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1

Indonesia-GTZ Mini-Hydropower Schemes for Sustainable Economic Development  

Open Energy Info (EERE)

Indonesia-GTZ Mini-Hydropower Schemes for Sustainable Economic Development Indonesia-GTZ Mini-Hydropower Schemes for Sustainable Economic Development Jump to: navigation, search Logo: Indonesia-GTZ Mini-Hydropower Schemes for Sustainable Economic Development Name Indonesia-GTZ Mini-Hydropower Schemes for Sustainable Economic Development Agency/Company /Organization Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH Partner on behalf of Bundesministerium für Wirtschaftliche Zusammenarbeit und Entwicklung (BMZ); Directorate General for International Cooperation (DGIS Niederlande) Sector Energy Topics Background analysis Website http://www.gtz.de/en/themen/16 Program Start 1999 Program End 2008 Country Indonesia UN Region South-Eastern Asia References Mini-Hydropower Schemes for Sustainable Economic Development[1]

2

Indonesia-GTZ Emissions Reductions in Urban Transport | Open Energy  

Open Energy Info (EERE)

Reductions in Urban Transport Reductions in Urban Transport Jump to: navigation, search Logo: Indonesia-GTZ Emissions Reductions in Urban Transport Name Indonesia-GTZ Emissions Reductions in Urban Transport Agency/Company /Organization GTZ Partner Ministry of Transportation Sector Energy Focus Area Transportation Topics Background analysis Website http://www.gtz.de/en/themen/um Program Start 2008 Program End 2012 Country Indonesia UN Region South-Eastern Asia References GTZ Transport & Climate Change Website[1] GTZ is working with Indonesia on this program with the following objective: "Indonesian cities increasingly plan and implement measures for a transport system that is energy efficient as well as environmentally and climate friendly." Background of the project is the absence of a national policy on

3

Scottish Hydroelectric Schemes  

Science Journals Connector (OSTI)

... completed his study of the report into the Enquiry into the Fado-Fionn and Laidon hydroelectric schemes. The report concluded that neither scheme was needed, at least up to 1975 ...

1965-12-18T23:59:59.000Z

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

Electric Motor Management Scheme  

Science Journals Connector (OSTI)

The paper explores traditional repair situations and draws a comparison with a structured scheme, which commences with an audit of all stock and plant motors held by a typical user. A nominated repairer is sel...

Richard Blandford

2000-01-01T23:59:59.000Z

6

New LNG process scheme  

SciTech Connect (OSTI)

A new LNG cycle has been developed for base load liquefaction facilities. This new design offers a different technical and economical solution comparing in efficiency with the classical technologies. The new LNG scheme could offer attractive business opportunities to oil and gas companies that are trying to find paths to monetize gas sources more effectively; particularly for remote or offshore locations where smaller scale LNG facilities might be applicable. This design offers also an alternative route to classic LNG projects, as well as alternative fuel sources. Conceived to offer simplicity and access to industry standard equipment, This design is a hybrid result of combining a standard refrigeration system and turboexpander technology.

Foglietta, J.H.

1999-07-01T23:59:59.000Z

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

New Scheme of Quantum Teleportation  

E-Print Network [OSTI]

A new scheme for quantum teleportation is presented, in which the complete teleportation can be occurred even when an entangled state between Alice and Bob is not maximal.

A. Kossakowski; M. Ohya

2005-08-08T23:59:59.000Z

9

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

10

Lattice Boltzmann schemes without coordinates  

Science Journals Connector (OSTI)

...P. Boon and P. V. Coveney Lattice Boltzmann schemes without coordinates...developments extending the scope of the lattice Boltzmann method to unstructured (coordinateless...multi-scale applications. lattice Boltzmann method|irregular grids|computational...

2004-01-01T23:59:59.000Z

11

European Research Council ERC Grant Schemes  

E-Print Network [OSTI]

European Research Council ERC Grant Schemes Guide for Applicants 31 January 2007 The Guide page on http://cordis.europa.eu European Commission FP7 Specific Programme IDEAS #12;- 2/53 ERC Grant?........................................................................................................... 5 2. ERC Grant Schemes

Scholl, Anthony J.

12

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.

13

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

14

European Research Council ERC Grant Schemes  

E-Print Network [OSTI]

European Research Council ERC Grant Schemes Guide for Applicants 12 December 2007 [This revised version includes details on the ERC Advanced Grant scheme, which is subject to a first call for proposals. The general principles and information on the ERC grant schemes have been adapted accordingly. Further

Scholl, Anthony J.

15

Sustainable Energy Scheme Mentor Job description  

E-Print Network [OSTI]

1 Sustainable Energy Scheme Mentor Job description Department: Student Administration and Registry and Outreach Team Job title: Engineering Scheme Mentor Responsible to: UK Student Recruitment and Outreach Team and agreement between the Sustainable Energy Scheme Mentor and the UK Student Recruitment and Outreach Team

Anderson, Jim

16

Enterprise Fellowship Scheme EFS | Open Energy Information  

Open Energy Info (EERE)

Sector: Services Product: General Financial & Legal Services ( Academic Research foundation ) References: Enterprise Fellowship Scheme (EFS)1 This article is a stub. You can...

17

A multidimensional upwind scheme for magnetohydrodynamics  

Science Journals Connector (OSTI)

......artificial dissipation at shocks. MHD| A multidimensional upwind scheme...dissipation at shocks. Key words: MHD. 1 INT RO DU CTIO N There are...explains the division of the shock diagram in Jeffreys & Taniuti (1964...multidimensional upwind scheme for MHD 269 1998 RAS, MNRAS 297, 265277......

S.A.E.G Falle; S.S Komissarov; P. Joarder

1998-06-11T23:59:59.000Z

18

New Zealand Heavy-Water Scheme  

Science Journals Connector (OSTI)

... has decided to withdraw from participation in the Wairakei Scheme. This scheme provided for utilizing geothermal steam for the generation of electric power and for the manufacture of heavy water, ... the heavy-water plant would be much higher than was originally estimated. A company, Geothermal Development, Ltd., was formed for this purpose, and this will be wound up ...

1956-02-04T23:59:59.000Z

19

Molecular subtyping scheme for Salmonella panama.  

Science Journals Connector (OSTI)

...Molecular subtyping scheme for Salmonella panama J Stanley N Baquar A Burnens Virus Reference...describe a genotyping scheme for Salmonella panama. Defined probes specific for the 16S...element IS200 were generated by PCR from S. panama and were used to probe genomic Southern...

J Stanley; N Baquar; A Burnens

1995-05-01T23:59:59.000Z

20

Multiple Point Schemes for Corank 1 Maps  

Science Journals Connector (OSTI)

......Multiple Point Schemes for Corank 1 Maps Washington Luiz Marar David Mond...MULTIPLE POINT SCHEMES FOR CORANK 1 MAPS WASHINGTON LUIZ MARAR AND DAVID...1). Finally, denote the map Cn "1+fc -> C*~m defined...g:(Cn -1+k ,0) *C\\gis G-invariant}. Then

Washington Luiz Marar; David Mond

1989-06-01T23:59:59.000Z

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.


21

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

22

Controlling Noise in Ensemble Data Assimilation Schemes  

Science Journals Connector (OSTI)

A variety of ad hoc procedures have been developed to prevent filter divergence in ensemble-based data assimilation schemes. These procedures are necessary to reduce the impacts of sampling errors in the background error covariance matrix derived ...

Malaquias Pea; Zoltan Toth; Mozheng Wei

2010-05-01T23:59:59.000Z

23

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

24

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

25

Building Energy Software Tools Directory: SIP Scheming  

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

SIP Scheming SIP Scheming Energy analysis and cost estimating software specifically designed for stressed skin insulating core (SSIC) panel producers; calculates results within a matter of minutes. SIP (Structural Insulated Panel) Scheming also analyzes conventional framing and frame panels, and can be used for residential or commercial building types. Keywords stressed skin insulating core panels Validation/Testing N/A Expertise Required Relatively little technical knowledge required; knowledge of ArchiCad, Excel and DOE-2 necessary to use export features. Users Beta test version available. Audience Manufacturers of stressed skin insulating core panels. Input Drawings input either by scanning or imported from a CAD program, or drawn directly using a basic set of drawing tools; construction of elements such

26

LINEAR LATTICE BOLTZMANN SCHEMES FOR PARAMETERS CHOICES AND ISOTROPY PROPERTIES  

E-Print Network [OSTI]

LINEAR LATTICE BOLTZMANN SCHEMES FOR ACOUSTIC: PARAMETERS CHOICES AND ISOTROPY PROPERTIES ADELINE parameters choi- ces for linear lattice Boltzmann schemes according to the definition of the isotropic order2Q9 scheme. Introduction Lattice Boltzmann schemes [7, 11, 8] are numerically very interesting be

Paris-Sud XI, Université de

27

Cost evaluations of the protected network layer packet redundancy scheme  

Science Journals Connector (OSTI)

Feature Issue on High Availability in Optical Networks The protected network layer packet redundancy scheme...

verby, H

2006-01-01T23:59:59.000Z

28

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

29

Adaptive Resource Management Schemes for Web Services  

E-Print Network [OSTI]

ADAPTIVE RESOURCE MANAGEMENT SCHEMES FOR WEB SERVICES A Dissertation by HEUNG KI LEE Submitted to the O?ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2009... Major Subject: Computer Science ADAPTIVE RESOURCE MANAGEMENT SCHEMES FOR WEB SERVICES A Dissertation by HEUNG KI LEE Submitted to the O?ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree of DOCTOR...

Lee, Heung Ki

2011-02-22T23:59:59.000Z

30

Abstract--A mesochronous pipeline scheme is described in this paper. In a conventional pipeline scheme each pipeline stage  

E-Print Network [OSTI]

Abstract-- A mesochronous pipeline scheme is described in this paper. In a conventional pipeline scheme each pipeline stage operates on only one data set at a time. In the mesochronous scheme, pipeline stages operate on multiple data sets simultaneously. The clock period in conventional pipeline scheme

Delgado-Frias, José G.

31

BRAZIL VISITING FELLOWSHIP SCHEME Application Form  

E-Print Network [OSTI]

BRAZIL VISITING FELLOWSHIP SCHEME Application Form APPLICATIONS SHOULD BE TYPEWRITTEN AND BOXES of attendance Qualifications awarded and class of Honours, etc. Principal Subject(s) taken #12;BRAZIL VISITING): Date(s) From To To Nature of work and Position held Name and address of employer #12;BRAZIL VISITING

Birmingham, University of

32

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

33

LATTICE BOLTZMANN SCHEMES WITH RELATIVE VELOCITIES  

E-Print Network [OSTI]

LATTICE BOLTZMANN SCHEMES WITH RELATIVE VELOCITIES FRAN?OIS DUBOIS, TONY FEVRIER, AND BENJAMIN GRAILLE Abstract. In this contribution, a new class of lattice Boltzmann schem- es is introduced is then performed to derive the equivalent equations up to third order accuracy. Introduction The lattice Boltzmann

Boyer, Edmond

34

European Research Council ERC Grant Schemes  

E-Print Network [OSTI]

1 European Research Council ERC Grant Schemes Guide for Applicants December 2008 The Guide ERC Advanced Grant Following the experience with previous calls, some adjustments and improvements are introduced and applicable with the 2009 call for ERC Advanced Grant proposals onwards (see part 3

De Cindio, Fiorella

35

European Research Council ERC Grant Schemes  

E-Print Network [OSTI]

1 European Research Council ERC Grant Schemes Guide for Applicants for the Advanced Grant 2010 Call are introduced and applicable for the 2010 call for ERC Advanced Grant proposals. As these adjustments have Grant. In addition, it provides a general overview on the ERC peer review evaluation process

De Cindio, Fiorella

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

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

38

Assessing the performance of the UK Emissions Trading Scheme  

Science Journals Connector (OSTI)

The UKs Climate Change Programme introduced an Emissions Trading Scheme (ETS) for greenhouse gases. Firms...

Stephen Smith; Joseph Swierzbinski

2007-05-01T23:59:59.000Z

39

Stable lattice Boltzmann schemes with a dual entropy approach  

E-Print Network [OSTI]

Stable lattice Boltzmann schemes with a dual entropy approach for monodimensional nonlinear waves of a lattice Boltzmann scheme. This method is expressed in terms of the dual of the mathematical entropy with D1Q3 lattice Boltzmann schemes for the Burgers equation. It conducts to the explicitation of three

Boyer, Edmond

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

Explicit and implicit finite difference schemes for fractional Cattaneo equation  

Science Journals Connector (OSTI)

In this paper, the numerical solution of fractional (non-integer)-order Cattaneo equation for describing anomalous diffusion has been investigated. Two finite difference schemes namely an explicit predictor-corrector and totally implicit schemes have ... Keywords: Convergence rate, Finite difference schemes, Fractional Cattaneo equation, Stability

H. R. Ghazizadeh; M. Maerefat; A. Azimi

2010-09-01T23:59:59.000Z

42

Instability in Leapfrog and ForwardBackward Schemes  

Science Journals Connector (OSTI)

This paper shows that in the linearized shallow-water equations, the numerical schemes can become weakly unstable for the 2?x wave in the C grid when the Courant number is 1 in the forwardbackward scheme and 0.5 in the leapfrog scheme because of ...

Wen-Yih Sun

2010-05-01T23:59:59.000Z

43

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

44

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

45

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

46

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

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

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

49

The upgraded scheme of Hefei Light Source  

SciTech Connect (OSTI)

To enhance the performance of Hefei Light Source, which was designed and constructed two decades ago, an upgrade project would be carried out in the near future. The detail upgrade scheme was described in this paper. Firstly, the magnet lattice of storage ring should be reconstructed with 4 DBA cells, whose advantages are lower beam emittance and more straight section available for insertion devices. Secondly, the beam diagnostics, main power supply, transverse and longitudinal multi-bunch feedback, beam control and manipulation system would be upgrade to improve the beam orbit stability. Finally, the injection system of storage ring and injector, which is composed of electron linac and beam transfer line, would be updated in order to assure smooth beam accumulation process under new low emittance lattice. With above improvement, it is hopeful to increase the brilliance of Hefei Light Source by two orders approximately. After three-year upgrade project, the performance of HLS would meet the demands of advanced SR users.

Li Weimin; Xu Hongliang; Wang Lin; Feng Guangyao; Zhang Shancai; Hao Hao [National Synchrotron Radiation Laboratory of University of Science and Technology of China, Anhui (China)

2010-06-23T23:59:59.000Z

50

An Optimized Adaptive Protection Scheme for Distribution Systems Penetrated with Distributed Generators  

Science Journals Connector (OSTI)

An intelligent adaptive protection scheme for distribution systems penetrated with distributed generators is proposed in this chapter. The scheme...

Ahmed H. Osman; Mohamed S. Hassan

2014-01-01T23:59:59.000Z

51

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

52

Novel adsorption distillation hybrid scheme for propane/propylene separation  

SciTech Connect (OSTI)

A novel adsorption-distillation hybrid scheme is proposed for propane/propylene separation. The suggested scheme has potential for saving up to [approximately]50% energy and [approximately]15-30% in capital costs as compared with current technology. The key concept of the proposed scheme is to separate olefins from alkanes by adsorption and then separate individual olefins and alkanes by simple distillation, thereby eliminating energy intensive and expensive olefin-alkane distillation. A conceptual flow schematic for the proposed hybrid scheme and potential savings are outlined.s

Kumar, R.; Golden, T.C.; White, T.R.; Rokicki, A. (Air Products an Chemicals, Inc., Allentown, PA (United States))

1992-12-01T23:59:59.000Z

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

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

Open Energy Info (EERE)

Website: dx.doi.org10.1007s12053-008-9024-8 Equivalent URI: cleanenergysolutions.orgcontentutility-energy-efficiency-schemes-sav Language: English Policies: "Financial...

55

Industrial Steam System Process-Control Schemes | Department...  

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

Steam System Process-Control Schemes (July 2003) More Documents & Publications Compressed Air Storage Strategies Save Energy Now in Your Steam Systems CIBO Energy Efficiency...

56

Perception-based audio watermarking scheme in the compressed bitstream  

Science Journals Connector (OSTI)

Abstract In this paper, a new perception-based watermarking scheme for MPEG-4 scalable to lossless (SLS) audio is proposed. Under the control of the psychoacoustic model, the significant part of integer modified discrete cosine transform (IntMDCT) coefficients are adaptively modified during MPEG-4 SLS audio compression taking robustness, imperceptibility and security into consideration. The chaotic watermark generated by chaos is simply embedded to ensure security. Moreover, the adaptive spread spectrum method is exploited to further tradeoff robustness and transparency of this scheme. Extensive experimental results confirm that the proposed scheme is robust against common signal processing attacks while the inaudibility of the scheme is preserved.

Baiying Lei; Ing Yann Soon

2014-01-01T23:59:59.000Z

57

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

58

Lattice Boltzmann scheme for two-dimensional magnetohydrodynamics  

Science Journals Connector (OSTI)

It is shown that the lattice Boltzmann equation arising from the basic lattice-gas scheme for Navier-Stokes equations can be extended in such a way as to include the effects of a two-dimensional magnetic field. This offers the possibility of developing new computational schemes for the efficient simulation of incompressible magnetohydrodynamic flows.

S. Succi; M. Vergassola; R. Benzi

1991-04-15T23:59:59.000Z

59

Quartic Parameters for Acoustic Applications of Lattice Boltzmann Scheme  

E-Print Network [OSTI]

Quartic Parameters for Acoustic Applications of Lattice Boltzmann Scheme Fran¸cois Dubois ab Abstract. With the Taylor expansion method, we show that it is possible to improve the lattice Boltzmann lattice Boltzmann scheme. Various numerical tests support the coherence of this approach. Keywords: Taylor

60

Stable lattice Boltzmann scheme for a moving Burgers shock wave  

E-Print Network [OSTI]

Stable lattice Boltzmann scheme for a moving Burgers shock wave Fran¸cois Dubois ab a Conservatoire functions for D1Q3 lattice Boltzmann simulations of the Burgers equation. When a particular convexity solutions of hyperbolic problems with the lattice Boltzmann scheme as described e.g. by Lallemand and Luo

Paris-Sud XI, Université de

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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


61

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

62

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

63

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

64

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

65

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

66

Second-order accurate monotone finite volume scheme for ...  

E-Print Network [OSTI]

Oct 16, 2012 ... Some of the results obtained will be extended to a two-dimensional Richards' equation. ... uncertainty quantification analysis, the standard FV schemes may produce ..... around the interface point x a and near the boundary x 2a and .... measure loss of monotonicity in each FV scheme is to identify the...

Oleksandr Misiats

2013-02-28T23:59:59.000Z

67

Alternative Schemes for Dynamic Secure VPN Deployment in UMTS  

Science Journals Connector (OSTI)

Three alternative schemes for secure Virtual Private Network (VPN) deployment over the Universal Mobile Telecommunication System (UMTS) are proposed and analyzed. The proposed schemes enable a mobile node to voluntarily establish an IPsec-based secure ... Keywords: IKE, IPsec, NAT, UMTS, VPN, mobile Internet, privacy, security

Christos Xenakis; Lazaros Merakos

2006-01-01T23:59:59.000Z

68

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

69

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

E-Print Network [OSTI]

11CHAPTER Dissecting Oxygenic Photosynthesis: The Evolution of the "Z"-Scheme for Thylakoid and two photosystems are involved in oxygenic photosynthesis. This is then followed by the discovery Drop in Photosynthesis; Two Light Reactions; Two Photosystems; Z-Scheme of Photosynthesis #12

Govindjee

70

Utility Energy Efficiency Schemes: Savings Obligations and Trading  

Open Energy Info (EERE)

Utility Energy Efficiency Schemes: Savings Obligations and Trading Utility Energy Efficiency Schemes: Savings Obligations and Trading **Subscription Required** Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Utility Energy Efficiency Schemes: Savings Obligations and Trading **Subscription Required** Focus Area: Energy Efficiency, - Utility Topics: Policy Impacts Website: dx.doi.org/10.1007/s12053-008-9024-8 Equivalent URI: cleanenergysolutions.org/content/utility-energy-efficiency-schemes-sav Language: English Policies: "Financial Incentives,Regulations" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. Regulations: Mandates/Targets This paper attempts to answer the following questions: What is new about the recent raft of white certificate energy efficiency schemes and is there

71

Testing Statistical Cloud Scheme Ideas in the GFDL Climate Model  

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

Testing Statistical Cloud Scheme Ideas in the GFDL Climate Model Testing Statistical Cloud Scheme Ideas in the GFDL Climate Model Klein, Stephen Lawrence Livermore National Laboratory Pincus, Robert NOAA-CIRES Climate Diagnostics Center Category: Modeling Statistical cloud schemes (or assumed probability distribution function cloud schemes) are attractive because they provide a way to implement horizontal sub-grid scale cloud heterogeneity in a self-consistent way between physical parameterizations of the a climate model, such as radiation and cloud microphysics. In this work, we will present results dealing with two aspects of our ongoing work towards the implementation of statistical cloud scheme ideas in the climate model of Geophysical Fluid Dynamics Laboratory. First, we will address the representation of cloud

72

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

73

Signature schemes and applications to cryptographic protocol design  

E-Print Network [OSTI]

Signature schemes are fundamental cryptographic primitives, useful as a stand-alone application, and as a building block in the design of secure protocols and other cryptographic objects. In this thesis, we study both the ...

Lysyanskaya, Anna

2002-01-01T23:59:59.000Z

74

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

2012-06-07T23:59:59.000Z

75

Chapman-Enskog Analysis of Finite Volume Lattice Boltzmann Schemes  

E-Print Network [OSTI]

In this paper, we provide a systematic analysis of some finite volume lattice Boltzmann schemes in two dimensions. A complete iteration cycle in time evolution of discretized distribution functions is formally divided into collision and propagation (streaming) steps. Considering mass and momentum conserving properties of the collision step, it becomes obvious that changes in the momentum of finite volume cells is just due to the propagation step. Details of the propagation step are discussed for different approximate schemes for the evaluation of fluxes at the boundaries of the finite volume cells. Moreover, a full Chapman-Enskog analysis is conducted allowing to recover the Navier-Stokes equation. As an important result of this analysis, the relation between the lattice Boltzmann relaxation time and the kinematic viscosity of the fluid is derived for each approximate flux evaluation scheme. In particular, it is found that the constant upwind scheme leads to a positive numerical viscosity while the central sc...

Siboni, Nima H; Varnik, Fathollah

2014-01-01T23:59:59.000Z

76

Lattice Boltzmann Scheme for Diffusion on Triangular Grids  

Science Journals Connector (OSTI)

In this paper we present a Lattice Boltzmann scheme for diffusion on it unstructured triangular ... At the end of the propagation step the lattice gas particles arrive exactly at neighbouring lattice sites, as is...

R. G. M. van der Sman

2003-01-01T23:59:59.000Z

77

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

78

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

79

A Unified Convection Scheme (UNICON). Part I: Formulation  

Science Journals Connector (OSTI)

The author develops a unified convection scheme (UNICON) that parameterizes relative (i.e., with respect to the grid-mean vertical flow) subgrid vertical transport by nonlocal asymmetric turbulent eddies. UNICON is a process-based model of subgrid ...

Sungsu Park

2014-11-01T23:59:59.000Z

80

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

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

A Unified Convection Scheme (UNICON). Part II: Simulation  

Science Journals Connector (OSTI)

A unified convection scheme (UNICON) is implemented into the Community Atmosphere Model, version 5 (CAM5), and tested in single-column and global simulations forced by observed sea surface temperature. Compared to CAM5, UNICON substantially ...

Sungsu Park

2014-11-01T23:59:59.000Z

82

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

83

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

84

Design and Analysis of Low Complexity Network Coding Schemes  

E-Print Network [OSTI]

of inequalities . . . . . . . . . . . . . . . 16 C. The Routing Rate Region in Ring Networks . . . . . . . . . . . 20 1. Algorithm for constructing a binary distance vector b for distance vector a for the case of line sessions . . . . . . 22 2. Proof... . . . . . . . . . . . . . . . . 50 b. Optimality of the network coding scheme . . . . . . . 57 C. Network Coding in Star Networks . . . . . . . . . . . . . . . . 59 1. Upper bounds on the achievable rates in star networks . . . 60 2. Network coding scheme for star networks...

Tabatabaei-Yazdi, Seyed

2012-02-20T23:59:59.000Z

85

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

86

The development of an objective weather typing scheme  

E-Print Network [OSTI]

THE DEVELOPMENT OF AN OBJECTIVE WEATHER TYPING SCHEME A Thesis by ROBERT DONALD LAFEBRE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1987 Major... Subject: Meteorology THE DEVELOPMENT OF AN OBJECTIVE WEATHER TYPING SCHEME A Thesis ROBERT DONALD LAFEBRE Approved as to style and content by: Dennis M. Driscoll (Chairman of Committee) Robert C. Runnels (Member) udolf J. Freund (M mber) James...

LaFebre, Robert Donald

2012-06-07T23:59:59.000Z

87

A new fractional interpolation-based smoothing scheme for variable structure control  

Science Journals Connector (OSTI)

A new fractional interpolation-based smoothing scheme is proposed for variable structure control. Comparing with the conventional fractional interpolation scheme, as well as other similar smoothing schemes such as the hyperbolic tangent and the exponential smoothing schemes, the new scheme achieves the designated tracking precision bound with an adequate and yet moderate gain. Comparing with the well known saturation scheme, the new scheme achieves a smoother control profile, and possesses extra flexibility in adjusting the equivalent control gain while retaining the same precision bound. Substantial comparisons are conducted to confirm the effectiveness of the proposed smoothing control scheme.

Jian-Xin Xu; Ya-Jun Pan

2012-01-01T23:59:59.000Z

88

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

89

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

90

EXPLICIT-IMPLICIT SCHEME FOR RELATIVISTIC RADIATION HYDRODYNAMICS  

SciTech Connect (OSTI)

We propose an explicit-implicit scheme for numerically solving special relativistic radiation hydrodynamic equations, which ensures a conservation of total energy and momentum (matter and radiation). In our scheme, zeroth and first moment equations of the radiation transfer equation are numerically solved without employing a flux-limited diffusion approximation. For an hyperbolic term, of which the timescale is the light crossing time when the flow velocity is comparable to the speed of light, is explicitly solved using an approximate Riemann solver. Source terms describing an exchange of energy and momentum between the matter and the radiation via the gas-radiation interaction are implicitly integrated using an iteration method. The implicit scheme allows us to relax the Courant-Friedrichs-Lewy condition in optically thick media, where heating/cooling and scattering timescales could be much shorter than the dynamical timescale. We show that our numerical code can pass test problems of one- and two-dimensional radiation energy transport, and one-dimensional radiation hydrodynamics. Our newly developed scheme could be useful for a number of relativistic astrophysical problems. We also discuss how to extend our explicit-implicit scheme to the relativistic radiation magnetohydrodynamics.

