Powered by Deep Web Technologies
Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Indonesia-GTZ Mini-Hydropower Schemes for Sustainable Economic Development  

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 CenterFranconia, Virginia: Energy Resources Jump to:46 - 429 Throttled (bot load) Error 429Indiana WindIndonesia| Open Energy

2

Indonesia-GTZ Emissions Reductions in Urban Transport | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 - 429 Throttled (bot load) Error 429Indiana WindIndonesia

3

Car Sharing Scheme Car Share Scheme  

E-Print Network [OSTI]

Car Sharing Scheme Car Share Scheme The cost is now reduced to £10 per member of staff per share but only own one vehicle between them do not qualify for the car share scheme. A commitment is required for all members of the scheme to car share at all times when they are in work each working day

Martin, Ralph R.

4

Efficient Metering Schemes with Pricing  

E-Print Network [OSTI]

Efficient Metering Schemes with Pricing Barbara Masucci Dipartimento di Informatica ed Applicazioni and Pinkas [7] introduced metering schemes. They proposed metering schemes in which any server is able and proposed metering schemes with pricing. In their schemes any server is able to construct a proof which

Stinson, Douglas

5

Compact Spreader Schemes  

SciTech Connect (OSTI)

This paper describes beam distribution schemes adopting a novel implementation based on low amplitude vertical deflections combined with horizontal ones generated by Lambertson-type septum magnets. This scheme offers substantial compactness in the longitudinal layouts of the beam lines and increased flexibility for beam delivery of multiple beam lines on a shot-to-shot basis. Fast kickers (FK) or transverse electric field RF Deflectors (RFD) provide the low amplitude deflections. Initially proposed at the Stanford Linear Accelerator Center (SLAC) as tools for beam diagnostics and more recently adopted for multiline beam pattern schemes, RFDs offer repetition capabilities and a likely better amplitude reproducibility when compared to FKs, which, in turn, offer more modest financial involvements both in construction and operation. Both solutions represent an ideal approach for the design of compact beam distribution systems resulting in space and cost savings while preserving flexibility and beam quality.

Placidi, M.; Jung, J. -Y.; Ratti, A.; Sun, C.

2014-07-25T23:59:59.000Z

6

Matrix subdivision schemes Albert Cohen  

E-Print Network [OSTI]

in the analysis of multivariate scalar schemes, in subdivision processes corresponding to shift­invariant spaces extension of the well studied case of subdivision schemes with scalar masks. Such schemes arise of \\Phi. 1 #12; 1.Introduction Matrix subdivision schemes play an important role in the analysis of mul

Cohen, Albert

7

A DAW lockout scheme  

SciTech Connect (OSTI)

In it`s document TR-105834, Project 24414 dated November 1995 and titled {open_quotes}Zero Plastics and the Radiologically Protected Area Low Level Waste Lockout Program{close_quotes}, EPRI describes DAW lockout as a {open_quotes}very advanced{close_quotes} and {open_quotes}perhaps the most powerful of all approaches to LLW minimization.{close_quotes} The report discusses implementation of a lockout program at Kewaunee, LaSalle and Zion stations but states that {open_quotes}no quantifiable results{close_quotes} were available at time of report printing. Waterford 3 Nuclear Station began implementing a limited lockout scheme in 1993. This paper presents Waterford`s experience and results achieved through the lockout approach.

Landeche, D.A. [Entergy Operations, Inc., Killona, LA (United States)

1996-10-01T23:59:59.000Z

8

Classification Schemes for Collection Mediation  

E-Print Network [OSTI]

of the author. #12;Abstract Work domain analysis and work centered design is a new approach to designClassification Schemes for Collection Mediation: Work Centered Design and Cognitive Work Analysis science. #12;Classification Schemes for Collection Mediation: Cognitive Work Analysis and Work Centered

9

Forestry Commission Disability Equality Scheme  

E-Print Network [OSTI]

Forestry Commission Disability Equality Scheme 2009-2012 #12;CONTENTS Page · Foreword by the Forestry Commissioners 3 · Introduction 4 · The Forestry Commission's Structure 9 · Legal Obligations 12 20 · The Forestry Commission as a Service Provider 22 · The Forestry Commission as an Employer 23

10

Adaptive biorthogonal spline schemes for advectionreaction equations  

E-Print Network [OSTI]

equations arise from petroleum reservoir simulation, ground- water contaminant remediation, and many other schemes produce accurate numerical solutions even if large time steps are used. These schemes are explicit numerical difficulties. Standard numerical methods produce either excessive nonphysical oscillations

11

National Forest Land Scheme Note on ballots  

E-Print Network [OSTI]

for renewable energy schemes a ballot will be required where the scheme has a Gross income of more than £50B) (Section 1.15 page 40) (http://www.scotland.gov.uk/Topics/farmingrural/Rural/rural

12

Metering Schemes for General Access Structures  

E-Print Network [OSTI]

Metering Schemes for General Access Structures Barbara Masucci Dipartimento di Informatica ed, Canada E­mail: dstinson@cacr.math.uwaterloo.ca Abstract A metering scheme is a method by which an audit time frame. In this paper we construct metering schemes for more general access structures, which

Stinson, Douglas

13

Sustainable Energy Scheme Mentor Job description  

E-Print Network [OSTI]

1 Sustainable Energy Scheme Mentor Job description Department: Student Administration and Registry and agreement between the Sustainable Energy Scheme Mentor and the UK Student Recruitment and Outreach Team Sustainable Energy Scheme To participate in both on and off campus mentoring activities throughout

Anderson, Jim

14

Hybrid Signcryption Schemes With Outsider Security  

E-Print Network [OSTI]

Hybrid Signcryption Schemes With Outsider Security (Extended Abstract) Alexander W. Dent.dent@rhul.ac.uk Abstract. This paper expands the notion of a KEM­DEM hybrid en- cryption scheme to the signcryption setting by introducing the notion of a signcryption KEM, a signcryption DEM and a hybrid signcryption scheme. We present

Dent, Alexander W.

15

Purely Algebraic Method to Construct Toric Schemes  

E-Print Network [OSTI]

In this article, we first give some elementary proprieties of monoids and fans, then construct a toric scheme over an arbitrary ring, from a given fan. Using Valuative Criterion, we prove that this scheme is separated and give the sufficient and necessary condition when it is proper. We also study the regularity and logarithmic regularity of it. Finally we study the morphisms of toric schemes induced by the homomorphisms of fans.

Li, Ting

2007-01-01T23:59:59.000Z

16

High-Order Energy Stable WENO Schemes  

E-Print Network [OSTI]

A third-order Energy Stable Weighted Essentially Non--Oscillatory (ESWENO) finite difference scheme developed by the authors of the paper [N. K. Yamaleev...

17

Optimization Online - Total variation superiorization schemes in ...  

E-Print Network [OSTI]

Oct 8, 2010 ... Total variation superiorization schemes in proton computed tomography ... check improved the image quality, in particular image noise, in the...

S.N. Penfold

2010-10-08T23:59:59.000Z

18

ON DIFFERENCE SCHEMES AND SYMPLECTIC GEOMETRY \\Gamma  

E-Print Network [OSTI]

ON DIFFERENCE SCHEMES AND SYMPLECTIC GEOMETRY \\Gamma \\Sigma \\Delta \\Theta \\Lambda \\Upsilon \\Psi solution of the canonical system of equations dp i dt = \\Gamma @H @q i ; dq i dt = @H @P i ; i = 1; \\Delta introduced by Hamilton in 1824 as a general mathematical scheme for problems of geometrical optics

Li, Tiejun

19

Finite volume renormalization scheme for fermionic operators  

SciTech Connect (OSTI)

We propose a new finite volume renormalization scheme. Our scheme is based on the Gradient Flow applied to both fermion and gauge fields and, much like the Schr\\"odinger functional method, allows for a nonperturbative determination of the scale dependence of operators using a step-scaling approach. We give some preliminary results for the pseudo-scalar density in the quenched approximation.

Monahan, Christopher; Orginos, Kostas [JLAB

2013-11-01T23:59:59.000Z

20

Conservation Scheme for sigma Ocean Models  

E-Print Network [OSTI]

Conservation Scheme for sigma Ocean Models (Finite Volume Consideration for Pressure Gradient Force for the Finite Volume · Flux Conservation #12;Dynamic and Thermodynamic Equations · Continuity · Momentum

Chu, Peter C.

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Topology optimization of building bracing schemes  

E-Print Network [OSTI]

The thesis presents a technique for producing economical solutions for conventional structural steel frames using topology optimization on the lateral bracing scheme. The study focuses mainly on minimizing the amount of ...

Goo, Zhen John

2013-01-01T23:59:59.000Z

22

On compact generation of deformed schemes.  

E-Print Network [OSTI]

We obtain a theorem which allows to prove compact generation of derived categories of Grothendieck categories, based upon certain coverings by localizations. This theorem follows from an application of Rouquier's cocovering theorem in the triangulated context, and it implies Neeman's result on compact generation of quasi-compact separated schemes. We prove an application of our theorem to non-commutative deformations of such schemes, based upon a change from Koszul complexes to Chevalley-Eilenberg complexes.

Wendy Lowen; Michel Van den Bergh

23

automatic scheme selection: Topics by E-print Network  

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

register management in the interpreter, allows ... Berlin, Andrew A. 1988-04-01 154 Car Sharing Scheme Car Share Scheme Computer Technologies and Information Sciences...

24

admission control scheme: Topics by E-print Network  

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

maximum power point tracking, partial feedback linearizing Pota, Himanshu Roy 439 Car Sharing Scheme Car Share Scheme Computer Technologies and Information Sciences...

25

active interferometer-stabilization scheme: Topics by E-print...  

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

register management in the interpreter, allows ... Berlin, Andrew A. 1988-04-01 29 Car Sharing Scheme Car Share Scheme Computer Technologies and Information Sciences...

26

apprenticeship scheme honoured: Topics by E-print Network  

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

register management in the interpreter, allows ... Berlin, Andrew A. 1988-04-01 187 Car Sharing Scheme Car Share Scheme Computer Technologies and Information Sciences...

27

Higher-order schemes with CIP method and adaptive Soroban grid towards mesh-free scheme  

E-Print Network [OSTI]

Higher-order schemes with CIP method and adaptive Soroban grid towards mesh-free scheme Takashi with the help of the CIP (constrained interpolation profile/cubic interpolated propagation) method. The grid in Japanese. The length of each line and the number of grid points in each line can be different. The CIP

Yabe, Takashi

28

Evaluation of the Hydro-Thermodynamic Soil Vegetation Scheme and implementation of a new numerical scheme  

E-Print Network [OSTI]

ii Evaluation of the Hydro-Thermodynamic Soil Vegetation Scheme and implementation of a new.S. Fairbanks, Alaska August 2005 #12;iii Abstract The Hydro-Thermodynamic Soil-Vegetation Scheme (HTSVS........................................................................................................................... 24 Evaluation of snow depth and soil temperatures predicted by the Hydro- Thermodynamic Soil

Moelders, Nicole

29

Cooling scheme for turbine hot parts  

DOE Patents [OSTI]

A closed-loop cooling scheme for cooling stationary combustion turbine components, such as vanes, ring segments and transitions, is provided. The cooling scheme comprises: (1) an annular coolant inlet chamber, situated between the cylinder and blade ring of a turbine, for housing coolant before being distributed to the turbine components; (2) an annular coolant exhaust chamber, situated between the cylinder and the blade ring and proximate the annular coolant inlet chamber, for collecting coolant exhaust from the turbine components; (3) a coolant inlet conduit for supplying the coolant to said coolant inlet chamber; (4) a coolant exhaust conduit for directing coolant from said coolant exhaust chamber; and (5) a piping arrangement for distributing the coolant to and directing coolant exhaust from the turbine components. In preferred embodiments of the invention, the cooling scheme further comprises static seals for sealing the blade ring to the cylinder and flexible joints for attaching the blade ring to the turbine components.

Hultgren, Kent Goran (Winter Park, FL); Owen, Brian Charles (Orlando, FL); Dowman, Steven Wayne (Orlando, FL); Nordlund, Raymond Scott (Orlando, FL); Smith, Ricky Lee (Oviedo, FL)

2000-01-01T23:59:59.000Z

30

Development of scientific and geopolitical criteria to rank geoengineering schemes  

E-Print Network [OSTI]

Development of scientific and geopolitical criteria to rank geoengineering schemes · My background;Proliferation of schemes #12;>15 Years of press coverage on Geo-engineering but no science SO Do we know enough to rank schemes? #12;Ranking geo-engineering schemes Boyd (2008) Nature Geosciences #12;Rationale

Polz, Martin

31

Scheme Evolution and the Relational Algebra Edwin McKenzie*  

E-Print Network [OSTI]

Scheme Evolution and the Relational Algebra TR87-003 Revised May 1988 Edwin McKenzie* Richard Institution. #12;Scheme Evolution and the Relational Algebra Edwin McKenzie and Richard Snodgrass Department, evolution of a database's contents and evolution of a database's scheme. We define a relation's scheme

North Carolina at Chapel Hill, University of

32

A Survey of Unix Init Schemes  

E-Print Network [OSTI]

In most modern operating systems, init (as in "initialization") is the program launched by the kernel at boot time. It runs as a daemon and typically has PID 1. Init is responsible for spawning all other processes and scavenging zombies. It is also responsible for reboot and shutdown operations. This document describes existing solutions that implement the init process and/or init scripts in Unix-like systems. These solutions range from the legacy and still-in-use BSD and SystemV schemes, to recent and promising schemes from Ubuntu, Apple, Sun and independent developers. Our goal is to highlight their focus and compare their sets of features.

Yvan Royon; Stphane Frnot

2007-06-20T23:59:59.000Z

33

Security problem on arbitrated quantum signature schemes  

SciTech Connect (OSTI)

Many arbitrated quantum signature schemes implemented with the help of a trusted third party have been developed up to now. In order to guarantee unconditional security, most of them take advantage of the optimal quantum one-time encryption based on Pauli operators. However, in this paper we point out that the previous schemes provide security only against a total break attack and show in fact that there exists an existential forgery attack that can validly modify the transmitted pair of message and signature. In addition, we also provide a simple method to recover security against the proposed attack.

Choi, Jeong Woon [Emerging Technology R and D Center, SK Telecom, Kyunggi 463-784 (Korea, Republic of); Chang, Ku-Young; Hong, Dowon [Cryptography Research Team, Electronics and Telecommunications Research Institute, Daejeon 305-700 (Korea, Republic of)

2011-12-15T23:59:59.000Z

34

Inoculating Multivariate Schemes Against Differential Attacks  

E-Print Network [OSTI]

adding as few as 10 Plus poly- nomials to the Perturbed Matsumoto-Imai (PMI) cryptosystem when g = 1 scheme the Perturbed Matsumoto-Imai-Plus (PMI+) cryptosystem. Keywords: multivariate, public key, called the perturbed Matsumoto-Imai cryptosystem (PMI), is slower as one needs to go through a search

35

A classification scheme for LWR fuel assemblies  

SciTech Connect (OSTI)

With over 100 light water nuclear reactors operating nationwide, representing designs by four primary vendors, and with reload fuel manufactured by these vendors and additional suppliers, a wide variety of fuel assembly types are in existence. At Oak Ridge National Laboratory, both the Systems Integration Program and the Characteristics Data Base project required a classification scheme for these fuels. This scheme can be applied to other areas and is expected to be of value to many Office of Civilian Radioactive Waste Management programs. To develop the classification scheme, extensive information on the fuel assemblies that have been and are being manufactured by the various nuclear fuel vendors was compiled, reviewed, and evaluated. It was determined that it is possible to characterize assemblies in a systematic manner, using a combination of physical factors. A two-stage scheme was developed consisting of 79 assembly types, which are grouped into 22 assembly classes. The assembly classes are determined by the general design of the reactor cores in which the assemblies are, or were, used. The general BWR and PWR classes are divided differently but both are based on reactor core configuration. 2 refs., 15 tabs.

Moore, R.S.; Williamson, D.A.; Notz, K.J.

1988-11-01T23:59:59.000Z

36

NOTES ON MACDONALD POLYNOMIALS AND THE GEOMETRY OF HILBERT SCHEMES  

E-Print Network [OSTI]

NOTES ON MACDONALD POLYNOMIALS AND THE GEOMETRY OF HILBERT SCHEMES MARK HAIMAN (mhaiman words: Symmetric functions, Macdonald polynomials, Hilbert schemes 2000 Mathematics Subject combinatorial problems we solve are (1) we prove the positivity conjecture for Macdonald polynomials, and (2) we

Haiman, Mark D.

37

antiproton acceleration scheme: Topics by E-print Network  

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

F; Gaz, A; Margoni, M; Morandin, M; Pompili, A; Posocco, M; Rotondo, M 2006-01-01 244 Car Sharing Scheme Car Share Scheme Computer Technologies and Information Sciences...

38

Congestion pricing using a raffle-based scheme  

E-Print Network [OSTI]

We propose a raffle-based scheme for the decongestion of a shared resource. Our scheme builds on ideas from the economic literature on incentivizing contributions to a public good. We formulate a game-theoretic model for ...

Amin, Saurabh

39

Pseudofunctorial behavior of Cousin complexes on formal schemes  

E-Print Network [OSTI]

Contemporary Mathematics. Pseudofunctorial behavior of Cousin complexes on formal schemes. Joseph Lipman, Suresh Nayak, and Pramathanath Sastry.

2007-12-28T23:59:59.000Z

40

REDUCED RANK DETECTION SCHEMES FOR DS-CDMA COMMUNICATION SYSTEMS  

E-Print Network [OSTI]

REDUCED RANK DETECTION SCHEMES FOR DS-CDMA COMMUNICATION SYSTEMS Wanshi Chen Ericsson Wireless 90089­2565 e-mail: ubli@usc.edu Abstract -- Several reduced-rank detection schemes for direct- sequence to the multistage linear receiver scheme based on the Cayley Hamilton theorem. The analysis of the reduced rank

Southern California, University of

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

E#cient Oblivious Transfer Schemes # WenGuey Tzeng  

E-Print Network [OSTI]

of exchanged messages for the case that the re­ ceiver's choice is unconditionally secure. The computation time of them. For our OT 1 n scheme, the privacy of the receiver's choice is unconditionally secure. It achieves better security than Noar and Pinkas's scheme does in many aspects. For example, our scheme

42

Configuration Distribution and Designs of Codes in the Johnson Scheme  

E-Print Network [OSTI]

Configuration Distribution and Designs of Codes in the Johnson Scheme Tuvi Etzion Technion between perfect codes in the Johnson scheme and designs, and provide new tools for proving Delsarte conjecture that there are no nontrivial perfect codes in the Johnson scheme. Three topics will be considered

Etzion, Tuvi

43

Nest Record Card Scheme 1 Welcome to the Nest Record Card Scheme, NERCS for short. The project aims to  

E-Print Network [OSTI]

Nest Record Card Scheme 1 Welcome to the Nest Record Card Scheme, NERCS for short. The project aims to monitor the breeding success of birds and increase our knowledge of their nesting habits. The Avian will be computerized to provide a backward perspective to the data from the new scheme. Why do we need nest records

de Villiers, Marienne

44

Context DDFV Scheme Numerical analysis ECG Simulation 2D/3D DDFV scheme for anisotropic-heterogeneous  

E-Print Network [OSTI]

Context DDFV Scheme Numerical analysis ECG Simulation 2D/3D DDFV scheme for anisotropic Numerical analysis ECG Simulation Authors : Laboratoire de math´ematiques Jean Leray, Universit´e de Nantes Pays de l'Adour : · Charles Pierre #12;Context DDFV Scheme Numerical analysis ECG Simulation Outline

Pierre, Charles

45

A numerical scheme for ionizing shock waves  

SciTech Connect (OSTI)

A two-dimensional (2D) visual computer code to solve the steady state (SS) or transient shock problems including partially ionizing plasma is presented. Since the flows considered are hypersonic and the resulting temperatures are high, the plasma is partially ionized. Hence the plasma constituents are electrons, ions and neutral atoms. It is assumed that all the above species are in thermal equilibrium, namely, that they all have the same temperature. The ionization degree is calculated from Saha equation as a function of electron density and pressure by means of a nonlinear Newton type root finding algorithms. The code utilizes a wave model and numerical fluctuation distribution (FD) scheme that runs on structured or unstructured triangular meshes. This scheme is based on evaluating the mesh averaged fluctuations arising from a number of waves and distributing them to the nodes of these meshes in an upwind manner. The physical properties (directions, strengths, etc.) of these wave patterns are obtained by a new wave model: ION-A developed from the eigen-system of the flux Jacobian matrices. Since the equation of state (EOS) which is used to close up the conservation laws includes electronic effects, it is a nonlinear function and it must be inverted by iterations to determine the ionization degree as a function of density and temperature. For the time advancement, the scheme utilizes a multi-stage Runge-Kutta (RK) algorithm with time steps carefully evaluated from the maximum possible propagation speed in the solution domain. The code runs interactively with the user and allows to create different meshes to use different initial and boundary conditions and to see changes of desired physical quantities in the form of color and vector graphics. The details of the visual properties of the code has been published before (see [N. Aslan, A visual fluctuation splitting scheme for magneto-hydrodynamics with a new sonic fix and Euler limit, J. Comput. Phys. 197 (2004) 1-27]). The two-dimensional nature of ION-A was presented by a planar shock wave propagating over a circular obstacle. It was demonstrated that including the effects of ionization in calculating complex flows is important, even when they appear initially negligible. This code can be used to accurately simulate the nonlinear time dependent evolution of neutral or ionized plasma flows from supersonic to hypersonic regimes.

Aslan, Necdet [Yeditepe University, Physics Department, Kayisda g-circumflex i, 34755 Istanbul (Turkey)]. E-mail: naslan@yeditepe.edu.tr; Mond, Michael [Ben Gurion University, Mechanical Engineering Department, Beer Sheva (Israel)

2005-12-10T23:59:59.000Z

46

Adaptive Resource Management Schemes for Web Services  

E-Print Network [OSTI]

are required. However, as the number of servers in web cluster systems increase, web cluster systems incur long and unpredictable delays to manage servers. This study presents the e?cient management schemes for web cluster systems. First of all, we propose an e... to the backend servers plays an important role in the overall system performance. In this study, we present a proactive request distribution (ProRD) to provide an intelligent distribution at the distributor. Second, we propose the heuristic memory management...

Lee, Heung Ki

2011-02-22T23:59:59.000Z

47

A Review of Green Logistics Schemes Used in Cities Around the World  

E-Print Network [OSTI]

Table 2: Examples of green logistics schemes Geroliminisand Daganzo: "Green Logistics" Schemes around the world E XGerolmns and Daganzo: "Green Logstcs" Schemes around

Geroliminis, Nikolaos; Daganzo, Carlos F.

2005-01-01T23:59:59.000Z

48

Finite-difference schemes for anisotropic diffusion  

SciTech Connect (OSTI)

In fusion plasmas diffusion tensors are extremely anisotropic due to the high temperature and large magnetic field strength. This causes diffusion, heat conduction, and viscous momentum loss, to effectively be aligned with the magnetic field lines. This alignment leads to different values for the respective diffusive coefficients in the magnetic field direction and in the perpendicular direction, to the extent that heat diffusion coefficients can be up to 10{sup 12} times larger in the parallel direction than in the perpendicular direction. This anisotropy puts stringent requirements on the numerical methods used to approximate the MHD-equations since any misalignment of the grid may cause the perpendicular diffusion to be polluted by the numerical error in approximating the parallel diffusion. Currently the common approach is to apply magnetic field-aligned coordinates, an approach that automatically takes care of the directionality of the diffusive coefficients. This approach runs into problems at x-points and at points where there is magnetic re-connection, since this causes local non-alignment. It is therefore useful to consider numerical schemes that are tolerant to the misalignment of the grid with the magnetic field lines, both to improve existing methods and to help open the possibility of applying regular non-aligned grids. To investigate this, in this paper several discretization schemes are developed and applied to the anisotropic heat diffusion equation on a non-aligned grid.

Es, Bram van, E-mail: es@cwi.nl [Centrum Wiskunde and Informatica, P.O. Box 94079, 1090GB Amsterdam (Netherlands); FOM Institute DIFFER, Dutch Institute for Fundamental Energy Research, Association EURATOM-FOM (Netherlands); Koren, Barry [Eindhoven University of Technology (Netherlands); Blank, Hugo J. de [FOM Institute DIFFER, Dutch Institute for Fundamental Energy Research, Association EURATOM-FOM (Netherlands)

2014-09-01T23:59:59.000Z

49

Automated distribution scheme speeds service restoration  

SciTech Connect (OSTI)

This article describes an automated distribution scheme that met Lakeland Electric requirements for an automated scheme that would restore power to a major customer in less than 60 seconds. In January 1993, Lakeland Electric and Water (LEW) took on the design and construction of a new 12.47-kV automated distribution system for the Publix Supermarket Industrial complex. The industrial complex in Lakeland, Florida, totals 2 million square feet and houses a dairy processing plant, bakery, produce plant, deli plant, data processing facility for Publix`s entire retail network, purchasing department, as well as several maintenance facilities. The retail chain is LEW`s largest customer with a peak demand of 15.5 MW and a load factor of 81%. Publix`s rapid expansion plan has placed a great deal of pressure on this facility to perform at peak level with no interruptions of product flow. The task at hand was to provide Publix with a state-of-the-art, automated, distribution system built to withstand the inherent weather-related situations in central Florida, lightning and hurricanes.

Atwell, E. [Lakeland Electric and Water, FL (United States)] [Lakeland Electric and Water, FL (United States); Gamvrelis, T. [Harris Canada, Inc., Calgary, Alberta (Canada). Control Div.] [Harris Canada, Inc., Calgary, Alberta (Canada). Control Div.; Kearns, D. [S and C Electric Co., Chicago, IL (United States)] [S and C Electric Co., Chicago, IL (United States); Landman, R. [H and L Instruments, North Hampton, NH (United States)] [H and L Instruments, North Hampton, NH (United States)

1996-01-01T23:59:59.000Z

50

NOTTINGHAM TRENT UNIVERSITY -INVESTING IN EXCELLENCE VICE-CHANCELLOR'S PHD SCHOLARSHIP SCHEME & SCHOOL PHD SCHOLARSHIP SCHEME  

E-Print Network [OSTI]

NOTTINGHAM TRENT UNIVERSITY - INVESTING IN EXCELLENCE VICE-CHANCELLOR'S PHD SCHOLARSHIP SCHEME Nottingham Law School Supervisor Name Director of Studies: Prof David Ong Co-Supervisors: Mr Gary Wilson Project title Legal Aspects of the Integration of Social and Environmental Protection Considerations

Evans, Paul

51

A simple and accurate discontinuous Galerkin scheme for modeling ...  

E-Print Network [OSTI]

weak coupling between elements makes the mass matrix local to the cell, and thus DG schemes ... The wave energy of the spurious ..... Our correction strategy is.

2014-12-11T23:59:59.000Z

52

aligned coupling scheme: Topics by E-print Network  

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

Formula and a symmetric interior penalty Discontinuous Galerkin method. The kinematic wave equation governing the overland flow is discretized using a Godunov scheme....

53

Novel schemes for the optical manipulation of atoms and molecules.  

E-Print Network [OSTI]

??The range of atoms which can be cooled by lasers is limited to those which have a closed two level structure. Several schemes have been (more)

Bateman, James

2009-01-01T23:59:59.000Z

54

Biofuels Sustainability Certification Schemes: Challenges, Feasibility and Possible Approaches.  

E-Print Network [OSTI]

??The focus of this research is to develop and apply an analytical framework for evaluating the effectiveness and practicability of sustainability certification schemes for biofuels, (more)

Visconti, Gloria and#60;1971and#62

2010-01-01T23:59:59.000Z

55

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

Open Energy Info (EERE)

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

56

adaptive control scheme: Topics by E-print Network  

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

systems concepts. Based Alpcan, Tansu 5 Adaptive predictive lighting controllers for daylight artificial light integrated schemes. Open Access Theses and Dissertations Summary:...

57

Energy stable schemes and numerical simulations of two phase ...  

E-Print Network [OSTI]

Title: Energy stable schemes and numerical simulations of two phase complex fluids by the phase-field method Abstact: We present an energetic variational...

58

second-order convex splitting schemes for gradient flows with ...  

E-Print Network [OSTI]

Abstract. We construct unconditionally stable, unconditionally uniquely solvable, and second-order accurate (in time) schemes for gradient flows with energy of...

2011-11-08T23:59:59.000Z

59

Positivity-preserving high order finite difference WENO schemes for ...  

E-Print Network [OSTI]

In a conservative numerical scheme, the internal energy is obtained by subtracting the kinetic energy from the total energy, thus the resulting pressure may be...

60

Efficient energy stable schemes with spectral discretization in space ...  

E-Print Network [OSTI]

We construct energy stable schemes for the time discretization of the highly nonlinear ... shape) in order to achieve a well-defined energy for the system.

2012-04-03T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

DECOUPLED ENERGY STABLE SCHEMES FOR A PHASE-FIELD ...  

E-Print Network [OSTI]

cally consistent phase-field model that admits an energy law. ... numerical schemes which do not respect the energy dissipation laws may be overloaded with...

2014-04-24T23:59:59.000Z

62

Energy Supplier Obligations and White Certificate Schemes: Comparative...  

Open Energy Info (EERE)

Supplier Obligations and White Certificate Schemes: Comparative Analysis of Results in the European Union Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Energy Supplier...

63

adaptive modelling scheme: Topics by E-print Network  

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

the implementation of the present scheme requires only information about the local enviroment and this allows to treat also system with very complicated boundary conditions....

64

Emissions trading scheme for South Africa : opportunities and challenges.  

E-Print Network [OSTI]

??ENGLISH ABSTRACT: This research report aims to determine whether an emissions trading scheme or carbon tax is the most suitable market-based emissions reduction mechanism for (more)

Jooste, Dustin

2012-01-01T23:59:59.000Z

65

Coordinated Renewable Energy Support Schemes Stine Grenaa Jensen1  

E-Print Network [OSTI]

Coordinated Renewable Energy Support Schemes Stine Grenaa Jensen1 , and Poul Erik Morthorst2 Risø for renewable energy are regionalised. Two theoretical examples are used to explain interactive effects on, e-ordination of support schemes for renewable energy technologies plays a prominent role at the European agenda (EC, 2005

66

Hierarchical Control Scheme for Voltage Unbalance Compensation in Islanded Microgrids  

E-Print Network [OSTI]

Hierarchical Control Scheme for Voltage Unbalance Compensation in Islanded Microgrids Mehdi@et.aau.dk Abstract-- The concept of microgrid hierarchical control is presented, recently. In this paper, a hierarchical scheme which includes primary and secondary control levels is proposed for islanded microgrids

Vasquez, Juan Carlos

67

Stable Difference Schemes for the Neutron Transport Equation  

SciTech Connect (OSTI)

The initial boundary value problem for the neutron transport equation is considered. The first and second orders of accuracy difference schemes for the approximate solution of this problem are presented. In applications, the stability estimates for solutions of difference schemes for the approximate solution of the neutron transport equation are obtained. Numerical techniques are developed and algorithms are tested on an example in MATLAB.

Ashyralyev, Allaberen [Department of Mathematics Fatih University, 34500, Istanbul (Turkey); Department of Mathematics, ITTU, Ashgabat (Turkmenistan); Taskin, Abdulgafur [Department of Mathematics Fatih University, 34500, Istanbul (Turkey)

2011-09-22T23:59:59.000Z

68

Computations of Hypersonic Weakly Ionised Flows using a Relaxation Scheme  

E-Print Network [OSTI]

Computations of Hypersonic Weakly Ionised Flows using a Relaxation Scheme Olivier Rouzaud ONERA to classical Riemann solvers. Thus, we propose a re- laxation scheme adapted to the treatment of hypersonic of large Mach num- ber flows corresponding to hypersonic flows around reentry bodies. At high speeds

Chalons, Christophe

69

A Sensorless Direct Torque Control Scheme Suitable for Electric Vehicles  

E-Print Network [OSTI]

A Sensorless Direct Torque Control Scheme Suitable for Electric Vehicles Farid Khoucha, Khoudir an Electric Vehicle (EV). The proposed scheme uses an adaptive flux and speed observer that is based on a full is a good candidate for EVs propulsion. Index Terms--Electric vehicle, Induction motor, sensorless drive

Paris-Sud XI, Universit de

70

Mathematical study of a petroleum-engineering scheme Robert EYMARD  

E-Print Network [OSTI]

MICHEL October 8, 2002 Abstract Models of two phase flows in porous media, used in petroleum engineeringMathematical study of a petroleum-engineering scheme Robert EYMARD , Rapha`ele HERBIN , and Anthony, consisting in a finite volume method together with a phase-by-phase upstream weighting scheme, is used

Herbin, Raphaèle

71

Implementaion and performance of checkpointing schemes in a distributed environment  

E-Print Network [OSTI]

as the representative for the coordinated schemes and [21 and [3] are chosen for the independent checkpointing. A distributed application is simulated on a subnet of nine SUN Sparc Stations and performance of checkpointing schemes is measured by varying the number...

Soni, Sameer

1994-01-01T23:59:59.000Z

72

OS-HELP Loan Scheme Guidelines for Students  

E-Print Network [OSTI]

OS-HELP Loan Scheme Guidelines for Students OS-HELP Loan Scheme is a Commonwealth Department to eligible students to undertake some of their undergraduate study overseas. OS-HELP loan is intended. 1. Eligibility Criteria To be eligible to apply for an OS-HELP loan you must: · be an Australian

73

Cryptanalysis of a recent two factor authentication scheme  

E-Print Network [OSTI]

Centre Dublin City University Ballymun, Dublin 9, Ireland. mike.scott@certivox.com Abstract. Very recently a scheme has been proposed by Wang and Ma for a robust smart-card based password authentication scheme, which claims to be secure against a Smart Card security breach. In this short note we attempt

74

National Forest Land Scheme case study Broadford and Strath Community  

E-Print Network [OSTI]

National Forest Land Scheme case study Broadford and Strath Community Company: Broadford Wood.forestry.gov.uk/nfls1National Forest Land Scheme case study #12;BSCC has almost 200 members: voting membership is open covers the IV42 and IV49 post codes: about 240km2 . Much of the area comprises moorland and hills

75

UNCORRECTEDPROOF The use of scintillometry for validating aggregation schemes over  

E-Print Network [OSTI]

evapotranspiration is based on the use of aggregation schemes in conjunction with energy-balance or land of the energy balance providing the estimates of the available energy (AE(=Rn G), where Rn and G are the net the Marrakech city (Morocco), have been used to test the aggregation schemes. The Agdal oliveyard was made up

Paris-Sud XI, Universit de

76

A pressure control scheme for air brakes in commercial vehicles  

E-Print Network [OSTI]

This research is focused on developing a control scheme for regulating the pressure in the brake chamber of an air brake system found in most commercial vehicles like trucks, tractor-trailers and buses. Such a control scheme can be used...

Bowlin, Christopher Leland

2007-04-25T23:59:59.000Z

77

Journey data based arrival forecasting for bicycle hire schemes  

E-Print Network [OSTI]

Journey data based arrival forecasting for bicycle hire schemes Marcel C. Guenther and Jeremy T. The global emergence of city bicycle hire schemes has re- cently received a lot of attention of future bicycle migration trends, as these assist service providers to ensure availability of bicycles

Imperial College, London

78

Key words. Emissions markets, Cap-and-trade schemes, Equilibrium models, Environmental MARKET DESIGN FOR EMISSION TRADING SCHEMES  

E-Print Network [OSTI]

Key words. Emissions markets, Cap-and-trade schemes, Equilibrium models, Environmental Finance. MARKET DESIGN FOR EMISSION TRADING SCHEMES REN´E CARMONA , MAX FEHR , JURI HINZ , AND ARNAUD PORCHET to help policy makers and regulators understand the pros and the cons of the emissions markets. We propose

Carmona, Rene

79

THE QUEEN'S COLLEGE RECYCLING SCHEME Under the new recycling scheme commencing at the beginning of Hilary Term the following  

E-Print Network [OSTI]

THE QUEEN'S COLLEGE RECYCLING SCHEME Under the new recycling scheme commencing at the beginning in all student rooms and offices o one for normal waste o one for co-mingled recycling1 Bins these bins. If any recycling is contaminated it will be `waste' not recycling and it would need to go

Capdeboscq, Yves

80

Total Break of the -IC Signature Scheme Pierre-Alain Fouque1  

E-Print Network [OSTI]

- analysis of multivariate schemes and have lead to the efficient break of SFLASH in practice. In this work- signature scheme recently proposed at PKC 2007. This cryptosystem is a multivariate scheme based on a new internal quadratic primitive which avoids some drawbacks of previous multivari- ate schemes: the scheme

Fouque, Pierre-Alain

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

STABLE FILTERING SCHEMES WITH RATIONAL DILATIONS BRODY DYLAN JOHNSON  

E-Print Network [OSTI]

STABLE FILTERING SCHEMES WITH RATIONAL DILATIONS BRODY DYLAN JOHNSON Abstract. The relationship Services Administration at St. Louis University. 1 #12;2 BRODY DYLAN JOHNSON If is a scaling function

Johnson, Brody Dylan

82

Progress with multigrid schemes for hypersonic flow problems  

SciTech Connect (OSTI)

Several multigrid schemes are considered for the numerical computation of viscous hypersonic flows. For each scheme, the basic solution algorithm employs upwind spatial discretization with explicit multistage time stepping. Two-level versions of the various multigrid algorithms are applied to the two-dimensional advection equation, and Fourier analysis is used to determine their damping properties. The capabilities of the multigrid methods are assessed by solving three different hypersonic flow problems. Some new multigrid schemes based on semicoarsening strategies are shown to be quite effective in relieving the stiffness caused by the high-aspect-ratio cells required to resolve high Reynolds number flows. These schemes exhibit good convergence rates for Reynolds numbers up to 200 X 10{sup 6} and Mach numbers up to 25. 32 refs., 31 figs., 1 tab.

Radespiel, R. [DLR, Braunschweig (Germany)] [DLR, Braunschweig (Germany); Swanson, R.C. [NASA Langley Research Center, Hampton, VA (United States)] [NASA Langley Research Center, Hampton, VA (United States)

1995-01-01T23:59:59.000Z

83

Distributed Space-Time Cooperative Schemes for Underwater Acoustic Communications  

E-Print Network [OSTI]

Distributed Space-Time Cooperative Schemes for Underwater Acoustic Communications Madhavan, which is a main characteristic of underwater acoustic channels. A time-reversal distributed space in oceanic research, such as [3] [4]: data collec- tion, pollution monitoring, tactical surveillance

Stojanovic, Milica

84

Coordinating production quantities and demand forecasts through penalty schemes  

E-Print Network [OSTI]

Coordinating production quantities and demand forecasts through penalty schemes MURUVVET CELIKBAS1 departments which enable organizations to match demand forecasts with production quantities. This research problem where demand is uncertain and the marketing de- partment provides a forecast to manufacturing

Swaminathan, Jayashankar M.

