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1

Steven Weinberg, Weak Interactions, and Electromagnetic Interactions  

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

Steven Weinberg and Steven Weinberg and Weak and Electromagnetic Interactions Resources with Additional Information Steven Weinberg Courtesy Dr. Steven Weinberg Steven "Weinberg is a professor of physics and astronomy at UT [The University of Texas] Austin and is founding director of the Theory Group in the College of Natural Sciences. [He is] well known for his development of a field theory that unifies the electromagnetic and weak nuclear forces, and for other major contributions to physics and cosmology ... Weinberg's work has been honored with numerous prizes, including the Nobel Prize in Physics in 1979 and the National Medal of Science in 1991. Weinberg is the author of the prize-winning book The First Three Minutes: A Modern View of the Origin of the Universe (which has been translated into 22 foreign languages) as well as Gravitation and Cosmology, The Discovery of Subatomic Particles, Dreams of a Final Theory and The Quantum Theory of Fields. ... Weinberg was the recipient of the Scientist as Poet prize from Rockefeller University for "extraordinary achievements in conveying - with passionate clarity - the ideas, history, explanatory power and aesthetic dimensions of fundamental physics." The citation mentioned two of Weinberg's books.

2

Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Nuclear Anapole Moment  

E-Print Network [OSTI]

Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Nuclear Anapole Moment;Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Plan of the talk Weak Interactions in Atoms Charged and Neutral Currents. Effective P-odd Hamiltonian Nuclear Anapole Moment

Pines, Alexander

3

The Weak Interactions of the Muon  

Science Journals Connector (OSTI)

20 April 1965 research-article The Weak Interactions of the Muon R. H. Dalitz The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. www.jstor.org

1965-01-01T23:59:59.000Z

4

Weak interaction studies using resonance ionization spectroscopy  

SciTech Connect (OSTI)

Important developments in laser sources for the vacuum ultraviolet (VUV) region of the spectrum are making it possible to carry out resonance ionization of some of the noble gases. It has already been shown that xenon can be ionized in a two-photon allowed excitation from the ground state. Recently a new method of generating radiation by four-wave mixing in mercury vapor enables excitation of xenon in a one-photon resonance process. With these new laser sources we expect to have effective ionization volumes of 10/sup -3/ to 10/sup -2/ cm/sup 3/ for the cases of argon, krypton, and xenon. This has important consequences in weak interaction physics and environmental research.

Payne, M.G.; Hurst, G.S.

1982-01-01T23:59:59.000Z

5

POSTDOCTORAL RESEARCH ASSOCIATE Weak Interactions Group  

E-Print Network [OSTI]

double beta decay experiment under construction at Gran Sasso National&D for a future South Pole deployment. CUORE is a cryogenic bolometer-based neutrinoless

Devoret, Michel H.

6

Nuclear Constraints on the Weak Nucleon-Nucleon Interaction  

E-Print Network [OSTI]

I discuss the current status of efforts to constrain the strangeness-conserving weak hadronic interaction, which can be isolated in nuclear systems because of the associated parity violation.

W. C. Haxton

2008-02-21T23:59:59.000Z

7

Weak coherence of groups and finite decomposition complexity.  

E-Print Network [OSTI]

The weak regular coherence (WRC) property of a finitely generated group $\\Gamma$ was introduced by G. Carlsson and this author to play the role of a weakening of Waldhausen's regular coherence as part of computation of the integral $K$-theoretic assembly map. This property is a coarse invariant of the word metric. It was shown that groups with finite asymptotic dimension (FAD) have this property. A new class of metric spaces (sFDC) was introduced recently by A. Dranishnikov and M. Zarichnyi. This class includes most notably the spaces with finite decomposition complexity (FDC) studied by E. Guentner, D. Ramras, R. Tessera, and G. Yu and so is larger than FAD. The main theorem of this paper shows that a group that belongs to sFDC is weakly regular coherent. As a consequence, groups $\\Gamma$ with sFDC have some remarkable algebraic and topological properties. One such property is vanishing of the Whitehead group $\\textit{Wh} (\\Gamma)$ for any group that has finite $K(\\Gamma,1)$ and FDC, which verifies a long-standing conjecture for this class of groups.

Boris Goldfarb

8

Phase sensitivity of slow electrons to interactions with weak potentials  

SciTech Connect (OSTI)

The interaction of very slow electrons with weak potentials is investigated in an exactly soluble, one-dimensional quantum mechanical model. Slow electrons are produced by a decelerating ramp potential, as in experimental mirror electron microscopy, so the electrons can interact with a weak field as they slow and reverse direction. Our model provides a wave mechanical interpretation of this turning point region and suggests the possibility of imaging optical fields utilizing the phase of electron matter waves.

Kennedy, S. M.; Jesson, D. E.; Morgan, M. J.; Smith, A. E.; Barker, P. F. [School of Physics, Monash University, Victoria, 3800 (Australia); Department of Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH144AS (United Kingdom)

2006-10-15T23:59:59.000Z

9

Personality and group interaction  

E-Print Network [OSTI]

that "prize Chips will be awarded equally to each person in the group based on the total number of blocks still standing in the tower at the end of the 15 seconds". b) In the contrient condition, subjects were told that "Prize Chips will be awarded only... to the individual with the most blocks still standing in the tower at the end of the 15 seconds. If there are any ties in terms of the number blocks on the tower and there is no clear winner, then no prize chips will be distributed". 6. Only one tower may...

Hair, Elizabeth Catherine

1996-01-01T23:59:59.000Z

10

A comparison of weak-turbulence and PIC simulations of weak electron-beam plasma interaction  

E-Print Network [OSTI]

Quasilinear theory has long been used to treat the problem of a weak electron beam interacting with plasma and generating Langmuir waves. Its extension to weak-turbulence theory treats resonant interactions of these Langmuir waves with other plasma wave modes, in particular ion-sound waves. These are strongly damped in plasma of equal ion and electron temperatures, as sometimes seen in, for example, the solar corona and wind. Weak turbulence theory is derived in the weak damping limit, with a term describing ion-sound wave damping then added. In this paper we use the EPOCH particle-in-cell code to numerically test weak turbulence theory for a range of electron-ion temperature ratios. We find that in the cold ion limit the results agree well, but increasing ion temperature the three-wave resonance becomes broadened in proportion to the ion-sound wave damping rate. This may be important in, for example, the theory of solar radio bursts, where the spectrum of Langmuir waves is critical. Additionally we establish...

Ratcliffe, Heather; Rozenan, Mohammed B Che; Nakariakov, Valery

2014-01-01T23:59:59.000Z

11

Weak interactions of quarks and leptons: experimental status  

SciTech Connect (OSTI)

The present experimental status of weak interactions is discussed with emphasis on the problems and questions and on the possible lines of future investigations. Major topics include; (1) the quark mixing matrix, (2) CP violation, (3) rare decays, (4) the lepton sector, and (5) right handed currents. 118 references. (WHK)

Wojcicki, S.

1984-09-01T23:59:59.000Z

12

Tsung-Dao Lee, Weak Interactions, and Nonconservation of Parity  

Office of Scientific and Technical Information (OSTI)

Tsung-Dao Lee, Weak Interactions, and Nonconservation of Parity Tsung-Dao Lee, Weak Interactions, and Nonconservation of Parity Resources with Additional Information Tsung-Dao Lee Courtesy of Brookhaven National Laboratory T. D. Lee "has devoted his long career to the study of the theoretical aspects of particle and nuclear physics. In 1957, Lee and Chen Ning Yang won the Nobel Prize in physics for disproving a tenet of physics known as the conservation of parity. Their finding was based on research carried out at Brookhaven's particle accelerator, the Cosmotron, while they were visiting scientists at the Laboratory in 1956. In 1997, forty years after receiving the Nobel Prize, Lee returned to Brookhaven Lab as Director of the RIKEN BNL Research Center. Japan's Institute of Physical and Chemical Research (RIKEN) and Brookhaven formed the collaboration to work on basic questions in physics. In addition to developing physics theory, the collaboration studies data produced by Brookhaven's newest accelerator, the Relativistic Heavy Ion Collider, to understand the properties of quark-gluon plasma, a state of matter that scientists theorize existed near the beginning of the Universe.

13

DYNAMIC INTERACTION FACTORS FOR FLOATING PILE GROUPS  

E-Print Network [OSTI]

-numerical formulation for two ideal- ized soil profiles (a homogeneous half-space and a half-space with modulus pro interaction factors for static deformation analysis of pile groups. INTRODUCTION Under static working loads) the sharing among individual piles of the load applied at the pile cap is generally uneven, with the corner

Entekhabi, Dara

14

Spin-Component Scaling Methods for Weak and Stacking Interactions  

Science Journals Connector (OSTI)

J. Grant Hill and James A. Platts * ... The prototypical model for ?-stacking interactions is the benzene dimer, and as such it has been investigated exhaustively within the limits of currently available methodology and computer hardware (see refs 22?26 and references therein). ... Such calculations rapidly become prohibitively computationally demanding, especially when the additional time necessary to compute a counterpoise correction27 (CP) for basis set superposition error (BSSE) is included. ...

J. Grant Hill; James A. Platts

2006-11-29T23:59:59.000Z

15

Weak interaction corrections to hadronic top quark pair production: contributions from quark-gluon and $b \\bar b$ induced reactions  

E-Print Network [OSTI]

As an addendum to our previous evaluation of the weak-interaction corrections to hadronic top-quark pair production we determine the leading weak-interaction contributions due to the subprocesses $b {\\bar b} \\to t {\\bar t}$ and $g q ({\\bar q}) \\to t {\\bar t} q ({\\bar q})$. For several distributions in $t {\\bar t}$ production at the LHC we find that these contributions are non-negligible as compared to the weak corrections from the other partonic subprocesses.

Werner Bernreuther; Michael Fuecker; Zong-Guo Si

2008-04-08T23:59:59.000Z

16

I=12 contributions to ??+N???+N+?0 in the Weinberg weak-interaction model  

Science Journals Connector (OSTI)

We use a detailed dispersion-theoretic model for pion production in the (3, 3)-resonance region to calculate the ratio R=?(??+n???+n+?0)+?(??+p???+p+?0)2?(??+n??-+p+?0) in the Weinberg weak-interaction theory. We find that I=12 contributions do not substantially modify the earlier static model calculation of R given by B. W. Lee.

Stephen L. Adler

1974-01-01T23:59:59.000Z

17

Lattice-Boltzmann simulation of laser interaction with weakly ionized helium plasmas  

SciTech Connect (OSTI)

This paper presents a lattice Boltzmann method for laser interaction with weakly ionized plasmas considering electron impact ionization and three-body recombination. To simulate with physical properties of plasmas, the authors' previous work on the rescaling of variables is employed and the electromagnetic fields are calculated from the Maxwell equations by using the finite-difference time-domain method. To calculate temperature fields, energy equations are derived separately from the Boltzmann equations. In this way, we attempt to solve the full governing equations for plasma dynamics. With the developed model, the continuous-wave CO{sub 2} laser interaction with helium is simulated successfully.

Li Huayu; Ki, Hyungson [Department of Mechanical Engineering, Michigan State University, East Lansing, Michigan 48824-1226 (United States); School of Mechanical and Advanced Materials Engineering, Ulsan National Institute of Science and Technology, Ulsan (Korea, Republic of)

2010-07-15T23:59:59.000Z

18

Weak Interaction Models with New Quarks and Right-handed Currents  

DOE R&D Accomplishments [OSTI]

We discuss various weak interaction issues for a general class of models within the SU(2) x U(1) gauge theory framework, with special emphasis on the effects of right-handed, charged currents and of quarks bearing new quantum numbers. In particular we consider the restrictions on model building which are imposed by the small KL - KS mass difference and by the .I = = rule; and we classify various possibilities for neutral current interactions and, in the case of heavy mesons with new quantum numbers, various possibilities for mixing effects analogous to KL - KS mixing.

Wilczek, F. A.; Zee, A.; Kingsley, R. L.; Treiman, S. B.

1975-06-00T23:59:59.000Z

19

Bis(pentamethylcyclopentadienyl)ytterbium: An investigation of weak interactions in solution using multinuclear NMR spectroscopy  

SciTech Connect (OSTI)

NMR spectroscopy is ideal for studying weak interactions (formation enthalpy {le}20 kcal/mol) in solution. The metallocene bis(pentamethylcyclopentadienyl)ytterbium, Cp*{sub 2}Yb, is ideal for this purpose. cis-P{sub 2}PtH{sub 2}complexes (P = phosphine) were used to produce slow-exchange Cp*{sub 2}YbL adducts for NMR study. Reversible formation of (P{sub 2}PtH){sub 2} complexes from cis-P{sub 2}PtH{sub 2} complexes were also studied, followed by interactions of Cp*{sub 2}Yb with phosphines, R{sub 3}PX complexes. A NMR study was done on the interactions of Cp*{sub 2}Yb with H{sub 2}, CH{sub 4}, Xe, CO, silanes, stannanes, C{sub 6}H{sub 6}, and toluene.

Schwartz, D.J.

1995-07-01T23:59:59.000Z

20

Crossover from 2D to 3D in a Weakly Interacting Fermi Gas  

Science Journals Connector (OSTI)

We have studied the transition from two to three dimensions in a low temperature weakly interacting Li6 Fermi gas. Below a critical atom number N2D only the lowest transverse vibrational state of a highly anisotropic oblate trapping potential is occupied and the gas is two dimensional. Above N2D the Fermi gas enters the quasi-2D regime where shell structure associated with the filling of individual transverse oscillator states is apparent. This dimensional crossover is demonstrated through measurements of the cloud size and aspect ratio versus atom number.

P. Dyke; E. D. Kuhnle; S. Whitlock; H. Hu; M. Mark; S. Hoinka; M. Lingham; P. Hannaford; C. J. Vale

2011-03-11T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

Solar-bound weakly interacting massive particles: a no-frills phenomenology  

E-Print Network [OSTI]

The case for a stable population of solar-bound Earth-crossing Weakly Interacting Massive Particles (WIMPs) is reviewed. A practical general expression for their speed distribution in the laboratory frame is derived under basic assumptions. If such a population exists -even with a conservative phase-space density-, the next generation of large-mass, low-threshold underground bolometers should bring about a sizable enhancement in WIMP sensitivity. Finally, a characteristic yearly modulation in their recoil signal, arising from the ellipticity of the Earth's orbit, is presented.

Juan I. Collar

1999-01-22T23:59:59.000Z

22

Higgs Gravitational Interaction, Weak Boson Scattering, and Higgs Inflation in Jordan and Einstein Frames  

E-Print Network [OSTI]

We study gravitational interaction of Higgs boson through the unique dimension-4 operator $\\xi H^\\dag H R$, with $H$ the Higgs doublet and $R$ the Ricci scalar curvature. We analyze the effect of this dimensionless nonminimal coupling $\\xi$ on weak gauge boson scattering in both Jordan and Einstein frames. We explicitly establish the longitudinal-Goldstone boson equivalence theorem with nonzero $\\xi$ coupling in both frames, and analyze the unitarity constraints. We study the $\\xi$-induced weak boson scattering cross sections at O(1-30)TeV scales, and propose to probe the Higgs-gravity coupling via weak boson scattering experiments at the LHC(14TeV) and the next generation pp colliders (50-100TeV). We further extend our study to Higgs inflation, and quantitatively derive the perturbative unitarity bounds via coupled channel analysis, under large field background at the inflation scale. We analyze the unitarity constraints on the parameter space in both the conventional Higgs inflation and the improved models in light of the recent BICEP2 data.

Jing Ren; Zhong-Zhi Xianyu; Hong-Jian He

2014-04-17T23:59:59.000Z

23

Aquatic Ecology Aquatic ecology group studies ecological interactions  

E-Print Network [OSTI]

Aquatic Ecology Aquatic ecology group studies ecological interactions between biota and their environment in freshwater and marine ecosystems. The group focuses particularly on the ecological interactions and their underlying ecological processes necessary to sustain ecosystem structure and function in their natural state

24

Role of exchange in density-functional theory for weakly interacting systems: Quantum Monte Carlo analysis of electron density and interaction energy  

E-Print Network [OSTI]

We analyze the density-functional theory (DFT) description of weak interactions by employing diffusion and reptation quantum Monte Carlo (QMC) calculations, for a set of benzene-molecule complexes. While the binding energies ...

Grossman, Jeffrey C.

25

Electron-electron interaction, weak localization and spin valve effect in vertical-transport graphene devices  

SciTech Connect (OSTI)

We fabricated a vertical structure device, in which graphene is sandwiched between two asymmetric ferromagnetic electrodes. The measurements of electron and spin transport were performed across the combined channels containing the vertical and horizontal components. The presence of electron-electron interaction (EEI) was found not only at low temperatures but also at moderate temperatures up to ?120?K, and EEI dominates over weak localization (WL) with and without applying magnetic fields perpendicular to the sample plane. Moreover, spin valve effect was observed when magnetic filed is swept at the direction parallel to the sample surface. We attribute the EEI and WL surviving at a relatively high temperature to the effective suppress of phonon scattering in the vertical device structure. The findings open a way for studying quantum correlation at relatively high temperature.

Long, Mingsheng; Gong, Youpin; Wei, Xiangfei; Zhu, Chao; Xu, Jianbao; Liu, Ping; Guo, Yufen; Li, Weiwei; Liu, Liwei, E-mail: lwliu2007@sinano.ac.cn [Key Laboratory of Nanodevices and Applications-CAS and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123 (China); Liu, Guangtong [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2014-04-14T23:59:59.000Z

26

Absence of Right-Handed Neutrino in Weak Interactions: Explanation via Nonlinear Electroweak Model  

E-Print Network [OSTI]

The nonlinear SU(2) electroweak model is used to explain the absence of the right-handed neutrino in weak interactions. Two covariant eigenvalue constraints which affect the transformation lead to two classes of right-handed leptons, and make possible invariant mass terms without the Higgs doublet. A covariant picture of neutrinos with mass is presented. A new invariant form for the boson potentials is described in which the boson mass terms arises via the adjoint field. This model also indicates a different region of matter involving coupled leptons that are "blind" to the massless electromagnetic field but "see" four massive potentials that are themselves blind to the electromagnetic field. We argue that these more difficult to detect "dark" fields provide a possible contribution to the missing mass.

Bill Dalton

2010-06-21T23:59:59.000Z

27

Second order corrections to mean field evolution for weakly interacting Bosons in the case of 3-body interactions  

E-Print Network [OSTI]

In this paper, we consider the Hamiltonian evolution of N weakly interacting Bosons. Assuming triple collisions, its mean field approximation is given by a quintic Hartree equation. We construct a second order correction to the mean field approximation using a kernel k(t,x,y) and derive an evolution equation for k. We show the global existence for the resulting evolution equation for the correction and establish an apriori estimate comparing the approximation to the exact Hamiltonian evolution. Our error estimate is global and uniform in time. Comparing with the work in [22,12,13] where the error estimate grows in time, our approximation tracks the exact dynamics for all time with an error of the order O(1/$\\sqrt{N}$).

Xuwen Chen

2010-11-27T23:59:59.000Z

28

Effects of electron-electron and electron-phonon interactions in weakly disordered conductors and heterostructures  

Science Journals Connector (OSTI)

We investigate quantum corrections to the conductivity due to the interference of electron-electron (electron-phonon) scattering and elastic electron scattering from impurities and defects in weakly disordered conductors. The interference corrections are proportional to the Drude conductivity and have various temperature dependences. The electron-electron interaction results in a T2 ln T correction in bulk conductors. In a quasi-two-dimensional (quasi-2D) conductor, d1) this correction is linear in temperature and differs from that for 2D electrons [G. Zala et al., Phys. Rev. B 64, 214204 (2001)] by a numerical factor. In quasi-one-dimensional conductors with 3D and 2D electron spectra (a wire with radius rinteraction in the triplet channel. The electron interaction via exchange of virtual phonons gives the T2 ln T correction. In bulk semiconductors the interaction of electrons with thermal phonons via the screened deformation potential results in a T6 term and via unscreened deformation potential leads to a T2 term. For a two-dimensional electron gas in heterostructures, the screened deformation potential gives rise to a T4 term and the unscreened deformation potential leads to a T2 ln T term. At low temperatures the interference of electron-electron and electron-impurity scattering dominates in the temperature-dependent conductivity. At higher temperatures the conductivity is determined by the electron-phonon-impurity interference, which prevails over pure electron-phonon scattering in a wide temperature range, which extends with increasing disorder.

A. Sergeev; M. Yu. Reizer; V. Mitin

2004-02-18T23:59:59.000Z

29

Exploring Collaboration with Group Pointer Interaction Florian Vogt1  

E-Print Network [OSTI]

Exploring Collaboration with Group Pointer Interaction Florian Vogt1 , Justin Wong1 , Barry A. Po2, ritchie, ksbooth}@cs.ubc.ca Abstract Enabling group collaboration is important in computer graphics today. We have developed a framework that supports multiple pointing devices to explore the collaborative

British Columbia, University of

30

New physics in the weak interaction of $\\bar B\\to D^{(*)}?\\bar?$  

E-Print Network [OSTI]

Recent experimental results on exclusive semi-tauonic B meson decays, B -> D(*) tau nu, showing sizable deviations from the standard model prediction, suggest a new physics in which the structure of the relevant weak charged interaction may differ from that of the standard model. We study the exclusive semi-tauonic B decays in a model-independent manner using the most general set of four-Fermi interactions in order to clarify possible structures of the charged current in new physics. It turns out that correlations among observables including tau and D* polarizations and q^2 distributions are useful to distinguish possible new physics operators. Further, we investigate some interesting models to exhibit the advantage of our model-independent analysis. As a result, we find that two Higgs doublet models without tree-level FCNC and the minimal supersymmetric standard model with R-parity violation are unlikely to explain the present experimental data, while two Higgs doublet models with FCNC and a leptoquark model are consistent with the data.

