can also be used reliably to simulate this missing Coulomb deflection.

  2. Approximating European Options by Rebate Barrier Options

    E-Print Network [OSTI]

    Song, Qingshuo

    2011-01-01

    When the underlying stock price is a strict local martingale process under an equivalent local martingale measure, Black-Scholes PDE associated with an European option may have multiple solutions. In this paper, we study an approximation for the smallest hedging price of such an European option. Our results show that a class of rebate barrier options can be used for this approximation, when its rebate and barrier are chosen appropriately. An asymptotic convergence rate is also achieved when the knocked-out barrier moves to infinity under suitable conditions.

  3. Deregulating the electric utility industry

    E-Print Network [OSTI]

    Bohn, Roger E.

    1982-01-01

    Many functions must be performed in any large electric power system. A specific proposal for a deregulated power system, based on a real-time spot energy marketplace, is presented and analyzed. A central T&D utility acts ...

  4. Variability Aware Network Utility Maximization

    E-Print Network [OSTI]

    Joseph, Vinay

    2011-01-01

    Network Utility Maximization (NUM) provides the key conceptual framework to study resource allocation amongst a collection of users/entities across disciplines as diverse as economics, law and engineering. In network engineering, this framework has been particularly insightful towards understanding how Internet protocols allocate bandwidth, and motivated diverse research on distributed mechanisms to maximize network utility while incorporating new relevant constraints, on energy/power, storage, stability, etc., for systems ranging from communication networks to the smart-grid. However when the available resources and/or users' utilities vary over time, a user's allocations will tend to vary, which in turn may have a detrimental impact on the users' utility or quality of experience. This paper introduces a generalized NUM framework which explicitly incorporates the detrimental impact of temporal variability in a user's allocated rewards. It explicitly incorporates tradeoffs amongst the mean and variability in ...

  5. Austin Utilities- Solar Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    In order to obtain eligibility, customers must agree to a net-metering and interconnection contract with Austin Utilities. An energy audit must be performed prior to system installation and...

  6. BBEE Public Utility Conference Call

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

    and what their track records are. Leveraging Smart GridAMI Some utilities involved in smart grid and investing in advanced metering infrastructure (AMI) see BBEE as a natural...

  7. Orlando Utilities Commission- Solar Programs

    Broader source: Energy.gov [DOE]

    The Orlando Utilities Commission (OUC) also offers incentive for solar hot water heating systems. Commercial solar hot water heating systems receive a $0.03 per kWh equivalent. Residential...

  8. Utility Marketing Strategies & Pricing Trends 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1989-01-01

    their customers, not merely their energy purchasers. These include their fuel suppliers and regulators. When a utility is not trusted, the competitive situation is reduced to that of a commodity supplier in which price and terms constitute the whole...

  9. Ukiah Utilities- PV Buydown Program

    Broader source: Energy.gov [DOE]

    Through Ukiah Utilities’ PV Buydown Program, residential and commercial customers are eligible for a $1.40-per-watt AC rebate on qualifying grid-connected PV systems up to a maximum system size of...

  10. Photovoltaics: New opportunities for utilities

    SciTech Connect (OSTI)

    Not Available

    1991-07-01

    This publication presents information on photovoltaics. The following topics are discussed: Residential Photovoltaics: The New England Experience Builds Confidence in PV; Austin's 300-kW Photovoltaic Power Station: Evaluating the Breakeven Costs; Residential Photovoltaics: The Lessons Learned; Photovoltaics for Electric Utility Use; Least-Cost Planning: The Environmental Link; Photovoltaics in the Distribution System; Photovoltaic Systems for the Rural Consumer; The Issues of Utility-Intertied Photovoltaics; and Photovoltaics for Large-Scale Use: Costs Ready to Drop Again.

  11. Exact and Approximate REML for Heteroscedastic Regression

    E-Print Network [OSTI]

    Smyth, Gordon K.

    Exact and Approximate REML for Heteroscedastic Regression Gordon K. Smyth Department of Mathematics, the above het- eroscedastic regression model is the most general model of the type considered by LN98 and SV to estimate the het- eroscedastic regression model by way of two coupled generalized linear models

  12. Semicirculant approximations in preconditioners for incompressible flow

    E-Print Network [OSTI]

    be successfully used as an approximate solver of a convection­diffusion problem in the BFB T ­preconditioner ([1 of the convection­ diffusion problem in the BFB T ­preconditioner for the incompressible Navier­ Stokes equations of discrete pressures. The square matrix F here is a discrete convection­diffusion operator. The BFB

  13. The Observer Algorithm for Visibility Approximation

    E-Print Network [OSTI]

    Doherty, Patrick

    , with dif- ferent view ranges and grid cell sizes. By changing the size of the grid cells that the algorithm or more sentries while moving to a goal position. Algorithms for finding a covert paths in the presence of stationary and moving sentries has been devised by [5] [6]. An approximate visibility algorithm was devised

  14. Approximate Inference and Protein-Folding

    E-Print Network [OSTI]

    Weiss, Yair

    Approximate Inference and Protein-Folding Chen Yanover and Yair Weiss School of Computer Science Side-chain prediction is an important subtask in the protein-folding problem. We show that #12;nding algorithms, including a widely used protein-folding software (SCWRL). 1 Introduction Inference in graphical

  15. Notion of p-value Parametric Approximations

    E-Print Network [OSTI]

    Nuel, Gregory

    Notion of p-value Parametric Approximations Power Significance of an Observation in Post-Genomics G, March 7 - 10, 2011 G. NUEL Significance of an Observation in Post-Genomics #12;Notion of p Power of a test ROC and AUC Example with GWAS G. NUEL Significance of an Observation in Post-Genomics

  16. Stochastic Approximation: Sturen in een veranderende wereld

    E-Print Network [OSTI]

    Bhulai, Sandjai

    gedaan door middel van simulaties of experimenten. Twee bekende algoritmes binnen Stochastic Approximation zijn het Robbins- Monro algoritme en het Kiefer-Wolfowitz algoritme. Deze algoritmes benaderen formule is de kleine rekentijd en het gebruik van beperkte geheugenruimte. Echter, het algoritme hangt af

  17. Approximations to the Distributed Activation Energy Model

    E-Print Network [OSTI]

    Approximations to the Distributed Activation Energy Model for Pyrolysis C.P. Please, 1 M.J. Mc, then resubmitted after minor revisions in September 2002. Abstract The Distributed Activation Energy Model (DAEM effective method for estimating kinetic parameters and the distribution of activation energies. Comparison

  18. Updated: May 28, 2010 Diophantine approximation,

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Updated: May 28, 2010 Diophantine approximation, irrationality and transcendence Michel Waldschmidt [3] is: Theorem 121 (Lambert, 1761). For any r Q \\ {0}, the numbers tan r and er are irrational. In particular the number is irrational. The main tool is continued fractions, and the first goal of Lambert

  19. Updated: June 16, 2010 Diophantine approximation,

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Updated: June 16, 2010 Diophantine approximation, irrationality and transcendence Michel. It is known (see for instance [31] p. 25) that if k is a positive integer, if an irrational real number has, 31, 13, 1]. Definition Given a real irrational number , a function = N R>0 is an irrationality

  20. Updated: May 16, 2010 Diophantine approximation,

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Updated: May 16, 2010 Diophantine approximation, irrationality and transcendence Michel Waldschmidt of 2 We first give a geometrical proof of the irrationality of the number 2 = 1, 414 213 562 373 095 rectangle. This proves the irrationality of 2. In algebraic terms, the number x = 1 + 2 satisfies x = 2

  1. Updated: June 1, 2010 Diophantine approximation,

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Updated: June 1, 2010 Diophantine approximation, irrationality and transcendence Michel Waldschmidt on the irrationality of er when r is a non-zero rational number. Next we show how a slight modification implies.1.1 Irrationality of er for r Q If r = a/b is a rational number such that er is also rational, then e|a| is also

  2. Updated: June 23, 2010 Diophantine approximation,

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Updated: June 23, 2010 Diophantine approximation, irrationality and transcendence Michel://www.math.jussieu.fr/ miw/articles/ps/eccm.ps [5] -- , Elliptic functions and transcendence, in Surveys in number theory of and . Schneider's Theorem on the transcendence of j() (corollary 174). 11 Algebraic independence 11.1 Chudnovskii

  3. Utility Solar Generation Valuation Methods

    SciTech Connect (OSTI)

    Hansen, Thomas N.; Dion, Phillip J.

    2009-06-30

    Tucson Electric Power (TEP) developed, tested and verified the results of a new and appropriate method for accurately evaluating the capacity credit of time variant solar generating sources and reviewed new methods to appropriately and fairly evaluate the value of solar generation to electric utilities. The project also reviewed general integrated approaches for adequately compensating owners of solar generation for their benefits to utilities. However, given the limited funding support and time duration of this project combined with the significant differences between utilities regarding rate structures, solar resource availability and coincidence of solar generation with peak load periods, it is well beyond the scope of this project to develop specific rate, rebate, and interconnection approaches to capture utility benefits for all possible utilities. The project developed computer software based evaluation method models to compare solar generation production data measured in very short term time increments called Sample Intervals over a typical utility Dispatch Cycle during an Evaluation Period against utility system load data. Ten second resolution generation production data from the SGSSS and actual one minute resolution TEP system load data for 2006 and 2007, along with data from the Pennington Street Garage 60 kW DC capacity solar unit installed in downtown Tucson will be applied to the model for testing and verification of the evaluation method. Data was provided by other utilities, but critical time periods of data were missing making results derived from that data inaccurate. The algorithms are based on previous analysis and review of specific 2005 and 2006 SGSSS production data. The model was built, tested and verified by in house TEP personnel. For this phase of the project, TEP communicated with, shared solar production data with and collaborated on the development of solar generation valuation tools with other utilities, including Arizona Public Service, Salt River Project, Xcel and Nevada Power Company as well as the Arizona electric cooperatives. In the second phase of the project, three years of 10 second power output data of the SGSSS was used to evaluate the effectiveness of frequency domain analysis, normal statistical distribution analysis and finally maximum/minimum differential output analysis to test the applicability of these mathematic methods in accurately modeling the output variations produced by clouds passing over the SGSSS array.

  4. Second derivatives for approximate spin projection methods

    SciTech Connect (OSTI)

    Thompson, Lee M.; Hratchian, Hrant P.

    2015-02-07

    The use of broken-symmetry electronic structure methods is required in order to obtain correct behavior of electronically strained open-shell systems, such as transition states, biradicals, and transition metals. This approach often has issues with spin contamination, which can lead to significant errors in predicted energies, geometries, and properties. Approximate projection schemes are able to correct for spin contamination and can often yield improved results. To fully make use of these methods and to carry out exploration of the potential energy surface, it is desirable to develop an efficient second energy derivative theory. In this paper, we formulate the analytical second derivatives for the Yamaguchi approximate projection scheme, building on recent work that has yielded an efficient implementation of the analytical first derivatives.

  5. Pulse design without rotating wave approximation

    E-Print Network [OSTI]

    S. Ibáñez; Yi-Chao Li; Xi Chen; J. G. Muga

    2015-10-21

    We design realizable time-dependent semiclassical pulses to invert the population of a two-level system faster than adiabatically when the rotating-wave approximation cannot be applied. Different approaches, based on the counterdiabatic method or on invariants, may lead to singularities in the pulse functions. Ways to avoid or cancel the singularities are put forward when the pulse spans few oscillations. For many oscillations an alternative numerical minimization method is proposed and demonstrated.

  6. Approximate convex decomposition and its applications 

    E-Print Network [OSTI]

    Lien, Jyh-Ming

    2009-05-15

    Approved by: Chair of Committee, Nancy M. Amato Committee Members, Ergun Akleman Ricardo Gutierrez-Osuna Donald H. House John C. Keyser Head of Department, Valerie E. Taylor December 2006 Major Subject: Computer Science iii ABSTRACT Approximate Convex...-Yen Li, for teaching me about research. I would like to thank my committee members, John Keyser, Donald House, Ergun Akleman, and Ricardo Gutierrez-Osuna, who supported me through this challenging journey. I would like to thank everyone in the Algorithms...

  7. Semiclassical approximation in Batalin-Vilkovisky formalism

    E-Print Network [OSTI]

    Albert Schwarz

    1992-10-23

    The geometry of supermanifolds provided with $Q$-structure (i.e. with odd vector field $Q$ satisfying $\\{ Q,Q\\} =0$), $P$-structure (odd symplectic structure ) and $S$-structure (volume element) or with various combinations of these structures is studied. The results are applied to the analysis of Batalin-Vilkovisky approach to the quantization of gauge theories. In particular the semiclassical approximation in this approach is expressed in terms of Reidemeister torsion.

  8. WKB Approximation to the Power Wall

    E-Print Network [OSTI]

    F. D. Mera; S. A. Fulling; J. D. Bouas; K. Thapa

    2013-03-28

    We present a semiclassical analysis of the quantum propagator of a particle confined on one side by a steeply, monotonically rising potential. The models studied in detail have potentials proportional to $x^{\\alpha}$ for $x>0$; the limit $\\alpha\\to\\infty$ would reproduce a perfectly reflecting boundary, but at present we concentrate on the cases $\\alpha =1$ and 2, for which exact solutions in terms of well known functions are available for comparison. We classify the classical paths in this system by their qualitative nature and calculate the contributions of the various classes to the leading-order semiclassical approximation: For each classical path we find the action $S$, the amplitude function $A$ and the Laplacian of $A$. (The Laplacian is of interest because it gives an estimate of the error in the approximation and is needed for computing higher-order approximations.) The resulting semiclassical propagator can be used to rewrite the exact problem as a Volterra integral equation, whose formal solution by iteration (Neumann series) is a semiclassical, not perturbative, expansion. We thereby test, in the context of a concrete problem, the validity of the two technical hypotheses in a previous proof of the convergence of such a Neumann series in the more abstract setting of an arbitrary smooth potential. Not surprisingly, we find that the hypotheses are violated when caustics develop in the classical dynamics; this opens up the interesting future project of extending the methods to momentum space.

  9. Ocala Utility Services- Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Ocala Utility Services Electric and Telecommunications is a community owned utility that serves around 50,000 customers in Ocala and Marion County area. Ocala Utility Services offers rebates on A/C...

  10. Utility Systems Management and Operational Optimization 

    E-Print Network [OSTI]

    Dhole, V.; Seillier, D.; Garza, K.

    2002-01-01

    simultaneously within the context of an integrated utilities management objective. Aspen Utilities™ provides a single environment to optimize business processes relating to utilities management and substantially improves financial performance typically equivalent...

  11. Utility Energy Services Contracts: Enabling Documents

    SciTech Connect (OSTI)

    2009-05-01

    Utility Energy Services Contracts: Enabling Documents provides materials that clarify the authority for Federal agencies to enter into utility energy services contracts (UESCs), as well as sample documents and resources to ease utility partnership contracting.

  12. Availability and Utilization of Cardiac Resuscitation Centers

    E-Print Network [OSTI]

    Mumma, Bryn E.; Diercks, Deborah B.; Holmes, James F.

    2014-01-01

    15 Last, our data reflect availability and utilization ofNovember 2014 Mumma et al. Availability and Utilization ofB rief R esearch R eport Availability and Utilization of

  13. Nonlinear adaptive control using radial basis function approximants 

    E-Print Network [OSTI]

    Petersen, Jerry Lee

    1993-01-01

    The purpose of this research is to present an adaptive control strategy using the radial basis function approximation method. Surface approximation methods using radial basis function approximants will first be discussed. ...

  14. Utility Conservation Programs: Opportunities and Strategies 

    E-Print Network [OSTI]

    Norland, D. L.; Wolf, J. L.

    1986-01-01

    and marketing of basic conser~ vat ion strate8ies based on differences in utility capac.ity and cost 'situations are examined. Partic ular attention is given to evaluating the establish ment of a subsidiary by a utility to offer energy management services... -- a relatively new concept that: may present great opportunities for many utilities. UTILITY GOALS In the electric utility industry, the goals or mission of a utility are substantially influenced by regulatory policy and changes in market...

  15. Industrial Consortium for the Utilization of the Geopressured-Geothermal Resource. Volume 1

    SciTech Connect (OSTI)

    Negus-deWys, J. (ed.)

    1990-03-01

    The Geopressured-Geothermal Program, now in its fifteenth year, is entering the transition period to commercial use. The industry cost-shared proposals to the consortium, represented in the presentations included in these proceedings, attest to the interest developing in the industrial community in utilizing the geopressured-geothermal resource. Sixty-five participants attended these sessions, two-thirds of whom represented industry. The areas represented by cost-shared proposals include (1) thermal enhanced oil recovery, (2) direct process use of thermal energy, e.g., aquaculture and agriculture, (3) conversion of thermal energy to electricity, (4) environment related technologies, e.g., use of supercritical processes, and (5) operational proposals, e.g., a field manual for scale inhibitors. It is hoped that from this array of potential use projects, some will persist and be successful in proving the viability of using the geopressured-geothermal resource. Such industrial use of an alternative and relatively clean energy resource will benefit our nation and its people.

  16. Industrial Consortium for the Utilization of the Geopressured-Geothermal Resource. Volume 2

    SciTech Connect (OSTI)

    Negus-deWys, J. (ed.)

    1990-03-01

    The Geopressured-Geothermal Program, now in its fifteenth year, is entering the transition period to commercial use. The industry cost-shared proposals to the consortium, represented in the presentations included in these proceedings, attest to the interest developing in the industrial community in utilizing the geopressured-geothermal resource. Sixty-five participants attended these sessions, two-thirds of whom represented industry. The areas represented by cost-shared proposals include (1) thermal enhanced oil recovery, (2) direct process use of thermal energy, e.g., aquaculture and agriculture, (3) conversion of thermal energy to electricity, (4) environment related technologies, e.g., use of supercritical processes, and (5) operational proposals, e.g., a field manual for scale inhibitors. It is hoped that from this array of potential use projects, some will persist and be successful in proving the viability of using the geopressured-geothermal resource. Such industrial use of an alternative and relatively clean energy resource will benefit our nation and its people.

  17. Helping Utilities Make Smart Solar Decisions Utility Barriers

    E-Print Network [OSTI]

    Homes, Christopher C.

    of utility-scale solar PV plants. Sandra Burton Regional Director March 8 ­ 9, 2011 Brookhaven National Lab · Considered an R&D activity · Minor facilitation of customer-owned PV #12;Managing Customers Barriers to solar of scale · Shift to revenue generating technology Barrier: Commission's need education on solar benefits

  18. Utility

    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 AdministrationRobust,Field-effectWorking WithTelecentric viewing system for light|UndergroundThousand Cubic

  19. Waste heat: Utilization and management

    SciTech Connect (OSTI)

    Sengupta, S.; Lee, S.S.

    1983-01-01

    This book is a presentation on waste heat management and utilization. Topics covered include cogeneration, recovery technology, low grade heat recovery, heat dispersion models, and ecological effects. The book focuses on the significant fraction of fuel energy that is rejected and expelled into the environment either as industrial waste or as a byproduct of installation/equipment operation. The feasibility of retrieving this heat and energy is covered, including technical aspects and potential applications. Illustrations demonstrate that recovery methods have become economical due to recent refinements. The book includes theory and practice concerning waste heat management and utilization.

  20. Decatur Utilities | 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 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi: Energy ResourcesUtilities Jump to:

  1. Utility Connection | 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 EISTJThin FilmUnited States:UserLabor CommissionPage EditUtilitiesUtility

  2. Waupun Utilities | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (Utility Company)Idaho)Vossloh Kiepe JumpWaranaWaterWaupun Utilities Jump

  3. Industrial Utility Webinar: Public Power Open Session

    SciTech Connect (OSTI)

    2010-02-10

    The Industrial Utility Webinars focus on providing utilities with information on how to develop sucessful energy efficeincy programs for industrial energy consumers.

  4. Industrial Utility Webinar: Combined Heat and Power

    SciTech Connect (OSTI)

    2010-06-09

    The Industrial Utility Webinars focus on providing utilities with information on how to develop sucessful energy efficeincy programs for industrial energy consumers.

  5. A Technical Databook for Geothermal Energy Utilization

    E-Print Network [OSTI]

    Phillips, S.L.

    1981-01-01

    A TECHNICAL DATABOOK FOR GEOTHERMAL ENERGY UTILIZATION S.L.Technical Databook for Geothermal Energy Utilization* s. L.Survey, Menlo Park, CA. Geothermal Energy Development, CA.

  6. Industrial Utility Webinar: Financial Mechanisms and Incentives

    SciTech Connect (OSTI)

    2010-03-10

    The Industrial Utility Webinars focus on providing utilities with information on how to develop sucessful energy efficeincy programs for industrial energy consumers.

  7. Industrial Customer Perspectives on Utility Energy Efficiency...

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

    Customer Perspectives on Utility Energy Efficiency Programs Industrial Customer Perspectives on Utility Energy Efficiency Programs These presentations from ATK Aerospace Systems,...

  8. River Falls Municipal Utilities - Residential Energy Efficiency...

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

    Name Utility Administrator River Falls Municipal Utilities Website http:www.rfmu.orgindex.aspx?nid681 Funding Source Wisconsin Focus on Energy State Wisconsin Program Type...

  9. Effective Strategies for Participating in Utility Planning |...

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

    Neighborhood Program Working with Utilities Peer Exchange Call: Effective Strategies for Participating in Utility Planning, Call Slides and Discussion Summary, August 2, 2012. This...