Takahashi, Hiroyuki R. [Center for Computational Astrophysics, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)] [Center for Computational Astrophysics, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Ohsuga, Ken; Tomida, Kengo [Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)] [Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Sekiguchi, Yuichiro [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)] [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan); Inoue, Tsuyoshi, E-mail: takahashi@cfca.jp [Department of Physics and Mathematics, Aoyama Gakuin University, Fuchinobe, Sagamihara 229-8558 (Japan)] [Department of Physics and Mathematics, Aoyama Gakuin University, Fuchinobe, Sagamihara 229-8558 (Japan)

2013-02-20T23:59:59.000Z

91

Energy Pyramids: Useful Concepts, Not More Pyramid Schemes | Department of  

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

Pyramids: Useful Concepts, Not More Pyramid Schemes Pyramids: Useful Concepts, Not More Pyramid Schemes Energy Pyramids: Useful Concepts, Not More Pyramid Schemes February 8, 2010 - 2:40pm Addthis John Lippert At a December holiday party, the host handed me a newspaper clipping and asked me what I thought of the energy pyramid mentioned in the article. I hadn't read the article, so I told him I would read it and get back to him. Of course, when I found time to look into it, I didn't have the article with me. So I decided to do a little research on energy pyramids on the internet. It turns out that I found several variations on the theme, including the one mentioned in the article handed to me by my friend and neighbor, Larry. The Energy Use Pyramid, featured in the Washington Post article Larry asked about, was designed by architects Peter Pfeiffer and Betsy del Monte. It's

92

Energy Supplier Obligations and White Certificate Schemes: Comparative  

Open Energy Info (EERE)

Energy Supplier Obligations and White Certificate Schemes: Comparative Energy 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 Obligations and White Certificate Schemes: Comparative Analysis of Results in the European Union Focus Area: Energy Efficiency Topics: Socio-Economic Website: eec.ucdavis.edu/ACEEE/2010/data/papers/2178.pdf Equivalent URI: cleanenergysolutions.org/content/energy-supplier-obligations-and-white Language: English Policies: "Regulations,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. Regulations: Mandates/Targets This paper examines the ways different European Union (EU) member states,

93

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

94

Realization schemes for quantum instruments in finite dimensions  

SciTech Connect (OSTI)

We present a general dilation scheme for quantum instruments with continuous outcome space in finite dimensions, in terms of a measurement on a finite-dimensional ancilla, described by a positive operator valued measure (POVM). The general result is then applied to a large class of instruments generated by operator frames, which contains group-covariant instruments as a particular case and allows one to construct dilation schemes based on a measurement on the ancilla followed by a conditional feed-forward operation on the output. In the case of tight operator frames, our construction generalizes quantum teleportation and telecloning, producing a whole family of generalized teleportation schemes in which the instrument is realized via a joint POVM at the sender combined with a conditional feed-forward operation at the receiver.

Chiribella, Giulio; Perinotti, Paolo [QUIT Group, Dipartimento di Fisica 'A. Volta', Universita' di Pavia, via Bassi 6, I-27100 Pavia (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Pavia (Italy); D'Ariano, Giacomo Mauro [QUIT Group, Dipartimento di Fisica 'A. Volta', Universita' di Pavia, via Bassi 6, I-27100 Pavia (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Pavia (Italy); Department of Electrical and Computer Engineering, Center for Photonic Communication and Computing, Northwestern University, Evanston, Illinois 60208 (United States)

2009-04-15T23:59:59.000Z

95

On triangular lattice Boltzmann schemes for scalar problems  

E-Print Network [OSTI]

We propose to extend the d'Humi\\'eres version of the lattice Boltzmann scheme to triangular meshes. We use Bravais lattices or more general lattices with the property that the degree of each internal vertex is supposed to be constant. On such meshes, it is possible to define the lattice Boltzmann scheme as a discrete particle method, without need of finite volume formulation or Delaunay-Voronoi hypothesis for the lattice. We test this idea for the heat equation and perform an asymptotic analysis with the Taylor expansion method for two schemes named D2T4 and D2T7. The results show a convergence up to second order accuracy and set new questions concerning a possible super-convergence.

Dubois, Franois

2014-01-01T23:59:59.000Z

96

Frictional Cooling Scheme for Use in a Muon Collider  

SciTech Connect (OSTI)

The Muon Group at the MPI for Physics, Munich is investigating frictional cooling as a fast muon-beam emittance reduction scheme for a muon collider. A new simulation package, CoolSim, based on Geant4 has been developed for the simulation of low-energy beam cooling. New physics processes for low energy muons and protons have been implemented in the Geant4 framework. The group's Frictional Cooling Demonstration experiment aims to verify the principle of the cooling scheme. For this purpose, a 10-cm-long cooling cell has been constructed to test simulation of the energy loss and scattering mechanisms at low energy. This paper contains an introduction to a muon-collider frictional cooling scheme and the status of the demonstration experiment.

Greenwald, Daniel; Caldwell, Allen [Max-Planck-Insitut fuer Physik, Foehringer Ring 6, 80805 Munich (Germany); Bao, Yu [Max-Planck-Insitut fuer Physik, Foehringer Ring 6, 80805 Munich (Germany); Institute of High Energy Physics, Chinese Academy of Sciences, Beijing (China)

2010-03-30T23:59:59.000Z

97

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

98

Power and Memory Efficient Hashing Schemes for Some Network Applications  

E-Print Network [OSTI]

and requires 1.8 times memory compared to TCAM-based and trie-based IP lookup schemes, respectively. In dissertation, a multi-tiered packet classifier has been proposed that saves at most 3.2 times power compared to the existing parallel packet classifier...

Yu, Heeyeol

2010-07-14T23:59:59.000Z

99

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

100

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

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

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

102

Comparison of coarsening schemes for multilevel graph partitioning  

E-Print Network [OSTI]

Comparison of coarsening schemes for multilevel graph partitioning C´edric Chevalier1 and Ilya Laboratory, Argonne, IL, USA, safro@mcs.anl.gov Abstract. Graph partitioning is a well-known optimization as a process of graph topology learning at different scales in order to generate a better approx- imation

Safro, Ilya

103

On thermodynamically consistent schemes for phase field equations  

E-Print Network [OSTI]

and at the phase change front. A somewhat different approach of Charach and Zemel [2] combines bal- ance equationsOn thermodynamically consistent schemes for phase field equations C. Charach and P. C. Fife thermodynamics. The principal applications are to the solidification of a pure material and of a binary alloy

Fife, Paul

104

* Corresponding author. AN INTERACTIVE SCHEME FOR BUILDING MODELING USING THE  

E-Print Network [OSTI]

* Corresponding author. AN INTERACTIVE SCHEME FOR BUILDING MODELING USING THE SPLIT modeling is the 3D building model. It is essential in many applications, such as 3D GIS, cyber city, true-orthophoto generation, etc. Due to the huge demand of 3D building model, an effective solution for geometrical building

Salvaggio, Carl

105

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

106

RIS: A Reciprocal Incentive Scheme in Selfish Opportunistic Networks  

Science Journals Connector (OSTI)

Data dissemination in opportunistic networks has been extensively studied in recent years. In the resource-constrained opportunistic networks (e.g., the buffer size, the communication bandwidth and the energy of nodes are scarce), the nodes usually behave ... Keywords: Channel, Incentive scheme, Opportunistic networks, Selfish

Guangsong Zhao; Ming Chen; Xianglin Wei

2013-06-01T23:59:59.000Z

107

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

108

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 advances tubes. In utility boilers, early de- tection of leaks is primarily a financial issue. High velocityA new blowdown compensation scheme for boiler leak detection A. M. Pertew ,1 X. Sun ,1 R. Kent

Marquez, Horacio J.

109

Smart pricing scheme: A multi-layered scoring rule application  

Science Journals Connector (OSTI)

Defining appropriate pricing strategy for smart environment is important and complex task at the same time. It holds the primal fraction in Demand Response (DR) program. In our work, we devise an incentive based smart dynamic pricing scheme for consumers ... Keywords: Demand response, Energy management, Incentive design, Scoring rule, Smart grid

Shantanu Chakraborty; Takayuki Ito; Tomonobu Senjyu

2014-06-01T23:59:59.000Z

110

A congestion control scheme for wireless sensor networks  

E-Print Network [OSTI]

the number of non-empty queues; (ii) On-demand midway non-binary explicit congestion notification (CN) feedback; and (iii) Adaptive rate control based on additive increase and multiplicative decrease (AIMD). This scheme has been implemented in ns2. Extensive...

Xiong, Yunli

2005-08-29T23:59:59.000Z

111

A Secure Electronic Payment Scheme for Charity Donations  

E-Print Network [OSTI]

. In this paper we investigate the business need for an internet charity donation scheme, identify the security this donation. The amount of donation is the same regardless of their income. On the other hand, the Internet and e-commerce are changing individual lives considerably. The Internet excels at facilitating

Mitchell, Chris

112

Beyond first-order finite element schemes in micromagnetics  

SciTech Connect (OSTI)

Magnetization dynamics in ferromagnetic materials is ruled by the LandauLifshitzGilbert equation (LLG). Reliable schemes must conserve the magnetization norm, which is a nonconvex constraint, and be energy-decreasing unless there is pumping. Some of the authors previously devised a convergent finite element scheme that, by choice of an appropriate test space the tangent plane to the magnetization reduces to a linear problem at each time step. The scheme was however first-order in time. We claim it is not an intrinsic limitation, and the same approach can lead to efficient micromagnetic simulation. We show how the scheme order can be increased, and the nonlocal (magnetostatic) interactions be tackled in logarithmic time, by the fast multipole method or the non-uniform fast Fourier transform. Our implementation is called feeLLGood. A test-case of the National Institute of Standards and Technology is presented, then another one relevant to spin-transfer effects (the spin-torque oscillator)

Kritsikis, E., E-mail: kritsikis@math.univ-paris13.fr [Laboratoire d'analyse, gomtrie et applications, universit Paris 13, CNRS UMR 7539, 93430 Villetaneuse (France); Vaysset, A.; Buda-Prejbeanu, L.D. [SPINTEC, INAC, UMR CEA/CNRS/UJF-Grenoble 1/Grenoble-INP, F-38054 Grenoble (France)] [SPINTEC, INAC, UMR CEA/CNRS/UJF-Grenoble 1/Grenoble-INP, F-38054 Grenoble (France); Alouges, F. [CMAP, CNRS and cole polytechnique, F-91128 Palaiseau (France)] [CMAP, CNRS and cole polytechnique, F-91128 Palaiseau (France); Toussaint, J.-C. [Institut Nel, CNRS and universit Joseph Fourier, F-38042 Grenoble (France)] [Institut Nel, CNRS and universit Joseph Fourier, F-38042 Grenoble (France)

2014-01-01T23:59:59.000Z

113

A numerical magnetohydrodynamic scheme using the hydrostatic approximation  

Science Journals Connector (OSTI)

......non-magnetic variables. Note that this diagram gives no information regarding the vertical...5 SUMMARY We have described a numerical MHD scheme designed to model phenomena in gravitationally...Nordlunda., GalsgaardK., 1995, A 3D MHD Code for Parallel Computers, Technical......

Jonathan Braithwaite; Yuri Cavecchi

2012-12-21T23:59:59.000Z

114

A new microturbine-based dispersed generation scheme  

Science Journals Connector (OSTI)

Almost all of the commercial microturbine-based dispersed generation systems today are composed of a high-speed permanent-magnet alternator and a diode rectifier-PWM inverter pair. A dispersed generation scheme ?? made up of a microturbine, an induction generator, and a diode rectifier-PWM inverter pair ?? is introduced in this paper. A complete model for the self-excited squirrel-cage induction generator is developed and used to study the steady-state and transient behaviours of the overall system. The power delivered to the grid is controlled by an injected current control loop. The input/output power balance is maintained by regulating the DC-bus voltage using a new method based on the torque control of microturbine. Analysis shows that the Simulink simulation results of induction generator is a viable substitute for permanent magnet alternator in microturbine-based dispersed generation systems due to its low cost, low maintenance, rugged structure, and slack between rotor speed and terminal frequency, which isolates the transients of the grid from the generator system when the DC-bus capacitor size is reduced. Both schemes have been simulated and the simulation results are presented to compare the proposed scheme based on induction generator with the present microturbine-based dispersed generation scheme based on synchronous machine.

Afshin Majd; Mehrdad Kazerani

2007-01-01T23:59:59.000Z

115

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

116

Hybrid Search Schemes for Unstructured Peer-to-Peer Networks  

E-Print Network [OSTI]

network is not regular [1]. In addition, flooding has poor granularity [2], [3]. Simulating a random walk of the random walk simulation method appears to be better than the performance of flooding. In addition in terms of number of hits, network overhead, and response time. Our schemes combine flooding and random

Mihail, Milena

117

A Scheme-Based Closed-Loop Anesthesia System  

Science Journals Connector (OSTI)

Many aspects of modern medicine, including the administration of anesthetic agents during general surgery, remain unautomated and reliant on the vigilance of the attending clinicians. In other fields where failures can have catastrophic consequences, ... Keywords: Scheme, anesthesia, application programming, closed-loop control, cross-platform development, functional programming, medical systems

C. L. Petersen, M. Grges, J. M. Ansermino, G. A. Dumont

2014-08-01T23:59:59.000Z

118

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

119

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

120

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

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

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

122

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 on the uninspected part of the tubing. 1 INTRODUCTION In Pressurized Water Reactors, a program of periodic in for determining the percentage of tubes sampled is to provide, by means of a statistical analysis, an equation

Cizelj, Leon

123

An Unconditionally Stable Rotational Velocity-Correction Scheme ...  

E-Print Network [OSTI]

energy can be proven to be bounded at each time step [32, 20]. The fully ... schemes, often referred to in the literature as projection methods, are attractive in terms of computational efficiency ...... forever; It does not change in intensity or disappear, even after a very long-time simulation. .... We plan in the future to explore to.

124

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

125

Security of graph data: hashing schemes and definitions  

Science Journals Connector (OSTI)

Use of graph-structured data models is on the rise - in graph databases, in representing biological and healthcare data as well as geographical data. In order to secure graph-structured data, and develop cryptographically secure schemes for graph databases, ... Keywords: graphs, hash functions, integrity, perfectly secure hash functions, privacy

Muhammad U. Arshad, Ashish Kundu, Elisa Bertino, Krishna Madhavan, Arif Ghafoor

2014-03-01T23:59:59.000Z

126

A Distributed and Efficient Flooding Scheme Using 1-Hop Information  

E-Print Network [OSTI]

A Distributed and Efficient Flooding Scheme Using 1-Hop Information in Mobile Ad Hoc Networks Hai Liu, Xiaohua Jia, Senior Member, IEEE, Peng-Jun Wan, Xinxin Liu, and Frances F. Yao Abstract--Flooding of flooding suffers from the problems of excessive redundancy of messages, resource contention, and signal

Jia, Xiaohua

127

A Debugging Scheme for Declarative Equation Based Modeling Languages  

E-Print Network [OSTI]

and simulation, a number of object-oriented and/or declarative acausal modeling languages have emerged languages. Since these languages usually are based on object- orientation and acausal physical modelingA Debugging Scheme for Declarative Equation Based Modeling Languages Peter Bunus and Peter Fritzson

Burns, Peter

128

A Debugging Scheme for Declarative Equation Based Modeling Languages  

E-Print Network [OSTI]

and simulation, a number of object-oriented and/or declarative acausal modeling languages have emerged equation based modeling languages. Since these languages usually are based on object- orientationA Debugging Scheme for Declarative Equation Based Modeling Languages Peter Bunus, Peter Fritzson

Zhao, Yuxiao

129

UNEP scheme to bring power to Pakistan's villages  

Science Journals Connector (OSTI)

... Natural Resources, Energy and Transport in New York, the scheme is designed to harness solar energy, wind power and village bio-mass to generate electrical power on a suitable ... will be dependent on local geography and the local potential of renewable energy sources, especially solar, wind and water power and bio-mass. Bio-mass will be fermented to produce ...

Azim Kidwai

1978-04-13T23:59:59.000Z

130

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

131

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

132

Self-synchronizing scheme for high speed computational ghost imaging  

E-Print Network [OSTI]

Computational ghost imaging needs to acquire a large number of correlated measurements between reference patterns and the scene for reconstruction, so extremely high acquisition speed is crucial for fast ghost imaging. With the development of technologies, high frequency illumination and detectors are both available, but their synchronization needs technique demanding customization and lacks flexibility for different setup configurations. This letter proposes a self-synchronization scheme that can eliminate this difficulty by introducing a high precision synchronization technique and corresponding algorithm. We physically implement the proposed scheme using a 20kHz spatial light modulator to generate random binary patterns together with a 100 times faster photodiode for high speed ghost imaging, and the acquisition frequency is around 14 times faster than that of state-of-the-arts.

Suo, Jinli; Bian, Liheng; Zhang, Lei; Dai, Qionghai

2014-01-01T23:59:59.000Z

133

An iterative semi-implicit scheme with robust damping  

Science Journals Connector (OSTI)

An efficient, iterative semi-implicit (SI) numerical method for the time integration of stiff wave systems is presented. Physics-based assumptions are used to derive a convergent iterative formulation of the SI scheme which enables the monitoring and ... Keywords: 52.30Ex, 52.35Hr, 52.35Py, 52.35Vd, 52.65Tt, Dispersive plasma waves, Gyrofluid, Magnetic reconnection, Robust damping, Semi-implicit methods, Symplectic methods

N. F. Loureiro; G. W. Hammett

2008-04-01T23:59:59.000Z

134

SPEC 95fp tomcatv OSCAR A Local Memory Management Scheme  

E-Print Network [OSTI]

grain task parallel processing. In the evaluation using SPEC 95fp tomcatv, the proposed scheme using 8 Conditional Branch 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (b) Macro Task Graph (MTG)(a) Macro Flow Graph (MFG) 2),14) 12),14) (MTG)12),14) 2 4.1 RB RB PG 4.2 3.3 (PG) PG 2 #12;PG 4.4 4 OSCAR (Target Loop Group: TLG

Kasahara, Hironori

135

Treatment of aricultural drainage water: technological schemes and financial indicators  

Science Journals Connector (OSTI)

Treatment and application of agricultural drainage water (ADW) has become mandatory to cope with the shortage of potable water. In Egypt, current water supply plans comprise increasing utilization of the ample resource of ADW. The current limitations facing wider utilization of secondary sources in general and, ADW of particular, need extensive funding requirements. Best available technologies and consequently high level of capital have been required to implement treatment works. This paper presents techno-economic aspects of treatment and reuse of polluted surface water resulting from mixing river water with ADW. Proposed technological treatment schemes are first discussed. Further, the selected integrated treatment scheme based on conventional and advanced physicochemical techniques is elucidated. Membrane separation has been incorporated to achieve removal of residual pollutants as well as salinity reduction. Further, the paper is concluded with a techno-economic assessment of the proposed treatment train for 110,000 m3/d treatment facility. The results indicate promising features of the proposed scheme. Complementary studies are needed to assess potential environmental impacts under normal conditions.

Hala A. Talaat; Safaa R. Ahmed

2007-01-01T23:59:59.000Z

136

19 - Market development and certification schemes for biomethane  

Science Journals Connector (OSTI)

Abstract: Upgrading of biogas to methane and subsequent feed-in to the gas grid makes biomethane the joker in the pack in the renewable energies game, with advantages from environmental, political and economic points of view. Thus, in many countries, governments have designed national support schemes or announced national targets, resulting in development of the biomethane market. Feed-in support schemes, quota obligations and green gas products are the dominating market drivers in Europe. While most countries base their production on organic waste as feedstock, Germany dominates Europes feed-in market with energy crops; its market has developed rapidly, from first feed-in in 2006 to a total of 80 plants operating at the end of 2011. The main driver in Germany is the feed-in tariff for renewable electricity via the Renewable Energy Sources Act (EEG). European trading of biomethane was enabled by European directives. Support schemes for biomethane rely on mass balancing systems or book and claim-certificates. Several mass balancing systems have developed in Europe, such as the German Biogasregister Deutschland and the Dutch Vertogas. Discussion on the impacts on the agriculture, rising government awareness of biomethane and the removal of barriers for international trade will be trends for the coming years. Existing mass balancing systems may contribute to international market development by creating a common standard. System integration into gas and power grids, moving from subsidies to markets and competition with natural gas may become issues when biomethane increases in relevance.

Bowe Stephan

2013-01-01T23:59:59.000Z

137

Overview and Comparison of Global Concentrating Solar Power Incentives Schemes by Means of Computational Models  

Science Journals Connector (OSTI)

The present paper gives an updated picture of concentrating solar power incentives schemes in the World. It resumes the main figures of the incentives schemes per Country such as plant size limit, feed-in tariff ...

M. Villarini; M. Limiti; R. Impero Abenavoli

2011-01-01T23:59:59.000Z

138

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

E-Print Network [OSTI]

are taken by cities and logistics operators. Our criteriaGeroliminis andDaganzo: "Green Logistics" Schemes around theTable 2: Examples of green logistics schemes Geroliminis and

Geroliminis, Nikolaos; Daganzo, Carlos F.

2005-01-01T23:59:59.000Z

139

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

Science Journals Connector (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 be satisfied by this scheme. ...

Depeng Li; Zeyar Aung; John R. Williams; Abel Sanchez

2012-01-01T23:59:59.000Z

140

Formal verification of hierarchically distributed agent based protection scheme in smart grid  

Science Journals Connector (OSTI)

In recent studies, hierarchically distributed non-intrusive agent aided transmission line distance relaying protection scheme has been proposed. This scheme is meant to provide the distance relays with situational awareness and improve their robustness ...

Shravan Garlapati; Sandeep K. Shukla

2012-07-01T23:59:59.000Z

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.


141

A Scheme to Retain the Hadley Circulation During Nonlinear Normal Mode Initialization  

Science Journals Connector (OSTI)

A modified nonlinear normal mode initialization scheme is proposed which provides a possible solution to a major problem associated with nonlinear normal mode initialization. The modified scheme retains the Hadley circulation in the model and at ...

K. Puri; W. Bourke

1982-05-01T23:59:59.000Z

142

Study on the LWT control schemes of a heat pump for hot water supply  

Science Journals Connector (OSTI)

Heat pump systems have been widely used in buildings and industries due to their high performance. In this study, a leaving water temperature control scheme has been proposed for a water-to-water heat pump for hot water supply. The study was focused on the following four schemes: (1) using an auxiliary electric heater, (2) varying compressor speed, (3) adjusting water flow rate, and (4) adding heat to the secondary fluid flow of the heat source. With schemes (2) and (3), the system showed higher performance than other schemes. However, scheme (2) could not attain the appropriate LWT at low EWT heat source conditions. For all EWT conditions, using schemes (3) and (4) enabled the system to reach an appropriate LWT. Scheme (4) can be adopted as the best technology to control LWT, because it is not easy to vary flow rate of the secondary fluid as in scheme (3).

Jong Min Choi

2013-01-01T23:59:59.000Z

143

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

144

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

145

A parametric scheme for the numerical solution of the Boussinesq equation  

Science Journals Connector (OSTI)

A parametric scheme is proposed for the numerical solution of the nonlinear Boussinesq equation. The numerical method is developed by...

A. G. Bratsos

2001-01-01T23:59:59.000Z

146

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

147

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

148

In or out: efficient inclusion of installations in an emissions trading scheme?  

Science Journals Connector (OSTI)

Regulators around the world are currently considering national emissions trading schemes (ETS) as cost-effective instruments...

Regina Betz; Todd Sanderson; Tihomir Ancev

2010-04-01T23:59:59.000Z

149

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

150

On Evaluating Request-Distribution Schemes for Saving Energy in Server Clusters  

E-Print Network [OSTI]

On Evaluating Request-Distribution Schemes for Saving Energy in Server Clusters Karthick Rajamani- saving schemes. 1 Introduction Energy efficiency for servers has recently become an impor- tant concern and evalua- tion of request distribution schemes targeting energy savings in server clusters

Lu, Jiaheng

151

Adaptive Energy Saving Scheme for Downlink Elastic Traffic in Wireless Networks  

E-Print Network [OSTI]

Adaptive Energy Saving Scheme for Downlink Elastic Traffic in Wireless Networks Jongwook Lee, we propose several adaptive energy saving schemes that consider throughput and energy saving simultaneously. The proposed schemes are designed for an efficient tradeoff between throughput and energy saving

Bahk, Saewoong

152

Linear Lattice Boltzmann Schemes for Acoustic: parameters choices and isotropy properties  

E-Print Network [OSTI]

Linear Lattice Boltzmann Schemes for Acoustic: parameters choices and isotropy properties Adeline lattice Boltzmann schemes according to the definition of the isotropic order given in [3]. This property} for D2Q13). We then propose numerical illustrations for the D2Q9 scheme. Introduction Lattice Boltzmann

Paris-Sud XI, Université de

153

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

E-Print Network [OSTI]

2 pricing scheme or a feed-in tariff (FiT), and show theira CO 2 pricing scheme and a feed-in-tariff for DER and CHPCO 2 pricing scheme or feed-in tariff (FiT). Only 30.3 MW of

Stadler, Michael

2010-01-01T23:59:59.000Z

154

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.