Minoru Tanaka; Ryoutaro Watanabe

2012-12-09T23:59:59.000Z

31

Regularity lifting of weak solutions for nonlinear sub-Laplace equations on homogeneous groups  

Science Journals Connector (OSTI)

Let G be a homogeneous group, and let X 1, X 2, … , X m be left invariant real vector fields being homogeneous of degree one on

Xiaojing Feng; Pengcheng Niu

2012-04-01T23:59:59.000Z

32

WEAKLY ALMOST PERIODIC FUNCTIONS, MODEL-THEORETIC STABILITY, AND MINIMALITY OF TOPOLOGICAL GROUPS  

E-Print Network [OSTI]

examples from analysis such as the separable, infinite-dimensional Hilbert space, the measure algebra field at the interface of model theory, permutation group theory, combinatorics, and, more recently of a standard probability space, and separable atomless Lp Banach lattices (p

Tsankov, Todor

33

Generic Approach for Dispersing Single-Walled Carbon Nanotubes:? The Strength of a Weak Interaction  

Science Journals Connector (OSTI)

A generic noncovalent approach for dispersing high concentrations of individual single-walled carbon nanotubes (SWNT) in organic as well as aqueous solutions of synthetic block copolymers is presented. It is suggested that a weak, long-ranged entropic ...

Rina Shvartzman-Cohen; Yael Levi-Kalisman; Einat Nativ-Roth; Rachel Yerushalmi-Rozen

2004-06-24T23:59:59.000Z

34

Single or functionalized fullerenes interacting with heme group  

SciTech Connect (OSTI)

The heme group is responsible for iron transportation through the bloodstream, where iron participates in redox reactions, electron transfer, gases detection etc. The efficiency of such processes can be reduced if the whole heme molecule or even the iron is somehow altered from its original oxidation state, which can be caused by interactions with nanoparticles as fullerenes. To verify how such particles alter the geometry and electronic structure of heme molecule, here we report first principles calculations based on density functional theory of heme group interacting with single C{sub 60} fullerene or with C{sub 60} functionalized with small functional groups (?CH{sub 3}, ?COOH, ?NH{sub 2}, ?OH). The calculations shown that the system heme + nanoparticle has a different spin state in comparison with heme group if the fullerene is functionalized. Also a functional group can provide a stronger binding between nanoparticle and heme molecule or inhibit the chemical bonding in comparison with single fullerene results. In addition heme molecule loses electrons to the nanoparticles and some systems exhibited a geometry distortion in heme group, depending on the binding energy. Furthermore, one find that such nanoparticles induce a formation of spin up states in heme group. Moreover, there exist modifications in density of states near the Fermi energy. Although of such changes in heme electronic structure and geometry, the iron atom remains in the heme group with the same oxidation state, so that processes that involve the iron might not be affected, only those that depend on the whole heme molecule.

Costa, Wallison Chaves; Diniz, Eduardo Moraes, E-mail: eduardo.diniz@ufma.br [Departamento de Física, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805, São Luís - MA (Brazil)

2014-09-15T23:59:59.000Z

35

Measurement of the Michel Parameter xi" in Polarized Muon Decay and Implications on Exotic Couplings of the Leptonic Weak Interaction  

E-Print Network [OSTI]

The Michel parameter xi" has been determined from a measurement of the longitudinal polarization of positrons emitted in the decay of polarized and depolarized muons. The result, xi" = 0.981 +- 0.045stat +- 0.003syst, is consistent with the Standard Model prediction of unity, and provides an order of magnitude improvement in the relative precision of this parameter. This value sets new constraints on exotic couplings beyond the dominant V-A description of the leptonic weak interaction.

R. Prieels; O. Naviliat-Cuncic; P. Knowles; P. Van Hove; X. Morelle; J. Egger; J. Deutsch; J. Govaerts; W. Fetscher; K. Kirch; J. Lang

2014-08-07T23:59:59.000Z

36

Electron-electron interaction effect on the conductivity and the Hall conductivity of weakly disordered electron systems  

Science Journals Connector (OSTI)

The effect of the electron-electron Coulomb interaction on the conductivity and Hall conductivity of weakly disordered (T?>1, where ? is the electron mean free path) three- and two-dimensional electron systems is studied. We find that (i) temperature-dependent interaction corrections to the impurity resistivity and the Hall coefficient are positive in three and two dimensions; (ii) in two dimensions, gapless plasmons and particle-hole excitations both contribute to the electron-electron-impurity interference correction, to the resistivity; and (iii) in two-dimensional electron systems such as GaAs heterojunctions, the electron-electron interaction gives the leading temperature-dependent correction to the impurity conductivity and the Hall conductivity more important than the corresponding corrections from the piezoelectric electron-phonon interaction.

Michael Reizer

1998-05-15T23:59:59.000Z

37

Verification, optimization and refinement of a direct-inverse transonic wing design method including weak viscous interaction  

E-Print Network [OSTI]

and Refinement of a. Direct-Inverse Transonic Wing Design Method Including Weak Viscous Interaction. (August 1989) Robert R. Ratcliff, B. S. , Texas A&M University Chair oi' Advisory Committee: Dr. Leland A. Carlson New developments in the direct-inverse wing... AND DISCUSSION . 92 VI V. 1 Bound&ary L&iyer and Wake Effects . . V. 2 Spanwise Grid Skewness V. 3 Wing Planform Effects V. 4 Initial Profile Efi'ects V. 5 Pressure Distribution Compatibility V. 6 Grid Refinement Effects . . V. 7 Fixed Trailing Edge...

Ratcliff, Robert R.

2012-06-07T23:59:59.000Z

38

Measurement of the $?$-asymmetry parameter of $^{67}$Cu in search for tensor type currents in the weak interaction  

E-Print Network [OSTI]

Precision measurements at low energy search for physics beyond the Standard Model in a way complementary to searches for new particles at colliders. In the weak sector the most general $\\beta$ decay Hamiltonian contains, besides vector and axial-vector terms, also scalar, tensor and pseudoscalar terms. Current limits on the scalar and tensor coupling constants from neutron and nuclear $\\beta$ decay are on the level of several percent. The goal of this paper is extracting new information on tensor coupling constants by measuring the $\\beta$-asymmetry parameter in the pure Gamow-Teller decay of $^{67}$Cu, thereby testing the V-A structure of the weak interaction. An iron sample foil into which the radioactive nuclei were implanted was cooled down to milliKelvin temperatures in a $^3$He-$^4$He dilution refrigerator. An external magnetic field of 0.1 T, in combination with the internal hyperfine magnetic field, oriented the nuclei. The anisotropic $\\beta$ radiation was observed with planar high purity germanium detectors operating at a temperature of about 10\\,K. An on-line measurement of the $\\beta$ asymmetry of $^{68}$Cu was performed as well for normalization purposes. Systematic effects were investigated using Geant4 simulations. The experimental value, $\\tilde{A}$ = 0.587(14), is in agreement with the Standard Model value of 0.5991(2) and is interpreted in terms of physics beyond the Standard Model. The limits obtained on possible tensor type charged currents in the weak interaction hamiltonian are -0.045 $< (C_T+C'_T)/C_A <$ 0.159 (90\\% C.L.). The obtained limits are comparable to limits from other correlation measurements in nuclear $\\beta$ decay and contribute to further constraining tensor coupling constants.

G. Soti; F. Wauters; M. Breitenfeldt; P. Finlay; P. Herzog; A. Knecht; U. Köster; I. S. Kraev; T. Porobic; P. N. Prashanth; I. S. Towner; C. Tramm; D. Zákoucký; N. Severijns

2014-09-05T23:59:59.000Z

39

Study of single-pion production by weak charged currents in low-energy ?d interactions  

Science Journals Connector (OSTI)

This paper gives the results of a study of single-pion production by the weak charged current utilizing the wide-band muon-type-neutrino beam at the Argonne Zero Gradient Synchrotron. The data were obtained from hydrogen and deuterium fillings of the 12-ft bubble chamber. The methods of event selection and separation from background are given as are the details of the corrections and systematic effects in the data sample. The energy-dependent cross sections and differential distributions are presented for the three single-pion production reactions ?p??-p?+, ?n??-p?0, and ?n??-n?+. An isospin decomposition shows that the ratio of I=12 to I=32 amplitudes is 0.68±0.04 with a relative phase of (90.7±4.6)° for M(N?)<1.4 GeV. This agrees with theoretical models, particularly the detailed calculation of Adler. Using the data of the reaction ?p??-p?+, the characteristic mass of the nucleon axial-vector elastic form factor is measured to be 0.98-0.03+0.06 GeV when analyzed within the context of the Adler model. The data are also compared to other parametrizations of the nucleon axial-vector form factor.

G. M. Radecky; V. E. Barnes; D. D. Carmony; A. F. Garfinkel; M. Derrick; E. Fernandez; L. Hyman; G. Levman; D. Koetke; B. Musgrave; P. Schreiner; R. Singer; A. Snyder; S. Toaff; S. J. Barish; A. Engler; R. W. Kraemer; K. Miller; B. J. Stacey; R. Ammar; D. Coppage; D. Day; R. Davis; N. Kwak; R. Stump

1982-03-01T23:59:59.000Z

40

Evaluating interaction energies of weakly bonded systems using the Buckingham-Hirshfeld method  

SciTech Connect (OSTI)

We present the finalized Buckingham-Hirshfeld method (BHD-DFT) for the evaluation of interaction energies of non-bonded dimers with Density Functional Theory (DFT). In the method, dispersion energies are evaluated from static multipole polarizabilities, obtained on-the-fly from Coupled Perturbed Kohn-Sham calculations and partitioned into diatomic contributions using the iterative Hirshfeld partitioning method. The dispersion energy expression is distributed over four atoms and has therefore a higher delocalized character compared to the standard pairwise expressions. Additionally, full multipolar polarizability tensors are used as opposed to effective polarizabilities, allowing to retain the anisotropic character at no additional computational cost. A density dependent damping function for the BLYP, PBE, BP86, B3LYP, and PBE0 functionals has been implemented, containing two global parameters which were fitted to interaction energies and geometries of a selected number of dimers using a bi-variate RMS fit. The method is benchmarked against the S22 and S66 data sets for equilibrium geometries and the S22x5 and S66x8 data sets for interaction energies around the equilibrium geometry. Best results are achieved using the B3LYP functional with mean average deviation values of 0.30 and 0.24 kcal/mol for the S22 and S66 data sets, respectively. This situates the BHD-DFT method among the best performing dispersion inclusive DFT methods. Effect of counterpoise correction on DFT energies is discussed.

Krishtal, A. [Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Straße 52, D-67663 Kaiserslautern (Germany)] [Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Straße 52, D-67663 Kaiserslautern (Germany); Van Alsenoy, C. [Department of Chemistry, University of Antwerp, Universiteitsplein 1, B2610 Antwerp (Belgium)] [Department of Chemistry, University of Antwerp, Universiteitsplein 1, B2610 Antwerp (Belgium); Geerlings, P. [Algemene Chemie, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels (Belgium)] [Algemene Chemie, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels (Belgium)

2014-05-14T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

Weakly interacting two-dimensional system of dipoles: Limitations of the mean-field theory  

Science Journals Connector (OSTI)

We consider a homogeneous two-dimensional Bose gas with repulsive dipole-dipole interactions. The ground-state equation of state, calculated using the diffusion Monte Carlo method, shows quantitative differences from the predictions of the commonly used Gross-Pitaevskii mean-field theory. The static structure factor, pair distribution function, and condensate fraction are calculated in a wide range of the gas parameter. Differences from mean-field theory are reflected in the frequency of the lowest “breathing” mode for harmonically trapped systems.

G. E. Astrakharchik, J. Boronat, J. Casulleras, I. L. Kurbakov, and Yu. E. Lozovik

2007-06-29T23:59:59.000Z

42

Weakly interacting massive particle diffusion in the solar system including solar depletion and its effect on Earth capture rates  

Science Journals Connector (OSTI)

Weakly interacting massive particles (WIMPs) can be captured by the Earth, where they eventually sink to the core, annihilate, and produce, e.g., neutrinos that can be searched for with neutrino telescopes. The Earth is believed to capture WIMPs not dominantly from the Milky Way halo directly, but instead from a distribution of WIMPs that have diffused around in the solar system due to gravitational interactions with the planets in the solar system. Recently, doubts have been raised about the lifetime of these WIMP orbits due to solar capture. We investigate this issue here by detailed numerical simulations. Compared to earlier estimates, we find that the WIMP velocity distribution is significantly suppressed below about 70 km/s, which results in a suppression of the capture rates mainly for heavier WIMPs (above ?100 GeV). At 1 TeV and above the reduction is almost a factor of 10. We apply these results to the case where the WIMP is a supersymmetric neutralino and find that, within the minimal supersymmetric standard model, the annihilation rates and thus the neutrino fluxes are reduced even more than the capture rates. At high masses (above ?1 TeV), the suppression is almost two orders of magnitude. This suppression will make the detection of neutrinos from heavy WIMP annihilations in the Earth much harder compared to earlier estimates.

Johan Lundberg and Joakim Edsjö

2004-06-02T23:59:59.000Z

43

Localized Wave Functions and the Interaction Potential between Electronic Groups  

Science Journals Connector (OSTI)

It is shown that the Schrödinger equation for electronic wave functions can be modified so that its solutions describe a molecule as a collection of interacting atoms or other units. The interaction potential between electrons localized in different units is the weakest one possible that is consistent with the constraint that the corresponding localized wave function yield upon symmetry projection one solution to the Schrödinger equation. The binding energy of the system can be calculated directly.

William H. Adams

1974-05-20T23:59:59.000Z

44

The Shell Model, the Renormalization Group and the Two-Body Interaction  

E-Print Network [OSTI]

The no-core shell model and the effective interaction $V_{{\\rm low} k}$ can both be derived using the Lee-Suzuki projection operator formalism. The main difference between the two is the choice of basis states that define the model space. The effective interaction $V_{{\\rm low} k}$ can also be derived using the renormalization group. That renormalization group derivation can be extended in a straight forward manner to also include the no-core shell model. In the nuclear matter limit the no-core shell model effective interaction in the two-body approximation reduces identically to $V_{{\\rm low} k}$. The same considerations apply to the Bloch-Horowitz version of the shell model and the renormalization group treatment of two-body scattering by Birse, McGovern and Richardson.

B. K. Jennings

2005-04-25T23:59:59.000Z

45

Energy efficiency advocacy groups: A study of selected interactive efforts and independent initiatives  

SciTech Connect (OSTI)

Non-utility groups participate in a myriad of activities--initiated by themselves and others--aimed at influencing the policies and actions of utilities and their regulators related to Integrated Resource Planning (IRP) and Demand-Side Management (DSM). Some of these activities are not directed toward a particular regulatory body or utility but are designed to influence public knowledge and acceptance of IRP and DSM. Other activities involve interaction with a particular utility or regulatory body. The traditional forum for this interaction is an adversarial debate (i.e., litigation or regulatory intervention) over the merits of a utility`s plan or proposed action. However, an increasingly common forum is one in which non-utility groups and utilities cooperatively develop plans, policies, and/or programs. Arrangements of this type are referred to in this report as ``interactive efforts``. This report presents the findings derived from ten case studies of energy efficiency advocacy groups (EEAG) activities to influence the use of cost-effective DSM and to promote IRP; nine of these ten cases involve some form of interactive effort and all of them also include other EEAG activities. The goal of this research is not to measure the success of individual activities of the various groups, but to glean from a collective examination of their activities an understanding of the efficacy of various types of interactive efforts and other EEAG activities and of the contextual and procedural factors that influence their outcomes.

Schweitzer, M. [Oak Ridge National Lab., TN (United States); English, M.; Schexnayder, S.; Altman, J. [Univ. of Tennessee, Knoxville, TN (United States). Energy, Environment, and Resources Center

1994-03-01T23:59:59.000Z

46

A NOVEL APPROACH IN THE WEAKLY INTERACTING MASSIVE PARTICLE QUEST: CROSS-CORRELATION OF GAMMA-RAY ANISOTROPIES AND COSMIC SHEAR  

SciTech Connect (OSTI)

Both cosmic shear and cosmological gamma-ray emission stem from the presence of dark matter (DM) in the universe: DM structures are responsible for the bending of light in the weak-lensing regime and those same objects can emit gamma rays, either because they host astrophysical sources (active galactic nuclei or star-forming galaxies) or directly by DM annihilations (or decays, depending on the properties of the DM particle). Such gamma rays should therefore exhibit strong correlation with the cosmic shear signal. In this Letter, we compute the cross-correlation angular power spectrum of cosmic shear and gamma rays produced by the annihilation/decay of weakly interacting massive particle DM, as well as by astrophysical sources. We show that this observable provides novel information on the composition of the extragalactic gamma-ray background (EGB), since the amplitude and shape of the cross-correlation signal strongly depend on which class of sources is responsible for the gamma-ray emission. If the DM contribution to the EGB is significant (at least in a definite energy range), although compatible with current observational bounds, its strong correlation with the cosmic shear makes such signal potentially detectable by combining Fermi Large Area Telescope data with forthcoming galaxy surveys, like the Dark Energy Survey and Euclid. At the same time, the same signal would demonstrate that the weak-lensing observables are indeed due to particle DM matter and not to possible modifications of general relativity.

Camera, Stefano [CENTRA, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Lisboa (Portugal); Fornasa, Mattia [School of Physics and Astronomy, University of Nottingham, Nottingham (United Kingdom); Fornengo, Nicolao; Regis, Marco [Dipartimento di Fisica, Universita di Torino and INFN, Torino (Italy)

2013-07-01T23:59:59.000Z

47

Room temperature "super-cooling" of water by interaction with hydrophobic groups in a lipidic gel  

E-Print Network [OSTI]

water, reflecting greater occupancy of higher energy vibrational states. In pure water, hydrogen bonding state between 250K and 240K. (Tiny droplets of water have been shown to spontaneously freeze at aboutRoom temperature "super-cooling" of water by interaction with hydrophobic groups in a lipidic gel F

48

The Grillakis-Machedon-Margetis Second order corrections to mean field evolution for weakly interacting Bosons in the case of 3-body interactions  

E-Print Network [OSTI]

This note shows that, with a little modification, the results in arXiv:0904.0158 hold in the 3-body interactions case.

Xuwen Chen

2009-11-21T23:59:59.000Z

49

Precision measurements of the {sup 60}Co {beta}-asymmetry parameter in search for tensor currents in weak interactions  

SciTech Connect (OSTI)

The {beta}-asymmetry parameter A-tilde for the Gamow-Teller decay of {sup 60}Co was measured by polarizing the radioactive nuclei with the brute-force low-temperature nuclear-orientation method. The {sup 60}Co activity was cooled down to milliKelvin temperatures in a {sup 3}He-{sup 4}He dilution refrigerator in an external 13-T magnetic field. The {beta} particles were observed by a 500-{mu}m-thick Si PIN diode operating at a temperature of about 10 K in a magnetic field of 0.6 T. Extensive geant4 Monte Carlo simulations were performed to gain control over the systematic effects. Our result, A-tilde=-1.014(12){sub stat}(16){sub syst}, is in agreement with the standard-model value of -0.987(9), which includes recoil-order corrections that were addressed for the first time for this isotope. Further, it enables limits to be placed on possible tensor-type charged weak currents, as well as other physics beyond the standard model.

Wauters, F.; Kraev, I.; Beck, M.; Breitenfeldt, M.; De Leebeeck, V.; Golovko, V. V.; Kozlov, V. Yu.; Phalet, T.; Roccia, S.; Soti, G.; Tandecki, M.; Traykov, E.; Van Gorp, S.; Severijns, N. [K. U. Leuven, Instituut voor Kern-en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven (Belgium); Zakoucky, D. [Nuclear Physics Institute, ASCR, CZ-250 68 Rez (Czech Republic); Towner, I. S. [Cyclotron Institute, Texas A and M University, College Station, Texas 77845 (United States)

2010-11-15T23:59:59.000Z

50

Groups  

Open Energy Info (EERE)

groups/all/feed en Buildings groups/all/feed en Buildings http://en.openei.org/community/group/buildings Description: This group is dedicated to discussions about green buildings, energy use in buildings, occupant comfort in buildings, and building technologies. The OpenEI Buildings Community Group will be dedicated to discussions, blogs, and postings about new building technologies, green buildings, energy use in buildings, and occupant experience (comfort levels) in green buildings.group/buildings" target="_blank">read more architecture building reviews buildings technology comfort energy use facilities management green building LEED technologies usgbc

51

CP violation and strong pion-pion interactions in the weak B charged decays into three charged pions  

E-Print Network [OSTI]

An analysis of charged B decay data in a quasi two-body decay into a charged pion plus a S, P,or D state of two charged pions is performed in the QCD factorization framework. The short distance amplitudes are calculated including next-to-leading order corrections in the strong coupling constant for vertex and penguin contributions. The long distance amplitudes due to the two charged pion final state interactions are described by the pion non-strange scalar and vector form factors for the two-pion S- and P-wave states, respectively and by a relativistic Breit-Wigner formula for the D-wave state. We achieve a good fit of the data with only three parameters for the S wave, one for the P wave and one for the D wave. Our model gives a unified unitary description of the three scalar resonances, f_0(600), f_0(980) and f_0(1400) in terms of the pion scalar form factor. We predict for the B to f_2(1270) transition form factor a value of 0.098+-0.007 at a momentum transfer square equal to the pion-mass square.