  10. A Case Study of Danville Utilities:

    SciTech Connect (OSTI)

    2010-03-09

    This case study provides information on how Danville Utilities utilized ITP Industrial Assessment Centers to provide energy efficiency resources to key accounts.

  11. Wells Public Utilities - Commercial & Industrial Energy Efficiency...

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

    Refrigeration Equipment Program Info Sector Name Utility Administrator Wells Public Utilities Website http:www.SaveEnergyInWells.com State Minnesota Program Type Rebate Program...

  12. Blooming Prairie Public Utilities - Commercial & Industrial Energy...

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

    per technology Program Info Sector Name Utility Administrator Blooming Prairie Public Utilities Website http:www.SaveEnergyInBloomingPrairie.com State Minnesota Program Type...

  13. Preston Public Utilities - Commercial & Industrial Energy Efficiency...

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

    Refrigeration Equipment Program Info Sector Name Utility Administrator Preston Public Utilities Website http:www.SaveEnergyInPreston.com State Minnesota Program Type Rebate...

  14. Studying the Communications Requirements of Electric Utilities...

    Energy Savers [EERE]

    Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policies- Public Meeting Studying the Communications Requirements of Electric Utilities...

  15. New Prague Utilities Commission - Commercial & Industrial Energy...

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

    per year, per technology Program Info Sector Name Utility Administrator New Prague Utilities Commission Website http:www.SaveEnergyInNewPrague.com State Minnesota Program Type...

  16. Saint Peter Municipal Utilities - Commercial & Industrial Energy...

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

    Equipment Program Info Sector Name Utility Administrator Saint Peter Municipal Utilities Website http:www.SaveEnergyInSaintPeter.com State Minnesota Program Type Rebate...

  17. Spring Valley Public Utilities - Residential Energy Efficiency...

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

    LED Lighting Program Info Sector Name Utility Administrator Spring Valley Public Utilities Website http:www.SaveEnergyInSpringValley.com State Minnesota Program Type Rebate...

  18. Federal Utility Partnership Working Group Meeting: Washington...

    Energy Savers [EERE]

    Federal Utility Partnership Working Group Meeting: Washington Update Federal Utility Partnership Working Group Meeting: Washington Update Presentation-given at the Fall 2012...

  19. Industrial Utility Webinar: Natural Gas Efficiency Programs

    SciTech Connect (OSTI)

    2010-04-15

    The Industrial Utility Webinars focus on providing utilities with information on how to develop sucessful energy efficeincy programs for industrial energy consumers.

  20. 2012 Green Utility Leaders | Department of Energy

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

    2012 Green Utility Leaders 2012 Green Utility Leaders Ranking the Top Green Power Providers See All Leaders x Renewable Energy Sales Total Customer Participants Customer...

  1. Sustainable Business Models: Utilities and Efficiency Partnerships

    Broader source: Energy.gov [DOE]

    Residential Energy Efficiency Solutions Conference: Session 1 -– Sustainable Business Models: Utilities and Efficiency Partnerships, July 10, 2012. Provides an overview and lessons learned on Energize Phoenix's utility partnership.

  2. Financial statistics of major US publicly owned electric utilities 1992

    SciTech Connect (OSTI)

    Not Available

    1994-01-01

    The 1992 edition of the Financial Statistics of Major US Publicly Owned Electric Utilities publication presents 4 years (1989 through 1992) of summary financial data and current year detailed financial data on the major publicly owned electric utilities. The objective of the publication is to provide Federal and State governments, industry, and the general public with current and historical data that can be used for policymaking and decisionmaking purposes related to publicly owned electric utility issues. Generator and nongenerator summaries are presented in this publication. Four years of summary financial data are provided. Summaries of generators for fiscal years ending June 30 and December 31, nongenerators for fiscal years ending June 30 and December 31, and summaries of all respondents are provided. The composite tables present aggregates of income statement and balance sheet data, as well as financial indicators. Composite tables also display electric operation and maintenance expenses, electric utility plant, number of consumers, sales of electricity, and operating revenue, and electric energy account data. The primary source of publicly owned financial data is the Form EIA-412, {open_quotes}Annual Report of Public Electric Utilities.{close_quotes} Public electric utilities file this survey on a fiscal year, rather than a calendar year basis, in conformance with their recordkeeping practices. In previous editions of this publication, data were aggregated by the two most commonly reported fiscal years, June 30 and December 31. This omitted approximately 20 percent of the respondents who operate on fiscal years ending in other months. Accordingly, the EIA undertook a review of the Form EIA-412 submissions to determine if alternative classifications of publicly owned electric utilities would permit the inclusion of all respondents.

  3. Enhancing adaptive sparse grid approximations and improving refinement strategies using adjoint-based a posteriori error estimates

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

    Jakeman, J. D.; Wildey, T.

    2015-01-01

    In this paper we present an algorithm for adaptive sparse grid approximations of quantities of interest computed from discretized partial differential equations. We use adjoint-based a posteriori error estimates of the interpolation error in the sparse grid to enhance the sparse grid approximation and to drive adaptivity. We show that utilizing these error estimates provides significantly more accurate functional values for random samples of the sparse grid approximation. We also demonstrate that alternative refinement strategies based upon a posteriori error estimates can lead to further increases in accuracy in the approximation over traditional hierarchical surplus based strategies. Throughout this papermore »we also provide and test a framework for balancing the physical discretization error with the stochastic interpolation error of the enhanced sparse grid approximation.« less

  4. Light duty utility arm walkdown report

    SciTech Connect (OSTI)

    Smalley, J.L.

    1998-09-25

    This document is a report of the Light Duty Utility Arm (LDUA) drawing walkdown. The purpose of this walkdown was to validate the essential configuration of the LDUA in preparation of deploying the equipment in a Hanford waste tank. The LDUA system has, over the course of its development, caused the generation of a considerable number of design drawings. The number of drawings is estimated to be well over 1,000. A large number consist of vendor type drawings, furnished by both Pacific Northwest National Laboratory (PNNL) and SPAR Aerospace Limited (SPAR). A smaller number, approximately 200, are H-6 type drawing sheets in the Project Hanford Management Contract (PHMC) document control system. A preliminary inspection of the drawings showed that the physical configuration of the LDUA did not match the documented configuration. As a result of these findings, a scoping walkdown of 20 critical drawing sheets was performed to determine if a problem existed in configuration management of the LDUA system. The results of this activity showed that 18 of the 20 drawing sheets were found to contain errors or omissions of varying concern. Given this, Characterization Engineering determined that a walkdown of the drawings necessary and sufficient to enable safe operation and maintenance of the LDUA should be performed. A review team was assembled to perform a review of all of the drawings and determine the set which would need to be verified through an engineering walkdown. The team determined that approximately 150 H-6 type drawing sheets would need to be verified, 12 SPAR/PNNL drawing sheets would need to be verified and converted to H-6 drawings, and three to six new drawings would be created (see Appendix A). This report documents the results of that walkdown.

  5. Departmental Energy and Utilities Management

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

    2002-04-15

    To establish requirements and responsibilities for managing Department of Energy (DOE) energy and utility supplies and services. Cancels paragraphs 6d(2), 6h, 7b(1), 7b(2), and 7e(16) of DOE O 430.1A) Cancels: DOE O 430.2, DOE O 430.1A (in part)

  6. Zymomonas with improved xylose utilization

    DOE Patents [OSTI]

    Viitanen, Paul V. (West Chester, PA); Tao, Luan (Havertown, PA); Zhang, Yuying (New Hope, PA); Caimi, Perry G. (Kennett Square, PA); McCutchen, Carol M. (Wilmington, DE); McCole, Laura (East Fallowfield, PA); Zhang, Min (Lakewood, CO); Chou, Yat-Chen (Lakewood, CO); Franden, Mary Ann (Centennial, CO)

    2011-08-16

    Strains of Zymomonas were engineered by introducing a chimeric xylose isomerase gene that contains a mutant promoter of the Z. mobilis glyceraldehyde-3-phosphate dehydrogenase gene. The promoter directs increased expression of xylose isomerase, and when the strain is in addition engineered for expression of xylulokinase, transaldolase and transketolase, improved utilization of xylose is obtained.

  7. OETR OETR Symposium Utilization of

    E-Print Network [OSTI]

    Tokyo, University of

    OETR OETR Symposium Utilization of Offshore Wind Energy for a New Landscape of Beautiful Japan OETR) and Chuichi ARAKAWA (Vice president of the World Wind Energy Association and The University of Tokyo) 1 Part 1 + OEAJ Two keys, Bankability and Public Acceptance A leading veri cation project for offshore wind

  8. A statistical mechanical model of closed loop plectoneme supercoiling and its variational approximation

    E-Print Network [OSTI]

    Dominic J. O'. Lee

    2015-04-17

    Presented here, is a technical manuscript that may form the basis of later published work. In it, we develop a statistical mechanical model to describe a closed loop plectoneme, applicable for when the closed loop is sufficiently supercoiled. The model divides the system up into end loops and a braided section; the end loops are assumed to contribute little to the super-coil writhe. Within the braided section, the model incorporates interactions that depend on the structure of the molecule; in particular, we consider those that depend on helical structure. A method for approximating the steric interactions is utilized that we had previously used in other publications. We go on to construct variational approximations for our closed loop plectoneme model in two cases. The first case is where helix dependent interactions are strong, and in the second case they are considered weak. In developing these approximations, we approximate the Fuller-White condition by replacing, in all expressions that depend on twist, writhe with average writhe, valid when the braided section is sufficiently long. How this approximation is made and the conditions when this approximation is valid are also discussed. The approximation allows for a Legendre transformation of the free energy, which with the introduction of moment (or torque), effectively allowing for twist and average writhe to be treated independently in the transformed (Gibbs like) free energy. Next, we then show how one may compute the average writhe of the braided section. Lastly, we discuss how some of the approximations considered may be relaxed, and discuss how the resulting model free energy might be computed by MC simulation.

  9. Sensitivity approximation for robust stability and tracking 

    E-Print Network [OSTI]

    McLean, Chris Steven

    1984-01-01

    ) Norman W. Na gle (Member) Don R. Halverson (Member) William B. Jones (Head of Department) May 1984 1n Abstract Sensitivity Approximation for Robust Stability and Tracking. (May 1984) Chris Steven McLean, B. S, , Louisiana Tech University... indispensable to the completion of this thesis. I would like to thank Dr. S. P. Bhattacharyya for introducing me to the wonders of automatic control. I also would like to thank Dr. D. R. Halverson and Dr. N. W. Naugle for serving on my committee, Dr. John...

  10. Relativistic Random Phase Approximation At Finite Temperature

    SciTech Connect (OSTI)

    Niu, Y. F.; Paar, N.; Vretenar, D.; Meng, J.

    2009-08-26

    The fully self-consistent finite temperature relativistic random phase approximation (FTRRPA) has been established in the single-nucleon basis of the temperature dependent Dirac-Hartree model (FTDH) based on effective Lagrangian with density dependent meson-nucleon couplings. Illustrative calculations in the FTRRPA framework show the evolution of multipole responses of {sup 132}Sn with temperature. With increased temperature, in both monopole and dipole strength distributions additional transitions appear in the low energy region due to the new opened particle-particle and hole-hole transition channels.

  11. Fact #834: August 18, 2014 About Two-Thirds of Transportation...

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

    day equivalent) Mode Gasoline Diesel fuel Liquefied petroleum gas Jet fuel Residual fuel oil Natural gas Electricity Total Light vehicles 7.9 0.2 0.0 0.0 0.0 0.0 * 8.1 Medium...

  12. Fact #756: December 3, 2012 Midwest Produces Two-Thirds of All...

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

    Louisiana, Delaware, and Virginia. West includes California only. For 2011, Tesla did not report production information. No light vehicles are currently manufactured in...

  13. Fact #836: September 1, 2014 Non-OPEC Countries Supply Nearly Two-thirds of

    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 GasAdjustmentsShirleyEnergyTher i n cEnergyNaturaldefinesMay 4, Jeffryand63-2006 AprilConsider- DatasetU.S.

  14. A utility`s perspective of the market for IGCC

    SciTech Connect (OSTI)

    Black, C.R.

    1993-06-01

    The market for Integrated Gasification Combined Cycle (IGCC) power plants is discussed and some of the experiments with an Integrated Gasification Combined Cycle Power Plant Project, Polk Unit {number_sign}1 are described. It was found that not only is the technology different from what most US utilities are accustomed to, but also that the non-technical issues or business issues, such as contracting, project management and contract administration also have different requirements. The non-technical or business issues that are vital to the successful commercialization of this technology are described. These business issues must be successfully addressed by both the utilities and the technology suppliers in order for integrated gasification combined cycle power plants to achieve commercial success.

  15. The Background Field Approximation in (quantum) cosmology

    E-Print Network [OSTI]

    R. Parentani

    1998-03-12

    We analyze the Hamilton-Jacobi action of gravity and matter in the limit where gravity is treated at the background field approximation. The motivation is to clarify when and how the solutions of the Wheeler-DeWitt equation lead to the Schr\\"odinger equation in a given background. To this end, we determine when and how the total action, solution of the constraint equations of General Relativity, leads to the HJ action for matter in a given background. This is achieved by comparing two neighboring solutions differing slightly in their matter energy content. To first order in the change of the 3-geometries, the change of the gravitational action equals the integral of the matter energy evaluated in the background geometry. Higher order terms are governed by the ``susceptibility'' of the geometry. These classical properties also apply to quantum cosmology since the conditions which legitimize the use of WKB gravitational waves are concomitant with those governing the validity of the background field approximation.

  16. The validity of the Background Field Approximation

    E-Print Network [OSTI]

    R. Parentani

    1997-10-10

    In the absence of a tractable theory of quantum gravity, quantum matter field effects have been so far computed by treating gravity at the Background Field Approximation. The principle aim of this paper is to investigate the validity of this approximation which is not specific to gravity. To this end, for reasons of simplicity and clarity, we shall compare the descriptions of thermal processes induced by constant acceleration (i.e. the Unruh effect) in four dynamical frameworks. In this problem, the position of the ``heavy'' accelerated system plays the role of gravity. In the first framework, the trajectory is treated at the BFA: it is given from the outset and unaffected by radiative processes. In the second one, recoil effects induced by these emission processes are taken into account by describing the system's position by WKB wave functions. In the third one, the accelerated system is described by second quantized fields and in the fourth one, gravity is turned on. It is most interesting to see when and why transitions amplitudes evaluated in different frameworks but describing the same process do agree. It is indeed this comparison that determines the validity of the BFA. It is also interesting to notice that the abandonment of the BFA delivers new physical insights concerning the processes. For instance, in the fourth framework, the ``recoils'' of gravity show that the acceleration horizon area acts as an entropy in delivering heat to accelerated systems.

  17. The local potential approximation in quantum gravity

    E-Print Network [OSTI]

    Dario Benedetti; Francesco Caravelli

    2012-10-09

    Within the context of the functional renormalization group flow of gravity, we suggest that a generic f(R) ansatz (i.e. not truncated to any specific form, polynomial or not) for the effective action plays a role analogous to the local potential approximation (LPA) in scalar field theory. In the same spirit of the LPA, we derive and study an ordinary differential equation for f(R) to be satisfied by a fixed point of the renormalization group flow. As a first step in trying to assess the existence of global solutions (i.e. true fixed point) for such equation, we investigate here the properties of its solutions by a comparison of various series expansions and numerical integrations. In particular, we study the analyticity conditions required because of the presence of fixed singularities in the equation, and we develop an expansion of the solutions for large R up to order N=29. Studying the convergence of the fixed points of the truncated solutions with respect to N, we find a characteristic pattern for the location of the fixed points in the complex plane, with one point stemming out for its stability. Finally, we establish that if a non-Gaussian fixed point exists within the full f(R) approximation, it corresponds to an R^2 theory.

  18. 7.4 Landfill Methane Utilization

    Broader source: Energy.gov [DOE]

    A chapter on Landfill Methane Utilization from the Clean Energy Strategies for Local Governments publication.

  19. Investments and forward utilities Marek Musiela

    E-Print Network [OSTI]

    Zariphopoulou, Thaleia

    Investments and forward utilities Marek Musiela and Thaleia Zariphopoulou BNP Paribas, London proposes a new approach for portfolio allocation. The novel concept of forward dynamic utility is introduced. General classes of such utilities are constructed by combining the local variational util- ity

  20. Recycling Authorizations: Toward Secondary and Approximate Authorizations Model

    E-Print Network [OSTI]

    of matching best suitable approximate authorizations. 1 Introduction Although, every authorization decision

  1. Bethe free energy, Kikuchi approximations and belief propagation

    E-Print Network [OSTI]

    Bethe free energy, Kikuchi approximations and belief propagation algorithms Jonathan S. Yedidia to a stationary point of an approximate free energy, known as the Bethe free energy in statis- tical physics- curate free energy approximations, of which Bethe's approximation is the simplest. Exploiting

  2. Power Sales to Electric Utilities

    SciTech Connect (OSTI)

    1989-02-01

    The Public Utilities Regulatory Policies Act (PURPA) of 1979 requires that electrical utilities interconnect with qualifying facilities and purchase electricity at a rate based upon their full avoided costs (i.e., costs of providing both capacity and energy). Qualifying facilities (QF) include solar or geothermal electric units, hydropower, municipal solid waste or biomass-fired power plants, and cogeneration projects that satisfy maximum size, fuel use, ownership, location, and/or efficiency criteria. In Washington State, neither standard power purchase prices based upon a proxy ''avoided plant'', standard contracts, or a standard offer process have been used. Instead, a variety of power purchase contracts have been negotiated by developers of qualifying facilities with investor-owned utilities, public utility districts, and municipally-owned and operated utilities. With a hydro-based system, benefits associated with resource acquisition are determined in large part by how compatible the resource is with a utility's existing generation mix. Power purchase rates are negotiated and vary according to firm energy production, guarantees, ability to schedule maintenance or downtime, rights of refusal, power plant purchase options, project start date and length of contract; front-loading or levelization provisions; and the ability of the project to provide ''demonstrated'' capacity. Legislation was also enacted which allows PURPA to work effectively. Initial laws established ownership rights and provided irrigation districts, PUDs, and municipalities with expanded enabling powers. Financial processes were streamlined and, in some cases, simplified. Finally, laws were passed which are designed to ensure that development proceeds in an environmentally acceptable manner. In retrospect, PURPA has worked well within Washington. In the state of Washington, 20 small-scale hydroelectric projects with a combined generating capacity of 77 MW, 3 solid waste-to-energy facilities with 55 MW of electrical output, 4 cogeneration projects with 34.5 MW of generating capability, and 4 wastewater treatment facility digester gas-to-energy projects with 5 MW of electrical production have come on-line (or are in the final stages of construction) since the passage of PURPA. These numbers represent only a small portion of Washington's untapped and underutilized cogeneration and renewable resource generating potentials. [DJE-2005

  3. Optimized Utility Systems and Furnace Integration 

    E-Print Network [OSTI]

    McMullan, A. S.; Spriggs, H. D.

    1987-01-01

    SYSTEMS AND FURNACE INTEGRATION A. S. McMullan and H. D. Spriggs, Linnhoff March, Inc., Leesburg, Va. ABSTRACT Conventional process design philosophy usually results in utility systems being designed after process design defines the Process.../Utility interface. Clearly, changing the process design can result in different utility demands and possibly in different utility system designs. This paper presents a procedure, using Pinch Technology, for the simultaneous design of process and utility...

  4. Purdue Solar Energy Utilization Laboratory

    SciTech Connect (OSTI)

    Agrawal, Rakesh

    2014-01-21

    The objective of this project is to establish and set-up a laboratory that will facilitate research and development of new low-cost and high-efficiency solar energy utilization technologies at Purdue University. The outcome will help spur the creation of solar energy start-up companies and eventually a solar energy industry in Indiana that can help fulfill the growing national demand for solar energy.

  5. Survey of Western U.S. Electric Utility Resource Plans

    E-Print Network [OSTI]

    Wilkerson, Jordan

    2014-01-01

    resources in electric utility planning. Utilities Policy 2,2008. Survey of Utility Resource Planning and ProcurementResource Planning at Electric Utilities: The Planning

  6. Approximate Stokes Drift Profiles in Deep Water

    E-Print Network [OSTI]

    Breivik, Øyvind; Bidlot, Jean-Raymond

    2014-01-01

    A deep-water approximation to the Stokes drift velocity profile is explored as an alternative to the monochromatic profile. The alternative profile investigated relies on the same two quantities required for the monochromatic profile, viz the Stokes transport and the surface Stokes drift velocity. Comparisons with parametric spectra and profiles under wave spectra from the ERA-Interim reanalysis and buoy observations reveal much better agreement than the monochromatic profile even for complex sea states. That the profile gives a closer match and a more correct shear has implications for ocean circulation models since the Coriolis-Stokes force depends on the magnitude and direction of the Stokes drift profile and Langmuir turbulence parameterizations depend sensitively on the shear of the profile. The alternative profile comes at no added numerical cost compared to the monochromatic profile.