85

Recovery of primal solution in dual subgradient schemes  

E-Print Network [OSTI]

In this thesis, we study primal solutions for general optimization problems. In particular, we employ the subgradient method to solve the Lagrangian dual of a convex constrained problem, and use a primal-averaging scheme ...

Ma, Jing, S.M. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

86

UTRECHT NETWORK RESEARCH GRANT (Mobility Scheme) Template Final Report  

E-Print Network [OSTI]

UTRECHT NETWORK RESEARCH GRANT (Mobility Scheme) Template Final Report Students, who received an Utrecht Network Research Grant are required to hand in a report to their Utrecht Network contact person

Schüler, Axel

87

Towards an Emissions Trading Scheme for Air Pollutants in India  

E-Print Network [OSTI]

Emissions trading schemes have great potential to lower pollution while minimizing compliance costs for firms in many areas now subject to traditional command-and-control regulation. This paper connects experience with ...

Duflo, Esther

88

Auxiliary power controls on the Nelson River HVDC scheme  

SciTech Connect (OSTI)

This paper describes the auxiliary power controls on the Nelson River HVDC scheme. It shows how the fast control feature of the HVDC link can be utilized to enhance the operation of an integrated ac/dc power system.

Chand, J. (Manitoba Hydro, Winnipeg, Manitoba (CA))

1992-02-01T23:59:59.000Z

89

act coding scheme: Topics by E-print Network  

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

18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 New decoding scheme for LDPC codes based on simple product code structure CERN Preprints Summary: In this paper, a new...

90

Village adoption scheme : a model for rural development  

E-Print Network [OSTI]

The study describes a "Village Adoption Scheme" as a model for energising the rural economy in India and to slow down rural - urban migration which research has shown to be harmful to both; rural and urban people of India ...

Nanavati, Shahid Sadruddin, 1961-

2004-01-01T23:59:59.000Z

91

EM algorithm estimation of TCM scheme over multipath fading  

E-Print Network [OSTI]

The performance of Trellis Coded Modulation scheme via Expectation-Maximization algorithm utilizing a Kalman filter over multipath fading is presented. EM algorithm offers an easier computation than the classical ML estimation does. To get a better...

Gunawan, Wiedy

1997-01-01T23:59:59.000Z

92

A development of MOS linear active load schemes  

E-Print Network [OSTI]

A DEVELOPMENT OF MOS LINEAR ACTIVE LOAD SCHEMES A Thesis by ROBERT ALAN MALLETT Submitted to the Graduate College of Texas AgrM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1985 Major...-Angulo ( ember) Thomas R. Fischer (Member) Charl lover (Member) J. W. Howze (Head of Department) December 1985 ABSTRACT The Development of MOS Linear Active Load Schemes. (December 1985) Robert Alan Mallett, B, S, , South Dakota State University...

Mallett, Robert Alan

1985-01-01T23:59:59.000Z

93

Designing data collection schemes for process capability analysis  

E-Print Network [OSTI]

DESIGNING DATA COLLECTION SCHEMES FOR PROCESS CAPABILITY ANALYSIS A Thesis by NITIN RAMESH MANTRI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1994 Major Subject: Industrial Engineering DESIGNING DATA COLLECTION SCHEMES FOR PROCESS CAPABILITY ANALYSIS A Thesis by NITIN RAMESH MANTRI Submitted to Texas A&M University in partial fulfillment of the requirements for the degree...

Mantri, Nitin Ramesh

1994-01-01T23:59:59.000Z

94

Decoupled energy stable schemes for phase-field models of two ...  

E-Print Network [OSTI]

decoupled, unconditionally energy stable schemes for Cahn-Hilliard phase-field models of two-phase incompressible flows. At each time step, these schemes...

2014-11-11T23:59:59.000Z

95

The Influence of a CO2 Pricing Scheme on Distributed Energy Resources in California's Commercial Buildings  

E-Print Network [OSTI]

The Influence of a CO2 Pricing Scheme on Distributed Energy5. Regional Results for the CO2 Pricing Scheme no-invest

Stadler, Michael

2010-01-01T23:59:59.000Z

96

Decoupled energy stable schemes for phase-field models of two ...  

E-Print Network [OSTI]

Jan 7, 2015 ... Efficient energy stable numerical schemes for a phase field ... conditions and a linear decoupled energy stable scheme for systems with static...

Jie Shen

2015-01-21T23:59:59.000Z

97

CX-000104: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Pedro Bay Native Village Technical Consulting Services for Mini Hydropower Feasibility StudyCX(s) Applied: A9, A11Date: 12/04/2009Location(s): AlaskaOffice(s): Energy Efficiency and Renewable Energy

98

Hybrid Automatic Repeat Request Scheme With Turbo Codes  

E-Print Network [OSTI]

A novel hybrid automatic repeat request system based on turbo codes, called turbo HARQ system, is proposed. The iterative turbo decoding procedure is exploited to request retransmission of not decodable blocks without the necessity of an outer error--detecting code. It is shown that the turbo HARQ scheme with code rate R c = 1=2 and interleaver length 1024 significantly outperforms the classical turbo coding scheme --- especially for low SNR --- without essential loss in throughput. 1 INTRODUCTION Automatic repeat request (ARQ) protocols are well--known methods to achieve high reliability in digital transmission schemes. The information is protected by an error--detecting block code. If the decoder detects an erroneous transmitted block, retransmission of this block is requested via a feedback channel which is assumed to be error--free throughout this paper. Additionally, the request is assumed to be repeated until the decoder detects error--free transmission. The great advantage of s...

Jozef Hamorsky; Udo Wachsmann; Johannes B. Huber; Anton Cizmar

99

Quantum teleportation scheme by selecting one of multiple output ports  

E-Print Network [OSTI]

The scheme of quantum teleportation, where Bob has multiple (N) output ports and obtains the teleported state by simply selecting one of the N ports, is thoroughly studied. We consider both deterministic version and probabilistic version of the teleportation scheme aiming to teleport an unknown state of a qubit. Moreover, we consider two cases for each version: (i) the state employed for the teleportation is fixed to a maximally entangled state, and (ii) the state is also optimized as well as Alice's measurement. We analytically determine the optimal protocols for all the four cases, and show the corresponding optimal fidelity or optimal success probability. All these protocols can achieve the perfect teleportation in the asymptotic limit of $N\\to\\infty$. The entanglement properties of the teleportation scheme are also discussed.

Satoshi Ishizaka; Tohya Hiroshima

2009-04-06T23:59:59.000Z

100

An efficient certificateless two-party authenticated key agreement scheme from  

E-Print Network [OSTI]

-based cryptography. Key agreement(KA) schemes are designed to provide secure communications between two or more proposed. However, these schemes need to compute at least one pairing on-line. In order to improve to finished the key agreement. Our scheme's overhead is lower than that of previous schemes [3

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

A bottom-up analysis of including aviation within theEU's Emissions Trading Scheme  

E-Print Network [OSTI]

A bottom-up analysis of including aviation within theEU's Emissions Trading Scheme Alice Bows-up analysis of including aviation within the EU's Emissions Trading Scheme Alice Bows & Kevin Anderson Tyndall's emissions trading scheme. Results indicate that unless the scheme adopts both an early baseline year

Watson, Andrew

102

A Data Partitioning Scheme for Spatial Regression Slobodan Vucetic1  

E-Print Network [OSTI]

A Data Partitioning Scheme for Spatial Regression Slobodan Vucetic1 , Tim Fiez2 and Zoran Obradovic dealing with agricultural problems characterized with strong spatial data correlation. A sim- ple spatial better generalization is proposed. Also, integration of predictors formed from spatially partitioned data

Vucetic, Slobodan

103

Project Research and Development (PRD) scheme Guidance for Academic Applicants  

E-Print Network [OSTI]

1 Project Research and Development (PRD) scheme ­ Guidance for Academic Applicants Contents science and technology leadership in future Science and Technology Facility Council projects and gives and development projects which enable STFC to deliver the science programme objectives in the areas of particle

104

Project Research and Development (PRD) scheme Guidance for Applicants  

E-Print Network [OSTI]

1 Project Research and Development (PRD) scheme ­ Guidance for Applicants Contents Contents science and technology leadership in future Science and Technology Facility Council projects and gives and development projects which enable STFC to deliver the science programme objectives in the areas of particle

105

From robotic arms to mobile manipulation: on coordinated motion schemes  

E-Print Network [OSTI]

From robotic arms to mobile manipulation: on coordinated motion schemes V. Padois , J.-Y. Fourquet. It is compared with the classical kinematic modelling of robotic arms. In particular, it is shown that many tools of organization are due to the inherently bounded workspace of classic robotic arms or auto- matic machines

Paris-Sud XI, Université de

106

Approximation schemes for covering and scheduling on related machines  

E-Print Network [OSTI]

Approximation schemes for covering and scheduling on related machines Yossi Azar1 ,Leah Epstein2 1 Abstract. We consider the problem of assigning a set of jobs to m par- allel related machines so as to maximize the minimum load over the machines. This situation corresponds to a case that a system which con

Azar, Yossi

107

Approximation schemes for covering and scheduling on related machines  

E-Print Network [OSTI]

Approximation schemes for covering and scheduling on related machines Yossi Azar 1 ,Leah Epstein 2­Aviv University. y Abstract. We consider the problem of assigning a set of jobs to m par­ allel related machines so as to maximize the minimum load over the machines. This situation corresponds to a case

Epstein, Leah

108

Dissecting Oxygenic Photosynthesis: The Evolution of the "Z"-Scheme  

E-Print Network [OSTI]

of the "period four oxygen clock" and the structure of the oxygen-evolving center. After a brief mention the maximum quantum yield, i.e., the number of oxygen molecules evolved per photon of light absorbed11CHAPTER Dissecting Oxygenic Photosynthesis: The Evolution of the "Z"-Scheme for Thylakoid

Govindjee

109

Gas Evolution Dynamics and Numerical Dissipation in Shock Capturing Schemes  

E-Print Network [OSTI]

& Technology, Clear Water Bay, Kowloon, Hong Kong. Email:makxu@uxmail.ust.hk Fax:(852)2358­1643 Tel: (852 started from the constructed data. The reconstruction stage is a kinematic description of the flow. The first group is the FVS schemes [11, 14], where the waves generated in the left and right hand side

110

Energy Efficiency of Encryption Schemes Applied to Wireless Sensor Networks  

E-Print Network [OSTI]

Energy Efficiency of Encryption Schemes Applied to Wireless Sensor Networks Xueying Zhang, Howard M (ICC 2010), Cape Town, South Africa, May 2010, and "Energy Efficiency of Symmetric Key Cryptographic In this paper, we focus on the energy efficiency of secure communication in wireless sensor networks (WSNs). Our

Heys, Howard

111

Uniformly Accurate Diffusive Relaxation Schemes for Multiscale Transport Equations  

E-Print Network [OSTI]

, radiative transfer, and transport equations for waves in random media, have a diffusive scaling that leads #12; 1. Introduction Many transport equations, such as the neutron transport [CZ], radiative transferUniformly Accurate Diffusive Relaxation Schemes for Multiscale Transport Equations Shi JIN y

112

Energy-Efficient Routing Schemes for Wireless Sensor Networks  

E-Print Network [OSTI]

1 Energy-Efficient Routing Schemes for Wireless Sensor Networks Maleq Khan Gopal Pandurangan Bharat spanning tree (MST) is the optimal data aggregation tree for energy-efficient rout- ing. We then study energy-efficient distributed algorithms for constructing MSTs. The GHS algorithm to construct MST has

Khan, Maleq

113

Cryptanalysis of Two Dynamic IDbased Remote User Authentication Schemes for  

E-Print Network [OSTI]

University, Harbin City 150001, China 2 Automobile Management Institute of PLA, Bengbu City 233011, China guessing attack under their nontamper resistance assumption of the smart card; (2) It fails to provide of schemes. Keywords: Cryptanalysis, Authentication protocol, O#ine password guessing attack, Smart card

114

National Forest Land Scheme case study Kilfinan Community Forest Company  

E-Print Network [OSTI]

;The hill grazing land that became Acharossan Forest was acquired by the Forestry Commission in 1963National Forest Land Scheme case study Kilfinan Community Forest Company: Acharossan Forest The applicant Kilfinan Community Forest Company (KCFC) is a charitable company limited by guarantee established

115

On Constructing Homomorphic Encryption Schemes from Coding Theory  

E-Print Network [OSTI]

on Reed-Muller codes where for µ = 2 and µ = 3 and security levels between 80 and 128 bits, all operations Homomorphic encryption schemes are very useful cryptographic tools that en- able secure computation (PIR) [35], oblivious polynomial evalu- ation (OPE) [39], or multiparty computation [18]. The work

Paris-Sud XI, Université de

116

On Constructing Homomorphic Encryption Schemes from Coding Theory  

E-Print Network [OSTI]

= 2 and µ = 3 and security levels between 80 and 128 bits, all operations take less than a second encryption schemes are very useful cryptographic tools that enable secure computation. Informally applications, such as electronic voting [14, 5, 18, 19], private information retrieval (PIR) [33], oblivi- ous

117

Sparse grid collocation schemes for stochastic natural convection problems  

E-Print Network [OSTI]

stochastic methods and Monte-Carlo based sam- pling methods are two approaches that have been used to analyzeSparse grid collocation schemes for stochastic natural convection problems Baskar on the Smolyak algorithm offers a viable alternate method for solving high-dimensional stochastic partial

Zabaras, Nicholas J.

118

AN ELECTRONIC EQUIVALENT SCHEME OF A JOSEPHSON JUNCTION  

E-Print Network [OSTI]

AN ELECTRONIC EQUIVALENT SCHEME OF A JOSEPHSON JUNCTION C. K. BAK Physics Laboratory I. A lot of phenomena observed in Josephson junctions are easily identified in the « equi- valent circuit ~. The lock range Ji corresponds to the supercurrent in a Josephson junction. The loop gain A(co) can

Paris-Sud XI, Université de

119

Coupling schemes for modeling hydraulic fracture propagation using the XFEM  

E-Print Network [OSTI]

Coupling schemes for modeling hydraulic fracture propagation using the XFEM Elizaveta Gordeliy of hydraulic fractures in an elastic medium. With appropriate enrichment, the XFEM resolves the Neumann(h) accuracy. For hydraulic fracture problems with a lag separating the uid front from the fracture front, we

Peirce, Anthony

120

Dynamic System Performance of SISO, MISO and MIMO Alamouti Schemes  

E-Print Network [OSTI]

Dynamic System Performance of SISO, MISO and MIMO Alamouti Schemes Dorra Ben Cheikh Battikh , Jean, coupecho, godlewski}@enst.fr Abstract--In this paper, the performance of a SISO system, a 2 1 MISO multiplexing tradeoff for a 2 1 MISO system. Many other techniques have been proposed to exploit antennas

Paris-Sud XI, Universit de

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

AN LMIBASED CONSTRAINED MPC SCHEME WITH TIMEVARYING TERMINAL  

E-Print Network [OSTI]

guarantees stability by use of a time­varying terminal cost and terminal constraint. The online calculation cost. Finally, the technique is illustrated on a copolymerization reactor. Keywords: modelbased, which results in an LMI­based MPC scheme that calculates in each time step both the optimal inputs

122

An Improved Vertex Caching Scheme for 3D Mesh Rendering  

E-Print Network [OSTI]

An Improved Vertex Caching Scheme for 3D Mesh Rendering Gang Lin and Thomas P.-Y. Yu Abstract to the graphics pipeline during rendering. To make effective use of the cache and facilitate rendering, it is key effective algorithm for generating a sequence for efficient rendering of 3D polygonal meshes based on greedy

Lin, Gang

123

Offline Dictionary Attack on Password Authentication Schemes using Smart Cards  

E-Print Network [OSTI]

decades of intensive research in the security community, and the current crux lies in how to achieve truly scenario and gives rise to the strongest adversary model so far (Note that Wang's PSCAV scheme is secure poorly-chosen passwords from the notorious offline dictionary attacks and thus confirms the feasibility

124

Minimal Schemes for Large Neutrino Mixings with Inverted Hierarchy  

E-Print Network [OSTI]

Existing oscillation data point to nonzero neutrino masses with large mixings. We analyze the generic features of the neutrino Majorana mass matrix with inverted hierarchy and construct realistic {\\it minimal schemes} for the neutrino mass matrix that can explain the large (but not maximal) \

Duane A. Dicus; Hong-Jian He; John N. Ng

2002-05-17T23:59:59.000Z

125

Staggered Schemes for Fluctuating Hydrodynamics Florencio Balboa,1  

E-Print Network [OSTI]

stochastic forcing terms, as first proposed by Landau and Lifshitz [16]. Numerically solving the continuum. [18] developed a simple scheme for the stochastic heat equation and the linearized one in modeling the breakup of nanojets. Sharma and Patankar [20] developed a fluid-structure coupling between

126

Second-order Schemes for Steady Weakly Compressible Liquid Flows  

E-Print Network [OSTI]

]. Under such circumstances, the speed of sound is much larger than the velocity of the liquid, resulting-differences, such flows may display compressibility effects. Mach number, the ratio of fluid velocity to speed of sound1 Second-order Schemes for Steady Weakly Compressible Liquid Flows I. J. Keshtiban , F. Belblidia

Grant, P. W.

127

FINITE VOLUME SCHEMES FOR DISPERSIVE WAVE PROPAGATION AND RUNUP  

E-Print Network [OSTI]

FINITE VOLUME SCHEMES FOR DISPERSIVE WAVE PROPAGATION AND RUNUP DENYS DUTYKH , THEODOROS KATSAOUNIS to bidirectional nonlinear, dispersive wave propagation in one space dimension. Special emphasis is given require the computation of the wave generation [DD07, KDD07], propagation [TG97], interaction with solid

Boyer, Edmond

128

A new blowdown compensation scheme for boiler leak detection  

E-Print Network [OSTI]

considers the blowdown effect in industrial boiler operation. This adds to the efficiency of recent advancesA new blowdown compensation scheme for boiler leak detection A. M. Pertew ,1 X. Sun ,1 R. Kent in identification-based leak detection techniques of boiler steam- water systems. Keywords: Industrial Boilers, Tube

Marquez, Horacio J.

129

ICST Transactions Preprint Cooperation Scheme For Distributed Spectrum  

E-Print Network [OSTI]

ICST Transactions Preprint Cooperation Scheme For Distributed Spectrum Sensing In Cognitive Radio, Philadelphia, PA 19122 Abstract Spectrum sensing is an essential phase in cognitive radio networks (CRNs). It enables secondary users (SUs) to access licensed spectrum, which is temporarily not occupied

Wu, Jie

130

Ris-R-Report Support Schemes and Ownership Structures  

E-Print Network [OSTI]

to its potential contribution to energy savings, efficiency gains, customer proximity comments on this report. The FC4Home Project (FC4Home ­ SocioEconomic and Energy Systems AnalysisRisø-R-Report Support Schemes and Ownership Structures The Policy Context for Fuel Cell Based Micro

131

Efficient Algorithms for Implementing Elliptic Curve PublicKey Schemes  

E-Print Network [OSTI]

Efficient Algorithms for Implementing Elliptic Curve Public­Key Schemes by Dan Beauregard A Thesis Cyganski Thesis Advisor Thesis Committee Dr. Stanley Selkow Dr. John Orr Thesis Committee Department Head #12; Preface This thesis describes the research which I conducted while completing my graduate work

132

A Robust Solution Searching Scheme in Genetic Shigeyoshi Tsutsui1  

E-Print Network [OSTI]

of aerospace control system, nuclear power control system, where a kind of robustness against the perturbation of the environmental features are important. In nature, the phenotypic feature of an organism is determined from develop a genetic search scheme which can produce robust solutions. The proposed approach uses the effect

Tsutsui, Shigeyoshi

133

Cryptanalysis and Improvement of an Efficient CCA Secure PKE Scheme  

E-Print Network [OSTI]

that it is more efficient in the public/private keys than the famous CS98 and BMW05 CCA secure public key-time signature based on the BMW05 paradigm [2]. The third way owns to the concept of lossy trapdoor function than the famous CS98 and BMW05 CCA secure public key encryption scheme. However we will show

134

RELIABILITY OF SAMPLING INSPECTION SCHEMES APPLIED TO REPLACEMENT STEAM GENERATORS  

E-Print Network [OSTI]

RELIABILITY OF SAMPLING INSPECTION SCHEMES APPLIED TO REPLACEMENT STEAM GENERATORS Guy Roussel the size of the random sample of tubes to be inspected in replacement steam generators is revisited in this paper. A procedure to estimate the maximum number of defective tubes left in the steam generator after

Cizelj, Leon

135

THE BASELINE POSITRON PRODUCTION AND CAPTURE SCHEME FOR CLIC  

E-Print Network [OSTI]

THE BASELINE POSITRON PRODUCTION AND CAPTURE SCHEME FOR CLIC O. Dadoun , I. Chaikovska, P. Lepercq chan- neling as the baseline for unpolarised positron production. The hybrid source uses a few GeV electron beam imping- ing on a tungsten crystal target. With the crystal oriented on its axis

Paris-Sud XI, Universit de

136

Novel coupling scheme to control dynamics of coupled discrete systems  

E-Print Network [OSTI]

We present a new coupling scheme to control spatio-temporal patterns and chimeras on 1-d and 2-d lattices and random networks of discrete dynamical systems. The scheme involves coupling with an external lattice or network of damped systems. When the system network and external network are set in a feedback loop, the system network can be controlled to a homogeneous steady state or synchronized periodic state with suppression of the chaotic dynamics of the individual units. The control scheme has the advantage that its design does not require any prior information about the system dynamics or its parameters and works effectively for a range of parameters of the control network. We analyze the stability of the controlled steady state or amplitude death state of lattices using the theory of circulant matrices and Routh-Hurwitz's criterion for discrete systems and this helps to isolate regions of effective control in the relevant parameter planes. The conditions thus obtained are found to agree well with those obtained from direct numerical simulations in the specific context of lattices with logistic map and Henon map as on-site system dynamics. We show how chimera states developed in an experimentally realizable 2-d lattice can be controlled using this scheme. We propose this mechanism can provide a phenomenological model for the control of spatio-temporal patterns in coupled neurons due to non-synaptic coupling with the extra cellular medium. We extend the control scheme to regulate dynamics on random networks and adapt the master stability function method to analyze the stability of the controlled state for various topologies and coupling strengths.

Snehal M. Shekatkar; G. Ambika

2014-11-05T23:59:59.000Z

137

Quantum fully homomorphic encryption scheme based on quantum fault-tolerant construction  

E-Print Network [OSTI]

Fully homomorphic encryption is a kind of encryption scheme, which enables arbitrary computation on encrypted data without accessing the data. We present the quantum version of fully homomorphic encryption scheme, which is constructed based on quantum fault-tolerant construction. Two schemes are constructed. The first is a symmetric scheme, and the secret key is the quantum CSS code. In the scheme, when Server performs quantum computation on the encrypted plaintext, some ancillary quantum states should be provided by Client. The second is an asymmetric scheme, which contains the periodical interaction between Client and Server.

Min Liang; Li Yang

2015-03-13T23:59:59.000Z

138

Vorticity Preserving Flux Corrected Transport Scheme for the Acoustic Equations  

SciTech Connect (OSTI)

Long term research goals are to develop an improved cell-centered Lagrangian Hydro algorithm with the following qualities: 1. Utilizes Flux Corrected Transport (FCT) to achieve second order accuracy with multidimensional physics; 2. Does not rely on the one-dimensional Riemann problem; and 3. Implements a form of vorticity control. Short term research goals are to devise and implement a 2D vorticity preserving FCT solver for the acoustic equations on an Eulerian mesh: 1. Develop a flux limiting mechanism for systems of governing equations with symmetric wave speeds; 2. Verify the vorticity preserving properties of the scheme; and 3. Compare the performance of the scheme to traditional MUSCL-Hancock and other algorithms.

Lung, Tyler B. [Los Alamos National Laboratory; Roe, Phil [University of Michigan; Morgan, Nathaniel R. [Los Alamos National Laboratory

2012-08-15T23:59:59.000Z

139

Segment Directory Enhancing the Limited Directory Cache Coherence Schemes  

E-Print Network [OSTI]

We present a new arrangement of directory bits called the segment directory to improve directory storage efficiency: a segment directory can point to several sharing processors with almost the same number of bits as the pointer which can point to only one. Many directory overflows can be eliminated by using the segment directory element in place of the pointer in the limited directory schemes. Also, the segment directory can be implemented without introducing additional hardware overhead and protocol complexity. The detailed execution-driven simulations show that the segment directory always does better than the pointer and eliminates many directory overflows by up to 85%. The resulting improvement in bandwidth and execution time is analyzed in detail for limited directory schemes having different behaviors, with respect to the reduced directory overflows. 1.

Jong Hyuk Choi; Kyu Ho Park

1999-01-01T23:59:59.000Z

140

COMPARING THE EFFECT OF RADIATIVE TRANSFER SCHEMES ON CONVECTION SIMULATIONS  

SciTech Connect (OSTI)

We examine the effect of different radiative transfer schemes on the properties of three-dimensional (3D) simulations of near-surface stellar convection in the superadiabatic layer, where energy transport transitions from fully convective to fully radiative. We employ two radiative transfer schemes that fundamentally differ in the way they cover the 3D domain. The first solver approximates domain coverage with moments, while the second solver samples the 3D domain with ray integrations. By comparing simulations that differ only in their respective radiative transfer methods, we are able to isolate the effect that radiative efficiency has on the structure of the superadiabatic layer. We find the simulations to be in good general agreement, but they show distinct differences in the thermal structure in the superadiabatic layer and atmosphere.

Tanner, Joel D.; Basu, Sarbani; Demarque, Pierre [Astronomy Department, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States)

2012-11-10T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

A Simple Sequential Spectrum Sensing Scheme for Cognitive Radio  

E-Print Network [OSTI]

Cognitive radio that supports a secondary and opportunistic access to licensed spectrum shows great potential to dramatically improve spectrum utilization. Spectrum sensing performed by secondary users to detect unoccupied spectrum bands, is a key enabling technique for cognitive radio. This paper proposes a truncated sequential spectrum sensing scheme, namely the sequential shifted chi-square test (SSCT). The SSCT has a simple test statistic and does not rely on any deterministic knowledge about primary signals. As figures of merit, the exact false-alarm probability is derived, and the miss-detection probability as well as the average sample number (ASN) are evaluated by using a numerical integration algorithm. Corroborating numerical examples show that, in comparison with fixed-sample size detection schemes such as energy detection, the SSCT delivers considerable reduction on the ASN while maintaining a comparable detection performance.

Xin, Yan

2009-01-01T23:59:59.000Z

142

The impact of the European Union Emissions Trading Scheme on US aviation  

E-Print Network [OSTI]

We estimate the economic impacts on US airlines that may arise from the inclusion of aviation in the European Union Emissions Trading Scheme from 2012 to 2020. We find that the Scheme would only have a small impact on US ...

Malina, Robert

143

E-Print Network 3.0 - alternating coupling scheme Sample Search...  

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

r, 85.25.Am, 85.25.Cp I. INTRODUCTION The scheme by Makhlin et al.1 for coupling superconduct- ing... . Nevertheless, we will see that this scheme is at a serious disadvantage...

144

2D/3D Discrete Duality Finite Volume Scheme (DDFV) applied to ECG simulation.  

E-Print Network [OSTI]

2D/3D Discrete Duality Finite Volume Scheme (DDFV) applied to ECG simulation. DDFV scheme part, the method is used for the resolution of a problem arising in bio-mathematics: the ECG

Coudière, Yves

145

PROPOSAL OF A FINANCING SCHEME FOR A THIRD NPP IN BRAZIL  

SciTech Connect (OSTI)

This presentation discusses a proposal of a financing scheme for a third nuclear power plant in Brazil.

Filho, Z.D.T.

2004-10-06T23:59:59.000Z

146

E-Print Network 3.0 - asymptotic preserving scheme Sample Search...  

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

- Institut de Mathmatiques de Toulouse, Universit Paul Sabatier Collection: Mathematics 2 ASYMPTOTIC PRESERVING (AP) SCHEMES FOR MULTISCALE KINETIC AND HYPERBOLIC...

147

ON THE TRADEOFF BETWEEN COMPLEXITY AND PERFORMANCE OF ERROR PROTECTION SCHEMES FOR EMBEDDED CODES OVER  

E-Print Network [OSTI]

/channel conditions. A successful and effective family of such chan- nel coding schemes is UEP, which in the packet

Nørvåg, Kjetil

148

E-Print Network 3.0 - active defrost scheme Sample Search Results  

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

. . . . . . . . . . . . . . . . . . . . . . . 62 6 An Active Defrost Scheme for Balancing Energy Consumption and Food Quality Loss in Supermarket... , ... Source: Skogestad, Sigurd...

149

Table of Contents A Multivariate Signature Scheme with an almost cyclic public key . . . . . . . . . . . . . . . . . . . . . 2  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 The Oil and Vinegar Signature Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4.1 Security under direct attacks

150

Edinburgh Research Explorer An Energy Conserving Finite Difference Scheme for the  

E-Print Network [OSTI]

Edinburgh Research Explorer An Energy Conserving Finite Difference Scheme for the Simulation, Germany, September 1-5, 2014 AN ENERGY CONSERVING FINITE DIFFERENCE SCHEME FOR THE SIMULATION energy conserving scheme for the simulation of collisions between the snares and the resonant membrane

Millar, Andrew J.

151

Adaptive Restart for Accelerated Gradient Schemes Brendan O'Donoghue Emmanuel Cand`es  

E-Print Network [OSTI]

Adaptive Restart for Accelerated Gradient Schemes Brendan O'Donoghue Emmanuel Cand`es April 13- matically improve the convergence rate of accelerated gradient schemes. The analysis of the technique relies. In what we refer to as the `high momentum' regime the iterates generated by an accelerated gradient scheme

Candes, Emmanuel J.

152

Error Bounds for the Large Time Step Glimm Scheme Applied to Scalar Conservation Laws 1  

E-Print Network [OSTI]

for the Glimm scheme under the restriction of Courant numbers up to 1=2. 1. Introduction The large time step solution of (1) generated from the LTS Glimm scheme, #1;x the spatial mesh length and #1;t the time stepError Bounds for the Large Time Step Glimm Scheme Applied to Scalar Conservation Laws 1 Jinyang

153

A Study of the Security of Unbalanced Oil and Vinegar Signature Schemes  

E-Print Network [OSTI]

1 A Study of the Security of Unbalanced Oil and Vinegar Signature Schemes An Braeken, Christopher The Unbalanced Oil and Vinegar scheme (UOV) is a signature scheme based on multivariate quadratic equations, we study its security from several points of view. First, we are able to demonstrate

154

A kinetic scheme for pressurized flows in non uniform pipes  

E-Print Network [OSTI]

The aim of this paper is to present a kinetic numerical scheme for the computations of transient pressurised flows in closed water pipes with variable sections. Firstly, we detail the derivation of the mathematical model in curvilinear coordinates under some hypothesis and we performe a formal asymptotic analysis. Then the obtained system is written as a conservative hyperbolic partial differential system of equations, and we recall how to obtain the corresponding kinetic formulation based on an upwinding of the source term due to the "pseudo topography" performed in a close manner described by Perthame and al.

Bourdarias, Christian; Gerbi, Stphane

2008-01-01T23:59:59.000Z

155

Harmonic measurements from a group connected generator HVdc converter scheme  

SciTech Connect (OSTI)

A recent CIGRE document published in ELECTRA has described the potential benefits of a direct connection of generators to HVdc converters. While many theoretical contributions have been made, no practical test data has become available so far. This paper reports on harmonic tests carried out at the Benmore end of the New Zealand HVdc link operating as a group connected scheme. It was found that the measured harmonic current levels were well below specified generator ratings. Dynamic simulation accurately predicted the harmonic currents whereas the results of a steady state formulation were less reliable.

Macdonald, S.J.; Enright, W.; Arrillaga, J. [Univ. of Canterbury, Christchurch (New Zealand)] [Univ. of Canterbury, Christchurch (New Zealand); O`Brien, M.T.

1995-10-01T23:59:59.000Z

156

High-resolution methods for preserving the sum of mass fractions: improved ?-scheme and an alternative  

SciTech Connect (OSTI)

When high resolution convection schemes are used for discretizing chemical species mass balance equations, the mass fractions are not guaranteed to add to one. We show that a proposed remedy called ?-scheme (Darwish and Moukalled, Comput.Methods Appl.Mech. Engrg. 192 (2003): 1711) will degrade to a diffusive first-order scheme when a chemical species vanishes from the mixture, for example, because of chemical reactions. We propose an improvement to the ?-scheme to overcome this problem. Furthermore, a computationally efficient alternative scheme is proposed and evaluated with several examples, to quantify the improvements in the accuracy and the computational time.

Syamlal, Madhava; Benyahia, Sofiane

2013-11-20T23:59:59.000Z

157

Single-cone real-space finite difference schemes for the Dirac von Neumann equation  

E-Print Network [OSTI]

Two finite difference schemes for the numerical treatment of the von Neumann equation for the (2+1)D Dirac Hamiltonian are presented. Both utilize a single-cone staggered space-time grid which ensures a single-cone energy dispersion to formulate a numerical treatment of the mixed-state dynamics within the von Neumann equation. The first scheme executes the time-derivative according to the product rule for "bra" and "ket" indices of the density operator. It therefore directly inherits all the favorable properties of the difference scheme for the pure-state Dirac equation and conserves positivity. The second scheme proposed here performs the time-derivative in one sweep. This direct scheme is investigated regarding stability and convergence. Both schemes are tested numerically for elementary simulations using parameters which pertain to topological insulator surface states. Application of the schemes to a Dirac Lindblad equation and real-space-time Green's function formulations are discussed.

Schreilechner, Magdalena

2015-01-01T23:59:59.000Z

158

On the condensed matter scheme for emergent gravity and interferometry  

E-Print Network [OSTI]

An increasingly popular approach to quantum gravity rests on the idea that gravity (and maybe electromagnetism and the other gauge fields) might be an 'emergent phenomenon', in the sense of representing a collective behaviour resulting from a very different microscopic physics. A prominent example of this approach is the condensed matter scheme for quantum gravity, which considers the possibility that gravity emerges as an effective low-energy phenomenon from the quantum vacuum in a way similar to the emergence of collective excitations in condensed matter systems. This condensed matter view of the quantum vacuum clearly hints that, while the term 'ether' has been discredited for about a century, quantum gravity holds many (if not all) of the characteristics that have led people in the past to label various hypothetical substances with the term 'ether'. Since the last burst of enthusiasm for an ether, at the end of the 19th century, was brought to the grave in part by the performance of a series of important experiments in interferometry, the suggestion then naturally arises that maybe interferometry could also play a role in the current discussion on quantum gravity. We will highlight some aspects of this suggestion in the context of the condensed matter scheme for emergent gravity.

G. Jannes

2008-11-10T23:59:59.000Z

159

A new configurational bias scheme for sampling supramolecular structures  

E-Print Network [OSTI]

We present a new simulation scheme which allows an efficient sampling of reconfigurable supramolecular structures made of polymeric constructs functionalized by reactive binding sites. The algorithm is based on the configurational bias scheme of Siepmann and Frenkel and is powered by the possibility of changing the topology of the supramolecular network by a non-local Monte Carlo algorithm. Such plan is accomplished by a multi-scale modelling that merges coarse-grained simulations, describing the typical polymer conformations, with experimental results accounting for free energy terms involved in the reactions of the active sites. We test the new algorithm for a system of DNA coated colloids for which we compute the hybridisation free energy cost associated to the binding of tethered single stranded DNAs terminated by short sequences of complementary nucleotides. In order to demonstrate the versatility of our method, we also consider polymers functionalized by receptors that bind a surface decorated by ligands. In particular we compute the density of states of adsorbed polymers as a function of the number of ligand-receptor complexes formed. Such a quantity can be used to study the conformational properties of adsorbed polymers useful when engineering adsorption with tailored properties. We successfully compare the results with the predictions of a mean field theory. We believe that the proposed method will be a useful tool to investigate supramolecular structures resulting from direct interactions between functionalized polymers for which efficient numerical methodologies of investigation are still lacking.

Robin De Gernier; Tine Curk; Galina V. Dubacheva; Ralf P. Richter; Bortolo M. Mognetti

2014-12-09T23:59:59.000Z

160

Simple rules help select best hydrocarbon distillation scheme  

SciTech Connect (OSTI)

Separation economics depend mainly on investment for major equipment and energy consumption. This relationship, together with the fact that, in most cases, many alternative schemes will be proposed, make it essential to find an optimum scheme that minimizes overall costs. Practical solutions are found by applying heuristics -- exploratory problem-solving techniques that eliminate alternatives without applying rigorous mathematical procedures. These techniques have been applied to a case study. In the case study, a hydrocarbon mixture will be transported through a pipeline to a fractionation plant, where it will be separated into commercial products for distribution. The fractionation will consist of a simple train of distillation columns, the sequence of which will be defined by applying heuristic rules and determining the required thermal duties for each column. The facility must separate ethane, propane and mixed butanes, natural gasoline (light straight-run, or LSR, gasoline), and condensate (heavy naphtha). The ethane will be delivered to an ethylene plant as a gaseous stream, the propane and butanes will be stored in cryogenic tanks, and the gasoline and heavy naphtha also will be stored.

Sanchezllanes, M.T.; Perez, A.L.; Martinez, M.P.; Aguilar-Rodriguez, E.; Rosal, R. del (Inst. Mexicano del Petroleo, Mexico City (Mexico))

1993-12-06T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Generating Unstable Resonances for Extraction Schemes Based on Transverse Splitting  

E-Print Network [OSTI]

A few years ago, a novel multi-turn extraction scheme was proposed, based on particle trapping inside stable resonances. Numerical simulations and experimental tests have confirmed the feasibility of such a scheme for low order resonances. While the third-order resonance is generically unstable and those higher than fourth-order are generically stable, the fourth-order resonance can be either stable or unstable depending on the specifics of the system under consideration. By means of the Normal Form a general approach to control the stability of the fourth-order resonance has been derived. This approach is based on the control of the amplitude detuning and the general form for a lattice with an arbitrary number of sextupole and octupole families is derived in this paper. Numerical simulations have confirmed the analytical results and have shown that, when crossing the unstable fourth-order resonance, the region around the centre of the phase space is depleted and particles are trapped in only the four stable ...

Giovannozzi, M; Turchetti, G

2009-01-01T23:59:59.000Z

162

Policy brief | Price subsidy schemes for artemisinin-based combination theraPies (acts): do they work? | 1 Price Subsidy Schemes for Artemisinin-Based  

E-Print Network [OSTI]

Policy brief | Price subsidy schemes for artemisinin-based combination theraPies (acts): do they work? | 1 Price Subsidy Schemes for Artemisinin-Based Combination Therapies (ACTs): Do They Work of act is very limited, partly due to its high price in pharmacies and retail stores. the affordable

Klein, Ophir

163

Iron beam acceleration using direct plasma injection scheme  

SciTech Connect (OSTI)

A new set of vanes of radio frequency quadrupole (RFQ) accelerator was commissioned using highly charged iron beam. To supply high intensity heavy ion beams to the RFQ, direct plasma injection scheme (DPIS) with a confinement solenoid was adopted. One of the difficulties to utilize the combination of DPIS and a solenoid field is a complexity of electro magnetic field at the beam extraction region, since biasing high static electric field for ion extraction, RFQ focusing field, and the solenoid magnetic field fill the same space simultaneously. To mitigate the complexity, a newly designed magnetic field clamps were used. The intense iron beam was observed with bunched structure and the total accelerated current reached 2.5 nC.