B. Loiseau; J. -P. Dedonder; A. Furman; R. Kaminski; L. Lesniak

2012-02-08T23:59:59.000Z

52

Exchange interactions in III-V and group-IV diluted magnetic semiconductors  

Science Journals Connector (OSTI)

Effective pair exchange interactions between Mn atoms in III-V and group-IV diluted magnetic semiconductors are determined from a two-step first-principles procedure. In the first step, the self-consistent electronic structure of a system is calculated for a collinear spin structure at zero temperature with the substitutional disorder treated within the framework of the coherent-potential approximation. The effective exchange pair interactions are then obtained in a second step by mapping the total energies associated with rotations of magnetic moments onto an effective classical Heisenberg Hamiltonian using the magnetic force theorem and one-electron Green functions. The formalism is applied to Ga1-xMnxAs alloys with and without As antisites, and to Ge1-xMnx alloys recently studied experimentally. A detailed study of the behavior of pair exchange interactions as a function of the distance between magnetic atoms as well as a function of the concentrations of the magnetic atoms and compensating defects is presented. We have found that due to disorder and the half-metallic character of the system the pair exchange interactions are exponentially damped with increasing distance between the Mn atoms. The exchange interactions between Mn atoms are ferromagnetic for distances larger than the ones corresponding to the averaged nearest-neighbor Mn-Mn distance. The pair exchange interactions are also reduced with increasing concentrations of the Mn atoms and As antisites. As a simple application of the calculated exchange interactions we present mean-field estimates of Curie temperatures.

J. Kudrnovský; I. Turek; V. Drchal; F. Máca; P. Weinberger; P. Bruno

2004-03-17T23:59:59.000Z

53

Evidence for tidal interaction and merger as the origin of galaxy morphology evolution in compact groups  

E-Print Network [OSTI]

We present the results of a morphological study based on NIR images of 25 galaxies, with different levels of nuclear activity, in 8 Compact Groups of Galaxies (CGs). We perform independently two different analysis: a isophotal study and a study of morphological asymmetries. The results yielded by the two analysis are highly consistent. For the first time, it is possible to show that deviations from pure ellipses are produced by inhomogeneous stellar mass distributions related to galaxy interactions and mergers. We find evidence of mass asymmetries in 74% of the galaxies in our sample. In 59% of these cases, the asymmetries come in pairs, and are consistent with tidal effects produced by the proximity of companion galaxies. The symmetric galaxies are generally small in size or mass, inactive, and have an early-type morphology. In 20% of the galaxies we find evidence for cannibalism. In 36% of the early-type galaxies the color gradient is positive (blue nucleus) or flat. Summing up these results, as much as 52% of the galaxies in our sample could show evidence of an on going or past mergers. Our observations suggest that galaxies in CGs merge more frequently under ``dry'' conditions. The high frequency of interacting and merging galaxies observed in our study is consistent with the bias of our sample towards CGs of type B, which represents the most active phase in the evolution of the groups. In these groups we also find a strong correlation between asymmetries and nuclear activity in early-type galaxies. This correlation allows us to identify tidal interactions and mergers as the cause of galaxy morphology transformation in CGs.[abridge

R. Coziol; I. Plauchu-Frayn

2007-02-10T23:59:59.000Z

54

Strong Inference and Weak Interactions  

Science Journals Connector (OSTI)

...spin. Parity is not conse cause the mirror image of this does not occur in nature...by reflection from magnetized cobalt mirrors and the angular distri-bution of decay...1015 (1958). 25, C. S. Wu and A. Schwarzschild, Columbia University Rept. CU-173...

E. M. Hafner; Susan Presswood

1965-07-30T23:59:59.000Z

55

Conservation Laws in Weak Interactions  

DOE R&D Accomplishments [OSTI]

Notes are presented on four lectures given at Harvard University in March 1957 on elementary particle physics, the theta-tau problem, validity of parity conservation, tests for invariance under P, C, and T, and the two-component theory of the neutrino. (W.D.M.)

Lee, T. D.

1957-03-00T23:59:59.000Z

56

The Relative Effectiveness of Positive Interdependence and Group Processing on Student Achievement, Interaction, and Attitude in Online Cooperative Learning  

E-Print Network [OSTI]

The purpose of this study was to investigate the relative effectiveness of positive interdependence and group processing on student achievement, interaction, and attitude in online cooperative learning. All of the participants, 144 college students...

Nam, Chang Woo

2010-01-14T23:59:59.000Z

57

The Weak Aggregating Algorithm and Weak Mixability  

E-Print Network [OSTI]

of the Weak Aggregating Algorithm that covers unbounded games is also described. #12; CONTENTS 2 Contents 1The Weak Aggregating Algorithm and Weak Mixability Yuri Kalnishkan Michael V. Vyugin 1 fyura the Weak Aggregating Algorithm that allows us to obtain additive terms of the form C p n. A modification

Kalnishkan, Yuri

58

Collider Detector at Fermilab (CDF): Data from the QCD Group's Research into Properties of the Strong Interaction  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The QCD group studies the properties of the strong interaction. Their public web page makes data and numerous figures available from both CDF Runs I and II.

,

59

Close interaction between students and faculty and between students in working groups is a hallmark of the Marketing program  

E-Print Network [OSTI]

Marketing Close interaction between students and faculty and between students in working groups is a hallmark of the Marketing program at Stetson. Small classes and sophisticated team projects using business Program The Marketing Career Development Experience is a unique course offering for our Marketing majors

Miles, Will

60

CP Violation, Neutral Currents, and Weak Equivalence  

DOE R&D Accomplishments [OSTI]

Within the past few months two excellent summaries of the state of our knowledge of the weak interactions have been presented. Correspondingly, we will not attempt a comprehensive review but instead concentrate this discussion on the status of CP violation, the question of the neutral currents, and the weak equivalence principle.

Fitch, V. L.

1972-03-23T23:59:59.000Z

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


61

Weak Parity Scott Aaronson  

E-Print Network [OSTI]

Weak Parity Scott Aaronson Andris Ambainis Kaspars Balodis Mohammad Bavarian§ Abstract We study elementary remarks about WEAK PARITY. (i) Of course it's trivial to guess PAR(X) on a 1/2 fraction of inputs

Aaronson, Scott

62

Tidal Interaction as the origin of early-type dwarf galaxies in group environment  

E-Print Network [OSTI]

We present a sample of dwarf galaxies that suffer ongoing disruption by the tidal force of nearby massive galaxies. Analysing structural and stellar population properties using the archival imaging and spectroscopic data from the Sloan Digital Sky Survey (SDSS), we find that they are likely a `smoking gun' example of the formation of early-type dwarf galaxies (dEs) in the galaxy group environment through the tidal stirring. Inner cores of these galaxies are fairly intact and the observed light profiles are well fitted with the Sersic functions, while the tidally stretched stellar halos are prominent in the outer parts. They are all located within the 50 kpc sky-projected distance from the center of host galaxies and no dwarf galaxies have relative line-of-sight velocity larger than 205 km/s to their hosts. We derive the Composite Stellar Population (CSP) properties these galaxies by fitting the SDSS optical spectra to a multiple-burst composite stellar population model. We find that these galaxies accumulate ...

Paudel, Sanjaya

2014-01-01T23:59:59.000Z

63

Generation of quasi-monochromatic beams of accelerated electrons during interaction of weak-contrast intense femtosecond laser radiation with a metal-foil edge  

SciTech Connect (OSTI)

The formation of monoenergetic beams of accelerated electrons by focusing femtosecond laser radiation with an intensity of 2 Multiplication-Sign 10{sup 17} W cm{sup -2} onto an edge of aluminium foil has been experimentally demonstrated. The electrons had energy distributions peaking in the range from 0.2 to 0.8 MeV and an energy spread less than 20 %. The acceleration mechanism related to the generation of a plasma wave as a result of self-modulation instability of the laser pulse in the subcritical plasma formed the prepulse of the laser system (arriving 10 ns before the main pulse) is considered. Onedimensional PIC simulation of the interaction between the laser radiation and plasma with a concentration of 5 Multiplication-Sign 10{sup 19} cm{sup -3} showed that effective excitation of a plasma wave, as well as the trapping and acceleration of the electron beam with an energy on the order of 1 MeV, may occur in the presence of inhomogeneities in the density at the plasma boundary and in the temporal shape of the beam. (extreme light fields and their applications)

Malkov, Yu A; Stepanov, A N; Yashunin, D A; Pugachev, L P; Levashov, P R; Andreev, N E; Andreev, Aleksandr A

2013-03-31T23:59:59.000Z

64

Electromagnetic weak turbulence theory revisited  

SciTech Connect (OSTI)

The statistical mechanical reformulation of weak turbulence theory for unmagnetized plasmas including fully electromagnetic effects was carried out by Yoon [Phys. Plasmas 13, 022302 (2006)]. However, the wave kinetic equation for the transverse wave ignores the nonlinear three-wave interaction that involves two transverse waves and a Langmuir wave, the incoherent analogue of the so-called Raman scattering process, which may account for the third and higher-harmonic plasma emissions. The present paper extends the previous formalism by including such a term.

Yoon, P. H. [IPST, University of Maryland, College Park, Maryland 20742 (United States); Ziebell, L. F. [Instituto de Fisica, UFRGS, Porto Alegre, RS (Brazil); Gaelzer, R.; Pavan, J. [Instituto de Fisica e Matematica, UFPel, Pelotas, RS (Brazil)

2012-10-15T23:59:59.000Z

65

The medium matters: Mining the long-promised merit of group interaction in creative idea generation tasks in a meta-analysis of the electronic group brainstorming literature  

Science Journals Connector (OSTI)

This meta-analysis examines the influence of electronic communication media on group idea generation tasks. Data from the following three areas of the brainstorming literature are synthesized to assess differences across performance variables and group ... Keywords: Electronic brainstorming, Idea generation, Meta-analysis

Darleen M. DeRosa; Carter L. Smith; Donald A. Hantula

2007-05-01T23:59:59.000Z

66

Comparison of weak interaction theory with experiment  

SciTech Connect (OSTI)

The review discusses the status of charged currents, neutral current reactions, Glashow-Iliopoulos-Maiani model, extension to 6 quarks, and CP violation. 115 references. (GHT)

Wojcicki, S.G.

1981-10-01T23:59:59.000Z

67

Weak-link capacitor  

DOE Patents [OSTI]

A process for making a dielectric material where a precursor polymer selected from poly(phenylene vinylene) polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and poly(p-pyridine vinylene) is energized said by exposure by radiation or increase in temperature to a level sufficient to eliminate said leaving groups contained within the precursor polymer, thereby transforming the dielectric material into a conductive polymer. The leaving group in the precursor polymer can be a chloride, a bromide, an iodide, a fluoride, an ester, an xanthate, a nitrile, an amine, a nitro group, a carbonate, a dithiocarbamate, a sulfonium group, an oxonium group, an iodonium group, a pyridinium group, an ammonium group, a borate group, a borane group, a sulphinyl group, or a sulfonyl group.

Dirk, Shawn M. (Albuquerque, NM); Johnson, Ross S. (Albuquerque, NM); Wheeler, David R. (Albuquerque, NM); Bogart, Gregory R. (Corrales, NM)

2011-06-07T23:59:59.000Z

68

Weak-link capacitor  

DOE Patents [OSTI]

A process for making a dielectric material where a precursor polymer selected from poly(phenylene vinylene)polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and poly(p-pyridine vinylene) is energized said by exposure by radiation or increase in temperature to a level sufficient to eliminate said leaving groups contained within the precursor polymer, thereby transforming the dielectric material into a conductive polymer. The leaving group in the precursor polymer can be a chloride, a bromide, an iodide, a fluoride, an ester, an xanthate, a nitrile, an amine, a nitro group, a carbonate, a dithiocarbamate, a sulfonium group, an oxonium group, an iodonium group, a pyridinium group, an ammonium group, a borate group, a borane group, a sulphinyl group, or a sulfonyl group.

Dirk, Shawn M.; Johnson, Ross S.; Wheeler, David R.; Bogart, Gregory R.

2013-04-23T23:59:59.000Z

69

NIF User Group  

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

users NIF User Group The National Ignition Facility User Group provides an organized framework and independent vehicle for interaction between the scientists who use NIF for...

70

Cosmology with weak lensing surveys  

Science Journals Connector (OSTI)

...and future weak lensing surveys such as the Joint Dark Energy Mission (JDEM; e.g...Large-aperture Synoptic Survey Telescope will play a major...and future weak lensing surveys such as the Joint Dark Energy Mission (JDEM; e.g...

2005-01-01T23:59:59.000Z

71

Observing trajectories with weak measurements in quantum systems in the semiclassical regime  

E-Print Network [OSTI]

We propose a scheme allowing to observe the evolution of a quantum system in the semiclassical regime along the paths generated by the propagator. The scheme relies on performing consecutive weak measurements of the position. We show how weak trajectories" can be extracted from the pointers of a series of measurement devices having weakly interacted with the system. The properties of these "weak trajectories" are investigated and illustrated in the case of a time-dependent model system.

A. Matzkin

2012-09-11T23:59:59.000Z

72

A Second Poincare' Group  

E-Print Network [OSTI]

Solutions of the sourceless Einstein's equation with weak and strong cosmological constants are discussed by using In\\"on\\"u-Wigner contractions of the de Sitter groups and spaces. The more usual case corresponds to a weak cosmological-constant limit, in which the de Sitter groups are contracted to the Poincar\\'e group, and the de Sitter spaces are reduced to the Minkowski space. In the strong cosmological-constant limit, however, the de Sitter groups are contracted to another group which has the same abstract Lie algebra of the Poincar\\'e group, and the de Sitter spaces are reduced to a 4-dimensional cone-space of infinite scalar curvature, but vanishing Riemann and Ricci curvature tensors. In such space, the special conformal transformations act transitively, and the equivalence between inertial frames is that of special relativity.

R. Aldrovandi; J. G. Pereira

1998-09-21T23:59:59.000Z

73

ON PROPERTIES OF (WEAKLY) SMALL GROUPS CEDRIC MILLIET  

E-Print Network [OSTI]

or not. 2000 Mathematics Subject Classification. 03C45, 03C60, 20E45, 20E99, 20F18, 20F24. Key words

Paris-Sud XI, Université de

74

Heating Cooling Flows with Weak Shock Waves  

E-Print Network [OSTI]

The discovery of extended, approximately spherical weak shock waves in the hot intercluster gas in Perseus and Virgo has precipitated the notion that these waves may be the primary heating process that explains why so little gas cools to low temperatures. This type of heating has received additional support from recent gasdynamical models. We show here that outward propagating, dissipating waves deposit most of their energy near the center of the cluster atmosphere. Consequently, if the gas is heated by (intermittent) weak shocks for several Gyrs, the gas within 30-50 kpc is heated to temperatures that far exceed observed values. This heating can be avoided if dissipating shocks are sufficiently infrequent or weak so as not to be the primary source of global heating. Local PV and viscous heating associated with newly formed X-ray cavities are likely to be small, which is consistent with the low gas temperatures generally observed near the centers of groups and clusters where the cavities are located.

W. G. Mathews; A. Faltenbacher; F. Brighenti

2005-11-05T23:59:59.000Z

75

Hadronic Total Cross Sections (R) in E+E- Interactions: Data from DOE laboratory experiments as compiled in data reviews by the Durham High Energy Physics Database Group  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

A comprehensive compilation of experimental data on total hadronic cross sections, and R ratios, in e+e- interactions is presented. Published data from the Novosibirsk, Orsay, Frascati, SLAC, CORNELL, DESY, KEK and CERN e+e- colliders on both exclusive and inclusive final particle states are included from threshold energies to the highest LEP energies. The data are presented in tabular form supplemented by compilation plots of different exclusive final particle states and of different energy regions. (Taken from abstract of paper, A Compilation of Data on Hadronic Total Cross Sections in E+E- Interactions, M.R. Whalley, Journal of Physics G (Nuclear and Particle Physics), Volume 29, Number 12A, 2003). The Durham High Energy Physics (HEP) Database Group makes these data, extracted from papers and data reviews, available in one place in an easy-to-access format. The data are also included in the Durham HEP Reaction Data Database, which can be searched at http://hepdata.cedar.ac.uk/reaction

Whalley, M.R.

76

Cosmology with the cluster mass function: mass estimators and shape systematics in large weak lensing surveys  

Science Journals Connector (OSTI)

......density, and the nature and evolution of dark energy. Large weak lensing surveys of 20 000 galaxy clusters and groups will...Joint Dark Energy Mission, Large Synoptic Survey Teloscope and Dark Energy Survey unhindered by galaxy cluster and group......

Virginia L. Corless; Lindsay J. King

2009-06-11T23:59:59.000Z

77

Weak-value amplification as an optimal metrological protocol  

E-Print Network [OSTI]

The implementation of weak-value amplification requires the pre- and post-selection of states of a quantum system, followed by the observation of the response of the meter, which interacts weakly with the system. Data acquisition from the meter is conditioned to successful post-selection events. Here we derive an optimal post-selection procedure for estimating the coupling constant between system and meter, and show that it leads both to weak-value amplification and to the saturation of the quantum Fisher information, under conditions fulfilled by all previously reported experiments on the amplification of weak signals. For most of the pre-selected states, full information on the coupling constant can be extracted from the meter data set alone, while for a small fraction of the space of pre-selected states, it must be obtained from the post-selection statistics.

G. Bié Alves; B. M. Escher; R. L. de Matos Filho; N. Zagury; L. Davidovich

2014-10-27T23:59:59.000Z

78

Strong Effect of Weak Charging in Suspensions of Anisotropic Colloids  

E-Print Network [OSTI]

Suspensions of hard colloidal particles frequently serve as model systems in studies on fundamental aspects of phase transitions. But often colloidal particles that are considered as ``hard'' are in fact weakly charged. If the colloids are spherical, weak charging has a only a weak effect on the structural properties of the suspension, which can be easily corrected for. However, this does not hold for anisotropic particles. We introduce a model for the interaction potential between charged ellipsoids of revolution (spheroids) based on the Derjaguin approximation of Debye--H\\"uckel Theory and present a computer simulation study on aspects of the system's structural properties and phase behaviour. In line with previous experimental observations, we find that even a weak surface charge has a strong impact on the correlation functions. A likewise strong impact is seen on the phase behaviour, in particular, we find stable cubatic order in suspensions of oblate ellipsoids.

Sven Dorosz; Nikhilesh Shegokar; Tanja Schilling; Martin Oettel

2014-03-21T23:59:59.000Z

79

Probing the Proton's Weak Side | Jefferson Lab  

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

proton. The weak force is one of four fundamental forces, which include electromagnetism, gravity and the strong force. The weak force acts on subatomic particles, such...

80

Weak detonations, their paths and  

Science Journals Connector (OSTI)

Previously, a quasi-steady form of the classical Rankine-Hugoniot weak detonation has been shown to play an integral part in describing certain forms of detonation initiation, arising during an intermediate stage between the thermal ignition of the material and the first appearance of a strong detonation with Zeldovich-von Neumann-Döring (ZND) structure. In this paper, we use a parametric variable integration to calculate numerically the path of the weak detonation in two important initiation scenarios, shock-induced and initial disturbance-induced transition to detonation, via a large activation energy induction domain model. The influence that the nature of the path may have on the weak detonation structure is also discussed. In each case these calculations enable us to predict how, where and when the transition to a strong detonation with ZND structure will occur. Explanations for several phenomena observed in both experiments and numerical studies on transition to detonation are also uncovered by these calculations.

Mark Short; J W Dold

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

Weak Localization in Bilayer Graphene  

Science Journals Connector (OSTI)

We have performed the first experimental investigation of quantum interference corrections to the conductivity of a bilayer graphene structure. A negative magnetoresistance—a signature of weak localization—is observed at different carrier densities, including the electroneutrality region. It is very different, however, from the weak localization in conventional two-dimensional systems. We show that it is controlled not only by the dephasing time, but also by different elastic processes that break the effective time-reversal symmetry and provide intervalley scattering.

R. V. Gorbachev; F. V. Tikhonenko; A. S. Mayorov; D. W. Horsell; A. K. Savchenko

2007-04-26T23:59:59.000Z

82

INTRODUCTION Weakly electric fish generate an electric organ discharge (EOD)  

E-Print Network [OSTI]

4196 INTRODUCTION Weakly electric fish generate an electric organ discharge (EOD) that results in an electric field that surrounds the fish's body. In Eigenmannia, the EOD is quasi-sinusoidal and when fish are in close proximity (~1m or less) their EODs interact. In the case of two nearby conspecifics, the combined

83

Sources of Weakness in Glass  

Science Journals Connector (OSTI)

...October 1964 research-article Sources of Weakness in Glass C. Gurney The theoretical strength of glass is of the order of 2 to 5 MLb./in.$^2$ At room temperature, common glasses with undamaged surfaces give breaking stresses of about...