  7. Utilization of oilseed proteins in precooked breakfast sausage 

    E-Print Network [OSTI]

    Harward, Eugene Rees

    1979-01-01

    links (control and protein-added) were made in which vary- ing levels of raw meat were replaced with an equivalent weight of soy or cottonseed proteins which were calculated to contain approximately 16% protein on a hydrated basis. In Experiment 1..., 10% of the raw meat was replaced indi- vidually with soy or cottonseed proteins. In Experiment 2 10%, 20% or 30% of the raw meat was replaced with a 1:1 ratio of textured to non-textured protein products. Experiment 3 utilized varying ratios of SI...

  8. Utility+Utility Access Map | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (Utility Company) JumpGTZUtility Rates API Version 2 is Live!

  9. Property:OpenEI/UtilityRate/Utility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report Url Jump to: navigation,News/LinkUtility Jump to: navigation,

  10. Utility theory U: O-> R (utility maps from outcomes to a real number)

    E-Print Network [OSTI]

    Allan, Vicki H.

    9/22/2010 1 Utility theory U: O-> R (utility maps from outcomes to a real number) represents the attitude about risk by mapping the value to a utility. Decreasing marginal utility · Typically, at some point, having an extra dollar does not make people much happier (decreasing marginal utility). Marginal

  11. C H A P T E R From Experienced Utility to Decision Utility

    E-Print Network [OSTI]

    Berridge, Kent

    C H A P T E R 18c0018 From Experienced Utility to Decision Utility Kent C. Berridge and John P. O'Doherty O U T L I N E Introduction 325 Experienced Utility 325 Brain Mechanisms of Sensory Pleasure: Window into Experienced Utility Generators 326 Experienced Utility: Neuroimaging Brain Activations in Humans 327 Relating

  12. Utilization of Agricultural WasteUtilization of Agricultural Waste for Composite Panelsfor Composite Panels

    E-Print Network [OSTI]

    Utilization of Agricultural WasteUtilization of Agricultural Waste for Composite Panelsfor. The benefits of utilizing agricultural residues for woodbenefits of utilizing agricultural residues for wood a fiber source that is currentlyadded product from a fiber source that is currently not well utilized

  13. Dual formulation of the utility maximization problem : the case of nonsmooth utility

    E-Print Network [OSTI]

    Touzi, Nizar

    Dual formulation of the utility maximization problem : the case of nonsmooth utility B. Bouchard the dual formulation of the utility maximization problem in incomplete markets when the utility function. First, we allow for nonsmooth utility functions, so as to include the shortfall minimization problems

  14. Innovative Utility Pricing for Industry 

    E-Print Network [OSTI]

    Ross, J. A.

    1986-01-01

    stream_source_info ESL-IE-86-06-20.pdf.txt stream_content_type text/plain stream_size 22550 Content-Encoding ISO-8859-1 stream_name ESL-IE-86-06-20.pdf.txt Content-Type text/plain; charset=ISO-8859-1 INNOVATIVE UTILITY... self-generation. The paper discusses compe tition for industrial customers and innovative pricing trends that have evolved nationally to meet the growing competition for industrial sales. Cogeneration activities and the emerging concepts...

  15. Electric Utility Measurement & Verification Program 

    E-Print Network [OSTI]

    Lau, K.; Henderson, G.; Hebert, D.

    2007-01-01

    . Therefore, if the flow fluctuates from what is required, the gas must be recycled. The M&V technique used for this project was Option B, Metering. The analysis was based on liquid flow data and motor current data (used as a ESL-IE-07... is an electric utility with a service area covering over 95% of the province of British Columbia in Canada. Power Smart is BC Hydro?s demand-side-management (DSM) division. Power Smart develops, operates and manages various DSM programs for residential...

  16. BBEE Public Utility Conference Call

    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 OutreachProductswsicloudwsiclouddenDVA N C E D B L O O DBiomass andAtomsVehicles and FuelsjBBEE Public Utility

  17. Maryville Utilities | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to: navigation, searchScotland Jump to:MarshallMaryville Utilities Jump

  18. Slinger Utilities | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc JumpHeter Battery Technology CoWanpingSilveira deScienceSkySlinger Utilities

  19. Corix Utilities | 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 SECTIONRobertsdale, Alabama (Utility Company)| Open(Evans,Oregon:Volcano, Hawaii | OpenCorinna,Corix

  20. Jefferson Utilities | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam:onItron (California) JumpJefferson Utilities Jump to:

  1. utility | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (UtilityMichigan)data bookresult formats Homestormtextutility Home

  2. On the complexity of approximating a nash equilibrium

    E-Print Network [OSTI]

    Daskalakis, Constantinos

    2011-01-01

    We show that computing a relative---that is, multiplicative as opposed to additive---approximate Nash equilibrium in two-player games is PPAD-complete, even for constant values of the approximation. Our result is the first ...

  3. Approximations for the rotational excitation of molecules by atoms

    E-Print Network [OSTI]

    Chu, Shih-I; Dalgarno, A.

    1975-01-01

    The applicability of the effective close?coupling approximation of Rabitz and the centrifugal decoupling approximation of McGuire and Kouri is examined for a system which models the rotational excitation of molecular nitrogen in collisions...

  4. Report on some recent advances in Diophantine approximation

    E-Print Network [OSTI]

    Waldschmidt, Michel

    by linear forms · irrationality measures · transcendence criterion · criteria for algebraic inde- pendence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 Rational approximation to a real number . . . . . . . . . . . . . . . . . . . . . . . . 6 1, algebraic and simultaneous approximation to a single number

  5. Guest Editorial Sparse Approximations in Signal and Image Processing

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Guest Editorial Sparse Approximations in Signal and Image Processing Sparse approximation to solve many other signal processing problems, including blind source separation, feature extraction techniques to images as well as audio and biomedical signals, new efficient im- plementations of greedy

  6. Spot pricing of public utility services

    E-Print Network [OSTI]

    Bohn, Roger E.

    1982-01-01

    This thesis analyzes how public utility prices should be changed over time and space. Earlier static and non spatial models of public utility pricing emerge as special cases of the theory developed here. Electricity is ...

  7. Federal Utility Program Overview (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-07-01

    Fact sheet overview of the U.S. Department of Energy (DOE) Federal Energy Management Program's (FEMP) Federal Utility Program, including common contracts and services available to Federal agencies through local serving utilities.

  8. Utility Green Pricing Programs: Design, Implementation, and

    E-Print Network [OSTI]

    Utility Green Pricing Programs: Design, Implementation, and Consumer Response February 2004 · NREL-35618 Utility Green Pricing Programs: Design, Implementation, and Consumer Response Lori Bird, Blair Swezey legal liability or responsibility for the accuracy, completeness, or usefulness of any information

  9. A Utility View of Energy Conservation 

    E-Print Network [OSTI]

    Grant, S. A.

    1979-01-01

    Energy conservation, as viewed by the utility companies, is of real concern due to the energy situation and recent national energy legislation. The conversion programs of the electric utilities, particularly those in the southwestern part of the U...

  10. Industrial Low Temperature Waste Heat Utilization 

    E-Print Network [OSTI]

    Altin, M.

    1981-01-01

    In this paper, some common and emerging techniques to better utilize energy in the chemical process industries are discussed. Temperature levels of waste heat available are pointed out. Emerging practices for further economical utilization of waste...

  11. PV Controls Utility-Scale Demonstration Project

    SciTech Connect (OSTI)

    O'Neill, Barbara; Gevorgian, Vahan

    2015-10-14

    This presentation provides a high-level overview of the utility-scale PV controls demonstration project.

  12. Utility Rebates and Incentive Programs (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-07-01

    Fact sheet overview of the Federal Utility Partnership Working Group (FUPWG), including group objectives, activities, and services.

  13. Community Renewable Energy Deployment: Sacramento Municipal Utility...

    Open Energy Info (EERE)

    Community Renewable Energy Deployment: Sacramento Municipal Utility District Projects Jump to: navigation, search Name Community Renewable Energy Deployment: Sacramento Municipal...

  14. Electric Utility Demand-Side Evaluation Methodologies 

    E-Print Network [OSTI]

    Treadway, N.

    1986-01-01

    UTILITY DEMAND-SIDE EVALUATION METHODOLOGIES* Nat Treadway Public Utility Commission of Texas Austin, Texas ABSTRACT The electric. util ity industry's demand-side management programs can be analyzed ?from various points of view using a standard... cost and certification proceedings. A s~andard benefit-cost methodology analyzes demand-slde management programs from various ~oints of view. The benefit-cost methodology now ln use by several electric utilities and the * The views presented...

  15. Approximation Algorithms for Multi-criteria Traveling Salesman Problems

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    +3-42 +, respectively. Moreover, we design ran- domized approximation algorithms for multi-criteria () -ATSP (ratio 1 2. Therefore, we design randomized approximation schemes for multi-criteria cycle cover problems by showingApproximation Algorithms for Multi-criteria Traveling Salesman Problems Bodo Manthey1 and L

  16. Numerical Approximation of Vortex Density Evolution in a Superconductor.

    E-Print Network [OSTI]

    Styles, Vanessa

    Numerical Approximation of Vortex Density Evolution in a Superconductor. C.M. Elliott & V. Styles Abstract A #12;nite volume/element approximation of a mean #12;eld model of superconducting vortices in one approximations of a two-dimensional version of the mean #12;eld model of superconducting vortices considered

  17. Input-ouput approximation for nonlinear structural dynamics 

    E-Print Network [OSTI]

    Beaver, Stefanie Rene'

    2009-05-15

    . Nonlinear Assumed Model with Fixed Rotation Rate . 51 V NONLINEAR INPUT-OUTPUT APPROXIMATION . . . . . . 54 A. Algorithm Overview . . . . . . . . . . . . . . . . . . . . . 54 B. Linear Input-Output Approximation . . . . . . . . . . . . 57 C. Least Squares.... Quadratic Assumed Modes with Higher-Order Terms . 77 ix CHAPTER Page 2. Application of Nonlinear Input-Output Approxi- mation Algorithm . . . . . . . . . . . . . . . . . . . . 81 a. Linear Input-Output Approximation . . . . . . . 82 b. Least Squares...

  18. Technical Note Variational free energy and the Laplace approximation

    E-Print Network [OSTI]

    Daunizeau, Jean

    Technical Note Variational free energy and the Laplace approximation Karl Friston,a, Jérémie October 2006 This note derives the variational free energy under the Laplace approximation, with a focus. This is relevant when using the free energy as an approximation to the log-evidence in Bayesian model averaging

  19. Transferable Utility Planning Games Ronen I. Brafman

    E-Print Network [OSTI]

    Engel, Yagil

    Transferable Utility Planning Games Ronen I. Brafman Computer Science Dept. Ben-Gurion Univ between standard AI planning constructs and a clas- sical cooperative model of transferable-utility coalition games, we introduce the notion of transferable-utility (TU) planning games. The key

  20. Work Force Planning for Public Power Utilities

    E-Print Network [OSTI]

    Work Force Planning for Public Power Utilities: Ensuring Resources to Meet Projected.............................................................................20 #12;ii Work Force Planning for Public Power Utilities #12;1 Work Force Planning for Public Power as a result of the aging work force; and · Public power utilities need to do more to plan for their future

  1. Transferable Utility Planning Games Ronen I. Brafman

    E-Print Network [OSTI]

    Engel, Yagil

    Transferable Utility Planning Games Ronen I. Brafman Computer Science Dept. Ben-Gurion Univ is that each agent in planning games can in prin- ciple influence the utility of each other agent, resulting utilities (TU), connecting between the idea of planning games and the classical model of TU coali- tion

  2. Utilities: Emerging Opportunities in Performance Contracting 

    E-Print Network [OSTI]

    Wood, G. W.

    1996-01-01

    Many utilities are struggling to decide on the types services they want to offer their large commercial and industrial customers. A&C Enercom is often consulted to help utilities develop packages of services for these customers. Many of the utility...

  3. UTILITY MAXIMIZATION WITH INFINITELY MANY ASSETS

    E-Print Network [OSTI]

    Guasoni, Paolo

    UTILITY MAXIMIZATION WITH INFINITELY MANY ASSETS M. DE DONNO, P. GUASONI, AND M. PRATELLI@dm.unipi.it guasoni@dm.unipi.it pratelli@dm.unipi.it Abstract. We study the problem of utility maximization from termi of a contingent claim. Utility maximization problems are then studied with the convex du- ality method, and we

  4. Injecting Utility into Anonymized Datasets Daniel Kifer

    E-Print Network [OSTI]

    Kifer, Dan

    Injecting Utility into Anonymized Datasets Daniel Kifer Department of Computer Science Cornell@cs.cornell.edu ABSTRACT Limiting disclosure in data publishing requires a careful balance between privacy and utility. On the other hand, the utility of such data has not been well-studied. In this paper we will discuss

  5. RAMS/HYPACT Evaluation and Visualization Utilities

    E-Print Network [OSTI]

    Gohm, Alexander

    REVU RAMS/HYPACT Evaluation and Visualization Utilities Version 2.3.1 User's Guide August 20, 2001 and Visualization Utilities (REVU), which is the standard supported package for generating graphical representations data in one of several available formats (e.g. Vis5D, GrADS, GRIB). REVU utilizes NCAR Graphics

  6. UTILIZATION OF ALASKAN SALMON CANNERY WASTE

    E-Print Network [OSTI]

    UTILIZATION OF ALASKAN SALMON CANNERY WASTE Marine Biological Laboratory iM0V3Ul953 WOODS HOLE and Wildlife Service, John L. Farley, Director UTILIZATION OP ALASKM SALMON CANlTEaT WASH PAHTS I AHD II, September 1953 #12;#12;UTILIZATION OF AUSKAN SALMON CANNERY WASTE y PART I 1. Possibility of Development

  7. Spectral utilization in thermophotovoltaic devices

    SciTech Connect (OSTI)

    Clevenger, M.B.; Murray, C.S.

    1997-12-31

    Multilayer assemblies of epitaxially-grown, III-V semiconductor materials are being investigated for use in thermophotovoltaic (TPV) energy conversion applications. It has been observed that thick, highly-doped semiconductor layers within cell architectures dominate the parasitic free-carrier absorption (FCA) of devices at wavelengths above the bandgap of the semiconductor material. In this work, the wavelength-dependent, free-carrier absorption of p- and n-type InGaAs layers grown epitaxially onto semi-insulating (SI) InP substrates has been measured and related to the total absorption of long-wavelength photons in thermophotovoltaic devices. The optical responses of the TPV cells are then used in the calculation of spectral utilization factors and device efficiencies.

  8. Domestic utility attitudes toward foreign uranium supply

    SciTech Connect (OSTI)

    Not Available

    1981-06-01

    The current embargo on the enrichment of foreign-origin uranium for use in domestic utilization facilities is scheduled to be removed in 1984. The pending removal of this embargo, complicated by a depressed worldwide market for uranium, has prompted consideration of a new or extended embargo within the US Government. As part of its on-going data collection activities, Nuclear Resources International (NRI) has surveyed 50 domestic utility/utility holding companies (representing 60 lead operator-utilities) on their foreign uranium purchase strategies and intentions. The most recent survey was conducted in early May 1981. A number of qualitative observations were made during the course of the survey. The major observations are: domestic utility views toward foreign uranium purchase are dynamic; all but three utilities had some considered foreign purchase strategy; some utilities have problems with buying foreign uranium from particular countries; an inducement is often required by some utilities to buy foreign uranium; opinions varied among utilities concerning the viability of the domestic uranium industry; and many utilities could have foreign uranium fed through their domestic uranium contracts (indirect purchases). The above observations are expanded in the final section of the report. However, it should be noted that two of the observations are particularly important and should be seriously considered in formulation of foreign uranium import restrictions. These important observations are the dynamic nature of the subject matter and the potentially large and imbalanced effect the indirect purchases could have on utility foreign uranium procurement.

  9. Utility-Interconnected Photovoltaic Systems: Evaluating the Rationale for the Utility-Accessible External Disconnect Switch

    SciTech Connect (OSTI)

    Coddington, M.; Margolis, R.M.; Aabakken, J.

    2008-01-01

    The utility-accessible alternating current (AC) external disconnect switch (EDS) for distributed generators, including photovoltaic (PV) systems, is a hardware feature that allows a utility?s employees to manually disconnect a customer-owned generator from the electricity grid. This paper examines the utility-accessible EDS debate in the context of utility-interactive PV systems for residential and small commercial installations. It also evaluates the rationale for EDS requirements.

  10. TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-based Routing in Delay Tolerant Networksbased Routing in Delay Tolerant Networksbas

    E-Print Network [OSTI]

    Wu, Jie

    TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility- based Routing in Delay Tolerant Networksbased on utility-based routingIntroduction on utility-based routingIntroduction on utility-based routing

  11. Types of Utility Energy Service Contracts | Department of Energy

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

    Project Financing Utility Energy Service Contracts Types of Utility Energy Service Contracts Types of Utility Energy Service Contracts Several types of contracts are used as...

  12. Getting the Best Value with Utility Energy Service Contracts...

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

    Project Financing Utility Energy Service Contracts Getting the Best Value with Utility Energy Service Contracts Getting the Best Value with Utility Energy Service Contracts...

  13. The Law of Demand versus Diminishing Marginal Utility

    E-Print Network [OSTI]

    Beattie, Bruce R.; LaFrance, Jeffrey T

    2006-01-01

    not guarantee DSD. This form of utility function generates aHausman). This type of utility model is commonplace amongversus Diminishing Marginal Utility References Burt, O.R.

  14. The Law of Demand Versus Diminishing Marginal Utility

    E-Print Network [OSTI]

    Beattie, Bruce R.; LaFrance, Jeffrey T.

    2006-01-01

    not guarantee DSD. This form of utility function generates aHausman). This type of utility model is commonplace amongversus Diminishing Marginal Utility References Burt, O.R.

  15. Better Buildings Working with Utilities Peer Exchange Call: Kick...

    Energy Savers [EERE]

    Better Buildings Working with Utilities Peer Exchange Call: Kick-off Better Buildings Working with Utilities Peer Exchange Call: Kick-off Better Buildings Working with Utilities...

  16. The law of demand versus diminishing marginal utility

    E-Print Network [OSTI]

    Bettie, Bruce R.; Lafrance, Jeffrey T.

    2006-01-01

    Diminishing marginal utility will provide a negative sloperegularity for u. Thus, this utility function (or a simpleDiminishing Marginal Utility Endnotes References Burt,

  17. Trends in Utility Green Pricing Programs (2006)

    SciTech Connect (OSTI)

    Bird, L.; Kaiser, M.

    2007-10-01

    In the early 1990s, only a handful of utilities offered their customers a choice of purchasing electricity generated from renewable energy sources. Today, more than 750 utilities--or about 25% of all utilities nationally--provide their customers a "green power" option. Through these programs, more than 70 million customers have the ability to purchase renewable energy to meet some portion or all of their electricity needs--or make contributions to support the development of renewable energy resources. Typically, customers pay a premium above standard electricity rates for this service. This report presents year-end 2006 data on utility green pricing programs, and examines trends in consumer response and program implementation over time. The data in this report, which were obtained via a questionnaire distributed to utility green pricing program managers, can be used by utilities to benchmark the success of their green power programs.

  18. Trends in Utility Green Pricing Programs (2006)

    SciTech Connect (OSTI)

    Bird, Lori; Kaiser, Marshall

    2007-10-01

    In the early 1990s, only a handful of utilities offered their customers a choice of purchasing electricity generated from renewable energy sources. Today, more than 750 utilities—or about 25% of all utilities nationally—provide their customers a “green power” option. Through these programs, more than 70 million customers have the ability to purchase renewable energy to meet some portion or all of their electricity needs—or make contributions to support the development of renewable energy resources. Typically, customers pay a premium above standard electricity rates for this service. This report presents year-end 2006 data on utility green pricing programs, and examines trends in consumer response and program implementation over time. The data in this report, which were obtained via a questionnaire distributed to utility green pricing program managers, can be used by utilities to benchmark the success of their green power programs.

  19. Automating approximate Bayesian computation by local linear regression

    E-Print Network [OSTI]

    Thornton, Kevin R

    2009-01-01

    computation by local linear regression Kevin R Thorntonof ABC based on using a linear regression to approximate theimplements the local linear-regression approach to ABC. The

  20. The Numerical Approximation of Solutions of Partial Differential ...

    E-Print Network [OSTI]

    2009-05-05

    i.e., instead of thinking of the approximate solution as being linear between .... Consider the mildly nonlinear two-point boundary problem given by. ?(aux )x + c(

  1. How to Solve Schroedinger Problems by Approximating the Potential Function

    SciTech Connect (OSTI)

    Ledoux, Veerle; Van Daele, Marnix

    2010-09-30

    We give a survey over the efforts in the direction of solving the Schroedinger equation by using piecewise approximations of the potential function. Two types of approximating potentials have been considered in the literature, that is piecewise constant and piecewise linear functions. For polynomials of higher degree the approximating problem is not so easy to integrate analytically. This obstacle can be circumvented by using a perturbative approach to construct the solution of the approximating problem, leading to the so-called piecewise perturbation methods (PPM). We discuss the construction of a PPM in its most convenient form for applications and show that different PPM versions (CPM,LPM) are in fact equivalent.

