Sample records for algorithms lowering generating

  1. 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

  2. CS229 Lecture notes Generative Learning algorithms

    E-Print Network [OSTI]

    Kosecka, Jana

    analysis (GDA). In this model, we'll assume that p(x|y) is distributed according to a multivariate normal discriminant analysis The first generative learning algorithm that we'll look at is Gaussian discrim- inant. In these notes, we'll talk about a different type of learning algorithm. Consider a classification problem

  3. Comparison of generality based algorithm variants for automatic taxonomy generation

    E-Print Network [OSTI]

    Madnick, Stuart E.

    We compare a family of algorithms for the automatic generation of taxonomies by adapting the Heymann-algorithm in various ways. The core algorithm determines the generality of terms and iteratively inserts them in a growing ...

  4. Comparison of Generality Based Algorithm Variants for Automatic Taxonomy Generation

    E-Print Network [OSTI]

    Henschel, Andreas

    We compare a family of algorithms for the automatic generation of taxonomies by adapting the Heymannalgorithm in various ways. The core algorithm determines the generality of terms and iteratively inserts them in a growing ...

  5. An evolutionary algorithm approach to poetry generation

    E-Print Network [OSTI]

    Manurung, Hisar

    Poetry is a unique artifact of the human language faculty, with its defining feature being a strong unity between content and form. Contrary to the opinion that the automatic generation of poetry is a relatively easy ...

  6. Fandomized Algorithms and Fandom Number Generation Lindsey Kuper Alex Rudnick

    E-Print Network [OSTI]

    Menczer, Filippo

    Fandomized Algorithms and Fandom Number Generation Lindsey Kuper Alex Rudnick School of fandomness and fandomized algo- rithms, discuss some of their applications, and demonstrate a prac- tical fandom number generator. Categories and Subject Descriptors Pairing [fandom/CS]; Rat- ing [PG-13] 1

  7. Detecting Networks Employing Algorithmically Generated Domain Names

    E-Print Network [OSTI]

    Ashwath Kumar Krishna Reddy

    2011-10-21T23:59:59.000Z

    . 15 0 0.02 0.04 0.06 0.08 0.1 0.12 0 1 2 3 4 5 6 7 8 9 a b c d e f g h i j k l m n o p q r s t u v w x y z Probability of occurrenc e Alphanumeric characters Malicious (Kraken) Malicious (Kwyjibo) Malicious (randomly generated... . . . . . . . . . . . . . . . . . . . 28 V RESULTS : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 30 5.1 Per-domain analysis . . . . . . . . . . . . . . . . . . . . . . . . 30 5.1.1 Data set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.1.2 K...

  8. Asymptotic, Algorithmic and Geometric Aspects of Groups Generated by Automata

    E-Print Network [OSTI]

    Savchuk, Dmytro M.

    2010-01-14T23:59:59.000Z

    : Mathematics iii ABSTRACT Asymptotic, Algorithmic and Geometric Aspects of Groups Generated by Automata. (August 2009) Dmytro Savchuk, B.S., National Taras Shevchenko University of Kyiv, Ukraine; M.S., National Taras Shevchenko University of Kyiv, Ukraine Co...?4; qn?3 = (a;a) n?3; (1.1) where i 2 Sym(f0;1g) is chosen arbitrarily. Conjecturally, each automaton in the family for which at least one of the i is nontrivial, generates the free product of groups of order 2. The flrst result supporting...

  9. Effects of a potential fourth fermion generation on the upper and lower Higgs boson mass bounds

    E-Print Network [OSTI]

    Philipp Gerhold; Karl Jansen; Jim Kallarackal

    2010-10-28T23:59:59.000Z

    We study the effect of a potential fourth fermion generation on the upper and lower Higgs boson mass bounds. This investigation is based on the numerical evaluation of a chirally invariant lattice Higgs-Yukawa model emulating the same Higgs-fermion coupling structure as in the Higgs sector of the electroweak Standard Model. In particular, the considered model obeys a Ginsparg-Wilson version of the underlying ${SU}(2)_L\\times {U}(1)_Y$ symmetry, being a global symmetry here due to the neglection of gauge fields in this model. We present our results on the modification of the upper and lower Higgs boson mass bounds induced by the presence of a hypothetical very heavy fourth quark doublet. Finally, we compare these findings to the standard scenario of three fermion generations.

  10. Using Genetic Algorithms to Improve the Visual Quality of Fractal Plants Generated with CSGPLSystems

    E-Print Network [OSTI]

    1 Using Genetic Algorithms to Improve the Visual Quality of Fractal Plants Generated with CSG­system, that generates a desired plant. Especially the tuning of the parameter values is time consuming and demands a lot genetic algorithms to find PL­systems that generate natural looking plants of a desired species. PL

  11. Generation of Blue Noise Arrays by Genetic Algorithm Jeffrey Newbern and V. Michael Bove, Jr.

    E-Print Network [OSTI]

    Bove Jr., V. Michael

    Generation of Blue Noise Arrays by Genetic Algorithm Jeffrey Newbern and V. Michael Bove, Jr for generating blue­noise threshold arrays which do not appear regular, and offer the visual advantages of error or output device characteristics. We present instead a genetic method for generating a blue­noise threshold

  12. Adaptive Control of Third Harmonic Generation via Genetic Algorithm

    E-Print Network [OSTI]

    Hua, Xia

    2010-10-12T23:59:59.000Z

    with selection, to improve the population as the evolution progresses from generation to generation. Femtosecond laser pulse tailoring, with the use of a pulse shaper, has become an important technology which enables applications in femtochemistry, micromachining...

  13. Optimization of a Small Passive Wind Turbine Generator with Multiobjective Genetic Algorithms

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    : Multiobjective Optimization, Genetic Algorithms, Wind Energy, Vertical Axis Wind Turbine hal-00763673,version1 #12;2.2. The Wind Turbine Characteristics A Savonius Vertical Axis Wind Turbine of radius R = 0.5 mOptimization of a Small Passive Wind Turbine Generator with Multiobjective Genetic Algorithms A

  14. A Smart Algorithm for the Diagnosis of Short-Circuit Faults in a Photovoltaic Generator

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Smart Algorithm for the Diagnosis of Short-Circuit Faults in a Photovoltaic Generator Wail Rezgui observations distributed over classes is used for simulation purposes. Keywords--Photovoltaic generator, SVM, k-NN, short-circuit fault, smart classification, linear programming. NOMENCLATURE PV = Photovoltaic; SVM

  15. Power Flow Analysis Algorithm for Islanded LV Microgrids Including Distributed Generator Units with

    E-Print Network [OSTI]

    Chaudhary, Sanjay

    Power Flow Analysis Algorithm for Islanded LV Microgrids Including Distributed Generator Units With larger portion of growing electricity demand which is being fed through distributed generation (DG power system. Being able to operate in both grid-connected and islanded mode, a microgrid manages

  16. MULTIOBJECTIVE OPTIMAL DESIGN OF SUPERCONDUCTING GENERATOR USING GENETIC ALGORITHM

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    Project(Super-GM) and successfully completed to verify electrical features in an electric power system, Itsuya Muta, Tsutomu Hoshino and Taketsune Nakamura Department of Electrical Engineering, Graduate School in this paper. In consideration of electrical and mechanical characteristics of superconducting generator

  17. Efficient generation and optimization of stochastic template banks by a neighboring cell algorithm

    E-Print Network [OSTI]

    Henning Fehrmann; Holger J. Pletsch

    2014-11-17T23:59:59.000Z

    Placing signal templates (grid points) as efficiently as possible to cover a multi-dimensional parameter space is crucial in computing-intensive matched-filtering searches for gravitational waves, but also in similar searches in other fields of astronomy. To generate efficient coverings of arbitrary parameter spaces, stochastic template banks have been advocated, where templates are placed at random while rejecting those too close to others. However, in this simple scheme, for each new random point its distance to every template in the existing bank is computed. This rapidly increasing number of distance computations can render the acceptance of new templates computationally prohibitive, particularly for wide parameter spaces or in large dimensions. This work presents a neighboring cell algorithm that can dramatically improve the efficiency of constructing a stochastic template bank. By dividing the parameter space into sub-volumes (cells), for an arbitrary point an efficient hashing technique is exploited to obtain the index of its enclosing cell along with the parameters of its neighboring templates. Hence only distances to these neighboring templates in the bank are computed, massively lowering the overall computing cost, as demonstrated in simple examples. Furthermore, we propose a novel method based on this technique to increase the fraction of covered parameter space solely by directed template shifts, without adding any templates. As is demonstrated in examples, this method can be highly effective..

  18. The lower hybrid (LH) heating and current drive system can generate 10-12 MW of microwave power

    E-Print Network [OSTI]

    Background The lower hybrid (LH) heating and current drive system can generate 10-12 MW reflecting optics · Remote vacuum window manufactured by CCFE · Industrial contract for periscope manufacture with Zemax model · Remote, IR compatible, double vacuum window with pumped interspace · 4, two colour

  19. Algorithm for calculation of characterisitcs of thermionic electricity-generating assemblies

    SciTech Connect (OSTI)

    Babushkin, Yu.V.; Mendel'baum, M.A.; Savinov, A.P.; Sinyavskii, V.V.

    1981-01-01T23:59:59.000Z

    A numerical algorithm has been developed for calculating the kinetic characteristics of electricity-generating coaxial cells and assemblies; it is based on separate solution of the equations describing the thermal and electrical processes with their subsequent coordination by way of the volt-ampere characteristics of an elementary thermionic converter by means of piecewise-linear approximation of the nonlinear characteristics at the operating points. The possibilities and advantages of the proposed calculation algorithm for investigation of the transients occurring in the course of operation of the electricity generating assemblies (EGA) are indicated. Results are reported for sample calculations of several EGA static and kinetic characteristics. 10 refs.

  20. A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic Generator

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic database containing sample data is used for simulation purposes. Keywords--Photovoltaic generator, SVR, k-NNR, reversed polarity fault, diagnosis, prognosis. NOMENCLATURE PV = Photovoltaic; SVM = Support Vector

  1. Current generation by helicons and lower hybrid waves in modern tokamaks and reactors ITER and DEMO. Scenarios, modeling and antennae

    SciTech Connect (OSTI)

    Vdovin, V. L., E-mail: vdov@nfi.kiae.ru [National Research Centre 'Kurchatov Institute,' (Russian Federation)

    2013-02-15T23:59:59.000Z

    The innovative concept and 3D full-wave code modeling the off-axis current drive by radio-frequency (RF) waves in large-scale tokamaks, ITER and DEMO, for steady-state operation with high efficiency is proposed. The scheme uses the helicon radiation (fast magnetosonic waves at high (20-40) ion cyclotron frequency harmonics) at frequencies of 500-700 MHz propagating in the outer regions of the plasmas with a rotational transform. It is expected that the current generated by helicons, in conjunction with the bootstrap current, ensure the maintenance of a given value of the total current in the stability margin q(0) {>=} 2 and q(a) {>=} 4, and will help to have regimes with a negative magnetic shear and internal transport barrier to ensure stability at high normalized plasma pressure {beta}{sub N} > 3 (the so-called advanced scenarios) of interest for the commercial reactor. Modeling with full-wave three-dimensional codes PSTELION and STELEC showed flexible control of the current profile in the reactor plasmas of ITER and DEMO, using multiple frequencies, the positions of the antennae and toroidal wave slow down. Also presented are the results of simulations of current generation by helicons in the DIII-D, T-15MD, and JT-60AS tokamaks. Commercially available continuous-wave klystrons of the MW/tube range are promising for commercial stationary fusion reactors. The compact antennae of the waveguide type are proposed, and an example of a possible RF system for today's tokamaks is given. The advantages of the scheme (partially tested at lower frequencies in tokamaks) are a significant decline in the role of parametric instabilities in the plasma periphery, the use of electrically strong resonator-waveguide type antennae, and substantially greater antenna-plasma coupling.

  2. Genetic algorithm applied to the optimization of quantum cascade lasers with second harmonic generation

    SciTech Connect (OSTI)

    Gaji?, A. [School of Electrical Engineering, University of Belgrade, Bulevar kralja Aleksandra 73, 11120 Belgrade (Serbia); Telekom Srbija, a.d., Takovska 2, 11000 Belgrade (Serbia); Radovanovi?, J., E-mail: radovanovic@etf.bg.ac.rs; Milanovi?, V. [School of Electrical Engineering, University of Belgrade, Bulevar kralja Aleksandra 73, 11120 Belgrade (Serbia); Indjin, D.; Ikoni?, Z. [School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT (United Kingdom)

    2014-02-07T23:59:59.000Z

    A computational model for the optimization of the second order optical nonlinearities in GaInAs/AlInAs quantum cascade laser structures is presented. The set of structure parameters that lead to improved device performance was obtained through the implementation of the Genetic Algorithm. In the following step, the linear and second harmonic generation power were calculated by self-consistently solving the system of rate equations for carriers and photons. This rate equation system included both stimulated and simultaneous double photon absorption processes that occur between the levels relevant for second harmonic generation, and material-dependent effective mass, as well as band nonparabolicity, were taken into account. The developed method is general, in the sense that it can be applied to any higher order effect, which requires the photon density equation to be included. Specifically, we have addressed the optimization of the active region of a double quantum well In{sub 0.53}Ga{sub 0.47}As/Al{sub 0.48}In{sub 0.52}As structure and presented its output characteristics.

  3. Man-portable power generation devices : product design and supporting algorithms

    E-Print Network [OSTI]

    Mitsos, Alexander

    2006-01-01T23:59:59.000Z

    A methodology for the optimal design and operation of microfabricated fuel cell systems is proposed and algorithms for relevant optimization problems are developed. The methodology relies on modeling, simulation and ...

  4. Linear Programming Lower Bounds for Minimum Converter ...

    E-Print Network [OSTI]

    generation algorithm for solving the linear relaxation of the most promising ... Keywords: Optical Networks, Wavelength Assignment, Integer Programming.

  5. A new gravitational wave generation algorithm for particle perturbations of the Kerr spacetime

    E-Print Network [OSTI]

    Enno Harms; Sebastiano Bernuzzi; Alessandro Nagar; Anil Zenginoglu

    2014-11-25T23:59:59.000Z

    We present a new approach to solve the 2+1 Teukolsky equation for gravitational perturbations of a Kerr black hole. Our approach relies on a new horizon penetrating, hyperboloidal foliation of Kerr spacetime and spatial compactification. In particular, we present a framework for waveform generation from point-particle perturbations. Extensive tests of a time domain implementation in the code {\\it Teukode} are presented. The code can efficiently deliver waveforms at future null infinity. As a first application of the method, we compute the gravitational waveforms from inspiraling and coalescing black-hole binaries in the large-mass-ratio limit. The smaller mass black hole is modeled as a point particle whose dynamics is driven by an effective-one-body-resummed analytical radiation reaction force. We compare the analytical angular momentum loss to the gravitational wave angular momentum flux. We find that higher-order post-Newtonian corrections are needed to improve the consistency for rapidly spinning binaries. Close to merger, the subdominant multipolar amplitudes (notably the $m=0$ ones) are enhanced for retrograde orbits with respect to prograde ones. We argue that this effect mirrors nonnegligible deviations from circularity of the dynamics during the late-plunge and merger phase. We compute the gravitational wave energy flux flowing into the black hole during the inspiral using a time-domain formalism proposed by Poisson. Finally, a self-consistent, iterative method to compute the gravitational wave fluxes at leading-order in the mass of the particle is presented. For a specific case study with $\\hat{a}$=0.9, a simulation that uses the consistent flux differs from one that uses the analytical flux by $\\sim35$ gravitational wave cycles over a total of about $250$ cycles. In this case the horizon absorption accounts for about $+5$ gravitational wave cycles.

  6. A Hierarchical Control Algorithm for Managing Electrical Energy Storage Systems in Homes Equipped with PV Power Generation

    E-Print Network [OSTI]

    Pedram, Massoud

    use their PV-based generation and controllable storage devices for peak shaving on their power demand controller should possess the ability of forecasting future PV-based power generation and load power consumption profiles for better performance. In this paper we present novel PV power generation and load power

  7. Next-generation transcriptome assembly

    E-Print Network [OSTI]

    Martin, Jeffrey A.

    2012-01-01T23:59:59.000Z

    technologies - the next generation. Nat Rev Genet 11, 31-algorithms for next-generation sequencing data. Genomicsassembly from next- generation sequencing data. Genome Res

  8. Lower Bounds for the Quadratic Minimum Spanning Tree Problem ...

    E-Print Network [OSTI]

    2014-09-23T23:59:59.000Z

    URL http://www.sciencedirect.com/science/article/pii/S0166218X14002467. [6] D. Pereira, M. Gendreau, A. Cunha, Lower bounds and exact algorithms for the...

  9. A Real-Time Soft Shadow Volume Algorithm

    E-Print Network [OSTI]

    Assarsson, Ulf

    algorithm to generate the hard shadows (umbra). The second pass compensates to provide the softness (penum

  10. Algorithms for Greechie Diagrams

    E-Print Network [OSTI]

    Brendan D. McKay; Norman D. Megill; Mladen Pavicic

    2001-01-21T23:59:59.000Z

    We give a new algorithm for generating Greechie diagrams with arbitrary chosen number of atoms or blocks (with 2,3,4,... atoms) and provide a computer program for generating the diagrams. The results show that the previous algorithm does not produce every diagram and that it is at least 100,000 times slower. We also provide an algorithm and programs for checking of Greechie diagram passage by equations defining varieties of orthomodular lattices and give examples from Hilbert lattices. At the end we discuss some additional characteristics of Greechie diagrams.

  11. ORIGINAL ARTICLE Hydropower development in the lower Mekong basin

    E-Print Network [OSTI]

    Vermont, University of

    ORIGINAL ARTICLE Hydropower development in the lower Mekong basin: alternative approaches to deal hydropower generation and potentially irreversible negative impacts on the ecosystems that provide hydropower generation and potentially irreversible negative impacts on the ecosystems that provide

  12. Obtaining Lower Bounds from the Progressive Hedging Algorithm ...

    E-Print Network [OSTI]

    2014-01-21T23:59:59.000Z

    Oct 11, 2013 ... Energy Network Integration (GENI) program, and by the Department of ... fied into two or more stages according to which parameter values ..... Simultaneous consideration of multiple scenarios ..... tion from unpredictable and variable sources such as wind and .... We converted the SIPLIB instances into the.

  13. Lower Bounds and Exact Algorithms for the Quadratic Minimum ...

    E-Print Network [OSTI]

    2013-12-16T23:59:59.000Z

    Dec 16, 2013 ... 50. 1225. OP2. 13198. -. -. 13231. 5608. 12940.4. 189. 71. 8244. -. -. -. -. -. -. 50. 1225. OP2. 15137. -. -. 15218. 4768. 14708.5. 193. 123. 11761.

  14. Lower Hybrid Experiments

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9November 6, 2014Innovation Portal Lower

  15. Fast K System Generators of Pseudorandom Numbers

    E-Print Network [OSTI]

    Akopov, N Z; Nersessian, A B; Savvidy, G K; Greiner, W

    1993-01-01T23:59:59.000Z

    We suggest fast algorithm for the matrix generator of pseudorandom numbers based on Kolmogorov-Anosov K systems which has been earliar proposed in \\cite{savvidy1,akopov1}. This algorithm reduces $N^{2}$ operation of the matrix generator to $NlnN$ and essentially reduces the generation time. It also clarifies the algebraic structure of this type of K system generators.

  16. Fast K System Generators of Pseudorandom Numbers

    E-Print Network [OSTI]

    N. Z. Akopov; E. M. Madounts; A. B. Nersesian; G. K. Savvidy; W. Greiner

    1993-11-19T23:59:59.000Z

    We suggest fast algorithm for the matrix generator of pseudorandom numbers based on Kolmogorov-Anosov K systems which has been earliar proposed in \\cite{savvidy1,akopov1}. This algorithm reduces $N^{2}$ operation of the matrix generator to $NlnN$ and essentially reduces the generation time. It also clarifies the algebraic structure of this type of K system generators.

  17. Algorithmic issues in queueing systems and combinatorial counting problems

    E-Print Network [OSTI]

    Katz-Rogozhnikov, Dmitriy A

    2008-01-01T23:59:59.000Z

    (cont.) However, these randomized algorithms can never provide proven upper or lower bounds on the number of objects they are counting, but can only give probabilistic estimates. We propose a set of deterministic algorithms ...

  18. A hybrid of the genetic algorithm and concurrent simplex

    E-Print Network [OSTI]

    Randolph, David Ethan

    1995-01-01T23:59:59.000Z

    by drawing the genetic algorithm's attention to local optima too quickly, leading to premature con- vergence [7]. Thus, while local optimization might improve the speed of the analysis, the genetic algorithm might pay dearly with a much lower quality linal...

  19. Co-Clustering with Generative Models

    E-Print Network [OSTI]

    Golland, Polina

    2009-11-03T23:59:59.000Z

    In this paper, we present a generative model for co-clustering and develop algorithms based on the mean field approximation for the corresponding modeling problem. These algorithms can be viewed as generalizations of the ...

  20. Tree Elaboration Strategies Branch and Bound Algorithms

    E-Print Network [OSTI]

    , Elon College Terri Anne Johnson, Elon College Monique Guignard-Spielberg, The University of a sharp lower bound technique in these algorithms is one of the major difficulties. Recently, Hahn

  1. The Simulation of Humans and Lower Animals Demetri Terzopoulos

    E-Print Network [OSTI]

    Terzopoulos, Demetri

    work on the motor control of anthropomorphically articulated dynamic models, as well as the biomechanical modeling of lower animals such as fish, including motor control algorithms that enable and Simulation, Human Simulation, Musculoskeletal Modeling, Neuro- muscular Control, Motor Control Learning 1

  2. Optimization Online - Dynamic Generation of Scenario Trees

    E-Print Network [OSTI]

    G. Ch. Pflug

    2014-09-03T23:59:59.000Z

    Sep 3, 2014 ... Abstract: We present new algorithms for the dynamic generation of scenario trees for multistage stochastic optimization. The different methods...

  3. Lower Cost Carbon Fiber Precursors

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

    production and conversion parameters must be optimized. Lower cost fiber enable CF composite applications. Approach: 1. Complete previous effort by scaling to the CF production...

  4. LOWER COLUMBIA SALMON AND STEELHEAD

    E-Print Network [OSTI]

    Appendices Prepared By: Lower Columbia Fish Recovery Board Prepared For Northwest Power And Conservation for Recovery and Subbasin Planning prepared under direction of the Washington Lower Columbia River Fish prepared by the Fish Recovery Board. The Technical Foundation is an encyclopedia of information relating

  5. Lower Tuscaloosa of southern Mississippi

    SciTech Connect (OSTI)

    Devery, D.M.

    1980-12-01T23:59:59.000Z

    The Lower Tuscaloosa Formation of the upper Cretaceous currently is producing primarily oil from more than 50 fields in the interior salt basin of Mississippi. These fields are located within an area extending from east Louisiana into SW and S.-central Mississippi (Jefferson, Adams, Franklin, Lincoln, Amite, Pike, Walthall, Lamar, Forrest, and Pearl River Counties). Stratigraphically, the Lower Tuscaloosa unconformably overlies lower Cretaceous sediments of the Dantzler Formation and underlies lower Cretaceous shales of the Middle Tuscaloosa. The formation consists of a transgressive sequence that grades upward from alluvial plain through delta to marine deposits. Prospecting for oil and gas as well as developing new fields in the Lower Tuscaloosa can be difficult. There is generally a lack of strong structural closure; accumulation of oil and gas is controlled largely by stratigraphy, with lenticular sands pinching out into shales.

  6. An Improved Algorithm for the Generalized Quadratic Assignment ...

    E-Print Network [OSTI]

    artur

    2008-05-15T23:59:59.000Z

    presented a special-purpose branch-and-bound algorithm that utilizes linear programming cuts, feasible solution generators, Lagrangean relaxation, and...

  7. application genetic algorithms: Topics by E-print Network

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

    Learning mode generates hypotheses Evolution Model, Genetic Algorithms, Function Optimization, Symbolic Learning, AQ18, Digital Filters. 1An Experimental Application of...

  8. Advanced CHP Control Algorithms: Scope Specification

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Brambley, Michael R.

    2006-04-28T23:59:59.000Z

    The primary objective of this multiyear project is to develop algorithms for combined heat and power systems to ensure optimal performance, increase reliability, and lead to the goal of clean, efficient, reliable and affordable next generation energy systems.

  9. A Lower Bound for the Quadratic Assignment Problem Based on a Level-2 Reformulation-Linearization

    E-Print Network [OSTI]

    Terri Anne Johnson, Clemson University Monique Guignard-Spielberg, The University of Pennsylvania-and-bound are the most successful, but the lack of sharp lower bounds in these algorithms has been one of the major

  10. Lower Hybrid antennas for nuclear fusion experiments

    E-Print Network [OSTI]

    Hillairet, Julien; Bae, Young-Soon; Bai, X; Balorin, C; Baranov, Y; Basiuk, V; Bcoulet, A; Belo, J; Berger-By, G; Brmond, S; Castaldo, C; Ceccuzzi, S; Cesario, R; Corbel, E; Courtois, X; Decker, J; Delmas, E; Delpech, L; Ding, X; Douai, D; Ekedahl, A; Goletto, C; Goniche, M; Guilhem, D; Hertout, P; Imbeaux, F; Litaudon, X; Magne, R; Mailloux, J; Mazon, D; Mirizzi, F; Mollard, P; Moreau, P; Oosako, T; Petrzilka, V; Peysson, Y; Poli, S; Preynas, M; Prou, M; Saint-Laurent, F; Samaille, F; Saoutic, B

    2015-01-01T23:59:59.000Z

    The nuclear fusion research goal is to demonstrate the feasibility of fusion power for peaceful purposes. In order to achieve the conditions similar to those expected in an electricity-generating fusion power plant, plasmas with a temperature of several hundreds of millions of degrees must be generated and sustained for long periods. For this purpose, RF antennas delivering multi-megawatts of power to magnetized confined plasma are commonly used in experimental tokamaks. In the gigahertz range of frequencies, high power phased arrays known as "Lower Hybrid" (LH) antennas are used to extend the plasma duration. This paper reviews some of the technological aspects of the LH antennas used in the Tore Supra tokamak and presents the current design of a proposed 20 MW LH system for the international experiment ITER.

  11. Lower Cost Carbon Fiber Precursors

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

    1 Lower Cost Carbon Fiber Precursors P.I. Name: Dave Warren Presenter: Dr. Amit K. Naskar Oak Ridge National Laboratory 05162012 Project ID LM004 This presentation does not...

  12. Algorithms for builder guidelines

    SciTech Connect (OSTI)

    Balcomb, J.D.; Lekov, A.B.

    1989-06-01T23:59:59.000Z

    The Builder Guidelines are designed to make simple, appropriate guidelines available to builders for their specific localities. Builders may select from passive solar and conservation strategies with different performance potentials. They can then compare the calculated results for their particular house design with a typical house in the same location. Algorithms used to develop the Builder Guidelines are described. The main algorithms used are the monthly solar ratio (SLR) method for winter heating, the diurnal heat capacity (DHC) method for temperature swing, and a new simplified calculation method (McCool) for summer cooling. This paper applies the algorithms to estimate the performance potential of passive solar strategies, and the annual heating and cooling loads of various combinations of conservation and passive solar strategies. The basis of the McCool method is described. All three methods are implemented in a microcomputer program used to generate the guideline numbers. Guidelines for Denver, Colorado, are used to illustrate the results. The structure of the guidelines and worksheet booklets are also presented. 5 refs., 3 tabs.

  13. Lower paleozoic of Baltic Area

    SciTech Connect (OSTI)

    Haselton, T.M.; Surlyk, F.

    1988-01-01T23:59:59.000Z

    The Baltic Sea offers a new and exciting petroleum play in northwestern Europe. The Kaliningrad province in the Soviet Union, which borders the Baltic Sea to the east, contains an estimated 3.5 billion bbl of recoverable oil from lower Paleozoic sandstones. To the south, in Poland, oil and gas fields are present along a trend that projects offshore into the Baltic. Two recent Petrobaltic wells in the southern Baltic have tested hydrocarbons from lower Paleozoic sandstone. Minor production comes from Ordovician reefs on the Swedish island of Gotland in the western Baltic. The Baltic synclise, which began subsiding in the late Precambrian, is a depression in the East European platform. Strate dip gently to the south where the Baltic Synclise terminates against a structurally complex border zone. Depth to the metamorphosed Precambrian basement is up to 4,000 m. Overlying basement is 200-300 m of upper Precambrian arkosic sandstone. The Lower Cambrian consists of shallow marine quartzites. During Middle and Late Camnbrian, restricted circulation resulted in anoxic conditions and the deposition of Alum shale. The Lower Ordovician consists of quartzites and shale. The Upper Ordovician includes sandstones and algal reefs. The Silurian contains marginal carbonates and shales. For the last 25 years, exploration in northwest Europe has concentrated on well-known Permian sandstone, Jurassic sandstone, and Cretaceous chalk plays. Extrapolation of trends known and exploited in eastern Europe could open an entirely new oil province in the lower Paleozoic in the Baltic.

  14. Method of generating a surface mesh

    DOE Patents [OSTI]

    Shepherd, Jason F. (Albuquerque, NM); Benzley, Steven (Provo, UT); Grover, Benjamin T. (Tracy, CA)

    2008-03-04T23:59:59.000Z

    A method and machine-readable medium provide a technique to generate and modify a quadrilateral finite element surface mesh using dual creation and modification. After generating a dual of a surface (mesh), a predetermined algorithm may be followed to generate and modify a surface mesh of quadrilateral elements. The predetermined algorithm may include the steps of generating two-dimensional cell regions in dual space, determining existing nodes in primal space, generating new nodes in the dual space, and connecting nodes to form the quadrilateral elements (faces) for the generated and modifiable surface mesh.

  15. Catalyst for producing lower alcohols

    DOE Patents [OSTI]

    Rathke, Jerome W. (Bolingbrook, IL); Klingler, Robert J. (Woodridge, IL); Heiberger, John J. (Glen Ellyn, IL)

    1987-01-01T23:59:59.000Z

    A process and system for the production of the lower alcohols such as methanol, ethanol and propanol involves the reaction of carbon monoxide and water in the presence of a lead salt and an alkali metal formate catalyst combination. The lead salt is present as solid particles such as lead titanate, lead molybdate, lead vanadate, lead zirconate, lead tantalate and lead silicates coated or in slurry within molten alkali metal formate. The reactants, carbon monoxide and steam are provided in gas form at relatively low pressures below 100 atmospheres and at temperatures of 200-400.degree. C. The resulted lower alcohols can be separated into boiling point fractions and recovered from the excess reactants by distillation.

  16. Oxygen enhanced switching to combustion of lower rank fuels

    DOE Patents [OSTI]

    Kobayashi, Hisashi; Bool III, Lawrence E.; Wu, Kuang Tsai

    2004-03-02T23:59:59.000Z

    A furnace that combusts fuel, such as coal, of a given minimum energy content to obtain a stated minimum amount of energy per unit of time is enabled to combust fuel having a lower energy content, while still obtaining at least the stated minimum energy generation rate, by replacing a small amount of the combustion air fed to the furnace by oxygen. The replacement of oxygen for combustion air also provides reduction in the generation of NOx.

  17. Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study

    E-Print Network [OSTI]

    Cappers, Peter

    2012-01-01T23:59:59.000Z

    Pricing on the Usage of Wind Generation. Power Systems, IEEE2008) Analysis of Wind Generation Impact on ERCOT Anclillaryto higher or lower wind generation than scheduled. To manage

  18. Generation of energy

    DOE Patents [OSTI]

    Kalina, Alexander I. (12214 Clear Fork, Houston, TX 77077)

    1984-01-01T23:59:59.000Z

    A method of generating energy which comprises utilizing relatively lower temperature available heat to effect partial distillation of at least portion of a multicomponent working fluid stream at an intermediate pressure to generate working fluid fractions of differing compositions. The fractions are used to produce at least one main rich solution which is relatively enriched with respect to the lower boiling component, and to produce at least one lean solution which is relatively improverished with respect to the lower boiling component. The pressure of the main rich solution is increased whereafter it is evaporated to produce a charged gaseous main working fluid. The main working fluid is expanded to a low pressure level to release energy. The spent low pressure level working fluid is condensed in a main absorption stage by dissolving with cooling in the lean solution to regenerate an initial working fluid for reuse.

  19. Lower Sioux Wind Feasibility & Development

    SciTech Connect (OSTI)

    Minkel, Darin

    2012-04-01T23:59:59.000Z

    This report describes the process and findings of a Wind Energy Feasibility Study (Study) conducted by the Lower Sioux Indian Community (Community). The Community is evaluating the development of a wind energy project located on tribal land. The project scope was to analyze the critical issues in determining advantages and disadvantages of wind development within the Community. This analysis addresses both of the Community's wind energy development objectives: the single turbine project and the Commerical-scale multiple turbine project. The main tasks of the feasibility study are: land use and contraint analysis; wind resource evaluation; utility interconnection analysis; and project structure and economics.

  20. Central Ferry-Lower Monumental

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamos Laboratory NastasiPASTCentral AirCentral Ferry Lower

  1. Lower East Fork Poplar Creek

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheney suggesting a billVehicles | DepartmentStrategicfrom Lower15

  2. Decision-Support Software for Grid Operators: Transmission Topology Control for Infrastructure Resilience to the Integration of Renewable Generation

    SciTech Connect (OSTI)

    None

    2012-03-16T23:59:59.000Z

    GENI Project: The CRA team is developing control technology to help grid operators more actively manage power flows and integrate renewables by optimally turning on and off entire power lines in coordination with traditional control of generation and load resources. The control technology being developed would provide grid operators with tools to help manage transmission congestion by identifying the facilities whose on/off status must change to lower generation costs, increase utilization of renewable resources and improve system reliability. The technology is based on fast optimization algorithms for the near to real-time change in the on/off status of transmission facilities and their software implementation.

  3. Converting online algorithms to local computation algorithms

    E-Print Network [OSTI]

    Mansour, Yishay; Vardi, Shai; Xie, Ning

    2012-01-01T23:59:59.000Z

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

  4. How Efficient Can We Be?: Bounds on Algorithm Energy Consumption

    E-Print Network [OSTI]

    California at Irvine, University of

    How Efficient Can We Be?: Bounds on Algorithm Energy Consumption Andrew Gearhart #12;Relation design use feedback to "cotune" compute kernel energy efficiency #12;Previous Work: Communication Lower-optimal" algorithms #12;Communication is energy inefficient! On-chip/Off-chip gap isn't going to improve much Data

  5. Distributed multicast tree generation with dynamic group membership Frank Adelsteina

    E-Print Network [OSTI]

    Richard III, Golden G.

    Distributed multicast tree generation with dynamic group membership Frank Adelsteina , Golden G. Another distinguishing character- istic for tree generation algorithms is centralized versus distributed, efficient network utilization becomes a growing concern. Multicast transmission may use network bandwidth

  6. Status of dynamical ensemble generation

    E-Print Network [OSTI]

    Chulwoo Jung

    2010-01-06T23:59:59.000Z

    I give an overview of current and future plans of dynamical QCD ensemble generation activities. A comparison of simulation cost between different discretizations is made. Recent developments in techniques and algorithms used in QCD dynamical simulations, especially mass reweighting, are also discussed.

  7. Reconstruction algorithms for MRI

    E-Print Network [OSTI]

    Bilgic?, Berkin

    2013-01-01T23:59:59.000Z

    This dissertation presents image reconstruction algorithms for Magnetic Resonance Imaging (MRI) that aims to increase the imaging efficiency. Algorithms that reduce imaging time without sacrificing the image quality and ...