1964-01-01T23:59:59.000Z

84

Weak lensing and dark energy  

Science Journals Connector (OSTI)

We study the power of upcoming weak lensing surveys to probe dark energy. Dark energy modifies the distance-redshift relation as well as the matter power spectrum, both of which affect the weak lensing convergence power spectrum. Some dark-energy models predict additional clustering on very large scales, but this probably cannot be detected by weak lensing alone due to cosmic variance. With reasonable prior information on other cosmological parameters, we find that a survey covering 1000 sq deg down to a limiting magnitude of R=27 can impose constraints comparable to those expected from upcoming type Ia supernova and number-count surveys. This result, however, is contingent on the control of both observational and theoretical systematics. Concentrating on the latter, we find that the nonlinear power spectrum of matter perturbations and the redshift distribution of source galaxies both need to be determined accurately in order for weak lensing to achieve its full potential. Finally, we discuss the sensitivity of the three-point statistics to dark energy.

Dragan Huterer

2002-02-12T23:59:59.000Z

85

Inclusive Particle Production Data in E+E- Interactions: Data from DOE laboratory experiments as compiled in data reviews by the Durham High Energy Physics Database Group  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

A comprehensive compilation of experimental data on inclusive particle production in e+e- interactions is presented. Data are given in both tabular and graphical form for multiplicities and inclusive differential cross sections from experiments at all of the world`s high energy e+e- colliders. To facilitate comparison between the data sets, curves are also shown from the JETSET 7.4 Monte Carlo program. (Taken from the abstract of A Compilation of Inclusive Particle Production Data in E+E- Annihilation, G.D. Lafferty, P.I. Reeves, and M.R. Whalley, Journal of Physics G (Nuclear and Particle Physics), Volume 21, Number 12A, 1995.) The Durham High Energy Physics (HEP) Database Group makes these data, extracted from papers and data reviews, available in one place in an easy-to-access format. These data are also included in the Durham HEP Reaction Data Database which can be searched at http://hepdata.cedar.ac.uk/reaction

Lafferty, G.D.; Reeves, P.I.; Whalley, M.R.

86

27 contribution to weak electromagnetic decays  

Science Journals Connector (OSTI)

We notice that the assumption of octet dominance of the Cabibbo weak Hamiltonian is not required to explain the weak electromagnetic decays. In order to explain large asymmetry parameter ?(?+?p?) we consider ?7 contribution to the parity-violating Hamiltonian.

Ramesh C. Verma and M. P. Khanna

1978-12-01T23:59:59.000Z

87

Electronic publishing: strengths, weaknesses and threats  

Science Journals Connector (OSTI)

...April 1998 news News Electronic publishing: strengths, weaknesses and threats Derek McNally Treasurer of the RAS 2.7 April 1998 Vol 39 NEWS Both Monthly...Treasurer of the RAS. Electronic publishing: strengths, weaknesses and threats...

Derek McNally

1998-04-01T23:59:59.000Z

88

Theory and Modeling of Weakly Bound/Physisorbed Materials for Hydrogen Storage  

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

and Modeling of and Modeling of Weakly Bound/Physisorbed Materials for Hydrogen Storage Andrew Williamson Quantum Simulations Group Lawrence Livermore National Laboratory Tadashi Ogitsu Lawrence Livermore National Laboratory Yong-Hyun Kim, Mike Heben, and Shengbai Zhang National Renewable Energy Laboratory UCRL-209054 This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48. Outline * Storage by physisorption: - CNT, fullerenes, carbon aerogels - Doping, Decorating, Charging * Accuracy of Methods: DFT, QMC and Quantum Chemistry - Van der Waals interactions - * Use of DFT to screen for new compounds - 2 binding to doped fullerenes * LDA, GGA and ad-hoc corrections to pseudopotentials

89

PREDICTING THE FRACTURE CHARACTER OF POTENTIAL WEAK LAYERS IN PENETROMETER James Floyer1,  

E-Print Network [OSTI]

PREDICTING THE FRACTURE CHARACTER OF POTENTIAL WEAK LAYERS IN PENETROMETER SIGNALS James Floyer1 has proved to be challenging. A scheme for predicting the fracture character of potential weak layers fracture character groups is performed, potential failure layers are correctly classified 80% of the time

Jamieson, Bruce

90

Physics Division, LANL: Neutron Science and Technology Group  

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

including supernova remnants, pulsar wind nebulae, active galactic nuclei, and gamma-ray bursts. The Weak Interactions team develops experiments to answer questions about the...

91

Metrization in weakly sequential spaces  

E-Print Network [OSTI]

is a weakly sequential, T -space with an HCS-CP collection QU of open sets, then QV has finite order at every non-isolated point p in X. Proof: Let QU = (U : a c A) and let p be a non-isolated point in X. Let QU (p) (U c &U : p c U ). Suppose that a... neigh- borhood base QV = (V. : i t N) at p. Since QB (n) has finite order i at p, for each i c N, let pi E(ViA B. ) ? (p. : j & i) where Bi c i B (n), p is not an element of B. and B g B. , for j & i. Then 0 i i j' (p ) converges to p. Since each p...

Emerson, Dominique Margaret

2012-06-07T23:59:59.000Z

92

Energy deposition by weakly interacting massive particles: a comprehensive study  

Science Journals Connector (OSTI)

......necessary to study the energy deposition in the surrounding...pair annihilates into muons; and (iii) a 200-GeV...cascade. The fractional energy depositions into the...pair annihilates into muons and gives as a result a hard energy spectrum in agreement......

C. Evoli; M. Valdés; A. Ferrara; N. Yoshida

2012-05-01T23:59:59.000Z

93

CP-Violation in the Renormalizable Theory of Weak Interaction  

Science Journals Connector (OSTI)

......3 (1977) pp. 1108-1110 Spontaneous CP Violation in the Vectorlike Model of the...pp. 978-990 Lepton-Quark Symmetry, CP-Violation and the Decay microe gamma Kazuo...224-228 Toward a Unified Description of CP Violation Kazuo Koike Progress of Theoretical......

Makoto Kobayashi; Toshihide Maskawa

1973-02-01T23:59:59.000Z

94

Chen Ning Yang, Weak Interactions, and Parity Violation  

Office of Scientific and Technical Information (OSTI)

Dao Lee "for their penetrating investigation of the so-called parity laws which has led to important discoveries regarding the elementary particles". "Yang and Lee made a...

95

Weakly interacting sub-eV particle searches  

SciTech Connect (OSTI)

We make use of the generation-regeneration or "light shining through a wall" technique in searches for optical-wavelength photons mixing with hypothetical hidden-sector paraphotons in the mass range between 10^-5 and 10^-2 electron volts for a mixing parameter greater than 10^-7 and in sensitive searches for scalar and pseudoscalar coupling of photons to light neutral bosons in the mass range of approximately 1.0 milli-electron volts and coupling strength greater than 10^-6 GeV-1. Additionally, there is an effort underway to use photons in the microwave region using this same technique to make a more sensitive measurement in the mass range of approximately 0.1 milli-electron volts. The equipment in the latter effort will be used to search for galactic halo axions in this same mass range.

Afanasev, A; Beard, K B; Biallas, G; Boyce, J; Hirshfield, J L; Jiang, Y; Kazakevitch, G; LaPointe, M A; Martin, A; Minarni, M; Ramdon, R; Shinn, Michelle D; Slocum, P

2010-08-01T23:59:59.000Z

96

Weak interactions, omnivory and emergent food-web properties  

Science Journals Connector (OSTI)

...permanence using linear programming (Jansen 1987). To check whether a food web is...Pimm 1982; Kokkoris et al. 2002; Jansen & Kokkoris 2003). This definition is...Pimm 1982; Kokkoris et al. 2002; Jansen & Kokkoris 2003), although Pimm (1982...

2004-01-01T23:59:59.000Z

97

Weak solutions for a fluid-elastic structure interaction model  

E-Print Network [OSTI]

on @(S(0),4) where nL denotes the outward normal to @ S(0), {,_i}i2INis an orthonormal basis of L2( S(0)) and {~i}i2INis a non negative non decreasing sequence of eigenvalues. The regularity

Esteban, Maria J.

98

Single molecule study of weak and transient biological interactions.  

E-Print Network [OSTI]

??Over the past decade, major breakthroughs were led in molecular biology with techniques allowing the study of dynamics at the resolution of an individual molecule.… (more)

Cisse, Ibrahim

2010-01-01T23:59:59.000Z

99

Weak Boson Emission in Hadron Collider Processes  

E-Print Network [OSTI]

The O(alpha) virtual weak radiative corrections to many hadron collider processes are known to become large and negative at high energies, due to the appearance of Sudakov-like logarithms. At the same order in perturbation theory, weak boson emission diagrams contribute. Since the W and Z bosons are massive, the O(alpha) virtual weak radiative corrections and the contributions from weak boson emission are separately finite. Thus, unlike in QED or QCD calculations, there is no technical reason for including gauge boson emission diagrams in calculations of electroweak radiative corrections. In most calculations of the O(alpha) electroweak radiative corrections, weak boson emission diagrams are therefore not taken into account. Another reason for not including these diagrams is that they lead to final states which differ from that of the original process. However, in experiment, one usually considers partially inclusive final states. Weak boson emission diagrams thus should be included in calculations of electroweak radiative corrections. In this paper, I examine the role of weak boson emission in those processes at the Fermilab Tevatron and the CERN LHC for which the one-loop electroweak radiative corrections are known to become large at high energies (inclusive jet, isolated photon, Z+1 jet, Drell-Yan, di-boson, t-bar t, and single top production). In general, I find that the cross section for weak boson emission is substantial at high energies and that weak boson emission and the O(alpha) virtual weak radiative corrections partially cancel.

U. Baur

2006-11-17T23:59:59.000Z

100

Beam-Bem interactions  

SciTech Connect (OSTI)

In high energy storage-ring colliders, the nonlinear effect arising from beam-beam interactions is a major source that leads to the emittance growth, the reduction of beam life time, and limits the collider luminosity. In this paper, two models of beam-beam interactions are introduced, which are weak-strong and strong-strong beam-beam interactions. In addition, space-charge model is introduced.

Kim, Hyung Jin; /Fermilab

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

Weak measurement and control of entanglement generation  

E-Print Network [OSTI]

In this paper we show how weak joint measurement and local feedback can be used to control entanglement generation between two qubits. To do this, we make use of a decoherence free subspace (DFS). Weak measurement and feedback can be used to drive the system into this subspace rapidly. Once within the subspace, feedback can generate entanglement rapidly, or turn off entanglement generation dynamically. We also consider, in the context of weak measurement, some of differences between purification and generating entanglement.

Charles D. Hill; J. F. Ralph

2008-01-28T23:59:59.000Z

102

Weak measurements with a qubit meter  

E-Print Network [OSTI]

We derive schemes to measure the so-called weak values of quantum system observables by coupling of the system to a qubit meter system. We highlight, in particular, the meaning of the imaginary part of the weak values, and show how it can be measured directly on equal footing with the real part of the weak value. We present compact expressions for the weak value of single qubit observables and of product observables on qubit pairs. Experimental studies of the results are suggested with cold trapped ions.

Shengjun Wu; Klaus Mølmer

2009-11-13T23:59:59.000Z

103

Renormalization group aspects of graphene  

Science Journals Connector (OSTI)

...Tsai Renormalization group aspects of graphene Maria A. H. Vozmediano * * vozmediano...Cantoblanco, , 28049 Madrid, Spain Graphene is a two-dimensional crystal of carbon...same lines. renormalization group|graphene|Coulomb interactions| 1. Introduction...

2011-01-01T23:59:59.000Z

104

WEAK MEASUREMENT IN QUANTUM MECHANICS ABRAHAM NEBEN  

E-Print Network [OSTI]

WEAK MEASUREMENT IN QUANTUM MECHANICS ABRAHAM NEBEN PHYS 342 Final Project March 10, 2011 Contents of Postselection 4 4. Impossible Spin Measurements 5 5. Hardy's Paradox 5 6. Controversy over Weak Measurement 8 7 of a Measurement of a Component of the Spin of a Spin-1/2 Particle Can Turn Out to be 100." [1] The topic

Rosner, Jonathan L.

105

SEEING AND COMMUNICATING THROUGH WEAK ELECTRIC  

E-Print Network [OSTI]

Inside JEB i SEEING AND COMMUNICATING THROUGH WEAK ELECTRIC FIELDS Weakly electric fish spend their lives bathed in their own internally generated mild electric field, interpreting perturbations frequency electric `chirps'. Rüdiger Krahe, from McGill University, Canada, says, `These fish are very

106

Oph and the weak-wind problem  

Science Journals Connector (OSTI)

......but also in velocity space (Sundqvist...because of the wind clumpiness...line ratio maps of Sh 2-27...a clump of mass M cl located...candidate weak-wind stars (Martins...its space velocity of 30 km s1...the weak-wind problem...understanding the mass-loss mechanism...transverse velocity imply that......

V. V. Gvaramadze; N. Langer; J. Mackey

2012-11-01T23:59:59.000Z

107

Physical origins of weak H{sub 2} binding on carbon nanostructures: Insight from ab initio studies of chemically functionalized graphene nanoribbons  

SciTech Connect (OSTI)

We have performed ab initio density functional theory calculations, incorporating London dispersion corrections, to study the absorption of molecular hydrogen on zigzag graphene nanoribbons whose edges have been functionalized by OH, NH{sub 2}, COOH, NO{sub 2}, or H{sub 2}PO{sub 3}. We find that hydrogen molecules always preferentially bind at or near the functionalized edge, and display induced dipole moments. Binding is generally enhanced by the presence of polar functional groups. The largest gains are observed for groups with oxygen lone pairs that can facilitate local charge reorganization, with the biggest single enhancement in adsorption energy found for “strong functionalization” by H{sub 2}PO{sub 3} (115 meV/H{sub 2} versus 52 meV/H{sub 2} on bare graphene). We show that for binding on the “outer edge” near the functional group, the presence of the group can introduce appreciable contributions from Debye interactions and higher-order multipole electrostatic terms, in addition to the dominant London dispersion interactions. For those functional groups that contain the OH moiety, the adsorption energy is linearly proportional to the number of lone pairs on oxygen atoms. Mixed functionalization with two different functional groups on a graphene edge can also have a synergistic effect, particularly when electron-donating and electron-withdrawing groups are combined. For binding on the “inner edge” somewhat farther from the functional group, most of the binding again arises from London interactions; however, there is also significant charge redistribution in the ? manifold, which directly reflects the electron donating or withdrawing capacity of the functional group. Our results offer insight into the specific origins of weak binding of gas molecules on graphene, and suggest that edge functionalization could perhaps be used in combination with other strategies to increase the uptake of hydrogen in graphene. They also have relevance for the storage of hydrogen in porous carbon materials, such as activated carbons.

Ulman, Kanchan; Bhaumik, Debarati [Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India)] [Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India); Wood, Brandon C. [Quantum Simulations Group, Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, California 94550 (United States)] [Quantum Simulations Group, Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, California 94550 (United States); Narasimhan, Shobhana [Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India) [Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India); Sheikh Saqr Laboratory, ICMS, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064 (India)

2014-05-07T23:59:59.000Z

108

Magnetism Group  

Science Journals Connector (OSTI)

... of the Institute of Physics and the Physical Society has announced the establishment of a Magnetism Group. The aim of the new Group is to further interest in ... Group. The aim of the new Group is to further interest in magnetism by holding regular discussion meetings and in other ways. It is intended that these ...

1965-09-04T23:59:59.000Z

109

Quantum correlation cost of the weak measurement  

E-Print Network [OSTI]

Quantum correlation cost (QCC) characterizing how much quantum correlation is used in a weak-measurement process is presented based on the trace norm. It is shown that the QCC is related to the trace-norm-based quantum discord (TQD) by only a factor that is determined by the strength of the weak measurement, so it only catches partial quantumness of a quantum system compared with the TQD. We also find that the residual quantumness can be `extracted' not only by the further von Neumann measurement, but also by a sequence of infinitesimal weak measurements. As an example, we demonstrate our outcomes by the Bell-diagonal state.

Jun Zhang; Shao-xiong Wu; Chang-shui Yu

2014-09-14T23:59:59.000Z

110

New weakly coupled forces hidden in low-energy QCD  

Science Journals Connector (OSTI)

Is it possible to detect a new weakly coupled force at the QCD scale that interacts primarily with quarks? This work investigates experimental signatures of a new MeV–GeV gauge boson that couples to the baryon number, with attention to the 100 MeV–GeV mass range that is the regime of nonperturbative QCD. Such a state can be searched for in rare radiative decays of light mesons (?,??,?,?) as a ?0? resonance, which is its leading decay mode from 140 to 620 MeV. This is a new discovery window for forces beyond the Standard Model that is not covered by existing dark photon searches.

Sean Tulin

2014-06-05T23:59:59.000Z

111

Group X  

SciTech Connect (OSTI)

This project is currently under contract for research through the Department of Homeland Security until 2011. The group I was responsible for studying has to remain confidential so as not to affect the current project. All dates, reference links and authors, and other distinguishing characteristics of the original group have been removed from this report. All references to the name of this group or the individual splinter groups has been changed to 'Group X'. I have been collecting texts from a variety of sources intended for the use of recruiting and radicalizing members for Group X splinter groups for the purpose of researching the motivation and intent of leaders of those groups and their influence over the likelihood of group radicalization. This work included visiting many Group X websites to find information on splinter group leaders and finding their statements to new and old members. This proved difficult because the splinter groups of Group X are united in beliefs, but differ in public opinion. They are eager to tear each other down, prove their superiority, and yet remain anonymous. After a few weeks of intense searching, a list of eight recruiting texts and eight radicalizing texts from a variety of Group X leaders were compiled.

Fields, Susannah

2007-08-16T23:59:59.000Z

112

Weak Lensing Simulations for the SKA  

E-Print Network [OSTI]

Weak gravitational lensing measurements are traditionally made at optical wavelengths where many highly resolved galaxy images are readily available. However, the Square Kilometre Array (SKA) holds great promise for this type of measurement at radio wavelengths owing to its greatly increased sensitivity and resolution over typical radio surveys. The key to successful weak lensing experiments is in measuring the shapes of detected sources to high accuracy. In this document we describe a simulation pipeline designed to simulate radio images of the quality required for weak lensing, and will be typical of SKA observations. We provide as input, images with realistic galaxy shapes which are then simulated to produce images as they would have been observed with a given radio interferometer. We exploit this pipeline to investigate various stages of a weak lensing experiment in order to better understand the effects that may impact shape measurement. We first show how the proposed SKA1-Mid array configurations perfor...

Patel, Prina; Makhathini, Sphesihle; Abdalla, Filipe; Bacon, David; Brown, Michael L; Heywood, Ian; Jarvis, Matt; Smirnov, Oleg

2015-01-01T23:59:59.000Z

113

Superluminal neutrino: a quantum weak measurement effect?  

E-Print Network [OSTI]

Superluminal neutrino: a quantum weak measurement effect? Pragya Shukla · Dynamical laws, both in quantum and classical theory, are ?me-symmetric. · Measurements, the result of a measurement performed at a later ?me t1 or previous ?me

114

Weak Charge of 133 Walter Johnson  

E-Print Network [OSTI]

Atomic PNC and the Weak Charge of 133 Cs Walter Johnson Department of Physics Notre Dame University http://www.nd.edu/johnson June 21, 2002 Abstract Atomic PNC measurements and calculations are reviewed

Johnson, Walter R.

115

Weak and Strong Theories of Truth  

Science Journals Connector (OSTI)

A subtheory of the theory of self-referential truth known as FS is shown to be weak as a theory of truth but equivalent to full FS in its...

Michael Sheard

2001-06-01T23:59:59.000Z

116

Amplification of Angular Rotations Using Weak Measurements  

E-Print Network [OSTI]

We present a weak measurement protocol that permits a sensitive estimation of angular rotations based on the concept of weak-value amplification. The shift in the state of a pointer, in both angular position and the conjugate orbital angular momentum bases, is used to estimate angular rotations. This is done by an amplification of both the real and imaginary parts of the weak-value of a polarization operator that has been coupled to the pointer, which is a spatial mode, via a spin-orbit coupling. Our experiment demonstrates the first realization of weak-value amplification in the azimuthal degree of freedom. We have achieved effective amplification factors as large as 100, providing a sensitivity that is on par with more complicated methods that employ quantum states of light or extremely large values of orbital angular momentum.

Omar S. Magana-Loaiza; Mohammad Mirhosseini; Brandon Rodenburg; Robert W. Boyd

2013-12-10T23:59:59.000Z

117

Quantized topological terms in weakly coupled gauge theories and their connection to symmetry protected topological phases  

E-Print Network [OSTI]

We consider a weakly coupled gauge theory where charged particles all have large gaps (ie no Higgs condensation to break the gauge "symmetry") and the field strength fluctuates only weakly. We ask what kind of topological terms can be added to the Lagrangian of such a weakly coupled gauge theory. In this paper, we systematically construct quantized topological terms which are generalization of the Chern-Simons terms and $F\\wedge F$ terms, in space-time dimensions $d$ and for any gauge groups (continuous or discrete), using each element of the topological cohomology classes $H^{d+1}(BG,\\Z)$ on the classifying space $BG$ of the gauge group $G$. In 3$d$ or for finite gauge groups above 3$d$, the weakly coupled gauge theories are gapped. So our results on topological terms can be viewed as a systematic construction of gapped topologically ordered phases of weakly coupled gauge theories. In other cases, the weakly coupled gauge theories are gapless. So our results can be viewed as an attempt to systematically cons...