  2. Approximation Algorithms for the Fault-Tolerant Facility Placement Problem

    E-Print Network [OSTI]

    Yan, Li

    2013-01-01

    5.2 Algorithm ECHS with Ratio5.3 Algorithm EBGS with RatioFormulation 2.1.3 Approximation Algorithms . 2.1.4 Bifactor

  3. ANALOG QUANTUM NEURON FOR FUNCTIONS APPROXIMATION A. EZHOV; A...

    Office of Scientific and Technical Information (OSTI)

    FOR FUNCTIONS APPROXIMATION A. EZHOV; A. KHROMOV; G. BERMAN 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; IMPLEMENTATION; NERVE CELLS; WAVEGUIDES We describe a system able...

  4. Sharyland Utilities- Commercial Standard Offer Program (Texas)

    Broader source: Energy.gov [DOE]

    Sharyland Utilities offers the Residential and "Hard-to-Reach" Standard Offer Programs, which encourage residential customers to pursue energy saving measures and equipment upgrades in their homes....

  5. Coldwater Board of Public Utilities - Commercial & Industrial...

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

    Rebate 50% of Project Cost Cannot exceed 100% of a single energy efficient measure's cost. Program Info Sector Name Utility Administrator Efficiency Smart Website http:...

  6. Florida Public Utilities- Residential HVAC Rebate Program

    Broader source: Energy.gov [DOE]

    Florida Public Utilities offers rebates to electric residential customers who improve the efficiency of homes. Central air conditioners and heat pumps which meet program requirements are eligible...

  7. ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; GREENHOUSES...

    Office of Scientific and Technical Information (OSTI)

    fuel-fired peak heating for geothermal greenhouses Rafferty, K. 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; GREENHOUSES; AUXILIARY HEATING; CAPITALIZED COST; OPERATING...

  8. Shakopee Public Utilities - Commercial and Industrial Energy...

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

    conditioners CustomOthers pending approval Other EE Maximum Rebate 50% of total project cost PV: 5000 per business account Program Info Sector Name Utility Administrator...

  9. Sandia Energy - Utility Operations and Programs

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

    into a utility portfolio is examined by evaluating the potential additional value of PV and CSP (including thermal storage) resulting from their addition to traditional fossil...

  10. Colorado Springs Utilities- Energy Efficient Builder Program

    Broader source: Energy.gov [DOE]

    The Colorado Springs Utilities (CSU) Energy Efficient Builder Program offers an incentive to builders who construct ENERGY STAR® qualified homes within the CSU service area. The incentive range...

  11. Clark Public Utilities Impact Evaluation Final Report

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

    Clark Public Utilities Impact Evaluation Final Report - July 2015 - Home Energy Reports Memorandum 1375 Walnut Street Suite 200 Boulder, CO 80302 303-728-2500 To: Lauren Gage...

  12. Sandia Energy - Power Towers for Utilities

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

    Power Towers for Utilities Home Stationary Power Energy Conversion Efficiency Solar Energy Concentrating Solar Power (CSP) National Solar Thermal Test Facility Central Receiver...

  13. Optimizing Asset Utilization and Operating Efficiency Efficiently...

    Office of Environmental Management (EM)

    also part of the solution for Smart Grid Optimizing Asset Utilization and Operating Efficien Efficientl More Documents & Publications Metrics for Measuring Progress Toward...

  14. Norwich Public Utilities- Zero Percent Financing Program

    Broader source: Energy.gov [DOE]

    In partnership with several local banks, Norwich Public Utilities (NPU) is offering a zero percent loan to commercial and industrial customers for eligible energy efficiency improvement projects....

  15. Waseca Utilities- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Develops innovative products and services to help them deliver value to customers. With help from SMMPA, Waseca Utilities provides incentives for residential and commercial customers to improve t...

  16. Transportation Energy Futures Series: Projected Biomass Utilization...

    Office of Scientific and Technical Information (OSTI)

    Transportation Energy Futures Series: Projected Biomass Utilization for Fuels and Power in a Mature Market Ruth, M.; Mai, T.; Newes, E.; Aden, A.; Warner, E.; Uriarte, C.; Inman,...

  17. Springfield Utility Board- Energy Savings Plan Program

    Broader source: Energy.gov [DOE]

    The Springfield Utility Board provides industrial customers with a comprehensive report to identify cost effective efficiency improvements. Eligible measures include high efficiency motors,...

  18. Aligning Utility Interests with Energy Efficiency Objectives...

    Open Energy Info (EERE)

    Aligning Utility Interests with Energy Efficiency Objectives: A Review of Recent Efforts at Decoupling and Performance Incentives Jump to: navigation, search Tool Summary LAUNCH...

  19. Utilities Working with Industry: Action Plan

    SciTech Connect (OSTI)

    2010-06-25

    This action plan outlines joint ITP and utility activities that will help reach a national goal of reducing energy by 25 percent over then next 10 years.

  20. Trends in Utility Green Pricing Programs (2005)

    Broader source: Energy.gov [DOE]

    This report presents year-end 2005 data on utility green pricing programs, and examines trends in consumer response and program implementation over time. The data in this report, which were obtained via a questionnaire distributed to utility green pricing program managers, can be used by utilities to benchmark the success of their green power programs. It is important to note that this report covers only a portion of voluntary markets for renewable energy. It does not cover green power sold by independent marketers except for cases in which the marketers work in conjunction with utilities or default electricity suppliers.

  1. Utility Contract Buydown and Buyout Prepayment Approaches

    Broader source: Energy.gov [DOE]

    Several recommended buydown and buyout approaches exist that allow Federal agencies to leverage prepayments to get the best value from utility energy service contracts (UESCs).

  2. Springfield Utility Board- Commercial Lighting Incentive

    Broader source: Energy.gov [DOE]

    The Springfield Utility Board (SUB) offers rebates for a wide range of commercial and industrial lighting retrofits and new construction.

  3. Setting Energy Savings Targets for Utilities

    SciTech Connect (OSTI)

    none,

    2011-09-01

    Helps policymakers understand how electric and natural gas utilities can achieve greater efficiency by establishing numeric energy savings targets and goals for energy efficiency programs.

  4. Utility Locating in the DOE Environment

    SciTech Connect (OSTI)

    Clark Scott; Gail Heath

    2006-04-01

    Some advances have been made in utility locating in recent years and standards have been recently published to try and categorize the level of information known about the utility in the subsurface. At the same time some characterization about the level of effort or technology in the geophysicist approach to utility locating may be generalized. The DOE environment poses some added difficulties and this presentation covers these issues, costs and the technical approach that has been developed at the INEEL to prevent utility hits and how it fits into the generalized classification of effort.

  5. Demand Response Programs Oregon Public Utility Commission

    E-Print Network [OSTI]

    Demand Response Programs Oregon Public Utility Commission January 6, 2005 Mike Koszalka Director;Demand Response Results, 2004 Load Control ­ Cool Keeper ­ ID Irrigation Load Control Price Responsive

  6. Lodi Electric Utility- PV Rebate Program

    Broader source: Energy.gov [DOE]

    Note: Lodi Electric Utility accepted applications for program year 2015 from January 2 - 30, 2015. The program is fully subscribed for 2015.  

  7. Federal Utility Partnership Working Group Participants | Department...

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

    a utility energy service contract project. General Services Administration National Aeronautics and Space Administration U.S. Department of Agriculture Agricultural Research...

  8. Utility FGD Survey, January--December 1989

    SciTech Connect (OSTI)

    Hance, S.L.; McKibben, R.S.; Jones, F.M. )

    1992-03-01

    The Utility flue gas desulfurization (FGD) Survey report, which is generated by a computerized data base management system, represents a survey of operational and planned domestic utility flue gas desulfurization (FGD) systems. It summarizes information contributed by the utility industry, system and equipment suppliers, system designers, research organizations, and regulatory agencies. The data cover system design, fuel characteristics, operating history, and actual system performance. Also included is a unit-by-unit discussion of problems and solutions associated with the boilers, scrubbers, and FGD systems. The development status (operational, under construction, or in the planning stages), system supplier, process, waste disposal practice, and regulatory class are tabulated alphabetically by utility company.

  9. Utilization of char from biomass gasification in catalytic applications

    E-Print Network [OSTI]

    Columbia University

    Utilization of char from biomass gasification in catalytic applications Naomi Klinghoffer Submitted Utilization of char from biomass gasification in catalytic applications Naomi Klinghoffer Utilization takes place during catalytic decomposition. This thesis focuses on the utilization of char as a catalyst

  10. Approximate Dynamic Programming for Networks: Fluid Models and Constraint Reduction

    E-Print Network [OSTI]

    Veatch, Michael H.

    of approximating functions for the differential cost. The first contribution of this paper is identifying new or piece-wise quadratic. Fluid cost has been used to initialize the value iteration algorithm [5Approximate Dynamic Programming for Networks: Fluid Models and Constraint Reduction Michael H

  11. USING THE LINEAR NOISE APPROXIMATION TO CHARACTERIZE MOLECULAR NOISE IN

    E-Print Network [OSTI]

    Ingalls, Brian

    USING THE LINEAR NOISE APPROXIMATION TO CHARACTERIZE MOLECULAR NOISE IN REACTION PATHWAYS Matthew Canada N2L 3G1 Abstract The Linear Noise Approximation offers an elegant analytic method to probe the effects of molecular noise on small-scale chemical reaction pathways by expanding the full chemical Master

  12. Motivation and Outline Hatree-Fock Theory and KLI Approximation

    E-Print Network [OSTI]

    Holzwarth, Natalie

    Motivation and Outline Hatree-Fock Theory and KLI Approximation Frozen core orbital approximation March 24, 2011 Xiao Xu, N. A. W. Holzwarth PAW + HF & KLI #12;Motivation and Outline Hatree-Fock Theory of HF and KLI Conclusion Outline 1 Motivation of this work: Why? orbital dependent functionals + PAW 2

  13. Transport approximations in partially diffusive media Guillaume Bal

    E-Print Network [OSTI]

    Bal, Guillaume

    Transport approximations in partially diffusive media Guillaume Bal Department of Applied Physics concerns the analysis of approximations of transport equations in diffusive media. Firstly, we consider a variational formulation for the first-order transport equation that has the correct diffusive behavior

  14. PROJECT REPORT USING NEURAL NETWORKS FOR APPROXIMATE RADIOSITY FORM FACTOR

    E-Print Network [OSTI]

    Anderson, Charles W.

    PROJECT REPORT USING NEURAL NETWORKS FOR APPROXIMATE RADIOSITY FORM FACTOR COMPUTATION Submitted, between each pair of objects within the scene. This project report explores the use of neural networks.3 Approximation with Neural Networks : : : : : : : : : : : : : : : : : : : : : : : 2 1.4 Outline of Project Report

  15. Tighter Bounds for Graph Steiner Tree Approximation Gabriel Robins

    E-Print Network [OSTI]

    Zelikovsky, Alexander

    and properties. In Section 3 we present our main algorithm, called k-LCA. The basic approximation result for k-LCA is proved in Section 4. In Sections 5 and 6 we prove an approximation ratio of the k-LCA algorithm in general graphs, and estimate the performance of the Iterated 1-Steiner and k-LCA heuristics in qu

  16. Tutorial, GECCO'05, Washington D.C. Fitness Approximation

    E-Print Network [OSTI]

    Yang, Shengxiang

    1 Tutorial, GECCO'05, Washington D.C. Fitness Approximation in Evolutionary Computation Yaochu Jin Honda Research Institute Europe Khaled Rasheed University of Georgia Tutorial, GECCO'05, Washington D expensive fitness evaluations Tutorial, GECCO'05, Washington D.C. Fitness Approximation Methods · Problem

  17. The Approximation of Nuclear Contaminant Transport in Porous Media

    E-Print Network [OSTI]

    Douglas Jr., Jim

    of a chain of radioactive waste products and to present the results of some typical simulationsThe Approximation of Nuclear Contaminant Transport in Porous Media Jim Douglas, Jr. #3; Chieh;ective and eÆcient numerical method for approximating the solution of equations that govern the transport

  18. Technical Note Variational free energy and the Laplace approximation

    E-Print Network [OSTI]

    Penny, Will

    Technical Note Variational free energy and the Laplace approximation Karl Friston,a, Jérémie the variational free energy under the Laplace approximation, with a focus on accounting for additional model complexity induced by increasing the number of model parameters. This is relevant when using the free energy

  19. Fast Vectorless Power Grid Verification Using an Approximate Inverse Technique

    E-Print Network [OSTI]

    Najm, Farid N.

    Fast Vectorless Power Grid Verification Using an Approximate Inverse Technique Nahi H. Abdul Ghani Department of ECE University of Toronto Toronto, Ontario, Canada f.najm@utoronto.ca ABSTRACT Power grid Aids General Terms Performance, Algorithms, Verification Keywords Power grid, voltage drop, approximate

  20. Fresnel approximations for acoustic fields of rectangularly symmetric sources

    E-Print Network [OSTI]

    Mast, T. Douglas

    Fresnel approximations for acoustic fields of rectangularly symmetric sources T. Douglas Masta for determining the acoustic fields of rectangularly symmetric, baffled, time-harmonic sources under the Fresnel. The expressions presented are generalized to three different Fresnel approximations that correspond, respectively

  1. Energy Content of Colliding Plane Waves using Approximate Noether Symmetries

    E-Print Network [OSTI]

    M. Sharif; Saira Waheed

    2011-09-19

    This paper is devoted to study the energy content of colliding plane waves using approximate Noether symmetries. For this purpose, we use approximate Lie symmetry method of Lagrangian for differential equations. We formulate the first-order perturbed Lagrangian for colliding plane electromagnetic and gravitational waves. It is shown that in both cases, there does not exist

  2. Approximate and Multipartite Quantum Correlation (Communication) Zhaohui Wei

    E-Print Network [OSTI]

    Jain, Rahul

    classical distributions or bipartite quantum states in the single-shot setting by Zhang (Proc. 3rd Innov that the cost to approximate a bipartite quantum state equals that to approximate its exact purifications, which the latter. We characterize the relationship between them by giving upper and lower bounds. 4

  3. The Utility Battery Storage Systems Program Overview

    SciTech Connect (OSTI)

    Not Available

    1994-11-01

    Utility battery energy storage allows a utility or customer to store electrical energy for dispatch at a time when its use is more economical, strategic, or efficient. The UBS program sponsors systems analyses, technology development of subsystems and systems integration, laboratory and field evaluation, and industry outreach. Achievements and planned activities in each area are discussed.

  4. Risk Aversion Asymptotics for Power Utility Maximization

    E-Print Network [OSTI]

    Nutz, Marcel

    Risk Aversion Asymptotics for Power Utility Maximization Marcel Nutz ETH Zurich, Department consider the economic problem of optimal consumption and in- vestment with power utility. We study consumption is obtained for general semimartingale mod- els while the convergence of the optimal trading

  5. Utility programs for substation diagnostics development

    SciTech Connect (OSTI)

    NONE

    1996-03-01

    This article is a brief overview of the opening remarks of the utility panel. These remarks developed a number of interesting substation diagnostic activities and concepts in which the electric utilities are engaged and outlined the considerations which must accompany development of diagnostic sensors and systems. These area include transformer diagnostics, circuit breaker diagnostics, and testing/cost of diagnostic systems.

  6. Public utility regulation and national energy policy

    SciTech Connect (OSTI)

    Navarro, P.

    1980-09-01

    The linkage between Public Utility Commission (PUC) regulation, the deteriorating financial health of the electric utility industry, and implementation of national energy policy, particularly the reduction of foreign petroleum consumption in the utility sector is examined. The role of the Nation's utilities in the pursuit of national energy policy goals and postulates a linkage between PUC regulation, the poor financial health of the utility industry, and the current and prospective failure to displace foreign petroleum in the utility sector is discussed. A brief history of PUC regulation is provided. The concept of regulatory climate and how the financial community has developed a system of ranking regulatory climate in the various State jurisdictions are explained. The existing evidence on the hypothesis that the cost of capital to a utility increases and its availability is reduced as regulatory climate grows more unfavorable from an investor's point of view is analyzed. The implications of this cost of capital effect on the electric utilities and collaterally on national energy policy and electric ratepayers are explained. Finally various State, regional and Federal regulatory responses to problems associated with PUC regulation are examined.

  7. January/February 1997 21 Utility Green

    E-Print Network [OSTI]

    for clean, renewable energy sources. BY BLAIR G. SWEZEY The electric power industry is undergoing unprec structure, utilities developed formal plans to build or acquire the power resources necessary to service and that domestic natural gas would be in short supply. At the time, the only utility options were to build large

  8. Relationships between stress corrosion cracking tests and utility operating experience

    SciTech Connect (OSTI)

    Baum, Allen

    1999-10-22

    Several utility steam generator and stress corrosion cracking databases are synthesized with the view of identifying the crevice chemistry that is most consistent with the plant cracking data. Superheated steam and neutral solution environments are found to be inconsistent with the large variations in the observed SCC between different plants, different support plates within a plant, and different crevice locations. While the eddy current response of laboratory tests performed with caustic chemistries approximates the response of the most extensively affected steam generator tubes, the crack propagation kinetics in these tests differ horn plant experience. The observations suggest that there is a gradual conversion of the environment responsible for most steam generator ODSCC from a concentrated, alkaline-forming solution to a progressively more steam-enriched environment.

  9. Fact Sheet: DOE/National Association of Regulatory Utility Commissione...

    Energy Savers [EERE]

    DOENational Association of Regulatory Utility Commissioners Natural Gas Infrastructure Modernization Partnership Fact Sheet: DOENational Association of Regulatory Utility...

  10. City of Lompoc Utilities - Residential Energy Efficient Appliance...

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

    Name Utility Administrator Utility Conservation Website http:www.cityoflompoc.comutilitiesconservation State California Program Type Rebate Program Rebate Amount Clothes...

  11. Properties of the Boltzmann equation in the classical approximation

    SciTech Connect (OSTI)

    Tanji, Naoto; Epelbaum, Thomas; Gelis, Francois; Wu, Bin

    2014-12-30

    We study the Boltzmann equation with elastic point-like scalar interactions in two different versions of the the classical approximation. Although solving numerically the Boltzmann equation with the unapproximated collision term poses no problem, this allows one to study the effect of the ultraviolet cutoff in these approximations. This cutoff dependence in the classical approximations of the Boltzmann equation is closely related to the non-renormalizability of the classical statistical approximation of the underlying quantum field theory. The kinetic theory setup that we consider here allows one to study in a much simpler way the dependence on the ultraviolet cutoff, since one has also access to the non-approximated result for comparison.

  12. Properties of the Boltzmann equation in the classical approximation

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

    Epelbaum, Thomas; Gelis, François; Tanji, Naoto; Wu, Bin

    2014-12-30

    We examine the Boltzmann equation with elastic point-like scalar interactions in two different versions of the the classical approximation. Although solving numerically the Boltzmann equation with the unapproximated collision term poses no problem, this allows one to study the effect of the ultraviolet cutoff in these approximations. This cutoff dependence in the classical approximations of the Boltzmann equation is closely related to the non-renormalizability of the classical statistical approximation of the underlying quantum field theory. The kinetic theory setup that we consider here allows one to study in a much simpler way the dependence on the ultraviolet cutoff, since onemore »has also access to the non-approximated result for comparison.« less

  13. ENERGY STAR Portfolio Manager and Utility Benchmarking Programs: Effectiveness as a Conduit to Utility Energy Efficiency Programs

    Broader source: Energy.gov [DOE]

    ENERGY STAR Portfolio Manager and Utility Benchmarking Programs: Effectiveness as a Conduit to Utility Energy Efficiency Programs

  14. Balancing Cost and Risk: The Treatment of Renewable Energy in Western Utility Resource Plans

    SciTech Connect (OSTI)

    Bolinger, Mark; Wiser, Ryan

    2005-08-10

    Markets for renewable energy have historically been motivated primarily by policy efforts, but a less widely recognized driver is poised to also play a major role in the coming years: utility integrated resource planning (IRP). Resource planning has re-emerged in recent years as an important tool for utilities and regulators, particularly in regions where retail competition has failed to take root. In the western United States, the most recent resource plans contemplate a significant amount of renewable energy additions. These planned additions--primarily coming from wind power--are motivated by the improved economics of wind power, a growing acceptance of wind by electric utilities, and an increasing recognition of the inherent risks (e.g., natural gas price risk, environmental compliance risk) in fossil-based generation portfolios. This report examines how twelve western utilities treat renewable energy in their recent resource plans. In aggregate, these utilities supply approximately half of all electricity demand in the western United States. Our purpose is twofold: (1) to highlight the growing importance of utility IRP as a current and future driver of renewable energy, and (2) to identify methodological/modeling issues, and suggest possible improvements to methods used to evaluate renewable energy as a resource option. Here we summarize the key findings of the report, beginning with a discussion of the planned renewable energy additions called for by the twelve utilities, an overview of how these plans incorporated renewables into candidate portfolios, and a review of the specific technology cost and performance assumptions they made, primarily for wind power. We then turn to the utilities' analysis of natural gas price and environmental compliance risks, and examine how the utilities traded off portfolio cost and risk in selecting a preferred portfolio.

  15. Higher-degree linear approximations of nonlinear systems

    SciTech Connect (OSTI)

    Karahan, S.