155

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

156

New Flooding Control Schemes Applied In Route Initialisation For The Ad Hoc On Demand Routing Protocols  

E-Print Network [OSTI]

New Flooding Control Schemes Applied In Route Initialisation For The Ad Hoc On Demand Routing College London * Email: uceephu@ucl.ac.uk Abstract: This paper introduces a new route request flooding. This scheme aims to control and reduce the route request flooding. Furthermore, the scheme combines

Haddadi, Hamed

157

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. In this paper we describe our scheme for the reliable delivery of events within NaradaBrokering [1, 2], which

158

Attributes mode sampling schemes for international material accountancy verification  

SciTech Connect (OSTI)

This paper addresses the question of detecting falsifications in material balance accountancy reporting by comparing independently measured values to the declared values of a randomly selected sample of items in the material balance. A two-level strategy is considered, consisting of a relatively large number of measurements made at low accuracy, and a smaller number of measurements made at high accuracy. Sampling schemes for both types of measurements are derived, and rigorous proofs supplied that guarantee desired detection probabilities. Sample sizes derived using these methods are sometimes considerably smaller than those calculated previously.

Sanborn, J.B.

1982-12-01T23:59:59.000Z

159

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

160

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

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

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

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

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

164

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

165

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

166

High-spin level scheme of {sup 194}Pb  

SciTech Connect (OSTI)

High-spin states in {sup 194}Pb have been populated in the {sup 168}Er({sup 30}Si,4n) reaction at 142 MeV. The emitted {gamma} rays were detected by the EUROBALL III multidetector array. The level scheme was considerably extended and many previously observed {gamma}-ray transitions were reordered. Four new magnetic rotational bands were observed. The energies and spins of the bandheads of all previously observed magnetic rotational bands were corrected based on the observation of new transitions. From nine observed bands, only one could not be connected to the lower lying states. Based on comparison systematics with neighboring Pb isotopes and tilted-axis cranking model calculations previously reported, configuration assignments to the observed bands have been made.

Kutsarova, T.; Stefanova, E. A.; Minkova, A.; Lalkovski, S.; Korichi, A.; Lopez-Martens, A.; Hannachi, F.; Huebel, H.; Goergen, A.; Jansen, A.; Schoenwasser, G.; Khoo, T. L.; Herskind, B.; Bergstroem, M.; Bazzacco, D.; Podolyak, Z. [Institute for Nuclear Research and Nuclear Energy, BAS, BG-1784 Sofia (Bulgaria); Faculty of Physics, University of Sofia 'St. Kliment Ohridski', BG-1164 Sofia (Bulgaria); CSNSM Orsay, IN2P3/CNRS, F-91405 (France); HISKP, Helmholtz-Institute fuer Strahlen-und Kernphysik, Nussallee 14-16, D-53115 (Germany); ISKP, Universitaet Bonn, Nussallee 14-16, D-53115 (Germany); Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen (Denmark); Dipartimento di Fisica, Universita di Padova and INFN Sezione di Padova, I-35131 Padova (Italy); INFN, Laboratori Nationali di Legnaro (Italy)

2009-01-15T23:59:59.000Z

167

Progress and problems in micro-grid protection schemes  

Science Journals Connector (OSTI)

Abstract Globally, gradual depletion of fossil fuel resources, poor energy efficiency and environmental pollution are among the main problems faced in the conventional power system. This leads to a new trend of generating power locally by using Distributed Energy Resources (DERs) at distribution voltage level. The concept of micro-grid has appeared as an attractive alternative for integration of \\{DERs\\} in the distribution networks which has numerous advantages in terms of reliability and power quality. Despite the advantages, several challenges are still hindering the development of micro-grids. One of the challenges is micro-grid protection, and to resolve this, researchers have been working to develop different protection schemes. The objective of this study is to review previous research works on the existing protection strategies deployed in addressing micro-grid protection issues in both grid-connected and islanded mode of operation.

Sohrab Mirsaeidi; Dalila Mat Said; Mohd. Wazir Mustafa; Mohd. Hafiz Habibuddin; Kimia Ghaffari

2014-01-01T23:59:59.000Z

168

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

169

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

170

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

171

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...

172

E-Print Network 3.0 - algorithmic language scheme Sample Search...  

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

scheme's suitable neighbourhood... computable function, i.e. for every algorithm one can point out such a ... Source: Association for Computational Linguistics (ACL) Anthology...

173

A practical local hacking scheme on device-independent Bell test based quantum randomness expansion  

Science Journals Connector (OSTI)

Violation of Bell inequality cannot guarantee non-locality, thus an applicable hacking scheme on device-independent Bell test based quantum randomness expansion is given, together with...

Li, Junhui; Yu, Quanfu; Liu, Yu; Guo, Hong

174

A Comparative Performance Study of Load Adaptive Energy Saving Schemes for IP-Over-WDM Networks  

Science Journals Connector (OSTI)

Load adaptive energy saving schemes for backbone IP networks use dynamic transport circuit services to adapt the active network resources to the current traffic demand in order to...

Caria, Marcel; Chamania, Mohit; Jukan, Admela

2012-01-01T23:59:59.000Z

175

Ground water monitoring system for effluent irrigated areas : a case study of Hawkesbury water recycling scheme.  

E-Print Network [OSTI]

??Water recycling schemes are increasingly being implemented across Australia as an effective means of converting wastewater into a valuable resource. There is currently a lack (more)

Beveridge, Gavin John

2006-01-01T23:59:59.000Z

176

Illuminating The Irish Free State: Nationalism, National Identity, And The Promotion Of The Shannon Hydroelectric Scheme.  

E-Print Network [OSTI]

??This dissertation focuses on the ways in which the Shannon Hydroelectric Scheme influenced perceptions of Irishness in the fraught context of postcolonial nation building. The (more)

Sutton, McKayla Kay

2014-01-01T23:59:59.000Z

177

Cost-effectiveness assessment of energy efficiency obligation schemes - implications for Swedish industries.  

E-Print Network [OSTI]

?? This thesis is an investigation of whether an energy efficiency obligation scheme would be cost-effective for the Swedish industrial sector. The basic guidelines of (more)

Xylia, Maria

2013-01-01T23:59:59.000Z

178

An equitable, efficient and implementable scheme to control global carbon dioxide emissions  

Science Journals Connector (OSTI)

We design an international scheme to control global externalities in which autonomous regions choose their own emissions levels in anticipation of interregional resource transfers implemented by an internation...

Arthur J. Caplan; Emilson C. D. Silva

2007-06-01T23:59:59.000Z

179

Application of the TANDEM scheme for reconstructing flaw images by the SAFT method  

Science Journals Connector (OSTI)

The question of applying the TANDEM scheme for reconstructing flaw images by the SAFT method is considered. When the reflection of...

A. E. Bazulin; E. G. Bazulin; D. A. Koval

2009-07-01T23:59:59.000Z

180

Enhancing reliability in passive anti-islanding protection schemes for distribution systems with distributed generation.  

E-Print Network [OSTI]

??This thesis introduces a new approach to enhance the reliability of conventional passive anti-islanding protection scheme in distribution systems embedding distributed generation. This approach uses (more)

Sheikholeslamzadeh, Mohsen

2012-01-01T23:59:59.000Z

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.


181

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

182

Amplifiers involving two-photon energy-extraction schemes  

Science Journals Connector (OSTI)

Amplifiers based on two-photon decay channels of inverted metastable species are examined from a rate-equation and practical-feasibility viewpoint. Approximate analytical solutions, within the rate-equation approximation, predict that resonant parametric generation coupled with anti-Stokes-stimulated Raman scattering (ASRS) is a strong competitor to straight two-photon emission. Expressions for initial growth rates indicate that large linear chromatic dispersion, proper linear absorptions, and resonant enhancements can initially favor two-photon emission, but that ASRS will ultimately dominate in most practical situations if inversion depletion does not occur early. For an amplifier based on degenerate two-photon processes, this situation has led to the proposal of running the system as an odd-harmonic generator, first extracting energy via two-photon emission followed by greater-than-100% conversion to the third, fifth, seventh, etc., harmonics. This type of amplifier response has important potential applications for laser-induced thermonuclear fusion as well as for the production of coherent vacuum-uv soft-x-ray systems. An examination of practical constraints provides further analytical relationships between various physical properties of prospective metastable species. Combining these results, several two-photon schemes are pointed out. Based on current technology, atomic iodine, which is inverted to the P122 state, appears to be the best medium for experiments, but other materials, such as atomic oxygen, show greater promise if absolute population inversions of high-density material are created at high efficiency.

R. L. Carman

1975-09-01T23:59:59.000Z

183

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

184

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

185

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

186

REGIONBASED IMAGE FUSION SCHEME FOR CONCEALED WEAPON Zhong Zhang and Rick S. Blum  

E-Print Network [OSTI]

REGION­BASED IMAGE FUSION SCHEME FOR CONCEALED WEAPON DETECTION Zhong Zhang and Rick S. Blum and recognition of objects. A particular case of interest is where images from possibly different types of sensors are to be combined. Concealed weapon detection (CWD) is one interesting application. An image fusion scheme

Blum, Rick

187

GU Heritage Retail Ltd GUIDE TO INFORMATION AVAILABLE THROUGH OUR PUBLICATION SCHEME  

E-Print Network [OSTI]

GU Heritage Retail Ltd GUIDE TO INFORMATION AVAILABLE THROUGH OUR PUBLICATION SCHEME The Freedom Heritage Retail Ltd has adopted the Model Publication Scheme 2011 produced by the Scottish Information Where GU Heritage Retail Ltd holds the copyright in its published information, the information may

Glasgow, University of

188

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

189

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. In this case, introduction of a common TGC -support scheme for renewable technologies will lead to more

190

A System-level Scheme for Resistance Drift Tolerance of a Multilevel Phase Change Memory  

E-Print Network [OSTI]

of a phase change material such as GTS tends to drift over time. The change in resistance severely degradesA System-level Scheme for Resistance Drift Tolerance of a Multilevel Phase Change Memory Pilin presents a system-level scheme to alleviate the effect of resistance drift in a multilevel phase change

Han, Jie

191

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

192

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

193

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

194

Lattice-Boltzmann type relaxation systems and high order relaxation schemes for the incompressible  

E-Print Network [OSTI]

Lattice-Boltzmann type relaxation systems and high order relaxation schemes for the incompressible A relaxation system based on a Lattice-Boltzmann type discrete veloc- ity model is considered in the low Mach for several test cases in one and two space dimensions. Keywords. Lattice Boltzmann method, relaxation schemes

Pareschi, Lorenzo

195

A Hybrid Decomposition Scheme for Building Scientific Workflows , Kenneth Chiu2  

E-Print Network [OSTI]

infrastructure for the composition of CCA components. 2 Hybrid DecomposA Hybrid Decomposition Scheme for Building Scientific Workflows Wei Lu1 , Kenneth Chiu2 , Satoshi methodologies, in this paper we present a hybrid problem decomposition scheme. By aug- menting Ccaffeine

196

Overview and comparison of global concentrating solar power incentives schemes by means of computational models  

Science Journals Connector (OSTI)

The present paper gives an updated picture of concentrating solar power incentives schemes in the World. It resumes the main figures of the incentives schemes per Country such as plant size limit, feed-in tariff value, duration, inflation recovery and ... Keywords: concentrating solar power, feed-in-tariff

M. Villarini; M. Limiti; R. Impero Abenavoli

2007-06-01T23:59:59.000Z

197

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

198

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, Université de

199

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

200

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

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

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

202

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

203

Performance of reimbursement schemes in valuation of technologies: The example of Magnetic Resonance Imaging  

Science Journals Connector (OSTI)

Different reimbursement schemes for health care providers have been developed worldwide. They have evolved over time and have been influenced by politics, costs, patient needs and technological progress. Different methods in the valuation of technologies ... Keywords: Magnetic Resonance Imaging, Valuation, payment, reimbursement schemes, technologies

R. Blankart; J. Schreygg; R. Busse

2008-08-01T23:59:59.000Z

204

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

205

An Optimal Design Method for Simulation Verification, Validation and Accreditation Schemes  

Science Journals Connector (OSTI)

With the size and complexity of simulation applications growing rapidly, it has become an important problem to design applicable and affordable verification, validation and accreditation (VV&A) schemes for complex simulation systems. To address this ... Keywords: VV&A schemes, fuzzy FMEA, fuzzy linear programming, fuzzy linear regression, optimal design method

Fei Liu; Ming Yang

2009-06-01T23:59:59.000Z

206

A precomputation-based scheme for qos routing and fair bandwidth allocation  

Science Journals Connector (OSTI)

We propose a precomputation-based scheme offering Pareto optimal solutions to the network optimization problem. This scheme precomputes bandwidth allocation (rate vector) and end-to-end paths with QoS guarantees. It prepares a routing database, identifying ... Keywords: QoS routing, communication networks, proportional fairness

Chia-Hung Wang; Hsing Luh

2006-12-01T23:59:59.000Z

207

High order maximum principle preserving semi-Lagrangian finite difference WENO schemes for the Vlasov equation  

Science Journals Connector (OSTI)

In this paper, we propose the parametrized maximum principle preserving (MPP) flux limiter, originally developed in [37], to the semi-Lagrangian finite difference weighted essentially non-oscillatory scheme for solving the Vlasov equation. The MPP flux ... Keywords: Finite difference WENO scheme, Maximum principle preserving, Parametrized flux limiter, Semi-Lagrangian method, Vlasov equation

Tao Xiong, Jing-Mei Qiu, Zhengfu Xu, Andrew Christlieb

2014-09-01T23:59:59.000Z

208

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

209

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

210

Review of the Projects Peer Review Panel and the Project Research and Development Scheme Summary Report  

E-Print Network [OSTI]

Review of the Projects Peer Review Panel and the Project Research and Development Scheme Summary Peer Review Panel (PPRP) process and the Project Research and Development (PRD) scheme to develop to funding can sometimes be too long with some delays occurring after the peer review process; Proposals

211

An Ultra-Fast and Provably CMA Resistant Digital Signature Scheme  

E-Print Network [OSTI]

MQQ-SIG An Ultra-Fast and Provably CMA Resistant Digital Signature Scheme Danilo Gligoroski1 , Rune, Macedonia smile@ii.edu.mk Abstract. We present MQQ-SIG, a signature scheme based on "Mul- tivariate: Public Key Cryptography, Ultra-Fast Public Key Cryptog- raphy, Multivariate Quadratic Polynomials

Paris-Sud XI, Université de

212

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

213

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

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

Design of a European agrochemical plastic packaging waste management schemePilot implementation in Greece  

Science Journals Connector (OSTI)

Abstract Mismanagement of Agrochemicals Plastic Packaging Waste (APPW) constitutes a major environmental problem, resulting in the pollution of soil, air and water resources and compromising the agricultural products safety, the protection of the environment and the public health. Systems for the management of APPW have been established in some European countries and they are operational for several years now. However, these schemes are incompatible while their operational conditions and technical criteria could be improved. In many countries no schemes exist yet for the management of APPW with serious negative consequences for the environment and public health. In response to these problems the European project AgroChePack has developed an environmental friendly, economically viable European APPW management scheme by transferring know-how from existing schemes, designing a new integrated APPW management scheme and testing it through pilot trials in five countries. This work presents the basic design principles established by AgroChePack by identifying problems and bottlenecks faced by existing schemes in Europe, by developing an integrated APPW scheme and by implementing, evaluating and optimising this scheme through pilot trials in Greece.

D. Briassoulis; M. Hiskakis; H. Karasali; C. Briassoulis

2014-01-01T23:59:59.000Z

216

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

217

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

218

Low-Energy Nuclear Level Scheme of Rh104  

Science Journals Connector (OSTI)

Investigations of the low-energy level properties (level energies, spins, and parities) of Rh104 have been undertaken from studies of the coincidence relationships existing between the low-energy capture gamma rays produced by thermal neutron capture in Rh103 using NaI(Tl) scintillation crystals as detectors. It is known from the decay scheme of the 4.4-min Rh104m isomer that Rh104 has energy levels at 52, 96, and 129 keV with spins and parities of 2-, 2+, and 5+, respectively. The data obtained in these investigations have been combined with the isomeric level data in order to determine the properties of several additional levels. Additional levels in Rh104 have been determined at the following energies, with the level spin and parity in parenthesis after the energy; 184 keV (1), 192 keV (3+), 269 keV (3), 450 keV, and either 229 keV (3+) or 325 keV (4+). These spin and parity assignments were made on the basis of a K internal conversion coefficient analysis of the coincidence data together with consideration of the relative cascade intensities. On the basis of the possible odd-proton and odd-neutron configurations open to the 184- and 269-keV levels, and considering the transition intensities to the lower levels, it was determined that the negative-parity assignment is most probable for both of these levels, with the levels having configuration assignments of (p32)(d52). The 192-keV level together with the 229- or 325-keV level most probably have either [(g92)5]72(d52)n or (g92)5(d52)n configurations. In fact, if it is the 229-keV level which does exist, as the available evidence might seem to indicate, then, since they both have spins and parities of 3+, the 192-keV level would have one of these configurations while the 229-keV level would have the other.

R. C. Greenwood

1963-01-01T23:59:59.000Z

219

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

220

A refrigerator-heat-pump desalination scheme for fresh-water and salt recovery  

Science Journals Connector (OSTI)

This study concerns a refrigerator-heat-pump desalination scheme (RHPDS), which allows energy-efficient recovery of fresh water and salt from the sea. In this scheme, a salt-water chamber is continuously refilled with sea water via atmospheric pressure. Sea water is evaporated into a vacuum chamber and the water vapor is condensed on top of a fresh-water chamber. A refrigerator-heat-pump circuit maintains the two water chambers at suitably different operating temperatures and allows efficient recovery of the latent heat of condensation. The scheme is analyzed with special consideration to potential exploitation of renewable energy sources such as solar and wind energy.

M. Reali

1984-01-01T23:59:59.000Z

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.
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221

Numerical Solution to Drop Coalescence/Breakup with a Volume-Conserving, Positive-Definite, and Unconditionally Stable Scheme  

Science Journals Connector (OSTI)

This paper discusses a new volume- and volume concentrationconserving, positive-definite, unconditionally stable iterative numerical scheme for solving temporary cloud/raindrop coalescence followed by breakup and the coupling of the scheme with ...

M. Z. Jacobson

2011-02-01T23:59:59.000Z

222

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

223

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

224

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

225

A predictor-corrector scheme for the numerical solution of the Boussinesq equation  

Science Journals Connector (OSTI)

A fourth order in time and second order in space scheme using a finite-difference method is developed for the non-linear Boussinesq equation. For the solution of the resulting...

M. S. Ismail; A. G. Bratsos

2003-09-01T23:59:59.000Z

226

Improvements to a Tropical Cyclone Initialization Scheme and Impacts on Forecasts  

Science Journals Connector (OSTI)

This study makes improvements to the tropical cyclone (TC) initialization method introduced by Nguyen and Chen (i.e., the NC2011 scheme). The authors found that prescribing sea level pressure associated with the initial vortex using a modified ...

Hiep Van Nguyen; Yi-Leng Chen

2014-11-01T23:59:59.000Z

227

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

228

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

E-Print Network [OSTI]

The phase-field approach, whose origin can be traced back to [29] and [38], has ... Another main advantage of energy stable schemes is that they can be easily.

2014-11-11T23:59:59.000Z

229

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

230

Sensitivity of Tropical Cyclone Feedback on the Intensity of Western Pacific Subtropical High to Microphysics Scheme  

Science Journals Connector (OSTI)

The Advanced Weather Research Forecast (WRF) model is used to examine the sensitivity of simulated tropical cyclone (TC) track and associated intensity of western Pacific subtropical high (WPSH) to microphysical parameterization (MP) scheme. It is ...

Yuan Sun; Zhong Zhong; Wei Lu

231

Make it a double? Sobering results from simulations using single-moment microphysics schemes  

Science Journals Connector (OSTI)

Single-moment microphysics schemes have long enjoyed popularity for their simplicity and efficiency. However, in this article it is argued through theoretical considerations, idealized thunderstorm simulations, and radiative-convective equilibrium ...

Adele L. Igel; Matthew R. Igel; Susan C. van den Heever

232

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

233

A Key Management Scheme for Secure Communications of Advanced Metering Infrastructure  

Science Journals Connector (OSTI)

Key management for secure communications of Advanced Metering Infrastructure is an unsolved problem until now. The ... proposing a key management scheme based on a hybrid-tree graph for AMI. The cyber security...

Jinshan Chen; Nian Liu; Wenxia Liu; Hong Luo

2011-01-01T23:59:59.000Z

234

An Energy Efficient On-Demand Routing Scheme Based on Link Quality for Wireless Sensor Networks  

Science Journals Connector (OSTI)

Most of legacy routing schemes for wireless sensor networks do not consider the retransmission energy consumption when they predict the transmission energy consumption. They usually select the path based on ho...

Bo-Gyoung Kim; Won Yeoul Lee; Seok-Yeol Heo

2011-01-01T23:59:59.000Z

235

Validation of an in-flight flow visualization scheme to quantitatively measure vortical flow phenomena  

E-Print Network [OSTI]

A flow visualization measurement scheme was validated in flight. Strake vortex trajectories and axial core velocities were determined using pulsed smoke and high speed video. A gothic strake, operated at an angle of attack of 220 and a Reynolds...

Dorsett, Kenneth Merle

2012-06-07T23:59:59.000Z

236

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...

237

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

E-Print Network [OSTI]

of the landscape. This research combines the fundamental concepts of landscape ecology and geomorphological mapping to develop a landscape ecological mapping methodology. The mapping scheme has been developed to understand the landscape change of Galveston Island...

Lynch, Karen Marie

2012-06-07T23:59:59.000Z

238

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

239

Performance Evaluation of Multiuser Selection Scheme in HANs of Smart Grid  

Science Journals Connector (OSTI)

In Home Area Networks (HANs) of Smart Grid with the promising WiFi Direct technique, multiuser ... performance of multiuser selection scheme in HANs of Smart Grid is related with several factors, i.e...

Zhuo Li; Qilian Liang; Baoju Zhang

2014-01-01T23:59:59.000Z

240

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

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

Linking the emissions trading schemes of Europe and China - Combining climate and energy policy instruments  

Science Journals Connector (OSTI)

Both Europe and China have announced targets for greenhouse gas emissions reduction and renewable energy development. To achieve their emissions targets, Europe has introduced emissions trading scheme (ETS) since...

Yang Liu; Taoyuan Wei

2014-07-01T23:59:59.000Z

242

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

243

Efficient quantum key distribution scheme with pre-announcing the basis  

E-Print Network [OSTI]

We devise a new quantum key distribution scheme that is more efficient than the BB84 protocol. By pre-announcing basis, Alice and Bob are more likely to use the same basis to prepare and measure the qubits, thus achieves a higher efficiency. The error analysis is revised and its security against any eavesdropping is proven briefly. Furthermore we show that, compared with the LCA scheme, our modification can be applied in more quantum channels.

Jingliang Gao; Changhua Zhu; Heling Xiao

2014-10-21T23:59:59.000Z

244

Chemical resistance determination test scheme and rating system development for industrial glove evaluation  

E-Print Network [OSTI]

CHEMICAL RESISTANCE DETERMINATION TEST SCHEME AND RATING SYSTEM DEVELOPMENT FOR INDUSTRIAL GLOVE EVALUATION A Thesis by WILLIAM JOSEPH CORNILS Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1981 Major Subject: Industrial Hygiene CHEMICAL RESISTANCE DETERMINATION TEST SCHEME AND RATING SYSTEM DEVELOPMENT FOR INDUSTRIAL GLOVE EVALUATION A Thesis by WILLIAM JOSEPH CORNILS Approved...

Cornils, William Joseph

2012-06-07T23:59:59.000Z

245

Continuous variable versus hybrid schemes for quantum teleportation of Gaussian states  

E-Print Network [OSTI]

In this paper, we examine and compare two fundamentally different teleportation schemes; the well-known continuous variable scheme by Vaidman, Braunstein and Kimble (VBK), and a recently proposed hybrid scheme by Andersen and Ralph (AR). We analyze the teleportation of ensembles of arbitrary pure single-mode Gaussian states using these schemes and see how they fare against the optimal measure-and-prepare strategies -- the benchmarks. In the VBK case, we allow for non-unit gain tuning and consider a class of possibly non-Gaussian resources in order to optimize performance. The results suggest that the AR scheme may likely be a more suitable candidate for beating the benchmarks in the teleportation of squeezing, capable of achieving this for moderate resources in comparison to the VBK scheme. Moreover, our quantification of resources, whereby different protocols are compared at fixed values of the entanglement entropy or the mean energy of the resource states, brings into question any advantage due to non-Gauss...

Kogias, Ioannis; Adesso, Gerardo

2014-01-01T23:59:59.000Z

246

Continuous variable versus hybrid schemes for quantum teleportation of Gaussian states  

E-Print Network [OSTI]

In this paper, we examine and compare two fundamentally different teleportation schemes; the well-known continuous variable scheme by Vaidman, Braunstein and Kimble (VBK), and a recently proposed hybrid scheme by Andersen and Ralph (AR). We analyze the teleportation of ensembles of arbitrary pure single-mode Gaussian states using these schemes and see how they fare against the optimal measure-and-prepare strategies -- the benchmarks. In the VBK case, we allow for non-unit gain tuning and consider a class of possibly non-Gaussian resources in order to optimize performance. The results suggest that the AR scheme may likely be a more suitable candidate for beating the benchmarks in the teleportation of squeezing, capable of achieving this for moderate resources in comparison to the VBK scheme. Moreover, our quantification of resources, whereby different protocols are compared at fixed values of the entanglement entropy or the mean energy of the resource states, brings into question any advantage due to non-Gaussianity for quantum teleportation of Gaussian states.

Ioannis Kogias; Sammy Ragy; Gerardo Adesso

2014-02-02T23:59:59.000Z

247

Standardization of raw wind speed data under complex terrain conditions: A data-driven scheme  

Science Journals Connector (OSTI)

Abstract Direct usage of raw wind data without modification of topographic and/or terrain effects may result in remarkable errors. Thus, standardization of raw wind datasets is of great importance to remove these influences. But, the existing standardization methods are mainly applicable for flat terrains, which may become inappropriate under complex terrain conditions. This paper presents a data-driven standardization scheme which can be applied for different terrains including complex terrains. Although this scheme is established based on wind profile records at a reference station equipped with both an anemometer at a near-ground height and a Doppler radar profiler system, it can be used for the standardization of surface winds not only at the reference station but also at other surrounding stations with only surface observation instruments. Thus, the proposed data-driven scheme is efficient and economic. As applications of this scheme, correction factors to convert raw wind speeds at about 50 weather stations in Hong Kong to those over a reference terrain are estimated. To verify the effectiveness of the proposed standardization scheme, a wind tunnel testing involved the topographic model of a weather station has been conducted. The standardization results via the proposed scheme and the wind tunnel testing are in good agreement. The proposed methodology and relevant results can be used for the analysis of topographic effects on wind speeds over complex terrains.

Y.C. He; P.W. Chan; Q.S. Li

2014-01-01T23:59:59.000Z

248

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

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 χ ?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 χ -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, M.; Benyahia

2013-01-01T23:59:59.000Z

249

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

250

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

251

Study of energy tax and rebate schemes: energy conservation and the question of equity  

SciTech Connect (OSTI)

Taxing all kinds of primary energy at the wellhead on a $/Btu basis is suggested. This aims at inducing energy conservation throughout the economic system. To reduce the financial pressure of the tax on consumers, especially the poor, tax revenues could be rebated to households. It has been attempted to design an equitable rebate scheme. A mathematical model was developed that approximates the reduction in a household's total energy consumption in response to higher energy prices and different rebate schemes. This model is based on the assumption that energy consumption is a function of a household's real income, prices of different commodities, and energy intensities. The amount of energy saved and the change in real expenditure of a household was calculated for four tax rates; 50%, 100%, 224% and 400%, and five rebate schemes; one regressive, two progressive, one income distribution preserving and the flat per-capita rebate. The results indicate that, for a given tax rate, the choice of rebate scheme does not significantly affect the amount of energy conserved by the households. However, the effectof different rebate schemes on a household's real expenditure could be dramatically different.

Fazel Sarjui, F.

1983-01-01T23:59:59.000Z

252

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

2014-05-15T23:59:59.000Z

253

Scheme for detection of low clouds from geostationary weather satellite imagery  

Science Journals Connector (OSTI)

Abstract A simple and practical scheme for low cloud detection at sea based on geostationary weather satellite data is proposed. The scheme consists of several threshold discrimination tests, and time-consuming procedures are eschewed in order to enable near-real-time analysis. This scheme also minimizes the use of data other than from geostationary weather satellites, leading to a convenient low cloud detection procedure without ancillary data. Careful investigation of the radiative properties of low water clouds from radiative transfer simulation and satellite observations enables full utilization of the characteristics of satellite data and realization of the simple scheme. The threshold values, which should possess high generality, for the discrimination tests are obtained from statistical comparisons of Multi-function Transport Satellite-2 data to grid point value data, which allows for extensive data collection and eliminates the localities and anomalies. Verification by comparisons with radiosonde and lidar on satellite suggests that results obtained from the proposed low cloud detection scheme are reasonable.

Haruma Ishida; Kentaro Miura; Teruaki Matsuda; Kakuji Ogawara; Azumi Goto; Kuniaki Matsuura; Yoshiko Sato; Takashi Y. Nakajima

2014-01-01T23:59:59.000Z

254

WENO-enhanced gas-kinetic scheme for direct simulations of compressible transition and turbulence  

SciTech Connect (OSTI)

The recently developed Gas Kinetic Method (GKM) for computing fluid flow is enhanced with advanced reconstruction (interpolation) schemes to enable direct simulations of highly compressible transition and turbulence fields. Variants of Weighted Essentially Non-Oscillatory (WENO) reconstruction schemes of different orders of accuracy are implemented and examined along with more elementary van Leer method. The competing schemes are evaluated for their accuracy, efficiency and numerical stability. The computed results are compared against the Rapid Distortion Theory for the case of compressible shear turbulence and 'pressure-released' Burgers solution. In the case of decaying isotropic turbulence, the efficacy of the reconstruction schemes is evaluated by comparison against a 'gold standard' high-resolution simulation. The capabilities of the reconstruction schemes to capture linear, non-linear, pressure-released and viscous flow physics as well as solenoidal and dilatational features of the flow fields are established in isolation and combination. The most suitable WENO variant for integration with GKM is identified. Another important outcome of the study is the finding that temperature-interpolation is superior to energy-interpolation in avoiding negative temperatures arising due to the Gibbs phenomenon. Overall, this work advances the applicability of kinetic theory based GKM to a wider range of high Mach number flow physics.

Kumar, G., E-mail: gauravkr@tamu.edu [Department of Aerospace Engineering, Texas A and M University, College Station, TX 77843 (United States); Girimaji, S.S., E-mail: girimaji@tamu.edu [Department of Aerospace Engineering, Texas A and M University, College Station, TX 77843 (United States); Kerimo, J. [Department of Aerospace Engineering, Texas A and M University, College Station, TX 77843 (United States)] [Department of Aerospace Engineering, Texas A and M University, College Station, TX 77843 (United States)

2013-02-01T23:59:59.000Z

255

.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.

256

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

257

Genetic algorithm-based demand response scheme for electric vehicle charging  

Science Journals Connector (OSTI)

This paper presents a design and evaluates the performance of a charging task scheduler for electric vehicles, aiming at reducing the peak load and improving the service ratio in charging stations. Based on a consumption profile and the real-time task model consisting of actuation time, operation length, and deadline, the proposed scheduler fills the time table, by which the power controller turns on or off the electric connection switch to the vehicle on each time slot boundary. Genetic evolutions yield better results by making the initial population include both heuristic-generated schedules for fast convergence and randomly generated schedules for diversity loss compensation. Our heuristic scheme sequentially fills the time slots having lowest load for different orders such as deadline and operation length. The performance measurement result obtained from a prototype implementation reveals that our scheme can reduce the peak load for the given charging task sets by up to 4.9%, compared with conventional schemes.

Junghoon Lee; Gyung-Leen Park

2013-01-01T23:59:59.000Z

258

The solar photovoltaic feed-in tariff scheme in New South Wales, Australia  

Science Journals Connector (OSTI)

Abstract Solar Photovoltaic (PV) electricity systems are part of Australia's energy supply matrix. In the case of New South Wales (NSW), the state government has had to deal with a complex policy problem. In order to play its role in the federal Small-scale Renewable Energy Scheme, the NSW government initiated the 7 year Solar Bonus Scheme in 2010. However, in attempting to maximise community investment in small-scale solar PV systems, it relied on faulty financial modelling that applied a generous Feed-in Tariff (FiT) and underestimated the level of investor participation and installed capacity. Consequently, the scheme has resulted in very high public costs that will require policy changes that bring investors and energy retailers into conflict, and unpopular electricity retail price adjustments. This paper uses a structured case and stakeholder analysis to critically analyse the FiT policy, while also highlighting important lessons for policymakers engaging in FiT design.

Nigel Martin; John Rice

2013-01-01T23:59:59.000Z

259

Evaluation of flooding schemes for real-time video transmission in \\{VANETs\\}  

Science Journals Connector (OSTI)

Abstract Long-distance real-time video flooding over Vehicular Ad-hoc Networks (VANETs) is challenging due to the dynamic nature of vehicular networks. Real-time video transmission has high requirements in terms of bandwidth and delay, while \\{VANETs\\} are characterized by very limited radio resources and high mobility. Our objective is to compare ten different flooding schemes specially designed for this task and select the best in terms of packet arrival ratio and Peak Signal-to-Noise Ratio (PSNR). Additionally, we propose Automatic Copies Distance Based (ACDB), an improved flooding scheme, to cope with variable vehicle density situations. Furthermore, to ensure a good behavior under all types of circumstances, we also study the impact of Global Positioning System (GPS) drift on these schemes. Simulation results show that long-distance real-time video flooding transmission is feasible under certain vehicle density conditions and the quality achieved is enough to allow using such solutions in future applications.

Alvaro Torres; Carlos T. Calafate; Juan-Carlos Cano; Pietro Manzoni; Yusheng Ji

2015-01-01T23:59:59.000Z

260

The UK landfill tax and the landfill tax credit scheme: operational weaknesses  

Science Journals Connector (OSTI)

The UK Landfill Tax and the related Landfill Tax Credit Scheme have now been in operation since October 1996. There have been a number of reviews to assess its operation and effectiveness that have led to some minor amendments. However, there continue to be concerns about operational weaknesses of the tax and the credit scheme. In particular, there is the risk that the tax may be evaded and there are fears that a lack of transparency and independence may undermine the fundamental principles of the Landfill Tax Credit Scheme. Following a recent report, the Secretary of State for the Department of the Environment, Transport and the Regions has set up an inquiry. This paper looks at some of the specific concerns that have been raised and the implications for waste management.

John R. Morris; Adam D. Read

2001-01-01T23:59:59.000Z

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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

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

262

Regional protection scheme designed for low-voltage micro-grids  

Science Journals Connector (OSTI)

Abstract No selective protection exists in the low-voltage level micro-grid integrated with DG presently. To deal with this problem, a new type of micro-grid protection scheme based on fault component is put forward. To implement this scheme, the micro-grid is divided into several regions, and each region is regarded as the target of protection. As a result, not only the scope of outage is decreased in accordance with the action of the protection, but the economic requirement of protection arrangement is met. Taking the negative sequence component as the basic characteristic quantity, a variety of asymmetric faults effectively can be identified successfully. Considering the adverse effects of unbalanced load and the switching of large capacity single phase load, a low-voltage supplement criterion is introduced. The effectiveness of this protection scheme is verified with EMTDC based simulation tests.

Xiangning Lin; Rui Zhang; Ning Tong; Xianshan Li; Ming Li; Dexian Yang

2015-01-01T23:59:59.000Z

263

A New Scheme for the Promotion of Renewable Energies in Developing  

Open Energy Info (EERE)

A New Scheme for the Promotion of Renewable Energies in Developing A New Scheme for the Promotion of Renewable Energies in Developing Countries: The Renewable Energy 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 Energy Regulated Purchase Tariff Agency/Company /Organization: JRC European Commission Sector: Energy Focus Area: Renewable Energy Phase: Create a Vision Topics: - Energy Access, Finance Resource Type: Publications User Interface: Website Website: www.energy.eu/publications/LDNA23284ENC_002.pdf Cost: Free Language: English This report sets out the main findings of the discussions carried out by the Developing Countries Group of the European Photovoltaic (PV) Technology Platform. In particular, the findings of identifying and defining an

264

A soil moisture assimilation scheme using satellite-retrieved skin temperature in meso-scale weather forecast model  

Science Journals Connector (OSTI)

A thermodynamically consistent soil moisture assimilation scheme for clear sky and snow free conditions has been developed for the meso-scale modeling system in the Arctic region by using satellite-derived skin temperatures. Parallel control and sensitivity modeling experiments were designed and their results demonstrated that the assimilation scheme successfully improves the soil moistures that were deliberately perturbed initially, indicating capability of the scheme to correct bias in the soil moisture initialization. Moreover, the resultant benefit of this assimilation scheme does not only lie in the improvement of soil moisture; the skin temperature also consequently exhibits improvements in a thermodynamic consistency. A real application of the assimilation scheme with satellite-retrieved skin temperature exhibited noticeable positive impacts on the modeling simulation and weather forecast; the model obviously captured meso-scale features of soil moistures as well as the skin temperatures. The warming tendency bias in original model simulations was removed to a considerable extent by this assimilation scheme.

Jing Zhang; Xiangdong Zhang

2010-01-01T23:59:59.000Z

265

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

266

An Adaptive Entanglement Distillation Scheme Using Quantum Low Density Parity Check Codes  

E-Print Network [OSTI]

Quantum low density parity check (QLDPC) codes are useful primitives for quantum information processing because they can be encoded and decoded efficiently. Besides, the error correcting capability of a few QLDPC codes exceeds the quantum Gilbert-Varshamov bound. Here, we report a numerical performance analysis of an adaptive entanglement distillation scheme using QLDPC codes. In particular, we find that the expected yield of our adaptive distillation scheme to combat depolarization errors exceed that of Leung and Shor whenever the error probability is less than about 0.07 or greater than about 0.28. This finding illustrates the effectiveness of using QLDPC codes in entanglement distillation.

K. H. Ho; H. F. Chau

2008-07-14T23:59:59.000Z

267

Crystal-liquid interfacial free energy of hard spheres via a novel thermodynamic integration scheme  

E-Print Network [OSTI]

The hard sphere crystal-liquid interfacial free energy, ($\\gamma_{\\rm cl}$), is determined from molecular dynamics simulations using a novel thermodynamic integration (TI) scheme. The advantage of this TI scheme compared to previous methods is to successfully circumvent hysteresis effects due to the movement of the crystal-liquid interface. This is accomplished by the use of extremely short-ranged and impenetrable Gaussian flat walls which prevent the drift of the interface while imposing a negligible free-energy penalty. We find that it is crucial to analyze finite-size effects in order to obtain reliable estimates of $\\gamma_{\\rm cl}$ in the thermodynamic limit.

Benjamin, Ronald

2014-01-01T23:59:59.000Z

268

An efficient secure data dissemination scheme for grid structure Wireless Sensor Networks  

Science Journals Connector (OSTI)

Wireless Sensor Networks (WSNs) have been widely applied to sensing data from different environments. Owing to the resource limitations of WSNs, the data may be tampered easily during transmission. It may happen that data reach incorrect destinations or received incorrect data. It is an important issue for WSNs that base stations must receive correct data and ensure the data confidentiality. This paper proposes an efficient key management scheme and employs symmetric cryptography to secure the messages. In addition, we propose a secure routing protocol to provide a robust route. The proposed scheme further guarantees the destination should receive the data correctly.

Yu-Kai Hsiao; Ren-Junn Hwang

2010-01-01T23:59:59.000Z

269

Towards a new scheme for parametrisation of deep convection in NAME III  

Science Journals Connector (OSTI)

This paper describes an updated scheme for parametrisation of atmospheric convection to be used in the Met Office Atmospheric Dispersion Model (NAME III). In this scheme, the vertical transport of particles due to convection is represented in a 1-dimensional model based on a 'mass-flux' approach. Empirical formulas are used to obtain the mass fluxes and the convective precipitation is used for closure. Results compared with the mass fluxes from the single column version of the Met Office's NWP model show good agreement. Lastly, an alternative method to estimate the mass fluxes by calculating a dilute parcel ascent is also discussed.

Elena Meneguz; David J. Thomson

2014-01-01T23:59:59.000Z

270

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

271

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

272

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

273

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

274

A Distributed Scheme for Efficient Pair-wise Comparison of Complete Genomes  

E-Print Network [OSTI]

#12;48 A Distributed Scheme for Efficient Pair-wise Comparison of Complete Genomes Valerian S}@mcs.kent.edu 1 Corresponding author Abstract The comparisons of newly sequenced genomes against a genome and a CORBA-based implementation to compare and align gene sequences in large complete genomes, using multiple

Bansal, Arvind K.

275

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

276

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

277

Efficient, Nearly Optimum Addressing Schemes Based on Partitioning the Constellation into the Union of Blocks  

E-Print Network [OSTI]

. In selecting the boundary of a constellation (shaping region), the objective is to minimize the average energyEfficient, Nearly Optimum Addressing Schemes Based on Partitioning the Constellation into the Union of equal volume. The 2-D shells are indexed in the radial direction from zero to K -1. The average energy

Kabal, Peter

278

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

279

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.

280

A Simple Asymptotically Optimal Joint Energy Allocation and Routing Scheme in Rechargeable  

E-Print Network [OSTI]

of the optimum. Through simulations with replenishment profile traces for solar and wind energy, we numerically is limited battery of sensor nodes. Energy harvesting from various natural sources, such as solar1 A Simple Asymptotically Optimal Joint Energy Allocation and Routing Scheme in Rechargeable Sensor

Sinha, Prasun

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

Comparative Study of Two Congestion Pricing Schemes -Auction and T^atonnement  

E-Print Network [OSTI]

-sensitive component to motivate rate and service adaptation by applications with elastic demand. The network the aggregate user demand meets bandwidth sup- ply. T^atonnement-based pricing algorithms have been exploredComparative Study of Two Congestion Pricing Schemes - Auction and T^atonnement Xin Wang Department

Wang, Xin

282

Correction schemes to improve the dynamical aperture of the Main Injector  

SciTech Connect (OSTI)

Tracking simulations have revealed that the dominant factors limiting the dynamical aperture of the Main Injector are the large octupole component and the random errors in the recycled Main Ring quadrupoles. This paper describes a correction scheme that reduces the effect of these errors on the performance of the Fermilab Main Injector, especially for the slow extraction operation.

Mishra, C.S.; Harfoush, F.A.

1993-07-01T23:59:59.000Z

283

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

284

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

285

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

286

FLUX-GRADIENT AND SOURCE TERM BALANCING FOR CERTAIN HIGH RESOLUTION SHOCK-CAPTURING SCHEMES  

E-Print Network [OSTI]

generation. Key Words: shallow water equations, high resolution shock capturing schemes, conservation Introduction Many practical problems involving shallow water flow in oceanography and atmospheric sciences in [8], for the shallow water system. We show that the use of two different Jacobians at cell interfaces

287

Evaluation of three spatial discretization schemes with the Galewsky et al. test  

E-Print Network [OSTI]

. This makes them an attractive alternative to Eulerian atmospheric models. However, the generation of high Particle Methods (HPM) and the Nambu discretiza- tion applied to shallow-water equations on the sphere For long-term simulations of atmospheric flows, it is essential to develop numerical schemes that retain

Reich, Sebastian

288

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

289

Gauge-invariant truncation scheme for the Schwinger-Dyson equations of QCD  

Science Journals Connector (OSTI)

We present a new truncation scheme for the Schwinger-Dyson equations of QCD that respects gauge invariance at any level of the dressed loop expansion. When applied to the gluon self-energy, it allows for its nonperturbative treatment without compromising the transversality of the solution, even when entire sets of diagrams (most notably the ghost loops) are omitted or treated perturbatively.

D. Binosi and J. Papavassiliou

2008-03-19T23:59:59.000Z

290

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

291

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.

292

Revision of the underfrequency load-shedding scheme of the Slovenian power system  

Science Journals Connector (OSTI)

The main motivation for the study presented in this paper was the numerous blackouts that occurred in 2003. After the Italian blackout, which almost caused a collapse of the Slovenian power system as well, it became clear that some automatic procedures, with underfrequency load-shedding being one of the most important ones, need to be thoroughly revised. The paper studies three different load-shedding schemes. Two of them use the frequency decline gradient, which is currently not implemented in the Slovenian power system. The first two schemes have fixed maximal amount of load to be shed, while the third one sheds more loads if the frequency gradient is greater, which makes this scheme successful also in those case where the first two fail due to insufficient load-shedding. This is application of known techniques to a specific case of finding the best load-shedding scheme in Slovenian power system to avoid blackout. The simulations were performed on a detailed model of the Slovenian power system using the software package EUROSTAG. The proposed underfrequency relays settings conform to the UCTE Operation handbook.

Toma Tomi?; Gregor Verbi?; Ferdinand Gubina

2007-01-01T23:59:59.000Z

293

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

294

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.

295

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

296

A Dynamic Attribute-Based Load Shedding Scheme for Data Stream Management Systems  

E-Print Network [OSTI]

A Dynamic Attribute-Based Load Shedding Scheme for Data Stream Management Systems Amit Ahuja of tuples, becomes imperative in data stream load shedding, since shedding a complete tuple would lead to shedding informative attribute data along with less-informative attribute data in the tuple. Our load

Ng, Yiu-Kai Dennis

297

A management scheme for improving transportation efficiency and contributing to the enhancement of the social fabric  

Science Journals Connector (OSTI)

The continuously increasing need for mobility has brought about not only significant facilities in several aspects of human initiative, but also growing traffic congestions, a phenomenon that leads to unpleasant everyday situations at a short time level, ... Keywords: Car pooling, Management scheme, Social fabric, Transportation efficiency, User profile

Y. Kritikou; G. Dimitrakopoulos; E. Dimitrellou; P. Demestichas

2009-11-01T23:59:59.000Z

298

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

299

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

300

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.

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

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

302

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

303

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

304

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

305

Cyber-Physical Systems for Optimal Energy Management Scheme of Autonomous Electric Vehicle  

Science Journals Connector (OSTI)

......consumption status and demand from AEV and charging...vehicle; energy management; event-based...the optimal energy management scheme for AEV with...of CPS for energy management framework (EMF...the consumption side to collect and analyze...consumption status and demand, and then make......

Jiafu Wan; Hehua Yan; Di Li; Keliang Zhou; Lu Zeng

2013-08-01T23:59:59.000Z

306

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

307

Application of High-Order Energy Stable Flux Reconstruction Schemes to the Euler Equations  

E-Print Network [OSTI]

and Astronautics 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 4, Stanford, CA, 94305 The authors recently identified an infinite range of high-order energy stable flux method). Identification of such schemes represents a significant advance in terms of understanding why

Jameson, Antony

308

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

309

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

310

A Mesochronous Pipeline Scheme for High Performance Low Power Digital Systems  

E-Print Network [OSTI]

A Mesochronous Pipeline Scheme for High Performance Low Power Digital Systems Suryanarayana B University Pullman, WA 99164-2752 Email: {statapud, jdelgado}geecs.wsu.edu Abstract- A mesochronous pipeline mesochronous pipeline over conventional pipeline architecture. in size (longer wires with increased parasitic

Delgado-Frias, José G.

311

Intercomparison of Bulk Microphysics Schemes in Model Simulations of Polar Lows  

Science Journals Connector (OSTI)

Four spiraliform polar lows, two over the Sea of Japan and two over the Nordic Seas, were simulated with the Weather Research and Forecasting (WRF) model. Five mixed-phase bulk microphysics schemes (BMS) provided with WRF were run respectively in ...

Longtao Wu; Grant W. Petty

2010-06-01T23:59:59.000Z

312

Performance of an Eddy DiffusivityMass Flux Scheme for Shallow Cumulus Boundary Layers  

Science Journals Connector (OSTI)

Comparisons between single-column (SCM) simulations with the total energymass flux boundary layer scheme (TEMF) and large-eddy simulations (LES) are shown for four cases from the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS) ...

Wayne M. Angevine; Hongli Jiang; Thorsten Mauritsen

2010-07-01T23:59:59.000Z

313

A Parallel Rolling Horizon Scheme for Large Scale Security Constrained Unit Commitment Problems  

E-Print Network [OSTI]

grid [1]. To maintain the security of the electric grid, a variety of security constrained, for exampleA Parallel Rolling Horizon Scheme for Large Scale Security Constrained Unit Commitment Problems and security constraints. In this paper, we improve the traditional Lagrange Relaxation (LR) approach

Feinberg, Eugene A.

314

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

315

Periodic Charging Scheme for Fixed-Priority Real-Time Systems with Renewable Energy  

E-Print Network [OSTI]

to the limited capacity of the energy storage unit. With energy harvesting, in theory it becomes possiblePeriodic Charging Scheme for Fixed-Priority Real-Time Systems with Renewable Energy Mario Bambagini, Fairfax, VA, USA e-mail: aydin@cs.gmu.edu Abstract--Energy harvesting systems are gaining increasing

Aydin, Hakan

316

Optimal hierarchical pricing schemes for wireless network usage and resource allocation  

E-Print Network [OSTI]

some costs associated with the wireless network usage such as electricity cost, office renting costOptimal hierarchical pricing schemes for wireless network usage and resource allocation Andrey in wireless networks. For instance, before transmitting customer data, a network operator has to buy some

Paris-Sud XI, Université de

317

Active Scheme to Measure Throughput of Wireless Access Link in Hybrid Wired-Wireless Network  

E-Print Network [OSTI]

, at the wireless The authors are with Networking Research Laboratory, Department of Electrical and Computer1 Active Scheme to Measure Throughput of Wireless Access Link in Hybrid Wired-Wireless Network to measure the download throughput of an IEEE 802.11 wireless access link in a hybrid wired-wireless network

Rojas-Cessa, Roberto

318

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.

319

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 and efficiency, there are new challenges in protecting sensitive and/or private data carried in these devices to decrypt the data, the cryptographic operation should be efficient for legitimate users and minimize

Chen, Yu

320

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

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321

Stateful Public-Key Encryption Schemes Forward-Secure Against State Exposure  

Science Journals Connector (OSTI)

......When StPE schemes are deployed in an environment like Smart Grid, which consists of small devices including smart meters...X., Misra, S., Xue, G. andYang, D. (2012) Smart Grid--the New and Improved Power Grid:A Survey. IEEE......

Joonsang Baek; Quang Hieu Vu; Abdulhadi Shoufan; Andrew Jones; Duncan S. Wong

2013-04-01T23:59:59.000Z

322

An Adaptive IEEE 802.15.4 Data Transmission Scheme for Smart Grid Applications  

Science Journals Connector (OSTI)

IEEE 802.15.4 networks (also known as ZigBee networks) has the features of low data rate and low power consumption. In this paper we propose an adaptive data transmission scheme which is based on CSMA/CA access c...

Zhongzhi Che; Jianhua He; Zuoyin Tang; Yi Zhou

2011-01-01T23:59:59.000Z

323

A unified gas kinetic scheme with moving mesh and velocity space adaptation  

Science Journals Connector (OSTI)

There is great difficulty for direct Boltzmann solvers to simulate high Knudsen number flow due to the severe steep slope and high concentration of the gas distribution function in a local particle velocity space. Local mesh adaptation becomes necessary ... Keywords: Adaptive velocity space, Moving mesh, Rarefied gas, Unified gas kinetic scheme

Songze Chen; Kun Xu; Cunbiao Lee; Qingdong Cai

2012-08-01T23:59:59.000Z

324

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

325

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

326

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

327

IMPROVED REACTION SCHEME FOR SPATIAL STOCHASTIC SIMULATIONS WITH SINGLE MOLECULE DETAIL  

E-Print Network [OSTI]

IMPROVED REACTION SCHEME FOR SPATIAL STOCHASTIC SIMULATIONS WITH SINGLE MOLECULE DETAIL Michael of particle tracking in molecule po- sitions and bimolecular reactions. Bimolecular reactions depend on the collision of two molecules, but the time of a first order (e.g. decay) event can be pre

Lygeros, John

328

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

E-Print Network [OSTI]

Owing to energy stability, we show that the scheme is stable in ... ? > 0 is a surface tension parameter; u is the fluid velocity; p is a pressure; ?() > 0 ...... As a second test of buoyancy-driven (Stokes) flow, we consider the case of a single bubble.

2012-06-09T23:59:59.000Z

329

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

330

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

331

Sector reform impact on rural drinking water schemes -A case study from Raigad district in Maharashtra  

E-Print Network [OSTI]

- Sector reform impact on rural drinking water schemes - A case study from Raigad district of Technology, Bombay Abstract: This paper analyses the ground level impact of the national rural drinking water policy in Maharashtra. We observe that compared to what is reflected in the national rural drinking water

Sohoni, Milind

332

A Partial Memory Protection Scheme for Higher Effective Yield of Embedded Memory for Video Data  

E-Print Network [OSTI]

A Partial Memory Protection Scheme for Higher Effective Yield of Embedded Memory for Video Data the on-chip embedded memory will occupy most of the silicon real estate. As the technology proceeds into very deep submicron, the yield of SoCs will drop sharply mainly because of the on-chip memory failure

Eltawil, Ahmed

333

An Efficient Scheme for Lossy Realtime Audio Data Compression 3922 (O-3) Robert C. Maher  

E-Print Network [OSTI]

be obtained by sending request and remittance to the Audio Engineering Society, 60 East 42nd St., New York, is not permitted without direct permission from the Journal of the Audio Engineering Society. AN AUDIO ENGINEERINGAn Efficient Scheme for Lossy Realtime Audio Data Compression 3922 (O-3) Robert C. Maher University

Maher, Robert C.

334

A SEMI-IMPLICIT SCHEME FOR STATIONARY STATISTICAL PROPERTIES OF THE INFINITE PRANDTL NUMBER MODEL  

E-Print Network [OSTI]

, this is the first rigorous result on convergence of stationary statistical properties of numerical schemes, and many models for the atmosphere, ocean, weather and climate etc. The dynamics of these systems naturally turn to numerical methods, especially with today's power- ful computers and ever advancing

Wang, Xiaoming

335

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

336

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

337

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

338

Benefits of a Fourth Ice Class in the Simulated Radar Reflectivities of Convective Systems Using a Bulk Microphysics Scheme  

Science Journals Connector (OSTI)

Current cloud microphysical schemes used in cloud and mesoscale models range from simple one-moment to multimoment, multiclass to explicit bin schemes. This study details the benefits of adding a fourth ice class (frozen drops/hail) to an already ...

Stephen E. Lang; Wei-Kuo Tao; Jiun-Dar Chern; Di Wu; Xiaowen Li

2014-10-01T23:59:59.000Z

339

LightFlood: an Efficient Flooding Scheme for File Search in Unstructured Peer-to-Peer Systems  

E-Print Network [OSTI]

. Our analysis and simulation results show that the Light- Flood scheme provides a low overheadLightFlood: an Efficient Flooding Scheme for File Search in Unstructured Peer-to-Peer Systems Williamsburg, VA 23187, USA¡ sjiang, lguo, zhang¢ @cs.wm.edu Abstract "Flooding" is a fundamental operation

Jiang, Song

340

Optimal Operation Scheme for a Cogeneration System Promoted from an Emergency Standby System Combined with Absorption Chiller  

Science Journals Connector (OSTI)

A novel optimal operation scheme for a cogeneration system that is promoted from an emergency standby system combined with absorption chiller is introduced. The fuel cost, Time-of-use (TOU) tariff and various operational constrains are taken into account ... Keywords: cogeneration system, Time-of-use tariff, optimal operation scheme

Shyi-Wen Wang

2010-12-01T23:59:59.000Z

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.


341

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

Science Journals Connector (OSTI)

A numerical scheme for treating fluid-land boundaries in inviscid shallow water flows is derived that conserves the domain-summed mass, energy, vorticity, and potential enstrophy in domains with arbitrarily shaped boundaries. The boundary scheme is derived ... Keywords: Boundary conditions, Conservation, Energy, Potential enstrophy, Shallow water equations, Vorticity

G. S. Ketefian; M. Z. Jacobson

2009-01-01T23:59:59.000Z

342

Simple scheme for generating four-photon polarization-entangled decoherence-free states using spontaneous parametric down-conversions  

SciTech Connect (OSTI)

We propose a simple scheme for the generation of four-photon polarization-entangled decoherence-free states by using a pair of spontaneous parametric down-conversions and one tunable beam splitter. The scheme is based on post-selection strategy and feasible by current experimental technology.

Zou Xubo; Shu Jing; Guo Guangcan [Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026 (China)

2006-05-15T23:59:59.000Z

343

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

344

Symposium 24 Photosynthesis Educatio 827 Evolution of the Z-Scheme of Electron Transport in Oxygenic Photosynthesis  

E-Print Network [OSTI]

Symposium 24 Photosynthesis Educatio 827 Evolution of the Z-Scheme of Electron Transport in Oxygenic Photosynthesis Govindjeea *, Lars Olof Bj�rnb,c , K�rin Nickelsend a Biochemistry, Biophysics transport; Photosynthetic unit; Photosynthesis; Photosystem; Z-scheme Introduction Today, the Z

Govindjee

345

Classification Scheme  

E-Print Network [OSTI]

Applications - OR and Management Sciences ... Applications - Science and Engineering. Basic Sciences ... Theory; Applications; Stochastic Approaches; Other.

346

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

347

Aerothermal Effects of Interfacial Leakage and Film Cooling Schemes with Endwall and Leading Edge Contouring  

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

Aerothermal Effects of Interfacial Aerothermal Effects of Interfacial Leakage and Film Cooling Schemes with Endwall and Leading Edge Contouring T.W. Simon and R. J. Goldstein Principal Investigators SCIES Project U/02-01-SR096/DOE PR DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manger, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (5/1/2002, 36 months) $459,007 Total Contract Value ($430,619 DOE) Gas Turbine Technology Needs and Project Objectives * Improved performance and reliability - More effective cooling of turbine first stage passage * Improve schemes for injection of endwall coolant * Realize cooling benefits of leakage flows * Understand effects of component misalignment - Reduced secondary flows * Improve with endwall axial contouring and airfoil/endwall fillets

348

Posters Objective Analysis Schemes to Monitor Atmospheric Radiation Measurement Data in Near Real-Time  

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

7 7 Posters Objective Analysis Schemes to Monitor Atmospheric Radiation Measurement Data in Near Real-Time M. Splitt University of Oklahoma Norman, Oklahoma Recent work in this area by Charles Wade (1987) lays out the groundwork for monitoring data quality for projects with large networks of instruments such as the Atmospheric Radiation Measurement (ARM) Program. Wade generated objectively analyzed fields of meteorological variables (temperature, pressure, humidity, and wind) and then compared the objectively analyzed value at the sensor location with the value produced by the sensor. Wade used a Barne's objective analysis scheme to produce objective data values for a given meteorological variable (q) in two- dimensional space. The objectively analyzed value should

349

Energy efficient node addressing scheme in self-organised sensor networks  

Science Journals Connector (OSTI)

Sensor networks are envisioned to support autonomous and spontaneous networking for a wide range of applications such as environment monitoring. Due to energy constraints, it is difficult for wireless sensor nodes to handle heavy protocol stacks with a large protocol overhead. In this paper, we present a novel address auto configuration scheme, which we call SMallest-size sensor AddRess auToconfiguration scheme (SMART), to configure potential shortest-size local unique addresses for sensor networks with energy efficiency. SMART achieves energy efficiency in three ways. First, it automatically configures node address within a potential smallest address space for a number of sensor nodes, in order to achieve the small address size. Second, it avoids address conflicts during the address configuration. Third, it configures addresses with a small configuration overhead and achieves load balance among sensor nodes.

Rui Teng

2009-01-01T23:59:59.000Z

350

Novel scheme for the preparation of transmission electron microscopy specimens with a focused ion beam  

Science Journals Connector (OSTI)

A novel scheme is presented for the preparation of cross?section transmission electron microscopy(TEM) specimens with a focused ion beam(FIB). This scheme is particularly suitable for highly structured substrates such as integrated circuits. The specimen is made by cutting a thin slice of material from the substrate by sputtering with the FIB. The position of the specimen can be selected with submicron resolution. The specimen is subsequently removed from the substrate and transported to a standard TEM?specimen holder. A specimen ready for TEM inspection can be prepared within 2 hs. The samples are of excellent quality as is illustrated with cross?section TEM images of FIB?made specimens of an electrically programmable read?only memory.

M. H. F. Overwijk; F. C. van den Heuvel; C. W. T. Bulle?Lieuwma

1993-01-01T23:59:59.000Z

351

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

352

A lattice-Boltzmann relaxation scheme for coupled convection-radiation systems  

SciTech Connect (OSTI)

The convection-radiation effects in thermal fluid flows are studied based on the lattice-Boltzmann method. Nine-velocity flow and temperature distributions are used to obtain the mass, momentum and energy equations in thermal incompressible flows by studying equivalent moment systems. The radiative heat flux in the energy equation is obtained using the discrete-ordinates solution of the radiative transfer equation. A non-oscillatory relaxation scheme is used to solve the coupled moment equations. Such schemes have the advantage of being simple and easy to implement. Numerical results are presented for two test examples on coupled convection-radiation flows in two dimensional enclosures. Detailed simulation results at different flow and radiative regimes, as well as benchmark solutions, are presented and discussed.

Banda, Mapundi K. [School of Mathematical Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209 Pietermaritzburg (South Africa)], E-mail: bandamk@ukzn.ac.za; Klar, Axel [AG Technomathematik, Fachbereich Mathematik, Technische Universitaet Kaiserslautern, 67663 Kaiserslautern (Germany)], E-mail: klar@itwm.fhg.de; Seaid, Mohammed [AG Technomathematik, Fachbereich Mathematik, Technische Universitaet Kaiserslautern, 67663 Kaiserslautern (Germany)], E-mail: seaid@mathematik.uni-kl.de

2007-10-01T23:59:59.000Z

353

Practical scheme for a light-induced gauge field in an atomic Bose gas  

Science Journals Connector (OSTI)

We propose a scheme to generate an Abelian gauge field in an atomic gas using two crossed laser beams. If the internal atomic state follows adiabatically the eigenstates of the atom-laser interaction, Berrys phase gives rise to a vector potential that can nucleate vortices in a Bose gas. The present scheme operates even for a large detuning with respect to the atomic resonance, making it applicable to alkali-metal atoms without significant heating due to spontaneous emission. We test the validity of the adiabatic approximation by integrating the set of coupled Gross-Pitaevskii equations associated with the various internal atomic states, and we show that the steady state of the interacting gas indeed exhibits a vortex lattice, as expected from the adiabatic gauge field.

Kenneth J. Gnter, Marc Cheneau, Tarik Yefsah, Steffen P. Rath, and Jean Dalibard

2009-01-21T23:59:59.000Z

354

LHC luminosity upgrade with large Piwinski angle scheme: a recent look  

SciTech Connect (OSTI)

Luminosity upgrade at the LHC collider using longitudinally flat bunches in combination with the large crossing angle (large Piwinski angle scheme) is being studied with renewed interest in recent years. By design, the total beam-beam tune shift at the LHC is less than 0.015 for two interaction points together. But the 2010-11 3.5 TeV collider operation and dedicated studies indicated that the beam-beam tune shift is >0.015 per interaction point. In view of this development we have revisited the requirements for the Large Piwinski Angle scheme at the LHC. In this paper we present a new set of parameters and luminosity calculations for the desired upgrade by investigating: (1) current performance of the LHC injectors, (2) e-cloud issues on nearly flat bunches and (3) realistic beam particle distributions from longitudinal beam dynamics simulations. We also make some remarks on the needed upgrades on the LHC injector accelerators.

Bhat, C.M.; /Fermilab; Zimmermann, f.; /CERN

2011-09-01T23:59:59.000Z

355

Initial Evaluation of the Cumulus Potential Scheme at the ACRF SGP Site  

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

Meeting, Meeting, 12 March 2008 Initial Evaluation of the Cumulus Potential Scheme at the ACRF SGP Site Larry K. Berg, William I. Gustafson Jr., and Evgueni I. Kassianov Pacific Northwest National Laboratory ARM Science Team Meeting, 12 March 2008 Where are We Going? Development Simulation Evaluation Observations ARM Science Team Meeting, 12 March 2008 Development: Coupling Clouds to the Convective Boundary Layer * Shallow cumuli are turbulently coupled to the planetary boundary layer 4 3 2 1 0 Height (km) 6 5 4 3 2 1 0 Distance (km) Simulation courtesy of M. Ovtchinnikov ARM Science Team Meeting, 12 March 2008 Development: Coupling Clouds to the Convective Boundary Layer * Parameterization should represent this coupling * The Cumulus Potential (CuP) scheme is one way - Accounts for sub-grid

356

Geometric Integration Of The Vlasov-Maxwell System With A Variational Particle-in-cell Scheme  

SciTech Connect (OSTI)

A fully variational, unstructured, electromagnetic particle-in-cell integrator is developed for integration of the Vlasov-Maxwell equations. Using the formalism of Discrete Exterior Calculus [1], the field solver, interpolation scheme and particle advance algorithm are derived through minimization of a single discrete field theory action. As a consequence of ensuring that the action is invariant under discrete electromagnetic gauge transformations, the integrator exactly conserves Gauss's law.

J. Squire, H. Qin and W.M. Tang

2012-03-27T23:59:59.000Z

357

Discussion of an Optimization Scheme for the Ground Source Heat Pump System of HVAC  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Renewable Energy Resources and a Greener Future Vol.VIII-13-3 Discussion of an Optimization Scheme for the Ground Source Heat Pump System of HVAC Wei Mu Suilin Wang Shuyuan Pan Yongzheng Shi Master Student... the Jurisdiction of Beijing Municipality (BJE10016200511). REFERENCES [1]Rongguang Wang,Yufeng Zhang,Yang,Xiaotong Zheng. Study on Direct Use Of Geothermal Energy For Heating And Its Energy Efficency Effects [J]. ACTA ENERGIAE SOLARIS SINICA, 2002, 23...

Mu, W.; Wang, S.; Pan, S.; Shi, Y.

2006-01-01T23:59:59.000Z

358

A Comparison of Time-Space Schemes for Graphical Models Robert Mateescu and Rina Dechter  

E-Print Network [OSTI]

models that can accom- modate trade-offs between time and space: 1) AND/OR Adaptive Caching (AOC(i)); 2 show that AOC(i) is better than the vanilla ver- sions of both VEC(i) and TDC(i), and use the guid- ing principles of AOC(i) to improve the other two schemes. Finally, we show that the improved ver- sions of VEC

Dechter, Rina

359

Control scheme for power modulation of a free piston Stirling engine  

SciTech Connect (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

360

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

E-Print Network [OSTI]

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... requirements. 4. Plow Sheet. 5. Description of operation. 6. Special Features. St. Louis, 'Mo. June 6, 1910. Potosi Lead, Baryta & Mercantile Company, Potosi, Missouri. 'Gentlemen:- * (Attention - Mr. Horris.) We are furnishing you herewith proposals...

Hansen, George T.

1911-01-01T23:59:59.000Z

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.


361

Prime Number-Based Hierarchical Data Labeling Scheme for Relational Databases  

E-Print Network [OSTI]

, yahoo.com), and multiple sub-domains (e.g. maps.google.com, mail.google.com, tv.yahoo.com). Both of these labeling schemes are variations of the materialized path model discussed in section 2.3. Each one specifies the path from the root................................................................... 36 Figure 4.3: rPNL Parent-Label Size Growth .............................................................. 37 Figure 5.1: CNN Tree Visualization (Aharef 2007) ................................................... 43 Figure 5.2: Yahoo Tree...

Morozov, Serhiy

2007-12-13T23:59:59.000Z

362

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

363

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

364

Optimization Research of Refueled Scheme Based on Fuel Price Prediction of the Voyage Charter  

Science Journals Connector (OSTI)

Fuel cost is the key element of ship owners to control operating costs in the business of voyage charter. While fuel price changes frequently over time and also ocean shipping transport cycle is long, and therefore how to develop the most economical refueling scheme among the ports of call becomes one of the significant issues that the ship owners concerning. This study addresses the refueling scheme optimization problem for voyage charter operators from the perspective of the ship owner. First, an ARMA-based model was proposed to forecast a time serials of the fuel prices. Then, to maximize the shipping operation profit, the non-linear programming model is formulated to solve the optimal refueling scheme where to refuel and how much to refuel. Finally, a case study on a Pacific Ocean-circle route under multi-charter voyage contracts is conducted for a dry bulk cargo ship. The results indicate that the optimal fuel supply program compared with conventional refueling cost saves 263,400 USD, accounting for 14.3% of the total operating profit.

Peng JIA; Xueshan SUN; Zhongzhen YANG

2012-01-01T23:59:59.000Z

365

First order comparison of numerical calculation and two different turtle input schemes to represent a SLC defocusing magnet  

SciTech Connect (OSTI)

Correcting the dispersion function in the SLC north arc it turned out that backleg-windings (BLW) acting horizontally as well as BLW acting vertically have to be used. In the latter case the question arose what is the best representation of a defocusing magnet with excited BLW acting in the vertical plane for the computer code TURTLE. Two different schemes, the 14.-scheme and the 20.-scheme were studied and the TURTLE output for one ray through such a magnet compared with the numerical solution of the equation of motion; only terms of first order have been taken into account.

Jaeger, J.

1983-07-14T23:59:59.000Z

366

A new GA optimised Reliability Ratio based integration weight estimation scheme for decision fusion Audio-Visual Speech Recognition  

Science Journals Connector (OSTI)

Audio-Visual Speech Recognition (AVSR) using acoustic and visual signals of speech have received attention recently because of its robustness in noisy environments. An important issue in decision fusion AVSR systems is the determination of appropriate integration weight for better performance. A new Genetic Algorithm (GA) based scheme to obtain an appropriate integration weight is proposed here. The performance of the proposed scheme is demonstrated for commonly used mobile functions isolated word recognition via multi-speaker database experiment. The results show that the proposed scheme improves robust recognition accuracy over conventional unimodal systems and other related bimodal systems, namely, Reliability ratio and Neural Network based AVSR systems.

R. Rajavel; P.S. Sathidevi

2011-01-01T23:59:59.000Z

367

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

368

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

369

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

370

Weather type dependent quality assessment of a satellite-based rainfall detection scheme for the mid-latitudes  

Science Journals Connector (OSTI)

The sensitivity of a recently published satellite-based rainfall detection scheme with differing frontal weather regimes is investigated for 676 precipitation scenes ... detected by the radar network of the Germa...

Boris Thies; Andreas Turek; Thomas Nauss

2010-08-01T23:59:59.000Z

371

Limited-Area Fourier Spectral Models and Data Analysis Schemes: Windows, Fourier Extension, Davies Relaxation, and All That  

Science Journals Connector (OSTI)

Regional spectral models have previously periodized and blended limited-area data through ad hoc low-order schemes justified by intuition and empiricism. By using infinitely differentiable window functions or bells borrowed from wavelet ...

John P. Boyd

2005-07-01T23:59:59.000Z

372

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.

373

1G/10G-EPON Compliant Scheme Combining ONU Energy Efficiency with QoS Performance  

Science Journals Connector (OSTI)

We propose a hybrid fixed/dynamic downstream scheduling scheme for 1G-EPON and 10G-EPON which enables ONU sleep mode operation for more than 90% of the time, at minor delay performance...

Kanonakis, Konstantinos; Zhang, Jingjing; Cvijetic, Neda; Tomkos, Ioannis; Wang, Ting

374

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

375

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

376

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

377

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

378

Simulation of heat pipe rapid transient performance using a multi-nodal implicit finite difference scheme  

E-Print Network [OSTI]

capillary pumping head is given by 2 0' Ap C XXX z erst where 6 = the surface tension of the working fluid r?rc = the minimum radius of curvature and is given for wire meshes as w+d r CIlt where w = width of pore d = wire diameter. The maximum... Difference Scheme James Samuel Peery, B. S. , Texas A&M University Chairman of Advisory Committee: Dr. Frederick R. Best A multi ? nodal, implicit, finite difference model, Heat Pipe Transient Analysis Code (HPTAC), has been developed to simulate heat...

Peery, James Samuel

2012-06-07T23:59:59.000Z

379

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

380

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

SciTech Connect (OSTI)

In situ oxidation with potassium permanganate has been widely evaluated, as a potential remediation method for dissolved or pure DNAPL in groundwater system. The goals of this study are (1) to elucidate the basic mechanisms by which potassium permanganate oxidizes common chlorinated solvents, various constituents in aqueous solution, and porous medium solids, and (2) to assess the potential for chemical oxidation by potassium permanganate to serve as a remedial scheme involving either source zone flooding or reactive barriers. The study is organized with a laboratory component that looks generally at the basic reaction processes and kinetics, and a theoretical component that is developing modeling tools appropriate for designing systems under field conditions.

Schwartz, Frank W.; Zhang, Hubao

2000-06-30T23:59:59.000Z

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

An interferometric signal demodulation scheme using zero crossings and an asynchronous clock  

E-Print Network [OSTI]

to recover P, . In many systems such as the fiber-optic gyroscope, we desire to measure Tz ? Tr to a resolution of the level of zero crossing jitter which is typically about lns. With this resolution, we would be able to measure small magnitude signals... which would cause changes in the zero crossings of the interferometric signal much less than lns. Clearly, unless the synchronous clock pulse period is reduced to around lns, this is not possible. An alternative is to use an asynchronous clock scheme...

McCain, Dennis M.

2012-06-07T23:59:59.000Z

382

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

383

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

384

Benchmarking of calculation schemes in APOLLO2 and COBAYA3 for WER lattices  

SciTech Connect (OSTI)

This paper presents solutions of the NURISP WER lattice benchmark using APOLLO2, TRIPOLI4 and COBAYA3 pin-by-pin. The main objective is to validate MOC based calculation schemes for pin-by-pin cross-section generation with APOLLO2 against TRIPOLI4 reference results. A specific objective is to test the APOLLO2 generated cross-sections and interface discontinuity factors in COBAYA3 pin-by-pin calculations with unstructured mesh. The VVER-1000 core consists of large hexagonal assemblies with 2 mm inter-assembly water gaps which require the use of unstructured meshes in the pin-by-pin core simulators. The considered 2D benchmark problems include 19-pin clusters, fuel assemblies and 7-assembly clusters. APOLLO2 calculation schemes with the step characteristic method (MOC) and the higher-order Linear Surface MOC have been tested. The comparison of APOLLO2 vs. TRIPOLI4 results shows a very close agreement. The 3D lattice solver in COBAYA3 uses transport corrected multi-group diffusion approximation with interface discontinuity factors of Generalized Equivalence Theory (GET) or Black Box Homogenization (BBH) type. The COBAYA3 pin-by-pin results in 2, 4 and 8 energy groups are close to the reference solutions when using side-dependent interface discontinuity factors. (authors)

Zheleva, N.; Ivanov, P.; Todorova, G.; Kolev, N. [Institute for Nuclear Research and Nuclear Energy, 1784 Sofia (Bulgaria); Herrero, J. J. [Departamento de Ingenieria Nuclear, Universidad Politecnica de Madrid, Calle Jose Gutierrez Abascal, 2, 28006 Madrid (Spain)

2013-07-01T23:59:59.000Z

385

How may a customer exploit the Bonneville Power Administration's new pricing scheme?  

Science Journals Connector (OSTI)

For more than half a century, the Bonneville Power Administration (BPA) has marketed electricity produced by the Federal Columbia River Power System (FCRPS) to its 'preference' customers in the Pacific Northwest. It has historically met the growing needs of its preference customers by augmenting the power provided by the FCRPS with market purchases and recovering its costs through its cost-based rates. The BPA, however, is preparing to implement a new pricing scheme intended to balance its historical commitment to supply its customers with low-cost power from the FCRPS with the need to signal that growing demands are met with increasingly expensive generation resources. This paper describes an opportunity that may exist for customers to exploit the scheme to obtain a larger share of low-cost federal power going forward. We show that when all customers take advantage of the opportunity, they find themselves in a form of the prisoner's dilemma whose outcome is a lose-lose Nash equilibrium, and discuss its managerial implications.

Doug Allen; Ira Horowitz; Chi-Keung Woo

2011-01-01T23:59:59.000Z

386

Photovoltaic array driven adjustable speed heat pump and power system scheme for a lunar based habitat  

SciTech Connect (OSTI)

A high reliability power system scheme, incorporating a photovoltaic power supply and adjustable speed heat pump for life support is presented in this paper. Initial design guidelines and also a description of the state of technology available is presented herein. The power supply scheme will be used as input to an Adjustable Speed Drive (ASD) which will be driving a heat pump. A brief study of various aspects of ASDs is presented, further a summary of the relative merits of different ASD systems presently in vogue is discussed. The advantages of using microcomputer based ASDs is widely understood and accepted. Of the three most popular drive systems, namely the Induction Motor Drive, Switched Reluctance Motor Drive and Brushless DC Motor Drive, any one may be chosen. The choice would depend on the nature of the application and its requirements. The suitability of the above mentioned drive systems and control techniques for a photovoltaic array driven ASD for an aerospace application are discussed. Also discussed are several possible power system designs for a potential lunar habitat.

Domijan, A. Jr.; Buchh, T.A. [Univ. of Florida, Gainesville, FL (United States). Dept. of Electrical and Computer Engineering] [Univ. of Florida, Gainesville, FL (United States). Dept. of Electrical and Computer Engineering

1998-12-01T23:59:59.000Z

387

Linear accelerator design study with direct plasma injection scheme for warm dense matter  

SciTech Connect (OSTI)

Warm Dense Matter (WDM) is a challenging science field, which is related to heavy ion inertial fusion and planetary science. It is difficult to expect the behavior because the state with high density and low temperature is completely different from ideal condition. The well-defined WDM generation is required to understand it. Moderate energy ion beams ({approx} MeV/u) slightly above Bragg peak is an advantageous method for WDM because of the uniform energy deposition. Direct Plasma Injection Scheme (DPIS) with a Interdigital H-mode (IH) accelerator has a potential for the beam parameter. We show feasible parameters of the IH accelerator for WDM. WDM physics is a challenging science and is strongly related to Heavy Ion Fusion science. WDM formation by Direct Plasma Injection Scheme (DPIS) with IH accelerator, which is a compact system, is proposed. Feasible parameters for IH accelerator are shown for WDM state. These represents that DPIS with IH accelerator can access a different parameter region of WDM.

Kondo, K.; Kanesue, T; Okamura, M.

2011-03-28T23:59:59.000Z

388

A mutual authentication and key establishment scheme for heterogeneous sensor networks supporting nodes mobility  

Science Journals Connector (OSTI)

In the last two decades, wireless sensor networks (WSNs) have greatly attracted the attention of the research community because their flexibility, adaptability and self-organising properties make them a technology solution suitable for diverse application scenarios ranging from home and industrial automation to military surveillance. Since these networks consist of resource constrained devices and can be deployed in remote and unattended areas, supporting security could represent a challenging task especially if mobility scenarios are taken into consideration. In this context, key management facilitates the adoption of cryptography techniques to support secure data communication and to protect the resource constrained devices from various security attacks. This paper specifically focuses on mobile heterogeneous wireless sensor networks consisting of mobile sensor nodes with few fixed sensor nodes and presents a mutual authentication and key management scheme suitable for the considered scenario. Analytical and OMNET++ simulation results show that the proposed scheme provides better network connectivity, consumes less memory, has better network resilience against attacks and introduces lower communication overhead compared to state-of-the-art solutions.

Sarmad Ullah Khan; Claudio Pastrone; Luciano Lavagno; Maurizio A. Spirito

2012-01-01T23:59:59.000Z

389

Power management of hybrid micro-grid system by a generic centralized supervisory control scheme  

Science Journals Connector (OSTI)

Abstract This paper presents a generic centralized supervisory control scheme for the power management of multiple power converters based hybrid micro-grid system. The system consists of wind generators, photovoltaic system, multiple parallel connected power converters, utility grid, ac and dc loads. Power management of the micro-grid is performed under two cases: grid mode and local mode. Central supervisory unit (CSU) generates command signal to ensure the power management during the two modes. In local mode, the dc loads in the acdc hybrid system can be controlled. In the case of grid mode operation, power flow between the utility grid and micro-grid is controlled. A novel feature of this paper is the incorporation of the multiple power converters. The generated command signal from the CSU can also control the operation of the multiple power converters in both grid and local modes. An additional feature is the incorporation of sodium sulfur battery energy storage system (NAS BESS) which is used to smooth the output power fluctuation of the wind farm. The effectiveness of the control scheme is also verified using real time load pattern. The simulation is performed in PSCAD/EMTDC.

Mir Nahidul Ambia; Ahmed Al-Durra; Cedric Caruana; S.M. Muyeen

2014-01-01T23:59:59.000Z

390

SiO2 Fracture: Chemomechanics with a Machine-Learning Hybrid QM/MM Scheme |  

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

Snapshot from a simulation of subcritical stress corrosion cracking in Snapshot from a simulation of subcritical stress corrosion cracking in silica in a wet environment, of the kind that will be carried out at the quantum mechanical level during this INCITE project. Silicon atoms are shown in grey, oxygen in red and hydrogen in white. The nanoscale mechanisms underlying stress corrosion cracking remain unclear and can only be elucidated with these kinds of non-uniform precision simulations, which will allow quantitative comparison with experiments for the first time. James Kermode, King's College London SiO2 Fracture: Chemomechanics with a Machine-Learning Hybrid QM/MM Scheme PI Name: James Kermode PI Email: King's College London Institution: james.kermode@kcl.ac.uk Allocation Program: INCITE Allocation Hours at ALCF: 125 Million

391

Set up an Arc Welding Code with Enthalpy Method in Upwind Scheme  

SciTech Connect (OSTI)

In this study, a numerical code with enthalpy method in upwind scheme is proposed to estimate the distribution of thermal stress in the molten pool, which is primarily determined by the type of the input power and travel speed of heating source. To predict the cracker deficit inside the workpiece, a simulated program satisfying the diagonal domination and Scarborough criterion provides a stable iteration. Meantime, an experimental performance, operated by robot arm 'DR-400' to provide a steady and continuous arc welding, was also conducted to verify the simulated result. By surveying the consistence of molten pool bounded by contrast shade and simulated melting contour on the surface of workpiece, the validity of model proposed to predict the thermal cracker has been successfully identified.

Ho, J.-E. [Department of Mechanical Engineering, National Ilan University, Ilan, Taiwan (China)

2010-05-21T23:59:59.000Z

392

Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter based on improved approximation schemes  

E-Print Network [OSTI]

We present Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter which are based on improved approximations schemes. The potential matrix elements have been adapted for isospin asymmetric nuclear matter in order to account for the proton-neutron mass splitting in a more consistent way. The proton properties are particularly sensitive to this adaption and its consequences, whereas the neutron properties remains almost unaffected in neutron rich matter. Although at present full Brueckner calculations are still too complex to apply to finite nuclei, these relativistic Brueckner results can be used as a guidance to construct a density dependent relativistic mean field theory, which can be applied to finite nuclei. It is found that an accurate reproduction of the Dirac-Brueckner-Hartree-Fock equation of state requires a renormalization of these coupling functions.

E. N. E. van Dalen; C. Fuchs; Amand Faessler

2006-12-14T23:59:59.000Z

393

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

394

Enhancing security of electronic health records through grid-based user authentication scheme  

Science Journals Connector (OSTI)

Medical research and electronic health record (EHR) maintenance involves large databases that are geographically distributed which calls naturally for a grid computing environment. Huge data in medical image analysis, storage and genome processing demand large medical data storage and computing power. Data sharing, software specialisation and data processing which occur in a heterogeneous way tend to make use of the grid computing environment for the medical field. The security solution for authentication in the existing grid environment is non-scalable. This major drawback can hinder the growth of the user community in the medical field. A simple user authentication scheme is proposed, which enhances the security of the overall system but takes less time for execution and lesser communication cost.

G. Jaspher Willsie Kathrine; E. Kirubakaran; Elijah Blessing Rajsingh

2014-01-01T23:59:59.000Z

395

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

396

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

397

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

398

High-resistance faults on a multi-terminal line: Analysis, simulated studies and an adaptive distance relaying scheme  

SciTech Connect (OSTI)

The presence of a T-connection to a third terminal can drastically affect the performance of a distance relay at the other terminals. Fault resistance, especially high fault resistance, makes this problem more severe and complicated. Detailed analysis of the apparent impedance for these cases as seen from the relaying point is derived and, based on extensive simulations of the infeed/outfeed and fault-resistance effects on the relay characteristics, an adaptive distance relaying scheme is proposed. A microprocessor based distance relay using this new technique can quickly respond to very-high-resistance faults with maximum coverage of the protected line. The validity of this new scheme has been confirmed by real-time testing on a prototype hardware scheme.

Xia, Y.Q. (Tianjin Univ. (China)); David, A.K.; Li, K.K. (Hong Kong Polytechnic, Kowloon (Hong Kong))

1994-01-01T23:59:59.000Z

399

Spectrally efficient hybrid multiplexing and demultiplexing schemes toward the integration of microwave and millimeter-wave radio-over-fiber systems in a WDM-PON infrastructure  

Science Journals Connector (OSTI)

Hybrid multiplexing and demultiplexing schemes with the capability to integrate microwave and millimeter-wave frequency radio-over-fiber signals in a wavelength division multiplexed...

Bakaul, Masuduzzaman; Nirmalathas, Ampalavanapillai; Lim, Christina; Novak, Dalma; Waterhouse, Rod

2009-01-01T23:59:59.000Z

400

Helical magnetocumulative generators with magnetic flux amplification: Comparative advantages of amplification schemes and the operational efficiency of generators with dynamic transformation  

Science Journals Connector (OSTI)

The amplification capabilities of two types of helical magnetocumulative generators based on the cascade scheme of magnetic flux amplification, generators with dynamic transformation, and those with transformer ....

A. A. Bazanov

2011-09-01T23:59:59.000Z

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.


401

Proposal for the award of a contract for the provision of third-party administration services for the CERN Health Insurance Scheme (CHIS)  

E-Print Network [OSTI]

Proposal for the award of a contract for the provision of third-party administration services for the CERN Health Insurance Scheme (CHIS)

2014-01-01T23:59:59.000Z

402

Controlling the tape's gap in robotized fiber placement process using a visual servoing external hybrid control scheme  

E-Print Network [OSTI]

of composites in the following areas: Aerospace & Defense (46 % of 8.100 t), Wind Turbines (74 % of 9.5 tACMA 2014 Controlling the tape's gap in robotized fiber placement process using a visual servoing external hybrid control scheme Maylis Uhart1,2 , Olivier Patrouix1 , Yannick Aoustin2 1 ESTIA, ESTIA

Boyer, Edmond

403

A convergent 2D finite-difference scheme for the Dirac-Poisson system and the simulation of graphene  

Science Journals Connector (OSTI)

We present a convergent finite-difference scheme of second order in both space and time for the 2D electromagnetic Dirac equation. We apply this method in the self-consistent Dirac-Poisson system to the simulation of graphene. The model is justified ... Keywords: Beam splitter, Dirac equation, Dirac-Poisson system, Finite differences, Graphene, Veselago lens

D. Brinkman; C. Heitzinger; P. A. Markowich

2014-01-01T23:59:59.000Z

404

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

405

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

406

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

E-Print Network [OSTI]

Lattice Boltzmann method and gas-kinetic BGK scheme in the low-Mach number viscous flow simulations 2002; received in revised form 23 April 2003; accepted 5 May 2003 Abstract Both lattice Boltzmann Elsevier B.V. All rights reserved. AMS: 65M06; 65N06; 76P05; 76T05 Keywords: Lattice Boltzmann method; Gas

Xu, Kun

407

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

408

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

409

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

410

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

411

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

412

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 7, JULY 2009 3577 A Collision-Free MAC Scheme for  

E-Print Network [OSTI]

for Wireless Communications, Depart- ment of Electrical and Computer Engineering, University of Waterloo, 200IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 7, JULY 2009 3577 A Collision-Free MAC Scheme for Multimedia Wireless Mesh Backbone Ping Wang, Member, IEEE, and Weihua Zhuang, Fellow, IEEE

Zhuang, Weihua

413

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

414

OSCAR API v2.1: Extensions for an Advanced Accelerator Control Scheme to a Low-Power  

E-Print Network [OSTI]

OSCAR API v2.1: Extensions for an Advanced Accelerator Control Scheme to a Low-Power Multicore API optimization and low-power optimization, has been developed. Furthermore, the OSCAR API has been also developed, AMD, Tilera, Fujitsu, Renesas Electronics, and so on. The OSCAR API v1.0 and v2.0 have been opened

Kasahara, Hironori

415

Enhancing and celebrating the Blackdown Hills The Neroche Scheme, named after a medieval forest and an Iron  

E-Print Network [OSTI]

a medieval forest and an Iron Age hill fort, covers 10,000 hectares on the Devon/Somerset border. The area and programmes of events. · Forest School: expanding the Blackdown Hills Forest School to provide outdoorNeroche Enhancing and celebrating the Blackdown Hills objectives The Neroche Scheme, named after

416

A Novel Invisible Color Image Watermarking Scheme using Image Adaptive Watermark Creation and Robust Insertion-Extraction  

E-Print Network [OSTI]

A Novel Invisible Color Image Watermarking Scheme using Image Adaptive Watermark Creation into visible and invisible approaches. While the visible methods provide means for overt asser- tion of ownership with logos, the invisible methods provide covert protection of these rights. Starting with IBM

Guturu, Parthasarathy

417

Models and a relaxation algorithm for continuous network design problem with a tradable credit scheme and equity constraints  

Science Journals Connector (OSTI)

The sustainable problems of transportation have become noticeable in the majority of cities worldwide. Many researchers are devoted themselves into traffic congestion. Generally, traffic congestion could be alleviated via increasing road capacity (supply) ... Keywords: Bilevel programming problem, Continuous network design problem (CNDP), Equity, Relaxation algorithm, Tradable credit scheme

Guangmin Wang; Ziyou Gao; Meng Xu; Huijun Sun

2014-01-01T23:59:59.000Z

418

Iterative Informed Audio Data Hiding Scheme Using Optimal Filter Alejandro LoboGuerrero, Patrick Bas, Jol Linard  

E-Print Network [OSTI]

Iterative Informed Audio Data Hiding Scheme Using Optimal Filter Alejandro LoboGuerrero, Patrick.bas@lis.inpg.fr,joel.lienard@lis.inpg.fr Abstract- Audio watermarking is a method that allows the insertion of an imperceptible mark on an audio, the audio data set represents the host that supports the embedded information and it is considered as "noise

Paris-Sud XI, Université de

419

Asymptotic Behavior of the Height in a Digital Search Tree and the Longest Phrase of the LempelZiv Scheme  

E-Print Network [OSTI]

the height of a digital search tree (DST in short) built from n random strings generated by an unbiased sequence into n phrases. We also analyze the longest phrase in the Lempel­Ziv scheme in which a string of the height exhibits an exponen­ tial of a Gaussian distribution (with an oscillating term) around the most

Szpankowski, Wojciech

420

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

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

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

422

Trigeneration scheme for energy efficiency enhancement in a natural gas processing plant through turbine exhaust gas waste heat utilization  

Science Journals Connector (OSTI)

The performance of Natural Gas Processing Plants (NGPPs) can be enhanced with the integration of Combined Cooling, Heating and Power (CCHP) generation schemes. This paper analyzes the integration of a trigeneration scheme within a NGPP, that utilizes waste heat from gas turbine exhaust gases to generate process steam in a Waste Heat Recovery Steam Generator (WHRSG). Part of the steam generated is used to power double-effect waterlithium bromide (H2OLiBr) absorption chillers that provide gas turbine compressor inlet air-cooling. Another portion of the steam is utilized to meet part furnace heating load, and supplement plant electrical power in a combined regenerative Rankine cycle. A detailed techno-economic analysis of scheme performance is presented based on thermodynamic predictions obtained using Engineering Equation Solver (EES). The results indicate that the trigeneration system could recover 79.7MW of gas turbine waste heat, 37.1MW of which could be utilized by three steam-fired H2OLiBr absorption chillers to provide 45MW of cooling at 5C. This could save approximately 9MW of electric energy required by a typical compression chiller, while providing the same amount of cooling. In addition, the combined cycle generates 22.6MW of additional electrical energy for the plant, while process heating reduces furnace oil consumption by 0.23 MSCM per annum. Overall, the trigeneration scheme would result in annual natural gas fuel savings of approximately 1879 MSCM, and annual operating cost savings of approximately US$ 20.9 million, with a payback period of 1year. This study highlights the significant economical and environmental benefits that could be achieved through implementation of the proposed integrated cogeneration scheme in NGPPs, particularly in elevated ambient temperature and humidity conditions such as encountered in Middle East facilities.

Sahil Popli; Peter Rodgers; Valerie Eveloy

2012-01-01T23:59:59.000Z

423

Efficient checkpointing schemes for depletion perturbation solutions on memory-limited architectures  

SciTech Connect (OSTI)

We describe a methodology for decreasing the memory footprint and machine I/O load associated with the need to access a forward solution during an adjoint solve. Specifically, we are interested in the depletion perturbation equations, where terms in the adjoint Bateman and transport equations depend on the forward flux solution. Checkpointing is the procedure of storing snapshots of the forward solution to disk and using these snapshots to recompute the parts of the forward solution that are necessary for the adjoint solve. For large problems, however, the storage cost of just a few copies of an angular flux vector can exceed the available RAM on the host machine. We propose a methodology that does not checkpoint the angular flux vector; instead, we write and store converged source moments, which are typically of a much lower dimension than the angular flux solution. This reduces the memory footprint and I/O load of the problem, but requires that we perform single sweeps to reconstruct flux vectors on demand. We argue that this trade-off is exactly the kind of algorithm that will scale on advanced, memory-limited architectures. We analyze the cost, in terms of FLOPS and memory footprint, of five checkpointing schemes. We also provide computational results that support the analysis and show that the memory-for-work trade off does improve time to solution. (authors)

Stripling, H. F.; Adams, M. L.; Hawkins, W. D. [Texas A and M University, Department of Nuclear Engineering, 3133 TAMU, College Station, TX 77843-3133 (United States)

2013-07-01T23:59:59.000Z

424

Simulations of detonation wave propagation in rectangular ducts using a three-dimensional WENO scheme  

SciTech Connect (OSTI)

This paper reports high resolution simulations using a fifth-order weighted essentially non-oscillatory (WENO) scheme with a third-order TVD Runge-Kutta time stepping method to examine the features of detonation front and physics in square ducts. The simulations suggest that two and three-dimensional detonation wave front formations are greatly enhanced by the presence of transverse waves. The motion of transverse waves generates triple points (zones of high pressure and large velocity coupled together), which cause the detonation front to become locally overdriven and thus form ''hot spots.'' The transversal motion of these hot spots maintains the detonation to continuously occur along the whole front in two and three dimensions. The present simulations indicate that the influence of the transverse waves on detonation is more profound in three dimensions and the pattern of quasi-steady detonation fronts also depends on the duct size. For a ''narrow'' duct (4L x 4L where L is the half-reaction length), the detonation front displays a distinctive ''spinning'' motion about the axial direction with a well-defined period. For a wider duct (20L x 20L), the detonation front exhibits a ''rectangular mode'' periodically, with the front displaying ''convex'' and ''concave'' shapes one following the other and the transverse waves on the four walls being partly out-of-phase with each other. (author)

Dou, Hua-Shu; Tsai, Her Mann [Temasek Laboratories, National University of Singapore (Singapore); Khoo, Boo Cheong; Qiu, Jianxian [Department of Mechanical Engineering, National University of Singapore (Singapore)

2008-09-15T23:59:59.000Z

425

Development of an Efficient Maintenance Scheme for Peak Efficiency of Boilers  

E-Print Network [OSTI]

AbstractPresently the world has enormous advancement in science and technology the topic considered here is just a drop out of an ocean of knowledge. Higher product quality, better reliability, better availability of plants, optimization of cost and efficient working of boilers is the chief concern now a days. Generally the production can be increased by the efficient use of boilers and hence there is a lot of scope to minimize the boiler operation cost. A boiler maintenance improvement program must include two aspects: (1) action to bring the boiler to peak efficiency and (2) action to maintain the efficiency at the maximum level. Good maintenance and efficiency start with having a working knowledge of the components associated with the boiler, keeping records, etc., and end with cleaning heat transfer surfaces, adjusting the air-to-fuel ratio, etc. A well-planned maintenance program avoids unnecessary down time or costly repairs. It also promotes safety and aids boiler code and local inspectors. An inspection schedule listing the procedures should be established. Thus in this paper an attempt is made to develop an efficient maintenance scheme by which boilers can be used with peak efficiency.

Amit Kumar Jain; Anupam Singhal

426

High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme  

E-Print Network [OSTI]

We present results of a high resolution numerical study of two dimensional (2d) Rayleigh-Taylor turbulence using a recently proposed thermal lattice Boltzmann method (LBT). The goal of our study is both methodological and physical. We assess merits and limitations concerning small- and large-scale resolution/accuracy of the adopted integration scheme. We discuss quantitatively the requirements needed to keep the method stable and precise enough to simulate stratified and unstratified flows driven by thermal active fluctuations at high Rayleigh and high Reynolds numbers. We present data with spatial resolution up to 4096 x 10000 grid points and Rayleigh number up to Ra ~ 10^11 . The statistical quality of the data allows us to investigate velocity and temperature fluctuations, scale-by-scale, over roughly four decades. We present a detailed quantitative analysis of scaling laws in the viscous, inertial and integral range, supporting the existence of a Bolgiano-like inertial scaling, as expected in 2d systems. We also discuss the presence of small/large intermittent deviation to the scaling of velocity/temperature fluctuations and the Rayleigh dependency of gradients flatness.

L. Biferale; F. Mantovani; M. Sbragaglia; A. Scagliarini; F. Toschi; R. Tripiccione

2010-09-28T23:59:59.000Z

427

Development of a CNC interpolation scheme for CNC controller based on Runge-Kutta method  

Science Journals Connector (OSTI)

The parametric interpolators of modern CNC machines use Taylor's series approximation to generate successive parameter values for the calculation of x, y, z coordinates of tool positions. In order to achieve greater accuracy, higher order derivatives are required at every sampling period which complicates the calculation for contours represented by NURBS curve. In addition, this method calculates the chordal error in a given segment through estimation of the curvature neglecting a fraction of the error. In order to avoid calculating higher derivatives and make the calculations simpler, this paper proposes the classical fourth-order Runge-Kutta (RK) method for the determination of successive tool positions requiring the calculation of the first derivatives only. Furthermore, a method of estimating the chordal error on the average value of parameters at the end points of a given curve segment is proposed here that does not require the calculation of curvature at every segment. Finally, a variable feedrate interpolation scheme is designed combining the RK method of parameter calculation and the proposed method of chordal error calculation. Results show that reduced chordal error and feedrate fluctuations are achievable with the proposed interpolator compared to the conventional interpolator based on Taylor's approximation with higher order terms.

Biddut Bhattacharjee; Abdullahil Azeem; Syed Mithun Ali; Sanjoy Kumar Paul

2012-01-01T23:59:59.000Z

428

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

429

The Aizenman-Sims-Starr and Guerra's schemes for the SK model with multidimensional spins  

E-Print Network [OSTI]

We prove upper and lower bounds on the free energy in the Sherrington-Kirkpatrick model with multidimensional (e.g., Heisenberg) spins in terms of the variational inequalities based on the corresponding Parisi functional. We employ the comparison scheme of Aizenman, Sims and Starr and the one of Guerra involving the generalised random energy model-inspired processes and Ruelle's probability cascades. For this purpose an abstract quenched large deviations principle of the Gaertner-Ellis type is obtained. Using the properties of Ruelle's probability cascades and the Bolthausen-Sznitman coalescent, we derive Talagrand's representation of the Guerra remainder term for our model. We study the properties of the multidimensional Parisi functional by establishing a link with a certain class of the non-linear partial differential equations. Solving a problem posed by Talagrand, we show the strict convexity of the local Parisi functional. We prove the Parisi formula for the local free energy in the case of the multidimensional Gaussian a priori distribution of spins using Talagrand's methodology of the a priori estimates.

Anton Bovier; Anton Klimovsky

2008-02-23T23:59:59.000Z

430

Review of transmission schemes and case studies for renewable power integration into the remote grid  

Science Journals Connector (OSTI)

Investment in transmission for renewable power penetration to the remote grid essentially faces a set of inherent, regulatory, economic and technical challenges. This work investigates these challenges to enhance renewable power integration into the remote grid. This study aims to enhance regulatory policies and associated planning frameworks to be more efficient and justifiable for renewable power integration paradigm. First, a set of leading transmission schemes practiced, or investigated, in different countries are evaluated against the challenges which are obvious for long distance renewable power transmission. Second, a net benefit framework is presented to address the challenging issues of location constrained renewable power penetration into the Queensland network of the Australian grid. The proposed framework incorporates the carbon emission price as an environmental benefit which significantly influences the costbenefit analysis. This paper discusses the hub approach of network integration. The transmission investment cost allocation is addressed here as well. The concepts are verified through the implementation of the proposed framework in four prospective projects of the Queensland network in the Australian national electricity market (NEM).

Kazi Nazmul Hasan; Tapan Kumar Saha; Mehdi Eghbal; Deb Chattopadhyay

2013-01-01T23:59:59.000Z

431

How Reliable are Parallel Disk Systems When Energy-Saving Schemes are Involved? Shu Yin, Xiaojun Ruan, Adam Manzanares, and Xiao Qin  

E-Print Network [OSTI]

How Reliable are Parallel Disk Systems When Energy-Saving Schemes are Involved? Shu Yin, Xiaojun, growing evidence shows that energy-saving schemes in disk drives usually have negative impacts on storage - called MINT - to evaluate the reliability of a parallel disk system where energy-saving mechanisms

Qin, Xiao

432

An Integrated Scheme for Anomaly Identification and Automatic Control of Nuclear Power Plants Xin Jin, Robert M. Edwards and Asok Ray  

E-Print Network [OSTI]

An Integrated Scheme for Anomaly Identification and Automatic Control of Nuclear Power Plants Xin.edu INTRODUCTION Nuclear Power Plants (NPPs) are complex systems with many variables that require adjustment to the NPP. METHODOLOGY This proposed integrated scheme consists of three inter-related subsystems: Nuclear

Ray, Asok

433

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

434

A 3D Automated Classification Scheme for the TAUVEX data pipeline  

E-Print Network [OSTI]

In order to develop a pipeline for automated classification of stars to be observed by the TAUVEX ultraviolet space Telescope, we employ an artificial neural network (ANN) technique for classifying stars by using synthetic spectra in the UV region from 1250\\AA to 3220\\AA as the training set and International Ultraviolet Explorer (IUE) low resolution spectra as the test set. Both the data sets have been pre-processed to mimic the observations of the TAUVEX ultraviolet imager. We have successfully classified 229 stars from the IUE low resolution catalog to within 3-4 spectral sub-class using two different simulated training spectra, the TAUVEX spectra of 286 spectral types and UVBLUE spectra of 277 spectral types. Further, we have also been able to obtain the colour excess (i.e. E(B-V) in magnitude units) or the interstellar reddening for those IUE spectra which have known reddening to an accuracy of better than 0.1 magnitudes. It has been shown that even with the limitation of data from just photometric bands, ANNs have not only classified the stars, but also provided satisfactory estimates for interstellar extinction. The ANN based classification scheme has been successfully tested on the simulated TAUVEX data pipeline. It is expected that the same technique can be employed for data validation in the ultraviolet from the virtual observatories. Finally, the interstellar extinction estimated by applying the ANNs on the TAUVEX data base would provide an extensive extinction map for our galaxy and which could in turn be modeled for the dust distribution in the galaxy.

Archana Bora; Ranjan Gupta; Harinder P. Singh; Jayant Murthy; Rekhesh Mohan; Kalpana Duorah

2007-11-27T23:59:59.000Z

435

Multivariate distributed ensemble generator: A new scheme for ensemble radar precipitation estimation over temperate maritime climate  

Science Journals Connector (OSTI)

Summary It is broadly recognized that large uncertainties are associated with radar rainfall (RR) estimates, which could propagate in the hydrologic forecast system and contaminate its final outcomes. Ensemble generation of probable true rainfall is an elegant and practical solution to characterize the uncertainty of RR estimates and behavior in the hydrologic forecast system. In this study, we have proposed a fully formulated uncertainty model that can statistically quantify the characteristics of the RR errors and their spatial and temporal structure, which is a novel method of its kind in the radar data uncertainty field. The error model is established based on the distribution of gauge rainfall conditioned on radar rainfall (GR|RR). Its spatial and temporal dependencies are simulated based on the t-copula function. With this proposed error model, a Multivariate Distributed Ensemble Generator (MDEG) driven by the copula and autoregressive filter is designed and applied in the Brue catchment (135km2), an extensively gauged site in the United Kingdom. The products from MDEG include a time series of ensemble rainfall fields with each of them representing a probable true rainfall. A series of tests show that the ensemble fields generated by MDEG have realistically maintained the spatial and temporal structure of the random error in RR as they have relatively low mean absolute errors (MAEs) of spatio-temporal correlation towards the observed ones. In addition, the results show that the simulated uncertainty bands derived by the 500 realizations of ensemble rainfall encompass most of the reference rain gauge measurements, indicating that the proposed scheme is statistically reliable.

Qiang Dai; Dawei Han; Miguel Rico-Ramirez; Prashant K. Srivastava

2014-01-01T23:59:59.000Z

436

Eulerian description of high-order bounce-back scheme for lattice Boltzmann equation with curved boundary.  

SciTech Connect (OSTI)

We propose an Eulerian description of the bounce-back boundary condition based on the high-order implicit time-marching schemes to improve the accuracy of lattice Boltzmann simulation in the vicinity of curved boundary. The Eulerian description requires only one grid spacing between fluid nodes when second-order accuracy in time and space is desired, although high-order accurate boundary conditions can be constructed on more grid-point support. The Eulerian description also provides an analytical framework for several different interpolation-based boundary conditions. For instance, the semi-Lagrangian, linear interpolation boundary condition is found to be a first-order upwind discretization that changes the time-marching schemes from implicit to explicit as the distance between the fluid boundary node and the solid boundary increases.

Lee, T.; Leaf, G. K.; Mathematics and Computer Science; The City Univ. of New York

2009-04-01T23:59:59.000Z

437

Modulation Extension Control of Hybrid Cascaded H-Bridge Multilevel Converters with 7-Level Fundamental Frequency Switching Scheme  

SciTech Connect (OSTI)

This paper presents a modulation extension control algorithm for hybrid cascaded H-bridge multilevel converters. The hybrid cascaded H-bridge multilevel motor drive using only a single DC source for each phase is promising for high power motor drive applications since it can greatly decrease the number of required DC power supplies, has high quality output power due to its high number of output levels, and has high conversion efficiency and low thermal stress by using fundamental frequency switching scheme. But one disadvantage of the 7-level fundamental frequency switching scheme is that its modulation index range is too narrow when capacitor's voltage balance is maintained. The proposed modulation extension control algorithm can greatly increase capacitors' charging time and decrease the capacitors' discharging time by injecting triplen harmonics to extend the modulation index range of the hybrid cascaded H-bridge multilevel converters.

Du, Zhong [ORNL; Ozpineci, Burak [ORNL; Tolbert, Leon M [ORNL

2007-01-01T23:59:59.000Z

438

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

439

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

440

A survey on control schemes for distributed solar collector fields. Part I: Modeling and basic control approaches  

Science Journals Connector (OSTI)

This article presents a survey of the different automatic control techniques that have been applied to control the outlet temperature of solar plants with distributed collectors during the last 25 years. Different aspects of the control problem involved in this kind of plants are treated, from modeling and simulation approaches to the different basic control schemes developed and successfully applied in real solar plants. A classification of the modeling and control approaches is used to explain the main features of each strategy.

E.F. Camacho; F.R. Rubio; M. Berenguel; L. Valenzuela

2007-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
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441

Occurrence of pharmaceutically active and non-steroidal estrogenic compounds in three different wastewater recycling schemes in Australia  

Science Journals Connector (OSTI)

The discovery that natural and synthetic chemicals, in the form of excreted hormones and pharmaceuticals, as well as a vast array of compounds with domestic and industrial applications, can enter the environment via wastewater treatment plants and cause a wide variety of environmental and health problems even at very low concentrations, suggests the need for improvement of water recycling. Three Australian wastewater recycling schemes, two of which employ reverse osmosis (RO) technology, the other applying ozonation and biological activated carbon filtration, have been studied for their ability to remove trace organic contaminants including 11 pharmaceutically active compounds and two non-steroidal estrogenic compounds. Contaminant concentrations were determined using a sensitive analytical method comprising solid phase extraction, derivatization and GC with MS using selected ion monitoring. In raw wastewater, concentrations of analgesics and non-steroidal anti-inflammatory medications were comparable to those found in wastewaters around the world. Remarkably, removal efficiencies for the three schemes were superior to literature values and RO was responsible for the greatest proportion of contaminant removal. The ability of RO membranes to concentrate many of the compounds was demonstrated and highlights the need for continued research into monitoring wastewater treatment, concentrate disposal, improved water recycling schemes and ultimately, safer water and a cleaner environment.

Jawad H. Al-Rifai; Candace L. Gabelish; Andrea I. Schfer

2007-01-01T23:59:59.000Z

442

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

443

Parameter Tuning and Calibration of RegCM3 with MITEmanuel Cumulus Parameterization Scheme over CORDEX East Asia Domain  

Science Journals Connector (OSTI)

In this study, the authors calibrated the performance of the Regional Climate Model, version 3 (RegCM3), with the Massachusetts Institute of Technology (MIT)Emanuel cumulus parameterization scheme over the Coordinated Regional Climate Downscaling ...

Liwei Zou; Yun Qian; Tianjun Zhou; Ben Yang

2014-10-01T23:59:59.000Z

444

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

445

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

446

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

447

A robust high-speed position control scheme based on computed torque method for 2 DOF flexible link robot arms  

Science Journals Connector (OSTI)

Our group has proposed a high-speed tip position control scheme (Sawada and Itamiya, 2012b) which can be applied to both a flexible link robot arm and a rigid link robot arm. It can be regarded as a natural extension of the computed torque method for a rigid link robot arm. This method can achieve a high-speed position control for 2 DOF flexible link robot arm when the exact model of the controlled object is known. However, this method does not have robustness to modelling errors. In this paper, we propose an adaptive identification method in order to decrease the modelling error from the control system in which a nominal control law is used. Then, we use the closed loop adaptive identification, considering the movable range of the robot arm. As a result, the high-speed position control can be achieved by using parameter estimates. Its validity of the proposed scheme is shown by a stability analysis and is also illustrated by the experimental results on the frequency response of the link angle and that of the deflection angle.

K. Itamiya; M. Sawada

2013-01-01T23:59:59.000Z

448

P2P video-on-demand streaming using caching and reservation scheme based on video popularity  

Science Journals Connector (OSTI)

In peer-to-peer video-on-demand streaming, peers reduce video server load by caching viewed video data and sending these data to other peers. Although a first-in, first-out approach is typically used in the caching algorithm, it is not an efficient use of peers' upload capacity because the peers can cache the data of unpopular videos that no other peers request. In this paper, we propose a video-popularity-based caching and reservation (VPCR) scheme that increases the utilisation of peers' upload capacity. Through caching based on video popularity, even when peers view unpopular videos, they can deliver popular videos to other peers. The reservation scheme addresses temporal viewership fluctuations for each video which decrease utilisation of peers' upload capacity in VPCR. We evaluate VPCR through computer simulations and show that it is efficient in reducing the video server load under various video popularity distributions. We also show the relation between video server load and the number of simultaneous reservation acceptances for each peer.

Takaya Fujimoto; Rei Endo; Hiroshi Shigeno

2012-01-01T23:59:59.000Z

449

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

450

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

451

A new numerical scheme to compute 3D configurations of quasiequilibrium compact stars in general relativity -- Application to synchronously rotating binary star systems --  

E-Print Network [OSTI]

We have developed a new numerical scheme to obtain quasiequilibrium structures of nonaxisymmetric compact stars such as binary neutron star systems as well as the spacetime around those systems in general relativity. Concerning quasiequilibrium states of binary systems in general relativity, several investigations have been already carried out by assuming conformal flatness of the spatial part of the metric. However, the validity of the conformally flat treatment has not been fully analyzed except for axisymmetric configurations. Therefore it is desirable to solve quasiequilibrium states by developing totally different methods from the conformally flat scheme. In this paper we present a new numerical scheme to solve directly the Einstein equations for 3D configurations without assuming conformal flatness, although we make use of the simplified metric for the spacetime. This new formulation is the extension of the scheme which has been successfully applied for structures of axisymmetric rotating compact stars in general relativity. It is based on the integral representation of the Einstein equations by taking the boundary conditions at infinity into account. We have checked our numerical scheme by computing equilibrium sequences of binary polytropic star systems in Newtonian gravity and those of axisymmetric polytropic stars in general relativity. We have applied this numerical code to binary star systems in general relativity and have succeeded in obtaining several equilibrium sequences of synchronously rotating binary polytropes with the polytropic indices N = 0.0, 0.5 and 1.0.

Fumihiko Usui; Koji Uryu; Yoshiharu Eriguchi

1999-06-24T23:59:59.000Z

452

Quantum stream cipher by the Yuen 2000 protocol: Design and experiment by an intensity-modulation scheme  

Science Journals Connector (OSTI)

We investigate the Yuen 2000 (so-called Y-00)-protocol, which can realize a randomized stream cipher with high bit rate (Gbit/s) for long distances (several hundreds km). The randomized stream cipher with randomization by quantum noise based on the Y-00 protocol is called a quantum stream cipher in this paper, and it may have security against known plaintext attacks which has no analog with any conventional symmetric key ciphers. We present a simple cryptanalysis based on an attackers heterodyne measurement and a quantum unambiguous measurement to make clear the strength of the Y-00 protocol in real communication. In addition, we give a design for the implementation of an intensity-modulation scheme and report an experimental demonstration of 1Gbit?s quantum stream cipher through a 20-km-long transmission line.

Osamu Hirota, Masaki Sohma, Masaru Fuse, and Kentaro Kato

2005-08-26T23:59:59.000Z

453

An implicit difference scheme for the long-time evolution of localized solutions of a generalized Boussinesq system  

SciTech Connect (OSTI)

We consider the nonlinear system of equations built up from a generalized Boussinesq equation coupled with a wave equation which is a model for the one-dimensional dynamics of phases in martensitic alloys. The strongly implicit scheme employing Newton`s quasilinearisation allows us to track the long time evolution of the localized solutions of the system. Two distinct classes of solutions are encountered for the pure Boussinesq equation. The first class consists of oscillatory pulses whose envelopes are localized waves. The second class consists of smoother solutions whose shapes are either heteroclinic (kinks) or homoclinic (bumps). The homoclinics decrease in amplitude with time while their support increases. An appropriate self-similar scaling is found analytically and confirmed by the direct numerical simulations to high accuracy. The rich phenomenology resulting from the coupling with the wave equation is also investigated. 11 refs., 12 figs., 2 tabs.

Christov, C.I.; Maugin, G.A. [Universite Pierre et Marie Curie, Paris (France)] [Universite Pierre et Marie Curie, Paris (France)

1995-01-01T23:59:59.000Z

454

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

455

Green technologies and business practices: a study on rural microenterprises in PURA scheme villages of Thanjavur District, Tamil Nadu, India  

Science Journals Connector (OSTI)

This paper present the study that was carried out in the PURA scheme villages of Thanjavur District, India. The investigation was to determine the impact of education on green technologies and business practice among the villagers, who deals with micro-enterprises. The data were collected from PURA villages that consist of seven clusters. Each cluster has been allocated an activity that yield production from natural resources. A random sampling method was used in collecting the data among clusters of the villagers. Chi-square test and T-test was used in determining the role of green technologies on the villagers' performance towards green technology management and practices. The research study was carried out before and after the implementation of green technologies-based farming. The result revealed that the villagers have changed their method of farming after the education of green technologies and business practices.

K.V.R. Rajandran

2013-01-01T23:59:59.000Z

456

Electronic structure calculations of positron lifetimes in SiC: Self-consistent schemes and relaxation effect  

Science Journals Connector (OSTI)

Abstract We present electronic structure calculations of positron lifetimes in various neutral and negative monovacancies in 3C and 6H silicon carbide. Self-consistent positron lifetime calculation schemes were used and full defect relaxation due to the creation of the vacancy and the presence of the positron was considered. Formation energies of the various possible charges of the defects were also calculated to predict their detectability in PAS. Lifetimes between 170ps and 195ps for VC and between 222ps and 227ps for \\{VSi\\} were obtained. Based on these results we propose new interpretations of the experimental PAS signals observed in n-type 3C and 6H-SiC samples.

J. Wiktor; G. Jomard; M. Bertolus

2014-01-01T23:59:59.000Z

457

Analysis of field-oriented controlled induction motor drives under sensor faults and an overview of sensorless schemes  

Science Journals Connector (OSTI)

Abstract To obtain high dynamic performance on induction motor drives (IMD), variable voltage and variable frequency operation has to be performed by measuring speed of rotation and stator currents through sensors and fed back them to the controllers. When the sensors are undergone a fault, the stability of control system, may be designed for an industrial process, is disturbed. This paper studies the negative effects on a 12.5 hp induction motor drives when the field oriented control system is subjected to sensor faults. To illustrate the importance of this study mine hoist load diagram is considered as shaft load of the tested machine. The methods to recover the system from sensor faults are discussed. In addition, the various speed sensorless schemes are reviewed comprehensively.

D Arun Dominic; Thanga Raj Chelliah

2014-01-01T23:59:59.000Z

458

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

459

Using non-verbal social signals and degree centrality to optimise a covert actor's detection scheme for a healthy networked community  

Science Journals Connector (OSTI)

Passive attacks are of the nature of eavesdropping on, monitoring of, transmissions where the attacker's goal is to unnoticeably obtain the information in transmission. Passive attacks are difficult to detect and therefore hard to prevent. The main focus for most research in this area has been on preventing the attacks rather than detecting the attacker for example by data encryption. But encryption by itself falls short because passive attack can occur in more ways than just observing exposed data. Encryption is also not always applicable for example in open wireless communication protocols. With these observations, we aim to design a scheme that reduces such attackers' capability. We introduce the non-verbal social signal deception detection in the investigative module while we optimise the scheme by putting in consideration a participant's centrality given the topology. The results are an intuitive scalable and optimised scheme that detects, investigates, and expels the guilty suspects.

Munene W. Kanampiu

2014-01-01T23:59:59.000Z

460

DOCTORAL TRAINING GRANT (DTG) SCHEME TERMS AND CONDITIONS A Doctoral Training Grant (DTG) is a grant paid by a Research Council to a Research  

E-Print Network [OSTI]

DOCTORAL TRAINING GRANT (DTG) SCHEME TERMS AND CONDITIONS A Doctoral Training Grant (DTG. Doctoral Training Grants aim to: · assist the Research Organisation to attract the best people into postgraduate research and training; · allow a maximum of local discretion in managing and organising doctoral

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

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"

462

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

463

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 4 March 2010 Keywords: Hydraulic fractures Integro the propagation of a hydraulic fracture in a state of plane strain. Special blended cubic Hermite-power­law basis

Peirce, Anthony

464

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

465

272 IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS--PART A: SYSTEMS AND HUMANS, VOL. 41, NO. 2, MARCH 2011 A Message-Scheduling Scheme for Energy  

E-Print Network [OSTI]

, MARCH 2011 A Message-Scheduling Scheme for Energy Conservation in Multimedia Wireless Systems Xiaojun-world applications. Index Terms--Energy conservation, multimedia wireless systems, power-aware scheduling, real consumption, this paper addresses the issue of scheduling real-time messages in multimedia wireless networks

Qin, Xiao

466

A standard test case suite for two-dimensional linear transport on the sphere: results from a collection of state-of-the-art schemes  

E-Print Network [OSTI]

CSLAM4, SLFV-ML/SL, MPAS, ICON). Common for the schemes thathills, shape-preserving Icosahedral/Voronoi l 2 l 2 ICON-CN0.2 ICON-CN0.6 LPM-CN MPAS-CN0.8 SLFV-SL-CN0.8 SLFV-ML-

2014-01-01T23:59:59.000Z

467

paper-number : V11D-2318 abstract-number : 949668 Mass-conservative numerical scheme of bubble growth in incompressible viscous magmas  

E-Print Network [OSTI]

Pa(0) C : water concentration : surface tension i : Pa(0) M GT M : water molar mass G : gas constant scale decompression time scale = 2 RiPa(0) : dimensionless surface tension : porosity R S r P C(t,r) m is refined at the bubble boundary Scheme stability Constraint on the time step by physical considera- tion

d'Orléans, Université

468

Degradation in urban air quality from construction activity and increased traffic arising from a road widening scheme  

Science Journals Connector (OSTI)

Abstract Road widening schemes in urban areas are often proposed as a solution to traffic congestion and as a means of stimulating economic growth. There is however clear evidence that new or expanded roads rapidly fill with either displaced or induced traffic, offsetting any short-term gains in eased traffic flows. What has not been addressed in any great detail is the impact of such schemes on air quality, with modelled impact predictions seldom validated by measurements after the expansion of road capacity. In this study we made use of a road widening project in London to investigate the impact on ambient air quality (particulate matter, NOX, NO2) during and after the completion of the road works. PM10 increased during the construction period up to 15?gm?3 during working hours compared to concentrations before the road works. A box modelling approach was used to determine a median emission factor of 0.0022kgPM10m?2month?1, three times larger than that used in the UK emission inventory (0.0007kgPM10m?2month?1). Peaks of activity released 0.0130kgPM10m?2month?1, three and eight times smaller than the peak values used in the European and US inventories. After the completion of the widening there was an increase in all pollutants from the road during rush hour: 24?gm?3 for PM10; 1?gm?3 for PM2.5; 40 and 8?gm?3 for NOX and NO2, respectively. NO2 EU Limit Value was breached after the road development illustrating a notable deterioration in residential air quality. Additionally, PM10, but not PM2.5, glutathione dependent oxidative potential increased after the road was widened consistent with an increase in pro-oxidant components in the coarse particle mode, related to vehicle abrasion processes. These increased air pollution indices were associated with an increase in the number of cars, taxis and LGVs.

Anna Font; Timothy Baker; Ian S. Mudway; Esme Purdie; Christina Dunster; Gary W. Fuller

2014-01-01T23:59:59.000Z

469

Full-Length Structures of BenM and Two Variants Reveal Different Oligomerization Schemes for LysR-Type Transcriptional Regulators  

SciTech Connect (OSTI)

BenM, a LysR-type transcriptional regulator (LTTR) from the bacterium Acinetobacter baylyi, responds synergistically to benzoate and cis,cis-muconate. With these effectors, BenM activates gene expression during benzoate consumption. Without effectors, BenM represses transcription. Here, X-ray crystallography was used to determine the full-length structures of BenM and two variants that activate transcription without benzoate or cis,cis-muconate: BenM(R156H) and BenM(E226K). Previous studies indicate that these regulators function as tetramers. Here, interconnections between subunits in the crystals prevented the formation of a closed oligomer and highlighted the inherent flexibility of this multidomain regulator. Nevertheless, analysis of subunit interfaces suggested the functional significance of key interactions. The structures of BenM and its variants were nearly identical, implying that transcriptional differences rely on factors beyond major conformational changes defined solely by sequence. Comparisons of BenM with other LTTRs, including unpublished structures in the Protein Data Bank, revealed extensive variation in the relative orientations of DNA-binding domains (DBDs) and effector-binding domains (EBDs). To form dimers, different LTTRs used similar interfaces between two EBDs, each containing two subdomains: EBD-I and EBD-II. Surprisingly, the dimers used three substantially different schemes to form higher-order oligomers. In one scheme used by BenM, oligomer assembly involved contacts between the EBD-II regions and the DBD regions of adjacent subunits. In another scheme, there were no contacts between the EBDs; only the DBDs were involved in tetramer formation. In the third scheme, the oligomer interface involved DBD and EBD-I/EBD-II contacts. These diverse schemes demonstrate novel variation in the oligomeric structures of individual LTTRs within this large and important family.

Ruangprasert, Ajchareeya; Craven, Sarah H.; Neidle, Ellen L.; Momany, Cory (Georgia)

2010-11-30T23:59:59.000Z

470

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 vari...

Papinutto, Mauro; Preti, David

2014-01-01T23:59:59.000Z

471

PDT012 | analysis schemes  

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

**************************************************************************** CEHS base-pair parameters bp Shear Stretch Stagger Buckle Propeller Opening 1 G-C -0.15 -0.15 -0.01 -10.11 -16.05 -2.00 2 T-A 0.01 -0.10 0.27 -9.07 -4.08 4.57 3 A-T 0.25 -0.01 -0.03 -30.98 14.20 7.29 4 T-A -0.01 0.04 -0.00 -27.23 -6.34 4.39 5 A-T 0.24 0.06 -0.57 -1.69 -5.26 6.21 6 T-A -0.28 -0.05 -0.60 6.33 -2.96 2.80 7 A-T 0.10 -0.12 0.04 21.93 -9.12 1.42 8 A-T -0.17 0.05 0.31 32.05 -16.02 7.91 9 A-T 0.03 -0.10 0.04 4.50 -1.30 6.12

472

Low Energy Distillation Schemes  

E-Print Network [OSTI]

an important means of reducing energy consumption in distillation processes. However, its conventional use requires the installation of piping (and pipes carrying vapour streams tend to be of large diameter and are consequently expensive). So, finally we.... However, its conventional use requires the installation of piping (and pipes carrying vapour streams tend to be of large diameter and are consequently expensive). In the late eighties engineers in Germany [e.g. Kaibel, 1987] looked at one way in which...

Polley, G. T.

473

Kingairloch Hydroelectric Scheme  

Science Journals Connector (OSTI)

Worldwide today the installed capacity of hydroelectric power stations is of the order of...9) supplying some 3,000TWh (where T = 1012).

Dr. Reginald W. Herschy

2012-01-01T23:59:59.000Z

474

Hybrid isotope separation scheme  

DOE Patents [OSTI]

A method is described for yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which a scavenger, radiating the gas with a wave length or frequency characteristic of the absorption of a particular isotope of the atomic or molecular gas, thereby inducing a photochemical reaction between the scavenger, and collecting the specific isotope-containing chemical by using a recombination surface or by a scooping apparatus. 2 figures.

Maya, J.

1991-06-18T23:59:59.000Z

475

Hybrid isotope separation scheme  

DOE Patents [OSTI]

A method of yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which a scavenger, radiating the gas with a wave length or frequency characteristic of the absorption of a particular isotope of the atomic or molecular gas, thereby inducing a photochemical reaction between the scavenger, and collecting the specific isotope-containing chemical by using a recombination surface or by a scooping apparatus.

Maya, Jakob (Brookline, MA)

1991-01-01T23:59:59.000Z

476

The Gambit Scheme manual.  

E-Print Network [OSTI]

9.2 IEEE floating point arithmetic. To better conform to IEEE floating point arithmetic the standard numeric tower is extended with these special inexact reals: +inf.

2008-01-22T23:59:59.000Z

477

An optimal guarding scheme for thermal conductivity measurement using a guarded cut-bar technique, part 1 experimental study  

SciTech Connect (OSTI)

In the guarded cut-bar technique, a guard surrounding the measured sample and reference (meter) bars is temperature controlled to carefully regulate heat losses from the sample and reference bars. Guarding is typically carried out by matching the temperature profiles between the guard and the test stack of sample and meter bars. Problems arise in matching the profiles, especially when the thermal conductivitiesof the meter bars and of the sample differ, as is usually the case. In a previous numerical study, the applied guarding condition (guard temperature profile) was found to be an important factor in measurement accuracy. Different from the linear-matched or isothermal schemes recommended in literature, the optimal guarding condition is dependent on the system geometry and thermal conductivity ratio of sample to meter bar. To validate the numerical results, an experimental study was performed to investigate the resulting error under different guarding conditions using stainless steel 304 as both the sample and meter bars. The optimal guarding condition was further verified on a certified reference material, pyroceram 9606, and 99.95% pure iron whose thermal conductivities are much smaller and much larger, respectively, than that of the stainless steel meter bars. Additionally, measurements are performed using three different inert gases to show the effect of the insulation effective thermal conductivity on measurement error, revealing low conductivity, argon gas, gives the lowest error sensitivity when deviating from the optimal condition. The result of this study provides a general guideline for the specific measurement method and for methods requiring optimal guarding or insulation.

Changhu Xing [Utah State Univ., Logan, UT (United States). Dept. of Mechanical and Aerospace Engineering; Colby Jensen [Utah State Univ., Logan, UT (United States). Dept. of Mechanical and Aerospace Engineering; Charles Folsom [Utah State Univ., Logan, UT (United States). Dept. of Mechanical and Aerospace Engineering; Heng Ban [Utah State Univ., Logan, UT (United States). Dept. of Mechanical and Aerospace Engineering; Douglas W. Marshall [Idaho National Laboratory (INL), Idaho Falls, ID (United States)

2014-01-01T23:59:59.000Z

478

Rate constants for OH with selected large alkanes : shock-tube measurements and an improved group scheme.  

SciTech Connect (OSTI)

High-temperature rate constant experiments on OH with the five large (C{sub 5}-C{sub 8}) saturated hydrocarbons n-heptane, 2,2,3,3-tetramethylbutane (2,2,3,3-TMB), n-pentane, n-hexane, and 2,3-dimethylbutane (2,3-DMB) were performed with the reflected-shock-tube technique using multipass absorption spectrometric detection of OH radicals at 308 nm. Single-point determinations at {approx}1200 K on n-heptane, 2,2,3,3-TMB, n-hexane, and 2,3-DMB were previously reported by Cohen and co-workers; however, the present work substantially extends the database to both lower and higher temperature. The present experiments span a wide temperature range, 789-1308 K, and represent the first direct measurements of rate constants at T > 800 K for n-pentane. The present work utilized 48 optical passes corresponding to a total path length of {approx}4.2 m. As a result of this increased path length, the high OH concentration detection sensitivity permitted pseudo-first-order analyses for unambiguously measuring rate constants. The experimental results can be expressed in Arrhenius form in units of cm{sup 3} molecule{sup -1} s{sup -1} as follows: K{sub OH+n-heptane} = (2.48 {+-} 0.17) x 10{sup -10} exp[(-1927 {+-} 69 K)/T] (838-1287 K); k{sub OH+2,2,3,3-TMB} = (8.26 {+-} 0.89) x 10{sup -11} exp[(-1337 {+-} 94 K)/T] (789-1061 K); K{sub OH+n-pentane} = (1.60 {+-} 0.25) x 10{sup -10} exp[(-1903 {+-} 146 K)/T] (823-1308 K); K{sub OH+n-hexane} = (2.79 {+-} 0.39) x 10{sup -10} exp[(-2301 {+-} 134 K)/T] (798-1299 K); and k{sub OH+2,3-DMB} = (1.27 {+-} 0.16) x 10{sup -10} exp[(-1617 {+-} 118 K)/T] (843-1292 K). The available experimental data, along with lower-T determinations, were used to obtain evaluations of the experimental rate constants over the temperature range from {approx}230 to 1300 K for most of the title reactions. These extended-temperature-range evaluations, given as three-parameter fits, are as follows: k{sub OH+n-heptane} = 2.059 x 10{sup -5}T{sup 1.401} exp(33 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (241-1287 K); k{sub OH+2,2,3,3-TMB} = 6.835 x 10{sup -17}T{sup 1.886} exp(-365 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (290-1180 K); k{sub OH+n-pentane} = 2.495 x 10{sup -16}T{sup 1.649} exp(80 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (224-1308 K); k{sub OH+n-hexane} = 3.959 x 10{sup -18}T{sup 2.218} exp(443 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (292-1299 K); and k{sub OH+2,3-DMB} = 2.287 x 10{sup -17}T{sup 1.958} exp(365 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (220-1292 K). The experimental data and the evaluations obtained for these five larger alkanes in the present work were used along with prior data/evaluations obtained in this laboratory for H abstractions by OH from a series of smaller alkanes (C{sub 3}?C{sub 5}) to devise rate rules for abstractions from various types of primary, secondary, and tertiary H atoms. Specifically, the current scheme was applied with good success to H abstractions by OH from a series of n-alkanes (n-octane through n-hexadecane). The total rate constants using this group scheme for reactions of OH with selected large alkanes are given as three-parameter fits in this article. The rate constants for the various abstraction channels in any large n-alkane can also be obtained using the groups listed in this article. The present group scheme serves to reduce the uncertainties in rate constants for OH + alkane reactions.

Sivaramakrishnan, R.; Michael, J. V.; Chemical Sciences and Engineering Division

2009-04-30T23:59:59.000Z

479

Green ergonomics and green economics: the effect of feed-in tariff schemes on user behaviours and attitudes towards energy consumption  

Science Journals Connector (OSTI)

On 1 April 2010 the UK government introduced 'feed-in tariff' (FIT) legislation to provide incentives for small-scale renewable energy generation, particularly by residential home-owners. This paper investigates the existing knowledge base to consider if living in a property with on-site renewable energy generation may affect user attitudes and behaviours. This knowledge is interpreted from an ergonomics/human factors perspective whilst also addressing underlying economic issues. Suggestions are made as to what effects FIT schemes may have on public attitudes and where further research efforts should be focused. A key finding is that FIT schemes are likely to result in a shift in public behaviour, particularly towards reduced energy consumption but only if initiatives address fundamental issues of green ergonomics and green economics.

Robin Winslow Morris; Alex W. Stedmon; Alyson Langley

2012-01-01T23:59:59.000Z

480

Separation scheme for selective and quantitative isolation of cobalt from neutron-irradiated biological materials by ion exchange and extraction chromatography  

SciTech Connect (OSTI)

Highly reliable radiochemical separation scheme for selective and quantitative isolation of trace amounts of cobalt from neutron-irradiated biological materials was elaborated. The method consists in wet-ashing of the sample with HNO{sub 3} + HClO{sub 4} (1:1) mixture plus vanadium salt (oxidation catalyst), removal of silica by evaporation with HF and separation of cobalt from accompanying ions successively on 3 columns with Dowex 1-X8[Cl{sup -}] from 0.5 M HCl, Dowex 1-X8[Cl{sup -}] from 8 M HCl + 2 M MgCl{sub 2} and tri-n-octylphosphine oxide (TOPO) supported on styrene-divinylbenzene copolymer, from 7 M HCl solution, respectively. Cobalt of very high radiochemical purity is finally recovered in 1.2 M HCl solution with practically 100% yield. The separation scheme is universally applicable, to biological samples of both animal and plant origin and was devised to become an integral part of the very accurate ({open_quotes}definitive{close_quotes}) method of cobalt determination by neutron activation analysis (NAA). Preliminary results on Co determination by NAA in some certified reference materials confirmed high reliability of the devised separation scheme.

Dybczynski, R.; Danko, B.; Maleszewska, H. [Institute of Nuclear Chemistry and Technology, Warsaw (Poland)

1994-01-01T23:59:59.000Z

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481

Linking domestic emissions trading schemes and the evolution of the international climate regime bottom-up support of top-down processes? Introduction to the special issue of MITI  

Science Journals Connector (OSTI)

More and more countries are incorporating emissions trading into their national climate policies. While the ... , Norway and Switzerland have already launched their emissions trading schemes (ETS), the Japanese M...

Ralf Schle; Wolfgang Sterk

2009-06-01T23:59:59.000Z

482

The analytical energy gradient scheme in the Gaussian based Hartree-Fock and density functional theory for two-dimensional systems using fast multipole method  

SciTech Connect (OSTI)

The analytical total energy gradient scheme for the Hartree-Fock and density functional crystalline orbital theory is formulated for infinitely extended periodic systems of general dimensions and implemented for those of two dimensions. Two major differences between the analytical gradient scheme for extended systems and that for molecular systems are described in detail. The first is the treatment of the long-range Coulomb interactions, which arises due to the infinite nature of the systems. The long-range effect is efficiently included by the multipole expansion technique and its extension, the fast multipole method The use of the fast multipole method enables us to include the long range effect up to the order of micro meter to millimeter region around the reference unit cell by virtue of the logarithmic cost scaling of the algorithm achieved by regrouping distant multipoles together and reducing the number of pairwise interactions. The second is the formulation of analytical gradient expressions with respect to unit cell parameters. In the HF theory they can be calculated by accumulating forces acting on atoms multiplied by some appropriate factors, while there is an extra term which requires a special numerical treatment in grid-based density functional theory. Specifically, it is shown that the quadrature weight derivatives do not vanish even in the limit of infinitely fine grid, when calculating the gradients with respect to unit cell parameters, and are essential in evaluating those gradients. Combining the analytical gradient scheme and an efficient inclusion of the long-range interaction makes it feasible to perform a full geometry optimization of extended systems at ab initio levels.

Tobita, Motoi; Hirata, So; Bartlett, Rodney J.

2003-04-01T23:59:59.000Z

483

Nondegenerate parametric generation of 2.2-mJ, few-cycle 2.05-?m pulses using a mixed phase matching scheme  

SciTech Connect (OSTI)

We describe the production of 2.2-mJ, ?6 optical-cycle-long mid-infrared laser pulses with a carrier wavelength of 2.05 ?m in a two-stage ?-BaB{sub 2}O{sub 4} nondegenerate optical parametric amplifier design with a mixed phase matching scheme, which is pumped by a standard Ti:sapphire chirped-pulse amplification system. It is demonstrated that relatively high pulse energies, short pulse durations, high stability, and excellent beam profiles can be obtained using this simple approach, even without the use of optical parametric chirped-pulse amplification.

Xu, Guibao; Wandel, Scott F.; Jovanovic, Igor, E-mail: ijovanovic@psu.edu [Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)] [Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

2014-02-15T23:59:59.000Z

484

A kinetic scheme for transient mixed flows in non uniform closed pipes: a global manner to upwind all the source terms  

E-Print Network [OSTI]

We present a numerical kinetic scheme for an unsteady mixed pressurised and free surface model. This model has a source term depending on both the space variable and the unknown, U, of the system. The source term is composed by a topography, a section variation, a curvature (also called corrective) and a friction term. Using the Finite Volume and Kinetic (FVK) framework, we propose an approximation of the source terms following the principle of interfacial upwind with a kinetic interpretation: the source term is not treated as a volumic term, but included in the numerical fluxes. Then, several numerical tests are presented.

Bourdarias, Christian; Gerbi, Stphane

2009-01-01T23:59:59.000Z

485

Work Breakdown Structure and Plant/Equipment Designation System Numbering Scheme for the High Temperature Gas- Cooled Reactor (HTGR) Component Test Capability (CTC)  

SciTech Connect (OSTI)

This white paper investigates the potential integration of the CTC work breakdown structure numbering scheme with a plant/equipment numbering system (PNS), or alternatively referred to in industry as a reference designation system (RDS). Ideally, the goal of such integration would be a single, common referencing system for the life cycle of the CTC that supports all the various processes (e.g., information, execution, and control) that necessitate plant and equipment numbers be assigned. This white paper focuses on discovering the full scope of Idaho National Laboratory (INL) processes to which this goal might be applied as well as the factors likely to affect decisions about implementation. Later, a procedure for assigning these numbers will be developed using this white paper as a starting point and that reflects the resolved scope and outcome of associated decisions.

Jeffrey D Bryan

2009-09-01T23:59:59.000Z

486

Probing adsorbate dynamics with chirped laser pulses in a single-pulse scheme F. Steeb,1 S. Mathias,1 M. Wiesenmayer,2 A. Fischer,1 M. Aeschlimann,1 M. Bauer,2,*, and J. P. Gauyacq3,4,*,  

E-Print Network [OSTI]

Probing adsorbate dynamics with chirped laser pulses in a single-pulse scheme F. Steeb,1 S. Mathias of the adsorbate mo- tion. The results enable us to assign characteristic chirped-pulse 2PPE features to the ultrafast adsorbate dynamics associated with the excited state lifetime and the adsorbate motion

Aeschlimann, Martin

487

UWA OS-HELP LOAN APPLICATION FH014.2008 CRICOS Provider Number 00126 January 14 OS-HELP is an Australian Government loan scheme for eligible students undertaking part of their study overseas. OS-  

E-Print Network [OSTI]

UWA OS-HELP LOAN APPLICATION FH014.2008 CRICOS Provider Number 00126 January 14 OS-HELP is an Australian Government loan scheme for eligible students undertaking part of their study overseas. OS- HELP and other travel expenses. Please refer to the UWA OS-HELP Guidelines and Study Assist website

Tobar, Michael

488

Analysis of the phase transition in the $2D$ Ising ferromagnet using a Lempel-Ziv string parsing scheme and black-box data-compression utilities  

E-Print Network [OSTI]

In this work we consider information-theoretical observables to analyze short symbolic sequences, comprising time-series that represent the orientation of a single spin in a $2D$ Ising ferromagnet on a square lattice of size $L^2=128^2$, for different system temperatures $T$. The latter were chosen from an interval enclosing the critical point $T_{\\rm c}$ of the model. At small temperatures the sequences are thus very regular, at high temperatures they are maximally random. In the vicinity of the critical point, nontrivial, long-range correlations appear. Here, we implement estimators for the entropy rate, excess entropy (i.e. "complexity") and multi-information. First, we implement a Lempel-Ziv string parsing scheme, providing seemingly elaborate entropy rate and multi-information estimates and an approximate estimator for the excess entropy. Furthermore, we apply easy-to-use black-box data compression utilities, providing approximate estimators only. For comparison and to yield results for benchmarking purp...

Melchert, O

2014-01-01T23:59:59.000Z

489

A public choice view on the climate and energy policy mix in the EU How do the emissions trading scheme and support for renewable energies interact?  

Science Journals Connector (OSTI)

Abstract In this paper, we analyze the rationale for an energy policy mix when the European Emissions Trading Scheme (ETS) is considered from a public choice perspective. That is, we argue that the economic textbook model of the ETS implausibly assumes (1) efficient policy design and (2) climate protection as the single objective of policy intervention. Contrary to these assumptions, we propose that the ETS originates from a political bargaining game within a context of multiple policy objectives. In particular, the emissions cap is negotiated between regulators and emitters with the emitters' abatement costs as crucial bargaining variable. This public choice view yields striking implications for an optimal policy mix comprising RES supporting policies. Whereas the textbook model implies that the ETS alone provides sufficient climate protection, our analysis suggests that support for renewable energies (1) contributes to a more effective ETS-design and (2) may even increase the overall efficiency of climate and energy policy if other externalities and policy objectives besides climate protection are considered. Thus, our analysis also shows that a public choice view not necessarily entails negative evaluations concerning efficiency and effectiveness of a policy mix.

Erik Gawel; Sebastian Strunz; Paul Lehmann

2014-01-01T23:59:59.000Z

490

Pressure-induced phase transformations in alkali-metal hydrides calculated using an improved linear-muffin-tin-orbitalatomic-sphere-approximation energy scheme  

Science Journals Connector (OSTI)

A scheme for the calculation of total energies from first principles is described which is intermediate between the popular linear muffin-tin-orbital method in the atomic-sphere approximation (LMTO-ASA) and an exact full-potential treatment. The local-density total energy is evaluated accurately for the output charge density from the ASA potential. This method is applied to the study of static structural properties and the pressure-induced phase transformation from B1 (NaCl-structure) to B2 (CsCl-structure) phases for the partially ionic alkaki-metal hydrides NaH and KH and the alkali halide NaCl. Good agreement with experimental transition pressures and volumes is obtained. The series NaH, KH, and NaCl shows the observed strong cation and weak anion dependence. Charge densities and band structures are given at zero and high pressure. Calculated energy-volume curves for LiH show no transition up to 1 Mbar, in agreement with experimental data.

C. O. Rodriguez and M. Methfessel

1992-01-01T23:59:59.000Z

491

Different process schemes for converting light straight run and fluid catalytic cracking naphthas in a FCC unit for maximum propylene production  

Science Journals Connector (OSTI)

Light straight run (LSR) and fluid catalytic cracking (FCCN) naphthas were cracked in a transported bed reactor (MicroDowner) and in a fixed bed reactor (MAT) over a commercial Y zeolite based catalyst, over a commercial ZSM-5 zeolite based additive, and over a mixture of both at selected conditions. Based on the mechanisms through which naphtha hydrocarbons are converted, we evaluated the best alternatives for processing these streams to produce light olefins and/or to reduce olefins content in commercial gasoline. The experimental set-up allowed us to simulate the cracking behaviour of the different naphtha streams in a fluid catalytic cracking (FCC) unit by different processing schemes. Results indicate that LSR only cracks at high severity, yielding large amounts of dry gas. Despite its high olefins content, FCCN practically does not crack when it is fed together with gas oil feed. When cracking FCCN alone at typical gas oil cracking conditions, olefins are transformed preferentially into naphtha-range isoparaffins and aromatics, and when cracking FCCN at high severity, olefins are transformed preferentially into propylene and butylenes. Finally, cracking naphtha in the stripper produces some propylene and increases the aromatics in the remaining gasoline.

Avelino Corma; FranciscoV Melo; Laurent Sauvanaud; F.J Ortega

2004-01-01T23:59:59.000Z

492

RosenbaumScheme05.sxw  

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

Rosenbaum Rosenbaum s Proposal for Locally Increasing the Effective Vertical Emittance of the APS Beam M. Borland, L. Emery, N. Sereno AOD/OAG June 2002 Introduction At the APS Retreat in May 2002, G. Rosenbaum proposed a method for increasing the effective vertical emittance of the APS beam. His proposal, illustrated in Figure 1, is to use a rapidly-modulated four-magnet vertical position bump in a single straight section. The proposed modulation frequency is a 10-kHz triangle wave, with a kick angle of 0.65 mrad. There are several aspects of this proposal that may be problematical: 1. The high modulation frequency will require the use of a ceramic chamber with a thin conductive coating, similar to what is used for the injection kicker magnets. This is not necessarily a problem, but the following aspects need to be examined:

493

AngaraYenisei Hydroelectric Schemes  

Science Journals Connector (OSTI)

... the Rivers Angara and Yenisei will have 'cascades' of six dams, providing power for hydroelectric stations. The largest of these, situated at Bratsk, on the River Angara, was ...

1961-10-14T23:59:59.000Z

494

Security Scheme in Wireless Grid  

Science Journals Connector (OSTI)

In this paper, we considered the two security services of authorization and data security in wireless Grid. The security issues is related to authorization and security, specific to Grid, the characteristics of t...

Yue Hong Zhang; Li Hao; Zhong Shan Yang

2011-01-01T23:59:59.000Z

495

Potential residential PV development in Chile: The effect of Net Metering and Net Billing schemes for grid-connected PV systems  

Science Journals Connector (OSTI)

Abstract In recent years the global photovoltaic (PV) market has expanded rapidly due to a sharp decline in PV prices and increased attention to the importance of sustainable energy. Northern Chile has one of the highest irradiance levels in the world as well as one the highest electricity rates in Latin America. Because of these conditions, Chile is one of very few countries where several PV projects are being developed without government subsidies and consequently, the PV industry is experiencing rapid growth. This paper reviews the opportunity to take advantage of these market conditions within the residential sector, modeling PV arrays across 10 cities in Chile. A detailed modeling of PV systems is performed to achieve an accurate analysis of energy production and electricity cost, using local resource data, optimal array orientation and inclination, and production losses. A review of how Net Metering and Net Billing affect the value of the PV production is applied and a comparison using levelized cost of electricity (LCOE) is conducted. Net Metering is found to be a better policy choice to promote PV systems than Net Billing because energy injected into the electrical network is paid at the complete retail rate. However, in developed countries this kind of policy is unlikely to be supported because of it?s economic unfeasibility. Under a Net Billing scheme a consumer will see an advantage when energy is recorded over longer time intervals and when installing a system with smaller capacity relative to household electricity consumption. This prevents excess generation from being injected into the network which would be bought by the utility at lower prices than the retail rate. Payback periods are found to be low, between 6 years in northern areas with high retail rates and 13 years in other areas with lower radiation and retail rates.

David Watts; Marcelo F. Valds; Danilo Jara; Andrea Watson

2015-01-01T23:59:59.000Z

496

Enhanced geothermal systems (EGS) with CO2 as heat transmission fluid--A scheme for combining recovery of renewable energy with geologic storage of CO2  

SciTech Connect (OSTI)

It has been suggested that enhanced geothermal systems (EGS) may be operated with supercritical CO{sub 2} instead of water as heat transmission fluid (D.W. Brown, 2000). Such a scheme could combine recovery of geothermal energy with simultaneous geologic storage of CO{sub 2}, a greenhouse gas. At geothermal temperature and pressure conditions of interest, the flow and heat transfer behavior of CO{sub 2} would be considerably different from water, and chemical interactions between CO{sub 2} and reservoir rocks would also be quite different from aqueous fluids. This paper summarizes our research to date into fluid flow and heat transfer aspects of operating EGS with CO{sub 2}. (Chemical aspects of EGS with CO{sub 2} are discussed in a companion paper; Xu and Pruess, 2010.) Our modeling studies indicate that CO{sub 2} would achieve heat extraction at larger rates than aqueous fluids. The development of an EGS-CO{sub 2} reservoir would require replacement of the pore water by CO{sub 2} through persistent injection. We find that in a fractured reservoir, CO{sub 2} breakthrough at production wells would occur rapidly, within a few weeks of starting CO{sub 2} injection. Subsequently a two-phase water-CO{sub 2} mixture would be produced for a few years,followed by production of a single phase of supercritical CO{sub 2}. Even after single-phase production conditions are reached,significant dissolved water concentrations will persist in the CO{sub 2} stream for many years. The presence of dissolved water in the production stream has negligible impact on mass flow and heat transfer rates.

Pruess, K.; Spycher, N.

2009-05-01T23:59:59.000Z

497

Calculating the binding free energies of charged species based on explicit-solvent simulations employing lattice-sum methods: An accurate correction scheme for electrostatic finite-size effects  

SciTech Connect (OSTI)

The calculation of a protein-ligand binding free energy based on molecular dynamics (MD) simulations generally relies on a thermodynamic cycle in which the ligand is alchemically inserted into the system, both in the solvated protein and free in solution. The corresponding ligand-insertion free energies are typically calculated in nanoscale computational boxes simulated under periodic boundary conditions and considering electrostatic interactions defined by a periodic lattice-sum. This is distinct from the ideal bulk situation of a system of macroscopic size simulated under non-periodic boundary conditions with Coulombic electrostatic interactions. This discrepancy results in finite-size effects, which affect primarily the charging component of the insertion free energy, are dependent on the box size, and can be large when the ligand bears a net charge, especially if the protein is charged as well. This article investigates finite-size effects on calculated charging free energies using as a test case the binding of the ligand 2-amino-5-methylthiazole (net charge +1 e) to a mutant form of yeast cytochrome c peroxidase in water. Considering different charge isoforms of the protein (net charges ?5, 0, +3, or +9 e), either in the absence or the presence of neutralizing counter-ions, and sizes of the cubic computational box (edges ranging from 7.42 to 11.02 nm), the potentially large magnitude of finite-size effects on the raw charging free energies (up to 17.1 kJ?mol{sup ?1}) is demonstrated. Two correction schemes are then proposed to eliminate these effects, a numerical and an analytical one. Both schemes are based on a continuum-electrostatics analysis and require performing Poisson-Boltzmann (PB) calculations on the protein-ligand system. While the numerical scheme requires PB calculations under both non-periodic and periodic boundary conditions, the latter at the box size considered in the MD simulations, the analytical scheme only requires three non-periodic PB calculations for a given system, its dependence on the box size being analytical. The latter scheme also provides insight into the physical origin of the finite-size effects. These two schemes also encompass a correction for discrete solvent effects that persists even in the limit of infinite box sizes. Application of either scheme essentially eliminates the size dependence of the corrected charging free energies (maximal deviation of 1.5 kJ?mol{sup ?1}). Because it is simple to apply, the analytical correction scheme offers a general solution to the problem of finite-size effects in free-energy calculations involving charged solutes, as encountered in calculations concerning, e.g., protein-ligand binding, biomolecular association, residue mutation, pK{sub a} and redox potential estimation, substrate transformation, solvation, and solvent-solvent partitioning.

Rocklin, Gabriel J. [Department of Pharmaceutical Chemistry, University of California San Francisco, 1700 4th St., San Francisco, California 94143-2550, USA and Biophysics Graduate Program, University of California San Francisco, 1700 4th St., San Francisco, California 94143-2550 (United States)] [Department of Pharmaceutical Chemistry, University of California San Francisco, 1700 4th St., San Francisco, California 94143-2550, USA and Biophysics Graduate Program, University of California San Francisco, 1700 4th St., San Francisco, California 94143-2550 (United States); Mobley, David L. [Departments of Pharmaceutical Sciences and Chemistry, University of California Irvine, 147 Bison Modular, Building 515, Irvine, California 92697-0001, USA and Department of Chemistry, University of New Orleans, 2000 Lakeshore Drive, New Orleans, Louisiana 70148 (United States)] [Departments of Pharmaceutical Sciences and Chemistry, University of California Irvine, 147 Bison Modular, Building 515, Irvine, California 92697-0001, USA and Department of Chemistry, University of New Orleans, 2000 Lakeshore Drive, New Orleans, Louisiana 70148 (United States); Dill, Ken A. [Laufer Center for Physical and Quantitative Biology, 5252 Stony Brook University, Stony Brook, New York 11794-0001 (United States)] [Laufer Center for Physical and Quantitative Biology, 5252 Stony Brook University, Stony Brook, New York 11794-0001 (United States); Hnenberger, Philippe H., E-mail: phil@igc.phys.chem.ethz.ch [Laboratory of Physical Chemistry, Swiss Federal Institute of Technology, ETH, 8093 Zrich (Switzerland)

2013-11-14T23:59:59.000Z

498

Categorical Exclusion Determinations: Alaska | Department of Energy  

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

December 10, 2009 December 10, 2009 CX-000125: Categorical Exclusion Determination Native Village of Chitina Renewable Energy Technology - Solar Array for Community Hall CX(s) Applied: B3.6, B5.1, B4.12 Date: 12/10/2009 Location(s): Chitina, Alaska Office(s): Energy Efficiency and Renewable Energy December 7, 2009 CX-000111: Categorical Exclusion Determination Koniag Incorporated Renewable Energy Technologies - Solar CX(s) Applied: B3.6, B5.1 Date: 12/07/2009 Location(s): Alaska Office(s): Energy Efficiency and Renewable Energy December 4, 2009 CX-000104: Categorical Exclusion Determination Pedro Bay Native Village Technical Consulting Services for Mini Hydropower Feasibility Study CX(s) Applied: A9, A11 Date: 12/04/2009 Location(s): Alaska Office(s): Energy Efficiency and Renewable Energy

499

Categorical Exclusion Determinations: A11 | Department of Energy  

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

December 4, 2009 December 4, 2009 CX-000104: Categorical Exclusion Determination Pedro Bay Native Village Technical Consulting Services for Mini Hydropower Feasibility Study CX(s) Applied: A9, A11 Date: 12/04/2009 Location(s): Alaska Office(s): Energy Efficiency and Renewable Energy December 3, 2009 CX-000232: Categorical Exclusion Determination California City Long Beach CX(s) Applied: A11, B5.1 Date: 12/03/2009 Location(s): Long Beach, California Office(s): Energy Efficiency and Renewable Energy, Golden Field Office December 2, 2009 CX-001291: Categorical Exclusion Determination Training Programs, Energy Audit, and Energy Efficient Lighting Upgrades CX(s) Applied: A9, A11, B5.1 Date: 12/02/2009 Location(s): Cheyenne, Wyoming Office(s): Energy Efficiency and Renewable Energy December 2, 2009

500

Prediction of ungauged river basin for hydropower potential and flood risk mitigation: a case study at Gin River, Sri Lanka  

Science Journals Connector (OSTI)

A hydrologic study was performed for ungauged river basin of Sri Lanka to examine synthetic discharge relations. Rainfall-runoff relationships were used for identifying hydrological conditions of the Gin River basin. The peak discharge achieves within 4.74 hours from the onset of the rainstorm and 11.95 hours take to reach its normal discharge conditions. Stream frequency of the Gin River is 4.56 junctions/km while the channel slope gradient is 7.90 m/km. The regional coefficient of the catchment is 0.00296. Higher stream frequency and gentle channel slope were identified as flood triggering factors of the basin. Mini-hydropower systems were recognised as the most applicable and economical flood controlling hydraulic structures. Also, it can be utilised as a reliable energy source (8,630.0 kW).

A.S. Ratnayake; A. Pitawala

2014-01-01T23:59:59.000Z