Hung, Ling-Yan

2012-01-01T23:59:59.000Z

118

Single Photon Production in Hadronic Interactions: Data from DOE laboratory experiments as compiled in data reviews by the Durham High Energy Physics Database Group  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Vogelsang and Whalley in their 1997 paper, ôA Compilation of Data on Single and Double Prompt Photon Production in Hadron-Hadron Interactionsö published in volume 23 of Journal of Physics G (Nuclear and Particle Physics) present the compilation as well as ôan interpretation of these data in terms of the æstate-of-the-art NLO theory with specific emphasis on the uncertainties involved.ö They also say, ôComparisons of this theory with the individual data sets are made in order to indicate to the reader the scope and general status of the available data. For completeness, data on two-prompt-photon production are also included in a separate small section.ö The data gathered from the relevant collaborations at DOEÆs Fermilab are available, and so are data from related collaborations based at CERN. The Durham High Energy Physics (HEP) Database Group makes these data, extracted from papers and data reviews, available in one place in an easy-to-access format. These data are also included in the Durham HEP Reaction Data Database which can be searched at http://hepdata.cedar.ac.uk/reaction

119

Nonequilibrium statistical mechanics of weakly stochastically perturbed system of oscillators  

E-Print Network [OSTI]

We consider a finite region of a $d$-dimensional lattice, $d\\in\\mathbb{N}$, of weakly coupled harmonic oscillators. The coupling is provided by a nearest-neighbour potential (harmonic or not) of size $\\varepsilon$. Each rotator weakly interacts by force of order $\\varepsilon$ with its own stochastic Langevin thermostat of arbitrary positive temperature. We investigate limiting as $\\varepsilon\\rightarrow 0$ behaviour of solutions of the system and of the local energy of oscillators on long-time intervals of order $\\varepsilon^{-1}$ and in a stationary regime. We show that it is governed by an effective equation which is a dissipative SDE with nondegenerate diffusion. Next we assume that the interaction potential is of size $\\varepsilon\\lambda$, where $\\lambda$ is another small parameter, independent from $\\varepsilon$. Solutions corresponding to this scaling describe small law temperature oscillations. We prove that in a stationary regime, under the limit $\\varepsilon\\rightarrow 0$, the main order in $\\lambda$ of the averaged Hamiltonian energy flow is proportional to the gradient of temperature. We show that the coefficient of proportionality, which we call the conductivity, admits a representation through stationary space-time correlations of the energy flow. Most of the results and convergences we obtain are uniform with respect to the number of oscillators in the system.

A. Dymov

2015-01-17T23:59:59.000Z

120

T-728: Apache Tomcat HTTP DIGEST Authentication Weaknesses Let...  

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

8: Apache Tomcat HTTP DIGEST Authentication Weaknesses Let Remote Users Conduct Bypass Attacks T-728: Apache Tomcat HTTP DIGEST Authentication Weaknesses Let Remote Users Conduct...

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


121

Theory and Modeling of Weakly Bound/Physisorbed Materials for...  

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

Theory and Modeling of Weakly BoundPhysisorbed Materials for Hydrogen Storage Theory and Modeling of Weakly BoundPhysisorbed Materials for Hydrogen Storage Presentation on the...

122

T-705: Linux Kernel Weakness in Sequence Number Generation Facilitates...  

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

5: Linux Kernel Weakness in Sequence Number Generation Facilitates Packet Injection Attacks T-705: Linux Kernel Weakness in Sequence Number Generation Facilitates Packet Injection...

123

Strong side of weak topological insulators  

Science Journals Connector (OSTI)

Three-dimensional topological insulators are classified into “strong” (STI) and “weak” (WTI) according to the nature of their surface states. While the surface states of the STI are topologically protected from localization, this does not hold for the WTI. In this work, we show that the surface states of the WTI are actually protected from any random perturbation that does not break time-reversal symmetry, and does not close the bulk energy gap. Consequently, the conductivity of metallic surfaces in the clean system remains finite even in the presence of strong disorder of this type. In the weak disorder limit, the surfaces are found to be perfect metals, and strong surface disorder only acts to push the metallic surfaces inwards. We find that the WTI differs from the STI primarily in its anisotropy, and that the anisotropy is not a sign of its weakness but rather of its richness.

Zohar Ringel; Yaacov E. Kraus; Ady Stern

2012-07-02T23:59:59.000Z

124

Strong effects in weak nonleptonic decays  

SciTech Connect (OSTI)

In this report the weak nonleptonic decays of kaons and hyperons are examined with the hope of gaining insight into a recently proposed mechanism for the ..delta..I = 1/2 rule. The effective Hamiltonian for ..delta..S = 1 weak nonleptonic decays and that for K/sup 0/-anti K/sup 0/ mixing are calculated in the six-quark model using the leading logarithmic approximation. These are used to examine the CP violation parameters of the kaon system. It is found that if Penguin-type diagrams make important contributions to K ..-->.. ..pi pi.. decay amplitudes then upcoming experiments may be able to distinguish the six-quark model for CP violation from the superweak model. The weak radiative decays of hyperons are discussed with an emphasis on what they can teach us about hyperon nonleptonic decays and the ..delta..I = 1/2 rule.

Wise, M.B.

1980-04-01T23:59:59.000Z

125

Weak Lensing: Dark Matter, Dark Energy  

SciTech Connect (OSTI)

The light rays from distant galaxies are deflected by massive structures along the line of sight, causing the galaxy images to be distorted. Measurements of these distortions, known as weak lensing, provide a way of measuring the distribution of dark matter as well as the spatial geometry of the universe. I will describe the ideas underlying this approach to cosmology. With planned large imaging surveys, weak lensing is a powerful probe of dark energy. I will discuss the observational challenges ahead and recent progress in developing multiple, complementary approaches to lensing measurements.

Jain, Bhuvnesh (University of Pennsylvania) [University of Pennsylvania

2006-02-27T23:59:59.000Z

126

Carbon Materials Breakout Group  

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

Materials Breakout Group Process Materials Breakout Group Process * Day 2, Thursday - Review results of Day 1 and modify if needed - Identify critical R&D needs - Outline R&D plan with key milestones - Report results to plenary Carbon Materials Breakout Group * Key Results - Target: get the science right to engineer carbon materials for hydrogen storage * Integrate theory, experiment, engineering * Understand mechanisms, effects, and interactions ranging from physisorption to chemisorption - Theory * Provide "directional" guidance for experiments (and vice- versa) * Provide baseline theory to elucidate parameters affecting the number and type of binding sites and the heat of their interaction with H2 (∆H ) for a broad range of (highly) modified carbon materials

127

INTRODUCTION Weakly electric fish emit an electric organ discharge (EOD) that is  

E-Print Network [OSTI]

4272 INTRODUCTION Weakly electric fish emit an electric organ discharge (EOD) that is used; Hupé and Lewis, 2008; Triefenbach and Zakon, 2008). In wave-type electric fish, the EOD is quasi proximity, their EODs interact to produce emergent amplitude modulations (AM) at the difference frequency

128

Automata groups  

E-Print Network [OSTI]

-presentation. We also find the L-presentation for several other groups generated by three-state automata, and we describe the defining relations in the Grigorchuk groups G_w. In case when the sequence w is almost periodic these relations provide an L...

Muntyan, Yevgen

2010-01-16T23:59:59.000Z

129

A Measurement of the Weak Charge of the Proton through Parity Violating Electron Scattering using the Q{sub weak} Apparatus  

SciTech Connect (OSTI)

After a decade of preparations, the Q{sub weak} experiment at Jefferson Lab is making the first direct measurement of the weak charge of the proton, Q{sub weak}. Because this quantity is suppressed in the Standard Model, a 4% result will significantly constrain new physics at the TeV scale while providing the most precise measurement of sin{sup 2}{theta}{sub W} at low energies. Operationally, we measure the small (about -0.220 ppm) parity violating asymmetry in electron-proton scattering in integrating mode while flipping the longitudinal polarization of the electrons up to 1000 times per second. Potential sources of new, parity violating interactions between electrons and light quarks include a Z', lepto-quarks, and parity violating SUSY interactions. The result presented here is based on the data taken during an initial two weeks period which included a 16.7% measurement of the parity violating electron-proton ({vec e}p) scattering asymmetry, A=-0.279{+-}0.035(stat.){+-}0.031(syst.) ppm at Q{sup 2}=0.0250{+-}0.0006(GeV){sup 2}. The weak charge of the proton is extracted by performing a global analysis on parity violating electron scattering (PVES) asymmetries on nuclear targets and it is Q{sub W}{sup p}=0.064{+-}0.012. Then effective vector couplings of the up/down quarks (C{sub 1u}/C{sub 1d}) and weak charge of the neutron are extracted by combining precise {sup 133}Cs atomic parity violating (APV) measurement and PVES measurements. The result is a proof of principle for the analysis of the full Q{sub weak} data to be completed in the near future.

Beminiwattha, Rakitha S. [SYRACUSE

2013-12-01T23:59:59.000Z

130

Quantum Trajectories based on the Weak Value  

E-Print Network [OSTI]

The notion of trajectory of an individual particle is strictly inhibited in quantum mechanics because of the uncertainty principle. Nonetheless, the weak value, which has been proposed as a novel and measurable quantity definable to any quantum observable, can offer a possible description of trajectory on account of its statistical nature of the value. In this paper, we explore the physical significance provided by this weak trajectory by considering various situations where interference takes place simultaneously with the observation of particles, that is, in prototypical quantum situations for which no classical treatment is available. These include the double slit experiment and Lloyd's mirror, where in the former case it is argued that the real part of the weak trajectory describes an average over the possible classical trajectories involved in the process, and that the imaginary part is related to the variation of interference. It is shown that this average interpretation of the weak trajectory holds universally under the complex probability defined from the given transition process. These features remain essentially unaltered in the case of Lloyd's mirror where interference occurs with a single slit.

Takuya Mori; Izumi Tsutsui

2014-12-02T23:59:59.000Z

131

Learning discriminative localization from weakly labeled data  

Science Journals Connector (OSTI)

Visual categorization problems, such as object classification or action recognition, are increasingly often approached using a detection strategy: a classifier function is first applied to candidate subwindows of the image or the video, and then the ... Keywords: Discriminative discovery, Event detection, Image classification, Object detection, Time series classification, Weakly supervised learning

Minh Hoai; Lorenzo Torresani; Fernando De La Torre; Carsten Rother

2014-03-01T23:59:59.000Z

132

Reversing entanglement change by a weak measurement  

E-Print Network [OSTI]

PHYSICAL REVIEW A 82, 052323 (2010) Reversing entanglement change by a weak measurement Qingqing Sun,1,* M. Al-Amri,2 Luiz Davidovich,3 and M. Suhail Zubairy1 1Department of Physics and Institute for Quantum Science and Engineering, Texas A...

Sun, Qingqing; Al-Amri, M.; Davidovich, Luiz; Zubairy, M. Suhail.

2010-01-01T23:59:59.000Z

133

Interactions plasmas toile-plante Implications & dtectabilit  

E-Print Network [OSTI]

pour les jupiters chauds · Observations #12;· Kinetic energy flux on obstacle cross-section : Pk ~ NmV2;Flow Obstacle Weakly/Not magnetized (Solar wind) Strongly magnetized (Jovian magnetosphere) Weakly V Robs 2 N=No/d2 No=5 cm-3 m~1.1�mp Solar wind - magnetosphere interaction [Akasofu, 1981, 1982

Demoulin, Pascal

134

Proton-Proton Weak Capture in Chiral Effective Field Theory  

SciTech Connect (OSTI)

The astrophysical $S$-factor for proton-proton weak capture is calculated in chiral effective field theory over the center-of-mass relative-energy range 0--100 keV. The chiral two-nucleon potential derived up to next-to-next-to-next-to leading order is augmented by the full electromagnetic interaction including, beyond Coulomb, two-photon and vacuum-polarization corrections. The low-energy constants (LEC's) entering the weak current operators are fixed so as to reproduce the $A=3$ binding energies and magnetic moments, and the Gamow-Teller matrix element in tritium $\\beta$ decay. Contributions from $S$ and $P$ partial waves in the incoming two-proton channel are retained. The $S$-factor at zero energy is found to be $S(0)=(4.030 \\pm 0.006)\\times 10^{-23}$ MeV fm$^2$, with a $P$-wave contribution of $0.020\\times 10^{-23}$ MeV fm$^2$. The theoretical uncertainty is due to the fitting procedure of the LEC's and to the cutoff dependence. It is shown that polynomial fits to parametrize the energy dependence of the $S$-factor are inherently unstable.

Marcucci, Laura Elisa [Pisa U., INFN-Pisa; Schiavilla, Rocco [Old Dominion U., JLAB; Viviani, MIchele [INFN-Pisa

2013-05-01T23:59:59.000Z

135

at the DTIC Research groups (I/II)  

E-Print Network [OSTI]

/im_proc_a.htm #12;Image Processing Group (GPI) #12;Music Technology Group (MTG) · Head of the group: Xavier SerraResearch at the DTIC #12;Research groups (I/II) · Image Processing Group (GPI) · Music Technology Group (MTG) · Distributed Multimedia Applications Group (DMAG) · Interactive Technologies Group (GTI

Verschure, Paul

136

Aerodynamic Effects in Weakly Ionized Gas: Phenomenology and Applications  

SciTech Connect (OSTI)

Aerodynamic effects in ionized gases, often neglected phenomena, have been subject of a renewed interest in recent years. After a brief historical account, we discuss a selected number of effects and unresolved problems that appear to be relevant in both aeronautic and propulsion applications in subsonic, supersonic, and hypersonic flow. Interaction between acoustic shock waves and weakly ionized gas is manifested either as plasma-induced shock wave dispersion and acceleration or as shock-wave induced double electric layer in the plasma, followed by the localized increase of the average electron energy and density, as well as enhancement of optical emission. We describe the phenomenology of these effects and discuss several experiments that still do not have an adequate interpretation. Critical for application of aerodynamic effects is the energy deposition into the flow. We classify and discuss some proposed wall-free generation schemes with respect to the efficiency of energy deposition and overall generation of the aerodynamic body force.

Popovic, S.; Vuskovic, L. [Department of Physics, Old Dominion University, Norfolk, Virginia (United States)

2006-12-01T23:59:59.000Z

137

MEA BREAKOUT GROUP  

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

MEA BREAKOUT GROUP MEA BREAKOUT GROUP TOPICS FOCUSED ON CCMs * IONOMER * CATALYST LAYER * PERFORMANCE * DEGRADATION * FUNDAMENTAL STUDIES IONOMER * DEVELOP IMPROVED IONOMERS: PERFLUORINATED IONOMERS (O2 SOLUBILITY) HYDROCARBON IONOMERS * ANODE FLOODING ISSUES, CATHODE DRYOUT ISSUES: - DEVELOP SEPARATE IONOMERS FOR ANODE/CATHODE - IONOMER CHEMISTRY * IONOMER/CATALYST INTERACTION * CL / MEMBRANE INTERACTION * IMPROVED CL/M INTERFACES - IONOMER CROSSLINKING CATALYST LAYER * CATALYST CHALLENGES IN ANODE SIDE * FOCUS ON NON-PGM CATALYSTS * INK FORMULATION * CCM VS. GDE * DELAMINATION PERFORMANCE * BACKUP POWER APPLICATION - STATUS: 60C, 0.5V, 0.2W/CM2 (DEGRADATION ISSUES) - TARGETS: SHOULD BE SET CONSISTENT WITH DOE STATIONARY TARGETS (2015) * AUTOMOTIVE APPLICATION - INCREASE POWER DENSITY TO >0.5W/CM2

138

Helicity Observation of Weak and Strong Fields  

E-Print Network [OSTI]

We report in this letter our analysis of a large sample of photospheric vector magnetic field measurements. Our sample consists of 17200 vector magnetograms obtained from January 1997 to August 2004 by Huairou Solar Observing Station of the Chinese National Astronomical Observatory. Two physical quantities, $\\alpha$ and current helicity, are calculated and their signs and amplitudes are studied in a search for solar cycle variations. Different from other studies of the same type, we calculate these quantities for weak ($100G1000G$) fields separately. For weak fields, we find that the signs of both $\\alpha$ and current helicity are consistent with the established hemispheric rule during most years of the solar cycle and their magnitudes show a rough tendency of decreasing with the development of solar cycle. Analysis of strong fields gives an interesting result: Both $\\alpha$ and current helicity present a sign opposite to that of weak fields. Implications of these observations on dynamo theory and helicity production are also briefly discussed.

Mei Zhang

2006-06-09T23:59:59.000Z

139

Weak reactions with light nuclei - 6He beta-decay as a test case for the nuclear weak current  

E-Print Network [OSTI]

We present a microscopic calculation of the 6He beta-decay into the ground state of 6Li. To this end we use the impulse approximation to describe the nuclear weak current. The ground state wave functions are obtained from the solution of the nuclear 6-body problem. The nucleonnucleon interaction is described via the J-matrix inverse scattering potential (JISP), and the nuclear problem is solved using the hyperspherical-harmonics approach. This approach results in numerical accuracy of about 2 per mil in the transition matrix element. Bearing in mind that the contribution of meson-exchange currents to the transition matrix element is about 5%, these results pave the way for accurate estimation of their effect.

Doron Gazit; Sergey Vaintraub; Nir Barnea

2009-01-18T23:59:59.000Z

140

BCS Object-Oriented Programming and Systems Specialist Group  

Science Journals Connector (OSTI)

......the nuts and bolts of the technology, the Business Information...and weaknesses of various technologies,' says membership secretary...Specialist Group ? Object Technology '98 is for 'everyone from...distributed computing and intranets. For the first time there......

BCS Object-Oriented Programming; Systems Specialist Group

1998-03-01T23:59:59.000Z

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


141

Q-weak: First Direct Measurement of the Weak Charge of the Proton  

E-Print Network [OSTI]

The Q-weak experiment at Hall C of Thomas Jefferson National Accelerator Facility has made the first direct measurement of the weak charge of the proton, Qweak(p), through a precision measurement of the parity-violating asymmetry in elastic e-p scattering at low momentum transfer Q^2= 0.025 (GeV/c)^2 with incident electron beam energy of 1.155 GeV. The Q-weak experiment, along with earlier results of parity violating elastic scattering experiments, is expected to determine the most precise value of Qweak(p) which is suppressed in the Standard Model. If this result is further combined with the 133Cs atomic parity violation (APV) measurement, significant constraints on the weak charge of the up quark, down quark, and neutron can be extracted. This data will also be used to determine the weak-mixing angle, sin^2 theta_?W, with a relative uncertainty of < 0.5% that will provide a competitive measurement of the running of sin^2 theta_?W to low Q^2. An overview of the experiment and its results using the commissioning dataset, constituting approximately 4% of the data collected in the experiment, are reported here.

Nuruzzaman

2013-12-20T23:59:59.000Z

142

Spurious Shear in Weak Lensing with LSST  

SciTech Connect (OSTI)

The complete 10-year survey from the Large Synoptic Survey Telescope (LSST) will image {approx} 20,000 square degrees of sky in six filter bands every few nights, bringing the final survey depth to r {approx} 27.5, with over 4 billion well measured galaxies. To take full advantage of this unprecedented statistical power, the systematic errors associated with weak lensing measurements need to be controlled to a level similar to the statistical errors. This work is the first attempt to quantitatively estimate the absolute level and statistical properties of the systematic errors on weak lensing shear measurements due to the most important physical effects in the LSST system via high fidelity ray-tracing simulations. We identify and isolate the different sources of algorithm-independent, additive systematic errors on shear measurements for LSST and predict their impact on the final cosmic shear measurements using conventional weak lensing analysis techniques. We find that the main source of the errors comes from an inability to adequately characterise the atmospheric point spread function (PSF) due to its high frequency spatial variation on angular scales smaller than {approx} 10{prime} in the single short exposures, which propagates into a spurious shear correlation function at the 10{sup -4}-10{sup -3} level on these scales. With the large multi-epoch dataset that will be acquired by LSST, the stochastic errors average out, bringing the final spurious shear correlation function to a level very close to the statistical errors. Our results imply that the cosmological constraints from LSST will not be severely limited by these algorithm-independent, additive systematic effects.

Chang, C.; Kahn, S.M.; Jernigan, J.G.; Peterson, J.R.; AlSayyad, Y.; Ahmad, Z.; Bankert, J.; Bard, D.; Connolly, A.; Gibson, R.R.; Gilmore, K.; Grace, E.; Hannel, M.; Hodge, M.A.; Jee, M.J.; Jones, L.; Krughoff, S.; Lorenz, S.; Marshall, P.J.; Marshall, S.; Meert, A.

2012-09-19T23:59:59.000Z

143

Lossy compression of weak lensing data  

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

Future orbiting observatories will survey large areas of sky in order to constrain the physics of dark matter and dark energy using weak gravitational lensing and other methods. Lossy compression of the resultant data will improve the cost and feasibility of transmitting the images through the space communication network. We evaluate the consequences of the lossy compression algorithm of Bernstein et al. (2010) for the high-precision measurement of weak-lensing galaxy ellipticities. This square-root algorithm compresses each pixel independently, and the information discarded is by construction less than the Poisson error from photon shot noise. For simulated space-based images (without cosmic rays) digitized to the typical 16 bits per pixel, application of the lossy compression followed by image-wise lossless compression yields images with only 2.4 bits per pixel, a factor of 6.7 compression. We demonstrate that this compression introduces no bias in the sky background. The compression introduces a small amount of additional digitization noise to the images, and we demonstrate a corresponding small increase in ellipticity measurement noise. The ellipticity measurement method is biased by the addition of noise, so the additional digitization noise is expected to induce a multiplicative bias on the galaxies measured ellipticities. After correcting for this known noise-induced bias, we find a residual multiplicative ellipticity bias of m {approx} -4 x 10{sup -4}. This bias is small when compared to the many other issues that precision weak lensing surveys must confront, and furthermore we expect it to be reduced further with better calibration of ellipticity measurement methods.