    1989-01-01

    In this dissertation, the author develops a new method for obtaining higher degree linear approximations of nonlinear control systems. The standard approach in the analysis and synthesis of nonlinear systems is a first order approximation by a linear model. This is usually performed by obtaining a series expansion of the system at some nominal operating point and retaining only the first degree terms in the series. The accuracy of this approximation depends on how far the system moves away from the normal point, and on the relative magnitudes of the higher degree terms in the series expansion. The approximation is achieved by finding an appropriate nonlinear coordinate transformation-feedback pair to perform the higher degree linearization. With the proposed method, one can improve the accuracy of the approximation up to arbitrarily higher degrees, provided certain solvability conditions are satisfied. The Hunt-Su linearizability theorem makes these conditions precise. This approach is similar to Poincare's Normal Form Theorem in formulation, but different in its solution method. After some mathematical background the author derives a set of equations (called the Homological Equations). A solution to this system of linear equations is equivalent to the solution to the problem of approximate linearization. However, it is generally not possible to solve the system of equations exactly. He outlines a method for systematically finding approximate solutions to these equations using singular value decomposition, while minimizing an error with respect to some defined norm.

  16. Utilization of geothermal heat in tropical fruit-drying process

    SciTech Connect (OSTI)

    Chen, B.H.; Lopez, L.P.; King, R.; Fujii, J.; Tanaka, M.

    1982-10-01

    The power plant utilizes only the steam portion of the HGP-A well production. There are approximately 50,000 pounds per hour of 360/sup 0/F water produced (approximately 10 million Btu per hour) and the water is currently not used and is considered a waste. This tremendous resource could very well be used in applications such as food processing, food dehydration and other industrial processing that requires low-grade heat. One of the applications is examined, namely the drying of tropical fruits particularly the papaya. The papaya was chosen for the obvious reason that it is the biggest crop of all fruits produced on the Big Island. A conceptual design of a pilot plant facility capable of processing 1000 pounds of raw papaya per day is included. This facility is designed to provide a geothermally heated dryer to dehydrate papayas or other tropical fruits available on an experimental basis to obtain data such as drying time, optimum drying temperature, etc.

  17. Trends in Utility Green Pricing Programs (2005)

    SciTech Connect (OSTI)

    Bird, Lori; Brown, Elizabeth

    2006-10-01

    In the early 1990s, only a handful of utilities offered their customers a choice of purchasing electricity generated from renewable energy sources. Today, more than 600 utilities—or about 20% of all utilities nationally—provide their customers a “green power” option. Because some utilities offer programs in conjunction with cooperative associations or other publicly owned power entities, the number of distinct programs totals more than 130. Through these programs, more than 50 million customers have the ability to purchase renewable energy to meet some portion or all of their electricity needs—or make contributions to support the development of renewable energy resources. Typically, customers pay a premium above standard electricity rates for this service. This report presents year-end 2005 data on utility green pricing programs, and examines trends in consumer response and program implementation over time. The data in this report, which were obtained via a questionnaire distributed to utility green pricing program managers, can be used by utilities to benchmark the success of their green power programs.

  18. Improved approximate formulas for flux from cylindrical and rectangular sources

    SciTech Connect (OSTI)

    Wallace, O.J.; Bokharee, S.A.

    1993-03-01

    This report provides two new approximate formulas for the flux at detector points outside the radial and axial extensions of a homogeneous cylindrical source and improved approximate formulas for the flux at points opposite rectangular surface sources. These formulas extend the range of geometries for which analytic approximations may be used by shield design engineers to make rapid scoping studies and check more extensive calculations for reasonableness. These formulas can be used to support skeptical, independent evaluations and are also valuable teaching tools for introducing shield designers to complex shield analyses.

  19. Green energy: The implementation and utilization of renewable energy in the United States

    SciTech Connect (OSTI)

    Murry, N.L. [Coastal Contractors and Engineers, Inc., West Berlin, NJ (United States)

    1998-12-31

    Renewable energy has become a viable solution for the United States (US) increasing demand for energy. Often referred to as Green Energy, renewable energy uses the earth`s natural resources to create energy. The wind, sun, water, and the earth`s molten core each offer an attainable form of energy. Hydroelectricity uses running water, wind power uses high speed winds, solar panels collect solar energy as heat, and geothermal energy uses the earth`s molten core to heat water. The Department of Energy classifies Renewable Energy into the following sections: Geothermal Energy, Fuel from Biomass, and Solar Electric. Solar Electric is further subdivided into Solar Thermal Electric, Photovoltaics (Solar Cells), Wind/Windmills, Ocean Thermal Electric and Hydropower/Hydroelectric Dams. Currently, renewable energy provides only 12% of the US electricity supply. Approximately 10% of this is supplied by hydroelectric sources, 1% of this is supplied by hydroelectric sources, 1% is supplied by biomass, and less than 1% is supplied by geothermal, wind and solar combined. Nationally, the generating capacity of renewable energy has increased slightly during the 1990`s. Renewable energy generation contributes to approximately 94 thousand Megawatts of electricity compared to approximately 682 thousand Megawatts of electricity generated from nonrenewables in the year 1996. The continued implementation and utilization of renewable energy in the US are dependent upon several variables. These variables include: the support from Federal and State governments, utility purchase requirements if utility deregulation is passed, and consumer education on the environmental benefits of renewable energy.

  20. Utility Rate | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (Utility Company) JumpGTZ ClimateFeedUratMaringaTaquaraUtahUtilityUtility

  1. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility Rate Home >UtilityUtility

  2. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility Rate HomeUtility

  3. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility RateUtility Rate

  4. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility RateUtility

  5. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtilityRate HomeUtility

  6. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtilityRateUtility Rate

  7. Utility Scale Solar Inc | 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 EISTJThin FilmUnited States:UserLaborUtility RateUtilityRateUtilityScale

  8. Orthogonal Polynomial Approximation in Higher Dimensions: Applications in Astrodynamics 

    E-Print Network [OSTI]

    Bani Younes, Ahmad H.

    2013-08-05

    immediate application to efficient propagation of catalogs of Resident Space Objects (RSOs) and improved accounting for the uncertainty in the ephemeris of these objects. More fundamentally, the methodology promises to be of broad utility in solving initial...

  9. Approximate multi-agent planning in dynamic and uncertain environments

    E-Print Network [OSTI]

    Redding, Joshua David, 1978-

    2012-01-01

    Teams of autonomous mobile robotic agents will play an important role in the future of robotics. Efficient coordination of these agents within large, cooperative teams is an important characteristic of any system utilizing ...

  10. The local potential approximation in the background field formalism

    E-Print Network [OSTI]

    I. Hamzaan Bridle; Juergen A. Dietz; Tim R. Morris

    2014-03-20

    Working within the familiar local potential approximation, and concentrating on the example of a single scalar field in three dimensions, we show that the commonly used approximation method of identifying the total and background fields, leads to pathologies in the resulting fixed point structure and the associated spaces of eigenoperators. We then show how a consistent treatment of the background field through the corresponding modified shift Ward identity, can cure these pathologies, restoring universality of physical quantities with respect to the choice of dependence on the background field, even within the local potential approximation. Along the way we point out similarities to what has been previously found in the f(R) approximation in asymptotic safety for gravity.

  11. The WKB approximation for a linear potential and ceiling 

    E-Print Network [OSTI]

    Zapata, Todd Austin

    2009-05-15

    The physical problem this thesis deals with is a quantum system with linear potential driving a particle away from a ceiling (impenetrable barrier). This thesis will construct the WKB approximation of the quantum mechanical propagator...

  12. Mean Field Variational Approximations in Continuous-Time Markov Processes

    E-Print Network [OSTI]

    Friedman, Nir

    Mean Field Variational Approximations in Continuous-Time Markov Processes A thesis submitted Processes . . . . . . . . . . . . . . . . . . . 18 2.3 Continuous Time Markov Processes-component Representation - Continuous Time Bayesian Networks . 24 2.3.3 Inference in Continuous Time Markov Processes

  13. Numerical Approximations of Stochastic Optimal Stopping and Control Problems 

    E-Print Network [OSTI]

    Siska, David

    2007-01-01

    We study numerical approximations for the payoff function of the stochastic optimal stopping and control problem. It is known that the payoff function of the optimal stopping and control problem corresponds to the solution ...

  14. Approximate translation : media, narrative, and experience in urban design

    E-Print Network [OSTI]

    Crisman, Jonathan

    2013-01-01

    Approximate translation is developed as a design process through which the place-embedded history of an urban environment can be understood, allowing for better design and intervention in that urban environment. Generally, ...

  15. Tractability through approximation : a study of two discrete optimization problems

    E-Print Network [OSTI]

    Farahat, Amr, 1973-

    2004-01-01

    (cont.) algorithm, at one extreme, and complete enumeration, at the other extreme. We derive worst-case approximation guarantees on the solution produced by such an algorithm for matroids. We then define a continuous ...

  16. Queueing systems subject to random server failures: an approximation 

    E-Print Network [OSTI]

    Matis, Timothy

    1998-01-01

    research into finding exact or approximate methods that adjust key performance measures of a system to reflect server failures. Many of the methods that have been developed suffer either from a high degree of computational complexity or from tight...

  17. APPROXIMATING SPECTRAL INVARIANTS OF HARPER OPERATORS ON GRAPHS II

    E-Print Network [OSTI]

    Schick, Thomas

    APPROXIMATING SPECTRAL INVARIANTS OF HARPER OPERATORS ON GRAPHS II VARGHESE MATHAI, THOMAS SCHICK;2 VARGHESE MATHAI, THOMAS SCHICK, AND STUART YATES subset E+ of these edges in which each combinatorial edge

  18. Approximate dynamic programming with applications in multi-agent systems

    E-Print Network [OSTI]

    Valenti, Mario J. (Mario James), 1976-

    2007-01-01

    This thesis presents the development and implementation of approximate dynamic programming methods used to manage multi-agent systems. The purpose of this thesis is to develop an architectural framework and theoretical ...

  19. Sustainable Energy Utility (SEU)- Agricultural Loan Program

    Broader source: Energy.gov [DOE]

    Delaware Sustainable Energy Utility (DESEU) offers customized loans for agricultural customer as a part of DESEU’s revolving loan program. Program applications are accepted on a rolling basis, and...

  20. Sustainable Electric Utility (SEU)- SREC Purchase Program

    Broader source: Energy.gov [DOE]

    SREC purchase program is a joint incentive of Delaware Division of Energy and Climate (DNREC) and the state’s Sustainable Energy Utility (SEU). The program offers a standard onetime payment of $450...

  1. NUGs & IPPs: The Utility-Customer Relationship 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1990-01-01

    . Involve regulatory staff. Yes, you read that correctly. We believe part f today's problem is that utilities tend to talk 0 regulatory staff only through "proceedings" an(l "declaratory requests." A collaborative pro s similar to that used...

  2. Owatanna Public Utilities- Solar Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    In order to obtain eligibility, customers must agree to a net-metering and interconnection contract with Owatanna Public Utilities. An energy audit must be performed prior to system installation...

  3. Light Duty Utility Arm System hot test

    SciTech Connect (OSTI)

    Howden, G.F.; Conrad, R.B.; Kiebel, G.R.

    1996-02-01

    This Engineering Task Plan describes the scope of work and cost for implementing a hot test of the Light Duty Utility Arm System in Tank T-106 in September 1996.

  4. Central Lincoln People's Utility District - Renewable Energy...

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

    PV (Residential): 2,000 PV (Commercial): 5,000 Solar Water Heating: 800 Wind: 5,000 Hydro Electric: 5,000 Program Info Sector Name Utility Administrator Central Lincoln...

  5. Bryan Texas Utilities- SmartHOME Program

    Broader source: Energy.gov [DOE]

    The Bryan Texas Utilities (BTU) SmartHOME Programs offers incentives to owners of single- and multi-family homes for insulation, windows, and solar screens.The incentive amount may not be less than...

  6. Modeling order guidelines to improve truckload utilization

    E-Print Network [OSTI]

    Banik, Jaya

    2011-01-01

    Freight vehicle capacity, whether it be road, ocean or air transport, is highly underutilized. This under-utilization presents an opportunity for companies to reduce their vehicular traffic and reduce their carbon footprint ...

  7. Utility FGD survey, January--December 1988

    SciTech Connect (OSTI)

    Hance, S.L.; McKibben, R.S.; Jones, F.M. )

    1991-09-01

    The Utility FGD Survey report, which is generated by a computerized data base management system, represents a survey of operational and planned domestic utility flue gas desulfurization (FGD) systems. It summarizes information contributed by the utility industry, system and equipment suppliers, system designers, research organizations, and regulatory agencies. The data cover system design, fuel characteristics, operating history, and actual system performance. Also included is a unit-by-unit discussion of problems and solutions associated with the boilers, scrubbers, and FGD systems. The development status (operational, under construction, or in the planning stages), system supplier, process, waste disposal practice, and regulatory class are tabulated alphabetically by utility company. Simplified process flow diagrams of FGD systems, definitions, and a glossary of terms are attached to the report. Current data for domestic FGD systems show systems in operation, systems under construction, and systems planned. The current total FGD-controlled capacity in the United States is 67,091 MW.

  8. Essays on the determinants of healthcare utilization

    E-Print Network [OSTI]

    Easterbrook, Kathleen Fehring

    2015-01-01

    The first chapter investigates how hospital mergers affect technology adoption and utilization. I analyze the mergers of five for-profit hospital chains in a difference-in-difference framework, comparing markets in which ...

  9. City of Lompoc Utilities- PV Rebate Program

    Broader source: Energy.gov [DOE]

    City of Lompoc Utilities provides rebates to its electric customers who purchase and install photovoltaic (PV) systems. The rebate is $1.00 per watt-AC. The incentive amount may not exceed 50% the...

  10. Farmington Electric Utility System- Net Metering

    Broader source: Energy.gov [DOE]

    Farmington Electric, a municipal utility, offers net metering to residential customers with systems up to 10 kilowatts (kW) in capacity. This option is available for photovoltaic (PV), wind, hydro...

  11. Financing for Federal Utility Energy Service Contracts

    Office of Energy Efficiency and Renewable Energy (EERE)

    Financing is a significant portion of utility energy service contract (UESC) costs. Experience shows several things the federal government can do to get the best value by reducing UESC financial transaction costs and interest.

  12. Federal Utility Partnership Working Group Industry Commitment

    Broader source: Energy.gov [DOE]

    Investor-owned electric utility industry members of the Edison Electric Institute pledge to assist Federal agencies in achieving energy-saving goals. These goals are set in the Energy Policy Act of...

  13. Energy Efficiency in Process Plant Utilities 

    E-Print Network [OSTI]

    Aggarwal, S.

    2001-01-01

    This article highlights some aspects of utility systems design and operations for energy efficiency. After years of relative stability, the energy costs have risen substantially. Electricity rates vary by the hour and in ...

  14. The Utilities' Role in Conservation and Cogeneration 

    E-Print Network [OSTI]

    Mitchell, R. C., III

    1982-01-01

    The electric utility industry is uniquely qualified and positioned to serve as an effective 'deliverer' of energy conservation services and alternative energy supply options, such as cogeneration, rather than merely as a 'facilitator...

  15. A Utility-Affiliated Cogeneration Developer Perspective 

    E-Print Network [OSTI]

    Ferrar, T. A.

    1985-01-01

    This paper will address cogeneration from a utility-affiliated cogeneration developer perspective on cogeneration as it relates to the development and consumption of power available from a cogeneration project. It will also go beyond...

  16. Colorado Springs Utilities- Renewable Energy Rebate Program

    Broader source: Energy.gov [DOE]

    Through its Renewable Energy Rebate Program, Colorado Springs Utilities (CSU) offers a rebate to customers who install grid-connected solar-electric (photovoltaic, or PV) systems and solar water ...

  17. Solar: A Clean Energy Source for Utilities

    SciTech Connect (OSTI)

    Solar Energy Technologies Program

    2010-09-28

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts with utilities to remove the technical, regulatory, and market challenges they face in deploying solar technologies.

  18. Groton Utilities- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Groton Utilities offers a variety of rebates to residential customers for the purchase and installation of energy efficient equipment. Rebates are available for CFLs, HVAC, HVAC controls, and heat...

  19. Utilizing optimization in municipal stormwater management 

    E-Print Network [OSTI]

    Dorman, Stephen Paul

    1995-01-01

    planning methodology which utilizes an optimization routine as its primary decision making tool. A thorough literature review presents the historical and current trends in the general area of stormwater quality. A detailed explanation and analysis...

  20. Drones de surfaces et Gliders Capacits utiles ,

    E-Print Network [OSTI]

    Lherminier, Pascale

    lfremer 1 Drones de surfaces et Gliders Capacités « utiles » , « contraintes opérationnelles » V, ni aux navires de pêches. Réglementation maritime applicable aux drones de surface #12;lfremer 3 escortés est incertaine (syndrome trans- tasmanienne! Drone

  1. Waste Heat Utilization System Property Tax Exemption

    Broader source: Energy.gov [DOE]

    Waste heat utilization systems are facilities and equipment for the recovery of waste heat generated in the process of generating electricity and the use of such heat to generate additional elect...

  2. Industrial Utilization of Coal-Oil Mixtures 

    E-Print Network [OSTI]

    Dunn, J. E.; Hawkins, G. T.

    1982-01-01

    Coal-oil mixtures (COM) are receiving increasing interest as economical alternatives to residual fuel oil and natural gas used in heavy industrial and utility applications. Four basic approaches are currently employed in the manufacture of COM...

  3. Approximate Description of the Mandelbrot Set. Thermodynamic Analogy

    E-Print Network [OSTI]

    O. B. Isaeva; S. P. Kuznetsov

    2005-04-29

    Analogy between an approximate version of Feigenbaum renormalization group analysis in complex domain and the phase transition theory of Yang-Lee (based on consideration of formally complexified thermodynamic values) is discussed. It is shown that the Julia sets of the renormalization transformation correspond to the approximation of Mandelbrot set of the original map. New aspects of analogy between the theory of dynamical systems and the phase transition theory are uncovered.

  4. Resonant-state expansion Born Approximation applied to Schrodinger's Equation

    E-Print Network [OSTI]

    Doost, M B

    2015-01-01

    The RSE Born Approximation is a new scattering formula in Physics, it allows the calculation of strong scattering via the Fourier transform of the scattering potential and Resonant-states. In this paper I apply the RSE Born Approximation to Schr\\"odinger's Equation. The resonant-states of the system can be calculated using the recently discovered RSE perturbation theory and normalised correctly to appear in spectral Green's functions via the flux volume normalisation.

  5. Mean field approximation for noisy delay coupled excitable neurons

    E-Print Network [OSTI]

    Nikola Buric; Dragana Rankovic; Kristina Todorovic; Nebojsa Vasovic

    2010-03-26

    Mean field approximation of a large collection of FitzHugh-Nagumo excitable neurons with noise and all-to-all coupling with explicit time-delays, modelled by $N\\gg 1$ stochastic delay-differential equations is derived. The resulting approximation contains only two deterministic delay-differential equations but provides excellent predictions concerning the stability and bifurcations of the averaged global variables of the exact large system.

  6. Utility System Simulation: A Nonlinear Approach 

    E-Print Network [OSTI]

    Delk, S. R.

    1988-01-01

    SIMULATION: A NONLINEAR APPROACH STEPHEN R. DELK, P.E. Owner The MESA Company The Woodlands, Texas ABSTRACT Computer simulation of plant utility systems allows an engineer to rapidly I) analyze operation changes, 2) analyze design changes..., and 3) optimize the steam/electric system for the lowest operating cost. MESA (Modular Energy System Analyzer) is a PC-based computer program that can be configured to accurately simulate plant utility systems. MESA uses a modular modeling approach...

  7. The Sacramento power utility experience in solar

    SciTech Connect (OSTI)

    Smeloff, E. [Sacramento Municipal Utility District (SMUD), CA (United States)

    1993-12-31

    An overview of the development of three solar power technologies for use in Sacramento, California is provided. A central receiver power plant, Solar One, is being converted to a molten salt design with thermal energy storage by the Sacramento Municipal Utility District (SMUD) and six other utilities. SMUD is also investigating a solar dish/sterling engine system and technologies to reduce photovoltaic conversion costs.

  8. School Focused Utility Programs in Texas 

    E-Print Network [OSTI]

    Santos, B.; Negley, M.

    2012-01-01

    efficiency program implementers for utilities in Texas ? Who we are and what we do ? Energy Efficiency (EE) opportunities in schools ? Eligible EE Measures ? Ineligible EE measures ? Resources to help ? Educational Facilities Program ? CenterPoint..., generate $315M savings on electric bills ? Employ 900+, 25 offices nationwide, 80 clients in 25 states, headquartered in Austin ? 2011 CLEAResult ? All rights reserved. Select School Programs - State Sponsored Incentives Utility Program Name AEP...

  9. What Marketing Strategies Make Sense for Utilities 

    E-Print Network [OSTI]

    Davis, T. D.

    1989-01-01

    MARKETING STRATEGIES MAKE SENSE FOR UTILITIES TODD D. DAVIS Senior Vice President Synergic Resources Corporation Bala CYnwyd, Pennsylvania BACKGROUND The principles of excellence that drive businesJ apply equally to utilities. The important... programs and services strategy to customers. l Need To Identify Customer I Advice on energy efficient design Friendly Systems and systems 24 hours direct access Advice on adding and replacing energy using equipment Fig"e 1. U',",i" M,,' Mon...

  10. Industry/Utility Partnerships: Formula for Success 

    E-Print Network [OSTI]

    Smith, W. R.; Spriggs, H. D.