Okamura, M., E-mail: okamura@bnl.gov [Brookhaven National Laboratory, Upton, New York 11973 (United States); RIKEN-BNL Research Center, Upton, New York 11973 (United States); Kanesue, T. [Brookhaven National Laboratory, Upton, New York 11973 (United States)] [Brookhaven National Laboratory, Upton, New York 11973 (United States); Yamamoto, T. [Waseda University, Shinjuku, Tokyo 169-8555 (Japan)] [Waseda University, Shinjuku, Tokyo 169-8555 (Japan); Fuwa, Y. [Kyoto University, Uji, Kyoto 611-0011 (Japan) [Kyoto University, Uji, Kyoto 611-0011 (Japan); RIKEN, Wako, Saitama 351-0198 (Japan)

2014-02-15T23:59:59.000Z

164

Proposed bunching scheme for a polarized H/sup -/ injector  

SciTech Connect (OSTI)

Improvements to the polarized H/sup -/ injector at LAMPF will include a two-stage buncher and beam chopper. The buncher scheme will permit the compression of a major part of the current in 20 rf cycles of the drift-tube linac (100 nsec) into a single rf cycle (5 nsec), thus making possible time-of-flight experiments with the polarized H/sup -/ beam. A proposed first buncher stage would use a ramp drive waveform; the second stage, a sinusoidal waveform. Design and sensitivity calculations are summarized, including beam energy considerations, buncher and chopper drive requirements, and longitudinal and transverse beam dynamics. The calculations indicate that about 70% of the beam from the source may be bunched in the 1-nsec acceptance region of the linac, with less than 0.1% of the beam in neighboring rf cycles. 5 figs.

Swain, G.R.; Browman, A.A.

1985-01-01T23:59:59.000Z

165

Basic issues associated with four potential EUV resist schemes  

SciTech Connect (OSTI)

Four of the better developed resist schemes that are outgrowths of DUV (248 and 193 nm) resist development are considered as candidates for EUV. They are as follows: trilayer, a thin imaging layer on top of a refractor masking/pattern transfer layer on top of a planarizing and processing layer (PPL); solution developed, organometallic bilayer where the imaging and masking layer have been combined into one material on top of a PPL; and finally silylated resists. They are examined in a very general form without regard to the specifics of chemistry of the variations within each group, but rather to what is common to each group and how that affects their effectiveness as candidates for a near term EUV resist. In particular they are examined with respect to sensitivity, potential resolution, optical density, etching selectivity during pattern transfer, and any issues associated with pattern fidelity such as swelling.

Wheeler, D.R. [Sandia National Labs., Albuquerque, NM (United States); Kubiak, G.; Ray-Chaudhuri, A.; Henderson, C. [Sandia National Labs., Livermore, CA (United States)

1996-06-01T23:59:59.000Z

166

CAISO flicks switch on nodal scheme and lights stay on  

SciTech Connect (OSTI)

In 2000-01, two years after introducing a competitive wholesale power auction in California - with a separate day-ahead zonal market operated by the California Power Exchange and a zonal market for ancillary services and balancing energy operated by the California Independent System Operator (CAISO) - the California market collapsed from exorbitant prices, flagrant gaming, and abuse of market power. Nine years later, CAISO introduced a nodal pricing auction for the wholesale market in April, replacing the zonal scheme, which was among many causes of the original market's demise. With nearly 3,000 nodes on the network, high prices in one region do not affect prices everywhere on the system. After investing some $200 million to upgrade the software, countless delays, and 18 months of market simulation and testing, the new auction was introduced and nothing unusual happened.

NONE

2009-06-15T23:59:59.000Z

167

Impact of Geoengineering Schemes on the Global Hydrological Cycle  

SciTech Connect (OSTI)

The rapidly rising CO{sub 2} level in the atmosphere has led to proposals of climate stabilization via 'Geoengineering' schemes that would mitigate climate change by intentionally reducing the solar radiation incident on earth's surface. In this paper, we address the impact of these climate stabilization schemes on the global hydrological cycle, using equilibrium simulations from an atmospheric general circulation model coupled to a slab ocean model. We show that insolation reductions sufficient to offset global-scale temperature increases lead to a decrease in the intensity of the global hydrologic cycle. This occurs because solar forcing is more effective in driving changes in global mean evaporation than is CO{sub 2} forcing of a similar magnitude. In the model used here, the hydrologic sensitivity, defined as the percentage change in global mean precipitation per degree warming, is 2.4% for solar forcing, but only 1.5% for CO{sub 2} forcing. Although other models and the climate system itself may differ quantitatively from this result, the conclusion can be understood based on simple considerations of the surface energy budget and thus is likely to be robust. Compared to changing temperature by altering greenhouse gas concentrations, changing temperature by varying insolation results in larger changes in net radiative fluxes at the surface; these are compensated by larger changes in latent and sensible heat fluxes. Hence the hydrological cycle is more sensitive to temperature adjustment via changes in insolation than changes in greenhouse gases. This implies that an alteration in solar forcing might offset temperature changes or hydrological changes from greenhouse warming, but could not cancel both at once.

Bala, G; Duffy, P; Taylor, K

2007-12-07T23:59:59.000Z

168

Lattice Boltzmann method and gas-kinetic BGK scheme in the low-Mach number viscous flow simulations  

E-Print Network [OSTI]

and collisions process. On the other hand, the gas-kinetic BGK scheme is a finite volume scheme, where the timeLattice Boltzmann method and gas-kinetic BGK scheme in the low-Mach number viscous flow simulations method (LBM) and the gas-kinetic BGK scheme are based on the numerical discretization of the Boltzmann

Xu, Kun

169

A scheme comparison of Autler-Townes based slow light in inhomogeneously broadened quantum dot media  

E-Print Network [OSTI]

We propose a method to achieve significant optical signal delays exploiting the effect of Autler-Townes splitting in an inhomogeneously broadened quantum dot medium. The absorption and slow-down effects are compared for three schemes i.e. $\\Xi$, V and $\\Lambda$, corresponding to different excitation configurations. Qualitative differences of the V-scheme compared to the $\\Xi$- and $\\Lambda$-scheme are found, which show that features of Autler-Townes splitting are only revealed in the V-scheme. The underlying physical mechanisms causing this discrepancy are analyzed and discussed. Finally we compare field propagation calculations of the schemes showing significantly larger achievable signal delays for the V-scheme despite finite absorption of the coupling field. This opens the possibility for using waveguide structures for both coupling and probe fields, thus significantly increasing the achievable signal delays.

Per Lunnemann; Jesper Mrk

2010-08-23T23:59:59.000Z

170

Impacts of Microphysical Scheme on Convective and Stratiform Characteristics in Two High Precipitation Squall Line Events  

SciTech Connect (OSTI)

This study investigates the impact of snow, graupel, and hail processes on the simulated squall lines over the Southern Great Plains in the United States. Weather Research and Forecasting (WRF) model is used to simulate two squall line events in May 2007, and the results are validated against radar and surface observations in Oklahoma. Several microphysics schemes are tested in this study, including WRF 5-Class Microphysics Scheme (WSM5), WRF 6-Class Microphysics Scheme (WSM6), Goddard Three Ice scheme (Goddard 3-ice) with graupel, Goddard Two Ice scheme (Goddard 2-ice), and Goddard 3-ice hail scheme. The simulated surface precipitation is sensitive to the microphysics scheme, and especially to whether graupel or hail category is included. All of the three ice (3-ice) schemes overestimated the total precipitation, within which WSM6 has the highest overestimation. Two ice (2-ice) schemes, missing a graupel/hail category, produced less total precipitation than 3-ice schemes. By applying a radar-based convective/stratiform partitioning algorithm, we find that by including the graupel/hail processes, there is an increase in areal coverage, precipitation intensity, updraft and downdraft intensity in convective region and a reduction of areal coverage and its precipitation intensity in stratiform region. For vertical structures, all the bulk schemes, especially 2-ice schemes, have the highest reflectivity located at upper levels (~8 km), which is unrealistic compared to observations. In addition, this study shows the radar-based convective/stratiform partitioning algorithm can reasonably identify WRF simulated precipitation, wind and microphysics fields in both convective and stratiform regions.

Wu, Di; Dong, Xiquan; Xi, Baike; Feng, Zhe; Kennedy, Aaron; Mullendore, Gretchen; Gilmore, Matthew; Tao, Wei-Kuo

2013-10-04T23:59:59.000Z

171

Enhanced Harmonic Up-Conversion Using a Hybrid HGHG-EEHG Scheme  

SciTech Connect (OSTI)

We introduce a novel harmonic generation scheme which can be used, for a given desired harmonic, to achieve higher bunching factors, weaker chicanes, and/or less final energy spread than can be achieved using Echo-Enabled Harmonic Generation. This scheme only requires a single laser with relatively low power, and is a hybrid of High-Gain Harmonic Generation and EEHG. We present a design of this scheme applied to the Next Generation Light Source (NGLS).

Marksteiner, Quinn R. [Los Alamos National Laboratory; Bishofberger, Kip A. [Los Alamos National Laboratory; Carlsten, Bruce E. [Los Alamos National Laboratory; Freund, Henry P. [Los Alamos National Laboratory; Yampolsky, Nikolai A. [Los Alamos National Laboratory

2012-04-30T23:59:59.000Z

172

Scheme for implementing the Deutsch-Jozsa algorithm in cavity QED  

SciTech Connect (OSTI)

We propose a scheme for realizing the Deutsch-Jozsa algorithm in cavity QED. The scheme is based on the resonant interaction of atoms with a cavity mode. The required experimental techniques are within the scope of what can be obtained in the microwave cavity QED setup. The experimental implementation of the scheme would be an important step toward more complex quantum computation in cavity QED.

Zheng Shibiao [Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002 (China)

2004-09-01T23:59:59.000Z

173

A New Scheme for the Promotion of Renewable Energies in Developing...  

Open Energy Info (EERE)

Regulated Purchase Tariff Jump to: navigation, search Tool Summary LAUNCH TOOL Name: A New Scheme for the Promotion of Renewable Energies in Developing Countries: The Renewable...

174

An Efficient, Energy Stable Scheme for the Cahn-Hilliard-Brinkman ...  

E-Print Network [OSTI]

We present an unconditionally energy stable and uniquely solvable finite difference ... The scheme is based on a convex splitting of the discrete CH energy and.

2012-06-09T23:59:59.000Z

175

Energy Stable Schemes for Cahn-Hilliard phase-field model of two ...  

E-Print Network [OSTI]

Aug 25, 2010 ... Several efficient and energy stable time discretization schemes for the coupled nonlinear Cahn-Hilliard phase-field system for both the matched...

2010-08-14T23:59:59.000Z

176

E-Print Network 3.0 - active absorber scheme Sample Search Results  

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

with Neuroendocrine Tumors Summary: , this contribution could not be included under the MIRD scheme. Instead, the tumor activity was assumed... most of the 64Cu activity was...

177

E-Print Network 3.0 - access control scheme Sample Search Results  

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

Access Scheduling Schemes Zhibin Fang Xian-He Sun Yong Chen Surendra Byna... access scheduling is performed by a shared memory controller that is integrated onto the same...

178

Adaptive MPEG-2 Video Data Hiding Scheme Anindya Sarkar, Upamanyu Madhow, Shivkumar Chandrasekaran and  

E-Print Network [OSTI]

Adaptive MPEG-2 Video Data Hiding Scheme Anindya Sarkar, Upamanyu Madhow, Shivkumar Chandrasekaran author information: (Send correspondence to Anindya Sarkar) Anindya Sarkar: E-mail: anindya

Madhow, Upamanyu

179

High Energy Density Physics and Exotic Acceleration Schemes  

SciTech Connect (OSTI)

The High Energy Density and Exotic Acceleration working group took as our goal to reach beyond the community of plasma accelerator research with its applications to high energy physics, to promote exchange with other disciplines which are challenged by related and demanding beam physics issues. The scope of the group was to cover particle acceleration and beam transport that, unlike other groups at AAC, are not mediated by plasmas or by electromagnetic structures. At this Workshop, we saw an impressive advancement from years past in the area of Vacuum Acceleration, for example with the LEAP experiment at Stanford. And we saw an influx of exciting new beam physics topics involving particle propagation inside of solid-density plasmas or at extremely high charge density, particularly in the areas of laser acceleration of ions, and extreme beams for fusion energy research, including Heavy-ion Inertial Fusion beam physics. One example of the importance and extreme nature of beam physics in HED research is the requirement in the Fast Ignitor scheme of inertial fusion to heat a compressed DT fusion pellet to keV temperatures by injection of laser-driven electron or ion beams of giga-Amp current. Even in modest experiments presently being performed on the laser-acceleration of ions from solids, mega-amp currents of MeV electrons must be transported through solid foils, requiring almost complete return current neutralization, and giving rise to a wide variety of beam-plasma instabilities. As keynote talks our group promoted Ion Acceleration (plenary talk by A. MacKinnon), which historically has grown out of inertial fusion research, and HIF Accelerator Research (invited talk by A. Friedman), which will require impressive advancements in space-charge-limited ion beam physics and in understanding the generation and transport of neutralized ion beams. A unifying aspect of High Energy Density applications was the physics of particle beams inside of solids, which is proving to be a very important field for diverse applications such as muon cooling, fusion energy research, and ultra-bright particle and radiation generation with high intensity lasers. We had several talks on these and other subjects, and many joint sessions with the Computational group, the EM Structures group, and the Beam Generation group. We summarize our groups' work in the following categories: vacuum acceleration schemes; ion acceleration; particle transport in solids; and applications to high energy density phenomena.

Cowan, T.; /General Atomics, San Diego; Colby, E.; /SLAC

2005-09-27T23:59:59.000Z

180

A LOW POWER SCHEDULING SCHEME WITH RESOURCES OPERATING AT MULTIPLE VOLTAGES  

E-Print Network [OSTI]

A LOW POWER SCHEDULING SCHEME WITH RESOURCES OPERATING AT MULTIPLE VOLTAGES Ali Manzak and Chaitali Tempe, AZ 852875706 istanbul@asu.edu, chaitali@asu.edu ABSTRACT This paper presents a new resource the resources operate at multi ple voltages. The scheduling scheme is list based. In each control cycle

Kambhampati, Subbarao

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Convergence of the Approximation Scheme to American Option Pricing via the Discrete Morse Semiflow  

SciTech Connect (OSTI)

We consider the approximation scheme to the American call option via the discrete Morse semiflow, which is a minimizing scheme of a time semi-discretized variational functional. In this paper we obtain a rate of convergence of approximate solutions and the convergence of approximate free boundaries. We mainly apply the theory of variational inequalities and that of viscosity solutions to prove our results.

Ishii, Katsuyuki, E-mail: ishii@maritime.kobe-u.ac.jp [Kobe University, Graduate School of Maritime Sciences (Japan); Omata, Seiro, E-mail: omata@kenroku.kanazawa-u.ac.jp [Kanazawa University, School of Mathematics and Physics, Institute of Science and Engineering (Japan)

2011-12-15T23:59:59.000Z

182

An improved numerical scheme for a coupled system to model soil erosion and polydispersed sediments transport  

E-Print Network [OSTI]

An improved numerical scheme for a coupled system to model soil erosion and polydispersed sediments, the positivity of both water depth and sediment concentrations. Recently, a well-balanced MUSCL-Hancock scheme step is required to ensure the positivity of sediment concentrations. The main result of this paper

Boyer, Edmond

183

Gas-Kinetic Scheme for Continuum and Near-Continuum Hypersonic Flows  

E-Print Network [OSTI]

Gas-Kinetic Scheme for Continuum and Near-Continuum Hypersonic Flows Wei Liao and Li-Shi Luo Old. The gas-kinetic schemes are validated with simulations of the hypersonic flow past a hollow flare at Mach and simulation of complex hypersonic flows become very challenging for computa- tional fluid dynamics (CFD) [1

Xu, Kun

184

Low Magnetic Reynolds Number Hypersonic MHD Flow Using High Order WENO Schemes  

E-Print Network [OSTI]

Low Magnetic Reynolds Number Hypersonic MHD Flow Using High Order WENO Schemes Jaejin Lee , Manuel diffusion scheme for 3D Navier-Stokes equa- tions. We present results for hypersonic laminar flows around. I. Introduction Hypersonic vehicles generate shocks that can heat the air sufficiently to partially

Zha, Gecheng

185

Gas Kinetic Scheme for Continuum and Near-Continuum Hypersonic Flows  

E-Print Network [OSTI]

Gas Kinetic Scheme for Continuum and Near-Continuum Hypersonic Flows Wei Liao and Li-Shi Luo Old for the near-continuum flows. The gas-kinetic schemes are validated with simulations of the hypersonic flow thickness, modeling and simulation of complex hypersonic flows become very challenging for computational

Luo, Li-Shi

186

The construction of discretely conservative finite volume schemes that also globally conserve energy or entropy  

E-Print Network [OSTI]

for the dissipation of energy by the shock waves. These results are extended to systems of conservation laws that if the conservation law has an accompanying energy estimate, it should be possible to construct discrete schemes whichThe construction of discretely conservative finite volume schemes that also globally conserve

Stanford University

187

Variable flavor number schemes versus fixed order perturbation theory for charm quark electroproduction  

E-Print Network [OSTI]

Data for D*(2010) meson electroproduction in the range 10 1 GeV^2 to test whether one can distinguish between different theoretical schemes for charm quark electroproduction. We find that up to the largest Q2 measured, it is not possible to make such a differentiation. Then we point out the regions where differences between the various schemes arise.

A. Chuvakin; J. Smith; B. W. Harris

2000-10-31T23:59:59.000Z

188

Kyotoforcommuters Offset schemes are a small but potentially useful addition to the carbon balance sheet.  

E-Print Network [OSTI]

Kyotoforcommuters Offset schemes are a small but potentially useful addition to the carbon balance response to it is carbon offsetting, a practice that allows people to compensate for the impact of the more popular carbon offsetting schemes allow con- sumers to buy credits on an emerging, but unregulated

Cai, Long

189

Hybrid PID-fuzzy control scheme for managing energy resources in buildings  

E-Print Network [OSTI]

Hybrid PID-fuzzy control scheme for managing energy resources in buildings Benjamin Paris, Julien/off" and PID, or "advanced" schemes, such as MPC (Model Predictive Control). Another approach would having to model the process to be controlled. PID controllers being commonly used in buildings

Paris-Sud XI, Université de

190

Arctic Region Evaluation of the Hydro-Thermodynamic Soil Vegetation Scheme (HTSVS)  

E-Print Network [OSTI]

Arctic Region Evaluation of the Hydro-Thermodynamic Soil Vegetation Scheme (HTSVS) Pamela Spier, University of Alaska, Fairbanks, AK Abstract This paper presents an evaluation of the Hydro. Introduction and Motivation The Hydro-Thermodynamic Soil Vegetation Scheme (HTSVS, Kramm et al. 1996, Mölders

Moelders, Nicole

191

A Secure Mobile VPN Scheme for UMTS Christos Xenakis, Nikos Loukas and Lazaros Merakos  

E-Print Network [OSTI]

A Secure Mobile VPN Scheme for UMTS Christos Xenakis, Nikos Loukas and Lazaros Merakos {xenakis, loukas, merakos}@di.uoa.gr Abstract - In this paper, a mobile Virtual Private Network (VPN) scheme for the Universal Mobile Telecommunication System (UMTS) is proposed and analyzed from a security

Stavrakakis, Ioannis

192

A Trustful Authentication and Key Exchange Scheme (TAKES) for Ad Hoc Networks  

E-Print Network [OSTI]

A Trustful Authentication and Key Exchange Scheme (TAKES) for Ad Hoc Networks Tony Cheneau National public key distribution scheme adapted to ad hoc networks called TAKES for Trustful Authentication, or even implementing a light naming system can be enabled on top of ad hoc networks. TAKES is formally

Paris-Sud XI, Université de

193

Energy Balancing Routing Schemes for Low-Power Wireless Networks Eun-Sook Sung, Miodrag Potkonjak  

E-Print Network [OSTI]

Energy Balancing Routing Schemes for Low-Power Wireless Networks Eun-Sook Sung, Miodrag Potkonjak}@cs.ucla.edu Abstract-- We address the problem of energy balancing in multi-hop wireless networks to optimize results show, firstly, that both schemes achieve significant improvement of energy balancing proportional

Potkonjak, Miodrag

194

A Cluster-based Energy Balancing Scheme in Heterogeneous Wireless Sensor Networks  

E-Print Network [OSTI]

A Cluster-based Energy Balancing Scheme in Heterogeneous Wireless Sensor Networks Jing Ai, Damla,turgut,lboloni}@cpe.ucf.edu Abstract. In this paper, we propose a novel, cluster-based energy balancing scheme. We assume the existence significant improvements in energy balancing leading to a longer con- nected time of the network

Bölöni, Ladislau L

195

Memory Consumption Analysis for the GOE and PET Unequal Erasure Protection Schemes  

E-Print Network [OSTI]

Memory Consumption Analysis for the GOE and PET Unequal Erasure Protection Schemes Aline Roumy Encoding Transmission (PET) [2], while the other family uses a dedicated signaling scheme, as is the case such a practical metric as the peak memory consumption. Thanks to a modeling of the packet storage behavior

Paris-Sud XI, Université de

196

A Conditional Proxy Broadcast Re-Encryption Scheme Supporting Timed-Release  

E-Print Network [OSTI]

Huang2 , Roman Schlegel1 , Duncan S. Wong1 , and Chunming Tang3 1 Department of Computer Science, City with the existing CPBRE and Timed-Release Proxy Re-Encryption (TR-PRE) schemes, our scheme achieves better to the pre-specified time. The above problem can be solved by using [10] as follows. The organizer first

197

Evaluation of an Optimal Watermark Tampering Attack Against Dirty Paper Trellis Schemes  

E-Print Network [OSTI]

Evaluation of an Optimal Watermark Tampering Attack Against Dirty Paper Trellis Schemes Patrick Bas powerful attacks. This paper further refines an attack on dirty paper watermarking schemes which relies to be able to handle `complex' trellises. Moreover, the ef- ficiency of this attack has been evaluated

Paris-Sud XI, Université de

198

A mesh-free convex approximation scheme for KohnSham density functional theory  

E-Print Network [OSTI]

A mesh-free convex approximation scheme for Kohn­Sham density functional theory Phanish: Convex approximation scheme Mesh-free methods Kohn­Sham Density functional theory Maximum-entropy a b s t r a c t Density functional theory developed by Hohenberg, Kohn and Sham is a widely accepted

Ortiz, Michael

199

Energy Efficiency Analysis of Link Layer Backoff Schemes on Point-to-Point  

E-Print Network [OSTI]

416 Energy Efficiency Analysis of Link Layer Backoff Schemes on Point-to-Point Markov Fading Links schemes are shown to achieve better energy ef- ficiency without compromising much on the link layer throughput performance. Keywords - Backoff algorithms, fading channels, en- ergy eficiency. 1 Introduction

Chockalingam, A.

200

Efficient MIMO-OFDM Schemes for Future Terrestrial Digital TV with Unequal Received  

E-Print Network [OSTI]

.nasser@insa-rennes.fr Abstract- This article investigates the effect of equal and unequal received powers on the performances- orthogonal schemes: the BLAST scheme, the Linear Dispersion (LD) code and the Golden code, and we compare for modelling the effect of unequal received powers on different receiving antennas. Therefore, we analyze

Paris-Sud XI, Universit de

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A Scheme for Reliable Delivery of Events in Distributed Middleware Systems Shrideep Pallickara and Geoffrey Fox  

E-Print Network [OSTI]

A Scheme for Reliable Delivery of Events in Distributed Middleware Systems Shrideep Pallickara. These interactions can be encapsulated in events. We describe a scheme for the reliable delivery of events pertaining to transactions, data interchange, system conditions and finally the search, discovery

202

A prediction based control scheme for networked systems with delays and packet dropouts  

E-Print Network [OSTI]

A prediction based control scheme for networked systems with delays and packet dropouts Lars Gr based prediction and time-stamps in order to compensate for delays and packet dropouts to analyze the properties of our scheme, we introduce the notion of prediction consistency which enables us

Knobloch,Jürgen

203

Cryptanalysis of an IDbased Password Authentication Scheme using Smart Cards and  

E-Print Network [OSTI]

Cryptanalysis of an IDbased Password Authentication Scheme using Smart Cards and Fingerprints Michael Scott School of Computer Applications Dublin City University Ballymun, Dublin 9, Ireland. mike two IDbased password authen tication schemes for logging onto a remote network server using smart

204

Energy Aware Power Allocation strategies for Multihop-Cooperative transmission schemes  

E-Print Network [OSTI]

1 Energy Aware Power Allocation strategies for Multihop-Cooperative transmission schemes S. Savazzi the route has been optimized separately (e.g., by any energy aware routing algorithm [3]) and the network scheme is known to be an energy aware strategy that allocate the power on each independent hop according

Spagnolini, Umberto

205

Comparison of Allocation Schemes for Virtual Machines in Energy-aware  

E-Print Network [OSTI]

Comparison of Allocation Schemes for Virtual Machines in Energy-aware Server Farms TIEN VAN DO. In this paper, a simple energy-aware policy incorporating allocation schemes of virtual servers is proposed in a server farm. Keywords: green computing; virtualization; virtual machine; performance model; energy-aware

Do, Tien Van

206

Secure Demand Shaping for Smart Grid On constructing probabilistic demand response schemes  

E-Print Network [OSTI]

Secure Demand Shaping for Smart Grid On constructing probabilistic demand response schemes. Developing novel schemes for demand response in smart electric gird is an increasingly active research area/SCADA for demand response in smart infrastructures face the following dilemma: On one hand, in order to increase

Sastry, S. Shankar

207

NUMERICAL SCHEMES FOR LOW MACH WAVE BREAKING FREDERIC GOLAY AND PHILIPPE HELLUY  

E-Print Network [OSTI]

for compressible air- water flows: an isothermal Euler model ("isothermal model") and a com- plete Euler model. In this work, we describe a finite volume scheme for the compu- tation of incompressible air-water flows. We use an artificial compressibility approach that permits us to use a completely explicit scheme. We

Boyer, Edmond

208

A conservative Lagrangian scheme for solving compressible fluid flows with multiple internal energy equations  

E-Print Network [OSTI]

A conservative Lagrangian scheme for solving compressible fluid flows with multiple internal energy. In some of these ap- plications, multiple internal energy equations such as those for electron, ion developed which are designed to solve the internal energy equation directly. These schemes can be easily

Shu, Chi-Wang

209

Kelvin Nanotechnology Ltd (KNT) GUIDE TO INFORMATION AVAILABLE THROUGH OUR PUBLICATION SCHEME  

E-Print Network [OSTI]

Kelvin Nanotechnology Ltd (KNT) GUIDE TO INFORMATION AVAILABLE THROUGH OUR PUBLICATION SCHEME it might cost. Kelvin Nanotechnology Ltd has adopted the Model Publication Scheme 2011 produced publication and explain why. Copyright Where Kelvin Nanotechnology Ltd holds the copyright in its published

Glasgow, University of

210

Three-party simultaneous quantum secure direct communication scheme with EPR pairs  

E-Print Network [OSTI]

We present a scheme for three-party simultaneous quantum secure direct communication by using EPR pairs. In the scheme, three legitimate parties can simultaneously exchange their secret messages. It is also proved to be secure against the intercept-and-resend attack, the disturbance attack and the entangled-and-measure attack.

Mei-Yu Wang; Feng-Li Yan

2007-01-09T23:59:59.000Z

211

A dynamic estimation scheme of specific growth rates of bacteria for an anaerobic wastewater treatment process  

E-Print Network [OSTI]

A dynamic estimation scheme of specific growth rates of bacteria for an anaerobic wastewater anal- ysis and estimation schemes for specific growth rates for an anaerobic wastewater treatment the organic and inorganic materials) of municipal or industrial wastewater often needs to be highly reduced

Paris-Sud XI, Université de

212

Low complexity concurrent constant modulus algorithm and soft decision directed scheme for blind  

E-Print Network [OSTI]

Low complexity concurrent constant modulus algorithm and soft decision directed scheme for blind-directed (DD) scheme provides a state-of-the-art low-complexity blind equalisation technique for high of the standard CMA blind equaliser, this concurrent CMA and DD blind equaliser achieves a dramatic improvement

Chen, Sheng

213

A Generalized Diffusion Based Inter-Iteration Nonlinear Bilateral Filtering Scheme for PET  

E-Print Network [OSTI]

A Generalized Diffusion Based Inter-Iteration Nonlinear Bilateral Filtering Scheme for PET Image inter-iteration filtering scheme based diffusion MAP estimate for PET image reconstruction is proposed,version1 #12;1. Introduction Positron emission tomography (PET) is one of the most important imaging tools

Paris-Sud XI, Université de

214

A gas-kinetic scheme for reactive ows Yongsheng Lian, Kun Xu*  

E-Print Network [OSTI]

A gas-kinetic scheme for reactive ¯ows Yongsheng Lian, Kun Xu* Department of Mathematics, Hong Kong in revised form 22 July 1999; accepted 22 July 1999 Abstract In this paper, the gas-kinetic BGK scheme for the compressible ¯ow equations is extended to chemical reactive ¯ow. The mass fraction of the unburnt gas

Xu, Kun

215

A NEW VIDEO-OBJECT WATERMARKING SCHEME ROBUST TO OBJECT MANIPULATION  

E-Print Network [OSTI]

A NEW VIDEO-OBJECT WATERMARKING SCHEME ROBUST TO OBJECT MANIPULATION P. Bas and B. Macq presents a watermarking scheme for image or video objects. The watermarking of video objects implies such as Mpeg-4 and Jpeg-2000, the notion of video-object or image- object is more and more widespread [1

Paris-Sud XI, Universit de

216

MQ Signature and Proxy Signature Schemes with Exact Security Based on UOV Signature  

E-Print Network [OSTI]

MQ Signature and Proxy Signature Schemes with Exact Security Based on UOV Signature Shaohua Tang1 of the main approaches to guar- antee the security of communication in the post-quantum world. In this paper, we propose a combined MQ signature scheme based on the yet unbroken UOV (Unbalanced Oil and Vinegar

217

An Efficient Energy Curtailment Scheme For Outage Management in Smart Grid  

E-Print Network [OSTI]

An Efficient Energy Curtailment Scheme For Outage Management in Smart Grid Wayes Tushar§, Jian--In this paper an efficient energy curtailment scheme is studied, which enables the power users of a smart grid. Considering the advantages of a two-way communications infrastructure for any future smart grid, a non

Durrani, Salman

218

A Micro-Payment Scheme Encouraging Collaboration in Multi-Hop Cellular Networks  

E-Print Network [OSTI]

A Micro-Payment Scheme Encouraging Collaboration in Multi-Hop Cellular Networks Markus Jakobsson1. We propose a micro-payment scheme for multi-hop cellular networks that encourages collaboration ­ makes collaboration rational and cheating undesirable. Keywords: audit, collaboration, detection, micro

Levente, Buttyán

219

Scheme for implementing the Deutsch-Jozsa algorithm via atomic ensembles  

E-Print Network [OSTI]

We propose a physical scheme for implementing the Deutsch-Jozsa algorithm using atomic ensembles and optical devices. The scheme has inherent fault tolerance to the realistic noise and efficient scaling with the number of ensembles for some entangled states within the reach of current technology. It would be an important step toward more complex quantum computation via atomic ensembles.

Ping Dong; Zheng-Yuan Xue; Ming Yang; Zhuo-Liang Cao

2005-10-18T23:59:59.000Z

220

An efficient numerical terrestrial scheme (ENTS) for fast earth system modelling  

E-Print Network [OSTI]

An efficient numerical terrestrial scheme (ENTS) for fast earth system modelling Mark Williamson Working Paper 83 #12;An efficient numerical terrestrial scheme (ENTS) for fast earth system modelling Mark for long time period simulations and large ensemble studies in Earth system models of intermediate

Williamson, Mark

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Research Summary Evaluation of the Better Woodlands for Wales Grant Scheme  

E-Print Network [OSTI]

. The scheme was shown to have had small, but measurable impacts on carbon sequestration, biodiversity benefits. Methods o Carbon sequestration values draw upon the UK government's approach to valuing carbon. o Benefit that planted as a consequence of the BWW scheme. Carbon sequestration values show that over a 20-year time

222

High Resolution Wave Propagation Schemes for Two-Fluid Plasma Simulations  

E-Print Network [OSTI]

High Resolution Wave Propagation Schemes for Two-Fluid Plasma Simulations Ammar H. Hakim Information and Learning, 300 North Zeeb Road, Ann Arbor, MI 48106-1346, 1-800-521-0600, to whom the author Abstract High Resolution Wave Propagation Schemes for Two-Fluid Plasma Simulations Ammar H. Hakim Chair

Shumlak, Uri

223

On the effect of INQUERY term-weighting scheme on query-sensitive similarity measures  

E-Print Network [OSTI]

and demonstrated better retrieval performance relative to the latter. We test whether introducing one of these schemes, INQUERY, will offer any benefit over the ltc scheme when used in the context of QSS measures. The testing procedure uses the Nearest Neighbor (NN...

Kini, Ananth Ullal

2006-04-12T23:59:59.000Z

224

Bluenet a New Scatternet Formation Scheme Zhifang Wang, Robert J. Thomas, Zygmunt Haas  

E-Print Network [OSTI]

and facilitate supplier and customer cooperation in an integrated supply-side and demand-side management scheme. In this paper we present "Bluenet" as a novel and practical scheme for building an efficient scatternet for data and information flow at low cost. During recent years, there has been a substantial demand

225

A 2D/3D Discrete Duality Finite Volume Scheme. Application to ECG simulation  

E-Print Network [OSTI]

A 2D/3D Discrete Duality Finite Volume Scheme. Application to ECG simulation Y. Coudi`ere Universit-10Oct2008 #12;A 2D/3D DDFV scheme for ECG simulation 1 Introduction Computer models of the electrical-known electrocardiogram (ECG). It gives a non-invasive representation of the cardiac electrical function. Un- derstanding

Paris-Sud XI, Université de

226

BCS theory of superconductivity: the world's largest Madoff scheme?  

E-Print Network [OSTI]

The time-tested BCS theory of superconductivity is generally accepted to be the correct theory of conventional superconductivity by physicists and, by extension, by the world at large. In a different realm of human activity, until very recently Bernard Madoff's time-tested investment operation was generally accepted as true and legitimate in the financial world. Madoff's Ponzi scheme, where old investors were being paid off by funds contributed by new investors, was fundamentally flawed, yet was able to thrive for decades because of many vested interests. `Red flags' suggesting its illegitimacy were ignored. Here I suggest that the same is true of BCS theory. There are an increasing number of `red flags' that strongly suggest the possibility that BCS theory may be fundamentally flawed. For example, an ever-growing number of superconductors are being classified as `unconventional', not described by the conventional BCS theory and each requiring a different physical mechanism. In addition, I argue that BCS theory is unable to explain the Meissner effect, $the$ most fundamental property of superconductors. There are several other phenomena in superconductors for which BCS theory provides no explanation, and BCS theory has proven unable to predict any new superconducting compounds. From one day to the next, Madoff's edifice came crashing down and a staggering 50 billion dollars evaporated, and I suggest that this may also be the fate of BCS theory. I outline an alternative theory to conventional BCS theory proposed to apply to all superconductors, `conventional' as well as `unconventional', that offers an explanation for the Meissner effect as well as for other puzzles and provides clear guidelines in the search for new high temperature superconductors.

J. E. Hirsch

2009-01-26T23:59:59.000Z

227

The performance of Lagrangian perturbation schemes at high resolution  

E-Print Network [OSTI]

We present high--spatial resolution studies of the density field as predicted by Lagrangian perturbation approximations up to the third order. The first--order approximation is equivalent to the ``Zel'dovich approximation'' for the type of initial data analyzed. The study is performed for two simple models which allow studying of typical features of the clustering process in the early non--linear regime. We calculate the initial perturbation potentials as solutions of Poisson equations algebraically, and automate this calculation for a given initial random density field. The presented models may also be useful for other questions addressed to Lagrangian perturbation solutions and for the comparison of different approximation schemes. In an accompanying paper we investigate a detailed comparison with various N--body integrators using these models (Karakatsanis \\& Buchert 1995). Results of the present paper include the following: 1. The collapse is accelerated significantly by the higher--order corrections confirming previous results by Moutarde \\etal (1991); 2. the spatial structure of the density patterns predicted by the ``Zel'dovich approximation'' differs much from those predicted by the second-- and third--order Lagrangian approximations; 3. Second--order effects amount to internal substructures such as ``second generation'' --pancakes, --filaments and --clusters, as are also observed in N--body simulations; 4. The third--order effect gives rise to substructuring of the secondary mass--shells. The hierarchy of shell--crossing singularities that form features small high--density clumps at the intersections of caustics which we interprete as gravitational fragmentation.

Thomas Buchert; Georgios Karakatsanis; Robert Klaffl; Peter Schiller

1995-10-25T23:59:59.000Z

228

A coding theory foundation for the analysis of general unconditionally secure proof-of-retrievability schemes for cloud  

E-Print Network [OSTI]

archetypal schemes. In addition, we provide a new methodology for the analysis of keyed POR schemes will be "encoded" using a code such as a Reed-Solomon code. The code provides redundancy, enabling erasures

229

Robust and Scalable Scheme to Generate Large-Scale Entanglement Webs  

E-Print Network [OSTI]

We propose a robust and scalable scheme to generate an $N$-qubit $W$ state among separated quantum nodes (cavity-QED systems) by using linear optics and postselections. The present scheme inherits the robustness of the Barrett-Kok scheme [Phys. Rev. A {\\bf 71}, 060310(R) (2005)]. The scalability is also ensured in the sense that an arbitrarily large $N$-qubit $W$ state can be generated with a quasi-polynomial overhead $\\sim 2^{O[(\\log_2 N)^2]}$. The process to breed the $W$ states, which we introduce to achieve the scalability, is quite simple and efficient, and can be applied for other physical systems.

Keisuke Fujii; Haruki Maeda; Katsuji Yamamoto

2011-02-23T23:59:59.000Z

230

Simple scheme for implementing the Deutsch-Jozsa algorithm in thermal cavity  

E-Print Network [OSTI]

We present a simple scheme to implement the Deutsch-Jozsa algorithm based on two-atom interaction in a thermal cavity. The photon-number-dependent parts in the evolution operator are canceled with the strong resonant classical field added. As a result, our scheme is immune to thermal field, and does not require the cavity to remain in the vacuum state throughout the procedure. Besides, large detuning between the atoms and the cavity is not necessary neither, leading to potential speed up of quantum operation. Finally, we show by numerical simulation that the proposed scheme is equal to demonstrate the Deutsch-Jozsa algorithm with high fidelity.

Wen-Xing Yang; Zhe-Xuan Gong

2006-11-22T23:59:59.000Z

231

The Chamomile Scheme: An Optimized Algorithm for N-body simulations on Programmable Graphics Processing Units  

E-Print Network [OSTI]

We present an algorithm named "Chamomile Scheme". The scheme is fully optimized for calculating gravitational interactions on the latest programmable Graphics Processing Unit (GPU), NVIDIA GeForce8800GTX, which has (a) small but fast shared memories (16 K Bytes * 16) with no broadcasting mechanism and (b) floating point arithmetic hardware of 500 Gflop/s but only for single precision. Based on this scheme, we have developed a library for gravitational N-body simulations, "CUNBODY-1", whose measured performance reaches to 173 Gflop/s for 2048 particles and 256 Gflop/s for 131072 particles.

Tsuyoshi Hamada; Toshiaki Iitaka

2007-03-06T23:59:59.000Z

232

PROCEDURE FOR ADDRESSING CHEATING AND OTHER FORMS OF ACADEMIC MISCONDUCT INCORPORATING THE SCHEME AND TARIFF FOR DEALING WITH  

E-Print Network [OSTI]

THE SCHEME AND TARIFF FOR DEALING WITH CASES OF PLAGIARISM AND COLLUSION A INTRODUCTION 1. The University

233

A mass, energy, vorticity, and potential enstrophy conserving lateral fluidland boundary scheme for the shallow water equations  

E-Print Network [OSTI]

A mass, energy, vorticity, and potential enstrophy conserving lateral fluid­land boundary scheme conditions Conservation Energy Vorticity Potential enstrophy a b s t r a c t A numerical scheme for treating. Introduction The use of energy, enstrophy, and/or potential enstrophy conserving numerical schemes

Ketefian, Gerard

234

A Dynamic Localized Minimum-Energy Agent Tree-Based Data Dissemination Scheme for Wireless Sensor Networks  

E-Print Network [OSTI]

A Dynamic Localized Minimum-Energy Agent Tree-Based Data Dissemination Scheme for Wireless Sensor this prob- lem by proposing a minimum-energy tree-based data dissemination scheme, Dynamic Localized Minimum-Energy Agent Tree-Based Scheme (DLATS). We exploit the fact that sensor nodes are stationary and location

Holliday, JoAnne

235

P.E.Morthorst, Ris National Laboratory Support Schemes for Renewables, Berlin 19-21 January 2004  

E-Print Network [OSTI]

P.E.Morthorst, Risø National Laboratory Support Schemes for Renewables, Berlin 19-21 January 2004 Important Considerations for Developing a Support Scheme · Renewables are very different in kind ·Size for Renewables, Berlin 19-21 January 2004 #12;P.E.Morthorst, Risø National Laboratory Support Schemes

236

The impact of the European Union Emissions Trading Scheme on US aviation Robert Malina a,c  

E-Print Network [OSTI]

The impact of the European Union Emissions Trading Scheme on US aviation Robert Malina a, Germany Keywords: European air transport policy Carbon emissions trading US airline industry a b s t r a c in the European Union Emissions Trading Scheme from 2012 to 2020. We find that the Scheme would only have a small

237

Improving simulations of the upper ocean by inclusion of surface waves in the MellorYamada turbulence scheme  

E-Print Network [OSTI]

mixing. Surface waves can enhance turbulence kinetic energy and mixing of the upper ocean via wave interaction on the MellorYamada scheme and upper ocean thermal structure are examined and compared with each scheme. The behaviors of the MellorYamada scheme, as well as the simulated upper ocean thermal structure

Ezer,Tal

238

The Green Building Scheme for a Sustainable Eco-City in Taipei  

E-Print Network [OSTI]

Taipei City has put a significant effort toward the implementation of green design and green building schemes towards a sustainable eco-city. Although some of the environmental indicators have not indicated significant progress in environmental...

Sun, S.; Chen, Z.; Clements-Croome, D.

2006-01-01T23:59:59.000Z

239

Efficient authentication scheme for data aggregation in smart grid with fault tolerance and fault diagnosis  

E-Print Network [OSTI]

Authentication schemes relying on per-packet signature and per-signature verification introduce heavy cost for computation and communication. Due to its constraint resources, smart grid's authentication requirement cannot ...

Li, Depeng

240

Community wind power ownership schemes in Europe and their relevance to the United States  

E-Print Network [OSTI]

of Community Wind Power Ownership in Europe..46 4.3 Factorsof Community Wind Power Ownership in Europe More than halfCommunity Wind Power Ownership Schemes in Europe and their

Bolinger, Mark

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Economic impact of the European Union Emission Trading Scheme : evidence from the refining sector  

E-Print Network [OSTI]

I study the economic impact of the European Union Emission Trading Scheme (EU ETS) on the refining industry in Europe. I contrast previous ex-ante studies with the lessons from a series of interviews I conducted with ...

Lacombe, Romain H

2008-01-01T23:59:59.000Z

242

Transactions of NAMRI/SME 589 Volume 31, 2003 MODELING SCHEMES, TRANSIENCY, AND STRAIN MEASUREMENT  

E-Print Network [OSTI]

Transactions of NAMRI/SME 589 Volume 31, 2003 MODELING SCHEMES, TRANSIENCY, AND STRAIN MEASUREMENT the shock pressure and the particle velocities of the coating layer #12;Transactions of NAMRI/SME 590 Volume

Yao, Y. Lawrence

243

RF systems for the betatron-node scheme experiment at LBNL  

E-Print Network [OSTI]

FOR THE BETATRON-NODE SCHEME EXPERIMENT AT LBNL* S. Lidia,S. De Santis, LBNL, Berkeley, CA USA T. Houck, LLNL,frequency BBU is under way at LBNL. Central to this study

Lidia, Steven M.; De Santis, Stefano; Houck, Timothy

2001-01-01T23:59:59.000Z

244

A new landscape ecology mapping scheme for coastal environments: Galveston Island, Texas  

E-Print Network [OSTI]

of landscape ecology to understand the complete picture of the changing environment of a barrier island. Mapping is fundamental to detecting and monitoring change. Currently no mapping scheme can effectively integrate geomorphological and ecological mapping...

Lynch, Karen Marie

1996-01-01T23:59:59.000Z

245

E-Print Network 3.0 - alternative readout schemes Sample Search...  

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

Search Sample search results for: alternative readout schemes Page: << < 1 2 3 4 5 > >> 1 Nuclear Instruments and Methods in Physics Research A 505 (2003) 215218 A study of a...

246

A high carrier injection terahertz quantum cascade laser based on indirectly pumped scheme  

E-Print Network [OSTI]

A Terahertz quantum cascade laser with a rather high injection coupling strength based on an indirectly pumped scheme is designed and experimentally implemented. To effectively suppress leakage current, the chosen quantum ...

Razavipour, S. G.

247

E-Print Network 3.0 - advanced emms scheme Sample Search Results  

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

emms scheme Page: << < 1 2 3 4 5 > >> 1 Technical Report Documentation Page 1. Report No. Summary: of advanced features, the calculate function in QRS II and macro language in...

248

Reducing Memory and Traffic Requirements for Scalable Directory-Based Cache Coherence Schemes  

E-Print Network [OSTI]

As multiprocessors are scaled beyond single bus systems, there is renewed interest in directory-based cache coherence schemes. These schemes rely on a directory to keep track of all processors caching a memory block. When a write to that block occurs, pointto -point invalidation messages are sent to keep the caches coherent. A straightforward way of recording the identities of processors caching a memory block is to use a bit vector per memory block, with one bit per processor. Unfortunately, when the main memory grows linearly with the number of processors, the total size of the directory memory grows as the square of the number of processors, which is prohibitive for large machines. To remedy this problem several schemes that use a limited number of pointers per directory entry have been suggested. These schemes often cause excessive invalidation traffic. In this paper, we propose two simple techniques that significantly reduce invalidation traffic and directory memory requirements. ...

Anoop Gupta; Wolf-dietrich Weber; Todd Mowry

1990-01-01T23:59:59.000Z

249

Assessment and optimisation of renew-able support schemes in the European  

E-Print Network [OSTI]

Altener Optres: Assessment and optimisation of renew- able support schemes in the European University of Technology, Institute of Power systems and Energy Economics, Energy Economics Group, Austria ................................................................................. 8 2.3 Intermittency in production

250

Incentive schemes for Internet congestion management: Raffles versus time-of-day pricing  

E-Print Network [OSTI]

The Internet is plagued with congestion problems of growing severity which are worst at peak periods. In this paper, we compare two schemes that incentivize users to shift part of their usage from the peak-time to the ...

Loiseau, Patrick

251

GreenVis: Energy-Saving Color Schemes for Sequential Data Visualization on OLED Displays  

E-Print Network [OSTI]

North Virginia Tech Blacksburg, VA north@cs.vt.edu ABSTRACT The organic light emitting diode (OLED, Color Scheme, Visualization 1. INTRODUCTION The organic light-emitting diode (OLED) display is an emerg

252

Economic Analysis of the Health Champions Scheme in Hammersmith and Fulham  

E-Print Network [OSTI]

Economic Analysis of the Health Champions Scheme in Hammersmith and Fulham Commissioned by Turning of Economics and Political Science #12;2 1 INTRODUCTION AND STRUCTURE OF THE REPORT BUDGET AND THROUGHPUT FIGURES..................................................6 4 ECONOMIC VALUE

Fryzlewicz, Piotr

253

THESIS FOR THE DEGREE OF LICENTIATE OF PHILOSOPHY On Artin Schemes of Tiled Orders  

E-Print Network [OSTI]

THESIS FOR THE DEGREE OF LICENTIATE OF PHILOSOPHY On Artin Schemes of Tiled Orders ROGER BENGTSSON Salberger for all the time he has spent in the preparations of this licentiate thesis. He formulated

Patriksson, Michael

254

A Three-dimensional Fourth Order Central Scheme For Astrophysical MHD  

E-Print Network [OSTI]

A simple fourth order finite volume semi-discrete central scheme is introduced to study astrophysical magneto-hydrodynamics (MHD) problems. Density, momentum and energy are discretized as cell-centered volume averages. However, magnetic fields are discretized as face-centered area averages. The semi-discrete central scheme is combined with the constrained transport (CT) technique to enforce the divergence-free constraint on the magnetic field. The key feature of this scheme is dimensionally split centrally weighted essentially non-oscillatory (CWENO) reconstruction of magnetic field and electric flux at cell interfaces and cell edges respectively. Various 1D, 2D and 3D tests are performed to confirm fourth order accuracy, non-oscillatory and divergence-free property of the scheme.

Verma, Prabal Singh

2015-01-01T23:59:59.000Z

255

The EUs Emissions Trading Scheme: A Prototype Global System?  

E-Print Network [OSTI]

The European Union's Emission Trading Scheme (EU ETS) is the world's first multinational cap-and-trade system for greenhouse gases. As an agreement between sovereign nations with diverse historical, institutional, and ...

Ellerman, A. Denny

256

The EUs Emissions Trading Scheme: A Proto-Type Global System?  

E-Print Network [OSTI]

The European Union's Emission Trading Scheme (EU ETS) is the world's first multinational cap-and-trade system for greenhouse gases. As an agreement between sovereign nations with diverse historical, institutional, and ...

Ellerman, A. Denny

2008-01-01T23:59:59.000Z

257

Allocation and competitiveness in the EU emissions trading scheme: policy overview  

E-Print Network [OSTI]

The European emissions trading scheme (EU ETS) has an efficient and effective market design that risks being undermined by three interrelated problems: the approach to allocation; the absence of a credible commitment to post-2012 continuation...

Grubb, Michael; Neuhoff, Karsten

258

Controls modelling and verification for the Pacific Intertie HVDC 4 terminal scheme  

SciTech Connect (OSTI)

A detailed digital model for the actual control system of the Pacific Intertie HVDC scheme is presented. The scheme is operated as multi-terminal bipole HVDC with four terminals in parallel. Each pole comprises two separately located converter station with independent converter controls at each end of the transmission line. The control model includes bipole, pole, station and converter control systems. Special control techniques for providing safe and stable operation of the parallel converters are described. The techniques also result in fast recovery of the HVDC transmission scheme following severe ac and dc system disturbances. Verification of the completeness and accuracy of the model are made using field tests made on the actual HVDC scheme.

Hammad, A.; Minghetti, R.; Hasler, J.; Eicher, P. (ABB Power Systems, Baden (Switzerland)); Bunch, R.; Goldsworthy, D. (Bonneville Power Administration, Portland, OR (United States))

1993-01-01T23:59:59.000Z

259

The multiple-point schemes of a finite curvilinear map of ...  

E-Print Network [OSTI]

?1. Nr. In this settingin fact, in a more general settingwe prove the following statements, which show that Mr and Nr behave like reasonable schemes of...

1910-30-30T23:59:59.000Z

260

Simple scheme for encoding and decoding a qubit in unknown state for various topological codes  

E-Print Network [OSTI]

We present a scheme for encoding and decoding an unknown state for CSS codes, based on syndrome measurements. We illustrate our method by means of Kitaev toric code, defected-lattice code, topological subsystem code and Haah 3D code. The protocol is local whenever in a given code the crossings between the logical operators consist of next neighbour pairs, which holds for the above codes. For subsystem code we also present scheme in a noisy case, where we allow for bit and phase-flip errors on qubits as well as state preparation and syndrome measurement errors. Similar scheme can be built for two other codes. We show that the fidelity of the protected qubit in the noisy scenario in a large code size limit is of $1-\\mathcal{O}(p)$, where $p$ is a probability of error on a single qubit. Regarding Haah code we provide noiseless scheme, leaving the noisy case as an open problem.

Justyna ?odyga; Pawe? Mazurek; Andrzej Grudka; Micha? Horodecki

2014-11-29T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

LDPC code-based bandwidth efficient coding schemes for wireless communications  

E-Print Network [OSTI]

This dissertation deals with the design of bandwidth-efficient coding schemes with Low-Density Parity-Check (LDPC) for reliable wireless communications. Code design for wireless channels roughly falls into three categories: (1) when channel state...

Sankar, Hari

2009-06-02T23:59:59.000Z

262

Evaluation of the environmental viability of direct injection schemes for ocean carbon sequestration  

E-Print Network [OSTI]

This thesis evaluates the expected impact of several promising schemes for ocean carbon sequestration by direct injection of CO2, and serves as an update to the assessment by Auerbach et al. (1997) and Caulfield et al. ...

Israelsson, Peter H. (Peter Hampus), 1973-

2008-01-01T23:59:59.000Z

263

Fusion Engineering and Design 42 (1998) 555561 Scaling criteria for IFE liquid wall protection scheme simulation  

E-Print Network [OSTI]

scheme simulation Alice Ying *, Mohamed Abdou Mechanical and Aerospace Engineering Department, Uni6ersity Science S.A. All rights reserved. PII S0920-3796(98)00135-5 #12;A. Ying, M. Abdou / Fusion Engineering

Abdou, Mohamed

264

Modeling and analysis of EWMA control schemes with time varying control limits  

E-Print Network [OSTI]

of EWMA schemes that afford the desired degree of protection against shifts that lead to a potential increase in scrap. Next, a stochastic model of the EWMA control scheme with supplementary runs rules is constructed. Mean absorption time for various... be reworked constitute scrap. Depending upon the product that is being manufactured, observations falling above the USL or below the LSL will constitute scrap. Without loss of generality, let an observation falling beyond the USL constitute scrap. Clearly...

Chandrasekaran, Sreenivasan

1991-01-01T23:59:59.000Z

265

EXPLORING EFFICIENT CODING SCHEMES FOR STORING ARBITRARY TREE DATA STRUCTURES IN FLASH MEMORIES  

E-Print Network [OSTI]

fulfillment of the requirements for the designation as UNDERGRADUATE RESEARCH SCHOLAR A Senior Scholars Thesis by JUSTIN ALLEN FALCK EXPLORING EFFICIENT CODING SCHEMES FOR STORING ARBITRARY TREE DATA STRUCTURES IN FLASH MEMORIES Approved by... for the designation as UNDERGRADUATE RESEARCH SCHOLAR A Senior Scholars Thesis by JUSTIN ALLEN FALCK iii ABSTRACT Exploring Efficient Coding Schemes for Storing Arbitrary Tree Data Structures in Flash Memories. (April 2009) Justin Allen Falck...

Falck, Justin

2009-06-09T23:59:59.000Z

266

Development and evaluation of a convection scheme for use in climate models  

SciTech Connect (OSTI)

Cumulus convection is a key process in controlling the water vapor content of the atmosphere, which is in turn the largest feedback mechanism for climate change in global climate models. Yet scant attention has been paid to designing convective representations that attempt to handle water vapor with fidelity, and even less to evaluating their performance. Here the authors attempt to address this deficiency by designing a representation of cumulus convection with close attention paid to convective water fluxes and by subjecting the scheme to rigorous tests using sounding array data. The authors maintain that such tests, in which a single-column model is forced by large-scale processes measured by or inferred from the sounding data, must be carried out over a period at least as long as the radiative-subsidence timescale--about 30 days--governing the water vapor adjustment time. The authors also argue that the observed forcing must be preconditioned to guarantee integral enthalpy conservation, else errors in the single-column prediction may be falsely attributed to convective schemes. Optimization of the new scheme`s parameters is performed using one month of data from the intensive flux array operating during the Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment, with the aid of the adjoint of the linear tangent of the single-column model. Residual root-mean-square errors, after optimization, are about 15% in relative humidity and .8 K in temperature. It is difficult to reject the hypothesis that the residual errors are due to noise in the forcing. Evaluation of the convective scheme is performed using Global Atmospheric Research Program Atlantic Tropical Experiment data. The performance of the scheme is compared to that of a few other schemes used in current climate models. It is also shown that a vertical resolution better than 50 mb in pressure is necessary for accurate prediction of atmospheric water vapor.

Emanuel, K.A. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Program for Atmospheres, Oceans, and Climate] [Massachusetts Inst. of Tech., Cambridge, MA (United States). Program for Atmospheres, Oceans, and Climate; Zivkovic-Rothman, M. [Atmospheric and Environmental Research, Inc., Cambridge, MA (United States)] [Atmospheric and Environmental Research, Inc., Cambridge, MA (United States)

1999-06-01T23:59:59.000Z

267

Numerical schemes for dynamically orthogonal equations of stochastic fluid and ocean flows  

SciTech Connect (OSTI)

The quantification of uncertainties is critical when systems are nonlinear and have uncertain terms in their governing equations or are constrained by limited knowledge of initial and boundary conditions. Such situations are common in multiscale, intermittent and non-homogeneous fluid and ocean flows. The dynamically orthogonal (DO) field equations provide an adaptive methodology to predict the probability density functions of such flows. The present work derives efficient computational schemes for the DO methodology applied to unsteady stochastic Navier-Stokes and Boussinesq equations, and illustrates and studies the numerical aspects of these schemes. Semi-implicit projection methods are developed for the mean and for the DO modes, and time-marching schemes of first to fourth order are used for the stochastic coefficients. Conservative second-order finite-volumes are employed in physical space with new advection schemes based on total variation diminishing methods. Other results include: (i) the definition of pseudo-stochastic pressures to obtain a number of pressure equations that is linear in the subspace size instead of quadratic; (ii) symmetric advection schemes for the stochastic velocities; (iii) the use of generalized inversion to deal with singular subspace covariances or deterministic modes; and (iv) schemes to maintain orthonormal modes at the numerical level. To verify our implementation and study the properties of our schemes and their variations, a set of stochastic flow benchmarks are defined including asymmetric Dirac and symmetric lock-exchange flows, lid-driven cavity flows, and flows past objects in a confined channel. Different Reynolds number and Grashof number regimes are employed to illustrate robustness. Optimal convergence under both time and space refinements is shown as well as the convergence of the probability density functions with the number of stochastic realizations.

Ueckermann, M.P., E-mail: mpuecker@mit.edu [Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Mass. Avenue, Cambridge, MA 02139 (United States); Lermusiaux, P.F.J., E-mail: pierrel@mit.edu [Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Mass. Avenue, Cambridge, MA 02139 (United States)] [Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Mass. Avenue, Cambridge, MA 02139 (United States); Sapsis, T.P., E-mail: sapsis@mit.edu [Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Mass. Avenue, Cambridge, MA 02139 (United States)

2013-01-15T23:59:59.000Z

268

X-ray tests of a two-dimensional stigmatic imaging scheme with variable magnifications  

SciTech Connect (OSTI)

A two-dimensional stigmatic x-ray imaging scheme, consisting of two spherically bent crystals, one concave and one convex, was recently proposed [M. Bitter et al., Rev. Sci. Instrum. 83, 10E527 (2012)]. The Bragg angles and the radii of curvature of the two crystals of this imaging scheme are matched to eliminate the astigmatism and to satisfy the Bragg condition across both crystal surfaces for a given x-ray energy. In this paper, we consider more general configurations of this imaging scheme, which allow us to vary the magnification for a given pair of crystals and x-ray energy. The stigmatic imaging scheme has been validated for the first time by imaging x-rays generated by a micro-focus x-ray source with source size of 8.4 ?m validated by knife-edge measurements. Results are presented from imaging the tungsten L?1 emission at 8.3976 keV, using a convex Si-422 crystal and a concave Si-533 crystal with 2d-spacings of 2.21707 and 1.65635 and radii of curvature of 500 1 mm and 823 1 mm, respectively, showing a spatial resolution of 54.9 ?m. This imaging scheme is expected to be of interest for the two-dimensional imaging of laser produced plasmas.

Lu, J., E-mail: jlu@pppl.gov [Key Laboratory of Optoelectronic Technology and System of Ministry of Education, Chongqing University, Chongqing 400030 (China); Bitter, M.; Hill, K. W.; Delgado-Aparicio, L. F.; Efthimion, P. C.; Pablant, N. A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Beiersdorfer, P. [Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Caughey, T. A.; Brunner, J. [Inrad Optics, 181 Legrand Avenue, Northvale, New Jersey 07647 (United States)

2014-11-15T23:59:59.000Z

269

Evaluation of a Modified Scheme for Shallow Convection: Implementation of CuP and Case Studies  

SciTech Connect (OSTI)

A new treatment for shallow clouds has been introduced into the Weather Research and Forecasting (WRF) model. The new scheme, called the cumulus potential (CuP) scheme, replaces the ad-hoc trigger function used in the Kain-Fritsch cumulus parameterization with a trigger function related to the distribution of temperature and humidity in the convective boundary layer via probability density functions (PDFs). An additional modification to the default version of WRF is the computation of a cumulus cloud fraction based on the time scales relevant for shallow cumuli. Results from three case studies over the U.S. Department of Energys Atmospheric Radiation Measurement (ARM) site in north central Oklahoma are presented. These days were selected because of the presence of shallow cumuli over the ARM site. The modified version of WRF does a much better job predicting the cloud fraction and the downwelling shortwave irradiance thancontrol simulations utilizing the default Kain-Fritsch scheme. The modified scheme includes a number of additional free parameters, including the number and size of bins used to define the PDF, the minimum frequency of a bin within the PDF before that bin is considered for shallow clouds to form, and the critical cumulative frequency of bins required to trigger deep convection. A series of tests were undertaken to evaluate the sensitivity of the simulations to these parameters. Overall, the scheme was found to be relatively insensitive to each of the parameters.

Berg, Larry K.; Gustafson, William I.; Kassianov, Evgueni I.; Deng, Liping

2013-01-01T23:59:59.000Z

270

Linear optics schemes for entanglement distribution with realistic single-photon sources  

E-Print Network [OSTI]

We study the operation of linear optics schemes for entanglement distribution based on nonlocal photon subtraction when input states, produced by imperfect single-photon sources, exhibit both vacuum and multiphoton contributions. Two models for realistic photon statistics with radically different properties of the multiphoton "tail" are considered. The first model assumes occasional emission of double photons and linear attenuation, while the second one is motivated by heralded sources utilizing spontaneous parametric down-conversion. We find conditions for the photon statistics that guarantee generation of entanglement in the relevant qubit subspaces and compare it with classicality criteria. We also quantify the amount of entanglement that can be produced with imperfect single-photon sources, optimized over setup parameters, using as a measure entanglement of formation. Finally, we discuss verification of the generated entanglement by testing Bell's inequalities. The analysis is carried out for two schemes. The first one is the well-established one-photon scheme, which produces a photon in a delocalized superposition state between two nodes, each of them fed with one single photon at the input. As the second scheme, we introduce and analyze a linear-optics analog of the robust scheme based on interfering two Stokes photons emitted by atomic ensembles, which does not require phase stability between the nodes.

Miko?aj Lasota; Czes?aw Radzewicz; Konrad Banaszek; Rob Thew

2014-09-24T23:59:59.000Z

271

.Research Module: Scheme 2. N-Benzylation of N-H Pyrazolidinones 3. 3 6. 60 Scheme 2 Procedure: N-Alkylation Using Aldehyde  

E-Print Network [OSTI]

folder. It will actually produce two NMR printouts for you. The first one will be dominated by methanol Scheme 1, add 10 mL of anhydrous methanol. · For 4-methoxy compoud 3c, add 20 mL of methanol, since the 4-Benzylation Synthesis of N-Benzyl Pyrazolidinones NH NH O R1 3a-e + H O 4 Methanol Solvent 0.05 CF3CO2H (catalyst) N N O

Jasperse, Craig P.

272

Simultaneous Manipulation of Electric and Thermal Fields via Combination of Passive and Active Schemes  

E-Print Network [OSTI]

Increasing attention has been focused on the invisibility cloak due to its novel concept for manipulation of physical field. However, it is usually realized by single scheme (namely passive or active scheme) and limited in a single field. Here, we proposed a general method to achieve simultaneous manipulation of multi-physics field via combination of passive and active schemes. Experimentally, this method was demonstrated by simultaneous manipulation of electric field and thermal field. Firstly, a device was designed to simultaneously behave as electric and thermal invisibility cloak. Secondly, another device was demonstrated to simultaneously behave as electric invisibility cloak and thermal concentrator. The experimental results agree well with the simulated ones, thus confirming the feasibility of our method. Our method can also be extended to the other multi-physics fields, which would create much more freedom to design of new system and might enable new potential application in broad areas.

Lan, Chuwen; Zhou, Ji

2015-01-01T23:59:59.000Z

273

A kinetic scheme for unsteady pressurised flows in closed water pipes  

E-Print Network [OSTI]

he aim of this paper is to present a kinetic numerical scheme for the computations of transient pressurised flows in closed water pipes. Firstly, we detail the mathematical model written as a conservative hyperbolic partial differentiel system of equations, and the we recall how to obtain the corresponding kinetic formulation. Then we build the kinetic scheme ensuring an upwinding of the source term due to the topography performed in a close manner described by Perthame et al. using an energetic balance at microscopic level for the Shallow Water equations. The validation is lastly performed in the case of a water hammer in a uniform pipe: we compare the numerical results provided by an industrial code used at EDF-CIH (France), which solves the Allievi equation (the commonly used equation for pressurised flows in pipes) by the method of characteristics, with those of the kinetic scheme. It appears that they are in a very good agreement.

Bourdarias, Christian; Gerbi, Stphane

2008-01-01T23:59:59.000Z

274

Energy conserving schemes for the simulation of musical instrument contact dynamics  

E-Print Network [OSTI]

Collisions are an innate part of the function of many musical instruments. Due to the nonlinear nature of contact forces, special care has to be taken in the construction of numerical schemes for simulation and sound synthesis. Finite difference schemes and other time-stepping algorithms used for musical instrument modelling purposes are normally arrived at by discretising a Newtonian description of the system. However because impact forces are non-analytic functions of the phase space variables, algorithm stability can rarely be established this way. This paper presents a systematic approach to deriving energy conserving schemes for frictionless impact modelling. The proposed numerical formulations follow from discretising Hamilton's equations of motion, generally leading to an implicit system of nonlinear equations that can be solved with Newton's method. The approach is first outlined for point mass collisions and then extended to distributed settings, such as vibrating strings and beams colliding with rig...

Chatziioannou, Vasileios

2015-01-01T23:59:59.000Z

275

A stochastic multi-symplectic scheme for stochastic Maxwell equations with additive noise  

SciTech Connect (OSTI)

In this paper we investigate a stochastic multi-symplectic method for stochastic Maxwell equations with additive noise. Based on the stochastic version of variational principle, we find a way to obtain the stochastic multi-symplectic structure of three-dimensional (3-D) stochastic Maxwell equations with additive noise. We propose a stochastic multi-symplectic scheme and show that it preserves the stochastic multi-symplectic conservation law and the local and global stochastic energy dissipative properties, which the equations themselves possess. Numerical experiments are performed to verify the numerical behaviors of the stochastic multi-symplectic scheme.

Hong, Jialin, E-mail: hjl@lsec.cc.ac.cn [Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China); Ji, Lihai, E-mail: jilihai@lsec.cc.ac.cn [Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China); Zhang, Liying, E-mail: lyzhang@lsec.cc.ac.cn [Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)

2014-07-01T23:59:59.000Z

276

Sufficient conditions for uniform bounds in abstract polymer systems and explorative partition schemes  

E-Print Network [OSTI]

We present several new sufficient conditions for uniform boundedness of the reduced correlations and free energy of an abstract polymer system in a complex multidisc around zero fugacity. They resolve a discrepancy between two incomparable and previously known extensions of Dobrushin's classic condition. All conditions arise from an extension of the tree-operator approach introduced by Fern\\`{a}ndez & Procacci combined with a novel family of partition schemes of the spanning subgraph complex of a cluster. The key technique is the increased transfer of structural information from the partition scheme to a tree-operator on an enhanced space.

Christoph Temmel

2014-08-25T23:59:59.000Z

277

Security analysis of boolean algebra based on Zhang-Wang digital signature scheme  

SciTech Connect (OSTI)

In 2005, Zhang and Wang proposed an improvement signature scheme without using one-way hash function and message redundancy. In this paper, we show that this scheme exits potential safety concerns through the analysis of boolean algebra, such as bitwise exclusive-or, and point out that mapping is not one to one between assembly instructions and machine code actually by means of the analysis of the result of the assembly program segment, and which possibly causes safety problems unknown to the software.

Zheng, Jinbin, E-mail: jbzheng518@163.com [School of Mathematics and Computer Science, Long Yan University, Longyan 364012 (China)

2014-10-06T23:59:59.000Z

278

Coding Schemes for Physical Layer Network Coding Over a Two-Way Relay Channel  

E-Print Network [OSTI]

. : 21 4 E ective constellation at relay for di erent values of . : : : : : : : : 24 5 Achievable rates for the function f1. The extra rate constraint I(YR;X1f1;R; X 2 f1;RjX 1 f1;R X 2 f1;R) must be satis ed if nodes A and B use the proposed... MLC scheme. : : : : : : : : : : : : : : : : : : : : 36 6 ?Rf (hA; hB) vs. for each function f 2 F with the proposed coding scheme using CF decoding. : : : : : : : : : : : : : : : : : : : 37 7 I(YR; f(XA; XB)) vs. for each linear function f 2 FGF...

Hern, Brett Michael

2013-08-09T23:59:59.000Z

279

Design and performance evaluation of RAKE finger management schemes in the soft handover region  

E-Print Network [OSTI]

xii LIST OF FIGURES FIGURE Page 1 Average BER of BPSK versus the average SNR per path, ?, with MRC, GSC, and the proposed scheme for various values of L over i.i.d. Rayleigh fading channels when Lc = 3,La = 2, and ?T = 5 dB. . 20 2 Average BER of BPSK... versus the average SNR per path, ?, with MRC, GSC, and the proposed scheme for various values of La over i.i.d. Rayleigh fading channels when L = 4,Lc = 3, and ?T = 5 dB. . 22 3 Average BER of BPSK versus the average SNR per path, ?, with MRC, GSC...

Choi, Seyeong

2009-05-15T23:59:59.000Z

280

A robust coordinated control scheme for HVDC transmission with parallel AC systems  

SciTech Connect (OSTI)

This paper introduces a practical control philosophy for HVDC transmission in parallel operation to an AC system with particular emphasis on coordination of both transient and dynamic stability. Systematic development of the control scheme on the basis of on-line identification, optimal control and rule-based bang-optimal coordination principles is presented. Verification tests of the scheme on a physical HVDC/AC system simulator show that the simple control computer algorithm is practical and robust. The controller can successfully distinguish between different system fault severities and adapts its output signals to provide maximum synchronizing torque and ensure optimal damping of power oscillations.

To, K.W.V.; David, A.K. (Hong Kong Polytechnic (Hong Kong). Dept. of Electrical Engineering); Hammad, A.E. (N.E. Swiss Power Co., Baden (Switzerland))

1994-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

The smoothing transformer, a new concept in dc side harmonic reduction of HVdc schemes  

SciTech Connect (OSTI)

Direct connection schemes have been a subject of recent investigation, offering operational flexibility and substantial reductions in ac components. In these schemes the use of active dc filters has been suggested to replace the conventional tuned passive filter design. This paper presents the smoothing transformer as a new means for reducing dc harmonics at characteristic and non-characteristic frequencies using only passive components. A realistic smoothing transformer design is examined using the New Zealand HVdc system operating in the direct connection mode. The steady-state and transient performance of the smoothing transformer design is compared with that of the existing dc smoothing reactor and filter bank.

Enright, W.; Arrillaga, J.; Wood, A.R.; Hidalgo, F.P.

1996-10-01T23:59:59.000Z

282

Analysis of second harmonic instability for the Chateauguay HVDC/SVC scheme  

SciTech Connect (OSTI)

The Chateauguay HVDC back-to-back scheme with interconnections to the 765 kV transmission to U.S.A. and to Beauharnois generators can exhibit, under certain operating conditions, second harmonic resonance problems. This paper presents a thorough analysis of the problem using an eigenvalue and frequency domain approach. The analysis explains the mechanism of exciting the second harmonic instability by the presence of HVDC converters. The influence of changing the control parameters of the static VAR compensatory at the Chateauguay terminal is also studied. Finally, an assessment is made for the effectiveness of present countermeasure schemes, namely; the auxiliary dc stabilizing controls and the installation of second harmonic filters.

Hammad, A.E. (ABB Power Systems, 5401-Baden (CH))

1992-01-01T23:59:59.000Z

283

Temporal Loop Multiplexing: A resource efficient scheme for multiplexed photon-pair sources  

E-Print Network [OSTI]

Single photons are a vital resource for photonic quantum information processing. However, even state-of-the-art single photon sources based on photon-pair generation and heralding detection have only a low probability of delivering a single photon when one is requested. We analyse a scheme that uses a switched fibre delay loop to increase the delivery probability per time bin of single photons from heralded sources. We show that, for realistic experimental parameters, combining the output of up to 15 pulses can yield a performance improvement of a factor of 10. We consider the future performance of this scheme with likely component improvements.

Francis-Jones, Robert J A

2015-01-01T23:59:59.000Z

284

Putting a Price on Carbon Econometric Essays on the European Union Emissions Trading Scheme and its Impacts.  

E-Print Network [OSTI]

??Aatola, P. 2013. Putting a Price on Carbon Econometric Essays on the European Union Emissions Trading Scheme and its Impacts. ABSTRACT This dissertation examines the (more)

Aatola, Piia

2013-01-01T23:59:59.000Z

285

A Distributed MAC Scheme Supporting Voice Services in Mobile Ad Hoc Networks1  

E-Print Network [OSTI]

, University of Waterloo, Canada Email: hai.jiang@ece.ualberta.ca, wangping@ntu.edu.sg, poor results demonstrate the effectiveness of the proposed scheme. Index Terms ­ medium access control, code-time nature of voice traffic); and 4) adaptive to user mobility. In this paper, we propose an effective MAC

Zhuang, Weihua

286

A mixed finite-element scheme of a semiconductor energy-transport model  

E-Print Network [OSTI]

A mixed finite-element scheme of a semiconductor energy-transport model using dual entropy variables Stephan Gadau, Ansgar J¨ungel, and Paola Pietra Abstract. One-dimensional stationary energy employing a mixed-hybrid finite- element method which has the advantage to fulfill current conser- vation

Hanke-Bourgeois, Martin

287

AN ADAPTIVE MIXED SCHEME FOR ENERGY-TRANSPORT SIMULATIONS OF FIELD-EFFECT TRANSISTORS  

E-Print Network [OSTI]

AN ADAPTIVE MIXED SCHEME FOR ENERGY-TRANSPORT SIMULATIONS OF FIELD-EFFECT TRANSISTORS #3; STEFAN HOLST, ANSGAR J  UNGEL y AND PAOLA PIETRA z Abstract. Energy-transport models are used in semiconductor and energy of the electrons, coupled to the Poisson equation for the electrostatic potential. The movement

Pietra, Paola

288

On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking  

E-Print Network [OSTI]

A On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking DAVIDE of Padova Lossy temporal compression is key for energy constrained wireless sensor networks (WSN), where complexity and energy consumption. Specifically, we first carry out a performance evaluation of existing

Rossi, Michele

289

A faster numerical scheme for a coupled system to model soil erosion and suspended sediment transport  

E-Print Network [OSTI]

or the kinetic energy of raindrop exceeds the cohesive strength of the soil particles. Once detachedA faster numerical scheme for a coupled system to model soil erosion and suspended sediment´eans, France Abstract Overland flow and soil erosion play an essential role in water quality and soil

Paris-Sud XI, Université de

290

Parallelization of a relaxation scheme modelling the bedload transport of sediments in shallow  

E-Print Network [OSTI]

Parallelization of a relaxation scheme modelling the bedload transport of sediments in shallow the cohesive strength of the soil particles. Once detached, the sediments can be transported downstream as non-cohesive sediment before its deposition. BANG Project, INRIA-Paris-Rocquencourt & LAGA, Universiy Paris 13 Nord

Boyer, Edmond

291

EECS: An Energy Efficient Clustering Scheme in Wireless Sensor , Chengfa Li1  

E-Print Network [OSTI]

' limited power, innovative techniques that im- prove energy efficiency to prolong the network lifetime lifetime greatly with a chain topology. But the delay is signif- icant although the energy is savedEECS: An Energy Efficient Clustering Scheme in Wireless Sensor Networks Mao Ye1 , Chengfa Li1

Wu, Jie

292

High-order ENO schemes for unstructured meshes based on least-squares reconstruction  

SciTech Connect (OSTI)

High-order accurate schemes for conservation laws for unstructured meshes are not nearly so well advanced as such schemes for structured meshes. Consequently, little or nothing is known about the possible practical advantages of high-order discretization on unstructured meshes. This article is part of an ongoing effort to develop high-order schemes for unstructured meshes to the point where meaningful information can be obtained about the trade-offs involved in using spatial discretizations of higher than second-order accuracy on unstructured meshes. This article describes a high-order accurate ENO reconstruction scheme, called DD-L{sub 2}-ENO, for use with vertex-centered upwind flow solution algorithms on unstructured meshes. The solution of conservation equations in this context can be broken naturally into three phases: (1) solution reconstruction, in which a polynomial approximation of the solution is obtained in each control volume. (2) Flux integration around each control volume, using an appropriate flux function and a quadrature rule with accuracy commensurate with that of the reconstruction. (3) Time evolution, which may be implicit, explicit, multigrid, or some hybrid.

Ollivier-Gooch, C.F.

1997-03-01T23:59:59.000Z

293

Simulation of Hypersonic Shock Wave/Boundary Layer Interaction Using High Order WENO Scheme  

E-Print Network [OSTI]

Simulation of Hypersonic Shock Wave/Boundary Layer Interaction Using High Order WENO Scheme Yiqing for predicting hypersonic shock wave/boundary layer interaction. The implicit time marching method number of 1.09 ? 105 /ft. 1 Introduction Hypersonic aerothermodynamics is one of the most challenging

Zha, Gecheng

294

Hypersonic 3-D Blunt Body Equilibrium Air Flow Using High Order WENO Schemes II  

E-Print Network [OSTI]

Hypersonic 3-D Blunt Body Equilibrium Air Flow Using High Order WENO Schemes II Jaejin Lee , Manuel of Mach 12, 3D, hypersonic turbulent flows of air around blunt bodies with applied magnetic fields Hypersonic vehicles generate shocks that can heat the air sufficiently to partially ionize the air and create

Zha, Gecheng

295

A multidimensional gas-kinetic BGK scheme for hypersonic viscous flow  

E-Print Network [OSTI]

A multidimensional gas-kinetic BGK scheme for hypersonic viscous flow Kun Xu a,*, Meiliang Mao b for the Navier­Stokes equations in the study of hypersonic viscous flow. Firstly, we extend the gas. In the numerical parts, we concentrate on the computation of heat flux in laminar hypersonic viscous flows, where

Xu, Kun

296

Low Rem 3D MHD Hypersonic Equilibrium Flow Using High Order WENO Schemes  

E-Print Network [OSTI]

Low Rem 3D MHD Hypersonic Equilibrium Flow Using High Order WENO Schemes Jaejin Lee , Manuel A. Huerta , and Gecheng Zha University of Miami Coral Gables, Florida 33124 We present work on 3D hypersonic our work beyond the results presented in our previous paper, Lee, Huerta, and Zha.2 Hypersonic

Zha, Gecheng

297

CRBcast: A Collaborative Rateless Scheme for Reliable and Energy-Efficient Broadcasting in Wireless Sensor  

E-Print Network [OSTI]

the effectiveness of CRBcast. We show that CRBcast can provide both reliability and energy efficiency. Simulation results indicate that CRBcast saves at least 72%o and 60% energy in comparison with flooding and PBcastCRBcast: A Collaborative Rateless Scheme for Reliable and Energy-Efficient Broadcasting in Wireless

Rahnavard, Nazanin

298

The impact of electricity market schemes on predictability being a decision factor in the wind farm  

E-Print Network [OSTI]

The impact of electricity market schemes on predictability being a decision factor in the wind farm used criterion of capacity factor on the investment phase of a wind farm and on spatial planning, it is now recognized that accurate short-term forecasts of wind farms power output over the next few hours

Paris-Sud XI, Universit de

299

The impact of electricity market schemes on predictability being a decision factor in the wind farm  

E-Print Network [OSTI]

The impact of electricity market schemes on predictability being a decision factor in the wind farm of capacity factor on the investment phase of a wind farm and on spatial planning in an electricity market, it is now recognized that accurate short-term forecasts of wind farms power output over the next few hours

Paris-Sud XI, Universit de

300

A Communication-Based Appliance Scheduling Scheme for Consumer-Premise Energy Management Systems  

E-Print Network [OSTI]

of electricity prices and distributed wind power uncertainty. We model the evolution of the protocol as a two is an energy management controller that incorporates prices and user preferences to providA Communication-Based Appliance Scheduling Scheme for Consumer-Premise Energy Management Systems

Snyder, Larry

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

A Model-Based Impedance Control Scheme for High-Performance Hydraulic Joints  

E-Print Network [OSTI]

A Model-Based Impedance Control Scheme for High-Performance Hydraulic Joints Glen Bilodeau1, Greece Abstract Impedance control of a hydraulic servoactuator joint system is discussed in this paper individually. Due to nonlinear properties of hydraulic actuators, impedance control is difficult. The control

Papadopoulos, Evangelos

302

A wetting and drying scheme for POM Lie-Yauw Oey *  

E-Print Network [OSTI]

.e. hydraulic jumps and/or bores) can develop. A WAD scheme is proposed and applied to the Princeton Ocean Model that contain hydraulic jumps, including a laboratory dam-break problem. 2004 Published by Elsevier Ltd et al., 2003; Oey et al., 2003; Wang et al., 2003; Fan et al., 2004; Oey and Zhang, in press; Oey et

303

Self-Encryption Scheme for Data Security in Mobile Devices Yu Chen* and  

E-Print Network [OSTI]

battery drain. This paper proposes a novel data encryption and storage scheme to address this challenge space, and battery lifetime, a light-weight rather than computing intensive and complex encryption information on them, such as bank account information, corporate data, passwords, and more [28

Chen, Yu

304

Overland flow modelling with the Shallow Water Equation using a well balanced numerical scheme  

E-Print Network [OSTI]

or kinematic waves equations, and using either finite volume or finite difference method. We compare these four show that, for relatively simple configurations, kinematic waves equations solved with finite volume; finite differ- ences scheme; kinematic wave equations; shallow water equations; comparison of numerical

Paris-Sud XI, Université de

305

Field-reversed configuration formation scheme utilizing a spheromak and solenoid induction  

E-Print Network [OSTI]

Field-reversed configuration formation scheme utilizing a spheromak and solenoid induction S. P FRC formation technique is described, where a spheromak transitions to a FRC with inductive current are suppressed; spheromaks with a lighter majority species, such as neon and helium, either display a terminal

Ji, Hantao

306

Co-ordination of Renewable Energy Support Schemes in the Stine Grenaa Jensen1  

E-Print Network [OSTI]

Co-ordination of Renewable Energy Support Schemes in the EU Stine Grenaa Jensen1 and Poul Erik for renewable energy are regionalised. Two theoretical examples are used to explain interactive effects on, e on the effectiveness in power systems including both thermal and renewable power production. In the traditional

307

DOWNSTREAM VDSL CHANNEL TRACKING USING LIMITED FEEDBACK FOR CROSSTALK PRECOMPENSATED SCHEMES  

E-Print Network [OSTI]

DOWNSTREAM VDSL CHANNEL TRACKING USING LIMITED FEEDBACK FOR CROSSTALK PRECOMPENSATED SCHEMES J, crosstalk becomes the main impairment in VDSL systems. For downstream communication, crosstalk precompensa or downstream bit rate needs to be used to help the estimation. In this paper, we design a new algorithm to try

van der Veen, Alle-Jan

308

Acceptance test procedure for removal of CS1K circuit switcher block and trip schemes  

SciTech Connect (OSTI)

This supporting document provides a detailed process to test the functions of the circuit switcher, protective relays, alarms, SCADA and 125VDC control logic of 115kV and 13.8kV systems at B3S4 substation following the removal of trip and blocking schemes to Transformer No.1 Circuit Switcher B594.

HACHE, J.M.

1999-08-25T23:59:59.000Z

309

An Energy-Efficient Communication Scheme in Wireless Cable Sensor Networks  

E-Print Network [OSTI]

An Energy-Efficient Communication Scheme in Wireless Cable Sensor Networks Xiao Chen Department of Computer Science U. S. Naval Postgraduate School Monterey, CA 93943 ncrowe@nps.edu Abstract and communication. Like wireless sensor networks with point sensors, energy-efficient communication is still

Rowe, Neil C.

310

Hybrid intelligent control scheme for air heating system using fuzzy logic and genetic algorithm  

SciTech Connect (OSTI)

Fuzzy logic provides a means for converting a linguistic control strategy, based on expert knowledge, into an automatic control strategy. Its performance depends on membership function and rule sets. In the traditional Fuzzy Logic Control (FLC) approach, the optimal membership is formed by trial-and-error method. In this paper, Genetic Algorithm (GA) is applied to generate the optimal membership function of FLC. The membership function thus obtained is utilized in the design of the Hybrid Intelligent Control (HIC) scheme. The investigation is carried out for an Air Heat System (AHS), an important component of drying process. The knowledge of the optimum PID controller designed, is used to develop the traditional FLC scheme. The computational difficulties in finding optimal membership function of traditional FLC is alleviated using GA In the design of HIC scheme. The qualitative performance indices are evaluated for the three control strategies, namely, PID, FLC and HIC. The comparison reveals that the HIC scheme designed based on the hybridization of FLC with GA performs better. Moreover, GA is found to be an effective tool for designing the FLC, eliminating the human interface required to generate the membership functions.

Thyagarajan, T.; Shanmugam, J.; Ponnavaikko, M.; Panda, R.C.

2000-01-01T23:59:59.000Z

311

A New Achievability Scheme for the Relay Channel Wei Kang Sennur Ulukus  

E-Print Network [OSTI]

into a codeword conditioned on the codeword of the previ- ous block. The receiver performs joint decoding after and the relay to create any kind of joint distribution for the channel inputs in the next block. The shortcoming scheme is in the form of a block Markov code. The transmitter uses a superpo- sition Markov code

Ulukus, Sennur

312

A kinetic scheme for pressurised flows in non uniform closed water pipes  

E-Print Network [OSTI]

A kinetic scheme for pressurised flows in non uniform closed water pipes C. Bourdarias1 , M. Ersoy1- tions of transient pressurised flows in closed water pipe with non uniform sections. Firstly, we detail is lastly performed in the case of a water hammer in an uniform pipe: we compare the numerical results

Paris-Sud XI, Université de

313

China's waste could be treasure for Kyoto scheme 01 Mar 2006 12:36:11 GMT  

E-Print Network [OSTI]

China's waste could be treasure for Kyoto scheme 01 Mar 2006 12:36:11 GMT Source: Reuters By Stuart Penson COPENHAGEN, March 1 (Reuters) - Hundreds of rubbish landfill sites across China have vast, said Lu Guoqiang, an official at China's state Environmental Protection Administration. "China has 700

Columbia University

314

Influence of hole shape on the performance of a turbine vane endwall film-cooling scheme  

E-Print Network [OSTI]

Rising combustor exit temperatures in gas turbine engines necessitate active cooling for the downstream industrial gas turbine engines. One means of achieving this goal is to increase the combustion temper- ature are so high in today's gas turbine engines that in the absence of complex cooling schemes the turbine

Thole, Karen A.

315

A New MAC Scheme Supporting Voice/Data Traffic in Wireless Ad Hoc Networks  

E-Print Network [OSTI]

A New MAC Scheme Supporting Voice/Data Traffic in Wireless Ad Hoc Networks Ping Wang, Member, IEEE, Hai Jiang, Member, IEEE, and Weihua Zhuang, Fellow, IEEE Abstract--In wireless ad hoc networks information exchanges among the nodes. Index Terms--Wireless ad hoc networks, medium access control, fairness

Jiang, Hai

316

A REFERENCE PICTURE SELECTION SCHEME FOR VIDEO TRANSMISSION OVER AD-HOC NETWORKS  

E-Print Network [OSTI]

A REFERENCE PICTURE SELECTION SCHEME FOR VIDEO TRANSMISSION OVER AD-HOC NETWORKS USING MULTIPLE, Polytechnic University 6 Metrotech, Brooklyn, NY, 11201, USA ABSTRACT Enabling video transmission over ad-hoc networks is more challenging than over conventional mobile networks because a connection path in an ad-hoc

Panwar, Shivendra S.

317

A BOUNDARY LAYER PROBLEM FOR AN ASYMPTOTIC PRESERVING SCHEME IN THE QUASI-NEUTRAL LIMIT FOR  

E-Print Network [OSTI]

, see [31]. The second application is related to electric arc phenomena on satellite solar panels, see as the asymptotic pre- serving scheme developed in [9] are unstable for general Roe type solvers when the mesh does, the quasi-neutral model is not valid in non quasi-neutral zones and, we have to use different models

Vignal, Marie-Hélène

318

Load-Balanced Routing Scheme for Energy-Efficient Wireless Sensor Networks  

E-Print Network [OSTI]

Load-Balanced Routing Scheme for Energy-Efficient Wireless Sensor Networks Fatma Bouabdallah, Nizar. In this paper, we investigate the potential energy conservation achieved by balancing the traffic throughout, load balancing, performance analysis. I. INTRODUCTION In order to minimize the energy consumption

Boutaba, Raouf

319

Accelerator and new accelerating schemes B. Heusch (1) and G. Matthieussent (2)  

E-Print Network [OSTI]

1420 Accelerator and new accelerating schemes B. Heusch (1) and G. Matthieussent (2) (1) Centre de and high energy physics, astrophysics and plasma physics had the opportunity to discuss accelerators under con- struction as well as the novel acceleration techniques which have appeared during the past few

Paris-Sud XI, Université de

320

FLUID DYNAMIC ASPECTS OF THE POROUS WETTED WALL PROTECTION SCHEME FOR IFE REACTORS  

E-Print Network [OSTI]

FLUID DYNAMIC ASPECTS OF THE POROUS WETTED WALL PROTECTION SCHEME FOR IFE REACTORS S. Shin, F of Mechanical Engineering Georgia Institute of Technology Atlanta, GA 30332-0405 USA Number of Pages: 18 Number. Abdel-Khalik School of Mechanical Engineering Georgia Institute of Technology 771 Ferst Drive Atlanta

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Priority Setting for Government Investment in Forestry Conservation Schemes-An Example from New Zealand1  

E-Print Network [OSTI]

's international reputation for its technically advanced approaches to conservation and protection of soilPriority Setting for Government Investment in Forestry Conservation Schemes-An Example from New Zealand1 Colin L. 0'Loughlin2 Abstract: In New Zealand responsibilityfor funding flood protection

Standiford, Richard B.

322

Approximate Waveforms for Extreme-Mass-Ratio Inspirals: The Chimera Scheme  

E-Print Network [OSTI]

We describe a new kludge scheme to model the dynamics of generic extreme-mass-ratio inspirals (EMRIs; stellar compact objects spiraling into a spinning supermassive black hole) and their gravitational-wave emission. The Chimera scheme is a hybrid method that combines tools from different approximation techniques in General Relativity: (i) A multipolar, post-Minkowskian expansion for the far-zone metric perturbation (the gravitational waveforms) and for the local prescription of the self-force; (ii) a post-Newtonian expansion for the computation of the multipole moments in terms of the trajectories; and (iii) a BH perturbation theory expansion when treating the trajectories as a sequence of self-adjusting Kerr geodesics. The EMRI trajectory is made out of Kerr geodesic fragments joined via the method of osculating elements as dictated by the multipolar post-Minkowskian radiation-reaction prescription. We implemented the proper coordinate mapping between Boyer-Lindquist coordinates, associated with the Kerr geodesics, and harmonic coordinates, associated with the multipolar post-Minkowskian decomposition. The Chimera scheme is thus a combination of approximations that can be used to model generic inspirals of systems with extreme to intermediate mass ratios, and hence, it can provide valuable information for future space-based gravitational-wave observatories, like LISA, and even for advanced ground detectors. The local character in time of our multipolar post-Minkowskian self-force makes this scheme amenable to study the possible appearance of transient resonances in generic inspirals.

Carlos F. Sopuerta; Nicolas Yunes

2012-01-27T23:59:59.000Z

323

Towards Reliable Scheduling Schemes for Long-lived Replaceable Sensor Networks  

E-Print Network [OSTI]

, including energy conservation [1], ambient energy harvesting [2]­[6], incremental deployment, and node reclamation and replacement [7], [8]. Energy conservation schemes can slow down energy con- sumption and thus. For example, the amount of energy that a solar cell can harvest is proportional to its surface area

Wang, Guiling

324

A chosen text attack on the RSA cryptosystem and some discrete logarithm schemes  

E-Print Network [OSTI]

A chosen text attack on the RSA cryptosystem and some discrete logarithm schemes Y. Desmedt. Odlyzko AT&T Bell Laboratories Murray Hill, NJ 07974, USA ABSTRACT A new attack on the RSA cryptosystem is presented. This attack assumes less than previous chosen ciphertext attacks, since the cryptanalyst has

Odlyzko, Andrew M.

325

Community Training: Partitioning Schemes in Good Shape for Federated Data Grids  

E-Print Network [OSTI]

Community Training: Partitioning Schemes in Good Shape for Federated Data Grids Tobias Scholl.lastname @in.tum.de Abstract In federated Data Grids, individual institutions share their data sets within improves data access within federated Data Grids and can be combined with well-established Grid methods

Kemper, Alfons

326

Density functional theory and Kohn-Sham scheme for self-bound systems  

E-Print Network [OSTI]

We demonstrate how the separation of the total energy of a self-bound system into a functional of the internal one-body Fermionic density and a function of an arbitrary wave vector describing the center-of-mass kinetic energy can be used to set-up an "internal" Kohn-Sham scheme.

J. Messud; M. Bender; E. Suraud

2009-11-10T23:59:59.000Z

327

Tutorial Eight 1. Explain the addressing scheme used in Mobile IP?  

E-Print Network [OSTI]

COMP 347 Tutorial Eight Mobile IP 1. Explain the addressing scheme used in Mobile IP? 2. One simple method to implement mobility is to let the mobile host change its address as it goes to the new network with this approach? 3. What role does a mobile host, a home agent and a foreign agent play in mobile IP protocol? 4

Hamey, Len

328

PMI-based MIMO OFDM PHY Integrated Key Exchange (P-MOPI) Scheme  

E-Print Network [OSTI]

In the literature, J.-P. Cheng et al. have proposed the MIMO-OFDM PHY integrated (MOPI) scheme for achieving physical-layer security in practice without using any cryptographic ciphers. The MOPI scheme uses channel sounding and physical-layer network coding (PNC) to prevent eavesdroppers from learning the channel state information (CSI). Nevertheless, due to the use of multiple antennas for PNC at transmitter and beamforming at receiver, it is not possible to have spatial multiplexing nor use space-time codes in our previous MOPI scheme. In this paper, we propose a variant of the MOPI scheme, called P-MOPI, that works with a cryptographic cipher and utilizes precoding matrix index (PMI) as an efficient key-exchange mechanism. With channel sounding, the PMI is only known between the transmitter and the legal receiver. The shared key can then be used, e.g., as the seed to generate pseudo random bit sequences for securing subsequent transmissions using a stream cipher. By applying the same techniques at independ...

Lan, Pang-Chang; Lee, Chia-Han; Yeh, Ping-Cheng; Cheng, Chen-Mou

2011-01-01T23:59:59.000Z

329

SYNTAX-DIRECTED TRANSLATION SCHEMES FOR MULTI -AGENT SYSTEMS CONVERSATION MODELLING  

E-Print Network [OSTI]

SYNTAX-DIRECTED TRANSLATION SCHEMES FOR MULTI - AGENT SYSTEMS CONVERSATION MODELLING Ana Fred-intensive business processes based on formal conversations, i.e. partially ordered sets of communicative acts representation of agent conversations. In this paper we present a formal method for conversation representation

Fred, Ana

330

An Energy-Efficient Broadcasting Scheme for Unsynchronized Wireless Sensor MAC Protocols  

E-Print Network [OSTI]

An Energy-Efficient Broadcasting Scheme for Unsynchronized Wireless Sensor MAC Protocols Philipp, Switzerland Abstract--In the past couple of years, many Energy-Efficient Medium Access Control (E2 -MAC of energy-efficiency in case of unicast point-to-point transmissions, they yet lack an efficient solution

Braun, Torsten

331

A mixed finite element discretization scheme for a concrete carbonation model with concentration-dependent porosity  

E-Print Network [OSTI]

A mixed finite element discretization scheme for a concrete carbonation model with concentration/unsaturated porous media. The special features of our problem are twofold: the reaction produces water and therefore for the case of concrete carbonation ­ one of the most important physico-chemical processes affecting

Suciu, Nicolae

332

Utility of Joint Processing Schemes Annika Klockar, Carmen Botella, Tommy Svensson, Anna Brunstrom, Mikael Sternad  

E-Print Network [OSTI]

Utility of Joint Processing Schemes Annika Klockar, Carmen Botella, Tommy Svensson, Anna Brunstrom and increase data rates, in particular at the cell edges. In this paper, we evaluate the utility of Internet applications in a joint processing enabled cluster of base stations. Utility is used to quantify system

333

Robust Smart Card based Password Authentication Scheme against Smart Card Security Breach  

E-Print Network [OSTI]

Robust Smart Card based Password Authentication Scheme against Smart Card Security Breach Ding Wang University, Beijing 100871, China 3 Automobile Management Institute of PLA, Bengbu City 233011, China wangdingg@mail.nankai.edu.cn Abstract. As the most prevailing two-factor authentication mechanism, smart

334

EAGR: Energy Aware Greedy Routing Scheme for Wireless Ad hoc Networks Sachin Sharma  

E-Print Network [OSTI]

EAGR: Energy Aware Greedy Routing Scheme for Wireless Ad hoc Networks Sachin Sharma Tejas Networks Delhi, New Delhi, India (email: dharmar@maths.iitd.ac.in) Abstract This paper presents Energy Aware distributed nodes that communicate over a wireless link. In this paper we present a scalable, Energy Aware

Dharmaraja, S.

335

Parallel Interleaver Architecture with New Scheduling Scheme for High Throughput Configurable Turbo Decoder  

E-Print Network [OSTI]

Parallel Interleaver Architecture with New Scheduling Scheme for High Throughput Configurable Turbo}@rice.edu, yuanbinguo@huawei.com Abstract--Parallel architecture is required for high throughput turbo decoder to meet also shows great flexibility and scalability compared to prior work. Index Terms--VLSI, turbo decoder

Mellor-Crummey, John

336

A Cheat-Proof Game Theoretic Demand Response Scheme for Smart Grids  

E-Print Network [OSTI]

A Cheat-Proof Game Theoretic Demand Response Scheme for Smart Grids Yan Chen, W. Sabrina Lin, Feng}@umd.edu Abstract--While demand response has achieved promising results on making the power grid more efficient and reliable, the additional dynamics and flexibility brought by demand response also increase the uncertainty

Liu, K. J. Ray

337

Efficient generation of extended plasma waveguides with the axicon ignitor-heater scheme  

E-Print Network [OSTI]

. The plasma col- umn was produced by using an axicon to focus a long laser pulse into a line focusEfficient generation of extended plasma waveguides with the axicon ignitor-heater scheme Y.-F. Xiao for generating extended plasma waveguides is developed by using the axicon lens in conjunction with the ignitor

338

A ROBUST WELL-BALANCED SCHEME FOR MULTI-LAYER SHALLOW WATER EQUATIONS  

E-Print Network [OSTI]

the overall property of being conservative in the total momentum. It is based on a source-centered hydro of the layers with respect to horizontal scales, small viscosity, hydrostatics, small slope for the topography-centered hydro- static reconstruction scheme for the one-layer system, a variant of the hydrostatic

339

Coupling schemes for modeling hydraulic fracture propagation using the XFEM Elizaveta Gordeliy, Anthony Peirce  

E-Print Network [OSTI]

Coupling schemes for modeling hydraulic fracture propagation using the XFEM Elizaveta Gordeliy August 2012 Accepted 18 August 2012 Available online 15 September 2012 Keywords: XFEM Hydraulic fractures and the Dirichlet to Neumann (DN) map with Oðh? accuracy. For hydraulic fracture problems with a lag separating

Peirce, Anthony

340

Implicit level set schemes for modeling hydraulic fractures using the Elizaveta Gordeliy, Anthony Peirce  

E-Print Network [OSTI]

Implicit level set schemes for modeling hydraulic fractures using the XFEM Elizaveta Gordeliy Copyright ? 2013 Published by Elsevier B.V. All rights reserved. 1. Introduction Hydraulic fractures (HF form 13 July 2013 Accepted 27 July 2013 Available online 20 August 2013 Keywords: XFEM Hydraulic

Peirce, Anthony

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community  

E-Print Network [OSTI]

and supersaturation in CAM. The new model is able to reproduce field observations of ice mass and mixed phase cloud are sensitive to the parameterization of ice clouds. These results indicate that ice clouds are potentiallyGlobal simulations of ice nucleation and ice supersaturation with an improved cloud scheme

Gettelman, Andrew

342

A PHYSICALLY-BASED SCHEME FOR THE URBAN ENERGY BUDGET IN ATMOSPHERIC MODELS  

E-Print Network [OSTI]

A PHYSICALLY-BASED SCHEME FOR THE URBAN ENERGY BUDGET IN ATMOSPHERIC MODELS VALRY MASSON Centre published data. Firstly, it is shown that the evolution of the model-predicted fluxes during a night. These two validations show that the radiative energy input to the urban surface model is realistic

Ribes, Aurlien

343

DEVELOPMENT OF CFL-FREE, EXPLICIT SCHEMES FOR MULTIDIMENSIONAL ADVECTION-REACTION EQUATIONS  

E-Print Network [OSTI]

hyperbolic equations. The derived schemes generate accurate numerical solutions even if large time steps their stability. But they require inverting a coe?cient matrix at each time step in order to generate numerical and spatial errors add up. Thus, the resulting solutions are very sensitive to the time step size. In recent

South Carolina, University of

344

TAME-BLIND EXTENSION OF MORPHISMS OF TRUNCATED BARSOTTI-TATE GROUP SCHEMES  

E-Print Network [OSTI]

TAME-BLIND EXTENSION OF MORPHISMS OF TRUNCATED BARSOTTI-TATE GROUP SCHEMES YUICHIRO HOSHI OCTOBER with perfect residue fields extend in a "tame-blind" fashion -- i.e., under a condition which is unaffected. The "tame-blindness" of our extension result al- lows one to verify the analogue of a result of Tate

345

Semi-blind channel estimation schemes based on a cooperative form of the cross relation criterion  

E-Print Network [OSTI]

Semi-blind channel estimation schemes based on a cooperative form of the cross relation criterion on the cross-relation criterion that has been extensively studied in the (semi-) blind literature. As shown. In a wireless environment, as in cooperative communications, semi-blind techniques which combine a blind

Rontogiannis, Athanasios A.

346

An Advanced Computational Scheme for the Optimization of 2D Radial Reflectors in Pressurized Water Reactors  

E-Print Network [OSTI]

This paper presents a computational scheme for the determination of equivalent 2D multi-group heterogeneous reflectors in a Pressurized Water Reactor (PWR). The proposed strategy is to define a full-core calculation consistent with a reference lattice code calculation such as the Method Of Characteristics (MOC) as implemented in APOLLO2 lattice code. The computational scheme presented here relies on the data assimilation module known as "Assimilation de donn\\'{e}es et Aide \\`{a} l'Optimisation (ADAO)" of the SALOME platform developed at \\'{E}lectricit\\'{e} De France (EDF), coupled with the full-core code COCAGNE and with the lattice code APOLLO2. A first validation of the computational scheme is made using the OPTEX reflector model developed at \\'{E}cole Polytechnique de Montr\\'{e}al (EPM). As a result, we obtain 2D multi-group, spatially heterogeneous 2D reflectors, using both diffusion or $\\text{SP}_{\\text{N}}$ operators. We observe important improvements of the power discrepancies distribution over the core when using reflectors computed with the proposed computational scheme, and the $\\text{SP}_{\\text{N}}$ operator enables additional improvements.

Thomas Clerc; Alain Hbert; Hadrien Leroyer; Jean-Philippe Argaud; Bertrand Bouriquet; Aglique Ponot

2014-05-12T23:59:59.000Z

347

Robust Networked Control Scheme for Distributed Secondary Control of Islanded MicroGrids  

E-Print Network [OSTI]

1 Robust Networked Control Scheme for Distributed Secondary Control of Islanded MicroGrids Qobad scenarios that have an increased number of distributed generators (DGs) within the MG. Due (RES) and distributed generators (DGs), microgrids (MGs) have recently attracted a significant interest

Vasquez, Juan Carlos

348

A Genetic Algorithm Based Cell Switch-off Scheme for Energy Saving in Dense Cell Deployments  

E-Print Network [OSTI]

in global energy consumption, energy consumption has also become a major component of operating expenditures for upwards of 40% of a BS's total energy consumption [2]. The energy consumption break-down at a typical 3GA Genetic Algorithm Based Cell Switch-off Scheme for Energy Saving in Dense Cell Deployments Furkan

Yanikomeroglu, Halim

349

Energy Efficient Scheme for Cognitive Radios Utilizing Soft AbdulRahman Alabbasi , Zouheir Rezki , Basem Shihada  

E-Print Network [OSTI]

Energy Efficient Scheme for Cognitive Radios Utilizing Soft Sensing AbdulRahman Alabbasi , Zouheir: {abdulrahman.alabbasi, zouheir.rezki, basem.shihada}@kaust.edu.sa Abstract--In this paper we propose an energy sensing information to achieve a sub-optimum energy efficient system. The sub-optimality is achieved

Shihada, Basem

350

A New Storage Scheme for Approximate Location Queries in Object Tracking Sensor Networks  

E-Print Network [OSTI]

for energy efficiency. We develop an Energy-conserving Approximate StoragE (EASE) scheme to efficiently the network lifetime by a factor of 2-5. Index Terms: Energy efficiency, data dissemination, data storage.g., in a hard-to-reach area). Thus, energy efficiency is a critical consideration in the design of large- scale

Lee, Dongwon

351

A Multi-solver Scheme for Viscous Flows Using Adaptive Cartesian Grids and Meshless Grid  

E-Print Network [OSTI]

A Multi-solver Scheme for Viscous Flows Using Adaptive Cartesian Grids and Meshless Grid of an adaptive multi-solver approach for CFD sim- ulation of viscous flows. Curvilinear grids are used near solid bodies to capture boundary layers, and stuctured adaptive Cartesian grids are used away from the body

Jameson, Antony

352

Augmentation of Rural Piped Water Schemes for Supply of drinking water to tanker fed villages.  

E-Print Network [OSTI]

Augmentation of Rural Piped Water Schemes for Supply of drinking water to tanker fed villages-3000mm and biggest reservoirs like Tansa, Vaitarana and Bhatsa for supplying drinking water to Mumbai city. Many solutions have been explored in the past to provide drinking water security to people

Sohoni, Milind

353

Some approximate Godunov schemes to compute shallow-water equations with topography  

E-Print Network [OSTI]

Some approximate Godunov schemes to compute shallow-water equations with topography Thierry the computation of shallow-water equations with topography by Finite Volume methods, in a one method. Some test cases are presented: convergence towards steady states in subcritical and supercritical

Herard, Jean-Marc

354

Comparative Study of Frequency Agile Data Transmission Schemes for Cognitive Radio Transceivers  

E-Print Network [OSTI]

agile data transmission schemes employed by cognitive radio transceivers for use in dynamic spectrum for this apparent spectrum scarcity. Although, measurement studies have shown that licensed spectrum is relatively- This work was supported by NSF grants ANI-0230786 and ANI- 0335272. licensed users "borrowing" spectrum from

Kansas, University of

355

Cotton Production under Traditional and Regulated Deficit Irrigation Schemes in Southwest Texas  

E-Print Network [OSTI]

phenological/physiological responses in Southwest Texas. The results showed that: 1) The threshold deficit ratio for a traditional deficit irrigation scheme falls between 0.7 and 0.8 for cotton production in Southwest Texas under a low energy precision...

Wen, Yujin

2012-10-19T23:59:59.000Z

356

An Almost Global Tracking Control Scheme for Maneuverable Autonomous Vehicles and its  

E-Print Network [OSTI]

. While applications of this control scheme include autonomous aerial and underwater vehicles, we focus on an autonomous underwater vehicle (AUV) application because of its richer, more nonlinearly coupled, dynamics of unmanned vehicles are expanding as these vehicles become more maneuverable with the passage of time. Recent

Chyba, Monique

357

A PARALLEL ADAPTIVE 3D MHD SCHEME FOR MODELING CORONAL AND SOLAR WIND PLASMA FLOWS  

E-Print Network [OSTI]

A PARALLEL ADAPTIVE 3D MHD SCHEME FOR MODELING CORONAL AND SOLAR WIND PLASMA FLOWS C. P. T. GROTH, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109­2143, USA K. G. POWELL Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109­2118, USA Abstract. A parallel adaptive

De Zeeuw, Darren L.

358

Some comments on rigorous quantum field path integrals in the analytical regularization scheme  

E-Print Network [OSTI]

Trough the systematic use of the Minlos theorem on thesupport of cylindrical measures on R infinity, we produce several mathematically rigorous path integrals in interacting euclidean quantum fields with Gaussian free measures defined by generalizeds powers ofthe laplacean operator and useful in Loop space approach for Astekar-Sen scheme for quantizing gravity

Botelho, Luiz C L

2009-01-01T23:59:59.000Z

359

A Control Strategy Scheme for Fuel Cell-Vehicle Based on Frequency Hamza Alloui  

E-Print Network [OSTI]

A Control Strategy Scheme for Fuel Cell-Vehicle Based on Frequency Separation Hamza Alloui based on frequency-separation for Fuel cell-Battery Hybrid Electric Vehicle (HEV), using a Fuel cell (FC of this strategy. Keywords ­ Fuel cell, hybrid source, battery, DC-DC Boost converter, Buck-boost converter

Boyer, Edmond

360

Side-Channel Resistance Evaluation of a Neural Network Based Lightweight Cryptography Scheme  

E-Print Network [OSTI]

Side-Channel Resistance Evaluation of a Neural Network Based Lightweight Cryptography Scheme Marc Email: koch@esa.cs.tu-darmstadt.de Abstract-- Side-channel attacks have changed the design of secure such as, e.g., AES, show the need to consider these aspects to build more resistant cryptographic systems

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Lessons learnt from post EIS evaluations of national road schemes in Ireland  

SciTech Connect (OSTI)

The Irish National Roads Authority (NRA) recently completed over twenty post environmental impact assessment evaluations of noise chapters prepared as part of Environmental Impact Statements (EISs) for new national road schemes in Ireland. The study focused on a range of issues including a review of noise monitoring procedures, noise prediction methodologies and an assessment of the effectiveness of noise mitigation measures currently in use on national road schemes. This review was carried out taking cognisance of best international practices for noise assessment and methodologies used to mitigate road traffic noise. The primary focus of the study was to assess the actual noise impacts of national road scheme developments and to revise, where necessary, methodologies recommended in the current NRA guidance document describing the treatment of noise on national road schemes. This paper presents a summary of the study and identifies a number of key areas that should be considered prior to the development of future guidance documents. - Highlights: Black-Right-Pointing-Pointer Presents a post-EIS evaluation of noise assessments for national roads in Ireland. Black-Right-Pointing-Pointer The effectiveness of some noise mitigation measures is critically evaluated. Black-Right-Pointing-Pointer Issues related to the current EIS noise assessment methodologies are discussed. Black-Right-Pointing-Pointer Implications for alterations to the NRA noise guidelines.

King, E.A., E-mail: kingea@tcd.ie [Department of Mechanical and Manufacturing Engineering, Parson's, Building, Trinity College, Dublin (Ireland); O'Malley, V.P. [National Roads Authority, St Martin's House, Waterloo Road, Dublin 4 (Ireland)

2012-01-15T23:59:59.000Z

362

A 2D/3D Discrete Duality Finite Volume Scheme. Application to ECG simulation  

E-Print Network [OSTI]

A 2D/3D Discrete Duality Finite Volume Scheme. Application to ECG simulation Y. Coudi`ere Universit for ECG simulation 1 Introduction Computer models of the electrical activity in the myocardium, the measurement of which on the body surface is the well-known electrocardiogram (ECG). It gives a non

Coudière, Yves

363

A mass, energy, vorticity, and potential enstrophy conserving lateral boundary scheme for the shallow water equations using piecewise  

E-Print Network [OSTI]

A mass, energy, vorticity, and potential enstrophy conserving lateral boundary scheme water equations Conservation Energy Potential enstrophy Accuracy a b s t r a c t A numerical scheme profiles with piecewise linear segments (shaved cells) while conserving the domain-summed mass, energy

Ketefian, Gerard

364

Neuron PID: A Robust AQM Scheme Jinsheng Sun, Sammy Chan, King-Tim Ko, Guanrong Chen and Moshe Zukerman  

E-Print Network [OSTI]

Neuron PID: A Robust AQM Scheme Jinsheng Sun, Sammy Chan, King-Tim Ko, Guanrong Chen and Moshe active queue management (AQM) scheme based on a Proportional-Integral- Derivative (PID) controller, called Neuron PID, that uses an adaptive neuron to tune its parameters. We demonstrate by simulations

Zukerman, Moshe

365

Modeling of an eye-imaging system for optimizing illumination schemes in an eye-tracked head-mounted  

E-Print Network [OSTI]

Modeling of an eye-imaging system for optimizing illumination schemes in an eye-tracked head While the augmentation of head-mounted displays (HMDs) with eye-tracking (ET) capabilities adds of illumination schemes in an ET-HMD system, we present a simulated eye illumination and imaging system, which

Hua, Hong

366

COMPLETELY DC-FREE DIRECT SEQUENCE SPECTRUM SPREADING SCHEME FOR LOW POWER, LOW COST, DIRECT CONVERSION TRANSCEIVER  

E-Print Network [OSTI]

call the offset code spreading scheme. By employing the scheme, we can implement a direct- conversion- level design. The direct conversion receiver architecture combined with D-BPSK (differential, there are some design problems. In a direct conversion receiver, DC offset due to carrier leakage and 1/f mixer

Lee, Thomas H.

367

An Optimal (d -1)-Fault-Tolerant All-to-All Broadcasting Scheme for d-Dimensional Hypercubes  

E-Print Network [OSTI]

An Optimal (d - 1)-Fault-Tolerant All-to-All Broadcasting Scheme for d-Dimensional Hypercubes Siu, Shatin, Hong Kong e-mail: adafucse.cuhk.edu.hk Abstract All-to-all broadcasting (Gossiping a message to transmit to all other members of the network. We proposed a k-fault- tolerant scheme

Fu, Ada Waichee

368

DEGREES OF FREEDOM IN THE MISO BC WITH DELAYED-CSIT AND FINITE COHERENCE TIME: A SIMPLE OPTIMAL SCHEME  

E-Print Network [OSTI]

DEGREES OF FREEDOM IN THE MISO BC WITH DELAYED-CSIT AND FINITE COHERENCE TIME: A SIMPLE OPTIMAL the multi-input single-output (MISO) Broadcast Channel (BC), the multi-user (MU) downlink in a cell scheme was proposed in [9] for the time cor- related MISO broadcast channel with 2 users. This scheme

Gesbert, David

369

A Multi-Scale Analysis Scheme on Abelian Groups with an Application to Operators Dual to Hill's Equation  

E-Print Network [OSTI]

We present an abstract multiscale analysis scheme for matrix functions $(H_{\\varepsilon}(m,n))_{m,n\\in \\mathfrak{T}}$, where $\\mathfrak{T}$ is an Abelian group equipped with a distance $|\\cdot|$. This is an extension of the scheme developed by Damanik and Goldstein for the special case $\\mathfrak{T} = \\mathbb{Z}^\

David Damanik; Michael Goldstein; Milivoje Lukic

2014-09-28T23:59:59.000Z

370

A Self-triggered Visual Servoing Model Predictive Control Scheme for Under-actuated Underwater Robotic Vehicles  

E-Print Network [OSTI]

extensively used in the past for the autonomous operation of underwater robotic vehicles. Complex missions Robotic Vehicles Shahab Heshmati-Alamdari, Alina Eqtami, George C. Karras, Dimos V. Dimarogonas and Kostas Control (NMPC) scheme for an under- actuated underwater robotic vehicle. In this scheme, the control loop

Dimarogonas, Dimos

371

An efficient high-order finite difference gas-kinetic scheme for the Euler and Navier-Stokes solutions  

E-Print Network [OSTI]

-kinetic scheme is constructed. Different from the previous high-order finite volume gas-kinetic method [Li, Xu) Preprint submitted to Elsevier April 17, 2013 #12;covers the gas evolution process from the particle free a new finite volume gas-kinetic scheme has been developed [27], which significantly reduces

Xu, Kun

372

Introduction Approximately 40% of rural Ethiopia (WaterAid, 2010)  

E-Print Network [OSTI]

be preferred because of their low running and maintenance costs. Experience with the use of solar energy as energy source for water supply and learning from them will help to understand the advantages for and try other sources of renewable energy such as solar, wind, and mini-hydropower. Although limited

Walter, M.Todd

373

POUR L'OBTENTION DU GRADE DE DOCTEUR S SCIENCES accepte sur proposition du jury  

E-Print Network [OSTI]

and the facilitation of renewable energy technologies. Furthermore, the phasing out of nuclear power will increase 100 kW and 10 MW (whereby 100 kW till 1 MW is considered to be mini hydropower), is a renewable energy the demand for new domestic electricity generation. According to the Federal Energy Strategy 2050, additional

374

Parameterization Schemes  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven Ashby Dr.presentations Papers &ParadeParallelTrigger

375

Approximate Waveforms for Extreme-Mass-Ratio Inspirals: The Chimera Scheme  

E-Print Network [OSTI]

We describe a new kludge scheme to model the dynamics of generic extreme-mass-ratio inspirals (EMRIs; stellar compact objects spiraling into a spinning supermassive black hole) and their gravitational-wave emission. The Chimera scheme is a hybrid method that combines tools from different approximation techniques in General Relativity: (i) A multipolar, post-Minkowskian expansion for the far-zone metric perturbation (the gravitational waveforms) and for the local prescription of the self-force; (ii) a post-Newtonian expansion for the computation of the multipole moments in terms of the trajectories; and (iii) a BH perturbation theory expansion when treating the trajectories as a sequence of self-adjusting Kerr geodesics. The EMRI trajectory is made out of Kerr geodesic fragments joined via the method of osculating elements as dictated by the multipolar post-Minkowskian radiation-reaction prescription. We implemented the proper coordinate mapping between Boyer-Lindquist coordinates, associated with the Kerr geo...

Sopuerta, Carlos F

2012-01-01T23:59:59.000Z

376

The Chimera Scheme: Approximate Waveforms for Extreme-Mass-Ratio Inspirals  

E-Print Network [OSTI]

We introduce the Chimera scheme, a new framework to model the dynamics of generic extreme mass-ratio inspirals (stellar compact objects spiraling into a spinning super-massive black hole) and to produce the gravitational waveforms that describe the gravitational wave emission of these systems. The Chimera scheme combines techniques from black hole perturbation theory and post-Minkowskian theory. The orbital evolution is approximated as a sequence of osculating geodesics that shrink due to the stellar compact object's self-acceleration. Lacking a general prescription for this self-force, we here approximate it locally in time via a post-Minkowskian expansion. The orbital evolution is thus equivalent to evolving the geodesic equations with time-dependent orbital elements, as dictated by this post-Minkowskian radiation-reaction prescription. Gravitational radiation is modeled via a multipolar expansion in post-Minkowskian theory, here taken up to mass hexadecapole and current octopole order. To complete the sche...

Sopuerta, Carlos F

2011-01-01T23:59:59.000Z

377

Making ultracold molecules in a two-color pump-dump photoassociation scheme using chirped pulses  

SciTech Connect (OSTI)

This theoretical paper investigates the formation of ground state molecules from ultracold cesium atoms in a two-color scheme. Following previous work on photoassociation with chirped picosecond pulses [Luc-Koenig et al., Phys. Rev. A, 70, 033414 (2004)], we investigate stabilization by a second (dump) pulse. By appropriately choosing the dump pulse parameters and time delay with respect to the photoassociation pulse, we show that a large number of deeply bound molecules are created in the ground triplet state. We discuss (i) broad-bandwidth dump pulses which maximize the probability to form molecules while creating a broad vibrational distribution as well as (ii) narrow-bandwidth pulses populating a single vibrational ground state level, bound by 113 cm{sup -1}. The use of chirped pulses makes the two-color scheme robust, simple, and efficient.

Koch, Christiane P. [Laboratoire Aime Cotton, CNRS, Bat. 505, Campus d'Orsay, 91405 Orsay Cedex (France); Department of Physical Chemistry and Fritz Haber Research Center, Hebrew University, Jerusalem 91904 (Israel); Luc-Koenig, Eliane; Masnou-Seeuws, Francoise [Laboratoire Aime Cotton, CNRS, Bat. 505, Campus d'Orsay, 91405 Orsay Cedex (France)

2006-03-15T23:59:59.000Z

378

Discovery of 10 micron silicate emission in quasars. Evidence of the AGN unification scheme  

E-Print Network [OSTI]

According to the unified scheme, AGN are surrounded by a dust-torus, and the observed diversity of AGN properties results from the different orientations relative to our line of sight. The strong resonance of silicate dust at 10 micron is therefore, as expected, seen in absorption towards many type-2 AGN. In type-1 AGN, it should be seen in emission because the hot inner surface of the dust torus becomes visible. However, this has not been observed so far, thus challenging the unification scheme or leading to exotic modifications of the dust-torus model. Here we report the discovery of the 10 micron silicate feature in emission in two luminous quasars with the Infrared Spectrograph of the Spitzer Space Telescope.

R. Siebenmorgen; M. Haas; E. Kr"ugel; B. Schulz

2005-04-12T23:59:59.000Z

379

A Differential Phase Shift Scheme for Quantum Key Distribution in Passive Optical Networks  

E-Print Network [OSTI]

We propose a scheme for quantum key distribution (QKD) in a passive optical network (PON) based on differential phase shift (DPS) coding. A centralized station including all expensive components serves many users, making it suitable for a true multi-user network in a local environment with moderate distances on the order of a few kilometers. The emphasis lies on an asymmetric design for cost effective implementation of network end points.

Michael Hentschel; Andreas Poppe; Bernhard Schrenk; Momtchil Peev; Edwin Querasser; Roland Lieger

2014-12-19T23:59:59.000Z

380

Control scheme for power modulation of a free piston Stirling engine  

DOE Patents [OSTI]

The present invention relates to a control scheme for power modulation of a free-piston Stirling engine-linear alternator power generator system. The present invention includes connecting an autotransformer in series with a tuning capacitance between a linear alternator and a utility grid to maintain a constant displacement to piston stroke ratio and their relative phase angle over a wide range of operating conditions.

Dhar, Manmohan (Schenectady, NY)

1989-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Efficient numerical schemes for viscoplastic avalanches. Part 1: The 1D case  

SciTech Connect (OSTI)

This paper deals with the numerical resolution of a shallow water viscoplastic flow model. Viscoplastic materials are characterized by the existence of a yield stress: below a certain critical threshold in the imposed stress, there is no deformation and the material behaves like a rigid solid, but when that yield value is exceeded, the material flows like a fluid. In the context of avalanches, it means that after going down a slope, the material can stop and its free surface has a non-trivial shape, as opposed to the case of water (Newtonian fluid). The model involves variational inequalities associated with the yield threshold: finite-volume schemes are used together with duality methods (namely Augmented Lagrangian and BermdezMoreno) to discretize the problem. To be able to accurately simulate the stopping behavior of the avalanche, new schemes need to be designed, involving the classical notion of well-balancing. In the present context, it needs to be extended to take into account the viscoplastic nature of the material as well as general bottoms with wet/dry fronts which are encountered in geophysical geometries. We derived such schemes and numerical experiments are presented to show their performances.

Fernndez-Nieto, Enrique D., E-mail: edofer@us.es [Departamento de Matemtica Aplicada I, Universidad de Sevilla, E.T.S. Arquitectura, Avda, Reina Mercedes, s/n, 41012 Sevilla (Spain); Gallardo, Jos M., E-mail: jmgallardo@uma.es [Departamento de Anlisis Matemtico, Universidad de Mlaga, F. Ciencias, Campus Teatinos S/N (Spain); Vigneaux, Paul, E-mail: Paul.Vigneaux@math.cnrs.fr [Unite de Mathmatiques Pures et Appliques, Ecole Normale Suprieure de Lyon, 46 alle d'Italie, 69364 Lyon Cedex 07 (France)

2014-05-01T23:59:59.000Z

382

The stability of spectroscopic instruments: A unified Allan variance computation scheme  

E-Print Network [OSTI]

The Allan variance is a standard technique to characterise the stability of spectroscopic instruments used in astronomical observations. The period for switching between source and reference measurement is often derived from the Allan minimum time. We propose a new approach for the computation of the Allan variance of spectrometer data combining the advantages of the two existing methods into a unified scheme. Using the Allan variance spectrum we derive the optimum strategy for symmetric observing schemes minimising the total uncertainty of the data resulting from radiometric and drift noise. The unified Allan variance computation scheme is designed to trace total-power and spectroscopic fluctuations within the same framework. The method includes an explicit error estimate both for the individual Allan variance spectra and for the derived stability time. A new definition of the instrument stability time allows to characterise the instrument even in the case of a fluctuation spectrum shallower than 1/f, as measured for the total power fluctuations in high-electron-mobility transistors. We find a non-linear impact of the binning of spectrometer channels on the resulting noise and the Allan time deviating from the description in existing theoretical treatments.

Volker Ossenkopf

2007-12-28T23:59:59.000Z

383

An analytical demonstration of coupling schemes between magnetohydrodynamic codes and eddy current codes  

SciTech Connect (OSTI)

In order to model a magnetohydrodynamic (MHD) instability that strongly couples to external conducting structures (walls and/or coils) in a fusion device, it is often necessary to combine a MHD code solving for the plasma response, with an eddy current code computing the fields and currents of conductors. We present a rigorous proof of the coupling schemes between these two types of codes. One of the coupling schemes has been introduced and implemented in the CARMA code [R. Albanese, Y. Q. Liu, A. Portone, G. Rubinacci, and F. Villone, IEEE Trans. Magn. 44, 1654 (2008); A. Portone, F. Villone, Y. Q. Liu, R. Albanese, and G. Rubinacci, Plasma Phys. Controlled Fusion 50, 085004 (2008)] that couples the MHD code MARS-F[Y. Q. Liu, A. Bondeson, C. M. Fransson, B. Lennartson, and C. Breitholtz, Phys. Plasmas 7, 3681 (2000)] and the eddy current code CARIDDI[R. Albanese and G. Rubinacci, Adv. Imaging Electron Phys. 102, 1 (1998)]. While the coupling schemes are described for a general toroidal geometry, we give the analytical proof for a cylindrical plasma.

Liu Yueqiang [Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Albanese, R.; Rubinacci, G. [ENEA/CREATE, Universita Federico II di Napoli, Via Claudio 21, Napoli (Italy); Portone, A. [EFDA-CSU Barcelona, C/Josep Pla 2, B3, 08019 Barcelona (Spain); Villone, F. [ENEA/CREATE, DAEIMI, Universita di Cassino, Via di Biasio 43, Cassino (Italy)

2008-07-15T23:59:59.000Z

384

An Advanced Computational Scheme for the Optimization of 2D Radial Reflectors in Pressurized Water Reactors  

E-Print Network [OSTI]

This paper presents a computational scheme for the determination of equivalent 2D multi-group heterogeneous reflectors in a Pressurized Water Reactor (PWR). The proposed strategy is to define a full-core calculation consistent with a reference lattice code calculation such as the Method Of Characteristics (MOC) as implemented in APOLLO2 lattice code. The computational scheme presented here relies on the data assimilation module known as "Assimilation de donn\\'{e}es et Aide \\`{a} l'Optimisation (ADAO)" of the SALOME platform developed at \\'{E}lectricit\\'{e} De France (EDF), coupled with the full-core code COCAGNE and with the lattice code APOLLO2. A first validation of the computational scheme is made using the OPTEX reflector model developed at \\'{E}cole Polytechnique de Montr\\'{e}al (EPM). As a result, we obtain 2D multi-group, spatially heterogeneous 2D reflectors, using both diffusion or $\\text{SP}_{\\text{N}}$ operators. We observe important improvements of the power discrepancies distribution over the cor...

Clerc, Thomas; Leroyer, Hadrien; Argaud, Jean-Philippe; Bouriquet, Bertrand; Ponot, Aglique

2014-01-01T23:59:59.000Z

385

Diffusion Synthetic Acceleration for High-Order Discontinuous Finite Element SN Transport Schemes and Application to Locally Refined Unstructured Meshes  

SciTech Connect (OSTI)

Diffusion synthetic acceleration (DSA) schemes compatible with adaptive mesh refinement (AMR) grids are derived for the SN transport equations discretized using high-order discontinuous finite elements. These schemes are directly obtained from the discretized transport equations by assuming a linear dependence in angle of the angular flux along with an exact Fick's law and, therefore, are categorized as partially consistent. These schemes are akin to the symmetric interior penalty technique applied to elliptic problems and are all based on a second-order discontinuous finite element discretization of a diffusion equation (as opposed to a mixed or P1 formulation). Therefore, they only have the scalar flux as unknowns. A Fourier analysis has been carried out to determine the convergence properties of the three proposed DSA schemes for various cell optical thicknesses and aspect ratios. Out of the three DSA schemes derived, the modified interior penalty (MIP) scheme is stable and effective for realistic problems, even with distorted elements, but loses effectiveness for some highly heterogeneous configurations. The MIP scheme is also symmetric positive definite and can be solved efficiently with a preconditioned conjugate gradient method. Its implementation in an AMR SN transport code has been performed for both source iteration and GMRes-based transport solves, with polynomial orders up to 4. Numerical results are provided and show good agreement with the Fourier analysis results. Results on AMR grids demonstrate that the cost of DSA can be kept low on locally refined meshes.

Yaqi Wang; Jean C. Ragusa

2011-10-01T23:59:59.000Z

386

Bandwidth efficient channel estimation for multiple-input multiple-output (MIMO) wireless communication systems : a study of semi-blind and superimposed schemes  

E-Print Network [OSTI]

thesis to analyze the performance of the proposed esti- mation schemes. Whitening-Rotation Based Semi-Blind

Jagannatham, Aditya K.

2007-01-01T23:59:59.000Z

387

IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 33, NO. 4, OCTOBER 2008 489 Distributed SpaceTime Cooperative Schemes for  

E-Print Network [OSTI]

­Time Cooperative Schemes for Underwater Acoustic Communications Madhavan Vajapeyam, Member, IEEE, Satish Vedantam of multipath, thus addressing a main characteristic of underwater acoustic channels. A time, pollution monitoring, tactical surveillance, and disaster preven- tion [1], [2]. Manuscript received

Stojanovic, Milica

388

SPACE TIME INTERFERENCE ALIGNMENT SCHEME FOR THE MIMO BC AND IC WITH DELAYED CSIT AND FINITE COHERENCE TIME  

E-Print Network [OSTI]

and Heath, space-time interference align- ment (STIA), proves that in the underdetermined (overloaded) multi in [11] proposed a scheme, hereafter referred to as space-time interference alignment (STIA

Gesbert, David

389

Multidimensional simulation studies of the SELENE FEL oscillator/buncher followed by a radiator/amplifier output scheme  

SciTech Connect (OSTI)

We analyze and present numerical simulations of the so-called electron output scheme [G. I. Erg et al., 15th Int. FEL Conf., The Hague, The Netherlands, 1993, Book of Abstracts p. 50; Preprint Budker INP 93-75] applied to the SELENE proposal of using a high power FEL to illuminate satellite solar cells. In this scheme, a first stage FEL oscillator bunches the electron beam while a second stage ``radiator`` extracts high power radiation. Our analysis suggests only in the case where the radiator employs a long, tapered undulator will the electron output scheme produce a significant increase in extraction efficiency over what is obtainable from a simple, single-stage oscillator. 1- and 2-D numerical simulations of a 1.7{mu}m FEL employing the electron output scheme show reasonably large bunching fractions ({approximately} 0.3--0.4) at the output of the oscillator stage but only {le}2% extraction efficiency from the radiator stage.

Hahn, S.J. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Fawley, W.M. [Lawrence Berkeley Lab., CA (United States)

1995-02-01T23:59:59.000Z

390

Prediction of solid-aqueous equilibria: Scheme to combine first-principles calculations of solids with experimental aqueous states  

E-Print Network [OSTI]

We present an efficient scheme for combining ab initio calculated solid states with experimental aqueous states through a framework of consistent reference energies. Our work enables accurate prediction of phase stability ...

Persson, Kristin A.

391

A simple scheme for universal linear optics quantum computing with constant experimental complexity using fiber-loops  

E-Print Network [OSTI]

Recently, Motes, Gilchrist, Dowling & Rohde [Phys. Rev. Lett. 113, 120501 (2014)] presented a scheme for photonic boson-sampling using a fiber-loop architecture. Here we show that the same architecture can be modified to implement full, universal linear optics quantum computing, in various incarnations. The scheme employs two embedded fiber-loops, a single push-button photon source, three dynamically controlled beamsplitters, and a single time-resolved photo-detector. The architecture has only a single point of interference, and thus may be significantly easier to align than other schemes. The experimental complexity of the scheme is constant, irrespective of the size of the computation, limited only by fiber lengths and their respective loss rates.

Peter P. Rohde

2014-10-02T23:59:59.000Z

392

Effects of mineral aerosols on the summertime climate of southwest Asia: Incorporating subgrid variability in a dust emission scheme  

E-Print Network [OSTI]

[1] Improvements in modeling mineral aerosols over southwest Asia are made to the dust scheme in a regional climate model by representing subgrid variability of both wind speed and surface roughness length. The new module ...

Marcella, Marc Pace

393

Over-Allocation or Abatement? A Preliminary Analysis of the EU Emissions Trading Scheme Based on the 2005 Emissions Data  

E-Print Network [OSTI]

This paper provides an initial analysis of the European Union Emissions Trading Scheme (EU ETS) based on the installation-level data for verified emissions and allowance allocations in the first trading year. Those data, ...

Ellerman, A. Denny.

394

Study of full implicit petroleum engineering finite volume scheme for compressible two phase flow in porous media  

E-Print Network [OSTI]

An industrial scheme, to simulate the two compressible phase flow in porous media, consists in a finite volume method together with a phase-by-phase upstream scheme. The implicit finite volume scheme satisfies industrial constraints of robustness. We show that the proposed scheme satisfy the maximum principle for the saturation, a discrete energy estimate on the pressures and a function of the saturation that denote capillary terms. These stabilities results allow us to derive the convergence of a subsequence to a weak solution of the continuous equations as the size of the discretization tends to zero. The proof is given for the complete system when the density of the each phase depends on the own pressure.

Saad, Bilal

2012-01-01T23:59:59.000Z

395

Irish Astr. J., 27(1), XXXX, (2000) M. D. SMITH EVOLUTIONARY SCHEMES FOR PROTOSTARS, PROTO BROWN DWARFS  

E-Print Network [OSTI]

Irish Astr. J., 27(1), XXXX, (2000) M. D. SMITH EVOLUTIONARY SCHEMES FOR PROTOSTARS, PROTO BROWN DWARFS AND THEIR ENVIRONMENTS M. D. SMITH Armagh Observatory, College Hill, Armagh, N. Ireland, BT61 9DG

396

A Novel Current Angle Control Scheme in a Current Source Inverter Fed Permanent Magnet Synchronous Motor Drive for Automotive Applications  

SciTech Connect (OSTI)

This paper describes a novel speed control scheme to operate a current source inverter (CSI) driven surface-mounted permanent magnet synchronous machine (SPMSM) for hybrid electric vehicles (HEVs) applications. The idea is to use the angle of the current vector to regulate the rotor speed while keeping the two dc-dc converter power switches on all the time to boost system efficiency. The effectiveness of the proposed scheme was verified with a 3 kW CSI-SPMSM drive prototype.

Tang, Lixin [ORNL] [ORNL; Su, Gui-Jia [ORNL] [ORNL

2011-01-01T23:59:59.000Z

397

Performance Analysis of Positive-feedback-based Active Anti-islanding Schemes for Inverter-Based Distributed Generators  

SciTech Connect (OSTI)

Recently proposed positive-feedback-based anti-islanding schemes (AI) are highly effective in preventing islanding without causing any degradation in power quality. This paper aims to analyze the performance of these schemes quantitatively in the context of the dynamic models of inverter-based distributed generators (DG). In this study, the characteristics of these active anti-islanding methods are discussed and design guidelines are derived.

Du, Pengwei; Aponte, Erick E.; Nelson, J. Keith

2010-06-14T23:59:59.000Z

398

The effect of two deletion schemes upon the comprehension and reading rate of five levels of telegraphic prose  

E-Print Network [OSTI]

between the two deletion schemes that would involve a relative increase in comprehension, reading rate, and efficiency for the subject generated scheme with 1ncreasing percentages of deletion. (5) The index of agreement among subjects on the rank... Reduced Version of the Passage Based on 50% Deletion (S5) Randomly Reduced Version of the Passage Based on IOX Deletion (Rl) Randomly Reduced Version of the Passage Based on 20% Deletion (R2) Randomly Reduced Version of the Passage Based on 30K...

Pantalion, Charles Adrian

1972-01-01T23:59:59.000Z

399

Application of a medium-range global hydrologic probabilistic forecast scheme to the Ohio River Basin  

SciTech Connect (OSTI)

A 10-day globally applicable flood prediction scheme was evaluated using the Ohio River basin as a test site for the period 2003-2007. The Variable Infiltration Capacity (VIC) hydrology model was initialized with the European Centre for Medium Range Weather Forecasts (ECMWF) analysis temperatures and wind, and Tropical Rainfall Monitoring Mission Multi Satellite Precipitation Analysis (TMPA) precipitation up to the day of forecast. In forecast mode, the VIC model was then forced with a calibrated and statistically downscaled ECMWF ensemble prediction system (EPS) 10-day ensemble forecast. A parallel set up was used where ECMWF EPS forecasts were interpolated to the spatial scale of the hydrology model. Each set of forecasts was extended by 5 days using monthly mean climatological variables and zero precipitation in order to account for the effect of initial conditions. The 15-day spatially distributed ensemble runoff forecasts were then routed to four locations in the basin, each with different drainage areas. Surrogates for observed daily runoff and flow were provided by the reference run, specifically VIC simulation forced with ECMWF analysis fields and TMPA precipitation fields. The flood prediction scheme using the calibrated and downscaled ECMWF EPS forecasts was shown to be more accurate and reliable than interpolated forecasts for both daily distributed runoff forecasts and daily flow forecasts. Initial and antecedent conditions dominated the flow forecasts for lead times shorter than the time of concentration depending on the flow forecast amounts and the drainage area sizes. The flood prediction scheme had useful skill for the 10 following days at all sites.

Voisin, Nathalie; Pappenberger, Florian; Lettenmaier, D. P.; Buizza, Roberto; Schaake, John

2011-08-15T23:59:59.000Z

400

Implicit and explicit schemes for mass consistency preservation in hybrid particle/finite-volume algorithms for turbulent reactive flows  

SciTech Connect (OSTI)

This work addresses the issue of particle mass consistency in Large Eddy Simulation/Probability Density Function (LES/PDF) methods for turbulent reactive flows. Numerical schemes for the implicit and explicit enforcement of particle mass consistency (PMC) are introduced, and their performance is examined in a representative LES/PDF application, namely the SandiaSydney Bluff-Body flame HM1. A new combination of interpolation schemes for velocity and scalar fields is found to better satisfy PMC than multilinear and fourth-order Lagrangian interpolation. A second-order accurate time-stepping scheme for stochastic differential equations (SDE) is found to improve PMC relative to Euler time stepping, which is the first time that a second-order scheme is found to be beneficial, when compared to a first-order scheme, in an LES/PDF application. An explicit corrective velocity scheme for PMC enforcement is introduced, and its parameters optimized to enforce a specified PMC criterion with minimal corrective velocity magnitudes.

Popov, Pavel P., E-mail: ppopov@uci.edu; Pope, Stephen B.

2014-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Second order symmetry-preserving conservative Lagrangian scheme for compressible Euler equations in two-dimensional cylindrical coordinates  

SciTech Connect (OSTI)

In applications such as astrophysics and inertial confinement fusion, there are many three-dimensional cylindrical-symmetric multi-material problems which are usually simulated by Lagrangian schemes in the two-dimensional cylindrical coordinates. For this type of simulation, a critical issue for the schemes is to keep spherical symmetry in the cylindrical coordinate system if the original physical problem has this symmetry. In the past decades, several Lagrangian schemes with such symmetry property have been developed, but all of them are only first order accurate. In this paper, we develop a second order cell-centered Lagrangian scheme for solving compressible Euler equations in cylindrical coordinates, based on the control volume discretizations, which is designed to have uniformly second order accuracy and capability to preserve one-dimensional spherical symmetry in a two-dimensional cylindrical geometry when computed on an equal-angle-zoned initial grid. The scheme maintains several good properties such as conservation for mass, momentum and total energy, and the geometric conservation law. Several two-dimensional numerical examples in cylindrical coordinates are presented to demonstrate the good performance of the scheme in terms of accuracy, symmetry, non-oscillation and robustness. The advantage of higher order accuracy is demonstrated in these examples.

Cheng, Juan, E-mail: cheng_juan@iapcm.ac.cn [Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China); Shu, Chi-Wang, E-mail: shu@dam.brown.edu [Division of Applied Mathematics, Brown University, Providence, RI 02912 (United States)

2014-09-01T23:59:59.000Z

402

A cost-benefit approach to youth vocational training schemes in Africa  

E-Print Network [OSTI]

) December 1974 ABSTRACT A COST-BENEFIT APPROACH TO YOUTH VOCATIONAL TRAINING SCHENES IN AFRICA. (December 1974) Emmanuel Bol Kuanyin, B. Sc. (Honours). Un1- verity of Khartoum, Sudan. Directed by: Dr. Alan Rufus Waters The objective of this thesis... is the construct1on of an analytical framework for the evaluation of benef1ts and costs of youth vocational train1ng schemes in Africa. After the discussion of the role of human capital in economic development and the problems of its accumu lat1on in Africa...

Kuanyin, Emmanuel Bol

1974-01-01T23:59:59.000Z

403

Semi-passive, Chemical Oxidation Schemes for the Long-term Treatment of Contaminants  

SciTech Connect (OSTI)

This research involves a combined experimental and modeling study that builds on our previous DOE-sponsored work in investigating how KMnO{sub 4} can be better used with in situ remediation of groundwater contaminated by chlorinated ethylenes (e.g., PCE, TCE, DCE). This study aims to provide scientific basis for developing a new long-term, semi-passive ISCO scheme that uses controlled release KMnO{sub 4} as a reactive barrier component. Specific objectives of the study are (1) to construct controlled release KMnO{sub 4} as a new reactive barrier component that could deliver permanganate at a controlled rate over long time periods of years, (2) to quantitatively describe release mechanisms associated with the controlled release KMnO{sub 4}, (3) to demonstrate efficacy of the new remediation scheme using proof-of-concept experiments, and (4) to design advanced forms of controlled release systems through numerical optimization. The new scheme operates in a long-term, semi-passive manner to control spreading of a dissolved contaminant plume with periodic replacement of the controlled release KMnO{sub 4} installed in the subsurface. As a first step in developing this remedial concept, we manufactured various prototype controlled release KMnO{sub 4} forms. Then we demonstrated using column experiments that the controlled release KMnO{sub 4} could deliver small amount of permanganate into flowing water at controlled rates over long time periods of years. An analytical model was also used to estimate the diffusivities and durations of the controlled release KMnO{sub 4}. Finally, proof-of-concept flow-tank experiments were performed to demonstrate the efficacy of the controlled release KMnO{sub 4} scheme in controlling dissolved TCE plume in a long-term, semi-passive manner. Another important thrust of our research effort involved numerical optimization of controlled release systems. This study used a numerical model that is capable of describing release patterns of active agent from controlled release systems of varied forms and applications. We manufactured prototype single- and double-layered matrix-type controlled release systems and tested their release patterns using numerical simulations and column experiments. In a series of simulations, we demonstrated that an encapsulated, dispersed-agent polymeric matrix-type controlled release system could deliver active agent at a predetermined constant rate for long time periods of years and decades. Such long-term, constant release system is useful in the construction of fertilizers, herbicides, or implantable drug delivery devices as well as in subsurface treatment. Construction of more advanced forms of controlled release systems is currently under way.

Frank W. Schwartz

2005-12-13T23:59:59.000Z

404

Unconditional security of the Bennett 1992 quantum key-distribution scheme with strong reference pulse  

E-Print Network [OSTI]

We prove the unconditional security of the original Bennett 1992 protocol with strong reference pulse. We show that we may place a projection onto suitably defined qubit spaces before the receiver, which makes the analysis as simple as qubit-based protocols. Unlike the single-photon-based qubits, the qubits identified in this scheme are almost surely detected by the receiver even after a lossy channel. This leads to the key generation rate that is proportional to the channel transmission rate for proper choices of experimental parameters.

Kiyoshi Tamaki; Norbert Ltkenhaus; Masato Koashi; Jamie Batuwantudawe

2009-09-03T23:59:59.000Z

405

Permanganate Treatment of DNAPLs in Reactive Barriers and Source Zone Flooding Schemes  

SciTech Connect (OSTI)

Permanganate is a simple and common chemical, which has proven useful in oxidizing common chlorinated solvents. Due to the nature of oxidation, the byproducts and products are much less harmful than those from reduction-type remedial schemes, and the degradation process is rapid. The main goal of this project is to understand oxidative destruction of chlorinated solvents using potassium permanganate. The study has provided a theoretical basis for evaluating the feasibility of in-situ applications, to couple kinetic reaction with transport models, and to develop an appropriate field test for further assessing the approach.

Dr. Franklin Schwartz; Dr. Hubao Zhang

2003-12-23T23:59:59.000Z

406

A study of various encapsulation schemes for c-Si solar cells with EVA encapsulants  

SciTech Connect (OSTI)

Several encapsulation schemes for crystalline Si (c-Si) solar cells, grouped into three categories of superstrate/encapsulant/Si-cell/encapsulant/substrate, were studied using different superstrates and substrates with extruded EVA films as the main encapsulant materials. A number of technical problems were observed and practical solutions to the problems are presented. The results are useful for designing and fabricating various samples of encapsulated c-Si cells and mini-modules for accelerated weathering tests in our future work. {copyright} {ital 1997 American Institute of Physics.}

Pern, F.J.; Glick, S.H. [Center for Performance Engineering and Reliability, National Renewable Energy Laboratory (NREL), 1617 Cole Blvd., Golden, Colorado 80401 (United States)

1997-02-01T23:59:59.000Z

407

The Conducting of a Mining Negotiation Showing the Scheme of Engineering Involved  

E-Print Network [OSTI]

and capable of lifting the heaviest piece of any one of these machines. CEAIIT BLOCKS:- One fl) 8 ton triplex chain block, complete, equip- ped with sufficient chain for a 14* lift. One (1) 3 ton triplex chain block, equipped with sufficient chain for a 22... E S I S , "The conducting of a Mining negotiation Show- ng the Scheme of Engineering Involved." Taken from Actual Practice 13 7 SEQRGE T. HAISB1 MIIIIS SALES EET5IHEBR ALLIS GHALMBBS OOMPASY ST. LOUIS, MISSOURI Presented to the College...

Hansen, George T.

1911-01-01T23:59:59.000Z

408

A stochastic particle-mesh scheme for uncertainty propagation in vortical flows  

SciTech Connect (OSTI)

A new mesh-particle scheme is constructed for uncertainty propagation in vortical flow. The scheme is based on the incorporation of polynomial chaos (PC) expansions into a Lagrangian particle approximation of the Navier-Stokes equations. The main idea of the method is to use a unique set of particles to transport the stochastic modes of the solution. The particles are transported by the mean velocity field, while their stochastic strengths are updated to account for diffusive and convective effects induced by the coupling between stochastic modes. An integral treatment is used for the evaluation of the coupled stochastic terms, following the framework of the particle strength exchange (PSE) methods, which yields a conservative algorithm. It is also shown that it is possible to apply solution algorithms used in deterministic setting, including particle-mesh techniques and particle remeshing. Thus, the method combines the advantages of particles discretizations with the efficiency of PC representations. Validation of the method on uncertain diffusion and convection problems is first performed. An example is then presented of natural convection of a hot patch of fluid in infinite domain, and the computations are used to illustrate the effectiveness of the approach for both large number of particles and high-order PC expansions.

Le Maitre, Olivier P. [Laboratoire de Mecanique et d'Energetique d'Evry and LIMSI-CNRS, Universite d'Evry Val d'Essonne, 40, rue du Pelvoux, CE 1455, 91020 Evry Cedex (France)], E-mail: olm@iup.univ-evry.fr; Knio, Omar M. [Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218-2686 (United States)], E-mail: knio@jhu.edu

2007-09-10T23:59:59.000Z

409

Deterministic multivalued logic scheme for information processing and routing in the brain  

E-Print Network [OSTI]

Driven by analogies with state vectors of quantum informatics and noise-based logic, we propose a general scheme and elements of neural circuitry for processing and addressing information in the brain. Specifically, we consider random (e.g., Poissonian) trains of finite-duration spikes, and, using the idealized concepts of excitatory and inhibitory synapses, offer a procedure for generating 2^N-1 orthogonal vectors out of N partially overlapping trains ("neuro-bits"). We then show that these vectors can be used to construct 2^(2^N-1)-1 different superpositions which represent the same number of logic values when carrying or routing information. In quantum informatics the above numbers are the same, however, the present logic scheme is more advantageous because it is deterministic in the sense that the presence of a vector in the spike train is detected by an appropriate coincidence circuit. For this reason it does not require time averaging or repeated measurements of the kind used in standard cross-correlation analysis or in quantum computing.

S. M. Bezrukov; L. B. Kish

2009-05-06T23:59:59.000Z

410

Converged accelerated finite difference scheme for the multigroup neutron diffusion equation  

SciTech Connect (OSTI)

Computer codes involving neutron transport theory for nuclear engineering applications always require verification to assess improvement. Generally, analytical and semi-analytical benchmarks are desirable, since they are capable of high precision solutions to provide accurate standards of comparison. However, these benchmarks often involve relatively simple problems, usually assuming a certain degree of abstract modeling. In the present work, we show how semi-analytical equivalent benchmarks can be numerically generated using convergence acceleration. Specifically, we investigate the error behavior of a 1D spatial finite difference scheme for the multigroup (MG) steady-state neutron diffusion equation in plane geometry. Since solutions depending on subsequent discretization can be envisioned as terms of an infinite sequence converging to the true solution, extrapolation methods can accelerate an iterative process to obtain the limit before numerical instability sets in. The obtained results have been compared to the analytical solution to the 1D multigroup diffusion equation when available, using FORTRAN as the computational language. Finally, a slowing down problem has been solved using a cascading source update, showing how a finite difference scheme performs for ultra-fine groups (104 groups) in a reasonable computational time using convergence acceleration. (authors)

Terranova, N.; Mostacci, D. [DIENCA - Dipartimento di Ingegneria Energetica Nucleare e del Controllo Ambientale, Universita Alma Mater Studiorum, Bologna (Italy); Ganapol, B. D. [Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson AZ (United States)

2013-07-01T23:59:59.000Z

411

Community wind power ownership schemes in Europe and their relevance to the United States  

SciTech Connect (OSTI)

With varying success, the United States and Europe have followed a more or less parallel path of policies to support wind development over the past twenty years. Feed-in laws and tax incentives first popularized in California in the early 1980s and greatly expanded upon in Europe during the 1990s are gradually giving way to market-based support mechanisms such as renewable portfolio standards, which are being implemented in one form or another in ten US states and at least three European nations. At the same time, electricity markets are being liberalized in both the US and Europe, and many electricity consumers are being given the choice to support the development of renewable energy through higher tariffs, both in traditionally regulated and newly competitive markets. One notable area in which wind development in Europe and United States has not evolved in common, however, is with respect to the level of community ownership of wind turbines or clusters. While community ownership of wind projects is unheard of in the United States, in Europe, local wind cooperatives or other participatory business schemes have been responsible for a large share of total wind development. In Denmark, for example, approximately 80% of all wind turbines are either individually or cooperatively owned, and a similar pattern holds in Germany, the world leader in installed wind capacity. Sweden also has a strong wind cooperative base, and the UK has recently made forays into community wind ownership. Why is it that wind development has evolved this way in Europe, but not in the United States? What incremental effect have community-owned wind schemes had on European wind development? Have community-owned wind schemes driven development in Europe, or are they merely a vehicle through which the fundamental driving institutions have been channeled? Is there value to having community wind ownership in the US? Is there reason to believe that such schemes would succeed in the US? If so, which model seems most appropriate, and what barriers--legal, regulatory, tax, market, or investment--stand in the way of implementing such a scheme? These are the questions this report seeks to address. The report begins with a discussion of the relative advantages and disadvantages of community wind ownership, as opposed to the large commercially-owned projects that have so far dominated US wind development. Next, four detailed case studies relate community-owned wind experience in Denmark, Sweden, the UK, Germany, focusing primarily on the different participatory models employed in each country. The report then categorizes the various models into three main groupings--community-led, developer-led, and investment funds--and draws general conclusions about the success of each category in Europe, and the conditions that dictate the effective use of one approach over another. Finally, the focus shifts to the US, where the report discusses the domestic barriers facing each model category, and identifies the category offering the most value with the fewest barriers to implementation. The report concludes with a high-level introduction to potential applications for community wind ownership within the United States.

Bolinger, Mark

2001-05-15T23:59:59.000Z

412

Hyperbolic reformulation of a 1D viscoelastic blood flow model and ADER finite volume schemes  

SciTech Connect (OSTI)

The applicability of ADER finite volume methods to solve hyperbolic balance laws with stiff source terms in the context of well-balanced and non-conservative schemes is extended to solve a one-dimensional blood flow model for viscoelastic vessels, reformulated as a hyperbolic system, via a relaxation time. A criterion for selecting relaxation times is found and an empirical convergence rate assessment is carried out to support this result. The proposed methodology is validated by applying it to a network of viscoelastic vessels for which experimental and numerical results are available. The agreement between the results obtained in the present paper and those available in the literature is satisfactory. Key features of the present formulation and numerical methodologies, such as accuracy, efficiency and robustness, are fully discussed in the paper.

Montecinos, Gino I.; Mller, Lucas O.; Toro, Eleuterio F.

2014-06-01T23:59:59.000Z

413

Novel light trapping scheme for thin crystalline cells utilizing deep structures on both wafer sides  

SciTech Connect (OSTI)

A new light trapping structure is presented with trapping capabilities comparable to or better than those of the perpendicular grooves structure. The new structure traps a larger fraction of rays for 8--80 passes than the perpendicular grooves structure. The average path length enhancement is about 62 times the average thickness. The structure consists of deep ({approximately}200 {micro}m) inverted pyramids on the front side and deep ({approximately}200 {micro}m) truncated pyramids with eight sides on the back. The structure is realized in crystalline silicon by wet chemical etching using potassium hydroxide (KOH) and isopropanol (IPA). A process for creating thin solar cells with this light trapping scheme is described. The process includes only two main photolithographic steps and features a self aligned front metallization. The process uses 250 {micro}m wafers to create cells that on average are about 70 {micro}m thick.

Jorgensen, A.M.; Clausen, T.; Leistiko, O. [Technical Univ. of Denmark, Lyngby (Denmark). Microelectronics Centre

1997-12-31T23:59:59.000Z

414

Underground pumped storage scheme in the Bukit Timah granite of Singapore  

SciTech Connect (OSTI)

Pumped storage is an energy storage method that involves the pumping of water from a lower reservoir to an upper reservoir during off-peak period using low cost power and releasing of the water from the upper reservoir to produce electricity during peak load period. Because of the very small and relatively flat land area of Singapore, a conventional surface pumped storage plant is not feasible. A pumped storage plant can be constructed here by siting the upper reservoir in one of the many abandoned granite quarries and by placing the lower reservoir and the powerhouse underground in the Bukit Timah granite, which is sound, massive and impervious. The capital costs for a pumped storage plant could be the same as those of an oil-fired plant of a comparable size. When the very high cost of land in Singapore is taken into account, an underground pumped storage scheme for peaking purposes becomes attractive. 7 refs., 4 figs., 3 tabs.

Wong, I.H. [Nanyang Technological Univ. (Singapore)] [Nanyang Technological Univ. (Singapore)

1996-10-01T23:59:59.000Z

415

A high carrier injection terahertz quantum cascade laser based on indirectly pumped scheme  

SciTech Connect (OSTI)

A Terahertz quantum cascade laser with a rather high injection coupling strength based on an indirectly pumped scheme is designed and experimentally implemented. To effectively suppress leakage current, the chosen quantum cascade module of the device is based on a five-well GaAs/Al{sub 0.25}Ga{sub 0.75}As structure. The device lases up to 151?K with a lasing frequency of 2.67 THz. This study shows that the effect of higher energy states in carrier transport and the long-range tunnel coupling between states that belong to non-neighbouring modules have to be considered in quantum design of structures with a narrow injector barrier. Moreover, the effect of interface roughness scattering between the lasing states on threshold current is crucial.

Razavipour, S. G., E-mail: sgrazavi@uwaterloo.ca; Xu, C.; Wasilewski, Z. R.; Ban, D. [Department of Electrical and Computer Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave. W., Waterloo, Ontario N2L3G1 (Canada); Dupont, E.; Laframboise, S. R. [National Research Council, Blg. M-50, 1200 Montreal Rd., Ottawa, Ontario K1A0R6 (Canada); Chan, C. W. I.; Hu, Q. [Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2014-01-27T23:59:59.000Z

416

Cryogenic Test of a Coaxial Coupling Scheme for Fundamental and Higher Order Modes in Superconducting Cavities  

SciTech Connect (OSTI)

A coaxial coupling device located in the beam pipe of the TESLA type superconducting cavities provides for better propagation of Higher Order Modes (HOMs) and their strong damping in appropriate HOM couplers. Additionally, it also provides efficient coupling for fundamental mode RF power into the superconducting cavity. The whole coupling device can be designed as a detachable system. If appropriately dimensioned, the magnetic field can be minimized to a negligible level at the flange position. This scheme, presented previously*, provides for several advantages: strong HOM damping, flangeable solution, exchangeability of the HOM damping device on a cavity, less complexity of the superconducting cavity, possible cost advantages. This contribution will describe the results of the first cryogenic test.

J.K. Sekutowicz, P. Kneisel

2009-05-01T23:59:59.000Z

417

Grid porting of Bhabha scattering code through a master-worker scheme  

E-Print Network [OSTI]

A program calculating Bhabha scattering at high energy colliders is considered for porting to the EGEE Grid infrastructure. The program code, which is a result of the aITALC project, is ported by using a master-worker operating scheme. The job submission, execution and monitoring are implemented using the GridWay metascheduler. The unattended execution of jobs turned out to be complete and rather efficient, even when pre-knowledge of the grid is absent. While the batch of jobs remains organized at the user's side, the actual computation was carried out within the phenogrid virtual organization. The scientific results support the use of the small angle Bhabha scattering for the luminosity measurements of the International Linear Collider project.

Alejandro Lorca; Jose Luis Vazquez-Poletti; Eduardo Huedo; Ignacio M. Llorente

2009-04-01T23:59:59.000Z

418

Permanganate Treatment of DNAPLs in Reactive Barriers and Source Zone Flooding Schemes - Final Report  

SciTech Connect (OSTI)

This study provides a detailed process-level understanding of the oxidative destruction of the organic contaminant emphasizing on reaction pathways and kinetics. A remarkable rise in the MnO{sup {minus}} consumption rate with TCA and PCE mixtures proves that the phase transfer catalysts have the ability to increase oxidation rate of DNAPLs either in pure phase or mixtures and that there is significant potential for testing the catalyzed scheme under field conditions. Secondly, as an attempt to enhance the oxidation of DNAPL, we are trying to exploit cosolvency effects, utilizing various alcohol-water mixtures to increase DNAPL solubilization. Preliminary results of cosolvency experiments indicate the enhancement in the transfer of nonaqueous phase TCE to TBA-water solution and the rate of TCE degradation in aqueous phase.

Schwartz, F.W.

2000-10-01T23:59:59.000Z

419

Reduction of Quark Mass Scheme Dependence in B bar -> Xs gamma at the NNLL Level  

SciTech Connect (OSTI)

The uncertainty of the theoretical prediction of the B {yields} X{sub s}{gamma} branching ratio at NLL level is dominated by the charm mass renormalization scheme ambiguity. In this paper we calculate those NNLL terms which are related to the renormalization of m{sub c}, in order to get an estimate of the corresponding uncertainty at the NNLL level. We find that these terms significantly reduce (by typically a factor of two) the error on BR(B {yields} X{sub s}{gamma}) induced by the definition of m{sub c}. Taking into account the experimental accuracy of around 10% and the future prospects of the B factories, we conclude that a NNLL calculation would increase the sensitivity of the observable B {yields} X{sub s}{gamma} to possible new degrees of freedom beyond the SM significantly.

Asatrian, H.M.; /Yerevan Phys. Inst.; Greub, C.; /Bern U.; Hovhannisyan, A.; /Yerevan Phys. Inst.; Hurth, T.; /CERN /SLAC; Poghosyan, V.; /Yerevan Phys. Inst.

2005-06-20T23:59:59.000Z

420

Expansion schemes for gravitational clustering: computing two-point and three-point functions  

E-Print Network [OSTI]

We describe various expansion schemes that can be used to study gravitational clustering. Obtained from the equations of motion or their path-integral formulation, they provide several perturbative expansions that are organized in different fashion or involve different partial resummations. We focus on the two-point and three-point correlation functions, but these methods also apply to all higher-order correlation and response functions. We present the general formalism, which holds for the gravitational dynamics as well as for similar models, such as the Zeldovich dynamics, that obey similar hydrodynamical equations of motion with a quadratic nonlinearity. We give our explicit analytical results up to one-loop order for the simpler Zeldovich dynamics. For the gravitational dynamics, we compare our one-loop numerical results with numerical simulations. We check that the standard perturbation theory is recovered from the path integral by expanding over Feynman's diagrams. However, the latter expansion is organized in a different fashion and it contains some UV divergences that cancel out as we sum all diagrams of a given order. Resummation schemes modify the scaling of tree and one-loop diagrams, which exhibit the same scaling over the linear power spectrum (contrary to the standard expansion). However, they do not significantly improve over standard perturbation theory for the bispectrum, unless one uses accurate two-point functions (e.g. a fit to the nonlinear power spectrum from simulations). Extending the range of validity to smaller scales, to reach the range described by phenomenological models, seems to require at least two-loop diagrams.

P. Valageas

2008-10-24T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Stable water isotope simulation by current land-surface schemes:Results of IPILPS phase 1  

SciTech Connect (OSTI)

Phase 1 of isotopes in the Project for Intercomparison of Land-surface Parameterization Schemes (iPILPS) compares the simulation of two stable water isotopologues ({sup 1}H{sub 2} {sup 18}O and {sup 1}H{sup 2}H{sup 16}O) at the land-atmosphere interface. The simulations are off-line, with forcing from an isotopically enabled regional model for three locations selected to offer contrasting climates and ecotypes: an evergreen tropical forest, a sclerophyll eucalypt forest and a mixed deciduous wood. Here we report on the experimental framework, the quality control undertaken on the simulation results and the method of intercomparisons employed. The small number of available isotopically-enabled land-surface schemes (ILSSs) limits the drawing of strong conclusions but, despite this, there is shown to be benefit in undertaking this type of isotopic intercomparison. Although validation of isotopic simulations at the land surface must await more, and much more complete, observational campaigns, we find that the empirically-based Craig-Gordon parameterization (of isotopic fractionation during evaporation) gives adequately realistic isotopic simulations when incorporated in a wide range of land-surface codes. By introducing two new tools for understanding isotopic variability from the land surface, the Isotope Transfer Function and the iPILPS plot, we show that different hydrological parameterizations cause very different isotopic responses. We show that ILSS-simulated isotopic equilibrium is independent of the total water and energy budget (with respect to both equilibration time and state), but interestingly the partitioning of available energy and water is a function of the models' complexity.

Henderson-Sellers, A.; Fischer, M.; Aleinov, I.; McGuffie, K.; Riley, W.J.; Schmidt, G.A.; Sturm, K.; Yoshimura, K.; Irannejad, P.

2005-10-31T23:59:59.000Z

422

High-Dose-Rate Brachytherapy Boost for Prostate Cancer: Comparison of Two Different Fractionation Schemes  

SciTech Connect (OSTI)

Purpose: This is a retrospective study comparing our experience with high-dose-rate (HDR) brachytherapy boost for prostate cancer, using two different fractionation schemes, 600 cGy Multiplication-Sign 3 fractions (patient group 1) and 950 cGy Multiplication-Sign 2 fractions (patient group 2). Methods and Materials: A total of 165 patients were treated for prostate cancer using external beam radiation therapy up to a dose of 45 Gy, followed by an HDR brachytherapy prostate radiation boost. Between July 1997 and Nov 1999, 64 patients were treated with an HDR boost of 600 cGy Multiplication-Sign 3 fractions; and between June 2000 and Nov 2005, 101 patients were treated with an HDR boost of 950 cGy Multiplication-Sign 2 fractions. All but 9 patients had at least one of the following risk features: pretreatment prostate-specific antigen (PSA) level >10, a Gleason score {>=}7, and/or clinical stage T3 disease. Results: Median follow-up was 105 months for group 1 and 43 months for group 2. Patients in group 2 had a greater number of high-risk features than group 1 (p = 0.02). Adjusted for comparable follow-up, there was no difference in biochemical no-evidence-of-disease (bNED) rate between the two fractionation scheme approaches, with 5-year Kaplan-Meier estimates of 93.5% in group 1 and 87.3% in group 2 (p = 0.19). The 5-year estimates of progression-free survival were 86% for group 1 and 83% for group 2 (p = 0.53). Among high-risk patients, there were no differences in bNED or PFS rate due to fractionation. Conclusions: Results were excellent for both groups. Adjusted for comparable follow-up, no differences were found between groups.

Kaprealian, Tania [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Weinberg, Vivian [Biostatistics and Computational Biology Core, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Speight, Joycelyn L. [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Department of Urology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Gottschalk, Alexander R. [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Roach, Mack [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Department of Urology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Shinohara, Katsuto [Department of Urology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Hsu, I.-Chow, E-mail: IHsu@radonc.ucsf.edu [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)

2012-01-01T23:59:59.000Z

423

Three-dimensional symmetry analysis of a direct-drive irradiation scheme for the laser megajoule facility  

SciTech Connect (OSTI)

The symmetry of a Direct-Drive (DD) irradiation scheme has been analyzed by means of three-dimensional (3D) simulations carried out by the code MULTI (R. Ramis et al., Comput. Phys. Commun. 49, 475 (1988)) that includes hydrodynamics, heat transport, and 3D laser ray-tracing. The implosion phase of a target irradiated by the Laser Megajoule (LMJ) facility in the context of the Shock Ignition scheme has been considered. The LMJ facility has been designed for Indirect-Drive, and by this reason that the irradiation scheme must be modified when used for DD. Thus, to improve the implosion uniformity to acceptable levels, the beam centerlines should be realigned and the beam power balance should be adjusted. Several alternatives with different levels of complexity are presented and discussed.

Ramis, R., E-mail: rafael.ramis@upm.es [E.T.S.I. Aeronuticos, Universidad Politcnica de Madrid, P. Cardenal Cisneros 3, E-28040 Madrid (Spain); Temporal, M. [Centre de Mathmatiques et de Leurs Applications, ENS Cachan and CNRS, 61 Av. du President Wilson, F-94235 Cachan Cedex (France); Canaud, B.; Brandon, V. [CEA, DIF, F-91297 Arpajon (France)

2014-08-15T23:59:59.000Z

424

Accelerating development of advanced inverters : evaluation of anti-islanding schemes with grid support functions and preliminary laboratory demonstration.  

SciTech Connect (OSTI)

The high penetration of utility interconnected photovoltaic (PV) systems is causing heightened concern over the effect that variable renewable generation will have on the electrical power system (EPS). These concerns have initiated the need to amend the utility interconnection standard to allow advanced inverter control functionalities that provide: (1) reactive power control for voltage support, (2) real power control for frequency support and (3) better tolerance of grid disturbances. These capabilities are aimed at minimizing the negative impact distributed PV systems may have on EPS voltage and frequency. Unfortunately, these advanced control functions may interfere with island detection schemes, and further development of advanced inverter functions requires a study of the effect of advanced functions on the efficacy of antiislanding schemes employed in industry. This report summarizes the analytical, simulation and experimental work to study interactions between advanced inverter functions and anti-islanding schemes being employed in distributed PV systems.

Neely, Jason C.; Gonzalez, Sigifredo; Ropp, Michael [Northern Plains Power Technologies, Brookings, SD] [Northern Plains Power Technologies, Brookings, SD; Schutz, Dustin [Northern Plains Power Technologies, Brookings, SD] [Northern Plains Power Technologies, Brookings, SD

2013-11-01T23:59:59.000Z

425

Ber analysis of iterative turbo encoded miso wireless communication system under implementation of q-ostbc scheme  

E-Print Network [OSTI]

In this paper, a comprehensive study has been made to evaluate the performance of a MISO wireless communication system. The 4-by-1 spatially multiplexed Turbo encoded system under investigation incorporates Quasi-orthogonal space-time block coding (Q-STBC) and ML signal detection schemes under QPSK, QAM, 16PSK and 16QAM digital modulations. The simulation results elucidate that a significant improvement of system performance is achieved in QAM modulation. The results are also indicative of noticeable system performance enhancement with increasing number of iterations in Turbo encoding/decoding scheme.

Kabir, M Hasnat; Zaman, Mustari; Rashed, Md Golam

2012-01-01T23:59:59.000Z

426

Content is Still King: The Effect of Neighbor Voting Schemes on Tag Relevance for Social Image Retrieval  

E-Print Network [OSTI]

Content is Still King: The Effect of Neighbor Voting Schemes on Tag Relevance for Social Image Retrieval Ba Quan Truong bqtruong@ntu.edu.sg Aixin Sun axsun@ntu.edu.sg Sourav S. Bhowmick assourav@ntuIR) experiences. One of the key issues in TagIR is to learn the effectiveness of a tag in de- scribing the visual

Aixin, Sun

427

Execution Schemes for Dynamically Reconfigurable Architectures T. Oppold, T. Schweizer, J. Oliveira Filho, S. Eisenhardt, T. Kuhn, W. Rosenstiel  

E-Print Network [OSTI]

is the scheduling of opera- tions which is usually done after high-level optimizations and transformations. From for coarse grained dynamically recon- figurable architectures and presents area, timing, and gate-level power a scheduled design, an execu- tion scheme can be derived defining for each operation the state and the context

Ould Ahmedou, Mohameden

428

A Comparison of Scale Estimation Schemes for a Quadrotor UAV based on Optical Flow and IMU Measurements  

E-Print Network [OSTI]

A Comparison of Scale Estimation Schemes for a Quadrotor UAV based on Optical Flow and IMU of autonomous UAV flight control, cameras are ubiquitously exploited as a cheap and effective onboard sensor linear velocity in the UAV body frame from direct measurement of the instantaneous (and non

Paris-Sud XI, Université de

429

FlexFetch: A History-Aware Scheme for I/O Energy Saving in Mobile Computing , Song Jiang2  

E-Print Network [OSTI]

FlexFetch: A History-Aware Scheme for I/O Energy Saving in Mobile Computing Feng Chen1 , Song Jiang, energy consumption caused by I/O operations becomes increasingly large. In a per- vasive computing be adaptively selected to achieve maximum energy reduction. To this end, we propose a profile-based I

Jiang, Song

430

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 16, NO. 12, DECEMBER 2007 2927 New Temporal Filtering Scheme to Reduce  

E-Print Network [OSTI]

to the discrete wavelet transform (DWT) were not very successful. If motion compensation is performed Abstract--Scalability is an important desirable property of video codecs. Wavelet-based motion-compensated temporal fil- tering provides the most powerful scheme for scalable video coding and provides high

Kondis, Lisimachos Paul

431

APPENDIX B CHEMICAL STORAGE SEGREGATION SCHEME Developing safe storage practices for laboratory chemicals is not always easy and often  

E-Print Network [OSTI]

/or ventilated gas storage cabinet. Methane, Acetylene, Hydrogen Oxidizing and toxic compressed gases, oxidizing68 APPENDIX B ­ CHEMICAL STORAGE SEGREGATION SCHEME Developing safe storage practices. Your ability to develop a safe storage system will depend on your knowledge of chemicals or your

432

A new asymptotic preserving scheme based on micro-macro formulation for linear kinetic equations in the diffusion limit  

E-Print Network [OSTI]

of the particles is small, a macroscopic description--such as diffusion equation in neutron transport and radiative transport equations. It is based on a decomposition of the distribution function into equilibrium and non. transport equations, diffusion limit, asymptotic preserving schemes, stiff terms AMS subject classifications

Mieussens, Luc

433

Inclusion of a Drag Approach in the Town Energy Balance (TEB) Scheme: Offline 1D Evaluation in a Street Canyon  

E-Print Network [OSTI]

Inclusion of a Drag Approach in the Town Energy Balance (TEB) Scheme: Offline 1D Evaluation 2008) ABSTRACT The Town Energy Balance module bridges the micro- and mesoscale and simulates local-scale urban surface energy balance for use in mesoscale meteorological models. Previous offline evaluations

Ribes, Aurélien

434

A Novel Shifting Balance Theory-based Approach to Optimization of an Energy-Constrained Modulation Scheme for  

E-Print Network [OSTI]

A Novel Shifting Balance Theory-based Approach to Optimization of an Energy-Constrained Modulation is inspired by Wright's shifting balance theory (SBT) of evolution in population ge- netics. The total energy Abstract-- This paper presents a new approach to optimiza- tion of an energy-constrained modulation scheme

Arslan, Tughrul

435

PowerSleep: A Smart Power-Saving Scheme with Sleep for Servers under Response Time Constraint  

E-Print Network [OSTI]

the cost of the power delivery subsystems and the cooling facility, the electricity cost is significant power consumption by 50100% [14]. Given the fact that average server utilization is only 2030PowerSleep: A Smart Power-Saving Scheme with Sleep for Servers under Response Time Constraint

Wang, Shengquan

436

The many-body problem A solution: DFT HK theorems KS scheme Summary Key concepts in Density Functional Theory (I)  

E-Print Network [OSTI]

's University, Belfast Key concepts in Density Functional Theory (I) Silvana Botti #12;The many-body problem concepts in Density Functional Theory (I) Silvana Botti #12;The many-body problem A solution: DFT HK theorems KS scheme Summary Outline 1 The many-body problem 2 A solution: Density Functional Theory 3

Botti, Silvana

437

A low diffusive Lagrange-remap scheme for the simulation of violent air-water free-surface flows.  

E-Print Network [OSTI]

. The evolution of the interfaces between phases and the consecutive complex dynamics need to be simulatedA low diffusive Lagrange-remap scheme for the simulation of violent air-water free-surface flows. Introduction Simulation of free surface flows knows an increasing interest as an essential predictive tool

Boyer, Edmond

438

Joint precoding vector and modulation and coding scheme recalculation for LTE-A multi-user MIMO  

E-Print Network [OSTI]

indicator (CQI), rank indicator (RI), and precoding matrix indicator (PMI). With this information, the BS and coding schemes (MCS) for each of them. On the other hand, the PMI shows the precoding vector preferred on the same time-frequency resources. The base station should recalculate the PMI and MCS in order to avoid

439

Evaluating the Performance of Planetary Boundary Layer and Cloud Microphysical Parameterization Schemes in Convection-Permitting Ensemble Forecasts using  

E-Print Network [OSTI]

uncertainty in how to include various processes (e.g., drop breakup and ice-phase categories 1 Evaluating the Performance of Planetary Boundary Layer and Cloud Microphysical Parameterization In this study, the ability of several cloud microphysical and planetary boundary layer parameterization schemes

Xue, Ming

440

1564 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 53, NO. 3, JUNE 2006 Schemes for Eliminating Transient-Width  

E-Print Network [OSTI]

1564 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 53, NO. 3, JUNE 2006 Schemes for Eliminating is the ability to bypass SEUs and SETs. This is crit- ical for performance, as it allows the system to proceed widths can be substantial (up to 2 ns), and so high-performance systems cannot afford to pause operations

Delgado-Frias, Jos G.

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Programs for the work with ENSDF format files: Evaluator's editor EVE, Viewer for the nuclear level schemes  

E-Print Network [OSTI]

Tools for the regular work of the nuclear data evaluator are presented: the context-dependent editor EVE and the viewer for the level schemes of nuclei from ENSDF datasets. These programs may be used by everybody who works with the Evaluated Nuclear Structure Data File and for the educational purposed.

G. I. Shulyak; A. A. Rodionov

2010-04-19T23:59:59.000Z

442

NET DEGREES OF FREEDOM OF RECENT SCHEMES FOR THE MISO BC WITH DELAYED CSIT AND FINITE COHERENCE TIME  

E-Print Network [OSTI]

NET DEGREES OF FREEDOM OF RECENT SCHEMES FOR THE MISO BC WITH DELAYED CSIT AND FINITE COHERENCE.slock@eurecom.fr ABSTRACT Most techniques designed for the multi-input single-output (MISO) Broadcast Channel (BC) require that in the underdetermined (overloaded) MISO BC with Nt transmit antennas and K = Nt +1 users Nt (sum) Degrees of Freedom (Do

Gesbert, David

443

A Fair Multi-Party Non-Repudiation Scheme for Storage Clouds Jun Feng, Yu Chen, Douglas H. Summerville  

E-Print Network [OSTI]

integrity. Our study revealed vulnerabilities in some commercial Cloud storage services. We analyzed. Given this large potential profit for such services, cloud storage service providers attempt to persuadeA Fair Multi-Party Non-Repudiation Scheme for Storage Clouds Jun Feng, Yu Chen, Douglas H

Chen, Yu

444

A Ferry-based Intrusion Detection Scheme for Sparsely Connected Ad Hoc Networks M. Chuah, P.Yang, J. Han  

E-Print Network [OSTI]

A Ferry-based Intrusion Detection Scheme for Sparsely Connected Ad Hoc Networks M. Chuah, P.Yang, J University Bethlehem, PA 18015 Abstract-- Several intrusion detection approaches have been proposed in sparse ad hoc networks. In this paper, we propose a ferry-based intrusion detection and mitigation (FBIDM

Chuah, Mooi-Choo "Mooi"

445

IEEE TRANSACTIONS ON SMART GRID, VOL. 2, NO. 4, DECEMBER 2011 675 A Lightweight Message Authentication Scheme for  

E-Print Network [OSTI]

IEEE TRANSACTIONS ON SMART GRID, VOL. 2, NO. 4, DECEMBER 2011 675 A Lightweight Message Authentication Scheme for Smart Grid Communications Mostafa M. Fouda, Member, IEEE, Zubair Md. Fadlullah, Member Abstract--Smart grid (SG) communication has recently received significant attentions to facilitate

Shen, Xuemin "Sherman"

446

716 IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 29, NO. 4, APRIL 2011 Opportunistic Spectrum Sharing Schemes for  

E-Print Network [OSTI]

Spectrum Sharing Schemes for CDMA-Based Uplink MAC in Cognitive Radio Networks Xi Zhang, Senior Member in which a set of secondary users (SUs) opportunistically utilize the wireless spectrum licensed spectrum which is licensed to the PUs while stringently limiting the interference to the PUs. Also

Zhang, Xi

447

0-7803-7016-3/01/$10.00 2001 IEEE A Randomized Web-Cache Replacement Scheme  

E-Print Network [OSTI]

0-7803-7016-3/01/$10.00 ©2001 IEEE A Randomized Web-Cache Replacement Scheme Konstantinos Psounis@isl.stanford.edu Abstract-- The problem of document replacement in web caches has received much attention in recent research, and it has been shown that the eviction rule "replace the least recently used document" performs poorly

Prabhakar, Balaji

448

A Game Theoretic Radio Access Network Selection scheme in a 4G mobile environment supporting capacity planning  

E-Print Network [OSTI]

A Game Theoretic Radio Access Network Selection scheme in a 4G mobile environment supporting of diverse technologies. Fourth Generation (4G) of mobile networks is envisioned as a common, flexible is currently a solution of an all-IP network layer, i.e. there is a common core network but different access

Pitsillides, Andreas

449

A SECOND-ORDER WELL-BALANCED POSITIVITY PRESERVING CENTRAL-UPWIND SCHEME FOR THE SAINT-VENANT SYSTEM  

E-Print Network [OSTI]

computations will simply break down since the eigen-values of the Jacobian of (1.1) are u± gh (the problem-dimensional examples. Key words. Hyperbolic systems of conservation and balance laws, semi-discrete central of a reliable scheme for (1.1) is the positivity preserving property: all computed values of the fluid depth h

Petrova, Guergana

450

DQE of wireless digital detectors: Comparative performance with differing filtration schemes  

SciTech Connect (OSTI)

Purpose: Wireless flat panel detectors are gaining increased usage in portable medical imaging. Two such detectors were evaluated and compared with a conventional flat-panel detector using the formalism of the International Electrotechnical Commission (IEC 62220-1) for measuring modulation transfer function (MTF), normalized noise power spectrum (NNPS), and detective quantum efficiency (DQE) using two different filtration schemes.Methods: Raw images were acquired for three image receptors (DRX-1C and DRX-1, Carestream Health; Inc., Pixium 4600, Trixell) using a radiographic system with a well-characterized output (Philips Super80 CP, Philips Healthcare). Free in-air exposures were measured using a calibrated radiation meter (Unfors Mult-O-Meter Type 407, Unfors Instruments AB). Additional aluminum filtration and a new alternative combined copper-aluminum filtration were used to conform the x ray output to IEC-specified beam quality definitions RQA5 and RQA9. Using the IEC 62220-1 formalism, each detector was evaluated at X{sub N}/2, X{sub N}, and 2X{sub N}, where the normal exposure level to the detector surface (X{sub N}) was set to 8.73 ?Gy (1.0 mR). The prescribed edge test device was used to evaluate the MTF, while the NNPS was measured using uniform images. The DQE was then calculated from the MTF and NNPS and compared across detectors, exposures, and filtration schemes.Results: The three DR systems had largely comparable MTFs with DRX-1 demonstrating lower values above 1.0 cycles/mm. At each exposure, DRX-1C and Pixium detectors demonstrated better noise performance than that of DRX-1. Zero-frequency DQEs for DRX-1C, Pixium, and DRX-1 detectors were approximately 74%, 63%, and 38% for RQA5 and 50%, 42%, and 28% for RQA9, respectively.Conclusions: DRX-1C detector exhibited superior DQE performance compared to Pixium and DRX-1. In terms of filtration, the alternative filtration was found to provide comparable performance in terms of rank ordering of different detectors with the added convenience of being less bulky for in-the-field measurements.

Samei, Ehsan [Carl E. Ravin Advanced Imaging Laboratories, Departments of Radiology, Biomedical Engineering, Physics, and Electrical and Computer Engineering, Medical Physics Graduate Program, Duke University Medical Center, Durham, North Carolina 27705 (United States)] [Carl E. Ravin Advanced Imaging Laboratories, Departments of Radiology, Biomedical Engineering, Physics, and Electrical and Computer Engineering, Medical Physics Graduate Program, Duke University Medical Center, Durham, North Carolina 27705 (United States); Murphy, Simon; Christianson, Olav [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States)] [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States)

2013-08-15T23:59:59.000Z

451

Engineering the bonding scheme in C-S-H: The iono-covalent framework  

SciTech Connect (OSTI)

On the basis of recent molecular simulation and experimental studies, we discuss two possible strategies for tuning the mechanical properties of cementitious materials by modifying the bonding scheme in the hydrates at molecular level. We focus the discussion on the calcium silicate hydrates (C-S-H). A first strategy would be based on the strengthening of the network of cohesion forces acting between the individual C-S-H lamellae or between their crystallites. Atomic scale simulations by ab initio, molecular dynamics and energy minimization techniques show that the iono-covalent forces between individual C-S-H layers or C-S-H layer stacks, separated by strongly localized calcium ions and water molecules, are orders of magnitude larger than the ionic correlation forces acting between C-S-H surfaces separated by nm- or multi-nm-thick layers of mobile water molecules and ions. The elastic properties derived from this iono-covalent bonding scheme are in good agreement with experimental values obtained by ultrasonic or statistical ('grid') nanoindentation techniques. The concept picture for C-S-H which follows is that of a crystalline semi-continuum, with dense domains ('crystallites' or 'particles') iono-covalently bonded to each other, possibly entangled also, and embedded as long as the mesoscale porosity is water-saturated in a relatively weak attractive stress field due to fluctuating electrostatic forces. Depending on the size, the aspect ratio, and the turbostratic order of the crystallites, and also the composition of the interstitial solution, the relative importance of each contribution could be modified. This provides the basis for a better control of properties such as early age or long term strength development for instance. In this respect, the microstructure-properties relationships in clay minerals provide interesting leads, pointing to the importance of bonding continuity rather than bond strength. A second strategy to tune the mechanical properties of cement systems, akin to a biomimetic approach, is to hybridize the hydrates by grafting organic moieties on the mineral lamellae. This can be achieved by controlled hydrolysis of organo-silane precursor mixtures or by performing the hydration of the anhydrous silicates in silanized polymer solutions. The outcome may be materials with improved fracture energy and larger strain at failure.

Pellenq, R.J.-M. [Centre de Recherche en Matiere Condensee et Nanosciences, CNRS, Campus de Luminy, 13288 Marseille cedex 09 (France); Lequeux, N. [Ecole Superieure de Physique et de Chimie Industrielles, Physico-Chimie des Polymeres et des Milieux Disperses, UMR 7615 CNRS-ESPCI-UPMC, 10 rue Vauquelin, 75231 Paris cedex 05 (France); Damme, H. van [Ecole Superieure de Physique et de Chimie Industrielles, Physico-Chimie des Polymeres et des Milieux Disperses, UMR 7615 CNRS-ESPCI-UPMC, 10 rue Vauquelin, 75231 Paris cedex 05 (France)], E-mail: henri.vandamme@espci.fr

2008-02-15T23:59:59.000Z

452

The DIS(chi) Scheme for Heavy Quark Production at Small x.  

E-Print Network [OSTI]

ar X iv :h ep -p h/ 06 05 32 1v 1 2 9 M ay 2 00 6 February 2, 2008 6:9 Proceedings Trim Size: 9in x 6in Cavendish-HEP-2006/12 THE DIS(?) SCHEME FOR HEAVY QUARK PRODUCTION AT SMALL X C. D. WHITE Cavendish Laboratory, J. J. Thomson Avenue... 10-4 Q2(GeV2) F 2 p (x ,Q 2 ) + 0 .25 (9- i) LL resummed NLO 0 0.5 1 1.5 2 2.5 3 3.5 4 1 10 10 2 10 3 x=510-4 x=6.3210-4 x=810-4 x=1.310-3 x=1.6110-3 x=210-3 x=3.210-3 x=510-3 x=810-3 H1 (1.02) ZEUS(1.004) NMC(0.996) LL resummed NLO Q2(GeV2...

White, C D

453

An improved lattice Boltzmann scheme for multiphase fluid with multi-range interactions  

SciTech Connect (OSTI)

Modeling of fluids with liquid to gas phase transition has become important for understanding many environmental or industrial processes. Such simulations need new techniques, because traditional solvers are often limited. The Lattice Boltzmann Model (LBM) allows simulate complex fluids, because its mesoscopic nature gives possibility to incorporate additional physics in comparison to usual methods. In this work, an improved lattice Boltzmann model for phase transition flow will be introduced. First, the state of art for Shan and Chen (SC) type of LBM will be reminded. Then, link to real thermodynamics will be established with Maxwell equal areas construction. Convergence to isothermal liquid vapor equilibrium will be shown and discussed. Inclusion of an equation of state for real fluid and better incorporation of force term is presented. Multi-range interactions have been used for SC model, but it hasn't been yet applied to real fluid with non-ideal equation of state. In this work, we evaluate this model when it is applied to real liquid-vapor equilibrium. We show that important differences are found for evaluation of gas density. In order to recover thermodynamic consistency, we use a new scheme for calculation of force term, which is a combination of multi range model and numerical weighting used by Gong and Cheng. We show the superiority of our new model by studying convergence to equilibrium values over a large temperature range. We prove that spurious velocities remaining at equilibrium are decreased.

Maquignon, Nicolas; Duchateau, Julien; Roussel, Gilles; Rousselle, Franois; Renaud, Christophe [Laboratoire Informatique Signal et Image de la Cte d' Opale, 50 rue Ferdinand Buisson, 62100 Calais (France); Universit du Littoral Cte d'Opale, 1 place de l'Yser, 59140, Dunkerque (France); Association INNOCOLD, MREI 1, 145 (France)

2014-10-06T23:59:59.000Z

454

904 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 12, NO. 10, OCTOBER 2002 A New Compression Scheme for Color-Quantized Images  

E-Print Network [OSTI]

A New Compression Scheme for Color-Quantized Images Xin Chen, Sam Kwong, and Ju-fu Feng Abstract--An efficient compression scheme for color-quantized images based on progressive coding of color information has an image from two colors to all of the colors contained in the original image, i.e., a lossless recovery

Chen, Xin

455

Temperature Constrained Power Management Scheme for 3D MPSoC Arnica Aggarwal, Sumeet S. Kumar, Amir Zjajo, Rene van Leuken  

E-Print Network [OSTI]

support [2]. 3D integration is now emerging as an attrac tive solution towards sustaining the observedTemperature Constrained Power Management Scheme for 3D MPSoC Arnica Aggarwal, Sumeet S. Kumar, Amir.g.r.m.vanleuken@tudelft.nl Abstract This paper proposes a new temperature constrained power management scheme for 3D MPSo

Langendoen, Koen

456

Long-term evaluation of the Hydro-Thermodynamic Soil-Vegetation Scheme's frozen ground/permafrost component using observations at  

E-Print Network [OSTI]

Long-term evaluation of the Hydro-Thermodynamic Soil-Vegetation Scheme's frozen ground/permafrost component of the hydro-thermodynamic soil-vegetation scheme (HTSVS) was evaluated by means of permafrost computational time. Citation: Mo¨lders, N., and V. E. Romanovsky (2006), Long-term evaluation of the Hydro

Moelders, Nicole

457

93SOLA, 2014, Vol. 10, 93-97, doi:10.2151/sola.2014-019 The scheme developed by Nguyen and Chen (2011) is used  

E-Print Network [OSTI]

93SOLA, 2014, Vol. 10, 93-97, doi:10.2151/sola.2014-019 Abstract The scheme developed by Nguyen cyclone initializa- tion scheme and its impact on the Initial TC structure. SOLA, 10, 93-97, doi:10.2151/sola.2014-019). 1. Introduction Tropical cyclone initialization is one of the most challenging problems

Chen, Yi-Leng

2011-01-01T23:59:59.000Z

458

Les dterminants du prix du carbone sur le march europen des quotas Carbon price drivers in the EU Emissions Trading Scheme  

E-Print Network [OSTI]

in the EU Emissions Trading Scheme Emilie Alberola1 et Julien Chevallier2 Résumé: L'article examine le prix des quotas durant la première période (2005-2007) de l'European Union Emissions Trading Scheme (EU

Paris-Sud XI, Université de

459

Comment on ``A modified leapfrog scheme for shallow water equations'' by Wen-Yih Sun and Oliver M.T. Sun  

E-Print Network [OSTI]

Commentary Comment on ``A modified leapfrog scheme for shallow water equations'' by Wen-Yih Sun and Oliver M.T. Sun Paul D. Williams Department of Meteorology, University of Reading, UK a r t i c l e i n f integration of the shallow-water equa- tions using the leapfrog time-stepping scheme [Sun Wen-Yih, Sun Oliver

Williams, Paul

460

Impact of Construction Waste Disposal Charging Scheme on work practices at construction sites in Hong Kong  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer A significant reduction of construction waste was achieved at the first 3 years of CWDCS implementation. Black-Right-Pointing-Pointer However, the reduction cannot be sustained. Black-Right-Pointing-Pointer Implementation of the CWDCS has generated positive effects in waste reduction by all main trades. - Abstract: Waste management in the building industry in Hong Kong has become an important environmental issue. Particularly, an increasing amount of construction and demolition (C and D) waste is being disposed at landfill sites. In order to reduce waste generation and encourage reuse and recycling, the Hong Kong Government has implemented the Construction Waste Disposal Charging Scheme (CWDCS) to levy charges on C and D waste disposal to landfills. In order to provide information on the changes in reducing waste generation practice among construction participants in various work trades, a study was conducted after 3 years of implementation of the CWDCS via a structured questionnaire survey in the building industry in Hong Kong. The study result has revealed changes with work flows of the major trades as well as differentiating the levels of waste reduced. Three building projects in the public and private sectors were selected as case studies to demonstrate the changes in work flows and the reduction of waste achieved. The research findings reveal that a significant reduction of construction waste was achieved at the first 3 years (2006-2008) of CWDCS implementation. However, the reduction cannot be sustained. The major trades have been influenced to a certain extent by the implementation of the CWDCS. Slight improvement in waste management practices was observed, but reduction of construction waste in the wet-finishing and dry-finishing trades has undergone little improvement. Implementation of the CWDCS has not yet motivated subcontractors to change their methods of construction so as to reduce C and D waste.

Yu, Ann T.W., E-mail: bsannyu@polyu.edu.hk [Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong); Poon, C.S.; Wong, Agnes; Yip, Robin; Jaillon, Lara [Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong)

2013-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

78 PHYSICAL SCHEMES OF EXPERIMENTAL DEVICES WITH DISK EMG FOR FEASIBILITY STUDY OF THERMONUCLEAR IGNITION IN MAGO SYSTEM  

E-Print Network [OSTI]

The use of magnetic hydrodynamic compression system (MAGO/MTF) (1,2) is one of the approaches in handling the ignition problem. MAGO system consists of two main parts the preheating system for magnetized D-T plasma and a plasma compression system. To obtain heated magnetized plasma we use a special MAGO chamber (1) , which consists of two toroidal cells conjoined with a narrow annular nozzle. Magnetized plasma is accelerated in the nozzle to ~ 1000 km/s velocities and heated in generated collisionless shock waves. A further compression of plasma in the second cell is required to com up to ignition parameters. Scheme of quasi-spherical target connected to the multi-module DEMG with the radial-coaxial transmission line (TL) 1. Detonators 2. DEMG HE disk charges 3. Metal DEMG magnetic flux compression cavities 4. Explosive unit of DEMG disconnection from helical EMG (HEMG). The paper justifies principal parameters for some physical schemes of devices with

V. B. Yakubov

462

A positivity-preserving scheme for the simulation of streamer discharges in non-attaching and attaching gases  

E-Print Network [OSTI]

Assumed having axial symmetry, the streamer discharge is often described by a fluid model in cylindrical coordinate system, which consists of convection dominated (diffusion) equations with source terms, coupled with a Poisson's equation. Without additional care for a stricter CFL condition or special treatment to the negative source term, popular methods used in streamer discharge simulations, e.g., FEM-FCT, FVM, cannot ensure the positivity of the particle densities for the cases in attaching gases. By introducing the positivity-preserving limiter proposed by Zhang and Shu \\cite{ppl} and Strang operator splitting, this paper proposed a finite difference scheme with a provable positivity-preserving property in cylindrical coordinate system, for the numerical simulation of streamer discharges in non-attaching and attaching gases. Numerical examples in non-attaching gas (N$_2$) and attaching gas (SF$_6$) are given to illustrate the effectiveness of the scheme.

Zhuang, Chijie

2013-01-01T23:59:59.000Z

463

Finite Volume schemes on unstructured grids for non-local models: Application to the simulation of heat transport in plasmas  

SciTech Connect (OSTI)

In the so-called Spitzer-Haerm regime, equations of plasma physics reduce to a nonlinear parabolic equation for the electronic temperature. Coming back to the derivation of this limiting equation through hydrodynamic regime arguments, one is led to construct a hierarchy of models where the heat fluxes are defined through a non-local relation which can be reinterpreted as well by introducing coupled diffusion equations. We address the question of designing numerical methods to simulate these equations. The basic requirement for the scheme is to be asymptotically consistent with the Spitzer-Haerm regime. Furthermore, the constraints of physically realistic simulations make the use of unstructured meshes unavoidable. We develop a Finite Volume scheme, based on Vertex-Based discretization, which reaches these objectives. We discuss on numerical grounds the efficiency of the method, and the ability of the generalized models in capturing relevant phenomena missed by the asymptotic problem.

Goudon, Thierry, E-mail: thierry.goudon@inria.fr [Team COFFEE, INRIA Sophia Antipolis Mediterranee (France) [Team COFFEE, INRIA Sophia Antipolis Mediterranee (France); Labo. J.A. Dieudonne CNRS and Univ. Nice-Sophia Antipolis (UMR 7351), Parc Valrose, 06108 Nice cedex 02 (France); Parisot, Martin, E-mail: martin.parisot@gmail.com [Project-Team SIMPAF, INRIA Lille Nord Europe, Park Plazza, 40 avenue Halley, F-59650 Villeneuve d'Ascq cedex (France)] [Project-Team SIMPAF, INRIA Lille Nord Europe, Park Plazza, 40 avenue Halley, F-59650 Villeneuve d'Ascq cedex (France)

2012-10-15T23:59:59.000Z

464

First Investigations on the Energy Deposited in a D0 early separation scheme Dipole for the LHC upgrade  

E-Print Network [OSTI]

This note gives the first results of energy deposition calculation on a simplified model for an early scheme separation dipole D0, located at 3.5 m from the IP. The Monte Carlo code FLUKA version 2006.3 has been used for modelling the multi-particle interactions and energy transport. After a short introduction to particle interaction with matter and power deposition processes, the FLUKA modelling is described with bench marked power deposition calculation on the TAS, the absorber located in front of the triplet quadrupoles. The power deposition results for the D0 early scheme are then discussed in details, with the averaged and peak power density, and the variations of the total heat load in the dipole with the longitudinal position and with the aperture diameter.

Hoa, C

2007-01-01T23:59:59.000Z

465

Automated Flaw Detection Scheme For Cast Austenitic Stainless Steel Weld Specimens Using Hilbert Huang Transform Of Ultrasonic Phased Array Data  

SciTech Connect (OSTI)

The objective of this work is to develop processing algorithms to detect and localize the flaws using NDE ultrasonic data. Data was collected using cast austenitic stainless steel (CASS) weld specimens on-loan from the U.S. nuclear power industrys Pressurized Water Reactor Owners Group (PWROG) specimen set. Each specimen consists of a centrifugally cast stainless steel (CCSS) pipe section welded to a statically cast (SCSS) or wrought (WRSS) section. The paper presents a novel automated flaw detection and localization scheme using low frequency ultrasonic phased array inspection signals in the weld and heat affected zone of the base materials. The major steps of the overall scheme are preprocessing and region of interest (ROI) detection followed by the Hilbert Huang transform (HHT) of A-scans in the detected ROIs. HHT offers time-frequency-energy distribution for each ROI. The accumulation of energy in a particular frequency band is used as a classification feature for the particular ROI.

Khan, T.; Majumdar, Shantanu; Udpa, L.; Ramuhalli, Pradeep; Crawford, Susan L.; Diaz, Aaron A.; Anderson, Michael T.

2012-01-01T23:59:59.000Z

466

Scheme for directly observing the non-commutativity of the position and the momentum operators with interference  

E-Print Network [OSTI]

Although non-commutativity of a certain set of quantum operators (e.g., creation/annihilation operators and Pauli spin operators) has been shown experimentally in recent years, the commu- tation relation for the position and the momentum operators has not been directly demonstrated to date. In this paper, we propose and analyze an experimental scheme for directly observing the non-commutativity of the position and the momentum operators using single-photon quantum in- terference. While the scheme is studied for the single-photon state as the input quantum state, the analysis applies equally to matter-wave interference, allowing a direct test of the position-momentum commutation relation with a massive particle.

Jong-Chan Lee; Yong-Su Kim; Young-Sik Ra; Hyang-Tag Lim; Yoon-Ho Kim

2012-07-10T23:59:59.000Z

467

A Novel Self-Calibration Scheme for 12-bit 50MS/s In-Seok Jung  

E-Print Network [OSTI]

A Novel Self-Calibration Scheme for 12-bit 50MS/s SAR ADC In-Seok Jung Department of Electrical@ece.neu.edu Abstract-- This paper presents a low-power 12-bit 50MS/s suc- cessive approximation register (SAR) analog-to-digital converter (ADC) using single input condition for Built-In Self Test (BIST) that uses a novel self-calibration

Ayers, Joseph

468

Implementation schemes in NMR of quantum processors and the Deutsch-Jozsa algorithm by using virtual spin representation  

SciTech Connect (OSTI)

Schemes of experimental realization of the main two-qubit processors for quantum computers and the Deutsch-Jozsa algorithm are derived in virtual spin representation. The results are applicable for every four quantum states allowing the required properties for quantum processor implementation if for qubit encoding, virtual spin representation is used. A four-dimensional Hilbert space of nuclear spin 3/2 is considered in detail for this aim.

Kessel, Alexander R.; Yakovleva, Natalia M. [Kazan Physical-Technical Institute, Russian Academy of Science, Sibirsky trakt 10/7, Kazan 420029 (Russian Federation)

2002-12-01T23:59:59.000Z

469

A consistent and conservative scheme for MHD flows with complex boundaries on an unstructured Cartesian adaptive system  

SciTech Connect (OSTI)

The numerical simulation of Magnetohydrodynamics (MHD) flows with complex boundaries has been a topic of great interest in the development of a fusion reactor blanket for the difficulty to accurately simulate the Hartmann layers and side layers along arbitrary geometries. An adaptive version of a consistent and conservative scheme has been developed for simulating the MHD flows. Besides, the present study forms the first attempt to apply the cut-cell approach for irregular wall-bounded MHD flows, which is more flexible and conveniently implemented under adaptive mesh refinement (AMR) technique. It employs a Volume-of-Fluid (VOF) approach to represent the fluidconducting wall interface that makes it possible to solve the fluidsolid coupling magnetic problems, emphasizing at how electric field solver is implemented when conductivity is discontinuous in cut-cell. For the irregular cut-cells, the conservative interpolation technique is applied to calculate the Lorentz force at cell-center. On the other hand, it will be shown how consistent and conservative scheme is implemented on fine/coarse mesh boundaries when using AMR technique. Then, the applied numerical schemes are validated by five test simulations and excellent agreement was obtained for all the cases considered, simultaneously showed good consistency and conservative properties.

Zhang, Jie; Ni, Ming-Jiu, E-mail: mjni@ucas.ac.cn

2014-01-01T23:59:59.000Z

470

A novel digitization scheme with FPGA-base TDC for beam loss monitors operating at cryogenic temperature  

SciTech Connect (OSTI)

Recycling integrators are common current-to-frequency converting circuits for measurements of low current such as that produced by Fermilab's cryogenic ionization chambers. In typical digitization/readout schemes, a counter is utilized to accumulate the number of pulses generated by the recycling integrator to adequately digitize the total charge. In order to calculate current with reasonable resolution (e.g., 7-8 bits), hundreds of pulses must be accumulated which corresponds to a long sampling period, i.e., a very low sampling rate. In our new scheme, an FPGA-based Time-to-Digital Convertor (TDC) is utilized to measure the time intervals between the pulses output from the recycling integrator. Using this method, a sample point of the current can be made with good resolution (>10 bits) for each pulse. This effectively increases the sampling rates by hundreds of times for the same recycling integrator front-end electronics. This scheme provides a fast response to the beams loss and is potentially suitable for accelerator protection applications. Moreover, the method is also self-zero-suppressed, i.e., it produces more data when the beam loss is high while it produces significantly less data when the beam loss is low.

Wu, Jinyuan; Warner, Arden; /Fermilab

2011-11-01T23:59:59.000Z

471

2D Riemann-Christoffel curvature tensor via a 3D space using a specialized permutation scheme  

E-Print Network [OSTI]

When a space in which Christoffel symbols of the second kind are symmetrical in lower indices exists, it makes for a supplement to the standard procedure when a 2D surface is normally induced from the geometry of the surrounding 3D space in which the surface is embedded. There it appears appropriate to use a scheme for straightforward permutation of indices of Gkij, when such a space would make this transformation possible, so as to obtain the components of the 2D Riemann-Christoffel tensor (here expressed in geodetic coordinates for an ellipsoid of revolution, of use in geophysics). By applying my scheme I find the corresponding indices in 2D and 3D supplement-spaces, and I compute components of the Riemann-Christoffel tensor. By operating over the elements of the projections alone, the all-known value of 1/MN for the Gaussian curvature on an ellipsoid of revolution is obtained. To further validate my scheme, I show that in such a 3D space the tangent vector to a PHI-curve for LAM=const1 would be parallel to...

Omerbashich, Mensur

2009-01-01T23:59:59.000Z

472

Impact of a modified convective scheme on the Madden-Julian Oscillation and El Nin~oSouthern Oscillation in a coupled climate  

E-Print Network [OSTI]

. Richard Peltier,2 and Guang Jun Zhang3 Received 9 May 2007; revised 6 July 2007; accepted 3 August 2007. Vettoretti, W. R. Peltier, and G. J. Zhang (2007), Impact of a modified convective scheme on the Madden

Peltier, W. Richard

473

Physical control oriented model of large scale refrigerators to synthesize advanced control schemes. Design, validation, and first control results  

SciTech Connect (OSTI)

In this paper, a physical method to obtain control-oriented dynamical models of large scale cryogenic refrigerators is proposed, in order to synthesize model-based advanced control schemes. These schemes aim to replace classical user experience designed approaches usually based on many independent PI controllers. This is particularly useful in the case where cryoplants are submitted to large pulsed thermal loads, expected to take place in the cryogenic cooling systems of future fusion reactors such as the International Thermonuclear Experimental Reactor (ITER) or the Japan Torus-60 Super Advanced Fusion Experiment (JT-60SA). Advanced control schemes lead to a better perturbation immunity and rejection, to offer a safer utilization of cryoplants. The paper gives details on how basic components used in the field of large scale helium refrigeration (especially those present on the 400W @1.8K helium test facility at CEA-Grenoble) are modeled and assembled to obtain the complete dynamic description of controllable subsystems of the refrigerator (controllable subsystems are namely the Joule-Thompson Cycle, the Brayton Cycle, the Liquid Nitrogen Precooling Unit and the Warm Compression Station). The complete 400W @1.8K (in the 400W @4.4K configuration) helium test facility model is then validated against experimental data and the optimal control of both the Joule-Thompson valve and the turbine valve is proposed, to stabilize the plant under highly variable thermals loads. This work is partially supported through the European Fusion Development Agreement (EFDA) Goal Oriented Training Program, task agreement WP10-GOT-GIRO.

Bonne, Franois; Bonnay, Patrick [INAC, SBT, UMR-E 9004 CEA/UJF-Grenoble, 17 rue des Martyrs, 38054 Grenoble (France); Alamir, Mazen [Gipsa-Lab, Control Systems Department, CNRS-University of Grenoble, 11, rue des Mathmatiques, BP 46, 38402 Saint Martin d'Hres (France)

2014-01-29T23:59:59.000Z

474

2D Riemann-Christoffel curvature tensor via a 3D space using a specialized permutation scheme  

E-Print Network [OSTI]

When a space in which Christoffel symbols of the second kind are symmetrical in lower indices exists, it makes for a supplement to the standard procedure when a 2D surface is normally induced from the geometry of the surrounding 3D space in which the surface is embedded. There it appears appropriate to use a scheme for straightforward permutation of indices of Gkij, when such a space would make this transformation possible, so as to obtain the components of the 2D Riemann-Christoffel tensor (here expressed in geodetic coordinates for an ellipsoid of revolution, of use in geophysics). By applying my scheme I find the corresponding indices in 2D and 3D supplement-spaces, and I compute components of the Riemann-Christoffel tensor. By operating over the elements of the projections alone, the all-known value of 1/MN for the Gaussian curvature on an ellipsoid of revolution is obtained. To further validate my scheme, I show that in such a 3D space the tangent vector to a PHI-curve for LAM=const1 would be parallel to a tangent vector to a PHI-curve for LAM=const2 on the surface of an ellipsoid of revolution. Surfaces parameterized by Gauss surface normal coordinates, such as the Earth, now can have the Riemann-Christopher curvature tensor computed in a straightforward fashion for the topographic surface hel(PHIel, LAMel) of the Earth, given Christoffel symbols for such a representation in terms of orthonormal functions on the ellipsoid of revolution.

Mensur Omerbashich

2009-10-11T23:59:59.000Z

475

Generalization of internal Density Functional Theory and Kohn-Sham scheme to multicomponent systems, and link with traditional DFT  

E-Print Network [OSTI]

We generalize the recently developped "internal" Density Functional Theory (DFT) and Kohn-Sham scheme to multicomponent systems. We obtain a general formalism, applicable for the description of multicomponent self-bound systems (as molecules where the nuclei are treated explicitely, atomic nuclei and mix of 3He and 4He droplets), where the fundamental translational symmetry has been treated correctly. The main difference with traditional DFT is the explicit inclusion of center-of-mass correlations in the functional. A large part of the paper is dedicated to the application to molecules, which permits among other to clarify the approximations that underly traditional DFT.

Jeremie Messud

2011-11-21T23:59:59.000Z

476

Characterizing the acoustic noise generated by hard disk drives and a scheme for detecting noisy hard drives  

E-Print Network [OSTI]

of the requirements for the degree of MASTER OF SCIENCE August 1992 Major Subject: Electrical Engineering s nah7 CHARACTERIZING THE ACOUSTIC NOISE GENERATED BY HARD DISK DRIVES AND A SCHEME FOR DETECTING NOISY HARD DRIVES A Thesis by SEUK BO KIM Approved... 48 48 49 52 53 55 APPENDIX A 58 VITA LIST OF TABLES TABLE Page I Disk Drive Sample Set 16 II Subjective Human Response: Original Noise 22 IH Leq Measured by MIC1 IV Leq Measured by ACC V Leq Grouping of Tv o Sensors 24 26 26 VI...

Kim, Seuk Bo

1992-01-01T23:59:59.000Z

477

Non-perturbative renormalization and running of Delta F=2 four-fermion operators in the SF scheme  

E-Print Network [OSTI]

We present preliminary results of a non-perturbative study of the scale-dependent renormalization constants of a complete basis of Delta F=2 parity-odd four-fermion operators that enter the computation of hadronic B-parameters within the Standard Model (SM) and beyond. We consider non-perturbatively O(a) improved Wilson fermions and our gauge configurations contain two flavors of massless sea quarks. The mixing pattern of these operators is the same as for a regularization that preserves chiral symmetry, in particular there is a "physical" mixing between some of the operators. The renormalization group running matrix is computed in the continuum limit for a family of Schrodinger Functional (SF) schemes through finite volume recursive techniques. We compute non-perturbatively the relation between the renormalization group invariant operators and their counterparts renormalized in the SF at a low energy scale, together with the non-perturbative matching matrix between the lattice regularized theory and the various SF schemes.

Mauro Papinutto; Carlos Pena; David Preti

2014-12-04T23:59:59.000Z

478

Size-extensivity-corrected multireference configuration interaction schemes to accurately predict bond dissociation energies of oxygenated hydrocarbons  

SciTech Connect (OSTI)

Oxygenated hydrocarbons play important roles in combustion science as renewable fuels and additives, but many details about their combustion chemistry remain poorly understood. Although many methods exist for computing accurate electronic energies of molecules at equilibrium geometries, a consistent description of entire combustion reaction potential energy surfaces (PESs) requires multireference correlated wavefunction theories. Here we use bond dissociation energies (BDEs) as a foundational metric to benchmark methods based on multireference configuration interaction (MRCI) for several classes of oxygenated compounds (alcohols, aldehydes, carboxylic acids, and methyl esters). We compare results from multireference singles and doubles configuration interaction to those utilizing a posteriori and a priori size-extensivity corrections, benchmarked against experiment and coupled cluster theory. We demonstrate that size-extensivity corrections are necessary for chemically accurate BDE predictions even in relatively small molecules and furnish examples of unphysical BDE predictions resulting from using too-small orbital active spaces. We also outline the specific challenges in using MRCI methods for carbonyl-containing compounds. The resulting complete basis set extrapolated, size-extensivity-corrected MRCI scheme produces BDEs generally accurate to within 1 kcal/mol, laying the foundation for this scheme's use on larger molecules and for more complex regions of combustion PESs.

Oyeyemi, Victor B. [Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 (United States)] [Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Krisiloff, David B. [Department of Chemistry, Princeton University, Princeton, New Jersey 08544 (United States)] [Department of Chemistry, Princeton University, Princeton, New Jersey 08544 (United States); Keith, John A.; Libisch, Florian [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 (United States)] [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Pavone, Michele [Department of Chemical Sciences, University of Napoli Federico II, Napoli 80120 (Italy)] [Department of Chemical Sciences, University of Napoli Federico II, Napoli 80120 (Italy); Carter, Emily A., E-mail: eac@princeton.edu [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544 (United States); Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544 (United States)

2014-01-28T23:59:59.000Z

479

The rigorous stochastic matrix multiplication scheme for the calculations of reduced equilibrium density matrices of open multilevel quantum systems  

SciTech Connect (OSTI)

Understanding the roles of the temporary and spatial structures of quantum functional noise in open multilevel quantum molecular systems attracts a lot of theoretical interests. I want to establish a rigorous and general framework for functional quantum noises from the constructive and computational perspectives, i.e., how to generate the random trajectories to reproduce the kernel and path ordering of the influence functional with effective Monte Carlo methods for arbitrary spectral densities. This construction approach aims to unify the existing stochastic models to rigorously describe the temporary and spatial structure of Gaussian quantum noises. In this paper, I review the Euclidean imaginary time influence functional and propose the stochastic matrix multiplication scheme to calculate reduced equilibrium density matrices (REDM). In addition, I review and discuss the Feynman-Vernon influence functional according to the Gaussian quadratic integral, particularly its imaginary part which is critical to the rigorous description of the quantum detailed balance. As a result, I establish the conditions under which the influence functional can be interpreted as the average of exponential functional operator over real-valued Gaussian processes for open multilevel quantum systems. I also show the difference between the local and nonlocal phonons within this framework. With the stochastic matrix multiplication scheme, I compare the normalized REDM with the Boltzmann equilibrium distribution for open multilevel quantum systems.

Chen, Xin, E-mail: xin.chen.nj@gmail.com [Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)] [Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2014-04-21T23:59:59.000Z

480

Evaluation of Counter-Based Dynamic Load Balancing Schemes for Massive Contingency Analysis on Over 10,000 Cores  

SciTech Connect (OSTI)

Contingency analysis studies are necessary to assess the impact of possible power system component failures. The results of the contingency analysis are used to ensure the grid reliability, and in power market operation for the feasibility test of market solutions. Currently, these studies are performed in real time based on the current operating conditions of the grid with a set of pre-selected contingency list, which might result in overlooking some critical contingencies caused by variable system status. To have a complete picture of a power grid, more contingencies need to be studied to improve grid reliability. High-performance computing techniques hold the promise of being able to perform the analysis for more contingency cases within a much shorter time frame. This paper evaluates the performance of counter-based dynamic load balancing schemes for a massive contingency analysis program on 10,000+ cores. One million N-2 contingency analysis cases with a Western Electricity Coordinating Council power grid model have been used to demonstrate the performance. The speedup of 3964 with 4096 cores and 7877 with 10240 cores are obtained. This paper reports the performance of the load balancing scheme with a single counter and two counters, describes disk I/O issues, and discusses other potential techniques for further improving the performance.

Chen, Yousu; Huang, Zhenyu; Rice, Mark J.

2012-12-27T23:59:59.000Z

Note: This page contains sample records for the topic "indonesia-gtz mini-hydropower schemes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

A Harmonic Kicker Scheme for the Circulator Cooler Ring in the Proposed Medium Energy Electron-Ion Collider  

SciTech Connect (OSTI)

The current electron cooler design for the proposed Medium Energy Electron-Ion collider (MEIC) at Jefferson Lab utilizes a circulator ring for reuse of the cooling electron bunch up to 100 times to cool the ion beams. This cooler requires a fast kicker system for injecting and extracting individual bunches in the circulator ring. Such a kicker must work at a high repetition rate, up to 7.5 to 75 MHz depending on the number of turns in the recirculator ring. It also must have a very short rise and fall time (of order of 1 ns) such that it will kick an individual bunch without disturbing the others in the ring. Both requirements are orders of magnitude beyond the present state-of-the-art as well as the goals of other on-going kicker R&D programs such as that for the ILC damping rings. In this paper we report a scheme of creating this fast, high repetition rate kicker by combining RF waveforms at multiple frequencies to create a kicker waveform that will, for example, kick every eleventh bunch while leaving the other ten unperturbed. We also present a possible implementation of this scheme as well as discuss its limitations.

Nissen, Edward W.; Hutton, Andrew M.; Kimber, Andrew J.

2013-06-01T23:59:59.000Z

482

Global Simulations of Ice nucleation and Ice Supersaturation with an Improved Cloud Scheme in the Community Atmosphere Model  

SciTech Connect (OSTI)

A process-based treatment of ice supersaturation and ice-nucleation is implemented in the National Center for Atmospheric Research (NCAR) Community Atmosphere Model (CAM). The new scheme is designed to allow (1) supersaturation with respect to ice, (2) ice nucleation by aerosol particles and (3) ice cloud cover consistent with ice microphysics. The scheme is implemented with a 4-class 2 moment microphysics code and is used to evaluate ice cloud nucleation mechanisms and supersaturation in CAM. The new model is able to reproduce field observations of ice mass and mixed phase cloud occurrence better than previous versions of the model. Simulations indicate heterogeneous freezing and contact nucleation on dust are both potentially important over remote areas of the Arctic. Cloud forcing and hence climate is sensitive to different formulations of the ice microphysics. Arctic radiative fluxes are sensitive to the parameterization of ice clouds. These results indicate that ice clouds are potentially an important part of understanding cloud forcing and potential cloud feedbacks, particularly in the Arctic.

Gettelman, A.; Liu, Xiaohong; Ghan, Steven J.; Morrison, H.; Park, Sungsu; Conley, Andrew; Klein, Stephen A.; Boyle, James; Mitchell, David; Li, J-L F.

2010-09-28T23:59:59.000Z

483

Reduced quantum dynamics with arbitrary bath spectral densities: Hierarchical equations of motion based on several different bath decomposition schemes  

SciTech Connect (OSTI)

We investigated applications of the hierarchical equation of motion (HEOM) method to perform high order perturbation calculations of reduced quantum dynamics for a harmonic bath with arbitrary spectral densities. Three different schemes are used to decompose the bath spectral density into analytical forms that are suitable to the HEOM treatment: (1) The multiple Lorentzian mode model that can be obtained by numerically fitting the model spectral density. (2) The combined Debye and oscillatory Debye modes model that can be constructed by fitting the corresponding classical bath correlation function. (3) A new method that uses undamped harmonic oscillator modes explicitly in the HEOM formalism. Methods to extract system-bath correlations were investigated for the above bath decomposition schemes. We also show that HEOM in the undamped harmonic oscillator modes can give detailed information on the partial Wigner transform of the total density operator. Theoretical analysis and numerical simulations of the spin-Boson dynamics and the absorption line shape of molecular dimers show that the HEOM formalism for high order perturbations can serve as an important tool in studying the quantum dissipative dynamics in the intermediate coupling regime.

Liu, Hao; Zhu, Lili; Bai, Shuming; Shi, Qiang, E-mail: qshi@iccas.ac.cn [Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100190 (China)] [Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100190 (China)

2014-04-07T23:59:59.000Z

484

An Energy Signature Scheme for Steam Trap Assessment and Flow Rate Estimation Using Pipe-Induced Acoustic Measurements  

SciTech Connect (OSTI)

The US Congress has passed legislation dictating that all government agencies establish a plan and process for improving energy efficiencies at their sites. In response to this legislation, Oak Ridge National Laboratory (ORNL) has recently conducted a pilot study to explore the deployment of a wireless sensor system for a real-time measurement-based energy efficiency optimization framework within the steam distribution system within the ORNL campus. We make assessments on the real-time status of the distribution system by observing the state measurements of acoustic sensors mounted on the steam pipes/traps/valves. In this paper, we describe a spectral-based energy signature scheme that interprets acoustic vibration sensor data to estimate steam flow rates and assess steam traps health status. Experimental results show that the energy signature scheme has the potential to identify different steam trap health status and it has sufficient sensitivity to estimate steam flow rate. Moreover, results indicate a nearly quadratic relationship over the test region between the overall energy signature factor and flow rate in the pipe. The analysis based on estimated steam flow and steam trap status helps generate alerts that enable operators and maintenance personnel to take remedial action. The goal is to achieve significant energy-saving in steam lines by monitoring and acting on leaking steam pipes/traps/valves.

Olama, Mohammed M [ORNL; Allgood, Glenn O [ORNL; Kuruganti, Phani Teja [ORNL; Lake, Joe E [ORNL

2012-01-01T23:59:59.000Z

485

A H-infinity Fault Detection and Diagnosis Scheme for Discrete Nonlinear System Using Output Probability Density Estimation  

SciTech Connect (OSTI)

In this paper, a H-infinity fault detection and diagnosis (FDD) scheme for a class of discrete nonlinear system fault using output probability density estimation is presented. Unlike classical FDD problems, the measured output of the system is viewed as a stochastic process and its square root probability density function (PDF) is modeled with B-spline functions, which leads to a deterministic space-time dynamic model including nonlinearities, uncertainties. A weighting mean value is given as an integral function of the square root PDF along space direction, which leads a function only about time and can be used to construct residual signal. Thus, the classical nonlinear filter approach can be used to detect and diagnose the fault in system. A feasible detection criterion is obtained at first, and a new H-infinity adaptive fault diagnosis algorithm is further investigated to estimate the fault. Simulation example is given to demonstrate the effectiveness of the proposed approaches.

Zhang Yumin; Lum, Kai-Yew [Temasek Laboratories, National University of Singapore, Singapore 117508 (Singapore); Wang Qingguo [Depa. Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore)

2009-03-05T23:59:59.000Z

486

MORA: an Energy-Aware Slack Reclamation Scheme for Scheduling Sporadic Real-Time Tasks upon Multiprocessor Platforms  

E-Print Network [OSTI]

In this paper, we address the global and preemptive energy-aware scheduling problem of sporadic constrained-deadline tasks on DVFS-identical multiprocessor platforms. We propose an online slack reclamation scheme which profits from the discrepancy between the worst- and actual-case execution time of the tasks by slowing down the speed of the processors in order to save energy. Our algorithm called MORA takes into account the application-specific consumption profile of the tasks. We demonstrate that MORA does not jeopardize the system schedulability and we show by performing simulations that it can save up to 32% of energy (in average) compared to execution without using any energy-aware algorithm.

Nelis, Vincent

2009-01-01T23:59:59.000Z

487

Annotating animal mitochondrial tRNAs: A new scoring scheme and an empirical evaluation of four methods  

SciTech Connect (OSTI)

Identification of transfer RNAs in animal mitochondrial genomes is important for many areas of genome analysis including phylogenetic reconstruction, understanding inheritance of disease, and identifying forensic materials. Animal mitochondrial tRNAs differ from the canonical tRNAs in both their secondary structure and level of conservation of nucleotide sequence and therefore, conventional tRNA or general RNA searching software cannot be used for identification and custom methods are required. Here we present the results of an experimental analysis of four different methods tested on a large dataset consisting of 5,720 tRNAs extracted from the entire set of complete animal mitochondrial genomes in GenBank. Methods were evaluated based on number of false negatives and false positives. Additionally, we present a new scoring scheme customized for animal mitochondrial tRNAs.

Wyman, Stacia K.; Boore, Jeffrey L.

2003-12-31T23:59:59.000Z

488

Preliminary safety analysis of Pb-Bi cooled 800 MWt modified CANDLE burn-up scheme based fast reactors  

SciTech Connect (OSTI)

Pb-Bi Cooled fast reactors with modified CANDLE burn-up scheme with 10 regions and 10 years cycle length has been investigated from neutronic aspects. In this study the safety aspect of such reactors have been investigated and discussed. Several condition of unprotected loss of flow (ULOF) and unprotected rod run-out transient over power (UTOP) have been simulated and the results show that the reactors excellent safety performance. At 80 seconds after unprotected loss of flow condition, the core flow rate drop to about 25% of its initial flow and slowly move toward its natural circulation level. The maximum fuel temperature can be managed below 1000C and the maximum cladding temperature can be managed below 700C. The dominant reactivity feedback is radial core expansion and Doppler effect, followed by coolant density effect and fuel axial expansion effect.

Su'ud, Zaki, E-mail: szaki@fi.itba.c.id [Nuclear Physics and Biophysics Research Group, Faculty of Mathematics and Natural Science, Bandung Institute of Technology (Ganesha 10 Bandung, Indonesia) (Indonesia); Sekimoto, H., E-mail: hsekimot@gmail.com [Research Lab. For Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo (Japan)

2014-09-30T23:59:59.000Z

489

A Correction Scheme for Thermal Conductivity Measurement Using the Comparative Cut-bar Technique Based on a 3D Numerical Simulation  

SciTech Connect (OSTI)

As an important factor affecting the accuracy of the thermal conductivity measurement, systematic (bias) error in the guarded comparative axial heat flow (cut-bar) method was mostly neglected by previous researches. This bias is due primarily to the thermal conductivity mismatch between sample and meter bars (reference), which is common for a sample of unknown thermal conductivity. A correction scheme, based on a finite element simulation of the measurement system, was proposed to reduce the magnitude of the overall measurement uncertainty. This scheme was experimentally validated by applying corrections on four types of sample measurements in which the specimen thermal conductivity is much smaller, slightly smaller, equal and much larger than that of the meter bar. As an alternative to the optimum guarding technique proposed before, the correction scheme can be used to minimize uncertainty contribution from the measurement system with non-optimal guarding conditions. It is especially necessary for large thermal conductivity mismatches between sample and meter bars.

Douglas W. Marshall; Changhu Xing; Charles Folsom; Colby Jensen; Heng Ban

2014-05-01T23:59:59.000Z

490

Development and experimental validation of a calculation scheme for nuclear heating evaluation in the core of the OSIRIS material testing reactor  

SciTech Connect (OSTI)

The control of the temperature in material samples irradiated in a material testing reactor requires the knowledge of the nuclear heating caused by the energy deposition by neutrons and photons interacting in the irradiation device structures. Thus, a neutron-photonic three-dimensional calculation scheme has been developed to evaluate the nuclear heating in experimental devices irradiated in the core of the OSIRIS MTR reactor (CEA/Saclay Center). The aim is to obtain a predictive tool for the nuclear heating estimation in irradiation devices. This calculation scheme is mainly based on the TRIPOLI-4 three-dimensional continuous-energy Monte Carlo transport code, developed by CEA (Saclay Center). An experimental validation has been carried out on the basis of nuclear heating measurements performed in the OSIRIS core. After an overview of the experimental devices irradiated in the OSIRIS reactor, we present the calculation scheme and the first results of the experimental validation. (authors)

Malouch, F. [Saclay Center CEA, DEN/DANS/DM2S/SERMA, F-91191 Gif-sur-Yvette Cedex (France)

2011-07-01T23:59:59.000Z

491

Two-phase flow with mass density contrast: Stable schemes for a thermodynamic consistent and frame-indifferent diffuse-interface model  

SciTech Connect (OSTI)

In this paper, we present a numerical scheme for the diffuse-interface model in [3] for two-phase flow of immiscible, incompressible fluids. As that model is in particular consistent with thermodynamics, energy estimates are expected to carry over to the discrete setting. By a subtle discretization of the convective coupling with the flux of the phase-field in the momentum equation, we prove discrete consistency with thermodynamics. Numerical experiments in two spatial dimensions ranging from RayleighTaylor instability to a comparison with previous modeling approaches indicate the full practicality of our scheme and enable a first validation of the new modeling approach in [3].

Grn, G., E-mail: gruen@am.uni-erlangen.de; Klingbeil, F.

2014-01-15T23:59:59.000Z

492

Preprint version 2013 IEEE/RSJ International Conference on Intelligent Robots and Systems, Tokyo, Japan A Comparison of Scale Estimation Schemes for a Quadrotor UAV  

E-Print Network [OSTI]

, Japan A Comparison of Scale Estimation Schemes for a Quadrotor UAV based on Optical Flow and IMU of autonomous UAV flight control, cameras are ubiquitously exploited as a cheap and effective onboard sensor linear velocity in the UAV body frame from direct measurement of the instantaneous (and non

493

A majorfeature ofthe VAX-lI is its large virtual address space. This trace-driven simulation scheme evaluates address translation  

E-Print Network [OSTI]

A majorfeature ofthe VAX-lI is its large virtual address space. This trace-driven simulation scheme evaluates address translation hardware that supports thisfeature cost-effectively. Design Trade-Offs in VAX- dress space was a primary goal of VAX architects. (Over- views of VAX architecture are given

Satyanarayanan, Mahadev "Satya"

494

BiN: A Buffer-in-NUCA Scheme for Accelerator-Rich CMPs As the number of on-chip accelerators grows rapidly to improve  

E-Print Network [OSTI]

BiN: A Buffer-in-NUCA Scheme for Accelerator-Rich CMPs ABSTRACT As the number of on-chip accelerators grows rapidly to improve power-efficiency, the buffer size required by accelerators drastically increases. Existing solutions allow the accelerators to share a common pool of buffers or/and allocate

Cong, Jason "Jingsheng"

495

IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS, VOL. 1, NO. 3, SEPTEMBER 2011 289 PowerSleep: A Smart Power-Saving Scheme With  

E-Print Network [OSTI]

that the electricity costs $0.074 per kWh. Even without considering the cost of the power delivery subsystems 289 PowerSleep: A Smart Power-Saving Scheme With Sleep for Servers Under Response Time Constraint Shengquan Wang, Jun Liu, Jian-Jia Chen, and Xue Liu Abstract--Reducing the power consumption while

Wang, Shengquan

496

New Pellet Injection Schemes on DIII-D* S. K. Combs, L. R. Baylor, C. R. Foust, and T. C. Jernigan  

E-Print Network [OSTI]

New Pellet Injection Schemes on DIII-D* S. K. Combs, L. R. Baylor, C. R. Foust, and T. C. Jernigan Energy Research Corp. Abstract--The pellet system on DIII-D has been modified for injection of deuterium pellets from two vertical ports and two inner wall locations on the magnetic high-field side (HFS

497

SUBMITTED TO IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION, JANUARY 2001; REVISED MAY 2001, AND AUG 2001 1 A feedback control scheme for reversing a truck  

E-Print Network [OSTI]

SUBMITTED TO IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION, JANUARY 2001; REVISED MAY 2001, AND AUG 2001 1 A feedback control scheme for reversing a truck and trailer vehicle Claudio Alta#12;ni, Alberto the parts of the multibody vehicle, sometimes it is necessary to drive forward to enter in a speci#12;c

Altafini, Claudio

498

Low Power IC Design Seminar, 19 January 2001, London, UK. LOW POWER SYSTEM ON CHIP IMPLEMENTATION SCHEME OF DIGITAL FILTERING CORES  

E-Print Network [OSTI]

applications. Power saving features of the scheme are two fold. The first due to the utilisation of a macrocomponent . a control function which schedules the different components. #12; Low Power IC Design Seminar, 19 January, Lattice) or Fast Fourier Transform (FFT) modules, similar components can be identified. Due to the demand

Arslan, Tughrul

499

Low Power IC Design Seminar, 19 January 2001, London, UK. LOW POWER SYSTEM ON CHIP IMPLEMENTATION SCHEME OF DIGITAL FILTERING CORES  

E-Print Network [OSTI]

applications. Power saving features of the scheme are two fold. The first due to the utilisation of a macro-component a control function which schedules the different components. #12;Low Power IC Design Seminar, 19 January, Lattice) or Fast Fourier Transform (FFT) modules, similar components can be identified. Due to the demand

Arslan, Tughrul

500

A Hermite cubic collocation scheme for plane strain hydraulic fractures Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z2  

E-Print Network [OSTI]

A Hermite cubic collocation scheme for plane strain hydraulic fractures A. Peirce Department Accepted 13 February 2010 Available online xxxx Keywords: Hydraulic fractures Integro-partial differential of a hydraulic fracture in a state of plane strain. Special blended cubic Hermite-power­law basis functions

Peirce, Anthony