  8. ALGORITHM FOR ACCNT

    Energy Science and Technology Software Center (OSTI)

    002651IBMPC00 Algorithm for Accounting for the Interactions of Multiple Renewable Energy Technologies in Estimation of Annual Performance

  9. Semiclassical Shor algorithm

    SciTech Connect (OSTI)

    Giorda, Paolo [Institute for Scientific Interchange, Villa Gualino Viale Settimio Severo 65, 10133 Turin (Italy); Iorio, Alfredo [Center for Theoretical Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307 (United States); INFN, Rome (Italy); Sen, Samik [School of Mathematics, Trinity College Dublin, Dublin 2 (Ireland); Sen, Siddhartha [School of Mathematics, Trinity College Dublin, Dublin 2 (Ireland); IACS, Jadavpur, Calcutta 700032 (India)

    2004-09-01T23:59:59.000Z

    We propose a semiclassical version of Shor's quantum algorithm to factorize integer numbers, based on spin-(1/2) SU(2) generalized coherent states. Surprisingly, we find evidence that the algorithm's success probability is not too severely modified by our semiclassical approximation. This suggests that it is worth pursuing practical implementations of the algorithm on semiclassical devices.

  10. Changes in the Economic Value of Variable Generation at High Penetration Levels: A Pilot Case Study of California

    E-Print Network [OSTI]

    Mills, Andrew

    2013-01-01T23:59:59.000Z

    demand, more flexible thermal generation, and lower costof VG technologies), more flexible thermal generation, pricedemand, more flexible thermal generation, and low-cost bulk-

  11. Second generation PFB for advanced power generation

    SciTech Connect (OSTI)

    Robertson, A.; Van Hook, J.

    1995-11-01T23:59:59.000Z

    Research is being conducted under a United States Department of Energy (USDOE) contract to develop a new type of coal-fueled plant for electric power generation. This new type of plant-called an advanced or second-generation pressurized fluidized bed combustion (APFBC) plant-offers the promise of 45-percent efficiency (HHV), with emissions and a cost of electricity that are significantly lower than conventional pulverized-coal-fired plants with scrubbers. This paper summarizes the pilot plant R&D work being conducted to develop this new type of plant. Although pilot plant testing is still underway, preliminary estimates indicate the commercial plant Will perform better than originally envisioned. Efficiencies greater than 46 percent are now being predicted.

  12. Winter Energy Savings from Lower Thermostat Settings

    Reports and Publications (EIA)

    2000-01-01T23:59:59.000Z

    This discussion provides details on the effect of lowering thermostat settings during the winter heating months of 1997.

  13. Combinations of Estimation of Distribution Algorithms and Other Techniques

    E-Print Network [OSTI]

    Zhang, Qingfu

    for solving hard search and optimization problems: (a) guided mutation, an offspring generator in which algorithm with guided mutation outperforms the best GA for the maximum clique problem, (b) evolutionary to be improved by an expensive local search. Index Terms Estimation Distribution Algorithm, Guided Mutation

  14. FDD Algorithm for an AHU Reverse-Return System

    E-Print Network [OSTI]

    Djuric, N.; Novakovic, V.

    A fault detection and diagnosis (FDD) algorithm was developed for an AHU reverse-return system for air cooling. These FDD rules were generated using simulation in three steps. Cause-effect rules were established by connecting the faults...

  15. Distributed Probabilistic Model-Building Genetic Algorithm

    E-Print Network [OSTI]

    Dongarra, Jack

    is considered by Principal Component Analysis (PCA) when the off- springs are generated. The island modelDistributed Probabilistic Model-Building Genetic Algorithm Tomoyuki Hiroyasu1 , Mitsunori Miki1), Distributed PMBGA (DPMBGA), is proposed. In the DPMBGA, the correlation among the design variables

  16. ZART: A Multifunctional Itemset Mining Algorithm

    E-Print Network [OSTI]

    Boyer, Edmond

    independent, multi-purposed data mining platform, incorporating a rich collection of data mining algorithms, allowing a number of auxiliary operations for preparing and filtering data, and, for interpreting in data mining today. Generating strong association rules from frequent itemsets often results in a huge

  17. Generating Beta Variates Via Patchwork Rejection \\Lambda

    E-Print Network [OSTI]

    Stadlober, Ernst

    Generating Beta Variates Via Patchwork Rejection \\Lambda H. Zechner and E. Stadlober, Graz --- Zusammenfassung Generating Beta Variates Via Patchwork Rejection. A new algorithm for sampling from beta(p; q deviates can often be accepted immediately, so that much fewer than two uniforms are needed for one beta

  18. Thermoacoustic magnetohydrodynamic electrical generator

    DOE Patents [OSTI]

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1984-11-16T23:59:59.000Z

    A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.

  19. Thermoacoustic magnetohydrodynamic electrical generator

    DOE Patents [OSTI]

    Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Los Alamos, NM); Migliori, Albert (Santa Fe, NM)

    1986-01-01T23:59:59.000Z

    A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1,000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.

  20. Test generation and fault detection for VLSI PPL circuits

    SciTech Connect (OSTI)

    Amin, A.A.M.

    1987-01-01T23:59:59.000Z

    The problem of design for testability of PPL logic circuits is addressed. A test-generation package was developed which utilizes the special features of PPL logic to generate high fault coverage test vectors at a reduced computational cost. The test strategy assumes that one of the scan design techniques is used. A new methodology for test-vectors compaction without compromising the fault coverage is also proposed. A fault-oriented test-generation algorithm combined with a heuristic test-generation algorithm are the essential ingredients of this package. The fault-oriented algorithm uses a modified D-algorithm which includes look-ahead features and a new seven-valued logic to improve the average speed of the test-generation process. Fault coverages in the 90% range were obtained using the test sequences generated by this package.

  1. Thermoelectric Generators 1. Thermoelectric generator

    E-Print Network [OSTI]

    Lee, Ho Sung

    1 Thermoelectric Generators HoSung Lee 1. Thermoelectric generator 1.1 Basic Equations In 1821 effects are called the thermoelectric effects. The mechanisms of thermoelectricity were not understood. Cold Hot I - -- - - - - -- Figure 1 Electron concentration in a thermoelectric material. #12;2 A large

  2. Dagstuhl Seminar 08371 on Fault-Tolerant Distributed Algorithms on VLSI Chips

    E-Print Network [OSTI]

    -tolerant dis- tributed algorithms research can be utilized for meeting the challenges of future- generation-tolerant distributed algorithms research can indeed be utilized for meetinDagstuhl Seminar 08371 on Fault-Tolerant Distributed Algorithms on VLSI Chips Bernadette Charron

  3. An implementable algorithm for the optimal design centering, tolerancing, and tuning problem

    SciTech Connect (OSTI)

    Polak, E.

    1982-05-01T23:59:59.000Z

    An implementable master algorithm for solving optimal design centering, tolerancing, and tuning problems is presented. This master algorithm decomposes the original nondifferentiable optimization problem into a sequence of ordinary nonlinear programming problems. The master algorithm generates sequences with accumulation points that are feasible and satisfy a new optimality condition, which is shown to be stronger than the one previously used for these problems.

  4. Algorithms for Symmetric Linear and Integer Programs

    E-Print Network [OSTI]

    Bdi, Richard; Joswig, Michael

    2010-01-01T23:59:59.000Z

    This paper deals with exploiting symmetry for solving linear and integer programming problems. Basic properties of linear representations of finite groups can be used to reduce symmetric linear programming to solving linear programs of lower dimension. Combining this approach with knowledge of the geometry of feasible integer solutions yields an algorithm for solving highly symmetric integer linear programs which only takes time which is linear in the number of constraints and quadratic in the dimension.

  5. Sandbar Dynamics of the Lower Platte

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Sandbar Dynamics of the Lower Platte River Pilot Study 2011 methods and initial results In cooperation with Lower Platte South Natural Resources District By Jason S. Alexander and Ron Zelt Photo credits: Nebraska Tern and Plover Conservation Partnership #12;Why does the Platte River provide excellent

  6. Muon ID - taking care of lower momenta muons

    SciTech Connect (OSTI)

    Milstene, C.; Fisk, G.; Para, A.; /Fermilab

    2005-12-01T23:59:59.000Z

    In the Muon package under study, the tracks are extrapolated using an algorithm which accounts for the magnetic field and the ionization (dE/dx). We improved the calculation of the field dependent term to increase the muon detection efficiency at lower momenta using a Runge-Kutta method. The muon identification and hadron separation in b-bbar jets is reported with the improved software. In the same framework, the utilization of the Kalman filter is introduced. The principle of the Kalman filter is described in some detail with the propagation matrix, with the Runge-Kutta term included, and the effect on low momenta for low momenta single muons particles is described.

  7. Next-Generation Wind Technology | Department of Energy

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

    and reliability of next-generation wind technologies while lowering the cost of wind energy. The program's research efforts have helped to increase the average capacity...

  8. Testing the Accuracy of Redshift Space Group Finding Algorithms

    E-Print Network [OSTI]

    James J. Frederic

    1994-09-07T23:59:59.000Z

    Using simulated redshift surveys generated from a high resolution N-body cosmological structure simulation, we study algorithms used to identify groups of galaxies in redshift space. Two algorithms are investigated; both are friends-of-friends schemes with variable linking lengths in the radial and transverse dimensions. The chief difference between the algorithms is in the redshift linking length. The algorithm proposed by Huchra \\& Geller (1982) uses a generous linking length designed to find ``fingers of god'' while that of Nolthenius \\& White (1987) uses a smaller linking length to minimize contamination by projection. We find that neither of the algorithms studied is intrinsically superior to the other; rather, the ideal algorithm as well as the ideal algorithm parameters depend on the purpose for which groups are to be studied. The Huchra/Geller algorithm misses few real groups, at the cost of including some spurious groups and members, while the Nolthenius/White algorithm misses high velocity dispersion groups and members but is less likely to include interlopers in its group assignments. In a companion paper we investigate the accuracy of virial mass estimates and clustering properties of groups identified using these algorithms.

  9. Lower bound and an optimal algorithm for leader election in faulty asynchronous general networks

    E-Print Network [OSTI]

    Lateef, Mohammed Afroz

    1993-01-01T23:59:59.000Z

    incident on it, the size of the network, and the ID of the node. Thus a node does not know who its neighbors are and which links are unreliable. We assume that the network is asynchronous i. e. there is no global clock and global memory in the network... the leader is a loser. Each node knows its ID, the number of edges incident on it, and the number of nodes in the network, i. e. ~V) = N. The node does not know which of the links are reliable. The IDs of the uodes are unique and distinct. All the nodes...

  10. Stochastic Ion Heating by Lower Hybrid Turbulence

    E-Print Network [OSTI]

    Candy, J.

    2010-01-01T23:59:59.000Z

    of Tur b ulent S jpectrum Heating S imulations. Run 1A 2A 3ADivision Stochastic Ion Heating by Lower Hybrid Turbulenceweb development in this heating process is also discussed. I

  11. Lower Saccharide Nanometric Materials and Methods

    DOE Patents [OSTI]

    Schilling, Christopher H.; Tomasik, Piotr; Sikora, Marek

    2004-07-13T23:59:59.000Z

    A ceramic composition having at least one nanometric ceramic powder, at least one lower saccharide, and water. The composition is useful in many industrial applications, including preparation of stronger and substantially defect free green and sintered ceramic bodies.

  12. Optimized Algorithms Boost Combustion Research

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

    Optimized Algorithms Boost Combustion Research Optimized Algorithms Boost Combustion Research Methane Flame Simulations Run 6x Faster on NERSC's Hopper Supercomputer November 25,...

  13. Algorithms incorporating concurrency and caching

    E-Print Network [OSTI]

    Fineman, Jeremy T

    2009-01-01T23:59:59.000Z

    This thesis describes provably good algorithms for modern large-scale computer systems, including today's multicores. Designing efficient algorithms for these systems involves overcoming many challenges, including concurrency ...

  14. The Deng algorithm in higher dimensions

    E-Print Network [OSTI]

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

    2014-12-28T23:59:59.000Z

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

  15. Optimization Online - Simultaneous Column-and-Row Generation ...

    E-Print Network [OSTI]

    Ibrahim Muter

    2010-11-14T23:59:59.000Z

    Nov 14, 2010 ... Abstract: In this paper, we develop a simultaneous column-and-row generation algorithm that could be applied to a general class of large-scale...

  16. Generating Random Graphs with Large Girth Mohsen Bayati

    E-Print Network [OSTI]

    Saberi, Amin

    Generating Random Graphs with Large Girth Mohsen Bayati Andrea Montanari Amin Saberi Abstract We; saberi@stanford.edu. 1 #12;free graphs are close to bipartite. We show that our new algorithm guarantees

  17. A Flexible Integrated Architecture For Generating Poetic Texts

    E-Print Network [OSTI]

    Manurung, Hisar; Ritchie, Graeme; Thompson, Henry

    2000-01-01T23:59:59.000Z

    In this paper we describe a flexible approach to natural language generation that employs a stochastic hillclimbing search algorithm and an integrated architecture. We then discuss the benefits of this approach over existing, informative, goal...

  18. The Automatic Generation of Mutation Operators for Genetic Algorithms

    E-Print Network [OSTI]

    Woodward, John

    of Computing Science and Mathematics School of Natural Sciences, University of Stirling, Stirling FK9 4LA class. Engineering design is an intrinsically multi-dimensional activity, where the dimensions might

  19. Algorithms for Next-Generation High-Throughput Sequencing Technologies

    E-Print Network [OSTI]

    Kao, Wei-Chun

    2011-01-01T23:59:59.000Z

    parameters for 4 different tiles of the 76- cycle PhiX174scores at error tolerance . . . . 2.9 Tile-specific errorsection). Normalizing by the tile-wide average c t is to

  20. A Complete Algorithm for Generating Landmarks Departamento de Computacion

    E-Print Network [OSTI]

    Bonet, Blai

    Sim´on Bol´ivar Caracas, Venezuela bonet@ldc.usb.ve Julio Castillo Departamento de Computaci´on Universidad Sim´on Bol´ivar Caracas, Venezuela juliocc@gmail.com Abstract A collection of landmarks

  1. An efficient parallel algorithm for matrix-vector multiplication

    SciTech Connect (OSTI)

    Hendrickson, B.; Leland, R.; Plimpton, S.

    1993-03-01T23:59:59.000Z

    The multiplication of a vector by a matrix is the kernel computation of many algorithms in scientific computation. A fast parallel algorithm for this calculation is therefore necessary if one is to make full use of the new generation of parallel supercomputers. This paper presents a high performance, parallel matrix-vector multiplication algorithm that is particularly well suited to hypercube multiprocessors. For an n x n matrix on p processors, the communication cost of this algorithm is O(n/[radical]p + log(p)), independent of the matrix sparsity pattern. The performance of the algorithm is demonstrated by employing it as the kernel in the well-known NAS conjugate gradient benchmark, where a run time of 6.09 seconds was observed. This is the best published performance on this benchmark achieved to date using a massively parallel supercomputer.

  2. Geometric Lower Bounds for Parametric Matroid Optimization

    E-Print Network [OSTI]

    Eppstein, David

    (n)) for the special case of parametric graph minimum spanning trees. The only previous lower bound was (n logr for the sequence of minimum spanning trees in a graph with linearly varying edge weights. This parametric spanning tree problem has applications including the stochastic spanning tree problem studied by Ishii et al

  3. EARTH SCIENCES Lower-Division Requirements

    E-Print Network [OSTI]

    Constable, Steve

    2012-2013 EARTH SCIENCES Lower-Division Requirements Math 20A_____ 20B_____ 20C_____ 20D (BILD 3) _____ SIO 50* _____ Group A: Earth Science Upper-Division Core Requirements (all courses _____ Introduction to Geophysics SIO 104 _____ Paleobiology and History of Life* Group B: Upper-Division Earth

  4. THE LOWER SOLAR ATMOSPHERE ROBERT J. RUTTEN

    E-Print Network [OSTI]

    Rutten, Rob

    THE LOWER SOLAR ATMOSPHERE ROBERT J. RUTTEN Sterrekundig Instituut, Postbus 80 000, NL3508 TA, Utrecht, The Netherlands Abstract. This "rapporteur" report discusses the solar photosphere and low does not seem to jeopardize precise determination of solar abundances in classical fashion. It is still

  5. Quantitative analysis of infrared contrast enhancement algorithms Seth Weith-Glushko1

    E-Print Network [OSTI]

    Salvaggio, Carl

    , and quantitatively evaluate infrared contrast enhancement algorithms for use in a real-time long-wave infrared imageQuantitative analysis of infrared contrast enhancement algorithms Seth Weith-Glushko1 and Carl range imagery output from current sensors are compressed in a pleasing way for display on lower dynamic

  6. Benchmarking a Scalable Approximate Dynamic Programming Algorithm for Stochastic Control

    E-Print Network [OSTI]

    Powell, Warren B.

    for the optimal control of such power systems are critical for the deployment of reliable and more economical and within 1.34% in stochastic ones, much lower than those obtained using model predictive control. We useBenchmarking a Scalable Approximate Dynamic Programming Algorithm for Stochastic Control

  7. KH Computational Physics-2006 Basic Numerical Algorithms Integration

    E-Print Network [OSTI]

    Glashausser, Charles

    KH Computational Physics- 2006 Basic Numerical Algorithms Integration Numerical integration competing factors one needs to consider speed - number of function evaluations or grid points precision or "smart" meshes with lower order routines Kristjan Haule, 2006 1 #12;KH Computational Physics- 2006

  8. Generation Planning (pbl/generation)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof EnergyFundingGene ControlsCounselGeneral User Generation

  9. Current Legal and Institutional Frameworks for Investing in Lower Carbon Electricity in China

    E-Print Network [OSTI]

    Lang, X; Reiner, David; Neuhoff, Karsten

    ), which is a state-owned and state-controlled enterprise, is the largest electric power planning and engineering corporation in China, having undertaken the survey and design of 60% of power generation and delivery projects in China (CPECC, 2007... 15 generation. To support the plan, policies such as replacing small units by large units and regulations on managing renewable power have been put forward. In principle, financing lower carbon electricity including higher efficiency coal...

  10. Downhole hydraulic seismic generator

    DOE Patents [OSTI]

    Gregory, Danny L. (Corrales, NM); Hardee, Harry C. (Albuquerque, NM); Smallwood, David O. (Albuquerque, NM)

    1992-01-01T23:59:59.000Z

    A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.

  11. Genetic Algorithms Artificial Life

    E-Print Network [OSTI]

    Forrest, Stephanie

    systems tremendously. Likewise, evolution of artificial systems is an important component of artificial) are currently the most promi nent and widely used models of evolution in artificiallife systems. GAs have beenGenetic Algorithms and Artificial Life Melanie Mitchell Santa Fe Institute 1660 Old Pecos Tr

  12. Graph algorithms experimentation facility

    E-Print Network [OSTI]

    Sonom, Donald George

    1994-01-01T23:59:59.000Z

    DRAWADJMAT 2 ~e ~l 2. ~f ~2 2 ~t ~& [g H 2 O? Z Mwd a P d ed d Aid~a sae R 2-BE& T C dbms Fig. 2. External Algorithm Handler The facility is menu driven and implemented as a client to XAGE. Our implementation follows very closely the functionality...

  13. Space Complexity Algorithms & Complexity

    E-Print Network [OSTI]

    Way, Andy

    Space Complexity Algorithms & Complexity Space Complexity Nicolas Stroppa Patrik Lambert - plambert@computing.dcu.ie CA313@Dublin City University. 2008-2009. December 4, 2008 #12;Space Complexity Hierarchy of problems #12;Space Complexity NP-intermediate Languages If P = NP, then are there languages which neither in P

  14. Robust seed selection algorithm for k-means type algorithms

    E-Print Network [OSTI]

    Pavan, K Karteeka; Rao, A V Dattatreya; Sridhar, G R; 10.5121/ijcsit.2011.3513

    2012-01-01T23:59:59.000Z

    Selection of initial seeds greatly affects the quality of the clusters and in k-means type algorithms. Most of the seed selection methods result different results in different independent runs. We propose a single, optimal, outlier insensitive seed selection algorithm for k-means type algorithms as extension to k-means++. The experimental results on synthetic, real and on microarray data sets demonstrated that effectiveness of the new algorithm in producing the clustering results

  15. Lower cost offshore field development utilizing autonomous vehicles

    SciTech Connect (OSTI)

    Frisbie, F.R.; Vie, K.J.; Welch, D.W.

    1996-12-31T23:59:59.000Z

    The offshore oil and gas industry has the requirement to inspect offshore oil and gas pipelines for scour, corrosion and damage as well as inspect and intervene on satellite production facilities. This task is currently performed with Remotely Operated Vehicles (ROV) operated from dynamically positioned (DP) offshore supply or diving support boats. Currently, these tasks are expensive due to the high day rates for DP ships and the slow, umbilical impeded, 1 knot inspection rates of the tethered ROVs, Emerging Autonomous Undersea Vehicle (AUV) technologies offer opportunities to perform these same inspection tasks for 50--75% lower cost, with comparable or improved quality. The new generation LAPV (Linked Autonomous Power Vehicles) will operate from fixed facilities such as TLPs or FPFs and cover an operating field 10 kms in diameter.

  16. Prime number generation and factor elimination

    E-Print Network [OSTI]

    Vineet Kumar

    2014-10-06T23:59:59.000Z

    We have presented a multivariate polynomial function termed as factor elimination function,by which, we can generate prime numbers. This function's mapping behavior can explain the irregularities in the occurrence of prime numbers on the number line. Generally the different categories of prime numbers found till date, satisfy the form of this function. We present some absolute and probabilistic conditions for the primality of the number generated by this method. This function is capable of leading to highly efficient algorithms for generating prime numbers.

  17. 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

  18. High-performance combinatorial algorithms

    E-Print Network [OSTI]

    Pinar, Ali

    2003-01-01T23:59:59.000Z

    mathematics, and high performance computing. The numericalalgorithms on high performance computing platforms.algorithms on high performance computing platforms, which

  19. Lower Valley Energy Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners andLodgepole,Lotsee,Energy InformationMichigan:Lower

  20. Central Ferry Lower Monumental | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.Telluric Survey asWest, NewCenterville, Ohio:Ferry Lower Monumental

  1. Arctic Lower Troposphere Observed Structure (ALTOS)

    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 Office511041cloth DocumentationProductsAlternativeOperational Management » HistoryAugust Lower Troposphere

  2. Lower Colorado River Authority | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |Jilin ZhongdiantouLichuanInformationLoremoJobsPlans:Actions:Lower

  3. Monitoring and Commissioning Verification Algorithms for CHP Systems

    SciTech Connect (OSTI)

    Brambley, Michael R.; Katipamula, Srinivas; Jiang, Wei

    2008-03-31T23:59:59.000Z

    This document provides the algorithms for CHP system performance monitoring and commissioning verification (CxV). It starts by presenting system-level and component-level performance metrics, followed by descriptions of algorithms for performance monitoring and commissioning verification, using the metric presented earlier. Verification of commissioning is accomplished essentially by comparing actual measured performance to benchmarks for performance provided by the system integrator and/or component manufacturers. The results of these comparisons are then automatically interpreted to provide conclusions regarding whether the CHP system and its components have been properly commissioned and where problems are found, guidance is provided for corrections. A discussion of uncertainty handling is then provided, which is followed by a description of how simulations models can be used to generate data for testing the algorithms. A model is described for simulating a CHP system consisting of a micro-turbine, an exhaust-gas heat recovery unit that produces hot water, a absorption chiller and a cooling tower. The process for using this model for generating data for testing the algorithms for a selected set of faults is described. The next section applies the algorithms developed to CHP laboratory and field data to illustrate their use. The report then concludes with a discussion of the need for laboratory testing of the algorithms on a physical CHP systems and identification of the recommended next steps.

  4. QCD Jet Rates with the Inclusive Generalized kt Algorithms

    E-Print Network [OSTI]

    Erik Gerwick; Ben Gripaios; Steffen Schumann; Bryan Webber

    2013-04-15T23:59:59.000Z

    We derive generating functions, valid to next-to-double logarithmic accuracy, for QCD jet rates according to the inclusive forms of the kt, Cambridge/Aachen and anti-kt algorithms, which are equivalent at this level of accuracy. We compare the analytical results with jet rates and average jet multiplicities from the SHERPA event generator, and study the transition between Poisson-like and staircase-like behaviour of jet ratios.

  5. Numerical Simulation of a Natural Circulation Steam Generator

    E-Print Network [OSTI]

    Weinmüller, Ewa B.

    Numerical Simulation of a Natural Circulation Steam Generator W. Linzer \\Lambda , K. Ponweiser circulation steam generator. We focus on a model with a simple geometry consisting of two vertical pipes properties of water and steam. We present a numerical algorithm based on an explicit upwind discretization

  6. Environmental analysis of Lower Pueblo/Lower Los Alamos Canyon, Los Alamos, New Mexico

    SciTech Connect (OSTI)

    Ferenbaugh, R.W.; Buhl, T.E.; Stoker, A.K.; Becker, N.M.; Rodgers, J.C.; Hansen, W.R.

    1994-12-01T23:59:59.000Z

    The radiological survey of the former radioactive waste treatment plant site (TA-45), Acid Canyon, Pueblo Canyon, and Los Alamos Canyon found residual contamination at the site itself and in the channel and banks of Acid, Pueblo, and lower Los Alamos Canyons all the way to the Rio Grande. The largest reservoir of residual radioactivity is in lower Pueblo Canyon, which is on DOE property. However, residual radioactivity does not exceed proposed cleanup criteria in either lower Pueblo or lower Los Alamos Canyons. The three alternatives proposed are (1) to take no action, (2) to construct a sediment trap in lower Pueblo Canyon to prevent further transport of residual radioactivity onto San Ildefonso Indian Pueblo land, and (3) to clean the residual radioactivity from the canyon system. Alternative 2, to cleanup the canyon system, is rejected as a viable alternative. Thousands of truckloads of sediment would have to be removed and disposed of, and this effort is unwarranted by the low levels of contamination present. Residual radioactivity levels, under either present conditions or projected future conditions, will not result in significant radiation doses to persons exposed. Modeling efforts show that future transport activity will not result in any residual radioactivity concentrations higher than those already existing. Thus, although construction of a sediment trap in lower Pueblo Canyon is a viable alternative, this effort also is unwarranted, and the no-action alternative is the preferred alternative.

  7. CAVITY CONTROL ALGORITHM

    SciTech Connect (OSTI)

    Tomasz Plawski, J. Hovater

    2010-09-01T23:59:59.000Z

    A digital low level radio frequency (RF) system typically incorporates either a heterodyne or direct sampling technique, followed by fast ADCs, then an FPGA, and finally a transmitting DAC. This universal platform opens up the possibilities for a variety of control algorithm implementations. The foremost concern for an RF control system is cavity field stability, and to meet the required quality of regulation, the chosen control system needs to have sufficient feedback gain. In this paper we will investigate the effectiveness of the regulation for three basic control system algorithms: I&Q (In-phase and Quadrature), Amplitude & Phase and digital SEL (Self Exciting Loop) along with the example of the Jefferson Lab 12 GeV cavity field control system.

  8. Diagnosis of Lower Hybrid on MST

    SciTech Connect (OSTI)

    Burke, D. R.; Goetz, J. A.; Kaufman, M. C.; Almagri, A. F.; Anderson, J. K.; Forest, C. B.; Prager, S. C. [University of Wisconsin--Madison, Madison WI 53706 (United States)

    2007-09-28T23:59:59.000Z

    RF driven current has never been demonstrated in a Reversed Field Pinch. Recently the lower hybrid system on the Madison Symmetric Torus reached a new operating regime. This upgrade allows RF powers of up to 5% of the Ohmic input power to be injected. It is therefore anticipated that the lower hybrid system is on the threshold of producing meaningful changes to the RFP equilibrium. A diagnostic set is under development to facilitate the study of such changes and lay the foundation for near megawatt operations. Many measurements are being studied for viability. These include electron cyclotron emission, examinations of bulk ion and electron heating, surface perturbation pickup coils, magnetic probe measurements, and Langmuir probe measurements. In addition, several x-ray diagnostics are in operation: pulse height analysis is performed on detector arrays to determine the 5-200 keV spectrum. An insertable target probe is available to create x-rays from fast electrons. Tomographic inversion of 2-D Soft x-ray detectors yields equilibrium information through island structure. Results from experiments with source power up to 225 kW will be presented. Preliminary results from CQL3D Fokker-Planck simulations will also be presented.

  9. Stability of Coupling Algorithms

    E-Print Network [OSTI]

    Akkasale, Abhineeth

    2012-07-16T23:59:59.000Z

    of Committee, K. B. Nakshatrala Committee Members, Steve Suh J. N. Reddy Head of Department, Dennis O?Neal May 2011 Major Subject: Mechanical Engineering iii ABSTRACT Stability of Coupling Algorithms. (May 2011) Abhineeth Akkasale, B.E., Bangalore... step. iv To Amma and Anna v ACKNOWLEDGMENTS First and foremost, I thank Dr. Kalyana B. Nakshatrala for being an incredible advisor and for his time and patience in constantly guiding me through my research. I am indebted to him for his guidance...

  10. Lower Snake River Subbasin Management Plan WDFW March 2004 1

    E-Print Network [OSTI]

    Lower Granite pool and the Palouse and Tucannon Rivers join near the midpoint of Lower Monumental Ecoregion. Subbasin Land Ownership Palouse Lower Snake Tucannon Asotin Walla Walla Total Federal Lands 1 68

  11. PVT Analysis With A Deconvolution Algorithm

    SciTech Connect (OSTI)

    Kouzes, Richard T.

    2011-02-01T23:59:59.000Z

    Polyvinyl Toluene (PVT) plastic scintillator is the most common gamma ray detector material used for large systems when only gross counting is needed because of its low cost, robustness, and relative sensitivity. PVT does provide some energy information about the incident photons, as has been demonstrated through the development of Energy Windowing analysis. There is a more sophisticated energy analysis algorithm developed by Symetrica, Inc., and they have demonstrated the application of their deconvolution algorithm to PVT with very promising results. The thrust of such a deconvolution algorithm used with PVT is to allow for identification and rejection of naturally occurring radioactive material, reducing alarm rates, rather than the complete identification of all radionuclides, which is the goal of spectroscopic portal monitors. Under this condition, there could be a significant increase in sensitivity to threat materials. The advantage of this approach is an enhancement to the low cost, robust detection capability of PVT-based radiation portal monitor systems. The success of this method could provide an inexpensive upgrade path for a large number of deployed PVT-based systems to provide significantly improved capability at a much lower cost than deployment of NaI(Tl)-based systems of comparable sensitivity.

  12. Large scale tracking algorithms.

    SciTech Connect (OSTI)

    Hansen, Ross L.; Love, Joshua Alan; Melgaard, David Kennett; Karelitz, David B.; Pitts, Todd Alan; Zollweg, Joshua David; Anderson, Dylan Z.; Nandy, Prabal; Whitlow, Gary L.; Bender, Daniel A.; Byrne, Raymond Harry

    2015-01-01T23:59:59.000Z

    Low signal-to-noise data processing algorithms for improved detection, tracking, discrimination and situational threat assessment are a key research challenge. As sensor technologies progress, the number of pixels will increase signi cantly. This will result in increased resolution, which could improve object discrimination, but unfortunately, will also result in a significant increase in the number of potential targets to track. Many tracking techniques, like multi-hypothesis trackers, suffer from a combinatorial explosion as the number of potential targets increase. As the resolution increases, the phenomenology applied towards detection algorithms also changes. For low resolution sensors, "blob" tracking is the norm. For higher resolution data, additional information may be employed in the detection and classfication steps. The most challenging scenarios are those where the targets cannot be fully resolved, yet must be tracked and distinguished for neighboring closely spaced objects. Tracking vehicles in an urban environment is an example of such a challenging scenario. This report evaluates several potential tracking algorithms for large-scale tracking in an urban environment.

  13. Distributed algorithms for mobile ad hoc networks

    E-Print Network [OSTI]

    Malpani, Navneet

    2001-01-01T23:59:59.000Z

    We first present two new leader election algorithms for mobile ad hoc networks. The algorithms ensure that eventually each connected component of the topology graph has exactly one leader. The algorithms are based on a routing algorithm called TORA...

  14. Algorithm PREQN: Fortran 77 Subroutines for Preconditioning the Conjugate Gradient Method

    E-Print Network [OSTI]

    Nocedal, Jorge

    Algorithm PREQN: Fortran 77 Subroutines for Preconditioning the Conjugate Gradient Method Jos subroutines for automatically generating pre conditioners for the conjugate gradient method. It is designed. Additional Key Words and Phrases: Preconditioning, conjugate gradient method, quasi Newton method, Hessian

  15. Jitter-aware time-frequency resource allocation and packing algorithm

    E-Print Network [OSTI]

    Yao, Huan

    One of the main components of the next generation protected military satellite communication systems is dynamic bandwidth resource allocation (DBRA). A centralized DBRA algorithm on the satellite dynamically grants terminals ...

  16. Optimal Algorithms for GSM Viterbi Modules M.Sc. Student

    E-Print Network [OSTI]

    design of the 3rd-Generation Global System for Mobile communica- tions(GSM 3G) unit's channel code soft-decision bits. The power and area optimization is only considered at the algorithm communication methodology . . . . . . . . . . . . . . . . . . . . . . . . 16 2.1.1 Data transmission

  17. Optimizing Ballast Design of Wave Energy Converters Using Evolutionary Algorithms

    E-Print Network [OSTI]

    Tumer, Kagan

    Optimizing Ballast Design of Wave Energy Converters Using Evolutionary Algorithms Mitch Colby, 97331 kagan.tumer@oregonstate.edu ABSTRACT Wave energy converters promise to be a viable alternative the ballast geometry of a wave energy genera- tor using a two step process. First, we generate a function

  18. Learning Active Basis Models by EM-Type Algorithms

    E-Print Network [OSTI]

    Wu, Ying Nian

    Learning Active Basis Models by EM-Type Algorithms Zhangzhang Si1, Haifeng Gong1,2, Song-Chun Zhu1, and scales as latent variables into the image generation process, and learn the template by EM-type scheme for learning image templates of object categories where the learning is not fully supervised. We

  19. Constrained Multi-Objective Optimization Using Steady State Genetic Algorithms

    E-Print Network [OSTI]

    Rasheed, Khaled

    evaluations in an optimization. For such problems steady state GAs may perform better than generational GAs constrained multi-objective optimization problems using steady state GAs. These methods are intended method called Objective Exchange Genetic Algorithm for Design Optimization (OEGADO) runs several GAs

  20. The implementation of the Lower Silver Creek watershed project

    E-Print Network [OSTI]

    Keenan, Christina; McPherson, Mariah

    2003-01-01T23:59:59.000Z

    Measures on Lower Silver Creek Interim Project. San Jose,Valley Water District. May 1978. Lower Silver Creek, LakeCunningham, Thompson Creek Planning Survey consisting of

  1. Energy Department Announces $9 Million to Lower Costs, Increase...

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

    Lower Costs, Increase Performance of Solar Energy Systems Energy Department Announces 9 Million to Lower Costs, Increase Performance of Solar Energy Systems December 2, 2014 -...

  2. Light water reactor lower head failure analysis

    SciTech Connect (OSTI)

    Rempe, J.L.; Chavez, S.A.; Thinnes, G.L. [EG and G Idaho, Inc., Idaho Falls, ID (United States)] [and others

    1993-10-01T23:59:59.000Z

    This document presents the results from a US Nuclear Regulatory Commission-sponsored research program to investigate the mode and timing of vessel lower head failure. Major objectives of the analysis were to identify plausible failure mechanisms and to develop a method for determining which failure mode would occur first in different light water reactor designs and accident conditions. Failure mechanisms, such as tube ejection, tube rupture, global vessel failure, and localized vessel creep rupture, were studied. Newly developed models and existing models were applied to predict which failure mechanism would occur first in various severe accident scenarios. So that a broader range of conditions could be considered simultaneously, calculations relied heavily on models with closed-form or simplified numerical solution techniques. Finite element techniques-were employed for analytical model verification and examining more detailed phenomena. High-temperature creep and tensile data were obtained for predicting vessel and penetration structural response.

  3. Understanding and Managing Generation Y

    E-Print Network [OSTI]

    Wallace, Kevin

    2007-12-14T23:59:59.000Z

    There are four generations in the workplace today; they consist of the Silent Generation, Baby Boom Generation, Generation X, and Generation Y. Generation Y, being the newest generation, is the least understood generation although marketers...

