Sample records for addthis problem multiple

  1. V-090: Adobe Flash Player / AIR Multiple Vulnerabilities | Department...

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

    0: Adobe Flash Player AIR Multiple Vulnerabilities V-090: Adobe Flash Player AIR Multiple Vulnerabilities February 13, 2013 - 12:14am Addthis PROBLEM: Adobe Flash Player AIR...

  2. Multiple Vehicle Routing Problem with Fuel Constraints

    E-Print Network [OSTI]

    Levy, David

    2013-06-26T23:59:59.000Z

    In this paper, a Multiple Vehicle Routing Problem with Fuel Constraints (MVRPFC) is considered. This problem consists of a field of targets to be visited, and a collection of vehicles with fuel tanks that may visit the targets. Consideration...

  3. Multiple Vehicle Routing Problem with Fuel Constraints 

    E-Print Network [OSTI]

    Levy, David

    2013-06-26T23:59:59.000Z

    In this paper, a Multiple Vehicle Routing Problem with Fuel Constraints (MVRPFC) is considered. This problem consists of a field of targets to be visited, and a collection of vehicles with fuel tanks that may visit the targets. Consideration...

  4. Algorithms for Multiple Vehicle Routing Problems 

    E-Print Network [OSTI]

    Bae, Jung Yun

    2014-06-02T23:59:59.000Z

    Surveillance and monitoring applications require a collection of heterogeneous vehicles to visit a set of targets. This dissertation considers three fundamental routing problems involving multiple vehicles that arise in these applications. The main...

  5. Algorithms for Multiple Vehicle Routing Problems

    E-Print Network [OSTI]

    Bae, Jung Yun

    2014-06-02T23:59:59.000Z

    Surveillance and monitoring applications require a collection of heterogeneous vehicles to visit a set of targets. This dissertation considers three fundamental routing problems involving multiple vehicles that arise in these applications. The main...

  6. Diagnostics for multiple regression problems

    SciTech Connect (OSTI)

    Daly, J.C.

    1982-03-01T23:59:59.000Z

    In the last 10 to 15 years there has been much work done in trying to improve linear regression results. Individuals have analyzed the susceptibility of least-squares results to values far removed from the center of the independent variable observations. They have studied the problem of heavy-tailed residuals, and they have studied the problem of collinearity. From these studies have come ridge regression techniques, robust regression techniques, regression on principal components, etc. However, many practitioners view these methods with suspicion (and ignorance), and prefer to continue using the usual least-squares procedures to fit their models, even though their results might not be answering the question they think. In reaction to this, statisticians are spending more time analyzing how the individual observations affect the least squares results. In the last few years approximately 10 papers and one text have appeared that address the problem of how to study the influence of the individual observations. This report is a study of the recent work done in linear regression diagnostics. It is concerned with analyzing the effect of one case at a time, since the methods to analyze this situation are relatively straight-forward and are not prohibitive computationally.

  7. ON THE STATE AGREEMENT PROBLEM FOR MULTIPLE NONLINEAR DYNAMICAL

    E-Print Network [OSTI]

    Maggiore, Manfredi

    agreement problem of continuous time nonlinear interconnected systems, which can de- scribe a numberON THE STATE AGREEMENT PROBLEM FOR MULTIPLE NONLINEAR DYNAMICAL SYSTEMS Zhiyun Lin, Bruce Francis, ON Canada M5S 3G4 Abstract: This paper studies the state agreement problem with the objective to ensure

  8. U-277: Google Chrome Multiple Flaws Let Remote Users Execute...

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

    7: Google Chrome Multiple Flaws Let Remote Users Execute Arbitrary Code U-277: Google Chrome Multiple Flaws Let Remote Users Execute Arbitrary Code October 9, 2012 - 6:00am Addthis...

  9. Simultaneous Operation of Multiple Collocated Radios and the Scanning Problem

    E-Print Network [OSTI]

    Barbeau, Michel

    Simultaneous Operation of Multiple Collocated Radios and the Scanning Problem Michel Barbeau. The radio interface scans channels to uncover beacons periodically sent by transmitters. The goal of the scanning activity is to uncover the beacons within the shortest possible time. We call this the scanning

  10. Solution of the multiple traveling salesman problem with a circulation network model

    E-Print Network [OSTI]

    Forester, Ronald Ray

    1983-01-01T23:59:59.000Z

    SOLUTION OF THE MULTIPLE TRAVELING SALESMAN PROBLEM WITH A CIRCULATION NETWORK MODEL A Thesis by RONALD RAY FORESTER Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE August 1983 Major Subject: Industrial Engineering SOLUTION OF THE MULTIPLE TRAVELING SALESMAN PROBLEM WITH A CIRCULATION NETWORK MODEL A Thesis by RONALD RAY FORESTER Approved as to style and content by: erto are&a- saz...

  11. A fast multipole boundary element method for modeling 2-D multiple crack problems with constant elements

    E-Print Network [OSTI]

    Liu, Yijun

    A fast multipole boundary element method for modeling 2-D multiple crack problems with constant 3 April 2014 Accepted 20 May 2014 Keywords: Fast multipole BEM 2-D multi-crack problems Constant elements Crack opening displacements Stress intensity factors a b s t r a c t A fast multipole boundary

  12. A study of problems in survey technique encountered when using a multiple frame survey

    E-Print Network [OSTI]

    Conner, James Richard

    1967-01-01T23:59:59.000Z

    of the multiple trame sampling technique, one is faced with the problem of finding suitable frames to combine with it. Sin~e many incomplete iist frame: are readily a. . eilable, and mail sampling of lists s usually less expensive than dire t interviews.... Identification of units sampled in both frames. 5. Response rates, i, e. , effects of low response to the mail survey if applicable. 6. Estimates of farm characteristics from the joint use of two frames and comparison with area frame estimates. Description...

  13. BIOAUTOMATION, 2009, 13 (4), 271-280 Ant Colony Optimization for Multiple Knapsack Problems

    E-Print Network [OSTI]

    Fidanova, Stefka

    Salesman Problem [3, 11], Vehicle Routing [12], Minimum Spanning Tree [9], Constrain Satisfaction [7, 11, India Summary: Ant Colony Optimization is a stochastic search method that mimics the social behaviour

  14. Solving the MultipleInstance Problem with AxisParallel Rectangles

    E-Print Network [OSTI]

    the following learning problem. Suppose there is a keyed lock on the door to the supply room in an office. Each staff members, their supply room key may open one or more other doors (e.g., their office door, the mail i ; result i ig. This situation is depicted in Figure 1(a). Each object is typically represented

  15. PROBLEMS

    E-Print Network [OSTI]

    In each of Problems 1 through 8, ?nd the general solution of the given differentiaI ..... (b) Let yatr) = —282'. yttr) = Mr) '+ 21/20). and no) = 2n (I) * Zyrtf) Are ysU).

  16. Problem

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70 Hg Mercury 35 Br BromineProbing the Proton's Weak2 Problem

  17. Verification test problems for the calculation of probability of loss of assured safety in temperature-dependent systems with multiple weak and strong links.

    SciTech Connect (OSTI)

    Johnson, Jay Dean (ProStat, Mesa, AZ); Oberkampf, William Louis; Helton, Jon Craig (Arizona State University, Tempe, AZ)

    2006-06-01T23:59:59.000Z

    Four verification test problems are presented for checking the conceptual development and computational implementation of calculations to determine the probability of loss of assured safety (PLOAS) in temperature-dependent systems with multiple weak links (WLs) and strong links (SLs). The problems are designed to test results obtained with the following definitions of loss of assured safety: (1) Failure of all SLs before failure of any WL, (2) Failure of any SL before failure of any WL, (3) Failure of all SLs before failure of all WLs, and (4) Failure of any SL before failure of all WLs. The test problems are based on assuming the same failure properties for all links, which results in problems that have the desirable properties of fully exercising the numerical integration procedures required in the evaluation of PLOAS and also possessing simple algebraic representations for PLOAS that can be used for verification of the analysis.

  18. roadly, distributed problem solving is a subfield within multiagent systems, where the focus is to enable multiple

    E-Print Network [OSTI]

    Yeoh, William

    B roadly, distributed problem solving is a subfield within multiagent systems, where the focus the motivations for distributed problem solving with an example. Imagine a decentralized channel rights reserved. ISSN 0738-4602 Distributed Problem Solving William Yeoh, Makoto Yokoo n Distributed

  19. Analysis of the benefits of designing and implementing a virtual didactic model of multiple choice exam and problem-solving heuristic report, for first year engineering students

    E-Print Network [OSTI]

    Bennun, Leonardo

    2015-01-01T23:59:59.000Z

    Improvements in performance and approval obtained by first year engineering students from University of Concepcion, Chile, were studied, once a virtual didactic model of multiple-choice exam, was implemented. This virtual learning resource was implemented in the Web ARCO platform and allows training, by facing test models comparable in both time and difficulty to those that they will have to solve during the course. It also provides a feedback mechanism for both: 1) The students, since they can verify the level of their knowledge. Once they have finished the simulations, they can access a complete problem-solving heuristic report of each problem; 2) The teachers, since they can obtain information about the habits of the students in their strategies of preparation; and they also can diagnose the weaknesses of the students prior to the exam. This study indicates how this kind of preparation generates substantial improvements on the approval rates by allowing the students: 1) A more structured and oriented syste...

  20. The garden of forking paths: Why multiple comparisons can be a problem, even when there is no "fishing expedition" or "p-hacking" and the research

    E-Print Network [OSTI]

    Gelman, Andrew

    there is no "fishing expedition" or "p-hacking" and the research hypothesis was posited ahead of time Andrew Gelman of fishing or examining multiple p-values. We discuss in the context of several examples of published papers. Multiple comparisons doesn't have to feel like fishing 1.1. Background There is a growing realization

  1. Moment problems and boundaries of number triangles

    E-Print Network [OSTI]

    Gnedin, Alexander

    2008-01-01T23:59:59.000Z

    The boundary problem for graphs like Pascal's but with general multiplicities of edges is related to a `backward' problem of moments of the Hausdorff type.

  2. Sequence labeling with multiple annotators

    E-Print Network [OSTI]

    Rodrigues, Filipe

    The increasingly popular use of Crowdsourcing as a resource to obtain labeled data has been contributing to the wide awareness of the machine learning community to the problem of supervised learning from multiple annotators. ...

  3. Multiple criteria minimum spanning trees Pedro Cardoso

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    Multiple criteria minimum spanning trees Pedro Cardoso M´ario Jesus ´Alberto M´arquez Abstract The NP multiple criteria minimum spanning tree as several applications into the network design problems criteria minimum spanning trees. There are several geometric network design and application problems

  4. [3] E. Harabetian and S. Osher, Stabilizing illposed problems vis the level set approach, preprint. [4] B. Merriman, J. Bence, and S. Osher, Motion of multiple junctions : A level set approach,

    E-Print Network [OSTI]

    Chan, Tony F.

    . [4] B. Merriman, J. Bence, and S. Osher, Motion of multiple junctions : A level set approach, J. Comp of essentially nonoscillatory schemes i, J. Comp.Phys., 83 (1989), pp. 32--78. [10] M. Sussman, Ph.d thesis, UCLA of multiple junc­ tions and interfaces in 3­d and application to domain decomposition, Preprint. 32 #12; Let F

  5. Tracking Multiple Targets Using Binary Decisions from Wireless Sensor Networks

    E-Print Network [OSTI]

    Michailidis, George

    Tracking Multiple Targets Using Binary Decisions from Wireless Sensor Networks Natallia Katenka- tions. 1 #12;Keywords: wireless sensor networks, binary data, target tracking, multiple targets, penal- ized maximum likelihood 1 Introduction and Problem Motivation Wireless Sensor Networks (WSN) have

  6. V-122: IBM Tivoli Application Dependency Discovery Manager Java...

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

    or update to version 7.2.1.4 Addthis Related Articles V-132: IBM Tivoli System Automation Application Manager Multiple Vulnerabilities V-145: IBM Tivoli Federated Identity...

  7. Enhancements to System for Tracking Radioactive Waste Shipments...

    Energy Savers [EERE]

    Multiple Users January 30, 2013 - 12:00pm Addthis Transportation Tracking and Communication System users can now track shipments of radioactive materials and access...

  8. Renewable Energy Training and Education | Department of Energy

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

    Renewable Energy Training and Education Renewable Energy Training and Education October 16, 2013 - 5:17pm Addthis Multiple resources exist to train Federal agency personnel to...

  9. Generating All Efficient Extreme Points in Multiple Objective Linear ...

    E-Print Network [OSTI]

    2007-06-21T23:59:59.000Z

    for generating all efficient extreme points and all efficient extreme rays of a multiple objective linear programming problem (V P). As an application we solve the ...

  10. EECBG Success Story: Grant Improves Comfort for Nevada City's...

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

    city hall: a historic railroad depot. There was just one problem: it was built before central heating or air-conditioning. Learn more. Addthis Related Articles Metal halide...

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

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

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

  12. Problem 6

    E-Print Network [OSTI]

    2015-01-07T23:59:59.000Z

    Feb 17, 2015 ... Did the ball spend more time during its flight going up or going down? A panel in the Mathematics Department publishes a challenging problem ...

  13. Problem 3

    E-Print Network [OSTI]

    2014-08-18T23:59:59.000Z

    Sep 9, 2014 ... COPIES ARE AVAILABLE IN THE MATH LIBRARY. PROBLEM OF ... 150 North University St., West Lafayette, IN 47907-2067. Please include ...

  14. Problem 7

    E-Print Network [OSTI]

    2014-09-23T23:59:59.000Z

    Oct 7, 2014 ... COPIES ARE AVAILABLE IN THE MATH LIBRARY. PROBLEM OF ... 150 North University St., West Lafayette, IN 47907-2067. Please include ...

  15. Problem 2

    E-Print Network [OSTI]

    2014-08-18T23:59:59.000Z

    Sep 2, 2014 ... COPIES ARE AVAILABLE IN THE MATH LIBRARY. PROBLEM OF ... 150 North University St., West Lafayette, IN 47907-2067. Please include ...

  16. The Value of Flexibility in Robust Location-Transportation Problem

    E-Print Network [OSTI]

    2014-11-24T23:59:59.000Z

    Christensen, Tue R. L., Kim Allan Andersen, Andreas Klose. 2013. Solving the single-sink, fixed-charge, multiple-choice transportation problem by dynamic ...

  17. Analysis of oil-pipeline distribution of multiple products subject to delivery time-windows 

    E-Print Network [OSTI]

    Jittamai, Phongchai

    2006-04-12T23:59:59.000Z

    This dissertation defines the operational problems of, and develops solution methodologies for, a distribution of multiple products into oil pipeline subject to delivery time-windows constraints. A multiple-product oil pipeline is a pipeline system...

  18. Analysis of oil-pipeline distribution of multiple products subject to delivery time-windows

    E-Print Network [OSTI]

    Jittamai, Phongchai

    2006-04-12T23:59:59.000Z

    This dissertation defines the operational problems of, and develops solution methodologies for, a distribution of multiple products into oil pipeline subject to delivery time-windows constraints. A multiple-product oil pipeline is a pipeline system...

  19. Multiple mass solvers

    E-Print Network [OSTI]

    B. Jegerlehner

    1997-08-29T23:59:59.000Z

    We present a general method to construct multiple mass solvers from standard algorithms. As an example, the BiCGstab-M algorithm is derived.

  20. Multiple System Rate Process

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

    DSW Multiple System Transmission Rate Process Federal Register Notice Withdrawing Rate Proposal (PDF) Formal Process Extension Federal Register Notice (PDF) Customer Savisngs Under...

  1. A probabilistic numerical method for optimal multiple switching problem

    E-Print Network [OSTI]

    performing the numerical resolution, the storage of the Monte Carlo simulation paths is not needed. Then, we at the minimum cost under a given constraint on the loss of load probability or on the level of energy non to thank Thomas Vareschi, Xavier Warin and the participants of the FiME seminar and the Energy Finance

  2. Cosmological problems with multiple axion-like fields

    SciTech Connect (OSTI)

    Mack, Katherine J. [Kavli Institute for Cosmology, Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA (United Kingdom); Steinhardt, Paul J., E-mail: mack@ast.cam.ac.uk, E-mail: steinh@princeton.edu [Department of Physics, Princeton University, Jadwin Hall, Princeton, NJ 08544 (United States)

    2011-05-01T23:59:59.000Z

    Incorporating the QCD axion and simultaneously satisfying current constraints on the dark matter density and isocurvature fluctuations requires non-minimal fine-tuning of inflationary parameters or the axion misalignment angle (or both) for Peccei-Quinn symmetry-breaking scales f{sub a} > 10{sup 12} GeV. To gauge the degree of tuning in models with many axion-like fields at similar symmetry-breaking scales and masses, as may occur in string theoretic models that include a QCD axion, we introduce a figure of merit F that measures the fractional volume of allowed parameter space: the product of the slow roll parameter ? and each of the axion misalignment angles, ?{sub 0}. For a single axion, F?<10{sup ?11} is needed to avoid conflict with observations. We show that the fine tuning of F becomes exponentially more extreme in the case of numerous axion-like fields. Anthropic arguments are insufficient to explain the fine tuning because the bulk of the anthropically allowed parameter space is observationally ruled out by limits on the cosmic microwave background isocurvature modes. Therefore, this tuning presents a challenge to the compatibility of string-theoretic models with light axions and inflationary cosmology.

  3. Multiple density layered insulator

    DOE Patents [OSTI]

    Alger, Terry W. (Tracy, CA)

    1994-01-01T23:59:59.000Z

    A multiple density layered insulator for use with a laser is disclosed wh provides at least two different insulation materials for a laser discharge tube, where the two insulation materials have different thermoconductivities. The multiple layer insulation materials provide for improved thermoconductivity capability for improved laser operation.

  4. Multiple density layered insulator

    DOE Patents [OSTI]

    Alger, T.W.

    1994-09-06T23:59:59.000Z

    A multiple density layered insulator for use with a laser is disclosed which provides at least two different insulation materials for a laser discharge tube, where the two insulation materials have different thermoconductivities. The multiple layer insulation materials provide for improved thermoconductivity capability for improved laser operation. 4 figs.

  5. Dynamic dependence analysis : modeling and inference of changing dependence among multiple time-series

    E-Print Network [OSTI]

    Siracusa, Michael Richard, 1980-

    2009-01-01T23:59:59.000Z

    In this dissertation we investigate the problem of reasoning over evolving structures which describe the dependence among multiple, possibly vector-valued, time-series. Such problems arise naturally in variety of settings. ...

  6. A Multiple Procedure DDT

    E-Print Network [OSTI]

    Knight, Thomas

    1968-01-01T23:59:59.000Z

    This Memo. Describes a version of DDT used as the command level of the A.I. Group PDP-6 Time Sharing System (ITS). Special features include capability to handle multiple jobs, ability to stop open read or write references ...

  7. Multiple jet interactions

    E-Print Network [OSTI]

    Hehr, Roger James

    1983-01-01T23:59:59.000Z

    MULTIPLE JET INTERACTIONS A Thesis by ROGER JAMES HEHR Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1983 Major Subject: Aerospace Engineering... MULTIPLE JET INTERACTIONS A Thesis by ROGER JAMES HEHR Approved as to style and content by: David . Norton (Chairman of Committee) raid L. orrison (Mem er) Leland A. Carlson (Member) Er est . Cross, r. (Head of Department) August 1983 ABSTRACT...

  8. FOURIER TRANSFORM MULTIPLE QUANTUM NMR

    E-Print Network [OSTI]

    Drobny, G.

    2011-01-01T23:59:59.000Z

    of transition observed in Fourier transform multiple quantumDecember 18-19, 1979 FOURIER TRANSFORM MULTIPLE QUANTUM NMRof London, December 1978. FOURIER TRANSFO~~ MULTIPLE QUANTUM

  9. Multiple solutions in supersymmetry and the Higgs

    E-Print Network [OSTI]

    Allanach, Ben C.

    2014-11-24T23:59:59.000Z

    Meeting Issue ‘Before, behind and beyond the discovery of the Higgs boson’. Subject Areas: particle physics, high energy physics Keywords: minimal supersymmetric standard model, technical hierarchy problem, constrained minimal supersymmetric standard model... been. We shall review the multiple solutions and illustrate their existence in a universal model of supersymmetry breaking. 1. Introduction to supersymmetry The recent discovery of the Higgs boson of mass 125–126 GeV at the Large Hadron Collider (LHC...

  10. Multiple stage multiple filter hydrate store

    DOE Patents [OSTI]

    Bjorkman, H.K. Jr.

    1983-05-31T23:59:59.000Z

    An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means for separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means. 7 figs.

  11. Multiple stage multiple filter hydrate store

    DOE Patents [OSTI]

    Bjorkman, Jr., Harry K. (Birmingham, MI)

    1983-05-31T23:59:59.000Z

    An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means or separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means.

  12. Joint Routing, Scheduling And Power Control For Multihop Wireless Networks With Multiple Antennas

    E-Print Network [OSTI]

    Vangala, Harish; Sharma, Prof Vinod

    2011-01-01T23:59:59.000Z

    We consider the problem of Joint Routing, Scheduling and Power-control (JRSP) problem for multihop wireless networks (MHWN) with multiple antennas. We extend the problem and a (sub-optimal) heuristic solution method for JRSP in MHWN with single antennas. We present an iterative scheme to calculate link capacities(achievable rates) in the interference environment of the network using SINR model. We then present the algorithm for solving the JRSP problem. This completes a feasible system model for MHWN when nodes have multiple antennas. We show that the gain we achieve by using multiple antennas in the network is linear both in optimal performance as well as heuristic algorithmic performance.

  13. Problem of Time: Facets and Machian Strategy

    E-Print Network [OSTI]

    Edward Anderson

    2014-07-15T23:59:59.000Z

    The Problem of Time is that `time' in each of ordinary quantum theory and general relativity are mutually incompatible notions. This causes difficulties in trying to put these two theories together to form a theory of Quantum Gravity. The Problem of Time has 8 facets in canonical approaches. I clarify that all but one of these facets already occur at the classical level, and reconceptualize and re-name some of these facets as follows.The Frozen Formalism Problem becomes Temporal Relationalism, the Thin Sandwich Problem becomes Configurational Relationalism, via the notion of Best Matching. The Problem of Observables becomes the Problem of Beables, and the Functional Evolution Problem becomes the Constraint Closure Problem. I also outline how each of the Global and Multiple-Choice Problems of Time have their own plurality of facets. This article additionally contains a local resolution to the Problem of Time at the conceptual level and which is actually realizable for the relational triangle and minisuperspace models. This resolution is, moreover, Machian, and has three levels: classical, semiclassical and a combined semiclassical-histories-timeless records scheme. I end by delineating the current frontiers of this program toward resolution of the Problem of Time in the cases of full GR and of slightly inhomogeneous cosmology.

  14. Multiple gap photovoltaic device

    DOE Patents [OSTI]

    Dalal, Vikram L. (Newark, DE)

    1981-01-01T23:59:59.000Z

    A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

  15. Polycrystal Plasticity -Multiple Slip"

    E-Print Network [OSTI]

    Rollett, Anthony D.

    Polycrystal Plasticity - Multiple Slip" 27-750 Texture, Microstructure & Anisotropy A.D. Rollett;2 Objective" The objective of this lecture is to show how plastic deformation in polycrystals requires of Los Alamos polycrystal plasticity, LApp; also the Viscoplastic Selfconsistent code, VPSC; also

  16. Symmetry in Scheduling Problems

    E-Print Network [OSTI]

    2010-11-16T23:59:59.000Z

    Nov 16, 2010 ... Using operating room and power generator scheduling problems ... suggested that a class of highly symmetric covering problems called Steiner Triple Systems ... The structure of symmetry present in these problems allow for.

  17. Multiple oligo nucleotide arrays: Methods to reduce manufacture time and cost

    E-Print Network [OSTI]

    Ning, Kang

    2010-01-01T23:59:59.000Z

    The customized multiple arrays are becoming vastly used in microarray experiments for varies purposes, mainly for its ability to handle a large quantity of data and output high quality results. However, experimenters who use customized multiple arrays still face many problems, such as the cost and time to manufacture the masks, and the cost for production of the multiple arrays by costly machines. Although there is some research on the multiple arrays, there is little concern on the manufacture time and cost, which is actually important to experimenters. In this paper, we have proposed methods to reduce the time and cost for the manufacture of the customized multiple arrays. We have first introduced a heuristic algorithm for the mask decomposition problem for multiple arrays. Then a streamline method is proposed for the integration of different steps of manufacture on a higher level. Experiments show that our methods are very effective in reduction of the time and cost of manufacture of multiple arrays.

  18. Lecture Notes in Computer Science 1 Distributed Problem Solving and Planning

    E-Print Network [OSTI]

    Blythe, Jim

    Lecture Notes in Computer Science 1 Distributed Problem Solving and Planning Edmund H. Durfee1@umich.edu Abstract. Distributed problem solving involves the collective effort of multiple problems solvers could not have solved as well (if at all) alone. The challenge in distributed problem solving is thus

  19. T-568: Mozilla Firefox Bugs Let Remote Users Conduct Cross-Site...

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

    2.0.12.PatchesSoftware Downloads Update Firefox 3.6.14 Mozilla Downloads SeaMonkey 2.1 Beta 2 Addthis Related Articles T-528: Mozilla FirefoxThunderbirdSeaMonkey Multiple HTML...

  20. U-206: WordPress Flaws Permit Cross-Site Scripting, Cross-Site...

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

    Addthis Related Articles V-078: WordPress Bugs Permit Cross-Site Scripting and Port Scanning Attacks T-597: WordPress Multiple Security Vulnerabilities T-693: Symantec Endpoint...

  1. GENETIC ALGORITHMS APPLIED TO REAL TIME MULTIOBJECTIVE OPTIMIZATION PROBLEMS

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    of searching for multiple solutions concurrently in a single run. Transforming this multiobjective optimizationGENETIC ALGORITHMS APPLIED TO REAL TIME MULTIOBJECTIVE OPTIMIZATION PROBLEMS Z. BINGUL, A. S@harpo.tnstate.edu ABSTRACT Genetic algorithms are often well suited for multiobjective optimization problems. In this work

  2. Multiple capillary biochemical analyzer

    DOE Patents [OSTI]

    Dovichi, N.J.; Zhang, J.Z.

    1995-08-08T23:59:59.000Z

    A multiple capillary analyzer allows detection of light from multiple capillaries with a reduced number of interfaces through which light must pass in detecting light emitted from a sample being analyzed, using a modified sheath flow cuvette. A linear or rectangular array of capillaries is introduced into a rectangular flow chamber. Sheath fluid draws individual sample streams through the cuvette. The capillaries are closely and evenly spaced and held by a transparent retainer in a fixed position in relation to an optical detection system. Collimated sample excitation radiation is applied simultaneously across the ends of the capillaries in the retainer. Light emitted from the excited sample is detected by the optical detection system. The retainer is provided by a transparent chamber having inward slanting end walls. The capillaries are wedged into the chamber. One sideways dimension of the chamber is equal to the diameter of the capillaries and one end to end dimension varies from, at the top of the chamber, slightly greater than the sum of the diameters of the capillaries to, at the bottom of the chamber, slightly smaller than the sum of the diameters of the capillaries. The optical system utilizes optic fibers to deliver light to individual photodetectors, one for each capillary tube. A filter or wavelength division demultiplexer may be used for isolating fluorescence at particular bands. 21 figs.

  3. On Multiple Slice Turbo Codes(1)(2) David Gnaedig*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On Multiple Slice Turbo Codes(1)(2) David Gnaedig* , Emmanuel Boutillon+ , Michel Jézéquel- , Vincent C. Gaudet° and P. Glenn Gulak& * TurboConcept + LESTER. Université de Bretagne Sud - ENST Bretagne.gnaedig@univ-ubs.fr, emmanuel.boutillon@univ-ubs.fr Abstract: The main problem concerning the hardware implementation of turbo

  4. Mapping subtasks with multiple versions on an ad hoc grid

    E-Print Network [OSTI]

    Maciejewski, Anthony A.

    Mapping subtasks with multiple versions on an ad hoc grid S. Shivle a , P. Sugavanam a , H; Mapping; Resource allocation; Task scheduling 1. Introduction and problem statement An ad hoc grid; accepted 15 April 2005 Available online 16 June 2005 Abstract An ad hoc grid is a heterogeneous computing

  5. Explicit force formlulas for two dimensional potential flow with multiple bodies and multiple free vortices

    E-Print Network [OSTI]

    Bai, Chen-Yuan; Wu, Zi-Niu

    2013-01-01T23:59:59.000Z

    For problems with multiple bodies, the current integral approach needs the use of auxiliary potential functions in order to have an individual force formula for each body. While the singularity approach, based on an extension of the unsteady Lagally theorem, is restricted to multibody and multivortex flows without bound vortex and vortex production. In this paper, we consider multibody and multivortex flow and derive force formulas, in both forms of singularity approach and integral approach but without auxiliary function, that give individual forces of each body for unsteady two dimensional potential flow with vortex production on the surface of bodies. A number of problems, including Karman vortex street, Wagner problem of impulsively starting flow, interaction of two circular cylinders with circulation, and interaction of an airfoil with a bound vortex, are used to validate the force formulas.

  6. Multiple layer insulation cover

    DOE Patents [OSTI]

    Farrell, James J. (Livingston Manor, NY); Donohoe, Anthony J. (Ovid, NY)

    1981-11-03T23:59:59.000Z

    A multiple layer insulation cover for preventing heat loss in, for example, a greenhouse, is disclosed. The cover is comprised of spaced layers of thin foil covered fabric separated from each other by air spaces. The spacing is accomplished by the inflation of spaced air bladders which are integrally formed in the cover and to which the layers of the cover are secured. The bladders are inflated after the cover has been deployed in its intended use to separate the layers of the foil material. The sizes of the material layers are selected to compensate for sagging across the width of the cover so that the desired spacing is uniformly maintained when the cover has been deployed. The bladders are deflated as the cover is stored thereby expediting the storage process and reducing the amount of storage space required.

  7. On Multiple Einstein Rings

    E-Print Network [OSTI]

    M. C. Werner; J. An; N. W. Evans

    2008-07-30T23:59:59.000Z

    A number of recent surveys for gravitational lenses have found examples of double Einstein rings. Here, we investigate analytically the occurrence of multiple Einstein rings. We prove, under very general assumptions, that at most one Einstein ring can arise from a mass distribution in a single plane lensing a single background source. Two or more Einstein rings can therefore only occur in multi-plane lensing. Surprisingly, we show that it is possible for a single source to produce more than one Einstein ring. If two point masses (or two isothermal spheres) in different planes are aligned with observer and source on the optical axis, we show that there are up to three Einstein rings. We also discuss the image morphologies for these two models if axisymmetry is broken, and give the first instances of magnification invariants in the case of two lens planes.

  8. Mixed Mode Matrix Multiplication

    SciTech Connect (OSTI)

    Meng-Shiou Wu; Srinivas Aluru; Ricky A. Kendall

    2004-09-30T23:59:59.000Z

    In modern clustering environments where the memory hierarchy has many layers (distributed memory, shared memory layer, cache,...), an important question is how to fully utilize all available resources and identify the most dominant layer in certain computations. When combining algorithms on all layers together, what would be the best method to get the best performance out of all the resources we have? Mixed mode programming model that uses thread programming on the shared memory layer and message passing programming on the distributed memory layer is a method that many researchers are using to utilize the memory resources. In this paper, they take an algorithmic approach that uses matrix multiplication as a tool to show how cache algorithms affect the performance of both shared memory and distributed memory algorithms. They show that with good underlying cache algorithm, overall performance is stable. When underlying cache algorithm is bad, superlinear speedup may occur, and an increasing number of threads may also improve performance.

  9. AM with Multiple Merlins

    E-Print Network [OSTI]

    Scott Aaronson; Russell Impagliazzo; Dana Moshkovitz

    2014-01-27T23:59:59.000Z

    We introduce and study a new model of interactive proofs: AM(k), or Arthur-Merlin with k non-communicating Merlins. Unlike with the better-known MIP, here the assumption is that each Merlin receives an independent random challenge from Arthur. One motivation for this model (which we explore in detail) comes from the close analogies between it and the quantum complexity class QMA(k), but the AM(k) model is also natural in its own right. We illustrate the power of multiple Merlins by giving an AM(2) protocol for 3SAT, in which the Merlins' challenges and responses consist of only n^{1/2+o(1)} bits each. Our protocol has the consequence that, assuming the Exponential Time Hypothesis (ETH), any algorithm for approximating a dense CSP with a polynomial-size alphabet must take n^{(log n)^{1-o(1)}} time. Algorithms nearly matching this lower bound are known, but their running times had never been previously explained. Brandao and Harrow have also recently used our 3SAT protocol to show quasipolynomial hardness for approximating the values of certain entangled games. In the other direction, we give a simple quasipolynomial-time approximation algorithm for free games, and use it to prove that, assuming the ETH, our 3SAT protocol is essentially optimal. More generally, we show that multiple Merlins never provide more than a polynomial advantage over one: that is, AM(k)=AM for all k=poly(n). The key to this result is a subsampling theorem for free games, which follows from powerful results by Alon et al. and Barak et al. on subsampling dense CSPs, and which says that the value of any free game can be closely approximated by the value of a logarithmic-sized random subgame.

  10. Problems on Integration.

    E-Print Network [OSTI]

    2007-07-02T23:59:59.000Z

    INTEGRATION. V2.0. 1. One-liners. Problem 1. True of false: If f is a non-negative function defined on. R and. ?. R f dx < ?, then lim|x|?? f(x) = 0. Problem 2.

  11. Linear Processing for the Downlink in Multiuser MIMO Systems with Multiple Data Streams

    E-Print Network [OSTI]

    Adve, Raviraj

    the reliability and data rate of a transmission. More recently, researchers have investigated using downlink problem with individual SINR constraints in a multiple-input single-output (MISO) system, i

  12. Incoherence and multiple parton interactions

    SciTech Connect (OSTI)

    Calucci, G.; Treleani, D. [Dipartimento di Fisica Teorica dell'Universita di Trieste and INFN, Sezione di Trieste, Strada Costiera 11, Miramare-Grignano, I-34151 Trieste (Italy)

    2009-09-01T23:59:59.000Z

    At the LHC multiple parton interactions will represent an important feature of the minimum bias and of the underlying event, and will give important contributions in many channels of interest in the search for new physics. Different numbers of multiple collisions may contribute to the production of a given final state, and one should expect important interference effects in the regime where different contributions have similar rates. We show, on the contrary, that, once multiple parton interactions are identified by their different topologies, terms with different numbers of multiple parton interactions do not interfere in the final cross section.

  13. Some Optimizations of Hardware Multiplication by Constant Matrices Nicolas Boullis, Arnaud Tisserand

    E-Print Network [OSTI]

    California at Davis, University of

    are achieved. 1 Introduction Important optimizations of the speed, area and power consumption of circuits can of this operation frequency. The problem of the optimization of multiplication by constant has been studiedSome Optimizations of Hardware Multiplication by Constant Matrices Nicolas Boullis, Arnaud

  14. T-604: Google Chrome updated version of the Adobe Flash player...

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

    of the Adobe Flash player April 15, 2011 - 4:30am Addthis PROBLEM: Chrome Stable and Beta channels have been updated to 10.0.648.134 for Windows, Mac, Linux and Chrome Frame...

  15. U-026: Cisco Small Business SRP500 Series Bug Lets Remote Users...

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

    Lets Remote Users Inject Commands November 3, 2011 - 8:15am Addthis PROBLEM: Cisco Small Business SRP500 Series Bug Lets Remote Users Inject Commands. PLATFORM: The following...

  16. T-686: IBM Tivoli Integrated Portal Java Double Literal Denial...

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

    August 8, 2011 - 3:00pm Addthis PROBLEM: A vulnerability in the Java Runtime Environment allows unauthenticated network attacks ( i.e. it may be exploited over a...

  17. T-702: Apache web servers that allows a DOS attack | Department...

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

    2: Apache web servers that allows a DOS attack T-702: Apache web servers that allows a DOS attack August 25, 2011 - 8:00pm Addthis PROBLEM: A denial of service vulnerability has...

  18. T-591: VMware vmrun Utility Lets Local Users Gain Elevated Privileges...

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

    1: VMware vmrun Utility Lets Local Users Gain Elevated Privileges T-591: VMware vmrun Utility Lets Local Users Gain Elevated Privileges March 30, 2011 - 3:05pm Addthis PROBLEM: A...

  19. T-640: RSA Access Manager Server CVE-2011-0322 Update | Department...

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

    7, 2011 - 5:18pm Addthis PROBLEM: ESA-2011-009 (revised): RSA, The Security Division of EMC, announces new fix for potential security vulnerability in RSA Access Manager Server....

  20. Multiple stage railgun

    DOE Patents [OSTI]

    Hawke, Ronald S. (Livermore, CA); Scudder, Jonathan K. (Pleasanton, CA); Aaland, Kristian (Livermore, CA)

    1982-01-01T23:59:59.000Z

    A multiple stage magnetic railgun accelerator (10) for accelerating a projectile (15) by movement of a plasma arc (13) along the rails (11,12). The railgun (10) is divided into a plurality of successive rail stages (10a-n) which are sequentially energized by separate energy sources (14a-n) as the projectile (15) moves through the bore (17) of the railgun (10). Propagation of energy from an energized rail stage back towards the breech end (29) of the railgun (10) can be prevented by connection of the energy sources (14a-n) to the rails (11,12) through isolation diodes (34a-n). Propagation of energy from an energized rail stage back towards the breech end of the railgun can also be prevented by dividing the rails (11,12) into electrically isolated rail sections (11a-n, 12a-n). In such case means (55a-n) are used to extinguish the arc at the end of each energized stage and a fuse (31) or laser device (61) is used to initiate a new plasma arc in the next energized rail stage.

  1. The Equivalence Problem of Multitape Finite Tero Harju and Juhani Karhumaki

    E-Print Network [OSTI]

    Harju, Tero

    The Equivalence Problem of Multitape Finite Automata Tero Harju and Juhani Karhum¨aki Deptartment we solve a long standing open problem in automata theory, namely, the equivalence problem for the multiplicity equivalence of finite automata over conservative monoids embeddable in a fully ordered group. 1

  2. Fitting Parton Distribution Data with Multiplicative Normalization Uncertainties

    E-Print Network [OSTI]

    The NNPDF Collaboration; Richard D. Ball; Luigi Del Debbio; Stefano Forte; Alberto Guffanti; Jose I. Latorre; Juan Rojo; Maria Ubiali

    2010-06-01T23:59:59.000Z

    We consider the generic problem of performing a global fit to many independent data sets each with a different overall multiplicative normalization uncertainty. We show that the methods in common use to treat multiplicative uncertainties lead to systematic biases. We develop a method which is unbiased, based on a self--consistent iterative procedure. We demonstrate the use of this method by applying it to the determination of parton distribution functions with the NNPDF methodology, which uses a Monte Carlo method for uncertainty estimation.

  3. Problem 5 - Purdue University

    E-Print Network [OSTI]

    2011-09-19T23:59:59.000Z

    Sep 20, 2011 ... (Neglect air resistance.) A panel in the Mathematics Department publishes a challenging problem once a week and invites college ...

  4. PROBLEM OF THE WEEK

    E-Print Network [OSTI]

    **This problem is a modi?ed version of one proposed by Michael Roach of New Millemium. Building Systems, who has an engineering application for it.

  5. Drinking Water Problems: Copper 

    E-Print Network [OSTI]

    Dozier, Monty; McFarland, Mark L.; Lesikar, Bruce J.

    2006-01-25T23:59:59.000Z

    High levels of copper in drinking water can cause health problems. This publication explains the effects of copper in water and methods of removing it. 4 pp....

  6. Drinking Water Problems: Copper

    E-Print Network [OSTI]

    Dozier, Monty; McFarland, Mark L.; Lesikar, Bruce J.

    2006-01-25T23:59:59.000Z

    High levels of copper in drinking water can cause health problems. This publication explains the effects of copper in water and methods of removing it. 4 pp....

  7. Collector's problem Byron Schmuland

    E-Print Network [OSTI]

    Schmuland, Byron

    Collector's problem Byron Schmuland Department of Mathematical Sciences University of Alberta the mathematics of the collector's problem. For simplicity, let's assume that you buy cards one at a time, average doesn't mean typical. Some hockey card collectors will need to buy 1525 cards or so, but some

  8. The Guderley problem revisited

    SciTech Connect (OSTI)

    Ramsey, Scott D [Los Alamos National Laboratory; Kamm, James R [Los Alamos National Laboratory; Bolstad, John H [NON LANL

    2009-01-01T23:59:59.000Z

    The self-similar converging-diverging shock wave problem introduced by Guderley in 1942 has been the source of numerous investigations since its publication. In this paper, we review the simplifications and group invariance properties that lead to a self-similar formulation of this problem from the compressible flow equations for a polytropic gas. The complete solution to the self-similar problem reduces to two coupled nonlinear eigenvalue problems: the eigenvalue of the first is the so-called similarity exponent for the converging flow, and that of the second is a trajectory multiplier for the diverging regime. We provide a clear exposition concerning the reflected shock configuration. Additionally, we introduce a new approximation for the similarity exponent, which we compare with other estimates and numerically computed values. Lastly, we use the Guderley problem as the basis of a quantitative verification analysis of a cell-centered, finite volume, Eulerian compressible flow algorithm.

  9. Multiple hypothesis evaluation in auditing

    E-Print Network [OSTI]

    Srivastava, Rajendra P.; Wright, Arnold; Mock, Theodore J.

    2002-11-01T23:59:59.000Z

    , unidentified causes may have led to the fluctuation. A widely accepted approach for modeling multiple hypotheses is to employ a probabilistic revision process (Winterfeldt and Edwards 1986; Winkler and Hays 1975; Luce and Raiffa, 1957). Probability theory...

  10. V-092: Pidgin Multiple Vulnerabilities

    Broader source: Energy.gov [DOE]

    Multiple vulnerabilities have been reported in Pidgin, which can be exploited by malicious people to manipulate certain data, cause a DoS (Denial of Service), and compromise a user's system.

  11. Multiple Motivations Institutional Change Principle

    Broader source: Energy.gov [DOE]

    The multiple motivations principle suggests that a portfolio approach—rather than a single strategy—may be required to achieve change. Research demonstrates that people and institutions adopt new...

  12. Multiple predictor smoothing methods for sensitivity analysis.

    SciTech Connect (OSTI)

    Helton, Jon Craig; Storlie, Curtis B.

    2006-08-01T23:59:59.000Z

    The use of multiple predictor smoothing methods in sampling-based sensitivity analyses of complex models is investigated. Specifically, sensitivity analysis procedures based on smoothing methods employing the stepwise application of the following nonparametric regression techniques are described: (1) locally weighted regression (LOESS), (2) additive models, (3) projection pursuit regression, and (4) recursive partitioning regression. The indicated procedures are illustrated with both simple test problems and results from a performance assessment for a radioactive waste disposal facility (i.e., the Waste Isolation Pilot Plant). As shown by the example illustrations, the use of smoothing procedures based on nonparametric regression techniques can yield more informative sensitivity analysis results than can be obtained with more traditional sensitivity analysis procedures based on linear regression, rank regression or quadratic regression when nonlinear relationships between model inputs and model predictions are present.

  13. Interacting Multiple Model Kalman Filters (IMMKF) Interacting Multiple Model Kalman Filters

    E-Print Network [OSTI]

    Williams, Brian C.

    Interacting Multiple Model Kalman Filters (IMMKF) Interacting Multiple Model Kalman Filters (IMMKF R.Q.A. Santana Interacting Multiple Model Kalman Filters (IMMKF) #12;Interacting Multiple Model Kalman Filters (IMMKF) Sumário 1 Introdução Abordagens de múltiplos modelos Introdução ao Interacting

  14. CRITICAL INFRASTRUCTURE PROTECTION Multiple Efforts to Secure...

    Energy Savers [EERE]

    CRITICAL INFRASTRUCTURE PROTECTION Multiple Efforts to Secure Control Systems Are Under Way, but Challenges Remain CRITICAL INFRASTRUCTURE PROTECTION Multiple Efforts to Secure...

  15. Sandia National Laboratories Problem

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

    Problem Natural disasters such as Hurricane Katrina in New Orleans and the tsunami in Japan in 2011 create emergency situations that must be dealt with quickly and effectively in...

  16. Drinking Water Problems: Radionuclides 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Melton, Rebecca; Hare, Michael; Hopkins, Janie; Dozier, Monty

    2006-08-04T23:59:59.000Z

    Radionuclides in drinking water can cause serious health problems for people. This publication explains what the sources of radionuclides in water are, where high levels have been found in Texas, how they affect health and how to treat water...

  17. Avoiding Calving Problems

    E-Print Network [OSTI]

    Sprott, L. R.

    1998-03-12T23:59:59.000Z

    Calving difficulty, or dystocia, is influenced largely by genetics and the age of the dam. The main cause of calving problems is heavy birthweight. Solutions include selecting the right bull and mating it to properly developed heifers....

  18. A Mathematical Programming Approach for Server Consolidation Problems

    E-Print Network [OSTI]

    Cengarle, María Victoria

    A Mathematical Programming Approach for Server Consolidation Problems in Virtualized Data Centers on dedicated physical servers. Server virtualization provides a technical means for server consolidation. Thus, multiple virtual servers can be hosted on a single server. Server consolidation describes the process

  19. A Study of the Mean Field Approach to Knapsack Problems

    E-Print Network [OSTI]

    Lunds Universitet,

    with linear programming and mean field components is showed to further improve the performance and summations with more than 7 bits (including one sign bit). ffl Linear programming (LP) based on the simplex to multiple knapsacks and generalized assignment problems with Potts mean field equations governing

  20. Aleph Field Solver Challenge Problem Results Summary.

    SciTech Connect (OSTI)

    Hooper, Russell; Moore, Stan Gerald

    2015-01-01T23:59:59.000Z

    Aleph models continuum electrostatic and steady and transient thermal fields using a finite-element method. Much work has gone into expanding the core solver capability to support enriched mod- eling consisting of multiple interacting fields, special boundary conditions and two-way interfacial coupling with particles modeled using Aleph's complementary particle-in-cell capability. This report provides quantitative evidence for correct implementation of Aleph's field solver via order- of-convergence assessments on a collection of problems of increasing complexity. It is intended to provide Aleph with a pedigree and to establish a basis for confidence in results for more challeng- ing problems important to Sandia's mission that Aleph was specifically designed to address.

  1. The Sedov Test Problem

    SciTech Connect (OSTI)

    Fung, Jimmy [Los Alamos National Laboratory; Masser, Thomas [Los Alamos National Laboratory; Morgan, Nathaniel R. [Los Alamos National Laboratory

    2012-06-25T23:59:59.000Z

    The Sedov test is classically defined as a point blast problem. The Sedov problem has led us to advances in algorithms and in their understanding. Vorticity generation can be physical or numerical. Both play a role in Sedov calculations. The RAGE code (Eulerian) resolves the shock well, but produces vorticity. The source definition matters. For the FLAG code (Lagrange), CCH is superior to SGH by avoiding spurious vorticity generation. FLAG SGH currently has a number of options that improve results over traditional settings. Vorticity production, not shock capture, has driven the Sedov work. We are pursuing treatments with respect to the hydro discretization as well as to artificial viscosity.

  2. Multiple reflection solar energy absorber

    SciTech Connect (OSTI)

    Cooley, W.L.

    1993-06-01T23:59:59.000Z

    A method of converting solar energy into heat energy thereby generating power is described comprising the steps: (a) focusing said solar energy by means of a primary concentrator, (b) concentrating said solar energy from said primary concentrator by means of a secondary concentrator located at the focal point of said primary concentrator, (c) slowing the flux of said solar energy from said secondary concentrator by means of a multiple reflection chamber attached to the rear aperture of the secondary concentrator, (d) circulating a working fluid by means of a working fluid delivery tube into said secondary concentrator and said multiple reflection chamber, (e) absorbing said solar energy into said working fluid by means of an ultra high concentration of said solar energy in said multiple reflection chamber, (f) insulating said working fluid by means of a surrounding thermal barrier, (g) exhausting the heat working fluid by means as of a nozzle joined to said multiple reflection chamber, (h) replacing said working fluid by means of a working fluid delivery tube, thereby completing a cycle for generating power.

  3. 6, 81258154, 2006 Multiple scattering

    E-Print Network [OSTI]

    Boyer, Edmond

    ACPD 6, 8125­8154, 2006 Multiple scattering effects for Cloudsat A. Battaglia et al. Title Page A. Battaglia1 , M. O. Ajewole2 , and C. Simmer3 1 Meteorological Institute, University of Bonn, Bonn: 28 August 2006 Correspondence to: A. Battaglia (batta@uni-bonn.de) 8125 #12;ACPD 6, 8125­8154, 2006

  4. Using multiple-criteria methods to evaluate community partitions

    E-Print Network [OSTI]

    Cazabet, Remy; Takeda, Hideaki

    2015-01-01T23:59:59.000Z

    Community detection is one of the most studied problems on complex networks. Although hundreds of methods have been proposed so far, there is still no universally accepted formal definition of what is a good community. As a consequence, the problem of the evaluation and the comparison of the quality of the solutions produced by these algorithms is still an open question, despite constant progress on the topic. In this article, we investigate how using a multi-criteria evaluation can solve some of the existing problems of community evaluation, in particular the question of multiple equally-relevant solutions of different granularity. After exploring several approaches, we introduce a new quality function, called MDensity, and propose a method that can be related both to a widely used community detection metric, the Modularity, and to the Precision/Recall approach, ubiquitous in information retrieval.

  5. Drinking Water Problems: MTBE

    E-Print Network [OSTI]

    Dozier, Monty; Lesikar, Bruce J.

    2008-08-28T23:59:59.000Z

    Methyl tertiary-butyl ether, a gasoline additive commonly known as MTBE, can contaminate ground water and cause health problems for those exposed to it for a long time. However, filtering devices can remove this and other additives from well water...

  6. Linear Programming brewer's problem

    E-Print Network [OSTI]

    Sedgewick, Robert

    : Brewer's problem Small brewery produces ale and beer. · Production limited by scarce resources: corn, hops, barley malt. · Recipes for ale and beer require different proportions of resources. Brewer 160 1190 ale (1 barrel) 5 4 35 13 beer (1 barrel) 15 4 20 23 all ale (34 barrels) 179 136 1190 442 all

  7. Drinking Water Problems: Corrosion

    E-Print Network [OSTI]

    Drinking Water Problems: Corrosion Mark L. McFarland, Tony L. Provin, and Diane E. Boellstorff and fail. Corrosion can cause three types of damage: · The entire metal surface gradually thins and red (Fig. 1). · Deep pits appear that can penetrate pipe or tank walls. This type of corrosion may not add

  8. Problems in Engineering and

    E-Print Network [OSTI]

    Eagar, Thomas W.

    Problems in Engineering and Science Education Why Do We Have a Weakness in Materials Synthesis, Materials Science and Engineering in the 1990s: Maintaining Competitiveness in the Age of Materials science and engi- neering alone; it is symptomatic of the way we teach all science and engineering. We

  9. Regularizing Inverse Problems

    E-Print Network [OSTI]

    Wang, Fang

    2014-06-26T23:59:59.000Z

    (q) include ?q??(2@L^(2 ) )??q??(2@H^(1) ), |q|BV and |q|TV. However, each of these has its limitations. In this work, we develop a novel H^(s) seminorm regularization method and present numerical results for model problems. This method relies...

  10. PP-graphics with a nilpotent elliptic singularity in quadratic systems and Hilbert's 16th problem

    E-Print Network [OSTI]

    Rousseau, Christiane

    PP-graphics with a nilpotent elliptic singularity in quadratic systems and Hilbert's 16th problem of Hilbert's 16th problem for quadratic system, which consists in proving that 121 graphics have finite cyclicity among quadratic systems. We show that any pp-graphic through a multiplicity 3 nilpotent

  11. Feasible Distributed CSP Models for Scheduling Problems Miguel A. Salido, Adriana Giret

    E-Print Network [OSTI]

    Salido, Miguel Angel

    Feasible Distributed CSP Models for Scheduling Problems Miguel A. Salido, Adriana Giret Universidad satisfaction problem (DisCSP) is a CSP in which variables and constraints are distributed among multiple are distributed by using our model. Key words: distributed CSP, constraint satisfaction, holonic system, multi

  12. Spatial Interference Mitigation for Multiple Input Multiple Output Ad Hoc Networks: MISO Gains

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Spatial Interference Mitigation for Multiple Input Multiple Output Ad Hoc Networks: MISO Gains beamforming for a multiple input single output (MISO) ad hoc network to increase the density of successful

  13. FORESTRY 347 MULTIPLE RESOURCE SILVICULTURE

    E-Print Network [OSTI]

    Vonessen, Nikolaus

    FORESTRY 347 MULTIPLE RESOURCE SILVICULTURE Autumn 2008 Instructor: John Goodburn Office: Rm. 409 Science Complex Telephone: 243-4295 Email: goodburn@forestry.umt.edu Office hours: Mon. 3:00 - 5:00 pm.m. Rm. 301 Forestry Bldg. Lab/Field Work Wed or Thur. 2:10 - 6:00 p.m. In Field or Rm. 106 (W) & 206(H

  14. Multiple target laser ablation system

    DOE Patents [OSTI]

    Mashburn, Douglas N. (Knoxville, TN)

    1996-01-01T23:59:59.000Z

    A laser ablation apparatus and method are provided in which multiple targets consisting of material to be ablated are mounted on a movable support. The material transfer rate is determined for each target material, and these rates are stored in a controller. A position detector determines which target material is in a position to be ablated, and then the controller controls the beam trigger timing and energy level to achieve a desired proportion of each constituent material in the resulting film.

  15. Multiple target laser ablation system

    DOE Patents [OSTI]

    Mashburn, D.N.

    1996-01-09T23:59:59.000Z

    A laser ablation apparatus and method are provided in which multiple targets consisting of material to be ablated are mounted on a movable support. The material transfer rate is determined for each target material, and these rates are stored in a controller. A position detector determines which target material is in a position to be ablated, and then the controller controls the beam trigger timing and energy level to achieve a desired proportion of each constituent material in the resulting film. 3 figs.

  16. On Multiple Gluon Exchange Webs

    E-Print Network [OSTI]

    Mark Harley

    2015-05-21T23:59:59.000Z

    I present an overview of the study of infrared singularities through the eikonal approximation and the concept of webs. Our work reveals the interesting structure of an infinite subclass of webs, Multiple Gluon Exchange Webs. We find that they can be expressed as sums of products of functions depending upon only a single cusp angle, spanned by a simple basis of functions, and conjecture that this structure will hold to all orders.

  17. Declarative Problem Solving through Abduction

    E-Print Network [OSTI]

    Moraitis, Pavlos

    1 Declarative Problem Solving through Abduction Antonis C. Kakas Department of Computer Science PROBLEM SOLVING through Logical Representations (or models) of problems and the use of ABDUCTIVE REASONING · Acquire expertise in Declarative Problem Solving using the representation framework of ABDUCTIVE LOGIC

  18. Cooperative target convergence using multiple agents

    SciTech Connect (OSTI)

    Kwok, K.S.; Driessen, B.J.

    1997-10-01T23:59:59.000Z

    This work considers the problem of causing multiple (100`s) autonomous mobile robots to converge to a target and provides a follow-the-leader approach to the problem. Each robot has only a limited-range sensor for sending the target and also larger but also limited-range robot-to-robot communication capability. Because of the small amount of information available to the robots, a practical approach to improve convergence to the target is to have a robot follow the robot with the best quality of information. Specifically, each robot emits a signal that informs in-range robots what its status is. A robot has a status value of 0 if it is itself in range of the target. A robot has a status of 1 if it is not in range of the target but is in communication range of a robot that is in range of the target. A robot has a status of 2 if it is not in range of the target but is within range of another robot that has status 1, and so on. Of all the mobile robots that any given robot is in range of, it follows the one with the best status. The emergent behavior is the ant-like trails of robots following each other toward the target. If the robot is not in range of another robot that is either in range of the target or following another robot, the robot will assign-1 to its quality-of-information, and will execute an exhaustive search. The exhaustive search will continue until it encounters either the target or another robot with a nonnegative quality-of-information. The quality of information approach was extended to the case where each robot only has two-bit signals informing it of distance to in-range robots.

  19. Multiple sequence alignment Robert C Edgar1

    E-Print Network [OSTI]

    Batzoglou, Serafim

    Multiple sequence alignment Robert C Edgar1 and Serafim Batzoglou2 Multiple sequence alignments-9025, USA Corresponding author: Edgar, Robert C (bob@drive5.com) Current Opinion in Structural Biology 2006

  20. Constant-Optimized Quantum Circuits for Modular Multiplication and Exponentiation

    E-Print Network [OSTI]

    Igor L. Markov; Mehdi Saeedi

    2015-04-02T23:59:59.000Z

    Reversible circuits for modular multiplication $Cx$%$M$ with $xproblem. Some of our modular-multiplication circuits are asymptotically smaller than previous constructions, but worst-case bounds and average sizes remain $\\Theta(n^2)$. In the context of modular exponentiation, we offer several constant-factor improvements, as well as an improvement by a constant additive term that is significant for few-qubit circuits arising in ongoing laboratory experiments with Shor's algorithm.

  1. A Multiple-Porosity Model for A Single-Phase Flow Through Naturally-Fractured Porous Media

    E-Print Network [OSTI]

    Douglas Jr., Jim

    compressible uid in a multiscale, naturally-fractured reservoir is presented. The problem can serve as a modelA Multiple-Porosity Model for A Single-Phase Flow Through Naturally-Fractured Porous Media Jim counterpart. Further, a model for the (N + 1)-scale problem in a fractured medium is derived. The well

  2. Multiple Sequence Alignments BIOC 218 Final Project

    E-Print Network [OSTI]

    Multiple Sequence Alignments BIOC 218 Final Project Amy Zou Multiple sequence alignments (MSAs relationship between the different sequences, and can give information pertinent to phylogenetic analysis, it is inefficient to use to generate an alignment for multiple sequences. Because the computational complexity

  3. Drinking Water Problems: Lead

    E-Print Network [OSTI]

    Dozier, Monty; McFarland, Mark L.

    2004-02-20T23:59:59.000Z

    A lmost everyone knows that lead-based paint caused serious health problems (especially in children) before it was banned. But not everyone is aware that people can ingest lead from other sources such as contaminat- ed food and drinking water... sources of lead con- tamination. But if your water comes from a private well, it might contain enough lead to warrant action. How does lead affect health? Lead can be absorbed through the digestive tract, the lungs and the skin. It accumulates in the body...

  4. An inexact labeling problem

    E-Print Network [OSTI]

    Murray, Margaret Shuey

    1984-01-01T23:59:59.000Z

    of prototype and candidate objects - . 1'7 3 ~ Tree showing possible unit-label assignments for the example of Figut'e 2 (p. 17) 4. Candidate and prototype objects 5. A 3x3 pixel window . . . ~ 6. S, r parameterization of a line 20 30 36 38 7. A... with the matching problem. Haralick and Shapiro [5] deal with a set of units, (u(, ~ . . . u }, and a set of labels, L (II, . . . , I 1 . For any n units ~ \\ qp (ul, . ~ . , u , n labels from L, 11, . . . , 1 ), can be selected and called a labeling of (ul...

  5. Euclid Known Problems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) Environmental Assessments (EA) /Email Announcements Archive EmailKnown Problems Known

  6. Caustics in special multiple lenses

    E-Print Network [OSTI]

    V. Bozza

    2000-01-13T23:59:59.000Z

    Despite its mathematical complexity, the multiple gravitational lens can be studied in detail in every situation where a perturbative approach is possible. In this paper, we examine the caustics of a system with a lens very far from the others with respect to their Einstein radii, and a system where mutual distances between lenses are small compared to the Einstein radius of the total mass. Finally we review the case of a planetary system adding some new information (area of caustics, duality and higher order terms).

  7. Multiple piece turbine rotor blade

    DOE Patents [OSTI]

    Jones, Russell B; Fedock, John A

    2013-05-21T23:59:59.000Z

    A multiple piece turbine rotor blade with a shell having an airfoil shape and secured between a spar and a platform with the spar including a tip end piece. a snap ring fits around the spar and abuts against the spar tip end piece on a top side and abuts against a shell on the bottom side so that the centrifugal loads from the shell is passed through the snap ring and into the spar and not through a tip cap dovetail slot and projection structure.

  8. The Primordial Lithium Problem

    E-Print Network [OSTI]

    Brian D. Fields

    2012-03-15T23:59:59.000Z

    Big-bang nucleosynthesis (BBN) theory, together with the precise WMAP cosmic baryon density, makes tight predictions for the abundances of the lightest elements. Deuterium and 4He measurements agree well with expectations, but 7Li observations lie a factor 3-4 below the BBN+WMAP prediction. This 4-5\\sigma\\ mismatch constitutes the cosmic "lithium problem," with disparate solutions possible. (1) Astrophysical systematics in the observations could exist but are increasingly constrained. (2) Nuclear physics experiments provide a wealth of well-measured cross-section data, but 7Be destruction could be enhanced by unknown or poorly-measured resonances, such as 7Be + 3He -> 10C^* -> p + 9B. (3) Physics beyond the Standard Model can alter the 7Li abundance, though D and 4He must remain unperturbed; we discuss such scenarios, highlighting decaying Supersymmetric particles and time-varying fundamental constants. Present and planned experiments could reveal which (if any) of these is the solution to the problem.

  9. Identification of Severe Multiple Contingencies in Electric PowerNetworks

    SciTech Connect (OSTI)

    Donde, Vaibhav; Lopez, Vanessa; Lesieutre, Bernard; Pinar, Ali; Yang,Chao; Meza, Juan

    2005-07-01T23:59:59.000Z

    In this paper we propose a two-stage screening and analysis process for identifying multiple contingencies that may result in very severe disturbances and blackouts. In a screening stage we form an optimization problem to find the minimum change in the network to move the power flow feasibility boundary to the present operating point and that will cause the system to separate with a user-specified power imbalance. The lines identified by the optimization program are used in a subsequent analysis stage to find combinations that may lead to a blackout. This approach is applied to a 30-bus system with encouraging results.

  10. Multiple systems or task complexity 1 Running head: Multiple systems or task complexity

    E-Print Network [OSTI]

    Stoiciu, Mihai

    Multiple systems or task complexity 1 Running head: Multiple systems or task complexity Procedural memory effects in categorization: evidence for multiple systems or task complexity? Safa R. Zaki and Dave College Williamstown, MA 10267 413-597-4594 Email: szaki@williams.edu #12;Multiple systems or task

  11. Multiple protocol fluorometer and method

    DOE Patents [OSTI]

    Kolber, Zbigniew S. (Shoreham, NY); Falkowski, Paul G. (Stony Brook, NY)

    2000-09-19T23:59:59.000Z

    A multiple protocol fluorometer measures photosynthetic parameters of phytoplankton and higher plants using actively stimulated fluorescence protocols. The measured parameters include spectrally-resolved functional and optical absorption cross sections of PSII, extent of energy transfer between reaction centers of PSII, F.sub.0 (minimal), F.sub.m (maximal) and F.sub.v (variable) components of PSII fluorescence, photochemical and non-photochemical quenching, size of the plastoquinone (PQ) pool, and the kinetics of electron transport between Q.sub.a and PQ pool and between PQ pool and PSI. The multiple protocol fluorometer, in one embodiment, is equipped with an excitation source having a controlled spectral output range between 420 nm and 555 nm and capable of generating flashlets having a duration of 0.125-32 .mu.s, an interval between 0.5 .mu.s and 2 seconds, and peak optical power of up to 2 W/cm.sup.2. The excitation source is also capable of generating, simultaneous with the flashlets, a controlled continuous, background illumination.

  12. Multiple channel data acquisition system

    DOE Patents [OSTI]

    Crawley, H. Bert (Ames, IA); Rosenberg, Eli I. (Ames, IA); Meyer, W. Thomas (Ames, IA); Gorbics, Mark S. (Ames, IA); Thomas, William D. (Boone, IA); McKay, Roy L. (Ames, IA); Homer, Jr., John F. (Ames, IA)

    1990-05-22T23:59:59.000Z

    A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory. The local processor executes programs which are downloaded to the module memory through the FASTBUS coupler.

  13. Multiple channel data acquisition system

    DOE Patents [OSTI]

    Crawley, H.B.; Rosenberg, E.I.; Meyer, W.T.; Gorbics, M.S.; Thomas, W.D.; McKay, R.L.; Homer, J.F. Jr.

    1990-05-22T23:59:59.000Z

    A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory. The local processor executes programs which are downloaded to the module memory through the FASTBUS coupler. 25 figs.

  14. Modeling applied to problem solving

    E-Print Network [OSTI]

    Pawl, Andrew

    We describe a modeling approach to help students learn expert problem solving. Models are used to present and hierarchically organize the syllabus content and apply it to problem solving, but students do not develop and ...

  15. The optimization problem Genetic Algorithm

    E-Print Network [OSTI]

    Giménez, Domingo

    The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results for time-power optimization META, October 27-31, 2014 1 / 25 #12;The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results Conclusions Time and energy optimization Traditionally

  16. The prediction problem Empirical studies

    E-Print Network [OSTI]

    McCullagh, Peter

    The prediction problem Empirical studies Details and summary Conditional prediction intervals 2009 Peter McCullagh, V. Vovk, I. Nouretdinov, D. Devetyarov and A. Gammerman #12;The prediction problem Empirical studies Details and summary Outline 1 The prediction problem Linear regression model

  17. An analysis of shaft/shaft seal interaction of a multiple disk centrifugal blood pump

    E-Print Network [OSTI]

    Manning, Keefe Baird

    1997-01-01T23:59:59.000Z

    A multiple disk centrifugal blood pump is in the early stages of development. As is the case with most pumps that are shaft driven, leakage problems around the shaft/shaft seal interface are of major interest. If leakage were to occur during...

  18. Multiple Model Robust Dynamic Programming Eric C. Whitman and Christopher G. Atkeson

    E-Print Network [OSTI]

    -- Modeling error is a common problem for model- based control techniques. We present multiple model dynamic programming (MMDP) as a method to generate controllers that are robust to modeling error. Our method generates controllers that are approximately optimal for a collection of models, thereby forcing the controller

  19. Joint Routing and Server Selection for Multiple Description Video Streaming in Ad Hoc Networks

    E-Print Network [OSTI]

    Hou, Y. Thomas

    Joint Routing and Server Selection for Multiple Description Video Streaming in Ad Hoc Networks ad hoc networks. In this paper, we study the important problem of joint routing and server selection by the proposed approach over existing server selection schemes. This justifies the importance of jointly

  20. Multiple Object Manipulation: is structural modularity necessary? A study of the MOSAIC and CARMA models

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -UPMF Grenoble, France Abstract A model that tackles the Multiple Object Manipulation task computationally solves the manipulation problem with a single controller. We provide experimental and theoretical evidence that tend forces? These two questions are central in object manipulation: control and pre- diction, respectively

  1. RELEVANT ASPECTS IN THE MULTIPLE MINIMAL METHOD IN BIOTECHNOLOGY Ezio Marchi

    E-Print Network [OSTI]

    ] The aplication of the method have been successful as for example in a new approach to the multiple-minima problem, whereby the molecule evolves toward conformations in which the charge distribution becomes energetically but energetically unfavorable local energy minimum. We describe the implementation of a model based

  2. Real-time multiplicity counter

    DOE Patents [OSTI]

    Rowland, Mark S. (Alamo, CA); Alvarez, Raymond A. (Berkeley, CA)

    2010-07-13T23:59:59.000Z

    A neutron multi-detector array feeds pulses in parallel to individual inputs that are tied to individual bits in a digital word. Data is collected by loading a word at the individual bit level in parallel. The word is read at regular intervals, all bits simultaneously, to minimize latency. The electronics then pass the word to a number of storage locations for subsequent processing, thereby removing the front-end problem of pulse pileup.