    1995-01-01

    /UTILITY PARTNERSHIPS: FORMULA FOR SUCCESS William R. Smith, PE, Business Development, Houston Lighting & Power Company, Houston, TX 77046 H. D. Spriggs, PhD, President, Matrix 2000, Leesburg, VA 22075 ABSTRACT Industry/utility partnerships are created when... be a strong partnership between HL&P and its customers. HL&P must help them to find real solutions to their most pressing problems and both parties must win. HL&P's customers must keep their costs low, maintain operating flexibility, meet...

  11. Choosing the Summary Statistics and the Acceptance Rate in Approximate Bayesian

    E-Print Network [OSTI]

    Blum, Michael G. B.

    Choosing the Summary Statistics and the Acceptance Rate in Approximate Bayesian Computation or not. In this paper, I incorporate Approximate Bayesian Computation into a local Bayesian regression Computation, evidence approximation, empirical Bayes, Bayesian local regression 1 Introduction Approximate

  12. NOx Control for Utility Boiler OTR Compliance

    SciTech Connect (OSTI)

    Hamid Farzan; Jennifer L. Sivy

    2005-07-30

    Babcock & Wilcox Power Generation Group (B&W) and Fuel Tech, Inc. (Fuel Tech) teamed to evaluate an integrated solution for NO{sub x} control comprised of B&W's DRB-4Z{reg_sign} low-NO{sub x} pulverized coal (PC) burner technology and Fuel Tech's NO{sub x}OUT{reg_sign}, a selective non-catalytic reduction (SNCR) technology, capable of meeting a target emission limit of 0.15 lb NO{sub x}/10{sup 6} Btu. In a previous project sponsored by the U.S. Department of Energy (DOE), promising results were obtained with this technology from large-scale testing in B&W's 100-million Btu/hr Clean Environment Development Facility (CEDF) which simulates the conditions of large coal-fired utility boilers. Under the most challenging boiler temperatures at full load conditions, NO{sub x} emissions of 0.19 lb/10{sup 6} Btu were achieved firing Powder River Basin coal while controlling ammonia slip to less than 5 ppm. At a 40 million Btu/hr firing rate, NO{sub x} emissions were as low as 0.09 lb/10{sup 6} Btu. Improved performance with this system was proposed for this new program with injection at full load via a convective pass multiple nozzle lance (MNL) in front of the superheater tubes or in the convective tube bank. Convective pass lances represent the current state-of-the-art in SNCR and needed to be evaluated in order to assess the full potential of the combined technologies. The objective of the program was to achieve a NO{sub x} level below 0.15 lb/10{sup 6} Btu (with ammonia slip of less than 5 ppm) in the CEDF using PRB coal and B&W's DRB-4Z{reg_sign} low-NO{sub x} pulverized coal (PC) burner in combination with dual zone overfire air ports and Fuel Tech's NO{sub x}OUT{reg_sign} System. Commercial installations of B&W's low-NO{sub x} burner, in combination with overfire air ports using PRB coal, have demonstrated a NO{sub x} level of 0.15 to 0.2 lb/10{sup 6} Btu under staged combustion conditions. The proposed goal of the combustion system (no SNCR) for this project is a NO{sub x} level at 0.15 lb/10{sup 6} Btu. The NO{sub x} reduction goal for SNCR is 25% from the low-NO{sub x} combustion emission levels. Therefore, overall NO{sub x} emissions would approach a level of 0.11 lb/10{sup 6} Btu in commercial installation. The goals of the program were met. At 100% load, using the MNL for very low baseline NO{sub x} (0.094 to 0.162 lb/10{sup 6} Btu depending on burner stoichiometry), an approximately 25% NO{sub x} reduction was achieved (0.071 to 0.124 lb/10{sup 6} Btu) while maintaining NH{sub 3} slip less than 6.4 ppm. At 60% load, using MNL or only wall-injectors for very low baseline NO{sub x} levels, more than 30% NO{sub x} reduction was achieved. Although site specific economic evaluation is required for each unit, our economic evaluation of DRB-4Z{reg_sign} burner and SNCR for a 500 MW{sub e} plant firing PRB shows that the least cost strategy is low-NO{sub x} burner and OFA at a cost of $210 to $525 per ton of NO{sub x} removed. Installation of SNCR allows the utilities to sell more NO{sub x} credit and it becomes economical when NO{sub x} credit cost is more than $5,275 per ton of NO{sub x}.

  13. Reading the Tea Leaves: How Utilities in the West Are Managing Carbon Regulatory Risk in their Resource Plans

    SciTech Connect (OSTI)

    Barbose, Galen; Wiser, Ryan; Phadke, Amol; Goldman, Charles

    2008-02-01

    The long economic lifetime and development lead-time of many electric infrastructure investments requires that utility resource planning consider potential costs and risks over a lengthy time horizon. One long-term -- and potentially far-reaching -- risk currently facing the electricity industry is the uncertain cost of future carbon dioxide (CO2) regulations. Recognizing the importance of this issue, many utilities (sometimes spurred by state regulatory requirements) are beginning to actively assess carbon regulatory risk within their resource planning processes, and to evaluate options for mitigating that risk. However, given the relatively recent emergence of this issue and the rapidly changing political landscape, methods and assumptions used to analyze carbon regulatory risk, and the impact of this analysis on the selection of a preferred resource portfolio, vary considerably across utilities. In this study, we examine the treatment of carbon regulatory risk in utility resource planning, through a comparison of the most-recent resource plans filed by fifteen investor-owned and publicly-owned utilities in the Western U.S. Together, these utilities account for approximately 60percent of retail electricity sales in the West, and cover nine of eleven Western states. This report has two related elements. First, we compare and assess utilities' approaches to addressing key analytical issues that arise when considering the risk of future carbon regulations. Second, we summarize the composition and carbon intensity of the preferred resource portfolios selected by these fifteen utilities and compare them to potential CO2 emission benchmark levels.

  14. Variational principles with Padé approximants for tearing mode analysis

    SciTech Connect (OSTI)

    Cole, Andrew J.; Finn, John M.

    2014-03-15

    Tearing modes occur in several distinct physical regimes, and it is often important to compute the inner layer response for these modes with various effects. There is a need for an approximate and efficient method of solving the inner layer equations in all these regimes. In this paper, we introduce a method of solving the inner layer equations based on using a variational principle with Padé approximants. For all the regimes considered, the main layer equations to be solved are inhomogeneous, and Padé approximants give a convenient and efficient method of satisfying the correct asymptotic behavior at the edge of the layer. Results using this variational principle—Padé approximant method in three of these regimes is presented. These regimes are the constant-? resistive-inertial (RI) regime, the constant-? viscoresistive regime, and the non-constant-? inviscid tearing regime. The last regime includes the constant-? RI regime and the inertial regime. The results show that reasonable accuracy can be obtained very efficiently with Padé approximants having a small number of parameters.

  15. A representative individual from Arrovian aggregation of parametric individual utilities

    E-Print Network [OSTI]

    A representative individual from Arrovian aggregation of parametric individual utilities social choice theory Assumptions Assumption on decisive coalitions Assumptions on individual utility functions Assumptions on the social welfare function Results The socially acceptable utility function

  16. Fourth-post-Newtonian-exact approximation to General Relativity

    E-Print Network [OSTI]

    David Brizuela; Gerhard Schaefer

    2010-04-12

    An approximation to General Relativity is presented that agrees with the Einstein field equations up to and including the fourth post-Newtonian (PN) order. This approximation is formulated in a fully constrained scheme: all involved equations are explicitly elliptic except the wave equation that describes the two independent degrees of freedom of the gravitational field. The formalism covers naturally the conformal-flat-condition (CFC) approach by Isenberg, Wilson, and Mathews and the improved second PN-order exact approach CFC+. For stationary configurations, like Kerr black holes, agreement with General Relativity is achieved even through 5PN order. In addition, a particularly interesting 2PN-exact waveless approximation is analyzed in detail, which results from imposing more restrictive conditions. The proposed scheme can be considered as a further development on the waveless approach suggested by Schaefer and Gopakumar [Phys. Rev. D {\\bf 69}, 021501 (2004)].

  17. Assessment of effective parameters on dilution using approximate reasoning methods in longwall mining method, Iran coal mines

    E-Print Network [OSTI]

    Owladeghaffari, H; Saeedi, G H R

    2008-01-01

    Approximately more than 90% of all coal production in Iranian underground mines is derived directly longwall mining method. Out of seam dilution is one of the essential problems in these mines. Therefore the dilution can impose the additional cost of mining and milling. As a result, recognition of the effective parameters on the dilution has a remarkable role in industry. In this way, this paper has analyzed the influence of 13 parameters (attributed variables) versus the decision attribute (dilution value), so that using two approximate reasoning methods, namely Rough Set Theory (RST) and Self Organizing Neuro- Fuzzy Inference System (SONFIS) the best rules on our collected data sets has been extracted. The other benefit of later methods is to predict new unknown cases. So, the reduced sets (reducts) by RST have been obtained. Therefore the emerged results by utilizing mentioned methods shows that the high sensitive variables are thickness of layer, length of stope, rate of advance, number of miners, type of...

  18. Double Shell Tank (DST) Utilities Specification

    SciTech Connect (OSTI)

    SUSIENE, W.T.

    2000-04-27

    This specification establishes the performance requirements and provides the references to the requisite codes and standards to he applied during the design of the Double-Shell Tank (DST) Utilities Subsystems that support the first phase of waste feed delivery (WFD). The DST Utilities Subsystems provide electrical power, raw/potable water, and service/instrument air to the equipment and structures used to transfer low-activity waste (LAW) and high-level waste (HLW) to designated DST staging tanks. The DST Utilities Subsystems also support the equipment and structures used to deliver blended LAW and HLW feed from these staging tanks to the River Protection Project (RPP) Privatization Contractor facility where the waste will be immobilized. This specification is intended to be the basis for new projects/installations. This specification is not intended to retroactively affect previously established project design criteria without specific direction by the program.

  19. Trigonometric Pade approximants for functions with regularly decreasing Fourier coefficients

    SciTech Connect (OSTI)

    Labych, Yuliya A; Starovoitov, Alexander P [Gomel State University, Gomel (Belarus)

    2009-08-31

    Sufficient conditions describing the regular decrease of the coefficients of a Fourier series f(x)=a{sub 0}/2 + {sigma} a{sub n} cos kx are found which ensure that the trigonometric Pade approximants {pi}{sup t}{sub n,m}(x;f) converge to the function f in the uniform norm at a rate which coincides asymptotically with the highest possible one. The results obtained are applied to problems dealing with finding sharp constants for rational approximations. Bibliography: 31 titles.

  20. L^p Bernstein Inequalities and Radial Basis Function Approximation 

    E-Print Network [OSTI]

    Ward, John P.

    2012-10-19

    are bounded in terms of certain measurements of the set X. The error of approximation will typically be given in terms of the ll distance hX = sup x2Rd inf 2X jjx jj2 ; which measures how far a point in Rd can be from X, and the stability of the ap... will typically be restricted to sets X for which hX is comparable to qX , and sets for which the mesh ratio X := hX=qX is bounded by a constant will be called quasi-uniform. In this paper, we will only consider approximation spaces SX( ) where X is quasi...

  1. On the approximation of crack shapes found during inservice inspection

    SciTech Connect (OSTI)

    Bhate, S.R.; Chawla, D.S.; Kushwaha, H.S. [Bhabha Atomic Research Centre, Bombay (India)] [and others

    1997-04-01

    This paper addresses the characterization of axial internal flaw found during inservice inspection of a pipe. J-integral distribution for various flaw shapes is obtained using line spring finite, element method. The peak J-value and its distribution across the crack is found to be characteristic feature of each shape. The triangular shape yields peak J-value away from the center, the point of depth. The elliptic approximation results in large overestimate of J-value for unsymmetric flaws. Triangular approximation is recommended for such flaws so that further service can be obtained from the component.

  2. Creative financing of landfill gas utilization projects

    SciTech Connect (OSTI)

    Peters, J.P. Jr.; Laughlin, M.F.; McGuigan, M.J.

    1996-11-01

    The landfill gas utilization industry has gone through profound change in the last ten years and is in for further changes in the coming years. The first change is the probable expiration of Section 29 tax credits for newly developed projects and the second is the upcoming NSPS mandate to capture fugitive LFG emission from our nations larger landfills. In order to provide for the capital needs of LFG utilization project developers, lenders and investors must adapt to the changing nature of the industry as well. Lyon Credit Corporation has provided senior and subordinated financing as well as lease financing for the LFG utilization industry for the last three years. During this time, LCC has had to adapt its product offerings to meet the continuing needs of the borrowers in this industry. This presentation will focus on the changing nature of the industry and its effect on the economics, capital and financing requirements of newly developed LFG utilization projects. The two fundamental changes which have drastically altered the way projects are structured and financed include the changing nature of the LFG project product end-user and various regulatory and legislative measures which have significantly impacted the responsibilities of the project owner/developer and the future profitability of all LFG utilization projects. The successful LFG utilization project developers will be those who recognize that these changes are permanent departures from past practices, and those who will seek to exploit opportunities created by these changes. The lenders and investors to this industry will likewise have to adapt with these changes in order to continue to provide needed capital to this growing industry.

  3. Fusion Utility in the Knudsen Layer

    SciTech Connect (OSTI)

    Davidovits, Seth; Fisch, Nathaniel J.

    2014-08-01

    In inertial confi#12;nement fusion, the loss of fast ions from the edge of the fusing hot-spot region reduces the reactivity below its Maxwellian value. The loss of fast ions may be pronounced because of the long mean free paths of fast ions, compared to those of thermal ions. We introduce a fusion utility function to demonstrate essential features of this Knudsen layer e#11;ffect, in both magnetized and unmagnetized cases. The fusion utility concept is also used to evaluate restoring the reactivity in the Knudsen layer by manipulating fast ions in phase space using waves.

  4. CONCRETE SUPPORT DESIGN FOR MISCELLANEOUS ESF UTILITIES

    SciTech Connect (OSTI)

    T.A. Misiak

    1999-06-21

    The purpose and objective of this analysis is to design concrete supports for the miscellaneous utility equipment used at the Exploratory Studies Facility (ESF). Two utility systems are analyzed: (1) the surface collection tanks of the Waste Water System, and (2) the chemical tracer mixing and storage tanks of the Non-Potable Water System. This analysis satisfies design recommended in the Title III Evaluation Reports for the Subsurface Fire Water System and Subsurface Portion of the Non-Potable Water System (CRWMS M&O 1998a) and Waste Water Systems (CRWMS M&O 1998b).

  5. The Utility Relationship to its Key Industries 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1986-01-01

    then thpy promised never, ever to build another powerplant. Wi th that as a backdrop, let's takt' a closer look at the industrial-util ity relatiunship, 1 t is no di fffll'(,nt from any athel' relationship. Both parties must be honeR t and open... resistance heat against gas where it doesn't belong. Now let's get on the positive side of the picture. Utilities should indicate it pro-industrial posture. Start with your own employees. no they patronize their business. Do they buy their products...

  6. Fusion utility in the Knudsen layer

    SciTech Connect (OSTI)

    Davidovits, Seth; Fisch, Nathaniel J.

    2014-09-15

    In inertial confinement fusion, the loss of fast ions from the edge of the fusing hot-spot region reduces the reactivity below its Maxwellian value. The loss of fast ions may be pronounced because of the long mean free paths of fast ions, compared with those of thermal ions. We introduce a fusion utility function to demonstrate essential features of this Knudsen layer effect, in both magnetized and unmagnetized cases. The fusion utility concept is also used to evaluate the restoring reactivity in the Knudsen layer by manipulating fast ions in phase space using waves.

  7. Delano Municipal Utilities | 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 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi: EnergyS ADehumidifiersMunicipal Utilities

  8. Utility Rate | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (Utility Company) JumpGTZ ClimateFeedUratMaringaTaquaraUtahUtility

  9. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility Rate Home > Utility Rate

  10. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility Rate Home > Utility

  11. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility Rate Home >Utility Rate

  12. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility Rate Home >Utility

  13. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility Rate HomecommercialUtility

  14. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility Rate Home >

  15. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility Rate Home

  16. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility Rate

  17. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtility

  18. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtilityRate Home >

  19. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtilityRate Home

  20. Utility Rate | OpenEI Community

    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 EISTJThin FilmUnited States:UserLaborUtility RateUtilityRate

  1. Utilization Technology Institute | 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 EISTJThin FilmUnited States:UserLaborUtilityUtilization Technology

  2. DOE New Madrid Seismic Zone Electric Utility Workshop Summary...

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

    DOE New Madrid Seismic Zone Electric Utility Workshop Summary Report - August 2010 DOE New Madrid Seismic Zone Electric Utility Workshop Summary Report - August 2010 The DOE New...

  3. Utility Partnership Program Agency Partners | Department of Energy

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

    agencies are partners in the Utility Partnership Program or have engaged in a utility energy service contract project. Agricultural Research Service Bureau of Prisons Bureau of...

  4. Analysis of Low-Temperature Utilization of Geothermal Resources...

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

    Low-Temperature Utilization of Geothermal Resources Analysis of Low-Temperature Utilization of Geothermal Resources Project objectives: Techno-economic analysis of the potential of...

  5. Utah - UDOT - Accommodation of Utilities and the Control and...

    Open Energy Info (EERE)

    of Utilities and the Control and Protection of State Highway Rights of Way. Salt Lake County, Utah. Utah Department of Transportation. Accommodation of Utilities and...

  6. Diversifying Project Portfolios for Utility Energy Service Contracts...

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

    Service Contracts Diversifying Project Portfolios for Utility Energy Service Contracts Building a diversified project portfolio enhances utility energy service contracts (UESCs)...

  7. Industrial Utility Webinar: Public Power Financial Incentive Programs

    SciTech Connect (OSTI)

    2010-05-14

    The Industrial Utility Webinars focus on providing utilities with information on how to develop sucessful energy efficeincy programs for industrial energy consumers.

  8. Competitive Subcontract Selection in Utility Energy Service Contracts

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation covers subcontract selections in utility energy service contracts and is given at the Spring 2011 Federal Utility Partnership Working Group (FUPWG) meeting.

  9. Highly Energy Efficient Directed Green Liquor Utilization (D...

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

    Highly Energy Efficient Directed Green Liquor Utilization (D-GLU) Pulping Highly Energy Efficient Directed Green Liquor Utilization (D-GLU) Pulping This factsheet describes a...

  10. Development of Fuel-Flexible Combustion Systems Utilizing Opportunity...

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

    Fuel-Flexible Combustion Systems Utilizing Opportunity Fuels in Gas Turbines - Fact Sheet, May 2014 Development of Fuel-Flexible Combustion Systems Utilizing Opportunity Fuels in...

  11. Public Utility Regulatory Policies Act of 1978 (PURPA) as Applicable...

    Energy Savers [EERE]

    List of Covered Electric Utilities. Public Utility Regulatory Policies Act of 1978 (PURPA) as Applicable to the Energy Policy Act of 2005 (EPACT 2005) - List of Covered Electric...

  12. An Updated Assessement of Copper Wire Thefts from Electric Utilities...

    Office of Environmental Management (EM)

    An Updated Assessement of Copper Wire Thefts from Electric Utilities - October 2010 An Updated Assessement of Copper Wire Thefts from Electric Utilities - October 2010 The U.S....

  13. Federal Utility Partnership Working Group 2011 Meeting: Washington...

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

    2011 Meeting: Washington Update Federal Utility Partnership Working Group 2011 Meeting: Washington Update Presentation-given at the Fall 2011 Federal Utility Partnership Working...

  14. Low Cost High Concentration PV Systems for Utility Power Generation...

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

    Residential and Utility Solar Power Generating Systems SunPower,Low Cost Thin Film Building-Integrated PV Systems Low Cost High Concentration PV Systems for Utility Power...

  15. Cost-Effectiveness Tests and Measuring Like a Utility | Department...

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

    Cost-Effectiveness Tests and Measuring Like a Utility Cost-Effectiveness Tests and Measuring Like a Utility Better Buildings Residential Data and Evaluation Peer Exchange Call...

  16. Utility Partnerships Webinar Series: State Policies to Promote...

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

    PacifiCorp (IOUs) * Public Utilities (most all in state w industrial load) * Tacoma Power * Clark Public Utilities * City of Port Angeles State Energy Efficiency (SEE)...

  17. Transitioning to a Utility Funded Program Environment: What Do...

    Energy Savers [EERE]

    to a Utility Funded Program Environment: What Do I Need to Know? Program Sustainability Peer Exchange Call: Transitioning to a Utility Funded Program Environment: What Do...

  18. Utility to Purchase Electricity from Innovative DOE-Supported...

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

    Utility to Purchase Electricity from Innovative DOE-Supported Clean Coal Project Utility to Purchase Electricity from Innovative DOE-Supported Clean Coal Project January 17, 2012 -...

  19. Low-Cost Electrochemical Compressor Utilizing Green Refrigerants...

    Office of Environmental Management (EM)

    Low-Cost Electrochemical Compressor Utilizing Green Refrigerants for HVAC Applications Low-Cost Electrochemical Compressor Utilizing Green Refrigerants for HVAC Applications...

  20. Utility Energy Efficiency Schemes: Savings Obligations and Trading...

    Open Energy Info (EERE)

    Utility Energy Efficiency Schemes: Savings Obligations and Trading **Subscription Required** Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Utility Energy Efficiency...