  4. Nonlinear evolution of lower hybrid waves Charles F. F. Karney

    E-Print Network [OSTI]

    Karney, Charles

    problem. With typical fields for lower hybrid heating of a tokamak, it is found that large reflections can occur close to the edge of the plasma. I. INTRODUCTION In typical lower hybrid heating schemes, lower hy, and determine the consequences of our results for lower hybrid heating. The plan of this paper i s a s follows

  5. Generation of a suite of 3D computer-generated breast phantoms from a limited set of human subject data

    SciTech Connect (OSTI)

    Hsu, Christina M. L. [Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708 and Carl E. Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705 (United States); Palmeri, Mark L. [Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708 (United States); Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina 27710 (United States); Segars, W. Paul [Carl E. Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705 (United States); Department of Radiology, Duke University Medical Center, Durham, North Carolina 27710 (United States); Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708 (United States); Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Veress, Alexander I. [Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195 (United States); Dobbins, James T. III [Carl E. Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705 (United States); Department of Radiology, Duke University Medical Center, Durham, North Carolina 27710 (United States); Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708 (United States); Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Department of Physics, Duke University, Durham, North Carolina 27708 (United States)

    2013-04-15T23:59:59.000Z

    Purpose: The authors previously reported on a three-dimensional computer-generated breast phantom, based on empirical human image data, including a realistic finite-element based compression model that was capable of simulating multimodality imaging data. The computerized breast phantoms are a hybrid of two phantom generation techniques, combining empirical breast CT (bCT) data with flexible computer graphics techniques. However, to date, these phantoms have been based on single human subjects. In this paper, the authors report on a new method to generate multiple phantoms, simulating additional subjects from the limited set of original dedicated breast CT data. The authors developed an image morphing technique to construct new phantoms by gradually transitioning between two human subject datasets, with the potential to generate hundreds of additional pseudoindependent phantoms from the limited bCT cases. The authors conducted a preliminary subjective assessment with a limited number of observers (n= 4) to illustrate how realistic the simulated images generated with the pseudoindependent phantoms appeared. Methods: Several mesh-based geometric transformations were developed to generate distorted breast datasets from the original human subject data. Segmented bCT data from two different human subjects were used as the 'base' and 'target' for morphing. Several combinations of transformations were applied to morph between the 'base' and 'target' datasets such as changing the breast shape, rotating the glandular data, and changing the distribution of the glandular tissue. Following the morphing, regions of skin and fat were assigned to the morphed dataset in order to appropriately assign mechanical properties during the compression simulation. The resulting morphed breast was compressed using a finite element algorithm and simulated mammograms were generated using techniques described previously. Sixty-two simulated mammograms, generated from morphing three human subject datasets, were used in a preliminary observer evaluation where four board certified breast radiologists with varying amounts of experience ranked the level of realism (from 1 ='fake' to 10 ='real') of the simulated images. Results: The morphing technique was able to successfully generate new and unique morphed datasets from the original human subject data. The radiologists evaluated the realism of simulated mammograms generated from the morphed and unmorphed human subject datasets and scored the realism with an average ranking of 5.87 {+-} 1.99, confirming that overall the phantom image datasets appeared more 'real' than 'fake.' Moreover, there was not a significant difference (p > 0.1) between the realism of the unmorphed datasets (6.0 {+-} 1.95) compared to the morphed datasets (5.86 {+-} 1.99). Three of the four observers had overall average rankings of 6.89 {+-} 0.89, 6.9 {+-} 1.24, 6.76 {+-} 1.22, whereas the fourth observer ranked them noticeably lower at 2.94 {+-} 0.7. Conclusions: This work presents a technique that can be used to generate a suite of realistic computerized breast phantoms from a limited number of human subjects. This suite of flexible breast phantoms can be used for multimodality imaging research to provide a known truth while concurrently producing realistic simulated imaging data.

  6. Simulations of lower-hybrid coupling in the Madison Symmetric Torus

    SciTech Connect (OSTI)

    Carlsson, Johan; Smithe, David [Tech-X Corporation, Boulder, Colorado (United States); Carter, Mark [Oak Ridge National Laboratory, Oak Ridge, Tennessee (United States); Kaufman, Mike [University of Wisconsin, Madison, Wisconsin (United States)

    2009-11-26T23:59:59.000Z

    Simulations of Lower Hybrid (LH) coupling in the Madison Symmetric Torus (MST) Reversed Field Pinch (RFP) will be presented. Due to the special requirements of the RFP configuration (tight-fitting conducting shell in which only minimal portholes are acceptable), an unusual interdigital line slow-wave antenna is used, mounted below the mid plane on the inboard side. A number of codes are used, including VORPAL, RANT3D/AORSA1D-H and MWS, each solving different equations and using different algorithms. Output from the different codes will be presented and compared to verify the simulation results.

  7. Shortest Path Algorithms: A Comparison

    E-Print Network [OSTI]

    Golden, Bruce L., 1950-

    In this note we present some computational evidence to suggest that a version of Bellman's shortest path algorithm outperforms Treesort- Dijkstra's for a certain class of networks.

  8. Hedge Algorithm and Subgradient Methods

    E-Print Network [OSTI]

    2010-10-05T23:59:59.000Z

    standard complexity results on subgradient algorithms allows us to derive optimal parameters ...... the American Statistical Association, 58:1330, 1963. 1In fact...

  9. Pressurized circulating fluidized-bed combustion for power generation

    SciTech Connect (OSTI)

    Weimer, R.F.

    1995-08-01T23:59:59.000Z

    Second-generation Pressurized Circulating Fluidized Bed Combustion (PCFBC) is the culmination of years of effort in the development of a new generation of power plants which can operate on lower-quality fuels with substantially improved efficiencies, meet environmental requirements, and provide a lower cost of electricity. Air Products was selected in the DOE Clean Coal Technology Round V program to build, own, and operate the first commercial power plant using second-generation PCFBC technology, to be located at an Air Products chemicals manufacturing facility in Calvert City, Kentucky. This paper describes the second-generation PCFBC concept and its critical technology components.

  10. Lecture 24: Parallel Algorithms I Topics: sort and matrix algorithms

    E-Print Network [OSTI]

    Balasubramonian, Rajeev

    1 Lecture 24: Parallel Algorithms I Topics: sort and matrix algorithms #12;2 Processor Model a single clock (asynchronous designs will require minor modifications) At each clock, processors receive input output #12;4 Control at Each Processor Each processor stores the minimum number it has seen

  11. Fast parallel algorithms for short-range molecular dynamics

    SciTech Connect (OSTI)

    Plimpton, S.

    1993-05-01T23:59:59.000Z

    Three parallel algorithms for classical molecular dynamics are presented. The first assigns each processor a subset of atoms; the second assigns each a subset of inter-atomic forces to compute; the third assigns each a fixed spatial region. The algorithms are suitable for molecular dynamics models which can be difficult to parallelize efficiently -- those with short-range forces where the neighbors of each atom change rapidly. They can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors. The algorithms are tested on a standard Lennard-Jones benchmark problem for system sizes ranging from 500 to 10,000,000 atoms on three parallel supercomputers, the nCUBE 2, Intel iPSC/860, and Intel Delta. Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems. For large problems, the spatial algorithm achieves parallel efficiencies of 90% and the Intel Delta performs about 30 times faster than a single Y-MP processor and 12 times faster than a single C90 processor. Trade-offs between the three algorithms and guidelines for adapting them to more complex molecular dynamics simulations are also discussed.

  12. Janis-Newman algorithm: simplifications and gauge field transformation

    E-Print Network [OSTI]

    Harold Erbin

    2015-02-16T23:59:59.000Z

    The Janis-Newman algorithm is an old but very powerful tool to generate rotating solutions from static ones through a set of complex coordinate transformations. Several solutions have been derived in this way, including solutions with gauge fields. However, the transformation of the latter was so far always postulated as an ad hoc result. In this paper we propose a generalization of the procedure, extending it to the transformation of the gauge field. We also present a simplification of the algorithm due to G. Giampieri. We illustrate our prescription on the Kerr-Newman solution.

  13. Generation gaps in engineering?

    E-Print Network [OSTI]

    Kim, David J. (David Jinwoo)

    2008-01-01T23:59:59.000Z

    There is much enthusiastic debate on the topic of generation gaps in the workplace today; what the generational differences are, how to address the apparent challenges, and if the generations themselves are even real. ...

  14. Dual-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P. [National Renewable Energy Lab., Golden, CO (United States)] [National Renewable Energy Lab., Golden, CO (United States); Handman, D. [Flowind Corp., San Rafael, CA (United States)] [Flowind Corp., San Rafael, CA (United States)

    1996-10-01T23:59:59.000Z

    Induction generator has been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using a dual output drive train to drive two induction generators with two different rated speeds. With single-speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. Operation at maximum Cp can occur only at a single wind speed. However, if the wind speed.varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative which captures more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine is investigated. Annual energy production is compared between single-speed and dual-speed operation. One type of control algorithm for dual-speed operation is proposed. Some results from a dynamic simulation will be presented to show how the control algorithm works as the wind turbine is exposed to varying wind speeds.

  15. Volume Decomposition and Feature Recognition for Hexahedral Mesh Generation

    SciTech Connect (OSTI)

    GADH,RAJIT; LU,YONG; TAUTGES,TIMOTHY J.

    1999-09-27T23:59:59.000Z

    Considerable progress has been made on automatic hexahedral mesh generation in recent years. Several automatic meshing algorithms have proven to be very reliable on certain classes of geometry. While it is always worth pursuing general algorithms viable on more general geometry, a combination of the well-established algorithms is ready to take on classes of complicated geometry. By partitioning the entire geometry into meshable pieces matched with appropriate meshing algorithm the original geometry becomes meshable and may achieve better mesh quality. Each meshable portion is recognized as a meshing feature. This paper, which is a part of the feature based meshing methodology, presents the work on shape recognition and volume decomposition to automatically decompose a CAD model into meshable volumes. There are four phases in this approach: (1) Feature Determination to extinct decomposition features, (2) Cutting Surfaces Generation to form the ''tailored'' cutting surfaces, (3) Body Decomposition to get the imprinted volumes; and (4) Meshing Algorithm Assignment to match volumes decomposed with appropriate meshing algorithms. The feature determination procedure is based on the CLoop feature recognition algorithm that is extended to be more general. Results are demonstrated over several parts with complicated topology and geometry.

  16. Small Generator Aggregation (Maine)

    Broader source: Energy.gov [DOE]

    This section establishes requirements for electricity providers to purchase electricity from small generators, with the goal of ensuring that small electricity generators (those with a nameplate...

  17. A Novel Robust Communication Algorithm for Distributed Secondary Control of Islanded

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    A Novel Robust Communication Algorithm for Distributed Secondary Control of Islanded Micro of distributed generators (DGs) and loads, placed in low voltage (LV) and medium voltage (MV) distribution transmission/distribution losses and preventing electrical network congestion by shifting the generation closer

  18. Implicit Alternative Splicing for Genetic Algorithms Philipp Rohlfshagen and John A. Bullinaria

    E-Print Network [OSTI]

    Bullinaria, John

    allowing the population's average fitness to increase from one generation to the next. In other words, GAs the selection pressure [1]. In either case, such methods must ensure that the generation of diversity does in genetic algorithms (GAs). Our method, called implicit alternative splicing (iAS), is repeatedly applied

  19. Position: Forestry Intern Location: Lower Suwannee National Wildlife Refuge

    E-Print Network [OSTI]

    Mazzotti, Frank

    Position: Forestry Intern Location: Lower Suwannee National Wildlife Refuge Application Process: Student Conservation Association (SCA) Forestry and biological Wildlife Refuge. This forestry position will be mostly field work within the Lower

  20. Albertiana 25 Report on the Lower Triassic of

    E-Print Network [OSTI]

    Tong, Jinnan

    GSSPs of the Triassic. The GSSP of the PTB is located in a protected quarry at Meishan, Changxing County the uppermost of the Lower Triassic was eroded off. Moreover, the Lower Tri- assic in Meishan area is made

  1. Energy Department Announces $3 Million to Lower Cost of Geothermal...

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

    Lower Cost of Geothermal Energy and Boost U.S. Supply of Critical Materials Energy Department Announces 3 Million to Lower Cost of Geothermal Energy and Boost U.S. Supply of...

  2. Fact Sheet - Myths & Facts about the lower Snake River dams ...

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

    Myths and facts about the lower Snake River dams MYTH: The four lower Snake River dams are low value. FACT: It costs about 5 per megawatt-hour to produce power at the dams. The...

  3. The effects of orthotics on lower extremity variability during running

    E-Print Network [OSTI]

    Brethauer, Samuel

    2011-12-31T23:59:59.000Z

    Introduction: Abnormal foot mechanics may affect kinematics of the lower extremity, predisposing individuals to injury. Foot orthotics are often used to alter lower extremity mechanics. Little research is available examining ...

  4. Device Independent Random Number Generation

    E-Print Network [OSTI]

    Mataj Pivoluska; Martin Plesch

    2015-02-23T23:59:59.000Z

    Randomness is an invaluable resource in today's life with a broad use reaching from numerical simulations through randomized algorithms to cryptography. However, on the classical level no true randomness is available and even the use of simple quantum devices in a prepare-measure setting suffers from lack of stability and controllability. This gave rise to a group of quantum protocols that provide randomness certified by classical statistical tests -- Device Independent Quantum Random Number Generators. In this paper we review the most relevant results in this field, which allow the production of almost perfect randomness with help of quantum devices, supplemented with an arbitrary weak source of additional randomness. This is in fact the best one could hope for to achieve, as with no starting randomness (corresponding to no free will in a different concept) even a quantum world would have a fully deterministic description.

  5. Utility Solar Generation Valuation Methods

    SciTech Connect (OSTI)

    Hansen, Thomas N.; Dion, Phillip J.

    2009-06-30T23:59:59.000Z

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

  6. Production of highly unidirectional lower-hybrid waves

    SciTech Connect (OSTI)

    McWilliams, R.; Okubo, M.; Platt, R.C.; Sheehan, D.P.

    1985-01-01T23:59:59.000Z

    The development of a highly unidirectional lower-hybrid wave source would improve the electron current drive efficiency in tokamaks. Lower-hybrid waves launched from a phased wave array are shown to be reflected from a grid placed in a cold, low-density plasma. The antenna--grid combination results in highly unidirectional lower-hybrid waves.

  7. Smolt Monitoring at the Head of Lower Granite Reservoir and Lower Granite Dam, 2005 Annual Report.

    SciTech Connect (OSTI)

    Buettner, Edwin W.; Putnam, Scott A. [Idaho Department of Fish and Game

    2009-02-18T23:59:59.000Z

    This project monitored the daily passage of Chinook salmon Oncorhynchus tshawytscha, steelhead trout O. mykiss, and sockeye salmon O. nerka smolts during the 2005 spring out-migration at migrant traps on the Snake River and Salmon River. In 2005 fish management agencies released significant numbers of hatchery Chinook salmon and steelhead trout above Lower Granite Dam that were not marked with a fin clip or coded-wire tag. Generally, the age-1 and older fish were distinguishable from wild fish by the occurrence of fin erosion. Age-0 Chinook salmon are more difficult to distinguish between wild and non-adclipped hatchery fish and therefore classified as unknown rearing. The total annual hatchery spring/summer Chinook salmon catch at the Snake River trap was 0.34 times greater in 2005 than in 2004. The wild spring/summer Chinook catch was 0.34 times less than the previous year. Hatchery steelhead trout catch was 0.67 times less than in 2004. Wild steelhead trout catch was 0.72 times less than the previous year. The Snake River trap collected 1,152 age-0 Chinook salmon of unknown rearing. During 2005, the Snake River trap captured 219 hatchery and 44 wild/natural sockeye salmon and 110 coho salmon O. kisutch of unknown rearing. Differences in trap catch between years are due to fluctuations not only in smolt production, but also differences in trap efficiency and duration of trap operation associated with flow. Trap operations began on March 6 and were terminated on June 3. The trap was out of operation for a total of one day due to heavy debris. FPC requested that the trap be restarted on June 15 through June 22 to collect and PIT tag age-0 Chinook salmon. Hatchery Chinook salmon catch at the Salmon River trap was 1.06 times greater and wild Chinook salmon catch was 1.26 times greater than in 2004. The hatchery steelhead trout collection in 2005 was 1.41 times greater and wild steelhead trout collection was 1.27 times greater than the previous year. Trap operations began on March 6 and were terminated on May 17 due to high flows. There were two days when the trap was taken out of service because of mechanical failure. Travel time (d) and migration rate (km/d) through Lower Granite Reservoir for passive integrated transponder (PIT) tagged Chinook salmon and steelhead trout marked at the Snake River trap were affected by discharge. Statistical analysis of 2005 data detected a relation between migration rate and discharge for hatchery Chinook but was unable to detect a relation for wild Chinook. The inability to detect a migration rate discharge relation for wild Chinook salmon was caused by a lack of data. For hatchery Chinook salmon there was a 1.8-fold increase in migration rate between 50 and 100 kcfs. For steelhead trout tagged at the Snake River trap, statistical analysis detected a significant relation between migration rate and lower Granite Reservoir inflow discharge. For hatchery and wild steelhead trout, there was a 2.2-fold and a 2.2-fold increase in migration rate, respectively, between 50 and 100 kcfs. Travel time and migration rate to Lower Granite Dam for fish marked at the Salmon River trap were calculated. Statistical analysis of the 2005 data detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge for hatchery Chinook salmon, wild Chinook salmon, hatchery steelhead trout, and wild steelhead trout. Migration rate increased 4.2-fold for hatchery Chinook salmon, 2.9-fold for wild Chinook salmon and 2.5-fold for hatchery steelhead, and 1.7-fold for wild steelhead as discharge increased between 50 kcfs and 100 kcfs. Fish tagged with PIT tags at the Snake River and Salmon River traps were interrogated at four dams with PIT tag detection systems (Lower Granite, Little Goose, Lower Monumental and McNary dams). Because of the addition of the fourth interrogation site (Lower Monumental) in 1993 and the installation of the Removable Spillway Weir at Lower Granite Dam in 2001, caution must be used in comparing cumulative interrogation data. Cumulative interrogations at the fo

  8. Generation to Generation: The Heart of Family Medicine

    E-Print Network [OSTI]

    Winter, Robin O

    2012-01-01T23:59:59.000Z

    Ageism in the Workplace. Generations Spring, 5. Westman,of caring for multiple generations simultaneously. StronglyGeneration to Generation: The Heart of Family Medicine

  9. Gamma ray generator

    DOE Patents [OSTI]

    Firestone, Richard B; Reijonen, Jani

    2014-05-27T23:59:59.000Z

    An embodiment of a gamma ray generator includes a neutron generator and a moderator. The moderator is coupled to the neutron generator. The moderator includes a neutron capture material. In operation, the neutron generator produces neutrons and the neutron capture material captures at least some of the neutrons to produces gamma rays. An application of the gamma ray generator is as a source of gamma rays for calibration of gamma ray detectors.

  10. Smolt Monitoring at the Head of Lower Granite Reservoir and Lower Granite Dam, 2002 Annual Report.

    SciTech Connect (OSTI)

    Buettner, Edwin W.; Putnam, Scott A. [Idaho Department of Fish and Game

    2009-02-18T23:59:59.000Z

    This project monitored the daily passage of Chinook salmon Oncorhynchus tshawytscha, steelhead trout O. mykiss, and sockeye salmon smolts O. nerka during the 2002 spring out-migration at migrant traps on the Snake River and Salmon River. In 2002 fish management agencies released significant numbers of hatchery Chinook salmon and steelhead trout above Lower Granite Dam that were not marked with a fin clip or coded-wire tag. Generally, these fish were distinguishable from wild fish by the occurrence of fin erosion. Total annual hatchery Chinook salmon catch at the Snake River trap was 11.4 times greater in 2002 than in 2001. The wild Chinook catch was 15.5 times greater than the previous year. Hatchery steelhead trout catch was 2.9 times greater than in 2001. Wild steelhead trout catch was 2.8 times greater than the previous year. The Snake River trap collected 3,996 age-0 Chinook salmon of unknown rearing. During 2002, the Snake River trap captured 69 hatchery and 235 wild/natural sockeye salmon and 114 hatchery coho salmon O. kisutch. Differences in trap catch between years are due to fluctuations not only in smolt production, but also differences in trap efficiency and duration of trap operation associated with flow. The significant increase in catch in 2002 was due to a 3.1 fold increase in hatchery Chinook production and a more normal spring runoff. Trap operations began on March 10 and were terminated on June 7. The trap was out of operation for a total of four days due to mechanical failure or debris. Hatchery Chinook salmon catch at the Salmon River trap was 4.2 times greater and wild Chinook salmon catch was 2.4 times greater than in 2001. The hatchery steelhead trout collection in 2002 was 81% of the 2001 numbers. Wild steelhead trout collection in 2002 was 81% of the previous year's catch. Trap operations began on March 10 and were terminated on May 29 due to high flows. The trap was out of operation for four days due to high flow or debris. The increase in hatchery Chinook catch in 2002 was due to a 3.1 fold increase in hatchery production and differences in flow between years. Changes in hatchery and wild steelhead catch are probably due to differences in flow between years. Travel time (d) and migration rate (km/d) through Lower Granite Reservoir for PIT-tagged Chinook salmon and steelhead trout marked at the Snake River trap were affected by discharge. Statistical analysis of 2002 data detected a relation between migration rate and discharge for hatchery and wild Chinook salmon. For hatchery and wild Chinook salmon there was a 4.7-fold and a 3.7-fold increase in migration rate, respectively, between 50 and 100 kcfs. For steelhead trout tagged at the Snake River trap, statistical analysis detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge. For hatchery and wild steelhead trout, there was a 1.8-fold and a 1.7-fold increase in migration rate, respectively, between 50 and 100 kcfs. Travel time and migration rate to Lower Granite Dam for fish marked at the Salmon River trap were calculated. Statistical analysis of the 2002 data detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge for wild Chinook salmon and hatchery steelhead trout. The analysis was unable to detect a relation between migration rate and discharge for hatchery Chinook salmon. The lack of a detectable relation was probably a result of the migration rate data being spread over a very narrow range of discharge. Not enough data were available to perform the analysis for wild steelhead trout. Migration rate increased 4.3-fold for wild Chinook salmon and 2.2-fold for hatchery steelhead between 50 kcfs and 100 kcfs. Fish tagged with passive integrated transponder (PIT) tags at the Snake River trap were interrogated at four dams with PIT tag detection systems (Lower Granite, Little Goose, Lower Monumental, and McNary dams). Because of the addition of the fourth interrogation site (Lower Monumental) in 1993 and the installation of the Removable Spillway Weir at

  11. Smolt Monitoring at the Head of Lower Granite Reservoir and Lower Granite Dam, 2004 Annual Report.

    SciTech Connect (OSTI)

    Buettner, Edwin W.; Putnam, Scott A. [Idaho Department of Fish and Game

    2009-02-18T23:59:59.000Z

    This project monitored the daily passage of Chinook salmon Oncorhynchus tshawytscha, steelhead trout O. mykiss, and sockeye salmon O. nerka smolts during the 2004 spring out-migration at migrant traps on the Snake River and Salmon River. In 2004 fish management agencies released significant numbers of hatchery Chinook salmon and steelhead trout above Lower Granite Dam that were not marked with a fin clip or coded-wire tag. Generally, these fish were distinguishable from wild fish by the occurrence of fin erosion. Total annual hatchery Chinook salmon catch at the Snake River trap was 1.1 times greater in 2004 than in 2003. The wild Chinook catch was 1.1 times greater than the previous year. Hatchery steelhead trout catch was 1.2 times greater than in 2003. Wild steelhead trout catch was 1.6 times greater than the previous year. The Snake River trap collected 978 age-0 Chinook salmon of unknown rearing. During 2004, the Snake River trap captured 23 hatchery and 18 wild/natural sockeye salmon and 60 coho salmon O. kisutch of unknown rearing. Differences in trap catch between years are due to fluctuations not only in smolt production, but also differences in trap efficiency and duration of trap operation associated with flow. Trap operations began on March 7 and were terminated on June 4. The trap was out of operation for a total of zero days due to mechanical failure or debris. Hatchery Chinook salmon catch at the Salmon River trap was 10.8% less and wild Chinook salmon catch was 19.0% less than in 2003. The hatchery steelhead trout collection in 2004 was 20.0% less and wild steelhead trout collection was 22.3% less than the previous year. Trap operations began on March 7 and were terminated on May 28 due to high flows. There were two days when the trap was taken out of service because wild Chinook catch was very low, hatchery Chinook catch was very high, and the weekly quota of PIT tagged hatchery Chinook had been met. Travel time (d) and migration rate (km/d) through Lower Granite Reservoir for PIT-tagged Chinook salmon and steelhead trout marked at the Snake River trap were affected by discharge. Statistical analysis of 2004 data detected a relation between migration rate and discharge for wild Chinook salmon but was unable to detect a relation for hatchery Chinook. The inability to detect a migration rate discharge relation for hatchery Chinook salmon was caused by age-0 fall Chinook being mixed in with the age 1 Chinook. Age-0 fall Chinook migrate much slower than age-1 Chinook, which would confuse the ability to detect the migration rate discharge relation. When several groups, which consisted of significant numbers of age-0 Chinook salmon, were removed from the analysis a relation was detected. For hatchery and wild Chinook salmon there was a 2.8-fold and a 2.4-fold increase in migration rate, respectively, between 50 and 100 kcfs. For steelhead trout tagged at the Snake River trap, statistical analysis detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge. For hatchery and wild steelhead trout, there was a 2.3-fold and a 2.0-fold increase in migration rate, respectively, between 50 and 100 kcfs. Travel time and migration rate to Lower Granite Dam for fish marked at the Salmon River trap were calculated. Statistical analysis of the 2004 data detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge for hatchery Chinook salmon, wild Chinook salmon and hatchery steelhead trout. Not enough data were available to perform the analysis for wild steelhead trout. Migration rate increased 7.0-fold for hatchery Chinook salmon, 4.7-fold for wild Chinook salmon and 3.8-fold for hatchery steelhead as discharge increased between 50 kcfs and 100 kcfs. Fish tagged with passive integrated transponder (PIT) tags at the Snake River and Salmon River traps were interrogated at four dams with PIT tag detection systems (Lower Granite, Little Goose, Lower Monumental, and McNary dams). Because of the addition of the fourth interrogation site (Lower Monume

  12. ice-surface lowering or some regional climate change induced by ice-surface lowering. If attributed solely to a

    E-Print Network [OSTI]

    Flint-Garcia, Sherry

    ice-surface lowering or some regional climate change induced by ice-surface lowering. If attributed solely to a change in ice-surface elevation, the 3 to 4C warming at Siple Dome (16) would indicate 500 to 650 m of ice-surface lowering, assuming a free atmospheric lapse rate of 6C per 1000 m

  13. Secret-key generation with correlated sources and noisy channels

    E-Print Network [OSTI]

    Khisti, Ashish

    Secret-key generation with correlated sources and noisy channels Ashish Khisti EECS Dept. MIT for secret-key generation between remote terminals is considered. The sender communicates to the receiver discrete memoryless sources. Lower and upper bounds for the secret-key rate are presented and shown

  14. Secret-Key Generation using Correlated Sources and Channels

    E-Print Network [OSTI]

    Khisti, Ashish

    1 Secret-Key Generation using Correlated Sources and Channels Ashish Khisti, Member, IEEE of generating a shared secret key between two terminals in a joint source-channel setup -- the terminals to correlated discrete memoryless source sequences. We establish lower and upper bounds on the secret

  15. STEADY-STATE FLAMMABLE GAS RELEASE RATE CALCULATION AND LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE

    SciTech Connect (OSTI)

    HU TA

    2007-10-26T23:59:59.000Z

    Assess the steady-state flammability level at normal and off-normal ventilation conditions. The methodology of flammability analysis for Hanford tank waste is developed. The hydrogen generation rate model was applied to calculate the gas generation rate for 177 tanks. Flammability concentrations and the time to reach 25% and 100% of the lower flammability limit, and the minimum ventilation rate to keep from 100 of the LFL are calculated for 177 tanks at various scenarios.

  16. Cylindrical neutron generator

    DOE Patents [OSTI]

    Leung, Ka-Ngo (Hercules, CA)

    2008-04-22T23:59:59.000Z

    A cylindrical neutron generator is formed with a coaxial RF-driven plasma ion source and target. A deuterium (or deuterium and tritium) plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical neutron generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which contain many slots. The plasma generator emanates ions radially over 360.degree. and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired. The plasma generator may be in the center and the neutron target on the outside, or the plasma generator may be on the outside and the target on the inside. In a nested configuration, several concentric targets and plasma generating regions are nested to increase the neutron flux.

  17. Cylindrical neutron generator

    DOE Patents [OSTI]

    Leung, Ka-Ngo (Hercules, CA)

    2009-12-29T23:59:59.000Z

    A cylindrical neutron generator is formed with a coaxial RF-driven plasma ion source and target. A deuterium (or deuterium and tritium) plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical neutron generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which contain many slots. The plasma generator emanates ions radially over 360.degree. and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired. The plasma generator may be in the center and the neutron target on the outside, or the plasma generator may be on the outside and the target on the inside. In a nested configuration, several concentric targets and plasma generating regions are nested to increase the neutron flux.

  18. Cylindrical neutron generator

    DOE Patents [OSTI]

    Leung, Ka-Ngo

    2005-06-14T23:59:59.000Z

    A cylindrical neutron generator is formed with a coaxial RF-driven plasma ion source and target. A deuterium (or deuterium and tritium) plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical neutron generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which contain many slots. The plasma generator emanates ions radially over 360.degree. and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired. The plasma generator may be in the center and the neutron target on the outside, or the plasma generator may be on the outside and the target on the inside. In a nested configuration, several concentric targets and plasma generating regions are nested to increase the neutron flux.

  19. Geometric algorithms for reconfigurable structures

    E-Print Network [OSTI]

    Benbernou, Nadia M

    2011-01-01T23:59:59.000Z

    In this thesis, we study three problems related to geometric algorithms of reconfigurable structures. In the first problem, strip folding, we present two universal hinge patterns for a strip of material that enable the ...

  20. Randomized algorithms for reliable broadcast

    E-Print Network [OSTI]

    Vaikuntanathan, Vinod

    2009-01-01T23:59:59.000Z

    In this thesis, we design randomized algorithms for classical problems in fault tolerant distributed computing in the full-information model. The full-information model is a strong adversarial model which imposes no ...

  1. Bayesian inference algorithm on Raw

    E-Print Network [OSTI]

    Luong, Alda

    2004-01-01T23:59:59.000Z

    This work explores the performance of Raw, a parallel hardware platform developed at MIT, running a Bayesian inference algorithm. Motivation for examining this parallel system is a growing interest in creating a self-learning ...

  2. Predicting Polymeric Crystal Structures by Evolutionary Algorithms

    E-Print Network [OSTI]

    Qiang Zhu; Vinit Sharma; Artem R Oganov; Rampi Ramprasad

    2014-06-05T23:59:59.000Z

    The recently developed evolutionary algorithm USPEX proved to be a tool that enables accurate and reliable prediction of structures for a given chemical composition. Here we extend this method to predict the crystal structure of polymers by performing constrained evolutionary search, where each monomeric unit is treated as one or several building blocks with fixed connectivity. This greatly reduces the search space and allows the initial structure generation with different sequences and packings using these blocks. The new constrained evolutionary algorithm is successfully tested and validated on a diverse range of experimentally known polymers, namely polyethylene (PE), polyacetylene (PA), poly(glycolic acid) (PGA), poly(vinyl chloride) (PVC), poly(oxymethylene) (POM), poly(phenylene oxide) (PPO), and poly (p-phenylene sulfide) (PPS). By fixing the orientation of polymeric chains, this method can be further extended to predict all polymorphs of poly(vinylidene fluoride) (PVDF), and the complex linear polymer crystals, such as nylon-6 and cellulose. The excellent agreement between predicted crystal structures and experimentally known structures assures a major role of this approach in the efficient design of the future polymeric materials.

  3. Supergravity, complex parameters and the Janis-Newman algorithm

    E-Print Network [OSTI]

    Harold Erbin; Lucien Heurtier

    2015-01-09T23:59:59.000Z

    The Demia\\'nski-Janis-Newman algorithm is an original solution generating technique. For a long time it has been limited to producing rotating solutions, restricting to the case of a metric and real scalar fields, despite the fact that Demia\\'nski extended it to include more parameters such as a NUT charge. Recently two independent prescriptions have been given for extending the algorithm to gauge fields and thus electrically charged configurations. In this paper we aim to end setting up the algorithm by providing a missing but important piece, which is how the transformation is applied to complex scalar fields. We illustrate our proposal through several examples taken from N=2 supergravity, including the stationary BPS solutions from Behrndt et al. and Sen's axion-dilaton rotating black hole. Moreover we discuss solutions that include pairs of complex parameters, such as the mass and the NUT charge, or the electric and magnetic charges, and we explain how to perform the algorithm in this context (with the example of Kerr-Newman-Taub-NUT and dyonic Kerr-Newman black holes). The final formulation of the DJN algorithm can possibly handle solutions with five of the six Pleba\\'nski-Demia\\'nski parameters along with any type of bosonic fields with spin less than two (exemplified with the SWIP solutions). This provides all the necessary tools for applications to general matter-coupled gravity and to (gauged) supergravity.

  4. A new maintenance friendly concept for bulb type generators

    SciTech Connect (OSTI)

    Scheidl, W.

    1998-07-01T23:59:59.000Z

    Bulb type generators in the rating range up to 15 MW are in a severe competition with geared up machines which operate at much higher speed and are therefore smaller and cheaper. Up to now the conventional bulb type generator in the standard design as it is used on several rivers in Austria and many other countries was not so economic in the lower rating range. A new and maintenance friendly concept for the bulb type generator design especially for these lower rating range ended in a more economic solution and is now able to compete with the geared up machines.

  5. Smolt Monitoring at the Head of Lower Granite Reservoir and Lower Granite Dam, 2003 Annual Report.

    SciTech Connect (OSTI)

    Buettner, Edwin W.; Putnam, Scott A. [Idaho Department of Fish and Game

    2009-02-18T23:59:59.000Z

    This project monitored the daily passage of Chinook salmon Oncorhynchus tshawytscha, steelhead trout O. mykiss, and sockeye salmon O. nerka smolts during the 2003 spring out-migration at migrant traps on the Snake River and Salmon River. In 2003 fish management agencies released significant numbers of hatchery Chinook salmon and steelhead trout above Lower Granite Dam that were not marked with a fin clip or coded-wire tag. Generally, these fish were distinguishable from wild fish by the occurrence of fin erosion. Total annual hatchery Chinook salmon catch at the Snake River trap was 2.1 times less in 2003 than in 2002. The wild Chinook catch was 1.1 times less than the previous year. Hatchery steelhead trout catch was 1.7 times less than in 2002. Wild steelhead trout catch was 2.1 times less than the previous year. The Snake River trap collected 579 age-0 Chinook salmon of unknown rearing. During 2003, the Snake River trap captured five hatchery and 13 wild/natural sockeye salmon and 36 coho salmon O. kisutch of unknown rearing. Differences in trap catch between years are due to fluctuations not only in smolt production, but also differences in trap efficiency and duration of trap operation associated with flow. The significant differences in catch between 2003 and the previous year were due mainly to low flows during much of the trapping season and then very high flows at the end of the season, which terminated the trapping season 12 days earlier than in 2002. Trap operations began on March 9 and were terminated on May 27. The trap was out of operation for a total of zero days due to mechanical failure or debris. Hatchery Chinook salmon catch at the Salmon River trap was 16.8% less and wild Chinook salmon catch was 1.7 times greater than in 2002. The hatchery steelhead trout collection in 2003 was 5.6% less than in 2002. Wild steelhead trout collection was 19.2% less than the previous year. Trap operations began on March 9 and were terminated on May 24 due to high flows. There were zero days when the trap was out of operation due to high flow or debris. The decrease in hatchery Chinook catch in 2003 was partially due to differences in flow between years because there was a 5.9% increase in hatchery production in the Salmon River drainage in 2003. The decrease in hatchery steelhead catch may be partially due to a 13% decrease in hatchery production in the Salmon River drainage in 2003. Travel time (d) and migration rate (km/d) through Lower Granite Reservoir for PIT-tagged Chinook salmon and steelhead trout marked at the Snake River trap were affected by discharge. Statistical analysis of 2003 data detected a relation between migration rate and discharge for wild Chinook salmon but was unable to detect a relation for hatchery Chinook. The inability to detect a migration rate discharge relation for hatchery Chinook was probably caused by age 0 fall Chinook being mixed in with the age 1 Chinook. Age 0 fall Chinook migrate much slower than age 1 Chinook, which would confuse the ability to detect the migration rate discharge relation. For wild Chinook salmon there was a 1.4-fold increase in migration rate, respectively, between 50 and 100 kcfs. For steelhead trout tagged at the Snake River trap, statistical analysis detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge. For hatchery and wild steelhead trout, there was a 1.7-fold and a 1.9-fold increase in migration rate, respectively, between 50 and 100 kcfs. Travel time and migration rate to Lower Granite Dam for fish marked at the Salmon River trap were calculated. Statistical analysis of the 2003 data detected a significant relation between migration rate and Lower Granite Reservoir inflow discharge for hatchery Chinook salmon, wild Chinook salmon and hatchery steelhead trout. Not enough data were available to perform the analysis for wild steelhead trout. Migration rate increased 14-fold for hatchery Chinook salmon, 8.3-fold for wild Chinook salmon and 2.4-fold for hatchery steelhead as discharge increased between 50 kcfs and

  6. New wave generation

    E-Print Network [OSTI]

    Mercier, Matthieu J.