Vanderveld, R Ali [Chicago U., EFI; Caltech /Caltech, JPL; Bernstein, Gary M [Pennsylvania U.; Stoughton, Chris [Fermilab; Rhodes, Jason [Caltech; Caltech, JPL; Massey, Richard [Royal Observ., Edinburgh; Dobke, Benjamin M [Caltech; Caltech, JPL

2011-06-01T23:59:59.000Z

144

at the DTIC Research groups (I/II)  

E-Print Network [OSTI]

Research at the DTIC #12;Research groups (I/II) · Image Processing Group (GPI) · Music Technology Group (MTG) · Interactive Technologies Group (GTI) · Computational Imaging and Simulation Technologies groups (II/II) · Natural Language Processing Research Group (NLP) · Artificial Intelligence Group (AI

145

Nuclear magnetic resonances in weak fields  

E-Print Network [OSTI]

first choax@ation of nuclear resonances in weak f le). de was sade by k 0, S~ in fiel4u of 6 and lg gauss using a sanple siue of. 1 liter, The nagnetic fields were produced in a solenoi4 pou?x?d by a bazdz of lead storage batteriesx an4 the resonances..., Tbe poser was pxovided for the static nagnetic field by a bank of 20 lead storage cells connected in ssriesi The current was a+usted to the desired value with a variable xesistanoe which was connected in sex'ies with the solenoid. Qm source of field...

Mitchell, Richard Warren

2012-06-07T23:59:59.000Z

146

Contradiction and grammar : the case of weak islands  

E-Print Network [OSTI]

This thesis is about weak islands. Weak islands are contexts that are transparent to some but not all operator-variable dependencies. For this reason, they are also sometimes called selective islands. Some paradigmatic ...

Abrusán, Márta

2007-01-01T23:59:59.000Z

147

Weak Values and Direct Measurement of the Quantum Wavefunction  

Science Journals Connector (OSTI)

We review recent work showing that weak values and weak measurements can be used to perform certain measurements with unprecedented accuracy and moreover can be used to perform a...

Boyd, Robert W

148

The Particle Adventure | What holds it together? | Interaction summary  

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

Interaction summary Interaction summary Interaction summary This is a summary of the different interactions, their force carrier particles, and what particles they act on: Which fundamental interaction is responsible for: Friction? Answer Friction is caused by residual electromagnetic interactions between the atoms of the two materials. Nuclear bonding? Answer Nuclear bonding is caused by residual strong interactions between the various parts of the nucleus. Planetary orbits? Answer The planets orbit because of the gravity that attracts them to the sun! Even though gravity is a relatively weak force, it still has very important effects on the world. Other questions: Which interactions act on neutrinos? Answer Weak and Gravity Which interaction has heavy carriers? Answer Weak (W+, W-, and Z)

149

Simulating weak localization using superconducting quantum circuits  

E-Print Network [OSTI]

Understanding complex quantum matter presents a central challenge in condensed matter physics. The difficulty lies in the exponential scaling of the Hilbert space with the system size, making solutions intractable for both analytical and conventional numerical methods. As originally envisioned by Richard Feynman, this class of problems can be tackled using controllable quantum simulators. Despite many efforts, building an quantum emulator capable of solving generic quantum problems remains an outstanding challenge, as this involves controlling a large number of quantum elements. Here, employing a multi-element superconducting quantum circuit and manipulating a single microwave photon, we demonstrate that we can simulate the weak localization phenomenon observed in mesoscopic systems. By engineering the control sequence in our emulator circuit, we are also able to reproduce the well-known temperature dependence of weak localization. Furthermore, we can use our circuit to continuously tune the level of disorder, a parameter that is not readily accessible in mesoscopic systems. By demonstrating a high level of control and complexity, our experiment shows the potential for superconducting quantum circuits to realize scalable quantum simulators.

Yu Chen; P. Roushan; D. Sank; C. Neill; Erik Lucero; Matteo Mariantoni; R. Barends; B. Chiaro; J. Kelly; A. Megrant; J. Y. Mutus; P. J. J. O'Malley; A. Vainsencher; J. Wenner; T. C. White; Yi Yin; A. N. Cleland; John M. Martinis

2014-03-26T23:59:59.000Z

150

Weak Lensing Predictions at Intermediate Scales  

E-Print Network [OSTI]

As pointed out in previous studies, the measurement of the skewness of the convergence field $\\kappa$ will be useful in breaking the degeneracy among the cosmological parameters constrained from weak lensing observations. The combination of shot noise and finite survey volume implies that such a measurement is likely to be done in a range of intermediate scales ($0.5'$ to 20') where neither perturbation theory nor the hierarchical ansatz apply. Here we explore the behavior of the skewness of $\\kappa$ at these intermediate scales, based on results for the non-linear evolution of the mass bispectrum. We combined different ray-tracing simulations to test our predictions, and we find that our calculations describe accurately the transition from the weakly non-linear to the strongly non-linear regime. We show that the single lens-plane approximation remains accurate even in the non-linear regime, and we explicitly calculate the corrections to this approximation. We also discuss the prospects of measuring the skewn...

Van Waerbeke, L; Scoccimarro, R; Colombi, S; Bernardeau, F

2000-01-01T23:59:59.000Z

151

Renormalization Group and the Ricci flow  

E-Print Network [OSTI]

We discuss from a geometric point of view the connection between the renormalization group flow for non--linear sigma models and the Ricci flow. This offers new perspectives in providing a geometrical landscape for 2D quantum field theories. In particular we argue that the structure of Ricci flow singularities suggests a natural way for extending, beyond the weak coupling regime, the embedding of the Ricci flow into the renormalization group flow.

Mauro Carfora

2010-01-20T23:59:59.000Z

152

A Primer for Electro-Weak Induced Low Energy Nuclear Reactions  

E-Print Network [OSTI]

In a series of papers, cited in the main body of the paper below, detailed calculations have been presented which show that electromagnetic and weak interactions can induce low energy nuclear reactions to occur with observable rates for a variety of processes. A common element in all these applications is that the electromagnetic energy stored in many relatively slow moving electrons can -under appropriate circumstances- be collectively transferred into fewer, much faster electrons with energies sufficient for the latter to combine with protons (or deuterons, if present) to produce neutrons via weak interactions. The produced neutrons can then initiate low energy nuclear reactions through further nuclear transmutations. The aim of this paper is to extend and enlarge upon various examples analyzed previously, present simplified order of magnitude estimates for each and to illuminate a common unifying theme amongst all of them.

Y. N. Srivastava; A. Widom; L. Larsen

2008-10-01T23:59:59.000Z

153

A Hybrid Strong/Weak Coupling Approach to Jet Quenching  

E-Print Network [OSTI]

We propose and explore a new hybrid approach to jet quenching in a strongly coupled medium. The basis of this phenomenological approach is to treat physics processes at different energy scales differently. The high-$Q^2$ processes associated with the QCD evolution of the jet from production as a single hard parton through its fragmentation, up to but not including hadronization, are treated perturbatively. The interactions between the partons in the shower and the deconfined matter within which they find themselves lead to energy loss. The momentum scales associated with the medium (of the order of the temperature) and with typical interactions between partons in the shower and the medium are sufficiently soft that strongly coupled physics plays an important role in energy loss. We model these interactions using qualitative insights from holographic calculations of the energy loss of energetic light quarks and gluons in a strongly coupled plasma, obtained via gauge/gravity duality. We embed this hybrid model into a hydrodynamic description of the spacetime evolution of the hot QCD matter produced in heavy ion collisions and confront its predictions with jet data from the LHC. The holographic expression for the energy loss of a light quark or gluon that we incorporate in our hybrid model is parametrized by a stopping distance. We find very good agreement with all the data as long as we choose a stopping distance that is comparable to but somewhat longer than that in ${\\cal N}=4$ supersymmetric Yang-Mills theory. For comparison, we also construct alternative models in which energy loss occurs as it would if the plasma were weakly coupled. We close with suggestions of observables that could provide more incisive evidence for, or against, the importance of strongly coupled physics in jet quenching.

Jorge Casalderrey-Solana; Doga Can Gulhan; José Guilherme Milhano; Daniel Pablos; Krishna Rajagopal

2014-06-26T23:59:59.000Z

154

Kinetic roughening of aggregates of patchy colloids with strong and weak bonds  

E-Print Network [OSTI]

We study the irreversible aggregation of films of patchy spherical colloids with directional and selective interactions. We report a crossover of the interfacial roughening from the Kardar-Parisi-Zhang (KPZ) to the KPZ with quenched disorder (KPZQ) universality class when the difference between the strong and weak bonds is sufficiently large. We calculate the critical exponents and identify the crossover between the two regimes.

C. S. Dias; N. A. M. Araújo; M. M. Telo da Gama

2014-07-09T23:59:59.000Z

155

Abelian groups  

E-Print Network [OSTI]

s a 1-1 mapping. Also (na + ma)c' [(n + m)a]c ge (n + m)b ra nb + mb gt (na)c + (ma)o. Thus a is a homomorphism, and th1s together with the above tells us that a is an isomorphism. Hence (2) is proved, and thus the theorem, Definition 2 e6 If a...t o e. d ix elexext x oi s dross G is ~dvdsdt s by' n if there exists y such that ny rx x, As sn example of divisibility we note that the element 0 is divisible by every integer. Also, in the additive group of' xational numbers, we note every...

Bolen, James Cordell

2012-06-07T23:59:59.000Z

156

Graphene transparency in weak magnetic fields  

E-Print Network [OSTI]

We carry out an explicit calculation of the vacuum polarization tensor for an effective low-energy model of monolayer graphene in the presence of a weak magnetic field of intensity $B$ perpendicularly aligned to the membrane. By expanding the quasiparticle propagator in the Schwinger proper time representation up to order $(eB)^2$, where $e$ is the unit charge, we find an explicitly transverse tensor, consistent with gauge invariance. Furthermore, assuming that graphene is radiated with monochromatic light of frequency $\\omega$ along the external field direction, from the modified Maxwell's equations we derive the intensity of transmitted light and the angle of polarization rotation in terms of the longitudinal ($\\sigma_{xx}$) and transverse ($\\sigma_{xy}$) conductivities. Corrections to these quantities, both calculated and measured, are of order $(eB)^2/\\omega^4$. Our findings generalize and complement previously known results reported in literature regarding the light absorption problem in graphene from th...

Valenzuela, David; Loewe, Marcelo; Raya, Alfredo

2014-01-01T23:59:59.000Z

157

Modeling active electrolocation in weakly electric fish  

E-Print Network [OSTI]

In this paper, we provide a mathematical model for the electrolocation in weakly electric fishes. We first investigate the forward complex conductivity problem and derive the approximate boundary conditions on the skin of the fish. Then we provide a dipole approximation for small targets away from the fish. Based on this approximation, we obtain a non-iterative location search algorithm using multi-frequency measurements. We present numerical experiments to illustrate the performance and the stability of the proposed multi-frequency location search algorithm. Finally, in the case of disk- and ellipse-shaped targets, we provide a method to reconstruct separately the conductivity, the permittivity, and the size of the targets from multi-frequency measurements.

Habib Ammari; Thomas Boulier; Josselin Garnier

2012-03-05T23:59:59.000Z

158

The Q_weak Experimental Apparatus  

E-Print Network [OSTI]

The Jefferson Lab Q_weak experiment determined the weak charge of the proton by measuring the parity-violating elastic scattering asymmetry of longitudinally polarized electrons from an unpolarized liquid hydrogen target at small momentum transfer. A custom apparatus was designed for this experiment to meet the technical challenges presented by the smallest and most precise ${\\vec{e}}$p asymmetry ever measured. Technical milestones were achieved at Jefferson Lab in target power, beam current, beam helicity reversal rate, polarimetry, detected rates, and control of helicity-correlated beam properties. The experiment employed 180 microA of 89% longitudinally polarized electrons whose helicity was reversed 960 times per second. The electrons were accelerated to 1.16 GeV and directed to a beamline with extensive instrumentation to measure helicity-correlated beam properties that can induce false asymmetries. Moller and Compton polarimetry were used to measure the electron beam polarization to better than 1%. The electron beam was incident on a 34.4 cm liquid hydrogen target. After passing through a triple collimator system, scattered electrons between 5.8 degrees and 11.6 degrees were bent in the toroidal magnetic field of a resistive copper-coil magnet. The electrons inside this acceptance were focused onto eight fused silica Cerenkov detectors arrayed symmetrically around the beam axis. A total scattered electron rate of about 7 GHz was incident on the detector array. The detectors were read out in integrating mode by custom-built low-noise pre-amplifiers and 18-bit sampling ADC modules. The momentum transfer Q^2 = 0.025 GeV^2 was determined using dedicated low-current (~100 pA) measurements with a set of drift chambers before (and a set of drift chambers and trigger scintillation counters after) the toroidal magnet.

Qweak Collaboration; T. Allison; M. Anderson; D. Androic; D. S. Armstrong; A. Asaturyan; T. D. Averett; R. Averill; J. Balewski; J. Beaufait; R. S. Beminiwattha; J. Benesch; F. Benmokhtar; J. Bessuille; J. Birchall; E. Bonnell; J. Bowman; P. Brindza; D. B. Brown; R. D. Carlini; G. D. Cates; B. Cavness; G. Clark; J. C. Cornejo; S. Covrig Dusa; M. M. Dalton; C. A. Davis; D. C. Dean; W. Deconinck; J. Diefenbach; K. Dow; J. F. Dowd; J. A. Dunne; D. Dutta; W. S. Duvall; J. R. Echols; M. Elaasar; W. R. Falk; K. D. Finelli; J. M. Finn; D. Gaskell; M. T. W. Gericke; J. Grames; V. M. Gray; K. Grimm; F. Guo; J. Hansknecht; D. J. Harrison; E. Henderson; J. R. Hoskins; E. Ihloff; K. Johnston; D. Jones; M. Jones; R. Jones; M. Kargiantoulakis; J. Kelsey; N. Khan; P. M. King; E. Korkmaz; S. Kowalski; A. Kubera; J. Leacock; J. P. Leckey; A. R. Lee; J. H. Lee; L. Lee; Y. Liang; S. MacEwan; D. Mack; J. A. Magee; R. Mahurin; J. Mammei; J. W. Martin; A. McCreary; M. H. McDonald; M. J. McHugh; P. Medeiros; D. Meekins; J. Mei; R. Michaels; A. Micherdzinska; A. Mkrtchyan; H. Mkrtchyan; N. Morgan; J. Musson; K. E. Mesick; A. Narayan; L. Z. Ndukum; V. Nelyubin; Nuruzzaman; W. T. H. van Oers; A. K. Opper; S. A. Page; J. Pan; K. D. Paschke; S. K. Phillips; M. L. Pitt; M. Poelker; J. F. Rajotte; W. D. Ramsay; W. R. Roberts; J. Roche; P. W. Rose; B. Sawatzky; T. Seva; M. H. Shabestari; R. Silwal; N. Simicevic; G. R. Smith; S. Sobczynski; P. Solvignon; D. T. Spayde; B. Stokes; D. W. Storey; A. Subedi; R. Subedi; R. Suleiman; V. Tadevosyan; W. A. Tobias; V. Tvaskis; E. Urban; B. Waidyawansa; P. Wang; S. P. Wells; S. A. Wood; S. Yang; S. Zhamkochyan; R. B. Zielinski

2015-01-06T23:59:59.000Z

159

Magnified Weak Lensing Cross Correlation Tomography  

SciTech Connect (OSTI)

This project carried out a weak lensing tomography (WLT) measurement around rich clusters of galaxies. This project used ground based photometric redshift data combined with HST archived cluster images that provide the WLT and cluster mass modeling. The technique has already produced interesting results (Guennou et al, 2010,Astronomy & Astrophysics Vol 523, page 21, and Clowe et al, 2011 to be submitted). Guennou et al have validated that the necessary accuracy can be achieved with photometric redshifts for our purposes. Clowe et al titled "The DAFT/FADA survey. II. Tomographic weak lensing signal from 10 high redshift clusters," have shown that for the **first time** via this purely geometrical technique, which does not assume a standard rod or candle, that a cosmological constant is **required** for flat cosmologies. The intent of this project is not to produce the best constraint on the value of the dark energy equation of state, w. Rather, this project is to carry out a sustained effort of weak lensing tomography that will naturally feed into the near term Dark Energy Survey (DES) and to provide invaluable mass calibration for that project. These results will greatly advance a key cosmological method which will be applied to the top-rated ground-based project in the Astro2020 decadal survey, LSST. Weak lensing tomography is one of the key science drivers behind LSST. CO-I Clowe is on the weak lensing LSST committee, and senior scientist on this project, at FNAL James Annis, plays a leading role in the DES. This project has built on successful proposals to obtain ground-based imaging for the cluster sample. By 1 Jan, it is anticipated the project will have accumulated complete 5-color photometry on 30 (or about 1/3) of the targeted cluster sample (public webpage for the survey is available at http://cencos.oamp.fr/DAFT/ and has a current summary of the observational status of various clusters). In all, the project has now been awarded the equivalent of over 60 nights on 4-m class telescopes, which gives concrete evidence of strong community support for this project. The WLT technique is based on the dependence of the gravitational shear signal on the angular diameter distances between the observer, the lens, and the lensed galaxy to measure cosmological parameters. By taking the ratio of measured shears of galaxies with different redshifts around the same lens, one obtains a measurement of the ratios of the angular diameter distances involved. Making these observations over a large range of lenses and background galaxy redshifts will measure the history of the expansion rate of the universe. Because this is a purely geometric measurement, it is insensitive to any form of evolution of objects or the necessity to understand the physics in the early universe. Thus, WLT was identified by the Dark Energy Task Force as perhaps the best method to measure the evolution of DE. To date, however, the conjecture of the DETF has not been experimentally verified, but will be by the proposed project. The primary reason for the lack of tomography measurements is that one must have an exceptional data-set to attempt the measurement. One needs both extremely good seeing (or space observations) in order to minimize the point spread function smearing corrections on weak lensing shear measurements and deep, multi-color data, from B to z, to measure reliable photometric redshifts of the background galaxies being lensed (which are typically too faint to obtain spectroscopic redshifts). Because the entire process from multi-drizzling the HST images, and then creating shear maps, to gathering the necessary ground based observations, to generating photo-zs and then carrying out the tomography is a complicated task, until the creation of our team, nobody has taken the time to connect all the levels of expertise necessary to carry out this project based on HST archival data. Our data are being used in 2 Ph.D. theses. Kellen Murphy, at Ohio University, is using the tomography data along with simulations in a thesis expected to be completed in Jun

Ulmer, Melville P., Clowe, Douglas I.

2010-11-30T23:59:59.000Z

160

Microscopic Description of Entanglements in Polyethylene Networks and Melts: Strong, Weak, Pairwise, and Collective Attributes  

E-Print Network [OSTI]

We present atomistic molecular dynamics simulations of two Polyethylene systems where all entanglements are trapped: a perfect network, and a melt with grafted chain ends. We examine microscopically at what level topological constraints can be considered as a collective entanglement effect, as in tube model theories, or as certain pairwise uncrossability interactions, as in slip-link models. A pairwise parameter, which varies between these limiting cases, shows that, for the systems studied, the character of the entanglement environment is more pairwise than collective. We employ a novel methodology, which analyzes entanglement constraints into a complete set of pairwise interactions, similar to slip links. Entanglement confinement is assembled by a plethora of links, with a spectrum of confinement strengths, from strong to weak. The strength of interactions is quantified through a link `persistence', which is the fraction of time for which the links are active. By weighting links according to their strength, we show that confinement is imposed mainly by the strong ones, and that the weak, trapped, uncrossability interactions cannot contribute to the low frequency modulus of an elastomer, or the plateau modulus of a melt. A self-consistent scheme for mapping topological constraints to specific, strong binary links, according to a given entanglement density, is proposed and validated. Our results demonstrate that slip links can be viewed as the strongest pairwise interactions of a collective entanglement environment. The methodology developed provides a basis for bridging the gap between atomistic simulations and mesoscopic slip link models.

Stefanos D. Anogiannakis; Christos Tzoumanekas; Doros N. Theodorou

2013-01-30T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

arXiv:nucl-th/001006118Oct2000 INTERACTIONS, CURRENTS, AND THE STRUCTURE OF  

E-Print Network [OSTI]

form factors, -decays, radiative and weak capture reactions at low energies, inclusive response on two- and three- nucleon interactions and associated electro-weak currents. Low-energy radiative to hadronic and electro-weak probes at intermediate energies. In the present talk, I will review the "nuclear

Thomas Jefferson National Accelerator Facility

162

SSRL ETS Group  

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

STANFORD SYNCHROTRON RADIATION LABORATORY Stanford Linear Accelerator Center Engineering & Technical Services Groups: Mechanical Services Group Mechanical Services Group Sharepoint...

