National Library of Energy BETA

Sample records for integrated iterative solution

  1. Iterated integrals of superconnections

    E-Print Network [OSTI]

    Igusa, Kiyoshi

    2009-01-01

    Starting with a Z-graded superconnection on a graded vector bundle over a smooth manifold M, we show how Chen's iterated integration of such a superconnection over smooth simplices in M gives an A-infinity functor if and only if the superconnection is flat. If the graded bundle is trivial, this gives a twisting cochain. Very similar results were obtained by K.T. Chen using similar methods. This paper is intended to explain this from scratch beginning with the definition and basic properties of a connection and ending with an exposition of Chen's "formal connections" and a brief discussion of how this is related to higher Reidemeister torsion.

  2. Iterative solutions of simultaneous equations 

    E-Print Network [OSTI]

    Laycock, Guyron Brantley

    1962-01-01

    ITERATIVE SOLUTIONS OP SIKJLTANEOUS EQUATIONS G~cn Hrantlep I aycock Approved. as to style snd, content by& (Chairman of Committee) E. c. (Head. of Department August 1/62 ACKNOWLEDGEMENT The author wishes to thank Dr. Hi A. Luther for his time sn4.... . . . ~ ~ . . ~ III. JACOBI AND 6AUSS-SEIDEL METHODS I V ~ C ONCLUS I GN ~ ~ ~ a ~ ~ ~ t ~ ~ ~ ~ a ~ 1 ~ ~ ~ ~ ~ ~ 9 ~ . ~ 18 V BIBLIOGRAPHY ~ ~ ~ o ~ ~ t ~ ~ ~ ~ 1 ~ ~ ~ VI ~ APPENDIX ~ ~ o ~ ~ e ~ o ~ ~ o o ~ ~ ~ . 22 Px'ogl am Lisliiixlgs...

  3. ITERATED INTEGRALS OF SUPERCONNECTIONS KIYOSHI IGUSA

    E-Print Network [OSTI]

    Igusa, Kiyoshi

    ITERATED INTEGRALS OF SUPERCONNECTIONS KIYOSHI IGUSA Abstract. Iterated integration of a connection gives the holonomy or parallel transport of the connection. Iterated integration of a superconnection gives something else which we call a "superconnection parallel transport." We ask under what conditions

  4. ITERATED INTEGRALS OF SUPERCONNECTIONS KIYOSHI IGUSA

    E-Print Network [OSTI]

    Igusa, Kiyoshi

    ITERATED INTEGRALS OF SUPERCONNECTIONS KIYOSHI IGUSA Abstract. Starting with a Z-graded superconnection on a graded vector bun- dle over a smooth manifold M, we show how Chen's iterated integration of such a superconnection over smooth simplices in M gives an A functor if and only if the superconnection is flat

  5. Iterative Solution of Global Electromagnetic Wave elds with Finite Elements

    E-Print Network [OSTI]

    Jaun, André

    memory savings, but it is also more e cient than a direct solution and paves the way;result in considerable memory savings and should also allow for an easy paral- lelisation. Iterative

  6. Error Control of Iterative Linear Solvers for Integrated Groundwater Models

    E-Print Network [OSTI]

    Dixon, Matthew; Brush, Charles; Chung, Francis; Dogrul, Emin; Kadir, Tariq

    2010-01-01

    An open problem that arises when using modern iterative linear solvers, such as the preconditioned conjugate gradient (PCG) method or Generalized Minimum RESidual method (GMRES) is how to choose the residual tolerance in the linear solver to be consistent with the tolerance on the solution error. This problem is especially acute for integrated groundwater models which are implicitly coupled to another model, such as surface water models, and resolve both multiple scales of flow and temporal interaction terms, giving rise to linear systems with variable scaling. This article uses the theory of 'forward error bound estimation' to show how rescaling the linear system affects the correspondence between the residual error in the preconditioned linear system and the solution error. Using examples of linear systems from models developed using the USGS GSFLOW package and the California State Department of Water Resources' Integrated Water Flow Model (IWFM), we observe that this error bound guides the choice of a prac...

  7. ITERATED INTEGRALS OF SUPERCONNECTIONS 0902a KIYOSHI IGUSA

    E-Print Network [OSTI]

    Igusa, Kiyoshi

    ITERATED INTEGRALS OF SUPERCONNECTIONS 0902a KIYOSHI IGUSA Abstract. Iterated integration of a superconnection gives something else which we call a "superconnection parallel transport." We ask under what the superconnection parallel transports give homotopies and higher homotopies of these chain maps. This happens

  8. Iteration Method for the Solution of the Eigenvalue Problem of Linear Differential and

    E-Print Network [OSTI]

    Iteration Method for the Solution of the Eigenvalue Problem of Linear Differential and Integral of computation on desk calculators. Since part of the INA mission was to pro- mote the effective use of the new. 9]. Yet the descrip- tion is spare and elegant. He begins by noting that linear differential

  9. Accelerated Iterative Method for Solving Steady Solutions of Linearized Atmospheric Models

    E-Print Network [OSTI]

    Watanabe, Masahiro

    Accelerated Iterative Method for Solving Steady Solutions of Linearized Atmospheric Models Masahiro approach, referred to as the accelerated iterative method (AIM), is developed for solving steady state, respectively. For ensuring the accelerated asymptotic convergence of iterative procedure

  10. From Use Cases of the Joint European Torus towards Integrated Commissioning Requirements of the ITER Tokamak

    E-Print Network [OSTI]

    From Use Cases of the Joint European Torus towards Integrated Commissioning Requirements of the ITER Tokamak

  11. Error Control of Iterative Linear Solvers for Integrated Groundwater Models

    E-Print Network [OSTI]

    California at Davis, University of

    Error Control of Iterative Linear Solvers for Integrated Groundwater Models by Matthew F. Dixon1 for integrated groundwater models, which are implicitly coupled to another model, such as surface water models in legacy groundwater modeling packages, resulting in the overall simulation speedups as large as 7

  12. Towards Baseline Operation Integrating ITER-Relevant Core and Edge Plasma within the Constraint of the ITER-Like Wall at JET

    E-Print Network [OSTI]

    Towards Baseline Operation Integrating ITER-Relevant Core and Edge Plasma within the Constraint of the ITER-Like Wall at JET

  13. Engineering aspects of design and integration of ECE diagnostic in ITER

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

    Udintsev, V. S.; Taylor, G.; Pandya, H. K.B.; Austin, M. E.; Casal, N.; Catalin, R.; Clough, M.; Cuquel, B.; Dapena, M.; Drevon, J. -M.; et al

    2015-03-12

    ITER ECE diagnostic [1] needs not only to meet measurement requirements, but also to withstand various loads, such as electromagnetic, mechanical, neutronic and thermal, and to be protected from stray ECH radiation at 170 GHz and other millimeter wave emission, like Collective Thomson scattering which is planned to operate at 60 GHz. Same or similar loads will be applied to other millimetre-wave diagnostics [2], located both in-vessel and in-port plugs. These loads must be taken into account throughout the design phases of the ECE and other microwave diagnostics to ensure their structural integrity and maintainability. The integration of microwave diagnosticsmore »with other ITER systems is another challenging activity which is currently ongoing through port integration and in-vessel integration work. Port Integration has to address the maintenance and the safety aspects of diagnostics, too. Engineering solutions which are being developed to support and to operate ITER ECE diagnostic, whilst complying with safety and maintenance requirements, are discussed in this paper.« less

  14. An efficient preconditioned iterative solution of fully-coupled elastohydrodynamic lubrication problems

    E-Print Network [OSTI]

    Jimack, Peter

    An efficient preconditioned iterative solution of fully-coupled elastohydrodynamic lubrication elastohydrodynamic lubrication line and point contact problems. The new blockwise preconditioner that is presented that both grow linearly with the number of unknowns. Keywords: elastohydrodynamic lubrication; finite

  15. ITER

    SciTech Connect (OSTI)

    Cowley, Steve

    2005-10-10

    This year six international partners have signed up to construct the first burning plasma experiment -- ITER -- in the South of France.It is over 50 years since the beginning of national programs to produce controlled fusion energy. The challenge of fusion energy has proven harder than was first anticipated. In this Colloquium Steve Cowley from UCLA will explain the scientific issues and how the difficulties have been overcome.

  16. Iterative Solution of Global Electromagnetic Wavefields with Finite Elements

    E-Print Network [OSTI]

    Jaun, André

    memory savings, but it is also more efficient than a direct solution and paves the way implemented in the PetSc software library [23] and 2 #12; result in considerable memory savings and should

  17. Solution characters of iterative coupling between energy simulation and CFD programs

    E-Print Network [OSTI]

    Zhai, John Z.

    and have acceptable indoor air quality. Estimation of building energy usage normally uses man- ual methods) system. On the other hand, computer simulation of energy usage in buildings by advanced energy simulationSolution characters of iterative coupling between energy simulation and CFD programs Zhiqiang Zhaia

  18. Solution characters of iterative coupling between energy simulation and CFD programs

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    1 Solution characters of iterative coupling between energy simulation and CFD programs Zhiqiang Energy simulation (ES) and computational fluid dynamics (CFD) provide important and complementary information for building energy and indoor environment designs. A coupled ES and CFD simulation can eliminate

  19. Iterative solutions to large sparse finite element equations 

    E-Print Network [OSTI]

    Wang, Hongbing

    1995-01-01

    for the direct and PCG methods using various storage formats. Effects of different material properties and external loading on the convergence rate and solution time are also analyzed. The test problems for this study are based on the three-dimensional linear...

  20. Chapter 5 & 6 1. Evaluate the iterated integral ? 3 ? 2 xy (x2 + y2 ...

    E-Print Network [OSTI]

    2015-04-06

    Chapter 5 & 6. 1. Evaluate the iterated integral. ? 3. 1. ? 2. 1 xy. (x2 + y2). 3/2 dxdy. 2. Find the volume bounded by the graph of f(x, y)=1+2x + 3y, the rectangle

  1. Development and Integration Issues and Solutions

    E-Print Network [OSTI]

    renewable energy nowadays Wind forecast and use in reserve calculation Influence of wind power on balancing in reserve calculation Influence of wind power on balancing reserves Probabilistic sizing of reserves RealWind Development and Integration Issues and Solutions The Northwest Wind Integration Forum Portland

  2. A comparison of conjugate gradient, SIP, and other iterative methods for the solution of Poisson's equation with irregular boundary conditions

    SciTech Connect (OSTI)

    Bergmann, D.J.

    1990-06-01

    Several well known iterative methods for solving Poisson's equation, including Strongly Implicit Procedure and several preconditioned conjugate gradient methods are first applied to a problem with simple boundary conditions and a known solution. Then a problem with more complicated boundary conditions, similar to those encountered when modeling AVLIS plasmas, is solved. Differences in the solutions of the various methods are examined through the use of Fourier analysis. It was found that combinations of different iterative schemes will in some cases be the most efficient method of solution. 22 refs., 29 figs.

  3. Integrating Variable Renewable Energy: Challenges and Solutions

    SciTech Connect (OSTI)

    Bird, L.; Milligan, M.; Lew, D.

    2013-09-01

    In the U.S., a number of utilities are adopting higher penetrations of renewables, driven in part by state policies. While power systems have been designed to handle the variable nature of loads, the additional supply-side variability and uncertainty can pose new challenges for utilities and system operators. However, a variety of operational and technical solutions exist to help integrate higher penetrations of wind and solar generation. This paper explores renewable energy integration challenges and mitigation strategies that have been implemented in the U.S. and internationally, including forecasting, demand response, flexible generation, larger balancing areas or balancing area cooperation, and operational practices such as fast scheduling and dispatch.

  4. Closed Integral Form Iteration Method Algorithm Newly derived Closed Integral Form Expansion of Raman Equation and

    E-Print Network [OSTI]

    Park, Namkyoo

    _Ij , . Results 71 (1530~1600nm, 1nm , : -13dBm) 14 (1425~1480nm, 5nm 1495nm) DSF(Dispersion Shifted evolution along the fiber after 6 iterations in the counter-pumping (1530 ~1600nm, with1nm spacing) Fig.3

  5. "Enhancing iterative solution methods for general FEM computations using rigid body modes."

    E-Print Network [OSTI]

    Vuik, Kees

    Structures Geomechanics Enhancing iterative solvers in Diana June 27, 2014 5 #12;Finite elements applications Structures Geomechanics Dams and dikes Enhancing iterative solvers in Diana June 27, 2014 5 #12;Finite elements applications Structures Geomechanics Dams and dikes Tunneling Enhancing iterative solvers in Diana

  6. Integrated Core-SOL-Divertor Modelling for ITER Including Impurity: Effect of Tungsten on Fusion Performance in H-mode and Hybrid Scenario

    E-Print Network [OSTI]

    Integrated Core-SOL-Divertor Modelling for ITER Including Impurity: Effect of Tungsten on Fusion Performance in H-mode and Hybrid Scenario

  7. Guide to Cement-Based Integrated Pavement Solutions

    E-Print Network [OSTI]

    Guide to Cement-Based Integrated Pavement Solutions August 2011 #12;Cement-Based Integrated Commercial Residential Recreation LAND USE CEMENT-BASED INTEGRATED PAVEMENT SOLUTIONS 1 2 3 4 5 6 7 8 Conventional Overlays CRCP VIBRATORY COMPACTION Pervious Concrete Full-Depth Reclamation Cement- Treat- ed Base

  8. INTEGRAL EQUATION PRECONDITIONING FOR THE SOLUTION OF POISSON'S EQUATION ON

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    INTEGRAL EQUATION PRECONDITIONING FOR THE SOLUTION OF POISSON'S EQUATION ON GEOMETRICALLY COMPLEX with the implementation and investigation of integral equation based solvers as preconditioners for finite difference discretizations of Poisson equations in geometrically complex domains. The target discretizations are those

  9. Twin-Screw Extruder and Pellet Accelerator Integration Developments for ITER

    SciTech Connect (OSTI)

    Meitner, Steven J [ORNL; Baylor, Larry R [ORNL; Combs, Stephen Kirk [ORNL; Fehling, Dan T [ORNL; Foust, Charles R [ORNL; McGill, James M [ORNL; Rasmussen, David A [ORNL; Maruyama, So [ITER Organization, Cadarache, France

    2011-01-01

    The ITER pellet injection system consisting of a twinscrew frozen hydrogen isotope extruder, coupled to a combination solenoid actuated pellet cutter and pneumatic pellet accelerator, is under development at the Oak Ridge National Laboratory. A prototype extruder has been built to produce a continuous solid deuterium extrusion and will be integrated with a secondary section, where pellets are cut, chambered, and launched with a single-stage pneumatic accelerator into the plasma through a guide tube. This integrated pellet injection system is designed to provide 5 mm fueling pellets, injected at a rate up to 10 Hz, or 3 mm edge localized mode (ELM) triggering pellets, injected at higher rates up to 20 Hz. The pellet cutter, chamber mechanism, and the solenoid operated pneumatic valve for the accelerator are optimized to provide pellet velocities between 200-300 m/s to ensure high pellet survivability while traversing the inner wall fueling guide tubes, and outer wall ELMpacing guide tubes. This paper outlines the current twin-screwextruder design, pellet accelerator design, and the integrationrequired for both fueling and ELM pacing pellets.

  10. Integral representation of solutions to Fuchsian system and Heun's equation

    E-Print Network [OSTI]

    Kouichi Takemura

    2007-07-09

    We obtain integral representations of solutions to special cases of the Fuchsian system of differential equations and Heun's differential equation. In particular, we calculate the monodromy of solutions to the Fuchsian equation that corresponds to Picard's solution of the sixth Painlev\\'e equation, and to Heun's equation.

  11. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 25, NO. 6, JUNE 2006 1087 SILCA: SPICE-Accurate Iterative Linear-Centric

    E-Print Network [OSTI]

    Shi, C.-J. Richard

    --A new circuit analysis method, named SPICE- accurate iterative linear-centric analysis (SILCA 2006 1087 SILCA: SPICE-Accurate Iterative Linear-Centric Analysis for Efficient Time-Domain Simulation integrated (VLSI) circuits with strong parasitic couplings. SILCA consists of two key linear-centric tech

  12. Iterative finite-difference solution analysis of acoustic wave equation in the Laplace-Fourier domain

    E-Print Network [OSTI]

    Um, E.S.

    2013-01-01

    mod- eling of the acoustic wave equation: Geophysics, 39,solution analysis of acoustic wave equation in the Laplace-solutions to the acoustic wave equation in the Laplace-

  13. Integrating Variable Renewable Energy: Challenges and Solutions

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIs gravity aOverviewISM IntegratedIntegrating

  14. Integral relations for solutions of confluent Heun equations

    E-Print Network [OSTI]

    Léa Jaccoud El-Jaick; Bartolomeu D. B. Figueiredo

    2015-03-02

    Firstly, we construct kernels of integral relations among solutions of the confluent Heun equation (CHE) and its limit, the reduced CHE (RCHE). In both cases we generate additional kernels by systematically applying substitutions of variables. Secondly, we establish integral relations between known solutions of the CHE that are power series and solutions that are series of special functions; and similarly for solutions of the RCHE. Thirdly, by using one of the integral relations as an integral transformation we obtain a new series solution of the spheroidal wave equation. From this solution we construct new solutions of the general CHE, and show that these are suitable for solving the radial part of the two-center problem in quantum mechanics. Finally, by applying a limiting process to kernels for the CHEs we obtain kernels for {two} double-confluent Heun equations. As a result, we deal with kernels of four equations of the Heun family, each equation presenting a distinct structure of singularities. In addition, we find that the known kernels for the Mathieu equation are special instances of kernels of the RCHE.

  15. Modified Chebyshev-Picard Iteration Methods for Solution of Initial Value and Boundary Value Problems 

    E-Print Network [OSTI]

    Bai, Xiaoli

    2011-10-21

    The solution of initial value problems (IVPs) provides the evolution of dynamic system state history for given initial conditions. Solving boundary value problems (BVPs) requires finding the system behavior where elements of the states are defined...

  16. A HIGH-FREQUENCY INTEGRAL EQUATION METHOD FOR ELECTROMAGNETIC AND ACOUSTIC SCATTERING SIMULATIONS : RATE OF CONVERGENCE OF MULTIPLE SCATTERING ITERATIONS

    E-Print Network [OSTI]

    Ecevit, Fatih

    A HIGH-FREQUENCY INTEGRAL EQUATION METHOD FOR ELECTROMAGNETIC AND ACOUSTIC SCATTERING SIMULATIONS an analysis of a recently proposed integral equation method for the solution of high-frequency elec properties of this series in the high-frequency regime depend solely on geometrical characteristics. Moreover

  17. Complete integration of the aligned Newman Tamburino Maxwell solutions

    E-Print Network [OSTI]

    Liselotte De Groote; Norbert Van den Bergh

    2008-04-07

    We investigate the cylindrical class of Newman Tamburino equations in the presence of an aligned Maxwell field. After obtaining a complete integration of the field equations we look at the possible vacuum limits and we examine the symmetries of the general solution.

  18. Geometric Integration: Numerical Solution of Differential Equations on Manifolds

    E-Print Network [OSTI]

    Scheichl, Robert

    and the solar system. Conserved quantities of a Hamiltonian system, such as energy, linear and angular momentumGeometric Integration: Numerical Solution of Differential Equations on Manifolds C.J. Budd 1 & A riches. Psalms 104:24 Since their introduction by Sir Isaac Newton, differential equations have played

  19. Solution to Quiz 4 Problem 1. (5 points) Find the improper integral ...

    E-Print Network [OSTI]

    2012-02-18

    Solution to Quiz 4. Problem 1. (5 points) Find the improper integral. ? +?. 4. 1 x. 3. 2 dx. Solution. By the definition of improper integral,. ? +?. 4. 1 x. 3. 2 dx =.

  20. Distributional and classical solutions to the Cauchy Boltzmann problem for soft potentials with integrable angular cross section

    E-Print Network [OSTI]

    Ricardo J. Alonso; Irene M. Gamba

    2010-02-13

    This paper focuses on the study of existence and uniqueness of distributional and classical solutions to the Cauchy Boltzmann problem for the soft potential case assuming $S^{n-1}$ integrability of the angular part of the collision kernel (Grad cut-off assumption). For this purpose we revisit the Kaniel--Shinbrot iteration technique to present an elementary proof of existence and uniqueness results that includes large data near a local Maxwellian regime with possibly infinite initial mass. We study the propagation of regularity using a recent estimate for the positive collision operator given in [3], by E. Carneiro and the authors, that permits to study such propagation without additional conditions on the collision kernel. Finally, an $L^{p}$-stability result (with $1\\leq p\\leq\\infty$) is presented assuming the aforementioned condition.

  1. Path Integral Solution of PT-/non-PT-Symmetric and non-Hermitian Morse Potential

    E-Print Network [OSTI]

    Nalan Kandirmaz; Ramazan Sever

    2008-12-14

    Path integral solutions are obtained for the the PT-/non-PT-Symmetric and non-Hermitian Morse Potential. Energy eigenvalues and the corresponding wave functions are obtained.

  2. A Holistic Solution for Duplicate Entity Identification in Deep Web Data Integration

    E-Print Network [OSTI]

    A Holistic Solution for Duplicate Entity Identification in Deep Web Data Integration Wei Liu 1 in deep Web data integration, the goal of duplicate entity identification is to discover the duplicate to deep Web data integration systems. That is, one duplicate entity matcher trained over two specific Web

  3. Dual Integrated Appliances as an Energy and Safety Solution for...

    Energy Savers [EERE]

    Building America Technology Solutions for New and Existing Homes: Performance of a Heat Pump Water Heater in the Hot-Humid Climate, Windermere, Florida (Fact Sheet) Space...

  4. ITER11/3/04 Y. Shimomura

    E-Print Network [OSTI]

    Conference Vilamoura, 2004-11-1 ITER Towards the Construction · Technical Preparations for Construction · Organisational Preparations for Construction · ITER as a Vehicle for Programme Integration · Negotiations Status. Independent Vacuum Vessel Support System #12;ITER11/3/04 Replaceable First Wall Panel Minimizing Waste #12

  5. Geographic data misalignment: Practical solutions for integrated data analysis

    E-Print Network [OSTI]

    Hargrove, William W.

    of the real power of a GIS, integrated analysis of using two or more data layers are more common where with a smart interpolation technique respectively. It should be noted that these national databases used in these studies continue to evolve in their overall qualities. Some of the data challenges encountered at the time

  6. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergy HeadquartersFuelBConservationEnergy5975-01 REPORT ONInstitutionalIntegrated2011

  7. Way Beyond Widgets: Delivering Integrated Lighting Design in Actionable Solutions

    SciTech Connect (OSTI)

    Myer, Michael; Richman, Eric E.; Jones, Carol C.

    2008-08-17

    Previously, energy-efficiency strategies for commercial spaces have focused on using efficient equipment without providing specific detailed instructions. Designs by experts in their fields are an energy-efficiency product in its own right. A new national program has developed interactive application-specific lighting designs for widespread use in four major commercial sectors. This paper will describe the technical basis for the solutions, energy efficiency and cost-savings methodology, and installations and measurement/verification to-date. Lighting designs have been developed for five types of retail stores (big box, small box, grocery, specialty market, and pharmacy) and are planned for the office, healthcare, and education sectors as well. Nationally known sustainable lighting designers developed the designs using high-performance commercially available products, daylighting, and lighting controls. Input and peer review was received by stakeholders, including manufacturers, architects, utilities, energy-efficiency program sponsors (EEPS), and end-users (i.e., retailers). An interactive web tool delivers the lighting solutions and analyzes anticipated energy savings using project-specific inputs. The lighting solutions were analyzed against a reference building using the space-by-space method as allowed in the Energy Standard for Buildings Except Low-Rise Residential Buildings (ASHRAE 2004) co-sponsored by the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) and the Illuminating Engineering Society of North America (IESNA). The results showed that the design vignettes ranged from a 9% to 28% reduction in the allowed lighting power density. Detailed control strategies are offered to further reduce the actual kilowatt-hour power consumption. When used together, the lighting design vignettes and control strategies show a modeled decrease in energy consumption (kWh) by 33% to 50% below the baseline design.

  8. Numerical solutions to integral equations of the Fredholm type 

    E-Print Network [OSTI]

    Pullin, John Henry

    1966-01-01

    %Y ) RETURN AK~SIN(X+Y) RETURN AK~EXP( ABS(X Y)) RETURN AK~(SIN&X-Y })442/&X-Y) RETURN END PROGRAM TO CALCULATE SHIFTED CHEBYSHEV POLYNOMIALS SUBROUT I NE CHES &Me X ~ TM ) DI MENS I QN TM (2D ) IF(M 1)2&3 ~ 2 2 TM(1) = I ~ IF(M 2)4e5 ~ 4 4 TM&2... FUNCTION AK(XeY AN) GO TO &)o2o3)sN 1 AK&I ~ 3 ' +X+Y RETURN 2 AK~SIN&X+Y) RETURN 3 AK~X+Y RETVRN END C THIS FUNCTION CONTAINS THE MAIN FUNCTION OF THE INTEGRAL C EQUATIONS IF IT IS ZERO WE HAVE A HOMOGENEOVS EQUATIONS FUNCTION FOFX(N ~ X) GO...

  9. A time integration scheme for stress - temperature dependent viscoelastic behaviors of isotropic materials 

    E-Print Network [OSTI]

    Khan, Kamran-Ahmed

    2009-05-15

    solutions within a general displacement based FE structural analyses for small deformations and uncoupled thermo-mechanical problems. A previously developed recursive-iterative algorithm for a stress-dependent hereditary integral model which was developed...

  10. Quantum integrability and Bethe ansatz solution for interacting matter-radiation systems

    E-Print Network [OSTI]

    Anjan Kundu

    2004-05-21

    A unified integrable system, generating a new series of interacting matter-radiation models with interatomic coupling and different atomic frequencies, is constructed and exactly solved through algebraic Bethe ansatz. Novel features in Rabi oscillation and vacuum Rabi splitting are shown on the example of an integrable two-atom Buck-Sukumar model with resolution of some important controversies in the Bethe ansatz solution including its possible degeneracy for such models.

  11. US ITER

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory of rare Kaonforsupernovae modelsearch this siteSearch Go! US ITER ABOUT US

  12. The first and second monotone integral principles for fundamental solutions of uniformly elliptic equations

    E-Print Network [OSTI]

    Xiao, Jie

    2009-01-01

    Two optimal monotone integral principles (equivalently for the Laplacian, two sharp iso-weighted-volume inequalities) are established through extending the first and second integral bounds of H. Weinberger for the Green functions (i.e., fundamental solutions) of uniformly elliptic equations in terms of the layer-cake formula, a one-dimensional monotone integral principle, and the isoperimetric and Jenson's inequalities with sharp constants. Surprisingly, a special setting of the first principle can be used to not only verify the low-dimensional P\\'olya conjecture for the principal eigenvalue of the Laplacian but also to characterize the geometry of the Nash inequality for a strong uniform elliptic equation.

  13. Integral-Balance Solution to the Stokes' First Problem of a Viscoelastic Generalized Second Grade Fluid

    E-Print Network [OSTI]

    Jordan Hristov

    2011-07-26

    Integral balance solution employing entire domain approximation and the penetration dept concept to the Stokes' first problem of a viscoelastic generalized second grade fluid has been developed. The solution has been performed by a parabolic profile with an unspecified exponent allowing optimization through minimization of the norm over the domain of the penetration depth. The closed form solution explicitly defines two dimensionless similarity variables and, responsible for the viscous and the elastic responses of the fluid to the step jump at the boundary. The solution was developed with three forms of the governing equation through its two dimensional forms (the main solution and example 1) and the dimensionless version showing various sides of the flow field and how the dimensionless groups control it: mainly the effect of the Deborah number. Numerical simulations demonstrating the effect of the various operating parameter and fluid properties on the developed flow filed have been performed.

  14. Two worlds, one smart card An integrated solution for physical access and logical security

    E-Print Network [OSTI]

    Hoepman, Jaap-Henk

    issued, controlling access to over 1500 buildings, fitted with in total more than 6000 smart card readers to office buildings and plants, companies these days issue their employees a (smart) card that is bothTwo worlds, one smart card An integrated solution for physical access and logical security using

  15. Two worlds, one smart card # An integrated solution for physical access and logical security

    E-Print Network [OSTI]

    Hoepman, Jaap-Henk

    issued, controlling access to over 1500 buildings, fitted with in total more than 6000 smart card readers#ce buildings and plants, companies these days issue their employees a (smart) card that is both an identityTwo worlds, one smart card # An integrated solution for physical access and logical security using

  16. US ITER | About

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

    U.S. ITER U.S. Hardware Contributions Quality Assurance Safety About U.S. ITER Home > About US ITER > Quality Assurance Quality Assurance The Quality Assurance Program is an...

  17. US ITER | Doing Business

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

    US ITER > Business Opportunties > For Vendors > Tokamak Cooling Water System Opportunities Tokamak Cooling Water System (TCWS) Opportunities US ITER has contracted with AREVA...

  18. ITER:The Future International Burning Plasma Experiment Present Status

    E-Print Network [OSTI]

    ITER5/8/01 ITER:The Future International Burning Plasma Experiment Present Status R. Aymar, ITER/8/01 strategic objective ¥ to establish fusion energy as a real energy option for the future Ð e.g. Òcreating availability and integration of essential fusion technologies Ð test components for a future reactor Ð test

  19. Integrability and Boundedness of Local Solutions to Singular and Degenerate Quasilinear Parabolic

    E-Print Network [OSTI]

    O'Leary, Michael

    Equations Mike O'Leary Abstract Integral and supremum estimates are proven for local solutions of de- 1 ) + c5|u|-1 + 2(x, t), AMS Classifications: 35K65, 35B45 Mike O'Leary, Department of Mathematics, Towson University, Towson, MD 21252 moleary@towson.edu #12;2 M. O'Leary (H5) 1 L p p-1 ,loc(T ), (H6) o

  20. An Integrated Water Treatment Technology Solution for Sustainable Water Resource Management in the Marcellus Shale

    SciTech Connect (OSTI)

    Matthew Bruff; Ned Godshall; Karen Evans

    2011-04-30

    This Final Scientific/ Technical Report submitted with respect to Project DE-FE0000833 titled 'An Integrated Water Treatment Technology Solution for Sustainable Water Resource Management in the Marcellus Shale' in support of final reporting requirements. This final report contains a compilation of previous reports with the most current data in order to produce one final complete document. The goal of this research was to provide an integrated approach aimed at addressing the increasing water resource challenges between natural gas production and other water stakeholders in shale gas basins. The objective was to demonstrate that the AltelaRain{reg_sign} technology could be successfully deployed in the Marcellus Shale Basin to treat frac flow-back water. That objective has been successfully met.

  1. US ITER Moving Forward

    ScienceCinema (OSTI)

    US ITER / ORNL

    2012-03-16

    US ITER Project Manager Ned Sauthoff, joined by Wayne Reiersen, Team Leader Magnet Systems, and Jan Berry, Team Leader Tokamak Cooling System, discuss the U.S.'s role in the ITER international collaboration.

  2. Integrated PEV Charging Solutions and Reduced Energy for Occupant Comfort (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01

    Brochure on Vehicle Testing and Integration Facility, featuring the Vehicle Modification Facility, Vehicle Test Pad and ReCharge Integrated Demonstration System. Plug-in electric vehicles (PEVs) offer the opportunity to shift transportation energy demands from petroleum to electricity, but broad adoption will require integration with other systems. While automotive experts work to reduce the cost of PEVs, fossil fueled cars and trucks continue to burn hundreds of billions of gallons of petroleum each year - not only to get from point A to point B, but also to keep passengers comfortable with air conditioning and heat. At the National Renewable Energy Laboratory (NREL), three installations form a research laboratory known as the Vehicle Testing and Integration Facility (VTIF). At the VTIF, engineers are developing strategies to address two separate but equally crucial areas of research: meeting the demands of electric vehicle-grid integration and minimizing fuel consumption related to vehicle climate control. Part of NREL's Center for Transportation Technologies and Systems (CTTS), the VTIF is dedicated to renewable and energy efficient solutions. This facility showcases technology and systems designed to increase the viability of sustainably powered vehicles. NREL researchers instrument every class of on-road vehicle, conduct hardware and software validation for electric vehicle (EV) components and accessories, and develop analysis tools and technology for the Department of Energy, other government agencies and industry partners. Research conducted at the VTIF examines the interaction of building energy systems, utility grids, renewable energy sources and PEVs, integrating energy management solutions, and maximizing potential greenhouse gas (GHG) reduction, while smoothing the transition and reducing costs for EV owners. NREL's collaboration with automakers, charging station manufacturers, utilities and fleet operators to assess technologies using VTIF resources is designed to enable PEV communication with the smart grid and create opportunities for vehicles to play an active role in building and grid management. Ultimately, this creates value for the vehicle owner and will help renewables be deployed faster and more economically, making the U.S. transportation sector more flexible and sustainable.

  3. Erratum to "Solutions problem 89-2: On the principal value of a quadruple integral", SIAM Rev. 32 (1990) 143

    E-Print Network [OSTI]

    Richard J. Mathar

    2014-11-22

    W. B. Jordan's conclusion that the quadruple principal value integral in problem 89-2 vanishes does not hold. The error sneaks in through a contribution of a subintegral which impedes some sign symmetry with respect to the master parameter (the Fermi radius) and which was overlooked in the published solution. In summary, the original problem of solving the quadruple integral remains unsolved.

  4. Solution

    E-Print Network [OSTI]

    Jony

    Qurz 2 SOLUTIONS, SECTION ALL. (10 pts.) Find the length of the curve. Solution. Using the formula for the arclength, of a curve onthe interval [0, 2],. 0. (5 pts.) ...

  5. RADIATION CHEMISTRY OF HIGH ENERGY CARBON, NEON AND ARGON IONS: INTEGRAL YIELDS FROM FERROUS SULFATE SOLUTIONS

    E-Print Network [OSTI]

    Christman, E.A.

    2010-01-01

    NEON AND ARGON IONS: INTEGRAL YIELDS FROM FERROUS SULFATENEON AND ARGON IONS: INTEGRAL YIELDS FROM FERROUS SULFATE

  6. Solutions

    E-Print Network [OSTI]

    2015-02-09

    Tank Mania! (1) Consider a 200 liter tank used to hold a dye solution with a concentration of 1g/liter. The tank needs to be rinsed with fresh water flowing in a

  7. Solution

    E-Print Network [OSTI]

    Jony

    2011-09-04

    Quiz 2, Section 11. P1. Find the cosine of the angle between the vectors bbb. AB and bbb. AC, where A = (2,b1,3), B = (1,1,2),. C = (3,1,0). Solution: First, we ...

  8. Solution

    E-Print Network [OSTI]

    2011-09-09

    Solution: We're looking for the presale cost of the shirt, so let x be the price of ... The sale price is $10 and we've called the presale price x, so we need to solve.

  9. Tetration: an iterative approach

    E-Print Network [OSTI]

    R. Aldrovandi

    2014-10-14

    A matrix approach to continuous iteration is proposed for general formal series. It leads, in particular, to an order{to{order iteration of the exponential function, and consequently to an algorithmic approach to tetration. Lower{order approximations suggest that tetration may come to be of great interest for the description of involved dynamical systems.

  10. ASYNCHRONOUS JACOBI ITERATIONS ON

    E-Print Network [OSTI]

    Bull, Mark

    ASYNCHRONOUS JACOBI ITERATIONS ON LOCAL MEMORY PARALLEL COMPUTERS A thesis submitted : : : : : : : : : : : : : : : : : : : : : : : 18 3 Jacobi­like Iterations 20 3.1 Serial algorithms : : : : : : : : : : : : : : : : : : : : : : : : : : : 20 3.2 Parallel versions of Jacobi and Gauss­Seidel algorithms : : : : : : 22 2 #12; 3

  11. Solution

    E-Print Network [OSTI]

    Jony

    sz 6, SECTION 171, T 2:30 PM. P1. Find the points in the cone 22 = x2 + y2 that are closest to the point (4, 2, 0). Solution 1: First, we note that given the point (4, ...

  12. A new iterative approach to solving the transport equation 

    E-Print Network [OSTI]

    Maslowski Olivares, Alexander Enrique

    2009-05-15

    We present a new iterative approach to solving neutral-particle transport problems. The scheme divides the transport solution into its particular and homogeneous or “source-free” components. The particular problem is solved ...

  13. ETR/ITER systems code

    SciTech Connect (OSTI)

    Barr, W.L.; Bathke, C.G.; Brooks, J.N.; Bulmer, R.H.; Busigin, A.; DuBois, P.F.; Fenstermacher, M.E.; Fink, J.; Finn, P.A.; Galambos, J.D.; Gohar, Y.; Gorker, G.E.; Haines, J.R.; Hassanein, A.M.; Hicks, D.R.; Ho, S.K.; Kalsi, S.S.; Kalyanam, K.M.; Kerns, J.A.; Lee, J.D.; Miller, J.R.; Miller, R.L.; Myall, J.O.; Peng, Y-K.M.; Perkins, L.J.; Spampinato, P.T.; Strickler, D.J.; Thomson, S.L.; Wagner, C.E.; Willms, R.S.; Reid, R.L.

    1988-04-01

    A tokamak systems code capable of modeling experimental test reactors has been developed and is described in this document. The code, named TETRA (for Tokamak Engineering Test Reactor Analysis), consists of a series of modules, each describing a tokamak system or component, controlled by an optimizer/driver. This code development was a national effort in that the modules were contributed by members of the fusion community and integrated into a code by the Fusion Engineering Design Center. The code has been checked out on the Cray computers at the National Magnetic Fusion Energy Computing Center and has satisfactorily simulated the Tokamak Ignition/Burn Experimental Reactor II (TIBER) design. A feature of this code is the ability to perform optimization studies through the use of a numerical software package, which iterates prescribed variables to satisfy a set of prescribed equations or constraints. This code will be used to perform sensitivity studies for the proposed International Thermonuclear Experimental Reactor (ITER). 22 figs., 29 tabs.

  14. US ITER | Jobs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUT US ITER |

  15. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUT US ITER

  16. Integrals and static solutions of general relativistic Liouville's equation in post Newtonian approximation

    E-Print Network [OSTI]

    V. Rezania; Y. Sobouti

    1998-04-27

    The post-Newtonian approximation of general relativistic Liouville's equation is presented. Two integrals of it, generalizations of the classical energy and angular momentum, are obtained. Polytropic models are constructed as an application.

  17. Extended Reaction Rate Integral as Solutions of Some General Differential Equations

    E-Print Network [OSTI]

    D. P. Joseph; H. J. Haubold

    2010-01-13

    Here an extended form of the reaction rate probability integral, in the case of nonresonant thermonuclear reactions with the depleted tail and the right tail cut off, is considered. The reaction rate integral then can be looked upon as the inverse of the convolution of the Mellin transforms of Tsallis type statistics of nonextensive statistical mechanics and stretched exponential as well as that of superstatistics and stretched exponentials. The differential equations satisfied by the extended probability integrals are derived. The idea used is a novel one of evaluating the extended integrals in terms of some special functions and then by invoking the differential equations satisfied by these special functions. Some special cases of limiting situations are also discussed.

  18. Integrated environmental degradation model for Fe-Ni-Cr alloys in irradiated aqueous solutions

    E-Print Network [OSTI]

    Pleune, Thomas Todd, 1974-

    1999-01-01

    An integrated model has been developed to evaluate the effect of reactor flux, fluence, and other operating conditions on crack growth rates in austenitic stainless steels in boiling water reactor (BWR) environments. The ...

  19. Integrated nondestructive assay solutions for plutonium measurement problems of the 21st century

    SciTech Connect (OSTI)

    Sampson, T.E.; Cremers, T.L.

    1997-12-01

    The authors describe automated and integrated nondestructive assay (NDA) systems configured to measure many of the materials that will be found in the Department of Energy complex in the dismantlement, disposition, residue stabilization, immobilization, and mixed oxide fuel programs. These systems are typified by the Advanced Recovery and Integrated Extraction System NDA system which is under construction at Los Alamos National Laboratory to measure the outputs of a weapon component dismantlement system.

  20. Integrated nondestructive assay solutions for plutonium measurement problems of the 21st century

    SciTech Connect (OSTI)

    Sampson, T.E.; Cremers, T.L.

    1997-08-01

    The authors describe automated and integrated NDA systems configured to measure many of the materials that will be found in the DOE complex in the dismantlement, disposition, residue stabilization, immobilization, and MOX fuel programs. These systems are typified by the ARIES (Advanced Recovery and Integrated Extraction System) nondestructive assay system which is under construction at Los Alamos to measure the outputs of a weapon component dismantlement system.

  1. ITER Fusion Energy

    ScienceCinema (OSTI)

    Dr. Norbert Holtkamp

    2010-01-08

    ITER (in Latin ?the way?) is designed to demonstrate the scientific and technological feasibility of fusion energy. Fusion is the process by which two light atomic nuclei combine to form a heavier over one and thus release energy. In the fusion process two isotopes of hydrogen ? deuterium and tritium ? fuse together to form a helium atom and a neutron. Thus fusion could provide large scale energy production without greenhouse effects; essentially limitless fuel would be available all over the world. The principal goals of ITER are to generate 500 megawatts of fusion power for periods of 300 to 500 seconds with a fusion power multiplication factor, Q, of at least 10. Q ? 10 (input power 50 MW / output power 500 MW). The ITER Organization was officially established in Cadarache, France, on 24 October 2007. The seven members engaged in the project ? China, the European Union, India, Japan, Korea, Russia and the United States ? represent more than half the world?s population. The costs for ITER are shared by the seven members. The cost for the construction will be approximately 5.5 billion Euros, a similar amount is foreseen for the twenty-year phase of operation and the subsequent decommissioning.

  2. Boundary integral solution of potential problems arising in the modelling of electrified oil films

    E-Print Network [OSTI]

    Chappell, David J

    2014-01-01

    We consider a class of potential problems on a periodic half-space for the modelling of electrified oil films, which are used in the development of novel switchable liquid optical devices (diffraction gratings). A boundary integral formulation which reduces the problem to the study of the oil-air interface alone is derived and solved in a highly efficient manner using the Nystr\\"{o}m method. The oil films encountered experimentally are typically very thin and thus an interface-only integral representation is important for avoiding the near-singularity problems associated with boundary integral methods for long slender domains. The super-algebraic convergence of the proposed methods is discussed and demonstrated via appropriate numerical experiments.

  3. Department of Energy ITER Project

    E-Print Network [OSTI]

    possible, the construction and technical management assumptions. The mission of ITER is to demonstrate of operation to meet demand, and manageable waste. Currently, the ITER project is at the stage where the final for proceeding with ITER construction, and they are assessing candidate construction sites at Cadarache, France

  4. The Fourier integral and its use in the solution of certain boundary value problems 

    E-Print Network [OSTI]

    McNutt, Wayne Eugene

    1952-01-01

    . & . e s, e . . ~ ~ ~ ~ 5 II. Definitions and Stated Theorerns. ~ ~ ~ ~ . ~ ~. . . 3 III. A Proof for the Convergence of the Fourier Integral. 6 IV, Different Forms of the Fourier Integral, . . . . , . 14 V. Fourier and Laplace Transforrnations... & b. 2. xa(a, b) means a & x ~ b. d 3. = is read "is by def1nition". 4. lf +'' kl ) y dy-1 y y+'"+l, 5. L [ f (t) I is read "the Laplace Transform of f (t)". 6. L ( F(s) ) is read "the inverse Laplace Transform of F(s)". Il. IIefinitions...

  5. Integrated Chemical Complex and Cogeneration Analysis System: Energy Conservation and Greenhouse Gas Management Solutions

    E-Print Network [OSTI]

    Pike, Ralph W.

    to determine the best configuration of plants in a chemical complex based the AIChE Total Cost Assessment(TCA) for economic, energy, environmental and sustainable costs and incorporates EPA Pollution Index methodology (WAR19f Integrated Chemical Complex and Cogeneration Analysis System: Energy Conservation

  6. Design Analysis and Manufacturing Studies for ITER In-Vessel Coils

    SciTech Connect (OSTI)

    Kalish, M.; Heitzenroeder, P.; Neumeyer, C.; Titus, P.; Zhai, Y.; Zatz, I.; Messineo, M.; Gomez, M.; Hause, C.; Daly, E.; Martin, A.; Wu, Y.; Jin, J.; Long, F.; Song, Y.; Wang, Z.; Yun, Zan; Hsiao, J.; Pillsbury, J. R.; Bohm, T.; Sawan, M.; Jiang, NFN

    2014-07-01

    ITER is incorporating two types of In Vessel Coils (IVCs): ELM Coils to mitigate Edge Localized Modes and VS Coils to provide Vertical Stabilization of the plasma. Strong coupling with the plasma is required so that the ELM and VS Coils can meet their performance requirements. Accordingly, the IVCs are in close proximity to the plasma, mounted just behind the Blanket Shield Modules. This location results in a radiation and temperature environment that is severe necessitating new solutions for material selection as well as challenging analysis and design solutions. Fitting the coil systems in between the blanket shield modules and the vacuum vessel leads to difficult integration with diagnostic cabling and cooling water manifolds.

  7. US ITER | Doing Business

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie, Z.;StaffBusinessITER

  8. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,Postings CareersITER's

  9. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUS ITER preps for

  10. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUS ITER preps

  11. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUS ITER

  12. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER ships

  13. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER

  14. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER6 News

  15. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER6 News7

  16. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER6 News78

  17. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER6 News789

  18. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER6

  19. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19 Publications 1. Xie,PostingsUSUSUS ITER6Videos US

  20. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUT US

  1. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUT USITER

  2. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUT USITERUS

  3. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUT

  4. US ITER | Media Corner

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUTBuilding

  5. US ITER | Why Fusion?

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map SiteUS ITER Jobs ABOUTBuilding

  6. US ITER | About

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With WIPPfinal design and fabrication of theIon Cyclotron HeatingITER

  7. What is ITER

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking WithTelecentricNCubic Feet)CompletesResearchWhatWhat doITER?

  8. Conformational effect on small angle neutron scattering behavior of interacting polyelectrolyte solutions: a perspective of integral equation theory

    SciTech Connect (OSTI)

    Chen, Wei-Ren [ORNL; Do, Changwoo [ORNL; Hong, Kunlun [ORNL; Liu, Yun [National Institute of Standards and Technology (NIST); Porcar, L. [National Institute of Standards and Technology (NIST); Shew, Chwen-Yang [City University of New York (CUNY); Smith, Greg [ORNL

    2012-01-01

    We present small angle neutron scattering (SANS) measurements of deuterium oxide (D2O) solutions of linear and star sodium poly(styrene sulfonate) (NaPSS) as a function of polyelectrolyte concentration. Emphasis is on understanding the dependence of their SANS coherent scattering cross section I(Q) on the molecular architecture of single polyelectrolyte. The key finding is that for a given concentration, star polyelectrolytes exhibit more pronounced characteristic peaks in I(Q), and the position of the first peak occurs at a smaller Q compared to their linear counterparts. Based on a model of integral equation theory, we first compare the SANS experimental I(Q) of salt free polyelectrolyte solutions with that predicted theoretically. Having seen their satisfactory qualitative agreement, the dependence of counterion association behavior on polyelectrolyte geometry and concentration is further explored. Our predictions reveal that the ionic environment of polyelectrolyte exhibits a strong dependence on polyelectrolyte geometry at lower polyelectrolyte concentration. However, when both linear and star polyelectrolytes exceed their overlap concentrations, the spatial distribution of counterion is found to be essentially insensitive to polyelectrolyte geometry due to the steric effect.

  9. ITER helium ash accumulation

    SciTech Connect (OSTI)

    Hogan, J.T.; Hillis, D.L.; Galambos, J.; Uckan, N.A. ); Dippel, K.H.; Finken, K.H. . Inst. fuer Plasmaphysik); Hulse, R.A.; Budny, R.V. . Plasma Physics Lab.)

    1990-01-01

    Many studies have shown the importance of the ratio {upsilon}{sub He}/{upsilon}{sub E} in determining the level of He ash accumulation in future reactor systems. Results of the first tokamak He removal experiments have been analysed, and a first estimate of the ratio {upsilon}{sub He}/{upsilon}{sub E} to be expected for future reactor systems has been made. The experiments were carried out for neutral beam heated plasmas in the TEXTOR tokamak, at KFA/Julich. Helium was injected both as a short puff and continuously, and subsequently extracted with the Advanced Limiter Test-II pump limiter. The rate at which the He density decays has been determined with absolutely calibrated charge exchange spectroscopy, and compared with theoretical models, using the Multiple Impurity Species Transport (MIST) code. An analysis of energy confinement has been made with PPPL TRANSP code, to distinguish beam from thermal confinement, especially for low density cases. The ALT-II pump limiter system is found to exhaust the He with maximum exhaust efficiency (8 pumps) of {approximately}8%. We find 1<{upsilon}{sub He}/{upsilon}{sub E}<3.3 for the database of cases analysed to date. Analysis with the ITER TETRA systems code shows that these values would be adequate to achieve the required He concentration with the present ITER divertor He extraction system.

  10. An exact Lagrangian integral for the Newtonian gravitational field strength

    E-Print Network [OSTI]

    Thomas Buchert

    2006-01-23

    An exact expression for the gravitational field strength in a self-gravitating dust continuum is derived within the Lagrangian picture of continuum mechanics. From the Euler-Newton system a transport equation for the gravitational field strength is formulated and then integrated along trajectories of continuum elements. The resulting integral solves one of the Lagrangian equations of the corresponding Lagrange-Newton system in general. Relations to known exact solutions without symmetry in Newtonian gravity are discussed. The presented integral may be employed to access the non-perturbative regime of structure formation in Newtonian cosmology, and to apply iterative Lagrangian schemes to solve the Lagrange-Newton system.

  11. Combined Field Integral Equation Based Theory of Characteristic Mode

    E-Print Network [OSTI]

    Qi I. Dai; Qin S. Liu; Hui Gan; Weng Cho Chew

    2015-03-04

    Conventional electric field integral equation based theory is susceptible to the spurious internal resonance problem when the characteristic modes of closed perfectly conducting objects are computed iteratively. In this paper, we present a combined field integral equation based theory to remove the difficulty of internal resonances in characteristic mode analysis. The electric and magnetic field integral operators are shown to share a common set of non-trivial characteristic pairs (values and modes), leading to a generalized eigenvalue problem which is immune to the internal resonance corruption. Numerical results are presented to validate the proposed formulation. This work may offer efficient solutions to characteristic mode analysis which involves electrically large closed surfaces.

  12. US ITER Project Brad Nelson

    E-Print Network [OSTI]

    US ITER Project Progress Brad Nelson Chief Engineer, US ITER Project Office Fusion Energy Sciences beam injector test facility in Padova, Italy ELISE ion source at IPP, Garching, Germany Extraction grid/Nelson 22 Delivered Partial Production Completion of Production Full Production · Central Solenoid

  13. Perspectives International Workshop on MFE Roadmapping in the ITER Era

    E-Print Network [OSTI]

    Perspectives (summary) International Workshop on MFE Roadmapping in the ITER Era Princeton. Any facility should be integrated in a comprehensive roadmap up to commercial fusion. Gaps left between each facility and the first FPP should be identified. Roadmaps should be credible. We cannot

  14. Nuclear Fusion: ITER Project Update

    E-Print Network [OSTI]

    Magnetic Fusion Research is a World-wide Endeavor... #12;U.S. ITER / Sauthoff Slide 3 Roadmap · Overview Slide 13 Roadmap · Overview of fusion and magnetic confinement systems · Demonstrating the scientific

  15. Multivariate discriminant and iterated resultant

    E-Print Network [OSTI]

    Jingjun Han

    2015-07-22

    In this paper, we study the relationship between iterated resultant and multivariate discriminant. We show that, for generic form $f(X_n)$ with even degree $d$, if the polynomial is squarefreed after each iteration, the multivariate discriminant $\\Delta(f)$ is a factor of the squarefreed iterated resultant. In fact, we find a factor $Hp(f,[x_1,\\ldots,x_n])$ of the squarefreed iterated resultant, and prove that the multivariate discriminant $\\Delta(f)$ is a factor of $Hp(f,[x_1,\\ldots,x_n])$. Moreover, we conjecture that $Hp(f,[x_1,\\ldots,x_n])=\\Delta(f)$ holds for generic form $f$, and show that it is true for generic trivariate form $f(x,y,z)$.

  16. Michel Claessens michel.claessens@iter.org

    E-Print Network [OSTI]

    savings/reductions for the ITER Construction phase. The Council suggested that mitigation of the effects

  17. Bragg x-ray survey spectrometer for ITER

    SciTech Connect (OSTI)

    Varshney, S. K.; Jakhar, S. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India); Barnsley, R. [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France); O'Mullane, M. G. [Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom)

    2012-10-15

    Several potential impurity ions in the ITER plasmas will lead to loss of confined energy through line and continuum emission. For real time monitoring of impurities, a seven channel Bragg x-ray spectrometer (XRCS survey) is considered. This paper presents design and analysis of the spectrometer, including x-ray tracing by the Shadow-XOP code, sensitivity calculations for reference H-mode plasma and neutronics assessment. The XRCS survey performance analysis shows that the ITER measurement requirements of impurity monitoring in 10 ms integration time at the minimum levels for low-Z to high-Z impurity ions can largely be met.

  18. Residential Buildings Integration (RBI)

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

    7 RBI Priorities for FY15 and Beyond Integrating Advanced Technologies for Homes: * Building integrated renewables * IAQVentilation solutions * Integrated high performance...

  19. ITER Engineering Design Activities -DesignITER-Central Solenoid

    E-Print Network [OSTI]

    , ~120¡C Cryoplant Nominal average He refrig. /liquefac. rate for magnets & divertor cryopumps (4.5K) 55 Plug (EC Heating) Torus Cryopump Divertor Main Engineering Features of ITER Superconducting Toroidal block which is fixed to vessel Materials Be armour, Cu-alloy heat sink, SS 316 LN structure Divertor (54

  20. Coaxial recess integration of InGaAs edge emitting laser diodes with waveguides on silicon substrates : a complete solution to laser integration on ICs

    E-Print Network [OSTI]

    Famenini, Shaya

    2012-01-01

    In this thesis, the first demonstration of the full integration of 1.55[mu]m InGaAs/InP edge emitting platelet laser diodes with SiON/SiO2 dielectric waveguides on a silicon substrate is presented. Small footprint laser ...

  1. New modeling and control solutions for integrated microgrid system with respect to thermodynamics properties of generation and demand

    E-Print Network [OSTI]

    Liu, Fang-Yu, S.M. Massachusetts Institute of Technology

    2014-01-01

    This thesis investigates microgrid control stability with respect to thermodynamics behaviors of generation and demand. First, a new integrated microgrid model is introduced. This model consists of a combined cycle power ...

  2. Efficient Solution of the Simplified PN Equations

    SciTech Connect (OSTI)

    Hamilton, Steven P [ORNL; Evans, Thomas M [ORNL

    2015-01-01

    In this paper we show new solver strategies for the multigroup SPN equations for nuclear reactor analysis. By forming the complete matrix over space, moments, and energy a robust set of solution strategies may be applied. Power iteration, shifted power iteration, Rayleigh quotient iteration, Arnoldi's method, and a generalized Davidson method, each using algebraic and physics-based multigrid preconditioners, have been compared on C5G7 MOX test problem as well as an operational PWR model. Our results show that the most ecient approach is the generalized Davidson method, that is 30{40 times faster than traditional power iteration and 6{10 times faster than Arnoldi's method.

  3. Towards the integration of mouse databases - definition and implementation of solutions to two use-cases in mouse functional genomics

    E-Print Network [OSTI]

    Gruenberger, Michael; Alberts, Rudi; Smedley, Damian; Swertz, Morris A; Schofield, Paul; Consortium, Casimir; Schughart, Klaus

    2010-01-22

    number of allelic variants in many genes, combina- tions thereof, and many knock-out mouse lines with deletions in single genes are available [1]. Research on mouse model systems has generated valuable discoveries for our understanding of the biological... genomics studies (see the Mouse Resource Browser MRB [7]). Ad-hoc integration of these databases is very difficult. Many databases require a separate login procedure and need to be accessed using different methods (e.g. via a website, downloadable files...

  4. Princeton Plasma Physics Lab - ITER

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram GuidelinesThousand CubicCubicengineering Thisroadmappingiter ITER

  5. ITER Project Scientific Foundations Mission

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower, WaveID-11383ISTIIT CapitalITER

  6. Research at ITER towards DEMO: Specific reactor diagnostic studies to be carried out on ITER

    SciTech Connect (OSTI)

    Krasilnikov, A. V.; Kaschuck, Y. A.; Vershkov, V. A.; Petrov, A. A.; Petrov, V. G.; Tugarinov, S. N. [Institution Project center ITER, Moscow (Russian Federation)

    2014-08-21

    In ITER diagnostics will operate in the very hard radiation environment of fusion reactor. Extensive technology studies are carried out during development of the ITER diagnostics and procedures of their calibration and remote handling. Results of these studies and practical application of the developed diagnostics on ITER will provide the direct input to DEMO diagnostic development. The list of DEMO measurement requirements and diagnostics will be determined during ITER experiments on the bases of ITER plasma physics results and success of particular diagnostic application in reactor-like ITER plasma. Majority of ITER diagnostic already passed the conceptual design phase and represent the state of the art in fusion plasma diagnostic development. The number of related to DEMO results of ITER diagnostic studies such as design and prototype manufacture of: neutron and ?–ray diagnostics, neutral particle analyzers, optical spectroscopy including first mirror protection and cleaning technics, reflectometry, refractometry, tritium retention measurements etc. are discussed.

  7. Introduction Iterative methods Deflation Experiments and results Conclusions and recommendations Iterative solution methods for the simulation

    E-Print Network [OSTI]

    Vuik, Kees

    -stream: CFD simulation package for glass industry Developed at TNO Science and Industry Lots of models available: combustion, turbulence, radiation, stirring, etc. Eline Jonkers TU Delft & TNO Science

  8. Preconditioning and iterative solution of symmetric indefinite linear systems arising

    E-Print Network [OSTI]

    Chuan, Toh Kim

    point methods for linear programming Joo-Siong Chai and Kim-Chuan Toh Abstract We propose to compute

  9. Funding for nuclear fusion Expensive Iteration

    E-Print Network [OSTI]

    producing more energy than is put in. The International Thermonuclear Experimental Reactor became plain ITER aims to produce energy by fusing together the nuclei of hydrogen atoms, confined in a magnetic field. The proposal also needs approval from the European Parliament. Some Green MEPs have called for ITER

  10. ITER site contest counts down Junichi Miura

    E-Print Network [OSTI]

    Thermonuclear Experimental Reactor (ITER), an international project to use nuclear fusion energy for electric on a site for the project. The ITER project envisions using thermonuclear fusion to generate huge amounts heavy hydrogen and tritium used for fuel in the fusion reaction are heated in a vacuum receptacle at 100

  11. ITER --"INTERNATIONAL THERMONUCLEAR EXPERIMENTAL RESEARCH PROGRAM".

    E-Print Network [OSTI]

    ITER -- "INTERNATIONAL THERMONUCLEAR EXPERIMENTAL RESEARCH PROGRAM". ORGANIZATION TO DIRECT WORLD plasmas and thermonuclear burn processes (cost -$1.5-36)2. (2) An expanded, more ambitious international Thermonuclear Experimental Research Program" by L. J. Perkins #12;NORMAL-CONDUCTING COPPER OPTIONS FOR THE ITER

  12. Fusion Plasma Physics and ITER - An Introduction (1/4)

    E-Print Network [OSTI]

    CERN. Geneva

    2011-01-01

    In November 2006, ministers representing the world’s major fusion research communities signed the agreement formally establishing the international project ITER. Sited at Cadarache in France, the project involves China, the European Union (including Switzerland), India, Japan, the Russian Federation, South Korea and the United States. ITER is a critical step in the development of fusion energy: its role is to confirm the feasibility of exploiting magnetic confinement fusion for the production of energy for peaceful purposes by providing an integrated demonstration of the physics and technology required for a fusion power plant. The ITER tokamak is designed to study the “burning plasma” regime in deuterium-tritium (D-T) plasmas by achieving a fusion amplification factor, Q (the ratio of fusion output power to plasma heating input power), of 10 for several hundreds of seconds with a nominal fusion power output of 500MW. It is also intended to allow the study of steady-state plasma operation at Q?5 by me...

  13. An iterative technique for the factorization of polynomials 

    E-Print Network [OSTI]

    Gray, Jerry Edwin

    1964-01-01

    is the complex field. The Kaczmarz Method is used for the solution of systems of simul- taneous linear equations. This method is used since the Kaczmarz Method seems well adapted to the complex field. Suppose we let n f(z) = E a z I-o be a polynomial in z... of degree n with a = 1. To obtain a factor of f (z) 0 of fixed degree m, where 1 ( m & n, we first arbitrarily choose a trial factor m g(z)= E pz i=o with p = 1. By the Method of Luther we iterate on tl. e set of numbers 0 p, 2 & I & m. The Kaczmarz...

  14. Truncated states obtained by iteration

    E-Print Network [OSTI]

    W. B. Cardoso; N. G. de Almeida

    2007-01-06

    Quantum states of the electromagnetic field are of considerable importance, finding potential application in various areas of physics, as diverse as solid state physics, quantum communication and cosmology. In this paper we introduce the concept of truncated states obtained via iterative processes (TSI) and study its statistical features, making an analogy with dynamical systems theory (DST). As a specific example, we have studied TSI for the doubling and the logistic functions, which are standard functions in studying chaos. TSI for both the doubling and logistic functions exhibit certain similar patterns when their statistical features are compared from the point of view of DST. A general method to engineer TSI in the running-wave domain is employed, which includes the errors due to the nonidealities of detectors and photocounts.

  15. IAEA-CN-SO/F-I-4 ITER: CONCEPT DEFINITION*

    E-Print Network [OSTI]

    way. 1. INTRODUCTION The activity of the International Thermonuclear Experimental Reactor (ITER. * The activity of the International Thermonuclear Experimental Reactor (ITER) is conducted under the auspices

  16. An iterative procedure to obtain inverse response functions for thick-target correction of measured charged-particle spectra

    E-Print Network [OSTI]

    S. Pomp; U. Tippawan

    2006-08-25

    A new method for correcting charged-particle spectra for thick target effects is described. Starting with a trial function, inverse response functions are found by an iterative procedure. The variances corresponding to the measured spectrum are treated similiarly and in parallel. Oscillations of the solution are avoided by rebinning the data to finer bins during a correction iteration and back to the original or wider binning after each iteration. This thick-target correction method has been used for data obtained with the MEDLEY facility at the The Svedberg Laboratory, Uppsala, Sweden, and is here presented in detail and demonstrated for two test cases.

  17. Iterative Algorithms for Nash Equilibrium of An Extended OSNR Game Yan Pan, Lacra Pavel

    E-Print Network [OSTI]

    Pavel, Lacra

    Iterative Algorithms for Nash Equilibrium of An Extended OSNR Game Yan Pan, Lacra Pavel Department in optical net- works. Based on the extended OSNR Nash game formu- lation that includes power capacity constraints in [10], the Nash equilibrium (NE) solution is analytically intractable and highly nonlinear. We

  18. Iterative approach to the characteristic time for chemical reactions of type A + B ! C + D

    E-Print Network [OSTI]

    R. Aldrovandi

    2013-10-13

    The analytic solution for the kinetic description of binary reactions can be seen as the continuum version of a basic discrete iterate mapping. This fact allows a clear definition of the reaction characteristic time which takes the backward effect into account.

  19. ITER Ion Cyclotron Heating and Fueling Systems

    SciTech Connect (OSTI)

    Rasmussen, D.A.; Baylor, L.R.; Combs, S.K.; Fredd, E.; Goulding, R.H.; Hosea, J.; Swain, D.W.

    2005-04-15

    The ITER burning plasma and advanced operating regimes require robust and reliable heating and current drive and fueling systems. The ITER design documents describe the requirements and reference designs for the ion cyclotron and pellet fueling systems. Development and testing programs are required to optimize, validate and qualify these systems for installation on ITER.The ITER ion cyclotron system offers significant technology challenges. The antenna must operate in a nuclear environment and withstand heat loads and disruption forces beyond present-day designs. It must operate for long pulse lengths and be highly reliable, delivering power to a plasma load with properties that will change throughout the discharge. The ITER ion cyclotron system consists of one eight-strap antenna, eight rf sources (20 MW, 35-65 MHz), associated high-voltage DC power supplies, transmission lines and matching and decoupling components.The ITER fueling system consists of a gas injection system and multiple pellet injectors for edge fueling and deep core fueling. Pellet injection will be the primary ITER fuel delivery system. The fueling requirements will require significant extensions in pellet injector pulse length ({approx}3000 s), throughput (400 torr-L/s,) and reliability. The proposed design is based on a centrifuge accelerator fed by a continuous screw extruder. Inner wall pellet injection with the use of curved guide tubes will be utilized for deep fueling.

  20. Damage to nearby divertor components of ITER-like devices during giant ELMs and disruptions

    E-Print Network [OSTI]

    Harilal, S. S.

    Damage to nearby divertor components of ITER-like devices during giant ELMs and disruptions. Fusion 50 (2010) 115004 (7pp) doi:10.1088/0029-5515/50/11/115004 Damage to nearby divertor components. The simulation results of the integrated modelling indicate a significant potential damage of the divertor nearby

  1. Optical dumps for H-alpha and visible spectroscopy in ITER

    SciTech Connect (OSTI)

    Andreenko, E. N.; Alekseev, A. G.; Gorshkov, A. V.; Orlovskiy, I. I. [NRC Kurchatov Institute, 123182 Moscow (Russian Federation)

    2014-08-21

    High-reflective Beryllium cover of ITER first wall (R?30–60%) causes remarkable increase of divertor stray light component (DSL). Optical dumps are well-known solution for DSL attenuation. In this work few types of optical dumps have been examined both by modeling and experimental studies. Taking into account the limitations, induced by ITER first wall design, OD optimized design has been proposed which could decrease divertor stray light component by 10..100 times depending on incidence angle of light.

  2. MELCOR 1.8.2 Analyses in Support of ITER’s RPrS

    SciTech Connect (OSTI)

    Brad J Merrill

    2008-01-01

    The International Thermonuclear Experimental Reactor (ITER) Program is performing accident analyses for ITER’s “Rapport Préliminaire de Sûreté” (Report Preliminary on Safety - RPrS) with a modified version of the MELCOR 1.8.2 code. The RPrS is an ITER safety document required in the ITER licensing process to obtain a “Décret Autorisation de Construction” (a Decree Authorizing Construction - DAC) for the ITER device. This report documents the accident analyses performed by the US with the MELCOR 1.8.2 code in support of the ITER RPrS effort. This work was funded through an ITER Task Agreement for MELCOR Quality Assurance and Safety Analyses. Under this agreement, the US was tasked with performing analyses for three accident scenarios in the ITER facility. Contained within the text of this report are discussions that identify the cause of these accidents, descriptions of how these accidents are likely to proceed, the method used to analyze the consequences of these accidents, and discussions of the transient thermal hydraulic and radiological release results for these accidents.

  3. Electromagnetic Analysis For The Design Of ITER Diagnostic Port Plugs During Plasma Disruptions

    SciTech Connect (OSTI)

    Zhai, Y

    2014-03-03

    ITER diagnostic port plugs perform many functions including structural support of diagnostic systems under high electromagnetic loads while allowing for diagnostic access to plasma. The design of diagnotic equatorial port plugs (EPP) are largely driven by electromagnetic loads and associate response of EPP structure during plasma disruptions and VDEs. This paper summarizes results of transient electromagnetic analysis using Opera 3d in support of the design activities for ITER diagnostic EPP. A complete distribution of disruption loads on the Diagnostic First Walls (DFWs). Diagnostic Shield Modules (DSMs) and the EPP structure, as well as impact on the system design integration due to electrical contact among various EPP structural components are discussed.

  4. The roadmap to magnetic confinement fusion Cutaway of the ITER tokamak. ( ITER)

    E-Print Network [OSTI]

    Hampshire, Damian

    The roadmap to magnetic confinement fusion Cutaway of the ITER tokamak. (© ITER) There are two ways "tokamak" configuration invented by Tamm and Sakharov in 1950 and declassified in 1957 [1] . Over 198 tokamaks have been built [2] . Four large tokamak projects were built in the 1980s. Two of these

  5. JJ, IAP Cambridge January 20101 Fusion Energy & ITER:Fusion Energy & ITER

    E-Print Network [OSTI]

    Billions ITERITER startsstarts DEMODEMO decisiondecision:: Fusion impact? Energy without greenEnergyJJ, IAP Cambridge January 20101 Fusion Energy & ITER:Fusion Energy & ITER: Challenges without green house gashouse gas #12;JJ, IAP Cambridge January 20103 3 D + T + He ++ n U235 n n Neutrons

  6. Report of a technical evaluation panel on the use of beryllium for ITER plasma facing material and blanket breeder material

    SciTech Connect (OSTI)

    Ulrickson, M.A.; Manly, W.D.; Dombrowski, D.E.

    1995-08-01

    Beryllium because of its low atomic number and high thermal conductivity, is a candidate for both ITER first wall and divertor surfaces. This study addresses the following: why beryllium; design requirements for the ITER divertor; beryllium supply and unirradiated physical/mechanical property database; effects of irradiation on beryllium properties; tritium issues; beryllium health and safety; beryllium-coolant interactions and safety; thermal and mechanical tests; plasma erosion of beryllium; recommended beryllium grades for ITER plasma facing components; proposed manufacturing methods to produce beryllium parts for ITER; emerging beryllium materials; proposed inspection and maintenance techniques for beryllium components and coatings; time table and costs; and the importance of integrating materials and manufacturing personnel with designers.

  7. Preliminary Master Logic Diagram for ITER operation

    SciTech Connect (OSTI)

    Cadwallader, L.C.; Taylor, N.P.; Poucet, A.E.

    1998-04-01

    This paper describes the work performed to develop a Master Logic Diagram (MLD) for the operations phase of the International Thermonuclear Experimental Reactor (ITER). The MLD is a probabilistic risk assessment tool used to identify the broad set of potential initiating events that could lead to an offsite radioactive or toxic chemical release from the facility under study. The MLD described here is complementary to the failure modes and effects analyses (FMEAs) that have been performed for ITER`s major plant systems in the engineering evaluation of the facility design. While the FMEAs are a bottom-up or component level approach, the MLD is a top-down or facility level approach to identifying the broad spectrum of potential events. Strengths of the MLD are that it analyzes the entire plant, depicts completeness in the accident initiator process, provides an independent method for identification, and can also identify potential system interactions. MLDs have been used successfully as a hazard analysis tool. This paper describes the process used for the ITER MLD to treat the variety of radiological and toxicological source terms present in the ITER design. One subtree of the nineteen page MLD is shown to illustrate the levels of the diagram.

  8. Quantum attacks against iterated block ciphers

    E-Print Network [OSTI]

    Marc Kaplan

    2015-04-26

    We study the amplification of security against quantum attacks provided by iteration of block ciphers. In the classical case, the Meet-in-the-middle attack is a generic attack against those constructions. This attack reduces the time required to break double iterations to only twice the time it takes to attack a single block cipher, given that the attacker has access to a large amount of memory. More abstractly, it shows that security by composition does not achieve exact multiplicative amplification. We present a quantized version of this attack based on an optimal quantum algorithm for the Element Distinctness problem. We then use the generalized adversary method to prove the optimality of the attack. An interesting corollary is that the time-space tradeoff for quantum attacks is very different from what classical attacks allow. This first result seems to indicate that composition resists better to quantum attacks than to classical ones because it prevents the quadratic speedup achieved by quantizing an exhaustive search. We investigate security amplification by composition further by examining the case of four iterations. We quantize a recent technique called the dissection attack using the framework of quantum walks. Surprisingly, this leads to better gains over classical attacks than for double iterations, which seems to indicate that when the number of iterations grows, the resistance against quantum attacks decreases.

  9. Annex I ITER Organization Service Contract General Conditions...

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

    All property of the Contractor while at the ITER Organization premises shall be at the risk of the Contractor and the ITER Organization shall accept no liability for any loss or...

  10. A Transport Synthetic Acceleration method for transport iterations 

    E-Print Network [OSTI]

    Ramone, Gilles Lionel

    1996-01-01

    We present a family of Transport Synthetic Acceleration (TSA) methods to iteratively solve within-group scattering problems. A single iteration in these schemes consists of a transport sweep followed by a low-order calculation ...

  11. November 19, 2009 ITER Fusion Reactor Faces New Delay

    E-Print Network [OSTI]

    and engineering team building the ITER fusion reactor was hoping for a green light today for its final design energy on earth. A site has been cleared at Cadarache in southern France for construction, and ITER staff

  12. A Recommendation System for Preconditioned Iterative Solvers 

    E-Print Network [OSTI]

    George, Thomas

    2011-02-22

    . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1. Level-based Incomplete Cholesky Factorization (IC(k)) . . 19 2. Threshold-based Incomplete Cholesky (ICT) . . . . . . . 20 3. Sparse Approximate Inverse (SAI) . . . . . . . . . . . . . 21 4. Algebraic Multigrid (AMG... that resulted in the best memory, time, and MTP per- formance profile area for the ILUPACK MLICT and WSMP ICT pre- conditioners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 VIII Iterative solver configurations that resulted in the best...

  13. ITER Project Status Positioning the US

    E-Print Network [OSTI]

    of the funds #12;ITER value is about 50% in "high-tech systems" TF Coils and Structure 10% PF/CS/CC 4% Nb3Sn 3% Cooling Water System 5% Building and Site Facilities 14% High-TechLower-Tech #12;Guidelines water 23% Tentative US in-kind contributions by Value High-TechLower-Tech #12;Overview of tentative US

  14. ITER Project Status Fusion Energy Sciences

    E-Print Network [OSTI]

    Convertor Systems Prototype of the AC/DC power converter for the ITER vertical stabilization coils% of Port-based Diagnostics ORNL 100% Ion Cyclotron Transmission Lines ORNL 100% Electron Cyclotron Transmission Lines ORNL Blanket/Shield (design support) ORNL 100% Roughing Pumps, Vacuum Auxiliary System SRNL

  15. Reapproaching Ramsey: Conditionals and Iterated Belief Change

    E-Print Network [OSTI]

    Schubart, Christoph

    Reapproaching Ramsey: Conditionals and Iterated Belief Change in the Spirit of AGM Hans Rott Final version of 25 November 2010 Abstract According to the Ramsey Test, conditionals reflect changes of beliefs") has seemed to show that the Ramsey test is not a viable analysis of conditionals if it is combined

  16. Insights from US ITER: Strategies for Accelerating

    E-Print Network [OSTI]

    Infrastructure Develop materials and systems iteratively #12;5. Organize for success. Avoid creation (new than a program. Mission: ·Rapid materials and fusion systems development, leading-making Design, build and upgrade basic facilities: avoid new facilities and new institutions Plan the teaming

  17. Accurate Direct Illumination Using Iterative Adaptive Sampling

    E-Print Network [OSTI]

    Bala, Kavita

    Accurate Direct Illumination Using Iterative Adaptive Sampling Michael Donikian, Bruce Walter with many lights and complex occlusion. Images are first divided into 8 Â 8 pixel blocks and for each point to be shaded within a block, a probability density function (PDF) is constructed over the lights and sampled

  18. Chirac calls ITER essential for planet's future

    E-Print Network [OSTI]

    Chirac calls ITER essential for planet's future CADARACHE, France, June 30 (AFP) - French President in southern France as vital to the planet's future, praising European solidarity in sealing the deal. "This project is essential for our future and the future of the planet," Chirac told some 1,500 invited guests

  19. AN ALGEBRAIC DESCRIPTION OF ITERATIVE DECODING SCHEMES

    E-Print Network [OSTI]

    Soljanin, Emina

    AN ALGEBRAIC DESCRIPTION OF ITERATIVE DECODING SCHEMES ELKE OFFER AND EMINA SOLJANIN Abstract University of Technology, D- 80290 Munich, Germany, elke@lnt.e-technik.tu-muenchen.de Mathematical Sciences Research Center, Bell Labs, Lucent Technologies, Murray Hill, NJ 07974, USA. emina@lucent.com 1 #12;2 E

  20. Overview of ITER ProjectOverview of ITER Project --organizational structure,organizational structure,

    E-Print Network [OSTI]

    , European Union · Conceptual design completed in 1991 · Detailed engineering design finalised in 2001Management StructureStructure ITER Council Management Advisory Board Director General (PDDG) PDDG Administration Fusion ­ Professionals ~200 (direct employer, secondees) ­ Technical Support Staff ~300 · Operation Phase ­ Professionals

  1. Application of Asymptotic Iteration Method (AIM) to a Deformed Well Problem

    E-Print Network [OSTI]

    Hakan Ciftci; H. Fatih Kisoglu

    2015-06-23

    We have used Asymptotic Iteration Method (AIM) for obtaining the eigenvalues of the Schrodinger's equation for a deformed well problem representing trigonometric functions. By solving the problem, we have found that the Schrodinger's equation for the considered potential has quasi-exact solutions. Additionally, we have also calculated the perturbation expansion of energy eigenvalues and found very simple analytical expression of the energy. Finally, we have considered more general cases and obtained energy eigenvalues for arbitrary potential parameters.

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

    E-Print Network [OSTI]

    Li, Tiffany Jing

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

  3. ACCELERATING ITERATIVE FIELD-COMPENSATED MR IMAGE RECONSTRUCTION ON GPUS

    E-Print Network [OSTI]

    Hwu, Wen-mei W.

    ACCELERATING ITERATIVE FIELD-COMPENSATED MR IMAGE RECONSTRUCTION ON GPUS Yue Zhuo1 , Xiao-Long Wu2 , Justin P. Haldar2 , Wen-mei Hwu2 , Zhi-pei Liang2 , Bradley P. Sutton1 1 Department of Bioengineering for iterative MR image reconstruction using Graphics Processing Units (GPU). In MRI, iterative reconstruction

  4. Dale M. Meade MFE Plenary Session on ITER Costs

    E-Print Network [OSTI]

    Dale M. Meade MFE Plenary Session on ITER Costs 2002 Fusion Summer Study Snowmass, CO July 9, 2002 FIRE Lighting the Way to Fusion http://fire.pppl.gov A Comparison of Unit Costs for FIRE and ITER #12;A Comparison of Unit Costs for FIRE and ITER · A simple rule of thumb for comparing costs of similar devices

  5. ITER-like wall sliced beryllium tiles The JET Enhanced Performance 2 (EP2) shutdown

    E-Print Network [OSTI]

    composition of ITER on JET is essential to save time and cost on the ITER project. Project objectives

  6. Senate panel orders US withdrawal from ITER Appropriators cite rising costs and mismanagement for terminating US participation in ITER, but

    E-Print Network [OSTI]

    -TN), ranking minority member of the subcommittee, said that US withdrawal from ITER would save US taxpayers

  7. Approximate Solutions to Several Visibility Optimization Problems

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    on the route. These problems are similar to the art gallery and watchman route problems, respectively. We propose a greedy iterative algorithm, formulated in the level set framework as the solution to the art that divides a domain () pop- ulated with occluders into visible and invisible regions as observed from

  8. on the Establishment of the ITER International Fusion Energy Organization for the Joint Implementation of the ITER Project

    E-Print Network [OSTI]

    AGREEMENT on the Establishment of the ITER International Fusion Energy Organization for the Joint Fusion Energy Organization Article 2 Purpose of the ITER Organization Article 3 Functions of the ITER://fusionforenergy.europa.eu/downloads/aboutf4e/l_35820061216en00620081.pdf #12;Preamble The European Atomic Energy Community (hereinafter

  9. ON THE C-INTEGRAL BENEDETTO BONGIORNO

    E-Print Network [OSTI]

    Talvila, Erik

    ON THE C-INTEGRAL BENEDETTO BONGIORNO Let F with an integration process (called totalization) that includes the Lebesgue integral and the Riemann improper integral. Two years later, a second solution was obtained by O. Perron with a method based

  10. Input to the FESAC Priorities Panel Alcator C-Mod The One Word Solution

    E-Print Network [OSTI]

    not exist even for ITER, let alone a reactor are (1) plasma-wall interactions, and (2) steady state plasma, and is one of the two major tokamak facilities in the US that directly support ITER, the decision and plasma engineering problems facing tokamak based fusion energy. Two, for which a solution currently does

  11. Approaches to confined alpha diagnostics on ITER

    SciTech Connect (OSTI)

    Fisher, R.K. [General Atomics, PO Box 85608, San Diego, California 92186-5608 (United States)

    2004-10-01

    Three approaches to obtain information on the confined fast alphas in the International Thermonuclear Experimental Reactor (ITER) are proposed. The first technique measures the energetic charge exchange (CX) neutrals that result from the alpha collision-induced knock-on fuel ion tails undergoing electron capture on the MeV D neutral beams planned for heating and current drive. The second technique measures the energetic knock-on neutron tail due to alphas using the lengths of the proton recoil tracks produced by neutron collisions in nuclear emulsions. The range of the 14 to 20 MeV recoil protons increases by {approx}140 {mu}m per MeV. The third approach would measure the CX helium neutrals resulting from confined alphas capturing two electrons in the ablation cloud surrounding a dense gas jet that has been proposed for disruption mitigation in ITER.

  12. Extortion outperforms generosity in iterated Prisoners' Dilemma

    E-Print Network [OSTI]

    Xu, Bin; Lien, Jaimie W; Zheng, Jie; Wang, Zhijian

    2015-01-01

    Promoting cooperation is an intellectual challenge in the social sciences, for which the iterated Prisoners' Dilemma (IPD) is a fundamental framework. The traditional view that there exists no simple ultimatum strategy whereby one player can unilaterally control the share of the surplus has been challenged by a new class of "zero-determinant" (ZD) strategies raised by Press and Dyson. In particular, the extortionate strategies can subdue the opponent and obtain higher scores. However, no empirical evidence has yet been found to support this theoretical finding. In a long-run laboratory experiment of the iterated Prisoners' Dilemma pairing each human subject with a computer co-player, we demonstrate that the extortionate strategy indeed outperforms the generous strategy against human subjects. Our results show that the extortionate strategy achieves higher scores than the generous strategy, the extortionate strategy promotes the cooperation rate to a similar level as the generous strategy does, and the human s...

  13. Statistical properties of an iterated arithmetic mapping

    SciTech Connect (OSTI)

    Feix, M.R.; Rouet, J.L.

    1994-07-01

    We study the (3x = 1)/2 problem from a probabilistic viewpoint and show a forgetting mechanism for the last k binary digits of the seed after k iterations. The problem is subsequently generalized to a trifurcation process, the (lx + m)/3 problem. Finally the sequence of a set of seeds is empirically shown to be equivalent to a random walk of the variable log{sub 2}x (or log{sub 3} x) though computer simulations.

  14. Automated structure solution with the PHENIX suite

    SciTech Connect (OSTI)

    Terwilliger, Thomas C [Los Alamos National Laboratory; Zwart, Peter H [LBNL; Afonine, Pavel V [LBNL; Grosse - Kunstleve, Ralf W [LBNL

    2008-01-01

    Significant time and effort are often required to solve and complete a macromolecular crystal structure. The development of automated computational methods for the analysis, solution, and completion of crystallographic structures has the potential to produce minimally biased models in a short time without the need for manual intervention. The PHENIX software suite is a highly automated system for macromolecular structure determination that can rapidly arrive at an initial partial model of a structure without significant human intervention, given moderate resolution, and good quality data. This achievement has been made possible by the development of new algorithms for structure determination, maximum-likelihood molecular replacement (PHASER), heavy-atom search (HySS), template- and pattern-based automated model-building (RESOLVE, TEXTAL), automated macromolecular refinement (phenix. refine), and iterative model-building, density modification and refinement that can operate at moderate resolution (RESOLVE, AutoBuild). These algorithms are based on a highly integrated and comprehensive set of crystallographic libraries that have been built and made available to the community. The algorithms are tightly linked and made easily accessible to users through the PHENIX Wizards and the PHENIX GUI.

  15. Automated Structure Solution with the PHENIX Suite

    SciTech Connect (OSTI)

    Zwart, Peter H.; Zwart, Peter H.; Afonine, Pavel; Grosse-Kunstleve, Ralf W.; Hung, Li-Wei; Ioerger, Tom R.; McCoy, A.J.; McKee, Eric; Moriarty, Nigel; Read, Randy J.; Sacchettini, James C.; Sauter, Nicholas K.; Storoni, L.C.; Terwilliger, Tomas C.; Adams, Paul D.

    2008-06-09

    Significant time and effort are often required to solve and complete a macromolecular crystal structure. The development of automated computational methods for the analysis, solution and completion of crystallographic structures has the potential to produce minimally biased models in a short time without the need for manual intervention. The PHENIX software suite is a highly automated system for macromolecular structure determination that can rapidly arrive at an initial partial model of a structure without significant human intervention, given moderate resolution and good quality data. This achievement has been made possible by the development of new algorithms for structure determination, maximum-likelihood molecular replacement (PHASER), heavy-atom search (HySS), template and pattern-based automated model-building (RESOLVE, TEXTAL), automated macromolecular refinement (phenix.refine), and iterative model-building, density modification and refinement that can operate at moderate resolution (RESOLVE, AutoBuild). These algorithms are based on a highly integrated and comprehensive set of crystallographic libraries that have been built and made available to the community. The algorithms are tightly linked and made easily accessible to users through the PHENIX Wizards and the PHENIX GUI.

  16. Iterative-build OMIT maps: map improvement by iterative model building and refinement without model bias

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Grosse-Kunstleve, Ralf W.; Afonine, Pavel V.; Moriarty, Nigel W.; Adams, Paul D. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Read, Randy J. [Department of Haematology, University of Cambridge, Cambridge CB2 0XY (United Kingdom); Zwart, Peter H. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Hung, Li-Wei [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2008-05-01

    An OMIT procedure is presented that has the benefits of iterative model building density modification and refinement yet is essentially unbiased by the atomic model that is built. A procedure for carrying out iterative model building, density modification and refinement is presented in which the density in an OMIT region is essentially unbiased by an atomic model. Density from a set of overlapping OMIT regions can be combined to create a composite ‘iterative-build’ OMIT map that is everywhere unbiased by an atomic model but also everywhere benefiting from the model-based information present elsewhere in the unit cell. The procedure may have applications in the validation of specific features in atomic models as well as in overall model validation. The procedure is demonstrated with a molecular-replacement structure and with an experimentally phased structure and a variation on the method is demonstrated by removing model bias from a structure from the Protein Data Bank.

  17. Power Handling in ITER: Divertor and Blanket Design and R&D M. Merola 1), D. Loesser 2), R. Raffray 1) on behalf of the ITER Organization, ITER

    E-Print Network [OSTI]

    Raffray, A. René

    the thermonuclear plasma and cover an area of about 850 m2 . The main function of the divertor is minimizing energy. The fusion reactions occur within the volume of the ITER vacuum vessel, which contains the thermonuclear plasma. One of the most technically challenging components of the ITER machine are plasma

  18. Nonlinear Projective-Iteration Methods for Solving Transport Problems on Regular and Unstructured Grids

    SciTech Connect (OSTI)

    Dmitriy Y. Anistratov; Adrian Constantinescu; Loren Roberts; William Wieselquist

    2007-04-30

    This is a project in the field of fundamental research on numerical methods for solving the particle transport equation. Numerous practical problems require to use unstructured meshes, for example, detailed nuclear reactor assembly-level calculations, large-scale reactor core calculations, radiative hydrodynamics problems, where the mesh is determined by hydrodynamic processes, and well-logging problems in which the media structure has very complicated geometry. Currently this is an area of very active research in numerical transport theory. main issues in developing numerical methods for solving the transport equation are the accuracy of the numerical solution and effectiveness of iteration procedure. The problem in case of unstructured grids is that it is very difficult to derive an iteration algorithm that will be unconditionally stable.

  19. US ITER (International Thermonuclear Experimental Reactor) shield and blanket design activities

    SciTech Connect (OSTI)

    Baker, C.C.

    1988-08-01

    This paper summarizes nuclear-related work in support of the US effort for the International Thermonuclear Experimental Reactor (ITER) Study. Primary tasks carried out during the past year include design improvements of the inboard shield developed for the TIBER concept, scoping studies of a variety of tritium breeding blanket options, development of necessary design guidelines and evaluation criteria for the blanket options, further safety considerations related to nuclear components, and issues regarding structural materials for an ITER device. The blanket concepts considered are the aqueous/Li salt solution, a water-cooled, solid breeder blanket, a helium-cooled, solid-breeder blanket, a blanket cooled by helium containing lithium-bearing particulates, and a blanket concept based on breeding tritium from He/sup 3/. 1 ref., 2 tabs.

  20. Iterative multiuser detection techniques for CDMA systems 

    E-Print Network [OSTI]

    Du, Xuechao

    2002-01-01

    previous iteration). For the information bns dt ~chinnel encoder mlerlea iy ubol iiiippcr spreader Sl iiiforiii itio bits d ch: net encode interleavcr symbol mapper li e'Icier + + channel te iiifoiiliailo lilts d chminel inlerlea er [ symbol... y(i), the nozse vaznance o, and thc przor code bit LLR, Az[b&(z)] u!hzch zs the output of the channel decod&r. Inztiahze Avz[b&(i)] = 0, bk(z) = 0. For i = 1, , &'l7 ~ Compute (1 ? b (i) tanh ? Az[b, (i)] bk(i) (b&(i), -, bk &(z), 0, bk&. &(i...

  1. US ITER toroidal field coil conductor produc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With WIPP UPDATE:AdministrationfollowingReportsUPF: ITER toroidal

  2. Microsoft Word - ex1b-ITER-mar07.doc

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

    PATENT RIGHTS - ACQUISITION BY THE GOVERNMENT - ITER (Mar 2007) (a) Definitions. (1) "Invention", as used in this clause, means any invention or discovery which is or may be...

  3. An Iterated, Multipoint Differential Transform Method for Numerically...

    Office of Scientific and Technical Information (OSTI)

    Differential Transform Method for Numerically Evolving Partial Differential Equation Initial-Value Problems Citation Details In-Document Search Title: An Iterated,...

  4. An adaptive sparse-grid-based iterative ensemble Kalman filter...

    Office of Scientific and Technical Information (OSTI)

    An adaptive sparse-grid-based iterative ensemble Kalman filter approach for parameter field estimation Citation Details In-Document Search Title: An adaptive sparse-grid-based...

  5. Practice Questions for Exam 3 Math 231 1. Describe/sketch the region whose area is given by the integral

    E-Print Network [OSTI]

    Borchers, Brian

    by the integral 2 2sin 0 0 rdrd . 2. Write ( , ) R f x y dA as an iterated integral where R is the region shown below and f is an arbitrary continuous function on R. 3. Rewrite the integral 2 11 1 1 0 ( , , ) y x f x y z dzdydx as an iterated integral in order dxdydz . 4. Find the mass of the plane lamina

  6. Innovation is Key from ITER to DEMO M. Porkolab, L. Bromberg, M. Greenwald, A. Hubbard,

    E-Print Network [OSTI]

    divertor/wall [1] Richard Pitts, "Physics basis and design of the ITER full-tungsten divertor", APS 2013 and wall in ITER is already a concern.1 [1] Richard Pitts, "Physics basis and design of the ITER full-tungsten divertor", APS 2013, Denver. #12;For PMI, the step from ITER to DEMO will be enormous. ITER ARIES- ACT1

  7. Diverse Power Iteration Embeddings and Its Applications

    SciTech Connect (OSTI)

    Huang H.; Yoo S.; Yu, D.; Qin, H.

    2014-12-14

    Abstract—Spectral Embedding is one of the most effective dimension reduction algorithms in data mining. However, its computation complexity has to be mitigated in order to apply it for real-world large scale data analysis. Many researches have been focusing on developing approximate spectral embeddings which are more efficient, but meanwhile far less effective. This paper proposes Diverse Power Iteration Embeddings (DPIE), which not only retains the similar efficiency of power iteration methods but also produces a series of diverse and more effective embedding vectors. We test this novel method by applying it to various data mining applications (e.g. clustering, anomaly detection and feature selection) and evaluating their performance improvements. The experimental results show our proposed DPIE is more effective than popular spectral approximation methods, and obtains the similar quality of classic spectral embedding derived from eigen-decompositions. Moreover it is extremely fast on big data applications. For example in terms of clustering result, DPIE achieves as good as 95% of classic spectral clustering on the complex datasets but 4000+ times faster in limited memory environment.

  8. Building America Technology Solutions for New and Existing Homes...

    Energy Savers [EERE]

    Retrofit Integrated Space and Water Heating-Field Assessment Building America Technology Solutions for New and Existing Homes: Retrofit Integrated Space and Water Heating-Field...

  9. San Diego 01.05.2001 Power and Particle Exhaust in ITER Slide 1 by G. Janeschitz, et.al. _______________________________________________________________________ ITER

    E-Print Network [OSTI]

    San Diego 01.05.2001 Power and Particle Exhaust in ITER Slide 1 by G. Janeschitz, et.al. ITER. Pacher, G. Pacher, R. Tivey, M. Sugihara, JCT and HTs #12;San Diego; 01.05.2001 Power and Particle to pump #12;San Diego; 01.05.2001 Power and Particle Exhaust in ITER Slide 3 by G. Janeschitz. ITER

  10. -structures and s-structures: Translating the iteration Gunter Fuchs

    E-Print Network [OSTI]

    Fuchs, Gunter

    -structures and s-structures: Translating the iteration strategies Gunter Fuchs Westf -structures to iterable s-structures and vice versa. To this end, I analyze how the translation functions. Both of these papers are based on my dissertation. In the first part, I intro- duced -structures and s-structures

  11. Plans for U.S. Contributions to ITER

    E-Print Network [OSTI]

    Physics Laboratory (New Jersey) · Electric Power Systems · Diagnostics Savannah River National LaboratoryPlans for U.S. Contributions to ITER Ned Sauthoff Director, U.S. ITER Project Office Fusion Power built on Spallation Neutron Source set ­ Work Breakdown Structure ­ Configuration Control ­ Quality

  12. October 6, 1997 ITER L-Mode Con nement Database

    E-Print Network [OSTI]

    October 6, 1997 ITER L-Mode Con nement Database S.M. Kaye and the ITER Con nement Database Working Group Abstract This paper describes the content of an L-mode database that has been compiled with data, and Tore-Supra. The database consists of a total of 2938 entries, 1881 of which are in the L-phase while

  13. Convergence of the Iterated Prisoner's Dilemma game Martin Dyer

    E-Print Network [OSTI]

    Greenhill, Catherine

    Convergence of the Iterated Prisoner's Dilemma game Martin Dyer Leslie Ann Goldberg Catherine and interaction topologies. We analyse the convergence rate of this rule when applied to the Iterated Prisoner and exponential when it is a complete graph. Keywords: Prisoner's dilemma, convergence, co-learning, Highest

  14. Beyond ITER: RF Heating and Current Drive Issues for DEMO

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    Current devices Need flexible RF systems for heating, CD, start-up, instability suppression, and profileBeyond ITER: RF Heating and Current Drive Issues for DEMO C. K. Phillips, J. C. Hosea, G. Taylor under development ­ May need Lower Hybrid for r/a > 0.6 (not currently on ITER) ­ Need feedback control

  15. Mathematics A Generalized JacobiDavidson iteration method

    E-Print Network [OSTI]

    Sleijpen, Gerard

    University Utrecht STUV Department of Mathematics A Generalized Jacobi­Davidson iteration method #12; A Generalized Jacobi­Davidson iteration method for linear eigenvalue problems \\Lambda Gerard L. The method is shown to have an interesting relation with an old method of Jacobi. This leads to a new method

  16. Budget Planning Meeting FY 2007 Status of ITER Negotiations

    E-Print Network [OSTI]

    Agreement · Determine process for ITER Agreement Ratification and Entry into Force #12;FY 2005 U.S. ITER President's Budget · CD-1 Approve Alternate Selection and Cost Range (June 2005) ·Lehman Review scheduled-kind" components · New Secretary of Energy, Dr. Samuel W. Bodman, engaged · Participated in recent US/Japan high

  17. Iterated Models and Failure Detectors (Brief notes for discussion)

    E-Print Network [OSTI]

    Lynch, Nancy

    power of iterated models at the same rate that it does on non- iterated models. Finally we provide new models. A. Cornejo (CSAIL) TDS Seminar October 11, 2007 2 / 17 #12;Agenda 1 Communication models Atomic models Atomic snapshot Atomic snapshot In a system with n processes, an atomic snapshot object is built

  18. Efficient computational methods for iterative cokriging Wolfgang Nowak

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    Efficient computational methods for iterative cokriging Wolfgang Nowak and Olaf A. Cirpka. Cokriging is, however, often restricted by its computational costs. We show how to increase the computational efficiency of iterative cokriging by using a combination of both well-known and newly developed

  19. Clans and Cooperation in the Iterated Prisoner's Dilemma Bryant A. Julstrom

    E-Print Network [OSTI]

    Julstrom, Bryant A.

    Clans and Cooperation in the Iterated Prisoner's Dilemma Bryant A. Julstrom Computer Science In evolutionary algorithms that evolve populations of strate- gies for the Iterated Prisoner's Dilemma, higher, Control Methods, and Search]: Heuristic Methods Keywords Iterated Prisoner's Dilemma, contest length

  20. R&D activities on RF contacts for the ITER ion cyclotron resonance heating launcher

    E-Print Network [OSTI]

    Hillairet, Julien; Bamber, Rob; Beaumont, Bertrand; Bernard, Jean-Michel; Delaplanche, Jean-Marc; Durodié, Frédéric; Lamalle, Philippe; Lombard, Gilles; Nicholls, Keith; Shannon, Mark; Vulliez, Karl; Cantone, Vincent; Hatchressian, Jean-Claude; Lebourg, Philippe; Martinez, André; Mollard, Patrick; Mouyon, David; Pagano, Marco; Patterlini, Jean-Claude; Soler, Bernard; Thouvenin, Didier; Toulouse, Lionel; Verger, Jean-Marc; Vigne, Terence; Volpe, Robert

    2015-01-01

    Embedded RF contacts are integrated within the ITER ICRH launcher to allow assembling, sliding and to lower the thermo-mechanical stress. They have to withstand a peak RF current up to 2.5 kA at 55 MHz in steady-state conditions, in the vacuum environment of themachine.The contacts have to sustain a temperature up to 250{\\textdegree}Cduring several days in baking operations and have to be reliable during the whole life of the launcher without degradation. The RF contacts are critical components for the launcher performance and intensive R&D is therefore required, since no RF contactshave so far been qualified at these specifications. In order to test and validate the anticipated RF contacts in operational conditions, CEA has prepared a test platform consisting of a steady-state vacuum pumped RF resonator. In collaboration with ITER Organization and the CYCLE consortium (CYclotronCLuster for Europe), an R&D program has been conducted to develop RF contacts that meet the ITER ICRH launcher specification...

  1. Miniaturized Turbine Offers Desalination Solution | GE Global...

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

    salt from ice New solution draws from the GE Store, integrating GE's experience with steam turbine, oil & gas compressors, 3D printing and water processing NISKAYUNA, NY,...

  2. Iterated Prisoners Dilemma with limited attention

    E-Print Network [OSTI]

    Çetin, Uzay

    2014-01-01

    How attention scarcity effects the outcomes of a game? We present our findings on a version of the Iterated Prisoners Dilemma (IPD) game in which players can accept or refuse to play with their partner. We study the memory size effect on determining the right partner to interact with. We investigate the conditions under which the cooperators are more likely to be advantageous than the defectors. This work demonstrates that, in order to beat defection, players do not need a full memorization of each action of all opponents. There exists a critical attention capacity threshold to beat defectors. This threshold depends not only on the ratio of the defectors in the population but also the attention allocation strategy of the players.

  3. Iterative build OMIT maps: Map improvement by iterative model-building and refinement without model bias

    SciTech Connect (OSTI)

    Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545, USA; Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720, USA; Department of Haematology, University of Cambridge, Cambridge CB2 0XY, England; Terwilliger, Thomas; Terwilliger, T.C.; Grosse-Kunstleve, Ralf Wilhelm; Afonine, P.V.; Moriarty, N.W.; Zwart, P.H.; Hung, L.-W.; Read, R.J.; Adams, P.D.

    2008-02-12

    A procedure for carrying out iterative model-building, density modification and refinement is presented in which the density in an OMIT region is essentially unbiased by an atomic model. Density from a set of overlapping OMIT regions can be combined to create a composite 'Iterative-Build' OMIT map that is everywhere unbiased by an atomic model but also everywhere benefiting from the model-based information present elsewhere in the unit cell. The procedure may have applications in the validation of specific features in atomic models as well as in overall model validation. The procedure is demonstrated with a molecular replacement structure and with an experimentally-phased structure, and a variation on the method is demonstrated by removing model bias from a structure from the Protein Data Bank.

  4. Nuclear Forensic Inferences Using Iterative Multidimensional Statistics

    SciTech Connect (OSTI)

    Robel, M; Kristo, M J; Heller, M A

    2009-06-09

    Nuclear forensics involves the analysis of interdicted nuclear material for specific material characteristics (referred to as 'signatures') that imply specific geographical locations, production processes, culprit intentions, etc. Predictive signatures rely on expert knowledge of physics, chemistry, and engineering to develop inferences from these material characteristics. Comparative signatures, on the other hand, rely on comparison of the material characteristics of the interdicted sample (the 'questioned sample' in FBI parlance) with those of a set of known samples. In the ideal case, the set of known samples would be a comprehensive nuclear forensics database, a database which does not currently exist. In fact, our ability to analyze interdicted samples and produce an extensive list of precise materials characteristics far exceeds our ability to interpret the results. Therefore, as we seek to develop the extensive databases necessary for nuclear forensics, we must also develop the methods necessary to produce the necessary inferences from comparison of our analytical results with these large, multidimensional sets of data. In the work reported here, we used a large, multidimensional dataset of results from quality control analyses of uranium ore concentrate (UOC, sometimes called 'yellowcake'). We have found that traditional multidimensional techniques, such as principal components analysis (PCA), are especially useful for understanding such datasets and drawing relevant conclusions. In particular, we have developed an iterative partial least squares-discriminant analysis (PLS-DA) procedure that has proven especially adept at identifying the production location of unknown UOC samples. By removing classes which fell far outside the initial decision boundary, and then rebuilding the PLS-DA model, we have consistently produced better and more definitive attributions than with a single pass classification approach. Performance of the iterative PLS-DA method compared favorably to that of classification and regression tree (CART) and k nearest neighbor (KNN) algorithms, with the best combination of accuracy and robustness, as tested by classifying samples measured independently in our laboratories against the vendor QC based reference set.

  5. The development of iterative and cascade methods for the rapid synthesis of ladder polyether natural products

    E-Print Network [OSTI]

    Heffron, Timothy Paul

    2005-01-01

    I. The Development of Methods for the Iterative Synthesis of Polytetrahydropyrans An iterative method comprising chain homologation, epoxidation, 6-endo cyclization, and protiodesilylation was developed. Notable achievements ...

  6. Filtered Iterative Reconstruction (FIR) via Proximal Forward-Backward Splitting: A Synergy of Analytical and Iterative Reconstruction Method for CT

    E-Print Network [OSTI]

    Gao, Hao

    2015-01-01

    This work is to develop a general framework, namely filtered iterative reconstruction (FIR) method, to incorporate analytical reconstruction (AR) method into iterative reconstruction (IR) method, for enhanced CT image quality. Specifically, FIR is formulated as a combination of filtered data fidelity and sparsity regularization, and then solved by proximal forward-backward splitting (PFBS) algorithm. As a result, the image reconstruction decouples data fidelity and image regularization with a two-step iterative scheme, during which an AR-projection step updates the filtered data fidelity term, while a denoising solver updates the sparsity regularization term. During the AR-projection step, the image is projected to the data domain to form the data residual, and then reconstructed by certain AR to a residual image which is in turn weighted together with previous image iterate to form next image iterate. Since the eigenvalues of AR-projection operator are close to the unity, PFBS based FIR has a fast convergenc...

  7. A Series Solution Framework for Finite-time Optimal Feedback Control, H-infinity Control and Games 

    E-Print Network [OSTI]

    Sharma, Rajnish

    2010-01-14

    . Cloutier17 introduced the State Dependent Riccati Equation (SDRE) approach for the approximate solution of nonlinear OCP, a concept borrowed from the LQ framework. Tewari18 and Sharma and Tewari19 presented iterative approximation techniques, which use...

  8. A E Costley, US/ITER Town meeting, San Diego, 22 April 2004 N 55 IP 57 04-04-30 F 1 International Thermonuclear Experimental Reactor

    E-Print Network [OSTI]

    -Vessel) (N/C) MSE based on heating beam Neutron Flux Monitors (Ex-Vessel) Microwave Diagnostics Gamma-Ray Spectrometers ECE Diagnostics for Main Plasma Neutron Activation System Reflectometers for Main Plasma Lost in ITER environment ~40 diagnostic systems have been selected for design, integration and budget provision

  9. Implementation of an iterative map in the construction of (quasi)periodic instantons: chaotic aspects and discontinuous rotation numbers

    E-Print Network [OSTI]

    A. Chakrabarti

    1998-01-05

    An iterative map of the unit disc in the complex plane (Appendix) is used to explore certain aspects of selfdual, four dimensional gauge fields (quasi)periodic in the Euclidean time. These fields are characterized by two topological numbers and contain standard instantons and monopoles as different limits. The iterations do not correspond directly to a discretized time evolution of the gauge fields. They are implemented in an indirect fashion. First, (t,r,\\theta,\\phi) being the standard coordinates, the (r,t) half plane is mapped on the unit disc in an appropriate way. This provides an (r,t) parametrization (Sec.1) of Z_0, the starting point of the iterations and makes the iterates increasingly complex functions of r and t. These are then incorporated as building blocks in the generating function of the fields (Sec.2). We explain (starting in Sec.1 and at different stages) in what sense and to what extent some remarkable features of our map (indicated in the title) are thus carried over into the continuous time development of the fields. Special features for quasiperiodicity are studied (Sec.3). Spinor solutions (Sec.4) and propagators (Sec.5) are discussed from the point of view of the mapping. Several possible generalizations are indicated (Sec.6). Some broader topics are discussd in conclusion (Sec.7).

  10. Nuclear modules of ITER tokamak systems code

    SciTech Connect (OSTI)

    Gohar, Y.; Baker, C.; Brooks, J.; Finn, P.; Hassanein, A.; Willms, S.; Barr, W.; Bushigin, A.; Kalyanam, K.M.; Haines, J.

    1987-10-01

    Nuclear modules were developed to model various reactor components in the ITER systems code. Several design options and cost algorithms are included for each component. The first wall, blanket and shield modules calculate the beryllium zone thickness, the disruptions results, the nuclear responses in different components including the toroidal field coils. Tungsten shield/water coolant/steel structure and steel shield/water coolant are the shield options for the inboard and outboard sections of the reactor. Lithium nitrate dissolved in the water coolant with a variable beryllium zone thickness in the outboard section of the reactor provides the tritium breeding capability. The reactor vault module defines the thickness of the reactor wall and the roof based on the dose equivalent during operation including skyshine contribution. The impurity control module provides the design parameters for the divertor including plate design, heat load, erosion rate, tritium permeation through the plate material to the coolant, plasma contamination by sputtered impurities, and plate lifetime. Several materials: Be, C, V, Mo, and W can be used for the divertor plate to cover a range of plasma edge temperatures. The tritium module calculates tritium and deuterium flow rates for the reactor plant. The tritium inventory in the fuelers, neutral beams, vacuum pumps, impurity control, first wall, and blanket is calculated. Tritium requirements are provided for different operating conditions. The nuclear models are summarized in this paper including the different design options and key analyses of each module. 39 refs., 3 tabs.

  11. AN ITERATIVE METHOD WITH CONVERGENCE RATE CHOSEN A PRIORI \\Lambda

    E-Print Network [OSTI]

    Mandel, Jan

    HEBERTON z , JAN MANDEL x AND PETR VAN Ÿ EK -- Abstract. With increasing demand for large­scale three. \\Lambda This paper was presented at the 1998 Copper Mountain Conference on Iterative Methods

  12. Evolution of Deixis: Personal Pronouns in an Iterated Learning Experiment 

    E-Print Network [OSTI]

    Komorowska, Krystyna

    2012-11-28

    To date, empirical research on language evolution has been based on entirely non-deictic languages. This study presents an experiment using the Iterated Learning Model to establish in what way deixis may affect process of language transmission...

  13. Sabina Griffith Email: Sabina.Griffith@iter.org

    E-Print Network [OSTI]

    was approved at the extraordinary IC on July 28, 2010. This report included a new strategy for cost savings containment and cost savings. The ITER Council noted with approval the recent progress and pace of development

  14. Design and analysis of iteratively decodable codes for ISI channels 

    E-Print Network [OSTI]

    Doan, Dung Ngoc

    2005-11-01

    Recent advancements in iterative processing have allowed communication systems to perform close to capacity limits withmanageable complexity.For manychannels such as the AWGN and ?at fading channels, codes that ...

  15. Project Manager, U.S. ITER INSIDE: ITER Site Progress Washington

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptions |(Conference) | SciTechProjectITER Project Manager

  16. 25th SOFE, San Francisco, CA, June 11-14, 2013 2013, ITER Organization

    E-Print Network [OSTI]

    Raffray, A. René

    25th SOFE, San Francisco, CA, June 11-14, 2013 © 2013, ITER Organization Slide 1 ITER Blanket Engineering, San Francisco, CA, June 11-14, 2013 The views and opinions expressed herein do not necessarily reflect those of the ITER Organization #12;25th SOFE, San Francisco, CA, June 11-14, 2013 © 2013, ITER

  17. Test blanket modules in ITER: An overview on proposed designs and required DEMO-relevant materials

    E-Print Network [OSTI]

    Abdou, Mohamed

    Test blanket modules in ITER: An overview on proposed designs and required DEMO-relevant materials, Russian Federation Abstract Within the framework of the ITER Test Blanket Working Group, the ITER Parties have made several proposals for test blanket modules to be tested in ITER from the first day of H

  18. Design of the ITER First Wall and Blanket A. Rene Raffray

    E-Print Network [OSTI]

    Raffray, A. René

    Design of the ITER First Wall and Blanket A. Rene Raffray TKM, Internal Components Division ITER-mail: mario.merola@iter.org Abstract--This paper summarizes the status of the ITER blanket system design and describes some of the key R&D activities in support of the design with the goal of starting procurement

  19. Numerical simulations of welds of thick steel pieces of interest for the thermonuclear fusion ITER machine

    E-Print Network [OSTI]

    Carmignani, B

    2005-01-01

    Numerical simulations of welds of thick steel pieces of interest for the thermonuclear fusion ITER machine

  20. Inside ITER seminar on History of Fusion Page 1 History of Fusion

    E-Print Network [OSTI]

    Union thermonuclear explosion 400kT #12;Inside ITER seminar on History of Fusion Page 4 Big IvanInside ITER seminar on History of Fusion Page 1 History of Fusion Personal view V. Chuyanov 9 July 2009 Special thanks to ITER Communication Division. #12;Inside ITER seminar on History of Fusion Page 2

  1. WALLDYN Simulations of Global Impurity Migration and Fuel Retention in JET and Extrapolations to ITER

    E-Print Network [OSTI]

    WALLDYN Simulations of Global Impurity Migration and Fuel Retention in JET and Extrapolations to ITER

  2. Chaotic scattering in solitary wave interactions: A singular iterated-map description

    E-Print Network [OSTI]

    Roy H. Goodman

    2007-10-17

    We derive a family of singular iterated maps--closely related to Poincare maps--that describe chaotic interactions between colliding solitary waves. The chaotic behavior of such solitary wave collisions depends on the transfer of energy to a secondary mode of oscillation, often an internal mode of the pulse. Unlike previous analyses, this map allows one to understand the interactions in the case when this mode is excited prior to the first collision. The map is derived using Melnikov integrals and matched asymptotic expansions and generalizes a ``multi-pulse'' Melnikov integral and allows one to find not only multipulse heteroclinic orbits, but exotic periodic orbits. The family of maps derived exhibits singular behavior, including regions of infinite winding. This problem is shown to be a singular version of the conservative Ikeda map from laser physics and connections are made with problems from celestial mechanics and fluid mechanics.

  3. Robust parallel iterative solvers for linear and least-squares problems, Final Technical Report

    SciTech Connect (OSTI)

    Saad, Yousef

    2014-01-16

    The primary goal of this project is to study and develop robust iterative methods for solving linear systems of equations and least squares systems. The focus of the Minnesota team is on algorithms development, robustness issues, and on tests and validation of the methods on realistic problems. 1. The project begun with an investigation on how to practically update a preconditioner obtained from an ILU-type factorization, when the coefficient matrix changes. 2. We investigated strategies to improve robustness in parallel preconditioners in a specific case of a PDE with discontinuous coefficients. 3. We explored ways to adapt standard preconditioners for solving linear systems arising from the Helmholtz equation. These are often difficult linear systems to solve by iterative methods. 4. We have also worked on purely theoretical issues related to the analysis of Krylov subspace methods for linear systems. 5. We developed an effective strategy for performing ILU factorizations for the case when the matrix is highly indefinite. The strategy uses shifting in some optimal way. The method was extended to the solution of Helmholtz equations by using complex shifts, yielding very good results in many cases. 6. We addressed the difficult problem of preconditioning sparse systems of equations on GPUs. 7. A by-product of the above work is a software package consisting of an iterative solver library for GPUs based on CUDA. This was made publicly available. It was the first such library that offers complete iterative solvers for GPUs. 8. We considered another form of ILU which blends coarsening techniques from Multigrid with algebraic multilevel methods. 9. We have released a new version on our parallel solver - called pARMS [new version is version 3]. As part of this we have tested the code in complex settings - including the solution of Maxwell and Helmholtz equations and for a problem of crystal growth.10. As an application of polynomial preconditioning we considered the problem of evaluating f(A)v which arises in statistical sampling. 11. As an application to the methods we developed, we tackled the problem of computing the diagonal of the inverse of a matrix. This arises in statistical applications as well as in many applications in physics. We explored probing methods as well as domain-decomposition type methods. 12. A collaboration with researchers from Toulouse, France, considered the important problem of computing the Schur complement in a domain-decomposition approach. 13. We explored new ways of preconditioning linear systems, based on low-rank approximations.

  4. Ethan Burns (UNH) Iterative-deepening Search with On-line Tree Size Prediction 1 / 30 Iterative-deepening Search with On-line Tree Size Prediction

    E-Print Network [OSTI]

    Ruml, Wheeler

    Ethan Burns (UNH) Iterative-deepening Search with On-line Tree Size Prediction ­ 1 / 30 Iterative-deepening Search with On-line Tree Size Prediction Ethan Burns and Wheeler Ruml {eaburns, ruml} at cs Evaluation Ethan Burns (UNH) Iterative-deepening Search with On-line Tree Size Prediction ­ 2 / 30 On

  5. Numerical solution of the inversion integral 

    E-Print Network [OSTI]

    Bradford, Halley Oren

    1964-01-01

    ( t & T and if both fcnctions sxe oi" exponential order, then there exists same k & 0, snch that f(s) is of oWr s (i. e. 1im s f(s) & M, M & 0). s~ ee Theorem IY. The limiting valnes of F(t) and its corresponding XaP1am transform, if it exists, are given by lim... particular source. 2 le* ???? . A c??z * ?er ??????a???r??raa. imaginary, oi" the form x + iy, where x aml y are real numbers scd. i -l. d complex number is an imaginary number when y p O and a 2 pure isisginsry number when x O aud y P O. Absolute value...

  6. EXECUTIVE SUMMARY: Integrative Solutions for a

    E-Print Network [OSTI]

    Hayden, Nancy J.

    -ecological systems. We at the University of Vermont, as members of an institution that is already a nationally by Vermont's Green Mountains to the east and New York's Adirondack Mountains to the West. It is grounded, Vermont, the Nation, and the world. Photo credit: University of Vermont 2006 Campus Master Plan #12

  7. Integrated Energy Solutions LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam:on OpeneiAlbanian Centre for EnergyTorcuato Di TellaIntechLLC

  8. Solution A

    E-Print Network [OSTI]

    2011-03-27

    MA 261 - Quiz 7 (20 minutes). Tuesday, March 8, 2011. Solution. Statistics (out of 20): Section. 23. 24. Average. 14.4 13.4. Standard Deviation 4.5. 4.6. Median.

  9. Solutions 5

    E-Print Network [OSTI]

    2001-12-07

    Solutions 5. 1. A ring A is called a Boolean ring if x2 = x for all x ? A. (a) Let E be a set and 2E its power set. Show that a Boolean ring structure is defined.

  10. Integrated EPC

    SciTech Connect (OSTI)

    Kerby, L.A. [Calpine Corp., San Jose, CA (United States)

    1995-11-01

    A continuing challenge facing the independent power industry is building better plants at lower cost. Price considerations have forced many developers to re-focus their capabilities to create viable, new alternatives to traditional turnkey project contracts. Prompted by such pressures, Calpine Corp. recently created its own internal, integrated solution to project development which provides more control and input for a project owner and manager while establishing a solid set of guarantees to non-recourse lenders through a program of warranties and overall insurance coverage. The proof case for Calpine-Construct is the Sumas Project, a 125 MW gas-fired cogeneration plant in Sumas, WA, near the Canadian border. The Sumas project demonstrates how owners, suppliers and contractors, working together on site, can be readily able to solve construction problems.

  11. Is Carbon a Realistic Choice for ITER's Divertor?

    SciTech Connect (OSTI)

    C.H. Skinner; G. Federici

    2005-05-13

    Tritium retention by co-deposition with carbon on the divertor target plate is predicted to limit ITER's DT burning plasma operations (e.g. to about 100 pulses for the worst conditions) before the in-vessel tritium inventory limit, currently set at 350 g, is reached. At this point, ITER will only be able to continue its burning plasma program if technology is available that is capable of rapidly removing large quantities of tritium from the vessel with over 90% efficiency. The removal rate required is four orders of magnitude faster than that demonstrated in current tokamaks. Eighteen years after the observation of co-deposition on JET and TFTR, such technology is nowhere in sight. The inexorable conclusion is that either a major initiative in tritium removal should be funded or that research priorities for ITER should focus on metal alternatives.

  12. Diamond neutral particle spectrometer for fusion reactor ITER

    SciTech Connect (OSTI)

    Krasilnikov, V.; Amosov, V.; Kaschuck, Yu.; Skopintsev, D. [Institution PROJECT CENTER ITER, 1, Akademik Kurchatov Sq., Moscow (Russian Federation)

    2014-08-21

    A compact diamond neutral particle spectrometer with digital signal processing has been developed for fast charge-exchange atoms and neutrons measurements at ITER fusion reactor conditions. This spectrometer will play supplementary role for Neutral Particle Analyzer providing 10 ms time and 30 keV energy resolutions for fast particle spectra in non-tritium ITER phase. These data will also be implemented for independent studies of fast ions distribution function evolution in various plasma scenarios with the formation of a single fraction of high-energy ions. In tritium ITER phase the DNPS will measure 14 MeV neutrons spectra. The spectrometer with digital signal processing can operate at peak counting rates reaching a value of 10{sup 6} cps. Diamond neutral particle spectrometer is applicable to future fusion reactors due to its high radiation hardness, fast response and high energy resolution.

  13. Description of the prototype diagnostic residual gas analyzer for ITER

    SciTech Connect (OSTI)

    Younkin, T. R.; Biewer, T. M.; Klepper, C. C.; Marcus, C.

    2014-11-15

    The diagnostic residual gas analyzer (DRGA) system to be used during ITER tokamak operation is being designed at Oak Ridge National Laboratory to measure fuel ratios (deuterium and tritium), fusion ash (helium), and impurities in the plasma. The eventual purpose of this instrument is for machine protection, basic control, and physics on ITER. Prototyping is ongoing to optimize the hardware setup and measurement capabilities. The DRGA prototype is comprised of a vacuum system and measurement technologies that will overlap to meet ITER measurement requirements. Three technologies included in this diagnostic are a quadrupole mass spectrometer, an ion trap mass spectrometer, and an optical penning gauge that are designed to document relative and absolute gas concentrations.

  14. The influence of an ITER-like wall on disruptions at JET

    SciTech Connect (OSTI)

    Vries, P. C. de Hogeweij, G. M. D.; Baruzzo, M.; Murari, A.; Jachmich, S.; Lomas, P. J.; Matthews, G. F.; Pütterich, T.; Vega, J.; Collaboration: JET-EFDA Contributors

    2014-05-15

    In order to preserve the integrity of large tokamaks such as ITER, the number of disruptions has to be limited. JET has operated previously with a low frequency of disruptions (i.e., disruption rate) of 3.4% [P. C. de Vries et al., Nucl. Fusion 51, 053018 (2011)]. The start of operations with the new full-metal ITER-like wall at JET showed a marked rise in the disruption rate to 10%. A full survey was carried out to identify the root causes, the chain-of-events and classifying each disruption, similar to a previous analysis for carbon-wall operations. It showed the improvements made to avoid various disruption classes, but also indicated those disruption types responsible for the enhanced disruption rate. The latter can be mainly attributed to disruptions due to too high core radiation but also due to density control issues and error field locked modes. Detailed technical and physics understanding of disruption causes is essential for devising optimized strategies to avoid or mitigate these events.

  15. Innovative Office Lighting System with Integrated Spectrally...

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

    an innovative LED office lighting system solution that integrates light delivery, optics, and controls for energy efficiency and occupant health and well-being. The office...

  16. Polymer solutions

    SciTech Connect (OSTI)

    Krawczyk, Gerhard Erich; Miller, Kevin Michael

    2011-07-26

    There is provided a method of making a polymer solution comprising polymerizing one or more monomer in a solvent, wherein said monomer comprises one or more ethylenically unsaturated monomer that is a multi-functional Michael donor, and wherein said solvent comprises 40% or more by weight, based on the weight of said solvent, one or more multi-functional Michael donor.

  17. ON THE C-INTEGRAL BENEDETTO BONGIORNO

    E-Print Network [OSTI]

    Talvila, Erik

    ON THE C-INTEGRAL BENEDETTO BONGIORNO Let F : [a, b] R be a differentiable function and let f, the problem of primitives was solved by A. Denjoy with an integration process (called totalization) that includes the Lebesgue integral and the Riemann improper integral. Two years later, a second solution

  18. ON THE C-INTEGRAL BENEDETTO BONGIORNO

    E-Print Network [OSTI]

    Talvila, Erik

    ON THE C-INTEGRAL BENEDETTO BONGIORNO Let F : [a; b] ! R be a di#11;erentiable function and let f, the problem of primitives was solved by A. Denjoy with an integration process (called totalization) that includes the Lebesgue integral and the Riemann improper integral. Two years later, a second solution

  19. ISIS++Reference Guide (Iterative Scalable Implicit Solver in C++) Version 1.1

    SciTech Connect (OSTI)

    Alan B. Williams; Benjamin A. Allan; Kyran D. Mish; Robert L. Clay

    1999-04-01

    ISIS++ (Iterative Scalable Implicit Solver in C++) Version 1.1 is a portable, object-oriented framework for solving sparse linear systems of equations. It includes a collection of Krylov solution methods and preconditioners, as well as both uni-processor (serial) and multi-processor (scalable) matrix and vector classes. Though it was developed to solve systems of equations originating from large-scale, 3-D, finite element analyses, it has application in many other fields. This document supersedes the ISIS++ V1.0 Reference Guide, defines the V1. 1 interface specification, and includes the necessary instructions for building and running ISIS++ v 1.1 on Unix platforms. The interface is presented in annotated header format, along with background on design and implementation considerations. A finite difference modeling example problem is included to demonstrate the overall setup and use.

  20. Steady-state solution methods for open quantum optical systems

    E-Print Network [OSTI]

    P. D. Nation

    2015-04-25

    We discuss the numerical solution methods available when solving for the steady-state density matrix of a time-independent open quantum optical system, where the system operators are expressed in a suitable basis representation as sparse matrices. In particular, we focus on the difficulties posed by the non-Hermitian structure of the Lindblad super operator, and the numerical techniques designed to mitigate these pitfalls. In addition, we introduce a doubly iterative inverse-power method that can give reduced memory and runtime requirements in situations where other iterative methods are limited due to poor bandwidth and profile reduction. The relevant methods are demonstrated on several prototypical quantum optical systems where it is found that iterative methods based on iLU factorization using reverse Cuthill-Mckee ordering tend to outperform other solution techniques in terms of both memory consumption and runtime as the size of the underlying Hilbert space increases. For eigenvalue solving, Krylov iterations using the stabilized bi-conjugate gradient method outperform generalized minimal residual methods. In contrast, minimal residual methods work best for solvers based on direct LU decomposition. This work serves as a guide for solving the steady-state density matrix of an arbitrary quantum optical system, and points to several avenues of future research that will extend the applicability of these classical algorithms in absence of a quantum computer.

  1. Iterative finite-difference solution analysis of acoustic wave equation in the Laplace-Fourier domain

    E-Print Network [OSTI]

    Um, E.S.

    2013-01-01

    mod- eling of the acoustic wave equation: Geophysics, 39,and C. Shin, 2011, 3D acoustic wave form inversion in thesolution analysis of acoustic wave equation in the Laplace-

  2. An Iterative Aggregation/Disaggregation Approach for the Solution of a Mixed Integer Nonlinear Oilfield

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    to be installed/drilled, as well as the drilling schedule for the wells over the planning horizon. Continuous a number of potential locations for wells (W) to be drilled. Production Platform Well Platform Well into the formulation. Discrete decisions include the selection of production platforms, well platforms and wells

  3. ILP and Iterative LP Solutions for Peak and Average Power Optimization in HLS

    E-Print Network [OSTI]

    Ramanujam, J. "Ram"

    . Ramanujam2 1 Electrical Engineering Dept., Assiut University, Egypt 2 Electrical and Computer Engineering

  4. Iterative Solution of Transonic Flows over Airfoils and Wings, Including Flows at Mach 1 ,

    E-Print Network [OSTI]

    Jameson, Antony

    for a yawed wing in [1], favor operation at low supersonic speeds in the range from Mach 1 to 1.3 (a regime of flows over airplane wings, including the case of flight at Mach 1. The mathematical difficulties at fairly low supersonic Mach numbers over efficient aerodynamic shapes, we may reasonably suppose

  5. Hierarchical Iterative Algorithm for a Coupled Constrained OSNR Nash Game

    E-Print Network [OSTI]

    Pavel, Lacra

    Hierarchical Iterative Algorithm for a Coupled Constrained OSNR Nash Game Lacra Pavel Department. A Nash game is formulated between channels with channel utility related to maximizing channel optical the coupled Nash game into a lower-level Nash game with no coupled constraints, and a higher-level link

  6. Fusion project decision delayed ITER -NUCLEAR FUSION PROJECT

    E-Print Network [OSTI]

    before a commercial reactor is built A decision on where to site the world's first big nuclear fusion-free energy - but the reactor will take 10 years to build. Pros and cons Member countries of the International research facility and a more moderate climate. Iter consortium European Union United States Russia China

  7. Fast Iterative Methods The Incompressible Navier-Stokes Equations

    E-Print Network [OSTI]

    Vuik, Kees

    , Pakistan Institute of Engineering and Applied Sciences, Quaid-i-Azam University Islamabad, Pakistan geboren te Kohat, Pakistan. #12;Dit proefschrift is goedgekeurd door de promotor: Prof.dr.ir. C. Vuik Commission (HEC) Pakistan. I thank them sincerely for their support. Fast Iterative Methods

  8. Visions for Data Management and Remote Collaboration on ITER

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

    I P 0.9 MA P IN 2.3 MW H98 1.3 M. Greenwald, et al., APS-DPP November 2007 C-Mod Data Helps Break Covariance Between EFF and nn G Makes Extrapolation To ITER More...

  9. Fast non-iterative methods for defect identification

    E-Print Network [OSTI]

    Guzina, Bojan

    Fast non-iterative methods for defect identification Marc Bonnet -- Bojan B. Guzina -- Nicolas and topology by means of the concept of topological sensitivity. This approach leads to the fast computation is obtained by using fast multipole accelerated BEMs. Possibilities afforded by this approach are demon

  10. Wireless Multicasting via Iterative Optimization Lihua Wan and Jie Luo

    E-Print Network [OSTI]

    Luo, J. Rockey

    Wireless Multicasting via Iterative Optimization Lihua Wan and Jie Luo Electrical & Computer}@engr.colostate.edu Abstract-- A class of wireless multicast utility optimization problems are considered. Assume network in a wireless network can be characterized using a configuration graph. Network layer utility optimization can

  11. The ins and outs of iteration in Mezzo Armal Guneau

    E-Print Network [OSTI]

    study. 2. Algebraic data structures Thanks to algebraic data types, it is easy to define list- and tree and invokes a client-supplied function at every node: val iter: [a, s: perm] (f: ( a | s) -> bool, t: tree a | s) -> bool The function f has access to one tree element at a time: it receives a permission

  12. Bold Step by the World to Fusion Energy: ITER

    E-Print Network [OSTI]

    Bold Step by the World to Fusion Energy: ITER Gerald A. Navratil 2006 Con Edison Lecture Fu electrically charged particles at very high energy: Threshold temperature for most reactive fusion reaction' FUSION PLASMA REGIME. · US WORKING WITH INTERNATIONAL COMMUNITY IS NOW READY TO BUILD THE WORLDS FIRST

  13. ITER HEAT REMOVAL SYSTEM SYSTEM & PROCESS CONTROL DESIGN

    E-Print Network [OSTI]

    Raffray, A. René

    in-vessel component cooling systems malfunction. Therefore, special design criteria are requestedITER HEAT REMOVAL SYSTEM SYSTEM & PROCESS CONTROL DESIGN Y. Hoshi 1 , Y. Kataoka 2 , V. Tanchuk 1 the vacuum vessel cooling system has a safety role of providing the ultimate decay heat removal system ,when

  14. ASSESSMENT OF THE DCLL TBM THERMOSTRUCTURAL RESPONSE BASED ON ITER DESIGN CRITERIA

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    ASSESSMENT OF THE DCLL TBM THERMOSTRUCTURAL RESPONSE BASED ON ITER DESIGN CRITERIA Shahram Sharafat development for operation in the ITER reactor. The DCLL TBM must satisfy the Structural Design Criteria rules (SDC-IC: Structural Design Criteria In-vessel Components 3 ). The ITER structural design criteria

  15. ITER Export Control Awareness Information UT-B Contracts Div. Page 1 of 8

    E-Print Network [OSTI]

    ITER Export Control Awareness Information UT-B Contracts Div. June 2012 Page 1 of 8 Iter-export-control-Inform-ext-jun12.pdf ITER EXPORT CONTROL AWARENESS INFORMATION (June 2012) Commercial Vendors, Universities be aware of the export control requirements associated with exporting facilities, systems, subsystems

  16. Analyzing Social Network Structures in the Iterated Prisoner's Dilemma with Choice and Refusal

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Analyzing Social Network Structures in the Iterated Prisoner's Dilemma with Choice and Refusal Mark of Computer Sciences Technical Report CS-TR-94-1259 Abstract The Iterated Prisoner's Dilemma with Choice and Refusal (IPD/CR) 44] is an ex- tension of the Iterated Prisoner's Dilemma with evolution that allows

  17. A Psychologically-Inspired Agent for Iterative Prisoner's Dilemma Rawad Al-Haddad and Gita Sukthankar

    E-Print Network [OSTI]

    Sukthankar, Gita Reese

    A Psychologically-Inspired Agent for Iterative Prisoner's Dilemma Rawad Al-Haddad and Gita, a psychologically-inspired model for an Iterative Prisoner's dilemma (IPD) agent is proposed. This model is inspired. cooperative behavior. Introduction The Iterated Prisoner's dilemma (IPD) has been widely used as a model

  18. Exhibit 9RDF Technical Data -ITER UT-B Contracts Div Page 1 of 5

    E-Print Network [OSTI]

    , flow charts, formulae, and related material that would enable the computer program to be produced", as used in this clause, means members of the ITER Organization who are parties to the Agreement on the Establishment of the ITER International Fusion Energy Organization for the Joint Implementation of the ITER

  19. Service management solutions To support your IT objectives

    E-Print Network [OSTI]

    IT integrate incident, problem, change and release management. Two key components of these solutions -- IBMService management solutions To support your IT objectives management tasks. Consequently, service levels and the effectiveness of asset management suffer. Without accurate, complete, reliable data from

  20. EUROfusion effort in code development for integrated modelling

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    of electric power by DEMO by 2050: importance of IM EUROfusion (29 EU Research Units (RUs)): - ITER Physics, ...) Mission 2: Heat Exhaust System (detachment control, PFC, divertor/SOL modelling, ...) Mission 8EUROfusion effort in code development for integrated modelling Presented by Irina Voitsekhovitch

  1. MOMDPs: a Solution for Modelling Adaptive Management Problems Iadine Chad`es and Josie Carwardine and Tara G. Martin

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - gered species under global change, yet adaptive management problems suffer from a poor suite of solutionMOMDPs: a Solution for Modelling Adaptive Management Problems Iadine Chad`es and Josie Carwardine and natural resource management, adaptive management is an iterative process of improving management

  2. Box Integrals

    E-Print Network [OSTI]

    Bailey, David H.; Borwein, Jonathan M.; Crandall, Richard E.

    2006-01-01

    Box integrals D.H. Bailey ? J.M. Borwein † April 3,Abstract. By a “box integral” we mean here an expectation |r· dr n . The study of box integrals leads one naturally into

  3. Building America Technology Solutions Case Study: Sealed Crawled...

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

    Case Study: Sealed Crawled Spaces with Integrated Whole-House Ventilation in a Cold Climate Building America Technology Solutions Case Study: Sealed Crawled Spaces with...

  4. TRIPLE INTEGRALS Studying triple integrals

    E-Print Network [OSTI]

    Knopf, Dan

    TRIPLE INTEGRALS Studying triple integrals of functions of three variables is a natural step up from the two variable case. It's a very important one for applications. Now the domain of integration in 3- space as double integrals, which in turn were expressed as repeated integrals. As a result

  5. An iterative learning controller for nonholonomic mobile robots

    SciTech Connect (OSTI)

    Oriolo, G.; Panzieri, S.; Ulivi, G.

    1998-09-01

    The authors present an iterative learning controller that applies to nonholonomic mobile robots, as well as other systems that can be put in chained form. The learning algorithm exploits the fact that chained-form. The learning algorithm exploits the fact that chained-form systems are linear under piecewise-constant inputs. The proposed control scheme requires the execution of a small number of experiments to drive the system to the desired state in finite time, with nice convergence and robustness properties with respect to modeling inaccuracies as well as disturbances. To avoid the necessity of exactly reinitializing the system at each iteration, the basic method is modified so as to obtain a cyclic controller, by which the system is cyclically steered through an arbitrary sequence of states. As a case study, a carlike mobile robot is considered. Both simulation and experimental results are reported to show the performance of the method.

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

    E-Print Network [OSTI]

    Haimovich, Hernan

    2010-01-01

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

  7. Linear response strength functions with iterative Arnoldi diagonalization

    E-Print Network [OSTI]

    J. Toivanen; B. G. Carlsson; J. Dobaczewski; K. Mizuyama; R. R. Rodriguez-Guzman; P. Toivanen; P. Vesely

    2009-12-16

    We report on an implementation of a new method to calculate RPA strength functions with iterative non-hermitian Arnoldi diagonalization method, which does not explicitly calculate and store the RPA matrix. We discuss the treatment of spurious modes, numerical stability, and how the method scales as the used model space is enlarged. We perform the particle-hole RPA benchmark calculations for double magic nucleus 132Sn and compare the resulting electromagnetic strength functions against those obtained within the standard RPA.

  8. A unified evaluation of iterative projection algorithms for phase retrieval

    E-Print Network [OSTI]

    Marchesini, S

    2006-01-01

    Iterative projection algorithms are successfully being used as a substitute of lenses to recombine, numerically rather than optically, light scattered by illuminated objects. Images obtained computationally allow aberration-free diffraction-limited imaging and allow new types of imaging using radiation for which no lenses exist. The challenge of this imaging technique is transfered from the lenses to the algorithms. We evaluate these new computational ``instruments'' developed for the phase retrieval problem, and discuss acceleration strategies.

  9. FOHI-D: An iterative Hirshfeld procedure including atomic dipoles

    SciTech Connect (OSTI)

    Geldof, D.; Blockhuys, F.; Van Alsenoy, C. [Department of Chemistry, University of Antwerp, Universiteitsplein 1, B2610 Antwerp (Belgium)] [Department of Chemistry, University of Antwerp, Universiteitsplein 1, B2610 Antwerp (Belgium); Krishtal, A. [Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Straße, D-67663 Kaiserslautern (Germany)] [Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Straße, D-67663 Kaiserslautern (Germany)

    2014-04-14

    In this work, a new partitioning method based on the FOHI method (fractional occupation Hirshfeld-I method) will be discussed. The new FOHI-D method uses an iterative scheme in which both the atomic charge and atomic dipole are calculated self-consistently. In order to induce the dipole moment on the atom, an electric field is applied during the atomic SCF calculations. Based on two sets of molecules, the atomic charge and intrinsic atomic dipole moment of hydrogen and chlorine atoms are compared using the iterative Hirshfeld (HI) method, the iterative Stockholder atoms (ISA) method, the FOHI method, and the FOHI-D method. The results obtained are further analyzed as a function of the group electronegativity of Boyd et al. [J. Am. Chem. Soc. 110, 4182 (1988); Boyd et al., J. Am. Chem. Soc. 114, 1652 (1992)] and De Proft et al. [J. Phys. Chem. 97, 1826 (1993)]. The molecular electrostatic potential (ESP) based on the HI, ISA, FOHI, and FOHI-D charges is compared with the ab initio ESP. Finally, the effect of adding HI, ISA, FOHI, and FOHI-D atomic dipoles to the multipole expansion as a function of the precision of the ESP is analyzed.

  10. Qualification of the Joints for the ITER Central Solenoid

    SciTech Connect (OSTI)

    Martovetsky, N; Berryhill, A; Kenney, S

    2011-09-01

    The ITER Central Solenoid has 36 interpancake joints, 12 bus joints, and 12 feeder joints in the magnet. The joints are required to have resistance below 4 nOhm at 45 kA at 4.5 K. The US ITER Project Office developed two different types of interpancake joints with some variations in details in order to find a better design, qualify the joints, and establish a fabrication process. We built and tested four samples of the sintered joints and two samples with butt-bonded joints (a total of eight joints). Both designs met the specifications. Results of the joint development, test results, and selection of the baseline design are presented and discussed in the paper. The ITER Central Solenoid (CS) consists of six modules. Each module is composed of six wound hexapancakes and one quadrapancake. The multipancakes are connected electrically and hydraulically by in-line interpancake joints. The joints are located at the outside diameter (OD) of the module. Cable in conduit conductor (CICC) high-current joints are critical elements in the CICC magnets. In addition to low resistivity, the CS joints must fit a space envelope equivalent to the regular conductor cross section and must have low hydraulic impedance and enough structural strength to withstand the hoop and compressive forces during operation, including cycling. This paper is the continuation of the work reported on the intermodule joints.

  11. Modeling Results For the ITER Cryogenic Fore Pump. Final Report

    SciTech Connect (OSTI)

    Pfotenhauer, John M.; Zhang, Dongsheng

    2014-03-31

    A numerical model characterizing the operation of a cryogenic fore-pump (CFP) for ITER has been developed at the University of Wisconsin – Madison during the period from March 15, 2011 through June 30, 2014. The purpose of the ITER-CFP is to separate hydrogen isotopes from helium gas, both making up the exhaust components from the ITER reactor. The model explicitly determines the amount of hydrogen that is captured by the supercritical-helium-cooled pump as a function of the inlet temperature of the supercritical helium, its flow rate, and the inlet conditions of the hydrogen gas flow. Furthermore the model computes the location and amount of hydrogen captured in the pump as a function of time. Throughout the model’s development, and as a calibration check for its results, it has been extensively compared with the measurements of a CFP prototype tested at Oak Ridge National Lab. The results of the model demonstrate that the quantity of captured hydrogen is very sensitive to the inlet temperature of the helium coolant on the outside of the cryopump. Furthermore, the model can be utilized to refine those tests, and suggests methods that could be incorporated in the testing to enhance the usefulness of the measured data.

  12. Progress and present status of ITER cryoline system

    SciTech Connect (OSTI)

    Badgujar, S.; Bonneton, M.; Chalifour, M.; Forgeas, A.; Serio, L. [ITER Organization, Route de Vinon sur Verdon, 13115 St. Paul lez Durance (France); Sarkar, B.; Shah, N. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

    2014-01-29

    The cryoline system at ITER forms a very complex network localized inside the Tokamak building, on a dedicated plant bridge and in cryoplant areas. The cooling power produced in the cryoplant is distributed via these lines with a total length of about 3.7 km and interconnecting all the cold boxes of the cryogenic system as well as the cold boxes of various clients (magnets, cryopumps and thermal shield). Distinct layouts and polygonal geometry, nuclear safety and confinement requirements, difficult installation and in-service inspection/repair demand very high reliability and availability for the cryolines. The finalization of the building-embedded plates for supporting the lines, before the detailed design, has made this project technologically more challenging. The conceptual design phase has been completed and procurement arrangements have been signed with India, responsible for providing the system of cryolines and warm lines to ITER, as in kind contribution. The prototype test for the design and performance validation has been planned on a representative cryoline section. After describing the basic features and general layout of the ITER cryolines, the paper presents key design requirements, conceptual design approach, progress and status of the cryolines project as well as challenges to build such a complex cryoline system.

  13. http://eprint.iacr.org/2006/384.pdf Design and Analysis of a Hash Ring-iterative Structure*

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    http://eprint.iacr.org/2006/384.pdf 1 Design and Analysis of a Hash Ring-iterative Structure, and SHA-1 [1] for example adopt the Merkle-Damgård (MD) iterative structure [2][3] . The design principle function, but also on a collision-free iteration structure. 2 Design of Hash Ring-iterative Structures 2

  14. ITER Generic Diagnostic Upper Port Plug Nuclear Heating and Personnel Dose Rate Assesment

    SciTech Connect (OSTI)

    Russell E. Feder and Mahmoud Z. Youssef

    2009-01-28

    Neutronics analysis to find nuclear heating rates and personnel dose rates were conducted in support of the integration of diagnostics in to the ITER Upper Port Plugs. Simplified shielding models of the Visible-Infrared diagnostic and of a large aperture diagnostic were incorporated in to the ITER global CAD model. Results for these systems are representative of typical designs with maximum shielding and a small aperture (Vis-IR) and minimal shielding with a large aperture. The neutronics discrete-ordinates code ATTILA® and SEVERIAN® (the ATTILA parallel processing version) was used. Material properties and the 500 MW D-T volume source were taken from the ITER “Brand Model” MCNP benchmark model. A biased quadrature set equivelant to Sn=32 and a scattering degree of Pn=3 were used along with a 46-neutron and 21-gamma FENDL energy subgrouping. Total nuclear heating (neutron plug gamma heating) in the upper port plugs ranged between 380 and 350 kW for the Vis-IR and Large Aperture cases. The Large Aperture model exhibited lower total heating but much higher peak volumetric heating on the upper port plug structure. Personnel dose rates are calculated in a three step process involving a neutron-only transport calculation, the generation of activation volume sources at pre-defined time steps and finally gamma transport analyses are run for selected time steps. ANSI-ANS 6.1.1 1977 Flux-to-Dose conversion factors were used. Dose rates were evaluated for 1 full year of 500 MW DT operation which is comprised of 3000 1800-second pulses. After one year the machine is shut down for maintenance and personnel are permitted to access the diagnostic interspace after 2-weeks if dose rates are below 100 ?Sv/hr. Dose rates in the Visible-IR diagnostic model after one day of shutdown were 130 ?Sv/hr but fell below the limit to 90 ?Sv/hr 2-weeks later. The Large Aperture style shielding model exhibited higher and more persistent dose rates. After 1-day the dose rate was 230 ?Sv/hr but was still at 120 ?Sv/hr 4-weeks later.

  15. Iterative reconstruction using a Monte Carlo based system transfer matrix for dedicated breast positron emission tomography

    SciTech Connect (OSTI)

    Saha, Krishnendu; Straus, Kenneth J.; Glick, Stephen J.; Chen, Yu.

    2014-08-28

    To maximize sensitivity, it is desirable that ring Positron Emission Tomography (PET) systems dedicated for imaging the breast have a small bore. Unfortunately, due to parallax error this causes substantial degradation in spatial resolution for objects near the periphery of the breast. In this work, a framework for computing and incorporating an accurate system matrix into iterative reconstruction is presented in an effort to reduce spatial resolution degradation towards the periphery of the breast. The GATE Monte Carlo Simulation software was utilized to accurately model the system matrix for a breast PET system. A strategy for increasing the count statistics in the system matrix computation and for reducing the system element storage space was used by calculating only a subset of matrix elements and then estimating the rest of the elements by using the geometric symmetry of the cylindrical scanner. To implement this strategy, polar voxel basis functions were used to represent the object, resulting in a block-circulant system matrix. Simulation studies using a breast PET scanner model with ring geometry demonstrated improved contrast at 45% reduced noise level and 1.5 to 3 times resolution performance improvement when compared to MLEM reconstruction using a simple line-integral model. The GATE based system matrix reconstruction technique promises to improve resolution and noise performance and reduce image distortion at FOV periphery compared to line-integral based system matrix reconstruction.

  16. The Lamb-Bateman integral equation and the fractional derivatives

    E-Print Network [OSTI]

    D. Babusci; G. Dattoli; D. Sacchetti

    2010-06-08

    The Lamb-Bateman integral equation was introduced to study the solitary wave diffraction and its solution was written in terms of an integral transform. We prove that it is essentially the Abel integral equation and its solution can be obtained using the formalism of fractional calculus.

  17. Grid Integration

    SciTech Connect (OSTI)

    Not Available

    2008-09-01

    Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its grid integration subprogram.

  18. Electromagnetic Scattering for Dielectrics: Iterative Methods For Solving Boundary Integral Equations 3

    E-Print Network [OSTI]

    New York at Stoney Brook, State University of

    accelerator design, radar, seismic exploration, antenna design, and the spacing of devices and wires

  19. An iterative method for solving Fredholm integral equations of the first kind

    E-Print Network [OSTI]

    notes: Professor Alexander G. Ramm is an author of more than 580 papers, 2 patents, 12 monographs Visiting Professor supported by the Royal Academy of Engineering, invited 1 #12;plenary speaker

  20. Overview of ASDEX Upgrade Results Development of integrated operating scenarios for ITER

    E-Print Network [OSTI]

    ; HUT Helsinki, Espoo, Finland; VTT Technical Research Centre, Espoo, Finland; Plasma Physics Laboratory

  1. Identities for the fundamental solution of thin plate bending problems and the nonuniqueness of the hypersingular BIE solution

    E-Print Network [OSTI]

    Liu, Yijun

    for the fundamental solution of thin plate bending problems are presented in this paper. These identities canIdentities for the fundamental solution of thin plate bending problems and the nonuniqueness bending Boundary integral equation Boundary element method a b s t r a c t Four integral identities

  2. Integrated Architectural Concepts 

    E-Print Network [OSTI]

    Schossig, E.

    2008-01-01

    and questions on sustainability and the optimisation of resources, leading to the development of an intelligent and economised, architectural solution amid the border area between architecture and technology, is of great importance to Elmar Schossig?s... Richartzstrasse 10 50667 Cologne 00 49 22 1/ 92 58 21 - 0 info@gatermann-schossig.de Integrated Architectural Concepts Next to the aesthetic and functional aspects, an ecological approach which also pays great attention to energetical concerns...

  3. Global ICRF system designs for ITER and TPX

    SciTech Connect (OSTI)

    Goulding, R.H.; Hoffman, D.J.; Ryan, P.M.; Durodie, F.

    1995-09-01

    The design of feed networks for ICRF antenna arrays on ITER and TPX are discussed. Features which are present in one or both of the designs include distribution of power to several straps from a single generator, the capability to vary phases of the currents on antenna elements rapidly without the need to rematch, and passive elements which present a nearly constant load to the generators during ELM induced loading transients of a factor of I0 or more. The FDAC (Feedline/Decoupler/Antenna Calculator) network modeling code is described, which allows convenient modeling of the electrical performance of nearly arbitrary ICRF feed networks.

  4. Progress on Gyrotrons for ITER and Future Fusion Reactors

    SciTech Connect (OSTI)

    Thumm, Manfred K. [Forschungszentrum Karlsruhe, Association EURATOM-FZK, Institut fuer Hochleistungsimpuls- und Mikrowettentechnik, D-76021 Karlsruhe (Germany) and Universitaet Karlsruhe, Institut fuer Hochfrequenztechnik und Elektronik, D-76131 Karlsruhe (Germany)

    2009-11-26

    The prototype of the Japan 170 GHz ITER gyrotron holds the energy and efficiency world record of 2.88 GJ (0.8 MW, 3600 s, 57%) with 55% efficiency at 1 MW, 800 s, whereas the Russian 170 GHz ITER prototype tube achieved 0.83 MW with a pulse duration of 203 s at 48% efficiency and 1 MW at 116 s and 52%. The record parameters of the European megawatt-class 140 GHz gyrotron for the Stellarator Wendelstein W7-X are: 0.92 MW output power at 1800 s pulse duration, almost 45% efficiency and 97.5% Gaussian mode purity. All these gyrotrons employ a cylindrical cavity, a quasi-optical output coupler, a synthetic diamond window and a single-stage depressed collector (SDC) for energy recovery. In coaxial cavities the existence of the longitudinally corrugated inner conductor reduces the problems of mode competition and limiting current, thus allowing one to use even higher order modes with lower Ohmic attenuation than in cylindrical cavities. Synthetic diamond windows with a transmission capability of 2 MW, continuous wave (CW) are feasible. In order to keep the number of the required gyrotrons and magnets as low as possible, to reduce the costs of the ITER 26 MW, 170 GHz ECRH system and to allow compact upper launchers for plasma stabilization, 2 MW mm-wave power per gyrotron tube is desirable. The FZK pre-prototype tube for an EU 170 GHz, 2 MW ITER gyrotron has achieved 1.8 MW at 28% efficiency (without depressed collector). Design studies for a 4 MW 170 GHz coaxial-cavity gyrotron with two synthetic diamond output windows and two 2 MW mm-wave output beams for future fusion reactors are currently being performed at FZK. The availability of sources with fast frequency tunability (several GHz s{sup -1}, tuning in 1.5-2.5% steps for about ten different frequencies) would permit the use of a simple, fixed, non-steerable mirror antenna for local current drive (ECCD) experiments and plasma stabilization. GYCOM in Russia develops in collaboration with IPP Garching and FZK an industrial, frequency-tunable 1 MW gyrotron with almost 50% efficiency (SDC) for ASDEX Upgrade. A four-frequency tube (105, 117, 127 and 140 GHz) delivered in 10 s pulses 0.7 MW at 105 GHz and 0.9 MW at 140 GHz. After the installation of a diamond Brewster window, the GYCOM group will operate this gyrotron also at the two intermediate frequencies.

  5. In-vessel tritium retention and removal in ITER

    SciTech Connect (OSTI)

    Federici, G.; Anderl, R.A.; Andrew, P.

    1998-06-01

    The International Thermonuclear Experimental Reactor (ITER) is envisioned to be the next major step in the world`s fusion program from the present generation of tokamaks and is designed to study fusion plasmas with a reactor relevant range of plasma parameters. During normal operation, it is expected that a fraction of the unburned tritium, that is used to routinely fuel the discharge, will be retained together with deuterium on the surfaces and in the bulk of the plasma facing materials (PFMs) surrounding the core and divertor plasma. The understanding of he basic retention mechanisms (physical and chemical) involved and their dependence upon plasma parameters and other relevant operation conditions is necessary for the accurate prediction of the amount of tritium retained at any given time in the ITER torus. Accurate estimates are essential to assess the radiological hazards associated with routine operation and with potential accident scenarios which may lead to mobilization of tritium that is not tenaciously held. Estimates are needed to establish the detritiation requirements for coolant water, to determine the plasma fueling and tritium supply requirements, and to establish the needed frequency and the procedures for tritium recovery and clean-up. The organization of this paper is as follows. Section 2 provides an overview of the design and operating conditions of the main components which define the plasma boundary of ITER. Section 3 reviews the erosion database and the results of recent relevant experiments conducted both in laboratory facilities and in tokamaks. These data provide the experimental basis and serve as an important benchmark for both model development (discussed in Section 4) and calculations (discussed in Section 5) that are required to predict tritium inventory build-up in ITER. Section 6 emphasizes the need to develop and test methods to remove the tritium from the codeposited C-based films and reviews the status and the prospects of the most attractive techniques. Section 7 identifies the unresolved issues and provides some recommendations on potential R and D avenues for their resolution. Finally, a summary is provided in Section 8.

  6. Network Structures between Strategies in Iterated Prisoners' Dilemma Games

    E-Print Network [OSTI]

    Kim, Young Jin; Son, Seung-Woo

    2014-01-01

    We use replicator dynamics to study an iterated prisoners' dilemma game with memory. In this study, we investigate the characteristics of all 32 possible strategies with a single-step memory by observing the results when each strategy encounters another one. Based on these results, we define similarity measures between the 32 strategies and perform a network analysis of the relationship between the strategies by constructing a strategies network. Interestingly, we find that a win-lose circulation, like rock-paper-scissors, exists between strategies and that the circulation results from one unusual strategy.

  7. U.S. ITER | Princeton Plasma Physics Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA| ReactionSite Map Site Map HomePolicy‹AboutITER

  8. Project Manager Ned Sauthoff Talks About US ITER

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptions |(Conference) | SciTechProjectITER Project Manager Ned

  9. Princeton Plasma Physics Lab - U.S. ITER

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-Rich Matrices in HydrothermalMagneticAiter U.S. ITER en BBC

  10. US ITER is a strong contributor in plan to enhance international...

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

    to housing the extensive diagnostic systems that will be installed on the ITER tokamak. (Photo by Elle StarkmanPPPL Office of Communications) PPPL's Russell Feder, left,...

  11. Page 1IDM UID: QZZERG 2015, ITER Organization TRANSP Users' Group Meeting, 23rd March 2015

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    ­ Supports Plasma Operations and Plasma Research ­ Extensive set of "Use Cases" requiring broad spectrum and Plasma Research ­ Contributed and validated by ITER Members · Workflow Engine ­ To orchestrate execution

  12. Two-pulse solutions in the fifth-order KdV equation : rigorous theory and numerical approximations

    E-Print Network [OSTI]

    Marina Chugunova; Dmitry Pelinovsky

    2006-05-23

    We revisit existence and stability of two-pulse solutions in the fifth-order Korteweg--de Vries (KdV) equation with two new results. First, we modify the Petviashvili method of successive iterations for numerical (spectral) approximations of pulses and prove convergence of iterations in a neighborhood of two-pulse solutions. Second, we prove structural stability of embedded eigenvalues of negative Krein signature in a linearized KdV equation. Combined with stability analysis in Pontryagin spaces, this result completes the proof of spectral stability of the corresponding two-pulse solutions. Eigenvalues of the linearized problem are approximated numerically in exponentially weighted spaces where embedded eigenvalues are isolated from the continuous spectrum. Approximations of eigenvalues and full numerical simulations of the fifth-order KdV equation confirm stability of two-pulse solutions related to the minima of the effective interaction potential and instability of two-pulse solutions related to the maxima points.

  13. Tungsten dust impact on ITER-like plasma edge

    SciTech Connect (OSTI)

    Smirnov, R. D. Krasheninnikov, S. I.; Pigarov, A. Yu.; Rognlien, T. D.

    2015-01-15

    The impact of tungsten dust originating from divertor plates on the performance of edge plasma in ITER-like discharge is evaluated using computer modeling with the coupled dust-plasma transport code DUSTT-UEDGE. Different dust injection parameters, including dust size and mass injection rates, are surveyed. It is found that tungsten dust injection with rates as low as a few mg/s can lead to dangerously high tungsten impurity concentrations in the plasma core. Dust injections with rates of a few tens of mg/s are shown to have a significant effect on edge plasma parameters and dynamics in ITER scale tokamaks. The large impact of certain phenomena, such as dust shielding by an ablation cloud and the thermal force on tungsten ions, on dust/impurity transport in edge plasma and consequently on core tungsten contamination level is demonstrated. It is also found that high-Z impurities provided by dust can induce macroscopic self-sustained plasma oscillations in plasma edge leading to large temporal variations of edge plasma parameters and heat load to divertor target plates.

  14. Chevron beam dump for ITER edge Thomson scattering system

    SciTech Connect (OSTI)

    Yatsuka, E.; Hatae, T.; Bassan, M.; Itami, K. [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193 (Japan)] [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193 (Japan); Vayakis, G. [ITER Organization, 13115 St Paul Lez Durance Cedex (France)] [ITER Organization, 13115 St Paul Lez Durance Cedex (France)

    2013-10-15

    This paper contains the design of the beam dump for the ITER edge Thomson scattering system and mainly concerns its lifetime under the harsh thermal and electromagnetic loads as well as tight space allocation. The lifetime was estimated from the multi-pulse laser-induced damage threshold. In order to extend its lifetime, the structure of the beam dump was optimized. A number of bent sheets aligned parallel in the beam dump form a shape called a chevron which enables it to avoid the concentration of the incident laser pulse energy. The chevron beam dump is expected to withstand thermal loads due to nuclear heating, radiation from the plasma, and numerous incident laser pulses throughout the entire ITER project with a reasonable margin for the peak factor of the beam profile. Structural analysis was also carried out in case of electromagnetic loads during a disruption. Moreover, detailed issues for more accurate assessments of the beam dump's lifetime are clarified. Variation of the bi-directional reflection distribution function (BRDF) due to erosion by or contamination of neutral particles derived from the plasma is one of the most critical issues that needs to be resolved. In this paper, the BRDF was assumed, and the total amount of stray light and the absorbed laser energy profile on the beam dump were evaluated.

  15. Iterative image-domain decomposition for dual-energy CT

    SciTech Connect (OSTI)

    Niu, Tianye; Dong, Xue; Petrongolo, Michael; Zhu, Lei

    2014-04-15

    Purpose: Dual energy CT (DECT) imaging plays an important role in advanced imaging applications due to its capability of material decomposition. Direct decomposition via matrix inversion suffers from significant degradation of image signal-to-noise ratios, which reduces clinical values of DECT. Existing denoising algorithms achieve suboptimal performance since they suppress image noise either before or after the decomposition and do not fully explore the noise statistical properties of the decomposition process. In this work, the authors propose an iterative image-domain decomposition method for noise suppression in DECT, using the full variance-covariance matrix of the decomposed images. Methods: The proposed algorithm is formulated in the form of least-square estimation with smoothness regularization. Based on the design principles of a best linear unbiased estimator, the authors include the inverse of the estimated variance-covariance matrix of the decomposed images as the penalty weight in the least-square term. The regularization term enforces the image smoothness by calculating the square sum of neighboring pixel value differences. To retain the boundary sharpness of the decomposed images, the authors detect the edges in the CT images before decomposition. These edge pixels have small weights in the calculation of the regularization term. Distinct from the existing denoising algorithms applied on the images before or after decomposition, the method has an iterative process for noise suppression, with decomposition performed in each iteration. The authors implement the proposed algorithm using a standard conjugate gradient algorithm. The method performance is evaluated using an evaluation phantom (Catphan©600) and an anthropomorphic head phantom. The results are compared with those generated using direct matrix inversion with no noise suppression, a denoising method applied on the decomposed images, and an existing algorithm with similar formulation as the proposed method but with an edge-preserving regularization term. Results: On the Catphan phantom, the method maintains the same spatial resolution on the decomposed images as that of the CT images before decomposition (8 pairs/cm) while significantly reducing their noise standard deviation. Compared to that obtained by the direct matrix inversion, the noise standard deviation in the images decomposed by the proposed algorithm is reduced by over 98%. Without considering the noise correlation properties in the formulation, the denoising scheme degrades the spatial resolution to 6 pairs/cm for the same level of noise suppression. Compared to the edge-preserving algorithm, the method achieves better low-contrast detectability. A quantitative study is performed on the contrast-rod slice of Catphan phantom. The proposed method achieves lower electron density measurement error as compared to that by the direct matrix inversion, and significantly reduces the error variation by over 97%. On the head phantom, the method reduces the noise standard deviation of decomposed images by over 97% without blurring the sinus structures. Conclusions: The authors propose an iterative image-domain decomposition method for DECT. The method combines noise suppression and material decomposition into an iterative process and achieves both goals simultaneously. By exploring the full variance-covariance properties of the decomposed images and utilizing the edge predetection, the proposed algorithm shows superior performance on noise suppression with high image spatial resolution and low-contrast detectability.

  16. Insolation integrator

    DOE Patents [OSTI]

    Dougherty, John J. (Norristown, PA); Rudge, George T. (Lansdale, PA)

    1980-01-01

    An electric signal representative of the rate of insolation is integrated to determine if it is adequate for operation of a solar energy collection system.

  17. Copper wafer bonding in three-dimensional integration

    E-Print Network [OSTI]

    Chen, Kuan-Neng, 1974-

    2005-01-01

    Three-dimensional (3D) integration, in which multiple layers of devices are stacked with high density of interconnects between the layers, offers solutions for problems when the critical dimensions in integrated circuits ...

  18. Strategies and Decision Support Systems for Integrating Variable...

    Open Energy Info (EERE)

    the design of decision support tools, solutions and strategies for integrating more wind energy into their own power systems. The findings help to increase the industry-wide...

  19. Fourier-Based Forward and Back-Projectors for Iterative Image Reconstruction

    E-Print Network [OSTI]

    Fessler, Jeffrey A.

    Fourier-Based Forward and Back-Projectors for Iterative Image Reconstruction Samuel Matej, Jeffrey. Fourier-Based Projectors B. Non-Uniform Fast Fourier Transform C. Fourier-Based Iterative Reconstruction D. Fourier-based forward and back-projection methods have the potential to considerably reduce

  20. Proposal of an Arc Detection Technique Based on RF Measurements for the ITER ICRF Antenna

    SciTech Connect (OSTI)

    Huygen, S.; Dumortier, P.; Durodie, F.; Messiaen, A.; Vervier, M.; Vrancken, M.

    2011-12-23

    RF arc detection is a key operational and safety issue for the ICRF system on ITER. Indeed the high voltages inside the antenna put it at risk of arcing, which could cause substantial damage. This paper describes the various possibilities explored by circuit simulation and the strategy now considered to protect the ITER ICRF antenna from RF arcs.

  1. TESTS OF 1-D TRANSPORT MODELS, AND THEIR PREDICTIONS FOR ITER

    E-Print Network [OSTI]

    Vlad, Gregorio

    . INTRODUCTION Predictions of ITER based on validated 1-D transport models would provide: 1) a physical research programs. Many transport models have been partially tested against tokamak data [1]. In order to establish how well each model represents the wide range of existing tokamak data we have developed the ITER

  2. First ITER Council convened in Cadarache Historic step in the quest for clean Energy

    E-Print Network [OSTI]

    First ITER Council convened in Cadarache Historic step in the quest for clean Energy Cadarache, 28 of age in a world in desperate need of clean, abundant, and carbon dioxide-free energy." Setting a new Energy Agency (IAEA), said: "Let me congratulate all who have contributed to the achievements of the ITER

  3. Performance of Iterative Multiuser Detection with a Partial PIC Detector and Serially Concatenated Codes

    E-Print Network [OSTI]

    Lee, Jae Hong

    Performance of Iterative Multiuser Detection with a Partial PIC Detector and Serially Concatenated-CDMA system. An iterative multiuser detection has a partial parallel interference cancellation (PIC) detector and serially concatenated codes. Taking the expectation value of a coded bit the partial PIC detector produces

  4. Current control in ITER steady state plasmas with neutral beam steering R. V. Budnya

    E-Print Network [OSTI]

    Budny, Robert

    . The heating and current drive systems for ITER plasmas are being designed. The primary systems being for ITER steady state plasmas are specified. Current drive by negative ion neutral beam injection, lower-hybrid as the ratio of the DT fusion and the external heating powers PDT/Pext 5 for durations of up to 3000 s

  5. Acceleration of the Jacobi iterative method by factors exceeding 100 using scheduled relaxation

    E-Print Network [OSTI]

    Mittal, Rajat

    Acceleration of the Jacobi iterative method by factors exceeding 100 using scheduled relaxation Abstract We present a methodology that accelerates the classical Jacobi iterative method by factors of the Jacobi method. Mathematical conditions that maximize the convergence rate are derived and optimal schemes

  6. Contents of ITER deal revealed The Yomiuri Shimbun (May 27, 2005, 4 am)

    E-Print Network [OSTI]

    in thermonuclear fusion. The country also will supply 20 percent of workers to ITER facilities. The four other on the roles of host and non-hosting countries involved in the International Thermonuclear Experimental Reactor. The planned ITER is an experimental facility for a thermonuclear reactor designed to produce power by fusing

  7. An Optical Programmable Network Architecture Supporting Iterative Multicast for Data-intensive Applications

    E-Print Network [OSTI]

    Ng, T. S. Eugene

    An Optical Programmable Network Architecture Supporting Iterative Multicast for Data. Bergman1 1 Department of Electrical Engineering, Columbia University, 500 West 120th Street, New York, New.edu Abstract--We present an optical programmable network architecture to enable agile and efficient iterative

  8. Soft MIMO Detection on Graphics Processing Units and Performance Study of Iterative MIMO Decoding 

    E-Print Network [OSTI]

    Arya, Richeek

    2012-10-19

    getting an acceptable Bit Error Rate (BER) and Frame Error Rate (FER) performance. Iterative decoding technique shows that a SNR gain of ~1:5dB is achieved when number of outer iterations is increased from zero. To reduce the complexity one can adjust...

  9. Europe and Japan with the elbow-with-elbow to accomodate engine ITER

    E-Print Network [OSTI]

    Europe and Japan with the elbow-with-elbow to accomodate engine ITER THE WORLD|18.12.03| UPDATED 18 in string and the competition is tight. So much so that the partners of the project (Europe, Japan:06 PMMonde.fr: Europe and Japan with the elbow-with-elbow to accomodate engine ITER Page 1 of 3http://216

  10. An iterative process for international negociations on acid rain in Northern Europe

    E-Print Network [OSTI]

    Toint, Philippe

    An iterative process for international negociations on acid rain in Northern Europe using a general 138.48.4.14) #12; An iterative process for international negotiations on acid rain in Northern Europe transboundary pollution problem related to acid rain in Northern Europe. This simulation shows the need

  11. Infinite Energy Dyon Solutions

    E-Print Network [OSTI]

    Douglas Singleton

    1996-02-18

    Three dyon solutions to the SU(2) Yang-Mills-Higgs system are presented. These solutions are obtained from the BPS dyon by allowing the gauge fields to be complex, or by letting the free parameter of the BPS solution become imaginary. In all cases however the physically measurable quantities connected with these new solutions are entirely real. Although the new solutions are mathematically simple variations of the BPS solution, they have one or more physically distinct characteristics.

  12. Integrated Brush Management Systems for Texas 

    E-Print Network [OSTI]

    Hanselka, C. Wayne; Hamilton, Wayne T.; Rector, Barron S.

    2001-01-04

    Integrated Brush Management Systems (IBMS) involve careful analysis of range resources and ranch goals in order to develop solutions to brush problems. Successful use of IBMS should result in improved management processes and greater profitability...

  13. Nebraska Statewide Wind Integration Study: Executive Summary

    SciTech Connect (OSTI)

    EnerNex Corporation, Knoxville, Tennessee; Ventyx, Atlanta, Georgia; Nebraska Power Association, Lincoln, Nebraska

    2010-03-01

    Wind generation resources in Nebraska will play an increasingly important role in the environmental and energy security solutions for the state and the nation. In this context, the Nebraska Power Association conducted a state-wide wind integration study.

  14. Iterative methods for dose reduction and image enhancement in tomography

    DOE Patents [OSTI]

    Miao, Jianwei; Fahimian, Benjamin Pooya

    2012-09-18

    A system and method for creating a three dimensional cross sectional image of an object by the reconstruction of its projections that have been iteratively refined through modification in object space and Fourier space is disclosed. The invention provides systems and methods for use with any tomographic imaging system that reconstructs an object from its projections. In one embodiment, the invention presents a method to eliminate interpolations present in conventional tomography. The method has been experimentally shown to provide higher resolution and improved image quality parameters over existing approaches. A primary benefit of the method is radiation dose reduction since the invention can produce an image of a desired quality with a fewer number projections than seen with conventional methods.

  15. Simulations of Alpha Wall Load in ITER. Final report

    SciTech Connect (OSTI)

    Carlsson, Johan

    2010-10-20

    The partially DOE funded International Thermonuclear Experimental Reactor (ITER) will produce massive amounts of energetic charged alpha particles, which are imperfectly confined by a strong magnetic field. The wall of the experiment is designed to withstand an estimated wall load from these fusion alpha particles, but the accuracy of this estimate needs to be improved to avoid potentially catastrophic surprises when the experiment becomes operational. We have added a more accurate, gyro-dynamic model of particle motion to the existing drift-dynamic model in the DELTA5D simulation software used for the project. We have also added the ability to load a detailed engineering model of the wall and use it in the simulations.

  16. Occupational Radiation Exposure Analysis of US ITER DCLL TBM

    SciTech Connect (OSTI)

    Merrill, Brad J; Cadwallader, Lee C; Dagher, Mohamad

    2007-08-01

    This report documents an Occupational Radiation Exposure (ORE) analysis that was performed for the US International Thermonuclear Experimental Reactor (ITER) Dual Coolant Lead Lithium (DCLL) Test Blanket Module (TBM). This analysis was performed with the QADMOD dose code for anticipated maintenance activities for this TBM concept and its ancillary systems. The QADMOD code was used to model the PbLi cooling loop of this TBM concept by specifying gamma ray source terms that simulated radioactive material within the piping, valves, heat exchanger, permeator, pump, drain tank, and cold trap of this cooling system. Estimates of the maintenance tasks that will have to be performed and the time required to perform these tasks where developed based on either expert opinion or on industrial maintenance experience for similar technologies. This report details the modeling activity and the calculated doses for the maintenance activities envisioned for the US DCLL TBM.

  17. Development of the bus joint for the ITER Central Solenoid

    SciTech Connect (OSTI)

    Martovetsky, Nicolai N; Irick, David Kim; Kenney, Steven J

    2013-01-01

    The terminations of the Central Solenoid (CS) modules are connected to the bus extensions by joints located outside the CS in the gap between the CS and Torodial Field (TF) assemblies. These joints have very strict space limitations. Low resistance is a common requirement for all ITER joints. In addition, the CS bus joints will experience and must be designed to withstand significant variation in the magnetic field of several tenths of a Tesla per second during initiation of plasma. The joint resistance is specified to be less than 4 nOhm. The joints also have to be soldered in the field and designed with the possibility to be installed and dismantled in order to allow cold testing in the cold test facility. We have developed coaxial joints that meet these requirements and have demonstrated the feasibility to fabricate and assemble them in the vertical configuration. We introduced a coupling cylinder with superconducting strands soldered to the surface of the cable that can be installed in the ITER assembly hall and at the Cold Test Facility. This cylinder serves as a transition area between the CS module and the bus extension. We made two racetrack samples and tested four bus joints in our Joint Test Apparatus. Resistance of the bus joints was measured by a decay method and by a microvoltmeter; the value of the current was measured by the Hall probes. This measurement method was verified in the previous tests. The resistance of the joints varied insignificantly from 1.5 to 2 nOhm. One of the challenges associated with a soldered joint is the inability to use corrosive chemicals that are difficult to clean. This paper describes our development work on cable preparation, chrome removal, compaction, soldering, and final assembly and presents the test results.

  18. Evolution of Plasma Parameters in the Termination Phase of High Confinement H-modes at JET and Implications for ITER

    E-Print Network [OSTI]

    Evolution of Plasma Parameters in the Termination Phase of High Confinement H-modes at JET and Implications for ITER

  19. Experimental Evaluation of Stable Long-Term Operation of Semiconductor Magnetic Sensors in ITER-Relevant Environment

    E-Print Network [OSTI]

    Experimental Evaluation of Stable Long-Term Operation of Semiconductor Magnetic Sensors in ITER-Relevant Environment

  20. Simulation of the Pre-Thermal Quench Stage of Disruptions During Massive Gas Injection and Projections for ITER

    E-Print Network [OSTI]

    Simulation of the Pre-Thermal Quench Stage of Disruptions During Massive Gas Injection and Projections for ITER

  1. Modelling of Melt Damage of Tungsten Armour under Multiple Transients Expected in ITER and Validations Against JET-ILW Experiments

    E-Print Network [OSTI]

    Modelling of Melt Damage of Tungsten Armour under Multiple Transients Expected in ITER and Validations Against JET-ILW Experiments

  2. Simulation of MGI Efficiency for Plasma Energy Conversion into Ar Radiation in JET and Implications for ITER

    E-Print Network [OSTI]

    Simulation of MGI Efficiency for Plasma Energy Conversion into Ar Radiation in JET and Implications for ITER

  3. High-Energy Fuel Ion Diagnostics on ITER Derived from Neutron Emission Spectroscopy Measurements on JET DT Plasmas

    E-Print Network [OSTI]

    High-Energy Fuel Ion Diagnostics on ITER Derived from Neutron Emission Spectroscopy Measurements on JET DT Plasmas

  4. Integrated structural health monitoring.

    SciTech Connect (OSTI)

    Farrar, C. R. (Charles R.)

    2001-01-01

    Structural health monitoring is the implementation of a damage detection strategy for aerospace, civil and mechanical engineering infrastructure. Typical damage experienced by this infrastructure might be the development of fatigue cracks, degradation of structural connections, or bearing wear in rotating machinery. The goal of the research effort reported herein is to develop a robust and cost-effective structural health monitoring solution by integrating and extending technologies from various engineering and information technology disciplines. It is the authors opinion that all structural health monitoring systems must be application specific. Therefore, a specific application, monitoring welded moment resisting steel frame connections in structures subjected to seismic excitation, is described along with the motivation for choosing this application. The structural health monitoring solution for this application will integrate structural dynamics, wireless data acquisition, local actuation, micro-electromechanical systems (MEMS) technology, and statistical pattern recognition algorithms. The proposed system is based on an assessment of the deficiencies associated with many current structural health monitoring technologies including past efforts by the authors. This paper provides an example of the integrated approach to structural health monitoring being undertaken at Los Alamos National Laboratory and summarizes progress to date on various aspects of the technology development.

  5. New Exact Solutions of a Generalized Shallow Water Wave Equation

    E-Print Network [OSTI]

    Bijan Bagchi; Supratim Das; Asish Ganguly

    2010-07-01

    In this work an extended elliptic function method is proposed and applied to the generalized shallow water wave equation. We systematically investigate to classify new exact travelling wave solutions expressible in terms of quasi-periodic elliptic integral function and doubly-periodic Jacobian elliptic functions. The derived new solutions include rational, periodic, singular and solitary wave solutions. An interesting comparison with the canonical procedure is provided. In some cases the obtained elliptic solution has singularity at certain region in the whole space. For such solutions we have computed the effective region where the obtained solution is free from such a singularity.

  6. Existence of global solutions to the Cauchy problem for the inelastic Boltzmann equation with near-vacuum data

    E-Print Network [OSTI]

    Ricardo J. Alonso

    2008-04-10

    The Cauchy problem for the inelastic Boltzmann equation is studied for small data. Existence and uniqueness of mild and weak solutions is obtained for sufficiently small data that lies in the space of functions bounded by Maxwellians. The technique used to derive the result is the well known iteration process of Kaniel and Shinbrot.

  7. Calculation of chemical equilibrium between aqueous solution...

    Office of Scientific and Technical Information (OSTI)

    SALTON SEA; SEAWATER; WATER; CALIFORNIA; COMPUTERS; DISPERSIONS; FELDSPARS; FLUIDS; HYDROGEN COMPOUNDS; IMPERIAL VALLEY; ITERATIVE METHODS; KINETICS; MANAGEMENT; MIXTURES; NORTH...

  8. Draft speech manuscript of Prof. Xu Guanhua, Minister of Science and Technology of China at the ITER Agreement Signature Ceremony,

    E-Print Network [OSTI]

    and projects, in international cooperation efforts in new energy development and global climate change research of ITER project, to scientists, experts and engineers who have made hard efforts in ITER research priorities. Arrangements for China joining ITER #12;Project and conducting nuclear fusion research activities

  9. Fusion Engineering and Design 82 (2007) 22172225 Integrated thermo-fluid analysis towards helium flow

    E-Print Network [OSTI]

    Abdou, Mohamed

    2007-01-01

    Fusion Engineering and Design 82 (2007) 2217­2225 Integrated thermo-fluid analysis towards helium Engineering and Design 82 (2007) 2217­2225 This calls in for an extensive analysis of the various proposed flow path design for an ITER solid breeder blanket module A. Yinga,, M. Narulaa, R. Hunta, M. Abdoua, Y

  10. ContentsContents1133integration integration

    E-Print Network [OSTI]

    Vickers, James

    ContentsContents1133integration integration 1. Basic concepts of integration 2. Definite integrals 3. The area bounded by a curve 4. Integration by parts 5. Integration by substitution and using partial fractions 6. Integration of trigonometric functions Learning outcomes In this workbook you

  11. Integrability Singular reduction

    E-Print Network [OSTI]

    Patrick, George

    Motivation Integrability Singular reduction Integration of Singular quotients Summary References Singular reduction of Poisson manifolds and integrability Rui L. Fernandes1 Joint work with J.P. Ortega Fernandes Singular reduction and integrability #12;Motivation Integrability Singular reduction Integration

  12. Research Article Using Ontologies for Integrated

    E-Print Network [OSTI]

    Camara, Gilberto

    Research Article Using Ontologies for Integrated Geographic Information Systems Frederico T Fonseca. The proposed solution is an ontology-driven geographic information system that acts as a system integrator of the system. Special emphasis is given to the case of remote sensing systems and geographic information

  13. Pedigree Analysis of the MELCOR 1.8.2 Code to be Used for ITER’s Report Preliminary on Safety

    SciTech Connect (OSTI)

    Richard L. Moore; Brad J. Merrill

    2007-06-01

    This report documents the pedigree analysis of the MELCOR 1.8.2 code to be used for ITER’s Report Preliminary on Safety. To pedigree the code the process involved four steps. First, taking the modified MELCOR 1.8.2 code used by the ITER Joint Central Team (JCT) for analyses in previous ITER Safety Assessments and compared the FORTRAN code of this version line-by-line to the original 1.8.2 version of MELCOR. The second step was a non-regression analysis which involves comparing the results from the pedigreed version against those predicted by the original, unmodified version of MELCOR 1.8.2. The third step involved comparing the pedigreed version results to results from the MELCOR version used by the ITER JCT for the Generic Site Safety Report (GSSR) against a set of accident problems analyzed for the safety report. The fourth and final step involved a comparison between the pedigreed version of the code and the developmental test problems cited in the change documents referenced in this report. The results from the pedigree process are described in this report.

  14. Formation and Sustainment of ITPs in ITER with the Baseline Heating Mix

    SciTech Connect (OSTI)

    Francesca M. Poli and Charles Kessel

    2012-12-03

    Plasmas with internal transport barriers (ITBs) are a potential and attractive route to steady-state operation in ITER. These plasmas exhibit radially localized regions of improved con nement with steep pressure gradients in the plasma core, which drive large bootstrap current and generate hollow current pro les and negative shear. This work examines the formation and sustainment of ITBs in ITER with electron cyclotron heating and current drive. It is shown that, with a trade-o of the power delivered to the equatorial and to the upper launcher, the sustainment of steady-state ITBs can be demonstrated in ITER with the baseline heating con guration.

  15. Certifying Solutions to Permutation Group Problems

    E-Print Network [OSTI]

    Sorge, Volker

    the integration of permutation group algorithms with proof planning. We consider eight basic questions arising planning. We consider eight basic questions arising in computational permutation group theory, for whichCertifying Solutions to Permutation Group Problems Arjeh Cohen 1 , Scott H. Murray 1#3; , Martin

  16. Certifying Solutions to Permutation Group Problems

    E-Print Network [OSTI]

    Murray, Scott H.

    of permutation group algorithms with proof planning. We consider eight basic questions arising in com- putational the integration of permutation group algorithms from computer algebra with proof planning. We consider eight basicCertifying Solutions to Permutation Group Problems Arjeh Cohen1 , Scott H. Murray1, , Martin Pollet

  17. Enabling rapid iterative model design within the laboratory environment 

    E-Print Network [OSTI]

    Clayton, Thomas F.

    2009-01-01

    This thesis presents a proof of concept study for the better integration of the electrophysiological and modelling aspects of neuroscience. Members of these two sub-disciplines collaborate regularly, but due to differing ...

  18. Modeling and Analysis of Alternative Concept of ITER Vacuum Vessel...

    Office of Scientific and Technical Information (OSTI)

    to the interior. This alternative design protects the HXs from external hazards such as wind, tornado, and aircraft crash. The proposed design integrates the VV HXs into a VV...

  19. Evolution equations: Frobenius integrability, conservation laws and travelling waves

    E-Print Network [OSTI]

    Geoff Prince; Naghmana Tehseen

    2015-06-07

    We give new results concerning the Frobenius integrability and solution of evolution equations admitting travelling wave solutions. In particular, we give a powerful result which explains the extraordinary integrability of some of these equations. We also discuss "local" conservations laws for evolution equations in general and demonstrate all the results for the Korteweg de Vries equation.

  20. EXISTENCE AND STABILITY OF STEADY-STATE SOLUTIONS WITH FINITE ENERGY FOR THE NAVIER-STOKES

    E-Print Network [OSTI]

    Schonbek, Maria

    EXISTENCE AND STABILITY OF STEADY-STATE SOLUTIONS WITH FINITE ENERGY FOR THE NAVIER to viscosity is sufficiently small in a natural norm we construct solutions which have finite energy (finite L2 norm). These solutions are unique among all solutions with finite energy and finite Dirichlet integral

  1. Status of the Design of the ITER ECE Diagnostic

    SciTech Connect (OSTI)

    Taylor, Gary [PPPL

    2014-04-01

    The baseline design for the ITER electron cyclotron emission (ECE) diagnostic has entered the detailed preliminary design phase. Two plasma views are planned, a radial view and an oblique view that is sensitive to distortions in the electron momentum distribution near the average thermal momentum. Both views provide high spatial resolution electron temperature profiles when the momentum distribution remains Maxwellian. The ECE diagnostic system consists of the front-end optics, including two 1000 K calibration sources, in equatorial port plug EP9, the 70-1000 GHz transmission system from the front-end to the diagnostics hall, and the ECE instrumentation in the diagnostics hall. The baseline ECE instrumentation will include two Michelson interferometers that can simultaneously measure ordinary and extraordinary mode ECE from 70 to 1000 GHz, and two heterodyne radiometer systems, covering 122-230 GHz and 244-355 GHz. Significant design challenges include 1) developing highly-reliable 1000 K calibration sources and the associated shutters/mirrors, 2) providing compliant couplings between the front-end optics and the polarization splitter box that accommodate displacements of the vacuum vessel during plasma operations and bake out, 3) protecting components from damage due to stray ECH radiation and other intense millimeter wave emission and 4) providing the low-loss broadband transmission system.

  2. DESIGN, ANALYSIS AND TEST CONCEPT FOR PROTOTYPE CRYOLINE OF ITER

    SciTech Connect (OSTI)

    Sarkar, B.; Badgujar, S.; Vaghela, H.; Shah, N.; Bhattacharya, R.; Chakrapani, Ch.

    2008-03-16

    The ITER cryo-distribution and cryoline is a part of the in-kind supply for India. The design of the systems is in progress. The topology of torus and neutral beam cryoline is defined as six process pipes along with thermal shield at 80 K and outer vacuum jacket. In order to develop confidence in the concept and to establish the high level of engineering and manufacturing technology, a prototype testing has been proposed. The prototype test will be carried out on 1:1 model in terms of dimension. However, the mass flow rate of the supercritical helium at 4.5 K and gaseous helium at 80 K will be on a 1:10 scale. The prototype cryoline has been designed and analyzed for thermal, structural and hydraulic parameters. The objective of this prototype test is to verify mechanical behavior due to thermal stress and pressure force, thermal and hydraulic performances. The concept of test facility has been realized along with the Piping and Instrumentation (P and I) diagram, instrumentation, controls, data acquisition, 80 K helium generation system along with supply and return valve boxes and interfacing hardware. The design concept, methodology for analysis and results, as well as the test facility have been discussed.

  3. Status of the design of the ITER ECE diagnostic

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

    Taylor, G.; Austin, M. E.; Beno, J. H.; Danani, S.; Ellis, R. F.; Feder, R.; Hesler, J. L.; Hubbard, A. E.; Johnson, D. W.; Kumar, R.; et al

    2015-03-12

    In this study, the baseline design for the ITER electron cyclotron emission (ECE) diagnostic has entered the detailed preliminary design phase. Two plasma views are planned, a radial view and an oblique view that is sensitive to distortions in the electron momentum distribution near the average thermal momentum. Both views provide high spatial resolution electron temperature profiles when the momentum distribution remains Maxwellian. The ECE diagnostic system consists of the front-end optics, including two 1000 K calibration sources, in equatorial port plug EP9, the 70-1000 GHz transmission system from the front-end to the diagnostics hall, and the ECE instrumentation inmore »the diagnostics hall. The baseline ECE instrumentation will include two Michelson interferometers that can simultaneously measure ordinary and extraordinary mode ECE from 70 to 1000 GHz, and two heterodyne radiometer systems, covering 122-230 GHz and 244-355 GHz. Significant design challenges include 1) developing highly-reliable 1000 K calibration sources and the associated shutters/mirrors, 2) providing compliant couplings between the front-end optics and the polarization splitter box that accommodate displacements of the vacuum vessel during plasma operations and bake out, 3) protecting components from damage due to stray ECH radiation and other intense millimeter wave emission and 4) providing the low-loss broadband transmission system.« less

  4. The A_infty de Rham theorem and integration of representations up to homotopy

    E-Print Network [OSTI]

    Abad, Camilo Arias

    2010-01-01

    We use Chen's iterated integrals to integrate representations up to homotopy. That is, we construct an A_infty functor from the representations up to homotopy of a Lie algebroid to those of its infinity groupoid. This construction extends the usual integration of representations in Lie theory. We discuss several examples including Lie algebras and Poisson manifolds. The construction is based on an A_infty version of de Rham's theorem due to Gugenheim. The integration procedure we explain here amounts to extending the construction of parallel transport for superconnections, introduced by Igusa and Block-Smith, to the case of certain differential graded manifolds.

  5. Energy efficient design of an adaptive switching algorithm for the iterative-MIMO receiver 

    E-Print Network [OSTI]

    Mohd Tadza, Noor Zahrinah Binti; Tadza, Noor Zahrinah Binti Mohd

    2015-11-26

    An efficient design dedicated for iterative-multiple-input multiple-output (MIMO) receiver systems is now imperative in our world since data demands are increasing tremendously in wireless networks. This puts a massive ...

  6. Neil Calder -neil.calder@iter.org +33 6 14 16 41 75

    E-Print Network [OSTI]

    , Russia and the United States. The meeting opened with a statement from Valérie Pecresse, French Research for the next years, export control, peaceful uses of ITER technology and non-proliferation, the Test Blanket

  7. A spatial multigrid iterative method for two-dimensional discrete-ordinates transport problems 

    E-Print Network [OSTI]

    Lansrud, Brian David

    2005-08-29

    Introduction to Chapter I............................................................ 1 The Discrete Transport Equation ............................................... 2 Examples of Current Iterative Transport Methods..................... 5................................................................... 16 Current Applications of Spatial-Multigrid Methods to SN Transport Problems........................................................... 17 Krylov Subspace Methods ......................................................... 21 Goals...

  8. ITER parties come to an agreement on the world's largest international scientific partnership

    E-Print Network [OSTI]

    emissions; no transportation of radio-active materials; no possibility of "meltdown" or "runaway reactions"; no long-lasting radioactive waste to be passed on to future generations. The Seven Parties to ITER

  9. Iterative Multivariate Regression Model for Correlated Responses Prediction S. Tom Au, Guangqin Ma, Rensheng Wang

    E-Print Network [OSTI]

    Greenberg, Albert

    Iterative Multivariate Regression Model for Correlated Responses Prediction S. Tom Au, Guangqin Ma- tive procedure to model multiple responses prediction into correlated multivariate predicting scheme, which is always favorable for responses separations in our multivariate prediction. We also point out

  10. ITER (International Thermonuclear Experimental Reactor) shield and blanket work package report

    SciTech Connect (OSTI)

    Not Available

    1988-06-01

    This report summarizes nuclear-related work in support of the US effort for the International Thermonuclear Experimental Reactor (ITER) Study. The purpose of this work was to prepare for the first international ITER workshop devoted to defining a basic ITER concept that will serve as a basis for an indepth conceptual design activity over the next 2-1/2 years. Primary tasks carried out during the past year included: design improvements of the inboard shield developed for the TIBER concept, scoping studies of a variety of tritium breeding blanket options, development of necessary design guidelines and evaluation criteria for the blanket options, further safety considerations related to nuclear components and issues regarding structural materials for an ITER device. 44 refs., 31 figs., 29 tabs.

  11. during the ITER era S.J. Zinkle; J.P. Planchard; R.W. Callis...

    Office of Scientific and Technical Information (OSTI)

    Fusion materials science and technology research opportunities now and during the ITER era S.J. Zinkle; J.P. Planchard; R.W. Callis; C.E. Kessel; P.J. Lee; K.A. McCarty; Various...

  12. Non-iterative joint decoding and signal processing: universal coding approach for channels with memory 

    E-Print Network [OSTI]

    Nangare, Nitin Ashok

    2006-08-16

    A non-iterative receiver is proposed to achieve near capacity performance on intersymbol interference (ISI) channels. There are two main ingredients in the proposed design. i) The use of a novel BCJR-DFE equalizer which ...

  13. Iterative equalization and decoding using reduced-state sequence estimation based soft-output algorithms 

    E-Print Network [OSTI]

    Tamma, Raja Venkatesh

    2004-09-30

    We study and analyze the performance of iterative equalization and decoding (IED) using an M-BCJR equalizer. We use bit error rate (BER), frame error rate simulations and extrinsic information transfer (EXIT) charts to study and compare...

  14. Smart Grid Integration Laboratory

    SciTech Connect (OSTI)

    Wade Troxell

    2011-09-30

    The initial federal funding for the Colorado State University Smart Grid Integration Laboratory is through a Congressionally Directed Project (CDP), DE-OE0000070 Smart Grid Integration Laboratory. The original program requested in three one-year increments for staff acquisition, curriculum development, and instrumentation â?? all which will benefit the Laboratory. This report focuses on the initial phase of staff acquisition which was directed and administered by DOE NETL/ West Virginia under Project Officer Tom George. Using this CDP funding, we have developed the leadership and intellectual capacity for the SGIC. This was accomplished by investing (hiring) a core team of Smart Grid Systems engineering faculty focused on education, research, and innovation of a secure and smart grid infrastructure. The Smart Grid Integration Laboratory will be housed with the separately funded Integrid Laboratory as part of CSUâ??s overall Smart Grid Integration Center (SGIC). The period of performance of this grant was 10/1/2009 to 9/30/2011 which included one no cost extension due to time delays in faculty hiring. The Smart Grid Integration Laboratoryâ??s focus is to build foundations to help graduate and undergraduates acquire systems engineering knowledge; conduct innovative research; and team externally with grid smart organizations. Using the results of the separately funded Smart Grid Workforce Education Workshop (May 2009) sponsored by the City of Fort Collins, Northern Colorado Clean Energy Cluster, Colorado State University Continuing Education, Spirae, and Siemens has been used to guide the hiring of faculty, program curriculum and education plan. This project develops faculty leaders with the intellectual capacity to inspire its students to become leaders that substantially contribute to the development and maintenance of Smart Grid infrastructure through topics such as: (1) Distributed energy systems modeling and control; (2) Energy and power conversion; (3) Simulation of electrical power distribution system that integrates significant quantities of renewable and distributed energy resources; (4) System dynamic modeling that considers end-user behavior, economics, security and regulatory frameworks; (5) Best practices for energy management IT control solutions for effective distributed energy integration (including security with the underlying physical power systems); (6) Experimental verification of effects of various arrangements of renewable generation, distributed generation and user load types along with conventional generation and transmission. Understanding the core technologies for enabling them to be used in an integrated fashion within a distribution network remains is a benefit to the future energy paradigm and future and present energy engineers.

  15. 24th IAEA Fusion Energy Conference, San Diego, CA, October 8-13, 2012 Slide 1 The ITER Blanket System Design

    E-Print Network [OSTI]

    Raffray, A. René

    24th IAEA Fusion Energy Conference, San Diego, CA, October 8-13, 2012 Slide 1 The ITER BlanketSNL , US ITER Domestic Agency; 7F4E, EU ITER Domestic Agency 24th IAEA Fusion Energy Conference ­ IAEA reflect those of the ITER Organization #12;24th IAEA Fusion Energy Conference, San Diego, CA, October 8

  16. Qualification of the US made conductors for ITER TF magnet system

    SciTech Connect (OSTI)

    Martovetsky, N; Hatfield, D; Miller, J; Bruzzone, P; Stepanov, B; Seber, B

    2009-10-08

    The US Domestic Agency (USDA) is one of the six suppliers of the TF conductor for ITER. In order to qualify conductors according to ITER requirements we prepared several lengths of the CICC and short samples for testing in the SULTAN facility in CRPP, Switzerland. We also fully characterized the strands that were used in these SULTAN samples. Fabrication experience and test results are presented and discussed.

  17. Qualification of the US Made Conductors for ITER TF Magnet System

    SciTech Connect (OSTI)

    Martovetsky, Nicolai N; Hatfield, Daniel R; Miller, John R; Bruzzone, P.; Stepanov, B.; Seber, B.

    2010-01-01

    The US Domestic Agency (USDA) is one of the six suppliers of the TF conductor for ITER. In order to qualify conductors according to ITER requirements we prepared several lengths of the CICC and short samples for testing in the SULTAN facility in CRPP, Switzerland. We also fully characterized the strands that were used in these SULTAN samples. Fabrication experience and test results are presented and discussed.

  18. 4 Solutions Solution 4.1

    E-Print Network [OSTI]

    Bhuyan, Laxmi N.

    4 Solutions Solution 4.1 4.1.1 The values of the signals are as follows: RegWrite MemRead ALUMux MemWrite ALUOp RegMux Branch a. 1 0 0 (Reg) 0 Add 1 (ALU) 0 b. 1 1 1 (Imm) 0 Add 1 (Mem) 0 ALUMux of the ALU and 1 (Mem) selects the output of memory. A value of X is a "don't care" (does not matter

  19. The electromagnetic spike solutions

    E-Print Network [OSTI]

    Ernesto Nungesser; Woei Chet Lim

    2013-09-28

    The aim of this paper is to use the existing relation between polarized electromagnetic Gowdy spacetimes and vacuum Gowdy spacetimes to find explicit solutions for electromagnetic spikes by a procedure which has been developed by one of the authors for gravitational spikes. We present new inhomogeneous solutions which we call the EME and MEM electromagnetic spike solutions.

  20. Exact solutions of Deformed Schrodinger Equation with a class of non central physical potentials

    E-Print Network [OSTI]

    M. Chabab; A. El Batoul; M. Oulne

    2015-06-20

    In this paper we present exact solutions of Schrodinger equation (SE) for a class of non central physical potentials within the formalism of position-dependent effective mass. The energy eigenvalues and eigenfunctions of the bound-states for the Schrodinger equation are obtained analytically by means of asymptotic iteration method (AIM) and easily calculated through a new generalized decomposition of the effective potential allowing easy separation of the coordinates. Our results are in excellent agreement with other works in the literature.

  1. The IBM Government Industry Framework: Accelerating solutions for smarter governments

    E-Print Network [OSTI]

    ISVs and IBM solutions that are built on industry standards and pre-integrated into the frameworkThe IBM Government Industry Framework: Accelerating solutions for smarter governments IBM operating. No wonder they perceive a growing gap between concept and realization. #12;3 IBM Industry

  2. Integrable cases of gravitating static isothermal fluid spheres

    E-Print Network [OSTI]

    B. V. Ivanov

    2001-07-17

    It is shown that different approaches towards the solution of the Einstein equations for a static spherically symmetric perfect fluid with a gamma-law equation of state lead to an Abel differential equation of the second kind. Its only integrable cases at present are flat spacetime, de Sitter solution and its Buchdahl transform, Einstein static universe and the Klein-Tolman solution.

  3. Integrative Bioengineering Institute

    SciTech Connect (OSTI)

    Eddington, David; Magin,L,Richard; Hetling, John; Cho, Michael

    2009-01-09

    Microfabrication enables many exciting experimental possibilities for medicine and biology that are not attainable through traditional methods. However, in order for microfabricated devices to have an impact they must not only provide a robust solution to a current unmet need, but also be simple enough to seamlessly integrate into standard protocols. Broad dissemination of bioMEMS has been stymied by the common aim of replacing established and well accepted protocols with equally or more complex devices, methods, or materials. The marriage of a complex, difficult to fabricate bioMEMS device with a highly variable biological system is rarely successful. Instead, the design philosophy of my lab aims to leverage a beneficial microscale phenomena (e.g. fast diffusion at the microscale) within a bioMEMS device and adapt to established methods (e.g. multiwell plate cell culture) and demonstrate a new paradigm for the field (adapt instead of replace). In order for the field of bioMEMS to mature beyond novel proof-of-concept demonstrations, researchers must focus on developing systems leveraging these phenomena and integrating into standard labs, which have largely been ignored. Towards this aim, the Integrative Bioengineering Institute has been established.

  4. Modal Analysis of Homogeneous Optical Waveguides by Boundary Integral Method

    E-Print Network [OSTI]

    Modal Analysis of Homogeneous Optical Waveguides by Boundary Integral Method Lei Wang J. Allen Cox of the waveguide. Two dierent systems of boundary integral equations are derived for the numerical solutions of the discrete propagation constants; one of them is in the form of Fredholm integral equations of the second

  5. Error Bounds from Extra Precise Iterative Refinement James Demmel

    E-Print Network [OSTI]

    Li, Xiaoye Sherry

    now prevented its adoption in standard subroutine libraries like LAPACK: (1) There was no standard way a reliable error bound for the computed solution. The completion of the new BLAS Technical Forum Standard [5 Cooperative Agreement No. ACI-9619020; NSF Grant Nos. ACI-9813362 and CCF-0444486; the DOE Grant Nos. DE-FG03

  6. Volumetric quantification of lung nodules in CT with iterative reconstruction (ASiR and MBIR)

    SciTech Connect (OSTI)

    Chen, Baiyu [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 and Carl E. Ravin Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27705 (United States)] [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 and Carl E. Ravin Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27705 (United States); Barnhart, Huiman [Department of Biostatistics and Bioinformatics, Duke University, Durham, North Carolina 27705 (United States)] [Department of Biostatistics and Bioinformatics, Duke University, Durham, North Carolina 27705 (United States); Richard, Samuel [Carl E. Ravin Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27705 and Department of Radiology, Duke University, Durham, North Carolina 27705 (United States)] [Carl E. Ravin Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27705 and Department of Radiology, Duke University, Durham, North Carolina 27705 (United States); Robins, Marthony [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States)] [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Colsher, James [Department of Radiology, Duke University, Durham, North Carolina 27705 (United States)] [Department of Radiology, Duke University, Durham, North Carolina 27705 (United States); Samei, Ehsan [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States) [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Carl E. Ravin Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27705 (United States); Department of Radiology, Duke University, Durham, North Carolina 27705 (United States); Department of Physics, Department of Biomedical Engineering, and Department of Electronic and Computer Engineering, Duke University, Durham, North Carolina 27705 (United States)

    2013-11-15

    Purpose: Volume quantifications of lung nodules with multidetector computed tomography (CT) images provide useful information for monitoring nodule developments. The accuracy and precision of the volume quantification, however, can be impacted by imaging and reconstruction parameters. This study aimed to investigate the impact of iterative reconstruction algorithms on the accuracy and precision of volume quantification with dose and slice thickness as additional variables.Methods: Repeated CT images were acquired from an anthropomorphic chest phantom with synthetic nodules (9.5 and 4.8 mm) at six dose levels, and reconstructed with three reconstruction algorithms [filtered backprojection (FBP), adaptive statistical iterative reconstruction (ASiR), and model based iterative reconstruction (MBIR)] into three slice thicknesses. The nodule volumes were measured with two clinical software (A: Lung VCAR, B: iNtuition), and analyzed for accuracy and precision.Results: Precision was found to be generally comparable between FBP and iterative reconstruction with no statistically significant difference noted for different dose levels, slice thickness, and segmentation software. Accuracy was found to be more variable. For large nodules, the accuracy was significantly different between ASiR and FBP for all slice thicknesses with both software, and significantly different between MBIR and FBP for 0.625 mm slice thickness with Software A and for all slice thicknesses with Software B. For small nodules, the accuracy was more similar between FBP and iterative reconstruction, with the exception of ASIR vs FBP at 1.25 mm with Software A and MBIR vs FBP at 0.625 mm with Software A.Conclusions: The systematic difference between the accuracy of FBP and iterative reconstructions highlights the importance of extending current segmentation software to accommodate the image characteristics of iterative reconstructions. In addition, a calibration process may help reduce the dependency of accuracy on reconstruction algorithms, such that volumes quantified from scans of different reconstruction algorithms can be compared. The little difference found between the precision of FBP and iterative reconstructions could be a result of both iterative reconstruction's diminished noise reduction at the edge of the nodules as well as the loss of resolution at high noise levels with iterative reconstruction. The findings do not rule out potential advantage of IR that might be evident in a study that uses a larger number of nodules or repeated scans.

  7. Ned Sauthoff U.S. ITER Planning Officer

    E-Print Network [OSTI]

    -breaking effects: ­ collisions ­ non-axisymmetric instabilities #12;Elements of an Integrated Tokamak Plasma Wall, atomic physics plasma-wall interaction; control by magnetics, RF/NBI heating Ion Temperature (keV) LawsonFusionParameter,niTiE(1020m-3kevs) Central Ion Temperature (keV) Tokamaks

  8. MOLECULAR PHYSICS,1976, VOL. 32, No. 2. 353-362 Application of hypernetted-chain integral equations to

    E-Print Network [OSTI]

    Stillinger, Frank

    in hydrogen bonding. The high-temperature, low-density fluid structure found in this study also exhibits. The direct iterative solutions constructed here pave the way for efficient variational extension toward room advances stem from direct numerical simulation of hamiltonian models of water [2-5], the formulation

  9. Integration of PDEs by differential geometric means

    E-Print Network [OSTI]

    Naghmana Tehseen; Geoff Prince

    2013-02-22

    We use Vessiot theory and exterior calculus to solve partial differential equations(PDEs) of the type uyy = F(x, y,u,ux,uy,uxx,uxy) and associated evolution equations. These equations are represented by the Vessiot distribution of vector fields. We develop and apply an algorithm to find the largest integrable sub-distributions and hence solutions of the PDEs. We then apply the integrating factor technique [19] to integrate this integrable Vessiot sub-distribution. The method is successfully applied to a large class of linear and non-linear PDEs.

  10. Iterated stretching and multiple beads-on-a-string phenomena in dilute solutions of highly extensible flexible polymers

    E-Print Network [OSTI]

    electrospinning,6 and inkjet printing for further details see the monograph by Yarin7 . Similar beads

  11. Influence of solute-solute interactions on membrane filtration 

    E-Print Network [OSTI]

    Neale, Peta Anne

    2009-01-01

    An understanding of solute-solute interactions is essential for aquatic systems as this can affect the fate and behaviour of micropollutants in the environment and engineered systems. Despite the importance of solute-solute ...

  12. Solution deposition assembly

    SciTech Connect (OSTI)

    Roussillon, Yann; Scholz, Jeremy H; Shelton, Addison; Green, Geoff T; Utthachoo, Piyaphant

    2014-01-21

    Methods and devices are provided for improved deposition systems. In one embodiment of the present invention, a deposition system is provided for use with a solution and a substrate. The system comprises of a solution deposition apparatus; at least one heating chamber, at least one assembly for holding a solution over the substrate; and a substrate curling apparatus for curling at least one edge of the substrate to define a zone capable of containing a volume of the solution over the substrate. In another embodiment of the present invention, a deposition system for use with a substrate, the system comprising a solution deposition apparatus; at heating chamber; and at least assembly for holding solution over the substrate to allow for a depth of at least about 0.5 microns to 10 mm.

  13. Where are we going? The need for an integrated view of in-vessel technology and the path forward

    E-Print Network [OSTI]

    in the future. The continuing wait for a significant expansion of R&D in materials (i.e., all of fusion nuclear with the perspective of an integrated view of fusion nuclear technology (see discussion) to young researchers ­ a hand requirements. ITER is our first really detailed design of a nuclear core for a magnetic fusion device and has

  14. Analytical solutions to matrix diffusion problems

    SciTech Connect (OSTI)

    Kekäläinen, Pekka

    2014-10-06

    We report an analytical method to solve in a few cases of practical interest the equations which have traditionally been proposed for the matrix diffusion problem. In matrix diffusion, elements dissolved in ground water can penetrate the porous rock surronuding the advective flow paths. In the context of radioactive waste repositories this phenomenon provides a mechanism by which the area of rock surface in contact with advecting elements is greatly enhanced, and can thus be an important delay mechanism. The cases solved are relevant for laboratory as well for in situ experiments. Solutions are given as integral representations well suited for easy numerical solution.

  15. Design and Analysis of the ITER Vertical Stability Coils

    SciTech Connect (OSTI)

    Peter H. Titus, et. al.

    2012-09-06

    The ITER vertical stability (VS) coils have been developed through the preliminary design phase by Princeton Plasma Physics Laboratory (PPPL). Final design, prototyping and construction will be carried out by the Chinese Participant Team contributing lab, Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). The VS coils are a part of the in-vessel coil systems which include edge localized mode (ELM) coils as well as the VS coils. An overview of the ELM coils is provided in another paper at this conference. 15 The VS design employs four turns of stainless steel jacketed mineral insulated copper (SSMIC) conductors The mineral insulation is Magnesium Oxide (MgO). Joule and nuclear heat is removed by water flowing at 3 m/s through the hollow copper conductor. A key element in the design is that slightly elevated temperatures in the conductor and its support spine during operation impose compressive stresses that mitigate fatigue damage. Away from joints, and break-outs, conductor thermal stresses are low because of the axisymmetry of the winding (there are no corner bends as in the ELM coils).The 120 degree segment joint, and break-out or terminal regions are designed with similar but imperfect constraint compared with the ring coil portion of the VS. The support for the break-out region is made from a high strength copper alloy, CuCrZr. This is needed to conduct nuclear heat to the actively cooled conductor and to the vessel wall. The support "spine" for the ring coil portion of the VS is 316 stainless steel, held to the vessel with preloaded 718 bolts. Lorentz loads resulting from normal operating loads, disruption loads and loads from disruption currents in the support spine shared with vessel, are applied to the VS coil. The transmission of the Lorentz and thermal expansion loads from the "spine" to the vessel rails is via friction augmented with a restraining "lip" to ensure the coil frictional slip is minimal and acceptable. Stresses in the coil, joints, and break-outs are presented. These are compared with static and fatigue allowables. Design for fatigue is much less demanding than for the ELM coils. A total of 30,000 cycles is required for VS design. Loads on the vessel due to the thermal expansion of the coil and spine are significant. Efforts to reduce these by reducing the cross section of the spine have been made but the vessel still must support loads resulting from restraint of thermal expansion.

  16. Mixed oxide solid solutions

    DOE Patents [OSTI]

    Magno, Scott (Dublin, CA); Wang, Ruiping (Fremont, CA); Derouane, Eric (Liverpool, GB)

    2003-01-01

    The present invention is a mixed oxide solid solution containing a tetravalent and a pentavalent cation that can be used as a support for a metal combustion catalyst. The invention is furthermore a combustion catalyst containing the mixed oxide solid solution and a method of making the mixed oxide solid solution. The tetravalent cation is zirconium(+4), hafnium(+4) or thorium(+4). In one embodiment, the pentavalent cation is tantalum(+5), niobium(+5) or bismuth(+5). Mixed oxide solid solutions of the present invention exhibit enhanced thermal stability, maintaining relatively high surface areas at high temperatures in the presence of water vapor.

  17. Quiz 7 w: Solutions

    E-Print Network [OSTI]

    Owner

    2013-08-16

    Apr 18, 2013 ... The annual effective risk free interest rate is 4%. Determine the maximum loss that you could incur on a long 6 month forward contract. Solution:.

  18. Solution to Quiz 5

    E-Print Network [OSTI]

    jeffb_000

    2013-12-02

    Nov 19, 2013 ... Calculate the total transaction costs incurred by Patrick and Eric combined. Solution: Ask Price = 30. Bid Ask Spread = 0.50 = Ask Price - Bid ...

  19. Integrating Module

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan Feb Mar Apr MayYearYear JanDecade Year-0per6,167,3715) Integrating

  20. The relationship between behavioral measures of self- control : temporal discounting and the single-player iterated prisoner's dilemma

    E-Print Network [OSTI]

    Charlton, Shawn R.

    2006-01-01

    discounting and the prisoner’s dilemma game in intranasalcooperation in an iterated prisoner's dilemma game and theand patterning in a prisoner's dilemma game. Journal of

  1. ITER vacuum vessel fabrication plan and cost study (D 68) for the international thermonuclear experimental reactor

    SciTech Connect (OSTI)

    1995-01-01

    ITER Task No. 8, Vacuum Vessel Fabrication Plan and Cost Study (D68), was initiated to assess ITER vacuum vessel fabrication, assembly, and cost. The industrial team of Raytheon Engineers & Constructors and Chicago Bridge & Iron (Raytheon/CB&I) reviewed the current vessel basis and prepared a manufacturing plan, assembly plan, and cost estimate commensurate with the present design. The guidance for the Raytheon/CB&I assessment activities was prepared by the ITER Garching Work Site. This guidance provided in the form of work descriptions, sketches, drawings, and costing guidelines for each of the presently identified vacuum vessel Work Breakdown Structure (WBS) elements was compiled in ITER Garching Joint Work Site Memo (Draft No. 9 - G 15 MD 01 94-17-05 W 1). A copy of this document is provided as Appendix 1 to this report. Additional information and clarifications required for the Raytheon/CB&I assessments were coordinated through the US Home Team (USHT) and its technical representative. Design details considered essential to the Task 8 assessments but not available from the ITER Joint Central Team (JCT) were generated by Raytheon/CB&I and documented accordingly.

  2. Heating and current drive requirements towards steady state operation in ITER

    SciTech Connect (OSTI)

    Poli, F. M.; Kessel, C. E.; Gorelenkova, M. [Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States); Bonoli, P. T. [MIT Plasma Science and Fusion Center, Cambridge, MA 02139 (United States); Batchelor, D. B. [Oak Ridge National Laboratory, Oak Ridge, TN 37831-6169 (United States); Harvey, B.; Petrov, Y. [CompX, Box 2672, Del Mar, CA 92014 (United States)

    2014-02-12

    Steady state scenarios envisaged for ITER aim at optimizing the bootstrap current, while maintaining sufficient confinement and stability to provide the necessary fusion yield. Non-inductive scenarios will need to operate with Internal Transport Barriers (ITBs) in order to reach adequate fusion gain at typical currents of 9 MA. However, the large pressure gradients associated with ITBs in regions of weak or negative magnetic shear can be conducive to ideal MHD instabilities, reducing the no-wall limit. The E × B flow shear from toroidal plasma rotation is expected to be low in ITER, with a major role in the ITB dynamics being played by magnetic geometry. Combinations of H/CD sources that maintain weakly reversed magnetic shear profiles throughout the discharge are the focus of this work. Time-dependent transport simulations indicate that, with a trade-off of the EC equatorial and upper launcher, the formation and sustainment of quasi-steady state ITBs could be demonstrated in ITER with the baseline heating configuration. However, with proper constraints from peeling-ballooning theory on the pedestal width and height, the fusion gain and the maximum non-inductive current are below the ITER target. Upgrades of the heating and current drive system in ITER, like the use of Lower Hybrid current drive, could overcome these limitations, sustaining higher non-inductive current and confinement, more expanded ITBs which are ideal MHD stable.

  3. Dispersant solutions for dispersing hydrocarbons

    DOE Patents [OSTI]

    Tyndall, R.L.

    1997-03-11

    A dispersant solution includes a hydrocarbon dispersing solution derived from a bacterium from ATCC 75527, ATCC 75529, or ATCC 55638.

  4. Dispersant solutions for dispersing hydrocarbons

    DOE Patents [OSTI]

    Tyndall, Richard L. (Clinton, TN)

    1997-01-01

    A dispersant solution includes a hydrocarbon dispersing solution derived from a bacterium from ATCC 75527, ATCC 75529, or ATCC 55638.

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

    SciTech Connect (OSTI)

    Berggren, Martin Olof

    2003-03-01

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

  6. 1999 Solutions Euclid Contest

    E-Print Network [OSTI]

    Le Roy, Robert J.

    1999 Solutions Euclid Contest (Grade12) for the Awards Canadian Mathematics Competition An activity of The Centre for Education in Mathematics and Computing, University of Waterloo, Waterloo, Ontario © 1999 Waterloo Mathematics Foundation #12;1999 Euclid Solutions 2 1. (a) If x­ ­ ­1 1 1 3 4= + , what

  7. Integrated Building Management System (IBMS)

    SciTech Connect (OSTI)

    Anita Lewis

    2012-07-01

    This project provides a combination of software and services that more easily and cost-effectively help to achieve optimized building performance and energy efficiency. Featuring an open-platform, cloud- hosted application suite and an intuitive user experience, this solution simplifies a traditionally very complex process by collecting data from disparate building systems and creating a single, integrated view of building and system performance. The Fault Detection and Diagnostics algorithms developed within the IBMS have been designed and tested as an integrated component of the control algorithms running the equipment being monitored. The algorithms identify the normal control behaviors of the equipment without interfering with the equipment control sequences. The algorithms also work without interfering with any cooperative control sequences operating between different pieces of equipment or building systems. In this manner the FDD algorithms create an integrated building management system.

  8. Comprehensive Solutions for Integration of Solar Resources into...

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

    including the ramping requirements. The main objective is to provide rapid (every 5 min) look-ahead (up to 5 to 8 hours ahead) assessment of the resulting uncertainty ranges for...

  9. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    novel silicon graphene composite material that will substantially improve battery cycle life. When combined with other advanced battery materials, it could effectively lower...

  10. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    to recover and reclaim clean water from engines powered by diesel, gasoline or natural gas. Military and commercial applications include transport and stationery power plants,...

  11. Integrating Security Solutions to Support nanoCMOS Electronics Research

    E-Print Network [OSTI]

    Sinnott, R.O.

    Sinnott,R.O. Asenov,A. Bayliss,C. Davenhall,C. Doherty,T. Harbulot,B. Jones,M. Martin,D. Millar,C. Roy,G. Roy,S. Stewart,G. Watt,J. IEEE International Symposium on Parallel and Distributed Processing Systems with Applications, Sydney Australia, December 2008.

  12. Integrated Design: A High-Performance Solution for Affordable...

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

    Habitat, MA Green Mountain Habitat, VT Habitat of Schenectady, NY Habitat of Washington, DC Philadelphia Habitat, PA System Building Research Alliance, New York, NY Clayton Homes,...

  13. Enhancing Performance Contracts: Integrating IAQ Solutions in Hot & Humid Climates 

    E-Print Network [OSTI]

    Turner, S. C.

    1998-01-01

    in hot and humid climates, and have limited applicability along the Gulf Coast. Humidity control problems are abundant, since cool air at dawn or dusk may be near saturated, and sensible loads may be so low that system sensible heat ratio.... Recovery and outdoor air intake ducts must be close enough to make installation practical. Large air flows require large wheels, and wheel geometry dictates limited equipment configurations. Aggressive maintenance is required to sustain performance...

  14. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    Laboratory 10147 likes SH Coatings, based in Dallas, Texas, employs Super Hydrophobic Coating (SHC) technology that protects power systems by preventing ice accumulation on power...

  15. Demonstrating and Deploying Integrated Retrofit Technologies and Solutions

    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: AlternativeCommunication &20081-929-200499Act of 2005: A Summary for State- 2014 BTO Peer

  16. CBEI - Demonstrating & Deploying Integrated Retrofit Technologies & Solutions

    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:FinancingPetroleum Based Fuels| Department ofBusiness Opportunity SessionJuneof Energy

  17. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide toIMPROVEMENT OFBarriersInstitutional changeWebVPNof333 likes

  18. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide toIMPROVEMENT OFBarriersInstitutional changeWebVPNof333 likes333

  19. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide toIMPROVEMENT OFBarriersInstitutional changeWebVPNof333 likes333333

  20. Integrated Dynamic Electron Solutions, Inc. | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide toIMPROVEMENT OFBarriersInstitutional changeWebVPNof333

  1. TECHNOLOGY SOLUTIONS FOR WIND INTEGRATION IN ERCOT (Technical Report) |

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System inStatusandArticle)SystemSystem(Journal Article)

  2. TECHNOLOGY SOLUTIONS FOR WIND INTEGRATION IN ERCOT (Technical Report) |

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System inStatusandArticle)SystemSystem(Journal Article)SciTech

  3. TECHNOLOGY SOLUTIONS FOR WIND INTEGRATION IN ERCOT (Technical Report) |

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System inStatusandArticle)SystemSystem(Journal

  4. TECHNOLOGY SOLUTIONS FOR WIND INTEGRATION IN ERCOT (Technical Report) |

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System inStatusandArticle)SystemSystem(JournalSciTech

  5. Integrated Design: A High-Performance Solution for Affordable Housing |

    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 RankADVANCED MANUFACTURING OFFICE INDUSTRIAL TECHNICAL8-02 InspectionCONFERENCE ofPilot Project

  6. Demonstrating & Deploying Integrated Retrofit Technologies & Solutions

    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:FinancingPetroleum Based| Department8, 20153Daniel BoffDepartmentbegins on K-25's North

  7. Solvent wash solution

    DOE Patents [OSTI]

    Neace, James C. (Blackville, SC)

    1986-01-01

    Process for removing diluent degradation products from a solvent extraction solution, which has been used to recover uranium and plutonium from spent nuclear fuel. A wash solution and the solvent extraction solution are combined. The wash solution contains (a) water and (b) up to about, and including, 50 volume percent of at least one-polar water-miscible organic solvent based on the total volume of the water and the highly-polar organic solvent. The wash solution also preferably contains at least one inorganic salt. The diluent degradation products dissolve in the highly-polar organic solvent and the organic solvent extraction solvent do not dissolve in the highly-polar organic solvent. The highly-polar organic solvent and the extraction solvent are separated.

  8. Solvent wash solution

    DOE Patents [OSTI]

    Neace, J.C.

    1984-03-13

    A process is claimed for removing diluent degradation products from a solvent extraction solution, which has been used to recover uranium and plutonium from spent nuclear fuel. A wash solution and the solvent extraction solution are combined. The wash solution contains (a) water and (b) up to about, and including, 50 vol % of at least one-polar water-miscible organic solvent based on the total volume of the water and the highly-polar organic solvent. The wash solution also preferably contains at least one inorganic salt. The diluent degradation products dissolve in the highly-polar organic solvent and the organic solvent extraction solvent do not dissolve in the highly-polar organic solvent. The highly-polar organic solvent and the extraction solvent are separated.

  9. Numerical studies of the imaging properties of doubly focussing crystals and their application to ITER

    SciTech Connect (OSTI)

    Bitter, M.; Fraenkel, B.; Hill, K.W.; Hsuan, H.; von Goeler, S. )

    1995-01-01

    Line brightness calculations for the parameters at the International Thermonuclear Experimental Reactor (ITER) and results from recent experiments on the Tokamak Fusion Test Reactor (TFTR) indicate that time-resolved measurements of the central ion temperature and other central plasma parameters should be feasible on ITER with nonperturbing amounts of krypton. Since the measurements will have to be performed in the presence of high fluxes of 14-MeV neutrons from DT-fusion reactions, the size of windows, apertures and x-ray detectors must be as small as possible. Under these conditions, the use of doubly focussing crystals can significantly enhance the signal-to-noise ratio. This paper describes numerical studies of the focussing properties of spherically bent crystals and their application to ITER.

  10. Development of a coarse-grained water forcefield via multistate iterative Boltzmann inversion

    E-Print Network [OSTI]

    Moore, Timothy C; McCabe, Clare

    2015-01-01

    A coarse-grained water model is developed using multistate iterative Boltzmann inversion. Following previous work, the k-means algorithm is used to dynamically map multiple water molecules to a single coarse-grained bead, allowing the use of structure-based coarse-graining methods. The model is derived to match the bulk and interfacial properties of liquid water and improves upon previous work that used single state iterative Boltzmann inversion. The model accurately reproduces the density and structural correlations of water at 305 K and 1.0 atm, stability of a liquid droplet at 305 K, and shows little tendency to crystallize at physiological conditions. This work also illustrates several advantages of using multistate iterative Boltzmann inversion for deriving generally applicable coarse-grained forcefields.

  11. Investigation of statistical iterative reconstruction for dedicated breast CT

    SciTech Connect (OSTI)

    Makeev, Andrey; Glick, Stephen J.

    2013-08-15

    Purpose: Dedicated breast CT has great potential for improving the detection and diagnosis of breast cancer. Statistical iterative reconstruction (SIR) in dedicated breast CT is a promising alternative to traditional filtered backprojection (FBP). One of the difficulties in using SIR is the presence of free parameters in the algorithm that control the appearance of the resulting image. These parameters require tuning in order to achieve high quality reconstructions. In this study, the authors investigated the penalized maximum likelihood (PML) method with two commonly used types of roughness penalty functions: hyperbolic potential and anisotropic total variation (TV) norm. Reconstructed images were compared with images obtained using standard FBP. Optimal parameters for PML with the hyperbolic prior are reported for the task of detecting microcalcifications embedded in breast tissue.Methods: Computer simulations were used to acquire projections in a half-cone beam geometry. The modeled setup describes a realistic breast CT benchtop system, with an x-ray spectra produced by a point source and an a-Si, CsI:Tl flat-panel detector. A voxelized anthropomorphic breast phantom with 280 ?m microcalcification spheres embedded in it was used to model attenuation properties of the uncompressed woman's breast in a pendant position. The reconstruction of 3D images was performed using the separable paraboloidal surrogates algorithm with ordered subsets. Task performance was assessed with the ideal observer detectability index to determine optimal PML parameters.Results: The authors' findings suggest that there is a preferred range of values of the roughness penalty weight and the edge preservation threshold in the penalized objective function with the hyperbolic potential, which resulted in low noise images with high contrast microcalcifications preserved. In terms of numerical observer detectability index, the PML method with optimal parameters yielded substantially improved performance (by a factor of greater than 10) compared to FBP. The hyperbolic prior was also observed to be superior to the TV norm. A few of the best-performing parameter pairs for the PML method also demonstrated superior performance for various radiation doses. In fact, using PML with certain parameter values results in better images, acquired using 2 mGy dose, than FBP-reconstructed images acquired using 6 mGy dose.Conclusions: A range of optimal free parameters for the PML algorithm with hyperbolic and TV norm-based potentials is presented for the microcalcification detection task, in dedicated breast CT. The reported values can be used as starting values of the free parameters, when SIR techniques are used for image reconstruction. Significant improvement in image quality can be achieved by using PML with optimal combination of parameters, as compared to FBP. Importantly, these results suggest improved detection of microcalcifications can be obtained by using PML with lower radiation dose to the patient, than using FBP with higher dose.

  12. SU-F-18C-06: Prospective Patient Evaluation of Iterative Reconstruction in Radiation Oncology

    SciTech Connect (OSTI)

    Price, R; Vance, S; Cattaneo, R; Schultz, L; Elshaikh, M; Chetty, I; Glide-Hurst, C

    2014-06-15

    Purpose: This work incorporates iterative reconstruction (IR) into a dose reduction study to characterize image quality metrics, delineation, and dosimetric assessment, with the goal of reducing imaging dose in Radiation Oncology. Methods: Three-dimensional noise power spectrum (NPS) analysis characterized noise magnitude/texture (120 kVp, 50–200 mAs, IR levels 1–6 yielding noise reduction of 0.89–0.55 compared to filtered backprojection (FBP)). Task-specific Modulation Transfer Functions (MTFtask) were characterized across varied subject contrasts. A prospective dose reduction study (500 to 150 mAs) was conducted for 12 patients (43 inter-fraction CTs) for high-dose rate brachytherapy. Three physicians performed qualitative image assessment between full-dose FBP (FD-FBP, 500 mAs), low-dose FBP (LD-FBP, 150–250 mAs), and low-dose IRL5-6 (LD-IR) scans for image noise, cuff/bladder interface detectability, spatial resolution, texture, and segmentation confidence. Comparisons between LD-FBP and LD-IR were conducted for the following metrics: delineation (bladder and rectum evaluated via overlap indices (OI) and Dice similarity coefficients (DSC)), noise, boundary changes, dose calculation, and digitally reconstructed radiographs (DRRs). Results: NPS showed ?50% reduction in noise magnitude and ?0.1 1/mm spatial frequency shift with IRL6. The largest MTFtask decrease between FBP and IR was 0.08 A.U. Qualitative patient image evaluation revealed LD-IR was equivalent or slightly worse than FD-FBP, and superior to LD-FBP for all metrics except low contrast interface and texture. The largest CT number discrepancy from FBP occurred at a bone/tissue interface using IRL6 (?1.2 ± 4.9 HU (range: ?17.6 – 12.5 HU)). No significant contour differences (OIs and DSCs = 0.85 – 0.95) and dose calculation discrepancy (<0.02%) were observed. DRRs preserved anatomical detail and demonstrated <2% difference in intensity between LD-FBP and LD-IRL6. Conclusion: While phantom analysis showed slight noise texture differences with IR, patient results revealed that image quality, contouring ability, and dosimetric parameters were not adversely affected, thus support integrating IR into treatment planning. Research supported in part by a grant from Philips HealthCare.

  13. Beyond ITER: Neutral beams for a demonstration fusion reactor (DEMO) (invited)

    SciTech Connect (OSTI)

    McAdams, R., E-mail: roy.mcadams@ccfe.ac.uk [EURATOM/CCFE Association, Culham Science Centre, Abingdon, Oxfordshire OX14 3DB (United Kingdom)

    2014-02-15

    In the development of magnetically confined fusion as an economically sustainable power source, International Tokamak Experimental Reactor (ITER) is currently under construction. Beyond ITER is the demonstration fusion reactor (DEMO) programme in which the physics and engineering aspects of a future fusion power plant will be demonstrated. DEMO will produce net electrical power. The DEMO programme will be outlined and the role of neutral beams for heating and current drive will be described. In particular, the importance of the efficiency of neutral beam systems in terms of injected neutral beam power compared to wallplug power will be discussed. Options for improving this efficiency including advanced neutralisers and energy recovery are discussed.

  14. High Efficiency Integrated Package

    SciTech Connect (OSTI)

    Ibbetson, James

    2013-09-15

    Solid-state lighting based on LEDs has emerged as a superior alternative to inefficient conventional lighting, particularly incandescent. LED lighting can lead to 80 percent energy savings; can last 50,000 hours – 2-50 times longer than most bulbs; and contains no toxic lead or mercury. However, to enable mass adoption, particularly at the consumer level, the cost of LED luminaires must be reduced by an order of magnitude while achieving superior efficiency, light quality and lifetime. To become viable, energy-efficient replacement solutions must deliver system efficacies of ? 100 lumens per watt (LPW) with excellent color rendering (CRI > 85) at a cost that enables payback cycles of two years or less for commercial applications. This development will enable significant site energy savings as it targets commercial and retail lighting applications that are most sensitive to the lifetime operating costs with their extended operating hours per day. If costs are reduced substantially, dramatic energy savings can be realized by replacing incandescent lighting in the residential market as well. In light of these challenges, Cree proposed to develop a multi-chip integrated LED package with an output of > 1000 lumens of warm white light operating at an efficacy of at least 128 LPW with a CRI > 85. This product will serve as the light engine for replacement lamps and luminaires. At the end of the proposed program, this integrated package was to be used in a proof-of-concept lamp prototype to demonstrate the component’s viability in a common form factor. During this project Cree SBTC developed an efficient, compact warm-white LED package with an integrated remote color down-converter. Via a combination of intensive optical, electrical, and thermal optimization, a package design was obtained that met nearly all project goals. This package emitted 1295 lm under instant-on, room-temperature testing conditions, with an efficacy of 128.4 lm/W at a color temperature of ~2873K and 83 CRI. As such, the package’s performance exceeds DOE’s warm-white phosphor LED efficacy target for 2013. At the end of the program, we assembled an A19 sized demonstration bulb housing the integrated package which met Energy Star intensity variation requirements. With further development to reduce overall component cost, we anticipate that an integrated remote converter package such as developed during this program will find application in compact, high-efficacy LED-based lamps, particularly those requiring omnidirectional emission.

  15. Numerical Solution of 3D Poisson-Nernst-Planck Equations Coupled with Classical Density Functional Theory for Modeling Ion and Electron Transport in a Confined Environment

    SciTech Connect (OSTI)

    Meng, Da; Zheng, Bin; Lin, Guang; Sushko, Maria L.

    2014-08-29

    We have developed efficient numerical algorithms for the solution of 3D steady-state Poisson-Nernst-Planck equations (PNP) with excess chemical potentials described by the classical density functional theory (cDFT). The coupled PNP equations are discretized by finite difference scheme and solved iteratively by Gummel method with relaxation. The Nernst-Planck equations are transformed into Laplace equations through the Slotboom transformation. Algebraic multigrid method is then applied to efficiently solve the Poisson equation and the transformed Nernst-Planck equations. A novel strategy for calculating excess chemical potentials through fast Fourier transforms is proposed which reduces computational complexity from O(N2) to O(NlogN) where N is the number of grid points. Integrals involving Dirac delta function are evaluated directly by coordinate transformation which yields more accurate result compared to applying numerical quadrature to an approximated delta function. Numerical results for ion and electron transport in solid electrolyte for Li ion batteries are shown to be in good agreement with the experimental data and the results from previous studies.

  16. Hanford site integrated pest management plan

    SciTech Connect (OSTI)

    Giddings, R.F.

    1996-04-09

    The Hanford Site Integrated Pest Management Plan (HSIPMP) defines the Integrated Pest Management (IPM) decision process and subsequent strategies by which pest problems are to be solved at all Hanford Site properties per DOE-RL Site Infrastructure Division memo (WHC 9505090). The HSIPMP defines the roles that contractor organizations play in supporting the IPM process. In short the IPM process anticipates and prevents pest activity and infestation by combining several strategies to achieve long-term pest control solutions.

  17. High-order solutions of three-dimensional rough-surface scattering problems at high frequencies.

    E-Print Network [OSTI]

    Turc, Catalin

    High-order solutions of three-dimensional rough-surface scattering problems at high frequencies. I-order numerical method for the solution of high- frequency scattering problems from rough surfaces in three dimensions. The method is based on the asymptotic solution of appropriate integral equations in the high-frequency

  18. Sustainable and Holistic Integration of Energy Storage and Solar PV (SHINES) Funding Opportunity

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Sustainable and Holistic Integration of Energy Storage and Solar PV (SHINES) solution as envisioned by SunShot will have the following features:

  19. MA54200 HOMEWORK 1.3. Show that the principal value integral ...

    E-Print Network [OSTI]

    2008-09-15

    MA54200 HOMEWORK. ASSIGNMENT 1: SOLUTIONS. 1.3. Show that the principal value integral. p.v.. ? ?(x) x dx = lim. ??0+. (? ??. ?? ?(x) x dx +. ? ?. ?.

  20. Integrated Deployment Model: A Comprehensive Approach to Transforming the Energy Economy

    SciTech Connect (OSTI)

    Werner, M.

    2010-11-01

    This paper describes the Integrated Deployment model to accelerate market adoption of alternative energy solutions to power homes, businesses, and vehicles through a comprehensive and aggressive approach.

  1. PPPL3300, Preprint: May 1998, UC420,423 Tritium Experience in Large Tokamaks: Application to ITER

    E-Print Network [OSTI]

    to ITER Report on the IEA workshop held at: Princeton, New Jersey, United States of America 16­18th March on an IEA workshop that brought together scientists and engineers to share experience and expertise on all community. The IEA workshop brought together 90 scientists and engineers from: ITER, TFTR, JET, Asdex, DIII

  2. PPPL-3300, Preprint: May 1998, UC-420,423 Tritium Experience in Large Tokamaks: Application to ITER

    E-Print Network [OSTI]

    to ITER Report on the IEA workshop held at: Princeton, New Jersey, United States of America 16-18th March on an IEA workshop that brought together scientists and engineers to share experience and expertise on all community. The IEA workshop brought together 90 scientists and engineers from: ITER, TFTR, JET, Asdex, DIII

  3. PROGRESS OF ITER FIRST WALL DESIGN R. Mitteau(*), R. Raffray(*), P. Chappuis(*), M. Merola(*), D. Loesser(**) on behalf of the

    E-Print Network [OSTI]

    Raffray, A. René

    of the first wall components, direct plasma contact to the first wall at moderate power (7.5 MW) is possible1 PROGRESS OF ITER FIRST WALL DESIGN R. Mitteau(*), R. Raffray(*), P. Chappuis(*), M. Merola(*), D ABSTRACT The blanket first wall concept has substantially evolved since the ITER design review of 2007

  4. Exhibit 15 Rights in Data-Special Works ITER UT-B Contracts Div Page 1 of 1

    E-Print Network [OSTI]

    to the Agreement on the Establishment of the ITER International Fusion Energy Organization for the Joint the ITER International Fusion Energy Organization as described in the Agreement. (b) Allocation of Rights, a paid-up, nonexclusive, irrevocable, world-wide license for all delivered data to reproduce, prepare

  5. PPPL3145 Preprint Date: October 1995, UC420, 426, 427 AlphaPhysics and Measurement Requirements for ITER

    E-Print Network [OSTI]

    heating will be more difficult to predict and control than existing heating systems such as NBI and ICRH and their implications for alpha particle measurements. A comparison is made between alpha heating in ITER and NBI and ICRH heating systems in present tokamaks, and alpha particle issues in ITER are discussed in three

  6. PPPL-3145 -Preprint Date: October 1995, UC-420, 426, 427 Alpha-Physics and Measurement Requirements for ITER

    E-Print Network [OSTI]

    and control than existing heating systems such as NBI and ICRH. In addition, alpha particle heating and loss measurements. A comparison is made between alpha heating in ITER and NBI and ICRH heating systems in present in ITER requires about 300 MW of alpha particle heating power. Since the alpha particle creation rate

  7. Effects of increasing the number of players and memory size in the iterated Prisoner's Dilemma: a numerical

    E-Print Network [OSTI]

    Hauert, Christoph

    Effects of increasing the number of players and memory size in the iterated Prisoner's Dilemma The Prisoner's Dilemma has become a paradigm for the evolution of altruistic behaviour. Here we present results of numerical simulations of the infinitely iterated stochastic simultaneous Prisoner's Dilemma considering

  8. ITER-FEAT Operation Y. Shimomura 1), R. Aymar 2), V. Chuyanov 2), M. Huguet 1), H. Matsumoto 2),

    E-Print Network [OSTI]

    pulse hybrid modes, non-inductive steady-state modes, with large ranges of plasma current, density, beta and fusion power, and with various heating and current drive methods. This flexibility will provide are discussed in this paper. 2. Overview of ITER Operation After commissioning the ITER system, the tokamak

  9. Spain offers a total of 900 Millions Spain proposes to double her contribution to host ITER, the experimental fusion

    E-Print Network [OSTI]

    Spain offers a total of 900 Millions Spain proposes to double her contribution to host ITER agreed in order to host this international nuclear fusion project. With this offer the government offers from Japan and Canada. ITER is a project designed to develop the technologies to be used

  10. ITER: Japan to assign 20 percent of construction work to EU firms; Proposal for EU official to assume chief executive

    E-Print Network [OSTI]

    Experimental Reactor (ITER). Japan yesterday revealed the details of a proposal to host the project. Tokyo has, Japan bears half price even with construction inside the EU limits of the accessory structures prospect. The experimental device in order ITER generates electricity, reproducing the fusion reaction

  11. THERMOMECHANICAL ANALYSIS OF THE REVISED U.S. ITER DCLL TEST BLANKET MODULE Aaron T. Aoyama1

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    admissible behavior regarding the ITER Design Criteria and that the most recent design modifications did the first Structural Evaluation Plan (S.E.P.) using the ITER Structural Design Criteria for In@fusion.gat.com The US Fusion Nuclear Science and Technology program selected the Dual Coolant Lead Lithium (DCLL

  12. IBM Software Solution Brief

    E-Print Network [OSTI]

    or structure--and they generate approximately 15 percent of all green- house gas emissions.2 Excluding staffing management and greenhouse gas emissions. Automated operations management: IBM solutions provide automated

  13. Solutions to Assignment 2.

    E-Print Network [OSTI]

    2006-10-24

    Assignment 2 Solutions. James Vanderhyde. 1. Problem 7-5. (a) Let x1, x2, and x3 be the three values that are picked at random. Since there are 3! = 6 ways to ...

  14. Quiz 5 Solutions

    E-Print Network [OSTI]

    Apr 25, 2015 ... Math 373. Spring 2015. Quiz 5. April 16, 2015. 1. In a short sale of a stock, there is credit risk. Define credit risk. Solution: Credit risk is the risk ...

  15. Residential Energy Efficiency Solutions

    Broader source: Energy.gov [DOE]

    Our mission is to increase the availability of high-quality, safe, affordable and workforce housing options. Through innovative reuse and rehabilitation we incorporate economic benefits, environmental stewardship/energy efficiency, and social solutions.

  16. Evaporation/ Solution Droplet

    E-Print Network [OSTI]

    Suslick, Kenneth S.

    Solvent Evaporation/ Reactions Precursor Solution Droplet Product Densification Product Collection Production of Nano-Materials microporous shell internal macropores Hierarchically Porous Carbons Brandon Ito (20 ppm) Formaldehyde (20 ppm) Control (50% RH) Maryam SayyahKaty Filson Wei Jiang Mechanoluminescence

  17. Solutions to Assignment 1

    E-Print Network [OSTI]

    2003-11-25

    Solutions to Assignment 1. 1. Let G be a finite set with an associative law of composition, and e ? G an element with xe = ex = x for all x ? G. If G has the ...

  18. Solutions to Assignment 5.

    E-Print Network [OSTI]

    2006-12-07

    Assignment 5 Solutions. James Vanderhyde. 1. Problem 31.2-6. Recall F1 = 0, F2 = 1, and Fk+1 = Fk + Fk?1 for k > 2. By the discussion in the book ...

  19. Separations and safeguards model integration.

    SciTech Connect (OSTI)

    Cipiti, Benjamin B.; Zinaman, Owen

    2010-09-01

    Research and development of advanced reprocessing plant designs can greatly benefit from the development of a reprocessing plant model capable of transient solvent extraction chemistry. This type of model can be used to optimize the operations of a plant as well as the designs for safeguards, security, and safety. Previous work has integrated a transient solvent extraction simulation module, based on the Solvent Extraction Process Having Interaction Solutes (SEPHIS) code developed at Oak Ridge National Laboratory, with the Separations and Safeguards Performance Model (SSPM) developed at Sandia National Laboratory, as a first step toward creating a more versatile design and evaluation tool. The goal of this work was to strengthen the integration by linking more variables between the two codes. The results from this integrated model show expected operational performance through plant transients. Additionally, ORIGEN source term files were integrated into the SSPM to provide concentrations, radioactivity, neutron emission rate, and thermal power data for various spent fuels. This data was used to generate measurement blocks that can determine the radioactivity, neutron emission rate, or thermal power of any stream or vessel in the plant model. This work examined how the code could be expanded to integrate other separation steps and benchmark the results to other data. Recommendations for future work will be presented.

  20. Magnetostatic focal spot correction for x-ray tubes operating in strong magnetic fields using iterative optimization

    SciTech Connect (OSTI)

    Lillaney, Prasheel; Shin, Mihye; Conolly, Steven M.; Fahrig, Rebecca

    2012-09-15

    Purpose: Combining x-ray fluoroscopy and MR imaging systems for guidance of interventional procedures has become more commonplace. By designing an x-ray tube that is immune to the magnetic fields outside of the MR bore, the two systems can be placed in close proximity to each other. A major obstacle to robust x-ray tube design is correcting for the effects of the magnetic fields on the x-ray tube focal spot. A potential solution is to design active shielding that locally cancels the magnetic fields near the focal spot. Methods: An iterative optimization algorithm is implemented to design resistive active shielding coils that will be placed outside the x-ray tube insert. The optimization procedure attempts to minimize the power consumption of the shielding coils while satisfying magnetic field homogeneity constraints. The algorithm is composed of a linear programming step and a nonlinear programming step that are interleaved with each other. The coil results are verified using a finite element space charge simulation of the electron beam inside the x-ray tube. To alleviate heating concerns an optimized coil solution is derived that includes a neodymium permanent magnet. Any demagnetization of the permanent magnet is calculated prior to solving for the optimized coils. The temperature dynamics of the coil solutions are calculated using a lumped parameter model, which is used to estimate operation times of the coils before temperature failure. Results: For a magnetic field strength of 88 mT, the algorithm solves for coils that consume 588 A/cm{sup 2}. This specific coil geometry can operate for 15 min continuously before reaching temperature failure. By including a neodymium magnet in the design the current density drops to 337 A/cm{sup 2}, which increases the operation time to 59 min. Space charge simulations verify that the coil designs are effective, but for oblique x-ray tube geometries there is still distortion of the focal spot shape along with deflections of approximately 3 mm in the radial and circumferential directions on the anode. Conclusions: Active shielding is an attractive solution for correcting the effects of magnetic fields on the x-ray focal spot. If extremely long fluoroscopic exposure times are required, longer operation times can be achieved by including a permanent magnet with the active shielding design.

  1. Global Convergence of An Iterative Gradient Algorithm for The Nash Equilibrium in An

    E-Print Network [OSTI]

    Pavel, Lacra

    Global Convergence of An Iterative Gradient Algorithm for The Nash Equilibrium in An Extended OSNR constraints within a Nash game framework. In optical wavelength-division multiplexed (WDM) networks, all as the optical link capacity constraint. In our previous work in [1], we proposed an extended OSNR Nash game

  2. A Model-Based Iterative Algorithm for Dual-Energy X-Ray CT Reconstruction

    E-Print Network [OSTI]

    A Model-Based Iterative Algorithm for Dual-Energy X-Ray CT Reconstruction Ruoqiao Zhang, Jean, Senior Member, IEEE Abstract--Recent developments in dual-energy X-ray CT have shown a number of benefits the opportunity to reduce noise and artifacts in dual energy reconstructions. However, previous approaches

  3. International Workshop on MFE Roadmapping in the ITER Era Princeton University, McDonnell Hall

    E-Print Network [OSTI]

    International Workshop on MFE Roadmapping in the ITER Era Princeton University, McDonnell Hall Princeton, NJ, U.S.A. 7 -10 September 2011 Roadmap Agenda r12 20110910.doc Agenda Workshop Topics · Perspectives on Demo and the Roadmap to Demo · Technology: Basis, Gaps, Risks, and Facility Needs · Physics

  4. High-Steady-State Advanced Tokamak Regimes for ITER and FIRE D. M. Meade1

    E-Print Network [OSTI]

    FT High- Steady-State Advanced Tokamak Regimes for ITER and FIRE D. M. Meade1 , N. R. Sauthoff1 , C Institute of Technology, Cambridge, MA 02139, USA An attractive tokamak-based fusion power plant will require the development of high- steady- state advanced tokamak regimes to produce a high gain burning

  5. CS680: Value Iteration for Mountain Cars Due Feb. 21 (SURGE March 6)

    E-Print Network [OSTI]

    Anderson, Charles W.

    CS680: Value Iteration for Mountain Cars Due Feb. 21 (SURGE March 6) Introduction In this assignment, you will implement a simulated control system that learns to drive a simulated car out and back of the valley until the car gains enough momentum to get out. You will apply asynchronous value

  6. PPPL3246 Preprint: April 1997, UC420 THE PHYSICS ROLE OF ITER

    E-Print Network [OSTI]

    effective control of plasma purity and plasma­wall interactions. Achieving and sustaining burning plasma Reactor (ITER) will go far beyond what is possible on present­day tokamaks to address new and challenging regimes in a tokamak necessarily requires plasmas that are larger than those in present experiments

  7. PPPL-3246 -Preprint: April 1997, UC-420 THE PHYSICS ROLE OF ITER

    E-Print Network [OSTI]

    of plasma purity and plasma-wall interactions. Achieving and sustaining burning plasma regimes in a tokamak Reactor (ITER) will go far beyond what is possible on present-day tokamaks to address new and challenging will embrace the study of issues of plasma physics and plasma-materials interactions that are specific

  8. Amesos2 and Belos: Direct and Iterative Solvers for Large Sparse Linear Systems

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

    Bavier, Eric; Hoemmen, Mark; Rajamanickam, Sivasankaran; Thornquist, Heidi

    2012-01-01

    Solvers for large sparse linear systems come in two categories: direct and iterative. Amesos2, a package in the Trilinos software project, provides direct methods, and Belos, another Trilinos package, provides iterative methods. Amesos2 offers a common interface to many different sparse matrix factorization codes, and can handle any implementation of sparse matrices and vectors, via an easy-to-extend C++ traits interface. It can also factor matrices whose entries have arbitrary “Scalar” type, enabling extended-precision and mixed-precision algorithms. Belos includes many different iterative methods for solving large sparse linear systems and least-squares problems. Unlike competing iterative solver libraries, Belos completely decouples themore »algorithms from the implementations of the underlying linear algebra objects. This lets Belos exploit the latest hardware without changes to the code. Belos favors algorithms that solve higher-level problems, such as multiple simultaneous linear systems and sequences of related linear systems, faster than standard algorithms. The package also supports extended-precision and mixed-precision algorithms. Together, Amesos2 and Belos form a complete suite of sparse linear solvers.« less

  9. Iterative Security Risk Analysis for Network Flows Based on Provenance and Interdependency

    E-Print Network [OSTI]

    New South Wales, University of

    Iterative Security Risk Analysis for Network Flows Based on Provenance and Interdependency Mohsen high risk network flows and hosts in a high throughput network is a challenging task of network malicious and high risk network activities within a huge number of monitored network flows. To address

  10. EUR (03) CCE-FU 20/ ISAG ITER SITE ANALYSIS GROUP REPORT1

    E-Print Network [OSTI]

    compared to Vandellós. The standard French design for seismic isolation will however result in a marginal is characterised by slightly higher but fully acceptable seismic loads for both the ITER buildings and the tokamak if any cost increase. No seismic adaptations are required for Vandellós as the loads are well below

  11. Introduction L1-Minimization Reweighted L1 Main Results Noisy Signal Recovery via Iterative Reweighted

    E-Print Network [OSTI]

    Needell, Deanna

    Introduction L1-Minimization Reweighted L1 Main Results Noisy Signal Recovery via Iterative Reweighted L1 Main Results Problem Background Setup 1 Suppose x is an unknown signal in Rd. 2 Design;Introduction L1-Minimization Reweighted L1 Main Results Problem Background Setup 1 Suppose x is an unknown

  12. Fig.1a. Schematic picture of ITER tokamak, showing the toroidal main chamber,

    E-Print Network [OSTI]

    Lin, Zhihong

    Fig.1a. Schematic picture of ITER tokamak, showing the toroidal main chamber, material wall, and the small divertor chamber at the bottom of the main chamber Gyrokinetic particle simulation of neoclassical and b). The wall plates in the divertor chamber are periodically replaced, giving the main wall a much

  13. Perspectives on US program support of FNSF and ITER in coming decade

    E-Print Network [OSTI]

    would likely cost at least as much as U.S. contribution to ITER · Should have follow-up to ReNeW ReNeW in fusion energy science Jonathan Menard, PPPL Meeting of FESAC Subcommittee on MFE Priorities Public comment session Bethesda ­ Washington DC July 31st, 2012 1 #12;Perspective on Fusion Nuclear Science

  14. the Next Step for FE in China beyond ITER 10 -11 Dec.2013 Washington DC

    E-Print Network [OSTI]

    -sustained with TBR 1.2 Relay on existing ITER physicalk~1. 8-2, q > 3, H~1) and technical bases The goal of our design is to try to build the engineering testing reactor for fusion energy as early. CFETR will be one of the best test facility to develop the suitable materials for DEMO or FPP under

  15. An Iterative Image Registration Technique with an Application to Stereo Vision

    E-Print Network [OSTI]

    Granada, Universidad de

    121 An Iterative Image Registration Technique with an Application to Stereo Vision Bruce D. Lucas of the image, including rotation. We then describe a stereo vision system that uses this registration technique Abstract Image registration finds a variety of applications in computer vision. Unfortunately, traditional

  16. Print this article Close This Window EU OKs India joining ITER nuclear reactor project

    E-Print Network [OSTI]

    Print this article Close This Window EU OKs India joining ITER nuclear reactor project Fri Dec 2-billion-euro project to build an experimental nuclear fusion reactor that in the long-run could provide virtually unlimited, cheap and clean energy. The EU's willingness to work with India on a civil nuclear

  17. Iterative-Expansion A* Colin M. Potts and Kurt D. Krebsbach

    E-Print Network [OSTI]

    Krebsbach, Kurt D.

    Iterative-Expansion A* (IEA*), fo- cuses on reducing redundant node expansions within indi- vidual depth IEA* with several other competing approaches. We also sketch proofs of optimality and com- pleteness for IEA*, and note that IEA* is particularly ef- ficient for solving implicitly-defined general graph

  18. Joint News Release CHINA AND THE U.S. JOIN ITER NEGOTIATIONS

    E-Print Network [OSTI]

    in their efforts to reach agreement on the implementation of the ITER international fusion energy research project. Igor Borovkov, First Deputy Minister of the Russian Federation on Atomic Energy, welcomed all' commitment to developing fusion energy as a potential source of safe, secure and environmentally friendly

  19. Neil Calder -neil.calder@iter.org +33 6 14 16 41 75

    E-Print Network [OSTI]

    Members: China, the European Union, India, Japan, Korea, Russia and the United States under the chairmanship of Evgeny Velikhov (Russia) The meeting opened with a statement from Dr Wan Gang, Minister, the ITER Organization's draft budget for the next years, Export Control, Peaceful Uses and Non

  20. Two Novel Iterative Joint Frequency-Offset and Channel Estimation Methods for OFDMA Uplink

    E-Print Network [OSTI]

    Minn, Hlaing

    modified SAGE method yields a faster convergence rate, a better estimation performance, and a lower are not only better in estimation performance, convergence rate, and complexity, but also more robust two iterative joint estimators utilizing a cyclically equal-spaced, equal-energy interleaved pilot

  1. Europe et Japon au coude--coude pour accueillir le racteur ITER

    E-Print Network [OSTI]

    LE 18.12.03 | 13h1713h17 · La compétition pour l'implantation de la machine à fusion thermonucléaire expérimental à fusion thermonucléaire ITER. S'il fait penser à la hampe d'un drapeau fichée sur un sommet spécialistes - dont une cinquantaine d'experts étrangers - de la fusion thermonucléaire, qui viennent d

  2. Home National Sports Business World Features Columns Editorial Japan has key role in ITER project

    E-Print Network [OSTI]

    would house a mass of precision machines used to control the colossal amount of energy it would generateHome National Sports Business World Features Columns Editorial Top Japan has key role in ITER reactor has been settled after a contest lasting several years between Japan and the European Union

  3. Improved Confinement in JET High {beta} Plasmas with an ITER-Like Wall

    E-Print Network [OSTI]

    Challis, C D; Beurskens, M; Buratti, P; Delabie, E; Drewelow, P; Frassinetti, L; Giroud, C; Hawkes, N; Hobirk, J; Joffrin, E; Keeling, D; King, D B; Maggi, C F; Mailloux, J; Marchetto, C; McDonald, D; Nunes, I; Pucella, G; Saarelma, S; Simpson, J

    2015-01-01

    The replacement of the JET carbon wall (C-wall) by a Be/W ITER-like wall (ILW) has affected the plasma energy confinement. To investigate this, experiments have been performed with both the C-wall and ILW to vary the heating power over a wide range for plasmas with different shapes.

  4. A Decade of Progress in Iterative Process Control Design : from Theory to Practice

    E-Print Network [OSTI]

    Gevers, Michel

    A Decade of Progress in Iterative Process Control Design : from Theory to Practice Michel Gevers a on Identification (Gevers, 1991) 1 The last ten years have seen the emergence of robust control theory as a ma- jor for some time. The sur- prising fact is that much of robust control theory is based on prior descriptions

  5. Electric current density imaging via an accelerated iterative algorithm with joint sparsity constraints

    E-Print Network [OSTI]

    Bretti, Gabriella

    current flow. Similarly, in nondestructive testing cracks and corrosion damage in a structure resultElectric current density imaging via an accelerated iterative algorithm with joint sparsity sciences require to map the spatial distribution of electric currents flowing through a given sample

  6. Investigating the Impact of Changes in Iteration-likelihoods on Design Process Performance

    E-Print Network [OSTI]

    Shapiro, Daniel; Hamraz, Bahram; Sommer, Anita F.; Clarkson, P. John

    2015-01-01

    1 Investigating the Impact of Changes in Iteration-likelihoods on Design Process Performance Authors: Daniel Shapiro(1) (corresponding author, ds678@cam.ac.uk, +447922058809), Bahram Hamraz(2) (bh351@cam.ac.uk), Anita F. Sommer(1) (afs35@cam...

  7. Implementation of Iterative Map turbo Decoder on TMS320C40 DSP 

    E-Print Network [OSTI]

    Patil, Sunil S

    1997-01-01

    . The main objective of this thesis is the implementation of an Iterative MAP turbo Decoder on a digital signal processor, TMS32OC40. Performance of the decoder was tested over an additive white gaussian noise channel and using a binary phase shift keying...

  8. BPO Inputs to ITER Design Review on Pellet Pacing, RMP and RWM Coils,

    E-Print Network [OSTI]

    BPO Inputs to ITER Design Review on Pellet Pacing, RMP and RWM Coils, and Disruption Mitigation Collaboration Essential Ingredient Contributions to Pellet Pacing USBPO: L. Baylor and P. Parks EU: P. Lang, A the acceptable energy loss from ELMs. Reducing the energy loss to pellet pacing is challenging. DIII

  9. Evolving Cooperation in the Non-Iterated Prisoner's Dilemma: A Social Network Inspired Approach

    E-Print Network [OSTI]

    Yao, Xin

    Evolving Cooperation in the Non-Iterated Prisoner's Dilemma: A Social Network Inspired Approach T to significantly improve cooperation rates in the one-shot game of prisoner's dilemma, where without the benefits associated with a decentralised network are lost. B. Prisoner's Dilemma There are many existing

  10. PUBLISHED VERSION Overview of LH experiments in JET with an ITER-like wall

    E-Print Network [OSTI]

    . The impact of these contributions on the performance of the auxiliary heating systems and the main achievements by these were reviewed in [2]. The main aspects of the operation of the Lower Hybrid (LH) system Republic Abstract: An overview of the recent results of Lower Hybrid (LH) experiments at JET with the ITER

  11. A REAL-TIME ITERATION SCHEME FOR NONLINEAR OPTIMIZATION IN OPTIMAL FEEDBACK CONTROL

    E-Print Network [OSTI]

    " and within the research project "Optimization Based Control of Chemical Processes." httpA REAL-TIME ITERATION SCHEME FOR NONLINEAR OPTIMIZATION IN OPTIMAL FEEDBACK CONTROL MORITZ DIEHL, HANS GEORG BOCK, AND JOHANNES P. SCHL¨ODER SIAM J. CONTROL OPTIM. c 2005 Society for Industrial

  12. Convergence Proof of Jacobi Iterative Method for A Discretized 2D ConvectionDiffusion Equation \\Lambda

    E-Print Network [OSTI]

    Zhang, Jun

    Convergence Proof of Jacobi Iterative Method for A Discretized 2D Convection­Diffusion Equation \\Lambda Deyu Sang, y Jun Zhang, z and Shiqing Zhang y July 16, 1998 Abstract We prove that the Jacobi been verified numerically but evaded rigorous justification for almost two decades. Key words: Jacobi

  13. Fixed-point iterative sweeping methods for static Hamilton-Jacobi equations

    E-Print Network [OSTI]

    Zhang, Yong-Tao

    Fixed-point iterative sweeping methods for static Hamilton-Jacobi equations Yong-Tao Zhang1 , Hong for computations of static Hamilton-Jacobi equations. They take advantage of the properties of hyperbolic PDEs and try to cover a family of characteristics of the corresponding Hamilton-Jacobi equation in a certain

  14. IAEA-CN-77/ITEROV/1 ITER-FEAT -The Future International Burning Plasma Experiment

    E-Print Network [OSTI]

    -particles become the main source of plasma heating and the principal determinant of plasma behaviour. Aymar 1), V. Chuyanov1), M. Huguet 2), Y. Shimomura 2) for the ITER Joint Central Team and Home Teams 1 results and outputs from technology R&D projects, the Joint Central Team and Home Teams, working jointly

  15. 846 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 42, NO. 4, APRIL 1994 Iterative and Sequential Algorithms

    E-Print Network [OSTI]

    Feder, Meir

    846 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 42, NO. 4, APRIL 1994 Iterative and Sequential Algorithms for Multisensor Signal Enhancement Bhud Weinstein, Fellow, IEEE, ,Alan V. Oppenheim, Fellow, IEEE of enhancing a desired signal in the presence of noise, multiple sensor measurements will typically have

  16. 26th Symposium on Fusion Technology SOFT2010, Porto, Portugal The Remote Handling Systems for ITER

    E-Print Network [OSTI]

    Ribeiro,Isabel

    - for removal of components Refurbishment or disposal as radwaste is introduced through the ports at the three levels RH Equipment #12;RH Systems for ITER 5 Hot Cell Building (HCB) Refurbishment or disposal to HCB for refurbishment (First Wall exchange) or disposal as radwaste ­ Bolting/unbolting ­ Cooling

  17. AUTOMATIC PARAMETER SETTING FOR ITERATIVE SHRINKAGE METHODS Raja Giryes, Michael Elad

    E-Print Network [OSTI]

    Eldar, Yonina

    AUTOMATIC PARAMETER SETTING FOR ITERATIVE SHRINKAGE METHODS Raja Giryes, Michael Elad Technion- dressed the automatic tuning of based on a generalized Stein Unbiased Risk Estimator (SURE) of the mean. We also show that the proposed scheme serves as a very reliable automatic halting mechanism

  18. Generics, habituals, and iteratives Sentences may express information about particular events, such as

    E-Print Network [OSTI]

    Makous, Walter

    cough or flap (a wing)'. In English, John coughed can be understood as saying that he coughed once implications, especially those of intensity and/or prolongation. In English, John coughed and coughed is iterative in interpretation, like one understanding of the simple John coughed, but in addition implies

  19. Design, manufacture and initial operation of the beryllium components of the JET ITER-like wall

    E-Print Network [OSTI]

    Riccardo, V; Matthews, G F; Nunes, I; Thompson, V; Villedieu, E; Contributors, JET EFDA

    2013-01-01

    The aim of the JET ITER-like Wall Project was to provide JET with the plasma facing material combination now selected for the DT phase of ITER (bulk beryllium main chamber limiters and a full tungsten divertor) and, in conjunction with the upgraded neutral beam heating system, to achieve ITER relevant conditions. The design of the bulk Be plasma facing components had to be compatible with increased heating power and pulse length, as well as to reuse the existing tile supports originally designed to cope with disruption loads from carbon based tiles and be installed by remote handling. Risk reduction measures (prototypes, jigs, etc) were implemented to maximize efficiency during the shutdown. However, a large number of clashes with existing components not fully captured by the configuration model occurred. Restarting the plasma on the ITER-like Wall proved much easier than for the carbon wall and no deconditioning by disruptions was observed. Disruptions have been more threatening than expected due to the redu...

  20. Adopting iterative development: the perceived business Caryna Pinheiro, Frank Maurer, Jonathan Sillito

    E-Print Network [OSTI]

    Sillito, Jonathan

    processes that have been successfully implemented by others, to reduce the risk of failure [1]. The company under study is a large Oil & Gas government agency that lacked the initial management support to adopt an iterative development approach as well as the degree of formality and traceability desired by the top

  1. Exhibit 9ED -Technical Data -ITER UT-B Contracts Div Page 1 of 5

    E-Print Network [OSTI]

    listings, design details, algorithms, processes, flow charts, formulae, and related material that would charts of the software. (5) "Limited rights data," as used in this clause, means data, other than) "Member," as used in this clause, means members of the ITER Organization who are parties to the Agreement

  2. Exhibit 9 Technical Data ITER UT-B Contracts Div Page 1 of 5

    E-Print Network [OSTI]

    , processes, flow charts, formulae, and related material that would enable the computer program to be produced the source code, algorithm, process, formulae, and flow charts of the software. (5) "Limited rights data Organization who are parties to the Agreement on the Establishment of the ITER International Fusion Energy

  3. Fusion Power Associates Annual Meeting and Symposium Fusion Energy: Preparing for the NIF and ITER Era

    E-Print Network [OSTI]

    Materials Labs ­ S. Zinkle Fusion Technology ­ S. Milora 5:30 Depart ORNL 6:00 Reception 7:30 Board:50 Preparations for NIF Ignition Campaign ­ John Lindl, LLNL 9:10 Status of Z-Pinch Research ­ Keith Matzen Technology Program­ Stan Milora, ORNL 1:40 Issues and Opportunities from ITER Review ­ R. Hawryluk, PPPL 2

  4. Improving retinal image resolution with iterative weighted shift-and-add

    E-Print Network [OSTI]

    Ribak, Erez

    1 Improving retinal image resolution with iterative weighted shift-and-add Nizan Meitav1 High-resolution retinal imaging requires dilating the pupil, and therefore exposing more aberrations that blur the image. We developed an image processing technique that takes advantage of the natu- ral

  5. Nebraska Statewide Wind Integration Study: April 2008 - January 2010

    SciTech Connect (OSTI)

    EnerNex Corporation, Knoxville, Tennessee; Ventyx, Atlanta, Georgia; Nebraska Power Association, Lincoln, Nebraska

    2010-03-01

    Wind generation resources in Nebraska will play an increasingly important role in the environmental and energy security solutions for the state and the nation. In this context, the Nebraska Power Association conducted a state-wide wind integration study.

  6. Path Integral Representations on the Complex Sphere

    E-Print Network [OSTI]

    Christian Grosche

    2007-10-23

    In this paper we discuss the path integral representations for the coordinate systems on the complex sphere S3C. The Schroedinger equation, respectively the path integral, separates in exactly 21 orthogonal coordinate systems. We enumerate these coordinate systems and we are able to present the path integral representations explicitly in the majority of the cases. In each solution the expansion into the wave-functions is stated. Also, the kernel and the corresponding Green function can be stated in closed form in terms of the invariant distance on the sphere, respectively on the hyperboloid.

  7. The Lorentz Integral Transform and its Inversion

    E-Print Network [OSTI]

    N. Barnea; V. D. Efros; W. Leidemann; G. Orlandini

    2009-12-23

    The Lorentz integral transform method is briefly reviewed. The issue of the inversion of the transform, and in particular its ill-posedness, is addressed. It is pointed out that the mathematical term ill-posed is misleading and merely due to a historical misconception. In this connection standard regularization procedures for the solution of the integral transform problem are presented. In particular a recent one is considered in detail and critical comments on it are provided. In addition a general remark concerning the concept of the Lorentz integral transform as a method with a controlled resolution is made.

  8. Characterization of a commercial hybrid iterative and model-based reconstruction algorithm in radiation oncology

    SciTech Connect (OSTI)

    Price, Ryan G.; Vance, Sean; Cattaneo, Richard; Elshaikh, Mohamed A.; Chetty, Indrin J.; Glide-Hurst, Carri K.; Schultz, Lonni

    2014-08-15

    Purpose: Iterative reconstruction (IR) reduces noise, thereby allowing dose reduction in computed tomography (CT) while maintaining comparable image quality to filtered back-projection (FBP). This study sought to characterize image quality metrics, delineation, dosimetric assessment, and other aspects necessary to integrate IR into treatment planning. Methods: CT images (Brilliance Big Bore v3.6, Philips Healthcare) were acquired of several phantoms using 120 kVp and 25–800 mAs. IR was applied at levels corresponding to noise reduction of 0.89–0.55 with respect to FBP. Noise power spectrum (NPS) analysis was used to characterize noise magnitude and texture. CT to electron density (CT-ED) curves were generated over all IR levels. Uniformity as well as spatial and low contrast resolution were quantified using a CATPHAN phantom. Task specific modulation transfer functions (MTF{sub task}) were developed to characterize spatial frequency across objects of varied contrast. A prospective dose reduction study was conducted for 14 patients undergoing interfraction CT scans for high-dose rate brachytherapy. Three physicians performed image quality assessment using a six-point grading scale between the normal-dose FBP (reference), low-dose FBP, and low-dose IR scans for the following metrics: image noise, detectability of the vaginal cuff/bladder interface, spatial resolution, texture, segmentation confidence, and overall image quality. Contouring differences between FBP and IR were quantified for the bladder and rectum via overlap indices (OI) and Dice similarity coefficients (DSC). Line profile and region of interest analyses quantified noise and boundary changes. For two subjects, the impact of IR on external beam dose calculation was assessed via gamma analysis and changes in digitally reconstructed radiographs (DRRs) were quantified. Results: NPS showed large reduction in noise magnitude (50%), and a slight spatial frequency shift (?0.1 mm{sup ?1}) with application of IR at L6. No appreciable changes were observed for CT-ED curves between FBP and IR levels [maximum difference ?13 HU for bone (?1% difference)]. For uniformity, differences were ?1 HU between FBP and IR. Spatial resolution was well conserved; the largest MTF{sub task} decrease between FBP and IR levels was 0.08 A.U. No notable changes in low-contrast detectability were observed and CNR increased substantially with IR. For the patient study, qualitative image grading showed low-dose IR was equivalent to or slightly worse than normal dose FBP, and is superior to low-dose FBP (p < 0.001 for noise), although these did not translate to differences in CT number, contouring ability, or dose calculation. The largest CT number discrepancy from FBP occurred at a bone/tissue interface using the most aggressive IR level [?1.2 ± 4.9 HU (range: ?17.6–12.5 HU)]. No clinically significant contour differences were found between IR and FBP, with OIs and DSCs ranging from 0.85 to 0.95. Negligible changes in dose calculation were observed. DRRs preserved anatomical detail with <2% difference in intensity from FBP combined with aggressive IRL6. Conclusions: These results support integrating IR into treatment planning. While slight degradation in edges and shift in texture were observed in phantom, patient results show qualitative image grading, contouring ability, and dosimetric parameters were not adversely affected.

  9. Nonlinear Integral-Equation Formulation of Orthogonal Polynomials

    E-Print Network [OSTI]

    Carl M. Bender; E. Ben-Naim

    2006-11-15

    The nonlinear integral equation P(x)=\\int_alpha^beta dy w(y) P(y) P(x+y) is investigated. It is shown that for a given function w(x) the equation admits an infinite set of polynomial solutions P(x). For polynomial solutions, this nonlinear integral equation reduces to a finite set of coupled linear algebraic equations for the coefficients of the polynomials. Interestingly, the set of polynomial solutions is orthogonal with respect to the measure x w(x). The nonlinear integral equation can be used to specify all orthogonal polynomials in a simple and compact way. This integral equation provides a natural vehicle for extending the theory of orthogonal polynomials into the complex domain. Generalizations of the integral equation are discussed.

  10. Iterative acceleration methods for Monte Carlo and deterministic criticality calculations

    SciTech Connect (OSTI)

    Urbatsch, T.J.

    1995-11-01

    If you have ever given up on a nuclear criticality calculation and terminated it because it took so long to converge, you might find this thesis of interest. The author develops three methods for improving the fission source convergence in nuclear criticality calculations for physical systems with high dominance ratios for which convergence is slow. The Fission Matrix Acceleration Method and the Fission Diffusion Synthetic Acceleration (FDSA) Method are acceleration methods that speed fission source convergence for both Monte Carlo and deterministic methods. The third method is a hybrid Monte Carlo method that also converges for difficult problems where the unaccelerated Monte Carlo method fails. The author tested the feasibility of all three methods in a test bed consisting of idealized problems. He has successfully accelerated fission source convergence in both deterministic and Monte Carlo criticality calculations. By filtering statistical noise, he has incorporated deterministic attributes into the Monte Carlo calculations in order to speed their source convergence. He has used both the fission matrix and a diffusion approximation to perform unbiased accelerations. The Fission Matrix Acceleration method has been implemented in the production code MCNP and successfully applied to a real problem. When the unaccelerated calculations are unable to converge to the correct solution, they cannot be accelerated in an unbiased fashion. A Hybrid Monte Carlo method weds Monte Carlo and a modified diffusion calculation to overcome these deficiencies. The Hybrid method additionally possesses reduced statistical errors.

  11. Solution mass measurement

    SciTech Connect (OSTI)

    Ford, W.; Marshall, R.S.; Osborn, L.C.; Picard, R.; Thomas, C.C. Jr.

    1982-07-01

    This report describes the efforts to develop and demonstrate a solution mass measurement system for use at the Los Alamos Plutonium Facility. Because of inaccuracy of load cell measurements, our major effort was directed towards the pneumatic bubbler tube. The differential pressure between the air inlet to the bubbler tube and the glovebox interior is measured and is proportional to the solution mass in the tank. An inexpensive, reliable pressure transducer system for measuring solution mass in vertical, cylindrical tanks was developed, tested, and evaluated in a laboratory test bed. The system can withstand the over- and underpressures resulting from solution transfer operations and can prevent solution backup into the measurement pressure transducer during transfers. Drifts, noise, quantization error, and other effects limit the accuracy to 30 g. A transportable calibration system using a precision machined tank, pneumatic bubbler tubes, and a Ruska DDR 6000 electromanometer was designed, fabricated, tested, and evaluated. Resolution of the system is +-3.5 g out of 50 kg. The calibration error is 5 g, using room-temperature water as the calibrating fluid. Future efforts will be directed towards in-plant test and evaluation of the tank measurement systems. 16 figures, 3 tables.

  12. 354 Int. J. Computing Science and Mathematics, Vol. 2, No. 4, 2009 An iterative method for solving Fredholm integral

    E-Print Network [OSTI]

    of more than 580 papers, 2 patents, 12 monographs, an editor of 3 books, and an Associate Editor in Mathematics, was Mercator Professor, Distinguished Visiting Professor supported by the Royal Academy

  13. DCLL TBM Safety Assessment A key objective for ITER includes integrated testing of blanket concepts suitable for demonstrating fusion

    E-Print Network [OSTI]

    . A DCLL TBS Failure Modes and Effects Analysis was summarized and design basis events based on this FMEA

  14. Fissile solution measurement apparatus

    DOE Patents [OSTI]

    Crane, T.W.; Collinsworth, P.R.

    1984-06-11

    An apparatus for determining the content of a fissile material within a solution by detecting delayed fission neutrons emitted by the fissile material after it is temporarily irradiated by a neutron source. The apparatus comprises a container holding the solution and having a portion defining a neutron source cavity centrally disposed within the container. The neutron source cavity temporarily receives the neutron source. The container has portions defining a plurality of neutron detector ports that form an annular pattern and surround the neutron source cavity. A plurality of neutron detectors count delayed fission neutrons emitted by the fissile material. Each neutron detector is located in a separate one of the neutron detector ports.

  15. An exact isotropic solution

    E-Print Network [OSTI]

    A. J. John; S. D. Maharaj

    2006-02-08

    The condition for pressure isotropy is reduced to a recurrence equation with variable, rational coefficients of order three. We prove that this difference equation can be solved in general. Consequently we can find an exact solution to the field equations corresponding to a static spherically symmetric gravitational potential in terms of elementary functions. The metric functions, the energy density and the pressure are continuous and well behaved which implies that this solution could be used to model the interior of a relativistic sphere. The model satisfies a barotropic equation of state in general which approximates a polytrope close to the stellar centre.

  16. Integral Invariant Signatures

    E-Print Network [OSTI]

    S. Manay; A. J. Yezzi; B. W. Hong; S. Soatto

    2004-01-01

    Projective curvature and integral invariants. IJCV, 40(3):a database of 23 shapes. Integral Invariant Signatures 7. A.C. Lopez, and J. M. Morel. Integral and local a?ne invariant

  17. Integral invariant signatures

    E-Print Network [OSTI]

    Manay, S; Hong, B W; Yezzi, A J; Soatto, Stefano

    2004-01-01

    Projective curvature and integral invariants. IJCV, 40(3):a database of 23 shapes. Integral Invariant Signatures 7. A.C. Lopez, and J. M. Morel. Integral and local a?ne invariant

  18. Iterative electromagnetic Born inversion applied to earth conductivity imaging

    SciTech Connect (OSTI)

    Alumbaugh, D.L.

    1993-08-01

    This thesis investigates the use of a fast imaging technique to deduce the spatial conductivity distribution in the earth from low frequency (< 1 MHz), cross well electromagnetic (EM) measurements. The theory embodied in this work is the extension of previous strategies and is based on the Born series approximation to solve both the forward and inverse problem. Nonlinear integral equations are employed to derive the series expansion which accounts for the scattered magnetic fields that are generated by inhomogeneities embedded in either a homogenous or a layered earth. A sinusoidally oscillating, vertically oriented magnetic dipole is employed as a source, and it is assumed that the scattering bodies are azimuthally symmetric about the source dipole axis. The use of this model geometry reduces the 3-D vector problem to a more manageable 2-D scalar form. The validity of the cross well EM method is tested by applying the imaging scheme to two sets of field data. Images of the data collected at the Devine, Texas test site show excellent correlation with the well logs. Unfortunately there is a drift error present in the data that limits the accuracy of the results. A more complete set of data collected at the Richmond field station in Richmond, California demonstrates that cross well EM can be successfully employed to monitor the position of an injected mass of salt water. Both the data and the resulting images clearly indicate the plume migrates toward the north-northwest. The plausibility of these conclusions is verified by applying the imaging code to synthetic data generated by a 3-D sheet model.

  19. Reducing the effects of acoustic heterogeneity with an iterative reconstruction method from experimental data in microwave induced thermoacoustic tomography

    SciTech Connect (OSTI)

    Wang, Jinguo; Zhao, Zhiqin Song, Jian; Chen, Guoping; Nie, Zaiping; Liu, Qing-Huo

    2015-05-15

    Purpose: An iterative reconstruction method has been previously reported by the authors of this paper. However, the iterative reconstruction method was demonstrated by solely using the numerical simulations. It is essential to apply the iterative reconstruction method to practice conditions. The objective of this work is to validate the capability of the iterative reconstruction method for reducing the effects of acoustic heterogeneity with the experimental data in microwave induced thermoacoustic tomography. Methods: Most existing reconstruction methods need to combine the ultrasonic measurement technology to quantitatively measure the velocity distribution of heterogeneity, which increases the system complexity. Different to existing reconstruction methods, the iterative reconstruction method combines time reversal mirror technique, fast marching method, and simultaneous algebraic reconstruction technique to iteratively estimate the velocity distribution of heterogeneous tissue by solely using the measured data. Then, the estimated velocity distribution is used subsequently to reconstruct the highly accurate image of microwave absorption distribution. Experiments that a target placed in an acoustic heterogeneous environment are performed to validate the iterative reconstruction method. Results: By using the estimated velocity distribution, the target in an acoustic heterogeneous environment can be reconstructed with better shape and higher image contrast than targets that are reconstructed with a homogeneous velocity distribution. Conclusions: The distortions caused by the acoustic heterogeneity can be efficiently corrected by utilizing the velocity distribution estimated by the iterative reconstruction method. The advantage of the iterative reconstruction method over the existing correction methods is that it is successful in improving the quality of the image of microwave absorption distribution without increasing the system complexity.

  20. Distribution Grid Integration

    Broader source: Energy.gov [DOE]

    The DOE Systems Integration team funds distribution grid integration research and development (R&D) activities to address the technical issues that surround distribution grid planning,...