  3. Multiple-stage integrating accelerometer

    DOE Patents [OSTI]

    Devaney, H.F.

    1984-06-27T23:59:59.000Z

    An accelerometer assembly is provided for use in activating a switch in response to multiple acceleration pulses in series. The accelerometer includes a housing forming a chamber. An inertial mass or piston is slidably disposed in the chamber and spring biased toward a first or reset position. A damping system is also provided to damp piston movement in response to first and subsequent acceleration pulses. Additionally, a cam, including a Z-shaped slot, and cooperating follower pin slidably received therein are mounted to the piston and the housing. The middle or cross-over leg of the Z-shaped slot cooperates with the follower pin to block or limit piston movement and prevent switch activation in response to a lone acceleration pulse. The switch of the assembly is only activated after two or more separate acceleration pulses are sensed and the piston reaches the end of the chamber opposite the reset position.

  4. Multiple-stage integrating accelerometer

    DOE Patents [OSTI]

    Devaney, Howard F. (Cedar Crest, NM)

    1986-01-01T23:59:59.000Z

    An accelerometer assembly is provided for use in activating a switch in response to multiple acceleration pulses in series. The accelerometer includes a housing forming a chamber. An inertial mass or piston is slidably disposed in the chamber and spring biased toward a first or reset position. A damping system is also provided to damp piston movement in response to first and subsequent acceleration pulses. Additionally, a cam, including a Z-shaped slot, and cooperating follower pin slidably received therein are mounted to the piston and the housing. The middle or cross-over leg of the Z-shaped slot cooperates with the follower pin to block or limit piston movement and prevent switch activation in response to a lone acceleration pulse. The switch of the assembly is only activated after two or more separate acceleration pulses are sensed and the piston reaches the end of the chamber opposite the reset position.

  5. Query complexity for searching multiple marked states from an unsorted database

    E-Print Network [OSTI]

    Bin Shang

    2006-04-10T23:59:59.000Z

    An important and usual problem is to search all states we want from a database with a large number of states. In such, recall is vital. Grover's original quantum search algorithm has been generalized to the case of multiple solutions, but no one has calculated the query complexity in this case. We will use a generalized algorithm with higher precision to solve such a search problem that we should find all marked states and show that the practical query complexity increases with the number of marked states. In the end we will introduce an algorithm for the problem on a ``duality computer'' and show its advantage over other algorithms.

  6. Large Spectral Library Problem

    SciTech Connect (OSTI)

    Chilton, Lawrence K.; Walsh, Stephen J.

    2008-10-03T23:59:59.000Z

    Hyperspectral imaging produces a spectrum or vector at each image pixel. These spectra can be used to identify materials present in the image. In some cases, spectral libraries representing atmospheric chemicals or ground materials are available. The challenge is to determine if any of the library chemicals or materials exist in the hyperspectral image. The number of spectra in these libraries can be very large, far exceeding the number of spectral channels collected in the ¯eld. Suppose an image pixel contains a mixture of p spectra from the library. Is it possible to uniquely identify these p spectra? We address this question in this paper and refer to it as the Large Spectral Library (LSL) problem. We show how to determine if unique identi¯cation is possible for any given library. We also show that if p is small compared to the number of spectral channels, it is very likely that unique identi¯cation is possible. We show that unique identi¯cation becomes less likely as p increases.

  7. On the State Agreement Problem for Multiple Unicycles with Varying Communication Links

    E-Print Network [OSTI]

    Dimarogonas, Dimos

    Navigation of multi-agent systems is a topic that has recently attracted researchers from both the robotics and the control communities, due to the need for autonomous control of more than one mobile robotic agents such important application is the field of micro robotics ([12]), where a team of a potentially large number

  8. Application of the residue number system to the matrix multiplication problem

    E-Print Network [OSTI]

    Chard, Gary Franklin

    1989-01-01T23:59:59.000Z

    number system I 4, 9-12]. As a verification on the design process, and as a check on the timing information, the design will be simulated on an Apollo workstation using Mentor Graphics' Neted and Quicksim design tools. CHAPTER TI BACKGROUND During... on the interval (O, M-1). The following example illustrates the process of addition for a given set of moduli. For the moduli 3, 4, 5, and 13( (M 780) add 124 & ? ? ? & ( 1, 79 &---& { 1, 4, 3, 4, 7 124 0 I 4, 7 ) + 79 1, 3, 4, 1 /203/w 203 3 3 8...

  9. 5/3-Approximation Algorithm for a Multiple Depot, Terminal Hamiltonian Path Problem

    E-Print Network [OSTI]

    Sivakumar, Rathinam; Sengupta, Raja

    2007-01-01T23:59:59.000Z

    it is not a depot or a terminal vertex and its degree isdegree is even. – it is a terminal vertex and its degree isthe depot vertex and the terminal vertex. v. Construct an

  10. On a Routing and Scheduling Problem Concerning Multiple Edge Traversals in Graphs

    E-Print Network [OSTI]

    van Vuuren, Jan H.

    include bus routing [1, 4, 5, 8, 10], meter reading [38, 40], control of plotting and drilling machines [24], optimiza- tion of laser­plotter beam movements [22], mail delivery [32, 37], garbage collection

  11. Multiple Nested Beltrami regions as a Solution to the 3-D Toroidal MHD Equilibrium Problem

    E-Print Network [OSTI]

    Hudson, Stuart

    .L. Dewar1 , M.J. Hole1 , S.R. Hudson2 and M. McGann1 1 Department of Theoretical Physics and Plasma Research Laboratory, Research School of Physical Sciences and Engineering, The Australian National

  12. The Multiple-Sets Split Feasibility Problem and Its Applications for ...

    E-Print Network [OSTI]

    User

    2005-10-06T23:59:59.000Z

    Oct 6, 2005 ... SE-581 83 Linköping, Sweden (toelf@mai.liu.se). 3Department of Radiation Oncology. Massachusetts General Hospital (MGH) and Harvard ...

  13. Honey Bee Behavior: A Multi-agent Approach for Multiple Campaigns Assignment Problem

    E-Print Network [OSTI]

    Cho, Sung-Bae

    simulation studies are carried out varying on the small to large scale of the customer-campaign assignment of companies ranging from small to large scale, to provide personalized services for customers. In order for a specific campaign tends to be inclined for other campaigns. If we conduct inde- pendent campaigns without

  14. Fermentation, Hydrogen, and Sulfur Metabolism in Multiple Uncultivated...

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

    Fermentation, Hydrogen, and Sulfur Metabolism in Multiple Uncultivated Bacterial Phyla. Fermentation, Hydrogen, and Sulfur Metabolism in Multiple Uncultivated Bacterial Phyla....

  15. Systems analysis of multiple regulator perturbations allows discoveryo...

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

    Systems analysis of multiple regulator perturbations allows discoveryof virulence factors in Salmonella. Systems analysis of multiple regulator perturbations allows discoveryof...

  16. An investigation of potential urban freeway guide sign problem locations in Houston, Texas

    E-Print Network [OSTI]

    Skowronek, Douglas Albert

    1990-01-01T23:59:59.000Z

    Transportation Institute has collected video and photographic field data at 23 sites that were identified by the motoring public as potential guide signing problem areas. The most frequent motorist complaint was insufficient advance information. Other frequent... complaints included insufficient lane assignment and confusing or unclear information. The most common geometric feature of the sites was a multiple lane exit. There were a total of 19 multiple lane exits and 14 of those included an optional lane exit...

  17. Interested Parties - Multiple Loan Applications per Developer...

    Energy Savers [EERE]

    Documents & Publications Interested Parties - Allowing Multiple Projects per Application for Section 1705 Loan Guarantees Interested Parties - K&L Group Interested Parties - Shipp...

  18. Studies in nonlinear problems of energy

    SciTech Connect (OSTI)

    Matkowsky, B.J.

    1992-07-01T23:59:59.000Z

    Emphasis has been on combustion and flame propagation. The research program was on modeling, analysis and computation of combustion phenomena, with emphasis on transition from laminar to turbulent combustion. Nonlinear dynamics and pattern formation were investigated in the transition. Stability of combustion waves, and transitions to complex waves are described. Combustion waves possess large activation energies, so that chemical reactions are significant only in thin layers, or reaction zones. In limit of infinite activation energy, the zones shrink to moving surfaces, (fronts) which must be found during the analysis, so that (moving free boundary problems). The studies are carried out for limiting case with fronts, while the numerical studies are carried out for finite, though large, activation energy. Accurate resolution of the solution in the reaction zones is essential, otherwise false predictions of dynamics are possible. Since the the reaction zones move, adaptive pseudo-spectral methods were developed. The approach is based on a synergism of analytical and computational methods. The numerical computations build on and extend the analytical information. Furthermore, analytical solutions serve as benchmarks for testing the accuracy of the computation. Finally, ideas from analysis (singular perturbation theory) have induced new approaches to computations. The computational results suggest new analysis to be considered. Among the recent interesting results, was spatio-temporal chaos in combustion. One goal is extension of the adaptive pseudo-spectral methods to adaptive domain decomposition methods. Efforts have begun to develop such methods for problems with multiple reaction zones, corresponding to problems with more complex, and more realistic chemistry. Other topics included stochastics, oscillators, Rysteretic Josephson junctions, DC SQUID, Markov jumps, laser with saturable absorber, chemical physics, Brownian movement, combustion synthesis, etc.

  19. Neutron Multiplicity Measurements With 3He Alternative: Straw Neutron Detectors

    SciTech Connect (OSTI)

    Mukhopadhyay, Sanjoy

    2015-01-01T23:59:59.000Z

    Counting neutrons emitted by special nuclear material (SNM) and differentiating them from the background neutrons of various origins is the most effective passive means of detecting SNM. Unfortunately, neutron detection, counting, and partitioning in a maritime environment are complex due to the presence of high-multiplicity spallation neutrons (commonly known as ‘‘ship effect ’’) and to the complicated nature of the neutron scattering in that environment. A prototype neutron detector was built using 10B as the converter in a special form factor called ‘‘straws’’ that would address the above problems by looking into the details of multiplicity distributions of neutrons originating from a fissioning source. This paper describes the straw neutron multiplicity counter (NMC) and assesses the performance with those of a commercially available fission meter. The prototype straw neutron detector provides a large-area, efficient, lightweight, more granular (than fission meter) neutron-responsive detection surface (to facilitate imaging) to enhance the ease of application of fission meters. Presented here are the results of preliminary investigations, modeling, and engineering considerations leading to the construction of this prototype. This design is capable of multiplicity and Feynman variance measurements. This prototype may lead to a near-term solution to the crisis that has arisen from the global scarcity of 3He by offering a viable alternative to fission meters. This paper describes the work performed during a 2-year site-directed research and development (SDRD) project that incorporated straw detectors for neutron multiplicity counting. The NMC is a two-panel detector system. We used 10B (in the form of enriched boron carbide: 10B4C) for neutron detection instead of 3He. In the first year, the project worked with a panel of straw neutron detectors, investigated its characteristics, and developed a data acquisition (DAQ) system to collect neutron multiplicity information from spontaneous fission sources using a single panel consisting of 60 straws equally distributed over three rows in high-density polyethylenemoderator. In the following year, we developed the field-programmable gate array and associated DAQ software. This SDRD effort successfully produced a prototype NMC with*33% detection efficiency compared to a commercial fission meter.

  20. Code design for multiple-input multiple-output broadcast channels

    E-Print Network [OSTI]

    Uppal, Momin Ayub

    2009-06-02T23:59:59.000Z

    Recent information theoretical results indicate that dirty-paper coding (DPC) achieves the entire capacity region of the Gaussian multiple-input multiple-output (MIMO) broadcast channel (BC). This thesis presents practical code designs for Gaussian...

  1. Semidefinite Relaxations of Ordering Problems

    E-Print Network [OSTI]

    2011-01-19T23:59:59.000Z

    Jan 19, 2011 ... from z? only in an additive constant. We are now dropping the ...... Machine Layout Problem in Flexible Manufacturing Systems. Operations.

  2. Pooling problems: relaxations and discretizations

    E-Print Network [OSTI]

    2013-09-02T23:59:59.000Z

    also possible to send flow directly from inputs to the outputs. ... mid-term planning problem that is designed to answer the optimal process control decisions in.

  3. Inverse Problems in Transport Theory

    E-Print Network [OSTI]

    The inverse scattering problem for (2.1) is the following: Does S determine ...... J. Voigt, Spectral properties of the neutron transport equation, J. Math. Anal. Appl.

  4. Concatenated codes for the multiple-input multiple-output quasi-static fading channel

    E-Print Network [OSTI]

    Gulati, Vivek

    2005-02-17T23:59:59.000Z

    CONCATENATED CODES FOR THE MULTIPLE-INPUT MULTIPLE-OUTPUT QUASI-STATIC FADING CHANNEL A Dissertation by VIVEK GULATI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF PHILOSOPHY December 2004 Major Subject: Electrical Engineering CONCATENATED CODES FOR THE MULTIPLE-INPUT MULTIPLE-OUTPUT QUASI-STATIC FADING CHANNEL A Dissertation by VIVEK GULATI Submitted to Texas A&M University in partial fulfillment...

  5. Dynamic Behavior of Multiple Inversions Senior Thesis

    E-Print Network [OSTI]

    Popovic, Jovan

    Dynamic Behavior of Multiple Inversions Ilya Baran Senior Thesis Boston University Academy Under functions. To iterate a function means to compose it with itself multiple times. Unless stated otherwise, we a circle centered at O with radius r is a point A 0 on the ray \\Gamma! OA such that OA r = r OA 0 (see

  6. Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage Systems*

    E-Print Network [OSTI]

    Pedram, Massoud

    Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage massimo.poncino@polito.it Abstract-- Hybrid electrical energy storage (HEES) systems consist of multiple banks of heterogeneous electrical energy storage (EES) elements that are connected to each other through

  7. Microstructural parameters from Multiple Whole Profile (MWP) or Convolutional Multiple Whole Profile

    E-Print Network [OSTI]

    Balzar, Davor

    Microstructural parameters from Multiple Whole Profile (MWP) or Convolutional Multiple Whole Profile (CMWP) computer programs 54th Annual Denver X-ray Conference Line Profile Analysis Workshop system, 2) hexagonal crystal system, 4) MWP (Multiple Whole Profile Fitting), 5) CMWP (Convolutional

  8. Optimization problems with value function objectives

    E-Print Network [OSTI]

    2011-11-01T23:59:59.000Z

    max programming problem and the bilevel optimization problem. In this paper, we ... 1. Introduction. An optimization problem with value function objective is a.

  9. The Traveling Salesman Problem with Flexible Coloring

    E-Print Network [OSTI]

    Roemer, T. A.; Ahmadi, R.; Dasu, S.

    2011-01-01T23:59:59.000Z

    Salesman Problem with Flexible Coloring Thomas A. Roemer TheSalesman Problem with Flexible Colors (? ?? ?? ). We note,Salesman Problem with Flexible Colors (? ?? ?? ) can

  10. A PC-based telemetry system for acquiring and reducing data from multiple PCM streams

    SciTech Connect (OSTI)

    Simms, D A; Butterfield, C P

    1991-07-01T23:59:59.000Z

    The Solar Energy Research Institute's (SERI) Wind Research Program is using Pulse Code Modulation (PCM) telemetry data-acquisition systems to study horizontal-axis wind turbines. Many PCM systems are combined for use in test installations that require accurate measurements from a variety of different locations. SERI has found them ideal for data-acquisition from multiple wind turbines and meteorological towers in wind parks. A major problem has been in providing the capability to quickly combine and examine incoming data from multiple PCM sources in the field. To solve this problem, SERI has developed a low-cost PC-based PCM telemetry data-reduction system to facilitate quick, in-the-field multiple-channel data analysis. Called the PC-PCM System,'' it consists of two basic components. First, PC-compatible hardware boards are used to decode and combine multiple PCM data streams. Up to four hardware boards can be installed in a single PC, which provides the capability to combine data from four PCM streams directly to PC disk or memory. Each stream can have up to 62 data channels. Second, a software package written for use under DOS was developed to simplify data-acquisition control and management. The software provides a quick, easy-to-use interface between the PC and multiple PCM data streams. Called the Quick-Look Data Management Program,'' it is a comprehensive menu-driven package used to organize, acquire, process, and display information from incoming PCM data streams. The paper describes both hardware and software aspects of the SERI PC-PCM system, concentrating on features that make it useful in an experiment test environment to quickly examine and verify incoming data from multiple PCM streams. Also discussed are problems and techniques associated with PC-based telemetry data-acquisition, processing, and real-time display. 11 refs., 2 figs., 3 tabs.

  11. Declarative Problem Solving through Abduction

    E-Print Network [OSTI]

    Moraitis, Pavlos

    1 Declarative Problem Solving through Abduction Antonis C. Kakas Department of Computer Science, 2007 Paris, France #12;2 Course Breakdown · Introduction · Abduction ­ General Introduction · Modelling Problems for Abduction and DPS · Computational Logic & PROLOG ­ Background · Abductive Logic Programming

  12. MATRIXDEPENDENT MULTIGRIDHOMOGENIZATION FOR DIFFUSION PROBLEMS

    E-Print Network [OSTI]

    Bebendorf, Mario

    , such as matrix­ dependent prolongations and the construction of coarse­grid operators by means of the Galerkin. Introduction. Solutions for problems which model locally strong varying phe­ nomena on a micro­scale level require that all length scales present in the problem are completely resolved. However, due to storage

  13. PROBLEM SETS: Fundamentals of Transportation

    E-Print Network [OSTI]

    Daganzo, Carlos F.

    on the publications section of Carlos Daganzo's world wide web home page at http improved the wording, graphics and notation of many of the problems, and facilitated the internet comments on several problem statements. Thanks also go to Ms. Alison Andreas for her excellent word

  14. Holographic superconductor with multiple competing condensates

    E-Print Network [OSTI]

    Grabowska, Dorota M

    2010-01-01T23:59:59.000Z

    Holography is a novel approach to modeling strongly interacting many-body systems. By reorganizing the quantum many-body problem into an equivalent problem in classical gravity, holography makes it relatively easy, for ...

  15. Modeling Multiple Causes of Carcinogenesis

    SciTech Connect (OSTI)

    Jones, T.D.

    1999-01-24T23:59:59.000Z

    An array of epidemiological results and databases on test animal indicate that risk of cancer and atherosclerosis can be up- or down-regulated by diet through a range of 200%. Other factors contribute incrementally and include the natural terrestrial environment and various human activities that jointly produce complex exposures to endotoxin-producing microorganisms, ionizing radiations, and chemicals. Ordinary personal habits and simple physical irritants have been demonstrated to affect the immune response and risk of disease. There tends to be poor statistical correlation of long-term risk with single agent exposures incurred throughout working careers. However, Agency recommendations for control of hazardous exposures to humans has been substance-specific instead of contextually realistic even though there is consistent evidence for common mechanisms of toxicological and carcinogenic action. That behavior seems to be best explained by molecular stresses from cellular oxygen metabolism and phagocytosis of antigenic invasion as well as breakdown of normal metabolic compounds associated with homeostatic- and injury-related renewal of cells. There is continually mounting evidence that marrow stroma, comprised largely of monocyte-macrophages and fibroblasts, is important to phagocytic and cytokinetic response, but the complex action of the immune process is difficult to infer from first-principle logic or biomarkers of toxic injury. The many diverse database studies all seem to implicate two important processes, i.e., the univalent reduction of molecular oxygen and breakdown of aginuine, an amino acid, by hydrolysis or digestion of protein which is attendant to normal antigen-antibody action. This behavior indicates that protection guidelines and risk coefficients should be context dependent to include reference considerations of the composite action of parameters that mediate oxygen metabolism. A logic of this type permits the realistic common-scale modeling of multiple causes of carcinogenesis and shifts the risk-assessment logic to considerations of ?what dose does?? in contrast to the current process of the substance-specific question of ?what dose is?? Whether reactive oxygen is the proximate or contributing cause of disease or simply a better estimate of biologically effective dose, it has enormous advantages for improved risk- and policy-based decisions. Various estimates of immune system modulation will be given based on radiobiology.

  16. A Study of Multiplicities in Hadronic Interactions

    SciTech Connect (OSTI)

    Estrada Tristan, Nora Patricia; /San Luis Potosi U.

    2006-02-01T23:59:59.000Z

    Using data from the SELEX (Fermilab E781) experiment obtained with a minimum-bias trigger, we study multiplicity and angular distributions of secondary particles produced in interactions in the experimental targets. We observe interactions of {Sigma}{sup -}, proton, {pi}{sup -}, and {pi}{sup +}, at beam momenta between 250 GeV/c and 650 GeV/c, in copper, polyethylene, graphite, and beryllium targets. We show that the multiplicity and angular distributions for meson and baryon beams at the same momentum are identical. We also show that the mean multiplicity increases with beam momentum, and presents only small variations with the target material.

  17. A Multiple Network Approach to Corporate Governance

    E-Print Network [OSTI]

    Bonacina, Fausto; Moretto, Enrico; Stefani, Silvana; Torriero, Anna

    2014-01-01T23:59:59.000Z

    In this work, we consider Corporate Governance ties among companies from a multiple network perspective. Such a structurenaturally arises from the close interrelation between the Shareholding Network and the Board of Directors network. Inorder to capture the simultaneous effects on both networks on Corporate Governance, we propose to model the Corporate Governance multiple network structure via tensor analysis. In particular, we consider the TOPHITS model, based on the PARAFAC tensor decomposition, to show that tensor techniques can be successfully applied in this context. After providing some empirical results from the Italian financial market in the univariate case, we will show that a tensor-based multiple network approach can reveal important information.

  18. Acoustic signal estimation using multiple blind observations

    E-Print Network [OSTI]

    Lee, Joonsung

    2006-01-01T23:59:59.000Z

    This thesis proposes two algorithms for recovering an acoustic signal from multiple blind measurements made by sensors (microphones) over an acoustic channel. Unlike other algorithms that use a posteriori probabilistic ...

  19. Multiple microprocessor systems: what, why, and when

    SciTech Connect (OSTI)

    Fathi, E.T.; Krieger, M.

    1983-03-01T23:59:59.000Z

    For many applications-especially those requiring diversified computations in real time or high reliability without massive redundancy-multiple micons-especially those requiring diversified computations in real time or high reliability without massive redundancy-multiple microprocessor systems are the logical choice. Multiple microprocessor systems can provide an appropriate solution to the demand for additional computing power to meet new requirements and to support complex applications. To clarify the concept and its associated terminology, this article considers the what, why, and when of multiple microprocessor systems. Aspects that apply to all processors, regardless of size, are presented in general terms. However, since the main interest lies with microprocessor-based systems, aspects that depend on processor power and input/output flexibility are related specifically to microprocessors. 38 references.

  20. The MARVEL assembly for neutron multiplication

    SciTech Connect (OSTI)

    David L. Chichester; Mathew T. Kinlaw

    2013-10-01T23:59:59.000Z

    A new multiplying test assembly is under development at Idaho National Laboratory to support research, validation, evaluation, and learning. The item is comprised of three stacked, highly-enriched uranium (HEU) cylinders, each 11.4 cm in diameter and having a combined height of up to 11.7 cm. The combined mass of all three cylinders is 20.3 kg of HEU. Calculations for the bare configuration of the assembly indicate a multiplication level of >3.5 (keff=0.72). Reflected configurations of the assembly, using either polyethylene or tungsten, are possible and have the capability of raising the assembly's multiplication level to greater than 10. This paper describes simulations performed to assess the assembly's multiplication level under different conditions and describes the resources available at INL to support the use of these materials. We also describe some preliminary calculations and test activities using the assembly to study neutron multiplication.

  1. An improved model for multiple effect distillation

    E-Print Network [OSTI]

    Mistry, Karan H.

    Increasing global demand for fresh water is driving research and development of advanced desalination technologies. As a result, a detailed model of multiple effect distillation (MED) is developed that is flexible, simple ...

  2. The multiple vortex nature of tropical cyclogenesis

    E-Print Network [OSTI]

    Sippel, Jason Allen

    2005-02-17T23:59:59.000Z

    cells and vortices are the respective source of PV production and building blocks for the meso-?-scale vortices. Finally, this thesis discusses issues related to the multiple vortex nature of tropical cyclone formation. For instance, the tracking...

  3. Galois representations with quaternion multiplication associated to ...

    E-Print Network [OSTI]

    A.O.L. Atkin; Wen-Ching Winnie Li; Tong Liu; Ling Long

    2013-09-18T23:59:59.000Z

    Aug 19, 2013 ... 1 ? ?, each of multiplicity d, and all eigenvalues of the characteristic polynomial of a geometric ... When d = 1, by appealing to the now established Serre's conjecture, one concludes ...... MR2368983 (2009a:11102). [ASD71].

  4. Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs

    E-Print Network [OSTI]

    Venditti, David A.

    Anisotropic grid–adaptive strategies are presented for viscous flow simulations in which the accurate prediction of multiple aerodynamic outputs (such as the lift, drag, and moment coefficients) is required from a single ...

  5. Surrogate Guderley Test Problem Definition

    SciTech Connect (OSTI)

    Ramsey, Scott D. [Los Alamos National Laboratory; Shashkov, Mikhail J. [Los Alamos National Laboratory

    2012-07-06T23:59:59.000Z

    The surrogate Guderley problem (SGP) is a 'spherical shock tube' (or 'spherical driven implosion') designed to ease the notoriously subtle initialization of the true Guderley problem, while still maintaining a high degree of fidelity. In this problem (similar to the Guderley problem), an infinitely strong shock wave forms and converges in one-dimensional (1D) cylindrical or spherical symmetry through a polytropic gas with arbitrary adiabatic index {gamma}, uniform density {rho}{sub 0}, zero velocity, and negligible pre-shock pressure and specific internal energy (SIE). This shock proceeds to focus on the point or axis of symmetry at r = 0 (resulting in ostensibly infinite pressure, velocity, etc.) and reflect back out into the incoming perturbed gas.

  6. Mathematical Problems of Thermoacoustic Tomography 

    E-Print Network [OSTI]

    Nguyen, Linh V.

    2010-10-12T23:59:59.000Z

    Thermoacoustic tomography (TAT) is a newly emerging modality in biomedical imaging. It combines the good contrast of electromagnetic and good resolution of ultrasound imaging. The mathematical model of TAT is the observability problem for the wave...

  7. SOME COMPUTATIONAL PROBLEMS IN MICROFLUIDICS.

    E-Print Network [OSTI]

    Colin, Thierry

    SOME COMPUTATIONAL PROBLEMS IN MICROFLUIDICS. S. Tancogne, Ch.-H. Bruneau, Th. Colin Institut de is to present some results of flow simulations in microflu- idics. Microfluidics is characterized

  8. Industrial Mathematics and Inverse Problems

    E-Print Network [OSTI]

    Fulmek, Markus

    #12;The Industrial Mathematics Structure in Linz 5 #12;The Blast Furnace Process 6 #12;Aims": Looking for causes of an observed or desired effect! A.Tikhonov ( 1936), geophysical problems. F

  9. BILEVEL OPTIMIZATION PROBLEMS WITH VECTORVALUED ...

    E-Print Network [OSTI]

    2012-05-21T23:59:59.000Z

    Page 1 ... been topic of a large number of articles, see the bibliography [8], and of at least two monographs [2, 7]. If the optimal solution of the problem (1.1) is not ...

  10. Multiple phase estimation for arbitrary pure states under white noise

    E-Print Network [OSTI]

    Yao Yao; Li Ge; Xing Xiao; Xiaoguang Wang; C. P. Sun

    2014-09-08T23:59:59.000Z

    In any realistic quantum metrology scenarios, the ultimate precision in the estimation of parameters is limited not only by the so-called Heisenberg scaling, but also the environmental noise encountered by the underlying system. In the context of quantum estimation theory, it is of great significance to carefully evaluate the impact of a specific type of noise on the corresponding quantum Fisher information (QFI) or quantum Fisher information matrix (QFIM). Here we investigate the multiple phase estimation problem for a natural parametrization of arbitrary pure states under white noise. We obtain the explicit expression of the symmetric logarithmic derivative (SLD) and hence the analytical formula of QFIM. Moreover, the attainability of the quantum Cram\\'{e}r-Rao bound (QCRB) is confirmed by the commutability of SLDs and the optimal estimators are elucidated for the experimental purpose. These findings generalize previously known partial results and highlight the role of white noise in quantum metrology.

  11. Manifold Integration: Data Integration on Multiple Manifolds

    E-Print Network [OSTI]

    Choi, Hee Youl

    2011-08-08T23:59:59.000Z

    MANIFOLD INTEGRATION: DATA INTEGRATION ON MULTIPLE MANIFOLDS A Dissertation by HEE YOUL CHOI Submitted to the O?ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree of DOCTOR OF PHILOSOPHY... May 2010 Major Subject: Computer Science MANIFOLD INTEGRATION: DATA INTEGRATION ON MULTIPLE MANIFOLDS A Dissertation by HEE YOUL CHOI Submitted to the O?ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements...

  12. Galois Groups of Schubert Problems

    E-Print Network [OSTI]

    Martin Del Campo Sanchez, Abraham

    2012-10-19T23:59:59.000Z

    GALOIS GROUPS OF SCHUBERT PROBLEMS A Dissertation by ABRAHAM MARTIN DEL CAMPO SANCHEZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY... August 2012 Major Subject: Mathematics GALOIS GROUPS OF SCHUBERT PROBLEMS A Dissertation by ABRAHAM MARTIN DEL CAMPO SANCHEZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

  13. Project Profile: CSP Energy Storage Solutions - Multiple Technologies...

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

    Energy Storage Solutions - Multiple Technologies Compared Project Profile: CSP Energy Storage Solutions - Multiple Technologies Compared US Solar Holdings logo US Solar Holdings,...

  14. Hydrogen Bonded Arrays: The Power of Multiple Hydrogen Bonds...

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

    Bonded Arrays: The Power of Multiple Hydrogen Bonds. Hydrogen Bonded Arrays: The Power of Multiple Hydrogen Bonds. Abstract: Hydrogen bond interactions in small covalent model...

  15. In Situ Live Cell Sensing of Multiple Nucleotides Exploiting...

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

    In Situ Live Cell Sensing of Multiple Nucleotides Exploiting DNARNA Aptamers and Graphene Oxide Nanosheets. In Situ Live Cell Sensing of Multiple Nucleotides Exploiting DNARNA...

  16. AltaRock Energy Announces Successful Multiple-Zone Stimulation...

    Office of Environmental Management (EM)

    Announces Successful Multiple-Zone Stimulation of Well at the Newberry Enhanced Geothermal Systems Demonstration AltaRock Energy Announces Successful Multiple-Zone Stimulation...

  17. SciTech Connect: Matrix multiplication operations with datapre...

    Office of Scientific and Technical Information (OSTI)

    Matrix multiplication operations with data pre-conditioning in a high performance computing architecture Citation Details In-Document Search Title: Matrix multiplication operations...

  18. accurate multiple locus: Topics by E-print Network

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

    severe economic losses in the main apple producing areas of East Asia. The causal Biggs, Alan R. 8 Accurate Matrix Multiplication with Multiple Floating-point Numbers...

  19. Covalency in Metal-Oxygen Multiple Bonds Evaluated Using Oxygen...

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

    Multiple Bonds Evaluated Using Oxygen K-edge Spectroscopy and Electronic Structure Theory . Covalency in Metal-Oxygen Multiple Bonds Evaluated Using Oxygen K-edge Spectroscopy...

  20. Markov Modeling of Cooperative Multiplayer Coupon Collectors' Problems

    E-Print Network [OSTI]

    Rovatti, R; Mazzini, G

    2009-01-01T23:59:59.000Z

    The paper introduces a modified version of the classical Coupon Collector's Problem entailing exchanges and cooperation between multiple players. Results of the development show that, within a proper Markov framework, the complexity of the Cooperative Multiplayer Coupon Collectors' Problem can be attacked with an eye to the modeling of resource harvesting and sharing within the context of Next Generation Network. The cost of cooperation is computed in terms of exchange protocol burden and found to be dependent on only ensemble parameters such as the number of players and the number of coupons but not on the detailed collection statistics. The benefits of cooperation are quantified in terms of reduction of the average number of actions before collection completion.

  1. Problem

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

    more secure electricity for customers and will reduce our nation's dependence on fossil fuels. Many energy technologies, particularly renewables, generate direct current (DC)...

  2. Problem

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

    that could benefit from this coating process include high-definition flat panel displays, sensor coatings for both biological and chemical sensors, and low-k materials for next...

  3. Problem

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

    and offset the benefits. Australia has met its water supply demand with freshwater dams and water catchments in the past, but has been unable to do so in the last decade due...

  4. Problem

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

    phosphorus oxynitride (LiPON) electrolyte and is charged by an energy harvesting PV device. Originally funded by Defense Advanced Research Projects Agency, the device...

  5. Problem

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

    solutions, Sandia and Princeton Power Systems have teamed up to develop the Demand Response Inverter (DRI). Innovative Edge The DRI is a power flow control system that...

  6. Problem

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

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

  7. Problem

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical News, informationPriority FirmTech Transfer Success

  8. Problem

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70 Hg Mercury 35 Br BromineProbing the Proton's Weak SideTech

  9. Problem

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70 Hg Mercury 35 Br BromineProbing the Proton's Weak

  10. Solving the Tulsa ozone problem

    SciTech Connect (OSTI)

    Wagner, K.K. [Atmospheric Information Systems, Norman, OK (United States); Wilson, J.D. [Wilson Consulting Group, Tulsa, OK (United States); Gibeau, E. [Aeromet Inc., Tulsa, OK (United States)

    1998-12-31T23:59:59.000Z

    Local governments and interested parties in Tulsa, Oklahoma are planning actions to keep Tulsa in compliance with the ozone ambient air quality standard. Based on recent data Tulsa exceeds the new eight hour average national ambient air quality standard for ozone and occasionally exceeds the previous one hour standard. Currently, Tulsa is in attainment of the former one-hour ozone standard. The first planning step is to integrate the existing information about Tulsa`s ozone problem. Prior studies of Tulsa ozone are reviewed. Tulsa`s recent air quality and meteorological monitoring are evaluated. Emission inventory estimates are assessed. Factors identified with Tulsa`s ozone problem are the transport of ozone and precursor gases, a possible role for biogenic emissions, and a simplistic ozone forecasting method. The integration of information found that current air quality and meteorological monitoring is meager. Observations of volatile organic compounds and NO{sub y} are absent. Prior intensive studies in 1977 and 1985 are more than ten years old and lack relevance to today`s problem. Emission inventory estimates are scarce and uncertain. The current knowledge base was judged inadequate to properly characterize the present ozone problem. Actions are recommended to enlarge the information base to address Tulsa`s ozone problem.

  11. Gas-surface scattering with multiple collisions in the physisorption potential well Guoqing Fan and J. R. Manson

    E-Print Network [OSTI]

    Manson, Joseph R.

    Gas-surface scattering with multiple collisions in the physisorption potential well Guoqing Fan The problem of gas-surface collisions is developed in terms of a theoretical formalism that allows calcula gas distributions are considered, a monoenergetic incident beam and an equilibrium gas appropriate

  12. Convergence Estimates of Multilevel Additive and Multiplicative ...

    E-Print Network [OSTI]

    2005-04-06T23:59:59.000Z

    Dec 7, 1993 ... P. Grisvard. Elliptic Problems in Nonsmooth Domains. Pitman, Boston, 1985. J. Mandel. Multigrid convergence for non-symmetric and indefinite ...

  13. The dynamic sphere test problem

    SciTech Connect (OSTI)

    Chabaud, Brandon M. [Los Alamos National Laboratory; Brock, Jerry S. [Los Alamos National Laboratory; Smith, Brandon M. [Los Alamos National Laboratory

    2012-05-16T23:59:59.000Z

    In this manuscript we define the dynamic sphere problem as a spherical shell composed of a homogeneous, linearly elastic material. The material exhibits either isotropic or transverse isotropic symmetry. When the problem is formulated in material coordinates, the balance of mass equation is satisfied automatically. Also, the material is assumed to be kept at constant temperature, so the only relevant equation is the equation of motion. The shell has inner radius r{sub i} and outer radius r{sub o}. Initially, the shell is at rest. We assume that the interior of the shell is a void and we apply a time-varying radial stress on the outer surface.

  14. Enhancing video transmission in MANETs utilizing multiple interfaces and multiple channels per node

    E-Print Network [OSTI]

    Bouras, Christos

    . Simulation results indicate that the mechanism improves the networks capacity for video transmissionEnhancing video transmission in MANETs utilizing multiple interfaces and multiple channels per node}@cti.gr, gkamas@aeavellas.gr {politaki, tsanai}@ceid.upatras.gr Abstract. Mobile Ad hoc NETworks (MANETs

  15. A combined isotropic and multiple s-shell anisotropic scaling method for multiple data sets

    E-Print Network [OSTI]

    Takusagawa, Fusao

    1992-01-01T23:59:59.000Z

    by combining an isotropic scaling function, K(s) = A exp (Bs2), and a multiple s-shell anisotropic scaling function, K(x)s = ([Sigma] [Sigma] cijxij)s. This combined scaling function can greatly reduce the systematic differences in intensities among multiple...

  16. Multiple-Objective Metric for Placing Multiple Base Stations in Wireless Sensor Networks

    E-Print Network [OSTI]

    Liblit, Ben

    positioning in sensor networks based on directional antennas [6], but it addresses secure positioningMultiple-Objective Metric for Placing Multiple Base Stations in Wireless Sensor Networks Soo Kim in wireless sensor networks. First, the ratio of sensor nodes which can communicate with a base station via

  17. ITERATIVE METHODS FOR NEUTRON TRANSPORT EIGENVALUE PROBLEMS

    E-Print Network [OSTI]

    Graham, Ivan

    Abstract. We discuss iterative methods for computing criticality in nuclear reactors. In general as the inner solver. Key words. neutron transport, criticality, generalised eigenvalue problem, symmetry. Reactor criticality problems. Climate change is a challenging problem of great contemporary interest

  18. Chromatograph applications & problems from a user`s standpoint

    SciTech Connect (OSTI)

    Neefe, D.A.; Bertini, J.L. [Tenneco Gas, Hockley, TX (United States)

    1995-12-01T23:59:59.000Z

    The chromatograph is becoming more important to the pipeline industry due to the demand for {open_quotes}Real Time{close_quotes} volumes. To obtain volumes which do not need to be corrected for gas properties, it is necessary to have the gas properties such as specific gravity, carbon dioxide, nitrogen, and btu values within the flow computer`s operating parameters. When these values are used within each flow calculation cycle, the accuracy of the measurement obtained is much greater than when corrections for supercompressibility are applied after the volume is accumulated. When an on-line analyzer is used, and the flow calculations use real time gas properties, it is important that the chromatograph be as accurate as possible. Some pipeline companies use chromatograph zones, which allow one chromatograph to provide data for multiple flow computers. This dictates that the chromatograph be as accurate as possible, since any error would cause corrections to be applied to multiple meter station volumes. A chromatograph usually appears to be a very complicated device, however with proper training and maintenance procedures the chromatograph will provide many years of accurate data. A basic description of installation procedures, potential chromatograph problems, and basic operating procedures will be presented. This will hopefully provide the operator with a more complete knowledge of possible problems and allow proper installation, maintenance and operations.

  19. Charged-particle multiplicity at LHC energies

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    The talk presents the measurement of the pseudorapidity density and the multiplicity distribution with ALICE at the achieved LHC energies of 0.9 and 2.36 TeV.An overview about multiplicity measurements prior to LHC is given and the related theoretical concepts are briefly discussed.The analysis procedure is presented and the systematic uncertainties are detailed. The applied acceptance corrections and the treatment of diffraction are discussed.The results are compared with model predictions. The validity of KNO scaling in restricted phase space regions is revisited. 

  20. Active neutron multiplicity counting of bulk uranium

    SciTech Connect (OSTI)

    Ensslin, N.; Krick, M.S.; Langner, D.G.; Miller, M.C.

    1991-01-01T23:59:59.000Z

    This paper describes a new nondestructive assay technique being developed to assay bulk uranium containing kilogram quantities of {sup 235}U. The new technique uses neutron multiplicity analysis of data collected with a coincidence counter outfitted with AmLi neutron sources. We have calculated the expected neutron multiplicity count rate and assay precision for this technique and will report on its expected performance as a function of detector design characteristics, {sup 235 }U sample mass, AmLi source strength, and source-to-sample coupling. 11 refs., 2 figs., 2 tabs.

  1. Hand-held multiple system gas chromatograph

    DOE Patents [OSTI]

    Yu, Conrad M. (Antioch, CA)

    2001-01-01T23:59:59.000Z

    A multiple parallel hand-held gas chromatograph (GC) system which includes several independent GCs. Each independent GC has its own injector, separation column, detector and oven and the GCs are mounted in a light weight hand-held assembly. Each GC operates independently and simultaneously. Because of different coatings in different separation columns, different retention times for the same gas will be measured. Thus, for a GC system with multiple parallel GCs, the system can measure, in a short period, different retention times and provide a cross-reference in the determination of the measured gas and to become a two-dimensional system for direct field use.

  2. Laser isotope separation by multiple photon absorption

    DOE Patents [OSTI]

    Robinson, C. Paul (Los Alamos, NM); Rockwood, Stephen D. (Los Alamos, NM); Jensen, Reed J. (Los Alamos, NM); Lyman, John L. (Los Alamos, NM); Aldridge, III, Jack P. (Los Alamos, NM)

    1987-01-01T23:59:59.000Z

    Multiple photon absorption from an intense beam of infrared laser light may be used to induce selective chemical reactions in molecular species which result in isotope separation or enrichment. The molecular species must have a sufficient density of vibrational states in its vibrational manifold that, is the presence of sufficiently intense infrared laser light tuned to selectively excite only those molecules containing a particular isotope, multiple photon absorption can occur. By this technique, for example, intense CO.sub.2 laser light may be used to highly enrich .sup.34 S in natural SF.sub.6 and .sup.11 B in natural BCl.sub.3.

  3. Laser isotope separation by multiple photon absorption

    DOE Patents [OSTI]

    Robinson, C.P.; Rockwood, S.D.; Jensen, R.J.; Lyman, J.L.; Aldridge, J.P. III.

    1987-04-07T23:59:59.000Z

    Multiple photon absorption from an intense beam of infrared laser light may be used to induce selective chemical reactions in molecular species which result in isotope separation or enrichment. The molecular species must have a sufficient density of vibrational states in its vibrational manifold that, is the presence of sufficiently intense infrared laser light tuned to selectively excite only those molecules containing a particular isotope, multiple photon absorption can occur. By this technique, for example, intense CO[sub 2] laser light may be used to highly enrich [sup 34]S in natural SF[sub 6] and [sup 11]B in natural BCl[sub 3]. 8 figs.

  4. Problem Set 3 Let's Simplex

    E-Print Network [OSTI]

    Chen, Yiling

    Problem Set 3 Let's Simplex Applied Mathematics 121 -- Spring 2011 Due 5:00 PM, Friday, February 18 linear programs using the Simplex method. Second, you will get a better understanding of linear programming through a better understanding of the Simplex method. Contents 1 Making it rain 2 2 Simplex

  5. Problem Set 3 Let's Simplex

    E-Print Network [OSTI]

    Chen, Yiling

    Problem Set 3 Let's Simplex AM121/ES121 -- Fall 2014 Due 5:00 PM, Tuesday, September 30, 2014 linear programs using the Simplex method. Second, you will get a better understanding of linear programming through a better understanding of the Simplex method. Contents 1 Making it rain 3 2 Simplex

  6. Problem Set 3 Let's Simplex

    E-Print Network [OSTI]

    Chen, Yiling

    Problem Set 3 Let's Simplex Applied Mathematics 121 -- Spring 2014 Due 5:00 PM, Friday, February 21 practice solving linear programs using the Simplex method. Second, you will get a better understanding of linear programming through a better understanding of the Simplex method. Contents 1 Making it rain 3 2

  7. Problems in unification and supergravity

    SciTech Connect (OSTI)

    Farrar, G.; Henyey, F. (eds.)

    1984-01-01T23:59:59.000Z

    Problems in unification of the various gauge groups, quantum gravity, supersymmetry and supergravity, compact dimensions of space-time, and conditions at the beginning of the universe are discussed. Separate entries were prepared for the data base for the 15 papers presented. (WHK)

  8. Sour landfill gas problem solved

    SciTech Connect (OSTI)

    Nagl, G.; Cantrall, R. [Wheelabrator Clean Air Systems, Inc., Schaumburg, IL (United States)

    1996-05-01T23:59:59.000Z

    In Broward County, Fla., near Pompano Beach, Waste Management of North America (WMNA, a subsidiary of WMX Technologies, Oak Brook, IL) operates the Central Sanitary Landfill and Recycling Center, which includes the country`s largest landfill gas-to-energy plant. The landfill consists of three collection sites: one site is closed, one is currently receiving garbage, and one will open in the future. Approximately 9 million standard cubic feet (scf) per day of landfill gas is collected from approximately 300 wells spread over the 250-acre landfill. With a dramatic increase of sulfur-containing waste coming to a South Florida landfill following Hurricane Andrew, odors related to hydrogen sulfide became a serious problem. However, in a matter of weeks, an innovative desulfurization unit helped calm the landfill operator`s fears. These very high H{sub 2}S concentrations caused severe odor problems in the surrounding residential area, corrosion problems in the compressors, and sulfur dioxide (SO{sub 2}) emission problems in the exhaust gas from the turbine generators.

  9. MATRIXDEPENDENT MULTIGRIDHOMOGENIZATION FOR DIFFUSION PROBLEMS

    E-Print Network [OSTI]

    ­dependent prolongations and the construction of coarse grid operators by means of the Galerkin approximation. In numerical on a micro­scale level, require that all length scales appearing in the problem are completely resolved. In numerical simulation however, due to reasons of storage requirements and numerical complexity

  10. Air PSE (Problem Solving Environment)

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    PSE - 1 Air PSE (Problem Solving Environment) MODELLING OF AIR POLLUTION IN THE LOS ANGELES BASIN WITH AIR PSE Developed by Prof. Donald Dabdub Computational Environmental Sciences Laboratory Mechanical COMPUTER MODELS An air pollution model is a computer program that computes how the different chemical

  11. Monte Carlo photon benchmark problems

    SciTech Connect (OSTI)

    Whalen, D.J.; Hollowell, D.E.; Hendricks, J.S.

    1991-01-01T23:59:59.000Z

    Photon benchmark calculations have been performed to validate the MCNP Monte Carlo computer code. These are compared to both the COG Monte Carlo computer code and either experimental or analytic results. The calculated solutions indicate that the Monte Carlo method, and MCNP and COG in particular, can accurately model a wide range of physical problems.

  12. Substation automation problems and possibilities

    SciTech Connect (OSTI)

    Smith, H.L.

    1996-10-01T23:59:59.000Z

    The evolutionary growth in the use and application of microprocessors in substations has brought the industry to the point of considering integrated substation protection, control, and monitoring systems. An integrated system holds the promise of greatly reducing the design, documentation, and implementation cost for the substation control, protection, and monitoring systems. This article examines the technical development path and the present implementation problems.

  13. RESEARCH Open Access Impaired multiple object tracking in children with

    E-Print Network [OSTI]

    Nguyen, Danh

    demands related to monitoring multiple targets reflecting a reduced acuity in spatiotemporal cognitive

  14. Relaxations and discretizations for the pooling problem

    E-Print Network [OSTI]

    Akshay Gupte

    2015-04-28T23:59:59.000Z

    Apr 28, 2015 ... Abstract: The pooling problem is a folklore NP-hard global optimization problem that finds appli- cations in industries such as petrochemical ...

  15. photo copy of assignment 1 problems

    E-Print Network [OSTI]

    The problems listed below, and in Exercise 9, are from a Russian Grade 3 textbook.6 Solve the problems and compare their conditions and solutions. a.

  16. Test instances for the traffic assignment problem

    E-Print Network [OSTI]

    2008-01-08T23:59:59.000Z

    Jan 8, 2008 ... mation on test problems previously used in the literature to facilitate benchmarking. Keywords. Traffic assignment problem, BPR function, ...

  17. Asymptotic analysis of an optimal location problem

    E-Print Network [OSTI]

    2003-05-13T23:59:59.000Z

    Asymptotic analysis of an optimal location problem. One considers the problem of optimal location of masses(say production centers) in order to approximate a ...

  18. Computer Simulations Reveal Multiple Functions for Aromatic

    E-Print Network [OSTI]

    Computer Simulations Reveal Multiple Functions for Aromatic Residues in Cellulase Enzymes NREL researchers use high-performance computing to demonstrate fundamental roles of aromatic residues in cellulase enzyme tunnels. National Renewable Energy Laboratory (NREL) computer simulations of a key indus- trial

  19. Multibrowsing: Moving Web Content across Multiple Displays

    E-Print Network [OSTI]

    Stanford University

    is a framework for exploiting multiple heterogeneous displays, whether fixed or on mobile computing devices displays in a ubiquitous computing environment. The dis- plays may be "public" (e.g. wall-sized fixed for multi- display environments. Since it uses Web standards, it accommodates any device or platform already

  20. BLEI'S INEQUALITY AND COORDINATEWISE MULTIPLE SUMMING OPERATORS

    E-Print Network [OSTI]

    Sinnamon, Gordon J.

    BLEI'S INEQUALITY AND COORDINATEWISE MULTIPLE SUMMING OPERATORS DUMITRU POPA AND GORD SINNAMON are proved. When specialized to single-function inequalities they include a pair of inequalities due to Blei and a recent extension of Blei's inequality. The first of these inequalities is applied to give explicit

  1. Multiple Sclerosis Luminance Threshold and Measurements

    E-Print Network [OSTI]

    Foster, David H.

    Multiple Sclerosis Luminance Threshold and Measurements of Temporal Characteristics of Vision Definite MS + 6/9 - + + 7/50/F Recurrent ON + 6/6 + - + 8/47/F Definite MS + 6/6 + + + · Luminance to te t the temporal properties of vi Ion were equalized with respect to Individual luminance thresh

  2. Semiconductor laser with multiple lasing wavelengths

    DOE Patents [OSTI]

    Fischer, Arthur J.; Choquette, Kent D.; Chow, Weng W.

    2003-07-29T23:59:59.000Z

    A new class of multi-terminal vertical-cavity semiconductor laser components has been developed. These multi-terminal laser components can be switched, either electrically or optically, between distinct lasing wavelengths, or can be made to lase simultaneously at multiple wavelengths.

  3. Quasi Multiplication and K-groups

    E-Print Network [OSTI]

    Lee, Tsiu-Kwen; Sheu, Albert Jeu-Liang

    2013-02-28T23:59:59.000Z

    We give a negative answer to the question raised by Mart Abel about whether his proposed definition of K0 and K1 groups in terms of quasi multiplication is indeed equivalent to the established ones in algebraic K-theory....

  4. Steady water waves with multiple critical layers

    E-Print Network [OSTI]

    Mats Ehrnström; Joachim Escher; Erik Wahlén

    2011-04-01T23:59:59.000Z

    We construct small-amplitude periodic water waves with multiple critical layers. In addition to waves with arbitrarily many critical layers and a single crest in each period, two-dimensional sets of waves with several crests and troughs in each period are found. The setting is that of steady two-dimensional finite-depth gravity water waves with vorticity.

  5. Jitter Regulation for Multiple Streams (Extended Abstract)

    E-Print Network [OSTI]

    Hay, David

    Jitter Regulation for Multiple Streams (Extended Abstract) David Hay and Gabriel Scalosub Computer as possible; the smoothness of a traffic is typically captured by its delay jitter, i.e., the difference between the maximal and minimal end-to-end delays. The task of minimizing the jitter is done by jitter

  6. Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs

    E-Print Network [OSTI]

    Peraire, Jaime

    Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs David A. Venditti and David L Anisotropic grid­adaptive strategies are presented for viscous flow simulations in which the accurate estimation and Hessian-based anisotropic grid adaptation. Airfoil test cases are presented to demonstrate

  7. Liquid measurement - Techniques and problems

    SciTech Connect (OSTI)

    Caffey, B.R.

    1984-04-01T23:59:59.000Z

    This paper reviews a few liquid measurement techniques and their associated problems. In measuring liquid petroleum gas, the first obstacle to overcome is accomodating some form of volumetric measurement. This is usually accomplished by orifice, positive displacement, or turbine meters. Each of the three established methods is covered extensively by industry standards in the API Manual of Petroleum Standards. If the operator follows these standards, very accurate results can be achieved.

  8. Beamer graphics problem solved Abhijit Champanerkar

    E-Print Network [OSTI]

    Champanerkar, Abhijit

    Beamer graphics problem solved Abhijit Champanerkar College of Staten Island, CUNY January 15, 2009 Abhijit Champanerkar (CSI, CUNY) Beamer graphics problem solved #12;I wanted to get the following and not on a Mac :( Abhijit Champanerkar (CSI, CUNY) Beamer graphics problem solved #12;Graphics Problem: Figure

  9. Multiple-shocks induced nanocrystallization in iron

    SciTech Connect (OSTI)

    Matsuda, Tomoki; Hirose, Akio [Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871 (Japan); Sano, Tomokazu [Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871 (Japan); JST, CREST, Suita, Osaka 565-0871 (Japan); Arakawa, Kazuto [JST, CREST, Suita, Osaka 565-0871 (Japan); Department of Material Science, Interdisciplinary Faculty of Science and Engineering, Shimane University, Matsue, Shimane 690-8504 (Japan)

    2014-07-14T23:59:59.000Z

    We found that multiple shots of femtosecond laser-driven shock pulses changed coarse crystalline iron grains with a size of 140??m into nanocrystals with a high density of dislocations, which had never been observed in conventional shock processes. We performed metallurgical microstructure observations using transmission electron microscopy (TEM) and hardness measurements using nanoindentation on cross-sections of shocked iron. TEM images showed that grains with sizes from 10?nm through 1??m exist within 2??m of the surface, where the dislocation density reached 2?×?10{sup 15?}m{sup ?2}. Results of the hardness measurements showed a significant increase in hardness in the nanocrystallized region. We suggest that the formation of a high density of dislocations, which is produced by a single shock, induces local three-dimensional pile-up by the multiple-shocks, which causes grain refinement at the nanoscale.

  10. Intravalley Multiple Scattering of Quasiparticles in Graphene

    E-Print Network [OSTI]

    J. Y. Vaishnav; Justin Q. Anderson; Jamie D. Walls

    2011-05-28T23:59:59.000Z

    We develop a theoretical description of intravalley scattering of quasiparticles in graphene from multiple short-range scatterers of size much greater than the carbon-carbon bond length. Our theory provides a method to rapidly calculate the Green's function in graphene for arbitrary configurations of scatterers. We demonstrate that non-collinear multiple scattering trajectories generate pseudospin rotations that alter quasiparticle interference, resulting in significant modifications to the shape, intensity, and pattern of the interference fringes in the local density of states (LDOS). We illustrate these effects via theoretical calculations of the LDOS for a variety of scattering configurations in single layer graphene. A clear understanding of impurity scattering in graphene is a step towards exploiting graphene's unique properties to build future devices.

  11. Experience with pipelined multiple instruction streams

    SciTech Connect (OSTI)

    Jordon, H.F.

    1984-01-01T23:59:59.000Z

    Pipelining has been used to implement efficient, high-speed vector computers. It is also an effective method for implementing multiprocessors. The Heterogeneous Element Processor (HEP) built by Denelcor Incorporated is the first commercially available computer system to use pipelining to implement multiple processes. This paper introduces the architecture and programming environment of the HEP and surveys a range of scientific applications programs for which parallel versions have been produced, tested, and analyzed on this computer. In all cases, the ideal of one instruction completion every pipeline step time is closely approached. Speed limitations in the parallel programs are more often a result of the extra code necessary to ensure synchronization than of actual synchronization lockout at execution time. The pipelined multiple instruction stream architecture is shown to cover a wide range of applications with good utilization of the parallel hardware.

  12. Multiple Scattering Measurements in the MICE Experiment

    SciTech Connect (OSTI)

    Carlisle, T.; Cobb, J.; /Oxford U.; Neuffer, D.; /Fermilab

    2012-05-01T23:59:59.000Z

    The international Muon Ionization Cooling Experiment (MICE), under construction at RAL, will test a prototype cooling channel for a future Neutrino Factory or Muon Collider. The cooling channel aims to achieve, using liquid hydrogen absorbers, a 10% reduction in transverse emittance. The change in 4D emittance will be determined with an accuracy of 1% by measuring muons individually. Step IV of MICE will make the first precise emittance-reduction measurements of the experiment. Simulation studies using G4MICE, based on GEANT4, find a significant difference in multiple scattering in low Z materials, compared with the standard expression quoted by the Particle Data Group. Direct measurement of multiple scattering using the scintillating-fibre trackers is found to be possible, but requires the measurement resolution to be unfolded from the data.

  13. Multiplicity features of adiabatic autothermal reactors

    SciTech Connect (OSTI)

    Lovo, M.; Balakotaiah, V. (Houston Univ., TX (United States). Dept. of Chemical Engineering)

    1992-01-01T23:59:59.000Z

    In this paper singularity theory, large activation energy asymptotic, and numerical methods are used to present a comprehensive study of the steady-state multiplicity features of three classical adiabatic autothermal reactor models: tubular reactor with internal heat exchange, tubular reactor with external heat exchange, and the CSTR with external heat exchange. Specifically, the authors derive the exact uniqueness-multiplicity boundary, determine typical cross-sections of the bifurcation set, and classify the different types of bifurcation diagrams of conversion vs. residence time. Asymptotic (limiting) models are used to determine analytical expressions for the uniqueness boundary and the ignition and extinction points. The analytical results are used to present simple, explicit and accurate expressions defining the boundary of the region of autothermal operation in the physical parameter space.

  14. Evolution of isotopic composition of reprocessed uranium during the multiple recycling in light water reactors with natural uranium feed

    SciTech Connect (OSTI)

    Smirnov, A. Yu., E-mail: a.y.smirnoff@rambler.ru; Sulaberidze, G. A. [National Research Nuclear University MEPhI (Russian Federation); Alekseev, P. N.; Dudnikov, A. A.; Nevinitsa, V. A., E-mail: neva@dhtp.kiae.ru; Proselkov, V. N.; Chibinyaev, A. V. [Russian Research Centre Kurchatov Institute (Russian Federation)

    2012-12-15T23:59:59.000Z

    A complex approach based on the consistent modeling of neutron-physics processes and processes of cascade separation of isotopes is applied for analyzing physical problems of the multiple usage of reprocessed uranium in the fuel cycle of light water reactors. A number of scenarios of multiple recycling of reprocessed uranium in light water reactors are considered. In the process, an excess absorption of neutrons by the {sup 236}U isotope is compensated by re-enrichment in the {sup 235}U isotope. Specific consumptions of natural uranium for re-enrichment of the reprocessed uranium depending on the content of the {sup 232}U isotope are obtained.

  15. Lamp method and apparatus using multiple reflections

    DOE Patents [OSTI]

    MacLennan, D.A.; Turner, B.; Kipling, K.

    1999-05-11T23:59:59.000Z

    A method wherein the light in a sulfur or selenium lamp is reflected through the fill a multiplicity of times to convert ultraviolet radiation to visible is disclosed. A light emitting device comprised of an electrodeless envelope which bears a light reflecting covering around a first portion which does not crack due to differential thermal expansion and which has a second portion which comprises a light transmissive aperture. 20 figs.

  16. Lamp method and apparatus using multiple reflections

    DOE Patents [OSTI]

    MacLennan, Donald A. (Butler, PA); Turner, Brian (Damascus, MD); Kipling, Kent (Gaithersburg, MD)

    1999-01-01T23:59:59.000Z

    A method wherein the light in a sulfur or selenium lamp is reflected through the fill a multiplicity of times to convert ultraviolet radiation to visible. A light emitting device comprised of an electrodeless envelope which bears a light reflecting covering around a first portion which does not crack due to differential thermal expansion and which has a second portion which comprises a light transmissive aperture.

  17. Alternatives for Helium-3 in Multiplicity Counters

    SciTech Connect (OSTI)

    Ely, James H.; Siciliano, Edward R.; Lintereur, Azaree T.; Swinhoe, Martyn T.

    2013-04-01T23:59:59.000Z

    Alternatives to helium-3 are being actively pursued due to the shortage and rising costs of helium-3. For safeguards applications, there are a number of ongoing investigations to find alternatives that provide the same capability in a cost-effective manner. One of the greatest challenges is to find a comparable alternative for multiplicity counters, since they require high efficiency and short collection or die-away times. Work has been progressing on investigating three commercially available alternatives for high efficiency multiplicity counters: boron trifluoride (BF3) filled proportional tubes, boron-lined proportional tubes, and lithium fluoride with zinc sulfide coated light guides. The baseline multiplicity counter used for the investigation is the Epithermal Neutron Multiplicity Counter with 121 helium-3 filled tubes at 10 atmosphere pressure, which is a significant capability to match. The primary tool for the investigation has been modeling and simulation using the Monte Carlo N-Particle eXtended (MCNPX) radiation transport program, with experiments to validate the models. To directly calculate the coincidence rates in boron-lined (and possibly other) detectors, the MCNPX code has been enhanced to allow the existing coincidence tally to be used with energy deposition rather than neutron capture reactions. This allows boron-lined detectors to be modeled more accurately. Variations of tube number and diameter along with variations in the amount of inter-tube moderator have been conducted for the BF3 and boron-lined cases. Tube pressure was investigated for BF3, up to two atmospheres, as well as optimal boron thickness in the boron-lined tubes. The lithium fluoride was modeled as sheets of material with light guides in between, and the number and thickness of the sheets investigated. The amount of light guide, which in this case doubles as a moderator, was also optimized. The results of these modeling and simulation optimization investigations are described and results presented.

  18. A Generalized Coupon Collector Problem

    E-Print Network [OSTI]

    Xu, Weiyu

    2010-01-01T23:59:59.000Z

    This paper provides analysis to a generalized version of the coupon collector problem, in which the collector gets $d$ distinct coupons each run and she chooses the one that she has the least so far. On the asymptotic case when the number of coupons $n$ goes to infinity, we show that on average $\\frac{n\\log n}{d} + \\frac{n}{d}(m-1)\\log\\log{n}+O(mn)$ runs are needed to collect $m$ sets of coupons. An efficient exact algorithm is also developed for any finite case to compute the average needed runs exactly. Numerical examples are provided to verify our theoretical predictions.

  19. Pattern Alteration: Prominent Posture Problems

    E-Print Network [OSTI]

    2006-05-05T23:59:59.000Z

    if the problem is severe. These two techniques can help: you can compare the upper back width and the center back length, lines 5 and 9 of your Personal Measurement Chart, with the corresponding measurements on the pattern; or you can check garments you... to the point where you need the altera- tion (generally approximately 5 inches, or 12.7 cm). Draw a horizontal line across the pattern at a right angle to the lengthwise grainline or the center back. (Note: When measuring, allow for a lowered neckline...

  20. First Passage Problems in Biology

    E-Print Network [OSTI]

    Tom Chou; Maria R. D'Orsogna

    2014-08-20T23:59:59.000Z

    Applications of first passage times in stochastic processes arise across a wide range of length and time scales in biological settings. After an initial technical overview, we survey representative applications and their corresponding models. Within models that are effectively Markovian, we discuss canonical examples of first passage problems spanning applications to molecular dissociation and self-assembly, molecular search, transcription and translation, neuronal spiking, cellular mutation and disease, and organismic evolution and population dynamics. In this last application, a simple model for stem-cell ageing is presented and some results derived. Various approximation methods and the physical and mathematical subtleties that arise in the chosen applications are also discussed.

  1. Mosquito Problems after a Storm

    E-Print Network [OSTI]

    Johnsen, Mark

    2008-08-05T23:59:59.000Z

    ER-042 8-08 Mark M. Johnsen, Texas AgriLife Extension Service, The Texas A&M System After a severe storm, mosquito populations can explode, and the diseases they carry can be a danger to humans. Mosquito problems occur in two distinct waves after.... Louis encephalitis. This mosquito species lays eggs in roadside ditches, storm sew- ers, birdbaths, or any container or depression that holds water. Eggs hatch in 7 days. West Nile virus (WNV) has two distinct clini- cal forms known as West Nile Fever...

  2. Mathematical Problems of Thermoacoustic Tomography

    E-Print Network [OSTI]

    Nguyen, Linh V.

    2010-10-12T23:59:59.000Z

    (y,s) = ?integraldisplay 0 ?R(s,?) ?integraldisplay 0 g(y,r)I(r,?)drd?. The key ingredient in the proof of Theorem A.1 is the following identity, which is equivalent to a range description of operator T (see Remark D.3): Theorem A.4 Suppose that ? is a ball, f ? C?0... . . . . . . . . . . . . . . . . . . . 6 C. Publications and presentations of the results . . . . . . . . 7 II INVERSION FORMULAS . . . . . . . . . . . . . . . . . . . . . 9 A. Introduction to the problem and main results . . . . . . . 9 B. Derivation of Theorem A.1 from Theorem A.4...

  3. Radial velocities of southern visual multiple stars

    SciTech Connect (OSTI)

    Tokovinin, Andrei [Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile); Pribulla, Theodor [Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica (Slovakia); Fischer, Debra, E-mail: atokovinin@ctio.noao.edu, E-mail: pribulla@ta3.sk, E-mail: debra.fischer@gmail.com [Department of Astronomy, Yale University, New Haven, CT 06511 (United States)

    2015-01-01T23:59:59.000Z

    High-resolution spectra of visual multiple stars were taken in 2008–2009 to detect or confirm spectroscopic subsystems and to determine their orbits. Radial velocities of 93 late-type stars belonging to visual multiple systems were measured by numerical cross-correlation. We provide the individual velocities, the width, and the amplitude of the Gaussians that approximate the correlations. The new information on the multiple systems resulting from these data is discussed. We discovered double-lined binaries in HD 41742B, HD 56593C, and HD 122613AB, confirmed several other known subsystems, and constrained the existence of subsystems in some visual binaries where both components turned out to have similar velocities. The orbits of double-lined subsystems with periods of 148 and 13 days are computed for HD 104471 Aa,Ab and HD 210349 Aa,Ab, respectively. We estimate individual magnitudes and masses of the components in these triple systems and update the outer orbit of HD 104471 AB.

  4. MPACT Fast Neutron Multiplicity System Prototype Development

    SciTech Connect (OSTI)

    D.L. Chichester; S.A. Pozzi; J.L. Dolan; M.T. Kinlaw; S.J. Thompson; A.C. Kaplan; M. Flaska; A. Enqvist; J.T. Johnson; S.M. Watson

    2013-09-01T23:59:59.000Z

    This document serves as both an FY2103 End-of-Year and End-of-Project report on efforts that resulted in the design of a prototype fast neutron multiplicity counter leveraged upon the findings of previous project efforts. The prototype design includes 32 liquid scintillator detectors with cubic volumes 7.62 cm in dimension configured into 4 stacked rings of 8 detectors. Detector signal collection for the system is handled with a pair of Struck Innovative Systeme 16-channel digitizers controlled by in-house developed software with built-in multiplicity analysis algorithms. Initial testing and familiarization of the currently obtained prototype components is underway, however full prototype construction is required for further optimization. Monte Carlo models of the prototype system were performed to estimate die-away and efficiency values. Analysis of these models resulted in the development of a software package capable of determining the effects of nearest-neighbor rejection methods for elimination of detector cross talk. A parameter study was performed using previously developed analytical methods for the estimation of assay mass variance for use as a figure-of-merit for system performance. A software package was developed to automate these calculations and ensure accuracy. The results of the parameter study show that the prototype fast neutron multiplicity counter design is very nearly optimized under the restraints of the parameter space.

  5. Constant-mesh, multiple-shaft transmission

    SciTech Connect (OSTI)

    Rea, J.E.; Mills, D.D.; Sewell, J.S.

    1992-04-21T23:59:59.000Z

    This patent describes a multiple-shaft, constant-mesh transmission adapted to establish selectively a reverse torque delivery path and a forward drive torque delivery path and having a torque input means including a torque input shaft, a mainshaft aligned with the input shaft, a countershaft geared to the input shaft in spaced, parallel relationship with respect to the mainshaft, a torque output shaft joined to the mainshaft; multiple mainshaft gear elements journalled on the main airshaft, multiple cluster gear elements carried by the countershaft in meshing engagement with the mainshaft gear elements, one of the cluster gear elements being rotatably journalled on the countershaft; a reverse idle gear, a reverse gear journalled on the countershaft, the reverse idler gear being in constant mesh with the reverse gear and one of the mainshaft gear elements; first clutch means for connecting selectively the reverse gear and the countershaft; second synchronizer clutch means for connecting selectively the one of the mainshaft gear elements to the mainshaft; and third synchronizer clutch means for selectively connecting another of the mainshaft gear elements to the mainshaft; the first clutch means being a double-acting clutch with a first common axially movable clutch element adapted upon movement in one axial direction to drivably connected the reverse gear to the countershaft and adapted upon movement in the opposite axial direction to connect the one cluster gear element to the countershaft.

  6. Metric problems in sub-Riemannian geometry Gromov's dimension approach to the Holder equivalence problem

    E-Print Network [OSTI]

    Pansu, Pierre

    Metric problems in sub-Riemannian geometry Gromov's dimension approach to the H¨older equivalence problem Gromov's cochain approach to the H¨older equivalence problem Rumin's complex Quasisymmetric H¨older-Lipschitz equivalence problem Differential forms and the H¨older equivalence problem P. Pansu September 1st, 2014 P

  7. Unscented Kalman Filters for Multiple Target Tracking with Symmetric Measurement

    E-Print Network [OSTI]

    Lanterman, Aaron

    1 Unscented Kalman Filters for Multiple Target Tracking with Symmetric Measurement Equations measurement equation approach to multiple target tracking is revisited using unscented Kalman and particle measurement equation implementation relying upon an extended Kalman filter. Counterintuitive results

  8. Genetic associations with brain cortical thickness in multiple sclerosis

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    onset of multiple sclerosis. Brain 131, 808–817. Georgala,in multiple sclerosis. Brain 126, Shannon, P. , Markiel,Genes, Brain and Behavior (2015) 14: 217–227 doi:

  9. Breakdown Visualization: Multiple Foci Polyarchies of Values and Attributes

    E-Print Network [OSTI]

    breakdown visualization, financial visualization, polyarchy structure, multiple foci, visual decompositionBreakdown Visualization: Multiple Foci Polyarchies of Values and Attributes Sandeep Prabhakar Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg, VA 24061

  10. Abstract--We propose a partitioning problem in a power system context that weighs the two objectives of minimizing cuts

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    and 118-bus electric power systems. Index Terms--Graph Partitioning, Extreme Events I. INTRODUCTION HIS work is motivated by extreme events in electric power systems that are caused by multiple contingenciesAbstract-- We propose a partitioning problem in a power system context that weighs the two

  11. Robust Hydraulic Fracture Monitoring (HFM) of Multiple Time Overlapping Events Using a Generalized Discrete Radon Transform

    E-Print Network [OSTI]

    Ely, Gregory

    2013-01-01T23:59:59.000Z

    In this work we propose a novel algorithm for multiple-event localization for Hydraulic Fracture Monitoring (HFM) through the exploitation of the sparsity of the observed seismic signal when represented in a basis consisting of space time propagators. We provide explicit construction of these propagators using a forward model for wave propagation which depends non-linearly on the problem parameters - the unknown source location and mechanism of fracture, time and extent of event, and the locations of the receivers. Under fairly general assumptions and an appropriate discretization of these parameters we first build an over-complete dictionary of generalized Radon propagators and assume that the data is well represented as a linear superposition of these propagators. Exploiting this structure we propose sparsity penalized algorithms and workflow for super-resolution extraction of time overlapping multiple seismic events from single well data.

  12. Search for Short Lived Particles in High Multiplicity Environment

    E-Print Network [OSTI]

    Marek Gazdzicki; Waldemar Retyk; Jan Pluta

    1999-04-14T23:59:59.000Z

    A method of statistical selection of short lived particles in high multiplicity nucleus-nucleus collisions is discussed.

  13. Real-time multi-mode neutron multiplicity counter

    DOE Patents [OSTI]

    Rowland, Mark S; Alvarez, Raymond A

    2013-02-26T23:59:59.000Z

    Embodiments are directed to a digital data acquisition method that collects data regarding nuclear fission at high rates and performs real-time preprocessing of large volumes of data into directly useable forms for use in a system that performs non-destructive assaying of nuclear material and assemblies for mass and multiplication of special nuclear material (SNM). Pulses from a multi-detector array are fed in parallel to individual inputs that are tied to individual bits in a digital word. Data is collected by loading a word at the individual bit level in parallel, to reduce the latency associated with current shift-register systems. The word is read at regular intervals, all bits simultaneously, with no manipulation. The word is passed to a number of storage locations for subsequent processing, thereby removing the front-end problem of pulse pileup. The word is used simultaneously in several internal processing schemes that assemble the data in a number of more directly useable forms. The detector includes a multi-mode counter that executes a number of different count algorithms in parallel to determine different attributes of the count data.

  14. Multiple Steady States in Ideal Two-Product Distillation

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Multiple Steady States in Ideal Two-Product Distillation Elling W. Jacobsen and Sigurd Skogestad Chemical Engineering Dept., University of Trondheim-NTH, N-7034 Trondheim, Norway Simple distillation and compositions in the column. Introduction Multiple steady states (multiplicity) in distillation columns have

  15. Aalborg Universitet Hierarchical Control for Multiple DC Microgrids Clusters

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Hierarchical Control for Multiple DC Microgrids Clusters Shafiee, Qobad Control for Multiple DC Microgrids Clusters. I E E E Transactions on Energy Conversion. General rights, J. C. Vasquez, and J. M. Guerrero, "Hierarchical Control for Multiple DC-Microgrids Clusters," IEEE

  16. Multiplicity Distributions in QCD at Very High Energies

    E-Print Network [OSTI]

    I. M. Dremin

    1994-08-18T23:59:59.000Z

    Recent results in QCD on multiplicity distributions are briefly reviewed. QCD is able to predict very tiny features of multiplicity distributions which demonstrate that the negative binomial distribution (and, more generally, any infinitely divisible distribution) is inappropriate for precise description of experimental data. New fits of high energy multiplicity distributions can be derived.

  17. Statistical estimation of multiple faults in aircraft gas turbine engines

    E-Print Network [OSTI]

    Ray, Asok

    415 Statistical estimation of multiple faults in aircraft gas turbine engines S Sarkar, C Rao of multiple faults in aircraft gas-turbine engines, based on a statistical pattern recognition tool called commercial aircraft engine. Keywords: aircraft propulsion, gas turbine engines, multiple fault estimation

  18. Effective Metaroutines for Organizational Problem Solving EFFECTIVE METAROUTINES FOR ORGANIZATIONAL PROBLEM SOLVING

    E-Print Network [OSTI]

    Sobek II, Durward K.

    Effective Metaroutines for Organizational Problem Solving 1 EFFECTIVE METAROUTINES FOR ORGANIZATIONAL PROBLEM SOLVING MANIMAY GHOSH and DURWARD K. SOBEK II* Mechanical and Industrial Engineering@ie.montana.edu * Corresponding Author #12;Effective Metaroutines for Organizational Problem Solving 2 Abstract Short

  19. 16.513 Midterm Exam (Spring 2005) There are 5 problems and one bonus problem.

    E-Print Network [OSTI]

    Hu, Tingshu

    16.513 Midterm Exam (Spring 2005) There are 5 problems and one bonus problem. 1. (15) For eachSSS -= - -= 100 110 110 , 31 20 21 AA #12;6. Bonus problem (20) : Given a state equation Bu

  20. Characteristics of problem solving success in physics 

    E-Print Network [OSTI]

    Wallace, Marsali Beth

    2014-06-28T23:59:59.000Z

    Skills in problem solving, including finding and applying the appropriate knowledge to a problem, are important learning outcomes from the completion of a Physics degree at University. This thesis investigates the ...

  1. Computational evaluation of two reactor benchmark problems

    E-Print Network [OSTI]

    Cowan, James Anthony

    1998-01-01T23:59:59.000Z

    macroscopic cross sections for various pincell models in each benchmark problem. DEF3D, a multigroup multidimensional diffusion code, was used to evaluate the uranium-fueled lattice benchmark problem of the American Nuclear Society. TWODANT, a multigroup, two...

  2. A system analysis of the spam problem

    E-Print Network [OSTI]

    Weinberg, Gabriel R. (Gabriel Reiter)

    2005-01-01T23:59:59.000Z

    This thesis considers the problem of the large amount of unwanted email that is being sent and received, which lowers the aggregate value of email as a communication medium from what it would otherwise be. This problem is ...

  3. The Multi-Network Design Problem

    E-Print Network [OSTI]

    Balakrishnan, Anantaram

    This paper studies a new multi-facility network synthesis problem, called the Multi-level Network Design (MLND) problem, that arises in the topological design of hierarchical communication, transportation, and electric ...

  4. Some Problems in Stochastic Portfolio Theory

    E-Print Network [OSTI]

    Liu, Xiaobo

    2007-12-11T23:59:59.000Z

    We consider some problems in the stochastic portfolio theory of equity markets. In the first part, we maximize the expected terminal value of a portfolio of equities. The optimal investment problem is then solved by the stochastic control approach...

  5. Nonparametric Bayesian analysis of some clustering problems

    E-Print Network [OSTI]

    Ray, Shubhankar

    2006-10-30T23:59:59.000Z

    it useful for clustering problems where the number of clusters is unknown. We develop nonparametric Bayesian models for two different clustering problems, namely functional and graphical clustering. We propose a nonparametric Bayes wavelet model...

  6. The 3He Supply Problem

    SciTech Connect (OSTI)

    Kouzes, Richard T.

    2009-05-01T23:59:59.000Z

    One of the main uses for 3He is in gas proportional counters for neutron detection. Radiation portal monitors deployed for homeland security and non-proliferation use such detectors. Other uses of 3He are for research detectors, commercial instruments, well logging detectors, dilution refrigerators, for targets or cooling in nuclear research, and for basic research in condensed matter physics. The US supply of 3He comes almost entirely from the decay of tritium used in nuclear weapons by the US and Russia. A few other countries contribute a small amount to the world’s 3He supply. Due to the large increase in use of 3He for homeland security, the supply has dwindled, and can no longer meet the demand. This white paper reviews the problems of supply, utilization, and alternatives.

  7. Quantum simulations of physics problems

    SciTech Connect (OSTI)

    Somma, R. D. (Rolando D.); Ortiz, G. (Gerardo); Knill, E. H. (Emanuel H.); Gubernatis, J. E.

    2003-01-01T23:59:59.000Z

    If a large Quantum Computer (QC) existed today, what type of physical problems could we efficiently simulate on it that we could not efficiently simulate on a classical Turing machine? In this paper we argue that a QC could solve some relevant physical 'questions' more efficiently. The existence of one-to-one mappings between different algebras of observables or between different Hilbert spaces allow us to represent and imitate any physical system by any other one (e.g., a bosonic system by a spin-1/2 system). We explain how these mappings can be performed, and we show quantum networks useful for the efficient evaluation of some physical properties, such as correlation functions and energy spectra.

  8. Quantum geometrodynamics creates new problems

    E-Print Network [OSTI]

    T. P. Shestakova

    2008-10-22T23:59:59.000Z

    The development of last years in quantum geometrodynamics highlights new problems which were not obvious in its first formulation proposed by Wheeler and DeWitt. At the first stage the main task was to apply known quantization schemes to gravitational field or a certain cosmological model. This way has led to the realization of the fact that a quantum description of the Universe is impossible without implicit or explicit indication to a reference frame presented by some medium, filling the whole Universe, with its own equation of state and thermodynamical properties. Thus the questions arise, should one seek for a "privileged" reference frame or consider all the variety of gauge conditions and appropriate solutions for the wave function? It is worth noting that thermodynamical properties of such a quantum Universe would also depend on a chosen reference frame to some extent. So, we need a self-consistent quantum theoretical and thermodynamical description of the Universe.

  9. San Dieguito Citizen Science Multiple Species Monitoring Program 1 San Dieguito Citizen Science Multiple Species Monitoring Program

    E-Print Network [OSTI]

    Wang, Deli

    San Dieguito Citizen Science Multiple Species Monitoring Program 1 San Dieguito Citizen Science Multiple Species Monitoring Program The goal from current citizen science groups (such as Audubon and SD Tracking Team

  10. Optimization Online - Equivalence of Convex Problem Geometry ...

    E-Print Network [OSTI]

    Robert Freund

    2009-02-07T23:59:59.000Z

    Feb 7, 2009 ... Equivalence of Convex Problem Geometry and Computational Complexity in the Separation Oracle Model. Robert Freund (rfreund ***at*** ...

  11. The Monty Hall Problem Richard D. Gill

    E-Print Network [OSTI]

    Gill, Richard D.

    the Monty Hall problem is often called the Monty Hall para- dox. The key to accepting and understanding

  12. Complete Solutions and Triality Theory to a Nonconvex Optimization Problem with Double-Well Potential in R^n

    E-Print Network [OSTI]

    Daniel Morales-Silva; David Yang Gao

    2011-10-03T23:59:59.000Z

    The main purpose of this research note is to show that the triality theory can always be used to identify both global minimizer and the biggest local maximizer in global optimization. An open problem left on the double-min duality is solved for a nonconvex optimization problem with double-well potential in $\\real^n$, which leads to a complete set of analytical solutions. Also a convergency theorem is proved for linear perturbation canonical dual method, which can be used for solving global optimization problems with multiple solutions. The methods and results presented in this note pave the way towards the proof of the triality theory in general cases.

  13. Einfuhrung Matroid-Probleme in Graphen

    E-Print Network [OSTI]

    Baumann, Tobias

    Einf¨uhrung Matroid-Probleme in Graphen Graphen-Algorithmen Matroide und Greedy-Algorithmen Dr. Tobias Baumann 14. Juni 2011 Dr. Tobias Baumann Matroide #12;Einf¨uhrung Matroid-Probleme in Graphen MST. Tobias Baumann Matroide #12;Einf¨uhrung Matroid-Probleme in Graphen MST Matroide Greedy-Algorithmen Wir

  14. COSMOLOGICAL LITHIUM PROBLEM: A DIFFERENT APPROACH

    E-Print Network [OSTI]

    ?umer, Slobodan

    LITHIUM 7Li sources BBN cosmic-ray interactions (ingredients: shock waves, magnetic field, chargedCOSMOLOGICAL LITHIUM PROBLEM: A DIFFERENT APPROACH Tijana Prodanovi, University of Novi Sad Tamara Observations - boxes 4He ­ OK D ­ right on! 7Li ­ problem! Factor of 3-4 discrepancy! LITHIUM PROBLEM

  15. The Polymatroid Steiner Problems G. Calinescu1

    E-Print Network [OSTI]

    Zelikovsky, Alexander

    sensors capable of monitoring all targets and t is time during which T is used. A simple energy model. #12;2 G. Calinescu and A. Zelikovsky Target-monitoring sensor network lifetime problem. Find problem which is dual to the target-monitoring sensor network lifetime problem. Target-monitoring sensor

  16. Secret Santa, Generalized (and Some Enumerative Problems)

    E-Print Network [OSTI]

    Donnelly, Rob

    Secret Santa, Generalized (and Some Enumerative Problems) Rob Donnelly May 17, 2006 #12;Secret Santa, Generalized May 17, 2006 The Original Secret Santa Problem The Original Secret Santa Problem/she takes A mathematical interpretation of Secret Santa The question essentially asks for the pro- portion

  17. Expression of multiple proteins in transgenic plants

    DOE Patents [OSTI]

    Vierstra, Richard D. (Madison, WI); Walker, Joseph M. (Madison, WI)

    2002-01-01T23:59:59.000Z

    A method is disclosed for the production of multiple proteins in transgenic plants. A DNA construct for introduction into plants includes a provision to express a fusion protein of two proteins of interest joined by a linking domain including plant ubiquitin. When the fusion protein is produced in the cells of a transgenic plant transformed with the DNA construction, native enzymes present in plant cells cleave the fusion protein to release both proteins of interest into the cells of the transgenic plant. Since the proteins are produced from the same fusion protein, the initial quantities of the proteins in the cells of the plant are approximately equal.

  18. Analysis of Dynamic Multiplicity Fluctuations at PHOBOS

    E-Print Network [OSTI]

    Zhengwei Chai; for the PHOBOS Collaboration

    2005-09-20T23:59:59.000Z

    This paper presents the analysis of the dynamic fluctuations in the inclusive charged particle multiplicity measured by PHOBOS for Au+Au collisions at sqrt(s_NN)=200$GeV within the pseudo-rapidity range of -3analysis is presented, together with the discussion of their physics meaning. Then the procedure for the extraction of dynamic fluctuations is described. Some preliminary results are included to illustrate the correlation features of the fluctuation observable. New dynamic fluctuations results will be available in a later publication.

  19. Experience with pipelined multiple instruction streams

    SciTech Connect (OSTI)

    Jordan, H.F.

    1984-01-01T23:59:59.000Z

    The authors introduces the architecture and programming environment of the heterogeneous element processor (HEP) and surveys a range of scientific applications programs for which parallel versions have been produced, tested, and analyzed on this computer. In all cases, the ideal of one instruction completion every pipeline step time is closely approached. Speed limitations in the parallel programs are more often a result of the extra code necessary to ensure synchronization than of actual synchronization lockout at execution time. The pipelined multiple instruction stream architecture is shown to cover a wide range of applications with good utilization of the parallel hardware. 35 references.

  20. Multiple frequency method for operating electrochemical sensors

    DOE Patents [OSTI]

    Martin, Louis P. (San Ramon, CA)

    2012-05-15T23:59:59.000Z

    A multiple frequency method for the operation of a sensor to measure a parameter of interest using calibration information including the steps of exciting the sensor at a first frequency providing a first sensor response, exciting the sensor at a second frequency providing a second sensor response, using the second sensor response at the second frequency and the calibration information to produce a calculated concentration of the interfering parameters, using the first sensor response at the first frequency, the calculated concentration of the interfering parameters, and the calibration information to measure the parameter of interest.

  1. Entropic uncertainty relations for multiple measurements

    E-Print Network [OSTI]

    Shang Liu; Liang-Zhu Mu; Heng Fan

    2014-11-23T23:59:59.000Z

    We present the entropic uncertainty relations for multiple measurement settings in quantum mechanics. Those uncertainty relations are obtained for both cases with and without the presence of quantum memory. They take concise forms which can be proven in a unified method and easy to calculate. Our results recover the well known entropic uncertainty relations for two observables, which show the uncertainties about the outcomes of two incompatible measurements. Those uncertainty relations are applicable in both foundations of quantum theory and the security of many quantum cryptographic protocols.

  2. Improving the quality of multiple sequence alignment

    E-Print Network [OSTI]

    Lu, Yue

    2009-05-15T23:59:59.000Z

    sites identification (Taylor, 1987; Carillo and Lipman, 1988; Thompson et al., 1994; Gotoh, 1996; Morgenstern et al., 1996; Stoye, 1998; Notredame et al., 2000; Lee et al., 2002; Edgar, 2004; Van Walle et al., 2004; Do et al., 2005). In recent years... and the next two most similar alignments are repeatedly combined until a single multiple alignment is obtained (Feng and Doolittle, 1987; Thompson et al., 1994; Notredame et al., 2000; Edgar 2004; Do et al., 2005; Pei and Grishin, 2006; Roshan and Livesay...

  3. Comments on Multiple M2-branes

    E-Print Network [OSTI]

    Jonathan Bagger; Neil Lambert

    2008-02-02T23:59:59.000Z

    Recently a three-dimensional field theory was derived that is consistent with all the symmetries expected of the worldvolume action for multiple M2-branes. In this note we examine several physical predictions of this model and show that they are in agreement with expected M2-brane dynamics. In particular, we discuss the quantization of the Chern-Simons coefficient, the vacuum moduli space, a massive deformation leading to fuzzy three-sphere vacua, and a possible large n limit. In this large n limit, the fuzzy funnel solution correctly reproduces the mass of an M5-brane.

  4. Domain wall cosmology and multiple accelerations

    SciTech Connect (OSTI)

    Lee, Bum-Hoon [CQUeST, Sogang University, Seoul, Korea 121-742 (Korea, Republic of); Department of Physics, Sogang University, Seoul, 121-742 (Korea, Republic of); Lee, Wonwoo; Nam, Siyoung; Park, Chanyong [CQUeST, Sogang University, Seoul, 121-742 (Korea, Republic of)

    2007-05-15T23:59:59.000Z

    We classify the cosmological behaviors of the domain wall under junctions between two spacetimes in terms of various parameters: cosmological constants of bulk spacetime, a tension of a domain wall, and mass parameters of the black-hole-type metric. Especially, we consider the false-true vacuum-type junctions and the domain wall connecting between an inner AdS space and an outer AdS Reissner-Nordstroem black hole. We find that there exists a solution to the junction equations with multiple accelerations.

  5. Multiple volume compressor for hot gas engine

    DOE Patents [OSTI]

    Stotts, Robert E. (Clifton Park, NY)

    1986-01-01T23:59:59.000Z

    A multiple volume compressor for use in a hot gas (Stirling) engine having a plurality of different volume chambers arranged to pump down the engine when decreased power is called for and return the working gas to a storage tank or reservoir. A valve actuated bypass loop is placed over each chamber which can be opened to return gas discharged from the chamber back to the inlet thereto. By selectively actuating the bypass valves, a number of different compressor capacities can be attained without changing compressor speed whereby the capacity of the compressor can be matched to the power available from the engine which is used to drive the compressor.

  6. Multiple-scattering series for color transparency

    SciTech Connect (OSTI)

    Greenberg, W.R.; Miller, G.A. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1993-03-01T23:59:59.000Z

    Cold transparency (CT) depends on the formation of a wave packet of small spatial extent. It is useful to interpret experimental searches for CT with a multiple-scattering series based on wave-packet--nucleon scattering instead of the standard one using nucleon-nucleon scattering. We develop several new techniques which are valid for differing ranges of energy. These techniques are applied to verify some early approximations, study new forms of the wave-packet--nucleon interaction, examine effects of treating wave packets of nonzero size, and predict the production of [ital N][sup *]'s in electron scattering experiments.

  7. Multiple path transport in quantum networks

    E-Print Network [OSTI]

    Cohen, Doron

    .Horowitz, and C.Jarzynski1 (PRL 2008). #12;Motivation Brouwer [PRB 1998], following BPT - calculation of Q in open geometry Shutenko, Aleiner, Altshuler [PRB 2000] - Wrong conception of Q quantization DC [arXiv 2002, PRB 2003] - Kubo approach to quantum pumping - too formal Moskalets, Buttiker [PRB 2003] - Problem to apply

  8. 6. Multiple sequence alignment methods In Chapter 5, we assumed that a reasonable multiple sequence alignment was already

    E-Print Network [OSTI]

    Xie, Jun

    6. Multiple sequence alignment methods In Chapter 5, we assumed that a reasonable multiple sequence sequences. Biologists produce high quality multiple sequence alignments by hand using expert knowledge of protein sequence evolution. Importance factors include: specific sorts of columns in alignments

  9. Double multiple-relaxation-time lattice Boltzmann model for solid-liquid phase change with natural convection in porous media

    E-Print Network [OSTI]

    Liu, Qing

    2015-01-01T23:59:59.000Z

    In this paper, a double multiple-relaxation-time lattice Boltzmann model is developed for simulating transient solid-liquid phase change problems in porous media at the representative elementary volume scale. The model uses two different multiple-relaxation-time lattice Boltzmann equations, one for the flow field and the other for the temperature field with nonlinear latent heat source term. The model is based on the generalized non-Darcy formulation, and the solid-liquid phase change interface is traced through the liquid fraction which is determined by the enthalpy method. The model is validated by numerical simulations of conduction melting in a semi-infinite space, solidification in a semi-infinite corner, and convection melting in a square cavity filled with porous media. The numerical results demonstrate the efficiency and accuracy of the present model for simulating transient solid-liquid phase change problems in porous media.

  10. Complexity analysis of pipeline mapping problems in distributed heterogeneous networks

    SciTech Connect (OSTI)

    Lin, Ying [University of Tennessee, Knoxville (UTK); Wu, Qishi [ORNL; Zhu, Mengxia [ORNL; Rao, Nageswara S [ORNL

    2009-04-01T23:59:59.000Z

    Largescale scientific applications require using various system resources to execute complex computing pipelines in distributed networks to support collaborative research. System resources are typically shared in the Internet or over dedicated connections based on their location, availability, capability, and capacity. Optimizing the network performance of computing pipelines in such distributed environments is critical to the success of these applications. We consider two types of largescale distributed applications: (1) interactive applications where a single dataset is sequentially processed along a pipeline; and (2) streaming applications where a series of datasets continuously flow through a pipeline. The computing pipelines of these applications consist of a number of modules executed in a linear order in network environments with heterogeneous resources under different constraints. Our goal is to find an efficient mapping scheme that allocates the modules of a pipeline to network nodes for minimum endtoend delay or maximum frame rate. We formulate the pipeline mappings in distributed environments as optimization problems and categorize them into six classes with different optimization goals and mapping constraints: (1) Minimum Endtoend Delay with No Node Reuse (MEDNNR), (2) Minimum Endtoend Delay with Contiguous Node Reuse (MEDCNR), (3) Minimum Endtoend Delay with Arbitrary Node Reuse (MEDANR), (4) Maximum Frame Rate with No Node Reuse or Share (MFRNNRS), (5) Maximum Frame Rate with Contiguous Node Reuse and Share (MFRCNRS), and (6) Maximum Frame Rate with Arbitrary Node Reuse and Share (MFRANRS). Here, 'contiguous node reuse' means that multiple contiguous modules along the pipeline may run on the same node and 'arbitrary node reuse' imposes no restriction on node reuse. Note that in interactive applications, a node can be reused but its resource is not shared. We prove that MEDANR is polynomially solvable and the rest are NP-complete. MEDANR, where either contiguous or noncontiguous modules in the pipeline can be mapped onto the same node, is essentially the Maximum n-hop Shortest Path problem, and can be solved using a dynamic programming method. In MEDNNR and MFRNNRS, any network node can be used only once, which requires selecting the same number of nodes for onetoone onto mapping. We show its NP-completeness by reducing from the Hamiltonian Path problem. Node reuse is allowed in MEDCNR, MFRCNRS and MFRANRS, which are similar to the Maximum n-hop Shortest Path problem that considers resource sharing. We prove their NP-completeness by reducing from the Disjoint-Connecting-Path Problem and Widest path with the Linear Capacity Constraints problem, respectively.

  11. Many Californians with Asthma Have Problems Understanding Their Doctor

    E-Print Network [OSTI]

    Babey, Susan H.; Meng, Ying-Ying; Jones, Malia

    2009-01-01T23:59:59.000Z

    Management Plan Problems Understanding Doctor No Problems Source: 2005 California Health Interview Survey

  12. Top-percentile traffic routing problem 

    E-Print Network [OSTI]

    Yang, Xinan

    2012-06-25T23:59:59.000Z

    Multi-homing is a technology used by Internet Service Provider (ISP) to connect to the Internet via multiple networks. This connectivity enhances the network reliability and service quality of the ISP. However, using ...

  13. An efficient evolutionary algorithm for solving incrementally structured problems

    E-Print Network [OSTI]

    Ansel, Jason Andrew

    Many real world problems have a structure where small problem instances are embedded within large problem instances, or where solution quality for large problem instances is loosely correlated to that of small problem ...

  14. Bosonization of nonrelativistic fermions on a circle: Tomonaga's problem revisited

    SciTech Connect (OSTI)

    Dhar, Avinash; Mandal, Gautam [Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005 (India)

    2006-11-15T23:59:59.000Z

    We use the recently developed tools for an exact bosonization of a finite number N of nonrelativistic fermions to discuss the classic Tomonaga problem. In the case of noninteracting fermions, the bosonized Hamiltonian naturally splits into an O(N) piece and an O(1) piece. We show that in the large-N and low-energy limit, the O(N) piece in the Hamiltonian describes a massless relativistic boson, while the O(1) piece gives rise to cubic self-interactions of the boson. At finite N and high energies, the low-energy effective description breaks down and the exact bosonized Hamiltonian must be used. We also comment on the connection between the Tomonaga problem and pure Yang-Mills theory on a cylinder. In the dual context of baby universes and multiple black holes in string theory, we point out that the O(N) piece in our bosonized Hamiltonian provides a simple understanding of the origin of two different kinds of nonperturbative O(e{sup -N}) corrections to the black hole partition function.

  15. Constrained Graph Optimization: Interdiction and Preservation Problems

    SciTech Connect (OSTI)

    Schild, Aaron V [Los Alamos National Laboratory

    2012-07-30T23:59:59.000Z

    The maximum flow, shortest path, and maximum matching problems are a set of basic graph problems that are critical in theoretical computer science and applications. Constrained graph optimization, a variation of these basic graph problems involving modification of the underlying graph, is equally important but sometimes significantly harder. In particular, one can explore these optimization problems with additional cost constraints. In the preservation case, the optimizer has a budget to preserve vertices or edges of a graph, preventing them from being deleted. The optimizer wants to find the best set of preserved edges/vertices in which the cost constraints are satisfied and the basic graph problems are optimized. For example, in shortest path preservation, the optimizer wants to find a set of edges/vertices within which the shortest path between two predetermined points is smallest. In interdiction problems, one deletes vertices or edges from the graph with a particular cost in order to impede the basic graph problems as much as possible (for example, delete edges/vertices to maximize the shortest path between two predetermined vertices). Applications of preservation problems include optimal road maintenance, power grid maintenance, and job scheduling, while interdiction problems are related to drug trafficking prevention, network stability assessment, and counterterrorism. Computational hardness results are presented, along with heuristic methods for approximating solutions to the matching interdiction problem. Also, efficient algorithms are presented for special cases of graphs, including on planar graphs. The graphs in many of the listed applications are planar, so these algorithms have important practical implications.

  16. Towards the cosmological constant problem

    E-Print Network [OSTI]

    Eun Kyung Park; Pyung Seong Kwon

    2014-12-15T23:59:59.000Z

    We apply a new self-tuning mechanism to the well-known Kachru-Kallosh-Linde-Trivedi (KKLT) model to address the cosmological constant problem. In this mechanism the cosmological constant $\\lambda$ contains a supersymmetry breaking term ${\\mathcal E}_{\\rm SB}$ besides the usual scalar potential ${\\mathcal V}_{\\rm scalar}$ of the $N=1$ supergravity, which is distinguished from the usual theories where $\\lambda$ is directly identified with ${\\mathcal V}_{\\rm scalar}$ alone. Also in this mechanism, whether $\\lambda$ vanishes or not is basically determined by the tensor structure of the scalar potential density, not by the zero or nonzero values of the scalar potential itself. As a result of this application we find that the natural scenario for the vanishing $\\lambda$ of the present universe is to take one of the AdS (rather than dS) vacua of KKLT as the background vacuum of our present universe. This AdS vacuum scenario does not suffer from the problematics of the dS vacua of KKLT. The background vacuum is stable both classically and quantum mechanically (no tunneling instabilities), and the value $\\lambda =0$ is also stable against quantum corrections because in this scenario the perturbative corrections of ${\\mathcal V}_{\\rm scalar}$ and quantum fluctuations $\\delta_Q {\\hat I}_{\\rm brane}^{(NS)} + \\delta_Q {\\hat I}_{\\rm brane}^{(R)}$ on the branes are all gauged away by an automatic cancelation between ${\\mathcal V}_{\\rm scalar} + \\delta_Q {\\hat I}_{\\rm brane}^{(NS)} + \\delta_Q {\\hat I}_{\\rm brane}^{(R)}$ and ${\\mathcal E}_{\\rm SB}$.

  17. Common Exam 2 Physics 111 Fall 2006 Name _____________________________ A Total Number of Points is 15 (Multiple Choice and Workout Problems).

    E-Print Network [OSTI]

    Janow, Rich

    ) 4.08 m E) 20.0 m ( ) 22 2 / / 2 2 3.02 N l tv F ma m m r l l m t = = = = = net, net, 2 0 7.84 m;Common Exam 2 Physics 111 Fall 2006 Name _____________________________ A Page 2 4.) If a ski lift raises power is required of the force making the lift? A) 0.264 kW B) 1.65 kW C) 26.4 kW D) 66.0 kW E) 165.0 k

  18. Multimodal Sensor Networks We investigate the benefits that multiple modalities bring to the problems of target and

    E-Print Network [OSTI]

    Amir, Yair

    with unknown exponent beta. The goal of the calibration process is to estimate the value of beta. The process of the cameras are known. Once the mote locations are known, cameras go to sleep to conserve energy. The motes

  19. A General Abundance Problem for All Self-Enrichment Scenarios for the Origin of Multiple Populations in Globular Clusters

    E-Print Network [OSTI]

    Bastian, Nate; Salaris, Maurizio

    2015-01-01T23:59:59.000Z

    A number of stellar sources have been advocated as the origin of the enriched material required to explain the abundance anomalies seen in ancient globular clusters (GCs). Most studies to date have compared the yields from potential sources (asymptotic giant branch stars (AGBs), fast rotating massive stars (FRMS), high mass interacting binaries (IBs), and very massive stars (VMS)) with observations of specific elements that are observed to vary from star-to-star in GCs, focussing on extreme GCs such as NGC 2808, which display large He variations. However, a consistency check between the results of fitting extreme cases with the requirements of more typical clusters, has rarely been done. Such a check is particularly timely given the constraints on He abundances in GCs now available. Here we show that all of the popular enrichment sources fail to reproduce the observed trends in GCs, focussing primarily on Na, O and He. In particular, we show that any model that can fit clusters like NGC 2808, will necessarily...

  20. Multiple hearth furnace for reducing iron oxide

    DOE Patents [OSTI]

    Brandon, Mark M. (Charlotte, NC); True, Bradford G. (Charlotte, NC)

    2012-03-13T23:59:59.000Z

    A multiple moving hearth furnace (10) having a furnace housing (11) with at least two moving hearths (20) positioned laterally within the furnace housing, the hearths moving in opposite directions and each moving hearth (20) capable of being charged with at least one layer of iron oxide and carbon bearing material at one end, and being capable of discharging reduced material at the other end. A heat insulating partition (92) is positioned between adjacent moving hearths of at least portions of the conversion zones (13), and is capable of communicating gases between the atmospheres of the conversion zones of adjacent moving hearths. A drying/preheat zone (12), a conversion zone (13), and optionally a cooling zone (15) are sequentially positioned along each moving hearth (30) in the furnace housing (11).

  1. Multiple channel optical data acquisition system

    DOE Patents [OSTI]

    Fasching, G.E.; Goff, D.R.

    1985-02-22T23:59:59.000Z

    A multiple channel optical data acquisition system is provided in which a plurality of remote sensors monitoring specific process variable are interrogated by means of a single optical fiber connecting the remote station/sensors to a base station. The remote station/sensors derive all power from light transmitted through the fiber from the base station. Each station/sensor is individually accessed by means of a light modulated address code sent over the fiber. The remote station/sensors use a single light emitting diode to both send and receive light signals to communicate with the base station and provide power for the remote station. The system described can power at least 100 remote station/sensors over an optical fiber one mile in length.

  2. Conjugate gradient algorithms using multiple recursions

    SciTech Connect (OSTI)

    Barth, T.; Manteuffel, T.

    1996-12-31T23:59:59.000Z

    Much is already known about when a conjugate gradient method can be implemented with short recursions for the direction vectors. The work done in 1984 by Faber and Manteuffel gave necessary and sufficient conditions on the iteration matrix A, in order for a conjugate gradient method to be implemented with a single recursion of a certain form. However, this form does not take into account all possible recursions. This became evident when Jagels and Reichel used an algorithm of Gragg for unitary matrices to demonstrate that the class of matrices for which a practical conjugate gradient algorithm exists can be extended to include unitary and shifted unitary matrices. The implementation uses short double recursions for the direction vectors. This motivates the study of multiple recursion algorithms.

  3. Multiplicity features of nonadiabatic, autothermal tubular reactors

    SciTech Connect (OSTI)

    Lovo, M.; Balakotaiah, V. (Houston Univ., TX (United States). Dept. of Chemical Engineering)

    1992-01-01T23:59:59.000Z

    Singularity theory is combined with asymptotic analysis to determine the exact uniqueness-multiplicity boundary and ignition and extinction locus for the non-adiabatic, autothermal tubular reactor model. It is found that the steady-state behavior of the nonadiabatic reactor is described by the two limiting cases of adiabatic and strongly cooled models. The adiabatic case has been examined in a previous study. In this paper, the authors develop limiting models to describe the strongly cooled asymptotes. The authors also classify the different types of bifurcation diagrams of conversion vs. residence time using the results of singularity theory with a distinguished parameter. Analytical criteria are developed for predicting the conditions under which autothermal operation is feasible when heat losses are significant.

  4. The frequency of planets in multiple systems

    E-Print Network [OSTI]

    M. Bonavita; S. Desidera

    2007-03-29T23:59:59.000Z

    The frequency of planets in binaries is an important issue in the field of extrasolar planet studies, because of its relevance in estimating of the global planet population of our Galaxy and the clues it can give to our understanding of planet formation and evolution. However, only preliminary estimates are available in the literature. We analyze and compare the frequency of planets in multiple systems to the frequency of planets orbiting single stars. We also try to highlight possible connections between the frequency of planets and the orbital parameters of the binaries (such as the periastron and mass ratio.) A literature search was performed for binaries and multiple systems among the stars of the sample with uniform planet detectability defined by Fischer & Valenti (2005), and 202 of the 850 stars of the sample turned out to be binaries, allowing a statistical comparison of the frequency of planets in binaries and single stars and a study of the run of the planet frequency as a function of the binary separation. We found that the global frequency of planets in the binaries of the sample is not statistically different from that of planets in single stars. Even conservatively taking the probable incompleteness of binary detection in our sample into account, we estimate that the frequency of planets in binaries can be no more than a factor of three lower than that of planets in single stars. There is no significant dependence of planet frequency on the binary separation, except for a lower value of frequency for close binaries. However, this is probably not as low as required to explain the presence of planets in close binaries only as the result of modifications of the binary orbit after the planet formation.

  5. Strong Equivalence of Qualitative Optimization Problems

    E-Print Network [OSTI]

    Faber, Wolfgang; Woltran, Stefan

    2011-01-01T23:59:59.000Z

    We introduce the framework of qualitative optimization problems (or, simply, optimization problems) to represent preference theories. The formalism uses separate modules to describe the space of outcomes to be compared (the generator) and the preferences on outcomes (the selector). We consider two types of optimization problems. They differ in the way the generator, which we model by a propositional theory, is interpreted: by the standard propositional logic semantics, and by the equilibrium-model (answer-set) semantics. Under the latter interpretation of generators, optimization problems directly generalize answer-set optimization programs proposed previously. We study strong equivalence of optimization problems, which guarantees their interchangeability within any larger context. We characterize several versions of strong equivalence obtained by restricting the class of optimization problems that can be used as extensions and establish the complexity of associated reasoning tasks. Understanding strong equiv...

  6. Charged-Particle Multiplicity in Proton-Proton Collisions

    E-Print Network [OSTI]

    Jan Fiete Grosse-Oetringhaus; Klaus Reygers

    2010-02-24T23:59:59.000Z

    This article summarizes and critically reviews measurements of charged-particle multiplicity distributions and pseudorapidity densities in p+p(pbar) collisions between sqrt(s) = 23.6 GeV and sqrt(s) = 1.8 TeV. Related theoretical concepts are briefly introduced. Moments of multiplicity distributions are presented as a function of sqrt(s). Feynman scaling, KNO scaling, as well as the description of multiplicity distributions with a single negative binomial distribution and with combinations of two or more negative binomial distributions are discussed. Moreover, similarities between the energy dependence of charged-particle multiplicities in p+p(pbar) and e+e- collisions are studied. Finally, various predictions for pseudorapidity densities, average multiplicities in full phase space, and multiplicity distributions of charged particles in p+p(pbar) collisions at the LHC energies of sqrt(s) = 7 TeV, 10 TeV, and 14 TeV are summarized and compared.

  7. A regenerative multiple zone model for HCCI combustion

    SciTech Connect (OSTI)

    Hamosfakidis, Vasileios; Im, Hong G.; Assanis, Dennis N. [Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109 (United States)

    2009-04-15T23:59:59.000Z

    A new conserved scalar approach, the so-called regenerative multiple zone (RMZ) model, is introduced to simulate combustion in homogeneous charge compression ignition (HCCI) engines with significant products of combustion. In this approach, two conserved scalars are introduced, the mixture fraction Z and the initial exhaust gas fraction J, to determine uniquely the state of the reactive system as a function of the two conserved scalars and time. For the numerical solution of the HCCI combustion, the conserved scalar plane is divided into different zones, which represent homogeneous reactors with constant initial exhaust gas level. Particularly, the zones are created based on the distribution of the initial exhaust gases and are mixed and regenerated at every time step during combustion in order to account for the history effects which are due to the finite rate chemistry. A proper methodology to create and initialize the new zones during the combustion, the so-called zone creation strategy (ZCS), is also proposed. For validation, the RMZ model is implemented in the 2DRD code, which is a computational fluid dynamics code that solves the governing equations for a two-dimensional reaction-diffusion problem. Initially, the consistency of the new model is validated in a one-dimensional reaction-diffusion (RD) case. Subsequently, the necessity for a proper zone creation strategy is demonstrated by a two-dimensional RD case. Next, a parametric study is performed to investigate the sensitivity of the new model on the maximum number of zones that is used. Finally, the limitations as well as the advantages of the RMZ model are discussed. (author)

  8. Robust constrained shortest path problems under budgeted ...

    E-Print Network [OSTI]

    2014-09-12T23:59:59.000Z

    We study the robust constrained shortest path problem under resource uncertainty. .... they assess the effectiveness of the label-setting algorithm based on the ...

  9. The Balanced Academic Curriculum Problem Revisited

    E-Print Network [OSTI]

    Marco Chiarandini

    2009-12-29T23:59:59.000Z

    Dec 29, 2009 ... In this article, we introduce a generalized version of the problem that ... approach and assessed the quality of solutions with respect to lower ...

  10. The recoverable robust tail assignment problem

    E-Print Network [OSTI]

    2012-12-17T23:59:59.000Z

    In August 2011 the on-time performance of the airline industry of Australia ... robustness into the aircraft routing problem is via key performance indicators, ...

  11. ROBUST PRODUCTION MANAGEMENT Abstract The problem of ...

    E-Print Network [OSTI]

    2011-01-28T23:59:59.000Z

    The problem of production management can often be cast in the form of a linear ... management contracts modelled as virtual production plants) we need to ...

  12. Relaxations and discretizations for the pooling problem

    E-Print Network [OSTI]

    2015-04-27T23:59:59.000Z

    cations in industries such as petrochemical refining, wastewater treatment and mining. ... is a very important class of problems in the petrochemical industry [16].

  13. On the Transportation Problem with Market Choice

    E-Print Network [OSTI]

    Pelin Damci-Kurt

    2013-04-03T23:59:59.000Z

    Apr 3, 2013 ... Abstract: We study a variant of the classical transportation problem in which suppliers with limited capacities have a choice of which demands ...

  14. CHANCE-CONSTRAINED BINARY PACKING PROBLEMS 1 ...

    E-Print Network [OSTI]

    2013-12-19T23:59:59.000Z

    at least 1 ? ?, where ? is a given reliability threshold. Specifically, given a set N of ...... OR-library: Distributing test problems by electronic mail. J. Oper. Res. Soc.

  15. Department of Mathematics: Problem of the Week

    E-Print Network [OSTI]

    A panel in the Mathematics Department publishes a challenging problem once a week and invites college & pre-college students, faculty, and staff to submit ...

  16. test problem for packing_sumit

    E-Print Network [OSTI]

    chenwang

    2006-07-21T23:59:59.000Z

    Test problems are generally used to effectively evaluate the algorithms. Based on the engineering background of the layout optimization for a retrievable satellite ...

  17. A physical approach to Tsirelson's problem

    E-Print Network [OSTI]

    Miguel Navascues; Tom Cooney; David Perez-Garcia; Ignacio Villanueva

    2011-05-17T23:59:59.000Z

    Tsirelson's problem deals with how to model separate measurements in quantum mechanics. In addition to its theoretical importance, the resolution of Tsirelson's problem could have great consequences for device independent quantum key distribution and certified randomness. Unfortunately, understanding present literature on the subject requires a heavy mathematical background. In this paper, we introduce quansality, a new theoretical concept that allows to reinterpret Tsirelson's problem from a foundational point of view. Using quansality as a guide, we recover all known results on Tsirelson's problem in a clear and intuitive way.

  18. Solving the Rectangular assignment problem and applications

    E-Print Network [OSTI]

    avolgen1

    2008-10-15T23:59:59.000Z

    The linear assignment problem (LAP), also denoted as the weighted bipartite ...... We think that the additional speed up is due to the programming language ( ...

  19. Problems of intraplate extensional tectonics, Western United...

    Open Energy Info (EERE)

    on the Great Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Problems of intraplate extensional tectonics, Western United...

  20. Robust newsvendor problem with autoregressive demand

    E-Print Network [OSTI]

    2014-05-19T23:59:59.000Z

    May 19, 2014 ... business decision problems, in fields such as managing booking and ...... Q? having available the demand historical records for t = 1, ..., T. 2.

  1. Fast methods for inverse wave scattering problems

    E-Print Network [OSTI]

    Lee, Jung Hoon, Ph. D. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Inverse wave scattering problems arise in many applications including computerized/diffraction tomography, seismology, diffraction/holographic grating design, object identification from radar singals, and semiconductor ...

  2. Equivalence of Convex Problem Geometry and Computational ...

    E-Print Network [OSTI]

    2009-01-19T23:59:59.000Z

    Equivalence of Convex Problem Geometry and Computational Complexity in the Separation Oracle Model?. Robert M. Freund†and Jorge Vera‡. January 2009.

  3. Student's algorithm solves real-world problem

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

    real-world problems," said David Kratzer of the Laboratory's High Performance Computer Systems group and the Supercomputing Challenge coordinator. The goal of the year-long...

  4. Optimization Problems in Natural Gas Transportation Systems

    E-Print Network [OSTI]

    Roger Z. Ríos-Mercado

    2015-03-02T23:59:59.000Z

    Mar 2, 2015 ... Abstract: This paper provides a review on the most relevant research works conducted to solve natural gas transportation problems via pipeline ...

  5. The Linear Complementarity Problem, Lemke Algorithm ...

    E-Print Network [OSTI]

    2011-03-01T23:59:59.000Z

    graphs [4], [14], [9] and the research articles in their reference lists. One of the interesting ..... The Linear Complementarity Problem, Academic-Press,. Inc., 1992

  6. Optimal timing problems in environmental economics

    E-Print Network [OSTI]

    Pindyck, Robert S.

    2001-01-01T23:59:59.000Z

    Because of the uncertainties and irreversibilities that are often inherent in environmental degradation, its prevention, and its economic consequences, environmental policy design can involve important problems of timing. ...

  7. Quantum Condensates in Nuclear Matter: Problems

    E-Print Network [OSTI]

    G. Ropke; D. Zablocki

    2010-01-11T23:59:59.000Z

    In connection with the contribution "Quantum Condensates in Nuclear Matter" some problems are given to become more familiar with the techniques of many-particle physics.

  8. Regenerator Location Problem in Flexible Optical Networks

    E-Print Network [OSTI]

    BARIS YILDIZ

    2014-11-22T23:59:59.000Z

    Nov 22, 2014 ... Abstract: In this study we introduce the regenerator location problem in flexible optical networks (RLP-FON). With a given traffic demand, ...

  9. Organic light emitting device having multiple separate emissive layers

    DOE Patents [OSTI]

    Forrest, Stephen R. (Ann Arbor, MI)

    2012-03-27T23:59:59.000Z

    An organic light emitting device having multiple separate emissive layers is provided. Each emissive layer may define an exciton formation region, allowing exciton formation to occur across the entire emissive region. By aligning the energy levels of each emissive layer with the adjacent emissive layers, exciton formation in each layer may be improved. Devices incorporating multiple emissive layers with multiple exciton formation regions may exhibit improved performance, including internal quantum efficiencies of up to 100%.

  10. Some Common Tomato Problems Are you having problems growing well-formed, blemish-free tomatoes? Many tomato problems,

    E-Print Network [OSTI]

    New Hampshire, University of

    , such as black plastic, straw, grass clippings (free of herbicides), or newspapers. Mulches can help moderate soil temperature and moisture, reduce pest problems, and keep the fruit clean. Black plastic mulch can as well as other problems. Improve soil moisture Maintain even soil moisture levels by applying a mulch

  11. Estimation of Highway Maintenance Marginal Cost under Multiple Maintenance Activities

    E-Print Network [OSTI]

    Anani, Shadi B.; Madanat, Samer M

    2010-01-01T23:59:59.000Z

    Marginal costs for road maintenance and operation - a cost2010-01) Estimation of Highway Maintenance Marginal Costunder Multiple Maintenance Activities Shadi B. Anani and

  12. V-132: IBM Tivoli System Automation Application Manager Multiple...

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

    IBM has acknowledged multiple vulnerabilities in IBM Tivoli System Automation Application Manager PLATFORM: The vulnerabilities are reported in IBM Tivoli System Automation...

  13. Optimization Online - Efficient Direct Multiple Shooting for Nonlinear ...

    E-Print Network [OSTI]

    Christian Kirches

    2011-05-31T23:59:59.000Z

    May 31, 2011 ... Efficient Direct Multiple Shooting for Nonlinear Model Predictive Control on Long Horizons. Christian Kirches (christian.kirches ***at*** ...

  14. Energetics and Dynamics of Peptide Fragmentation from Multiple...

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

    of peptides containing the LDIFSDF motif. Citation: Laskin J.2004."Energetics and Dynamics of Peptide Fragmentation from Multiple-Collision Activation and Surface-Induced...

  15. activates multiple signaling: Topics by E-print Network

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

    Burr Settles; Mark Craven; Soumya Ray 2008-01-01 13 SIC (MUltiple SIgnal Classification) CSP (Cross-power Spectrum Phase) Computer Technologies and Information Sciences Websites...

  16. Structuring Materials on Multiple Length Scales for Energy Application...

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

    Structuring Materials on Multiple Length Scales for Energy Applications October 25, 2012 at 3pm36-428 Adreas Stein Department of Chemistry, University of Minnesota astein...

  17. Optimization of Multiple Receivers Solar Power Tower systems

    E-Print Network [OSTI]

    Emilio Carrizosa

    2015-03-26T23:59:59.000Z

    Mar 26, 2015 ... Abstract: In this article a new procedure to optimize the design of a Multiple Receivers Solar Power Tower system is presented. The proposed ...

  18. Multiplicities of Pfaffian Intersections, and the Lojasiewicz Inequality ...

    E-Print Network [OSTI]

    1910-00-40T23:59:59.000Z

    and the exponents in the Lojasiewicz inequalities for Pfaffian functions. For the intersections defined by sparse polynomials, the multiplicities outside the.

  19. Energetics and Dynamics of Peptide Fragmentation from Multiple...

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

    Citation: Laskin J.2004."Energetics and Dynamics of Peptide Fragmentation from Multiple-Collision Activation and Surface-Induced Dissociation Studies."European Journal of Mass...

  20. activates multiple metabolic: Topics by E-print Network

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

    for nearly all of the carbohydrate catabolized. The combination of energy utilization Bennett, Albert F. 3 Multiple-instance active learning CiteSeer Summary: We present a...

  1. TMVOC, simulator for multiple volatile organic chemicals

    SciTech Connect (OSTI)

    Pruess, Karsten; Battistelli, Alfredo

    2003-03-25T23:59:59.000Z

    TMVOC is a numerical simulator for three-phase non-isothermal flow of water, soil gas, and a multicomponent mixture of volatile organic chemicals (VOCs) in multidimensional heterogeneous porous media. It is an extension of the TOUGH2 general-purpose simulation program developed at the Lawrence Berkeley National Laboratory. TMVOC is designed for applications to contamination problems that involve hydrocarbon fuel or organic solvent spills in saturated and unsaturated zones. It can model contaminant behavior under ''natural'' environmental conditions, as well as for engineered systems, such as soil vapor extraction, groundwater pumping, or steam-assisted source remediation. TMVOC is upwards compatible with T2VOC (Falta et al., 1995) and can be initialized from T2VOC-style initial conditions. The main enhancements in TMVOC relative to T2VOC are as follows: a multicomponent mixture of volatile organic chemicals can be modeled; any and all combinations of the three phases water-oil-gas are treated; several non-condensible gases may be present; diffusion is treated in all phases in a manner that is fully coupled with phase partitioning. This paper gives a brief summary of the methodology used in TMVOC as well as highlighting some implementation issues. Simulation of a NAPL spill and subsequent remediation is discussed for a 2-D vertical section of a saturated-unsaturated flow problem.

  2. The Inventory Routing Problem Ann Campbell

    E-Print Network [OSTI]

    Kleywegt, Anton

    The Inventory Routing Problem Ann Campbell Lloyd Clarke Anton Kleywegt Martin Savelsbergh 1 in which a supplier manages the inventory replenishment of its customers. Vendors save on distribution cost resources to inventory management. We present and discuss the inventory routing problem. The inven­ tory

  3. Extra Problems Moran & Shapiro, 5th Edition

    E-Print Network [OSTI]

    Erat Demonstrandum. Homework Problem 5.18: Hint: Carnot cycles are reversible cycles operating between from 1:0 to 1; ranges from 0:0 to 1). The C.O.P.s of reversible cycles between two reservoirs are given to absolute tem- peratures! Practice Problem 5.20: Real cycles have lower C.O.P.s than reversible cycles

  4. The Polymatroid Steiner Problems G. Calinescu1

    E-Print Network [OSTI]

    Calinescu, Gruia

    sensors capable of monitoring all targets and t is time during which T is used. A simple energy model. A preliminary version of this paper appeared in ISAAC 2004 #12;2 G. Calinescu and A. Zelikovsky Target-monitoring is on the following problem which solves the feasibility problem of the dual to the target-monitoring sensor network

  5. LOBSTERS AND THE LOBSTER PROBLEM IN MASSACHUSETTS

    E-Print Network [OSTI]

    necessary in the state of Massachusetts to make some regulations restricting the catching of lobstersLOBSTERS AND THE LOBSTER PROBLEM IN MASSACHUSETTS $ By George W. Field Chairman Massachusetts Board #12;LOBSTERS AND THE LOBSTER PROBLEM IN MASSACHUSETTS. By GEORGE W. FIELD, Chairmasi Massachusetts

  6. Willamette Math Problem of the Week

    E-Print Network [OSTI]

    Laison, Josh

    of "Zambonis For You" and their only driver. His job is to resurface the ice at the local skating rink. Wanting 32 key points on the ice rink, the zamboni will be wide enough to resurface every spot on the rinkWillamette Math Problem of the Week November 5 2007 An Ice Problem Tony Zamboni is the owner

  7. The Cauchy Problem of the Ward equation

    E-Print Network [OSTI]

    Derchyi Wu

    2008-06-02T23:59:59.000Z

    We generalize the results of Villarroel, Fokas and Ioannidou, Dai, Terng and Uhlenbeck to study the inverse scattering problem of the Ward equation with non-small data and solve the Cauchy problem of the Ward equation with a non-small purely continuous scattering data.

  8. Modular Lazy Search for Constraint Satisfaction Problems

    E-Print Network [OSTI]

    Tolmach, Andrew

    graph coloring #12;3 CSP Algorithm Zoo · No agreedupon common framework. · Many problems benefit from on this function is a constraint check · Problem: type CSP = CSP{vars::Int,vals::Int,rel::Rel} #12;7 States is complete. complete :: CSP -> State -> Bool complete CSP{vars} as = (length as == vars) · A state

  9. AME 101 Fall 2013 Problem Set #6

    E-Print Network [OSTI]

    the material for the final exam.) Problem #1 (thermodynamics, 1st Law, Control Mass) (20 points) A 1 kg iron? Problem #2 (thermodynamics, 1st Law, Control Mass) (20 points) a) How much energy (in Joules) is required in the earth's gravitational field (i.e. increase its potential energy instead of heating it), how high (in

  10. Global optimization in inverse problem of scatterometry

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Global optimization in inverse problem of scatterometry Lekbir Afraites1,2 Jerome Hazard3 Patrick as a parametric optimization problem using the Least Square criterion. In this work, a design procedure for global robust optimization is developed using Kriging and global optimization approaches. Robustness

  11. Hardness of approximation for quantum problems

    E-Print Network [OSTI]

    Sevag Gharibian; Julia Kempe

    2012-09-05T23:59:59.000Z

    The polynomial hierarchy plays a central role in classical complexity theory. Here, we define a quantum generalization of the polynomial hierarchy, and initiate its study. We show that not only are there natural complete problems for the second level of this quantum hierarchy, but that these problems are in fact hard to approximate. Using these techniques, we also obtain hardness of approximation for the class QCMA. Our approach is based on the use of dispersers, and is inspired by the classical results of Umans regarding hardness of approximation for the second level of the classical polynomial hierarchy [Umans, FOCS 1999]. The problems for which we prove hardness of approximation for include, among others, a quantum version of the Succinct Set Cover problem, and a variant of the local Hamiltonian problem with hybrid classical-quantum ground states.

  12. Knowledge Framework Implementation with Multiple Architectures - 13090

    SciTech Connect (OSTI)

    Upadhyay, H.; Lagos, L.; Quintero, W.; Shoffner, P. [Applied Research Center, Florida International University, Miami, FL 33174 (United States)] [Applied Research Center, Florida International University, Miami, FL 33174 (United States); DeGregory, J. [Office of D and D and Facility Engineering, Environmental Management, Department of Energy (United States)] [Office of D and D and Facility Engineering, Environmental Management, Department of Energy (United States)

    2013-07-01T23:59:59.000Z

    Multiple kinds of knowledge management systems are operational in public and private enterprises, large and small organizations with a variety of business models that make the design, implementation and operation of integrated knowledge systems very difficult. In recent days, there has been a sweeping advancement in the information technology area, leading to the development of sophisticated frameworks and architectures. These platforms need to be used for the development of integrated knowledge management systems which provides a common platform for sharing knowledge across the enterprise, thereby reducing the operational inefficiencies and delivering cost savings. This paper discusses the knowledge framework and architecture that can be used for the system development and its application to real life need of nuclear industry. A case study of deactivation and decommissioning (D and D) is discussed with the Knowledge Management Information Tool platform and framework. D and D work is a high priority activity across the Department of Energy (DOE) complex. Subject matter specialists (SMS) associated with DOE sites, the Energy Facility Contractors Group (EFCOG) and the D and D community have gained extensive knowledge and experience over the years in the cleanup of the legacy waste from the Manhattan Project. To prevent the D and D knowledge and expertise from being lost over time from the evolving and aging workforce, DOE and the Applied Research Center (ARC) at Florida International University (FIU) proposed to capture and maintain this valuable information in a universally available and easily usable system. (authors)

  13. Nanoparticles modified with multiple organic acids

    DOE Patents [OSTI]

    Cook, Ronald Lee (Lakewood, CO); Luebben, Silvia DeVito (Golden, CO); Myers, Andrew William (Arvada, CO); Smith, Bryan Matthew (Boulder, CO); Elliott, Brian John (Superior, CO); Kreutzer, Cory (Brighton, CO); Wilson, Carolina (Arvada, CO); Meiser, Manfred (Aurora, CO)

    2007-07-17T23:59:59.000Z

    Surface-modified nanoparticles of boehmite, and methods for preparing the same. Aluminum oxyhydroxide nanoparticles are surface modified by reaction with selected amounts of organic acids. In particular, the nanoparticle surface is modified by reactions with two or more different carboxylic acids, at least one of which is an organic carboxylic acid. The product is a surface modified boehmite nanoparticle that has an inorganic aluminum oxyhydroxide core, or part aluminum oxyhydroxide core and a surface-bonded organic shell. Organic carboxylic acids of this invention contain at least one carboxylic acid group and one carbon-hydrogen bond. One embodiment of this invention provides boehmite nanoparticles that have been surface modified with two or more acids one of which additional carries at least one reactive functional group. Another embodiment of this invention provides boehmite nanoparticles that have been surface modified with multiple acids one of which has molecular weight or average molecular weight greater than or equal to 500 Daltons. Yet, another embodiment of this invention provides boehmite nanoparticles that are surface modified with two or more acids one of which is hydrophobic in nature and has solubility in water of less than 15 by weight. The products of the methods of this invention have specific useful properties when used in mixture with liquids, as filler in solids, or as stand-alone entities.

  14. Multiple capillary biochemical analyzer with barrier member

    DOE Patents [OSTI]

    Dovichi, N.J.; Zhang, J.Z.

    1996-10-22T23:59:59.000Z

    A multiple capillary biochemical analyzer is disclosed for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal-to-noise ratio. 12 figs.

  15. Multiple capillary biochemical analyzer with barrier member

    DOE Patents [OSTI]

    Dovichi, Norman J. (Edmonton, CA); Zhang, Jian Z. (Edmonton, CA)

    1996-01-01T23:59:59.000Z

    A multiple capillary biochemical analyzer for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal to noise ratio.

  16. Multiple Membranes in M-theory

    E-Print Network [OSTI]

    Jonathan Bagger; Neil Lambert; Sunil Mukhi; Constantinos Papageorgakis

    2012-07-14T23:59:59.000Z

    We review developments in the theory of multiple, parallel membranes in M-theory. After discussing the inherent difficulties pertaining to a maximally supersymmetric lagrangian formulation with the appropriate field content and symmetries, we discuss how introducing the concept of 3-algebras allows for such a description. Different choices of 3-algebras lead to distinct classes of 2+1 dimensional theories with varying degrees of supersymmetry. We then describe how these are equivalent to a type of conventional superconformal Chern-Simons gauge theories at level k, coupled to bifundamental matter. Analysing the physical properties of these theories leads to the identification of a certain subclass of models with configurations of M2-branes in Z_k orbifolds of M-theory. In addition these models give rise to a whole new sector of the gauge/gravity duality in the form of an AdS_4/CFT_3 correspondence. We also discuss mass deformations, higher derivative corrections as well as the possibility of extracting information about M5-brane physics.

  17. Contributions on secretary problems, independent sets of rectangles and related problems

    E-Print Network [OSTI]

    Soto, José Antonio, Ph. D. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    We study three problems arising from different areas of combinatorial optimization. We first study the matroid secretary problem, which is a generalization proposed by Babaioff, Immorlica and Kleinberg of the classical ...

  18. Surface tension of multi-phase flow with multiple junctions governed by the variational principle

    E-Print Network [OSTI]

    Shigeki Matsutani; Kota Nakano; Katsuhiko Shinjo

    2011-08-02T23:59:59.000Z

    We explore a computational model of an incompressible fluid with a multi-phase field in three-dimensional Euclidean space. By investigating an incompressible fluid with a two-phase field geometrically, we reformulate the expression of the surface tension for the two-phase field found by Lafaurie, Nardone, Scardovelli, Zaleski and Zanetti (J. Comp. Phys. \\vol{113} \\yr{1994} \\pages{134-147}) as a variational problem related to an infinite dimensional Lie group, the volume-preserving diffeomorphism. The variational principle to the action integral with the surface energy reproduces their Euler equation of the two-phase field with the surface tension. Since the surface energy of multiple interfaces even with singularities is not difficult to be evaluated in general and the variational formulation works for every action integral, the new formulation enables us to extend their expression to that of a multi-phase ($N$-phase, $N\\ge2$) flow and to obtain a novel Euler equation with the surface tension of the multi-phase field. The obtained Euler equation governs the equation of motion of the multi-phase field with different surface tension coefficients without any difficulties for the singularities at multiple junctions. In other words, we unify the theory of multi-phase fields which express low dimensional interface geometry and the theory of the incompressible fluid dynamics on the infinite dimensional geometry as a variational problem. We apply the equation to the contact angle problems at triple junctions. We computed the fluid dynamics for a two-phase field with a wall numerically and show the numerical computational results that for given surface tension coefficients, the contact angles are generated by the surface tension as results of balances of the kinematic energy and the surface energy.

  19. Properties of Iterated Multiple Belief Revision Dongmo Zhang

    E-Print Network [OSTI]

    Zhang, Dongmo

    in the community of belief revision[2][5][9][10][13][17]. The major concern in the research is the reducibilityProperties of Iterated Multiple Belief Revision Dongmo Zhang School of Computing and Information investigate the properties of iterated multiple belief revision. We examine several typical assumptions

  20. Multiple Blind Watermarking in the DRM-Context

    E-Print Network [OSTI]

    Uhl, Andreas

    Multiple Blind Watermarking in the DRM-Context #12;#12;Multiple Blind Watermarking in the DRM have helped me throughout my master thesis in one or the other way. I want to thank my supervisor Andreas Uhl who guided me through my master thesis and supported me much more than a supervisor has to. I

  1. Linearly Exchangable Permits for the Efficient Control of Multiple Pollutants

    E-Print Network [OSTI]

    California at Berkeley. University of

    PWP-019 Linearly Exchangable Permits for the Efficient Control of Multiple Pollutants James B;Linear Exchangeable Permits for the Ecient Control of Multiple Pollutants James B. Bushnell University of pollutants. Often a new polluter is required to purchase an "o-set" from an existing polluter prepared

  2. Independent Control of Multiple Magnetic Microrobots in Three Dimensions

    E-Print Network [OSTI]

    Sitti, Metin

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

  3. Iterative gradient descent approach to multiple regression with fuzzy data

    E-Print Network [OSTI]

    Bargiela, Andrzej

    to multiple regression and lay foundation for a further generalisation to multiple non-linear regression dictates adoption of a more general viewpoint, regression variables are given as non-numerical entities of the parameters of the regression model have been derived only for the case of a simple linear regression, i

  4. CURVES OF GENUS 2 WITH p 2 MULTIPLICATION

    E-Print Network [OSTI]

    thesis, which looks at curves of genus 2 whose jacobians have p 2 multiplication, with the generalisedCURVES OF GENUS 2 WITH p 2 MULTIPLICATION PETER R. BENDING Abstract We give a universal family, and let f be a newform on \\Gamma 1 (N) whose field of Fourier coefficients is F (F is a totally real field

  5. Transdichotomous algorithms without multiplication some upper and lower bounds

    E-Print Network [OSTI]

    Brodnik, Andrej "Andy"

    Trans­dichotomous algorithms without multiplication ­ some upper and lower bounds Andrej Brodnik 1 that on a RAM with addition, subtraction, bitwise Boolean operations and shifts, but no multiplication; 1g w of w­bit bit strings (or numbers between 0 and 2 w \\Gamma 1). An increasingly popular

  6. Managing a Software Ecosystem Using a Multiple Software Product Line

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Managing a Software Ecosystem Using a Multiple Software Product Line: a Case Study on Digital increases the number of software ecosystems: software platforms developed and maintained in a decentralized YourCast from a single system to a medium- scale ecosystem, we show how organizing it as a multiple

  7. Sustaining multiple ecosystem functions in grassland communities requires higher biodiversity

    E-Print Network [OSTI]

    Zavaleta, Erika

    Sustaining multiple ecosystem functions in grassland communities requires higher biodiversity Erika (sent for review July 27, 2009) Society places value on the multiple functions of ecosystems from ecosystems to provide threshold levels of up to eight ecosystem functions simultaneously. Across years

  8. Multiple ERK substrates execute single biological processes in Caenorhabditis elegans

    E-Print Network [OSTI]

    Multiple ERK substrates execute single biological processes in Caenorhabditis elegans germ, 2008) RAS-extracellular signal regulated kinase (ERK) signaling governs multiple aspects of cell fate. Understanding how perturbations to the ERK signaling pathway lead to developmental disorders and cancer hinges

  9. MultipleChannel Multicast Scheduling for Scalable Bulkdata Transport \\Lambda

    E-Print Network [OSTI]

    Donahoo, Michael J.

    is the scheduling of data transmission across the multiple channels to accomodate asynchronous requests from clients) commensurate with its own rate capabilities. Variability in receiver rates can be accomodated, and the sender to accomodate asynchronous requests from clients. In this paper, we present and analyze a new multiple

  10. Objectives for Multiple-Species Conservation EMILY NICHOLSON

    E-Print Network [OSTI]

    Queensland, University of

    of extinction for multiple species. Although the assessment of extinction risk for single species is common, few researchers have formu- lated an objective function that combines the extinction risks of multiple species. We functions based on extinction risk across many species and illustrated the differences between

  11. SUPPORTING END-TO-END SECURITY ACROSS PROXIES WITH MULTIPLE-

    E-Print Network [OSTI]

    SUPPORTING END-TO-END SECURITY ACROSS PROXIES WITH MULTIPLE- CHANNEL SSL Yong Song, Victor C Columbia, 2356 Main Mall, Vancouver, BC V6T 1Z4, Canada Abstract: Secure Socket Layer (SSL) has functional used by clients to communicate with servers. This paper introduces Multiple-Channel SSL (MC-SSL

  12. Iterative Water-filling for Gaussian Vector Multiple Access Channels

    E-Print Network [OSTI]

    Li, Tiffany Jing

    Iterative Water-filling for Gaussian Vector Multiple Access Channels W. Yu, W. Rhee, S. Boyd, and J. Cioffi Zhenlei Shen Lehigh University March 29, 2005 Zhenlei Shen (Lehigh) Iterative Water-filling for Gaussian Vector Multiple Access ChannelsMarch 29, 2005 1 / 13 #12;1 Quick Review 2 Iterative Water

  13. The Energy Harvesting Multiple Access Channel with Energy Storage Losses

    E-Print Network [OSTI]

    Yener, Aylin

    The Energy Harvesting Multiple Access Channel with Energy Storage Losses Kaya Tutuncuoglu and Aylin considers a Gaussian multiple access channel with two energy harvesting transmitters with lossy energy storage. The power allocation policy maximizing the average weighted sum rate given the energy harvesting

  14. Cancer Treatment Using Multiple Chemotheraputic Agents Subject to Drug Resistance

    E-Print Network [OSTI]

    Hanson, Floyd B.

    Cancer Treatment Using Multiple Chemotheraputic Agents Subject to Drug Resistance J. J. Westman-7045 USA Abstract A compartment model for the evolution of cancer subject to multiple chemotherapeutic agents is presented. The formulation accounts for the heterogeneous nature of cancer and drug resistance

  15. Bioinformatics Workshop #1 A Brief Introduction to Multiple Sequence

    E-Print Network [OSTI]

    Ronquist, Fredrik

    Bioinformatics Workshop #1 A Brief Introduction to Multiple Sequence Analysis through GCG's SeqLab The SeqLab Graphical User Interface (GUI) is a `front-end' to the Wisconsin Sequence Analysis Package GCG programs and is a great way to develop, refine, and analyze multiple sequence alignments. So what

  16. Techniques for Low Jitter Clock Multiplication Belal Moheedin Helal

    E-Print Network [OSTI]

    Perrott, Michael

    Techniques for Low Jitter Clock Multiplication by Belal Moheedin Helal Bachelor of Science and Computer Science Updated On-Line Version #12;2 #12;Techniques for Low Jitter Clock Multiplication by Belal-Locked Loops (MDLL), offer significantly reduced random jitter compared to typical Phase-Locked Loops (PLL

  17. Electricity and Magnetism, PHYS 350 Problem set 5: 1. Problem 5.31 (5.30).

    E-Print Network [OSTI]

    Lovejoy, Shaun

    power from flow of ionized plasma, e.g., in nuclear fusion reactors. The plasma flows in the z direction. Problem 6.25 (6.23). E5. Problem (7.16). E6. Problem 7.18 (7.18). (Numbers from Griffiths book 4th edition

  18. A close look at auxiliary problem principles for equilibria

    E-Print Network [OSTI]

    2014-12-01T23:59:59.000Z

    Dec 1, 2014 ... [7] Fukushima M. Equivalent differentiable optimization problems and descent methods for asymmetric variational inequality problems.

  19. Control of Multiple Robotic Sentry Vehicles

    SciTech Connect (OSTI)

    Feddema, J.; Klarer, P.; Lewis, C.

    1999-04-01T23:59:59.000Z

    As part of a project for the Defense Advanced Research Projects Agency, Sandia National Laboratories is developing and testing the feasibility of using of a cooperative team of robotic sentry vehicles to guard a perimeter and to perform surround and diversion tasks. This paper describes on-going activities in the development of these robotic sentry vehicles. To date, we have developed a robotic perimeter detection system which consists of eight ''Roving All Terrain Lunar Explorer Rover'' (RATLER{trademark}) vehicles, a laptop-based base-station, and several Miniature Intrusion Detection Sensors (MIDS). A radio frequency receiver on each of the RATLER vehicles alerts the sentry vehicles of alarms from the hidden MIDS. When an alarm is received, each vehicle decides whether it should investigate the alarm based on the proximity of itself and the other vehicles to the alarm. As one vehicle attends an alarm, the other vehicles adjust their position around the perimeter to better prepare for another alarm. We have also demonstrated the ability to drive multiple vehicles in formation via tele-operation or by waypoint GPS navigation. This is currently being extended to include mission planning capabilities. At the base-station, the operator can draw on an aerial map the goal regions to be surrounded and the repulsive regions to be avoided. A potential field path planner automatically generates a path from the vehicles' current position to the goal regions while avoiding the repulsive regions and the other vehicles. This path is previewed to the operator before the regions are downloaded to the vehicles. The same potential field path planner resides on the vehicle, except additional repulsive forces from on-board proximity sensors guide the vehicle away from unplanned obstacles.

  20. The Multiple Zeta Value Data Mine

    E-Print Network [OSTI]

    J. Blümlein; D. J. Broadhurst; J. A. M. Vermaseren

    2009-11-14T23:59:59.000Z

    We provide a data mine of proven results for multiple zeta values (MZVs) of the form $\\zeta(s_1,s_2,...,s_k)=\\sum_{n_1>n_2>...>n_k>0}^\\infty \\{1/(n_1^{s_1} >... n_k^{s_k})\\}$ with weight $w=\\sum_{i=1}^k s_i$ and depth $k$ and for Euler sums of the form $\\sum_{n_1>n_2>...>n_k>0}^\\infty t\\{(\\epsilon_1^{n_1} >...\\epsilon_1 ^{n_k})/ (n_1^{s_1} ... n_k^{s_k}) \\}$ with signs $\\epsilon_i=\\pm1$. Notably, we achieve explicit proven reductions of all MZVs with weights $w\\le22$, and all Euler sums with weights $w\\le12$, to bases whose dimensions, bigraded by weight and depth, have sizes in precise agreement with the Broadhurst--Kreimer and Broadhurst conjectures. Moreover, we lend further support to these conjectures by studying even greater weights ($w\\le30$), using modular arithmetic. To obtain these results we derive a new type of relation for Euler sums, the Generalized Doubling Relations. We elucidate the "pushdown" mechanism, whereby the ornate enumeration of primitive MZVs, by weight and depth, is reconciled with the far simpler enumeration of primitive Euler sums. There is some evidence that this pushdown mechanism finds its origin in doubling relations. We hope that our data mine, obtained by exploiting the unique power of the computer algebra language {\\sc form}, will enable the study of many more such consequences of the double-shuffle algebra of MZVs, and their Euler cousins, which are already the subject of keen interest, to practitioners of quantum field theory, and to mathematicians alike.

  1. Multiple anatomy optimization of accumulated dose

    SciTech Connect (OSTI)

    Watkins, W. Tyler, E-mail: watkinswt@virginia.edu; Siebers, Jeffrey V. [Department of Radiation Oncology, University of Virginia, Charlottesville, Virginia 22908 and Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298 (United States); Moore, Joseph A. [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University, Baltimore, Maryland 21231 and Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298 (United States); Gordon, James [Henry Ford Health System, Detroit, Michigan 48202 and Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298 (United States); Hugo, Geoffrey D. [Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298 (United States)

    2014-11-01T23:59:59.000Z

    Purpose: To investigate the potential advantages of multiple anatomy optimization (MAO) for lung cancer radiation therapy compared to the internal target volume (ITV) approach. Methods: MAO aims to optimize a single fluence to be delivered under free-breathing conditions such that the accumulated dose meets the plan objectives, where accumulated dose is defined as the sum of deformably mapped doses computed on each phase of a single four dimensional computed tomography (4DCT) dataset. Phantom and patient simulation studies were carried out to investigate potential advantages of MAO compared to ITV planning. Through simulated delivery of the ITV- and MAO-plans, target dose variations were also investigated. Results: By optimizing the accumulated dose, MAO shows the potential to ensure dose to the moving target meets plan objectives while simultaneously reducing dose to organs at risk (OARs) compared with ITV planning. While consistently superior to the ITV approach, MAO resulted in equivalent OAR dosimetry at planning objective dose levels to within 2% volume in 14/30 plans and to within 3% volume in 19/30 plans for each lung V20, esophagus V25, and heart V30. Despite large variations in per-fraction respiratory phase weights in simulated deliveries at high dose rates (e.g., treating 4/10 phases during single fraction beams) the cumulative clinical target volume (CTV) dose after 30 fractions and per-fraction dose were constant independent of planning technique. In one case considered, however, per-phase CTV dose varied from 74% to 117% of prescription implying the level of ITV-dose heterogeneity may not be appropriate with conventional, free-breathing delivery. Conclusions: MAO incorporates 4DCT information in an optimized dose distribution and can achieve a superior plan in terms of accumulated dose to the moving target and OAR sparing compared to ITV-plans. An appropriate level of dose heterogeneity in MAO plans must be further investigated.

  2. Mitigating PQ Problems in Legacy Data Centers

    SciTech Connect (OSTI)

    Ilinets, Boris; /SLAC

    2011-06-01T23:59:59.000Z

    The conclusions of this presentation are: (1) Problems with PQ in legacy data centers still exist and need to be mitigated; (2) Harmonics generated by non-linear IT load can be lowered by passive, active and hybrid cancellation methods; (3) Harmonic study is necessary to find the best way to treat PQ problems; (4) AHF's and harmonic cancellation transformers proved to be very efficient in mitigating PQ problems; and (5) It is important that IT leaders partner with electrical engineering to appropriate ROI statements, justifying many of these expenditures.

  3. Simulating variable source problems via post processing of individual particle tallies

    SciTech Connect (OSTI)

    Bleuel, D.L.; Donahue, R.J.; Ludewigt, B.A.; Vujic, J.

    2000-10-20T23:59:59.000Z

    Monte Carlo is an extremely powerful method of simulating complex, three dimensional environments without excessive problem simplification. However, it is often time consuming to simulate models in which the source can be highly varied. Similarly difficult are optimization studies involving sources in which many input parameters are variable, such as particle energy, angle, and spatial distribution. Such studies are often approached using brute force methods or intelligent guesswork. One field in which these problems are often encountered is accelerator-driven Boron Neutron Capture Therapy (BNCT) for the treatment of cancers. Solving the reverse problem of determining the best neutron source for optimal BNCT treatment can be accomplished by separating the time-consuming particle-tracking process of a full Monte Carlo simulation from the calculation of the source weighting factors which is typically performed at the beginning of a Monte Carlo simulation. By post-processing these weighting factors on a recorded file of individual particle tally information, the effect of changing source variables can be realized in a matter of seconds, instead of requiring hours or days for additional complete simulations. By intelligent source biasing, any number of different source distributions can be calculated quickly from a single Monte Carlo simulation. The source description can be treated as variable and the effect of changing multiple interdependent source variables on the problem's solution can be determined. Though the focus of this study is on BNCT applications, this procedure may be applicable to any problem that involves a variable source.

  4. The Origins of Extinction

    E-Print Network [OSTI]

    Petryna, Adriana

    2013-01-01T23:59:59.000Z

    services' : [ {'service': 'facebook', 'id': 'pages/loading AddThis Sharing Facebook Twitter Email More OptionsAddThis Privacy Follow Hide Facebook Twitter Show AddThis

  5. The Noise of the World: The Apocalypse and the Crazy Farm Scenario

    E-Print Network [OSTI]

    Houdart, Sophie

    2013-01-01T23:59:59.000Z

    AddThis Privacy Follow Hide Facebook Twitter Show AddThisWhat's Next Follow on Facebook AddThis Hide Show Followservices' : [ {'service': 'facebook', 'id': 'pages/

  6. Geospatial | Department of Energy

    Office of Environmental Management (EM)

    Geospatial Geospatial June 27, 2011 - 3:20pm Addthis Addthis Related Articles Geospatial Science Program Bioenergy Knowledge Discovery Framework Recognized at National Conference...

  7. Nonlinear boundary value problem of magnetic insulation

    E-Print Network [OSTI]

    A. V. Sinitsyn

    2000-09-09T23:59:59.000Z

    On the basis of generalization of upper and lower solution method to the singular two point boundary value problems, the existence theorem of solutions for the system, which models a process of magnetic insulation in plasma is proved.

  8. Artificial Intelligence Problem Solving and Search

    E-Print Network [OSTI]

    Srinivasan, Padmini

    . Artificial Intelligence ­ p.1/89 #12;Example: Romania Problem: On holiday in Romania; currently in Arad, Fagaras, Bucharest Artificial Intelligence ­ p.2/89 #12;Example: Romania Giurgiu Urziceni Hirsova Eforie

  9. Artificial Intelligence Problem Solving and Search

    E-Print Network [OSTI]

    Srinivasan, Padmini

    . Artificial Intelligence ­ p.1/89 Example: Romania Problem: On holiday in Romania; currently in Arad. Flight, Bucharest Artificial Intelligence ­ p.2/89 Example: Romania Giurgiu Urziceni Hirsova Eforie Neamt Oradea

  10. THE PLANAR HUB LOCATION PROBLEM: A PROBABILISTIC ...

    E-Print Network [OSTI]

    2012-11-21T23:59:59.000Z

    Nov 5, 2012 ... Aykin and Brown, [4]. ...... [8] J.F. Campbell, Integer programming formulations of discrete hub location problems, European J. of O.R.. 72(1994) ...

  11. Inclusion problems for one-counter systems 

    E-Print Network [OSTI]

    Totzke, Patrick

    2014-11-27T23:59:59.000Z

    We study the decidability and complexity of verification problems for infinite-state systems. A fundamental question in formal verification is if the behaviour of one process is reproducible by another. This inclusion ...

  12. The Complexity of the Local Hamiltonian Problem

    E-Print Network [OSTI]

    Julia Kempe; Alexei Kitaev; Oded Regev

    2005-10-02T23:59:59.000Z

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

  13. Generalized spectral decomposition for stochastic nonlinear problems

    SciTech Connect (OSTI)

    Nouy, Anthony [Research Institute in Civil Engineering and Mechanics (GeM), Nantes Atlantic University, Ecole Centrale Nantes, UMR CNRS 6183, 2 rue de la Houssiniere, B.P. 92208, 44322 Nantes Cedex 3 (France)], E-mail: anthony.nouy@univ-nantes.fr; Le Maitre, Olivier P. [LIMSI-CNRS, BP133, F-91403 Orsay (France); DEN/DM2S/SFME, Centre d'Etudes Nucleaires, Saclay (France)], E-mail: olm@limsi.fr

    2009-01-10T23:59:59.000Z

    We present an extension of the generalized spectral decomposition method for the resolution of nonlinear stochastic problems. The method consists in the construction of a reduced basis approximation of the Galerkin solution and is independent of the stochastic discretization selected (polynomial chaos, stochastic multi-element or multi-wavelets). Two algorithms are proposed for the sequential construction of the successive generalized spectral modes. They involve decoupled resolutions of a series of deterministic and low-dimensional stochastic problems. Compared to the classical Galerkin method, the algorithms allow for significant computational savings and require minor adaptations of the deterministic codes. The methodology is detailed and tested on two model problems, the one-dimensional steady viscous Burgers equation and a two-dimensional nonlinear diffusion problem. These examples demonstrate the effectiveness of the proposed algorithms which exhibit convergence rates with the number of modes essentially dependent on the spectrum of the stochastic solution but independent of the dimension of the stochastic approximation space.

  14. The Monty Hall Problem Afra Zomorodian

    E-Print Network [OSTI]

    Zomorodian, Afra

    The Monty Hall Problem's origin is from the TV show, "Let's Make A Deal" hosted by Monty Hall. The statement curtain but before the curtain is lifted, the emcee lifts one of the other curtains, revealing an empty

  15. The Monty Hall Problem Afra Zomorodian

    E-Print Network [OSTI]

    Zomorodian, Afra

    The Monty Hall Problem's origin is from the TV show, ``Let's Make A Deal'' hosted by Monty Hall have picked one curtain but before the curtain is lifted, the emcee lifts one of the other curtains

  16. Combinatorial optimization problems with concave costs

    E-Print Network [OSTI]

    Stratila, Dan

    2009-01-01T23:59:59.000Z

    In the first part, we study the problem of minimizing a separable concave function over a polyhedron. We assume the concave functions are nonnegative nondecreasing on R+, and the polyhedron is in RI' (these assumptions can ...

  17. Regenerator Location Problem in Flexible Optical Networks

    E-Print Network [OSTI]

    2014-11-22T23:59:59.000Z

    Alone in US, a 1% saving in the energy consumption of Internet ..... Pricing Problem: Let RPS be the restricted PS-LP formulation with a fraction of its columns. At.

  18. Delaware Transportation Infrastructure Forum Problem Identification Statements

    E-Print Network [OSTI]

    Firestone, Jeremy

    2013 Delaware Transportation Infrastructure Forum Problem Identification Statements Sponsored by The Delaware Center for Transportation and the Delaware Department of Transportation Delaware Center for Transportation Your main resource for transportation education and research Identifying Important Issues Related

  19. The Vehicle Platooning Problem - Optimization Online

    E-Print Network [OSTI]

    2014-10-22T23:59:59.000Z

    truck in a platoon has a fuel cost of only c(T) · ?, owing to a reduction in air ...... T. Bektas, and G. Laporte, “The Time-Dependent Pollution-Routing Problem,”.

  20. Modeling the black hole excision problem

    SciTech Connect (OSTI)

    Szilagyi, B.; Winicour, J. [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Albert Einstein Institute, Max Planck Gesellschaft, Am Muehlenberg 1, D-14476 Golm (Germany); Kreiss, H.-O. [Albert Einstein Institute, Max Planck Gesellschaft, Am Muehlenberg 1, D-14476 Golm (Germany); NADA, Royal Institute of Technology, 10044 Stockholm (Sweden)

    2005-05-15T23:59:59.000Z

    We analyze the excision strategy for simulating black holes. The problem is modeled by the propagation of quasilinear waves in a 1-dimensional spatial region with timelike outer boundary, spacelike inner boundary and a horizon in between. Proofs of well-posed evolution and boundary algorithms for a second differential order treatment of the system are given for the separate pieces underlying the finite-difference problem. These are implemented in a numerical code which gives accurate long term simulations of the quasilinear excision problem. Excitation of long wavelength exponential modes, which are latent in the problem, are suppressed using conservation laws for the discretized system. The techniques are designed to apply directly to recent codes for the Einstein equations based upon the harmonic formulation.

  1. Commissioning to avoid indoor air quality problems

    SciTech Connect (OSTI)

    Sterling, E.M.; Collett, C.W. (Theodore D. Sterling and Associates, Ltd., Vancouver, British Columbia (Canada)); Turner, S. (Healthy Buildings International Inc., Fairfax, VA (United States)); Downing, C.C. (Environmental Science and Technology Lab., Georgia Technology Research Inst., Atlanta, GA (United States))

    1992-10-01T23:59:59.000Z

    This paper reports on indoor air quality (IAQ) which has become a pervasive problem plaguing the building industry worldwide. Poor IAQ in commercial and office buildings is primarily related to new building technology, new materials and equipment and energy management operating systems. Occupants of buildings with air quality problems suffer from a common series of symptoms. As early as 1982, ASHRAE, realizing the significance of the problem, produced an IAQ position statement that identified strategies for solving IAQ problems. Many of those strategies have now been implemented, including Standard 62-1989, Ventilation for Acceptable Air Quality; Standard 90.1, Energy Efficient Design of New Buildings Except Low-Rise Residential Buildings; the 100 series of energy standards; and Guideline 1, Guideline for Commissioning of HVAC Systems.

  2. Lamb’s problem at its simplest

    E-Print Network [OSTI]

    Kausel, Eduardo A.

    This article revisits the classical problem of horizontal and vertical point loads suddenly applied onto the surface of a homogeneous, elastic half-space, and provides a complete set of exact, explicit formulae which are ...

  3. The cooperative orienteering problem with time windows

    E-Print Network [OSTI]

    2014-06-30T23:59:59.000Z

    Optimisation models are often employed in emergency management and ..... The Tasmanian Fire Service's community protection plans identify various community ... W. Souffriau, D. Van Oudheusden, The orienteering problem: A survey,.

  4. PARABOLIC OBSTACLE PROBLEMS APPLIED TO FINANCE A ...

    E-Print Network [OSTI]

    2006-03-07T23:59:59.000Z

    1. Introduction. 1.1. Background. The parabolic obstacle problem refers to finding the smallest supper-solution (for a given parabolic ... H. Shahgholian is supported by Swedish Research Council. 1 ...... MR MR2052937 (2005d:35276). [BD97].

  5. How to Deal with California's Budget Problem

    E-Print Network [OSTI]

    Gage, Tim

    2009-01-01T23:59:59.000Z

    to ?nish balancing this year’s budget and next year’s at theto Deal with California’s Budget Problem Tim Gage* The Bluefall precipitously. While the budget could have been better

  6. On Solving the Coronal Heating Problem

    E-Print Network [OSTI]

    James A. Klimchuk

    2006-03-09T23:59:59.000Z

    This article assesses the current state of understanding of coronal heating, outlines the key elements of a comprehensive strategy for solving the problem, and warns of obstacles that must be overcome along the way.

  7. Multiple pass and multiple layer friction stir welding and material enhancement processes

    DOE Patents [OSTI]

    Feng, Zhili (Knoxville, TN) [Knoxville, TN; David, Stan A. (Knoxville, TN) [Knoxville, TN; Frederick, David Alan (Harriman, TN) [Harriman, TN

    2010-07-27T23:59:59.000Z

    Processes for friction stir welding, typically for comparatively thick plate materials using multiple passes and multiple layers of a friction stir welding tool. In some embodiments a first portion of a fabrication preform and a second portion of the fabrication preform are placed adjacent to each other to form a joint, and there may be a groove adjacent the joint. The joint is welded and then, where a groove exists, a filler may be disposed in the groove, and the seams between the filler and the first and second portions of the fabrication preform may be friction stir welded. In some embodiments two portions of a fabrication preform are abutted to form a joint, where the joint may, for example, be a lap joint, a bevel joint or a butt joint. In some embodiments a plurality of passes of a friction stir welding tool may be used, with some passes welding from one side of a fabrication preform and other passes welding from the other side of the fabrication preform.

  8. Diffusion Preconditioner for Discontinuous Galerkin Transport Problems

    E-Print Network [OSTI]

    Barbu, Anthony Petru

    2011-08-08T23:59:59.000Z

    DIFFUSION PRECONDITIONER FOR DISCONTINUOUS GALERKIN TRANSPORT PROBLEMS A Thesis by ANTHONY PETRU BARBU Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER... OF SCIENCE May 2011 Major Subject: Nuclear Engineering DIFFUSION PRECONDITIONER FOR DISCONTINUOUS GALERKIN TRANSPORT PROBLEMS A Thesis by ANTHONY PETRU BARBU Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment...

  9. The multi-stop aircraft routing problem

    E-Print Network [OSTI]

    Garci?a Castan?eda, Salvador

    1995-01-01T23:59:59.000Z

    Approved as to style and content by: Alberto Garcia-Diaz (Chair of Committee) Ce O. ave em ) Ta-Hsin Li (Member) ay Kuo (Head of Departement) December 1995 Major Subject: Industrial Engineering ABSTRACT The Multi-Stop Aircraft Routing Problem.... (December 1995) Salvador Garcia, B. S. , Nuevo Leon State University; M. S. , Monterrey Tech Chair of Advisory Committee: Dr. Alberto Garcia-Diaz We study the multi-stop aircrafi routing problem, determining the sequence of stops and the number...

  10. Toward a solution of the coincidence problem

    SciTech Connect (OSTI)

    Campo, Sergio del; Herrera, Ramon [Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Avenida Brasil 2950, Casilla 4059, Valparaiso (Chile); Pavon, Diego [Departamento de Fisica, Facultad de Ciencias, Universidad Autonoma de Barcelona, 08193 Bellaterra, Barcelona (Spain)

    2008-07-15T23:59:59.000Z

    The coincidence problem of late cosmic acceleration constitutes a serious riddle with regard to our understanding of the evolution of the Universe. Here we argue that this problem may someday be solved - or better understood - by expressing the Hubble expansion rate as a function of the ratio of densities (dark matter/dark energy) and observationally determining the said rate in terms of the redshift.

  11. Integer programming models for the branchwidth problem

    E-Print Network [OSTI]

    Ulusal, Elif

    2008-10-10T23:59:59.000Z

    and undirected graphs and presented a randomized algorithm for the element disjoint STPP. In 2007, Lau presented a polynomial time constant factor approximation algorithm for the edge-disjoint STPP. The minimum multicast congestion problem is a generalization... tree packing problem. The third formulation is based on the notion of laminar separations. We utilize upper and lower bounds obtained by heuristic algorithms, reduction techniques and cutting planes to increase the efficiency of our models. We use all...

  12. An optimal replacement problem in aluminum production

    E-Print Network [OSTI]

    Spanks, Lisa Marie

    1992-01-01T23:59:59.000Z

    AN OPTIMAL REPLACEMENT PROBLEM IN ALUMINUM PRODUCTION Thesis by LISA MARIE SPANKS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1992... Major Subject: Industrial Engineering AN OPTIMAL REPLACEMENT PROBLEM IN ALUMINUM PRODUCTION Thesis by LISA MARIE SPANKS Approved as to style and content by: Richard M. Feldman (Chair of Committee) James H. Matis (Member) ryan L. Deuermey r...

  13. Multiple horizontal drainholes can improve production

    SciTech Connect (OSTI)

    Graves, K.S. (Baker Hughes Inteq, Houston, TX (United States))

    1994-02-14T23:59:59.000Z

    Drilling several horizontal sections from a single vertical well bore has improved the drilling and production economics on many wells, especially in South Texas, where multilateral wells are becoming more common. A multilateral well consists of two or more horizontal drainholes drilled from one primary vertical well bore, either as a new well or as a re-entry. There are a number of advantages to drilling multilateral drainholes. Multilateral drainholes reduce drilling costs because only one main vertical bore is drilled (reduces drilling time and wellhead and casing costs). Of primary importance is the increased well production compared to similar single horizontal wells and vertical wells. The use of a single vertical well bore minimizes location, access road, and cleanup costs. Fewer surface production facilities may be necessary, and offshore, increasing the drainage area for a fixed number of well slots gives greater platform flexibility and allows more extensive field development. One disadvantage, however, is the potential complications during well control because two or more well bores are open. Also, the ability to service a particular well bore is more complex. To prevent future well bore service problems, each drainhole must be designed for later re-entry.

  14. Geological problems in radioactive waste isolation

    SciTech Connect (OSTI)

    Witherspoon, P.A. (ed.)

    1991-01-01T23:59:59.000Z

    The problem of isolating radioactive wastes from the biosphere presents specialists in the fields of earth sciences with some of the most complicated problems they have ever encountered. This is especially true for high level waste (HLW) which must be isolated in the underground and away from the biosphere for thousands of years. Essentially every country that is generating electricity in nuclear power plants is faced with the problem of isolating the radioactive wastes that are produced. The general consensus is that this can be accomplished by selecting an appropriate geologic setting and carefully designing the rock repository. Much new technology is being developed to solve the problems that have been raised and there is a continuing need to publish the results of new developments for the benefit of all concerned. The 28th International Geologic Congress that was held July 9--19, 1989 in Washington, DC provided an opportunity for earth scientists to gather for detailed discussions on these problems. Workshop W3B on the subject, Geological Problems in Radioactive Waste Isolation -- A World Wide Review'' was organized by Paul A Witherspoon and Ghislain de Marsily and convened July 15--16, 1989 Reports from 19 countries have been gathered for this publication. Individual papers have been cataloged separately.

  15. Industrial waste reduction: The process problem

    SciTech Connect (OSTI)

    Valentino, F.W.; Walmet, G.E.

    1986-09-01T23:59:59.000Z

    Industrial waste problems, especially those involving hazardous waste, seem to be pervasive. The national media report newly discovered waste problems and sites with alarming regularity. Examples that immediately come to mind are Love Canal, New York; Times Beach, Missouri; and Seveso, Italy. Public perceptions of the industrial waste problem, reflecting the media's focus, appear to be that: large corporations are solely responsible for creating waste dumps, and the only role of government is to prevent illegal dumping and to regulate, fine, and require corporations to rectify the problem; all efforts should be directed toward preventing illegal dumping and treatment of the existing waste dumps; all industrial wastes can be classified as hazardous in nature. This general impression is both inaccurate and incomplete. All industrial waste is not hazardous (although most of it is not benign). All waste producers are not large corporations: nearly all industries produce some wastes. And, while existing waste sites must be effectively treated, additional efforts are needed at other points in the industrial waste cycle. Most people would agree both that waste dumping must be carefully regulated because of its negative impacts on the environment and that the less waste the better, even with carefully regulated disposal. Since nearly all industry now produces some waste and no one expects industry to shut down to resolve the waste problem, other strategies need to be available to deal with the problem at the front end. This paper discusses alternative strategies.

  16. Structure analysis of single- and multi-frequency subspace migrations in inverse scattering problems

    E-Print Network [OSTI]

    Young Deuk Jo; Young Mi Kwon; Joo Young Huh; Won-Kwang Park

    2013-01-09T23:59:59.000Z

    In this literature, we carefully investigate the structure of single- and multi-frequency imaging functions, that are usually employed in inverse scattering problems. Based on patterns of the singular vectors of the Multi-Static Response (MSR) matrix, we establish a relationship between imaging functions and the Bessel function. This relationship indicates certain properties of imaging functions and the reason behind enhancement in the imaging performance by multiple frequencies. Several numerical simulations with a large amount of noisy data are performed in order to support our investigation.

  17. A dressing of zero-range potentials and electron-molecule scattering problem at low energies

    E-Print Network [OSTI]

    S. B. Leble; S. Yalunin

    2002-10-18T23:59:59.000Z

    A dressing of a nonspherical potential, which includes $n$ zero range potentials, is considered. The dressing technique is used to improve ZRP model. Concepts of the partial waves and partial phases for non-spherical potential are used in order to perform Darboux transformation. The problem of scattering on the regular $\\hbox{X}_n$ and $\\hbox{YX}_n$ structures is studied. The possibilities of dressed ZRP are illustrated by model calculation of the low-energy electron-Silane ($\\hbox{SiH}_4$) scattering. The results are discussed. Key words: multiple scattering, silane, zero range potential.

  18. Numerical Results on Low Mass Star and Brown Dwarf Multiplicity

    E-Print Network [OSTI]

    Eduardo Delgado-Donate; Cathie Clarke

    2004-12-17T23:59:59.000Z

    We have undertaken a series of hydrodynamic + N-body simulations in order to explore the properties of young stars. Our results suggest that the IMF may be sensitive to environment in its substellar region, with more brown dwarfs being formed where clusters are denser or more compact. We find that multiple stars are a natural outcome of collapsing turbulent flows, with a high incidence of N > 2 multiples. We find a positive correlation of multiplicity with primary mass but a companion frequency that decreases with age. Binary brown dwarfs are rarely formed, in conflict with observations. Brown dwarfs as companions are predominantly found orbiting binaries or triples at large separations.

  19. Stator for a rotating electrical machine having multiple control windings

    DOE Patents [OSTI]

    Shah, Manoj R. (Latham, NY); Lewandowski, Chad R. (Amsterdam, NY)

    2001-07-17T23:59:59.000Z

    A rotating electric machine is provided which includes multiple independent control windings for compensating for rotor imbalances and for levitating/centering the rotor. The multiple independent control windings are placed at different axial locations along the rotor to oppose forces created by imbalances at different axial locations along the rotor. The multiple control windings can also be used to levitate/center the rotor with a relatively small magnetic field per unit area since the rotor and/or the main power winding provides the bias field.

  20. Studies of multiplicity in relativistic heavy-ion collisions

    E-Print Network [OSTI]

    B. B. Back

    2004-11-29T23:59:59.000Z

    In this talk I'll review the present status of charged particle multiplicity measurements from heavy-ion collisions. The characteristic features of multiplicity distributions obtained in Au+Au collisions will be discussed in terms of collision centrality and energy and compared to those of p+p collisions. Multiplicity measurements of d+Au collisions at 200 GeV nucleon-nucleon center-of-mass energy will also be discussed. The results will be compared to various theoretical models and simple scaling properties of the data will be identified.

  1. High Multiplicity Searches at the LHC Using Jet Masses

    SciTech Connect (OSTI)

    Hook, Anson; /SLAC /Stanford U., Appl. Phys. Dept.; Izaguirre, Eder; /SLAC /Stanford U., Phys. Dept.; Lisanti, Mariangela; /Princeton U.; Wacker, Jay G.; /SLAC /Stanford U., ITP

    2012-04-24T23:59:59.000Z

    This article introduces a new class of searches for physics beyond the Standard Model that improves the sensitivity to signals with high jet multiplicity. The proposed searches gain access to high multiplicity signals by reclustering events into large-radius, or 'fat', jets and by requiring that each event has multiple massive jets. This technique is applied to supersymmetric scenarios in which gluinos are pair-produced and then subsequently decay to final states with either moderate quantities of missing energy or final states without missing energy. In each of these scenarios, the use of jet mass improves the estimated reach in gluino mass by 20% to 50% over current LHC searches.

  2. Discovering structure of data to create multiple perspective visualization

    E-Print Network [OSTI]

    Li, Yao, 1978-

    2004-01-01T23:59:59.000Z

    The goal of visualization is to help human understand, reason, and learn better and quicker. In pursuit of this goal, this thesis presents an architecture for intelligent visualization systems, which supports multiple ...

  3. Low-multiplicity Burst Search at the Sudbury Neutrino Observatory

    E-Print Network [OSTI]

    Chen, Min

    Results are reported from a search for low-multiplicity neutrino bursts in the Sudbury Neutrino Observatory. Such bursts could indicate the detection of a nearby core-collapse supernova explosion. The data were taken from ...

  4. Sourcelevel Debugging for Multiple Languages With Modest Programming Effort

    E-Print Network [OSTI]

    Ramsey, Norman

    Source­level Debugging for Multiple Languages With Modest Programming Effort Sukyoung Ryu present techniques that enable source­level debugging for multi­ ple languages at the cost of only modest

  5. Addressing the challenges of families with multiple risks

    E-Print Network [OSTI]

    Hanson, Marci J.; Carta, Judith J.

    1995-01-01T23:59:59.000Z

    For a significant segment of the population, the challenges faced by families are multiple and constitute risks for the children and other family members. The changing structures and characteristics of the American family are reviewed...

  6. Identification of critical locations across multiple infrastructures for terrorist actions

    E-Print Network [OSTI]

    Patterson, Sean A. (Sean Albert), 1981-

    2005-01-01T23:59:59.000Z

    This paper discusses a possible approach to ranking geographic regions that can influence multiple infrastructures. Once ranked, decision makers can determine whether these regions are critical locations based on their ...

  7. Multiplexed photography : single-exposure capture of multiple camera settings

    E-Print Network [OSTI]

    Green, Paul Elijah

    2009-01-01T23:59:59.000Z

    The space of camera settings is large and individual settings can vary dramatically from scene to scene. This thesis explores methods for capturing and manipulating multiple camera settings in a single exposure. Multiplexing ...

  8. Orientation Estimation for Multiple Large Fractures by Scattering Energy

    E-Print Network [OSTI]

    Zhang, Yang

    2006-01-01T23:59:59.000Z

    We have done the numerical modeling of seismic response to multiple sets of vertical large fractures by using finite-difference method (FD), which can easily handle media with monoclinic anisotropy. We consider three types ...

  9. TPA Code of Honor Guidelines Multiple Subject Credential Program

    E-Print Network [OSTI]

    de Lijser, Peter

    8/10 TPA Code of Honor Guidelines Multiple Subject Credential Program California State University, Fullerton The California TPA involves a series of take-home tasks that measure a teacher candidate's ability

  10. CONSENSUS SEEKING, FORMATION KEEPING, AND TRAJECTORY TRACKING IN MULTIPLE VEHICLE

    E-Print Network [OSTI]

    Ren, Wei

    to mobile robots, unmanned air vehicles, autonomous underwater vehicles, satellites, aircraft, spacecraft controllers for fixed wing unmanned air vehicles and nonholonomic mobile robots with velocity and heading rateCONSENSUS SEEKING, FORMATION KEEPING, AND TRAJECTORY TRACKING IN MULTIPLE VEHICLE COOPERATIVE

  11. Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine

    E-Print Network [OSTI]

    Bae, Yoon Hyeok

    2013-04-23T23:59:59.000Z

    In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control...

  12. V-096: Mozilla Thunderbird / SeaMonkey Multiple Vulnerabilities

    Broader source: Energy.gov [DOE]

    A weakness and multiple vulnerabilities have been reported in Mozilla Thunderbird and SeaMonkey, which can be exploited by malicious people to disclose potentially sensitive information, conduct spoofing attacks, bypass certain security restrictions, and compromise a user's system.

  13. A Single-Product Inventory Model for Multiple Demand Classes

    E-Print Network [OSTI]

    Arslan, Hasan

    2005-05-27T23:59:59.000Z

    We consider a single-product inventory system that serves multiple demand classes, which differ in their shortage costs or service level requirements. We assume a critical-level control policy, and show the equivalence ...

  14. Inferring Regulatory Networks from Multiple Sources of Genomic Data

    E-Print Network [OSTI]

    Yeang, Chen-Hsiang

    for the degree of Doctor of Philosophy at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY September 2004 c Massachusetts Institute of Technology, 2004. Author a computational framework of building and validating simple, mechanistic models of gene regulation from multiple

  15. Network Vulnerability to Single, Multiple, and Probabilistic Physical Attacks

    E-Print Network [OSTI]

    Hay, David

    Network Vulnerability to Single, Multiple, and Probabilistic Physical Attacks Pankaj K. Agarwal, swami}@cs.arizona.edu Electrical Engineering, Columbia University. {hdavid, gil}@ee.columbia.edu Abstract--Telecommunications networks heavily rely on the physical infrastructure and, are therefore

  16. Phenomenology of COMPASS data: multiplicities and Phenomenology - part II

    SciTech Connect (OSTI)

    Anselmino, Mauro [TURIN; Boglione, Mariaelena [TURIN; Gonzalez H., J.O. [TORINO; Melis, Stefano [TURIN; Prokudin, Alexey [JLAB

    2015-01-01T23:59:59.000Z

    We present some of the main features of the multidimensional COMPASS multiplicities, via our analysis using the simple Gaussian model. We briefly discuss these results in connection with azimuthal asymmetries.

  17. U-171: DeltaV Products Multiple Vulnerabilities

    Broader source: Energy.gov [DOE]

    Multiple vulnerabilities have been reported in DeltaV products, which can be exploited by malicious people to conduct cross-site scripting attacks, SQL injection attacks, cause a DoS (Denial of Service), and compromise a vulnerable system.

  18. T-574: Google Chrome Multiple Flaws Let Remote Users Execute...

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

    Multiple vulnerabilities were reported in Google Chrome. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can bypass the pop-up...

  19. Multiple frequency electron cyclotron heating for the Levitated Dipole Experiment

    E-Print Network [OSTI]

    Mahar, Scott B

    2005-01-01T23:59:59.000Z

    The use of multiple frequencies of electron cyclotron resonance heating (ECRH) in the Levitated Dipole Experiment (LDX) is an important tool that will tailor the plasma profiles. Initial LDX plasmas have been created using ...

  20. Competitive behavior of airlines at multiple airport systems

    E-Print Network [OSTI]

    Chen, Edmund

    1995-01-01T23:59:59.000Z

    The way passenger traffic is distributed at multiple airport systems continues to intrigue air transportation planners, urban planners, and policy-makers as researchers attempt to unravel how airlines, air travelers and ...

  1. Governance Through Trading and Intervention: A Theory of Multiple Blockholders

    E-Print Network [OSTI]

    Edmans, Alex

    Traditional theories argue that governance is strongest under a single large blockholder, as she has high incentives to undertake value-enhancing interventions. However, most firms are held by multiple small blockholders. ...

  2. Anti-Synchronization in Multiple Time Delay Power Systems

    E-Print Network [OSTI]

    E. M. Shahverdiev

    2010-08-23T23:59:59.000Z

    We investigate chaos antisynchronization between two uni-directionally coupled multiple time delay power systems.The results are of certain importance to prevent power black-out in the entire power grid.

  3. Integrating automobile multiple intelligent warning systems : performance and policy implications

    E-Print Network [OSTI]

    Ho, Angela Wei Ling

    2006-01-01T23:59:59.000Z

    Intelligent driver warning systems can be found in many high-end vehicles on the road today, which will likely rapidly increase as they become standard equipment. However, introducing multiple warning systems into vehicles ...

  4. On the polar cap cascade pair multiplicity of young pulsars

    E-Print Network [OSTI]

    Timokhin, A N

    2015-01-01T23:59:59.000Z

    We study the efficiency of pair production in polar caps of young pulsars under a variety of conditions to estimate the maximum possible multiplicity of pair plasma in pulsar magnetospheres. We develop a semi-analytic model for calculation of cascade multiplicity which allows efficient exploration of the parameter space and corroborate it with direct numerical simulations. Pair creation processes are considered separately from particle acceleration in order to assess different factors affecting cascade efficiency, with acceleration of primary particles described by recent self-consistent non-stationary model of pair cascades. We argue that the most efficient cascades operate in the curvature radiation/synchrotron regime, the maximum multiplicity of pair plasma in pulsar magnetospheres is ~few x 10^5. The multiplicity of pair plasma in magnetospheres of young energetic pulsars weakly depends on the strength of the magnetic field and the radius of curvature of magnetic field lines and has a stronger dependence ...

  5. Climate Determinism Revisited: Multiple Equilibria in a Complex Climate Model

    E-Print Network [OSTI]

    Ferreira, David

    Multiple equilibria in a coupled ocean–atmosphere–sea ice general circulation model (GCM) of an aquaplanet with many degrees of freedom are studied. Three different stable states are found for exactly the same set of ...

  6. Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine 

    E-Print Network [OSTI]

    Bae, Yoon Hyeok

    2013-04-23T23:59:59.000Z

    In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control...

  7. STOMP Subsurface Transport Over Multiple Phases, Version 4.0, User’s Guide

    SciTech Connect (OSTI)

    White, Mark D.; Oostrom, Martinus

    2006-06-09T23:59:59.000Z

    This guide describes the general use, input file formatting, compilation and execution of the STOMP (Subsurface Transport Over Multiple Phases) simulator, a scientific tool for analyzing single and multiple phase subsurface flow and transport. A description of the simulator’s governing equations, constitutive functions and numerical solution algorithms are provided in a companion theory guide. In writing these guides for the STOMP simulator, the authors have assumed that the reader comprehends concepts and theories associated with multiple-phase hydrology, heat transfer, thermodynamics, radioactive chain decay, and relative permeability-saturation-capillary pressure constitutive relations. The authors further assume that the reader is familiar with the computing environment on which they plan to compile and execute the STOMP simulator. Source codes for the sequential versions of the simulator are available in pure FORTRAN 77 or mixed FORTRAN 77/90 forms. The pure FORTRAN 77 source code form requires a parameters file to define the memory requirements for the array elements. The mixed FORTRAN 77/90 form of the source code uses dynamic memory allocation to define memory requirements, based on a FORTRAN 90 preprocessor STEP, that reads the input files. The simulator utilizes a variable source code configuration, which allows the execution memory and speed to be tailored to the problem specifics, and essentially requires that the source code be assembled and compiled through a software maintenance utility. The memory requirements for executing the simulator are dependent on the complexity of physical system to be modeled and the size and dimensionality of the computational domain. Likewise execution speed depends on the problem complexity, size and dimensionality of the computational domain, and computer performance. Selected operational modes of the STOMP simulator are available for scalable execution on multiple processor (i.e., parallel) computers. These versions of the simulator are written in pure FORTRAN 90 with imbedded directives that are interpreted by a FORTRAN preprocessor. Without the preprocessor, the scalable version of the simulator can be executed sequentially on a single processor computer. The scalable versions of the STOMP modes carry the “-Sc” designator on the operational mode name. For example, STOMP-WCS-Sc is the scalable version of the STOMP-WCS (Water-CO2-Salt) mode. A separate mode containing an evaporation model as a boundary condition on the upper surface of the computation domain has also been included. This mode, STOMP-WAE-B (Water-Air-Energy-Barriers) can be viewed as an extension of the STOMP-WAE (Water-Air-Energy) mode. Details of this particular mode are outlined by Ward et al. (2005)(a). STOMP V4.0 includes the reactive transport module ECKEChem (Equilibrium-Conservation-Kinetic Equation Chemistry) for the STOMP-W (Water) and STOMP-WCS (Water-CO2-Salt) modes. For this particular module, the “-R” designator is included in the operational mode name (e.g., STOMP-W-R, STOMP-WCS-R-Sc). This mode is described in detail by White and McGrail (2005)(b). For all operational modes and processor implementations, the memory requirements for executing the simulator are dependent on the complexity of physical system to be modeled and the size and dimensionality of the computational domain. Likewise execution speed depends on the problem complexity, size and dimensionality of the computational domain, and computer performance. Additional information about the simulator can be found on the STOMP webpage: http://stomp.pnl.gov. The website includes an introductory short course with problems ranging from simple one-dimensional saturated flow to complex multiphase system computations.

  8. High mass throughput particle generation using multiple nozzle spraying

    DOE Patents [OSTI]

    Pui, David Y. H. (Plymouth, MN); Chen, Da-Ren (Creve Coeur, MO)

    2009-03-03T23:59:59.000Z

    Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.

  9. On Computing Multiple Solutions of Nonlinear PDEs Without Variational Structure

    E-Print Network [OSTI]

    Wang, Changchun

    2012-07-16T23:59:59.000Z

    ON COMPUTING MULTIPLE SOLUTIONS OF NONLINEAR PDES WITHOUT VARIATIONAL STRUCTURE A Dissertation by CHANGCHUN WANG Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree... of DOCTOR OF PHILOSOPHY May 2012 Major Subject: Mathematics ON COMPUTING MULTIPLE SOLUTIONS OF NONLINEAR PDES WITHOUT VARIATIONAL STRUCTURE A Dissertation by CHANGCHUN WANG Submitted to the O ce of Graduate Studies of Texas A&M University in partial...

  10. Design and Analysis of Flexible Biodiesel Processes with Multiple Feedstocks

    E-Print Network [OSTI]

    Pokoo-Aikins, Grace Amarachukwu

    2011-10-21T23:59:59.000Z

    DESIGN AND ANALYSIS OF FLEXIBLE BIODIESEL PROCESSES WITH MULTIPLE FEEDSTOCKS A Dissertation by GRACE AMARACHUKWU POKOO-AIKINS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY August 2010 Major Subject: Chemical Engineering DESIGN AND ANALYSIS OF FLEXIBLE BIODIESEL PROCESSES WITH MULTIPLE FEEDSTOCKS A Dissertation by GRACE AMARACHUKWU POKOO...

  11. Simple Models of the Protein Folding Problem

    E-Print Network [OSTI]

    Chao Tang

    1999-12-26T23:59:59.000Z

    The protein folding problem has attracted an increasing attention from physicists. The problem has a flavor of statistical mechanics, but possesses the most common feature of most biological problems -- the profound effects of evolution. I will give an introduction to the problem, and then focus on some recent work concerning the so-called ``designability principle''. The designability of a structure is measured by the number of sequences that have that structure as their unique ground state. Structures differ drastically in terms of their designability; highly designable structures emerge with a number of associated sequences much larger than the average. These highly designable structures 1) possess ``proteinlike'' secondary structures and motifs, 2) are thermodynamically more stable, and 3) fold faster than other structures. These results suggest that protein structures are selected in nature because they are readily designed and stable against mutations, and that such selection simultaneously leads to thermodynamic stability and foldability. According to this picture, a key to the protein folding problem is to understand the emergence and the properties of the highly designable structures.

  12. Algorithms for an Unmanned Vehicle Path Planning Problem

    E-Print Network [OSTI]

    Qin, Jianglei

    2013-06-25T23:59:59.000Z

    as possible. The main purpose of this thesis is to address two path planning problems involving a single UV. The two problems we consider are the quota problem and the budget problem. In the quota problem, the vehicle has to visit a sufficient number...

  13. An Algorithm for Fractional Assignment Problems Maiko Shigeno

    E-Print Network [OSTI]

    Yamamoto, Hirosuke

    Optimization, Mathematical Programming, Fractional Programming, Assignment Problems, Approximation Optimality fractional assignment problems which are special cases of 0-1 fractional programming problems. Let G = (I; J assignment problem. In this case, the algorithm proposed in this paper solves the linear assignment problem

  14. Solution to PDEs using radial basis function finite-differences (RBF-FD) on multiple GPUs

    SciTech Connect (OSTI)

    Bollig, Evan F., E-mail: bollig@scs.fsu.edu [Department of Scientific Computing, Florida State University, 400 Dirac Science Library, Tallahassee, FL 32306 (United States); Flyer, Natasha, E-mail: flyer@ucar.edu [Institute for Mathematics Applied to Geosciences, National Center for Atmospheric Research, 1850 Table Mesa Dr., Boulder, CO 80305 (United States)] [Institute for Mathematics Applied to Geosciences, National Center for Atmospheric Research, 1850 Table Mesa Dr., Boulder, CO 80305 (United States); Erlebacher, Gordon, E-mail: gerlebacher@fsu.edu [Department of Scientific Computing, Florida State University, 400 Dirac Science Library, Tallahassee, FL 32306 (United States)] [Department of Scientific Computing, Florida State University, 400 Dirac Science Library, Tallahassee, FL 32306 (United States)

    2012-08-30T23:59:59.000Z

    This paper presents parallelization strategies for the radial basis function-finite difference (RBF-FD) method. As a generalized finite differencing scheme, the RBF-FD method functions without the need for underlying meshes to structure nodes. It offers high-order accuracy approximation and scales as O(N) per time step, with N being with the total number of nodes. To our knowledge, this is the first implementation of the RBF-FD method to leverage GPU accelerators for the solution of PDEs. Additionally, this implementation is the first to span both multiple CPUs and multiple GPUs. OpenCL kernels target the GPUs and inter-processor communication and synchronization is managed by the Message Passing Interface (MPI). We verify our implementation of the RBF-FD method with two hyperbolic PDEs on the sphere, and demonstrate up to 9x speedup on a commodity GPU with unoptimized kernel implementations. On a high performance cluster, the method achieves up to 7x speedup for the maximum problem size of 27,556 nodes.

  15. Solution to the quantum Zermelo navigation problem

    E-Print Network [OSTI]

    Dorje C. Brody; David Meier

    2015-02-19T23:59:59.000Z

    The solution to the problem of finding a time-optimal control Hamiltonian to generate a given unitary gate, in an environment in which there exists an uncontrollable ambient Hamiltonian (e.g., a background field), is obtained. In the classical context, finding the time-optimal way to steer a ship in the presence of a background wind or current is known as the Zermelo navigation problem, whose solution can be obtained by working out geodesic curves on a space equipped with a Randers metric. The solution to the quantum Zermelo problem, which is shown here to take a remarkably simple form, is likewise obtained by finding explicit solutions to the geodesic equations of motion associated with a Randers metric on the space of unitary operators. The result reveals that the optimal control in a sense `goes along with the wind'.

  16. Approximation algorithms for QMA-complete problems

    E-Print Network [OSTI]

    Sevag Gharibian; Julia Kempe

    2011-01-20T23:59:59.000Z

    Approximation algorithms for classical constraint satisfaction problems are one of the main research areas in theoretical computer science. Here we define a natural approximation version of the QMA-complete local Hamiltonian problem and initiate its study. We present two main results. The first shows that a non-trivial approximation ratio can be obtained in the class NP using product states. The second result (which builds on the first one), gives a polynomial time (classical) algorithm providing a similar approximation ratio for dense instances of the problem. The latter result is based on an adaptation of the "exhaustive sampling method" by Arora et al. [J. Comp. Sys. Sci. 58, p.193 (1999)] to the quantum setting, and might be of independent interest.

  17. Instantiation of SMT problems modulo Integers

    E-Print Network [OSTI]

    Echenim, Mnacho

    2010-01-01T23:59:59.000Z

    Many decision procedures for SMT problems rely more or less implicitly on an instantiation of the axioms of the theories under consideration, and differ by making use of the additional properties of each theory, in order to increase efficiency. We present a new technique for devising complete instantiation schemes on SMT problems over a combination of linear arithmetic with another theory T. The method consists in first instantiating the arithmetic part of the formula, and then getting rid of the remaining variables in the problem by using an instantiation strategy which is complete for T. We provide examples evidencing that not only is this technique generic (in the sense that it applies to a wide range of theories) but it is also efficient, even compared to state-of-the-art instantiation schemes for specific theories.

  18. The impact of energy conservation in transport models on the $\\pi^-/\\pi^+$ multiplicity ratio in heavy-ion collisions and the symmetry energy

    E-Print Network [OSTI]

    Cozma, M D

    2014-01-01T23:59:59.000Z

    The charged pion multiplicity ratio in intermediate energy central heavy-ion collisions has been proposed as a suitable observable to constrain the high density dependence of the isovector part of the equation of state, with contradicting results. Using an upgraded version of the T\\"ubingen QMD transport model, which allows the conservation of energy at a local or global level by accounting for the potential energy of hadrons in two-body collisions and leading thus to particle production threshold shifts, we demonstrate that compatible constraints for the symmetry energy stiffness can be extracted from pion multiplicity and elliptic flow observables. Nevertheless, pion multiplicities are proven to be highly sensitive to the yet unknown isovector part of the in-medium $\\Delta$(1232) potential which hinders presently the extraction of meaningful information on the high density dependence of the symmetry energy. A solution to this problem together with the inclusion of contributions presently neglected, such as ...

  19. Transport Test Problems for Hybrid Methods Development

    SciTech Connect (OSTI)

    Shaver, Mark W.; Miller, Erin A.; Wittman, Richard S.; McDonald, Benjamin S.

    2011-12-28T23:59:59.000Z

    This report presents 9 test problems to guide testing and development of hybrid calculations for the ADVANTG code at ORNL. These test cases can be used for comparing different types of radiation transport calculations, as well as for guiding the development of variance reduction methods. Cases are drawn primarily from existing or previous calculations with a preference for cases which include experimental data, or otherwise have results with a high level of confidence, are non-sensitive, and represent problem sets of interest to NA-22.

  20. Global optimization for the phase stability problem

    SciTech Connect (OSTI)

    Floudas, C.; McDonald, C.

    1994-12-31T23:59:59.000Z

    The Gibbs tangent plane criterion is an important tool in determining the quality of obtained solutions to the phase and chemical equilibrium problem. The ability to determine if a postulated solution is thermodynamically stable is very useful in the search for the equilibrium solution. In this work simpler formulations are presented for the phase stability problem where non-ideal liquid phases are modeled using the NRTL and UNIQUAC models. It is shown how the global minimum of the tangent plane distance function can be obtained. Computational results demonstrate the efficiency of the proposed global optimization algorithms.

  1. The Vacuum and the Cosmological Constant Problem

    E-Print Network [OSTI]

    Gerald E. Marsh

    2008-06-20T23:59:59.000Z

    It will be argued here that the cosmological constant problem exists because of the way the vacuum is defined in quantum field theory. It has been known for some time that for QFT to be gauge invariant certain terms--such as part of the vacuum polarization tensor--must be eliminated either explicitly or by some form of regularization followed by renormalization. It has recently been shown that lack of gauge invariance is a result of the way the vacuum is defined, and redefining the vacuum so that the theory is gauge invariant may also offer a solution to the cosmological constant problem.

  2. NP-complete Problems and Physical Reality

    E-Print Network [OSTI]

    Scott Aaronson

    2005-02-21T23:59:59.000Z

    Can NP-complete problems be solved efficiently in the physical universe? I survey proposals including soap bubbles, protein folding, quantum computing, quantum advice, quantum adiabatic algorithms, quantum-mechanical nonlinearities, hidden variables, relativistic time dilation, analog computing, Malament-Hogarth spacetimes, quantum gravity, closed timelike curves, and "anthropic computing." The section on soap bubbles even includes some "experimental" results. While I do not believe that any of the proposals will let us solve NP-complete problems efficiently, I argue that by studying them, we can learn something not only about computation but also about physics.

  3. Complexity Classification of Local Hamiltonian Problems

    E-Print Network [OSTI]

    Cubitt, Toby; Montanaro, Ashley

    2015-06-02T23:59:59.000Z

    problem S- CSP, where S is a set of constraints, each of which is a boolean function on a fixed number of bits. An instance of the problem is described by a sequence of these constraints, applied to dif- ferent subsets of input bits. The task... particular family of types of constraints, S-CSP is in P; otherwise, S-CSP is NP- complete. This result is particularly remarkable given Ladner’s theorem [2] that, assuming P 6= NP, there must be an infinite hierarchy of complexity classes between P and NP...

  4. AKS systems and Lepage equivalent problems

    E-Print Network [OSTI]

    Santiago Capriotti

    2011-01-06T23:59:59.000Z

    The integrable systems known as "AKS systems" admit a natural formulation in terms of a Hamiltonian picture. The Lagrangian side of these systems are far less known; a version in these terms can be found in a work of Feher et al. The purpose of these notes in to provide a novel description of AKS systems in terms of a variational problem different from the usual in mechanics. Additionally, and using techniques borrowed from an article of M. Gotay, it was possible to build the Hamiltonian side of this variational problem, allowing us to establish the equivalence with the usual approach to these integrable systems.

  5. Florence, 28/02/2011: Two applied inverse problems: Introduction 1 -Problem #1: Studying the protein fold via NMR constraints.

    E-Print Network [OSTI]

    Pedicini, Marco

    the protein fold via NMR constraints. In collaboration with the CERM (Centre for Magnetic Resonance problems. #12;Florence, 28/02/2011: Two applied inverse problems: The problem of protein folding 2 H CCN) Backbone #12;Florence, 28/02/2011: Two applied inverse problems: The problem of protein folding 3 Genoma

  6. Multiple Events Lead to Dendritic Spine Loss in Triple Transgenic Alzheimer's Disease Mice

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    amyloid deposition leads to local synaptic abnormalities andMultiple Events Lead to Dendritic Spine Loss in Tripleal. (2010) Multiple Events Lead to Dendritic Spine Loss in

  7. Defining the Problem Known Environment Unknown Environment Improvements Reinforcement Learning

    E-Print Network [OSTI]

    Kjellström, Hedvig

    Defining the Problem Known Environment Unknown Environment Improvements Reinforcement Learning Bel¨oningsbaserad Inl¨arning Defining the Problem Known Environment Unknown Environment Improvements 1 Defining the Problem Framework Role of Reward Simplifying Assumptions Central Concepts 2 Known Environment Bellmans

  8. Towards Better Approaches To Decision Support in Logistics Problems

    E-Print Network [OSTI]

    Davidson, Ian

    Towards Better Approaches To Decision Support in Logistics Problems Ian Davidson and Ryszard a decision support framework for logistics problems. The research covers methodologies, technologies and software tools. The framework considers typical characteristics of real-world logistics problems, common

  9. Towards Better Approaches To Decision Support in Logistics Problems

    E-Print Network [OSTI]

    Davidson, Ian

    Towards Better Approaches To Decision Support in Logistics Problems Ian Davidson and Ryszard a decision support framework for logistics problems. The research covers methodologies, technologies and software tools. The framework considers typical characteristics of real­world logistics problems, common

  10. Party Problems and Ramsey Theory 1 Problems Pertaining to People at Parties

    E-Print Network [OSTI]

    Do, Norman

    that parties with enough people do possess this property. How many people do you need at a party to guarantee many people do you need at a party to guarantee that there are m people all of whom know each otherNorman Do Party Problems and Ramsey Theory 1 Problems Pertaining to People at Parties Suppose

  11. Unsolved problems for young and old 1 The lure of an unsolved problem

    E-Print Network [OSTI]

    Do, Norman

    Norman Do Unsolved problems for young and old 1 The lure of an unsolved problem In his superb by Andrew Wiles after an incredible eight years of continuous toil spent searching for the Holy Grail on the backs of envelopes, #12;84 Norman Do and passed on by word of mouth until some very clever person can

  12. Analysis on the Inverse problem Statistical analysis of the inverse problem

    E-Print Network [OSTI]

    regression This is a non-linear regression model. Assumption : we have equal variance measurement errors and trigonometric forms. #12;Analysis on the Inverse problem Introduction Non-linear regression This is a non-linear on the Inverse problem Introduction Linear and non-linear regression Examples : Linear model y = 0 + 1x + 2x2 y

  13. Problem Type Problem Type Description Air Conditioning Air conditioner not working, leaking, etc

    E-Print Network [OSTI]

    Tennessee, University of

    Problem Type Problem Type Description Air Conditioning Air conditioner not working, leaking, etc, Microfridges Doors and Hardware Door repair/replace Lock, latch or hinge repair, key stuck; Lost or stolen key, repair or replace Shades/Blinds Window treatment - repair or replace Washer/Dryer Washer/Dryer repair

  14. The "top player problem" Here are two solutions of the "top player" problem,

    E-Print Network [OSTI]

    Sussmann, Hector

    The "top player problem" Here are two solutions of the "top player" problem, IMPORTANT REMARK that every tournament has a top player. For this purpose, it suffices to prove that (*) For every natural number n, and every tournament t with n play- ers, t has a top player. (If we use T(t) for "t

  15. Does Solving Ill-Defined Physics Problems Elicit More Learning than Conventional Problem

    E-Print Network [OSTI]

    VanLehn, Kurt

    ://www.pitt.edu/~mringenb/ Abstract. Students who complete an introductory physics course often do not have a good conceptual on the use of well- defined physics problems as both the primary practice and assessment activity. While it is important for students of physics to be able to solve these well-defined problems, it is obviously

  16. On complementary channels and the additivity problem

    E-Print Network [OSTI]

    A. S. Holevo

    2005-10-06T23:59:59.000Z

    We explore complementarity between output and environment of a quantum channel (or, more generally, CP map), making an observation that the output purity characteristics for complementary CP maps coincide. Hence, validity of the mutiplicativity/additivity conjecture for a class of CP maps implies its validity for complementary maps. The class of CP maps complementary to entanglement-breaking ones is described and is shown to contain diagonal CP maps as a proper subclass, resulting in new class of CP maps (channels) for which the multiplicativity/additivity holds. Covariant and Gaussian channels are discussed briefly in this context.

  17. Certifying Solutions to Permutation Group Problems

    E-Print Network [OSTI]

    Sorge, Volker

    the integration of permutation group algorithms with proof planning. We consider eight basic questions arising planning. We consider eight basic questions arising in computational permutation group theory, for whichCertifying Solutions to Permutation Group Problems Arjeh Cohen 1 , Scott H. Murray 1#3; , Martin

  18. Certifying Solutions to Permutation Group Problems

    E-Print Network [OSTI]

    Murray, Scott H.

    of permutation group algorithms with proof planning. We consider eight basic questions arising in com- putational the integration of permutation group algorithms from computer algebra with proof planning. We consider eight basicCertifying Solutions to Permutation Group Problems Arjeh Cohen1 , Scott H. Murray1, , Martin Pollet

  19. Proof Planning some Permutation Group Problems | Abstract |

    E-Print Network [OSTI]

    Sorge, Volker

    of permutation group algorithms from computer algebra with proof planning. We consider eight basic questions handle eight basic queries, ranging from \\Is this permutation in that permutation group?" to \\What suÃ?cient information. In detail we concentrate on the following eight problems: Let G be a group

  20. PET Analysis Challenging Problems in PET Imaging

    E-Print Network [OSTI]

    Renaut, Rosemary

    PET Analysis Challenging Problems in PET Imaging Estimating the Input Function for a Human Brain FDG-PET Study A Feasibility Study Dr. Hongbin Guo, Prof. Rosemary A. Renaut Department of Mathematics and Statistics,Arizona State Univerisity Dr. Kewei Chen Banner Good Samaritan PET center, Phoenix Supported by