    We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (Exp. Fluids, vol. 42, 2007, pp. 123130). This ...

  7. Lifetime Prediction of IGBT in a STATCOM Using Modified-Graphical Rainflow Counting Algorithm

    SciTech Connect (OSTI)

    Gopi Reddy, Lakshmi Reddy [ORNL; Tolbert, Leon M [ORNL; Ozpineci, Burak [ORNL

    2012-01-01T23:59:59.000Z

    Rainflow algorithms are one of the best counting methods used in fatigue and failure analysis [17]. There have been many approaches to the rainflow algorithm, some proposing modifications. Graphical Rainflow Method (GRM) was proposed recently with a claim of faster execution times [10]. However, the steps of the graphical method of rainflow algorithm, when implemented, do not generate the same output as the four-point or ASTM standard algorithm. A modified graphical method is presented and discussed in this paper to overcome the shortcomings of graphical rainflow algorithm. A fast rainflow algorithm based on four-point algorithm but considering point comparison than range comparison is also presented. A comparison between the performances of the common rainflow algorithms [6-10], including the proposed methods, in terms of execution time, memory used, and efficiency, complexity, and load sequences is presented. Finally, the rainflow algorithm is applied to temperature data of an IGBT in assessing the lifetime of a STATCOM operating for power factor correction of the load. From 5-minute data load profiles available, the lifetime is estimated to be at 3.4 years.

  8. Citrus Production in the Lower Rio Grande Valley of Texas.

    E-Print Network [OSTI]

    Traub, Hamilton Paul; Friend, W. H. (William Heartsill)

    1930-01-01T23:59:59.000Z

    LIE?ARY, A t r: COLLEGE, CAvrus. TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR COLLEGE STATION, BRAZOS COUNTY, TEXAS - BULLETIN NO. 419 DIVISION OF HORTICULTURE Citrus Production in the Lower Rio Grande Valley of Texas... of Agriculture. . Citrus fruit production in the Lower Rio Grande Valley, especially grapefruit, has increased at a rather rapid rate dur- ing the past few years. More than 5,000,000 citrus trees were set in orchard form in the Lower Rio Grande Valley up...

  9. Journes MAS 2010, Bordeaux Session : Algorithmes Stochastiques

    E-Print Network [OSTI]

    Boyer, Edmond

    . En particulier plusieurs facettes et applications des algorithmes MCO, MCOP, MCOG, ... seront mises

  10. agaricus bisporus lowers: Topics by E-print Network

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

    and discusses some subtleties of studying field space trajectories. Aditya Aravind; Dustin Lorshbough; Sonia Paban 2014-01-06 182 Lower bounds in the quantum cell probe model...

  11. Microsoft Word - LowerJocko_Acquisition_CX_final_081310.doc

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

    Salish and Kootenai Tribes (CSKT) for purchase of the Lower Jocko River Property Fish and Wildlife Project No.: 2002-003-00, Contract BPA-44646 Categorical Exclusion...

  12. Developing a Lower Cost and Higher Energy Density Alternative...

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

    Protected Lithium Electrodes for Advanced Batteries ADVANCED MANUFACTURING OFFICE Developing a Lower Cost and Higher Energy Density Alternative to Lithium-Ion Batteries...

  13. Lower Valley Energy- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Lower Valley Energy offers numerous rebates for residential customers who wish to increase the energy efficiency of eligible homes. Rebates are available for weatherization measures, water heaters,...

  14. Generation Gaps Revisited Kenneth A. De Jong Jayshree Sarma

    E-Print Network [OSTI]

    George Mason University

    . In spite of considerable progress in our understanding of GAs since then, the pros/cons of overlapping of considerable progress in our understanding of GAs, the pros/cons of overlapping generations remains a somewhat There has been a lot of recent interest in so-called "steady state" genetic algorithms (GAs) which, among

  15. Generation Gaps Revisited Kenneth A. De Jong Jayshree Sarma

    E-Print Network [OSTI]

    George Mason University

    . In spite of considerable progress in our understanding of GAs since then, the pros/cons of overlapping. In spite of considerable progress in our understanding of GAs, the pros/cons of overlapping generations There has been a lot of recent interest in so­called "steady state" genetic algorithms (GAs) which, among

  16. Invariant Generation for Parametrized Systems using SelfReflection

    E-Print Network [OSTI]

    Chang, Bor-Yuh Evan

    including device drivers, distributed systems, and robotic swarms. In this paper we describe a technique that enables leveraging off­the­shelf invariant generators designed for sequential programs to infer invariants settings including device drivers, distributed algorithms, concurrent data structures, robotic swarms

  17. Genetic Programming Based Automatic Gait Generation for Quadruped Robots

    E-Print Network [OSTI]

    Fernandez, Thomas

    Descriptors I.2.9 [Artificial Intelligence]: Robotics General Terms Algorithms, Design, Performance KeywordsGenetic Programming Based Automatic Gait Generation for Quadruped Robots Kisung Seo Electronic a new approach to develop a fast gait for quadruped robot using genetic programming (GP). Several recent

  18. Efficient Path Delay Test Generation with Boolean Satisfiability

    E-Print Network [OSTI]

    Bian, Kun

    2013-12-10T23:59:59.000Z

    delay test generator CodGen. A mixed structural-functional approach was implemented in CodGen where longest paths were detected using the K Longest Path Per Gate (KLPG) algorithm and path justification and dynamic compaction were handled with the SAT...

  19. Incorporating Wind Generation in Cap and Trade Programs

    SciTech Connect (OSTI)

    Bluestein, J.; Salerno, E.; Bird, L.; Vimmerstedt, L.

    2006-07-01T23:59:59.000Z

    Cap and trade programs are increasingly being used to reduce emissions from electricity generation in the United States. Cap and trade programs primarily target emitting generators, but programs have also included renewable generators, such as wind generators. States cite several reasons why they have considered the policy option of including renewable generators in cap and trade programs: to provide an incentive for lower-emitting generation, to achieve emissions reductions in non-capped pollutants, and to gain local economic benefits associated with renewable energy projects. The U.S. Environmental Protection Agency also notes these rationales for considering this policy alternative, and the National Association of Regulatory Commissioners (NARUC) passed a resolution supporting the inclusion of renewable energy in cap and trade programs. This report explores why states consider this policy option, what participation could mean for wind generators, and how wind generation can most effectively be included in state, federal, and regional cap and trade programs.

  20. Technical Review of Lower Snake River Juvenile Salmon Migration Feasibility Report / Environmental Impact Statement Appendix I Economics

    E-Print Network [OSTI]

    in and interpretation of the EA. 3.1 Power System Impacts The effects on electricity generation and its costs are in those areas. · According to BPA, the lower Snake dams provide voltage control or reactive power. · There are two potential problems in the electricity reserves analysis. The first is the valuation of lost

  1. Motor/generator

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-05-13T23:59:59.000Z

    A motor/generator is provided for connecting between a transmission input shaft and an output shaft of a prime mover. The motor/generator may include a motor/generator housing, a stator mounted to the motor/generator housing, a rotor mounted at least partially within the motor/generator housing and rotatable about a rotor rotation axis, and a transmission-shaft coupler drivingly coupled to the rotor. The transmission-shaft coupler may include a clamp, which may include a base attached to the rotor and a plurality of adjustable jaws.

  2. Dynamic simulation of dual-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.

    1996-10-01T23:59:59.000Z

    Induction generators have been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness, and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using two induction generators with two different rated speeds. With single- speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. The operation at maximum Cp can occur only at a single wind speed. However, if the wind speed varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind-speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative to capture more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine will be investigated. One type of control algorithm for dual- speed operation is proposed. Results from a dynamic simulation will be presented to show how the control algorithm works and how power, current and torque of the system vary as the wind turbine is exposed to varying wind speeds.

  3. Comprehensive database on Induan (Lower Triassic) to Sinemurian (Lower Jurassic) marine bivalve genera and their paleobiogeographic record

    E-Print Network [OSTI]

    Ros-Franch, Sonia; Marquez-Aliaga, Ana; Damborenea, Susana

    2014-04-10T23:59:59.000Z

    Marine bivalve genera that were described or mentioned for Triassic and Lower Jurassic deposits worldwide are reviewed in terms of their validity, stratigraphic range, paleogeographic distribution, paleoautecology, and ...

  4. Discharge cell for ozone generator

    DOE Patents [OSTI]

    Nakatsuka, Suguru (Amagasaki, JP)

    2000-01-01T23:59:59.000Z

    A discharge cell for use in an ozone generator is provided which can suppress a time-related reduction in ozone concentration without adding a catalytic gas such as nitrogen gas to oxygen gas as a raw material gas. The discharge cell includes a pair of electrodes disposed in an opposed spaced relation with a discharge space therebetween, and a dielectric layer of a three-layer structure consisting of three ceramic dielectric layers successively stacked on at least one of the electrodes, wherein a first dielectric layer of the dielectric layer contacting the one electrode contains no titanium dioxide, wherein a second dielectric layer of the dielectric layer exposed to the discharge space contains titanium dioxide in a metal element ratio of not lower than 10 wt %.

  5. Creating a Cognitive Agent in a Virtual World: Planning, Navigation, and Natural Language Generation

    E-Print Network [OSTI]

    Hewlett, William

    2013-01-01T23:59:59.000Z

    Generation . . . . . . . . . . . . . . . . . . . . .Language Generation . . . . . . . . . . . . . . . . .Language Generation . . . . . . . . . . . . . . . . . . . .

  6. First satellite observations of lower tropospheric ammonia and methanol

    E-Print Network [OSTI]

    First satellite observations of lower tropospheric ammonia and methanol Reinhard Beer,1 Mark W) and methanol (CH3OH), well above the normal background levels. This is the first time that these molecules have. Citation: Beer, R., et al. (2008), First satellite observations of lower tropospheric ammonia and methanol

  7. Annual Tour Ready to Explore New Mexico's Lower Pecos River

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Annual Tour Ready to Explore New Mexico's Lower Pecos River By Steve Ress The itinerary is set and the seats have been filled for an early June bus tour to New Mexico's lower Pecos River basin compacts on Nebraska's Republican River and New Mexico's Pecos River to see what can be learned from

  8. MAX-PLANCK-INSTITUT.. ( Lower Bounds for Set Intersection

    E-Print Network [OSTI]

    . Mehlhorn R. Raman C. Uhrig MPI- I-92-127 October 1992 o mPD_ _ _ _ _ _ _ IN F 0 R M AT I K _ _ _ _ __ Im Stadtwald 66123 Saarbrcken Germany #12;Lower Bounds for Set Intersection Queries P. Dietz K. Mehlhorn R. Raman C. Uhrig MPI-I-92-127 October 1992 #12;Lower Bounds for Set Intersection Queries PAUL DIETZ KURT

  9. A genetic algorithm based method for docking flexible molecules

    SciTech Connect (OSTI)

    Judson, R.S. [Sandia National Labs., Livermore, CA (United States); Jaeger, E.P.; Treasurywala, A.M. [Sterling-Winthrop Inc., Collegeville, PA (United States)

    1993-11-01T23:59:59.000Z

    The authors describe a computational method for docking flexible molecules into protein binding sites. The method uses a genetic algorithm (GA) to search the combined conformation/orientation space of the molecule to find low energy conformation. Several techniques are described that increase the efficiency of the basic search method. These include the use of several interacting GA subpopulations or niches; the use of a growing algorithm that initially docks only a small part of the molecule; and the use of gradient minimization during the search. To illustrate the method, they dock Cbz-GlyP-Leu-Leu (ZGLL) into thermolysin. This system was chosen because a well refined crystal structure is available and because another docking method had previously been tested on this system. Their method is able to find conformations that lie physically close to and in some cases lower in energy than the crystal conformation in reasonable periods of time on readily available hardware.

  10. Optimisation of Quantum Evolution Algorithms

    E-Print Network [OSTI]

    Apoorva Patel

    2015-03-04T23:59:59.000Z

    Given a quantum Hamiltonian and its evolution time, the corresponding unitary evolution operator can be constructed in many different ways, corresponding to different trajectories between the desired end-points. A choice among these trajectories can then be made to obtain the best computational complexity and control over errors. As an explicit example, Grover's quantum search algorithm is described as a Hamiltonian evolution problem. It is shown that the computational complexity has a power-law dependence on error when a straightforward Lie-Trotter discretisation formula is used, and it becomes logarithmic in error when reflection operators are used. The exponential change in error control is striking, and can be used to improve many importance sampling methods. The key concept is to make the evolution steps as large as possible while obeying the constraints of the problem. In particular, we can understand why overrelaxation algorithms are superior to small step size algorithms.

  11. Optimisation of Quantum Evolution Algorithms

    E-Print Network [OSTI]

    Patel, Apoorva

    2015-01-01T23:59:59.000Z

    Given a quantum Hamiltonian and its evolution time, the corresponding unitary evolution operator can be constructed in many different ways, corresponding to different trajectories between the desired end-points. A choice among these trajectories can then be made to obtain the best computational complexity and control over errors. As an explicit example, Grover's quantum search algorithm is described as a Hamiltonian evolution problem. It is shown that the computational complexity has a power-law dependence on error when a straightforward Lie-Trotter discretisation formula is used, and it becomes logarithmic in error when reflection operators are used. The exponential change in error control is striking, and can be used to improve many importance sampling methods. The key concept is to make the evolution steps as large as possible while obeying the constraints of the problem. In particular, we can understand why overrelaxation algorithms are superior to small step size algorithms.

  12. Five Quantum Algorithms Using Quipper

    E-Print Network [OSTI]

    Safat Siddiqui; Mohammed Jahirul Islam; Omar Shehab

    2014-06-18T23:59:59.000Z

    Quipper is a recently released quantum programming language. In this report, we explore Quipper's programming framework by implementing the Deutsch's, Deutsch-Jozsa's, Simon's, Grover's, and Shor's factoring algorithms. It will help new quantum programmers in an instructive manner. We choose Quipper especially for its usability and scalability though it's an ongoing development project. We have also provided introductory concepts of Quipper and prerequisite backgrounds of the algorithms for readers' convenience. We also have written codes for oracles (black boxes or functions) for individual algorithms and tested some of them using the Quipper simulator to prove correctness and introduce the readers with the functionality. As Quipper 0.5 does not include more than \\ensuremath{4 \\times 4} matrix constructors for Unitary operators, we have also implemented \\ensuremath{8 \\times 8} and \\ensuremath{16 \\times 16} matrix constructors.

  13. Study of lower hybrid wave propagation in ionized gas by Hamiltonian theory

    SciTech Connect (OSTI)

    Casolari, A. [Universit di Pisa, Pisa (Italy); Cardinali, A. [Associazione Euratom-ENEA sulla Fusione, C.P. 65 - I-00044 - Frascati, Rome (Italy)

    2014-02-12T23:59:59.000Z

    In order to find an approximate solution to the Vlasov-Maxwell equation system describing the lower hybrid wave propagation in magnetic confined plasmas, the use of the WKB method leads to the ray tracing equations. The Hamiltonian character of the ray tracing equations is investigated analytically and numerically in order to deduce the physical properties of the wave propagating without absorption in the confined plasma. The consequences of the Hamiltonian character of the equations on the travelling wave, in particular, on the evolution of the parallel wavenumber along the propagation path have been accounted and the chaotic diffusion of the timeaveraged parallel wave-number towards higher values has been evaluated. Numerical analysis by means of a Runge-Kutta based algorithm implemented in a ray tracing code supplies the analytical considerations. A numerical tool based on the symplectic integration of the ray trajectories has been developed.

  14. Pulse tube coolers for Meteosat third generation

    SciTech Connect (OSTI)

    Butterworth, James; Aigouy, Grald; Chassaing, Clement; Debray, Benot; Huguet, Alexandre [Air Liquide Advanced Technologies, 2 Rue de Clmencire, F-38600 Sassenage (France)

    2014-01-29T23:59:59.000Z

    Air Liquide's Large Pulse Tube Coolers (LPTC) will be used to cool the focal planes of the Infrared Sounder (IRS) and Flexible Combined Imager (FCI) instruments aboard the ESA/Eumetsat satellites Meteosat Third Generation (MTG). This cooler consists of an opposed piston linear compressor driving a pulse tube cold head and the associated drive electronics including temperature regulation and vibration cancellation algorithms. Preparations for flight qualification of the cooler are now underway. In this paper we present results of the optimization and qualification activities as well as an update on endurance testing.

  15. Method of grid generation

    DOE Patents [OSTI]

    Barnette, Daniel W. (Veguita, NM)

    2002-01-01T23:59:59.000Z

    The present invention provides a method of grid generation that uses the geometry of the problem space and the governing relations to generate a grid. The method can generate a grid with minimized discretization errors, and with minimal user interaction. The method of the present invention comprises assigning grid cell locations so that, when the governing relations are discretized using the grid, at least some of the discretization errors are substantially zero. Conventional grid generation is driven by the problem space geometry; grid generation according to the present invention is driven by problem space geometry and by governing relations. The present invention accordingly can provide two significant benefits: more efficient and accurate modeling since discretization errors are minimized, and reduced cost grid generation since less human interaction is required.

  16. Steam generator support system

    DOE Patents [OSTI]

    Moldenhauer, J.E.

    1987-08-25T23:59:59.000Z

    A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source is disclosed. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances. 4 figs.

  17. Steam generator support system

    DOE Patents [OSTI]

    Moldenhauer, James E. (Simi Valley, CA)

    1987-01-01T23:59:59.000Z

    A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances.

  18. Talkin Bout Wind Generation

    Broader source: Energy.gov [DOE]

    The amount of electricity generated by the wind industry started to grow back around 1999, and since 2007 has been increasing at a rapid pace.

  19. SNE TRAFIC GENERATOR

    Energy Science and Technology Software Center (OSTI)

    003027MLTPL00 Network Traffic Generator for Low-rate Small Network Equipment Software http://eln.lbl.gov/sne_traffic_gen.html

  20. Hydrogen Generation for Refineries

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

    Single Cycle Shown for ATB SteamCarbon 3 * ATB reforming * Steamcarbon 3 * Syngas generated during reforming * 70% H 2 * 20% CO * Syngas composition agrees with...

  1. Lower bounds on the absorption probability of beam splitters

    E-Print Network [OSTI]

    Stefan Scheel

    2005-08-25T23:59:59.000Z

    We derive a lower limit to the amount of absorptive loss present in passive linear optical devices such as a beam splitter. We choose a particularly simple beam splitter geometry, a single planar slab surrounded by vacuum, which already reveals the important features of the theory. It is shown that, using general causality requirements and statistical arguments, the lower bound depends on the frequency of the incident light and the transverse resonance frequency of a suitably chosen single-resonance model only. For symmetric beam splitters and reasonable assumptions on the resonance frequency $\\omega_T$, the lower absorption bound is $p_{\\min}\\approx 10^{-6}(\\omega/\\omega_T)^4$.

  2. A Strongly and Superlinearly Convergent SQP Algorithm for Optimization Problems with Linear Complementarity Constraints

    SciTech Connect (OSTI)

    Jian Jinbao, E-mail: jianjb@gxu.edu.cn; Li Jianling; Mo Xingde [College of Mathematics and Information Science, Guangxi University, Nanning, Guangxi 530004 (China)

    2006-06-15T23:59:59.000Z

    This paper discusses a kind of optimization problem with linear complementarity constraints, and presents a sequential quadratic programming (SQP) algorithm for solving a stationary point of the problem. The algorithm is a modification of the SQP algorithm proposed by Fukushima et al. [Computational Optimization and Applications, 10 (1998),5-34], and is based on a reformulation of complementarity condition as a system of linear equations. At each iteration, one quadratic programming and one system of equations needs to be solved, and a curve search is used to yield the step size. Under some appropriate assumptions, including the lower-level strict complementarity, but without the upper-level strict complementarity for the inequality constraints, the algorithm is proved to possess strong convergence and superlinear convergence. Some preliminary numerical results are reported.

  3. Market Designs for High Levels of Variable Generation: Preprint

    SciTech Connect (OSTI)

    Milligan, M.; Holttinen, H.; Kiviluoma, J.; Orths, A.; Lynch, M.; Soder, L.

    2014-10-01T23:59:59.000Z

    Variable renewable generation is increasing in penetration in modern power systems, leading to higher variability in the supply and price of electricity as well as lower average spot prices. This raises new challenges, particularly in ensuring sufficient capacity and flexibility from conventional technologies. Because the fixed costs and lifetimes of electricity generation investments are significant, designing markets and regulations that ensure the efficient integration of renewable generation is a significant challenge. This papers reviews the state of play of market designs for high levels of variable generation in the United States and Europe and considers new developments in both regions.

  4. Algorithmic Aspects of Risk Management

    E-Print Network [OSTI]

    Stehr, Mark-Oliver

    Algorithmic Aspects of Risk Management Ashish Gehani1 , Lee Zaniewski2 , and K. Subramani2 1 SRI International 2 West Virginia University Abstract. Risk analysis has been used to manage the security of sys configuration. This allows risk management to occur in real time and reduces the window of exposure to attack

  5. Algorithmic Thermodynamics John C. Baez

    E-Print Network [OSTI]

    Tomkins, Andrew

    Algorithmic Thermodynamics John C. Baez Department of Mathematics, University of California in statistical mechanics. This viewpoint allows us to apply many techniques developed for use in thermodynamics and chemical potential. We derive an analogue of the fundamental thermodynamic relation dE = TdS - PdV + µd

  6. Adaptive protection algorithm and system

    DOE Patents [OSTI]

    Hedrick, Paul (Pittsburgh, PA) [Pittsburgh, PA; Toms, Helen L. (Irwin, PA) [Irwin, PA; Miller, Roger M. (Mars, PA) [Mars, PA

    2009-04-28T23:59:59.000Z

    An adaptive protection algorithm and system for protecting electrical distribution systems traces the flow of power through a distribution system, assigns a value (or rank) to each circuit breaker in the system and then determines the appropriate trip set points based on the assigned rank.

  7. Machine Learning: Foundations and Algorithms

    E-Print Network [OSTI]

    Ben-David, Shai

    with accident prevention systems that are built using machine learning algorithms. Machine learning is also to us). Machine learning tools are concerned with endowing programs with the ability to "learn if the learning process succeeded or failed? The second goal of this book is to present several key machine

  8. GEET DUGGAL Algorithms for Determining

    E-Print Network [OSTI]

    Relationship to Gene Regulation Final Public Oral Examination Doctor of Philosophy Recent genome sequencing. Analyses from them have shown that the 3D structure of DNA may be closely linked to genome functions structure of DNA and genome function on the scale of the whole genome. Specifically, we designed algorithms

  9. Non-Stationary Spectral Estimation for Wind Turbine Induction Generator Faults Detection

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    - or indirect-drive, fixed- or variable-speed turbine generators, advanced signal processing tools are required on the generator stator current. The detection algorithm uses a recursive maximum likelihood estimator to track, induction machine, faults de- tection, stator current, spectral estimation, maximum likelihood estimator. I

  10. Improved method for calculating the radiation heat generation in the BOR-60 reactor

    SciTech Connect (OSTI)

    Varivtsev, A. V., E-mail: vav3@niiar.ru; Zhemkov, I. Yu. [JSC SSC RIAR, Dimitrovgrad-10 (Russian Federation)

    2014-12-15T23:59:59.000Z

    The results of theoretical and experimental studies aimed at determining the radiation heat generation in the BOR-60 reactor reveal the drawbacks of the computational methods used at present. An algorithm that is free from these drawbacks and allows one to determine the radiation heat generation computationally is proposed.

  11. NEXT GENERATION TURBINE SYSTEM STUDY

    SciTech Connect (OSTI)

    Frank Macri

    2002-02-28T23:59:59.000Z

    Rolls-Royce has completed a preliminary design and marketing study under a Department of Energy (DOE) cost shared contract (DE-AC26-00NT40852) to analyze the feasibility of developing a clean, high efficiency, and flexible Next Generation Turbine (NGT) system to meet the power generation market needs of the year 2007 and beyond. Rolls-Royce evaluated the full range of its most advanced commercial aerospace and aeroderivative engines alongside the special technologies necessary to achieve the aggressive efficiency, performance, emissions, economic, and flexibility targets desired by the DOE. Heavy emphasis was placed on evaluating the technical risks and the economic viability of various concept and technology options available. This was necessary to ensure the resulting advanced NGT system would provide extensive public benefits and significant customer benefits without introducing unacceptable levels of technical and operational risk that would impair the market acceptance of the resulting product. Two advanced cycle configurations were identified as offering significant advantages over current combined cycle products available in the market. In addition, balance of plant (BOP) technologies, as well as capabilities to improve the reliability, availability, and maintainability (RAM) of industrial gas turbine engines, have been identified. A customer focused survey and economic analysis of a proposed Rolls-Royce NGT product configuration was also accomplished as a part of this research study. The proposed Rolls-Royce NGT solution could offer customers clean, flexible power generation systems with very high efficiencies, similar to combined cycle plants, but at a much lower specific cost, similar to those of simple cycle plants.

  12. FINITELY CONVERGENT DECOMPOSITION ALGORITHMS FOR ...

    E-Print Network [OSTI]

    2014-05-07T23:59:59.000Z

    ?This material is based upon work supported by the National Science .... propose a method to update the lift-and-project cuts [2] generated from one scenario to.

  13. Optimization Online - Lower Bounds on Complexity of Lyapunov ...

    E-Print Network [OSTI]

    Amir Ali Ahmadi

    2015-04-14T23:59:59.000Z

    Apr 14, 2015 ... Lower Bounds on Complexity of Lyapunov Functions for Switched Linear Systems ... of the optimal product, generalizing a result of Lagarias and Wang. ... belonging to some of the most popular function classes in controls.

  14. Oxygen enhanced switching to combustion of lower rank fuels ...

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

    enhanced switching to combustion of lower rank fuels Re-direct Destination: A furnace that combusts fuel, such as coal, of a given minimum energy content to obtain a stated minimum...

  15. Big and Small Ideas: How to Lower Solar Financing Costs

    Broader source: Energy.gov [DOE]

    DOE hosted the "Big & Small Ideas: How to Lower Solar Financing Costs" breakout session during the SunShot Grand Challenge Summit and Technology Forum. This session explored a range of...

  16. EV Community Readiness projects: New York City and Lower Hudson...

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

    EV Community Readiness projects: New York City and Lower Hudson Valley Clean Communities, Inc. (NY, MA, PA); NYSERDA (ME, NH, VT, MA, RI, CT, NY, NJ, PA, DE, MD, DC) EV Community...

  17. A Tight Lower Bound for the Adjacent Quadratic Assignment Problem

    E-Print Network [OSTI]

    Borzou Rostami

    2014-09-23T23:59:59.000Z

    Sep 23, 2014 ... A Tight Lower Bound for the Adjacent Quadratic Assignment Problem ... The first is based on a ``flow'' formulation whose linear relaxation can be solved very efficiently ... Category 2: Integer Programming (0-1 Programming ).

  18. Wild and Scenic River Acts (Lower St. Croix Riverway)

    Broader source: Energy.gov [DOE]

    The lower portion of the St. Croix River in Minnesota and Wisconsin is regulated under the National Wild and Scenic Rivers Program. Most new residential, commercial, and industrial uses are...

  19. SUSTAINABLE COMMUNITY REDEVELOPMENT: A Plan for Detroit's Lower Eastside

    E-Print Network [OSTI]

    Edwards, Paul N.

    SUSTAINABLE COMMUNITY REDEVELOPMENT: A Plan for Detroit's Lower of Science/Master of Landscape Architecture (Natural Resources and Environment of the neighborhood. To aid JEBA in their strategic planning process, we developed a replicable model of sustainable

  20. Woody vegetation of the lower Navasota River watershed

    E-Print Network [OSTI]

    Allen, Harriet Louise Gell

    1974-01-01T23:59:59.000Z

    WOODY VEGETATION OF THE LOWER NAVASOTA RIVER WATERSHED A Thesis by DIl 5~ HARRIET ?GELL ALLEN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December... 1974 Major Subject: Range Science WOODY VEGETATION OF THE LOWER NAVASOTA RIVER WATERSHED A Thesis by HARRIET GELL ALLEN Approved as to style and content by: (Chairman of Committee) (Head of Department) (Member) (Member) December 1974...

  1. Contracting for wind generation

    E-Print Network [OSTI]

    Newbery, David

    The UK Government proposes offering long-term Feed-in-Tariffs (FiTs) to low-carbon generation to reduce risk and encourage new entrants. Their preference is for a Contract-for-Difference (CfD) or a premium FiT (pFiT) for all generation regardless...

  2. Laser beam generating apparatus

    DOE Patents [OSTI]

    Warner, B.E.; Duncan, D.B.

    1994-02-15T23:59:59.000Z

    Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus is described. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 7 figures.

  3. Laser beam generating apparatus

    DOE Patents [OSTI]

    Warner, B.E.; Duncan, D.B.

    1993-12-28T23:59:59.000Z

    Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 11 figures.

  4. The fifth generation computer

    SciTech Connect (OSTI)

    Moto-Oka, T.; Kitsuregawa, M.

    1985-01-01T23:59:59.000Z

    The leader of Japan's Fifth Generation computer project, known as the 'Apollo' project, and a young computer scientist elucidate in this book the process of how the idea came about, international reactions, the basic technology, prospects for realization, and the abilities of the Fifth Generation computer. Topics considered included forecasting, research programs, planning, and technology impacts.

  5. A Mobile Motion Analysis System Using Intertial Sensors for Analysis of Lower Limb Prosthetics

    SciTech Connect (OSTI)

    Mueller, John Kyle P [ORNL] [ORNL; Ericson, Milton Nance [ORNL] [ORNL; Farquhar, Ethan [ORNL] [ORNL; Lind, Randall F [ORNL] [ORNL; Evans III, Boyd Mccutchen [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    Soldiers returning from the global war on terror requiring lower leg prosthetics generally have different concerns and requirements than the typical lower leg amputee. These subjects are usually young, wish to remain active and often desire to return to active military duty. As such, they demand higher performance from their prosthetics, but are at risk for chronic injury and joint conditions in their unaffected limb. Motion analysis is a valuable tool in assessing the performance of new and existing prosthetic technologies as well as the methods in fitting these devices to both maximize performance and minimize risk of injury for the individual soldier. We are developing a mobile, low-cost motion analysis system using inertial measurement units (IMUs) and two custom force sensors that detect ground reaction forces and moments on both the unaffected limb and prosthesis. IMUs were tested on a robot programmed to simulate human gait motion. An algorithm which uses a kinematic model of the robot and an extended Kalman filter (EKF) was used to convert the rates and accelerations from the gyro and accelerometer into joint angles. Compared to encoder data from the robot, which was considered the ground truth in this experiment, the inertial measurement system had a RMSE of <1.0 degree. Collecting kinematic and kinetic data without the restrictions and expense of a motion analysis lab could help researchers, designers and prosthetists advance prosthesis technology and customize devices for individuals. Ultimately, these improvements will result in better prosthetic performance for the military population.

  6. asexual genetic algorithm: Topics by E-print Network

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

    for Genetic Algorithms No Author Given Andrews, Mark W. 2 A simple algorithm for optimization and model fitting: AGA (asexual genetic algorithm) CERN Preprints Summary: Context....

  7. The bidimensionality theory and its algorithmic applications

    E-Print Network [OSTI]

    Hajiaghayi, MohammadTaghi

    2005-01-01T23:59:59.000Z

    Our newly developing theory of bidimensional graph problems provides general techniques for designing efficient fixed-parameter algorithms and approximation algorithms for NP- hard graph problems in broad classes of graphs. ...

  8. Optimization Online - An Approximation Algorithm for Constructing ...

    E-Print Network [OSTI]

    Artur Pessoa

    2006-09-02T23:59:59.000Z

    Sep 2, 2006 ... In this paper, we propose an approximation algorithm for the 2-bit Hamming prefix code problem. Our algorithm spends $O(n \\log^3 n)$ time to...

  9. Constant time algorithms in sparse graph model

    E-Print Network [OSTI]

    Nguyen, Huy Ngoc, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    We focus on constant-time algorithms for graph problems in bounded degree model. We introduce several techniques to design constant-time approximation algorithms for problems such as Vertex Cover, Maximum Matching, Maximum ...

  10. Hydrogen Generation From Electrolysis

    SciTech Connect (OSTI)

    Steven Cohen; Stephen Porter; Oscar Chow; David Henderson

    2009-03-06T23:59:59.000Z

    Small-scale (100-500 kg H2/day) electrolysis is an important step in increasing the use of hydrogen as fuel. Until there is a large population of hydrogen fueled vehicles, the smaller production systems will be the most cost-effective. Performing conceptual designs and analyses in this size range enables identification of issues and/or opportunities for improvement in approach on the path to 1500 kg H2/day and larger systems. The objectives of this program are to establish the possible pathways to cost effective larger Proton Exchange Membrane (PEM) water electrolysis systems and to identify areas where future research and development efforts have the opportunity for the greatest impact in terms of capital cost reduction and efficiency improvements. System design and analysis was conducted to determine the overall electrolysis system component architecture and develop a life cycle cost estimate. A design trade study identified subsystem components and configurations based on the trade-offs between system efficiency, cost and lifetime. Laboratory testing of components was conducted to optimize performance and decrease cost, and this data was used as input to modeling of system performance and cost. PEM electrolysis has historically been burdened by high capital costs and lower efficiency than required for large-scale hydrogen production. This was known going into the program and solutions to these issues were the focus of the work. The program provided insights to significant cost reduction and efficiency improvement opportunities for PEM electrolysis. The work performed revealed many improvement ideas that when utilized together can make significant progress towards the technical and cost targets of the DOE program. The cell stack capital cost requires reduction to approximately 25% of todays technology. The pathway to achieve this is through part count reduction, use of thinner membranes, and catalyst loading reduction. Large-scale power supplies are available today that perform in a range of efficiencies, >95%, that are suitable for the overall operational goals. The balance of plant scales well both operationally and in terms of cost becoming a smaller portion of the overall cost equation as the systems get larger. Capital cost reduction of the cell stack power supplies is achievable by modifying the system configuration to have the cell stacks in electrical series driving up the DC bus voltage, thereby allowing the use of large-scale DC power supply technologies. The single power supply approach reduces cost. Elements of the cell stack cost reduction and efficiency improvement work performed in the early stage of the program is being continued in subsequent DOE sponsored programs and through internal investment by Proton. The results of the trade study of the 100 kg H2/day system have established a conceptual platform for design and development of a next generation electrolyzer for Proton. The advancements started by this program have the possibility of being realized in systems for the developing fueling markets in 2010 period.

  11. Optimization Online - Efficient parallel coordinate descent algorithm ...

    E-Print Network [OSTI]

    Ion Necoara

    2012-11-02T23:59:59.000Z

    Nov 2, 2012 ... Efficient parallel coordinate descent algorithm for convex optimization problems with separable constraints: application to distributed MPC.