163

Degenerate weakly nonlinear elastic plane waves  

E-Print Network [OSTI]

Weakly nonlinear plane waves are considered in hyperelastic crystals. Evolution equations are derived at a quadratically nonlinear level for the amplitudes of quasi-longitudinal and quasi-transverse waves propagating in arbitrary anisotropic media. The form of the equations obtained depends upon the direction of propagation relative to the crystal axes. A single equation is found for all propagation directions for quasi-longitudinal waves, but a pair of coupled equations occurs for quasi-transverse waves propagating along directions of degeneracy, or acoustic axes. The coupled equations involve four material parameters but they simplify if the wave propagates along an axis of material symmetry. Thus, only two parameters arise for propagation along an axis of two-fold symmetry, and one for a three-fold axis. The transverse wave equations decouple if the axis is four-fold or higher. In the absence of a symmetry axis it is possible that the evolution equations of the quasi-transverse waves decouple if the third order elastic moduli satisfy a certain identity. The theoretical results are illustrated with explicit examples.

W?odzimierz Doma?ski; Andrew N. Norris

2008-12-18T23:59:59.000Z

164

Graphene transparency in weak magnetic fields  

E-Print Network [OSTI]

We carry out an explicit calculation of the vacuum polarization tensor for an effective low-energy model of monolayer graphene in the presence of a weak magnetic field of intensity $B$ perpendicularly aligned to the membrane. By expanding the quasiparticle propagator in the Schwinger proper time representation up to order $(eB)^2$, where $e$ is the unit charge, we find an explicitly transverse tensor, consistent with gauge invariance. Furthermore, assuming that graphene is radiated with monochromatic light of frequency $\\omega$ along the external field direction, from the modified Maxwell's equations we derive the intensity of transmitted light and the angle of polarization rotation in terms of the longitudinal ($\\sigma_{xx}$) and transverse ($\\sigma_{xy}$) conductivities. Corrections to these quantities, both calculated and measured, are of order $(eB)^2/\\omega^4$. Our findings generalize and complement previously known results reported in literature regarding the light absorption problem in graphene from the experimental and theoretical points of view, with and without external magnetic fields.

David Valenzuela; Saúl Hernández-Ortiz; Marcelo Loewe; Alfredo Raya

2014-10-20T23:59:59.000Z

165

Weak nuclear forces cause the strong nuclear force  

E-Print Network [OSTI]

We determine the strength of the weak nuclear force which holds the lattices of the elementary particles together. We also determine the strength of the strong nuclear force which emanates from the sides of the nuclear lattices. The strong force is the sum of the unsaturated weak forces at the surface of the nuclear lattices. The strong force is then about ten to the power of 6 times stronger than the weak force between two lattice points.

E. L. Koschmieder

2007-12-11T23:59:59.000Z

166

CP-odd weak basis invariants and texture zeros  

Science Journals Connector (OSTI)

We construct the CP-odd weak basis invariants from the neutrino mass matrix in a weak basis, in which the charged lepton mass matrix is diagonal, and find the necessary and sufficient conditions for CP conservation. We study the interrelationships between different CP-odd weak basis invariants to examine their implications for the Dirac- and Majorana-type CP violating phases for the phenomenologically allowed Frampton-Glashow-Marfatia texture zero structures of the neutrino mass matrix.

S. Dev; Sanjeev Kumar; Surender Verma

2009-02-20T23:59:59.000Z

167

Weak lensing tomography with orthogonal polynomials  

Science Journals Connector (OSTI)

......of multiple polynomials lifts degeneracies. The assumption...polynomials, and as a last point we investigate how errors...structure has been detected by four independent research groups...Additionally, we would like to point out that line-of-sight...both arguments. Starting point for the construction of......

Björn Malte Schäfer; Lavinia Heisenberg

2012-07-11T23:59:59.000Z

168

Coherence oscillations between weakly coupled Bose-Hubbard dimers  

E-Print Network [OSTI]

We study theoretically the dynamics of two weakly-coupled Bose-Josephson junctions, prepared with the same particle number $N$ and Josephson excitation number $\

Christine Khripkov; Amichay Vardi

2014-05-11T23:59:59.000Z

169

Weak and Strong Superiorization: Between Feasibility-Seeking and ...  

E-Print Network [OSTI]

Sep 30, 2014 ... This does not create any ambiguity because whether we consider an ... A fundamental difference between weak and strong superiorization lies.

User

2014-10-01T23:59:59.000Z

170

Phenomenology and cosmology of weakly coupled string theory  

E-Print Network [OSTI]

ph/9805320 May 1998 Phenomenology and cosmology of weaklyThe important point for phenomenology is the decomposition2]. Implications for phenomenology and open questions The

Gaillard, Mary K.

1998-01-01T23:59:59.000Z

171

DUST-PLASMA INTERACTIONS  

SciTech Connect (OSTI)

The objective of our theoretical research under this grant over the past 3 years was to develop new understanding in a range of topics in the physics of dust-plasma interactions, with application to space and the laboratory. We conducted studies related to the physical properties of dust, waves and instabilities in both weakly coupled and strongly coupled dusty plasmas, and innovative possible applications. A major consideration in our choice of topics was to compare theory with experiments or observations, and to motivate new experiments, which we believe is important for developing this relatively new field. Our research is summarized, with reference to our list of journal publications.

Dr. M. Rosenberg

2010-01-05T23:59:59.000Z

172

Measurement of the polarization of positive muons produced in high-energy antineutrino interactions  

Science Journals Connector (OSTI)

The question whether scalar-type interactions contribute to weak interactions at large momentum transfer has been investigated by a measurement of the longitudinal polarization of positive muons produced in charg...

M. Jonker; F. Udo; J. V. Allaby; U. Amaldi…

1983-01-01T23:59:59.000Z

173

Microsystems and Nanotechnology Group  

E-Print Network [OSTI]

Microsystems and Nanotechnology Group Microsystems and Nanotechnology Group 1 Microsystems and Nanotechnology Research Group The University of British Columbia Microsystems and Nanotechnology Research Group The University of British Columbia Annual Report ­ 2008 Microsystems and Nanotechnology Research Group 1 About

Pulfrey, David L.

174

Microsystems and Nanotechnology Group  

E-Print Network [OSTI]

Microsystems and Nanotechnology Group Microsystems and Nanotechnology Group 1 Microsystems and Nanotechnology Research Group The University of British Columbia Microsystems and Nanotechnology Research Group The University of British Columbia Annual Report ­ 2007 Microsystems and Nanotechnology Research Group 1 About

Pulfrey, David L.

175

Triggered single photon emitters based on stimulated parametric scattering in weakly nonlinear systems  

E-Print Network [OSTI]

We introduce a scheme of single photon emission based on four-wave mixing in a three mode system with weak Kerr-type nonlinearity. A highly populated lower energy mode results in strong stimulated scattering of particle pairs out of the central mode, which consequently limits the central mode occupation. Thus, the system can be reduced to a $\\chi^{(2)}$ nonlinear medium with greatly enhanced interaction constant. As a model setup we consider dipolaritons in semiconductor microcavities. Using the master equation approach we show strong antibunching under continuous wave pump, which largely exceeds the conventional blockade mechanism. Finally, using a pulsed excitation we demonstrate theoretically an on-demand single photon emitter in a weakly nonlinear system.

Kyriienko, Oleksandr

2014-01-01T23:59:59.000Z

176

Triggered single photon emitters based on stimulated parametric scattering in weakly nonlinear systems  

E-Print Network [OSTI]

We introduce a scheme of single photon emission based on four-wave mixing in a three mode system with weak Kerr-type nonlinearity. A highly populated lower energy mode results in strong stimulated scattering of particle pairs out of the central mode, which consequently limits the central mode occupation. Thus, the system can be reduced to a $\\chi^{(2)}$ nonlinear medium with greatly enhanced interaction constant. As a model setup we consider dipolaritons in semiconductor microcavities. Using the master equation approach we show strong antibunching under continuous wave pump, which largely exceeds the conventional blockade mechanism. Finally, using a pulsed excitation we demonstrate theoretically an on-demand single photon emitter in a weakly nonlinear system.

Oleksandr Kyriienko; Timothy C. H. Liew

2014-09-09T23:59:59.000Z

177

Microscopic Description of Entanglements in Polyethylene Networks and Melts: Strong, Weak, Pairwise, and Collective Attributes  

E-Print Network [OSTI]

We present atomistic molecular dynamics simulations of two Polyethylene systems where all entanglements are trapped: a perfect network, and a melt with grafted chain ends. We examine microscopically at what level topological constraints can be considered as a collective entanglement effect, as in tube model theories, or as certain pairwise uncrossability interactions, as in slip-link models. A pairwise parameter, which varies between these limiting cases, shows that, for the systems studied, the character of the entanglement environment is more pairwise than collective. We employ a novel methodology, which analyzes entanglement constraints into a complete set of pairwise interactions, similar to slip links. Entanglement confinement is assembled by a plethora of links, with a spectrum of confinement strengths, from strong to weak. The strength of interactions is quantified through a link `persistence', which is the fraction of time for which the links are active. By weighting links according to their strength,...

Anogiannakis, Stefanos D; Theodorou, Doros N

2012-01-01T23:59:59.000Z

178

Quantum Walk of Two Interacting Bosons  

E-Print Network [OSTI]

We study the effect of interactions on the bosonic two-particle quantum walk and its corresponding spatial correlations. The combined effect of interactions and Hanbury-Brown Twiss interference results in unique spatial correlations which depend on the strength of the interaction, but not on its sign. The results are explained in light of the two-particle spectrum and the physics of attractively and repulsively bound pairs. We experimentally measure the weak interaction limit of these effects in nonlinear photonic lattices. Finally, we discuss an experimental approach to observe the strong interaction limit using single atoms in optical lattices.

Yoav Lahini; Mor Verbin; Sebastian D. Huber; Yaron Bromberg; Rami Pugatch; Yaron Silberberg

2011-05-11T23:59:59.000Z

179

V819 TAU: A RARE WEAK-LINED T TAURI STAR WITH A WEAK INFRARED EXCESS  

SciTech Connect (OSTI)

We use Spitzer data to infer that the small infrared excess of V819 Tau, a weak-lined T Tauri star in Taurus, is real and not attributable to a 'companion' 10'' to the south. We do not confirm the mid-infrared excess in HBC 427 and V410 X-ray 3, which are also non-accreting T Tauri stars in the same region; instead, for the former object, the excess arises from a red companion 9'' to the east. A single-temperature blackbody fit to the continuum excess of V819 Tau implies a dust temperature of 143 K; however, a better fit is achieved when the weak 10 and 20 mum silicate emission features are also included. We infer a disk of sub-mum silicate grains between about 1 AU and several 100 AU with a constant surface density distribution. The mid-infrared excess of V819 Tau can be successfully modeled with dust composed mostly of small amorphous olivine grains at a temperature of 85 K, and most of the excess emission is optically thin. The disk could still be primordial, but gas-poor and therefore short-lived, or already at the debris disk stage, which would make it one of the youngest debris disk systems known.

Furlan, E. [Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 264-767, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Forrest, W. J.; Manoj, P.; Kim, K. H.; Watson, Dan M. [Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627 (United States); Sargent, B. A., E-mail: Elise.Furlan@jpl.nasa.go, E-mail: forrest@pas.rochester.ed, E-mail: manoj@pas.rochester.ed, E-mail: khkim@pas.rochester.ed, E-mail: dmw@pas.rochester.ed, E-mail: sargent@stsci.ed [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)

2009-12-01T23:59:59.000Z

180

Manuscript Version 6. Official copy "Mouse" in Berkshire Encyclopedia of Human-Computer Interaction, W.S. Bainbridge (ed). 2004 by Berkshire Publishing Group. http://www.berkshirepublishing.com/brw/BerkProd.asp?projID=29#  

E-Print Network [OSTI]

interface and many other innovations. There are various possible alternatives to the mouse, including touch is that for interacting with graphical user interfaces (GUI) on desktop computers, the mouse serves most users quite well two orthogonal optical encoders for two dimensional movements. Figure 2 shows the inside of a mouse

Zhai, Shumin

Note: This page contains sample records for the topic "group weak interactions" 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 THE ACCURACY OF WEAK-LENSING CLUSTER MASS RECONSTRUCTIONS  

SciTech Connect (OSTI)

We study the bias and scatter in mass measurements of galaxy clusters resulting from fitting a spherically symmetric Navarro, Frenk, and White model to the reduced tangential shear profile measured in weak-lensing (WL) observations. The reduced shear profiles are generated for {approx}10{sup 4} cluster-sized halos formed in a {Lambda}CDM cosmological N-body simulation of a 1 h{sup -1} Gpc box. In agreement with previous studies, we find that the scatter in the WL masses derived using this fitting method has irreducible contributions from the triaxial shapes of cluster-sized halos and uncorrelated large-scale matter projections along the line of sight. Additionally, we find that correlated large-scale structure within several virial radii of clusters contributes a smaller, but nevertheless significant, amount to the scatter. The intrinsic scatter due to these physical sources is {approx}20% for massive clusters and can be as high as {approx}30% for group-sized systems. For current, ground-based observations, however, the total scatter should be dominated by shape noise from the background galaxies used to measure the shear. Importantly, we find that WL mass measurements can have a small, {approx}5%-10%, but non-negligible amount of bias. Given that WL measurements of cluster masses are a powerful way to calibrate cluster mass-observable relations for precision cosmological constraints, we strongly emphasize that a robust calibration of the bias requires detailed simulations that include more observational effects than we consider here. Such a calibration exercise needs to be carried out for each specific WL mass estimation method, as the details of the method determine in part the expected scatter and bias. We present an iterative method for estimating mass M{sub 500c} that can eliminate the bias for analyses of ground-based data.

Becker, Matthew R. [Department of Physics, 5720 S. Ellis Avenue, University of Chicago, Chicago, IL 60637 (United States); Kravtsov, Andrey V. [Kavli Institute for Cosmological Physics, 5640 South Ellis Avenue, University of Chicago, Chicago, IL 60637 (United States)

2011-10-10T23:59:59.000Z

182

Nuclear Matter Incompressibility Effect on the Cross Section of Fusion Reactions with a weakly bound projectile  

E-Print Network [OSTI]

Fusion reactions with a weakly bound projectile are studied using the double-folding model along with a repulsive interaction modifying term. Using this modified potential, including nuclear matter incompressibility effects, the fusion reaction cross sections and suppression parameters are calculated for 9Be +209Bi,208Pb,29Si and 27Al reactions. The results show that applying these effects at energies near the Coulomb barrier improves the agreement between the calculated and experimental cross sections, and modifies the mean values of the suppression parameter.

Seyyedi, S A

2015-01-01T23:59:59.000Z

183

Nuclear Matter Incompressibility Effect on the Cross Section of Fusion Reactions with a weakly bound projectile  

E-Print Network [OSTI]

Fusion reactions with a weakly bound projectile are studied using the double-folding model along with a repulsive interaction modifying term. Using this modified potential, including nuclear matter incompressibility effects, the fusion reaction cross sections and suppression parameters are calculated for 9Be +209Bi,208Pb,29Si and 27Al reactions. The results show that applying these effects at energies near the Coulomb barrier improves the agreement between the calculated and experimental cross sections, and modifies the mean values of the suppression parameter.

S. A. Seyyedi; H. Golnarkar

2015-01-19T23:59:59.000Z

184

Fermionic-bosonic couplings in a weakly deformed odd-mass nucleus, 4193Nb  

Science Journals Connector (OSTI)

A comprehensive level scheme of Nb93 below 2 MeV has been constructed from information obtained with the Nb93(n,n??) and the Zr94(p,2n??)Nb93 reactions. Branching ratios, lifetimes, transition multipolarities, and spin assignments have been determined. From M1 and E2 strengths, fermionic-bosonic excitations of isoscalar and isovector characters have been identified from the weak couplings of the ?1g9/2?4092Zr and ?2p1/2-1?4294Mo configurations. A microscopic interpretation of such excitations is obtained from shell-model calculations, which use low-momentum effective interactions.

J. N. Orce; J. D. Holt; A. Linnemann; C. J. McKay; C. Fransen; J. Jolie; T. T. S. Kuo; S. R. Lesher; M. T. McEllistrem; N. Pietralla; N. Warr; V. Werner; S. W. Yates

2010-10-25T23:59:59.000Z

185

Interactive Jobs  

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

Interactive Jobs Interactive Jobs Interactive Jobs Interactive Batch Jobs The login nodes on Genepool should not be used for heavy interactive work. These login nodes are shared amoungst all Genepool users so heavy CPU or memory usage will affect other Genepool users. 10 nodes have been reserved on Genepool for high priority and interactive work. Each user can use up to 2 slots at a time in the high priority queue. Use the qlogin command to run jobs interactively. The example below shows how to request an interactive session on Genepool . genepool:$~> qlogin -l high.c This will put you directly onto a node where you can do interactive work. kmfagnan@genepool01:~$ qlogin -l high.c Your job 1459021 ("QLOGIN") has been submitted waiting for interactive job to be scheduled ......

186

Argonne Physics Division - Theory Group  

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

Special Day & Time: Special Day & Time: 10:30am Tues. 19 March 2013 Alessandro Lovato Argonne Leadership Computing Facility and Physics Division lovato@anl.gov Weak Response of Cold Symmetric Nuclear Matter at Three-Body Cluster Level 24 January 2013 Elmar Biernat Universidade Técnica de Lisboa, Portugal elmar.biernat@ist.utl.pt Meson properties from two different covariant approaches Special Day: Tues. 22 January 2013 Guillaume Hupin Lawrence Livermore National Lab hupin1@llnl.gov Continuum effects in nuclear structure and reactions Special Day & Time: 10:30am, Tues. 15 January 2013 Kyle Wendt Ohio State University wendt.31@osu.edu Non-Locality in the Similarity Renormalization Group Special Time: 10:30am 10 January 2013 Vojtech Krejcirik University of Maryland vkrejcir@umd.edu

187

T-705: Linux Kernel Weakness in Sequence Number Generation Facilitates  

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

05: Linux Kernel Weakness in Sequence Number Generation 05: Linux Kernel Weakness in Sequence Number Generation Facilitates Packet Injection Attacks T-705: Linux Kernel Weakness in Sequence Number Generation Facilitates Packet Injection Attacks August 30, 2011 - 3:46am Addthis PROBLEM: A remote user can conduct packet injection attacks. PLATFORM: Linux Kernel ABSTRACT: Linux Kernel Weakness in Sequence Number Generation Facilitates Packet Injection Attacks. reference LINKS: SecurityTracker Alert ID: 1025977 CVE-2011-3188 (under review) The Linux Kernel Archives IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in the Linux Kernel. A remote user can conduct packet injection attacks. The kernel's sequence number generation function uses partial MD4 with 24-bits unguessable. A remote user may be able to brute-force guess a valid sequence number to inject a packet into a

188

Momentum broadening in weakly coupled quark-gluon plasma  

E-Print Network [OSTI]

We calculate the probability distribution P(k [subscript ?]) for the momentum perpendicular to its original direction of motion that an energetic quark or gluon picks up as it propagates through weakly coupled quark-gluon ...

D'Eramo, F.

189

Inversion for elastic parameters in weakly anisotropic media  

Science Journals Connector (OSTI)

......propagation in inhomogeneous weakly anisotropic elastic media, J. geophys...2001. Ray tracing in anisotropic media with singularities...Measured anisotropy in Pierre shale, Geophys. Prospect., 31...approximation of ray theory for anisotropic media, Geophys. J. Int......

Xuyao Zheng

2004-12-01T23:59:59.000Z

190

Earth's Core Reveals an Inner Weakness | Advanced Photon Source  

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

their results to core conditions and found that the strength of iron deep within the Earth is lower than previously thought. This weakness may explain how the crystal structure...

191

Imprints of dynamical dark energy on weak-lensing measurements  

Science Journals Connector (OSTI)

......Large Synoptic Survey Telescope...g. Joint Dark Energy Mission (JDEM...galaxy redshift surveys and the abundance...spectrum of dark energy P (k), as...to dynamical dark energy is potentially...weak-lensing surveys. The error......

Sirichai Chongchitnan; Lindsay King

2010-09-21T23:59:59.000Z

192

Environmental Metabolomics:? A SWOT Analysis (Strengths, Weaknesses, Opportunities, and Threats)  

Science Journals Connector (OSTI)

Environmental Metabolomics:? A SWOT Analysis (Strengths, Weaknesses, Opportunities, and Threats) ... An overall goal of environmental metabolomics is to understand what is metabolomically “normal” or adaptive and what constitutes a threat to human health and the environment. ...

Marion G. Miller

2007-01-04T23:59:59.000Z

193

Ultra-weak sector, Higgs boson mass, and the dilaton  

SciTech Connect (OSTI)

The Higgs boson mass may arise from a portal coupling to a singlet field $\\sigma$ which has a very large VEV $f \\gg m_\\text{Higgs}$. This requires a sector of "ultra-weak" couplings $\\zeta_i$, where $\\zeta_i \\lesssim m_\\text{Higgs}^2 / f^2$. Ultra-weak couplings are technically naturally small due to a custodial shift symmetry of $\\sigma$ in the $\\zeta_i \\rightarrow 0$ limit. The singlet field $\\sigma$ has properties similar to a pseudo-dilaton. We engineer explicit breaking of scale invariance in the ultra-weak sector via a Coleman-Weinberg potential, which requires hierarchies amongst the ultra-weak couplings.

Allison, Kyle [University of Oxford; Hill, Christopher T. [FNAL; Ross, Graham G. [University of Oxford

2014-11-01T23:59:59.000Z

194

The Hadley Circulation and the Weak Temperature Gradient Approximation  

Science Journals Connector (OSTI)

The weak temperature gradient (WTG) approximation is applied to simple shallow-water models of the Hadley circulation. While it is difficult to formally justify the use of the WTG approximation for this problem, the derived WTG solutions are ...

L. M. Polvani; A. H. Sobel

2002-05-01T23:59:59.000Z

195

Proton's Weak Charge Determined for First Time | Jefferson Lab  

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

force is one of the four fundamental forces in our universe, along with gravity, electromagnetism and the strong force. Although the weak force acts only on the sub-atomic level,...

196

TEC Working Group Topic Groups Archives Consolidated Grant Topic Group |  

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

Consolidated Grant Topic Consolidated Grant Topic Group TEC Working Group Topic Groups Archives Consolidated Grant Topic Group The Consolidated Grant Topic Group arose from recommendations provided by the TEC and other external parties to the DOE Senior Executive Transportation Forum in July 1998. It was proposed that the consolidation of multiple funding streams from numerous DOE sources into a single grant would provide a more equitable and efficient means of assistance to States and Tribes affected by DOE nuclear material shipments. The group serves as an important vehicle for DOE senior managers to assess and incorporate stakeholder input into the development of a consolidated funding vehicle for transportation activities, should DOE implement such a program. Some of the major issues under consideration by the Consolidated Grant

197

TEC Working Group Background | Department of Energy  

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

TEC Working Group Background TEC Working Group Background TEC Working Group Background Through the TEC/WG, DOE interacted with representatives of organizations at the state, tribal, and local levels to obtain input for program needs assessment, development and management, and to enhance their capability to carry out transportation emergency preparedness and safety activities specifically related to radioactive materials shipments. TEC membership included representatives from national, state, tribal and local government organizations, labor, industry and professional groups. Members meet semiannually to participate in plenary sessions, breakout work sessions, and in more specialized Topic Groups. To learn more about the history and background of TEC, please see the following documents:

198

Periodic Hartree-Fock study of a weakly bonded layer structure: Brucite Mg(OH)2  

Science Journals Connector (OSTI)

The layered mineral brucite Mg(OH)2 is investigated theoretically using an ab initio all-electron linear combination of atomic orbitals Hartree-Fock (HF) approximation. At the HF level, the interlayer interaction is weak and the interlayer distance is larger than the experimental one. Bonding is discussed on the basis of density of states and charge-density maps. No hydrogen bond is characterized. A posteriori correction of the energy for the correlation error is performed by use of the functional approach. The three semilocal functional formulas used yield similar results. This brings in extra interlayer bonding interaction, and yields a calculated geometry in agreement with experiments. The analysis of the interlayer bondings shows that it is mainly of dispersion type, and that the used functionals account for dispersion, in particular at short interatomic distances.

Philippe D’Arco; Mauro Causà; Carla Roetti; Bernard Silvi

1993-02-15T23:59:59.000Z

199

Electromagnetic and neutral-weak response functions of 4He and 12C  

E-Print Network [OSTI]

Ab initio calculations of the quasi-elastic electromagnetic and neutral-weak response functions of 4He and 12C are carried out for the first time. They are based on a realistic approach to nuclear dynamics, in which the strong interactions are described by two- and three-nucleon potentials and the electroweak interactions with external fields include one- and two-body terms. The Green's function Monte Carlo method is used to calculate directly the Laplace transforms of the response functions, and maximum-entropy techniques are employed to invert the resulting imaginary-time correlation functions with associated statistical errors. The theoretical results, confirmed by experiment in the electromagnetic case, show that two-body currents generate excess transverse strength from threshold to the quasi-elastic to the dip region and beyond. These findings challenge the conventional picture of quasi-elastic inclusive scattering as being largely dominated by single-nucleon knockout processes.

Lovato, A; Carlson, J; Pieper, Steven C; Schiavilla, R

2015-01-01T23:59:59.000Z

200

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

Note: This page contains sample records for the topic "group weak interactions" 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

MAGNIFICATION BY GALAXY GROUP DARK MATTER HALOS  

SciTech Connect (OSTI)

We report on the detection of gravitational lensing magnification by a population of galaxy groups, at a significance level of 4.9{sigma}. Using X-ray-selected groups in the COSMOS 1.64 deg{sup 2} field, and high-redshift Lyman break galaxies as sources, we measure a lensing-induced angular cross-correlation between the samples. After satisfying consistency checks that demonstrate we have indeed detected a magnification signal, and are not suffering from contamination by physical overlap of samples, we proceed to implement an optimally weighted cross-correlation function to further boost the signal to noise of the measurement. Interpreting this optimally weighted measurement allows us to study properties of the lensing groups. We model the full distribution of group masses using a composite-halo approach, considering both the singular isothermal sphere and Navarro-Frenk-White profiles, and find our best-fit values to be consistent with those recovered using the weak-lensing shear technique. We argue that future weak-lensing studies will need to incorporate magnification along with shear, both to reduce residual systematics and to make full use of all available source information, in an effort to maximize scientific yield of the observations.

Ford, Jes; Hildebrandt, Hendrik; Van Waerbeke, Ludovic [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Leauthaud, Alexie; Tanaka, Masayuki [Institute for the Physics and Mathematics of the Universe, University of Tokyo, Chiba 277-8582 (Japan); Capak, Peter [NASA Spitzer Science Center, California Institute of Technology, 220-6 Caltech, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Finoguenov, Alexis [Max-Planck-Institut fuer Extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching (Germany); George, Matthew R. [Department of Astronomy, University of California, Berkeley, CA 94720 (United States); Rhodes, Jason [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)

2012-08-01T23:59:59.000Z

202

GRAYSTONE GROUP ADVERTISING  

E-Print Network [OSTI]

and GRAYSTONE GROUP ADVERTISING Partnership The University Central Florida has partnered with the Graystone Group for the purposes of facilitating recruitment advertising services. Benefits of partnering evaluations. Placing Recruitment Advertising: · Graystone Group is available to support all your recruitment

Wu, Shin-Tson

203

SPECTRAL THEORY FOR A MATHEMATICAL MODEL OF THE WEAK INTERACTION: THE DECAY OF THE  

E-Print Network [OSTI]

energy cutoff nor infrared regularization are assumed. 1. Introduction We study a mathematical model and antineutrino ¯e, the muons µ- and µ+ together with the associated neutrino µ and antineutrino ¯µ and the tau this assumption, the total Hamiltonian, which is the sum of the free energy of the particles (see (2.6)) and of

204

Precision Studies of Hadronic and Electro-Weak Interactions for Collider Physics. Final Report  

SciTech Connect (OSTI)

This project was directed toward developing precision computational tools for proton collisions at the Large Hadron Collider, focusing primarily on electroweak boson production and electroweak radiative corrections. The programs developed under this project carried the name HERWIRI, for High Energy Radiation With Infra-Red Improvements, and are the first steps in an ongoing program to develop a set of hadronic event generators based on combined QCD and QED exponentiation. HERWIRI1 applied these improvements to the hadronic shower, while HERWIRI2 will apply the electroweak corrections from the program KKMC developed for electron-positron scattering to a hadronic event generator, including exponentiated initial and final state radiation together with first-order electroweak corrections to the hard process. Some progress was also made on developing differential reduction techniques for hypergeometric functions, for application to the computation of Feynman diagrams.

Yost, Scott A [The Citadel, Charleston, SC (United States)] [The Citadel, Charleston, SC (United States)

2014-04-02T23:59:59.000Z

205

Detectability of Weakly Interacting Massive Particles in the Sagittarius Dwarf Tidal Stream  

E-Print Network [OSTI]

Tidal streams of the Sagittarius dwarf spheroidal galaxy (Sgr) may be showering dark matter onto the solar system and contributing $\\sim $(0.3--25)% of the local density of our Galactic Halo. If dark matter consists of WIMPs, the extra contribution from the stream gives rise to a step-like feature in the energy recoil spectrum in direct dark matter detection. For our best estimate of stream velocity (300 km/sec) and direction (the plane containing the Sgr dwarf and its debris), the count rate is maximum on June 28 and minimum on December 27 (for most recoil energies), and the location of the step oscillates yearly with a phase opposite to that of the count rate. The energy of the step should be above the threshold of the DAMA/NaI detector. Thus the WIMP signal from the Sgr stream may already be present in the DAMA/NaI data (at a level up to 100$\\sigma$), and may be useful to help establish the interpretation of the DAMA annual modulation as due to WIMPs. In addition, the WIMP parameters that best fit the data...

Freese, K; Newberg, H J; Freese, Katherine; Gondolo, Paolo; Newberg, Heidi Jo

2003-01-01T23:59:59.000Z

206

Non-universality in Ising models with four spin interaction.  

E-Print Network [OSTI]

Non-universality in Ising models with four spin interaction. V. Mastropietro Dipartimento di consider two bidimensional classical Ising mod- els, coupled by a weak interaction bilinear in the energy is determined by critical indices which are continuous functions of the coupling. Key words Coupled Ising models

207

Malaria Researchers Find Weakness in Global Killer | Department of Energy  

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

Malaria Researchers Find Weakness in Global Killer Malaria Researchers Find Weakness in Global Killer Malaria Researchers Find Weakness in Global Killer February 1, 2012 - 9:16am Addthis The protozoan Plasmodium falciparum gliding through a cell in the gut of a mosquito, its primary host. Although five different species of Plasmodium can cause malaria, Plasmodium falciparum causes the most severe disease. | Photo courtesy of Wikipedia Commons. The protozoan Plasmodium falciparum gliding through a cell in the gut of a mosquito, its primary host. Although five different species of Plasmodium can cause malaria, Plasmodium falciparum causes the most severe disease. | Photo courtesy of Wikipedia Commons. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science

208

Recovering information of tunneling spectrum from Weakly Isolated Horizon  

E-Print Network [OSTI]

In this paper we investigate the properties of tunneling spectrum from weakly isolated horizon(WIH). We find that there are correlations among Hawking radiations from weakly isolated horizon, the information can be carried out in terms of correlations between sequential emissions, and the radiation is an entropy conservation process. We generalize Refs.[11-13]' results to a more general spacetime. Through revisiting the calculation of tunneling spectrum of weakly isolated horizon, we find that Ref.[12]'s requirement that radiating particles have the same angular momenta of unit mass as that of black hole is not needed, and the energy and angular momenta of emitting particles are very arbitrary which should be restricted only by keeping the cosmic censorship of black hole.

Ge-Rui Chen; Yong-Chang Huang

2014-06-02T23:59:59.000Z

209

Student Groups Student Group Description Short Description  

E-Print Network [OSTI]

Student Groups Student Group Description Short Description AHR Scholar-Architecture Scholar ART Honors - Architecture Honors H04 Honors - Allied Medical Prof Honors H05 Honors - Arts & Sciences Honors H14 Honors - Envir&Natural Resources Honors H15 Honors - Food, Agr, & Envir Sci Honors H16 Honors

210

Breakdown of a Space Charge Limited Regime of a Sheath in a Weakly Collisional Plasma Bounded by Walls with Secondary Electron Emission  

E-Print Network [OSTI]

, Canada 2 Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USABreakdown of a Space Charge Limited Regime of a Sheath in a Weakly Collisional Plasma Bounded (Received 21 May 2009; published 1 October 2009) A new regime of plasma-wall interaction is identified

Kaganovich, Igor

211

Physical component analysis of galaxy cluster weak gravitational lensing data  

Science Journals Connector (OSTI)

......Optimization schemes for locating the best-fitting point...by weak-lensing data sets: we find the evidence...sample corresponds to a set of haloes that provide...a consequence of the domination of clusters by a single...methods: the natural basis set of elliptical NFW-profile......

Phil Marshall

2006-11-01T23:59:59.000Z

212

Weak field limit of Reissner-Nordström black hole lensing  

Science Journals Connector (OSTI)

We study gravitational lensing by a Reissner-Nordström black hole in the weak field limit. We obtain the basic equations for the deflection angle and time delay and find analytical expressions for the positions and amplifications of the primary and secondary images. Because of a net positive charge, the separation between images increases, but no change in the total magnification occurs.

Mauro Sereno

2004-01-13T23:59:59.000Z

213

Early Results from the Q{sub weak} Experiment  

SciTech Connect (OSTI)

A subset of results from the recently completed Jefferson Lab Q{sub weak} experiment are reported. This experiment, sensitive to physics beyond the Standard Model, exploits the small parity-violating asymmetry in elastic {vector e}p scattering to provide the first determination of the protons weak charge Q{sub w}{sup p}. The experiment employed a 180 {micro}A longitudinally polarized 1.16 GeV electron beam on a 35 cm long liquid hydrogen target. Scattered electrons corresponding to Q{sup 2} of 0.025 GeV{sup 2} were detected in eight Cerenkov detectors arrayed symmetrically around the beam axis. The goals of the experiment were to provide a measure of Q{sub w}{sup p} to 4.2 percent (combined statistical and systematic error), which implies a measure of sin2(thetaw) at the level of 0.3 percent, and to help constrain the vector weak quark charges C{sub 1u} and C{sub 1d}. The experimental method is described, with particular focus on the challenges associated with the worlds highest power LH{sub 2} target. The new constraints on C{sub 1u} and C{sub 1d} provided by the subset of the experiments data analyzed to date will also be shown, together with the extracted weak charge of the neutron.

Androic, D.; Armstrong, D.S.; Asaturyan, A.; Averett, T.; Balewski, J.; Beaufait, J.; Beminiwattha, R.S.; Benesch, J.; Benmokhtar, F.; Birchall, J.; Carlini, R.D.; Cates, G.D.; Cornejo, J.C.; Covrig, S.; Dalton, M.M.; Davis, C.A.; Deconinck, W.; Diefenbach, J.; Dowd, J.F.; Dunne, J.A.; Dutta, D.; Duvall, W.S.; Elaasar, M.; Falk, W.R.; Finn, J.M.; Forest, T.; Gaskel, D.; Gericke, M.T.W.; Grames, J.; Gray, V.M.; Grimm, K.; Guo, F.; Hoskins, J.R.; Johnston, K.; Jones, D.; Jones, M.; Jones, R.; Kargiantoulakis, M.; King, P.M.; Korkmaz, E.; Kowalski, S.; Leacock, J.; Leckey, J.; Lee, A.R.; Lee, J.H.; Lee, L.; MacEwan, S.; Mack, D.; Magee, J.A.; Mahurin, R.; Mammei, J.; Martin, J.; McHugh, M.J.; Meekins, D.; Mei, J.; Michaels, R.; Micherdzinska, A.; Mkrtchyan, A.; Mkrtchyan, H.; Morgan, N.; Myers, K.E.; Narayan, A.; Ndukum, L.Z.; Nelyubin, V.; W T H, Nuruzzaman; Oers, van; Opper, A.K.; Page, S.A.; Pan, J.; Paschke, K.; Phillips, S.K.; Pitt, M.L.; Poelker, M.; Rajotte, J.F.; Ramsay, W.D.; Roche, J.; Sawatzky, B.; Seva, T.; Shabestari, M.H.; Silwal, R.; Simicevic, N.; Smith, G.R.; Solvignon, P.; Spayde, D.T.; Subedi, A.; Subedi, R.; Suleiman, R.; Tadevosyan, V.; Tobias, W.A.; Tvaskis, V.; Waidyawansa, B.; Wang, P.; Wells, S.P.; Wood, S.A.; Yang, S.; Young, R.D.; Zhamkochyan, S.

2014-03-01T23:59:59.000Z

214

Computations of Hypersonic Weakly Ionised Flows using a Relaxation Scheme  

E-Print Network [OSTI]

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

Chalons, Christophe

215

Inversion of borehole weak motion records observed in Istanbul (Turkey)  

Science Journals Connector (OSTI)

......sets, might be large. This indicates...the inversion of borehole weak and strong...2005 December, a drilling program consisting...the 140-m-deep borehole, based on the encountered...applicable also to borehole sites where other...velocities (with a large change of impedance......

S. Parolai; R. Wang; D. Bindi

2012-02-01T23:59:59.000Z

216

Hopfield Neural Network deconvolution for weak lensing measurement  

E-Print Network [OSTI]

Weak gravitational lensing has the potential to place tight constraints on the equation of the state of dark energy. However, this will only be possible if shear measurement methods can reach the required level of accuracy. We present a new method to measure the ellipticity of galaxies used in weak lensing surveys. The method makes use of direct deconvolution of the data by the total Point Spread Function (PSF). We adopt a linear algebra formalism that represents the PSF as a Toeplitz matrix. This allows us to solve the convolution equation by applying the Hopfield Neural Network iterative scheme. The ellipticity of galaxies in the deconvolved images are then measured using second order moments of the autocorrelation function of the images. To our knowledge, it is the first time full image deconvolution is used to measure weak lensing shear. We apply our method to the simulated weak lensing data proposed in the GREAT10 challenge and obtain a quality factor of Q=87. This result is obtained after applying image...

Nurbaeva, Guldariya; Courbin, Frederic; Meylan, Georges

2014-01-01T23:59:59.000Z

217

Non-Autonomous Systems: Asymptotic Behaviour and Weak Invariance Principles *  

E-Print Network [OSTI]

Non-Autonomous Systems: Asymptotic Behaviour and Weak Invariance Principles * H Logemann & E P Ryan@maths.bath.ac.uk Results pertaining to asymptotic behaviour of solutions of non-autonomous ordinary di#11;erential asymptotically autonomous systems and adaptively controlled systems are highlighted. Key Words: adaptive control

Bath, University of

218

TRANSMISSION ELECTRON MICROSCOPY OF WEAKLY DEFORMED ALKALI HALIDE CRYSTALS  

E-Print Network [OSTI]

377 TRANSMISSION ELECTRON MICROSCOPY OF WEAKLY DEFORMED ALKALI HALIDE CRYSTALS H. STRUNK Max'importance croissante du durcissement de la solution solide. Abstract. 2014 Transmission electron microscopy (TEM Abstracts 7j66 - 7 I' 1. Introduction. - It is only some years ago that transmission electron microscopy

Boyer, Edmond

219

WEAK SUBINTEGRALITY AND INVERTIBLE MODULES IN GRADED RINGS  

E-Print Network [OSTI]

WEAK SUBINTEGRALITY AND INVERTIBLE MODULES IN GRADED RINGSB=A : B=A ! I (A?, B?). Here A? is the divided power algebra associated with A, which is the ring having, then the homomorphism iB=A : B=A ! I (A?, B?) is an isomorphism. A key new observation used in the proof

Roberts, Leslie

220

Periodic Orbits in Triaxial Galaxies with Weak Cusps  

E-Print Network [OSTI]

The orbital structure of triaxial models with weak central density cusps, $\\rho\\propto r^{-\\gamma}, gamma fish boxlets in the $x-z$ (long axis-short axis) plane are stable over a wide range of model parameters. The boxlets in the $x-y$ and $y-z$ planes are generally vertically unstable.

Tema Fridman; David Merritt

1997-05-19T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

Open Wilson lines and group theory of  

Science Journals Connector (OSTI)

The correlation functions of open Wilson line operators in two-dimensional Yang-Mills theory on the noncommutative torus are computed exactly. The correlators are expressed in two equivalent forms. An instanton expansion involves only topological numbers of Heisenberg modules and enables extraction of the weak-coupling limit of the gauge theory. A dual algebraic expansion involves only group theoretic quantities, winding numbers and translational zero modes, and enables analysis of the strong-coupling limit of the gauge theory and the high-momentum behaviour of open Wilson lines. The dual expressions can be interpreted physically as exact sums over contributions from virtual electric dipole quanta.

Lori D. Paniak; Richard J. Szabo

2003-01-01T23:59:59.000Z

222

Renormalization group aspects of graphene  

E-Print Network [OSTI]

Graphene is a two dimensional crystal of carbon atoms with fascinating electronic and morphological properties. The low energy excitations of the neutral, clean system are described by a massless Dirac Hamiltonian in (2+1) dimensions which also captures the main electronic and transport properties. A renormalization group analysis sheds light on the success of the free model: due to the special form of the Fermi surface which reduces to two single points in momentum space, short range interactions are irrelevant and only gauge interactions like long range Coulomb or effective disorder can play a role in the low energy physics. We review these features and discuss briefly other aspects related to disorder and to the bilayer material along the same lines.

Maria A. H. Vozmediano

2010-10-25T23:59:59.000Z

223

Copeia, 2005(1), pp. 4860 Nesting and Paternal Care in the Weakly Electric Fish  

E-Print Network [OSTI]

(Hypopomidae) in Surinam but no parental care was implicated. Parental care is unknown in other weakly

Hopkins, Carl D.

224

The Yi Liu Group - Home  

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

Research Research Group Members News Publications Contacts Home Research Group Members News Publications Contacts - A supramolecular approach to better n-type organic field effect transistors. Soon in Adv. Mater. - Electron donors, acceptors, and host-guest complexes enable supramolecular networks in action. See the trio publications on J. Am. Chem. Soc., Polym. Chem., and Chem. Eur. J. - Encaged! Not one, not two, but three. Three-fold clipping leads to triply threaded interlocked structures. Soon in Angew. Chem. Int. Ed. - Strongly interacting C3-symmetric donor-acceptor pairs made its way to Chem. Sci. - Check out our recent report on organic semi- conductors and molecular switches at Appl. Mat. Inter. and Agnew. Chem. Int. Ed. - