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1

Continuing Development of Models Based on Spherical Geodesic Grids  

E-Print Network [OSTI]

Continuing Development of Models Based on Spherical Geodesic Grids Ross Heikes, Joon-Hee Jung, C to finite-difference operators 3) Some numerical results from an aqua-planet simulation #12;Part1: Geodesic -- array based The geodesic grid can be mapped to a set of square arrays. 1 3 4 5 6 7 8 9 10 11 12 13 14 15

Collett Jr., Jeffrey L.

2

Visualizing the Jablonowski Test Case on a Geodesic Grid at NERSC  

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

Jablonowski on geodesic grid Jablonowski test case on geodesic grid jablonowskiprabhat.png Accurate modeling of Earth's climate is one of the biggest challenges facing HPC today....

3

Analysis of grid imprinting on geodesic spherical icosahedral grids Pedro S. Peixoto, Saulo R. M. Barros  

E-Print Network [OSTI]

Analysis of grid imprinting on geodesic spherical icosahedral grids Pedro S. Peixoto, Saulo R. M-090 S~ao Paulo, Brazil Abstract Numerical grid imprinting errors have often been observed in global atmospheric models on icosahedral grids. In this paper we analyse the sources of grid imprinting error related

4

GeoF: Geodesic Forests for Learning Coupled Predictors P. Kontschieder  

E-Print Network [OSTI]

GeoF: Geodesic Forests for Learning Coupled Predictors P. Kontschieder P. Kohli J. Shotton A are captured via new long-range, soft connectivity features, computed via generalized geodesic distance trans

Kohli, Pushmeet

5

Visualizing the Jablonowski Test Case on a Geodesic Grid at NERSC  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered energy consumption by sectorlongUpdatesValleyJablonowski on geodesic grid

6

Non-geodesic motion in $f({\\mathcal G})$ gravity with non-minimal coupling  

E-Print Network [OSTI]

The dynamics of test particles in $f(\\mathcal G)$ modified Gauss-Bonnet gravity is investigated. It is shown that in $f({\\mathcal G})$ gravity models with non-minimal coupling to matter, particles experience an extra force normal to their four-velocities and as a result move along non- geodesic world-lines. The explicit form of the extra force depends on the function of the Gauss-Bonnet term included in coupling term. The effects of this force on the relative accelerations of particles are studied.

Morteza Mohseni

2009-11-14T23:59:59.000Z

7

Geodesic Lines, . . . Covariant . . .  

E-Print Network [OSTI]

Geodesic Lines, . . . Covariant . . . Home Page Title Page Page 781 of 818 Go Back Full Screen Close Quit 14.11. Geodesic Lines, Local Gauss-Bonnet Theorem Geodesics play a very important role in surface theory and in dynamics. One of the main reasons why geodesics are so important

Gallier, Jean

8

Normal Curvature . . . Geodesic Curvature . . .  

E-Print Network [OSTI]

Normal Curvature . . . Geodesic Curvature . . . Home Page Title Page Page 683 of 711 Go Back Full quadratic form associated with a surface. #12;Normal Curvature . . . Geodesic Curvature . . . Home Page Title Page Page 684 of 711 Go Back Full Screen Close Quit The component g is called the geodesic

Gallier, Jean

9

Geodesic Patterns Helmut Pottmann  

E-Print Network [OSTI]

Geodesic Patterns Helmut Pottmann KAUST, TU Wien Qixing Huang Stanford University Bailin Deng TU University Johannes Wallner TU Graz, TU Wien Figure 1: Geodesic patterns on freeform surfaces. Left into parts which can be covered by geodesic strips of roughly constant width. Right: A timber construction

Pottmann, Helmut

10

Geodesic distances in Liouville quantum gravity  

E-Print Network [OSTI]

In order to study the quantum geometry of random surfaces in Liouville gravity, we propose a definition of geodesic distance associated to a Gaussian free field on a regular lattice. This geodesic distance is used to numerically determine the Hausdorff dimension associated to shortest cycles of 2d quantum gravity on the torus coupled to conformal matter fields, showing agreement with a conjectured formula by Y. Watabiki. Finally, the numerical tools are put to test by quantitatively comparing the distribution of lengths of shortest cycles to the corresponding distribution in large random triangulations.

Jan Ambjorn; Timothy Budd

2014-11-12T23:59:59.000Z

11

Geodesic Completeness around Sudden Singularities  

E-Print Network [OSTI]

In this talk we analyze the effect of recently proposed classes of sudden future singularities on causal geodesics of FLRW spacetimes. Geodesics are shown to be extendible and just the equations for geodesic deviation are singular, although tidal forces are not strong enough to produce a Big Rip.

L. Fernández-Jambrina; R. Lazkoz

2009-03-31T23:59:59.000Z

12

Geodesic spaces : momentum Groups : symmetry  

E-Print Network [OSTI]

Geodesic spaces : momentum :: Groups : symmetry Vaughan Pratt Stanford University BLAST 2010 a · b denoting b rotated 90 degrees about a. End of reprise. 3. This talk; Geodesic spaces At FMCS. as points evenly spaced along a geodesic , right distributivity expresses a symmetry of about an arbitrary

Pratt, Vaughan

13

Equidistribution results for geodesic flows  

E-Print Network [OSTI]

Using the works of Ma\\~n\\'e \\cite{Ma} and Paternain \\cite{Pat} we study the distribution of geodesic arcs with respect to equilibrium states of the geodesic flow on a closed manifold, equipped with a $\\mathcal{C}^{\\infty}$ Riemannian metric. We prove large deviations lower and upper bounds and a contraction principle for the geodesic flow in the space of probability measures of the unit tangent bundle. We deduce a way of approximating equilibrium states for continuous potentials.

Abdelhamid Amroun

2011-09-15T23:59:59.000Z

14

Geodesic measures of the landscape  

E-Print Network [OSTI]

We study the landscape models of eternal inflation with an arbitrary number of different vacua states, both recyclable and terminal. We calculate the abundances of bubbles following different geodesics. We show that the results obtained from generic time-like geodesics have undesirable dependence on initial conditions. In contrast, the predictions extracted from ``eternal'' geodesics, which never enter terminal vacua, do not suffer from this problem. We derive measure equations for ensembles of geodesics and discuss possible interpretations of initial conditions in eternal inflation.

Vitaly Vanchurin

2007-01-26T23:59:59.000Z

15

A mathematical basis for automated structured grid generation with close coupling to the flow solver  

SciTech Connect (OSTI)

The first two truncation error terms resulting from finite differencing the convection terms in the two-dimensional Navier-Stokes equations are examined for the purpose of constructing two-dimensional grid generation schemes. These schemes are constructed such that the resulting grid distributions drive the error terms to zero. Two sets of equations result, one for each error term, that show promise in generating grids that provide more accurate flow solutions and possibly faster convergence. One set results in an algebraic scheme that drives the first truncation term to zero, and the other a hyperbolic scheme that drives the second term to zero. Also discussed is the possibility of using the schemes in sequentially constructing a grid in an iterative algorithm involving the flow solver. In essence, the process is envisioned to generate not only a flow field solution but the grid as well, rendering the approach a hands-off method for grid generation

Barnette, D.W.

1998-02-01T23:59:59.000Z

16

The electron geodesic acoustic mode  

SciTech Connect (OSTI)

In this report, a novel new mode, named the electron geodesic acoustic mode, is presented. This mode can occur in toroidal plasmas like the conventional geodesic acoustic mode (GAM). The frequency of this new mode is much larger than that of the conventional GAM by a factor equal to the square root of the ion to electron mass ratio.

Chakrabarti, N. [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Calcutta 700 064 (India); Guzdar, P. N. [Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742 (United States); Kaw, P. K. [Institute for Plasma Research Bhat, Gandhinagar 382428 (India)

2012-09-15T23:59:59.000Z

17

Geodesic deviation and gravitational waves  

E-Print Network [OSTI]

The detection of gravitational waves based on the geodesic deviation equation is discussed. In particular, it is shown that the only non-vanishing components of the wave field in the conventional traceless-transverse gauge in linearized general relativity do not enter the geodesic deviation equation, and therefore, apparently, no effect is predicted by that equation in that specific gauge. The reason is traced back to the fact that the geodesic deviation equation is written in terms of a coordinate distance, which is not a directly measurable quantity. On the other hand, in the proper Lorentz frame of the detector, the conventional result described in standard textbooks holds.

M. Leclerc

2006-05-24T23:59:59.000Z

18

Second Order Geodesic Corrections to Cosmic Shear  

E-Print Network [OSTI]

We consider the impact of second order corrections to the geodesic equation governing gravitational lensing. We start from the full second order metric, including scalar, vector and tensor perturbations, and retain all relevant contributions to the cosmic shear corrections that are second order in the gravitational potential. The relevant terms are: the nonlinear evolution of the scalar gravitational potential, the Born correction, and lens-lens coupling. No other second order terms contribute appreciably to the lensing signal. Since ray-tracing algorithims currently include these three effects, this derivation serves as rigorous justification for the numerical predictions.

S. Dodelson; E. W. Kolb; S. Matarrese; A. Riotto; P. Zhang

2005-03-07T23:59:59.000Z

19

On Geodesic Motion in Horava-Lifshitz Gravity  

E-Print Network [OSTI]

We propose an action for a free particle in Horava-Lifshitz gravity based on Foliation Preserving Diffeomorphisms. The action reduces to the usual relativistic action in the low energy limit and allows for subluminal and superluminal motions with upper and lower bounds on velocity respectively. We find that deviation from general relativity is governed by a position dependent coupling constant which also depends on the mass of the particle. As a result, light-like geodesics are not affected whereas massive particles follow geodesics that become mass dependent and hence the equivalence principle is violated. We make an exact study for geodesics in flat space and a qualitative analysis for those in a spherically symmetric curved background.

Amir Esmaeil Mosaffa

2010-01-04T23:59:59.000Z

20

Coupled fluid structure simulations for application to grid-to-rod fretting  

E-Print Network [OSTI]

Grid-to-rod fretting (GTRF) has been the major cause of fuel leakage in Pressurized Water Reactors (PWRs) for the past ten years. It is responsible for over 70% of the fuel leaking in PWRs in the United States. The Consortium ...

Tan-Torres, Sasha Angela

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Geodesic as limits of geodesics on PL-surfaces Andre Lieutier  

E-Print Network [OSTI]

Geodesic as limits of geodesics on PL-surfaces Andr´e Lieutier Boris Thibert Last modification of geodesics on PL-surfaces and in particular on subdivision surfaces. More precisely, if a sequence (Tn)nN of PL-surfaces converges in distance and in normals to a smooth surface S and if Cn is a geodesic of Tn

Paris-Sud XI, Université de

22

Geodesic Methods for Shape and Surface Processing  

E-Print Network [OSTI]

Geodesic Methods for Shape and Surface Processing Gabriel Peyr´e and Laurent Cohen Ceremade, UMR the theory and practice of the nu- merical computation of geodesic distances on Riemannian manifolds be preferred). Using this local tensor field, the geodesic distance is used to solve many problems of practical

Paris-Sud XI, Université de

23

Geodesic Shape Retrieval via Optimal Mass Transport  

E-Print Network [OSTI]

Geodesic Shape Retrieval via Optimal Mass Transport Julien Rabin, Gabriel Peyr´e, and Laurent D presents a new method for 2-D and 3-D shape retrieval based on geodesic signatures. These signatures of geodesic distance maps to each point. The resulting high dimensional distributions are matched to perform

Boyer, Edmond

24

Geodesic-invariant equations of gravitation  

E-Print Network [OSTI]

Einstein's equations of gravitation are not invariant under geodesic mappings, i. e. under a certain class of mappings of the Christoffel symbols and the metric tensor which leave the geodesic equations in a given coordinate system invariant. A theory in which geodesic mappings play the role of gauge transformations is considered.

Leonid V. Verozub

2008-02-04T23:59:59.000Z

25

GEODESIC INTERSECTIONS IN ARITHMETIC HYPERBOLIC 3-MANIFOLDS  

E-Print Network [OSTI]

GEODESIC INTERSECTIONS IN ARITHMETIC HYPERBOLIC 3-MANIFOLDS Kerry N. Jones Alan W. Reid Abstract. It was shown by Chinburg and Reid that there exist closed hyperbolic 3-manifolds in which all closed geodesics closed geodesics simple and disjoint. The natural conjecture arose that the Chinburg-Reid examples also

Jones, Kerry N.

26

AUSTRIAN GRID AUSTRIAN GRID  

E-Print Network [OSTI]

AUSTRIAN GRID 1/18 AUSTRIAN GRID THE INITIAL VERSION OF SEE-GRID Document Identifier: AG-DA1c-1) #12;AUSTRIAN GRID 2/18 Delivery Slip Name Partner Date Signature From Károly Bósa RISC 31 See cover on page 3 #12;AUSTRIAN GRID 3/18 THE INITIAL VERSION OF SEE-GRID Karoly Bosa Wolfgang

27

Computing Geodesic Spectra of Surfaces Stony Brook University  

E-Print Network [OSTI]

Computing Geodesic Spectra of Surfaces Miao Jin Stony Brook University Feng Luo Rutgers University on the surface has a unique geodesic. The lengths of all closed geodesics form the geodesic spectrum. The map from the fundamental group to the geodesic spectrum completely determines the conformal structure

Jin, Miao

28

Geodesic stability, Lyapunov exponents and quasinormal modes  

E-Print Network [OSTI]

Geodesic motion determines important features of spacetimes. Null unstable geodesics are closely related to the appearance of compact objects to external observers and have been associated with the characteristic modes of black holes. By computing the Lyapunov exponent, which is the inverse of the instability timescale associated with this geodesic motion, we show that, in the eikonal limit, quasinormal modes of black holes in any dimensions are determined by the parameters of the circular null geodesics. This result is independent of the field equations and only assumes a stationary, spherically symmetric and asymptotically flat line element, but it does not seem to be easily extendable to anti-de Sitter spacetimes. We further show that (i) in spacetime dimensions greater than four, equatorial circular timelike geodesics in a Myers-Perry black hole background are unstable, and (ii) the instability timescale of equatorial null geodesics in Myers-Perry spacetimes has a local minimum for spacetimes of dimension d > 5.

Vitor Cardoso; Alex S. Miranda; Emanuele Berti; Helvi Witek; Vilson T. Zanchin

2009-03-12T23:59:59.000Z

29

GEODESIC HAM-SANDWICH CUTS Prosenjit Bose  

E-Print Network [OSTI]

GEODESIC HAM-SANDWICH CUTS Prosenjit Bose Erik D. Demaine Ferran Hurtado§ John Iacono¶ Stefan contains r red points and b blue points in its interior. Let n = m + r + b. A ham-sandwich geodesic and the blue points. We present an O(n log k)-time algorithm for finding a ham-sandwich geodesic. We also show

Iacono, John

30

Geodesic Study of Regular Hayward Black Hole  

E-Print Network [OSTI]

This paper is devoted to study the geodesic structure of regular Hayward black hole. The timelike and null geodesic have been studied explicitly for radial and non-radial motion. For timelike and null geodesic in radial motion there exists analytical solution, while for non-radial motion the effective potential has been plotted, which investigates the position and turning points of the particle. It has been found that massive particle moving along timelike geodesics path are dragged towards the BH and continues move around BH in particular orbits.

G. Abbas; U. Sabiullah

2014-06-03T23:59:59.000Z

31

The geodesic flow on a Riemannian supermanifold  

E-Print Network [OSTI]

We give a natural definition of geodesics on a Riemannian supermanifold and extend the usual geodesic flow defined on the cotangent bundle of the body of the supermanifold, associated to the induced Riemannian structure on the body, to a geodesic "superflow" on the cotangent bundle of the supermanifold. Integral curves of this flow turn out to be in natural bijection with geodesics on the Riemannian supermanifold. We also construct the corresponding exponential map and generalize the well-known faithful linearization of isometries to Riemannian supermanifolds.

Stéphane Garnier; Tilmann Wurzbacher

2011-07-09T23:59:59.000Z

32

Geodesics and Geodesic Deviation in static Charged Black Holes  

E-Print Network [OSTI]

The radial motion along null geodesics in static charged black hole space-times, in particular, the Reissner-Nordstr\\"om and stringy charged black holes are studied. We analyzed the properties of the effective potential. The circular photon orbits in these space-times are investigated. We found that the radius of circular photon orbits in both charged black holes are different and differ from that given in Schwarzschild space-time. We studied the physical effects of the gravitational field between two test particles in stringy charged black hole and compared the results with that given in Schwarzschild and Reissner-Nordstr\\"om black holes.

Ragab M. Gad

2010-03-03T23:59:59.000Z

33

GEODESIC INTERACTIVE SEGMENTATION IN THE COLOR MONOGENIC SIGNAL Explora Nova,  

E-Print Network [OSTI]

GEODESIC INTERACTIVE SEGMENTATION IN THE COLOR MONOGENIC SIGNAL FRAMEWORK G. Demarcq Explora Nova is based on the computation of geodesic distances within color mono- genic signal (CMS) fields-- Interactive Segmentation, Clifford Alge- bra, Color Monogenic Signal, Geodesic Distances 1. INTRODUCTION

Paris-Sud XI, Université de

34

Geodesic study of a charged black hole  

E-Print Network [OSTI]

The behavior of the timelike and null geodesics of charged E. Ay$\\acute{o}$n-Beato and A. Garcia (ABG) black hole are investigated. For circular and radial geodesics, we investigate all the possible motions by plotting the effective potentials for different parameters. In conclusion, we have shown that there is no phenomenon of \\textit{superradiance} in this case.

Mehedi Kalam; Nur Farhad; Sk. Monowar Hossein

2013-03-17T23:59:59.000Z

35

Integrable magnetic geodesic flows on Lie groups  

E-Print Network [OSTI]

Right-invariant geodesic flows on manifolds of Lie groups associated with 2-cocycles of corresponding Lie algebras are discussed. Algebra of integrals of motion for magnetic geodesic flows is considered and necessary and sufficient condition of integrability in quadratures is formulated. Canonic forms for 2-cocycles of all 4-dimensional Lie algebras are given and integrable cases among them are separated.

Alexey A. Magazev; Igor V. Shirokov; Yuriy Y. Yurevich

2011-11-03T23:59:59.000Z

36

A Remark About the "Geodesic Principle" in General Relativity  

E-Print Network [OSTI]

A Remark About the "Geodesic Principle" in General Relativity Version 3.0 David B. Malament is the Geodesic Principle: Free massive point particles traverse timelike geodesics. One can think of it as a relativistic version of Newton's first law of motion. It is often claimed that the geodesic principle can

Barrett, Jeffrey A.

37

Geodesic Shape Spaces of Surfaces of Xiuwen Liu1  

E-Print Network [OSTI]

Geodesic Shape Spaces of Surfaces of Genus Zero Xiuwen Liu1 , Washington Mio2 , Yonggang Shi3 surfaces im- mersed in Euclidean space Rk . The spaces are equipped with geodesic metrics that depend on the tension and rigidity of the surfaces. We de- velop algorithms to calculate geodesics and geodesic

Paris-Sud XI, Université de

38

Geodesic Bezier Curves on Triangle Meshes Dimas Martinez Morera  

E-Print Network [OSTI]

Geodesic B´ezier Curves on Triangle Meshes Dimas Mart´inez Morera IMPA - Brazil / ICIMAF - Cuba generalization of B´ezier curves. Thus, we call them "Geodesic B´ezier Curves". Geodesic B´ezier curves, but geodesics connecting the control points. This imposes the necessity of modifying the inter- polation step

39

Geodesic conic subdivision curves on surfaces J. Estrada Sarlabous  

E-Print Network [OSTI]

Geodesic conic subdivision curves on surfaces J. Estrada Sarlabous V. Hern´andez Mederos N. L Matem´atica UFAL Maceio, Brazil Email: dimas@mat.ufal.br Fig. 1. Geodesic conic subdivision curves is inspired in the concept of geodesic B´ezier curves. Starting with a geodesic control polygon with vertices

40

Geodesic Reduction via Frame Bundle Geometry  

E-Print Network [OSTI]

A manifold with an arbitrary affine connection is considered and the geodesic spray associated with the connection is studied in the presence of a Lie group action. In particular, results are obtained that provide insight into the structure of the reduced dynamics associated with the given invariant affine connection. The geometry of the frame bundle of the given manifold is used to provide an intrinsic description of the geodesic spray. A fundamental relationship between the geodesic spray, the tangent lift and the vertical lift of the symmetric product is obtained, which provides a key to understanding reduction in this formulation.

Ajit Bhand

2010-02-22T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 1 Kinetic theory of Geodesic Acoustic  

E-Print Network [OSTI]

22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 1 Kinetic theory of Geodesic Acoustic Zonca, Liu Chen and Zhiyong Qiu #12;22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 2 Chen and Zhiyong Qiu #12;22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 3 2 Linear

Zonca, Fulvio

42

Separable geodesic action slicing in stationary spacetimes  

E-Print Network [OSTI]

A simple observation about the action for geodesics in a stationary spacetime with separable geodesic equations leads to a natural class of slicings of that spacetime whose orthogonal geodesic trajectories represent freely falling observers. The time coordinate function can then be taken to be the observer proper time, leading to a unit lapse function. This explains some of the properties of the original Painlev\\'e-Gullstrand coordinates on the Schwarzschild spacetime and their generalization to the Kerr-Newman family of spacetimes, reproducible also locally for the G\\"odel spacetime. For the static spherically symmetric case the slicing can be chosen to be intrinsically flat with spherically symmetric geodesic observers, leaving all the gravitational field information in the shift vector field.

Donato Bini; Andrea Geralico; Robert T. Jantzen

2014-08-22T23:59:59.000Z

43

Generating Geodesic Flows and Supergravity Solutions  

E-Print Network [OSTI]

We consider the geodesic motion on the symmetric moduli spaces that arise after timelike and spacelike reductions of supergravity theories. The geodesics correspond to timelike respectively spacelike $p$-brane solutions when they are lifted over a $p$-dimensional flat space. In particular, we consider the problem of constructing \\emph{the minimal generating solution}: A geodesic with the minimal number of free parameters such that all other geodesics are generated through isometries. We give an intrinsic characterization of this solution in a wide class of orbits for various supergravities in different dimensions. We apply our method to three cases: (i) Einstein vacuum solutions, (ii) extreme and non-extreme D=4 black holes in N=8 supergravity and their relation to N=2 STU black holes and (iii) Euclidean wormholes in $D\\geq 3$. In case (iii) we present an easy and general criterium for the existence of regular wormholes for a given scalar coset.

E. Bergshoeff; W. Chemissany; A. Ploegh; M. Trigiante; T. Van Riet

2008-10-30T23:59:59.000Z

44

Magnetic Geodesic Flows on Coadjoint Orbits  

E-Print Network [OSTI]

We describe a class of completely integrable $G$-invariant magnetic geodesic flows on (co)adjoint orbits of a compact connected Lie group $G$ with magnetic field given by the Kirillov-Konstant 2-form.

Alexey V. Bolsinov; Bozidar Jovanovic

2006-04-03T23:59:59.000Z

45

Geodesic completeness of diagonal $G_2$ metrics  

E-Print Network [OSTI]

In this talk a sufficient condition for a diagonal orthogonally transitive cylindrical $G_2$ metric to be geodesically complete is given. The condition is weak enough to comprise all known diagonal perfect fluid cosmological models that are non-singular.

L. Fernández-Jambrina

2009-04-10T23:59:59.000Z

46

A stochastic derivation of the geodesic rule  

E-Print Network [OSTI]

We argue that the geodesic rule, for global defects, is a consequence of the randomness of the values of the Goldstone field $\\phi$ in each causally connected volume. As these volumes collide and coalescence, $\\phi$ evolves by performing a random walk on the vacuum manifold $\\mathcal{M}$. We derive a Fokker-Planck equation that describes the continuum limit of this process. Its fundamental solution is the heat kernel on $\\mathcal{M}$, whose leading asymptotic behavior establishes the geodesic rule.

Nikos Kalogeropoulos

2006-02-09T23:59:59.000Z

47

C 2 DENSELY THE 2-SPHERE HAS AN ELLIPTIC CLOSED GEODESIC  

E-Print Network [OSTI]

C 2 DENSELY THE 2-SPHERE HAS AN ELLIPTIC CLOSED GEODESIC GONZALO CONTRERAS AND FERNANDO OLIVEIRA by a C 1 metric whose geodesic ow has an elliptic closed geodesic. In this paper we show how to overcome-intersecting closed geodesic. This is, the linearized Poincar#19;e map of the geodesic ow at the closed geodesic has

Contreras,Gonzalo

48

Challenges facing production grids  

SciTech Connect (OSTI)

Today's global communities of users expect quality of service from distributed Grid systems equivalent to that their local data centers. This must be coupled to ubiquitous access to the ensemble of processing and storage resources across multiple Grid infrastructures. We are still facing significant challenges in meeting these expectations, especially in the underlying security, a sustainable and successful economic model, and smoothing the boundaries between administrative and technical domains. Using the Open Science Grid as an example, I examine the status and challenges of Grids operating in production today.

Pordes, Ruth; /Fermilab

2007-06-01T23:59:59.000Z

49

Orbifold Riemann surfaces and geodesic algebras  

E-Print Network [OSTI]

We study the Teichm\\"uller theory of Riemann surfaces with orbifold points of order two using the fat graph technique. The previously developed technique of quantization, classical and quantum mapping-class group transformations, and Poisson and quantum algebras of geodesic functions is applicable to the surfaces with orbifold points. We describe classical and quantum braid group relations for particular sets of geodesic functions corresponding to $A_n$ and $D_n$ algebras and describe their central elements for the Poisson and quantum algebras.

L. O. Chekhov

2009-11-01T23:59:59.000Z

50

Time-warped Geodesic Regression , Nikhil Singh1  

E-Print Network [OSTI]

Time-warped Geodesic Regression Yi Hong1 , Nikhil Singh1 , Roland Kwitt3 , and Marc Niethammer1,2 1 geodesic regression with parametric time-warps. This allows, for example, to capture saturation effects. We demonstrate that by augmenting geodesic regression with parametric time-warp functions, we can

51

Landmark-based Geodesic Computation for Heuristically Driven Path Planning  

E-Print Network [OSTI]

Landmark-based Geodesic Computation for Heuristically Driven Path Planning Gabriel Peyr´e CMAP, UMR the geodesic path between two points on the surface, compution is needed on a large part of the surface when geodesic paths on images and 3D meshes. We use a heuris- tic to drive the front propagation procedure

Paris-Sud XI, Université de

52

A note on geodesic foliations on the torus Pierre Mounoud  

E-Print Network [OSTI]

A note on geodesic foliations on the torus Pierre Mounoud R´esum´e : Nous ´etudions les propri´et´es de leur feuilletages orthogonaux. Abstract: We look at geodesic foliations on the Lorentzian torus with leaves of different kind. We prove that they do not exist if the torus is geodesically

Mounoud, Pierre

53

STAR-FREE GEODESIC LANGUAGES FOR GROUPS SUSAN HERMILLER1  

E-Print Network [OSTI]

STAR-FREE GEODESIC LANGUAGES FOR GROUPS SUSAN HERMILLER1 , DEREK F. HOLT, AND SARAH REES Abstract cancellation con- ditions C (1/6) and C (1/4) - T (4) has the property that the set of all geodesics (over the same generating set) is a star-free regular language. Star-free regularity of the geodesic set is shown

Logan, David

54

Geodesic image regression with a sparse parameterization of diffeomorphisms  

E-Print Network [OSTI]

Geodesic image regression with a sparse parameterization of diffeomorphisms James Fishbaugh1 statistical analysis on longitudinal images. Geodesic models are particularly well suited for statistical, existing geodesic im- age regression models are parameterized by a large number of initial momenta, equal

Gerig, Guido

55

Fast Geodesic Active Contours Roman Goldenberg, Ron Kimmel,  

E-Print Network [OSTI]

Fast Geodesic Active Contours Roman Goldenberg, Ron Kimmel, Ehud Rivlin, and Michael Rudzsky use an unconditionally stable numerical scheme to im­ plement a fast version of the geodesic active objects by a dynamic model known as the `geodesic active contour' introduced in [4--7], see also [18, 28

Kimmel, Ron

56

Accurate Static Pose Estimation Combining Direct Regression and Geodesic Extrema  

E-Print Network [OSTI]

Accurate Static Pose Estimation Combining Direct Regression and Geodesic Extrema Brian Holt, Eng with the extraction of geodesic extrema to find extremities. We show how these approaches are complementary obtained by exploiting the geodesic structure supports accurate estimation of extremal points which cor

Bowden, Richard

57

GEODESIC NEIGHBORHOODS FOR PIECEWISE AFFINE INTERPOLATION OF SPARSE DATA  

E-Print Network [OSTI]

GEODESIC NEIGHBORHOODS FOR PIECEWISE AFFINE INTERPOLATION OF SPARSE DATA Gabriele Facciolo, Vicent of a reference image. The idea consists in defining for each sample a geodesic neighborhood and then fit a model. The core of the algorithm is a fast method for computing geodesic distances between image points, which has

58

GEODESIC FLOW, LEFT-HANDEDNESS, AND TEMPLATES PIERRE DEHORNOY  

E-Print Network [OSTI]

GEODESIC FLOW, LEFT-HANDEDNESS, AND TEMPLATES PIERRE DEHORNOY Abstract. We establish that, for every hyperbolic orbifolds of type (2, q, ) and for the orbifold of type (2, 3, 7), the geodesic flow orbits (i) bounds a Birkhoff section for the geodesic flow, and (ii) is a fibered link. These results

Paris-Sud XI, Université de

59

Visibility in Discrete Geometry: an application to discrete geodesic paths  

E-Print Network [OSTI]

Visibility in Discrete Geometry: an application to discrete geodesic paths David Coeurjolly that are visible from a source pixel. Based on these definitions, we define discrete geodesic paths in dis- crete domain with obstacles. This allows us to introduce a new geodesic metric in discrete geometry

Paris-Sud XI, Université de

60

Geodesic completeness for meromorphic metrics; the case of coercive ones  

E-Print Network [OSTI]

Geodesic completeness for meromorphic metrics; the case of coercive ones Claudio Meneghini August 5, 2004 #12;0.1. FOREWORD 1 0.1 Foreword This thesis is concerned with extending the idea of geodesic now confine ourselves to remarking that geodesics, and, more generally, paths, will be defined

Paris-Sud XI, Université de

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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.


61

Geodesic Remeshing Using Front Propagation Gabriel Peyre Laurent Cohen  

E-Print Network [OSTI]

Geodesic Remeshing Using Front Propagation Gabriel Peyr´e Laurent Cohen CMAP CEREMADE, UMR CNRS, we present a method for remeshing trian- gulated manifolds by using geodesic path calculations is automatically found. A geodesic Delaunay triangulation of the set of points is then created, using a Voronoi

Paris-Sud XI, Université de

62

Geodesic shape regression in the framework of currents  

E-Print Network [OSTI]

Geodesic shape regression in the framework of currents James Fishbaugh1 , Marcel Prastawa1 , Guido fully parameterize the geodesic shape evolution. This is in contrast to previous shape re- gression on the shape space and the corresponding re- gression function. In [5], a piecewise geodesic method has been

Prastawa, Marcel

63

Generic measures for geodesic flows on nonpositively curved manifolds  

E-Print Network [OSTI]

Generic measures for geodesic flows on nonpositively curved manifolds Yves Coud`ene, Barbara the generic invariant probability measures for the geodesic flow on connected complete nonpositively curved subset of the set of all probability measures invariant by the geodesic flow. The proof of K. Sigmund

Paris-Sud XI, Université de

64

Geodesic shape regression in the framework of currents  

E-Print Network [OSTI]

Geodesic shape regression in the framework of currents James Fishbaugh1 , Marcel Prastawa1 , Guido fully parameterize the geodesic shape evolution. This is in contrast to previous shape re- gression and the corresponding re- gression function. In [5], a piecewise geodesic method has been proposed, which extends

Gerig, Guido

65

Shapes of geodesic nets. Alexander Nabutovsky and Regina Rotman  

E-Print Network [OSTI]

Shapes of geodesic nets. Alexander Nabutovsky and Regina Rotman August 14, 2006 Abstract Let M n infinitely many geometrically distinct geodesic nets on this manifold. We will also show that either the length of a shortest pe­ riodic geodesic is bounded in terms of the volume of a manifold M n

Nabutovsky, Alexander

66

How to project `circular' manifolds using geodesic distances?  

E-Print Network [OSTI]

How to project `circular' manifolds using geodesic distances? John Aldo Lee, Michel Verleysen,verleysen}@dice.ucl.ac.be Abstract. Recent papers have clearly shown the advantage of using the geodesic distance instead strongly crumpled manifolds have to be un- folded. Nevertheless, neither the Euclidean nor the geodesic

Verleysen, Michel

67

LORENTZIAN GEODESIC FLOWS BETWEEN HYPERSURFACES IN EUCLIDEAN SPACES  

E-Print Network [OSTI]

LORENTZIAN GEODESIC FLOWS BETWEEN HYPERSURFACES IN EUCLIDEAN SPACES JAMES DAMON VERY PRELIMINARY induced by a "Geodesic Flow"in an associated space There are several approaches to this question. One and their boundaries. Then, if t, 1 t 1, is a geodesic in Diff(Rn ) beginning at the identity, then t() (or t

68

Degree of geodesic mobility of Lorentzian metric Aleksandra Fedorova  

E-Print Network [OSTI]

Degree of geodesic mobility of Lorentzian metric Aleksandra Fedorova FSU, Jena March 24, 2012 Aleksandra Fedorova ( FSU, Jena ) Degree of mobility March 24, 2012 1 / 22 #12;Outline 1 Degree of geodesic March 24, 2012 2 / 22 #12;Geodesically equivalent connections M -- manifold, and ¯ are affine

Rossak, Wilhelm R.

69

Kinetic theory of geodesic acoustic and related modes  

E-Print Network [OSTI]

Kinetic theory of geodesic acoustic and related modes A.I. Smolyakov Department of Physics · Geodesic Acoustic Modes (GAM) are relatively high frequency eigen-modes supported by plasma compressibility history of GAM and related modes ·1968 : Geodesic acoustic modes: Winsor, Johnson, Dawson ·2000-05: Surge

70

Sparse Geodesic Paths Mark A. Davenport and Richard G. Baraniuk  

E-Print Network [OSTI]

Sparse Geodesic Paths Mark A. Davenport and Richard G. Baraniuk Department of Electrical of the sparse geodesic path between two points, by which we mean the shortest path between the points geodesic path can be easily generated. The distance provides a natural similarity measure that can be ex

71

Geodesic Disks and Clustering in a Simple Magdalene G. Borgelt  

E-Print Network [OSTI]

Geodesic Disks and Clustering in a Simple Polygon Magdalene G. Borgelt Marc van Kreveld Jun Luo.cs.uu.nl ISSN: 0924-3275 #12;Geodesic Disks and Clustering in a Simple Polygon Magdalene G. Borgelt European points lying in the interior of P. A geodesic disk GD(p, r) with center p and radius r is the set

Utrecht, Universiteit

72

Geodesic Regression on Riemannian Manifolds P. Thomas Fletcher  

E-Print Network [OSTI]

Geodesic Regression on Riemannian Manifolds P. Thomas Fletcher School of Computing, University a manifold-valued random variable and a real-valued independent parameter. The principle is to fit a geodesic is evaluated as the sum-of-squared geodesic distances from the model to the data, and this provides

Boyer, Edmond

73

Pseudo-Riemannian Geodesic Foliations by Circles Pierre Mounoud  

E-Print Network [OSTI]

Pseudo-Riemannian Geodesic Foliations by Circles Pierre Mounoud Univ. Bordeaux, IMB, UMR 5251 F investigate under which assumptions an orientable pseudo-Riemannian geodesic foliations by circles Lorentzian sur- face all of whose spacelike/timelike geodesics are closed, is finitely covered by S1 Ã? R

Paris-Sud XI, Université de

74

GEODESIC FLOW, LEFT-HANDEDNESS, AND TEMPLATES PIERRE DEHORNOY  

E-Print Network [OSTI]

GEODESIC FLOW, LEFT-HANDEDNESS, AND TEMPLATES PIERRE DEHORNOY Abstract. We establish that, for every hyperbolic orbifolds of type (2, q, ) and for every orbifold of type (2, 3, 4g+2), the geodesic of periodic orbits (i) bounds a Birkhoff section for the geodesic flow, and (ii) is a fibered link

Boyer, Edmond

75

GEODESIC FRCHET DISTANCE WITH POLYGONAL OBSTACLES Atlas F. Cook IV  

E-Print Network [OSTI]

GEODESIC FR�CHET DISTANCE WITH POLYGONAL OBSTACLES Atlas F. Cook IV Carola Wenk Abstract We present the first algorithm to compute the geodesic Fréchet distance between two polygonal curves in a plane of from a point source). This shortest path map supports geodesic distance queries from any point s ab

Texas at San Antonio, University of

76

Heuristically Driven Front Propagation for Fast Geodesic Extraction  

E-Print Network [OSTI]

Heuristically Driven Front Propagation for Fast Geodesic Extraction Gabriel Peyr´e Laurent D. Cohen to quickly extract geodesic paths on images and 3D meshes. We use a heuristic to drive the front propagation that is similar to the A algorithm used in artificial intelli- gence. In order to find very quickly geodesic paths

Paris-Sud XI, Université de

77

INTEGRABILITY OF GEODESIC FLOWS AND ISOSPECTRALITY OF RIEMANNIAN MANIFOLDS  

E-Print Network [OSTI]

INTEGRABILITY OF GEODESIC FLOWS AND ISOSPECTRALITY OF RIEMANNIAN MANIFOLDS DOROTHEE SCHUETH are isospectral for the Laplace operator on functions and such that M has completely integrable geodesic flow of the submanifolds of the unit tangent bundle given by two maximal continuous families of closed geodesics

Schüth, Dorothee

78

Discrete geodesic regression in shape space Benjamin Berkels1  

E-Print Network [OSTI]

Discrete geodesic regression in shape space Benjamin Berkels1 , P. Thomas Fletcher2 , Behrend Benedikt.Wirth@cims.nyu.edu Abstract. A new approach for the effective computation of geodesic re- gression curves in shape spaces is presented. Here, one asks for a geodesic curve on the shape manifold

Rumpf, Martin

79

Applications (Grid Tools)  

E-Print Network [OSTI]

Grid Fabric Software Grid Applications Core Grid Middleware User-Level Middleware (Grid Tools) !"# $ %& ' ( ) * #& + '& ' , - . / # ) ) 0 # * 1 PDB CDB Grid Fabric Hardware &+ '' + ) , '1 '1 ' % - * # ( Grid Fabric Software Grid Applications Core Grid Middleware User-Level Middleware (Grid Tools) !"# $ %& ' ( ) * #& + '& ' , - . / # ) ) 0

Buyya, Rajkumar

80

A bi-Hamiltonian supersymmetric geodesic equation  

E-Print Network [OSTI]

A supersymmetric extension of the Hunter-Saxton equation is constructed. We present its bi-Hamiltonian structure and show that it arises geometrically as a geodesic equation on the space of superdiffeomorphisms of the circle that leave a point fixed endowed with a right-invariant metric.

Jonatan Lenells

2008-06-29T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

THE GEODESIC RAY TRANSFORM ON RIEMANNIAN SURFACES ...  

E-Print Network [OSTI]

the geodesic ?(y, ?, t) is never zero, we get that the (3n ? 2) × (2n ? 1) matrix J has maximal .... a graph of the canonical map C defined in (3.10). ..... We use the code developed in Matlab by the first author, whose detail may be found in [22].

2014-11-24T23:59:59.000Z

82

Generation of Geodesic Acoustic Modes in ITG turbulence  

SciTech Connect (OSTI)

The generation of geodesic acoustic modes (GAM) is studied by means of numerical simulations of a 3D fluid global model, describing flux-driven electrostatic ITG (Ion Temperature Gradient) turbulence in the core of tokamak plasmas. The model evolves the equilibrium and the perturbed fields as a whole. The coupling of poloidal harmonics induced by the curvature thus results in the presence of both turbulent and neoclassical transport effects in the system. The neoclassical thermal conductivity, which is linked to the time-independent component of the poloidal modulation of the equilibrium fields, is observed to be of the order of the turbulent one, in a system driven by strong injected heat fluxes. The frequency spectrum of the electrostatic potential fluctuations exhibits a peak near the theoretical GAM frequency. In the turbulent stationary state of the simulations a downshift of the GAM frequency is observed.

Falchetto, G. L.; Garbet, X.; Ottaviani, M. [Association EURATOM-CEA, CEA/DSM/DRFC, Centre de Cadarache, 13108 Saint Paul lez Durance (France); Smolyakov, A. [Department of Physics and Engineering Physics, University of Saskatchewan, SK (Canada)

2006-11-30T23:59:59.000Z

83

A non-geodesic motion in the R^-1 theory of gravity tuned with observations  

E-Print Network [OSTI]

In the general picture of high order theories of gravity, recently, the R^-1 theory has been analyzed in two different frameworks. In this letter a third context is added, considering an explicit coupling between the R^-1 function of the Ricci scalar and the matter Lagrangian. The result is a non-geodesic motion of test particles which, in principle, could be connected with Dark Matter and Pioneer anomaly problems.

Christian Corda

2008-01-11T23:59:59.000Z

84

On the Geodesic Nature of Wegner's Flow  

E-Print Network [OSTI]

Wegner's method of flow equations offers a useful tool for diagonalizing a given Hamiltonian and is widely used in various branches of quantum physics. Here, generalizing this method, a condition is derived, under which the corresponding flow of a quantum state becomes geodesic in a submanifold of the projective Hilbert space, independently of specific initial conditions. This implies the geometric optimality of the present method as an algorithm of generating stationary states. The result is illustrated by analyzing some physical examples.

Yuichi Itto; Sumiyoshi Abe

2012-02-08T23:59:59.000Z

85

Geodesic deviation at higher orders via covariant bitensors  

E-Print Network [OSTI]

We review a simple but instructive application of the formalism of covariant bitensors, to use a deviation vector field along a fiducial geodesic to describe a neighboring worldline, in an exact and manifestly covariant manner, via the exponential map. Requiring the neighboring worldline to be a geodesic leads to the usual linear geodesic deviation equation for the deviation vector, plus corrections at higher order in the deviation and relative velocity. We show how these corrections can be efficiently computed to arbitrary orders via covariant bitensor expansions, deriving a form of the geodesic deviation equation valid to all orders, and producing its explicit expanded form through fourth order. We also discuss the generalized Jacobi equation, action principles for the higher-order geodesic deviation equations, results useful for describing accelerated neighboring worldlines, and the formal general solution to the geodesic deviation equation through second order.

Justin Vines

2014-07-25T23:59:59.000Z

86

Geodesic Structure of the Noncommutative Schwarzschild Anti-de Sitter Black Hole I: Timelike Geodesics  

E-Print Network [OSTI]

By considering particles as smeared objects, we investigate the effects of space noncommutativity on the geodesic structure in Schwarzschild-AdS spacetime. By means of a detailed analysis of the corresponding effective potentials for particles, we find the possible motions which are allowed by the energy levels. Radial and non-radial trajectories are treated and the effects of space noncommutativity on the value of the precession of the perihelion are estimated. We show that the geodesic structure of this black hole presents new types of motion not allowed by the Schwarzschild spacetime.

Alexis Larranaga

2011-10-04T23:59:59.000Z

87

Symmetries of geodesic motion in Gödel-type spacetimes  

E-Print Network [OSTI]

In this paper, we study Noether gauge symmetries of geodesic motion for geodesic Lagrangian of four classes of metrics of G\\"{o}del-type spacetimes for which we calculated the Noether gauge symmetries for all classes I-IV, and find the first integrals of corresponding classes to derive a complete characterization of the geodesic motion. Using the obtained expressions for $\\dot{t}, \\dot{r}, \\dot{\\phi}$ and $\\dot{z}$ of each classes I-IV which depends essentially on two independent parameters $m$ and $w$, we explicitly integrated the geodesic equations of motion for the corresponding G\\"{o}del-type spacetimes.

U. Camci

2014-05-15T23:59:59.000Z

88

Geodesic Motion in the (Charged) Doubly Spinning Black Ring Spacetime  

E-Print Network [OSTI]

In this article we analyze the geodesics of test particles and light in the five dimensional (charged) doubly spinning black ring spacetime. Apparently it is not possible to separate the Hamilton-Jacobi-equation for (charged) doubly spinning black rings in general, so we concentrate on special cases: null geodesics in the ergosphere and geodesics on the two rotational axes of the (charged) doubly spinning black ring. We present analytical solutions to the geodesic equations for these special cases. Using effective potential techniques we study the motion of test particles and light and discuss the corresponding orbits.

Saskia Grunau; Valeria Kagramanova; Jutta Kunz

2012-12-03T23:59:59.000Z

89

Geodesic Distance in Planar Graphs: An Integrable Approach  

E-Print Network [OSTI]

We discuss the enumeration of planar graphs using bijections with suitably decorated trees, which allow for keeping track of the geodesic distances between faces of the graph. The corresponding generating functions obey non-linear recursion relations on the geodesic distance. These are solved by use of stationary multi-soliton tau-functions of suitable reductions of the KP hierarchy. We obtain a unified formulation of the (multi-) critical continuum limit describing large graphs with marked points at large geodesic distances, and obtain integrable differential equations for the corresponding scaling functions. This provides a continuum formulation of two-dimensional quantum gravity, in terms of the geodesic distance.

P. Di Francesco

2005-06-27T23:59:59.000Z

90

14.11. GEODESIC LINES, LOCAL GAUSS-BONNET THEOREM 779 14.11 Geodesic Lines, Local Gauss-Bonnet Theorem  

E-Print Network [OSTI]

14.11. GEODESIC LINES, LOCAL GAUSS-BONNET THEOREM 779 14.11 Geodesic Lines, Local Gauss-Bonnet Theorem Geodesics play a very important role in surface theory and in dynamics. One of the main reasons why geodesics are so important is that they generalize to curved surfaces the notion of \\shortest path

Gallier, Jean

91

Tubular Enhanced Geodesic Active Contours for Continuum Robot Detection using 3D Ultrasound  

E-Print Network [OSTI]

Tubular Enhanced Geodesic Active Contours for Continuum Robot Detection using 3D Ultrasound continuum robots in 3D ultrasound images. The proposed approach combines geodesic active contours Enhanced Geodesic Active Contours (TEGAC), is demonstrated through ex vivo intracardiac experiments

Dupont, Pierre

92

Anti-telephones in transformation optics: metamaterials with closed null geodesics  

E-Print Network [OSTI]

We apply the methods of transformation optics to theoretical descriptions of spacetimes that support closed null geodesic curves. The metric used is based on frame dragging spacetimes, such as the van Stockum dust or the Kerr black hole. Through transformation optics, this metric is analogous to a material that in theory should allow for communication between past and future. Presented herein is a derivation and description of the spacetime and the resulting permeability, permittivity, and magneto-electric couplings that a material would need in order for light in the material to follow closed null geodesics. We also address the paradoxical implications of such a material, and demonstrate why such a material would not actually result in a violation of causality. A full derivation of the Plebanski equations is also included.

Boston, S Reece

2015-01-01T23:59:59.000Z

93

Grid Integration  

SciTech Connect (OSTI)

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

Not Available

2008-09-01T23:59:59.000Z

94

Dark energy and extending the geodesic equations of motion: its construction and experimental constraints  

E-Print Network [OSTI]

3 RESEARCH ARTICLE Dark energy and extending the geodesicWith the discovery of Dark Energy, DE , there is now aextension is set. Keywords Dark energy · Geodesic equations

Speliotopoulos, Achilles D.

2010-01-01T23:59:59.000Z

95

Spin-geodesic deviations in the Schwarzschild spacetime  

E-Print Network [OSTI]

The deviation of the path of a spinning particle from a circular geodesic in the Schwarzschild spacetime is studied by an extension of the idea of geodesic deviation. Within the Mathisson-Papapetrou-Dixon model and assuming the spin parameter to be sufficiently small so that it makes sense to linearize the equations of motion in the spin variables as well as in the geodesic deviation, the spin-curvature force adds an additional driving term to the second order system of linear ordinary differential equations satisfied by nearby geodesics. Choosing initial conditions for geodesic motion leads to solutions for which the deviations are entirely due to the spin-curvature force, and one finds that the spinning particle position for a given fixed total spin oscillates roughly within an ellipse in the plane perpendicular to the motion, while the azimuthal motion undergoes similar oscillations plus an additional secular drift which varies with spin orientation.

Donato Bini; Andrea Geralico; Robert T. Jantzen

2014-08-21T23:59:59.000Z

96

Geodesic structure of Janis-Newman-Winicour space-time  

E-Print Network [OSTI]

In the present paper we study the geodesic structure of the Janis-Newman-Winicour(JNW) space-time which contains a strong curvature naked singularity. This metric is an extension of the Schwarzschild geometry when a massless scalar field is included. We find that the strength parameter $\\mu$ of the scalar field effects on the geodesic structure of the JNW space-time. By solving the geodesic equation and analyzing the behavior of effective potential, we investigate all geodesic types of the test particle and the photon in the JNW space-time. At the same time we simulate all the geodesic orbits corresponding to the energy levels of the effective potential in the JNW space-time.

Sheng Zhou; Ruanjing Zhang; Juhua Chen; Yongjiu Wang

2014-08-26T23:59:59.000Z

97

Grid Security  

E-Print Network [OSTI]

Sinnott,R.O. National Centre for e-Social Science book, Grid Computing: Technology, Service and Application, CRC Press, November 2008.

Sinnott, R.O.

98

Geodesic Completeness for Sobolev Metrics on the Space of Immersed Plane Curves  

E-Print Network [OSTI]

Geodesic Completeness for Sobolev Metrics on the Space of Immersed Plane Curves Martins Bruveris on the space of immersed plane curves. We show that the geodesic equation for Sobolev-type met- rics is geodesically com- plete. We find lower bounds for the geodesic distance in terms of curvature and its

Michor, Peter W.

99

The Complexity of Geodesic Voronoi Diagrams on Triangulated 2-Manifold Surfaces  

E-Print Network [OSTI]

The Complexity of Geodesic Voronoi Diagrams on Triangulated 2-Manifold Surfaces Yong-Jin Liu1 , Kai 2-manifold surface, based on the geodesic metric. Given a triangulated 2-manifold T of n faces T, the Voronoi diagram of a set of point sites based on the geodesic metric (called below geodesic

Tang, Kai

100

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC FLOW.  

E-Print Network [OSTI]

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC FLOW. KEITH BURNS, that is within " of the round metric and has a geodesic for which the corresponding orbit of the geodesic ow on S n ; n #21; 3, that is within " of the round metric and has a geodesic for which the complement

Burns, Keith

Note: This page contains sample records for the topic "geodesic grid coupled" 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

COMPARISON OF FRACTIONAL AND GEODESIC ANISOTROPY IN DIFFUSION TENSOR IMAGES OF 90 MONOZYGOTIC AND DIZYGOTIC TWINS  

E-Print Network [OSTI]

COMPARISON OF FRACTIONAL AND GEODESIC ANISOTROPY IN DIFFUSION TENSOR IMAGES OF 90 MONOZYGOTIC anisotropy (FA), and geodesic anisotropy (GA), which measures the geodesic distance between tensors be used to map disease effects on white matter. A related scalar measure, the Geodesic Anisotropy (GA) [3

Thompson, Paul

102

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC FLOW.  

E-Print Network [OSTI]

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC FLOW. KEITH BURNS, that is within '' of the round metric and has a geodesic for which the corresponding orbit of the geodesic flow on S n ; n â?? 3, that is within '' of the round metric and has a geodesic for which the complement

103

Geodesic Paths on Triangular Meshes DIMAS MARTINEZ, LUIZ VELHO, PAULO CEZAR CARVALHO  

E-Print Network [OSTI]

Geodesic Paths on Triangular Meshes DIMAS MART´INEZ, LUIZ VELHO, PAULO CEZAR CARVALHO IMPA dimasmm,lvelho,pcezar @visgraf.impa.br Abstract. We present a new algorithm to compute a geodesic path Geodesics theory, we are able to generate an iterative process to obtain a good discrete geodesic

104

ccsd-00003224,version1-4Nov2004 Clifton-Pohl torus and geodesic completeness  

E-Print Network [OSTI]

ccsd-00003224,version1-4Nov2004 Clifton-Pohl torus and geodesic completeness by a 'complex' point generalization of the idea of completeness guarantee geodesic completeness of Clifton- Pohl torus; we explicitely compute all of its geodesics. Keywords: Clifton-Pohl torus, geodesic completeness, holomorphic metric

Paris-Sud XI, Université de

105

2D and 3D Visibility in Discrete Geometry: an application to discrete geodesic paths  

E-Print Network [OSTI]

1 2D and 3D Visibility in Discrete Geometry: an application to discrete geodesic paths D discrete geodesic paths in discrete domain with obstacles. This allows us to introduce a new geodesic metric in discrete geometry. Keywords: discrete visibility, geodesic path, distance transform, discrete

Boyer, Edmond

106

Geodesic Motion on Closed Spaces: Two Numerical Examples  

E-Print Network [OSTI]

The geodesic structure is very closely related to the trace of the Laplace operator, involved in the calculation of the expectation value of the energy momentum tensor in Universes with non trivial topology. The purpose of this work is to provide concrete numerical examples of geodesic flows. Two manifolds with genus $g=0$ are given. In one the chaotic regions, form sets of negligible or zero measure. In the second example the geodesic flow, shows the presence of measurable chaotic regions. The approach is "experimental", numerical, and there is no attempt to an analytical calculation.

Daniel Muller

2012-01-30T23:59:59.000Z

107

Geodesic Distance in Fisher Information Space and Holographic Entropy Formula  

E-Print Network [OSTI]

In this short note, we examine geodesic distance in Fisher information space in which the metric is defined by the entanglement entropy in CFT_(1+1). It is obvious in this case that the geodesic distance at a constant time is a function of the entropy data embedded into the information space. In a special case, the geodesic equation can be solved analytically, and we find that the distance agrees well with the Ryu-Takayanagi formula. Then, we can understand how the distance looks at the embeded quantum information. The result suggests that the Fisher metric is an efficient tool for constructing the holographic spacetime.

Hiroaki Matsueda

2014-08-28T23:59:59.000Z

108

Geodesic Structure of the Schwarzschild Black Hole in Rainbow Gravity  

E-Print Network [OSTI]

In this paper we study the geodesic structure of the Schwarzschild black hole in rainbow gravity analyzing the behavior of null and time-like geodesic. We find that the structure of the geodesics essentially does not change when the semi-classical effects are included. However, we can distinguish different scenarios if we take into account the effects of rainbow gravity. Depending on the type of rainbow functions under consideration, inertial and external observers see very different situations in radial and non radial motion of a test particles.

Carlos Leiva; Joel Saavedra; Jose Villanueva

2008-12-09T23:59:59.000Z

109

On MOND, extended gravity and non-geodesic motion  

E-Print Network [OSTI]

Starting from the origin of Einstein general relativity (GR) the request of Mach on the theory's structure has been the core of the foundational debate. That problem is strictly connected with the nature of the mass-energy equivalence. It is well known that this is exactly the key point that Einstein used to realize a metric theory of gravitation having an unequalled beauty and elegance. On the other hand, the current requirements of particle physics and the open questions within extended gravity theories request a better understanding of Equivalence Principle (EP). The MOND theory by Milgrom proposes a modify of Newtonian dynamics and a variation of the ratio m_{i}/m_{g}, to be tested, at least, within the solar system. In this paper we attack this important issue from the general point of view of a weak modification of GR which considers a direct coupling between the Ricci curvature scalar and the matter Lagrangian. It is shown that a non geodesic ratio m_{i}/m_{g} can be fixed and that Milgrom acceleration is retrieved at low energies.

Elmo Benedetto; Ignazio Licata; Christian Corda

2014-11-04T23:59:59.000Z

110

Smart Grid Investments Improve Grid Reliability, Resilience,...  

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

Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November...

111

Spin-geodesic deviations in the Kerr spacetime  

E-Print Network [OSTI]

The dynamics of extended spinning bodies in the Kerr spacetime is investigated in the pole-dipole particle approximation and under the assumption that the spin-curvature force only slightly deviates the particle from a geodesic path. The spin parameter is thus assumed to be very small and the back reaction on the spacetime geometry neglected. This approach naturally leads to solve the Mathisson-Papapetrou-Dixon equations linearized in the spin variables as well as in the deviation vector, with the same initial conditions as for geodesic motion. General deviations from generic geodesic motion are studied, generalizing previous results limited to the very special case of an equatorial circular geodesic as the reference path.

Donato Bini; Andrea Geralico

2014-08-21T23:59:59.000Z

112

Geodesic multiplication as a tool for classical and quantum gravity  

E-Print Network [OSTI]

Algebraic systems called the local geodesic loops and their tangent Akivis algebras are considered. Their possible role in theory of gravity is considered. Quantum conditions for the infinitesimal quantum events are proposed.

Piret Kuusk; Eugen Paal

2008-03-08T23:59:59.000Z

113

FUTURE POWER GRID INITIATIVE Future Power Grid  

E-Print Network [OSTI]

FUTURE POWER GRID INITIATIVE Future Power Grid Control Paradigm OBJECTIVE This project integration & exploit the potential of distributed smart grid assets » Significantly reduce the risk of advanced mathematical models, next- generation simulation and analytics capabilities for the power grid

114

Parametric Excitation of Geodesic Acoustic Modes by Electron Drift Waves and Ion Temperature Gradient Modes in Tokamak Plasmas  

SciTech Connect (OSTI)

Geodesic Acoustic Modes (GAMs) have been predicted and subsequently observed in many toroidal plasma devices. Bicoherence studies on various devices have suggested three-wave mode coupling processes between GAMs and high frequency turbulence. Thus the parametric coupling of GAMS to drift waves and/or ion temperature gradient(ITG{r_brace} modes is a potential candidate for excitation of these modes. In this paper we discuss the resonant three-wave coupling mechanism for the excitation of GAMs by ITG and finite beta drift waves in homogeneous and inhomogeneous plasmas and compare theoretical predictions with observed characteristics of the GAMs.

Guzdar, P. N.; Kleva, R. G. [IREAP, University of Maryland, College Park, MD 20742 (United States); Chakrabarti, N. [SINP, Kolkata (India); Kaw, P. K.; Singh, R. [IPR, Gandhinagar, 308423 (India); Naulin, V.; Rasmussen, J. J. [EURATOM, Roskilde (Denmark)

2008-11-01T23:59:59.000Z

115

Geodesic Congruences in the Palatini f(R) Theory  

E-Print Network [OSTI]

We shall investigate the properties of a congruence of geodesics in the framework of Palatini f(R) theories. We shall evaluate the modified geodesic deviation equation and the Raychaudhuri's equation and show that f(R) Palatini theories do not necessarily lead to attractive forces. Also we shall study energy condition for f(R) Palatini gravity via a perturbative analysis of the Raychaudhuri's equation.

Fatimah Shojai; Ali Shojai

2008-11-18T23:59:59.000Z

116

Kinematics of geodesic flows in stringy black hole backgrounds  

E-Print Network [OSTI]

We study the kinematics of timelike geodesic congruences in two and four dimensions in spacetime geometries representing stringy black holes. The Raychaudhuri equations for the kinematical quantities (namely, expansion, shear and rotation) characterising such geodesic flows are written down and subsequently solved analytically (in two dimensions) and numerically (in four dimensions) for specific geodesics flows. We compare between geodesic flows in dual (electric and magnetic) stringy black hole backgrounds in four dimensions, by showing the differences that arise in the corresponding evolutions of the kinematic variables. The crucial role of initial conditions and the spacetime curvature on the evolution of the kinematical variables is illustrated. Some novel general conclusions on geodesic focusing are obtained from the analytical and numerical findings. We also propose new quantifiers in terms of (a) the time (affine parameter) of approach to a singularity and (b) the location of extrema in the functional evolution of the kinematic variables, which may be used to distinguish between flows in different geometries. In summary, our quantitative findings bring out hitherto unknown features of the kinematics of geodesic flows, which, otherwise, would have remained overlooked, if we confined ourselves to only a qualitative analysis.

Anirvan Dasgupta; Hemwati Nandan; Sayan Kar

2009-06-12T23:59:59.000Z

117

Null geodesics and shadow of a rotating black hole in extended Chern-Simons modified gravity  

SciTech Connect (OSTI)

The Chern-Simons modification to general relativity in four dimensions consists of adding to the Einstein-Hilbert term a scalar field that couples to the first-class Pontryagin density. In this theory, which has attracted considerable attention recently, the Schwarzschild metric persists as an exact solution, and this is why this model resists several observational constraints. In contrast, the spinning black hole solution of the theory is not given by the Kerr metric but by a modification of it, so far only known for slow rotation and small coupling constant. In the present paper, we show that, in this approximation, the null geodesic equation can be integrated, and this allows us to investigate the shadow cast by a black hole. We discuss how, in addition to the angular momentum of the solution, the coupling to the Chern-Simons term deforms the shape of the shadow.

Amarilla, Leonardo [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque, 1900, La Plata (Argentina); Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon 1, 1428, Buenos Aires (Argentina); Eiroa, Ernesto F. [Instituto de Astronomia y Fisica del Espacio, C.C. 67 Suc. 28, 1428, Buenos Aires (Argentina); Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon 1, 1428, Buenos Aires (Argentina); Giribet, Gaston [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon 1, 1428, Buenos Aires (Argentina)

2010-06-15T23:59:59.000Z

118

Plasma Shape Effects on Geodesic Acoustic Oscillations  

SciTech Connect (OSTI)

Geodesic acoustic mode (GAM) oscillations in tokamak plasmas are known to be sensitive to the value of the safety factor q. Through its linear and nonlinear interactions with ITG turbulence it has recently been shown in direct numerical global simulations that the turbulence driven heat transport is larger when GAM oscilations of large amplitude are present, resulting in an anomalous transport scaling with the inverse plasma current. GAM dispersion relations have been derived for circular, large aspect ratio configurations, and, recently, for helical configurations. Linear simulation results are presented using the global, PIC, finite element codes GYGLES and ORB5 for the GAM frequency, damping rate and Rosenbluth-Hinton residual zonal flow for a scan in plasma elongation. It is found that CAM frequency slightly decreases, while GAM damping rate and residual zonal flows increase with elongation. Nonlinear ITG simulations using the ORB5 code show that elongation reduces heat transport and that this is related to the plasma current and not q alone.

Villard, L.; Angelino, P.; Jolliet, S.; McMillan, B. F.; Sauter, O.; Tran, T. M. [Centre de Recherches en Physique des Plasmas, Association Euratom -- Confederation Suisse, EPFL, 1015 Lausanne (Switzerland); Bottino, A. [Max-Planck Gesellschaft Institute for Plasma Physics, D-85748 Garching (Germany); Hatzky, R. [Computer Center of the IPP, D-85748 Garching (Germany); Max-Planck Gesellschaft, D-85748 Garching (Germany)

2006-11-30T23:59:59.000Z

119

FUTURE POWER GRID INITIATIVE GridPACK: Grid Parallel Advanced  

E-Print Network [OSTI]

FUTURE POWER GRID INITIATIVE GridPACK: Grid Parallel Advanced Computational Kernels OBJECTIVE The U of the power grid will also have to evolve to insure accurate and timely simulations. On the other hand, the software tools available for power grid simulation today are primarily sequential single core programs

120

Non-parametric geodesic active regions: Method and evaluation for cerebral aneurysms segmentation in 3DRA and CTA  

E-Print Network [OSTI]

Non-parametric geodesic active regions: Method and evaluation for cerebral aneurysms segmentation compares to other alternative techniques based on deformable models, namely parametric geodesic active aneurysm; Geodesic active regions; Differential invariants; Non-parametric probability estimation; Model

Frangi, Alejandro

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121

Focusing of geodesic congruences in an accelerated expanding Universe  

E-Print Network [OSTI]

We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics. In particular, we focus on the space-time geometry contribution to this equation. By straightforward calculation from the metric of a Robertson-Walker cosmological model, it follows that in an accelerated expanding Universe the space-time contribution to the Raychaudhuri equation is positive for the fundamental congruence, favoring a non-focusing of the congruence of geodesics. However, the accelerated expansion of the present Universe does not imply a tendency of the fundamental congruence to diverge. It is shown that this is in fact the case for certain congruences of timelike geodesics without vorticity. Therefore, the focusing of geodesics remains feasible in an accelerated expanding Universe. Furthermore, a negative contribution to the Raychaudhuri equation from space-time geometry which is usually interpreted as the manifestation of the attractive character of gravity is restored in an accelerated expanding Robertson-Walker space-time at high speeds.

F. D. Albareti; J. A. R. Cembranos; A. de la Cruz-Dombriz

2013-01-08T23:59:59.000Z

122

Focusing of geodesic congruences in an accelerated expanding Universe  

SciTech Connect (OSTI)

We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics. In particular, we focus on the space-time geometry contribution to this equation. By straightforward calculation from the metric of a Robertson-Walker cosmological model, it follows that in an accelerated expanding Universe the space-time contribution to the Raychaudhuri equation is positive for the fundamental congruence, favoring a non-focusing of the congruence of geodesics. However, the accelerated expansion of the present Universe does not imply a tendency of the fundamental congruence to diverge. It is shown that this is in fact the case for certain congruences of timelike geodesics without vorticity. Therefore, the focusing of geodesics remains feasible in an accelerated expanding Universe. Furthermore, a negative contribution to the Raychaudhuri equation from space-time geometry which is usually interpreted as the manifestation of the attractive character of gravity is restored in an accelerated expanding Robertson-Walker space-time at high speeds.

Albareti, F.D.; Cembranos, J.A.R. [Departamento de Física Teórica I, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid (Spain); Cruz-Dombriz, A. de la, E-mail: fdalbareti@estumail.ucm.es, E-mail: cembra@fis.ucm.es, E-mail: alvaro.delacruz-dombriz@uct.ac.za [Astrophysics, Cosmology and Gravity Centre (ACGC), University of Cape Town, 7701 Rondebosch, Cape Town (South Africa)

2012-12-01T23:59:59.000Z

123

NATL Grid Map 50-Meter Grid  

E-Print Network [OSTI]

NATL-east NATL Grid Map 50-Meter Grid Locations in NATL can be specified by reference to a grid intervals. Each gridline intersection ("grid point") is identified by its two gridlines (e.g., E5). Each 50x50-m block formed by the gridlines is identified by the grid point in its northwest corner (e

Slatton, Clint

124

The geodesic rule for higher codimensional global defects  

E-Print Network [OSTI]

We generalize the geodesic rule to the case of formation of higher codimensional global defects. Relying on energetic arguments, we argue that, for such defects, the geometric structures of interest are the totally geodesic submanifolds. On the other hand, stochastic arguments lead to a diffusion equation approach, from which the geodesic rule is deduced. It turns out that the most appropriate geometric structure that one should consider is the convex hull of the values of the order parameter on the causal volumes whose collision gives rise to the defect. We explain why these two approaches lead to similar results when calculating the density of global defects by using a theorem of Cheeger and Gromoll. We present a computation of the probability of formation of strings/vortices in the case of a system, such as nematic liquid crystals, whose vacuum is $\\mathbb{R}P^2$.

Anthony J. Creaco; Nikos Kalogeropoulos

2008-05-15T23:59:59.000Z

125

de Sitter geodesics: reappraising the notion of motion  

E-Print Network [OSTI]

The de Sitter spacetime is transitive under a combination of translations and proper conformal transformations. Its usual family of geodesics, however, does not take into account this property. As a consequence, there are points in de Sitter spacetime which cannot be joined to each other by any one of these geodesics. By taking into account the appropriate transitivity properties in the variational principle, a new family of maximizing trajectories is obtained, whose members are able to connect any two points of the de Sitter spacetime. These geodesics introduce a new notion of motion, given by a combination of translations and proper conformal transformations, which may possibly become important at very-high energies, where conformal symmetry plays a significant role.

J. G. Pereira; A. C. Sampson

2012-03-01T23:59:59.000Z

126

Geodesic Nucleation and Evolution of a de Sitter Brane  

E-Print Network [OSTI]

Within the framework of Geodesic Brane Gravity, the deviation from General Relativity is parameterized by the conserved bulk energy. The corresponding geodesic evolution/nucleation of a de-Sitter brane is shown to be exclusively driven by a double-well Higgs potential, rather than by a plain cosmological constant. The (hairy) horizon serves then as the locus of unbroken $Z_{2}$ symmetry. The quartic structure of the scalar potential, singled out on finiteness grounds of the total (including the dark component) energy density, chooses the Hartle-Hawking no-boundary proposal.

Aharon Davidson; David Karasik; Yoav Lederer

2005-09-30T23:59:59.000Z

127

Influence of quantum matter fluctuations on geodesic deviation  

E-Print Network [OSTI]

We study the passive influence of quantum matter fluctuations on the expansion parameter of a congruence of timelike geodesics in a semiclassical regime. In particular, we show that, the perturbations of this parameter can be considered to be elements of the algebra of matter fields at all perturbative order. Hence, once a quantum state for matter is chosen, it is possible to explicitly evaluate the behavior of geometric fluctuations. After introducing the formalism necessary to treat similar problems, in the last part of the paper, we estimate the approximated probability of having a geodesic collapse in a flat spacetime due to those fluctuations.

Nicolò Drago; Nicola Pinamonti

2014-09-12T23:59:59.000Z

128

ccsd-00102606,version1-2Oct2006 Integrable geodesic flows and  

E-Print Network [OSTI]

ccsd-00102606,version1-2Oct2006 Integrable geodesic flows and Multi-Centre versus Bianchi A metrics that most, but not all, of the four dimensional metrics in the Multi- Centre family with integrable geodesic diagonal bi-axial Bianchi II metric has an integrable geodesic flow, and that the simplest hyperk

Paris-Sud XI, Université de

129

ccsd-00003326,version2-9Dec2005 On geodesic envelopes  

E-Print Network [OSTI]

ccsd-00003326,version2-9Dec2005 On geodesic envelopes Gianmarco Capitanio December 9, 2005 Abstract We give a global description of envelopes of geodesic tangents of regular curves in (not necessarily inflectional geodesics and its tangential caustics (formed by the conjugate points to those of the initial

130

Parametric representation of a surface pencil with a common spatial geodesic  

E-Print Network [OSTI]

Parametric representation of a surface pencil with a common spatial geodesic Guo-Jin Wanga , Kai a given spatial geodesic curve. We derive a parametric representation for a surface pencil whose members share the same geodesic curve as an isoparametric curve. By utilizing the Frenet trihedron frame along

Tai, Chiew-Lan

131

TIME DISCRETE GEODESIC PATHS IN THE SPACE OF IMAGES B. BERKELS, A. EFFLAND, M. RUMPF  

E-Print Network [OSTI]

TIME DISCRETE GEODESIC PATHS IN THE SPACE OF IMAGES B. BERKELS, A. EFFLAND, M. RUMPF Abstract and intensity variation. A robust and effective variational time discretization of geodesics paths is proposed requirements for the input images, the existence of discrete geodesic paths defined as minimizers

Rumpf, Martin

132

Geodesic Remeshing Using Front Propagation Gabriel Peyre (peyre@cmapx.polytechnique.fr)  

E-Print Network [OSTI]

Geodesic Remeshing Using Front Propagation Gabriel Peyr´e (peyre@cmapx.polytechnique.fr) CMAP modeling and processing that uses only fast geodesic computations. The basic building block, an intrinsic algo- rithm for computing geodesic centroidal tessellations, and a fast and robust method

Paris-Sud XI, Université de

133

Accurate Computation of Geodesic Distance Fields for Polygonal Curves on Triangle Meshes  

E-Print Network [OSTI]

Accurate Computation of Geodesic Distance Fields for Polygonal Curves on Triangle Meshes David,kobbelt}@cs.rwth-aachen.de Abstract We present an algorithm for the efficient and accu- rate computation of geodesic distance fields the original algorithm is able to compute geodesic distances to isolated points on the mesh only, our

Frey, Pascal

134

A GEOMETRIC CONTROL PROOF OF LINEAR FRANKS' LEMMA FOR GEODESIC FLOWS  

E-Print Network [OSTI]

A GEOMETRIC CONTROL PROOF OF LINEAR FRANKS' LEMMA FOR GEODESIC FLOWS A. LAZRAG Abstract. We provide an elementary proof of the Franks lemma for geodesic flows that uses basic tools of geometric control theory. 1 such as geodesic flows (see [3] and [2]) and more generally Hamiltonians flows (see [15]). In this work, we focus

Boyer, Edmond

135

Intense Geodesic Acousticlike Modes Driven by Suprathermal Ions in a Tokamak Plasma R. Nazikian,1  

E-Print Network [OSTI]

Intense Geodesic Acousticlike Modes Driven by Suprathermal Ions in a Tokamak Plasma R. Nazikian,1 G for the energetic-particle-driven geodesic acoustic mode. DOI: 10.1103/PhysRevLett.101.185001 PACS numbers: 52.35.Bj of strong beam ion redistribution and/or loss. The mode fre- quency is $50% below the ideal geodesic

136

GEODESIC HAMSANDWICH CUTS # Prosenjit Bose + Erik D. Demaine # Ferran Hurtado John Iacono Stefan Langerman #  

E-Print Network [OSTI]

GEODESIC HAM­SANDWICH CUTS # Prosenjit Bose + Erik D. Demaine # Ferran Hurtado § John Iacono­sandwich geodesic is a shortest path in P between two points on the boundary of P that simultaneously bisects­sandwich geodesic. We also show that this algorithm is optimal in the algebraic computation tree model when

Morin, Pat

137

Multi-touchless: Real-Time Fingertip Detection and Tracking Using Geodesic Maxima  

E-Print Network [OSTI]

Multi-touchless: Real-Time Fingertip Detection and Tracking Using Geodesic Maxima Philip Krejov the geodesic maxima of the surface. Fingertips are then selected from these maxima using a simplified model that uses geodesic maxima instead of visual appearance which is both efficient to compute and robust to both

Bowden, Richard

138

A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths  

E-Print Network [OSTI]

A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic extraction. Following this preprocessing, channels are defined as curves of minimal effort, or geodesics and geodesic paths, J. Geophys. Res., 115, F01002, doi:10.1029/2009JF001254. 1. Introduction [2] The detection

Foufoula-Georgiou, Efi

139

A Survey of Geodesic Paths on 3D Surfaces$ Prosenjit Bosea  

E-Print Network [OSTI]

A Survey of Geodesic Paths on 3D Surfaces$ Prosenjit Bosea , Anil Maheshwaria , Chang Shub of theoretically and practically relevant algorithms to compute geodesic paths and distances on three on S is called a geodesic path on the surface and the shortest distance between two points on S is called

Wuhrer, Stefanie

140

GEODESIC COMPLETENESS FOR SOBOLEV Hs-METRICS ON THE DIFFEOMORPHISM GROUP OF THE CIRCLE  

E-Print Network [OSTI]

GEODESIC COMPLETENESS FOR SOBOLEV Hs-METRICS ON THE DIFFEOMORPHISM GROUP OF THE CIRCLE JOACHIM Sobolev norm Hs on the diffeomorphism group of the circle is geodesically complete, provided that s > 3 on the corre- sponding Lie algebra C(S1). The well-posedness of the geodesics flow for the right

Paris-Sud XI, Université de

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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.
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to obtain the most current and comprehensive results.


141

SHORT GEODESIC SEGMENTS BETWEEN TWO POINTS ON A CLOSED RIEMANNIAN MANIFOLD  

E-Print Network [OSTI]

SHORT GEODESIC SEGMENTS BETWEEN TWO POINTS ON A CLOSED RIEMANNIAN MANIFOLD Alexander Nabutovsky there exist at least k distinct geodesics of length at most 20k!d between these points for every positive that for any pair of points on a closed Riemannian man- ifold Mn there exist infinitely many geodesics

Nabutovsky, Alexander

142

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 10, NO. 10, OCTOBER 2001 1467 Fast Geodesic Active Contours  

E-Print Network [OSTI]

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 10, NO. 10, OCTOBER 2001 1467 Fast Geodesic Active stable numerical scheme to implement a fast version of the geodesic active contour model. The proposed method for tracking in color movies. Index Terms--Additive operator splitting, color, geodesic active

Rivlin, Ehud

143

A geodesic voting shape prior to constrain the level set evolution for the segmentation of tubular  

E-Print Network [OSTI]

A geodesic voting shape prior to constrain the level set evolution for the segmentation of tubular a geodesic voting method to segment tree struc- tures, such as retinal or cardiac blood vessels. Many authors have used minimal cost paths, or similarly geodesics relative to a weight potential P, to find a vessel

Cohen, Laurent

144

Kinetic Theories of Geodesic Acoustic Modes: Radial Structure, Linear Excitation by Energetic Particles and Nonlinear Saturation  

E-Print Network [OSTI]

Kinetic Theories of Geodesic Acoustic Modes: Radial Structure, Linear Excitation by Energetic, Vol.13, No.3, Jun 2011 Kinetic Theories of Geodesic Acoustic Modes: Radial Structure, Linear, Univ. of California, Irvine CA 92697-4575, USA Abstract Geodesic acoustic modes (GAMs) are oscillating

Zonca, Fulvio

145

Geodesic Active Regions Using Non-parametric Statistical Regional Description and Their  

E-Print Network [OSTI]

Geodesic Active Regions Using Non-parametric Statistical Regional Description and Their Application {mhg,afrangi}@unizar.es Abstract. The inclusion of statistical region-based information in the Geodesic for the segmentation of brain aneurysms in CTA data with the Geodesic Active Regions model. 1 Introduction Brain

Frangi, Alejandro

146

Geodesic diameter of sets defined by few quadratic equations and inequalities  

E-Print Network [OSTI]

Geodesic diameter of sets defined by few quadratic equations and inequalities Michel Coste and Seydou Moussa September 2, 2010 Abstract We prove a bound for the geodesic diameter of a subset borrowed from D'Acunto and Kurdyka (to deal with the geodesic diameter) and from Barvinok (to take

Paris-Sud XI, Université de

147

DISCRETE GEODESIC CALCULUS IN THE SPACE OF VISCOUS FLUIDIC MARTIN RUMPF AND BENEDIKT WIRTH  

E-Print Network [OSTI]

DISCRETE GEODESIC CALCULUS IN THE SPACE OF VISCOUS FLUIDIC OBJECTS MARTIN RUMPF AND BENEDIKT WIRTH cheap dissimilarity measure, a time discrete geodesic calculus is developed, and applications to shape in shape space. The notion of discrete geodesics defined as energy minimizing paths gives rise

Rumpf, Martin

148

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC FLOW.  

E-Print Network [OSTI]

SPHERES WITH POSITIVE CURVATURE AND NEARLY DENSE ORBITS FOR THE GEODESIC, that is within " of the round metric and has a geodesic for whi* *ch the corresponding orbit of the geodesic flow is "-dense in the unit tangent bundle. Moreover* *, for any " > 0, we construct

Burns, Keith

149

Fast Geodesic Active Contours Roman Goldenberg, Ron Kimmel, Ehud Rivlin, Michael Rudzsky  

E-Print Network [OSTI]

1 Fast Geodesic Active Contours Roman Goldenberg, Ron Kimmel, Ehud Rivlin, Michael Rudzsky Abstract--- We use an unconditionally stable numerical scheme to implement a fast version of the geodesic active by a dynamic model known as the `geodesic active contour' introduced in [4], [5], [6], [7], see also [19], [30

Kimmel, Ron

150

From a closed piecewise geodesic to a constriction on a closed triangulated Franck Hetroy, Dominique Attali  

E-Print Network [OSTI]

From a closed piecewise geodesic to a constriction on a closed triangulated surface Franck H. In particular, con- strictions are periodic geodesics. We use constrictions in order to segment objects. In [4], we proposed an ap- proach based on progressive surface simplification and local geodesic computation

Paris-Sud XI, Université de

151

A GEODESIC VOTING METHOD FOR THE SEGMENTATION OF TUBULAR TREE AND CENTERLINES  

E-Print Network [OSTI]

A GEODESIC VOTING METHOD FOR THE SEGMENTATION OF TUBULAR TREE AND CENTERLINES Youssef Rouchdy1´el´ecom ParisTech, CNRS LTCI, 75013 Paris, France ABSTRACT This paper presents a geodesic voting method paths, or similarly geodesics relative to a weight potential P, to find a vessel between two end points

Cohen, Laurent

152

Kinetic theory of Geodesic Acoustic Modes: radial structures and nonlinear excitations  

E-Print Network [OSTI]

1 TH/P3-7 Kinetic theory of Geodesic Acoustic Modes: radial structures and nonlinear excitations F author: zonca@frascati.enea.it Abstract. Geodesic Acoustic Modes (GAM) are shown to constitute, we show that Geodesic Acoustic Modes (GAM) [1] constitute a continuous spec- trum due to radial

Zonca, Fulvio

153

Geodesic equivalence via integrability Peter Topalov y and Vladimir S. Matveev z  

E-Print Network [OSTI]

Geodesic equivalence via integrability Peter Topalov #3;y and Vladimir S. Matveev z Keywords: Geodesically Equivalent Metrics, Projectively Equivalent Metrics, Integrable Systems, Levi-Civita Coordinates an orbital di#11;eomorphism be- tween two Hamiltonian systems, produces integrals of them. We treat geodesic

Matveev, Vladimir S.

154

Static detectors and circular-geodesic detectors on the Schwarzschild black hole  

E-Print Network [OSTI]

We examine the response of an Unruh-DeWitt particle detector coupled to a massless scalar field on the (3+1)-dimensional Schwarzschild spacetime, in the Boulware, Hartle-Hawking and Unruh states, for static detectors and detectors on circular geodesics, by primarily numerical methods. For the static detector, the response in the Hartle-Hawking state exhibits the known thermality at the local Hawking temperature, and the response in the Unruh state is thermal at the local Hawking temperature in the limit of a large detector energy gap. For the circular-geodesic detector, we find evidence of thermality in the limit of a large energy gap for the Hartle-Hawking and Unruh states, at a temperature that exceeds the Doppler-shifted local Hawing temperature. Detailed quantitative comparisons between the three states are given. The response in the Hartle-Hawking state is compared with the response in the Minkowski vacuum and in the Minkowski thermal state for the corresponding Rindler, drifted Rindler, and circularly accelerated trajectories. The analysis takes place within first-order perturbation theory and relies in an essential way on stationarity.

Lee Hodgkinson; Jorma Louko; Adrian C. Ottewill

2014-05-05T23:59:59.000Z

155

Horizon surface gravity as 2d geodesic expansion  

E-Print Network [OSTI]

The surface gravity of any Killing horizon, in any spacetime dimension, can be interpreted as a local, two-dimensional expansion rate seen by freely falling observers when they cross the horizon. Any two-dimensional congruence of geodesics invariant under the Killing flow can be used to define this expansion, provided that the observers have unit Killing energy.

Ted Jacobson; Renaud Parentani

2008-08-13T23:59:59.000Z

156

Drilling long geodesics in hyperbolic 3-manifolds K. Bromberg  

E-Print Network [OSTI]

Drilling long geodesics in hyperbolic 3-manifolds K. Bromberg September 22, 2006 1 Introduction to such a deformation as drilling and results which compare the geometry of the original manifold to the geometry of the drilled manifold as drilling theorems. The first results of this type are due to Hodgson and Kerckhoff

Bromberg, Kenneth

157

Quantized geodesic flow and superconductivity of plasma in fireballs  

E-Print Network [OSTI]

An explanation of stability of fireballs is proposed based on quantum effects in a thin surface layer of negatively charged plasma surrounding a positive kernel of a fireball. We construct a quantization of the geodesic flow on the sphere and study the quantum statistics of fermions confined to a spherical surface. Analogy with the BCS theory of superconductivity is explored; spectral gap is estimated.

M. Zelikin

2007-02-21T23:59:59.000Z

158

Non-geodesic Motion in General Relativity and Thermodynamics  

E-Print Network [OSTI]

In a previous article a relationship was established between the linearized metrics of General Relativity associated with geodesics and the Dirac Equation of quantum mechanics. In this paper the extension of that result to arbitrary curves is investigated. In the case of scalar fields, a relationship between mass and temperature is also worked out.

Paul O'Hara

2010-05-10T23:59:59.000Z

159

Scaling cosmologies, geodesic motion and pseudo-susy  

E-Print Network [OSTI]

One-parameter solutions in supergravity carried by scalars and a metric trace out curves on the scalar manifold. In ungauged supergravity these curves describe a geodesic motion. It is known that a geodesic motion sometimes occurs in the presence of a scalar potential and for time-dependent solutions this can happen for scaling cosmologies. This note contains a further study of such solutions in the context of pseudo-supersymmetry for multi-field systems whose first-order equations we derive using a Bogomol'nyi-like method. In particular we show that scaling solutions that are pseudo-BPS must describe geodesic curves. Furthermore, we clarify how to solve the geodesic equations of motion when the scalar manifold is a maximally non-compact coset such as occurs in maximal supergravity. This relies upon a parametrization of the coset in the Borel gauge. We then illustrate this with the cosmological solutions of higher-dimensional gravity compactified on a $n$-torus.

Wissam Chemissany; André ploegh; Thomas Van Riet

2007-08-17T23:59:59.000Z

160

FUTURE POWER GRID INITIATIVE GridOPTICSTM  

E-Print Network [OSTI]

FUTURE POWER GRID INITIATIVE GridOPTICSTM : A Software Framework for Power System Operations technologies needed to support the operations and planning of the future power grid » provide a framework for integrating novel new operations and planning technologies with external power grid systems, including energy

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Now Available: Smart Grid Investments Improve Grid Reliability...  

Energy Savers [EERE]

Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Now Available: Smart Grid Investments Improve Grid Reliability, Resilience, and...

162

Excitation of kinetic geodesic acoustic modes by drift waves in nonuniform plasmas  

SciTech Connect (OSTI)

Effects of system nonuniformities and kinetic dispersiveness on the spontaneous excitation of Geodesic Acoustic Mode (GAM) by Drift Wave (DW) turbulence are investigated based on nonlinear gyrokinetic theory. The coupled nonlinear equations describing parametric decay of DW into GAM and DW lower sideband are derived and then solved both analytically and numerically to investigate the effects on the parametric decay process due to system nonuniformities, such as nonuniform diamagnetic frequency, finite radial envelope of DW pump, and kinetic dispersiveness. It is found that the parametric decay process is a convective instability for typical tokamak parameters when finite group velocities of DW and GAM associated with kinetic dispersiveness and finite radial envelope are taken into account. When, however, nonuniformity of diamagnetic frequency is taken into account, the parametric decay process becomes, time asymptotically, a quasi-exponentially growing absolute instability.

Qiu, Z. [Inst. Fusion Theory and Simulation, Zhejiang Univ., Hangzhou 310027 (China)] [Inst. Fusion Theory and Simulation, Zhejiang Univ., Hangzhou 310027 (China); Chen, L. [Inst. Fusion Theory and Simulation, Zhejiang Univ., Hangzhou 310027 (China) [Inst. Fusion Theory and Simulation, Zhejiang Univ., Hangzhou 310027 (China); Dept. Physics and Astronomy, Univ. of California, Irvine, California 92697-4575 (United States); Zonca, F. [Inst. Fusion Theory and Simulation, Zhejiang Univ., Hangzhou 310027 (China) [Inst. Fusion Theory and Simulation, Zhejiang Univ., Hangzhou 310027 (China); Associazione Euratom-ENEA sulla Fusione, C.P. 65 - I-00044 - Frascati (Italy)

2014-02-15T23:59:59.000Z

163

Smart Grid  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System Highlights SuccessSmart Grid Pages default

164

Smart Grid | Department of Energy  

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

Electricity Delivery and Energy Reliability Smart Grid Smart Grid Overview Smart Grid refers to electrical grids that automatically gather and communicate information on usage,...

165

Icosadeltahedral geometry of fullerenes, viruses and geodesic domes  

E-Print Network [OSTI]

I discuss the symmetry of fullerenes, viruses and geodesic domes within a unified framework of icosadeltahedral representation of these objects. The icosadeltahedral symmetry is explained in details by examination of all of these structures. Using Euler's theorem on polyhedra, it is shown how to calculate the number of vertices, edges, and faces in domes, and number of atoms, bonds and pentagonal and hexagonal rings in fullerenes. Caspar-Klug classification of viruses is elaborated as a specific case of icosadeltahedral geometry.

Antonio Siber

2007-11-22T23:59:59.000Z

166

The geodesic rule and the spectrum of the vacuum  

E-Print Network [OSTI]

We analyze the consequences of a recent argument justifying the validity of the "geodesic rule" which can be used to determine the density of global topological defects. We derive a formula that provides a rough estimate of the number of string-like defects formed in a phase transition. We apply this formula to vacua which are spheres. We provide some reasons for the deviation of our predictions from the corresponding accepted values.

Nikos Kalogeropoulos

2006-06-30T23:59:59.000Z

167

Distribution Grid Integration  

Broader source: Energy.gov [DOE]

The DOE Systems Integration team funds distribution grid integration research and development (R&D) activities to address the technical issues that surround distribution grid planning,...

168

Aerosol Indirect Effect on the Grid-scale Clouds in the Two-way Coupled WRF-CMAQ: Model Description, Development, Evaluation and Regional Analysis  

SciTech Connect (OSTI)

This study implemented first, second and glaciations aerosol indirect effects (AIE) on resolved clouds in the two-way coupled WRF-CMAQ modeling system by including parameterizations for both cloud drop and ice number concentrations on the basis of CMAQpredicted aerosol distributions and WRF meteorological conditions. The performance of the newly-developed WRF-CMAQ model, with alternate CAM and RRTMG radiation schemes, was evaluated with the observations from the CERES satellite and surface monitoring networks (AQS, IMPROVE, CASTNet, STN, and PRISM) over the continental U.S. (CONUS) (12-km resolution) and eastern Texas (4-km resolution) during August and September of 2006. The results at the AQS surface sites show that in August, the NMB values for PM2.5 over the eastern/western U.S (EUS/WUS) and western U.S. (WUS) are 5.3% (?0.1%) and 0.4% (-5.2%) for WRF-CMAQ/CAM (WRF-CMAQ/RRTMG), respectively. The evaluation of PM2.5 chemical composition reveals that in August, WRF-CMAQ/CAM (WRF-CMAQ/RRTMG) consistently underestimated the observed SO4 2? by -23.0% (-27.7%), -12.5% (-18.9%) and -7.9% (-14.8%) over the EUS at the CASTNet, IMPROVE and STN sites, respectively. Both models (WRF-CMAQ/CAM, WRF-CMAQ/RRTMG) overestimated the observed mean OC, EC and TC concentrations over the EUS in August at the IMPROVE sites. Both models generally underestimated the cloud field (SWCF) over the CONUS in August due to the fact that the AIE on the subgrid convective clouds was not considered when the model simulations were run at the 12 km resolution. This is in agreement with the fact that both models captured SWCF and LWCF very well for the 4-km simulation over the eastern Texas when all clouds were resolved by the finer domain. Both models generally overestimated the observed precipitation by more than 40% mainly because of significant overestimation in the southern part of the CONUS in August. The simulations of WRF-CMAQ/CAM and WRF-CMAQ/RRTMG show dramatic improvements for SWCF, LWCF, COD, cloud fractions and precipitation over the ocean relative to those of WRF default cases in August. The model performance in September is similar to that in August except for greater overestimation of PM2.5 due to the overestimations of SO4 2-, NH4 +, NO3 -, and TC over the EUS, less underestimation of clouds (SWCF) over the land areas due to about 10% lower SWCF values and less convective clouds in September.

Yu, Shaocai; Mathur, Rohit; Pleim, Jonathan; Wong, David; Gilliam, R.; Alapaty, Kiran; Zhao, Chun; Liu, Xiaohong

2014-10-24T23:59:59.000Z

169

Landau Damping of Geodesic Acoustic Mode in Toroidally Rotating Tokamaks  

E-Print Network [OSTI]

Geodesic acoustic mode (GAM) is analyzed by using gyro-kinetic equations applicable to low-frequency microinstabilities in a rotating axisymmetric plasma. Dispersion relation of GAM in the presence of arbitrary Mach number is analytically dervied. Toroidal rotation plays the same effects on the GAM regardless of the orientation of equilibrium flow. It is shown that the toroidal Mach number increases the GAM frequency and dramatically decreases the Landau damping rate. Classical gyro-kinetic equation is examined to be not suitable for describing the GAM in a torodially rotating tokamak plasma even for very small Mach number.

Ren, Haijun

2015-01-01T23:59:59.000Z

170

Second harmonic effect on geodesic modes in tokamak plasmas  

SciTech Connect (OSTI)

Results of a kinetic treatment of Geodesic Acoustic Modes (GAMs) that fully takes into account ion parallel dynamics, including the magnetic field component, are presented. The finite-orbit-width (FOW) parameter is considered in the calculation of the second harmonic effect on GAMs. For larger values of the FOW parameter, it is shown that dispersive effects related to the m = 2 harmonics is the cause of the mode frequency splitting and the modes appear due to the interaction with the ion sound mode. Furthermore, the modes may have enhanced damping rates due to second harmonic Landau damping.

Elfimov, A. G.; Galvão, R. M. O. [Institute of Physics, University of São Paulo, São Paulo 05508-090 (Brazil)] [Institute of Physics, University of São Paulo, São Paulo 05508-090 (Brazil); Smolyakov, A. I. [University of Saskatchewan, 116 Science Place, Saskatoon S7N 5E2 (Canada) [University of Saskatchewan, 116 Science Place, Saskatoon S7N 5E2 (Canada); Institute of Tokamak Physics, NRC “Kurchatov Institute,” 123182 Moscow (Russian Federation); Melnikov, A. V. [Institute of Tokamak Physics, NRC “Kurchatov Institute,” 123182 Moscow (Russian Federation)] [Institute of Tokamak Physics, NRC “Kurchatov Institute,” 123182 Moscow (Russian Federation)

2013-05-15T23:59:59.000Z

171

Topological obstructions to a totally geodesic, Riemannian foliation  

E-Print Network [OSTI]

TOPOLOGICAL OBSTRUC, IONS TO A TOTAL' Y GEODFSIC, RIEMANNIAN FOLIATION A Thesis by YINCEI'JT ED'AARD COLL, OUNIOR Subm1tted to the Graduate College of Texas A8M University in partial fult1llment of the requirements for the degree of Ii...ASTER OF SCIENCE December 1983 Major Subject: Mathematics TOPOLOGICAL OBSTRUCTIONS TO A TOTALLY GEODESIC RIEMANNIAN FOLIATION A Thesis by VINCENT EDWARD COLL, JUNIOR Approved as to style and content by. D. L. Johnson (Chairman of Committee) D. K. Friesen...

Coll, Vincent Edward

1983-01-01T23:59:59.000Z

172

Electron geodesic acoustic modes in electron temperature gradient mode turbulence  

SciTech Connect (OSTI)

In this work, the first demonstration of an electron branch of the geodesic acoustic mode (el-GAM) driven by electron temperature gradient (ETG) modes is presented. The work is based on a fluid description of the ETG mode retaining non-adiabatic ions and the dispersion relation for el-GAMs driven nonlinearly by ETG modes is derived. A new saturation mechanism for ETG turbulence through the interaction with el-GAMs is found, resulting in a significantly enhanced ETG turbulence saturation level compared to the mixing length estimate.

Anderson, Johan; Nordman, Hans [Department of Earth and Space Sciences, Chalmers University of Technology, SE-412 96 Goeteborg (Sweden); Singh, Raghvendra; Kaw, Predhiman [Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India)

2012-08-15T23:59:59.000Z

173

Smart Grid Consortium, Response of New York State Smart Grid...  

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

Consortium, Response of New York State Smart Grid Addressing Policy and Logistical Challenges Smart Grid Consortium, Response of New York State Smart Grid Addressing Policy and...

174

Grid Interaction Tech Team, and International Smart Grid Collaboration...  

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

Team, and International Smart Grid Collaboration Grid Interaction Tech Team, and International Smart Grid Collaboration 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

175

2012 Smart Grid Peer Review Presentations - Day 2 Smart Grid...  

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

Smart Grid Panel Discussion 2012 Smart Grid Peer Review Presentations - Day 2 Smart Grid Panel Discussion The Office of Electricity Delivery and Energy Reliability held its...

176

Geodesic stability for KS Black hole in Horava-Lifshitz gravity via Lyapunov exponents  

E-Print Network [OSTI]

By computing the Lyapunov exponent, which is the inverse of the instability time scale associated with this geodesic motion we show that there is two region of space which in both of them the equatorial timelike geodesics are stable via Lyapunov measure of stability.

M. R. Setare; D. Momeni

2010-09-17T23:59:59.000Z

177

Grid Logging: Best Practices Guide  

E-Print Network [OSTI]

Revision date: March 1, 2008 Grid Logging: Best Practicesis to help developers of Grid middleware and applicationlog files that will be useful to Grid administrators, users,

Tierney, Brian L

2008-01-01T23:59:59.000Z

178

Sandia National Laboratories: SMART Grid  

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

Offers Approach to Help Utilities Understand Effects of PV Variability on the Grid On March 7, 2013, in DETL, Distribution Grid Integration, Energy, Energy Surety, Facilities, Grid...

179

Smart Grid Data Integrity Attack  

E-Print Network [OSTI]

Data Injection Attacks on Power Grids”, IEEE Transactionson Smart Grid, vol. 2, no. 2, June [21] O. Kosut, L.Data Attacks on Smart Grid State Estimation: Attack

Poolla, Kameshwar

2012-01-01T23:59:59.000Z

180

Geodesic Bezier Curves: a Tool for Modeling on Triangulations Dimas Martinez Morera Paulo Cezar Carvalho Luiz Velho  

E-Print Network [OSTI]

Geodesic B´ezier Curves: a Tool for Modeling on Triangulations Dimas Mart´inez Morera Paulo Cezar is trimmed, final result. Abstract We define a new class of curves, called geodesic B´ezier curves care is taken to achieve interactive rates for modeling tasks. Keywords: Geodesic B´ezier Curve

Note: This page contains sample records for the topic "geodesic grid coupled" 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

ON GROUPS WHOSE GEODESIC GROWTH IS POLYNOMIAL MARTIN R. BRIDSON, JOSE BURILLO, MURRAY ELDER, AND ZORAN SUNIC  

E-Print Network [OSTI]

ON GROUPS WHOSE GEODESIC GROWTH IS POLYNOMIAL MARTIN R. BRIDSON, JOS´E BURILLO, MURRAY ELDER, AND ZORAN SUNI´C Abstract. This note records some observations concerning geodesic growth functions. If a nilpotent group is not virtually cyclic then it has exponential geodesic growth with respect to all finite

Burillo, José

182

Excitation of kinetic geodesic acoustic modes by drift waves in nonuniform plasmas Z. Qiu, L. Chen, and F. Zonca  

E-Print Network [OSTI]

Excitation of kinetic geodesic acoustic modes by drift waves in nonuniform plasmas Z. Qiu, L. Chen://scitation.aip.org/termsconditions. Downloaded to IP: 192.107.52.30 On: Thu, 06 Feb 2014 15:42:45 #12;Excitation of kinetic geodesic acoustic) Effects of system nonuniformities and kinetic dispersiveness on the spontaneous excitation of Geodesic

Zonca, Fulvio

183

arXiv:0707.4149v1[math.DG]27Jul2007 Test configurations and Geodesic rays  

E-Print Network [OSTI]

arXiv:0707.4149v1[math.DG]27Jul2007 Test configurations and Geodesic rays Xiuxiong Chen , Yudong Tang February 5, 2008 Contents 1 Introduction 2 2 Preliminary 5 2.1 Geodesic rays in K¨ahler potential Relative C1,1 geodesic ray from smooth test configuration 8 3.1 Existence

Chen, Xiuxiong

184

Geodesic acoustic mode excitation by a spatially broad energetic particle Z. Qiu, F. Zonca, and L. Chen  

E-Print Network [OSTI]

Geodesic acoustic mode excitation by a spatially broad energetic particle beam Z. Qiu, F. Zonca subject to AIP license or copyright; see http://pop.aip.org/about/rights_and_permissions #12;Geodesic-particle-induced geodesic acoustic mode are systematically studied, and their properties are found to depend

Zonca, Fulvio

185

Image-Set Matching using a Geodesic Distance and Cohort Normalization Yui Man Lui, J. Ross Beveridge, Bruce A. Draper  

E-Print Network [OSTI]

Image-Set Matching using a Geodesic Distance and Cohort Normalization Yui Man Lui, J. Ross are viewed as points on a Grassmann manifold, then geodesic distance on the manifold becomes the natural way-known image-set matching algorithm, Mutual Subspace Method (MSM), which does not use geodesic dis- tance

Draper, Bruce A.

186

Smart Grid Publications Archive | Department of Energy  

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

Smart Grid Publications Archive Smart Grid Publications Archive 2010 Smart Grid System Report, February 2012 2009 Smart Grid System Report, July 2009 The Smart Grid Stakeholder...

187

Fuel rod support grid  

DOE Patents [OSTI]

A grid for the support of nuclear fuel rods arranged in a triangular array. The grid is formed by concentric rings of strap joined by radially arranged web sections.

Downs, Robert E. (Monroeville, PA); Schwallie, Ambrose L. (Greensburg, PA)

1985-01-01T23:59:59.000Z

188

The soft grid  

E-Print Network [OSTI]

The grid in architecture is a systematic organization of space. The means that architects use to organize space are, almost by definition, rigid and totalizing. The Cartesian grid, which will serve as the antagonist of the ...

Kardasis, Ari (Ari David)

2011-01-01T23:59:59.000Z

189

Method of grid generation  

DOE Patents [OSTI]

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

Barnette, Daniel W. (Veguita, NM)

2002-01-01T23:59:59.000Z

190

Virtual Private Environments for Multiphysics Code Validation on Computing Grids  

E-Print Network [OSTI]

Virtual Private Environments for Multiphysics Code Validation on Computing Grids Toan Nguyen-based computing environments and deploys, tests and analyzes multiphysics codes. A second approach executes model coupling, error correlations, alert definitions, best usage practices, code verification and code

Paris-Sud XI, Université de

191

Understanding The Smart Grid  

SciTech Connect (OSTI)

The report provides an overview of what the Smart Grid is and what is being done to define and implement it. The electric industry is preparing to undergo a transition from a centralized, producer-controlled network to a decentralized, user-interactive one. Not only will the technology involved in the electric grid change, but the entire business model of the industry will change too. A major objective of the report is to identify the changes that the Smart Grid will bring about so that industry participants can be prepared to face them. A concise overview of the development of the Smart Grid is provided. It presents an understanding of what the Smart Grid is, what new business opportunities or risks might come about due to its introduction, and what activities are already taking place regarding defining or implementing the Smart Grid. This report will be of interest to the utility industry, energy service providers, aggregators, and regulators. It will also be of interest to home/building automation vendors, information technology vendors, academics, consultants, and analysts. The scope of the report includes an overview of the Smart Grid which identifies the main components of the Smart Grid, describes its characteristics, and describes how the Smart Grid differs from the current electric grid. The overview also identifies the key concepts involved in the transition to the Smart Grid and explains why a Smart Grid is needed by identifying the deficiencies of the current grid and the need for new investment. The report also looks at the impact of the Smart Grid, identifying other industries which have gone through a similar transition, identifying the overall benefits of the Smart Grid, and discussing the impact of the Smart Grid on industry participants. Furthermore, the report looks at current activities to implement the Smart Grid including utility projects, industry collaborations, and government initiatives. Finally, the report takes a look at key technology providers involved in the Smart Grid and provides profiles on them including contact information, company overviews, technology reviews, and key Smart Grid activities.

NONE

2007-11-15T23:59:59.000Z

192

Geodesic Flow and Two (Super) Component Analog of the Camassa-Holm Equation  

E-Print Network [OSTI]

We derive the 2-component Camassa-Holm equation and corresponding N=1 super generalization as geodesic flows with respect to the $H^1$ metric on the extended Bott-Virasoro and superconformal groups, respectively.

Partha Guha; Peter J. Olver

2006-05-23T23:59:59.000Z

193

Geodesic Completeness for Sobolev $H^{s}$-metrics on the Diffeomorphisms Group of the Circle  

E-Print Network [OSTI]

We prove that the weak Riemannian metric induced by the fractional Sobolev norm $H^s$ on the diffeomorphisms group of the circle is geodesically complete, provided $s>3/2$.

Joachim Escher; Boris Kolev

2014-05-24T23:59:59.000Z

194

Transdisciplinary electric power grid science Charles D. Brummitta,b,1  

E-Print Network [OSTI]

storm damage or build distributed generation?). The "smart grid," which monitors and controls electrical to cities couples distant regions. Connections among regions of a power grid spread risk, like in otherOPINION Transdisciplinary electric power grid science Charles D. Brummitta,b,1 , Paul D. H. Hinesc

D'Souza, Raissa

195

Timelike Geodesic Currents in the Stationary, Axisymmetric, Force-free Magnetosphere of a Kerr Black Hole  

E-Print Network [OSTI]

The structural properties of geodesic currents in an ambient Kerr background is studied from an analytical point of view. The geodesics in the congruence correspond to charged particles that carry energy and angular momentum from the black hole through the Blandford-Znajek mechanism. It is shown that the resulting magnetosphere naturally satisfies the Znajek regularity condition. Particular attention is paid here to the energy extracted by matter currents rather than by electromagnetic Poynting fluxes.

Govind Menon; Charles Dermer

2008-11-12T23:59:59.000Z

196

Integration of geodesic flows on homogeneous spaces: the case of a wild lie group  

E-Print Network [OSTI]

We obtain necessary and sufficient conditions for the integrability in quadratures of geodesic flows on homogeneous spaces $M$ with invariant and central metrics. The proposed integration algorithm consists in using a special canonical transformation in the space $T^*M$ based on constructing the canonical coordinates on the orbits of the coadjoint representation and on the simplectic sheets of the Poisson algebra of invariant functions. This algorithm is applicable to integrating geodesic flows on homogeneous spaces of a wild Lie group.

A. A. Magazev; I. V. Shirokov

2007-03-21T23:59:59.000Z

197

Verification of the coupled fluid/solid transfer in a CASL grid-to-rod-fretting simulation : a technical brief on the analysis of convergence behavior and demonstration of software tools for verification.  

SciTech Connect (OSTI)

For a CASL grid-to-rod fretting problem, Sandia's Percept software was used in conjunction with the Sierra Mechanics suite to analyze the convergence behavior of the data transfer from a fluid simulation to a solid mechanics simulation. An analytic function, with properties relatively close to numerically computed fluid approximations, was chosen to represent the pressure solution in the fluid domain. The analytic pressure was interpolated on a sequence of grids on the fluid domain, and transferred onto a separate sequence of grids in the solid domain. The error in the resulting pressure in the solid domain was measured with respect to the analytic pressure. The error in pressure approached zero as both the fluid and solids meshes were refined. The convergence of the transfer algorithm was limited by whether the source grid resolution was the same or finer than the target grid resolution. In addition, using a feature coverage analysis, we found gaps in the solid mechanics code verification test suite directly relevant to the prototype CASL GTRF simulations.

Copps, Kevin D.

2011-12-01T23:59:59.000Z

198

Exploiting the Computational Grid Lecture 1 Globus and the Grid  

E-Print Network [OSTI]

Exploiting the Computational Grid Lecture 1 ­ Globus and the Grid · The grid needs middleware to enable things such as logins etc · The toolkit model for the grid is to define a set of standards for the grid and then develop applications on top. The low level stuff is then hidden from the user · Globus

199

Mapping Unstructured Grids to Structured Grids and Multigrid  

E-Print Network [OSTI]

Chapter 4 Mapping Unstructured Grids to Structured Grids and Multigrid Many problems based solution is to map the unstructured grid onto a structured grid and then apply multigrid to a sequence). We 65 #12; CHAPTER 4. MAPPING UNSTRUCTURED GRIDS 66 show that unless great care is taken

200

Cyber Security & Smart Grid  

E-Print Network [OSTI]

Cyber Security & Smart Grid Jonathan Shapiro Texas Institute The Clean Air Through Energy Efficiency (CATEE) Conference Cyber Security & Smart Grid ESL-KT-11-11-23 CATEE 2011, Dallas, Texas, Nov. 7 ? 9, 2011 Cyber Security and The Smart... and communication protocols. ESL-KT-11-11-23 CATEE 2011, Dallas, Texas, Nov. 7 ? 9, 2011 Smart Grid Systems ?Current Cyber Security Issues ? Advanced Metering Infrastructure (AMI) Security ? The wireless devices are used in the smart meters located...

Shapiro, J.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Smart Grid: Transforming the Electric System  

SciTech Connect (OSTI)

This paper introduces smart grid concepts, summarizes the status of current smart grid related efforts, and explains smart grid priorities.

Widergren, Steven E.

2010-04-13T23:59:59.000Z

202

Grid Transformation Workshop  

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

3-03-Grid-Transformation-Workshop Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects &...

203

Smart Grid Data Integrity Attack  

E-Print Network [OSTI]

IEEE Transactions on Smart Grid, vol. 2, no. 2, June [21] O.Malicious Data Attacks on Smart Grid State Estimation:Framework and Roadmap for Smart Grid Interoperability Stan-

Poolla, Kameshwar

2012-01-01T23:59:59.000Z

204

Smart Grid Data Integrity Attack  

E-Print Network [OSTI]

IEEE Transactions on Smart Grid, vol. 2, no. 2, June [21] O.Malicious Data Attacks on Smart Grid State Estimation:Attack and Detection in Smart Grid,” to appear in IEEE

Poolla, Kameshwar

2012-01-01T23:59:59.000Z

205

Sandia National Laboratories: SMART Grid  

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

SMART Grid Vermont and Sandia National Laboratories Announce Energy Research Center On December 20, 2011, in Energy Efficiency, Grid Integration, Microgrid, Modeling & Analysis,...

206

Compressed Sensing Off the Grid  

E-Print Network [OSTI]

Jul 26, 2012 ... pressed sensing, the frequencies are not assumed to lie on a grid, but ... where the true parameters lie on the grid, discretization has several.

2012-07-26T23:59:59.000Z

207

Sandia National Laboratories: SMART Grid  

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

Energy Storage Safety Workshop On April 7, 2014, in Capabilities, CINT, Distribution Grid Integration, Energy, Energy Storage, Energy Storage Systems, Facilities, Grid...

208

Sandia National Laboratories: SMART Grid  

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

Photovoltaic Specialists (PVSC) Conference On August 14, 2013, in DETL, Distribution Grid Integration, Energy, Facilities, Grid Integration, News, News & Events, Photovoltaic,...

209

Future Grid: The Environment Future Grid Initiative White Paper  

E-Print Network [OSTI]

Future Grid: The Environment Future Grid Initiative White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;Future Grid: The Environment Prepared for the Project "The Future Grid to Enable Sustainable Energy Systems" Funded by the U

210

Real Time Simulation of Power Grid Disruptions  

SciTech Connect (OSTI)

DOE-OE and DOE-SC workshops (Reference 1-3) identified the key power grid problem that requires insight addressable by the next generation of exascale computing is coupling of real-time data streams (1-2 TB per hour) as the streams are ingested to dynamic models. These models would then identify predicted disruptions in time (2-4 seconds) to trigger the smart grid s self healing functions. This project attempted to establish the feasibility of this approach and defined the scientific issues, and demonstrated example solutions to important smart grid simulation problems. These objectives were accomplished by 1) using the existing frequency recorders on the national grid to establish a representative and scalable real-time data stream; 2) invoking ORNL signature identification algorithms; 3) modeling dynamically a representative region of the Eastern interconnect using an institutional cluster, measuring the scalability and computational benchmarks for a national capability; and 4) constructing a prototype simulation for the system s concept of smart grid deployment. The delivered ORNL enduring capability included: 1) data processing and simulation metrics to design a national capability justifying exascale applications; 2) Software and intellectual property built around the example solutions; 3) demonstrated dynamic models to design few second self-healing.

Chinthavali, Supriya [ORNL; Dimitrovski, Aleksandar D [ORNL; Fernandez, Steven J [ORNL; Groer, Christopher S [ORNL; Nutaro, James J [ORNL; Olama, Mohammed M [ORNL; Omitaomu, Olufemi A [ORNL; Shankar, Mallikarjun [ORNL; Spafford, Kyle L [ORNL; Vacaliuc, Bogdan [ORNL

2012-11-01T23:59:59.000Z

211

Transmission Grid Integration  

Broader source: Energy.gov [DOE]

The levels of solar energy penetration envisioned by the DOE SunShot Initiative must be interconnected effectively onto the transmission grid. This interconnection requires an in-depth...

212

Smart Grid Overview  

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

S imulator NREL Smart Grid TesHng Power I nfrastructure 11 Monitoring on DistribuLon Transformer Anatolia Subdivision --- SMUD 2kW of PV on each home Modeling System Impacts...

213

Geodesic Deviation Equation in GR equivalent theory of $f(T)$ gravity  

E-Print Network [OSTI]

In this work, we show that it is possible to study the GR equivalent notion of geodesic deviation in $f(T)$ gravity, in spite of the fact that in teleparallel gravity there is no notion of geodesics, and the torsion is responsible for the appearance of gravitational interaction. In this regard, we obtain the GR equivalent of $f(T)$ gravity whose equations are in the modified gravity form such as $f(R)$ gravity. Then, we obtain the GDE within the context of this modified gravity. In this way, the obtained geodesic deviation equation will correspond to the $f(T)$ gravity. Eventually, we extend the calculations to obtain the modification of Matting relation.

Darabi, F; Atazadeh, K

2015-01-01T23:59:59.000Z

214

Geodesic Deviation Equation in GR equivalent theory of $f(T)$ gravity  

E-Print Network [OSTI]

In this work, we show that it is possible to study the GR equivalent notion of geodesic deviation in $f(T)$ gravity, in spite of the fact that in teleparallel gravity there is no notion of geodesics, and the torsion is responsible for the appearance of gravitational interaction. In this regard, we obtain the GR equivalent of $f(T)$ gravity whose equations are in the modified gravity form such as $f(R)$ gravity. Then, we obtain the GDE within the context of this modified gravity. In this way, the obtained geodesic deviation equation will correspond to the $f(T)$ gravity. Eventually, we extend the calculations to obtain the modification of Matting relation.

F. Darabi; M. Mousavi; K. Atazadeh

2014-12-31T23:59:59.000Z

215

Future geodesic completeness of some spatially homogeneous solutions of the vacuum Einstein equations in higher dimensions  

E-Print Network [OSTI]

It is known that all spatially homogeneous solutions of the vacuum Einstein equations in four dimensions which exist for an infinite proper time towards the future are future geodesically complete. This paper investigates whether the analogous statement holds in higher dimensions. A positive answer to this question is obtained for a large class of models which can be studied with the help of Kaluza-Klein reduction to solutions of the Einstein-scalar field equations in four dimensions. The proof of this result makes use of a criterion for geodesic completeness which is applicable to more general spatially homogeneous models.

Arne Goedeke; Alan D. Rendall

2010-02-21T23:59:59.000Z

216

Smart Grid Integration Laboratory  

SciTech Connect (OSTI)

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

Wade Troxell

2011-09-30T23:59:59.000Z

217

3+1 geodesic equation and images in numerical spacetimes This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network [OSTI]

3+1 geodesic equation and images in numerical spacetimes This article has been downloaded from.1088/0264-9381/29/24/245005 3+1 geodesic equation and images in numerical spacetimes F H Vincent1,2 , E Gourgoulhon2 and J Novak Online at stacks.iop.org/CQG/29/245005 Abstract The equations governing null and timelike geodesics

Gourgoulhon, Eric

218

arXiv:0908.1824v2[physics.comp-ph]24Feb2010 The calculation of longitude and latitude from geodesic measurements  

E-Print Network [OSTI]

arXiv:0908.1824v2[physics.comp-ph]24Feb2010 The calculation of longitude and latitude from geodesic, 2009; revised: February 24, 2010) 1. INTRODUCTION Consider a geodesic line between two points A and B by deriving the fundamental properties of geodesic lines on a spheroid of revolution. Even though aspects

Karney, Charles

219

Geodesic Based Ink Separation for Spectral Printing Behnam Bastani*, Brian Funt**, *Hewlett-Packard Company, San Diego, CA, USA **Simon Fraser University, Vancouver, BC, Canada  

E-Print Network [OSTI]

Geodesic Based Ink Separation for Spectral Printing Behnam Bastani*, Brian Funt**, *Hewlett an interpolation between printer gamut points neighboring a projected point point's geodesic location interpolation in geodesic locations to find the best ink combination to match a spectral reflectance. Mc

Funt, Brian

220

NREL: Transmission Grid Integration - Grid Simulation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andData and ResourcesOtherForecasting NREL researchers use solarGrid

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


221

NREL Smart Grid Projects  

SciTech Connect (OSTI)

Although implementing Smart Grid projects at the distribution level provides many advantages and opportunities for advanced operation and control, a number of significant challenges must be overcome to maintain the high level of safety and reliability that the modern grid must provide. For example, while distributed generation (DG) promises to provide opportunities to increase reliability and efficiency and may provide grid support services such as volt/var control, the presence of DG can impact distribution operation and protection schemes. Additionally, the intermittent nature of many DG energy sources such as photovoltaics (PV) can present a number of challenges to voltage regulation, etc. This presentation provides an overview a number of Smart Grid projects being performed by the National Renewable Energy Laboratory (NREL) along with utility, industry, and academic partners. These projects include modeling and analysis of high penetration PV scenarios (with and without energy storage), development and testing of interconnection and microgrid equipment, as well as the development and implementation of advanced instrumentation and data acquisition used to analyze the impacts of intermittent renewable resources. Additionally, standards development associated with DG interconnection and analysis as well as Smart Grid interoperability will be discussed.

Hambrick, J.

2012-01-01T23:59:59.000Z

222

Singularity of projections of 2-dimensional measures invariant under the geodesic flow  

E-Print Network [OSTI]

We show that on any compact Riemann surface with variable negative curvature there exists a measure which is invariant and ergodic under the geodesic flow and whose projection to the base manifold is 2-dimensional and singular with respect to the 2-dimensional Lebesgue measure.

Risto Hovila; Esa Järvenpää; Maarit Järvenpää; François Ledrappier

2011-04-14T23:59:59.000Z

223

Effect of toroidal rotation on the geodesic acoustic mode in magnetohydrodynamics  

SciTech Connect (OSTI)

Theoretical research on the geodesic acoustic mode (GAM) induced by equilibrium toroidal rotation flow in the tokamak plasmas is approached by using ideal magnetohydrodynamic model. The dispersion relation of the GAM is presented by taking into account magnetic field perturbations. It is shown that {beta} can decrease the frequency of the GAM.

Ren Haijun [CAS Key Laboratory of Basic Plasma Physics, University of Science and Technology of China, Hefei 230026 (China)

2012-09-15T23:59:59.000Z

224

Lens chains and the geodesic algorithm for conformal mapping Donald E. Marshall  

E-Print Network [OSTI]

Lens chains and the geodesic algorithm for conformal mapping Donald E. Marshall Abstract. We. This modification while improving the accuracy also allows us to give a simpler proof than in Marshall and Rohde [MR of conformal maps is described in Marshall and Rohde[MR]. Briefly, if z0, . . . , zn are distinct points

225

GROWDERS Demonstration of Grid Connected Electricity Systems...  

Open Energy Info (EERE)

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid Project) (Spain) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected...

226

Networked Loads in the Distribution Grid  

E-Print Network [OSTI]

Lu, and Deborah A. Frincke. Smart-Grid Security Issues. IEEELoads in the Distribution Grid Zhifang Wang ? , Xiao Li † ,Transformer   sensors   Grid   Cyber  system   Cooling    

Wang, Zhifang; Li, Xiao; Muthukumar, Vishak; Scaglione, Anna; Peisert, Sean; McParland, Chuck

2012-01-01T23:59:59.000Z

227

Flexible Transmission in the Smart Grid  

E-Print Network [OSTI]

New England Outlook: Smart Grid is About Consumers,” Apr. [Transmission in the Smart Grid By Kory Walter Hedman ATransmission in the Smart Grid by Kory Walter Hedman Doctor

Hedman, Kory Walter

2010-01-01T23:59:59.000Z

228

FUTURE POWER GRID INITIATIVE GridOPTICSTM Power Networking,  

E-Print Network [OSTI]

FUTURE POWER GRID INITIATIVE GridOPTICSTM Power Networking, Equipment, and Technology (powerNET) Testbed OBJECTIVE A lot of interest in research, improvements, and testing surrounds the power grid to these activities. Specifically, » power system equipment is expensive and has a high knowledge barrier

229

GridWise Alliance: Smart Grid RFI: Addressing Policy and Logistical...  

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

GridWise Alliance: Smart Grid RFI: Addressing Policy and Logistical Challenges GridWise Alliance: Smart Grid RFI: Addressing Policy and Logistical Challenges The GridWise Alliance...

230

Stability of elastic grid shells  

E-Print Network [OSTI]

The elastic grid shell is a solution that combines double curvature and ease of mounting. This structural system, based on the deformation of an initially at grid without shear stiffness was invented more than fifty years ...

Mesnil, Romain, M. Eng. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

231

Smart Grid | Department of Energy  

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

Energy Usage Smart Grid Smart Grid October 21, 2014 Line workers get hands-on experience with an electrical pole as part of their training. | Photo courtesy of David Weaver....

232

Unlocking the smart grid  

SciTech Connect (OSTI)

The country has progressed in a relatively short time from rotary dial phones to computers, cell phones, and iPads. With proper planning and orderly policy implementation, the same will happen with the Smart Grid. Here are some suggestions on how to proceed. (author)

Rokach, Joshua Z.

2010-10-15T23:59:59.000Z

233

APEC Smart Grid Initiative  

SciTech Connect (OSTI)

This brief paper describes the activities of the Asia Pacific Economic Cooperation (APEC) Smart Grid Initiative (ASGI) which is being led by the U.S. and developed by the APEC Energy Working Group. In the paper, I describe the origin of the initiative and briefly mention the four major elements of the initiative along with existing APEC projects which support it.

Bloyd, Cary N.

2012-03-01T23:59:59.000Z

234

Grid Architecture William E. Johnston  

E-Print Network [OSTI]

·numerical grid generators ·etc. Apache Tomcat&WebSphere &Cold Fusion=JVM + servlet instantiation + routing

235

Grid Transfer Remark 4.1 Contents of this chapter. Consider a grid with grid size h and the  

E-Print Network [OSTI]

Chapter 4 Grid Transfer Remark 4.1 Contents of this chapter. Consider a grid with grid size h that there might be an iterative method for solving this system efficiently, which uses also coarser grids way between the grids. 2 4.1 The Coarse Grid System and the Residual Equa- tion Remark 4.2 Basic idea

John, Volker

236

Conference Proceedings Available - The Smart Grid Experience...  

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

Conference Proceedings Available - The Smart Grid Experience: Applying Results, Reaching Beyond Conference Proceedings Available - The Smart Grid Experience: Applying Results,...

237

Cloud Computing for the Grid: GridControl: A Software Platform to Support the Smart Grid  

SciTech Connect (OSTI)

GENI Project: Cornell University is creating a new software platform for grid operators called GridControl that will utilize cloud computing to more efficiently control the grid. In a cloud computing system, there are minimal hardware and software demands on users. The user can tap into a network of computers that is housed elsewhere (the cloud) and the network runs computer applications for the user. The user only needs interface software to access all of the cloud’s data resources, which can be as simple as a web browser. Cloud computing can reduce costs, facilitate innovation through sharing, empower users, and improve the overall reliability of a dispersed system. Cornell’s GridControl will focus on 4 elements: delivering the state of the grid to users quickly and reliably; building networked, scalable grid-control software; tailoring services to emerging smart grid uses; and simulating smart grid behavior under various conditions.

None

2012-02-08T23:59:59.000Z

238

Course Description Grid Computing, NGSSC, 2p  

E-Print Network [OSTI]

: Application projects, software development projects, political and administrative aspects on grids, emerging grid standards (OGSA/OGSI), etc. ­ Foundations in algorithm and software development for grids. · Grid issues. ­ Sample grid middleware packages, software tools, and problem solv- ing environments for grids

Elmroth, Erik

239

Shearing and geodesic axially symmetric perfect fluids that do not produce gravitational radiation  

E-Print Network [OSTI]

Using a framework based on the 1+3 formalism we carry out a study on axially and reflection symmetric perfect and geodesic fluids, looking for possible models of sources radiating gravitational waves. Therefore, the fluid should be necessarily shearing, for otherwise the magnetic part of the Weyl tensor vanishes, leading to a vanishing of the super-Poynting vector. However, for the family of perfect, geodesic fluids considered here, it appears that all possible cases reduce to conformally flat, shear--free, vorticity-free, fluids, i.e Friedmann-Roberston-Walker. The super-Poynting vector vanishes and therefore no gravitational radiation is expected to be produced. The physical meaning of the obtained result is discussed.

Herrera, L; Ospino, J; Carot, J

2015-01-01T23:59:59.000Z

240

Geodesic deviations: modeling extreme mass-ratio systems and their gravitational waves  

E-Print Network [OSTI]

The method of geodesic deviations has been applied to derive accurate analytic approximations to geodesics in Schwarzschild space-time. The results are used to construct analytic expressions for the source terms in the Regge-Wheeler and Zerilli-Moncrief equations, which describe the propagation of gravitational waves emitted by a compact massive object moving in the Schwarzschild background space-time. The wave equations are solved numerically to provide the asymptotic form of the wave at large distances for a series of non-circular bound orbits with periastron distances up to the ISCO radius, and the power emitted in gravitational waves by the extreme-mass ratio binary system is computed. The results compare well with those of purely numerical approaches.

G. Koekoek; J. W. van Holten

2011-03-29T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Circular geodesics and accretion disks in Janis-Newman-Winicour and Gamma metric  

E-Print Network [OSTI]

We study here circular timelike geodesics in the Janis-Newman-Winicour and Gamma metric spacetimes which contain a strong curvature naked singularity and reduce to the Schwarzschild metric for a specific value of one of the parameters. We show that for both the metrics the range of allowed parameters can be divided into three regimes where structure of the circular geodesics is qualitatively different. It follows that the properties of the accretion disks around such naked singularities can be significantly different from those of disks around black holes. This adds to previous studies showing that if naked singularities exist in nature, their observational signature would be significantly different from that of the black hole.

Anirban N. Chowdhury; Mandar Patil; Daniele Malafarina; Pankaj S. Joshi

2012-04-19T23:59:59.000Z

242

Vacuum non-expanding horizons and shear-free null geodesic congruences  

E-Print Network [OSTI]

We investigate the geometry of a particular class of null surfaces in space-time called vacuum Non-Expanding Horizons (NEHs). Using the spin-coefficient equation, we provide a complete description of the horizon geometry, as well as fixing a canonical choice of null tetrad and coordinates on a NEH. By looking for particular classes of null geodesic congruences which live exterior to NEHs but have the special property that their shear vanishes at the intersection with the horizon, a good cut formalism for NEHs is developed which closely mirrors asymptotic theory. In particular, we show that such null geodesic congruences are generated by arbitrary choice of a complex world-line in a complex four dimensional space, each such choice induces a CR structure on the horizon, and a particular world-line (and hence CR structure) may be chosen by transforming to a privileged tetrad frame.

T. M. Adamo; E. T. Newman

2009-08-05T23:59:59.000Z

243

Data Management in the GridRPC GridRPC Data Management API  

E-Print Network [OSTI]

Data Management in the GridRPC Issues Conclusion GridRPC Data Management API Implementations, Le Mahec, Nakada GridRPC DM API: Implem. and Interop. Issues (1/13) #12;Data Management in the GridRPC Issues Conclusion Goal GridRPC DM types: Reminder 1 Data Management in the GridRPC Goal GridRPC DM types

Caniou, Yves

244

Non-relativistic Geodesic Behaviors for a Massive Charged Particle Falling in de Sitter Spacetime  

E-Print Network [OSTI]

In this article, continuing the work done in the previous paper (M. Fathi 2012), we apply a Lagrangian formalism to demonstrate the shape of the geodesic motion for a massive charged particle which is falling freely in a de Sitter spacetime. We will show that a spiral shape of the trajectory is available, due to the logarithmic behavior of time, with respect to the proper time.

Farrin Payandeh; Mohsen Fathi

2012-10-10T23:59:59.000Z

245

Geodesic and Path Motion in the Nonsymmetric Gravitational Theory  

E-Print Network [OSTI]

We study the problem of test-particle motion in the Nonsymmetric Gravitational Theory (NGT) assuming the four-velocity of the particle is parallel-transported along the trajectory. The predicted motion is studied on a static, spherically symmetric background field, with particular attention paid to radial and circular motions. Interestingly, it is found that the proper time taken to travel between any two non-zero radial positions is finite. It is also found that circular orbits can be supported at lower radii than in General Relativity for certain forms of motion. We present three interactions which could be used as alternate methods for coupling a test-particle to the antisymmetric components of the NGT field. One of these takes the form of a Yukawa force in the weak-field limit of a static, spherically symmetric field, which could lead to interesting phenomenology.

J. Legare; J. W. Moffat

1995-09-21T23:59:59.000Z

246

Geodesic motion in the space-time of cosmic strings interacting via magnetic fields  

E-Print Network [OSTI]

We study the geodesic motion of test particles in the space-time of two Abelian-Higgs strings interacting via their magnetic fields. These bound states of cosmic strings constitute a field theoretical realization of p-q-strings which are predicted by inflationary models rooted in String Theory, e.g. brane inflation. In contrast to previously studied models describing p-q-strings our model possesses a Bogomolnyi-Prasad-Sommerfield (BPS) limit. If cosmic strings exist it would be exciting to detect them by direct observation. We propose that this can be done by the observation of test particle motion in the space-time of these objects. In order to be able to make predictions we have to solve the field equations describing the configuration as well as the geodesic equation numerically. The geodesics can then be classified according to the test particle's energy, angular momentum and momentum along the string axis. We find that the interaction of two Abelian-Higgs strings can lead to the existence of bound orbits that would be absent without the interaction. We also discuss the minimal and maximal radius of orbits and comment on possible applications in the context of gravitational wave emission.

Betti Hartmann; Valeria Kagramanova

2012-07-25T23:59:59.000Z

247

NVU dynamics. I. Geodesic motion on the constant-potential-energy hypersurface  

E-Print Network [OSTI]

An algorithm is derived for computer simulation of geodesics on the constant potential-energy hypersurface of a system of N classical particles. First, a basic time-reversible geodesic algorithm is derived by discretizing the geodesic stationarity condition and implementing the constant potential energy constraint via standard Lagrangian multipliers. The basic NVU algorithm is tested by single-precision computer simulations of the Lennard-Jones liquid. Excellent numerical stability is obtained if the force cutoff is smoothed and the two initial configurations have identical potential energy within machine precision. Nevertheless, just as for NVE algorithms, stabilizers are needed for very long runs in order to compensate for the accumulation of numerical errors that eventually lead to "entropic drift" of the potential energy towards higher values. A modification of the basic NVU algorithm is introduced that ensures potential-energy and step-length conservation; center-of-mass drift is also eliminated. Analytical arguments confirmed by simulations demonstrate that the modified NVU algorithm is absolutely stable. Finally, simulations show that the NVU algorithm and the standard leap-frog NVE algorithm have identical radial distribution functions for the Lennard-Jones liquid.

Trond S. Ingebrigtsen; Søren Toxvaerd; Ole J. Heilmann; Thomas B. Schrøder; Jeppe C. Dyre

2011-08-06T23:59:59.000Z

248

Smart Grid - Transforming Power System Operations  

SciTech Connect (OSTI)

Abstract—Electric power systems are entering a new realm of operations. Large amounts of variable generation tax our ability to reliably operate the system. Couple this with a greater reliance on the electricity network to serve consumer demand that is likely to rise significantly even as we drive for greater efficiency. Trade-offs between energy and environmental needs will be constantly negotiated, while a reliable supply of electricity needs even greater assurance in a world where threats of disruption have risen. Smart grid capabilities are being proposed to help address the challenges confronting system operations. This paper reviews the impact of smart grid functionality on transforming power system operations. It explores models for distributed energy resources (DER – generation, storage, and load) that are appearing on the system. It reviews the evolving nature of electricity markets to deal with this complexity and a change of emphasis on signals from these markets to affect power system control. Smart grid capabilities will also impact reliable operations, while cyber security issues must be addressed as a culture change that influences all system design, implementation, and maintenance. Lastly, the paper explores significant questions for further research and the need for a simulation environment that supports such investigation and informs deployments to mitigate operational issues as they arise.

Widergren, Steven E.; Kirkham, Harold

2010-04-28T23:59:59.000Z

249

Grid Integration of Robotic Telescopes  

E-Print Network [OSTI]

Robotic telescopes and grid technology have made significant progress in recent years. Both innovations offer important advantages over conventional technologies, particularly in combination with one another. Here, we introduce robotic telescopes used by the Astrophysical Institute Potsdam as ideal instruments for building a robotic telescope network. We also discuss the grid architecture and protocols facilitating the network integration that is being developed by the German AstroGrid-D project. Finally, we present three user interfaces employed for this purpose.

F. Breitling; T. Granzer; H. Enke

2009-03-23T23:59:59.000Z

250

Grid-based Production  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor'sshortGeothermalGoGreenServices Grid

251

Building the Distribution Grid  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd:June 2015 < prevBuilding the Distribution Grid of the Future

252

Sharing Smart Grid Experiences  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBi (2)Sharing Smart Grid Experiences through Performance Feedback

253

National Grid Energy Efficiency Programs  

Broader source: Energy.gov [DOE]

Presentation covers the National Grid Energy Efficiency programs and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

254

Smart-Grid Security Issues  

SciTech Connect (OSTI)

TITLE: Smart-Grid Security Issues (Editorial Material, English) IEEE SECURITY & PRIVACY 8 (1). JAN-FEB 2010. p.81-85 IEEE COMPUTER SOC, LOS ALAMITOS

Khurana, Himanshu; Hadley, Mark D.; Lu, Ning; Frincke, Deborah A.

2010-01-29T23:59:59.000Z

255

Smart Grid Data Integrity Attack  

E-Print Network [OSTI]

Against Data Injection Attacks on Power Grids”, IEEER. Thomas, and L. Tong, “Malicious Data Attacks on SmartState Estimation: Attack Strategies and Countermeasures,”

Poolla, Kameshwar

2012-01-01T23:59:59.000Z

256

2014 Modern Power Grid Video  

SciTech Connect (OSTI)

A video from NETL that describes the details of a modern power grid and how it can help our nation save on energy costs.

None

2014-06-02T23:59:59.000Z

257

2014 Modern Power Grid Video  

ScienceCinema (OSTI)

A video from NETL that describes the details of a modern power grid and how it can help our nation save on energy costs.

None

2014-07-22T23:59:59.000Z

258

LED Lighting Off the Grid  

Energy Savers [EERE]

D. & Kammen, D. M. Decentralized energy systems for clean electricity access. Nature Climate Change accepted, in press, (2015). Off-Grid Status Quo : Fuel Based Lighting...

259

Environmental Impacts of Smart Grid  

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

and distribution TOU Time of use UBC Unburned hydrocarbon UNDEERC University of North Dakota Energy and Environmental Research Center V2G Vehicle to grid Environmental Impacts of...

260

National Grid Energy Efficiency Plans  

Broader source: Energy.gov [DOE]

Presentation covers the National Grid Energy Efficiency plans and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

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


261

Grid Storage and the Energy Frontier Research Centers | Department...  

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

Grid Storage and the Energy Frontier Research Centers Grid Storage and the Energy Frontier Research Centers DOE: Grid Storage and the Energy Frontier Research Centers Grid Storage...

262

Feedback" An Article for Smart Grid News The Smart Grid Transition...  

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

Sharing Smart Grid Experiences through Performance Feedback" An Article for Smart Grid News The Smart Grid Transition-Getting Started We are on the ground floor of a Smart Grid...

263

Enhancing Power Grid Stability through Analytics  

E-Print Network [OSTI]

the "Smart" Grid? · Premise #1: the grid has long been pretty smart (Edison, Tesla, Steinmetz et al were of Vermont Seminar October 23, 2013 3 What Drives the "Smart" Grid? · Premise #2: As well operated as grid of Vermont Seminar October 23, 2013 4 What Drives the "Smart" Grid? · Premise #3: new technology is providing

Lakoba, Taras I.

264

Smart Grid Enabled EVSE  

SciTech Connect (OSTI)

The combined team of GE Global Research, Federal Express, National Renewable Energy Laboratory, and Consolidated Edison has successfully achieved the established goals contained within the Department of Energy’s Smart Grid Capable Electric Vehicle Supply Equipment funding opportunity. The final program product, shown charging two vehicles in Figure 1, reduces by nearly 50% the total installed system cost of the electric vehicle supply equipment (EVSE) as well as enabling a host of new Smart Grid enabled features. These include bi-directional communications, load control, utility message exchange and transaction management information. Using the new charging system, Utilities or energy service providers will now be able to monitor transportation related electrical loads on their distribution networks, send load control commands or preferences to individual systems, and then see measured responses. Installation owners will be able to authorize usage of the stations, monitor operations, and optimally control their electricity consumption. These features and cost reductions have been developed through a total system design solution.

None, None

2014-10-15T23:59:59.000Z

265

International Journal of Smart Grid and Clean Energy Smart Grid Security: Threats, Vulnerabilities and Solutions  

E-Print Network [OSTI]

International Journal of Smart Grid and Clean Energy Smart Grid Security: Threats, Vulnerabilities is currently evolving into the smart grid. Smart grid integrates the traditional electrical power grid, controlling and managing the demands of customers. A smart grid is a huge complex network composed of millions

Aloul, Fadi

266

Artificial Intelligence for the Smart Grid  

E-Print Network [OSTI]

Artificial Intelligence for the Smart Grid NICTA is developing technology to automate costs. The Future · Cover more of Smart Grid control (diagnosis, reconfiguration, protection, voltage) products for the Smart Grid. Contact Details: Technical Jussi Rintanen Canberra Research Laboratory Tel

267

Parametrization-independent elliptic surface grid generation  

E-Print Network [OSTI]

The generation of computational grids on surfaces of three-dimensional configurations is an important component of many areas of computational research, both as a boundary grid for volume grid generation or to perform ...

Rasmussen, Britt Bille

2009-01-01T23:59:59.000Z

268

Considering Prefabulous and Almost Off the Grid  

E-Print Network [OSTI]

Prefabulous and Almost Off the Grid Introduction Two recentPrefabulous and Almost Off the Grid by Sheri Koones In herand Almost O?fz‘/Je Grid (Abrams, 2012), Sheri Koones pro?

Grenier, Lotus; Beba, Zoe; Gray, Art

2013-01-01T23:59:59.000Z

269

Smart Grid Status and Metrics Report  

SciTech Connect (OSTI)

To convey progress made in achieving the vision of a smart grid, this report uses a set of six characteristics derived from the National Energy Technology Laboratory Modern Grid Strategy. It measures 21 metrics to provide insight into the grid’s capacity to embody these characteristics. This report looks across a spectrum of smart grid concerns to measure the status of smart grid deployment and impacts.

Balducci, Patrick J.; Weimar, Mark R.; Kirkham, Harold

2014-07-01T23:59:59.000Z

270

The Open Science Grid  

SciTech Connect (OSTI)

The Open Science Grid (OSG) provides a distributed facility where the Consortium members provide guaranteed and opportunistic access to shared computing and storage resources. OSG provides support for and evolution of the infrastructure through activities that cover operations, security, software, troubleshooting, addition of new capabilities, and support for existing and engagement with new communities. The OSG SciDAC-2 project provides specific activities to manage and evolve the distributed infrastructure and support its use. The innovative aspects of the project are the maintenance and performance of a collaborative (shared & common) petascale national facility over tens of autonomous computing sites, for many hundreds of users, transferring terabytes of data a day, executing tens of thousands of jobs a day, and providing robust and usable resources for scientific groups of all types and sizes. More information can be found at the OSG web site: www.opensciencegrid.org.

Pordes, Ruth; /Fermilab; Kramer, Bill; Olson, Doug; / /LBL, Berkeley; Livny, Miron; Roy, Alain; /Wisconsin U., Madison; Avery, Paul; /Florida U.; Blackburn, Kent; /Caltech; Wenaus, Torre; /Brookhaven; Wurthwein, Frank; /UC, San Diego; Gardner, Rob; Wilde, Mike; /Chicago U. /Indiana U.

2007-06-01T23:59:59.000Z

271

From the Grid to the Smart Grid, Topologically  

E-Print Network [OSTI]

The Smart Grid is not just about the digitalization of the Power Grid. In its more visionary acceptation, it is a model of energy management in which the users are engaged in producing energy as well as consuming it, while having information systems fully aware of the energy demand-response of the network and of dynamically varying prices. A natural question is then: to make the Smart Grid a reality will the Distribution Grid have to be updated? We assume a positive answer to the question and we consider the lower layers of Medium and Low Voltage to be the most affected by the change. In our previous work, we have analyzed samples of the Dutch Distribution Grid in our previous work and we have considered possible evolutions of these using synthetic topologies modeled after studies of complex systems in other technological domains in another previous work. In this paper, we take an extra important further step by defining a methodology for evolving any existing physical Power Grid to a good Smart Grid model th...

Pagani, Giuliano Andrea

2013-01-01T23:59:59.000Z

272

Sandia National Laboratories: Distribution Grid Integration  

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

Energy Supply Transformation Needed On February 20, 2013, in DETL, Distribution Grid Integration, Energy, Energy Assurance, Energy Surety, Grid Integration, Infrastructure...

273

Sandia National Laboratories: Distribution Grid Integration  

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

Systems Symposium On April 15, 2014, in Concentrating Solar Power, Distribution Grid Integration, Energy, Facilities, Grid Integration, News, News & Events, Photovoltaic,...

274

Sandia National Laboratories: Distribution Grid Integration  

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

Distribution Grid Integration Recent Sandia Secure, Scalable Microgrid Advanced Controls Research Accomplishments On March 3, 2015, in Capabilities, Distribution Grid Integration,...

275

National Grid (Gas)- Commercial Energy Efficiency Programs  

Broader source: Energy.gov [DOE]

National Grid’s Commercial Energy Efficiency Program provides support services and incentives to commercial customers who install energy efficient natural gas related measures. Prescriptive...

276

EV-Smart Grid Research & Interoperability Activities  

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

isolation chamber w wireless charging test fixture Integrated grid simulation, real-time grid data, and configurable branch circuit for smart charging and energy management...

277

Smart Grid Investment Grant Recipient Information | Department...  

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

Recovery Act SGIG Smart Grid Investment Grant Recipient Information Smart Grid Investment Grant Recipient Information BACKGROUND The Department of Energy's Office of Electricity...

278

Electricity Advisory Committee Smart Grid Subcommittee  

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

Electricity Advisory Committee Smart Grid Subcommittee Update to the 2008 EAC Report Smart Grid: Enabler of the New Energy Economy Report Recommendations May 10, 2011...

279

-1 -0.5 0 0.5 1 Left system with Double-Geodesic control law  

E-Print Network [OSTI]

;#12;#12;#12;#12;#12;#12;#12;#12;-1 -0.5 0 0.5 1 -1 -0.5 0 0.5 1 x (cm) y(cm) Left system with Double-Geodesic control law -1 -0.5 0 0 (cm) y(cm) Right system with Double-Geodesic control law -1 -0.5 0 0.5 1 -1 -0.5 0 0.5 1 x (cm) y with Double-Geodesic control law -1 -0.5 0 0.5 1 -1 -0.5 0 0.5 1 x (cm) y(cm) Left system with Log control law

Murray, Richard M.

280

2244 IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 4, DECEMBER 2013 Modeling and Stochastic Control for  

E-Print Network [OSTI]

2244 IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 4, DECEMBER 2013 Modeling and Stochastic Control simulations coupled with real data measurements are used for performance evaluation and comparison studies is the fundamental tradeoff between costs and quality of services. The advent of "smart grid" will likely advance

Tong, Lang

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Introduction to CamGrid  

E-Print Network [OSTI]

set up: one for users (92 currently registered) and the other for sysadmins. Have a nice web-based utility for viewing job files in realtime on execute hosts. 41 refereed publications to date, (Science, Phys. Rev. Lett., PLOS,…) USERS YOUR GRID... GOD SAVE THE GRID How you can help us help you Pressgang local resources. Why aren’t those laptops/desktops on CamGrid? When applying for grants, please ask for funds to put towards computational resources (~£10k?) Publications, publications...

Calleja, Mark

2008-06-26T23:59:59.000Z

282

National Smart Water Grid  

SciTech Connect (OSTI)

The United States repeatedly experiences floods along the Midwest's large rivers and droughts in the arid Western States that cause traumatic environmental conditions with huge economic impact. With an integrated approach and solution these problems can be alleviated. Tapping into the Mississippi River and its tributaries, the world's third largest fresh water river system, during flood events will mitigate the damage of flooding and provide a new source of fresh water to the Western States. The trend of increased flooding on the Midwest's large rivers is supported by a growing body of scientific literature. The Colorado River Basin and the western states are experiencing a protracted multi-year drought. Fresh water can be pumped via pipelines from areas of overabundance/flood to areas of drought or high demand. Calculations document 10 to 60 million acre-feet (maf) of fresh water per flood event can be captured from the Midwest's Rivers and pumped via pipelines to the Colorado River and introduced upstream of Lake Powell, Utah, to destinations near Denver, Colorado, and used in areas along the pipelines. Water users of the Colorado River include the cities in southern Nevada, southern California, northern Arizona, Colorado, Utah, Indian Tribes, and Mexico. The proposed start and end points, and routes of the pipelines are documented, including information on right-of-ways necessary for state and federal permits. A National Smart Water Grid{trademark} (NSWG) Project will create thousands of new jobs for construction, operation, and maintenance and save billions in drought and flood damage reparations tax dollars. The socio-economic benefits of NWSG include decreased flooding in the Midwest; increased agriculture, and recreation and tourism; improved national security, transportation, and fishery and wildlife habitats; mitigated regional climate change and global warming such as increased carbon capture; decreased salinity in Colorado River water crossing the US-Mexico border; and decreased eutrophication (excessive plant growth and decay) in the Gulf of Mexico to name a few. The National Smart Water Grid{trademark} will pay for itself in a single major flood event.

Beaulieu, R A

2009-07-13T23:59:59.000Z

283

YNOGK: A NEW PUBLIC CODE FOR CALCULATING NULL GEODESICS IN THE KERR SPACETIME  

SciTech Connect (OSTI)

Following the work of Dexter and Agol, we present a new public code for the fast calculation of null geodesics in the Kerr spacetime. Using Weierstrass's and Jacobi's elliptic functions, we express all coordinates and affine parameters as analytical and numerical functions of a parameter p, which is an integral value along the geodesic. This is the main difference between our code and previous similar ones. The advantage of this treatment is that the information about the turning points does not need to be specified in advance by the user, and many applications such as imaging, the calculation of line profiles, and the observer-emitter problem, become root-finding problems. All elliptic integrations are computed by Carlson's elliptic integral method as in Dexter and Agol, which guarantees the fast computational speed of our code. The formulae to compute the constants of motion given by Cunningham and Bardeen have been extended, which allow one to readily handle situations in which the emitter or the observer has an arbitrary distance from, and motion state with respect to, the central compact object. The validation of the code has been extensively tested through applications to toy problems from the literature. The source FORTRAN code is freely available for download on our Web site http://www1.ynao.ac.cn/{approx}yangxl/yxl.html.

Yang Xiaolin; Wang Jiancheng, E-mail: yangxl@ynao.ac.cn [National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 (China)

2013-07-01T23:59:59.000Z

284

Smart Grid e-Forum | Department of Energy  

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

Federal Smart Grid Task Force Smart Grid e-Forum Smart Grid e-Forum DOE conducted a series of Smart Grid E-Forums to discuss various issues surrounding Smart Grid including...

285

Grid Pricing of Fed Cattle  

E-Print Network [OSTI]

There are several value-based fed cattle pricing systems, including formula pricing, price grids and alliances. This publication describes the different cattle pricing methods and helps you decide which is best for you....

Schroeder, Ted C.; Hogan, Robert J.; Anderson, David P.

2009-03-02T23:59:59.000Z

286

Introduction to FireGrid   

E-Print Network [OSTI]

FireGrid is an ambitious and innovative project, seeking to develop the technology to support a new way of managing emergency response in the modern built environment. Specific novel aspects include the integration of ...

Welch, Stephen; Usmani, Asif; Upadhyay, Rochan; Berry, Dave; Potter, Stephen; Torero, Jose L

2007-11-14T23:59:59.000Z

287

Brookhaven National Laboratory Smarter Grid Centers  

E-Print Network [OSTI]

(Smart Grid Innovation Center) #12;3 Smart Grid enables 21st Century Economy and Creates Need for SGRID3 Research &Technology (AERTC) Center is designed to nurture creation of new technologies for Smart Grid - New - Development of SGIC (Smart Grid Innovation Center) at SBU - New -Development of AEGIS (Advanced

Homes, Christopher C.

288

Grid Architecture Release 2.3  

E-Print Network [OSTI]

Draft Grid Architecture Release 2.3 November 2014 Draft #12;Grid Architecture Release 2.3 November..................................................................................................... 2.1 3.0 Brief Introduction to Grid Architecture........................................................................................ 3.2 3.1 How Grid Architecture Can Be Used

289

Benchmarking Grid Information Systems Laurence Field1  

E-Print Network [OSTI]

Benchmarking Grid Information Systems Laurence Field1 and Rizos Sakellariou2 1 CERN, Geneva. Grid information systems play a central role in today's pro- duction Grid infrastructures, enabling the discovery of a range of in- formation about the Grid services that exist in an infrastructure. As the number

Sakellariou, Rizos

290

Evidential Grids Information Management in Dynamic Environments  

E-Print Network [OSTI]

of Compiègne CNRS Heudiasyc UMR 7253, France Email: surname.name@utc.fr Abstract--An occupancy grid map conditions. The perception strategy involves map and scan grids [9], [10]. Indeed, an instantaneous scan grid-detections. The map grid acts as a filter that accumulate information and allows to detect moving objects. In dynamic

Paris-Sud XI, Université de

291

Networks, smart grids: new model for synchronization  

E-Print Network [OSTI]

- 1 - Networks, smart grids: new model for synchronization May 21, 2013 Networks of individual scenarios and in smart grid applications. "Smart grid" refers to technology to modernize utility electricity in a volatile smart grid scenario that included fluctuating loads with random power demand, renewable energy

292

Smart Wire Grid: Resisting Expectations  

ScienceCinema (OSTI)

Smart Wire Grid's DSR technology (Discrete Series Reactor) can be quickly deployed on electrical transmission lines to create intelligent mesh networks capable of quickly rerouting electricity to get power where and when it's needed the most. With their recent ARPA-E funding, Smart Wire Grid has been able to move from prototype and field testing to building out a US manufacturing operation in just under a year.

Ramsay, Stewart; Lowe, DeJim

2014-04-09T23:59:59.000Z

293

Smart Wire Grid: Resisting Expectations  

SciTech Connect (OSTI)

Smart Wire Grid's DSR technology (Discrete Series Reactor) can be quickly deployed on electrical transmission lines to create intelligent mesh networks capable of quickly rerouting electricity to get power where and when it's needed the most. With their recent ARPA-E funding, Smart Wire Grid has been able to move from prototype and field testing to building out a US manufacturing operation in just under a year.

Ramsay, Stewart; Lowe, DeJim

2014-03-03T23:59:59.000Z

294

Reinventing Batteries for Grid Storage  

SciTech Connect (OSTI)

The City University of New York's Energy Institute, with the help of ARPA-E funding, is creating safe, low cost, rechargeable, long lifecycle batteries that could be used as modular distributed storage for the electrical grid. The batteries could be used at the building level or the utility level to offer benefits such as capture of renewable energy, peak shaving and microgridding, for a safer, cheaper, and more secure electrical grid.

Banerjee, Sanjoy

2012-01-01T23:59:59.000Z

295

Reinventing Batteries for Grid Storage  

ScienceCinema (OSTI)

The City University of New York's Energy Institute, with the help of ARPA-E funding, is creating safe, low cost, rechargeable, long lifecycle batteries that could be used as modular distributed storage for the electrical grid. The batteries could be used at the building level or the utility level to offer benefits such as capture of renewable energy, peak shaving and microgridding, for a safer, cheaper, and more secure electrical grid.

Banerjee, Sanjoy

2013-05-29T23:59:59.000Z

296

Smart Grid Information Security (IS) Functional Requirement  

E-Print Network [OSTI]

It is important to implement safe smart grid environment to enhance people's lives and livelihoods. This paper provides information on smart grid IS functional requirement by illustrating some discussion points to the sixteen identified requirements. This paper introduces the smart grid potential hazards that can be referred as a triggering factor to improve the system and security of the entire grid. The background of smart information infrastructure and the needs for smart grid IS is described with the adoption of hermeneutic circle as methodology. Grid information technology and security-s session discusses that grid provides the chance of a simple and transparent access to different information sources. In addition, the transformation between traditional versus smart grid networking trend and the IS importance on the communication field reflects the criticality of grid IS functional requirement identification is introduces. The smart grid IS functional requirements described in this paper are general and ...

Ling, Amy Poh Ai

2011-01-01T23:59:59.000Z

297

A Core Grid Ontology for the Semantic Grid Wei Xing Marios D. Dikaiakos  

E-Print Network [OSTI]

A Core Grid Ontology for the Semantic Grid Wei Xing Marios D. Dikaiakos Department of Computer, we propose a Core Grid Ontology (CGO) that defines fundamental Grid-specific concepts, and the re- lationships between them. One of the key goals is to make this Core Grid Ontology general enough and easily

Pallis, George

298

Modeling and Grid impedance Variation Analysis of Parallel Connected Grid Connected Inverter  

E-Print Network [OSTI]

Modeling and Grid impedance Variation Analysis of Parallel Connected Grid Connected Inverter based in the same grid interface conditions by means of impedance-based analysis and modeling. Unlike the single grid connected inverter, it is found that multiple parallel connected inverters and grid impedance can

Bak, Claus Leth

299

What is a Grid? Grid Today, AUGUST 12, 2002: VOL. 1 NO. 9  

E-Print Network [OSTI]

What is a Grid? Grid Today, AUGUST 12, 2002: VOL. 1 NO. 9 (http://www.gridtoday.com/02/0812/020812.html) I would like to provide perspective on the question of what is a Grid - a perspective derived from several years of building production Grids. For a significant segment of the Grid community, most

300

Smart Grid: Opportunities and Challenges Toward a Stronger and Smarter Grid  

E-Print Network [OSTI]

Smart Grid: Opportunities and Challenges Toward a Stronger and Smarter Grid S. Massoud Amin, D electrical energy infrastructure ­ Transforming the Network into a Smart Grid ­ Developing an Expanded be reproduced in any form without prior authorization. Enabling a Stronger and Smarter Grid ·Smart Grid

Amin, S. Massoud

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Pacific Northwest Smart GridPacific Northwest Smart Grid Demonstration ProjectDemonstration Project  

E-Print Network [OSTI]

Pacific Northwest Smart GridPacific Northwest Smart Grid Demonstration ProjectDemonstration Project Northwest Power and Conservation Council Lee Hall, BPA Smart Grid Program Manager Tracy Yount, Battelle Electric Grid Research Manager April 14, 2010 PNWD-SA-8921 #12;Agenda · Smart Grid ­ What is it? · PNW

302

EconoGrid: A detailed Simulation Model of a Standards-based Grid Compute Economy  

E-Print Network [OSTI]

EconoGrid: A detailed Simulation Model of a Standards-based Grid Compute Economy EconoGrid is a detailed simulation model, implemented in SLX1 , of a grid compute economy that implements selected of users. In a grid compute economy, computing resources are sold to users in a market where price

303

GRID-Launcher v.1.0  

E-Print Network [OSTI]

GRID-launcher-1.0 was built within the VO-Tech framework, as a software interface between the UK-ASTROGRID and a generic GRID infrastructures in order to allow any ASTROGRID user to launch on the GRID computing intensive tasks from the ASTROGRID Workbench or Desktop. Even though of general application, so far the Grid-Launcher has been tested on a few selected softwares (VONeural-MLP, VONeural-SVM, Sextractor and SWARP) and on the SCOPE-GRID.

N. Deniskina; M. Brescia; S. Cavuoti; G. d'Angelo; O. Laurino; G. Longo

2008-06-06T23:59:59.000Z

304

The Vermont-Sandia Smart Grid Partnership Powering the Future: The Vermont Smart Grid and Beyond  

E-Print Network [OSTI]

The Vermont-Sandia Smart Grid Partnership Powering the Future: The Vermont Smart Grid and Beyond BURLINGTON SHERATON HOTEL & CONFERENCE CENTER MAY Laboratories 9:10-10:15 a.m. Opening Plenary: The Vermont-Sandia Smart Grid

Hayden, Nancy J.

305

Coordinate families for the Schwarzschild geometry based on radial timelike geodesics  

E-Print Network [OSTI]

We explore the connections between various coordinate systems associated with observers moving inwardly along radial geodesics in the Schwarzschild geometry. Painlev\\'e-Gullstrand (PG) time is adapted to freely falling observers dropped from rest from infinity; Lake-Martel-Poisson (LMP) time coordinates are adapted to observers who start at infinity with non-zero initial inward velocity; Gautreau-Hoffmann (GH) time coordinates are adapted to observers dropped from rest from a finite distance from the black hole horizon. We construct from these an LMP family and a proper-time family of time coordinates, the intersection of which is PG time. We demonstrate that these coordinate families are distinct, but related, one-parameter generalizations of PG time, and show linkage to Lema\\^itre coordinates as well.

Tehani K. Finch

2014-12-23T23:59:59.000Z

306

A Class of Integrable Geodesic Flows on the Symplectic Group and the Symmetric Matrices  

E-Print Network [OSTI]

This paper shows that the left-invariant geodesic flow on the symplectic group relative to the Frobenius metric is an integrable system that is not contained in the Mishchenko-Fomenko class of rigid body metrics. This system may be expressed as a flow on symmetric matrices and is bi-Hamiltonian. This analysis is extended to cover flows on symmetric matrices when an isomorphism with the symplectic Lie algebra does not hold. The two Poisson structures associated with this system, including an analysis of its Casimirs, are completely analyzed. Since the system integrals are not generated by its Casimirs it is shown that the nature of integrability is fundamentally different from that exhibited in the Mischenko-Fomenko setting.

Anthony M. Bloch; Arieh Iserles; Jerrold E. Marsden; Tudor S. Ratiu

2006-04-19T23:59:59.000Z

307

Geodesic Transport Barriers in Jupiter's Atmosphere: A Video-Based Analysis  

E-Print Network [OSTI]

Jupiter's zonal jets and Great Red Spot are well known from still images. Yet the planet's atmosphere is highly unsteady, which suggests that the actual material transport barriers delineating its main features should be time-dependent. Rare video footages of Jupiter's clouds provide an opportunity to verify this expectation from optically reconstructed velocity fields. Available videos, however, provide short-time and temporally aperiodic velocity fields that defy classical dynamical systems analyses focused on asymptotic features. To this end, we use here the recent theory of geodesic transport barriers to uncover finite-time mixing barriers in the wind field extracted from a video captured by NASA's Cassini space mission. More broadly, the approach described here provides a systematic and frame-invariant way to extract dynamic coherent structures from time-resolved remote observations of unsteady continua.

Alireza Hadjighasem; George Haller

2014-08-24T23:59:59.000Z

308

DRAFT NISTIR 7628 Revision 1 Guidelines for Smart Grid Cybersecurity  

E-Print Network [OSTI]

DRAFT NISTIR 7628 Revision 1 Guidelines for Smart Grid Cybersecurity: Vol. 2, Privacy and the Smart Grid The Smart Grid Interoperability Panel ­ Smart Grid Cybersecurity Committee #12;DRAFT NISTIR 7628 Revision 1 Guidelines for Smart Grid Cybersecurity: Vol. 2, Privacy and the Smart Grid The Smart Grid

309

Instrumentation, Controls, and Human-Machine Interface Technology Development Roadmap in Support of Grid Appropriate Reactors  

SciTech Connect (OSTI)

Grid Appropriate Reactors (GARs) are a component of the U.S. Department of Energy s (DOE s) Global Nuclear Energy Partnership (GNEP) program. GARs have smaller output power (<~600 MWe), than those intended for deployment on large, tightly coupled grids. This smaller size is important in avoiding grid destabilization, which can result from having a large fraction of a grid s electrical generation supplied by a single source. GARs are envisioned to be deployed worldwide often in locations without extensive nuclear power experience. DOE recently sponsored the creation of an Instrumentation, Controls, and Human-Machine Interface (ICHMI) technology development roadmap emphasizing the specific characteristics of GARs [1]. This roadmapping effort builds upon and focuses the recently developed, more general nuclear energy ICHMI technology development roadmap [2]. The combination of the smaller plant size, smaller grids, and deployment in locations without extensive prior nuclear power experience presents particular infrastructure, regulation, design, operational, and safeguards challenges for effective GAR deployment. ICHMI technologies are central to efficient GAR operation and as such are a dimension of each of these challenges. Further, while the particular ICHMI technologies to be developed would be useful at larger power plants, they are not high-priority development items at the larger plants. For example, grid transient resilience would be a useful feature for any reactor/grid combination and indeed would have limited some recent blackout events. However, most large reactors have limited passive cooling features. Large plants with active safety response features will likely preserve trip preferential grid transient response. This contrasts sharply with GARs featuring passive shutdown cooling, which can safely support grid stability during large grid transients. ICHMI technologies ranging from alternative control algorithms to simplified human-interface system designs are key to enabling GARs to respond properly and thereby stabilize the grid during transients.

Holcomb, David Eugene [ORNL] [ORNL; Upadhyaya, Belle R. [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Kisner, Roger A [ORNL] [ORNL; O'Hara, John [Brookhaven National Laboratory (BNL)] [Brookhaven National Laboratory (BNL); Quinn, Edward L. [Longenecker & Associates] [Longenecker & Associates; Miller, Don W. [Ohio State University] [Ohio State University

2009-01-01T23:59:59.000Z

310

Geodesic dynamo chaotic flows and non-Anosov maps in twisted magnetic flux tubes  

E-Print Network [OSTI]

Recently Tang and Boozer [{\\textbf{Phys. Plasmas (2000)}}], have investigated the anisotropies in magnetic field dynamo evolution, from local Lyapunov exponents, giving rise to a metric tensor, in the Alfven twist in magnetic flux tubes (MFTs). Thiffeault and Boozer [\\textbf{Chaos}(2001)] have investigated the how the vanishing of Riemann curvature constrained the Lyapunov exponential stretching of chaotic flows. In this paper, Tang-Boozer-Thiffeault differential geometric framework is used to investigate effects of twisted magnetic flux tube filled with helical chaotic flows on the Riemann curvature tensor. When Frenet torsion is positive, the Riemann curvature is unstable, while the negative torsion induces an stability when time $t\\to{\\infty}$. This enhances the dynamo action inside the MFTs. The Riemann metric, depends on the radial random flows along the poloidal and toroidal directions. The Anosov flows has been applied by Arnold, Zeldovich, Ruzmaikin and Sokoloff [\\textbf{JETP (1982)}] to build a uniformly stretched dynamo flow solution, based on Arnold's Cat Map. It is easy to show that when the random radial flow vanishes, the magnetic field vanishes, since the exponential Lyapunov stretches vanishes. This is an example of the application of the Vishik's anti-fast dynamo theorem in the magnetic flux tubes. Geodesic flows of both Arnold and twisted MFT dynamos are investigated. It is shown that a constant random radial flow can be obtained from the geodesic equation. Throughout the paper one assumes, the reasonable plasma astrophysical hypothesis of the weak torsion. Pseudo-Anosov dynamo flows and maps have also been addressed by Gilbert [\\textbf{Proc Roy Soc A London (1993)}

Garcia de Andrade

2008-11-21T23:59:59.000Z

311

POWER GRID RELIABILITY AND SECURITY  

SciTech Connect (OSTI)

This project has led to the development of a real-time simulation platform for electric power grids called Grid Simulator or GridSim for simulating the dynamic and information network interactions of large- scale power systems. The platform consists of physical models of power system components including synchronous generators, loads and control, which are simulated using a modified commercial power simulator namely Transient Stability Analysis Tool (TSAT) [1] together with data cleanup components, as well as an emulated substation level and wide-area power analysis components. The platform also includes realistic representations of communication network middleware that can emulate the real-time information flow back and forth between substations and control centers in wide-area power systems. The platform has been validated on a realistic 6000-bus model of the western American power system. The simulator GridSim developed in this project is the first of its kind in its ability to simulate real-time response of large-scale power grids, and serves as a cost effective real-time stability and control simulation platform for power industry.

Bose, Anjan; Venkatasubramanian, Vaithianathan; Hauser, Carl; Bakken, David; Anderson, David; Zhao, Chuanlin; Liu, Dong; Yang, Tao; Meng, Ming; Zhang, Lin; Ning, Jiawei; Tashman, Zaid

2014-09-30T23:59:59.000Z

312

Mastering Uncertainty and Risk at Multiple Time Scales in the Future Electrical Grid  

SciTech Connect (OSTI)

Today's electrical grids enjoy a relatively clean separation of spatio-temporal scales yielding a compartmentalization of grid design, optimization, control and risk assessment allowing for the use of conventional mathematical tools within each area. In contrast, the future grid will incorporate time-intermittent renewable generation, operate via faster electrical markets, and tap the latent control capability at finer grid modeling scales; creating a fundamentally new set of couplings across spatiotemporal scales and requiring revolutionary advances in mathematics techniques to bridge these scales. One example is found in decade-scale grid expansion planning in which today's algorithms assume accurate load forecasts and well-controlled generation. Incorporating intermittent renewable generation creates fluctuating network flows at the hourly time scale, inherently linking the ability of a transmission line to deliver electrical power to hourly operational decisions. New operations-based planning algorithms are required, creating new mathematical challenges. Spatio-temporal scales are also crossed when the future grid's minute-scale fluctuations in network flows (due to intermittent generation) create a disordered state upon which second-scale transient grid dynamics propagate effectively invalidating today's on-line dynamic stability analyses. Addressing this challenge requires new on-line algorithms that use large data streams from new grid sensing technologies to physically aggregate across many spatial scales to create responsive, data-driven dynamic models. Here, we sketch the mathematical foundations of these problems and potential solutions.

Chertkov, Michael [Los Alamos National Laboratory; Bent, Russell W. [Los Alamos National Laboratory; Backhaus, Scott N. [Los Alamos National Laboratory

2012-07-10T23:59:59.000Z

313

EcoGrid EU (Smart Grid Project) | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump37. It is classified asThisEcoGrid EU (Smart Grid Project) Jump to:

314

Computational Needs for the Next Generation Electric Grid Proceedings  

E-Print Network [OSTI]

data  integration  for  Smart  Grid”,  B 2010  3rd  IEEE simulation  integration,  the  next generation smart grid the Smart Grid vision requires the efficient integration of 

Birman, Kenneth

2012-01-01T23:59:59.000Z

315

Smart Grid Week: Hurricane Season and the Department's Efforts...  

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

Season and the Department's Efforts to Make the Grid More Resilient to Power Outages Smart Grid Week: Hurricane Season and the Department's Efforts to Make the Grid More...

316

Enhancing the Smart Grid: Integrating Clean Distributed and Renewable...  

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

Enhancing the Smart Grid: Integrating Clean Distributed and Renewable Generation Enhancing the Smart Grid: Integrating Clean Distributed and Renewable Generation Imagine a grid...

317

EV-Smart Grid Research & Interoperability Activities 2014 DOE...  

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

- Codes & Standards Support, Grid Connectivity R&D, International Cooperation and EV-Smart Grid Interoperability Center (funding began in FY 2013) Grid Integration * PEV J1772...

318

Okaloosa Gas District Smart Grid RFI: Addressing Policy and Logistical...  

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

Okaloosa Gas District Smart Grid RFI: Addressing Policy and Logistical Challenges to Smart Grid Implementation Okaloosa Gas District Smart Grid RFI: Addressing Policy and...

319

Sandia National Laboratories: How a Grid Manager Meets Demand...  

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

to meet peak loads. Comments are closed. Advanced Electric Systems Integrating Renewable Energy into the Electric Grid Why is Grid Synchronization Important? How a Grid Manager...

320

Natural Gas Industry Comments on Smart Grid RFI: Addressing Policy...  

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

Natural Gas Industry Comments on Smart Grid RFI: Addressing Policy and Logistical Challenges to Smart Grid Natural Gas Industry Comments on Smart Grid RFI: Addressing Policy and...

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


321

Convectively cooled electrical grid structure  

DOE Patents [OSTI]

Undesirable distortions of electrical grid conductors from thermal cycling are minimized and related problems such as unwanted thermionic emission and structural failure from overheating are avoided by providing for a flow of fluid coolant within each conductor. The conductors are secured at each end to separate flexible support elements which accommodate to individual longitudinal expansion and contraction of each conductor while resisting lateral displacements, the coolant flow preferably being directed into and out of each conductor through passages in the flexible support elements. The grid may have a modular or divided construction which facilitates manufacture and repairs.

Paterson, J.A.; Koehler, G.W.

1980-11-10T23:59:59.000Z

322

GENI: Grid Hardware and Software  

SciTech Connect (OSTI)

GENI Project: The 15 projects in ARPA-E’s GENI program, short for “Green Electricity Network Integration,” aim to modernize the way electricity is transmitted in the U.S. through advances in hardware and software for the electric grid. These advances will improve the efficiency and reliability of electricity transmission, increase the amount of renewable energy the grid can utilize, and provide energy suppliers and consumers with greater control over their power flows in order to better manage peak power demand and cost.

None

2012-01-09T23:59:59.000Z

323

Grid Technologies | GE Global Research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor'sshortGeothermalGoGreenServices Grid Software andGrid

324

FermiGrid - experience and future plans  

SciTech Connect (OSTI)

Fermilab supports a scientific program that includes experiments and scientists located across the globe. In order to better serve this community, Fermilab has placed its production computer resources in a Campus Grid infrastructure called 'FermiGrid'. The FermiGrid infrastructure allows the large experiments at Fermilab to have priority access to their own resources, enables sharing of these resources in an opportunistic fashion, and movement of work (jobs, data) between the Campus Grid and National Grids such as Open Science Grid and the WLCG. FermiGrid resources support multiple Virtual Organizations (VOs), including VOs from the Open Science Grid (OSG), EGEE and the Worldwide LHC Computing Grid Collaboration (WLCG). Fermilab also makes leading contributions to the Open Science Grid in the areas of accounting, batch computing, grid security, job management, resource selection, site infrastructure, storage management, and VO services. Through the FermiGrid interfaces, authenticated and authorized VOs and individuals may access our core grid services, the 10,000+ Fermilab resident CPUs, near-petabyte (including CMS) online disk pools and the multi-petabyte Fermilab Mass Storage System. These core grid services include a site wide Globus gatekeeper, VO management services for several VOs, Fermilab site authorization services, grid user mapping services, as well as job accounting and monitoring, resource selection and data movement services. Access to these services is via standard and well-supported grid interfaces. We will report on the user experience of using the FermiGrid campus infrastructure interfaced to a national cyberinfrastructure--the successes and the problems.

Chadwick, K.; Berman, E.; Canal, P.; Hesselroth, T.; Garzoglio, G.; Levshina, T.; Sergeev, V.; Sfiligoi, I.; Timm, S.; Yocum, D.; /Fermilab

2007-09-01T23:59:59.000Z

325

GridMat: Matlab Toolbox for GridLAB-D to Analyse Grid Impact and Validate Residential Microgrid Level  

E-Print Network [OSTI]

GridMat: Matlab Toolbox for GridLAB-D to Analyse Grid Impact and Validate Residential Microgrid.alfaruque, fahourai} @ uci.edu Abstract-- Residential microgrid has the capability to participate in the distribution level) advanced control algorithms need to be developed and validated for such residential microgrids

Al Faruque, Mohammad Abdullah

326

Cybersecurity and the Smarter Grid (2014)  

Broader source: Energy.gov [DOE]

An article by OE’s Carol Hawk and Akhlesh Kaushiva in The Electricity Journal discusses cybersecurity for the power grid and how DOE and the energy sector are partnering to keep the smart grid reliable and secure.

327

Principal Characteristics of a Modern Grid  

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

where metrics are needed to monitor progress. 11 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y The Grid - Today vs. Tomorrow...

328

Assistant Secretary Hoffman Discusses Grid Modernization with...  

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

Assistant Secretary Hoffman Discusses Grid Modernization with the New York Times and E&E TV Assistant Secretary Hoffman Discusses Grid Modernization with the New York Times and E&E...

329

Principal Characteristics of a Modern Grid  

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

Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Joe Miller, Modern Grid Strategy Team Lead Grid Econ - The Economics of a Smarter...

330

Vids4Grids- Controls, Connectors & Surge Protectors  

Broader source: Energy.gov [DOE]

Modernizing our grid means exciting new devices in the power sector. Find out how new lighting controls, connectors and surge protection will bring out electric grid to the next level.

331

INFOGRAPHIC: Understanding the Grid | Department of Energy  

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

the Grid November 17, 2014 - 2:05pm Addthis Our GridWeek infographic shows how electricity is generated, transmitted and distributed for use in our homes. | Graphic by

332

GridWise Alliance | Department of Energy  

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

Challenges Re: NBP RFI: Communications Requirements 2010 U.S. Smart Grid Vendor Ecosystem Report on the companies and market dynamics shaping the current U.S. smart grid landscape...

333

Past and future of grid shell structures  

E-Print Network [OSTI]

Because of their original organic shape and the column free space that they provide, the design of grid shell structures challenges architects and structural engineers in more than one way. Very few grid shell building ...

Paoli, Céline (Céline Aude)

2007-01-01T23:59:59.000Z

334

Grid Applications Dr Gabrielle Allen  

E-Print Network [OSTI]

of chemistry and other codes (www.gridchem.org) ! Petroleum Engineering " UCoMS: Grid-enabling reservoir ! Requires incredible mix of technologies & expertise! ! Many scientific/engineering components " Physics? Finite elements? " Elliptic equations: multigrid, Krylov subspace,... " Mesh refinement ! Many different

Allen, Gabrielle

335

Grid Logging: Best Practices Guide  

SciTech Connect (OSTI)

The purpose of this document is to help developers of Grid middleware and application software generate log files that will be useful to Grid administrators, users, developers and Grid middleware itself. Currently, most of the currently generated log files are only useful to the author of the program. Good logging practices are instrumental to performance analysis, problem diagnosis, and security auditing tasks such as incident tracing and damage assessment. This document does not discuss the issue of a logging API. It is assumed that a standard log API such as syslog (C), log4j (Java), or logger (Python) is being used. Other custom logging API or even printf could be used. The key point is that the logs must contain the required information in the required format. At a high level of abstraction, the best practices for Grid logging are: (1) Consistently structured, typed, log events; (2) A standard high-resolution timestamp; (3) Use of logging levels and categories to separate logs by detail and purpose; (4) Consistent use of global and local identifiers; and (5) Use of some regular, newline-delimited ASCII text format. The rest of this document describes each of these recommendations in detail.

Tierney, Brian L; Tierney, Brian L; Gunter, Dan

2008-04-01T23:59:59.000Z

336

Articles about Grid Integration and Transmission  

Broader source: Energy.gov [DOE]

Stories about grid integration and transmission featured by the U.S. Department of Energy (DOE) Wind Program.

337

Embodied Energy and Off-Grid Lighting  

E-Print Network [OSTI]

as a point of comparison with LED lighting product embodieda fairer comparison between off- grid LED lighting and other

Alstone, Peter

2012-01-01T23:59:59.000Z

338

Flexible Transmission in the Smart Grid  

E-Print Network [OSTI]

Planning . 102 vi Transmission Line Maintenance Scheduling 103 Just-in-time Transmission 103 Flexible Transmission in the Smart Grid

Hedman, Kory Walter

2010-01-01T23:59:59.000Z

339

Grid Connectivity Research, Development & Demonstration Projects...  

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

Connectivity Research, Development & Demonstration Projects Grid Connectivity Research, Development & Demonstration Projects 2013 DOE Hydrogen and Fuel Cells Program and Vehicle...

340

Grid Technology Overview and Status Geoffrey Fox1,2  

E-Print Network [OSTI]

Grid Technology Overview and Status Geoffrey Fox1,2 , Alex Ho2 , Marlon Pierce1 1 Community Grids...................................................................................................................... 1 2 What is a Grid? ................................................................................................................ 1 3 Grid Technologies and Capabilities

Note: This page contains sample records for the topic "geodesic grid coupled" 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

The Adjustable Grid: A Grid-Based Cursor Control Solution using Speech Recognition  

E-Print Network [OSTI]

The Adjustable Grid: A Grid-Based Cursor Control Solution using Speech Recognition Tarif Haque1 of grid-based cursor control systems using speech recognition have been developed. These systems typically overlay a numbered 3x3 grid on the screen and allow the user to recursively drill the cursor down

Gray, Jeffrey G.

342

Information GRID in the Corporate World Information GRID in the Corporate World  

E-Print Network [OSTI]

Information GRID in the Corporate World Information GRID in the Corporate World .Bogonikolos Zeus Ontology Grid) project, an EU project funded under the Information Society Technologies programme and EAI Tools is discussed. The COG (Corporate Ontology Grid) project addresses the problem of accessing

Paris-Sud XI, Université de

343

GridBank: A Grid Accounting Services Architecture (GASA) for Distributed Systems Sharing and Integration  

E-Print Network [OSTI]

GridBank: A Grid Accounting Services Architecture (GASA) for Distributed Systems Sharing Australia Nedlands, Western Australia, 6009 barmouta@csse.uwa.edu.au Rajkumar Buyya Grid Computing and Distributed Systems (GRIDS) Lab Dept. of Computer Science and Software Engineering The University of Melbourne

Buyya, Rajkumar

344

GRID superscalar and SAGA: forming a high-level and platform-independent Grid  

E-Print Network [OSTI]

GRID superscalar and SAGA: forming a high-level and platform-independent Grid programming Universiteit, Amsterdam, The Netherlands {merzky|kielmann}@cs.vu.nl Abstract. The Simple API for Grid Applications (SAGA), as currently standardized within GGF, aims to provide a simple yet powerful Grid API; its

Kielmann, Thilo

345

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

E-Print Network [OSTI]

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

Jameson, Antony

346

Semantic-based Grid Resource Discovery and its Integration with the Grid Service Broker  

E-Print Network [OSTI]

1 Semantic-based Grid Resource Discovery and its Integration with the Grid Service Broker Thamarai Chromepet, Chennai ­ 600044, India Email : stselvi@annauniv.edu 2 Grid Computing and Distributed Systems :mohanram@cdacb.ernet.in Abstract: This paper addresses the need of semantic component in the grid

Melbourne, University of

347

Using the GridSim Toolkit for Enabling Grid Computing Education Manzur Murshed  

E-Print Network [OSTI]

with (Grid-enabled) resources or their agents using middleware services, map tasks to resources (schedulingUsing the GridSim Toolkit for Enabling Grid Computing Education Manzur Murshed Gippsland School: Grid Simulation; Education; Scheduling; Resource Management. Abstract Numerous research groups

Melbourne, University of

348

EL Program: Smart Grid Program Manager: David Wollman, Smart Grid and Cyber-Physical Systems  

E-Print Network [OSTI]

EL Program: Smart Grid Program Manager: David Wollman, Smart Grid and Cyber-Physical Systems Program Office, Associate Program Manager: Dean Prochaska, Smart Grid and Cyber- Physical Systems Program [updated August 23, 2013] Summary: This program develops and demonstrates smart grid measurement science

349

Smart Grids: Fact or Fiction? A Discussion of Smart Grids in New Zealand  

E-Print Network [OSTI]

May 2013 1 Smart Grids: Fact or Fiction? A Discussion of Smart Grids in New Zealand Dr Allan Miller. Introduction The term `smart grid' is used extensively today, even though there are diverse opinions on what to some extent, and the key questions should not be about what constitutes a `smart grid', but what

Hickman, Mark

350

Smart Grids: Sectores y actividades clave | 1 Smart Grids: Sectores y actividades clave  

E-Print Network [OSTI]

Smart Grids: Sectores y actividades clave | 1 Smart Grids: Sectores y actividades clave INFORME para la Sostenibilidad Energética y Ambiental, FUNSEAM. #12;Smart Grids: Sectores y actividades clave eléctrica y los diferentes sectores que forman la smart grid. 6 Figura 2. Evolución y previsión de

Politècnica de Catalunya, Universitat

351

FUTURE POWER GRID INITIATIVE Scalable Sensor Data  

E-Print Network [OSTI]

of sensors and a large number of applications in future smart grids » Provide a uniformed API to allow applications to access real time power grid data » Facilitate the integration of a large number of diverse management systems » Allow easy integration of a large number of diverse power grid applications

352

February 2002 Grid Scale Oscillations in MICOM  

E-Print Network [OSTI]

are the implications of the grid scale oscillation on ­ Surface Fluxes that drive THC ­ Heat transport ­ MeridionalFebruary 2002 Grid Scale Oscillations in MICOM Balasubramanya T. Nadiga Los Alamos National Model · 3o displaced pole grid. 16 layers · Kraus-Turner Bulk Mixed Layer · Explicit diapycnal

Nadiga, Balasubramanya T. "Balu"

353

Vids 4 Grids: Surge Arresters and Switchgears  

Broader source: Energy.gov [DOE]

A new video series is increasing general public knowledge of the cutting edge jobs in the power sector that are essential to implementing a national clean-energy Smart Grid. Find out how switches and surge arresters are making the grid more reliable -- helping to bring the grid into the 21st century.

354

"Reliability, Resiliency, and Restoration for Smarter Grid  

E-Print Network [OSTI]

"Reliability, Resiliency, and Restoration for Smarter Grid Workshop" Save the Date April 3 and 4 at mohlsen@bnl.gov "The Resilient Smart Grid" to be held at Brookhaven National Laboratory Upton, Long Island://www.bnl.gov/maps/. This is the 5th workshop that BNL is hosting on the Smart Grid. This Workshop will build on the previous

Ohta, Shigemi

355

Grid adaptation for multiscale plasma simulations  

E-Print Network [OSTI]

Grid adaptation for multiscale plasma simulations Gian Luca Delzanno Los Alamos National Laboratory In collaboration with L. Chacon and J.M. Finn #12;delzanno@lanl.gov Outline · Introduction and motivation · Grid tests · New directions · Conclusions #12;delzanno@lanl.gov Outline · Introduction and motivation · Grid

Ito, Atsushi

356

GRID Technologies => `Education' = `Distance Michalis Xenos  

E-Print Network [OSTI]

GRID Technologies => `Education' = `Distance Education' Michalis Xenos 1,2 , Bill Vassiliadis 1 possibilities that Grid technologies create in education, presents current learning paradigms and makes a prediction about the way in which Grid technologies may affect the future of education. The case

Boyer, Edmond

357

Distributing MCell Simulations on the Grid  

E-Print Network [OSTI]

Distributing MCell Simulations on the Grid Henri Casanova casanova@cs.ucsd.edu Tom Bartol The Computational Grid [21] is a promising platform for the deployment of large-scale scientific and engineering that structure, PSAs are particularly well suited to the Grid infrastructure and can be deployed on very large

Sejnowski, Terrence J.

358

Programming, Composing, Deploying for the Grid  

E-Print Network [OSTI]

Programming, Composing, Deploying for the Grid Laurent Baduel, Fran¸coise Baude, Denis Caromel FirstName.LastName@sophia.inria.fr Abstract. Grids raise new challenges in the following way: heterogene objects and components. We especially target Grid computing, but our approach also applies to application

Paris-Sud XI, Université de

359

Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs  

E-Print Network [OSTI]

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

Peraire, Jaime

360

Multiprocessor computer overset grid method and apparatus  

DOE Patents [OSTI]

A multiprocessor computer overset grid method and apparatus comprises associating points in each overset grid with processors and using mapped interpolation transformations to communicate intermediate values between processors assigned base and target points of the interpolation transformations. The method allows a multiprocessor computer to operate with effective load balance on overset grid applications.

Barnette, Daniel W. (Veguita, NM); Ober, Curtis C. (Los Lunas, NM)

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Algorithms in grid classes Ruth Hoffmann  

E-Print Network [OSTI]

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

St Andrews, University of

362

Semantic Information Integration for Smart Grid Applications*  

E-Print Network [OSTI]

Chapter 19 Semantic Information Integration for Smart Grid Applications* Yogesh Simmhan, Qunzhi Zhou, and Viktor Prasanna* Abstract. The Los Angeles Smart Grid Project aims to use informatics that supports 1.4 million customers and a rich ecosystem of Smart Grid applications from users, third party

Prasanna, Viktor K.

363

SMART WATER GRID PLAN B TECHNICAL REPORT  

E-Print Network [OSTI]

SMART WATER GRID PLAN B TECHNICAL REPORT FALL 2014 PREPARED BY: OLGA MARTYUSHEVA IN PARTIAL demand linked to the global population increase. A Smart Water Grid (SWG) is a two-way real time network, and others. A review of the benefits of Smart Water Grids is presented in the context of water conservation

Julien, Pierre Y.

364

Cyber Security in Smart Grid Substations  

E-Print Network [OSTI]

Cyber Security in Smart Grid Substations Thijs Baars Lucas van den Bemd Michail Theuns Robin van.089 3508 TB Utrecht The Netherlands #12;CYBER SECURITY IN SMART GRID SUBSTATIONS Thijs Baars T.Brinkkemper@uu.nl Abstract. This report describes the state of smart grid security in Europe, specifically the Netherlands

Utrecht, Universiteit

365

FUTURE POWER GRID INITIATIVE Next Generation Network  

E-Print Network [OSTI]

FUTURE POWER GRID INITIATIVE Next Generation Network Simulations for Power System Applications MANAGEMENT The Next Generation Network Simulator is a framework for the partitioning, distribution, and run Grid Initiative (FPGI) will deliver next-generation concepts and tools for grid operation and planning

366

Circular geodesics of Bardeen and Ayon-Beato-Garcia regular black-hole and no-horizon spacetimes  

E-Print Network [OSTI]

We study circular geodesic motion of test particles and photons in the Bardeen and Ayon-Beato-Garcia (ABG) geometry describing spherically symmetric regular black-hole or no-horizon spacetimes. While the Bardeen geometry is not exact solution of Einstein's equations, the ABG spacetime is related to self-gravitating charged sources governed by Einstein's gravity and non-linear electrodynamics. They both are characterized by the mass parameter $m$ and the charge parameter $g$. We demonstrate that in similarity to the Reissner-Nordstrom (RN) naked singularity spacetimes an antigravity static sphere should exist in all the no-horizon Bardeen and ABG solutions that can be sorrounded by a Keplerian accretion disc. However, contrary to the RN naked singularity spacetimes, the ABG no-horizon spacetimes with parameter $g/m > 2$ can contain also an additional inner Keplerian disc hidden under the static antigravity sphere. Properties of the geodesic structure are reflected by simple observationally relevant optical phe...

Stuchlik, Zdenek

2015-01-01T23:59:59.000Z

367

Unruh-DeWitt detector response along static and circular geodesic trajectories for Schwarzschild-AdS black holes  

E-Print Network [OSTI]

We present novel methods to numerically address the problem of characterizing the response of particle detectors in curved spacetimes. These methods allow for the integration of the Wightman function, at least in principle, in rather general backgrounds. In particular we will use this tool to further understand the nature of conformal massless scalar Hawking radiation from a Schwarzschild black hole in anti-de Sitter space. We do that by studying an Unruh-DeWitt detector at rest above the horizon and in circular geodesic orbit. The method allows us to see that the response rate shows peaks at certain characteristic frequencies, which correspond to the quasinormal modes (QNMs) of the space-time. It is in principle possible to apply these techniques to more complicated and interesting physical scenarios, e.g. geodesic infall or multiple detector entanglement evolution, or the study of the behaviour of quantum correlations in spacetimes with black hole horizons.

Keith K. Ng; Lee Hodgkinson; Jorma Louko; Robert B. Mann; Eduardo Martin-Martinez

2014-09-15T23:59:59.000Z

368

Rethinking the Future Grid: Integrated Nuclear Renewable Energy Systems: Preprint  

SciTech Connect (OSTI)

The U.S. DOE is supporting research and development that could lead to more efficient utilization of clean energy generation sources, including renewable and nuclear options, to meet both grid demand and thermal energy needs in the industrial sector. One concept under consideration by the DOE-NE and DOE-EERE is tighter coupling of nuclear and renewable energy sources in a manner that better optimizes energy use for the combined electricity, industrial manufacturing, and transportation sectors. This integration concept has been referred to as a 'hybrid system' that is capable of apportioning thermal and electrical energy to first meet the grid demand (with appropriate power conversion systems), then utilizing excess thermal and, in some cases, electrical energy to drive a process that results in an additional product.

Bragg-Sitton, S. M.; Boardman, R.; Ruth, M.; Zinaman, O.; Forsberg, C.

2015-01-01T23:59:59.000Z

369

New Report Characterizes Existing Offshore Wind Grid Interconnection...  

Office of Environmental Management (EM)

New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities September 3,...

370

Quantifying The Complexity Of Geodesic Paths On Curved Statistical Manifolds Through Information Geometric Entropies and Jacobi Fields  

E-Print Network [OSTI]

We characterize the complexity of geodesic paths on a curved statistical manifold M_{s} through the asymptotic computation of the information geometric complexity V_{M_{s}} and the Jacobi vector field intensity J_{M_{s}}. The manifold M_{s} is a 2l-dimensional Gaussian model reproduced by an appropriate embedding in a larger 4l-dimensional Gaussian manifold and endowed with a Fisher-Rao information metric g_{{\\mu}{\

Carlo Cafaro; Stefano Mancini

2010-11-25T23:59:59.000Z

371

Helix coupling  

DOE Patents [OSTI]

A coupling for connecting helix members in series, which consists of a pair of U-shaped elements, one of which is attached to each helix end with the "U" sections of the elements interlocked. The coupling is particularly beneficial for interconnecting helical Nitinol elements utilized in thermal actuators or engines. Each coupling half is attached to the associated helix at two points, thereby providing axial load while being easily removed from the helix, and reusable.

Ginell, W.S.

1989-04-25T23:59:59.000Z

372

Helix coupling  

DOE Patents [OSTI]

A coupling for connecting helix members in series, which consists of a pair of U-shaped elements, one of which is attached to each helix end with the U sections of the elements interlocked. The coupling is particularly beneficial for interconnecting helical Nitinol elements utilized in thermal actuators or engines. Each coupling half is attached to the associated helix at two points, thereby providing axial load while being easily removed from the helix, and reusable.

Ginell, W.S.

1982-03-17T23:59:59.000Z

373

Spacer grid assembly and locking mechanism  

DOE Patents [OSTI]

A spacer grid assembly is disclosed for retaining a plurality of fuel rods in substantially parallel spaced relation, the spacer grids being formed with rhombic openings defining contact means for engaging from one to four fuel rods arranged in each opening, the spacer grids being of symmetric configuration with their rhombic openings being asymmetrically offset to permit inversion and relative rotation of the similar spacer grids for improved support of the fuel rods. An improved locking mechanism includes tie bars having chordal surfaces to facilitate their installation in slotted circular openings of the spacer grids, the tie rods being rotatable into locking engagement with the slotted openings.

Snyder, Jr., Harold J. (Rancho Santa Fe, CA); Veca, Anthony R. (San Diego, CA); Donck, Harry A. (San Diego, CA)

1982-01-01T23:59:59.000Z

374

Building the International Lattice Data Grid  

E-Print Network [OSTI]

We present the International Lattice Data Grid (ILDG), a loosely federated grid of grids for sharing data from Lattice Quantum Chromodynamics (LQCD) simulations. The ILDG comprises of metadata, file format and web-service standards, which can be used to wrap regional data-grid interfaces, allowing seamless access to catalogues and data in a diverse set of collaborating regional grids. We discuss the technological underpinnings of the ILDG, primarily the metadata and the middleware, and offer a critique of its various aspects with the hindsight of the design work and the first full year of production.

G. Beckett; B. Joo; C. M. Maynard; D. Pleiter; O. Tatebe; T. Yoshie

2009-10-09T23:59:59.000Z

375

Grid artifact reduction for direct digital radiography detectors based on rotated stationary grids with homomorphic filtering  

SciTech Connect (OSTI)

Purpose: Grid artifacts are caused when using the antiscatter grid in obtaining digital x-ray images. In this paper, research on grid artifact reduction techniques is conducted especially for the direct detectors, which are based on amorphous selenium. Methods: In order to analyze and reduce the grid artifacts, the authors consider a multiplicative grid image model and propose a homomorphic filtering technique. For minimal damage due to filters, which are used to suppress the grid artifacts, rotated grids with respect to the sampling direction are employed, and min-max optimization problems for searching optimal grid frequencies and angles for given sampling frequencies are established. The authors then propose algorithms for the grid artifact reduction based on the band-stop filters as well as low-pass filters. Results: The proposed algorithms are experimentally tested for digital x-ray images, which are obtained from direct detectors with the rotated grids, and are compared with other algorithms. It is shown that the proposed algorithms can successfully reduce the grid artifacts for direct detectors. Conclusions: By employing the homomorphic filtering technique, the authors can considerably suppress the strong grid artifacts with relatively narrow-bandwidth filters compared to the normal filtering case. Using rotated grids also significantly reduces the ringing artifact. Furthermore, for specific grid frequencies and angles, the authors can use simple homomorphic low-pass filters in the spatial domain, and thus alleviate the grid artifacts with very low implementation complexity.

Kim, Dong Sik [Department of Electronics Engineering, Hankuk University of Foreign Studies, Gyeonggi-do 449-791 (Korea, Republic of); Lee, Sanggyun [R and D Center, DRTECH Co., Gyeonggi-do 463-782 (Korea, Republic of)

2013-06-15T23:59:59.000Z

376

Solving Partial Differential Equations on Overlapping Grids  

SciTech Connect (OSTI)

We discuss the solution of partial differential equations (PDEs) on overlapping grids. This is a powerful technique for efficiently solving problems in complex, possibly moving, geometry. An overlapping grid consists of a set of structured grids that overlap and cover the computational domain. By allowing the grids to overlap, grids for complex geometries can be more easily constructed. The overlapping grid approach can also be used to remove coordinate singularities by, for example, covering a sphere with two or more patches. We describe the application of the overlapping grid approach to a variety of different problems. These include the solution of incompressible fluid flows with moving and deforming geometry, the solution of high-speed compressible reactive flow with rigid bodies using adaptive mesh refinement (AMR), and the solution of the time-domain Maxwell's equations of electromagnetism.

Henshaw, W D

2008-09-22T23:59:59.000Z

377

Smart Grid Status and Metrics Report Appendices  

SciTech Connect (OSTI)

A smart grid uses digital power control and communication technology to improve the reliability, security, flexibility, and efficiency of the electric system, from large generation through the delivery systems to electricity consumers and a growing number of distributed generation and storage resources. To convey progress made in achieving the vision of a smart grid, this report uses a set of six characteristics derived from the National Energy Technology Laboratory Modern Grid Strategy. The Smart Grid Status and Metrics Report defines and examines 21 metrics that collectively provide insight into the grid’s capacity to embody these characteristics. This appendix presents papers covering each of the 21 metrics identified in Section 2.1 of the Smart Grid Status and Metrics Report. These metric papers were prepared in advance of the main body of the report and collectively form its informational backbone.

Balducci, Patrick J.; Antonopoulos, Chrissi A.; Clements, Samuel L.; Gorrissen, Willy J.; Kirkham, Harold; Ruiz, Kathleen A.; Smith, David L.; Weimar, Mark R.; Gardner, Chris; Varney, Jeff

2014-07-01T23:59:59.000Z

378

Fully Nonlinear Edge Gyrokinetic Simulations of Kinetic Geodesic-Acoustic Modes and Boundary Flows  

SciTech Connect (OSTI)

We present edge gyrokinetic neoclassical simulations of tokamak plasmas using the fully nonlinear (full-f) continuum code TEMPEST. A nonlinear Boltzmann model is used for the electrons. The electric field is obtained by solving the 2D gyrokinetic Poisson Equation. We demonstrate the following: (1) High harmonic resonances (n > 2) significantly enhance geodesic-acoustic mode (GAM) damping at high-q (tokamak safety factor), and are necessary to explain both the damping observed in our TEMPEST q-scans and experimental measurements of the scaling of the GAM amplitude with edge q{sub 95} in the absence of obvious evidence that there is a strong q dependence of the turbulent drive and damping of the GAM. (2) The kinetic GAM exists in the edge for steep density and temperature gradients in the form of outgoing waves, its radial scale is set by the ion temperature profile, and ion temperature inhomogeneity is necessary for GAM radial propagation. (3) The development of the neoclassical electric field evolves through different phases of relaxation, including GAMs, their radial propagation, and their long-time collisional decay. (4) Natural consequences of orbits in the pedestal and scrape-off layer region in divertor geometry are substantial non-Maxwellian ion distributions and flow characteristics qualitatively like those observed in experiments.

Xu, X Q; Belli, E; Bodi, K; Candy, J; Chang, C S; Cohen, B I; Cohen, R H; Colella, P; Dimits, A M; Dorr, M R; Gao, Z; Hittinger, J A; Ko, S; Krasheninnikov, S; McKee, G R; Nevins, W M; Rognlien, T D; Snyder, P B; Suh, J; Umansky, M V

2008-09-18T23:59:59.000Z

379

Geodesic flow on three dimensional ellipsoids with equal semi-axes  

E-Print Network [OSTI]

Following on from our previous study of the geodesic flow on three dimensional ellipsoid with equal middle semi-axes, here we study the remaining cases: Ellipsoids with two sets of equal semi-axes with $SO(2) \\times SO(2)$ symmetry, ellipsoids with equal larger or smaller semi-axes with SO(2) symmetry, and ellipsoids with three semi-axes coinciding with SO(3) symmetry. All of these cases are Liouville-integrable, and reduction of the symmetry leads to singular reduced systems on lower-dimensional ellipsoids. The critical values of the energy-momentum maps and their singular fibers are completely classified. In the cases with SO(2) symmetry there are corank 1 degenerate critical points; all other critical points are non-degenreate. We show that in the case with $SO(2) \\times SO(2)$ symmetry three global action variables exist and the image of the energy surface under the energy-momentum map is a convex polyhedron. The case with SO(3) symmetry is non-commutatively integrable, and we show that the fibers over regular points of the energy-casimir map are $T^2$ bundles over $S^2$.

Chris M. Davison; Holger R. Dullin

2006-11-22T23:59:59.000Z

380

Null geodesics in the Alcubierre warp drive spacetime: the view from the bridge  

E-Print Network [OSTI]

The null geodesic equations in the Alcubierre warp drive spacetime are numerically integrated to determine the angular deflection and redshift of photons which propagate through the distortion of the ``warp drive'' bubble to reach an observer at the origin of the warp effect. We find that for a starship with an effective warp speed exceeding the speed of light, stars in the forward hemisphere will appear closer to the direction of motion than they would to an observer at rest. This aberration is qualitatively similar to that caused by special relativity. Behind the starship, a conical region forms from within which no signal can reach the starship, an effective ``horizon''. Conversely, there is also an horizon-like structure in a conical region in front of the starship, into which the starship cannot send a signal. These causal structures are somewhat analogous to the Mach cones associated with supersonic fluid flow. The existence of these structures suggests that the divergence of quantum vacuum energy when the starship effectively exceeds the speed of light, first discovered in two dimensions, will likely be present in four dimensions also, and prevent any warp-drive starship from ever exceeding the effective speed of light.

Chad Clark; William A. Hiscock; Shane L. Larson

1999-07-06T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Vehicle to Grid Demonstration Project  

SciTech Connect (OSTI)

This report summarizes the activities and accomplishments of a two-year DOE-funded project on Grid-Integrated Vehicles (GIV) with vehicle to grid power (V2G). The project included several research and development components: an analysis of US driving patterns; an analysis of the market for EVs and V2G-capable EVs; development and testing of GIV components (in-car and in-EVSE); interconnect law and policy; and development and filing of patents. In addition, development activities included GIV manufacturing and licensing of technologies developed under this grant. Also, five vehicles were built and deployed, four for the fleet of the State of Delaware, plus one for the University of Delaware fleet.

Willett Kempton; Meryl Gardner; Michael Hidrue; Fouad Kamilev; Sachin Kamboj; Jon Lilley; Rodney McGee; George Parsons; Nat Pearre; Keith Trnka

2010-12-31T23:59:59.000Z

382

North RTL grid scan'' studies  

SciTech Connect (OSTI)

This study was made in response to screen measurements which indicated an emittance growth of nearly a factor of two within the North RTL or linac girder-1. Betatron oscillations are induced at the beginning of the North RTL to search for gross geometric aberrations arising within the RTL or sector-2 of the linac. The oscillations are induced horizontally and vertically with two X or two Y dipole correctors stepped in a nested loop fashion. In both cases the full set of RTL and first girder sector-2 linac beam position monitors (BPMs) are sampled in X and Y for each corrector setting. Horizontal (or vertical) data from pairs of BPMs are then transformed to phase space coordinates by the linear transformation constructed assuming the transport optics between the BPMs is known. A second transformation is then made to normalized phase space coordinates by using Twiss parameters consistent with the assumed transport optics. By careful choice of initial Twiss parameters the initial grid can be made square for convenience in graphical interpretation. A linear grid'' is then fitted to the transformed data points for each pair of BPMs. The area of each grid is calculated and linearity qualitatively evaluated. Furthermore, although not the focus of this study, the beta match at each BPM can be quantified. 6 figs.

Emma, P.

1990-10-17T23:59:59.000Z

383

The CMS integration grid testbed  

SciTech Connect (OSTI)

The CMS Integration Grid Testbed (IGT) comprises USCMS Tier-1 and Tier-2 hardware at the following sites: the California Institute of Technology, Fermi National Accelerator Laboratory, the University of California at San Diego, and the University of Florida at Gainesville. The IGT runs jobs using the Globus Toolkit with a DAGMan and Condor-G front end. The virtual organization (VO) is managed using VO management scripts from the European Data Grid (EDG). Gridwide monitoring is accomplished using local tools such as Ganglia interfaced into the Globus Metadata Directory Service (MDS) and the agent based Mona Lisa. Domain specific software is packaged and installed using the Distribution After Release (DAR) tool of CMS, while middleware under the auspices of the Virtual Data Toolkit (VDT) is distributed using Pacman. During a continuous two month span in Fall of 2002, over 1 million official CMS GEANT based Monte Carlo events were generated and returned to CERN for analysis while being demonstrated at SC2002. In this paper, we describe the process that led to one of the world's first continuously available, functioning grids.

Graham, Gregory E.

2004-08-26T23:59:59.000Z

384

The Evolution Towards Grids: Ten Years of High-Speed, Wide Area, Data Intensive Computing  

E-Print Network [OSTI]

systems (e.g., multi-component turbomachine simulation); · Management of very large parameter space / Boeing Remote Help Desk that will provide aircraft field maintenance personnel use of coupled video1 The Evolution Towards Grids: Ten Years of High-Speed, Wide Area, Data Intensive Computing William

385

Improved design of a direct-coupled electronic titrimeter  

E-Print Network [OSTI]

Figure 1. DIRECT-COUPLED AMPLIFIER The cathode and grid of a tube (Fig. 1) may be employed as input terminals. Ths single-ends 1 output volta-s is much more sensitive to changes in difference of cathode and grid potent1als than to changes 1n... 21Q volts, and vill change by only 4 volts as the level of the inputs to the grids is changed from 0 to lSQ volts, thc chan c bein caused by a 5, 5 per cent va. iation of the total current, The volts. , e sensitivity, using the meter as a null...

Parker, Lonzie Albert

1957-01-01T23:59:59.000Z

386

Buildings-to-Grid Technical Opportunities: From the Grid Perspective |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartment of Energy Buildings Perspective Buildings-to-Grid

387

Smart Grid Savings and Grid Integration of Renewables in Idaho  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment of Energy U.S. DepartmentCommitmentGovernmentSmart Cities - 1 Smart Grid Savings

388

Buildings-to-Grid Technical Opportunities: From the Grid Perspective  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd:June 2015 < prevBuilding the DistributionBUILDING-TO-GRID

389

Green Energy Workshop Student Posters Semantic Complex Event Processing for Smart Grid Information  

E-Print Network [OSTI]

for Smart Grid Information Integration and Demand Management Qunzhi Zhou, Yogesh of the power grid to a Smart Grid. The benefits of Smart Grid include demand Grid Demonstration Project. We define an ontology model for Smart Grid

Prasanna, Viktor K.

390

Energetic-particle-induced electromagnetic geodesic acoustic mode in tokamak plasmas  

SciTech Connect (OSTI)

Energetic-particle-induced kinetic electromagnetic geodesic acoustic modes (EKEGAMs) are numerically studied in low ? (=plasma pressure/magnetic pressure) tokamak plasmas. The parallel component of the perturbed vector potential is considered along with the electrostatic potential perturbation. The effects of finite Larmor radius and finite orbit width of the bulk and energetic ions as well as electron parallel dynamics are all taken into account in the dispersion relation. Systematic harmonic and ordering analysis are performed for frequency and growth rate spectra of the EKEGAMs, assuming (k?{sub i})?q{sup ?3}???1, where q, k, and ?{sub i} are the safety factor, radial component of the EKEGAMs wave vector, and the Larmor radius of the ions, respectively. It is found that there exist critical ?{sub h}/?{sub i} values, which depend, in particular, on pitch angle of energetic ions and safety factor, for the mode to be driven unstable. The EKEGAMs may also be unstable for pitch angle ?{sub 0}B<0.4 in certain parameter regions. Finite ? effect of the bulk ions is shown to have damping effect on the EKEGAMs. Modes with higher radial wave vectors have higher growth rates. The damping from electron dynamics is found decreasing with decrease of the temperature ratio T{sub e}/T{sub i}. The modes are easily to be driven unstable in low safety factor q region and high temperature ratio T{sub h}/T{sub i} region. The harmonic features of the EKEGAMs are discussed as well.

Wang, Lingfeng, E-mail: wanglf@swip.ac.cn; He, Zhixiong; He, Hongda; Shen, Y. [Southwestern Institute of Physics, Chengdu 610041 (China); Dong, J. Q. [Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Southwestern Institute of Physics, Chengdu 610041 (China)

2014-07-15T23:59:59.000Z

391

ARPA-E: Advancing the Electric Grid  

SciTech Connect (OSTI)

The electric grid was designed with the assumption that all energy generation sources would be relatively controllable, and grid operators would always be able to predict when and where those sources would be located. With the addition of renewable energy sources like wind and solar, which can be installed faster than traditional generation technologies, this is no longer the case. Furthermore, the fact that renewable energy sources are imperfectly predictable means that the grid has to adapt in real-time to changing patterns of power flow. We need a dynamic grid that is far more flexible. This video highlights three ARPA-E-funded approaches to improving the grid's flexibility: topology control software from Boston University that optimizes power flow, gas tube switches from General Electric that provide efficient power conversion, and flow batteries from Harvard University that offer grid-scale energy storage.

Lemmon, John; Ruiz, Pablo; Sommerer, Tim; Aziz, Michael

2014-02-24T23:59:59.000Z

392

ARPA-E: Advancing the Electric Grid  

ScienceCinema (OSTI)

The electric grid was designed with the assumption that all energy generation sources would be relatively controllable, and grid operators would always be able to predict when and where those sources would be located. With the addition of renewable energy sources like wind and solar, which can be installed faster than traditional generation technologies, this is no longer the case. Furthermore, the fact that renewable energy sources are imperfectly predictable means that the grid has to adapt in real-time to changing patterns of power flow. We need a dynamic grid that is far more flexible. This video highlights three ARPA-E-funded approaches to improving the grid's flexibility: topology control software from Boston University that optimizes power flow, gas tube switches from General Electric that provide efficient power conversion, and flow batteries from Harvard University that offer grid-scale energy storage.

Lemmon, John; Ruiz, Pablo; Sommerer, Tim; Aziz, Michael

2014-03-13T23:59:59.000Z

393

FINAL REPORT - CENTER FOR GRID MODERNIZATION  

SciTech Connect (OSTI)

The objective of the CGM was to develop high-priority grid modernization technologies in advanced sensors, communications, controls and smart systems to enable use of real-time or near real-time information for monitoring, analyzing and managing distribution and transmission grid conditions. The key strategic approach to carry out individual CGM research and development (R&D) projects was through partnerships, primarily with the GridApp™ Consortium utility members.

Markiewicz, Daniel R

2008-06-30T23:59:59.000Z

394

Insightful Workflow For Grid Computing  

SciTech Connect (OSTI)

We developed a workflow adaptation and scheduling system for Grid workflow. The system currently interfaces with and uses the Karajan workflow system. We developed machine learning agents that provide the planner/scheduler with information needed to make decisions about when and how to replan. The Kubrick restructures workflow at runtime, making it unique among workflow scheduling systems. The existing Kubrick system provides a platform on which to integrate additional quality of service constraints and in which to explore the use of an ensemble of scheduling and planning algorithms. This will be the principle thrust of our Phase II work.

Dr. Charles Earl

2008-10-09T23:59:59.000Z

395

Mapping on the HEALPix grid  

E-Print Network [OSTI]

The natural spherical projection associated with the Hierarchical Equal Area and isoLatitude Pixelisation, HEALPix, is described and shown to be one of an infinite class not previously documented in the cartographic literature. Projection equations are derived for the class in general and it is shown that the HEALPix projection suggests a simple method (a) of storing, and (b) visualising data sampled on the grid of the HEALPix pixelisation, and also suggests an extension of the pixelisation that is better suited for these purposes. Potentially useful properties of other members of the class are described. Finally, the formalism is defined for representing any member of the class in the FITS data format.

M. R. Calabretta

2004-12-23T23:59:59.000Z

396

Smart Grid | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System Highlights SuccessSmart Grid Pages

397

Sandia National Laboratories: Grid Integration  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvideAidsCanal,Grid Integration Recent Sandia

398

Smart Grid | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on Energy andDepartment ofAn AudienceEnergy AsSmart Grid

399

Sandia National Laboratories: grid modernization  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfull moduleresources grid integration of

400

Grid Net | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump to: navigation, search Name: Grid Net

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Grid Partners | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump to: navigation, search Name: Grid Net

402

Open Science Grid at NERSC  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratorySpeeding access1 TechnicalOilOnline ApplicationOpen Science Grid

403

Sandia National Laboratories: Grid Integration  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLS Exhibit at ExploraGlobal SandiaVermont and SandiaGrid

404

file://P:\\Smart Grid\\Smart Grid RFI Policy and Logistical Comme  

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

Docket: DOE-HQ-2010-0024 Policy and Logistical Challenges to Smart Grid Implementation Comment On: DOE-HQ-2010-0024-0001 Policy and Logistical Challenges to Smart Grid...

405

Quantifying the Impact of Adverse Events on the Electricity Grid as a Function of Grid Topology  

SciTech Connect (OSTI)

Abstract--Traditional approaches to the study of grid vulnerability have taken an asset based approach, which seeks to identify those assets most likely to result in grid-wide failures or disruptions in the event that they are compromised. We propose an alternative approach to the study of grid vulnerability, one based on the topological structure of the entire grid. We propose a method that will identify topological parameters most closely related to the ability of the grid to withstand an adverse event. We compare these topological parameters in terms of their impact on the vulnerability metric we have defined, referred to as the grid’s “survivability”. Our approach is motivated by Paul Baran’s work on communications networks, which also studied vulnerability in terms of network-wide parameters. Our approach is useful both as a planning model for evaluating proposed changes to a grid and as a risk assessment tool.

Coles, Garill A.; Sadovsky, Artyom; Du, Pengwei

2011-11-30T23:59:59.000Z

406

Smart Grid Newsletter ? The Regulators Role in Grid Modernization...  

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

The Smart Grid - How do we get there? One step at a time - the path to the Smart Grid is a long and complex journey that needs to be broken down into manageable and understandable...

407

Effects of grids in drift tubes  

SciTech Connect (OSTI)

In 2011, we upgraded a 201 MHz buncher in the proton injector for the alternating gradient synchrotron (AGS) - relativistic heavy ion collider (RHIC) complex. In the buncher we installed four grids made of tungsten to improve the transit time factor. The grid installed drift tubes have 32 mm of inner diameter and the each grid consists of four quadrants. The quadrants were cut out precisely from 1mm thick tungsten plates by a computerized numerically controlled (CNC) wire cutting electrical discharge machining (EDM). The 3D electric field of the grid was simulated.

Okamura M.; Yamauchi, H.

2012-05-20T23:59:59.000Z

408

Grid Connectivity Research, Development & Demonstration Projects  

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

and communication technology * Engage demonstration partners to validate NIST smart grid standards for utility network and sub-meter requirements (includes ANSI, NEMA...

409

Sandia National Laboratories: Transmission Grid Integration  

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

Grid Integration, Wind Energy Sandia finalized and submitted the updated "WECC Wind Power Plant Dynamic Model-ing Guide" and the "WECC PV Power Plant Dynamic Modeling...

410

Chapter III: Modernizing the Electric Grid  

Office of Environmental Management (EM)

34 QER Report: Energy Transmission, Storage, and Distribution Infrastructure | April 2015 Chapter III: Modernizing the Electric Grid QER Report: Energy Transmission, Storage, and...

411

The Virtual Observatory and Grid in Spain  

E-Print Network [OSTI]

The Virtual Observatory (VO) is nearing maturity, and in Spain the Spanish VO (SVO) exists since June 2004. There have also been numerous attempts at providing more or less encompassing grid initiatives at the national level, and finally Spain has an official National Grid Initiative (NGI). In this article we will show the VO and Grid development status of nationally funded initiatives in Spain, and we will hint at potential joint VO-Grid use-cases to be developed in Spain in the near future.

J. D. Santander-Vela

2008-07-08T23:59:59.000Z

412

Opening Remarks, Grid Integration Initiative Overview  

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

Loads Power Systems Integration Lab PV and Grid Simulators Energy Systems Integration Lab Fuel Cells, Electrolyzers Outdoor Test Area EVs, MV equipment Rooftop PV & Wind Energy...

413

"Artificial" brains, electrical grids, and disease modeling:...  

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

Science discoveries unveiled "Artificial" brains, electrical grids, and disease modeling: Los Alamos science discoveries unveiled September 15 The event is an opportunity for...

414

Energy Storage for the Power Grid  

ScienceCinema (OSTI)

The iron vanadium redox flow battery was developed by researchers at Pacific Northwest National Laboratory as a solution to large-scale energy storage for the power grid.

Wang, Wei; Imhoff, Carl; Vaishnav, Dave

2014-06-12T23:59:59.000Z

415

Principal Characteristics of a Modern Grid  

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

Some Technical Challenges Symposium on Modeling & Control of Alternative Energy Systems Joe Miller - Modern Grid Team Lead April 2, 2009 1 Conducted by the National Energy...

416

Panel 3, Electrolysis for Grid Energy Storage  

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

Electrolysis for Grid Energy Storage DOE-Industry Canada Workshop May 15, 2014 INTRODUCTION HYDROGEN ENERGY SYSTEMS FOR ENERGY STORAGE AND CLEAN FUEL PRODUCTION ITM POWER INC. ITM...

417

Energy Storage for the Power Grid  

SciTech Connect (OSTI)

The iron vanadium redox flow battery was developed by researchers at Pacific Northwest National Laboratory as a solution to large-scale energy storage for the power grid.

Wang, Wei; Imhoff, Carl; Vaishnav, Dave

2014-04-23T23:59:59.000Z

418

Microsoft Word - Smart Grid Economic Impact Report  

Energy Savers [EERE]

benefits include real estate, wholesale trade, financial services, restaurants, and health care. Smart Grid ARRA investments also supported employment in personal service...

419

Grid Engineering for Accelerated Renewable Energy Deployment  

Broader source: Energy.gov [DOE]

The SunShot Grid Engineering for Accelerated Renewable Energy Deployment (GEARED) program supports increased power system research, development, and analytical capacity while simultaneously growing...

420

What is the Smart Grid Anyway  

Broader source: Energy.gov [DOE]

Presentation covers what is the smart grid at the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

Note: This page contains sample records for the topic "geodesic grid coupled" 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

Ion mobility spectrometer with virtual aperture grid  

DOE Patents [OSTI]

An ion mobility spectrometer does not require a physical aperture grid to prevent premature ion detector response. The last electrodes adjacent to the ion collector (typically the last four or five) have an electrode pitch that is less than the width of the ion swarm and each of the adjacent electrodes is connected to a source of free charge, thereby providing a virtual aperture grid at the end of the drift region that shields the ion collector from the mirror current of the approaching ion swarm. The virtual aperture grid is less complex in assembly and function and is less sensitive to vibrations than the physical aperture grid.

Pfeifer, Kent B. (Los Lunas, NM); Rumpf, Arthur N. (Albuquerque, NM)

2010-11-23T23:59:59.000Z

422

Smart Grid Demonstration Funding Opportunity Announcement DE...  

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

Frequently asked questions about the Smart Grid Demonstration and Energy Storage Funding Opportunity Announcement released as part of the American Recovery and Reinvestment Act,...

423

Optimization Online - Compressed Sensing Off the Grid  

E-Print Network [OSTI]

Sep 13, 2012 ... Compressed Sensing Off the Grid. Gongguo Tang(gtang5 ***at*** wisc.edu) Badri Narayan Bhaskar(bnbhaskar ***at*** wisc.edu) Parikshit ...

Gongguo Tang

2012-09-13T23:59:59.000Z

424

Value of a Smart Grid System  

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

2 - Section 1: Smart Grid Opportunities Remarkable things happen when economic forces and new technology converge. Consider how the the Internet -- combined with new, affordable...

425

The Quest for Sustainable Smart Grids  

E-Print Network [OSTI]

This paper is a reply to the opinion paper: Transdisciplinary electric power grid science (PNAS), 2013 [arXiv:1307.7305].

Nardelli, Pedro H J; Cardieri, Paulo; Latva-aho, Matti

2013-01-01T23:59:59.000Z

426

BPA Study of Smart Grid Economics ...  

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

Study of Smart Grid Economics Identifies Attractive Opportunities and Key Uncertainties Bonneville Power Administration (BPA) and Navigant Consulting recently released a white...

427

Platform for a modern grid: customer engagement  

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

stories engaging the customer when deploying new technologies in the nation's largest smart grid demonstration. Related Articles (by tag) NWPPA spotlights synchrophasors,...

428

Case Study - EPB Smart Grid Investment Grant  

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

EPB Smart Grid Investment Grant 1 Smart switches installed in EPB service territory A Smarter Electric Circuit: Electric Power Board of Chattanooga Makes the Switch EPB of...

429

Sandia National Laboratories: Distribution Grid Integration  

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

Current switches have been inefficient and ... ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration,...

430

Spherical Harmonic Decomposition on a Cubic Grid  

E-Print Network [OSTI]

A method is described by which a function defined on a cubic grid (as from a finite difference solution of a partial differential equation) can be resolved into spherical harmonic components at some fixed radius. This has applications to the treatment of boundary conditions imposed at radii larger than the size of the grid, following Abrahams, Rezzola, Rupright et al.(gr-qc/9709082}. In the method described here, the interpolation of the grid data to the integration 2-sphere is combined in the same step as the integrations to extract the spherical harmonic amplitudes, which become sums over grid points. Coordinates adapted to the integration sphere are not needed.

Charles W. Misner

1999-10-12T23:59:59.000Z

431

Grid-independent Issue in Numerical Heat Transfer  

E-Print Network [OSTI]

Grid independent is associated with the accuracy or even rationality of numerical results. This paper takes two-dimensional steady heat transfer for example to reveal the effect of grid resolution on numerical results. The law of grid dependence is obtained and a simple mathematical formula is presented. The production acquired here can be used as the guidance in choosing grid density in numerical simulation and get exact grid independent value without using infinite fine grid. Through analyzing grid independent, we can find the minimum number of grid cells that is needed to get grid-independent results. Such strategy can save computational resource while ensure a rational computational result.

Yao Wei; Wang Jian; Liao Guangxuan

2006-09-26T23:59:59.000Z

432

Intgration oriente service des modles Grid et Multi-Agents  

E-Print Network [OSTI]

/Grid service, Service-oriented architecture, STROBE model, Software engineering, Mixed systems. JFSMA 2006 of a service-oriented approach. The concept of service is clearly at the intersection of GRID and MAS, Interaction, Grid, Intégration agent-Grid, Web/Grid service, Architecture orientée service, modèle STROBE

Paris-Sud XI, Université de

433

Computation and Information Hierarchy for a Future Grid  

E-Print Network [OSTI]

Computation and Information Hierarchy for a Future Grid Future Grid Initiative White Paper Power;#12;Computation and Information Hierarchy for a Future Grid Prepared for the Project "The Future Grid to Enable This white paper was developed as one of nine white papers in the project "The Future Grid to Enable

434

Towards a Grid Information Knowledge Base , Marios D. Dikaiakos1  

E-Print Network [OSTI]

Towards a Grid Information Knowledge Base Wei Xing1 , Marios D. Dikaiakos1 , and Rizos Sakellariou2 present our work on building a Grid infor- mation knowledge base, which is a key component of a semantic Grid information system. A Core Grid Ontology (CGO) is developed for build- ing a Grid knowledge base

Pallis, George

435

A CHARACTERIZATION OF MAPPING UNSTRUCTURED GRIDS ONTO STRUCTURED  

E-Print Network [OSTI]

BIT 1997 A CHARACTERIZATION OF MAPPING UNSTRUCTURED GRIDS ONTO STRUCTURED GRIDS AND USING MULTIGRID solution is to map the unstructured grid onto a structured grid and then apply multigrid to a sequence 06520-8285, USA. email: schultz-martin@cs.yale.edu Abstract. Many problems based on unstructured grids

Douglas, Craig C.

436

Cyber-Physical Systems Security for Smart Grid  

E-Print Network [OSTI]

Cyber-Physical Systems Security for Smart Grid Future Grid Initiative White Paper Power Systems-Physical Systems Security for Smart Grid Prepared for the Project "The Future Grid to Enable Sustainable Energy Acknowledgements This white paper was developed as one of nine white papers in the project "The Future Grid

437

Cyber-Physical Systems Security for Smart Grid  

E-Print Network [OSTI]

Cyber-Physical Systems Security for Smart Grid Future Grid Initiative White Paper Power Systems-Physical Systems Security for Smart Grid Prepared for the Project "The Future Grid to Enable Sustainable Energy as one of nine white papers in the project "The Future Grid to Enable Sustainable Energy Systems

438

The `Service Cache' Pattern and Grid Services in the European Grid of Solar Observations (EGSO)  

E-Print Network [OSTI]

The `Service Cache' Pattern and Grid Services in the European Grid of Solar Observations (EGSO) S delivery, and faster response times for consumers. 1 Introduction The EGSO (European Grid of Solar. Design The overall service is split into two cooperating components: a service access component

Haddadi, Hamed

439

Browse > Journals> Smart Grid, IEEE Transactions ...> Top Accessed Articles 1. Smart Transmission Grid: Vision and Framework  

E-Print Network [OSTI]

Browse > Journals> Smart Grid, IEEE Transactions ...> Top Accessed Articles 1. Smart Transmission.2080328 3. A Reliability Perspective of the Smart Grid Moslehi, K. Kumar, R. Page(s): 57 - 64 Digital Object Consumption Scheduling for the Future Smart Grid Mohsenian-Rad, A. Wong, V.W.S. Jatskevich, J. Schober, R

Tennessee, University of

440

Grid Transformation Workshop Results Grid Transformation Workshop Results 2 April 2012  

E-Print Network [OSTI]

Grid Transformation Workshop Results April 2012 #12;Grid Transformation Workshop Results 2 April 2012 Grid Transformation Workshop Results plications. We will explore the basics of data modeling Transformation Workshop: Advanced Reading Material Product ID 1024659. The material in this report builds upon

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


441

Spin-induced non-geodesic motion, gyroscopic precession, Wigner rotation and EPR correlations of massive spin 1/2 particles in a gravitational field  

E-Print Network [OSTI]

We investigate in a covariant manner the spin-induced non-geodesic motion of massive spin 1/2 particles in an arbitrary gravitational field for trajectories that are initially geodesic when spin is ignored. Using the WKB approximation for the wave function in curved spacetime, we compute the O(hbar) correction to the Wigner rotation of the spin 1/2 particle, whose O(1) contribution is zero on timelike geodesics. We develop conditions for the motion of observers in which the Wigner rotation is null. For the spherically symmetric Schwarzschild metric, we consider specific examples of particle motion in the equatorial plane for (i) circular orbits and (ii) radially infalling trajectories. For the former case we consider the entanglement for a perfectly anti-correlated EPR entangled pair of spins as the separate qubits traverse the circular orbit in same direction.

P. M. Alsing; G. J. Stephenson Jr.; P. Kilian

2009-02-09T23:59:59.000Z

442

Grid Cryptographic Simulation: A Simulator to Evaluate the Scalability of the X.509 Standard in the Smart Grid  

E-Print Network [OSTI]

in the Smart Grid Tucker L. Ward Senior Honors Thesis Dartmouth College, Hanover, NH, USA Dartmouth Computer visions of the smart grid; our research developed a simulation, Grid Cryptographic Simulation (GCS grid. 1. INTRODUCTION Cryptography is critically important in the envisioned smart grid; current

443

AN "AC INDUCTOR" BASED GRID CONNECTED INVERTER  

E-Print Network [OSTI]

AN "AC INDUCTOR" BASED GRID CONNECTED INVERTER Ilya Zeltser, Student Member, IEEE and Sam Ben proposes a soft switched Output Current Sourcing (OCS) grid connected inverter that applies a high sourcing inverters where the small disturbance at the line voltage may lead to current run away

444

Demand Response and Electric Grid Reliability  

E-Print Network [OSTI]

Demand Response and Electric Grid Reliability Paul Wattles Senior Analyst, Market Design & Development, ERCOT CATEE Conference, Galveston October 10, 2012 2 North American Bulk Power Grids CATEE Conference October 10, 2012 ? The ERCOT... adequacy ? ?Achieving more DR participation would . . . displace some generation investments, but would achieve the same level of reliability... ? ?Achieving this ideal requires widespread demand response and market structures that enable loads...

Wattles, P.

2012-01-01T23:59:59.000Z

445

SMART GRID: IL RUOLO DELLA REGOLAZIONE  

E-Print Network [OSTI]

SMART GRID: IL RUOLO DELLA REGOLAZIONE Luca Lo Schiavo Autorità per l'energia elettrica e il gas (DG Research) ­ Partecipazione alla Smart Grids Task Force (DG TREN) ­ Collaborazione per-20-20 · Scenario complesso con molte variabili ­ Effettivo sviluppo generazione distribuita ­ Stabilità del sistema

446

Polish grid infrastructure for science and research  

E-Print Network [OSTI]

Structure, functionality, parameters and organization of the computing Grid in Poland is described, mainly from the perspective of high-energy particle physics community, currently its largest consumer and developer. It represents distributed Tier-2 in the worldwide Grid infrastructure. It also provides services and resources for data-intensive applications in other sciences.

Ryszard Gokieli; Krzysztof Nawrocki; Adam Padee; Dorota Stojda; Karol Wawrzyniak; Wojciech Wislicki

2007-10-07T23:59:59.000Z

447

Stretched-Grid Model Intercomparison Project  

E-Print Network [OSTI]

- Land-sea differences - Surface parameters Applications (besides regional climate variability and change, Russia #12;OUTLINE 1. INTRODUCTION: Exploring the variable- resolution stretched-grid approach (for grid- point models: Staniforth and Mitchell 1978, and for spectral models: Schmidt 1977) to regional climate

Gruner, Daniel S.

448

Computational Needs for the Next Generation Electric Grid Proceedings  

E-Print Network [OSTI]

system planning, renewable energy, smart grids, storage planning projects will become even more critical as the smart grid planning  models.   Some  of  these  objectives  are  not  well  defined,  like  smart?grid 

Birman, Kenneth

2012-01-01T23:59:59.000Z

449

Assessing the Usefulness of Distributed Measurements in the Smart Grid  

E-Print Network [OSTI]

Kezunovic, M. ; , "Smart Fault Location for Smart Grids,"Smart Grid, IEEE Transactions on , vol.2, no.1, pp.11-22,Measurements in the Smart Grid A thesis submitted in partial

Framhein, Theodore Anthony

2012-01-01T23:59:59.000Z

450

Integrating Grid Services into the Cray XT4 Environment  

E-Print Network [OSTI]

with the system side of the grid work. Before joining NERSC,Franklin login node for grid access. This will simplify thethe feasibility of grid VO based project accounts to share

Cholia, Shreyas

2010-01-01T23:59:59.000Z

451

Efficient Bulk Data Replication for the Earth System Grid  

E-Print Network [OSTI]

for the Earth System Grid Alex Sim 1 , Dan Gunter 1 , VijayaUSA Abstract The Earth System Grid (ESG) community faces theIntroduction The Earth System Grid (ESG) [1] community faces

Sim, Alex

2010-01-01T23:59:59.000Z

452

WISDOM: A Grid-Enabled Drug Discovery Initiative Against Malaria  

E-Print Network [OSTI]

14 WISDOM: A Grid-Enabled Drug Discovery Initiative Against Malaria Vincent Breton, Doman Kim ................................................................................ 354 14.2 Grid-Enabled Drug Discovery .................................................. 354 14.2.1 In Silico Drug Discovery: Requirements and Grid Added Value

Paris-Sud XI, Université de

453

Nested-grid simulation of mercury over North America  

E-Print Network [OSTI]

Chemistry and Physics Nested-grid simulation of mercury overY. Zhang et al. : Nested-grid simulation of mercury overand Chen, S. -Y. : Plume-in-grid modeling of atmospheric

2012-01-01T23:59:59.000Z

454

Electricity Grid: Impacts of Plug-In Electric Vehicle Charging  

E-Print Network [OSTI]

in the context of regional grid structure and operations,and Regional U.S. Power Grids. Part 1: Technical Analysis;ccyang@ucdavis.edu. Electricity Grid Impacts of Plug-In

Yang, Christopher; McCarthy, Ryan

2009-01-01T23:59:59.000Z

455

2012 Smart Grid Peer Review | Department of Energy  

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

2012 Smart Grid Peer Review 2012 Smart Grid Peer Review The Office of Electricity Delivery and Energy Reliability held its bi-annual peer review of the Smart Grid Research and...

456

Assessing the Usefulness of Distributed Measurements in the Smart Grid  

E-Print Network [OSTI]

Kezunovic, M. ; , "Smart Fault Location for Smart Grids,"Smart Grid, IEEE Transactions on , vol.2, no.1, pp.11-22,in Distribution Systems," Smart Grid, IEEE Transactions on ,

Framhein, Theodore Anthony

2012-01-01T23:59:59.000Z

457

Security on the US Fusion Grid  

SciTech Connect (OSTI)

The National Fusion Collaboratory project is developing and deploying new distributed computing and remote collaboration technologies with the goal of advancing magnetic fusion energy research. This work has led to the development of the US Fusion Grid (FusionGrid), a computational grid composed of collaborative, compute, and data resources from the three large US fusion research facilities and with users both in the US and in Europe. Critical to the development of FusionGrid was the creation and deployment of technologies to ensure security in a heterogeneous environment. These solutions to the problems of authentication, authorization, data transfer, and secure data storage, as well as the lessons learned during the development of these solutions, may be applied outside of FusionGrid and scale to future computing infrastructures such as those for next-generation devices like ITER.

Burruss, Justin R.; Fredian, Tom W.; Thompson, Mary R.

2005-06-01T23:59:59.000Z

458

Data security on the national fusion grid  

SciTech Connect (OSTI)

The National Fusion Collaboratory project is developing and deploying new distributed computing and remote collaboration technologies with the goal of advancing magnetic fusion energy research. This work has led to the development of the US Fusion Grid (FusionGrid), a computational grid composed of collaborative, compute, and data resources from the three large US fusion research facilities and with users both in the US and in Europe. Critical to the development of FusionGrid was the creation and deployment of technologies to ensure security in a heterogeneous environment. These solutions to the problems of authentication, authorization, data transfer, and secure data storage, as well as the lessons learned during the development of these solutions, may be applied outside of FusionGrid and scale to future computing infrastructures such as those for next-generation devices like ITER.

Burruss, Justine R.; Fredian, Tom W.; Thompson, Mary R.

2005-06-01T23:59:59.000Z

459

Physics from Angular Projection of Rectangular Grids  

E-Print Network [OSTI]

In this paper, we present a mathematical model for the angular projection of a rectangular arrangement of points in a grid. This simple, yet interesting problem, has both a scholarly value and applications for data extraction techniques to study the physics of various systems. Our work can interest undergraduate students to understand subtle points in the angular projection of a grid and describes various quantities of interest in the projection with completeness and sufficient rigour. We show that for certain angular ranges, the projection has non-distinctness, and calculate the details of such angles, and correspondingly, the number of distinct points and the total projected length. We focus on interesting trends obtained for the projected length of the grid elements and present a simple application of the model to determine the geometry of an unknown grid whose spatial extensions are known, using measurement of the grid projection at two angles only. Towards the end, our model is shown to have potential ap...

Singh, Ashmeet

2015-01-01T23:59:59.000Z

460

X-ray grid-detector apparatus  

DOE Patents [OSTI]

A hybrid grid-detector apparatus for x-ray systems wherein a microchannel plate structure has an air-interspaced grid portion and a phosphor/optical fluid-filled grid portion. The grids are defined by multiple adjacent channels separated by lead-glass septa. X-rays entering the air-interspaced grid portion at an angle of impingement upon the septa are attenuated, while non-impinging x-rays pass through to the phosphor/fluid filled portion. X-ray energy is converted to luminescent energy in the phosphor/fluid filled portion and the resultant beams of light are directed out of the phosphor/optical fluid filled portion to an imaging device.

Boone, John M. (Folsom, CA); Lane, Stephen M. (Oakland, CA)

1998-01-27T23:59:59.000Z

Note: This page contains sample records for the topic "geodesic grid coupled" 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

The Grid: Prospects for Application in Metrology  

E-Print Network [OSTI]

Global system of distributing computing - Grid - created as reply for challenges, connected with the qualitative progress of complexity of experimental physical assemblies and information systems, is presented as optimal IT platform for assurance of measurement traceability in geographically remote regions and measurement data protection in global networks. The new component grid - Instrument Element (IE) - is intended for secure, remote, joint team work on monitoring and managing instruments generated and stored on distributed scientific equipment using conventional grid resources. The article describes the variety of all possible IE applications within grid technology for the tasks of metrology demanding IT support. Expanded by the new component IE grid becomes an optimal environment for effective monitoring, management and servicing of measuring resources which has the highest level of measurement data transfer, storage and processing safety and reveals new opportunities to track measurement procedures and...

Neyezhmakov, P I; Zub, S S

2011-01-01T23:59:59.000Z

462

GridOPTICS(TM): A Design for Plug-and-Play Smart Grid Software Architecture  

SciTech Connect (OSTI)

As the smart grid becomes reality, software architectures for integrating legacy systems with new innovative approaches for grid management are needed. These architectures must exhibit flexibility, extensibility, interoperability and scalability. In this position paper, we describe our preliminary work to design such an architecture, known as GridOPTICS, that will enable the deployment and integration of new software tools in smart grid operations. Our preliminary design is based upon use cases from PNNL’s Future Power Grid Initiative, which is a developing a collection of advanced software technologies for smart grid management and control. We describe the motivations for GridOPTICS, and the preliminary design that we are currently prototyping for several distinct use cases.

Gorton, Ian; Liu, Yan; Yin, Jian

2012-06-03T23:59:59.000Z

463

Scalable Real Time Data Management for Smart Grid  

SciTech Connect (OSTI)

This paper presents GridMW, a scalable and reliable data middleware for smart grids. Smart grids promise to improve the efficiency of power grid systems and reduce green house emissions through incorporating power generation from renewable sources and shaping demand to match the supply. As a result, power grid systems will become much more dynamic and require constant adjustments, which requires analysis and decision making applications to improve the efficiency and reliability of smart grid systems.

Yin, Jian; Kulkarni, Anand V.; Purohit, Sumit; Gorton, Ian; Akyol, Bora A.

2011-12-16T23:59:59.000Z

464

Innovative Energy Efficiency, Renewable Energy, and Grid Technology...  

Energy Savers [EERE]

Innovative Energy Efficiency, Renewable Energy, and Grid Technology Update Innovative Energy Efficiency, Renewable Energy, and Grid Technology Update April 29, 2015 11:00AM to...

465

V-125: Cisco Connected Grid Network Management System Multiple...  

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

5: Cisco Connected Grid Network Management System Multiple Vulnerabilities V-125: Cisco Connected Grid Network Management System Multiple Vulnerabilities April 3, 2013 - 1:44am...

466

Illustrative Calculation of Economics for Heat Pump and "Grid...  

Energy Savers [EERE]

Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Rate...

467

Security and privacy in demand response systems in smart grid.  

E-Print Network [OSTI]

??Demand response programs are used in smart grid to improve stability of the electric grid and to reduce consumption of electricity and costs during peak… (more)

Paranjpe, Mithila

2011-01-01T23:59:59.000Z

468

Secretary Chu to Discuss Importance of Electric Grid Modernization...  

Energy Savers [EERE]

Discuss Importance of Electric Grid Modernization to U.S. Competitiveness at Gridwise Global Forum Secretary Chu to Discuss Importance of Electric Grid Modernization to U.S....

469

2014 Advanced Grid Modeling Program Peer Review Presentations...  

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

Advanced Grid Modeling Program Peer Review Presentations Now Available 2014 Advanced Grid Modeling Program Peer Review Presentations Now Available July 10, 2014 - 6:01pm Addthis...

470

STEPS: A Grid Search Methodology for Optimized Peptide Identification...  

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

A Grid Search Methodology for Optimized Peptide Identification Filtering of MSMS Database Search Results. STEPS: A Grid Search Methodology for Optimized Peptide Identification...

471

City Utilities of Springfield Missouri Comments on Smart Grid...  

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

Utilities of Springfield Missouri Comments on Smart Grid RFI: Addressing Policy and Logistical Challenges City Utilities of Springfield Missouri Comments on Smart Grid RFI:...

472

2014 International Workshop on Grid Simulator Testing | Department...  

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

the second International Workshop on Grid Simulator Testing of Energy Systems and Wind Turbine Powertrains at the Duke Energy Electric Grid Research, Innovations and Development...

473

Smart Grid RFI: Addressing Policy and Logistical Challenges  

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

efficiency of grid operations and more optimal deployment of generation resources. Demand response activities may be able to improve grid efficiency as well. On the consumer...

474

Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal...  

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

Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal Systems Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal Systems May 16, 2013 - 12:00am Addthis...

475

Electricity Grid Basics Webinar Presentation Slides and Text...  

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

Electricity Grid Basics Webinar Presentation Slides and Text Version Electricity Grid Basics Webinar Presentation Slides and Text Version Download presentation slides and a text...

476

Mitigation of Vehicle Fast Charge Grid Impacts with Renewables...  

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

Mitigation of Vehicle Fast Charge Grid Impacts with Renewables and Energy Storage Mitigation of Vehicle Fast Charge Grid Impacts with Renewables and Energy Storage 2012 DOE...

477

A National Grid Energy Storage Strategy - Electricity Advisory...  

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

A National Grid Energy Storage Strategy - Electricity Advisory Committee - January 2014 A National Grid Energy Storage Strategy - Electricity Advisory Committee - January 2014 The...

478

Hydrogen Energy Storage for Grid and Transportation Services...  

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

Energy Storage for Grid and Transportation Services Workshop Hydrogen Energy Storage for Grid and Transportation Services Workshop The U.S. Department of Energy (DOE) and Industry...

479

2012 SG Peer Review - Recovery Act: LADWP Smart Grid Regional...  

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

(HAN) demonstrations * Building to grid (B2G) energy management - interactions of the smart grid with commercial buildings. * Optimizing load reduction events and minimizing...

480

Vehicle Technologies Office Merit Review 2014: EV-Smart Grid...  

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

EV-Smart Grid Research & Interoperability Activities Vehicle Technologies Office Merit Review 2014: EV-Smart Grid Research & Interoperability Activities Presentation given by...

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


481

Optimization Online - Achieving Cost-Effective Power Grid ...  

E-Print Network [OSTI]

Dec 29, 2014 ... Abstract: Vulnerability of power grid is a critical issue in power industry. In order to understand and reduce power grid vulnerability under ...

Wei Yuan

2014-12-29T23:59:59.000Z

482

Smart Grid Investment Grant Program (SGIG) Recipient Workshop...  

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

Smart Grid Investment Grant (SGIG) Kickoff Welcome and Overview: Familiarize SGIG selectees with Grant Award Process. Smart Grid Investment Grant Program (SGIG) Recipient Workshop:...

483

Smart Grid Projects Are Improving Performance and Helping Consumers...  

Energy Savers [EERE]

Smart Grid Projects Are Improving Performance and Helping Consumers Better Manage their Energy Use Smart Grid Projects Are Improving Performance and Helping Consumers Better Manage...

484

The Smart Grid Experience: Applying Results, Reaching Beyond...  

Energy Savers [EERE]

Grid Experience: Applying Results, Reaching Beyond - Summary of Conference Proceedings (December 2014) The Smart Grid Experience: Applying Results, Reaching Beyond - Summary of...

485

Panel 4, Grid-Scale Storage Technologies: Regulatory Barriers...  

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

Grid-scale Storage Technologies Regulatory Barriers and Policy Instruments Hydrogen Energy Storage for Grid and Transportation Services May 15 th , 2014 Sacramento, CA Demand 599...

486

Recovery Act: Smart Grid Interoperability Standards and Framework...  

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

Act: Smart Grid Interoperability Standards and Framework Recovery Act: Smart Grid Interoperability Standards and Framework May 18, 2009 Locke, Chu Announce Significant Steps in...

487

Questions and Answers for the Smart Grid Investment Grant Program...  

Energy Savers [EERE]

Questions and Answers for the Smart Grid Investment Grant Program: Frequently Asked Questions Questions and Answers for the Smart Grid Investment Grant Program: Frequently Asked...

488

ASHRAE draft regarding Smart Grid RFI: Addressing Policy and...  

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

ASHRAE draft regarding Smart Grid RFI: Addressing Policy and Logistical Challenges ASHRAE draft regarding Smart Grid RFI: Addressing Policy and Logistical Challenges The American...

489

Secretary Chu Announces $620 Million for Smart Grid Demonstration...  

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

620 Million for Smart Grid Demonstration and Energy Storage Projects: Recovery Act Funding Will Upgrade the Electrical Grid, Save Energy, and Create Jobs Secretary Chu Announces...

490

Recovery Act Selections for Smart Grid Investment Grant Awards...  

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

Recovery Act Selections for Smart Grid Investment Grant Awards- By Category Updated July 2010 Recovery Act Selections for Smart Grid Investment Grant Awards- By Category Updated...

491

Addressing Policy and Logistical Challenges to smart grid Implementati...  

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

smart grid Implementation: eMeter Response to Department of Energy RFI Addressing Policy and Logistical Challenges to smart grid Implementation: eMeter Response to Department of...

492

Progress Energy draft regarding Smart Grid RFI: Addressing Policy...  

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

Progress Energy draft regarding Smart Grid RFI: Addressing Policy and Logistical Challenges Progress Energy draft regarding Smart Grid RFI: Addressing Policy and Logistical...

493

Questions and Answers for the Smart Grid Investment Grant Program...  

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

Questions and Answers for the Smart Grid Investment Grant Program: Applicability of Buy American Provision of Section 1605 of the Recovery Act to Projects Under the Smart Grid...

494

Recovery Act Selections for Smart Grid Investment Grant Awards...  

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

Category Updated November 2011 Recovery Act Selections for Smart Grid Investment Grant Awards - By Category Updated November 2011 List of selections for the Smart Grid Investment...

495

Southern Company: DOE Smart Grid RFI Addressing Policy and Logistical...  

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

Southern Company: DOE Smart Grid RFI Addressing Policy and Logistical Challenges Southern Company: DOE Smart Grid RFI Addressing Policy and Logistical Challenges Southern Company:...

496

Recovery Act Selections for Smart Grid Investment Grant Awards...  

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

State - Updated November 2011 Recovery Act Selections for Smart Grid Investment Grant Awards - By State - Updated November 2011 List of selections for the Smart Grid Investment...

497

Steffes Corporation Smart Grid RFI: Addressing Policy and Logistical...  

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

Steffes Corporation Smart Grid RFI: Addressing Policy and Logistical Challenges Steffes Corporation Smart Grid RFI: Addressing Policy and Logistical Challenges Steffes Corporation...

498

Addressing Policy and Logistical Challenges to Smart Grid Implementati...  

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

Smart Grid Implementation: Federal Register Notice Volume 75, No. 180 - Sep. 17, 2010 Addressing Policy and Logistical Challenges to Smart Grid Implementation: Federal Register...

499

Recovery Act Selections for Smart Grid Invesment Grant Awards...  

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

Recovery Act Selections for Smart Grid Invesment Grant Awards- By Category Updated July 2010 Recovery Act Selections for Smart Grid Invesment Grant Awards- By Category Updated July...

500

Pepco Holdings, Inc. Smart Grid RFI: Addressing Policy and Logistical...  

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

Holdings, Inc. Smart Grid RFI: Addressing Policy and Logistical Challenges Pepco Holdings, Inc. Smart Grid RFI: Addressing Policy and Logistical Challenges Pepco Holdings, Inc....