  1. Collaborative Utility Task Force Partners with DOE to Develop...

    Energy Savers [EERE]

    Collaborative Utility Task Force Partners with DOE to Develop Cyber Security Requirements for Advanced Metering Infrastructure Collaborative Utility Task Force Partners with DOE to...

  2. Comments from The National Association of Regulatory Utility...

    Energy Savers [EERE]

    Comments from The National Association of Regulatory Utility Commissioners (NARUC) on the Smart Grid RFI Comments from The National Association of Regulatory Utility Commissioners...

  3. City Utilities of Springfield Missouri Comments on Smart Grid...

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

    Utilities of Springfield Missouri Comments on Smart Grid RFI: Addressing Policy and Logistical Challenges City Utilities of Springfield Missouri Comments on Smart Grid RFI:...

  4. Energy Storage Systems 2007 Peer Review - Utility & Commercial...

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

    Utility & Commercial Applications Presentations Energy Storage Systems 2007 Peer Review - Utility & Commercial Applications Presentations The U.S. DOE Energy Storage Systems...

  5. Secretary Moniz Announces the Launch of New Veterans' Utility...

    Energy Savers [EERE]

    Moniz Announces the Launch of New Veterans' Utility Industry Transition Effort Secretary Moniz Announces the Launch of New Veterans' Utility Industry Transition Effort June 8, 2015...

  6. Evaluate Feasibility of Sustainable and Economical Utilization of Biomass

    E-Print Network [OSTI]

    Chen, Deming

    Evaluate Feasibility of Sustainable and Economical Utilization of Biomass Gasification Byproducts.istc.illinois.edu #12;TR-057 Evaluate Feasibility of Sustainable and Economical Utilization of Biomass Gasification

  7. Project Profile: Hybrid Organic Silicone HTF Utilizing Endothermic...

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

    Hybrid Organic Silicone HTF Utilizing Endothermic Chemical Reactions for Latent Heat Storage Project Profile: Hybrid Organic Silicone HTF Utilizing Endothermic Chemical Reactions...

  8. The economics of the Internet: Utility, utilization, pricing, and Quality of Andrew Odlyzko

    E-Print Network [OSTI]

    Odlyzko, Andrew M.

    The economics of the Internet: Utility, utilization, pricing, and Quality of Service Andrew Odlyzko economically for all transmissions on the Internet? Current work assumes that it cannot, and concentrates on providing differentiated service levels. However, an examination of patterns of use and economics of data

  9. Summary of Time Period-Based and Other Approximation Methods for Determining the Capacity Value of Wind and Solar in the United States: September 2010 - February 2012

    SciTech Connect (OSTI)

    Rogers, J.; Porter, K.

    2012-03-01

    This paper updates previous work that describes time period-based and other approximation methods for estimating the capacity value of wind power and extends it to include solar power. The paper summarizes various methods presented in utility integrated resource plans, regional transmission organization methodologies, regional stakeholder initiatives, regulatory proceedings, and academic and industry studies. Time period-based approximation methods typically measure the contribution of a wind or solar plant at the time of system peak - sometimes over a period of months or the average of multiple years.

  10. A STOCHASTIC APPROXIMATION APPROACH TO LOAD SHEDDING IN POWER NETWORKS

    E-Print Network [OSTI]

    Marques, Antonio Garcia

    storage. Ahead of a scheduling horizon, the utility purchases energy based on forecasted demand on reduced dependency on non-replenishable resources such as oil and coal are driving the high integration to be made with respect to real-time energy procure- ment at unpredictable real-time prices versus shedding

  11. Design of Energy-Efficient Approximate Arithmetic Circuits 

    E-Print Network [OSTI]

    Shao, Botang

    2014-07-29

    -width squarer designs. To further reduce error and cost by utilizing extra signatures and don't cares, we demonstrate a 16-bit fixed-width squarer that improves the energy-delay-max error (EDE_(max)) by 15.81%....

  12. Approximations of very weak solutions to boundary-value problems.

    SciTech Connect (OSTI)

    Berggren, Martin Olof

    2003-03-01

    Standard weak solutions to the Poisson problem on a bounded domain have square-integrable derivatives, which limits the admissible regularity of inhomogeneous data. The concept of solution may be further weakened in order to define solutions when data is rough, such as for inhomogeneous Dirichlet data that is only square-integrable over the boundary. Such very weak solutions satisfy a nonstandard variational form (u, v) = G(v). A Galerkin approximation combined with an approximation of the right-hand side G defines a finite-element approximation of the very weak solution. Applying conforming linear elements leads to a discrete solution equivalent to the text-book finite-element solution to the Poisson problem in which the boundary data is approximated by L{sub 2}-projections. The L{sub 2} convergence rate of the discrete solution is O(h{sub s}) for some s {element_of} (0,1/2) that depends on the shape of the domain, asserting a polygonal (two-dimensional) or polyhedral (three-dimensional) domain without slits and (only) square-integrable boundary data.

  13. APPROXIMATION OF A TWOPHASE CONTINUOUS CASTING STEFAN PROBLEM

    E-Print Network [OSTI]

    APPROXIMATION OF A TWO­PHASE CONTINUOUS CASTING STEFAN PROBLEM Zhiming Chen \\Lambda Lishang Jiang y Abstract. The continuous casting Stefan problem is a mathematical model describing the solidification with convection of a material being cast continuously with a prescribed velocity. We propose a practical piecewise

  14. Accelerating Search of Approximate Match on Large Protein Sequence Databases

    E-Print Network [OSTI]

    Wang, Wei

    of supporting indexed search on large biological sequence databases since the construction cost of the index Yang 2 , Yi Xia 3 , Philip Yu 4 Keywords: protein sequence index, approximate match. Due. Building an appropriate index structure is one of the possibilities to achieve such a goal, which

  15. APPROXIMATION THEORY OF OUTPUT STATISTICS Dept. Information Systems

    E-Print Network [OSTI]

    Verdú, Sergio

    . In order to generate a ran- dom process we assume that a primary random source with an equiprobableAPPROXIMATION THEORY OF OUTPUT STATISTICS Te Sun Han Dept. Information Systems Senshu University-length) source coding rate of any finite-alphabet source, and a strong converse of the identijication coding

  16. Expected Approximation Guarantees for the Demand Matching Problem

    E-Print Network [OSTI]

    Boucher, Christina

    Expected Approximation Guarantees for the Demand Matching Problem C. Boucher D. Loker September 2006 Abstract The objective of the demand matching problem is to obtain the subset M of edges which if for each vertex v the total demand of edges in M incident to v is at most bv. In the case where each

  17. Approximability of Partitioning Graphs with Supply and Demand

    E-Print Network [OSTI]

    Demaine, Erik

    Approximability of Partitioning Graphs with Supply and Demand Takehiro Ito a,, Erik D. Demaine b vertex or a demand vertex and is assigned a positive real number, called the supply or the demand. Each demand vertex can receive "power" from at most one supply vertex through edges in G. One thus wishes

  18. Approximability of Partitioning Graphs with Supply and Demand

    E-Print Network [OSTI]

    Demaine, Erik

    Approximability of Partitioning Graphs with Supply and Demand (Extended Abstract) Takehiro Ito1 vertex or a demand vertex and is assigned a positive real number, called the supply or the demand. Each demand vertex can receive "power" from at most one supply vertex through edges in G. One thus wishes

  19. Approximability of Partitioning Graphs with Supply and Demand

    E-Print Network [OSTI]

    Demaine, Erik

    Approximability of Partitioning Graphs with Supply and Demand (Extended Abstract) Takehiro Ito 1 vertex or a demand vertex and is assigned a positive real number, called the supply or the demand. Each demand vertex can receive ``power'' from at most one supply vertex through edges in G. One thus wishes

  20. New approximate radial wave functions for power-law potentials

    E-Print Network [OSTI]

    Vladimir Kudryashov

    2007-09-26

    Radial wave functions for power-law potentials are approximated with the help of power-law substitution and explicit summation of the leading constituent WKB series. Our approach reproduces the correct behavior of the wave functions at the origin, at the turning points and far away from the turning points

  1. A new shallow approximation for tridimensional non-isothermal viscoplastic

    E-Print Network [OSTI]

    Saramito, Pierre

    . The risk assessments for volcanic lava flow pose a difficult challenge to numerical methods. Indeed approximated by an autoadaptive finite element method, based on the Rheolef C++ library, allowing to track with non-isothermal experimental measurements for a silicone oil dome. Next, the December 2010 eruption

  2. A Study of Approximate Data Management Techniques for Sensor Networks

    E-Print Network [OSTI]

    Martin, Ralph R.

    the monitoring operation of sensor nodes by efficiently using their limited energy, bandwidth and computation. The network can therefore be treated as a distributed sensor data management system. Sensor networks differA Study of Approximate Data Management Techniques for Sensor Networks Adonis Skordylis, Niki

  3. Approximate bisimulation for a class of stochastic hybrid systems

    E-Print Network [OSTI]

    Pappas, George J.

    , target tracking, robotics, and power systems [35]. The field of stochastic hybrid systems is a veryApproximate bisimulation for a class of stochastic hybrid systems (Invited Paper) Agung Julius of stochastic hybrid systems, namely, the jump linear stochastic systems (JLSS). The idea is based

  4. Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Liang, Weifa

    Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks Weifa Liang, Senior Member, IEEE Abstract--A wireless ad hoc network consists of mobile nodes that are equipped with energy on energy conservation in wireless ad hoc networks have been conducted. For example, energy efficient

  5. Aqua: A Fast Decision Support System Using Approximate Query Answers

    E-Print Network [OSTI]

    Gibbons, Phillip B.

    commercial relational DBMS. Aqua precomputes synopses (special sta- tistical summaries) of the original data and stores them in the DBMS. It provides approximate an- swers (with quality guarantees) by rewriting on top of any SQL- compliant DBMS managing a data warehouse. Aqua pre- computes statistical summaries

  6. Approximating many-body induction to efficiently describe molecular liquids

    E-Print Network [OSTI]

    Herbert, John

    on the structure and solvation dynamics of the excess electron (in the ground state) but does have a large impact as the structures and properties of molecular systems. This study focuses on approximating many-body electronic methods in order to allow "on-the-fly" energy and force evaluations in dynamical calculations

  7. Approximating Minimum-Power Degree and Connectivity Problems

    E-Print Network [OSTI]

    Kortsarz, Guy

    . The power con- sumption of a station determines its transmission range, and thus also the stations it can. Assigning power levels to the stations (nodes) determines the resulting communi- cation network. ConverselyApproximating Minimum-Power Degree and Connectivity Problems Guy Kortsarz Vahab S. Mirrokni Zeev

  8. 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

  9. Novel approximations for inference and learning in nonlinear dynamical systems

    E-Print Network [OSTI]

    Heskes, Tom

    Novel approximations for inference and learning in nonlinear dynamical systems Alexander Ypma #3 from marketing research. 1 Introduction Many real-world systems are nonlinear, dynamical and stochastic in nature. Inference and learning of nonlinear system models with hidden dynamics is a diÆcult task, which

  10. Exploiting Correlated Keywords to Improve Approximate Information Filtering

    E-Print Network [OSTI]

    Tryfonopoulos, Christos

    , Christos Tryfonopoulos, and Gerhard Weikum Databases and Information Systems Department Max-Planck Institut- scribe to information sources and be notified whenever new documents of interest are published. In approximate infor- mation filtering only selected information sources, that are likely to publish documents

  11. Approximating Radon measures on first--countable compact spaces

    E-Print Network [OSTI]

    Plebanek, Grzegorz

    Approximating Radon measures on first--countable compact spaces Grzegorz Plebanek (Wroc/law) Abstract The assertion every Radon measure defined on a first--countable compact space is uniformly regular under CH. In this note we consider some properties of finite Radon measures defined on compact spaces

  12. Approximation in Mechanism Design By JASON D. HARTLINE

    E-Print Network [OSTI]

    Hartline, Jason D.

    Approximation in Mechanism Design By JASON D. HARTLINE A mechanism gives a mapping between will arise in the equilibrium of selfish agent play. Mechanism design then considers the optimization question of what mechanisms have good outcomes in equilibrium. Optimal mechanism design searches

  13. Gluon Condensate in Pion Superfluid beyond Mean Field Approximation

    E-Print Network [OSTI]

    Yin Jiang; Pengfei Zhuang

    2011-03-04

    We study gluon condensate in a pion superfluid, through calculating the equation of state of the system in the Nambu-Jona-Lasinio model. While in mean field approximation the growing pion condensate leads to an increasing gluon condensate, meson fluctuations reduce the gluon condensate and the broken scalar symmetry can be smoothly restored at finite isospin density.

  14. Single-frequency approximation of the coupling ray theory

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    . Introduction There are two different high­frequency asymptotic ray theories with frequency­indepen- dent) demonstrated analytically that the high­frequency asymptotic error of the In: Seismic Waves in Complex 3­DSingle-frequency approximation of the coupling ray theory Ludek Klimes & Petr Bulant Department

  15. Asymptotic Approximations to the Distributed Activation Energy Model

    E-Print Network [OSTI]

    McGuinness, Mark

    Asymptotic Approximations to the Distributed Activation Energy Model M.J.McGuinness1 , E. Donskoi2 by a continuum distribution in activation energy of individual re- actions. An individual reaction is characterised by a pre-exponential coefficient and an activation energy. The distribution, usually Gaussian

  16. Continued fractions with low complexity: Transcendence measures and quadratic approximation

    E-Print Network [OSTI]

    Bugeaud, Yann

    expansion of an irrational algebraic number either is ultimately periodic (this is the case if, and only if. Theorems 3.2 and 3.3 give transcendence mea- sures for a class of transcendental numbers defined by theiContinued fractions with low complexity: Transcendence measures and quadratic approximation Yann

  17. NUMERICAL APPROXIMATION OF A MACROSCOPIC MODEL OF PEDESTRIAN FLOWS

    E-Print Network [OSTI]

    Chalons, Christophe

    NUMERICAL APPROXIMATION OF A MACROSCOPIC MODEL OF PEDESTRIAN FLOWS CHRISTOPHE CHALONS Abstract for the description of the flow of pedestrians. Solutions of the associated Riemann problem are known to be possibly in obtaining an efficient numerical scheme. Numerical evidences are proposed. Key words. macroscopic pedestrian

  18. NON-LINEAR FUNCTIONAL APPROXIMATION OF HETEROGENEOUS DYNAMICS

    E-Print Network [OSTI]

    in a latent variable model designed to account for both switching multi-scaling regimes and cascade system or resolution levels. We aim to design ad hoc approximation instruments dealing with a particularly complex in improving the volatility feature detection power. Then we show the good performance of greedy approxima

  19. CP-networks: semantics, complexity, approximations and extensions

    E-Print Network [OSTI]

    Walsh, Toby

    CP-networks: semantics, complexity, approximations and extensions F. Rossi, K. B. Venable Dept Constraint Computation Centre, University College Cork Cork, Ireland tw@4c.ucc.ie July 23, 2002 Abstract CP-networks are an elegant and compact qualitative framework for ex- pressing preferences. Unfortunately, reasoning with CP

  20. Robust Nonparametric Data Approximation of Point Sets via Data Reduction

    E-Print Network [OSTI]

    Durocher, Stephane

    , and the cardinality of Q is minimized among all such maximizing subsets of P. Our algorithms have respective running), where k optimizes one or more functions of P, where approximations are used to render vector-based features such as streets, rivers, or coastlines

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

    E-Print Network [OSTI]

    Fertin, Guillaume

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

  2. Approximate Dynamic Programming in Transportation and Logistics: A Unified Framework

    E-Print Network [OSTI]

    Powell, Warren B.

    Approximate Dynamic Programming in Transportation and Logistics: A Unified Framework Warren B Engineering Princeton University, Princeton, NJ 08544 European J. of Transportation and Logistics, Vol. 1, No optimization has enjoyed a rich place in transportation and logistics, where it repre- sents a mature field

  3. Utilizing Faceted Structures for Information Systems Design

    E-Print Network [OSTI]

    Priss, Uta

    Utilizing Faceted Structures for Information Systems Design Uta Priss, Elin Jacob School of Library will improve access, websites of three leading Library and Infor- mation Science [LIS] were examined and Information Science, Indiana University Bloomington ABSTRACT Even for the experienced information professional

  4. Classification and Utilization of Abstractions for Optimization

    E-Print Network [OSTI]

    Yi, Qing

    Classification and Utilization of Abstractions for Optimization Dan Quinlan1 , Markus Schordan2.sabjornsen@fys.uio.no Abstract. We define a novel approach to optimize the use of libraries within applications. We propose that library-defined abstractions be clas- sified to support their automated optimization and by leveraging

  5. Energy Conservation Utilizing Wireless Dimmable Lighting Control

    E-Print Network [OSTI]

    Agogino, Alice M.

    Energy Conservation Utilizing Wireless Dimmable Lighting Control in a Shared-Space Office Yao Lighting accounts for 25-30% of energy usage in building electrical systems Energy savings can be generated from various lighting management strategies · Daylight harvesting (35-40% in daylit area, 12

  6. Light duty utility arm startup plan

    SciTech Connect (OSTI)

    Barnes, G.A.

    1998-09-01

    This plan details the methods and procedures necessary to ensure a safe transition in the operation of the Light Duty Utility Arm (LDUA) System. The steps identified here outline the work scope and identify responsibilities to complete startup, and turnover of the LDUA to Characterization Project Operations (CPO).

  7. Extending Quality Management to Utility Costs 

    E-Print Network [OSTI]

    Holmes, W. A.

    1994-01-01

    By installing permanent instrumentation and linking it to the appropriate software, a Utility Cost Management Information System, can be created which will identify where, when and how energy is used in a facility on a dynamic and real-time basis...

  8. Utility Incentive Programs Energy Efficiency Opportunities

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    . · Building energy efficiency measures that have higher B/C ratios should be implemented first or at the sameUtility Incentive Programs Energy Efficiency Opportunities June 19th, 2013 CHP/MAEEP Boston, MA #12 building performance good for employees, shoppers, students o Fewer Emissions · Benefits to the Energy

  9. Risk Management Strategies for Electric Utilities 

    E-Print Network [OSTI]

    Sheets, E.

    1986-01-01

    , utility forecasters were predicting brownouts or worse in the mid 1980s in the Pacific Northwest. Today, the Pacific Northwest has a surplus of electricity that could last five to twenty years. Two of the nuclear plants have been completed, two are on hold...

  10. MFR PAPER 1100 Increased utilization of

    E-Print Network [OSTI]

    MFR PAPER 1100 Increased utilization of latent and underutilized fish stocks the existing resource crises and aid industry in reversi ng th e decline evidenced in most New England fisheri input of industry in concert with the resources of NOAA' National Marine Fisheries Service (NMFS

  11. IGSHPA 2013 The Orca Geothermal Utility Model

    E-Print Network [OSTI]

    for 30+ years ­ Started designing and installing geothermal in early 90's ­ IGSHPA member since 1990'sIGSHPA 2013 The Orca Geothermal Utility Model Removing the Initial Cost Barrier October 10th, 2013 #12;The Orca Team · Stuart Yanow, P.Eng. CGD ­ Vice President ­ Mechanical engineer with 13+ years

  12. Utility Roles in Preserving the Industrial Base 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1985-01-01

    While the price of energy may have stabilized for the moment, the impact of several years of rate increases in the cost of energy, materials, and labor has made American industry re-evaluate its operations. Utilities serving clusters of industrial...

  13. Benchmarking mean-field approximations to level densities

    E-Print Network [OSTI]

    Y. Alhassid; G. F. Bertsch; C. N. Gilbreth; H. Nakada

    2015-12-11

    We assess the accuracy of finite-temperature mean-field theory using as a standard the Hamiltonian and model space of the shell model Monte Carlo calculations. Two examples are considered: the nucleus $^{162}$Dy, representing a heavy deformed nucleus, and $^{148}$Sm, representing a nearby heavy spherical nucleus with strong pairing correlations. The errors inherent in the finite-temperature Hartree-Fock and Hartree-Fock-Bogoliubov approximations are analyzed by comparing the entropies of the grand canonical and canonical ensembles, as well as the level density at the neutron resonance threshold, with shell model Monte Carlo (SMMC) calculations, which are accurate up to well-controlled statistical errors. The main weak points in the mean-field treatments are seen to be: (i) the extraction of number-projected densities from the grand canonical ensembles, and (ii) the symmetry breaking by deformation or by the pairing condensate. In the absence of a pairing condensate, we confirm that the usual saddle-point approximation to extract the number-projected densities is not a significant source of error compared to other errors inherent to the mean-field theory. We also present an alternative formulation of the saddle-point approximation that makes direct use of an approximate particle-number projection and avoids computing the usual three-dimensional Jacobian of the saddle-point integration. We find that the pairing condensate is less amenable to approximate particle-number projection methods due to the explicit violation of particle-number conservation in the pairing condensate. Nevertheless, the Hartree-Fock-Bogoliubov theory is accurate to less than one unit of entropy for $^{148}$Sm at the neutron threshold energy, which is above the pairing phase transition.

  14. Balancing Cost and Risk: The Treatment of Renewable Energy inWestern Utility Resource Plans

    SciTech Connect (OSTI)

    Wiser, Ryan; Bolinger, Mark

    2005-09-01

    Markets for renewable electricity have grown significantly in recent years, motivated in part by federal tax incentives and in part by state renewables portfolio standards and renewable energy funds. State renewables portfolio standards, for example, motivated approximately 45% of the 4,300 MW of wind power installed in the U.S. from 2001 through 2004, while renewable energy funds supported an additional 15% of these installations. Despite the importance of these state policies, a less widely recognized driver for renewable energy market growth is poised to also play an important role in the coming years: utility integrated resource planning (IRP). Formal resource planning processes have re-emerged in recent years as an important tool for utilities and regulators, particularly in regions where retail competition has failed to take root. In the western United States, recent resource plans contemplate a significant amount of renewable energy additions. These planned additions - primarily coming from wind power - are motivated by the improved economics of wind power, a growing acceptance of wind by electric utilities, and an increasing recognition of the inherent risks (e.g., natural gas price risk, environmental compliance risk) in fossil-based generation portfolios. The treatment of renewable energy in utility resource plans is not uniform, however. Assumptions about the direct and indirect costs of renewable resources, as well as resource availability, differ, as do approaches to incorporating such resources into the candidate portfolios that are analyzed in utility IRPs. The treatment of natural gas price risk, as well as the risk of future environmental regulations, also varies substantially. How utilities balance expected portfolio cost versus risk in selecting a preferred portfolio also differs. Each of these variables may have a substantial effect on the degree to which renewable energy contributes to the preferred portfolio of each utility IRP. This article, which is based on a longer report from Berkeley Lab, examines how twelve western utilities - Avista, Idaho Power, NorthWestern Energy (NorthWestern or NWE), Portland General Electric (PGE), Puget Sound Energy (PSE), PacifiCorp, Public Service Company of Colorado (PSCo), Nevada Power, Sierra Pacific, Pacific Gas & Electric (PG&E), Southern California Edison (SCE), and San Diego Gas & Electric (SDG&E) - treat renewable energy in their recent resource plans. In aggregate, these utilities supply approximately half of all electricity demand in the western United States. In reviewing these plans, our purpose is twofold: (1) to highlight the growing importance of utility IRP as a current and future driver of renewable energy, and (2) to suggest possible improvements to methods used to evaluate renewable energy as a resource option. This article begins with a discussion of the planned renewable energy additions called for by the twelve utilities in our sample, followed by an overview of how these plans incorporated renewables into candidate portfolios, and a review of the specific technology cost and performance assumptions they made, primarily for wind power. We then turn to the utilities analysis of natural gas price and environmental compliance risks, and examine how the utilities traded off portfolio cost and risk in selecting a preferred portfolio.

  15. Fact #836: September 1, Non-OPEC Countries Supply Nearly Two-thirds of U.S. Petroleum Imports

    Broader source: Energy.gov [DOE]

    The figure below shows the volume and source of imported petroleum to the United States from 1960 to 2013. The countries which are members of OPEC (Organization of the Petroleum Exporting Countries...

  16. Fact #834: August 18, 2014 About Two-Thirds of Transportation Energy Use is Gasoline for Light Vehicles

    Broader source: Energy.gov [DOE]

    Highway vehicles are responsible for the majority of the energy consumed by the transportation sector. Most of the fuel used in light vehicles is gasoline, while most of the fuel used in medium and...

  17. Quick Guide: Utility Energy Services Contracting (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-07-01

    Summarized guide to conducting Federal energy management projects through utility energy services contracts.

  18. Federal Utility Partnership Working Group Seminar: Washington Update

    Broader source: Energy.gov [DOE]

    Presentation covers the Federal Utility Partnership Working Group Seminar: Washington Update on May 22, 2013.

  19. Patient Utility of Diagnostic Information Jeshika Singh, HERG, Brunel University

    E-Print Network [OSTI]

    Oakley, Jeremy

    Patient Utility of Diagnostic Information Jeshika Singh, HERG, Brunel University Background of the utility of the informational aspects of diagnostic tests, where the utility or value has been measured that reported utility estimates of diagnostic informational using methods compatible with NICE ­ such as EQ5D

  20. CONVENIENCE YIELD MODEL WITH PARTIAL OBSERVATIONS AND EXPONENTIAL UTILITY

    E-Print Network [OSTI]

    Carmona, Rene

    CONVENIENCE YIELD MODEL WITH PARTIAL OBSERVATIONS AND EXPONENTIAL UTILITY REN´E CARMONA AND MICHAEL. We study the value function corresponding to utility pric- ing with exponential utility. Assuming of the full information case. convenience yield, filtering, partial observations, stochastic control, utility

  1. A Utility Maximization Approach to Hedging in Incomplete Markets

    E-Print Network [OSTI]

    Kallsen, Jan

    A Utility Maximization Approach to Hedging in Incomplete Markets Jan Kallsen Universität Freiburg i local utility. This concept is related to maximization of expected utility of con- sumption but markets, local utility 1 Introduction Suppose you have sold contingent claims and you want to hedge

  2. Commissioner Catherine J.K. Sandoval California Public Utilities Commission

    E-Print Network [OSTI]

    Stoltz, Brian M.

    Commissioner Catherine J.K. Sandoval California Public Utilities Commission Caltech April 2, 2014 by Constitutional Amendment as the Railroad Commission. · In 1912, the Legislature passed the Public Utilities Act Utilities Commission. · CPUC regulates Investor-Owned Utilities that provide: ­ Electricity ­ Gas

  3. A Utility Maximization Approach to Hedging in Incomplete Markets

    E-Print Network [OSTI]

    Kallsen, Jan

    A Utility Maximization Approach to Hedging in Incomplete Markets Jan Kallsen Universität Freiburg i­ pected local utility. This concept is related to maximization of expected utility of con­ sumption but markets, local utility 1 Introduction Suppose you have sold contingent claims and you want to hedge

  4. Energy Conservation Through Utility Systems Transient Response Analysis 

    E-Print Network [OSTI]

    Sorotzkin, J.

    1981-01-01

    of operating strategies. The relationship between utility systems stability and the Complex energy efficiency is examined....

  5. Investigation of a family of power conditioners integrated into the utility grid: Category 1. Residential power conditioner. Final report

    SciTech Connect (OSTI)

    Steigerwald, R.L.; Ferraro, A.; Tompkins, R.E.

    1981-07-01

    The development of power conditioners for residential photovoltaic applications of approximately 5 to 30 kW is reported. The interface of the inverter and the solar array, as well as the ac utility is investigated including the effects of array input current, utility impedance, and injected harmonic currents. The trade-off study of alternate power conversion schemes are covered which results in a recommended approach. A conceptual design of the recommended approach, including performance results obtained from an inverter simulated is presented. (LEW)

  6. On the Peterlin approximation for turbulent flows of polymer solutions

    E-Print Network [OSTI]

    Vincenzi, Dario; Biferale, Luca; Toschi, Federico

    2015-01-01

    We study the impact of the Peterlin approximation on the statistics of the end-to-end separation of poly- mers in a turbulent flow. The FENE and FENE-P models are numerically integrated along a large number of Lagrangian trajectories resulting from a direct numerical simulation of three-dimensional homogeneous isotropic turbulence. Although the FENE-P model yields results in qualitative agreement with those of the FENE model, quantitative differences emerge. The steady-state probability of large extensions is overesti- mated by the FENE-P model. The alignment of polymers with the eigenvectors of the rate-of-strain tensor and with the direction of vorticity is weaker when the Peterlin approximation is used. At large Weissenberg numbers, both the correlation times of the extension and of the orientation of polymers are underestimated by the FENE-P model.

  7. Axially symmetric dissipative fluids in the quasi--static approximation

    E-Print Network [OSTI]

    Herrera, L; Ospino, J; Carot, J

    2015-01-01

    Using a framework based on the $1+3$ formalism we carry out a study on axially and reflection symmetric dissipative fluids, in the quasi--static regime. We first derive a set of invariantly defined "velocities", which allow for an inambiguous definition of the quasi--static approximation. Next we rewrite all the relevant equations in this aproximation and extract all the possible, physically relevant, consequences ensuing the adoption of such an approximation. In particular we show how the vorticity, the shear and the dissipative flux, may lead to situations where different kind of "velocities" change of sign within the fluid distribution with respect to theirs sign on the boundary surface. It is shown that states of gravitational radiation are not {\\it a priori} incompatible with the quasistatic--regime. However, any such state must last for an infinite period of time, thereby diminishing its physical relevance.

  8. Quasielastic electron-deuteron scattering in the weak binding approximation

    SciTech Connect (OSTI)

    Ethier, Jacob J. [William and Mary College, JLAB; Doshi, Nidhi P. [Carnegie Mellon University; Malace, Simona P. [JLAB; Melnitchouk, Wally [JLAB

    2014-06-01

    We perform a global analysis of all available electron-deuteron quasielastic scattering data using Q^2-dependent smearing functions that describe inclusive inelastic e-d scattering within the weak binding approximation. We study the dependence of the cross sections on the deuteron wave function and the off-shell extrapolation of the elastic electron-nucleon cross section, which show particular sensitivity at x >> 1. The excellent overall agreement with data over a large range of Q^2 and x suggest a limited need for effects beyond the impulse approximation, with the exception of the very high-x or very low-Q^2 regions, where short-distance effects in the deuteron become more relevant.

  9. Feedback stabilisation of switched systems via iterative approximate eigenvector assignment

    E-Print Network [OSTI]

    Haimovich, Hernan

    2010-01-01

    This paper presents and implements an iterative feedback design algorithm for stabilisation of discrete-time switched systems under arbitrary switching regimes. The algorithm seeks state feedback gains so that the closed-loop switching system admits a common quadratic Lyapunov function (CQLF) and hence is uniformly globally exponentially stable. Although the feedback design problem considered can be solved directly via linear matrix inequalities (LMIs), direct application of LMIs for feedback design does not provide information on closed-loop system structure. In contrast, the feedback matrices computed by the proposed algorithm assign closed-loop structure approximating that required to satisfy Lie-algebraic conditions that guarantee existence of a CQLF. The main contribution of the paper is to provide, for single-input systems, a numerical implementation of the algorithm based on iterative approximate common eigenvector assignment, and to establish cases where such algorithm is guaranteed to succeed. We inc...

  10. On the Peterlin approximation for turbulent flows of polymer solutions

    E-Print Network [OSTI]

    Dario Vincenzi; Prasad Perlekar; Luca Biferale; Federico Toschi

    2015-05-26

    We study the impact of the Peterlin approximation on the statistics of the end-to-end separation of poly- mers in a turbulent flow. The FENE and FENE-P models are numerically integrated along a large number of Lagrangian trajectories resulting from a direct numerical simulation of three-dimensional homogeneous isotropic turbulence. Although the FENE-P model yields results in qualitative agreement with those of the FENE model, quantitative differences emerge. The steady-state probability of large extensions is overesti- mated by the FENE-P model. The alignment of polymers with the eigenvectors of the rate-of-strain tensor and with the direction of vorticity is weaker when the Peterlin approximation is used. At large Weissenberg numbers, both the correlation times of the extension and of the orientation of polymers are underestimated by the FENE-P model.

  11. Crystallization of polyethylene by modified weighted density approximation(MWDA)

    E-Print Network [OSTI]

    Razeghizadeh, Alireza; Lavafpour, Farhad

    2015-01-01

    In this article, we use the modified weighted density approximation to study the crystallization of polyethylene. We also use a direct correlation function of polyethylene based on RISM theory. The free energy of a polyethylene is calculated using density functional theory. The crystallization and solid and liquid density are calculated and finally compared with the prism simulation and experimental results. That shown the result obtained by MWDA is in better agreement, compared with the experimental result than the prism.

  12. Crystallization of polyethylene by modified weighted density approximation(MWDA)

    E-Print Network [OSTI]

    Alireza Razeghizadeh; Vahdat Rafee; Farhad Lavafpour

    2015-02-07

    In this article, we use the modified weighted density approximation to study the crystallization of polyethylene. We also use a direct correlation function of polyethylene based on RISM theory. The free energy of a polyethylene is calculated using density functional theory. The crystallization and solid and liquid density are calculated and finally compared with the prism simulation and experimental results. That shown the result obtained by MWDA is in better agreement, compared with the experimental result than the prism.

  13. Product-state Approximations to Quantum Ground States

    E-Print Network [OSTI]

    Fernando G. S. L. Brandão; Aram W. Harrow

    2014-12-15

    The local Hamiltonian problem consists of estimating the ground-state energy (given by the minimum eigenvalue) of a local quantum Hamiltonian. First, we show the existence of a good product-state approximation for the ground-state energy of 2-local Hamiltonians with one or more of the following properties: (1) high degree, (2) small expansion, or (3) a ground state with sublinear entanglement with respect to some partition into small pieces. The approximation based on degree is a surprising difference between quantum Hamiltonians and classical CSPs (constraint satisfaction problems), since in the classical setting, higher degree is usually associated with harder CSPs. The approximation based on low entanglement, in turn, was previously known only in the regime where the entanglement was close to zero. Since the existence of a low-energy product state can be checked in NP, the result implies that any Hamiltonian used for a quantum PCP theorem should have: (1) constant degree, (2) constant expansion, (3) a "volume law" for entanglement with respect to any partition into small parts. Second, we show that in several cases, good product-state approximations not only exist, but can be found in polynomial time: (1) 2-local Hamiltonians on any planar graph, solving an open problem of Bansal, Bravyi, and Terhal, (2) dense k-local Hamiltonians for any constant k, solving an open problem of Gharibian and Kempe, and (3) 2-local Hamiltonians on graphs with low threshold rank, via a quantum generalization of a recent result of Barak, Raghavendra and Steurer. Our work introduces two new tools which may be of independent interest. First, we prove a new quantum version of the de Finetti theorem which does not require the usual assumption of symmetry. Second, we describe a way to analyze the application of the Lasserre/Parrilo SDP hierarchy to local quantum Hamiltonians.

  14. Denoising MR Spectroscopic Imaging Data with Low-Rank Approximations

    E-Print Network [OSTI]

    Do, Minh N.

    1 Denoising MR Spectroscopic Imaging Data with Low-Rank Approximations Hien M. Nguyen, Member, IEEE- temporal imaging data as well. Index Terms--MR spectroscopy, MR spectroscopic imaging, denoising, low spectroscopic (MRS) signal in (k, t)-space can be expressed as s(k, t) = (r, f)e-i2k·r e-i2ft drdf + (k, t), (1

  15. COMPLEXITY & APPROXIMABILITY OF QUANTIFIED & STOCHASTIC CONSTRAINT SATISFACTION PROBLEMS

    SciTech Connect (OSTI)

    H. B. HUNT; M. V. MARATHE; R. E. STEARNS

    2001-06-01

    Let D be an arbitrary (not necessarily finite) nonempty set, let C be a finite set of constant symbols denoting arbitrary elements of D, and let S and T be an arbitrary finite set of finite-arity relations on D. We denote the problem of determining the satisfiability of finite conjunctions of relations in S applied to variables (to variables and symbols in C) by SAT(S) (by SATc(S).) Here, we study simultaneously the complexity of decision, counting, maximization and approximate maximization problems, for unquantified, quantified and stochastically quantified formulas. We present simple yet general techniques to characterize simultaneously, the complexity or efficient approximability of a number of versions/variants of the problems SAT(S), Q-SAT(S), S-SAT(S),MAX-Q-SAT(S) etc., for many different such D,C,S,T. These versions/variants include decision, counting, maximization and approximate maximization problems, for unquantified, quantified and stochastically quantified formulas. Our unified approach is based on the following two basic concepts: (i) strongly-local replacements/reductions and (ii) relational/algebraic representability. Some of the results extend the earlier results in [Pa85,LMP99,CF+93,CF+94] Our techniques and results reported here also provide significant steps towards obtaining dichotomy theorems, for a number of the problems above, including the problems MAX-Q-SAT(S), and MAX-S-SAT(S). The discovery of such dichotomy theorems, for unquantified formulas, has received significant recent attention in the literature [CF+93, CF+94, Cr95, KSW97]. Keywords: NP-hardness; Approximation Algorithms; PSPACE-hardness; Quantified and Stochastic Constraint Satisfaction Problems.

  16. Slag monitoring for utility boilers: Final report

    SciTech Connect (OSTI)

    Anson, D.; Barrett, R.E.; Litt, R.D.; Paisley, M.A.

    1988-04-01

    This report provides a detailed description of commercially available slag monitoring techniques and some developing concepts for slag monitoring. Slag monitoring is currently being evaluated by several organizations as a means of controlling and optimizing sootblowers. The potential benefits from slag monitoring can represent significant savings in utility operating costs. Six types of heat flux meters are described as they are presently being used in utility boilers. These direct monitoring techniques determine local conditions within the furnace. Each application is described with current results and future plans. Boiler heat balance models provide an indirect technique for monitoring the general cleanliness/fouling of major boiler sections. Each model is described with current results at a representative installation. Several developing concepts of slag monitoring are described and evaluated. Four promising concepts, acoustic attenuation, a simplified heat balance model, sonic pyrometry, and ultrasonic pulse reflection, are recommended for further development and evaluation. 16 refs., 34 figs., 4 tabs.

  17. City growth as a resource utilization problem

    E-Print Network [OSTI]

    Ghosh, Asim; Chakrabarti, Anindya S; Chakrabarti, Bikas K

    2014-01-01

    We study a resource utilization scenario characterized by intrinsic attractiveness, in a system of many restaurants where customers compete to get the best services out of many choices. Results for the case with uniform attractiveness are reported. When attractiveness is uniformly distributed, it gives rise to a Zipf-Pareto law for the number of customers. We perform an exact calculation for the utilization fraction for the case when choices are made independent of attractiveness. A variant of the model is also introduced where the attractiveness can be treated as a fitness to stay in the business. When a restaurant loses customers, its fitness is replaced by a random fitness. The fitness distribution is characterized by a power law, but the power law distribution in number of customers still holds, implying the robustness of the model. Our model serves as a paradigm for city size distribution and the emergence of Zipf law.

  18. The Vainshtein mechanism beyond the quasi-static approximation

    E-Print Network [OSTI]

    Hans A. Winther; Pedro G. Ferreira

    2015-05-13

    Theories of modified gravity, in both the linear and fully non-linear regime, are often studied under the assumption that the evolution of the new (often scalar) degree of freedom present in the theory is quasi-static. This approximation significantly simplifies the study of the theory, and one often has good reason to believe that it should hold. Nevertheless it is a crucial assumption that should be explicitly checked whenever possible. In this paper we do so for the Vainshtein mechanism. By solving for the full spatial and time evolution of the Dvali-Gabadadze-Porrati and the Cubic Galileon model, in a spherical symmetric spacetime, we are able to demonstrate that the Vainshtein solution is a stable attractor and forms no matter what initial conditions we take for the scalar field. Furthermore,the quasi-static approximation is also found to be a very good approximation whenever it exists. For the best-fit Cubic Galileon model, however, we find that for deep voids at late times, the numerical solution blows up at the same time as the quasi-static solution ceases to exist. We argue that this phenomenon is a true instability of the model.

  19. Generalized random phase approximation of soft-matter systems

    E-Print Network [OSTI]

    Derek Frydel

    2015-07-30

    A general RPA approximation is developed within the liquid-state formalism as a systematic first step beyond the mean-field and toward a more realistic description of the weak-coupling regime. The resulting RPA is self-consistent and, in principle, valid for arbitrary particle interactions. RPA is introduced into the liquid-state framework via adiabatic connection -- by adiabatically switching on the particle interactions while keeping the particle density fixed at its physical value by means of an auxiliary external potential. Correlational free energy Fc involves a coupling-strength integral $\\int_0^1d{\\lambda}\\,h_{\\lambda}({\\bf r},{\\bf r}')$, where a correlation function of a fictitious system, $h_{\\lambda}({\\bf r},{\\bf r}')$, is obtained from the Ornstein-Zernike equation and an appropriate closure relation. The closure $c_{\\lambda}({\\bf r},{\\bf r}')=-\\beta\\lambda u({\\bf r},{\\bf r}')$ yields the RPA approximation. The coupling constant integral within Fc can alternatively be expressed as a summation of ring diagrams to infinite order, a known feature of RPA. The ring series can, in turn, be linked to a functional determinant known to be a solution of a Gaussian integral, therefore, connecting the RPA to the Gaussian type of an approximation.

  20. The periodic standing-wave approximation: post-Minkowski computation

    E-Print Network [OSTI]

    Christopher Beetle; Benjamin Bromley; Napoleón Hernández; Richard H. Price

    2007-08-08

    The periodic standing wave method studies circular orbits of compact objects coupled to helically symmetric standing wave gravitational fields. From this solution an approximation is extracted for the strong field, slowly inspiralling motion of black holes and binary stars. Previous work on this model has dealt with nonlinear scalar models, and with linearized general relativity. Here we present the results of the method for the post-Minkowski (PM) approximation to general relativity, the first step beyond linearized gravity. We compute the PM approximation in two ways: first, via the standard approach of computing linearized gravitational fields and constructing from them quadratic driving sources for second-order fields, and second, by solving the second-order equations as an ``exact'' nonlinear system. The results of these computations have two distinct applications: (i) The computational infrastructure for the ``exact'' PM solution will be directly applicable to full general relativity. (ii) The results will allow us to begin supplying initial data to collaborators running general relativistic evolution codes.