  12. Optimization Online - Efficient Algorithmic Techniques for Several ...

    E-Print Network [OSTI]

    Mugurel Ionut Andreica

    2008-10-23T23:59:59.000Z

    Oct 23, 2008 ... Efficient Algorithmic Techniques for Several Multidimensional Geometric Data Management and Analysis Problems. Mugurel Ionut...

  13. An algorithm for minimization of quantum cost

    E-Print Network [OSTI]

    Anindita Banerjee; Anirban Pathak

    2010-04-09T23:59:59.000Z

    A new algorithm for minimization of quantum cost of quantum circuits has been designed. The quantum cost of different quantum circuits of particular interest (eg. circuits for EPR, quantum teleportation, shor code and different quantum arithmetic operations) are computed by using the proposed algorithm. The quantum costs obtained using the proposed algorithm is compared with the existing results and it is found that the algorithm has produced minimum quantum cost in all cases.

  14. ALGORITHM & DOCUMENTATION: MINRES-QLP for Singular ...

    E-Print Network [OSTI]

    SOU-CHENG T. CHOI, MICHAEL A. SAUNDERS

    2013-01-12T23:59:59.000Z

    Jan 12, 2013 ... ALGORITHM & DOCUMENTATION: MINRES-QLP for Singular Symmetric and. Hermitian Linear Equations and Least-Squares. Problems.

  15. Use of Slip Ring Induction Generator for Wind Power Generation

    E-Print Network [OSTI]

    K Y Patil; D S Chavan

    Wind energy is now firmly established as a mature technology for electricity generation. There are different types of generators that can be used for wind energy generation, among which Slip ring Induction generator proves to be more advantageous. To analyse application of Slip ring Induction generator for wind power generation, an experimental model is developed and results are studied. As power generation from natural sources is the need today and variable speed wind energy is ample in amount in India, it is necessary to study more beneficial options for wind energy generating techniques. From this need a model is developed by using Slip ring Induction generator which is a type of Asynchronous generator.

  16. Equivalence of Learning Algorithms Julien Audiffren1

    E-Print Network [OSTI]

    Equivalence of Learning Algorithms Julien Audiffren1 and Hachem Kadri2 1 CMLA, ENS Cachan is to introduce a concept of equivalence between machine learn- ing algorithms. We define two notions of algorithmic equivalence, namely, weak and strong equivalence. These notions are of paramount importance

  17. A DISTRIBUTED POWER CONTROL ALGORITHM FOR

    E-Print Network [OSTI]

    Mitra, Debasis

    A DISTRIBUTED POWER CONTROL ALGORITHM FOR BURSTY TRANSMISSIONS ON CELLULAR, SPREAD SPECTRUM, USA ABSTRACT We propose a distributed algorithm for power control in cellular, wideband networks, although its parameters are different from data. We propose a distributed algorithm for power control

  18. A Genetic Algorithm Approach for Technology Characterization

    E-Print Network [OSTI]

    Galvan, Edgar

    2012-10-19T23:59:59.000Z

    A GENETIC ALGORITHM APPROACH FOR TECHNOLOGY CHARACTERIZATION A Thesis by EDGAR GALVAN 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 August 2012 Major Subject: Mechanical Engineering A Genetic Algorithm Approach for Technology Characterization Copyright 2012 Edgar Galvan A GENETIC ALGORITHM APPROACH FOR TECHNOLOGY...

  19. Algorithmic Decision Theory and the Smart Grid

    E-Print Network [OSTI]

    1 Algorithmic Decision Theory and the Smart Grid Fred Roberts Rutgers University #12;2 Algorithmic Conference on ADT probably Belgium in Fall 2013. #12;9 ADT and Smart Grid Many of the following ideas and planning dating at least to World War II. But: algorithms to speed up and improve real-time decision

  20. university-logo Intro Algorithm Results Concl.

    E-Print Network [OSTI]

    Aarts, Gert

    university-logo Intro Algorithm Results Concl. Strong coupling lattice QCD at finite temperature Ph. de Forcrand Trento, March 2009 = 0 QCD #12;university-logo Intro Algorithm Results Concl. QCD Forcrand Trento, March 2009 = 0 QCD #12;university-logo Intro Algorithm Results Concl. Motivation (1

  1. Compact neutron generator

    DOE Patents [OSTI]

    Leung, Ka-Ngo; Lou, Tak Pui

    2005-03-22T23:59:59.000Z

    A compact neutron generator has at its outer circumference a toroidal shaped plasma chamber in which a tritium (or other) plasma is generated. A RF antenna is wrapped around the plasma chamber. A plurality of tritium ion beamlets are extracted through spaced extraction apertures of a plasma electrode on the inner surface of the toroidal plasma chamber and directed inwardly toward the center of neutron generator. The beamlets pass through spaced acceleration and focusing electrodes to a neutron generating target at the center of neutron generator. The target is typically made of titanium tubing. Water is flowed through the tubing for cooling. The beam can be pulsed rapidly to achieve ultrashort neutron bursts. The target may be moved rapidly up and down so that the average power deposited on the surface of the target may be kept at a reasonable level. The neutron generator can produce fast neutrons from a T-T reaction which can be used for luggage and cargo interrogation applications. A luggage or cargo inspection system has a pulsed T-T neutron generator or source at the center, surrounded by associated gamma detectors and other components for identifying explosives or other contraband.

  2. Logo-like Learning of Basic Concepts of Algorithms -Having Fun with Algorithms

    E-Print Network [OSTI]

    Logo-like Learning of Basic Concepts of Algorithms - Having Fun with Algorithms Gerald Futschek are not primarily interested in programming the way of learning is highly influenced by the Logo style of learning to design efficient algorithms. Keywords Logo-like learning, algorithms, group learning 1 2 3 4 5 n ... 1

  3. Synthetic guide star generation

    DOE Patents [OSTI]

    Payne, Stephen A.; Page, Ralph H.; Ebbers, Christopher A.; Beach, Raymond J.

    2004-03-09T23:59:59.000Z

    A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.

  4. Synthetic guide star generation

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA) [Castro Valley, CA; Page, Ralph H. (Castro Valley, CA) [Castro Valley, CA; Ebbers, Christopher A. (Livermore, CA) [Livermore, CA; Beach, Raymond J. (Livermore, CA) [Livermore, CA

    2008-06-10T23:59:59.000Z

    A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.

  5. Graph Generator Survey

    SciTech Connect (OSTI)

    Lothian, Josh [ORNL; Powers, Sarah S [ORNL; Sullivan, Blair D [ORNL; Baker, Matthew B [ORNL; Schrock, Jonathan [ORNL; Poole, Stephen W [ORNL

    2013-12-01T23:59:59.000Z

    The benchmarking effort within the Extreme Scale Systems Center at Oak Ridge National Laboratory seeks to provide High Performance Computing benchmarks and test suites of interest to the DoD sponsor. The work described in this report is a part of the effort focusing on graph generation. A previously developed benchmark, SystemBurn, allowed the emulation of dierent application behavior profiles within a single framework. To complement this effort, similar capabilities are desired for graph-centric problems. This report examines existing synthetic graph generator implementations in preparation for further study on the properties of their generated synthetic graphs.

  6. Innovative Self- Generating Projects

    E-Print Network [OSTI]

    Kelly, L.

    2013-01-01T23:59:59.000Z

    furnaces ? Flat rolled and tubular steel ESL-IE-13-05-06 Proceedings of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 ? 2013 CLEAResult ? All rights reserved. By-Product Gas Flow COG = Coke Oven Gas BFG...-Product Gas Heat Content Heat Content Compared to Natural Gas Amount available (mmBTU/hr) Coke Oven Gas 475 BTU/scf 55% lower 40.4 Blast Furnace Gas 83 BTU/scf 91% lower 43.2 ESL-IE-13-05-06 Proceedings of the Thrity-Fifth Industrial Energy Technology...

  7. Monitoring and mapping selected riparian habitat along the lower Snake River

    SciTech Connect (OSTI)

    Downs, J. L; Tiller, B. L [Pacific Northwest Lab., Richland, WA (United States); Witter, M. [Shannon and Wilson, Inc., Seattle, WA (United States). Geotechnical and Environmental Consultants, Seattle, Washington (United States); Mazaika, R. [Corps of Engineers, Portland, OR (United States)

    1996-01-01T23:59:59.000Z

    Studies in this document were initiated to establish baseline information on riparian and wetland habitat conditions at the areas studied under the current reservoir operations on the lower Snake River. Two approaches were used to assess habitat at 28 study sites selected on the four pools on the lower Snake River. These areas all contribute significant riparian habitat along the river, and several of these areas are designated habitat management units. At 14 of the 28 sites, we monitored riparian habitat on three dates during the growing season to quantify vegetation abundance and composition along three transects: soil nutrients, moisture, and pH and water level and pH. A second approach involved identifying any differences in the extent and amount of riparian/wetland habitat currently found at the study areas from that previously documented. We used both ground and boat surveys to map and classify the changes in vegetative cover along the shoreline at the 14 monitoring sites and at 14 additional sites along the lower Snake selected to represent various riparian/wetland habitat conditions. Results of these mapping efforts are compared with maps of cover types previously generated using aerial photography taken in 1987.

  8. STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION AND LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE

    SciTech Connect (OSTI)

    MEACHAM JE

    2009-10-26T23:59:59.000Z

    This report assesses the steady state flammability level under off normal ventilation conditions in the tank headspace for 28 double-shell tanks (DST) and 149 single shell-tanks (SST) at the Hanford Site. Flammability was calculated using estimated gas release rates, Le Chatelier's rule, and lower flammability limits of fuels in an air mixture. This revision updates the hydrogen generation rate input data for all 177 tanks using waste composition information from the Best Basis Inventory Detail Report (data effective as of August 4,2008). Assuming only barometric breathing, the shortest time to reach 25% of the lower flammability limit is 11 days for DSTs (i.e., tank 241-AZ-10l) and 36 days for SSTs (i.e., tank 241-B-203). Assuming zero ventilation, the shortest time to reach 25% of the lower flammability limit is 10 days for DSTs (i.e., tank 241-AZ-101) and 34 days for SSTs (i.e., tank 241-B-203).

  9. STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION AND LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE

    SciTech Connect (OSTI)

    MEACHAM JE

    2008-11-17T23:59:59.000Z

    This report assesses the steady state flammability level under off normal ventilation conditions in the tank headspace for 28 double-shell tanks (DST) and 149 single shell-tanks (SST) at the Hanford Site. Flammability was calculated using estimated gas release rates, Le Chatelier's rule, and lower flammability limits of fuels in an air mixture. This revision updates the hydrogen generation rate input data for al1 177 tanks using waste composition information from the Best Basis Inventory Detail Report (data effective as of August 4,2008). Assuming only barometric breathing, the shortest time to reach 25% of the lower flammability limit is 13 days for DSTs (i.e., tank 241-AZ-102) and 36 days for SSTs (i.e., tank 241-B-203). Assuming zero ventilation, the shortest time to reach 25% of the lower flammability limit is 12 days for DSTs (i.e., tank 241-AZ-102) and 34 days for SSTs (i.e., tank 241-B-203).

  10. Distributed Approaches for Determination of Reconfiguration Algorithm Termination

    E-Print Network [OSTI]

    Lai, Hong-jian

    Distributed Approaches for Determination of Reconfiguration Algorithm Termination Pinak Tulpule architecture was used as globally shared memory structure for detection of algorithm termination. This paper of algorithm termination. Keywords--autonomous agent-based reconfiguration, dis- tributed algorithms, shipboard

  11. Generating electricity from viruses

    ScienceCinema (OSTI)

    Lee, Seung-Wuk

    2014-06-23T23:59:59.000Z

    Berkeley Lab's Seung-Wuk Lee discusses "Generating electricity from viruses" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas.

  12. Vector generator scan converter

    DOE Patents [OSTI]

    Moore, James M. (Livermore, CA); Leighton, James F. (Livermore, CA)

    1990-01-01T23:59:59.000Z

    High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O (input/output) channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardward for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold.

  13. Vector generator scan converter

    DOE Patents [OSTI]

    Moore, J.M.; Leighton, J.F.

    1988-02-05T23:59:59.000Z

    High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardware for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold. 7 figs.

  14. Energy and Mass Generation

    E-Print Network [OSTI]

    Burra G. Sidharth

    2010-03-11T23:59:59.000Z

    Modifications in the energy momentum dispersion laws due to a noncommutative geometry, have been considered in recent years. We examine the oscillations of extended objects in this perspective and find that there is now a "generation" of energy.

  15. Local entropy generation analysis

    SciTech Connect (OSTI)

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

    1991-02-01T23:59:59.000Z

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

  16. Generating electricity from viruses

    SciTech Connect (OSTI)

    Lee, Seung-Wuk

    2013-10-31T23:59:59.000Z

    Berkeley Lab's Seung-Wuk Lee discusses "Generating electricity from viruses" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas.

  17. Monte Carlo event generators

    SciTech Connect (OSTI)

    Frixione, Stefano [INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova (Italy)

    2005-10-06T23:59:59.000Z

    I review recent progress in the physics of parton shower Monte Carlos, emphasizing the ideas which allow the inclusion of higher-order matrix elements into the framework of event generators.

  18. Oscillating fluid power generator

    DOE Patents [OSTI]

    Morris, David C

    2014-02-25T23:59:59.000Z

    A system and method for harvesting the kinetic energy of a fluid flow for power generation with a vertically oriented, aerodynamic wing structure comprising one or more airfoil elements pivotably attached to a mast. When activated by the moving fluid stream, the wing structure oscillates back and forth, generating lift first in one direction then in the opposite direction. This oscillating movement is converted to unidirectional rotational movement in order to provide motive power to an electricity generator. Unlike other oscillating devices, this device is designed to harvest the maximum aerodynamic lift forces available for a given oscillation cycle. Because the system is not subjected to the same intense forces and stresses as turbine systems, it can be constructed less expensively, reducing the cost of electricity generation. The system can be grouped in more compact clusters, be less evident in the landscape, and present reduced risk to avian species.

  19. Geometric lower bound for a quantum coherence measure

    E-Print Network [OSTI]

    Diego Paiva Pires; Lucas C. Cleri; Diogo O. Soares-Pinto

    2015-04-23T23:59:59.000Z

    Nowadays, geometric tools are being used to treat a huge class of problems of quantum information science. By understanding the interplay between the geometry of the state space and information-theoretic quantities, it is possible to obtain less trivial and more robust physical constraints on quantum systems. In this sense, here we establish a geometric lower bound for the Wigner-Yanase skew information (WYSI), a well-known information theoretic quantity recently recognized as a proper quantum coherence measure. Starting from a mixed state evolving under unitary dynamics, while WYSI is a constant of motion, the lower bound indicates the rate of change of quantum statistical distinguishability between initial and final states. Our result shows that, since WYSI fits in the class of Petz metrics, this lower bound is the change rate of its respective geodesic distance on quantum state space. The geometric approach is advantageous because raises several physical interpretations of this inequality under the same theoretical umbrella.

  20. Heatup of the TMI-2 lower head during core relocation

    SciTech Connect (OSTI)

    Wang, S.K.; Sienicki, J.J.; Spencer, B.W.

    1989-01-01T23:59:59.000Z

    An analysis has been carried out to assess the potential of a melting attack upon the reactor vessel lower head and incore instrument nozzle penetration weldments during the TMI core relocation event at 224 minutes. Calculations were performed to determine the potential for molten corium to undergo breakup into droplets which freeze and form a debris bed versus impinging upon the lower head as one or more coherent streams. The effects of thermal-hydraulic interactions between corium streams and water inside the lower plenum, the effects of the core support assembly structure upon the corium, and the consequences of corium relocation by way of the core former region were examined. 19 refs., 24 figs.

  1. Steam generator tube failures

    SciTech Connect (OSTI)

    MacDonald, P.E.; Shah, V.N.; Ward, L.W.; Ellison, P.G.

    1996-04-01T23:59:59.000Z

    A review and summary of the available information on steam generator tubing failures and the impact of these failures on plant safety is presented. The following topics are covered: pressurized water reactor (PWR), Canadian deuterium uranium (CANDU) reactor, and Russian water moderated, water cooled energy reactor (VVER) steam generator degradation, PWR steam generator tube ruptures, the thermal-hydraulic response of a PWR plant with a faulted steam generator, the risk significance of steam generator tube rupture accidents, tubing inspection requirements and fitness-for-service criteria in various countries, and defect detection reliability and sizing accuracy. A significant number of steam generator tubes are defective and are removed from service or repaired each year. This wide spread damage has been caused by many diverse degradation mechanisms, some of which are difficult to detect and predict. In addition, spontaneous tube ruptures have occurred at the rate of about one every 2 years over the last 20 years, and incipient tube ruptures (tube failures usually identified with leak detection monitors just before rupture) have been occurring at the rate of about one per year. These ruptures have caused complex plant transients which have not always been easy for the reactor operators to control. Our analysis shows that if more than 15 tubes rupture during a main steam line break, the system response could lead to core melting. Although spontaneous and induced steam generator tube ruptures are small contributors to the total core damage frequency calculated in probabilistic risk assessments, they are risk significant because the radionuclides are likely to bypass the reactor containment building. The frequency of steam generator tube ruptures can be significantly reduced through appropriate and timely inspections and repairs or removal from service.

  2. Message passing for integrating and assessing renewable generation in a redundant power grid

    SciTech Connect (OSTI)

    Zdeborova, Lenka [Los Alamos National Laboratory; Backhaus, Scott [Los Alamos National Laboratory; Chertkov, Michael [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    A simplified model of a redundant power grid is used to study integration of fluctuating renewable generation. The grid consists of large number of generator and consumer nodes. The net power consumption is determined by the difference between the gross consumption and the level of renewable generation. The gross consumption is drawn from a narrow distribution representing the predictability of aggregated loads, and we consider two different distributions representing wind and solar resources. Each generator is connected to D consumers, and redundancy is built in by connecting R {le} D of these consumers to other generators. The lines are switchable so that at any instance each consumer is connected to a single generator. We explore the capacity of the renewable generation by determining the level of 'firm' generation capacity that can be displaced for different levels of redundancy R. We also develop message-passing control algorithm for finding switch sellings where no generator is overloaded.

  3. A hierarchical evolutionary algorithm for multiobjective optimization Clay Holdsworth,a

    E-Print Network [OSTI]

    Yetisgen-Yildiz, Meliha

    . The final goal is to improve practical aspects of the algorithm and integrate it with a decision analysis organs at risk OARs . The population of plans generated by the modified MOEA was closer to the Pareto tool or human interface for selection of the IMRT plan with the best possible balance of successful

  4. Optimization of wind turbine energy and power factor with an evolutionary computation algorithm

    E-Print Network [OSTI]

    Kusiak, Andrew

    -controllable variables of a 1.5 MW wind turbine. An evolutionary strategy algorithm solves the data-derived optimization-linear approach to control a variable-speed turbine to maximize power in the presence of generator torque for variable-speed wind turbines. Munteanu et al. [11] applied a linear-quadratic stochastic approach to solve

  5. Partial abductive inference in Bayesian belief networks using a genetic algorithm q

    E-Print Network [OSTI]

    de Campos, Luis M.

    Partial abductive inference in Bayesian belief networks using a genetic algorithm q L.M. de Campos, Spain Abstract Abductive inference in Bayesian belief networks is the process of generating the u most's variables, this problem is called partial abductive inference. Both problems are NP-hard, and so exact

  6. Algorithm PREQN: Fortran 77 Subroutines for Preconditioning the Conjugate Gradient Method

    E-Print Network [OSTI]

    Nocedal, Jorge

    Algorithm PREQN: Fortran 77 Subroutines for Preconditioning the Conjugate Gradient Method Jos subroutines for automatically generating pre conditioners for the conjugate gradient method. It is designed the conjugate gradient method. They are designed for solving a sequence of linear systems, A i x = b i ; i = 1

  7. Algorithm PREQN: Fortran 77 Subroutines for Preconditioning the Conjugate Gradient Method

    E-Print Network [OSTI]

    Nocedal, Jorge

    Algorithm PREQN: Fortran 77 Subroutines for Preconditioning the Conjugate Gradient Method Jose Luis for automatically generating pre- conditioners for the conjugate gradient method. It is designed for solving: Preconditioning, conjugate gradient method, quasi- Newton method, Hessian-free Newton method, limited memory

  8. IEEE TRANSACTIONS ON ROBOTICS / SHORT PAPER 1 Improving Motion Planning Algorithms by Efficient

    E-Print Network [OSTI]

    LaValle, Steven M.

    IEEE TRANSACTIONS ON ROBOTICS / SHORT PAPER 1 Improving Motion Planning Algorithms by Efficient-neighbor queries in Cartesian products of R, S1 and RP3 , the most common topological spaces in the context), which are designed for efficient nearest-neighbor generation in Rd . These techniques, however

  9. Data Locality Optimization for Synthesis of Efficient Out-of-Core Algorithms

    E-Print Network [OSTI]

    Baumgartner, Gerald

    Data Locality Optimization for Synthesis of Efficient Out-of-Core Algorithms Sandhya Krishnan1,choppellav @ornl.gov Abstract. This paper describes an approach to synthesis of efficient out-of-core code for the generation of out-of-core code. Experimental measurements are provided that show a good match with model

  10. Data Locality Optimization for Synthesis of Efficient Out-of-Core Algorithms

    E-Print Network [OSTI]

    Ramanujam, J. "Ram"

    Data Locality Optimization for Synthesis of Efficient Out-of-Core Algorithms Sandhya Krishnan1,choppellav}@ornl.gov Abstract. This paper describes an approach to synthesis of efficient out-of-core code for a class for the generation of out-of-core code. Experimental measurements are provided that show a good match with model

  11. Seismic Velocity Inversion with Genetic Algorithms Sushil J. Louis Qinxue Chen Satish Pullammanappallil

    E-Print Network [OSTI]

    Louis, Sushil J.

    Seismic Velocity Inversion with Genetic Algorithms Sushil J. Louis Qinxue Chen Satish to compute travel times for seismic waves. However, in practice, we have to solve the inverse problem: travel synthetic seismic models shows that large population sizes are crit- ical to generating good seismic

  12. Efficient Parallel Data Mining with the Apriori Algorithm on FPGAs1

    E-Print Network [OSTI]

    Hwang, Kai

    Efficient Parallel Data Mining with the Apriori Algorithm on FPGAs1 Zachary K. Baker and Viktor K scalable packaged units. We implement all data and computation intensive operations within the systolic" method for intelligently reporting unpredictably generated mid-array results to a controller without

  13. A Maximum Entropy Algorithm for Rhythmic Analysis of Genome-Wide Expression Patterns

    E-Print Network [OSTI]

    Richardson, David

    A Maximum Entropy Algorithm for Rhythmic Analysis of Genome-Wide Expression Patterns Christopher James Langmead C. Robertson McClung Bruce Randall Donald ,,,§,¶ Abstract We introduce a maximum entropy-based spectral analysis, maximum entropy spectral reconstruction is well suited to signals of the type generated

  14. Evaluating the Impact of Solar Generation on Balancing Requirements in Southern Nevada System

    SciTech Connect (OSTI)

    Ma, Jian; Lu, Shuai; Etingov, Pavel V.; Makarov, Yuri V.

    2012-07-26T23:59:59.000Z

    AbstractIn this paper, the impacts of solar photovoltaic (PV) generation on balancing requirements including regulation and load following in the Southern Nevada balancing area are analyzed. The methodology is based on the swinging door algorithm and a probability box method developed by PNNL. The regulation and load following signals are mimicking the systems scheduling and real-time dispatch processes. Load, solar PV generation and distributed PV generation (DG) data are used in the simulation. Different levels of solar PV generation and DG penetration profiles are used in the study. Sensitivity of the regulation requirements with respect to real-time solar PV generation forecast errors is analyzed.

  15. Jet Shapes and Jet Algorithms in SCET

    E-Print Network [OSTI]

    Stephen D. Ellis; Andrew Hornig; Christopher Lee; Christopher K. Vermilion; Jonathan R. Walsh

    2010-11-15T23:59:59.000Z

    Jet shapes are weighted sums over the four-momenta of the constituents of a jet and reveal details of its internal structure, potentially allowing discrimination of its partonic origin. In this work we make predictions for quark and gluon jet shape distributions in N-jet final states in e+e- collisions, defined with a cone or recombination algorithm, where we measure some jet shape observable on a subset of these jets. Using the framework of Soft-Collinear Effective Theory, we prove a factorization theorem for jet shape distributions and demonstrate the consistent renormalization-group running of the functions in the factorization theorem for any number of measured and unmeasured jets, any number of quark and gluon jets, and any angular size R of the jets, as long as R is much smaller than the angular separation between jets. We calculate the jet and soft functions for angularity jet shapes \\tau_a to one-loop order (O(alpha_s)) and resum a subset of the large logarithms of \\tau_a needed for next-to-leading logarithmic (NLL) accuracy for both cone and kT-type jets. We compare our predictions for the resummed \\tau_a distribution of a quark or a gluon jet produced in a 3-jet final state in e+e- annihilation to the output of a Monte Carlo event generator and find that the dependence on a and R is very similar.

  16. Microgenetic optimization algorithm for optimal wavefront shaping

    E-Print Network [OSTI]

    Anderson, Benjamin R; Gunawidjaja, Ray; Eilers, Hergen

    2015-01-01T23:59:59.000Z

    One of the main limitations of utilizing optimal wavefront shaping in imaging and authentication applications is the slow speed of the optimization algorithms currently being used. To address this problem we develop a micro-genetic optimization algorithm ($\\mu$GA) for optimal wavefront shaping. We test the abilities of the $\\mu$GA and make comparisons to previous algorithms (iterative and simple-genetic) by using each algorithm to optimize transmission through an opaque medium. From our experiments we find that the $\\mu$GA is faster than both the iterative and simple-genetic algorithms and that both genetic algorithms are more resistant to noise and sample decoherence than the iterative algorithm.

  17. algorithms

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not FoundInformation DOEInformation Summary Big*Theea2/316Cap plasticity

  18. Fuel cycle comparison of distributed power generation technologies.

    SciTech Connect (OSTI)

    Elgowainy, A.; Wang, M. Q.; Energy Systems

    2008-12-08T23:59:59.000Z

    The fuel-cycle energy use and greenhouse gas (GHG) emissions associated with the application of fuel cells to distributed power generation were evaluated and compared with the combustion technologies of microturbines and internal combustion engines, as well as the various technologies associated with grid-electricity generation in the United States and California. The results were primarily impacted by the net electrical efficiency of the power generation technologies and the type of employed fuels. The energy use and GHG emissions associated with the electric power generation represented the majority of the total energy use of the fuel cycle and emissions for all generation pathways. Fuel cell technologies exhibited lower GHG emissions than those associated with the U.S. grid electricity and other combustion technologies. The higher-efficiency fuel cells, such as the solid oxide fuel cell (SOFC) and molten carbonate fuel cell (MCFC), exhibited lower energy requirements than those for combustion generators. The dependence of all natural-gas-based technologies on petroleum oil was lower than that of internal combustion engines using petroleum fuels. Most fuel cell technologies approaching or exceeding the DOE target efficiency of 40% offered significant reduction in energy use and GHG emissions.

  19. Energy Department Announces $25 Million to Lower Cost of Concentrating...

    Office of Environmental Management (EM)

    thermal energy to a power block to generate electricity. CSP technology with thermal energy storage can store the sun's intense heat for use when the sun isn't shining. This...

  20. Fishbone-like internal kink instability driven by supra-thermal electrons on FTU generated by lower hybrid radiofrequency power

    E-Print Network [OSTI]

    Zonca, Fulvio

    hybrid current drive (LHCD) is of strong interest for the burning plasma research, as the trapped heating (ECRH) is of strong interest for the burning plasma research. The charged fusion product effects

  1. The generation of non aspect sensitive plasma density irregularities by eld aligned drifts in the lower ionosphere

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    (FBI, Farley, 1963; Buneman, 1963). The main characteristics which distin- guish the FBI- tions indicate backscatter within a degree or so of orthogonality, in agreement with FBI theory, Ru

  2. Addendum to "Coherent radio pulses from GEANT generated electromagnetic showers in ice"

    E-Print Network [OSTI]

    S. Razzaque; S. Seunarine; S. Chambers; D. Besson; D. McKay; J. Ralston; D. Seckel

    2003-06-13T23:59:59.000Z

    We reevaluate our published calculations of electromagnetic showers generated by GEANT 3.21 and the radio frequency pulses they produce in ice. We are prompted by a recent report showing that GEANT 3.21-modeled showers are sensitive to internal settings in the electron tracking subroutine. We report the shower and pulse characteristics obtained with different settings of GEANT 3.21 and with GEANT 4. The default setting of electron tracking in GEANT 3.21 we used in previous work speeds up the shower simulation at the cost of information near the end of the tracks. We find that settings tracking electron and positron to lower energy yield a more accurate calculation, a more intense shower, and proportionately stronger radio pulses at low frequencies. At high frequencies the relation between shower tracking algorithm and pulse spectrum is more complex. We obtain radial distributions of shower particles and phase distributions of pulses from 100 GeV showers that are consistent with our published results.

  3. Feature based volume decomposition for automatic hexahedral mesh generation

    SciTech Connect (OSTI)

    LU,YONG; GADH,RAJIT; TAUTGES,TIMOTHY J.

    2000-02-21T23:59:59.000Z

    Much progress has been made through these years to achieve automatic hexahedral mesh generation. While general meshing algorithms that can take on general geometry are not there yet; many well-proven automatic meshing algorithms now work on certain classes of geometry. This paper presents a feature based volume decomposition approach for automatic Hexahedral Mesh generation. In this approach, feature recognition techniques are introduced to determine decomposition features from a CAD model. The features are then decomposed and mapped with appropriate automatic meshing algorithms suitable for the correspondent geometry. Thus a formerly unmeshable CAD model may become meshable. The procedure of feature decomposition is recursive: sub-models are further decomposed until either they are matched with appropriate meshing algorithms or no more decomposition features are detected. The feature recognition methods employed are convexity based and use topology and geometry information, which is generally available in BREP solid models. The operations of volume decomposition are also detailed in the paper. The final section, the capability of the feature decomposer is demonstrated over some complicated manufactured parts.

  4. Citrus Variety Trends in the Lower Rio Grande Valley.

    E-Print Network [OSTI]

    Alderman, D. C. (DeForest Charles)

    1951-01-01T23:59:59.000Z

    Citrus Variety Trends in the Lower Rio Grande Valley CONTENTS ......................................................................................................... Digest ...... 3... thousands of citrus trees and the growers were faced with a tremendous replanting program, which, in turn, had focused interest on varieties. Fruit production figures, yields per acre, and monetary returns per acre for five varieties of grapefruit...

  5. Surface OceanLower Atmosphere Processes Geophysical Research Series 187

    E-Print Network [OSTI]

    Kohfeld, Karen

    , British Columbia, Canada Andy Ridgwell Bristol Research Initiative for the Dynamic Global Environment251 Surface OceanLower Atmosphere Processes Geophysical Research Series 187 Copyright 2009, and processes have been identified that have improved our understanding of the modern and future carbon cycle

  6. New Lower Bounds for Online k-Server Routing Problems

    E-Print Network [OSTI]

    Krumke, Sven O.

    New Lower Bounds for Online k-Server Routing Problems Irene Fink a Sven O. Krumke a Stephan, 67653 Kaiserslautern, Germany. {fink,krumke,westphal}@mathematik.uni-kl.de Abstract In a k-server routing problem k 1 servers move in a metric space in order to visit specified points or carry objects

  7. Fuel Cell Tax Incentives: How Monetization Lowers the

    E-Print Network [OSTI]

    for electricity produced and sold by a qualified facility for a 5- or 10-year period. o Currently 2.1 cent or 1Fuel Cell Tax Incentives: How Monetization Lowers the Government Outlay By: Lee J. Peterson, Esq.48-9(a)(1). 5R G Building Business Value February 19, 2009 #12;How Do Tax Credits Minimize Government

  8. INTRODUCTION Extraction of granite from lower crust, and its

    E-Print Network [OSTI]

    Solar, Gary S.

    INTRODUCTION Extraction of granite from lower crust, and its emplacement at shallower levels, is the principal mechanism by which the continents have be- come differentiated. Thus, understanding how granite orogenic belts spatial and tem- poral relationships between granite and regional tectonic structures

  9. Lower Granite Dam Smolt Monitoring Program, 2000 Annual Report.

    SciTech Connect (OSTI)

    Morrill, Charles; Ross, Doug; Mensik, Fred

    2000-01-01T23:59:59.000Z

    The 2000 fish collection season at Lower Granite was characterized by lower than average spring flows and spill, low levels of debris, cool water temperatures, increased unclipped yearling and subyearling chinook smolts, and 8,300,546 smolts collected and transported compared to 5,882,872 in 1999. With the continued release of unclipped supplementation chinook and steelhead above Lower Granite Dam, we can no longer accurately distinguish wild chinook, steelhead, and sockeye/kokanee in the sample. Although some table titles in this report still show ''wild'' column headings, the numbers in these columns for 1999 and 2000 include wild and unclipped hatchery origin smolts. The increases over previous years reflect the increased supplementation. A total of 8,300,546 juvenile salmonids were collected at Lower Granite Dam. Of these, 187,862 fish were bypassed back to the river and 7,950,648 were transported to release sites below Bonneville Dam, 7,778,853 by barge and 171,795 by truck. A total of 151,344 salmonids were examined in daily samples. Nine research projects conducted by four agencies impacted a total of 1,361,006 smolts (16.4% of the total collection).

  10. PREDICTIVE YASIR: HIGH SECURITY WITH LOWER LATENCY IN LEGACY SCADA

    E-Print Network [OSTI]

    PREDICTIVE YASIR: HIGH SECURITY WITH LOWER LATENCY IN LEGACY SCADA A Thesis Submitted Technical Report TR2010-665 #12;Abstract Message authentication with low latency is necessary to ensure- tication solutions by our lab and others looked at single messages and incurred no- ticeable latency

  11. Is there Lower Limit to Velocity or Velocity Change?

    E-Print Network [OSTI]

    B. N. Sreenath; Kenath Arun; C. Sivaram

    2013-06-19T23:59:59.000Z

    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays and gamma ray bursts.

  12. Full wave simulations of lower hybrid wave propagation in tokamaks

    E-Print Network [OSTI]

    Wright, John C.

    Full wave simulations of lower hybrid wave propagation in tokamaks J. C. Wright , P. T. Bonoli , C hybrid (LH) waves have the attractive property of damping strongly via electron Landau resonance. Consequently these waves are well-suited to driving current in the plasma periphery where the electron

  13. Traversal, Case Analysis, and Lowering for C++ Program Analysis

    E-Print Network [OSTI]

    Wagner, Luke A.

    2010-01-14T23:59:59.000Z

    ++. This extension, named Filter, assists the tool builder in traversal, case analysis, and lowering of the data structure representing C++ programs. Comparisons described in the thesis show a 2-4x code reduction when solving basic problems (e.g., searching for uses...

  14. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Hernandez, Manuel

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called ?colonias...

  15. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Garcia, Bianca 1989-

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called colonias...

  16. THE DISCOVERY OF LOWER ACICULAR FERRITE 10.1 INTRODUCTION

    E-Print Network [OSTI]

    Cambridge, University of

    CHAPTER 10 THE DISCOVERY OF LOWER ACICULAR FERRITE 10.1 INTRODUCTION There is general agreement that a weld microstructure primarily containing acicu- lar ferrite will exhibit high strength and excellent of allotriomorphic ferrite, ferrite plates with aligned carbides, or grain-boundary nucleated bainite is considered

  17. A lower bound of quantum conditional mutual information

    E-Print Network [OSTI]

    Lin Zhang; Junde Wu

    2014-09-29T23:59:59.000Z

    In this paper, a lower bound of quantum conditional mutual information is obtained by employing the Peierls-Bogoliubov inequality and Golden Thompson inequality. Comparison with the bounds obtained by other researchers indicates that our result is independent of any measurements. It may give some new insights over squashed entanglement and perturbations of Markov chain states.

  18. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Hernandez, Manuel

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called ?colonias...

  19. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-Print Network [OSTI]

    Garcia, Bianca 1989-

    2011-05-06T23:59:59.000Z

    The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called colonias...

  20. RECOMMENDED TREES FOR MICHIGAN'S LOWER PENINSULA American Hornbeam

    E-Print Network [OSTI]

    Isaacs, Rufus

    slower to establish. Native to Michigan and eastern U.S. Pests: Prone to ice damage. Two-line chestnut bore can be a problem when plants are stressed DEPARTMENT OF HORTICULTURE Michigan State University Michigan State University #12;RECOMMENDED TREES FOR MICHIGAN'S LOWER PENINSULA DEPARTMENT OF HORTICULTURE

  1. Lower bounding procedure for the Asymmetric Quadratic Traveling ...

    E-Print Network [OSTI]

    2015-02-04T23:59:59.000Z

    a lower bound is to linearize the quadratic terms xijxjk for all (i, j),(j, k) ? A ..... Consider any cycle C. Since column Cp is the selected column to enter the basis we ..... some kind of subtour elimination constraint, we restrict the search to find a

  2. Lower Oil Prices: A Reason to Give Thanks GENE EPSTEIN

    E-Print Network [OSTI]

    California at Davis, University of

    Lower Oil Prices: A Reason to Give Thanks By GENE EPSTEIN Nov. 29, 2014 1:31 a.m. ET I give thanks thanks for an oil price that fell below $70 a barrel Friday, mainly because it bodes well for general early this year ("Here Comes $75 Oil," March 31). Amy Jaffe, executive director of energy

  3. Sediment Transport in the Lower Guadalupe and San Antonio Rivers

    E-Print Network [OSTI]

    Holley, Edward R.

    regions. This study was undertaken to analyze existing data and to collect field data for the lower part of the Guadalupe River and the San Antonio River. The primary sampling locations were at the U. S. Highway 59 bridges in Victoria for the Guadalupe...

  4. Extending the eigCG algorithm to non-symmetric linear systems with multiple right-hand sides

    SciTech Connect (OSTI)

    Abdou Abdel-Rehim, Kostas Orginos, Andreas Stathopoulos

    2009-11-01T23:59:59.000Z

    For Hermitian positive definite linear systems and eigenvalue problems, the eigCG algorithm is a memory efficient algorithm that solves the linear system and simultaneously computes some of its eigenvalues. The algorithm is based on the Conjugate-Gradient (CG) algorithm, however, it uses only a window of the vectors generated by the CG algorithm to compute approximate eigenvalues. The number and accuracy of the eigenvectors can be increased by solving more right-hand sides. For Hermitian systems with multiple right-hand sides, the computed eigenvectors can be used to speed up the solution of subsequent systems. The algorithm was tested on Lattice QCD problems by solving the normal equations and was shown to give large speed up factors and to remove the critical slowing down as we approach light quark masses. Here, an extension to the non-symmetric case based on the two-sided Lanczos algorithm is given. The new algorithm is tested on Lattice QCD problems and is shown to give promising results. We also study the removal of the critical slowing down and compare results with those of the eigCG algorithm. We also discuss the case when the system is gamma5-Hermitian.

  5. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, J.D.; El-Genk, M.S.

    1994-01-01T23:59:59.000Z

    Thermoelectricity is produced by applying a temperature differential to dissimilar electrically conducting or semiconducting materials, thereby producing a voltage that is proportional to the temperature difference. Thermoelectric generators use this effect to directly convert heat into electricity; however, presently-known generators have low efficiencies due to the production of high currents which in turn cause large resistive heating losses. Some thermoelectric generators operate at efficiencies between 4% and 7% in the 800{degrees} to 1200{degrees}C range. According to its major aspects and bradly stated, the present invention is an apparatus and method for producing electricity from heat. In particular, the invention is a thermoelectric generator that juxtaposes a superconducting material and a semiconducting material - so that the superconducting and the semiconducting materials touch - to convert heat energy into electrical energy without resistive losses in the temperature range below the critical temperature of the superconducting material. Preferably, an array of superconducting material is encased in one of several possible configurations within a second material having a high thermal conductivity, preferably a semiconductor, to form a thermoelectric generator.

  6. MCNP LWR Core Generator

    SciTech Connect (OSTI)

    Fischer, Noah A. [Los Alamos National Laboratory

    2012-08-14T23:59:59.000Z

    The reactor core input generator allows for MCNP input files to be tailored to design specifications and generated in seconds. Full reactor models can now easily be created by specifying a small set of parameters and generating an MCNP input for a full reactor core. Axial zoning of the core will allow for density variation in the fuel and moderator, with pin-by-pin fidelity, so that BWR cores can more accurately be modeled. LWR core work in progress: (1) Reflectivity option for specifying 1/4, 1/2, or full core simulation; (2) Axial zoning for moderator densities that vary with height; (3) Generating multiple types of assemblies for different fuel enrichments; and (4) Parameters for specifying BWR box walls. Fuel pin work in progress: (1) Radial and azimuthal zoning for generating further unique materials in fuel rods; (2) Options for specifying different types of fuel for MOX or multiple burn assemblies; (3) Additional options for replacing fuel rods with burnable poison rods; and (4) Control rod/blade modeling.

  7. MHD Generating system

    DOE Patents [OSTI]

    Petrick, Michael (Joliet, IL); Pierson, Edward S. (Chicago, IL); Schreiner, Felix (Mokena, IL)

    1980-01-01T23:59:59.000Z

    According to the present invention, coal combustion gas is the primary working fluid and copper or a copper alloy is the electrodynamic fluid in the MHD generator, thereby eliminating the heat exchangers between the combustor and the liquid-metal MHD working fluids, allowing the use of a conventional coalfired steam bottoming plant, and making the plant simpler, more efficient and cheaper. In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator. The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power. The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere. Where the combustion gas contains sulfur, oxygen is bubbled through a side loop to remove sulfur therefrom as a concentrated stream of sulfur dioxide. The combustor is operated substoichiometrically to control the oxide level in the copper.

  8. Computational Fluid Dynamic Analysis of the VHTR Lower Plenum Standard Problem

    SciTech Connect (OSTI)

    Richard W. Johnson; Richard R. Schultz

    2009-07-01T23:59:59.000Z

    The United States Department of Energy is promoting the resurgence of nuclear power in the U. S. for both electrical power generation and production of process heat required for industrial processes such as the manufacture of hydrogen for use as a fuel in automobiles. The DOE project is called the next generation nuclear plant (NGNP) and is based on a Generation IV reactor concept called the very high temperature reactor (VHTR), which will use helium as the coolant at temperatures ranging from 450 C to perhaps 1000 C. While computational fluid dynamics (CFD) has not been used for past safety analysis for nuclear reactors in the U. S., it is being considered for safety analysis for existing and future reactors. It is fully recognized that CFD simulation codes will have to be validated for flow physics reasonably close to actual fluid dynamic conditions expected in normal and accident operational situations. To this end, experimental data have been obtained in a scaled model of a narrow slice of the lower plenum of a prismatic VHTR. The present report presents results of CFD examinations of these data to explore potential issues with the geometry, the initial conditions, the flow dynamics and the data needed to fully specify the inlet and boundary conditions; results for several turbulence models are examined. Issues are addressed and recommendations about the data are made.

  9. A Heat Transfer Model for a Stratified Corium-Metal Pool in the Lower Plenum of a Nuclear Reactor

    SciTech Connect (OSTI)

    M. S. Sohal; L. J. Siefken

    1999-08-01T23:59:59.000Z

    This preliminary design report describes a model for heat transfer in a corium-metal stratified pool. It was decided to make use of the existing COUPLE model. Currently available correlations for natural convection heat transfer in a pool with and without internal heat generation were obtained. The appropriate correlations will be incorporated in the existing COUPLE model. Heat conduction and solidification modeling will be done with existing algorithms in the COUPLE. Assessment of the new model will be done by simple energy conservation problems.

  10. A Heat Transfer Model for a Stratified Corium-metal Pool in the Lower Plenum of a Nuclear Reactor

    SciTech Connect (OSTI)

    Sohal, Manohar Singh; Siefken, Larry James

    1999-08-01T23:59:59.000Z

    This preliminary design report describes a model for heat transfer in a corium-metal stratified pool. It was decided to make use of the existing COUPLE model. Currently available correlations for natural convection heat transfer in a pool with and without internal heat generation were obtained. The appropriate correlations will be incorporated in the existing COUPLE model. Heat conduction and solidification modeling will be done with existing algorithms in the COUPLE. Assessment of the new model will be done by simple energy conservation problems.

  11. Fairness in optimal routing algorithms

    E-Print Network [OSTI]

    Goos, Jeffrey Alan

    1988-01-01T23:59:59.000Z

    Member) Alberto Garcia-Diaz (Member) J. W. Howze (Head of Department) December 1988 ABSTRACT Fairness in Optimal Routing Algorithms (December- 1988) JefFrey Alan Goos, B. S. , University of Missouri Co ? Chairmen of Advisory Committee: Dr. Wei K... appreciation to my committee co-chairmen, Drs. hei K. Tsai and Pierce E. Cantrell, f' or their support and advice. In addition, I would like to thank Drs. Jerry D. Gibson and Alberto Garcia-Diaz for their time and usef'ul comments in reviewing this document...

  12. Using Backup Generators: Choosing the Right Backup Generator...

    Office of Environmental Management (EM)

    Choose the generator's fuel source-Backup generators are typically powered by either diesel fuel or natural gas, and both have associated advantages and disadvantages. Speak with...

  13. Spherical neutron generator

    DOE Patents [OSTI]

    Leung, Ka-Ngo

    2006-11-21T23:59:59.000Z

    A spherical neutron generator is formed with a small spherical target and a spherical shell RF-driven plasma ion source surrounding the target. A deuterium (or deuterium and tritium) ion plasma is produced by RF excitation in the plasma ion source using an RF antenna. The plasma generation region is a spherical shell between an outer chamber and an inner extraction electrode. A spherical neutron generating target is at the center of the chamber and is biased negatively with respect to the extraction electrode which contains many holes. Ions passing through the holes in the extraction electrode are focused onto the target which produces neutrons by D-D or D-T reactions.

  14. Hyperbolic Graph Generator

    E-Print Network [OSTI]

    Aldecoa, Rodrigo; Krioukov, Dmitri

    2015-01-01T23:59:59.000Z

    Networks representing many complex systems in nature and society share some common structural properties like heterogeneous degree distributions and strong clustering. Recent research on network geometry has shown that those real networks can be adequately modeled as random geometric graphs in hyperbolic spaces. In this paper, we present a computer program to generate such graphs. Besides real-world-like networks, the program can generate random graphs from other well-known graph ensembles, such as the soft configuration model, random geometric graphs on a circle, or Erd\\H{o}s-R\\'enyi random graphs. The simulations show a good match between the expected values of different network structural properties and the corresponding empirical values measured in generated graphs, confirming the accurate behavior of the program.

  15. A Three-level BDDC algorithm for saddle point problems

    SciTech Connect (OSTI)

    Tu, X.

    2008-12-10T23:59:59.000Z

    BDDC algorithms have previously been extended to the saddle point problems arising from mixed formulations of elliptic and incompressible Stokes problems. In these two-level BDDC algorithms, all iterates are required to be in a benign space, a subspace in which the preconditioned operators are positive definite. This requirement can lead to large coarse problems, which have to be generated and factored by a direct solver at the beginning of the computation and they can ultimately become a bottleneck. An additional level is introduced in this paper to solve the coarse problem approximately and to remove this difficulty. This three-level BDDC algorithm keeps all iterates in the benign space and the conjugate gradient methods can therefore be used to accelerate the convergence. This work is an extension of the three-level BDDC methods for standard finite element discretization of elliptic problems and the same rate of convergence is obtained for the mixed formulation of the same problems. Estimate of the condition number for this three-level BDDC methods is provided and numerical experiments are discussed.

  16. Pulse compression in plasma: generation of femtosecond pulses without CPA

    E-Print Network [OSTI]

    frequency laser beam into the energy of a short lowerfrequency laser pulse. The standard approach to generating highintensity ultrashort laser pulses is Chirped Pulse Amplification [1] (CPA), in which a laser Garching, Germany Abstract: Laser pulses can be e#ciently compressed to femto second duration when

  17. Advancing Next-Generation Energy in Indian Country (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-08-01T23:59:59.000Z

    This fact sheet provides information on Tribes in the lower 48 states selected to receive assistance from the Strategic Technical Assistance Response Team (START) Program, a U.S. Department of Energy Office of Indian Energy Policy and Programs (DOE-IE) initiative to provide technical expertise to support the development of next-generation energy projects in Indian Country.

  18. Method and apparatus for generating low energy nuclear particles

    DOE Patents [OSTI]

    Powell, J.R.; Reich, M.; Ludewig, H.; Todosow, M.

    1999-02-09T23:59:59.000Z

    A particle accelerator generates an input particle beam having an initial energy level above a threshold for generating secondary nuclear particles. A thin target is rotated in the path of the input beam for undergoing nuclear reactions to generate the secondary particles and correspondingly decrease energy of the input beam to about the threshold. The target produces low energy secondary particles and is effectively cooled by radiation and conduction. A neutron scatterer and a neutron filter are also used for preferentially degrading the secondary particles into a lower energy range if desired. 18 figs.

  19. Method and apparatus for generating low energy nuclear particles

    DOE Patents [OSTI]

    Powell, James R. (Shoreham, NY); Reich, Morris (Flushing, NY); Ludewig, Hans (Brookhaven, NY); Todosow, Michael (Miller Place, NY)

    1999-02-09T23:59:59.000Z

    A particle accelerator (12) generates an input particle beam having an initial energy level above a threshold for generating secondary nuclear particles. A thin target (14) is rotated in the path of the input beam for undergoing nuclear reactions to generate the secondary particles and correspondingly decrease energy of the input beam to about the threshold. The target (14) produces low energy secondary particles and is effectively cooled by radiation and conduction. A neutron scatterer (44) and a neutron filter (42) are also used for preferentially degrading the secondary particles into a lower energy range if desired.

  20. On-Site Diesel Generation- How You Can Reduce Your Energy Costs

    E-Print Network [OSTI]

    Charles, D.

    Interruptible power rates, Utility special rate negotiations, and the emergence of a spot electrical power market all can lead to lower industrial energy costs. The installation of low cost on-site diesel powered generation, or the proposed...

  1. The Generation Effect and Memory

    E-Print Network [OSTI]

    Rosner, Zachary Alexander

    2012-01-01T23:59:59.000Z

    M. A. (2007). The generation effect: A meta- analyticBjork, R. A. (1988). The generation effect: Support for aE. J. (2012). The next generation: The value of reminding.

  2. Options for Generating Steam Efficiently

    E-Print Network [OSTI]

    Ganapathy, V.

    This paper describes how plant engineers can efficiently generate steam when there are steam generators and Heat Recovery Steam Generators in their plant. The process consists of understanding the performance characteristics of the various equipment...

  3. WECC Variable Generation Planning Reference Book: Appendices

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Du, Pengwei; Etingov, Pavel V.; Ma, Jian; Vyakaranam, Bharat

    2013-05-13T23:59:59.000Z

    The document titled WECC Variable Generation Planning Reference Book. This book is divided into two volumes; one is the main document (volume 1)and the other is appendices (volume 2). The main document is a collection of the best practices and the information regarding the application and impact of variables generation on power system planning. This volume (appendices) has additional information on the following topics: Probabilistic load flow problems. 2. Additional useful indices. 3. high-impact low-frequency (HILF) events. 4. Examples of wide-area nomograms. 5. Transmission line ratings, types of dynamic rating methods. 6. Relative costs per MW-km of different electric power transmission technologies. 7. Ultra-high voltage (UHV) transmission. 8.High voltage direct current (VSC-HVDC). 9. HVDC. 10. Rewiring of existing transmission lines. 11. High-temperature low sag (HTLS) conductors. 12. The direct method and energy functions for transient stability analysis in power systems. 13.Blackouts caused by voltage instability. 14. Algorithm for parameter continuation predictor-corrector methods. 15. Approximation techniques available for security regions. 16. Impacts of wind power on power system small signals stability. 17. FIDVR. 18. FACTS. 19. European planning standard and practices. 20. International experience in wind and solar energy sources. 21. Western Renewable Energy Zones (WREZ). 22. various energy storage technologies. 23. demand response. 24. BA consolidation and cooperation options. 25. generator power management requirements and 26. European planning guidelines.

  4. Quantum random-walk search algorithm

    SciTech Connect (OSTI)

    Shenvi, Neil; Whaley, K. Birgitta [Department of Chemistry, University of California, Berkeley, California 94720 (United States); Kempe, Julia [Department of Chemistry, University of California, Berkeley, California 94720 (United States); Computer Science Division, EECS, University of California, Berkeley, California 94720 (United States); CNRS-LRI, UMR 8623, Universite de Paris-Sud, 91405 Orsay (France)

    2003-05-01T23:59:59.000Z

    Quantum random walks on graphs have been shown to display many interesting properties, including exponentially fast hitting times when compared with their classical counterparts. However, it is still unclear how to use these novel properties to gain an algorithmic speedup over classical algorithms. In this paper, we present a quantum search algorithm based on the quantum random-walk architecture that provides such a speedup. It will be shown that this algorithm performs an oracle search on a database of N items with O({radical}(N)) calls to the oracle, yielding a speedup similar to other quantum search algorithms. It appears that the quantum random-walk formulation has considerable flexibility, presenting interesting opportunities for development of other, possibly novel quantum algorithms.

  5. Enhanced algorithms for stochastic programming

    SciTech Connect (OSTI)

    Krishna, A.S.

    1993-09-01T23:59:59.000Z

    In this dissertation, we present some of the recent advances made in solving two-stage stochastic linear programming problems of large size and complexity. Decomposition and sampling are two fundamental components of techniques to solve stochastic optimization problems. We describe improvements to the current techniques in both these areas. We studied different ways of using importance sampling techniques in the context of Stochastic programming, by varying the choice of approximation functions used in this method. We have concluded that approximating the recourse function by a computationally inexpensive piecewise-linear function is highly efficient. This reduced the problem from finding the mean of a computationally expensive functions to finding that of a computationally inexpensive function. Then we implemented various variance reduction techniques to estimate the mean of a piecewise-linear function. This method achieved similar variance reductions in orders of magnitude less time than, when we directly applied variance-reduction techniques directly on the given problem. In solving a stochastic linear program, the expected value problem is usually solved before a stochastic solution and also to speed-up the algorithm by making use of the information obtained from the solution of the expected value problem. We have devised a new decomposition scheme to improve the convergence of this algorithm.

  6. Nuclear Power Generating Facilities (Maine)

    Broader source: Energy.gov [DOE]

    The first subchapter of the statute concerning Nuclear Power Generating Facilities provides for direct citizen participation in the decision to construct any nuclear power generating facility in...

  7. Next-Generation Photovoltaic Technologies

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

    Next-Generation Photovoltaic Technologies Next-Generation Photovoltaic Technologies Print Monday, 06 February 2012 15:48 Organic solar cells based on the polymerfullerene bulk...

  8. Algorithm for a microfluidic assembly line

    E-Print Network [OSTI]

    Tobias M. Schneider; Shreyas Mandre; Michael P. Brenner

    2011-01-19T23:59:59.000Z

    Microfluidic technology has revolutionized the control of flows at small scales giving rise to new possibilities for assembling complex structures on the microscale. We analyze different possible algorithms for assembling arbitrary structures, and demonstrate that a sequential assembly algorithm can manufacture arbitrary 3D structures from identical constituents. We illustrate the algorithm by showing that a modified Hele-Shaw cell with 7 controlled flowrates can be designed to construct the entire English alphabet from particles that irreversibly stick to each other.

  9. Electron heating using lower hybrid waves in the PLT tokamak

    SciTech Connect (OSTI)

    Bell, R.E.; Bernabei, S.; Cavallo, A.; Chu, T.K.; Luce, T.; Motley, R.; Ono, M.; Stevens, J.; von Goeler, S.

    1987-06-01T23:59:59.000Z

    Lower hybrid waves with a narrow high velocity wave spectrum have been used to achieve high central electron temperatures in a tokamak plasma. Waves with a frequency of 2.45 GHz launched by a 16-waveguide grill at a power level less than 600 kW were used to increase the central electron temperature of the PLT plasma from 2.2 keV to 5 keV. The magnitude of the temperature increase depends strongly on the phase difference between the waveguides and on the direction of the launched wave. A reduction in the central electron thermal diffusivity is associated with the peaked electron temperature profiles of lower hybrid current-driven plasmas. 16 refs.

  10. Lowering the threshold in the DAMA dark matter detector

    SciTech Connect (OSTI)

    Kelso, Chris [Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112 (United States)

    2014-06-24T23:59:59.000Z

    We look at two improvements related to the DAMA/LIBRA dark matter detector. We show how using a more optimized binning scheme of the current data can lead to significantly tighter contraints on the compatible regions of the WIMP parameter space. In addition, the PMTs of the detector were upgraded in 2010, allowing the low energy threshold to be lowered from 2 keVee to 1 keVee. We examine the implications for the dark matter interpretion of the DAMA modulation with data in this new energy region. Specifically, we focus on how well the degeneracy between the low mass and high mass regions can be removed by this new data. We find that the lower threshold data should rule out one of the two mass ranges in the spin-independent case at a minimum of the 2.6? level in the worst case scenario.

  11. MUSIC-TYPE ALGORITHM FOR EDDY-CURRENT NONDESTRUC-TIVE EVALUATION OF SMALL DEFECTS IN METAL PLATES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    MUSIC-TYPE ALGORITHM FOR EDDY-CURRENT NONDESTRUC- TIVE EVALUATION OF SMALL DEFECTS IN METAL PLATES Eddy-Current nondestructive evaluation of metal plates is of interest in a wide range of applications in the lower frequency band (kHz) for eddy-current testing, to retrieve small void defects inside a conducting

  12. Generating Resources Advisory Committee

    E-Print Network [OSTI]

    Generating Resources Advisory Committee May 28, 2014 Steve Simmons Gillian Charles #12;2 9:30 AM plants 10:45 AM Break 11:00 AM Peaking Technologies Continued... 11:30 AM Combined Cycle Combustion Turbine and Utility Scale Solar PV Reference plant updates Levelized cost of energy 12:00 PM Lunch

  13. Generating Resources Advisory Committee

    E-Print Network [OSTI]

    Generating Resources Advisory Committee February 27, 2014 Steven Simmons and Gillian Charles Upcoming Symposium 9:15 am Natural Gas Peaking Technologies Technology Trends Proposed reference plant Costing, Economies of Scale, Normalizations Reference Plants 12:30 pm Discussion of Next GRAC Meetings

  14. New wave generation

    E-Print Network [OSTI]

    Mercier, Matthieu J; Mathur, Manikandan; Gostiaux, Louis; Peacock, Thomas; Dauxois, Thierry

    2015-01-01T23:59:59.000Z

    We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (2007). This mechanism, which involves a tunable source comprised of oscillating plates, has so far been used for a few fundamental studies of internal waves, but its full potential has yet to be realized. Our studies reveal that this approach is capable of producing a wide variety of two-dimensional wave fields, including plane waves, wave beams and discrete vertical modes in finite-depth stratifications. The effects of discretization by a finite number of plates, forcing amplitude and angle of propagation are investigated, and it is found that the method is remarkably efficient at generating a complete wave field despite forcing only one velocity component in a controllable manner. We furthermore find that the nature of the radiated wave field is well predicted using Fourier transforms of the spatial structure of the wave generator.

  15. CONSULTANT REPORT DISTRIBUTED GENERATION

    E-Print Network [OSTI]

    an independent cost analysis to interconnect and integrate increased penetration levels of renewable distributed costs. The Energy Commission considers this study a first step toward the 2012 Integrated Energy Policy Generation Integration Cost Study: Analytical Framework. California Energy Commission. CEC2002013007. i

  16. Energy generation in stars

    E-Print Network [OSTI]

    B. V. Vasiliev

    2001-10-29T23:59:59.000Z

    It is a current opinion that thermonuclear fusion is the main source of the star activity. It is shown below that this source is not unique. There is another electrostatic mechanism of the energy generation which accompanies thermonuclear fusion. Probably, this approach can solve the solar neutrino problem.

  17. Chitinozoans in the subsurface Lower Paleozoic of West Texas

    E-Print Network [OSTI]

    Kauffman, A. E.

    1971-10-22T23:59:59.000Z

    THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS October 22, 1971 Paper 54 CHITINOZOANS IN THE SUBSURFACE LOWER PALEOZOIC OF WEST TEXAS A. E. KAUFFMAN Humble Oil & Refining Company, Midland, Texas ABSTRACT Studies based on both comprehensive... are found throughout the West Texas area. As generally accepted by operational petroleum geologists, the Simpson Group comprises the Joins Formation (limestone and dolomite); Oil Creek Formation (sandstone, shale, and limestone); McLish Formation (sand...

  18. Citrus Varieties for the Lower Rio Grande Valley.

    E-Print Network [OSTI]

    Wood, J. F. (John Fielding); Friend, W. H. (William Heartsill)

    1941-01-01T23:59:59.000Z

    Lf BRARY, /A & NI COLLEGE, b TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR, College Station, Texas CITRUS VARIETIES FOR THE LOWER RIO GRANDE VALLEY Mr. H. FRIEND AND J. F. WOOD Division of Horticulture LIBRARY \\gxict... perishable nature of this type of fruit. Limes and lemons may be grown by persons who are financially able to equip their orchards with heaters. There are many types of citrus fruits that may be grown as ornamentals or for special purposes, but none...

  19. Nonlinear lower-hybrid oscillations in cold plasma

    SciTech Connect (OSTI)

    Maity, Chandan; Chakrabarti, Nikhil [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Calcutta 700 064 (India); Sengupta, Sudip [Institute of Plasma Research, Bhat, Gandhinagar 382428 (India)

    2010-08-15T23:59:59.000Z

    In a fluid description nonlinear lower-hybrid oscillation have been studied in a cold quasineutral magnetized plasma using Lagrangian variables. An exact analytical solution with nontrivial space and time dependence is obtained. The solution demonstrates that under well defined initial and boundary conditions the amplitude of the oscillations increases due to nonlinearity and then comes back to its initial condition again. These solutions indicate a class of nonlinear transient structures in magnetized plasma.

  20. Resource analysis of the quantum linear system algorithm

    E-Print Network [OSTI]

    Artur Scherer; Benot Valiron; Siun-Chuon Mau; Scott Alexander; Eric van den Berg; Thomas E. Chapuran

    2015-05-25T23:59:59.000Z

    We provide a detailed estimate for the logical resource requirements of the quantum linear system algorithm (QLSA) [Phys. Rev. Lett. 103, 150502 (2009)] including the recently described generalization [Phys. Rev. Lett. 110, 250504 (2013)]. Our resource estimates are based on the standard quantum-circuit model of quantum computation; they comprise circuit width, circuit depth, the number of qubits and ancilla qubits employed, and the overall number of elementary quantum gate operations as well as more specific gate counts for each elementary fault-tolerant gate from the standard set {X, Y, Z, H, S, T, CNOT}. To perform these estimates, we used an approach that combines manual analysis with automated estimates generated via the Quipper quantum programming language and compiler. Our estimates pertain to the example problem size N=332,020,680 beyond which, according to a crude big-O complexity comparison, QLSA is expected to run faster than the best known classical linear-system solving algorithm. For this problem size, a desired calculation accuracy 0.01 requires an approximate circuit width 340 and circuit depth of order $10^{25}$ if oracle costs are excluded, and a circuit width and depth of order $10^8$ and $10^{29}$, respectively, if oracle costs are included, indicating that the commonly ignored oracle resources are considerable. In addition to providing detailed logical resource estimates, it is also the purpose of this paper to demonstrate explicitly how these impressively large numbers arise with an actual circuit implementation of a quantum algorithm. While our estimates may prove to be conservative as more efficient advanced quantum-computation techniques are developed, they nevertheless provide a valid baseline for research targeting a reduction of the resource requirements, implying that a reduction by many orders of magnitude is necessary for the algorithm to become practical.

  1. Optimization Online - Efficient Heuristic Algorithms for Maximum ...

    E-Print Network [OSTI]

    T. G. J. Myklebust

    2012-11-19T23:59:59.000Z

    Nov 19, 2012 ... Efficient Heuristic Algorithms for Maximum Utility Product Pricing Problems. T. G. J. Myklebust(tmyklebu ***at*** csclub.uwaterloo.ca)

  2. Efficient Algorithmic Techniques for Several Multidimensional ...

    E-Print Network [OSTI]

    Mugurel

    2008-10-23T23:59:59.000Z

    Politehnica University of Bucharest, Romania, mugurel.andreica@cs.pub.ro. Abstract: In this paper I present several novel, efficient, algorithmic techniques for.

  3. Exact Algorithms for Combinatorial Optimization Problems with ...

    E-Print Network [OSTI]

    2012-03-30T23:59:59.000Z

    using stochastic objective functions. Potential investment ..... An algorithm to construct a minimum directed spanning tree in a directed network. In. Developments...

  4. Parallel Interval Continuous Global Optimization Algorithms

    E-Print Network [OSTI]

    abdeljalil benyoub

    2002-07-19T23:59:59.000Z

    Jul 19, 2002 ... Abstract: We theorically study, on a distributed memory architecture, the parallelization of Hansen's algorithm for the continuous global...

  5. Algorithmic Cooling in Liquid State NMR

    E-Print Network [OSTI]

    Yosi Atia; Yuval Elias; Tal Mor; Yossi Weinstein

    2014-11-17T23:59:59.000Z

    Algorithmic cooling is a method that employs thermalization to increase the qubits' purification level, namely it reduces the qubit-system's entropy. We utilized gradient ascent pulse engineering (GRAPE), an optimal control algorithm, to implement algorithmic cooling in liquid state nuclear magnetic resonance. Various cooling algorithms were applied onto the three qubits of 13C2-trichloroethylene, cooling the system beyond Shannon's entropy bound in several different ways. For example, in one experiment a carbon qubit was cooled by a factor of 4.61. This work is a step towards potentially integrating tools of NMR quantum computing into in vivo magnetic resonance spectroscopy.

  6. algorithmics: Topics by E-print Network

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

    Algorithm Uncertainty Principles Mathematical Physics (arXiv) Summary: Previously, Bennet and Feynman asked if Heisenberg's uncertainty principle puts a limitation on a quantum...

  7. algorithms: Topics by E-print Network

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

    Algorithm Uncertainty Principles Mathematical Physics (arXiv) Summary: Previously, Bennet and Feynman asked if Heisenberg's uncertainty principle puts a limitation on a quantum...

  8. Environmental audit, Bonneville Power Administration, lower Columbia area

    SciTech Connect (OSTI)

    Not Available

    1990-11-01T23:59:59.000Z

    This report documents the results of the US Department of Energy's (DOE's) Environmental Audit conducted by the DOE Headquarters Office of Environmental Audit within the Bonneville Power Administration's (BPA's) Lower Columbia Area. The BPA facilities included in the Audit are the Ross Complex in Vancouver, Washington; the substations of North Bonneville, North Bonneville Annex, Camas, and Longview within the state of Washington; and the Acton and Troutdale Substations within the state of Oregon. The independent Audit was conducted by a team of professionals from DOE and contractors. The purpose of the Audit is to provide the Secretary of Energy, Admiral James D. Watkins, Ret., with the status of environmental programs within BPA's Lower Columbia Area. The Environmental Audit team identified 25 findings dealing with the lack of conformance with federal and state laws and regulations and DOE Orders, and 7 findings in which BMPs were not attained. Although all findings require corrective action, none required cessation of operations or reflect situations that present an immediate risk to public health or the environment. The Audit team noted inadequacies in PCB management included storage, labeling, reporting, and spill control. The most significant causal factors for the findings include lack of policy implementation throughout the Lower Columbia Area, inadequate training of personnel charged with environmental protection, lack of standard operating procedures for many programs, lack of reviews and appraisals, and an inaccurate perception of low risk for environmental concerns.

  9. Public policy implications of deepening the lower Mississippi

    SciTech Connect (OSTI)

    Cocchiara, J.G.

    1983-11-01T23:59:59.000Z

    The Mississippi River and its tributary system serves the industrial and agricultural heartland of the United States. In terms of total tonnage, the deep water channel of the lower Mississippi, stretching 253 miles from the Gulf of Mexico to Baton Rouge, is the largest port complex in the world. The vast majority of the cargo carried on the river is carried in bulk, a major portion of which could benefit from a deeper river channel. The Corps of Engineers has recommended a 55 foot channel to Baton Rouge, but the Reagan administration has insisted that the federal government will no longer fully fund such projects. In response, the State of Louisiana, under the direction of Governor David C. Treen, has conducted its own independent in-depth evaluation of providing deeper draft access to the lower Mississippi. A special task force established for this purpose recently concluded a year long investigation. On September 2, it issued a recommendation for a phased deepening project, at a significantly lower cost than the Corps recommended plan, in combination with private development of offshore topping-off facilities.

  10. Lower Columbia River Terminal Fisheries Research Project : Final Environmental Assessment.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1995-04-01T23:59:59.000Z

    This notice announces BPA`S`s decision to fund the Oregon Department of Fish and Wildlife (ODFW), the Washington Department of Fish and Wildlife (WDFW), and the Clatsop Economic Development Committee for the Lower Columbia River Terminal Fisheries Research Project (Project). The Project will continue the testing of various species/stocks, rearing regimes, and harvest options for terminal fisheries, as a means to increase lower river sport and commercial harvest of hatchery fish, while providing both greater protection of weaker wild stocks and increasing the return of upriver salmon runs to potential Zone 6 Treaty fisheries. The Project involves relocating hatchery smolts to new, additional pen locations in three bays/sloughs in the lower Columbia River along both the Oregon and Washington sides. The sites are Blind Slough and Tongue Point in Clatsop County, Oregon, and Grays Bay/Deep River, Wahkiakum County, Washington. The smolts will be acclimated for various lengths of time in the net pens and released from these sites. The Project will expand upon an existing terminal fisheries project in Youngs Bay, Oregon. The Project may be expanded to other sites in the future, depending on the results of this initial expansion. BPA`S has determined the project is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an environmental impact statement is not required, and BPA`S is issuing this FONSI.

  11. Lower Metal Enrichment of Virialized Gas in Minihalos

    E-Print Network [OSTI]

    Renyue Cen; Mario A. Riquelme

    2007-04-26T23:59:59.000Z

    We differentiate between the metal enrichment of the gas in virialized minihalos and that of the intergalactic medium at high redshift, pertinent to cosmological reionization, with the initial expectation that gas in the high density regions within formed dark matter halos may be more robust thus resistant to mixing with lower density intergalactic medium. Using detailed hydrodynamic simulations of gas clouds in minihalos subject to destructive processes associated with the encompassing intergalactic shocks carrying metal-enriched gas, we find, as an example, that, for realistic shocks of velocities of 10-100km/s, more than (90%,65%) of the high density gas with rho>500 rhob inside a minihalo virialized at z=10 of mass (10^7,10^6)Msun remains at a metallicity lower than 3% of that of the intergalactic medium by redshift z=6. It may be expected that the high density gas in minihalos becomes fuel for subsequent star formation, when they are incorporated into larger halos where efficient atomic cooling can induce gas condensation hence star formation. Since minihalos virialize at high redshift when the universe is not expected to have been significantly reionized, the implication is that gas in virialized minihalos may provide an abundant reservoir of primordial gas to possibly allow for the formation of Population-III metal-free stars to extend to much lower redshift than otherwise expected based on the enrichment of intergalactic medium.

  12. A preliminary evaluation of a speed threshold incident detection algorithm

    E-Print Network [OSTI]

    Kolb, Stephanie Lang

    1996-01-01T23:59:59.000Z

    Algorithm . . . . . . . . . . . . , . Event Scan Algorithm . Neural Network . . . . . . . . . . . . . . . , . . . . . . California Algorithm ?8 with Fuzzy Logic Selected Algorithms Page 20 21 22 24 24 25 26 27 28 28 30 32 32 33 33 33 33... 7 California Algorithm ?10 Decision Tree 12 14 15 8 Speed/Flow Curve 9 McMaster Algorithm Template 15 25 10 Traffic Flow Relationships Applied in the Dynamic Model Algorithm. . . 26 11 Multi-Layer Feed-Forward Neural Network 12 Membership...

  13. Classified Comfort Noise Generation for Efficient Voice Transmission Yasheng Qian, Wei-Shou Hsu, Peter Kabal

    E-Print Network [OSTI]

    Kabal, Peter

    speech gaps. This is known as discontinuous transmission (DTX). For Voice-over-Internet (VoIP) networks, during speech pauses transmission occurs at a lower bit rate (and lower power). This reduced powerClassified Comfort Noise Generation for Efficient Voice Transmission Yasheng Qian, Wei-Shou Hsu

  14. Feature recognition applications in mesh generation

    SciTech Connect (OSTI)

    Tautges, T.J. [Sandia National Labs., Albuquerque, NM (United States); Liu, S.S.; Lu, Y.; Kraftcheck, J.; Gadh, R. [Wisconsin Univ., Madison, WI (United States). Mechanical Engineering Dept.

    1997-06-01T23:59:59.000Z

    The use of feature recognition as part of an overall decomposition-based hexahedral meshing approach is described in this paper. The meshing approach consists of feature recognition, using a c-loop or hybrid c-loop method, and the use of cutting surfaces to decompose the solid model. These steps are part of an iterative process, which proceeds either until no more features can be recognized or until the model has been completely decomposed into meshable sub-volumes. This method can greatly reduce the time required to generate an all-hexahedral mesh, either through the use of more efficient meshing algorithms on more of the geometry or by reducing the amount of manual decomposition required to mesh a volume.

  15. A NEW GENERATION CHEMICAL FLOODING SIMULATOR

    SciTech Connect (OSTI)

    Gary A. Pope; Kamy Sepehrnoori; Mojdeh Delshad

    2005-01-01T23:59:59.000Z

    The premise of this research is that a general-purpose reservoir simulator for several improved oil recovery processes can and should be developed so that high-resolution simulations of a variety of very large and difficult problems can be achieved using state-of-the-art algorithms and computers. Such a simulator is not currently available to the industry. The goal of this proposed research is to develop a new-generation chemical flooding simulator that is capable of efficiently and accurately simulating oil reservoirs with at least a million gridblocks in less than one day on massively parallel computers. Task 1 is the formulation and development of solution scheme, Task 2 is the implementation of the chemical module, and Task 3 is validation and application. In this final report, we will detail our progress on Tasks 1 through 3 of the project.

  16. GASIFICATION FOR DISTRIBUTED GENERATION

    SciTech Connect (OSTI)

    Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

    2000-05-01T23:59:59.000Z

    A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

  17. The Need for Language Repair The Reformation Algorithm Discussion Reformation: A Domain-Independent Algorithm

    E-Print Network [OSTI]

    St Andrews, University of

    The Need for Language Repair The Reformation Algorithm Discussion Reformation: A Domain of Edinburgh University of St Andrews, 27th November 2013 #12;The Need for Language Repair The Reformation Algorithm Discussion Outline 1 The Need for Language Repair 2 The Reformation Algorithm 3 Discussion #12;The

  18. MULTI-CRITERIA SEARCH ALGORITHM: AN EFFICIENT APPROXIMATE K-NN ALGORITHM FOR IMAGE RETRIEVAL

    E-Print Network [OSTI]

    MULTI-CRITERIA SEARCH ALGORITHM: AN EFFICIENT APPROXIMATE K-NN ALGORITHM FOR IMAGE RETRIEVAL Mehdi-NN search in large scale image databases, based on top-k multi-criteria search tech- niques. The method retrieval, stor- age requirements and update cost. The search algorithm delivers ap- proximate results

  19. Page Replacement Algorithms To use a simulation for evaluating various page replacement algorithms studied in class.

    E-Print Network [OSTI]

    Stojmenovic, Ivan

    Operating Systems CSI3131 Lab 4 Winter 2011 Page Replacement Algorithms Objective To use a simulation for evaluating various page replacement algorithms studied in class. Description (Please read to compare the performance of each page replacement algorithm. The constructor of this class contains

  20. Fuel cell generator energy dissipator

    DOE Patents [OSTI]

    Veyo, Stephen Emery (Murrysville, PA); Dederer, Jeffrey Todd (Valencia, PA); Gordon, John Thomas (Ambridge, PA); Shockling, Larry Anthony (Pittsburgh, PA)

    2000-01-01T23:59:59.000Z

    An apparatus and method are disclosed for eliminating the chemical energy of fuel remaining in a fuel cell generator when the electrical power output of the fuel cell generator is terminated. During a generator shut down condition, electrically resistive elements are automatically connected across the fuel cell generator terminals in order to draw current, thereby depleting the fuel

  1. Energy Replacement Generation Tax Exemption

    Broader source: Energy.gov [DOE]

    Under the Energy Replacement Generation Tax Exemption, the following facilities are exempt from the replacement tax:

  2. Calibrated vapor generator source

    DOE Patents [OSTI]

    Davies, J.P.; Larson, R.A.; Goodrich, L.D.; Hall, H.J.; Stoddard, B.D.; Davis, S.G.; Kaser, T.G.; Conrad, F.J.

    1995-09-26T23:59:59.000Z

    A portable vapor generator is disclosed that can provide a controlled source of chemical vapors, such as, narcotic or explosive vapors. This source can be used to test and calibrate various types of vapor detection systems by providing a known amount of vapors to the system. The vapor generator is calibrated using a reference ion mobility spectrometer. A method of providing this vapor is described, as follows: explosive or narcotic is deposited on quartz wool, placed in a chamber that can be heated or cooled (depending on the vapor pressure of the material) to control the concentration of vapors in the reservoir. A controlled flow of air is pulsed over the quartz wool releasing a preset quantity of vapors at the outlet. 10 figs.

  3. Calibrated vapor generator source

    DOE Patents [OSTI]

    Davies, John P. (Idaho Falls, ID); Larson, Ronald A. (Idaho Falls, ID); Goodrich, Lorenzo D. (Shelley, ID); Hall, Harold J. (Idaho Falls, ID); Stoddard, Billy D. (Idaho Falls, ID); Davis, Sean G. (Idaho Falls, ID); Kaser, Timothy G. (Idaho Falls, ID); Conrad, Frank J. (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    A portable vapor generator is disclosed that can provide a controlled source of chemical vapors, such as, narcotic or explosive vapors. This source can be used to test and calibrate various types of vapor detection systems by providing a known amount of vapors to the system. The vapor generator is calibrated using a reference ion mobility spectrometer. A method of providing this vapor is described, as follows: explosive or narcotic is deposited on quartz wool, placed in a chamber that can be heated or cooled (depending on the vapor pressure of the material) to control the concentration of vapors in the reservoir. A controlled flow of air is pulsed over the quartz wool releasing a preset quantity of vapors at the outlet.

  4. Ion beam generating apparatus

    DOE Patents [OSTI]

    Brown, Ian G. (1088 Woodside Rd., Berkeley, CA 94708); Galvin, James (2 Commodore #276, Emeryville, CA 94608)

    1987-01-01T23:59:59.000Z

    An ion generating apparatus utilizing a vacuum chamber, a cathode and an anode in the chamber. A source of electrical power produces an arc or discharge between the cathode and anode. The arc is sufficient to vaporize a portion of the cathode to form a plasma. The plasma is directed to an extractor which separates the electrons from the plasma, and accelerates the ions to produce an ion beam.

  5. Ion beam generating apparatus

    DOE Patents [OSTI]

    Brown, I.G.; Galvin, J.

    1987-12-22T23:59:59.000Z

    An ion generating apparatus utilizing a vacuum chamber, a cathode and an anode in the chamber. A source of electrical power produces an arc or discharge between the cathode and anode. The arc is sufficient to vaporize a portion of the cathode to form a plasma. The plasma is directed to an extractor which separates the electrons from the plasma, and accelerates the ions to produce an ion beam. 10 figs.

  6. High power microwave generator

    DOE Patents [OSTI]

    Ekdahl, C.A.

    1983-12-29T23:59:59.000Z

    A microwave generator efficiently converts the energy of an intense relativistic electron beam (REB) into a high-power microwave emission using the Smith-Purcell effect which is related to Cerenkov radiation. Feedback for efficient beam bunching and high gain is obtained by placing a cylindrical Smith-Purcell transmission grating on the axis of a toroidal resonator. High efficiency results from the use of a thin cold annular highly-magnetized REB that is closely coupled to the resonant structure.

  7. Identification of organic-rich lower tertiary shakles as petroleum source rock, southern Louisiana

    SciTech Connect (OSTI)

    McDade, E.C. (Texaco Inc., New orleans, LA (United States)); Sassen, R. (Texas A M Univ., College Station, TX (United States)); Wenger, L. (Exxon Production Research, Houston, TX (United States)); Cole, G.A. (Saudi Aramco Laboratories Department, Dhahran (Saudi Arabia))

    1993-09-01T23:59:59.000Z

    Comprehensive organic geochemical evidence of organic-rich, marine shales in the lower part of the middle eocene Claiborne Group and the lower Eocene-Paleocene Wilcox Group of southern Louisiana is now available. The evidence influences models for Gulf Coast petroleum origin. The shales are the only post-Cretaceous sediments in the northern Gulf of Mexico that meet recognized criteria for oil source rocks. Many of organic-rich Paleogene shales contain terrestrially derived, amorphous kerogen altered by microbial activity, and display pyrolysis results consistent with type II/III kerogen. Shelf-edge depositional environments favored preservation of hydrogen-rich kerogen. Seismic and sedimentologic interpretations suggest that marine character and thickness increase on the Paleogene continental slope to the south. The shales at burial depths in the 3050-4600 m depth range, at present, are thermally immature to late mature with respect to oil generation. Detailed geochemical analyses of extractable organic matter and kerogen isolates suggest an oil-source correlation with Tertiary-reservoired oils in southern Louisiana and offshore in the adjacent Gulf of Mexico. Biomarkers of selected samples display high concentrations of C[sub 28]-bisnorhopane and 18[alpha]-oleanane biomarker is absent or not reported in Gulf crude oils from Cretaceous and Jurassic source rocks. Burial and thermal history models suggest the timing of oil migration from Paleogene source rocks is consistent with emplacement of oils in Tertiary reservoirs. The lower Tertiary source rocks described here could offer new insight to understanding the origin of oil in other Tertiary deltas.

  8. AEC Lowman Station - coal switching and magnesium-enhanced lime scrubbing to lower operating costs

    SciTech Connect (OSTI)

    Inkenhaus, W.; Babu, M.; Smith, K. [Dravo Lime Co., Pittsburgh, PA (United States); Loper, L. [Alabama Electric Coopreative, Leroy, AL (United States)

    1997-12-31T23:59:59.000Z

    AEC`s Lowman Station is located in Leroy, Alabama. There are three coal-fired boilers at this station. Unit 1 is capable of generating 85 MW without a flue gas desulfurization, FGD, system. Units 2 and 3, with a total of 516 MW output capacity, are equipped with FGD systems. The FGD plant was designed for wet limestone FGD with natural oxidation. Lowman Station burned low sulfur, 1.3 to 1.8% sulfur, coal. In January of 1996 AEC switched Units 2 and 3 from limestone to magnesium-enhanced lime FGD operation. It was determined that the plant could take advantage of the higher SO{sub 2} removal efficiency of the magnesium-enhanced lime system. Major benefits resulting from this conversion were AEC`s ability to switch to a lower cost high sulfur coal while meeting the stringent SO{sub 2} emission requirements. Power cost savings resulted from the lower liquid to gas ratio required by the magnesium-enhanced lime process. Three recirculation pumps per module were reduced to a single operating pump per module, lowering the scrubber pressure drop. Significant cost reduction in the operating costs of the ball mill was realized due to modifications made to slake lime instead of grinding limestone. Prior to switching, personnel from AEC and Dravo Lime Company ran a four week test on magnesium-enhanced lime to obtain scrubber performance data including SO{sub 2} removal efficiencies on the modules while burning a 1.8% sulfur coal. This paper discusses the plant modifications that were needed to make the switch, cost justifications due to coal switching, and AEC`s operating experiences to date. AEC and Dravo Lime Company working together as a team conducted detailed cost studies, followed by extensive field tests and implemented the plant modifications. This plant continues to operate burning higher sulfur coal with the magnesium-enhanced lime FGD system.

  9. Milliwatt Generator Project

    SciTech Connect (OSTI)

    Latimer, T.W.; Rinehart, G.H.

    1992-05-01T23:59:59.000Z

    This report covers progress on the Milliwatt Generator Project from April 1986 through March 1988. Activities included fuel processing and characterization, production of heat sources, fabrication of pressure-burst test units, compatibility studies, impact testing, and examination of surveillance units. The major task of the Los Alamos Milliwatt Generator Project is to fabricate MC2893A heat sources (4.0 W) for MC2730A radioisotope thermoelectric generators (RTGS) and MC3599 heat sources (4.5 W) for MC3500 RTGs. The MWG Project interfaces with the following contractors: Sandia National Laboratories, Albuquerque (designer); E.I. du Pont de Nemours and Co. (Inc.), Savannah River Plant (fuel); Monsanto Research Corporation, Mound Facility (metal hardware); and General Electric Company, Neutron Devices Department (RTGs). In addition to MWG fabrication activities, Los Alamos is involved in (1) fabrication of pressure-burst test units, (2) compatibility testing and evaluation, (3) examination of surveillance units, and (4) impact testing and subsequent examination of compatibility and surveillance units.

  10. Optical harmonic generator

    DOE Patents [OSTI]

    Summers, Mark A. (Livermore, CA); Eimerl, David (Pleasanton, CA); Boyd, Robert D. (Livermore, CA)

    1985-01-01T23:59:59.000Z

    A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The "extraordinary" or "e" directions of the crystal elements are oriented in the integral assembly to be in quadrature (90.degree.). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude "o" and "e" components. For a third-harmonic generation, the input fundamental wave has "o" and "e" components whose amplitudes are in a ratio of 2:1 ("o":"e" reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10.degree.. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axes ("o").

  11. Optical harmonic generator

    DOE Patents [OSTI]

    Summers, M.A.; Eimerl, D.; Boyd, R.D.

    1982-06-10T23:59:59.000Z

    A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The extraordinary or e directions of the crystal elements are oriented in the integral assembly to be in quadrature (90/sup 0/). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude o and e components. For a third-harmonic generation, the input fundamental wave has o and e components whose amplitudes are in a ratio of 2:1 (o:e reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10/sup 0/. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axeses (o).

  12. Generation of elves by sprites and jets

    SciTech Connect (OSTI)

    Taranenko, Y.; Roussel-Dupre, R.; Yukhimuk, V.; Symbalisty, E.

    1997-04-01T23:59:59.000Z

    Recent years of observations of the upper atmosphere and the lower ionosphere brought a fascinating collection of new phenomena including optical, radio, and gamma-ray emissions originating in the 20 to 90 km altitude range. Up to now, the most diverse phenomenology has emerged from the optical observations which have led to the identification of red sprites, blue jets, blue starts, and elves. Most of the studies have concentrated on relating such phenomena in the upper atmosphere to regular lightning discharges in the troposphere. The sprite/jet discharge itself can be caused by the runaway air breakdown, or regular air breakdown. The standard theory for optical airglow transients in the lower ionosphere above the thunderstorms also known as elves suggests that they are produced during interaction of electromagnetic pulses (EMP) from lightning with the lower ionosphere. Heating of the ambient electrons by the EMP in the D region can result in excitation of optical emissions once the optical excitation thresholds are reached. In this paper the authors suggest that in addition to this mechanism elves can be caused by an EMP generated by sprites and jets.

  13. Lower Flathead System Fisheries Study, 1984 Annual Report.

    SciTech Connect (OSTI)

    Darling, James E.; Pajak, Paul; Wunderlich, Mary P.

    1984-12-01T23:59:59.000Z

    This study was undertaken to assess the effects of Kerr Dam operations on the fisheries of the Lower Flathead System. Supported by Bonneville Power Administration funding, and conducted by the Confederated Salish and Kootenai Tribes, the study began in December of 1982 and is scheduled for completion in December of 1987. This report covers the 1983-84 field season and includes the status of target fish species populations in the Flathead River and tributaries, and initial work in South Bay of Flathead Lake. Additionally it addresses how Kerr operations may effect the reproduction of salmonids and northern pike. Combined trout population estimates for rainbow, brown, brook, and bull trout, averaged 13 fish/km of the lower Flathead River. The number of bull trout and cutthroat trout captured was so low that estimation of their individual populations was not possible. An interim closure to trout harvest on the lower Flathead River was recommended and approved by the Tribal Council until study results can be further analyzed and management options reviewed. Population estimates for northern pike ranged from six/kilometer in poorer habitat, to one hundred three/km in the best habitat in the main Flathead River. Seven pike were radio tagged and their movements monitored. Movements of over 89 km were recorded. One fish left the Flathead River and moved down the Clark Fork to the Plains area. Fish weirs were constructed on the Jocko River and Mission Creek to assess spawning runs of trout from the main river. Thirty-two adult rainbow passed the Jocko weir and twenty-eight passed the Mission weir during the spring spawning season. Twenty adult brown trout were captured at the Jocko weir and five at Mission weir in the fall. The Jocko weir suffered minor damage due to bed load movement during high flows of spring runoff. The structure of trout populations in the lower Flathead River points to spawning and recruitment problems caused by hydroelectric operations and sedimentation. Among the consequences of the present operational regime are constant, rapid changes in river discharge during spawning and Incubation seasons of trout species present in the lower river. Hamilton and Buell (1976) reported that similar fluctuation might exceed tolerance limits of adults and inhibit spawning behavior, dewater redds, strand fry, and displace juveniles to habitats less suitable for survival. Similar problems are felt to exist on the lower river. Constant fluctuations over backwater vegetation have been linked to major problems in successful northern pike spawning and recruitment by preventing access to spawning sites, and dewatering eggs and attached fry. Phase I of the South Bay investigation was completed this year resulting in a detailed study program for the next three years. Dominant habitat types were mapped, and physical habitat and biological monitoring methods were evaluated and selected. Permanent habitat transects, water quality stations, fish sampling, gillnetting, seining, and trapping sites were established.

  14. Face Recognition Algorithms Surpass Humans Matching Faces

    E-Print Network [OSTI]

    Abdi, Hervé

    over humans, in light of the absolute performance levels of the algorithms, underscores the need systems for security applications. How accurate must a face recognition algorithm be to contribute to these applications? Over the last decade, academic computer vision researchers and commercial product developers have

  15. Hard Thresholding Pursuit Algorithms: Number of Iterations

    E-Print Network [OSTI]

    Hitczenko, Pawel

    algorithms do provide alternative methods. We consider here the hard thresholding pursuit (HTP) algorithm [6 us now recall that (HTP) consists in constructing a sequence (xn) of s-sparse vectors, starting absolute entries of xn-1 + A (y - Axn-1 ),(HTP1) xn := argmin{ y - Az 2, supp(z) Sn },(HTP2) until

  16. On the Potential of Automatic Algorithm Configuration

    E-Print Network [OSTI]

    Hutter, Frank

    .g., neighborhood structure in local search or variable/value ordering heuristics in tree search), as well lead to enormous speed-ups of tree search algorithms for SAT for solving SAT-encoded software The problem of setting an algorithm's free parameters for maximal performance on a class of problem instances

  17. A Faster Primal Network Simplex Algorithm

    E-Print Network [OSTI]

    Aggarwal, Charu C.

    We present a faster implementation of the polynomial time primal simplex algorithm due to Orlin [23]. His algorithm requires O(nm min{log(nC), m log n}) pivots and O(n2 m ??n{log nC, m log n}) time. The bottleneck operations ...

  18. ASYNPLEX, an asynchronous parallel revised simplex algorithm

    E-Print Network [OSTI]

    Hall, Julian

    ASYNPLEX, an asynchronous parallel revised simplex algorithm J.A.J. Hall K.I.M. McKinnon February, an asynchronous parallel revised simplex algorithm J. A. J. Hall K. I. M. McKinnon 27th February 1998 Abstract This paper describes ASYNPLEX, an asynchronous variant of the revised simplex method which is suitable

  19. Ris-R-Report FATIGUE EVALUATION ALGORITHMS

    E-Print Network [OSTI]

    Algorithms: Review Division: Materials Research Division Published on the internet July 2010 Ris-R-1740(EN, WISPERX and NEW WISPER load sequences on a Glass/Epoxy multidirectional laminate typical of a wind turbine rotor blade construction. Two versions of the algorithm, the one using single-step and the other using

  20. Power Control Algorithms in Wireless Communications

    E-Print Network [OSTI]

    Power Control Algorithms in Wireless Communications Judd Rohwer , Chaouki T. Abdallah , Aly El-Osery 1 Abstract This paper presents a comprehensive review of the published algorithms on power control) and Time Division Multiple Access (TDMA). 2 Introduction Power control in cellular systems is applied

  1. Improvements of the local bosonic algorithm

    E-Print Network [OSTI]

    B. Jegerlehner

    1996-12-15T23:59:59.000Z

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

  2. Energy Aware Algorithmic Engineering Swapnoneel Roy

    E-Print Network [OSTI]

    Rudra,, Atri

    Energy Aware Algorithmic Engineering Swapnoneel Roy School of Computing University of North Florida: akshat.verma@in.ibm.com Abstract--In this work, we argue that energy management should be a guiding are simple and do not aid in design of energy-efficient algorithms. In this work, we conducted a large number

  3. Buffer assignment algorithms for data driven architectures

    E-Print Network [OSTI]

    Chatterjee, Mitrajit

    1994-01-01T23:59:59.000Z

    algorithms have been shown to be O(V x E) and O(V'xlogV) re spectively; an improvement over the existing strategies. A novel buffer distribution algorithm to maximize the pipelining and throughput has also been proposed. The number of buffers obtained...

  4. Communication and Computation in Distributed CSP Algorithms

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    Communication and Computation in Distributed CSP Algorithms C`esar Fern`andez1 , Ramon Bejar1 in the context of networked distributed systems. In order to study the performance of Distributed CSP (DisCSP consider two complete DisCSP algorithms: asynchronous backtracking (ABT) and asynchronous weak commitment

  5. Algorithms in grid classes Ruth Hoffmann

    E-Print Network [OSTI]

    St Andrews, University of

    signs c1, . . . , cs and row signs, r1, . . . , rt and let = {(k, ) : Mk, = 0}. The map : GridAlgorithms in grid classes Ruth Hoffmann University of St Andrews, School of Computer Science Permutation Patterns 2013 Universit´e Paris Diderot 2nd July 2013 Ruth Hoffmann Algorithms in grid classes 1

  6. A heuristic algorithm for graph isomorphism

    E-Print Network [OSTI]

    Torres Navarro, Luz

    1999-01-01T23:59:59.000Z

    polynomial time algorithm O(n?), ISO-MT, that seems' to solve the graph isomorphism decision problem correctly for all classes of graphs. Our algorithm is extremely useful from the practical point of view since counter examples (pairs of graphs for which our...

  7. Enhancing Smart Home Algorithms Using Temporal Relations

    E-Print Network [OSTI]

    Cook, Diane J.

    Enhancing Smart Home Algorithms Using Temporal Relations Vikramaditya R. JAKKULA1 and Diane J COOK School of Electrical Engineering and Computer Science Abstract. Smart homes offer a potential benefit improves the performance of these algorithms and thus enhances the ability of smart homes to monitor

  8. An improved spectral graph partitioning algorithm for mapping parallel computations

    SciTech Connect (OSTI)

    Hendrickson, B.; Leland, R.

    1992-09-01T23:59:59.000Z

    Efficient use of a distributed memory parallel computer requires that the computational load be balanced across processors in a way that minimizes interprocessor communication. We present a new domain mapping algorithm that extends recent work in which ideas from spectral graph theory have been applied to this problem. Our generalization of spectral graph bisection involves a novel use of multiple eigenvectors to allow for division of a computation into four or eight parts at each stage of a recursive decomposition. The resulting method is suitable for scientific computations like irregular finite elements or differences performed on hypercube or mesh architecture machines. Experimental results confirm that the new method provides better decompositions arrived at more economically and robustly than with previous spectral methods. We have also improved upon the known spectral lower bound for graph bisection.

  9. Lower hybrid heating and current drive on PLT

    SciTech Connect (OSTI)

    Stevens, J.E.; Bernabei, S.; Bitter, M.

    1983-03-01T23:59:59.000Z

    800 MHz lower hybrid waves have been launched into PLT with a six waveguide coupler. Recent improvements have allowed powers up to 400 kW to be launched with good coupling (R approx. 10 to 25%). Experiments at low density (anti n/sub e/ < 7 x 10/sup 12/ cm/sup -3/, i.e., ..omega../..omega../sub LH/ > 2) have demonstrated current drive and plasma heating. Experiments at higher densities have produced hot-ion tails, but so far have shown inefficient body heating. To date, only a limited parameters space has been investigated at high power.

  10. Nonlinear lower hybrid oscillations in a cold viscous plasma

    SciTech Connect (OSTI)

    Maity, Chandan; Chakrabarti, Nikhil [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)

    2011-12-15T23:59:59.000Z

    An analytical description of nonlinear lower hybrid oscillations in a cold quasi-neutral plasma in the presence of viscosity is presented in one spatial dimension by using Lagrangian variables. By treating viscosity coefficients of the electron and ion fluids as inversely proportional to their respective densities, an exact solution is obtained. It is found that the damping rate of such oscillations is directly proportional to the effective viscosity coefficients of electron and ion fluids. A possible implication of such solutions is briefly outlined.

  11. Comments of the Lower Colorado River Authority | Department of Energy

    Office of Environmental Management (EM)

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

  12. Lower Colorado River Authority LCRA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners andLodgepole,Lotsee,Energy InformationMichigan:Lower Colorado

  13. Savings Project: Lower Water Heating Temperature | Department of Energy

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

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

  14. Lower Cost, Nanoporous Block Copolymer Battery Separator - Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9November 6, 2014Innovation Portal Lower Cost,

  15. Lower 48 States Natural Gas Working Underground Storage (Billion Cubic

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5 Tables July 1996 Energy Information Administration Office of Coal,Cubic Feet)FuelDecade Year-0InputYear44Feet) Lower 48 States

  16. The Iron Spin Transition in the Earth's Lower Mantle

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in the Earth's Lower Mantle Print It is now known that

  17. The Iron Spin Transition in the Earth's Lower Mantle

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in the Earth's Lower Mantle Print It is now known

  18. The Iron Spin Transition in the Earth's Lower Mantle

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in the Earth's Lower Mantle Print It is now knownThe

  19. The Iron Spin Transition in the Earth's Lower Mantle

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in the Earth's Lower Mantle Print It is now knownTheThe

  20. The Iron Spin Transition in the Earth's Lower Mantle

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in the Earth's Lower Mantle Print It is now

  1. Vietnam-Lowering Emissions in Asia's Forests (LEAF) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmwelt ManagementVeraInformation LEAF[1] "Lowering

  2. Linguistic Alignment in Natural Language Generation

    E-Print Network [OSTI]

    Halberg, Gabrielle Manya

    2013-01-01T23:59:59.000Z

    that are instantiated at generation time. . . . . . . . .that are instantiated at generation time. . Illustration ofin Natural Language Generation by Gabrielle Halberg

  3. Renewable Energy: Distributed Generation Policies and Programs...

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

    Energy Policies & Programs Renewable Energy: Distributed Generation Policies and Programs Renewable Energy: Distributed Generation Policies and Programs Distributed generation...

  4. Advanced transfer chute reduces dust at lower cost

    SciTech Connect (OSTI)

    Blazek, C. [Benetech Inc. (United States)

    2005-10-01T23:59:59.000Z

    Dominion Resources' Kincaid Generating Station in Illinois is recognized as a leader in handling and burning PRB coal. Since being named the Powder Plant of the Year in 2001 and 2004 by the PRB Coal Users' Group, Kincaid has improved its coal handling by installing an InteliFlo controlled-flow transfer chute from Benetech. The InteliFlo design eliminates the need for skirt boards, conveyor discharge hoods, and complex load bed designs, and reduces O & M costs. 4 figs.

  5. Energy Department Announces $25 Million to Lower Cost of Concentrating

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsNovember 13,Statement | DepartmentBlog Energy BlogDeploymentNext GenerationSolar

  6. "Eztrack": A single-vehicle deterministic tracking algorithm

    SciTech Connect (OSTI)

    Carrano, C J

    2007-12-20T23:59:59.000Z

    A variety of surveillance operations require the ability to track vehicles over a long period of time using sequences of images taken from a camera mounted on an airborne or similar platform. In order to be able to see and track a vehicle for any length of time, either a persistent surveillance imager is needed that can image wide fields of view over a long time-span or a highly maneuverable smaller field-of-view imager is needed that can follow the vehicle of interest. The algorithm described here was designed for the persistence surveillance case. In turns out that most vehicle tracking algorithms described in the literature[1,2,3,4] are designed for higher frame rates (> 5 FPS) and relatively short ground sampling distances (GSD) and resolutions ({approx} few cm to a couple tens of cm). But for our datasets, we are restricted to lower resolutions and GSD's ({ge}0.5 m) and limited frame-rates ({le}2.0 Hz). As a consequence, we designed our own simple approach in IDL which is a deterministic, motion-guided object tracker. The object tracking relies both on object features and path dynamics. The algorithm certainly has room for future improvements, but we have found it to be a useful tool in evaluating effects of frame-rate, resolution/GSD, and spectral content (eg. grayscale vs. color imaging ). A block diagram of the tracking approach is given in Figure 1. We describe each of the blocks of the diagram in the upcoming sections.

  7. Distributed Generation with Heat Recovery and Storage

    SciTech Connect (OSTI)

    Siddiqui, Afzal; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

    2005-07-29T23:59:59.000Z

    Electricity generated by distributed energy resources (DER) located close to end-use loads has the potential to meet consumer requirements more efficiently than the existing centralized grid. Installation of DER allows consumers to circumvent the costs associated with transmission congestion and other non-energy costs of electricity delivery and potentially to take advantage of market opportunities to purchase energy when attractive. On-site thermal power generation is typically less efficient than central station generation, but by avoiding non-fuel costs of grid power and utilizing combined heat and power (CHP) applications, i.e., recovering heat from small-scale on-site generation to displace fuel purchases, then DER can become attractive to a strictly cost-minimizing consumer. In previous efforts, the decisions facing typical commercial consumers have been addressed using a mixed-integer linear programme, the DER Customer Adoption Model(DER-CAM). Given the site s energy loads, utility tariff structure, and information (both technical and financial) on candidate DER technologies, DER-CAM minimizes the overall energy cost for a test year by selecting the units to install and determining their hourly operating schedules. In this paper, the capabilities of DER-CAM are enhanced by the inclusion of the option to store recovered low-grade heat. By being able to keep an inventory of heat for use in subsequent periods, sites are able to lower costs even further by reducing off-peak generation and relying on storage. This and other effects of storages are demonstrated by analysis of five typical commercial buildings in San Francisco, California, and an estimate of the cost per unit capacity of heat storage is calculated.

  8. Lower-Temperature Subsurface Layout and Ventilation Concepts

    SciTech Connect (OSTI)

    Christine L. Linden; Edward G. Thomas

    2001-06-20T23:59:59.000Z

    This analysis combines work scope identified as subsurface facility (SSF) low temperature (LT) Facilities System and SSF LT Ventilation System in the Technical Work Plan for Subsurface Design Section FY 01 Work Activities (CRWMS M&O 2001b, pp. 6 and 7, and pp. 13 and 14). In accordance with this technical work plan (TWP), this analysis is performed using AP-3.10Q, Analyses and Models. It also incorporates the procedure AP-SI.1Q, Software Management. The purpose of this analysis is to develop an overall subsurface layout system and the overall ventilation system concepts that address a lower-temperature operating mode for the Monitored Geologic Repository (MGR). The objective of this analysis is to provide a technical design product that supports the lower-temperature operating mode concept for the revision of the system description documents and to provide a basis for the system description document design descriptions. The overall subsurface layout analysis develops and describes the overall subsurface layout, including performance confirmation facilities (also referred to as Test and Evaluation Facilities) for the Site Recommendation design. This analysis also incorporates current program directives for thermal management.

  9. Computer generated holographic microtags

    DOE Patents [OSTI]

    Sweatt, W.C.

    1998-03-17T23:59:59.000Z

    A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers is disclosed. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them. 5 figs.

  10. Spin Seebeck power generators

    SciTech Connect (OSTI)

    Cahaya, Adam B.; Tretiakov, O. A. [Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan); Bauer, Gerrit E. W. [Institute for Materials Research and WPI-AIMR, Tohoku University, Sendai 980-8577 (Japan); Kavli Institute of NanoScience, TU Delft Lorentzweg 1, 2628 CJ Delft (Netherlands)

    2014-01-27T23:59:59.000Z

    We derive expressions for the efficiency and figure of merit of two spin caloritronic devices based on the spin Seebeck effect (SSE), i.e., the generation of spin currents by a temperature gradient. The inverse spin Hall effect is conventionally used to detect the SSE and offers advantages for large area applications. We also propose a device that converts spin current into electric one by means of a spin-valve detector, which scales favorably to small sizes and approaches a figure of merit of 0.5 at room temperature.

  11. Highly stable aerosol generator

    DOE Patents [OSTI]

    DeFord, H.S.; Clark, M.L.

    1981-11-03T23:59:59.000Z

    An improved compressed air nebulizer has been developed such that a uniform aerosol particle size and concentration may be produced over long time periods. This result is achieved by applying a vacuum pressure to the makeup assembly and by use of a vent tube between the atmosphere and the makeup solution. By applying appropriate vacuum pressures to the makeup solution container and by proper positioning of the vent tube, a constant level of aspirating solution may be maintained within the aspirating assembly with aspirating solution continuously replaced from the makeup solution supply. This device may also be adapted to have a plurality of aerosol generators and only one central makeup assembly. 2 figs.

  12. Hermetic turbine generator

    DOE Patents [OSTI]

    Meacher, John S. (Ballston Lake, NY); Ruscitto, David E. (Ballston Spa, NY)

    1982-01-01T23:59:59.000Z

    A Rankine cycle turbine drives an electric generator and a feed pump, all on a single shaft, and all enclosed within a hermetically sealed case. The shaft is vertically oriented with the turbine exhaust directed downward and the shaft is supported on hydrodynamic fluid film bearings using the process fluid as lubricant and coolant. The selection of process fluid, type of turbine, operating speed, system power rating, and cycle state points are uniquely coordinated to achieve high turbine efficiency at the temperature levels imposed by the recovery of waste heat from the more prevalent industrial processes.

  13. Energy Generation by State and Technology (2009) - Energy Generation...

    Open Energy Info (EERE)

    Energy Generation by Fuel ... Download Energy Generation by Fuel Source and State, 2009 URL: http:en.openei.orgdatasetsdataset03f65dc9-ddc9-41ce-806f-edafad486a1fresource...

  14. A Comparison Between Data Mining Prediction Algorithms for Fault Detection(Case study: Ahanpishegan co.)

    E-Print Network [OSTI]

    Amooee, Golriz; Bagheri-Dehnavi, Malihe

    2012-01-01T23:59:59.000Z

    In the current competitive world, industrial companies seek to manufacture products of higher quality which can be achieved by increasing reliability, maintainability and thus the availability of products. On the other hand, improvement in products lifecycle is necessary for achieving high reliability. Typically, maintenance activities are aimed to reduce failures of industrial machinery and minimize the consequences of such failures. So the industrial companies try to improve their efficiency by using different fault detection techniques. One strategy is to process and analyze previous generated data to predict future failures. The purpose of this paper is to detect wasted parts using different data mining algorithms and compare the accuracy of these algorithms. A combination of thermal and physical characteristics has been used and the algorithms were implemented on Ahanpishegan's current data to estimate the availability of its produced parts. Keywords: Data Mining, Fault Detection, Availability, Predictio...

  15. Measurement of Flow Phenomena in a Lower Plenum Model of a Prismatic Gas-Cooled Reactor

    SciTech Connect (OSTI)

    Hugh M. McIlroy, Jr.; Doanld M. McEligot; Robert J. Pink

    2010-02-01T23:59:59.000Z

    Mean-velocity-field and turbulence data are presented that measure turbulent flow phenomena in an approximately 1:7 scale model of a region of the lower plenum of a typical prismatic gas-cooled reactor (GCR) similar to a General Atomics Gas-Turbine-Modular Helium Reactor (GTMHR) design. The data were obtained in the Matched-Index-of-Refraction (MIR) facility at Idaho National Laboratory (INL) and are offered for assessing computational fluid dynamics (CFD) software. This experiment has been selected as the first Standard Problem endorsed by the Generation IV International Forum. Results concentrate on the region of the lower plenum near its far reflector wall (away from the outlet duct). The flow in the lower plenum consists of multiple jets injected into a confined cross flow - with obstructions. The model consists of a row of full circular posts along its centerline with half-posts on the two parallel walls to approximate geometry scaled to that expected from the staggered parallel rows of posts in the reactor design. The model is fabricated from clear, fused quartz to match the refractive-index of the working fluid so that optical techniques may be employed for the measurements. The benefit of the MIR technique is that it permits optical measurements to determine flow characteristics in complex passages in and around objects to be obtained without locating intrusive transducers that will disturb the flow field and without distortion of the optical paths. An advantage of the INL system is its large size, leading to improved spatial and temporal resolution compared to similar facilities at smaller scales. A three-dimensional (3-D) Particle Image Velocimetry (PIV) system was used to collect the data. Inlet jet Reynolds numbers (based on the jet diameter and the time-mean bulk velocity) are approximately 4,300 and 12,400. Uncertainty analyses and a discussion of the standard problem are included. The measurements reveal developing, non-uniform, turbulent flow in the inlet jets and complicated flow patterns in the model lower plenum. Data include three-dimensional vector plots, data displays along the coordinate planes (slices) and presentations that describe the component flows at specific regions in the model. Information on inlet conditions is also presented.

  16. Development of an Eight Channel Waveform Generator for Beam-forming Applications

    E-Print Network [OSTI]

    Ledford, John Paul

    2008-01-01T23:59:59.000Z

    Setting - Middle ........ 92 7.7.8 0x37 ? Internal PRF Generator Setting - Lower......... 93 7.7.9 0x38 ? Internal EPRI Generator Setting - Upper........ 93 7.7.10 0x39 ? Internal EPRI Generator Setting - Lower........ 93 7.7.11 0x3A ? IO Update Time... debug and expansion ports. There is a local oscillator for house-keeping functions, and status LEDs. Page 24 FPGA PRF Trigger EPRI Reset Sample Clock 100 MHz Local Oscillator Voltage Regulation and Monitoring Serial Port RS-232 Daughterboard...

  17. Advanced algorithms for information science

    SciTech Connect (OSTI)

    Argo, P.; Brislawn, C.; Fitzgerald, T.J.; Kelley, B.; Kim, W.H.; Mazieres, B.; Roeder, H.; Strottman, D.

    1998-12-31T23:59:59.000Z

    This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). In a modern information-controlled society the importance of fast computational algorithms facilitating data compression and image analysis cannot be overemphasized. Feature extraction and pattern recognition are key to many LANL projects and the same types of dimensionality reduction and compression used in source coding are also applicable to image understanding. The authors have begun developing wavelet coding which decomposes data into different length-scale and frequency bands. New transform-based source-coding techniques offer potential for achieving better, combined source-channel coding performance by using joint-optimization techniques. They initiated work on a system that compresses the video stream in real time, and which also takes the additional step of analyzing the video stream concurrently. By using object-based compression schemes (where an object is an identifiable feature of the video signal, repeatable in time or space), they believe that the analysis is directly related to the efficiency of the compression.

  18. Numerical estimation on free electrons generated by shielded radioactive materials under various gaseous environments

    SciTech Connect (OSTI)

    Kim, D. S. [Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of); Lee, W. S.; So, J. H. [Agency for Defence Development (ADD), Daejeon 305-152 (Korea, Republic of); Choi, E. M. [Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of); School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of)

    2013-06-15T23:59:59.000Z

    We report simulation results on generation of free electrons due to the presence of radioactive materials under controlled pressure and gases using a general Monte Carlo transport code (MCNPX). A radioactive material decays to lower atomic number, simultaneously producing high energy gamma rays that can generate free electrons via various scattering mechanisms. This paper shows detailed simulation works for answering how many free electrons can be generated under the existence of shielded radioactive materials as a function of pressure and types of gases.

  19. Task 3.14 - Demonstration of Technologies for Remote Power Generation in Alaska

    SciTech Connect (OSTI)

    Michael L. Jones

    1998-02-01T23:59:59.000Z

    In over 165 villages in Alaska, the use of fossil fuel supplies or renewable energy resources could greatly reduce the cost of electricity and space heating. Currently, diesel generators are the most commonly used electrical generating systems; however, high fuel costs result in extremely high electrical power costs reIative to the lower 48 states. The reduction of fuel costs associated with the use of indigenous, locally available fuels running modular, high-efficiency power- generating systems would be extremely beneficial.

  20. Effect of lower feedstock prices on economics of MTBE complex

    SciTech Connect (OSTI)

    Rahman, F.; Hamid, S.H.; Ali, M.A. [King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia)

    1996-01-01T23:59:59.000Z

    Economic evaluation of the methyl tertiary butyl ether (MTBE) complex was carried out starting from n-butane and by captive production of methanol from natural gas. The processing steps consist of isomerization of n-butane to isobutane, dehydrogenation of isobutane to make isobutene, and finally, the reaction of isobutene with methanol to produce MTBE. Two different plant sizes were considered, and the effect of 30% lower feedback prices on profitability was studied. It was found that the raw materials cost is a dominant component, composing about 55% of the total production cost. An internal rate of return of 19% could be realized for 500,000 tons per annum MTBE complex based on economic data in mid-1993. The payback period estimated at this capacity was 3.8 years, and the break-even capacity was 36.6%.

  1. Separation and concentration of lower alcohols from dilute aqueous solutions

    DOE Patents [OSTI]

    Moore, Raymond H. (Richland, WA); Eakin, David E. (Kennewick, WA); Baker, Eddie G. (Richland, WA); Hallen, Richard T. (Richland, WA)

    1991-01-01T23:59:59.000Z

    A process for producing, from a dilute aqueous solution of a lower (C.sub.1 -C.sub.5) alcohol, a concentrated liquid solution of the alcohol in an aromatic organic solvent is disclosed. Most of the water is removed from the dilute aqueous solution of alcohol by chilling sufficiently to form ice crystals. Simultaneously, the remaining liquid is extracted at substantially the same low temperature with a liquid organic solvent that is substantially immiscible in aqueous liquids and has an affinity for the alcohol at that temperature, causing the alcohol to transfer to the organic phase. After separating the organic liquid from the ice crystals, the organic liquid can be distilled to enrich the concentration of alcohol therein. Ethanol so separated from water and concentrated in an organic solvent such as toluene is useful as an anti-knock additive for gasoline.

  2. Pathway to a lower cost high repetition rate ignition facility

    SciTech Connect (OSTI)

    Obenschain, S.P.; Colombant, D.G.; Schmitt, A.J.; Sethian, J.D.; McGeoch, M. W. [Plasma Physics Division, U.S. Naval Research Laboratory, Washington, D.C. 20375 (United States); Plex LLC, Brookline, Massachusetts 02446-5478 (United States)

    2006-05-15T23:59:59.000Z

    An approach to a high-repetition ignition facility based on direct drive with the krypton-fluoride laser is presented. The objective is development of a 'Fusion Test Facility' that has sufficient fusion power to be useful as a development test bed for power plant materials and components. Calculations with modern pellet designs indicate that laser energies well below a megajoule may be sufficient. A smaller driver would result in an overall smaller, less complex and lower cost facility. While this facility might appear to have most direct utility to inertial fusion energy, the high flux of neutrons would also be able to address important issues concerning materials and components for other approaches to fusion energy. The physics and technological basis for the Fusion Test Facility are presented along with a discussion of its applications.

  3. Introduction Group Sequencing The Best-Case Completion Time Lower Bounds Experiments Conclusion Best-Case Lower Bounds in a Group Sequence for

    E-Print Network [OSTI]

    Recanati, Catherine

    Introduction Group Sequencing The Best-Case Completion Time Lower Bounds Experiments Conclusion Best-Case Lower Bounds in a Group Sequence for the Job Shop Problem Guillaume Pinot Nasser Mebarki Pinot, Nasser Mebarki Best-Case Lower Bounds in a Group Sequence 1/24 #12;Introduction Group Sequencing

  4. A new loop-reducing routing algorithm

    E-Print Network [OSTI]

    Park, Sung-Woo

    1989-01-01T23:59:59.000Z

    Coming-up VI. Three Links Failed Page 51 51 52 52 53 53 . 54 54 55 Figure 5. 6. 7. 8. LIST OF FIGURES Bellman-Ford Algorithm Update Tables of Distributed Bellman-Ford Algorithm Two Types of a. Loop Two-Node Loop Multi-Node Loop... distances for all pairs of nodes in the subnet, and distributes updated routing information to all the nodes. The centralized algorithm, however, is vulnerable to a. single node failure ? if the NRC fails, all nodes in the network must stop their rout...

  5. System engineering approach to GPM retrieval algorithms

    SciTech Connect (OSTI)

    Rose, C. R. (Chris R.); Chandrasekar, V.

    2004-01-01T23:59:59.000Z

    System engineering principles and methods are very useful in large-scale complex systems for developing the engineering requirements from end-user needs. Integrating research into system engineering is a challenging task. The proposed Global Precipitation Mission (GPM) satellite will use a dual-wavelength precipitation radar to measure and map global precipitation with unprecedented accuracy, resolution and areal coverage. The satellite vehicle, precipitation radars, retrieval algorithms, and ground validation (GV) functions are all critical subsystems of the overall GPM system and each contributes to the success of the mission. Errors in the radar measurements and models can adversely affect the retrieved output values. Ground validation (GV) systems are intended to provide timely feedback to the satellite and retrieval algorithms based on measured data. These GV sites will consist of radars and DSD measurement systems and also have intrinsic constraints. One of the retrieval algorithms being studied for use with GPM is the dual-wavelength DSD algorithm that does not use the surface reference technique (SRT). The underlying microphysics of precipitation structures and drop-size distributions (DSDs) dictate the types of models and retrieval algorithms that can be used to estimate precipitation. Many types of dual-wavelength algorithms have been studied. Meneghini (2002) analyzed the performance of single-pass dual-wavelength surface-reference-technique (SRT) based algorithms. Mardiana (2003) demonstrated that a dual-wavelength retrieval algorithm could be successfully used without the use of the SRT. It uses an iterative approach based on measured reflectivities at both wavelengths and complex microphysical models to estimate both No and Do at each range bin. More recently, Liao (2004) proposed a solution to the Do ambiguity problem in rain within the dual-wavelength algorithm and showed a possible melting layer model based on stratified spheres. With the No and Do calculated at each bin, the rain rate can then be calculated based on a suitable rain-rate model. This paper develops a system engineering interface to the retrieval algorithms while remaining cognizant of system engineering issues so that it can be used to bridge the divide between algorithm physics an d overall mission requirements. Additionally, in line with the systems approach, a methodology is developed such that the measurement requirements pass through the retrieval model and other subsystems and manifest themselves as measurement and other system constraints. A systems model has been developed for the retrieval algorithm that can be evaluated through system-analysis tools such as MATLAB/Simulink.

  6. Efficient Algorithms for Computing Betti Numbers of Semi-algebraic ...

    E-Print Network [OSTI]

    Saugata Basu

    Definition of Roadmaps. Properties of pseudo-critical values. Roadmap Algorithm for a bounded algebraic set. Saugata Basu. Efficient Algorithms for Computing...

  7. An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts

    E-Print Network [OSTI]

    Doug Altner

    2008-03-20T23:59:59.000Z

    Mar 20, 2008 ... In this paper, we present an efficient algorithm for computing minimum capacity s-t cuts under a polyhedral model of robustness. Our algorithm...

  8. algorithm population sizing: Topics by E-print Network

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

    CiteSeer Summary: Deciding the appropriate population size and number of islands for distributed island-model genetic algorithms is often critical to the algorithms success. This...

  9. adaptive control algorithm: Topics by E-print Network

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

    24 25 Next Page Last Page Topic Index 1 ON AN ADAPTIVE CONTROL ALGORITHM FOR ADAPTIVE OPTICS APPLICATIONS Mathematics Websites Summary: ON AN ADAPTIVE CONTROL ALGORITHM FOR...

  10. advanced methods algorithms: Topics by E-print Network

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

    CS 3172, 0203: Advanced Algorithms, Part I Jrgen Dix 12;Chapter 1: Turing Zachmann, Gabriel 9 Advanced Algorithms Course. Lecture Notes. Part 9 Computer Technologies...

  11. advanced fitting algorithms: Topics by E-print Network

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

    CS 3172, 0203: Advanced Algorithms, Part I Jrgen Dix 12;Chapter 1: Turing Zachmann, Gabriel 15 Advanced Algorithms Course. Lecture Notes. Part 9 Computer Technologies...

  12. New Algorithm Enables Fast Simulations of Ultrafast Processes

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

    reduces the computational cost and increases the speed of the simulations. Comparing the new algorithm with the old, slower algorithm yields similar results, e.g., the predicted...

  13. A new Search via Probability Algorithm for solving Engineering ...

    E-Print Network [OSTI]

    Admin

    2012-08-08T23:59:59.000Z

    Without loss of generality, we design an algorithm to solve the problem (I), the .... Statistics of 30 times by running ESVP algorithm for Three-Bar Truss Design.

  14. annealing genetic algorithm: Topics by E-print Network

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

    25 Next Page Last Page Topic Index 1 Annealing a Genetic Algorithm for Constrained Optimization1 Mathematics Websites Summary: Annealing a Genetic Algorithm for Constrained...

  15. alternative learning algorithms: Topics by E-print Network

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

    (or projection) algorithm has been successful in the context of solving optimization problems over two variables. The iterative nature and simplicity of the algorithm...

  16. Energy Generation Project Permitting (Vermont)

    Broader source: Energy.gov [DOE]

    The Vermont Energy Generation Siting Policy Commission is mandated to survey best practices for siting approval of electric generation projects (all facilities except for net- and group-net-metered...

  17. Biofuels: Microbially Generated Methane and

    E-Print Network [OSTI]

    Wood, Thomas K.

    Biofuels: Microbially Generated Methane and Hydrogen Michael J McAnulty, Pennsylvania State, Thomas K; and Ferry, James G (March 2013) Biofuels: Microbially Generated Methane and Hydrogen. In: e

  18. Transition-fault test generation

    E-Print Network [OSTI]

    Cobb, Bradley Douglas

    2013-02-22T23:59:59.000Z

    . One way to detect these timing defects is to apply test patterns to the integrated circuit that are generated using the transition-fault model. Unfortunately, industry's current transition-fault test generation schemes produce test sets that are too...

  19. Steam generator tube rupture study

    E-Print Network [OSTI]

    Free, Scott Thomas

    1986-01-01T23:59:59.000Z

    This report describes our investigation of steam generator behavior during a postulated tube rupture accident. Our study was performed using the steam generator, thermal-hydraulic analysis code THERMIT-UTSG. The purpose ...

  20. Self-assembling software generator

    DOE Patents [OSTI]

    Bouchard, Ann M. (Albuquerque, NM); Osbourn, Gordon C. (Albuquerque, NM)

    2011-11-25T23:59:59.000Z

    A technique to generate an executable task includes inspecting a task specification data structure to determine what software entities are to be generated to create the executable task, inspecting the task specification data structure to determine how the software entities will be linked after generating the software entities, inspecting the task specification data structure to determine logic to be executed by the software entities, and generating the software entities to create the executable task.

  1. Thermoacoustic generation in anisotropic media

    E-Print Network [OSTI]

    Hildebrand, John A

    1986-01-01T23:59:59.000Z

    John Hildebrand: A. Thermoacoustic generation anisotropicsubstantial variation thermoacoustic in gen- erationisstress-strain relationfor thermoacoustic genera- tion and,if

  2. The generation of hexahedral meshes for assembly geometries: A survey

    SciTech Connect (OSTI)

    TAUTGES,TIMOTHY J.

    2000-02-14T23:59:59.000Z

    The finite element method is being used today to model component assemblies in a wide variety of application areas, including structural mechanics, fluid simulations, and others. Generating hexahedral meshes for these assemblies usually requires the use of geometry decomposition, with different meshing algorithms applied to different regions. While the primary motivation for this approach remains the lack of an automatic, reliable all-hexahedral meshing algorithm, requirements in mesh quality and mesh configuration for typical analyses are also factors. For these reasons, this approach is also sometimes required when producing other types of unstructured meshes. This paper will review progress to date in automating many parts of the hex meshing process, which has halved the time to produce all-hex meshes for large assemblies. Particular issues which have been exposed due to this progress will also be discussed, along with their applicability to the general unstructured meshing problem.

  3. Continuous Control Primitive Trajectory Generation and Optimal Motion Splines for All-Wheel Steering Mobile

    E-Print Network [OSTI]

    Kelly, Alonzo

    algorithms based on the Ackermann, differential drive, or omnidirectional steering models. Ackerman with all-wheel steering capability differ from these models in that the velocity vector can be aimed in anyContinuous Control Primitive Trajectory Generation and Optimal Motion Splines for All

  4. Switching Mode Generation and Optimal Estimation with Application to Skid-Steering

    E-Print Network [OSTI]

    Hartmann, Mitra J. Z.

    to treat the skid-steered vehicle as a switched system, the vehicle's ground interaction is modeled using; optimal estimation; optimal control; estimation algorithms 1 Introduction The skid-steered vehicle (SSVSwitching Mode Generation and Optimal Estimation with Application to Skid-Steering T. M. Caldwell

  5. IMPROVING INTELLIGIBILITY IN NOISE OF HMM-GENERATED SPEECH VIA NOISE-DEPENDENT AND -INDEPENDENT METHODS

    E-Print Network [OSTI]

    Edinburgh, University of

    the intelligibility of HMM-generated Text-to- Speech (TTS) in noise, this work evaluates several speech enhance- ment in noise. Accordingly, there is great interest in speech in- telligibility enhancement algorithms for both] and the insertion of small pauses [14]. Statistical approaches to speech enhancement using recordings of speech

  6. THREE-DIMENSIONAL LONGWAVE INFRARED (LWIR) SYNTHETIC IMAGE GENERATION INCORPORATING ANGULAR EMJSSWITY EFFECTS USING RAY-

    E-Print Network [OSTI]

    Salvaggio, Carl

    . These routines require a sequence of images to evaluate tracking algorithms. The evaluation of sensor performanceTHREE-DIMENSIONAL LONGWAVE INFRARED (LWIR) SYNTHETIC IMAGE GENERATION INCORPORATING ANGULAR Memorial Drive Rochester, New York 14623-0887 ABSTRAO A technique for longwave infrared (LWIR) synthetic

  7. Generating Strategies for Multi-Agent Pursuit-Evasion Games in Partially Observable Euclidean Space

    E-Print Network [OSTI]

    Nau, Dana S.

    Smart Information Flow Technologies Minneapolis, MN 55401 USA ukuter@sift.net Dana Nau University that were only applicable to simple grid- world domains. We show experimentally that our algorithm is tol-evasion, multi-agent planning, game theory 1. INTRODUCTION Our work introduces a strategy generation technique

  8. GENERATING EQUIVALENCE RELATIONS BY HOMEOMORPHISMS

    E-Print Network [OSTI]

    Clemens, John D.

    GENERATING EQUIVALENCE RELATIONS BY HOMEOMORPHISMS JOHN D. CLEMENS Abstract. We give a construction of a single homeomorphism of 2N which generates the equivalence relation E0. We then consider ways of generating this equivalence relation using homeomorphisms with nicer structural properties, and show

  9. Generation of strongly chaotic beats

    E-Print Network [OSTI]

    I. Sliwa; P. Szlachetka; K. Grygiel

    2007-04-25T23:59:59.000Z

    The letter proposes a procedure for generation of strongly chaotic beats that have been hardly obtainable hitherto. The beats are generated in a nonlinear optical system governing second-harmonic generation of light. The proposition is based on the concept of an optical coupler but can be easily adopted to other nonlinear systems and Chua's circuits.

  10. Electricity Generation by Rhodopseudomonas palustris

    E-Print Network [OSTI]

    ,6). Shewanella oneidensis MR-1 and Geobacter sulfurreducens PCA are two DMRB capable of electricity generationElectricity Generation by Rhodopseudomonas palustris DX-1 D E F E N G X I N G , , Y I Z U O manuscript received March 20, 2008. Accepted March 25, 2008. Bacteria able to generate electricity

  11. ransmission, rather than generation, is

    E-Print Network [OSTI]

    to expand transmission capacity adequately: Over 40 years, the amount of electricity generated in the United's power plants to its customers. It was never designed for getting power from any generator to anyT ransmission, rather than generation, is generally the con- straint preventing cus- tomers from

  12. Generational Policy Laurence J. Kotlikoff

    E-Print Network [OSTI]

    Spence, Harlan Ernest

    Generational Policy by Laurence J. Kotlikoff Boston University The National Bureau of Economic;1 Abstract Generational policy is a fundamental aspect of a nation's fiscal affairs. The policy involves generational policy works, how it's measured, and how much it matters to virtual as well as real economies

  13. Second Harmonic Generation From Surfaces

    E-Print Network [OSTI]

    Botti, Silvana

    Second Harmonic Generation From Surfaces Nicolas Tancogne-Dejean, Valérie Véniard Condensed Matter/DSM European Theoretical Spectroscopy Facility #12;2 Outline Nonlinear optic and second harmonic generation;4 Second harmonic generation First nonlinear term Centrosymmetric material : (2) = 0 (3)First nonlinear

  14. Tailpulse signal generator

    DOE Patents [OSTI]

    Baker, John (Walnut Creek, CA); Archer, Daniel E. (Knoxville, TN); Luke, Stanley John (Pleasanton, CA); Decman, Daniel J. (Livermore, CA); White, Gregory K. (Livermore, CA)

    2009-06-23T23:59:59.000Z

    A tailpulse signal generating/simulating apparatus, system, and method designed to produce electronic pulses which simulate tailpulses produced by a gamma radiation detector, including the pileup effect caused by the characteristic exponential decay of the detector pulses, and the random Poisson distribution pulse timing for radioactive materials. A digital signal process (DSP) is programmed and configured to produce digital values corresponding to pseudo-randomly selected pulse amplitudes and pseudo-randomly selected Poisson timing intervals of the tailpulses. Pulse amplitude values are exponentially decayed while outputting the digital value to a digital to analog converter (DAC). And pulse amplitudes of new pulses are added to decaying pulses to simulate the pileup effect for enhanced realism in the simulation.

  15. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, J.D.; El-Genk, M.S.

    1998-05-05T23:59:59.000Z

    An apparatus and method for producing electricity from heat is disclosed. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device. 4 figs.

  16. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, John D. (Eaton's Neck, NY); El-Genk, Mohamed S. (Albuquerque, NM)

    1998-01-01T23:59:59.000Z

    An apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

  17. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, J.D.; El-Genk, M.S.

    1996-01-01T23:59:59.000Z

    An apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

  18. Stratified vapor generator

    DOE Patents [OSTI]

    Bharathan, Desikan (Lakewood, CO); Hassani, Vahab (Golden, CO)

    2008-05-20T23:59:59.000Z

    A stratified vapor generator (110) comprises a first heating section (H.sub.1) and a second heating section (H.sub.2). The first and second heating sections (H.sub.1, H.sub.2) are arranged so that the inlet of the second heating section (H.sub.2) is operatively associated with the outlet of the first heating section (H.sub.1). A moisture separator (126) having a vapor outlet (164) and a liquid outlet (144) is operatively associated with the outlet (124) of the second heating section (H.sub.2). A cooling section (C.sub.1) is operatively associated with the liquid outlet (144) of the moisture separator (126) and includes an outlet that is operatively associated with the inlet of the second heating section (H.sub.2).

  19. MHD Generation Code

    E-Print Network [OSTI]

    Frutos-Alfaro, Francisco

    2015-01-01T23:59:59.000Z

    A program to generate codes in Fortran and C of the full Magnetohydrodynamic equations is shown. The program used the free computer algebra system software REDUCE. This software has a package called EXCALC, which is an exterior calculus program. The advantage of this program is that it can be modified to include another complex metric or spacetime. The output of this program is modified by means of a LINUX script which creates a new REDUCE program to manipulate the MHD equations to obtain a code that can be used as a seed for a MHD code for numerical applications. As an example, we present part of output of our programs for Cartesian coordinates and how to do the discretization.

  20. Fourth Generation Parity

    SciTech Connect (OSTI)

    Lee, Hye-Sung [William and Mary College, BNL, JLAB; Soni, Amarjit [William and Mary College

    2013-01-01T23:59:59.000Z

    We present a very simple 4th-generation (4G) model with an Abelian gauge interaction under which only the 4G fermions have nonzero charge. The U(1) gauge symmetry can have a Z_2 residual discrete symmetry (4G-parity), which can stabilize the lightest 4G particle (L4P). When the 4G neutrino is the L4P, it would be a neutral and stable particle and the other 4G fermions would decay into the L4P leaving the trace of missing energy plus the standard model fermions. Because of the new symmetry, the 4G particle creation and decay modes are different from those of the sequential 4G model, and the 4G particles can be appreciably lighter than typical experimental bounds.

  1. AN ALGORITHM TO SUPPORT CODE-SKELETON GENERATION FOR CONCURRENT SYSTEMS*

    E-Print Network [OSTI]

    Berry, Daniel M.

    software. UCLA's SARA (System ARchitects Apprentice) is a design environment which provides computer aid System SARA (System ARchitects' Apprentice)[4, 5, 6] is a computer-aided system which supports

  2. STO-MP-IST-111 2 -1 Automatic Extraction of Domain Name Generation Algorithms from

    E-Print Network [OSTI]

    Behnke, Sven

    for attacking whole countries with DDoS attacks. In the ongoing arms race between law enforcement agencies's feasibility is shown in two case studies on current malware that uses domain fluxing. 1.0 INRODUCTION Using by several Distributed Denial of Service (DDoS) attacks performed by botnets. #12;Automatic Extraction

  3. THE FLAMMABILITY ANALYSIS AND TIME TO REACH LOWER FLAMMABILITY LIMIT CALCULATIONS ON THE WASTE EVAPORATION AT 242-A EVAPORATOR

    SciTech Connect (OSTI)

    HU TA

    2007-10-31T23:59:59.000Z

    This document describes the analysis of the waste evaporation process on the flammability behavior. The evaluation calculates the gas generation rate, time to reach 25% and 100% of the lower flammability limit (LFL), and minimum ventilation rates for the 242-A Evaporator facility during the normal evaporation process and when vacuum is lost. This analysis performs flammability calculations on the waste currently within all 28 double-shell tanks (DST) under various evaporation process conditions to provide a wide spectrum of possible flammable gas behavior. The results of this analysis are used to support flammable gas control decisions and support and upgrade to Documented Safety Analysis for the 242-A Evaporator.

  4. SPEEDING UP DYNAMIC SHORTEST PATH ALGORITHMS Finding ...

    E-Print Network [OSTI]

    2003-09-19T23:59:59.000Z

    Sep 19, 2003 ... ... and Reps algorithm for updating a shortest path tree, which is a revision of ... tree, although it can be easily specialized for updating a tree [5].

  5. Quantum Robot: Structure, Algorithms and Applications

    E-Print Network [OSTI]

    Dao-Yi Dong; Chun-Lin Chen; Chen-Bin Zhang; Zong-Hai Chen

    2005-06-18T23:59:59.000Z

    A kind of brand-new robot, quantum robot, is proposed through fusing quantum theory with robot technology. Quantum robot is essentially a complex quantum system and it is generally composed of three fundamental parts: MQCU (multi quantum computing units), quantum controller/actuator, and information acquisition units. Corresponding to the system structure, several learning control algorithms including quantum searching algorithm and quantum reinforcement learning are presented for quantum robot. The theoretic results show that quantum robot can reduce the complexity of O(N^2) in traditional robot to O(N^(3/2)) using quantum searching algorithm, and the simulation results demonstrate that quantum robot is also superior to traditional robot in efficient learning by novel quantum reinforcement learning algorithm. Considering the advantages of quantum robot, its some potential important applications are also analyzed and prospected.

  6. A polynomial projection algorithm for linear programming

    E-Print Network [OSTI]

    2013-05-03T23:59:59.000Z

    algorithm is based on a procedure whose input is a homogeneous system of linear ..... In this case s = 0 and the procedure sets the output vector yout to 0.

  7. Optimized quantum random-walk search algorithms

    E-Print Network [OSTI]

    V. Potocek; A. Gabris; T. Kiss; I. Jex

    2008-12-12T23:59:59.000Z

    Shenvi, Kempe and Whaley's quantum random-walk search (SKW) algorithm [Phys. Rev. A 67, 052307 (2003)] is known to require $O(\\sqrt N)$ number of oracle queries to find the marked element, where $N$ is the size of the search space. The overall time complexity of the SKW algorithm differs from the best achievable on a quantum computer only by a constant factor. We present improvements to the SKW algorithm which yield significant increase in success probability, and an improvement on query complexity such that the theoretical limit of a search algorithm succeeding with probability close to one is reached. We point out which improvement can be applied if there is more than one marked element to find.

  8. IIR algorithms for adaptive line enhancement

    SciTech Connect (OSTI)

    David, R.A.; Stearns, S.D.; Elliott, G.R.; Etter, D.M.

    1983-01-01T23:59:59.000Z

    We introduce a simple IIR structure for the adaptive line enhancer. Two algorithms based on gradient-search techniques are presented for adapting the structure. Results from experiments which utilized real data as well as computer simulations are provided.

  9. EFFICIENT ALGORITHMS FOR MINING ARBITRARY SHAPED CLUSTERS

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.2 Phase 1 Kmeans Algorithm . . . . . . . . . . . . . . . . . . . . . . 33 3.2.1 Kmeans . . . . . . . . . . . . . . . . . . . . . . 49 3.6.2 Comparison of Kmeans Initialization Methods . . . . . . . . . 50 3.6.3 Results on

  10. Five-dimensional Janis-Newman algorithm

    E-Print Network [OSTI]

    Harold Erbin; Lucien Heurtier

    2014-11-07T23:59:59.000Z

    The Janis-Newman algorithm has been shown to be successful in finding new sta- tionary solutions of four-dimensional gravity. Attempts for a generalization to higher dimensions have already been found for the restricted cases with only one angular mo- mentum. In this paper we propose an extension of this algorithm to five dimensions with two angular momenta - using the prescription of G. Giampieri - through two specific examples, that are the Myers-Perry and BMPV black holes. We also discuss possible enlargements of our prescriptions to other dimensions and maximal number of angular momenta, and show how dimensions higher than six appear to be much more challenging to treat within this framework. Nonetheless this general algorithm provides a unification of the formulation in d = 3, 4, 5 of the Janis-Newman algorithm, from which which expose several examples including the BTZ black hole.

  11. Journes MAS 2010, Bordeaux Session : Algorithmes Stochastiques

    E-Print Network [OSTI]

    Boyer, Edmond

    Carlo adaptatives par Jrome Lelong Adaptive Monte Carlo methods are powerful variance reduction a randomly truncated stochastic algorithm. Finally, we apply this technique to the valuation of nancial deri

  12. Jun. 6, 2013 BBM 202 -ALGORITHMS

    E-Print Network [OSTI]

    Erdem, Erkut

    that would create a clockwise turn. 11 aham scan. Choose point p with smallest (or largest) y that would create a clockwise turn. aham scan algorithm p an. e point p with smallest (or largest) y

  13. Patterns hidden from simple algorithms Madhu Sudan

    E-Print Network [OSTI]

    Sudan, Madhu

    Patterns hidden from simple algorithms Madhu Sudan February 7, 2011 Is the number the most notorious example. Madhu Sudan (madhu@mit.edu) is a Principal Researcher at Microsoft Research

  14. Large scale prediction models and algorithms

    E-Print Network [OSTI]

    Monsch, Matthieu (Matthieu Frederic)

    2013-01-01T23:59:59.000Z

    Over 90% of the data available across the world has been produced over the last two years, and the trend is increasing. It has therefore become paramount to develop algorithms which are able to scale to very high dimensions. ...

  15. An algorithmic approach to social networks

    E-Print Network [OSTI]

    Liben-Nowell, David

    2005-01-01T23:59:59.000Z

    Social networks consist of a set of individuals and some form of social relationship that ties the individuals together. In this thesis, we use algorithmic techniques to study three aspects of social networks: (1) we analyze ...

  16. Generation of large-scale winds in horizontally anisotropic convection

    E-Print Network [OSTI]

    von Hardenberg, J; Provenzale, A; Spiegel, E A

    2015-01-01T23:59:59.000Z

    We simulate three-dimensional, horizontally periodic Rayleigh-B\\'enard convection between free-slip horizontal plates, rotating about a horizontal axis. When both the temperature difference between the plates and the rotation rate are sufficiently large, a strong horizontal wind is generated that is perpendicular to both the rotation vector and the gravity vector. The wind is turbulent, large-scale, and vertically sheared. Horizontal anisotropy, engendered here by rotation, appears necessary for such wind generation. Most of the kinetic energy of the flow resides in the wind, and the vertical turbulent heat flux is much lower on average than when there is no wind.

  17. Next generation geothermal power plants. Draft final report

    SciTech Connect (OSTI)

    Brugman, John; Hattar, John; Nichols, Kenneth; Esaki, Yuri

    1994-12-01T23:59:59.000Z

    The goal of this project is to develop concepts for the next generation geothermal power plant(s) (NGGPP). This plant, compared to existing plants, will generate power for a lower levelized cost and will be more competitive with fossil fuel fired power plants. The NGGPP will utilize geothermal resources efficiently and will be equipped with contingencies to mitigate the risk of reservoir performance. The NGGPP design will attempt to minimize emission of pollutants and consumption of surface water and/or geothermal fluids for cooling service.

  18. SHALE: An Efficient Algorithm for Allocation of Guaranteed Display Advertising

    E-Print Network [OSTI]

    Bharadwaj, Vijay; Ma, Wenjing; Nagarajan, Chandrashekhar; Tomlin, John; Vassilvitskii, Sergei; Vee, Erik; Yang, Jian

    2012-01-01T23:59:59.000Z

    Motivated by the problem of optimizing allocation in guaranteed display advertising, we develop an efficient, lightweight method of generating a compact {\\em allocation plan} that can be used to guide ad server decisions. The plan itself uses just O(1) state per guaranteed contract, is robust to noise, and allows us to serve (provably) nearly optimally. The optimization method we develop is scalable, with a small in-memory footprint, and working in linear time per iteration. It is also "stop-anytime", meaning that time-critical applications can stop early and still get a good serving solution. Thus, it is particularly useful for optimizing the large problems arising in the context of display advertising. We demonstrate the effectiveness of our algorithm using actual Yahoo! data.

  19. Spectral Representations of Uncertainty: Algorithms and Applications

    SciTech Connect (OSTI)

    George Em Karniadakis

    2005-04-24T23:59:59.000Z

    The objectives of this project were: (1) Develop a general algorithmic framework for stochastic ordinary and partial differential equations. (2) Set polynomial chaos method and its generalization on firm theoretical ground. (3) Quantify uncertainty in large-scale simulations involving CFD, MHD and microflows. The overall goal of this project was to provide DOE with an algorithmic capability that is more accurate and three to five orders of magnitude more efficient than the Monte Carlo simulation.

  20. Algorithms for revenue metering and their evaluation

    E-Print Network [OSTI]

    Martinez-Lagunes, Rodrigo

    2000-01-01T23:59:59.000Z

    ALGORITHMS FOR REVENUE METERING AND THEIR EVALUATION A Thesis by RODRIGO MARTINEZ-LAGUNES Submitted to the Office of Graduate Studies of Texas AdcM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May... 2000 Major Subject: Electrical Engineering ALGORITHMS FOR REVENUE METERING AND THEIR EVALUATION A Thesis By RODRIGO MARTINEZ-LAGUNES Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER...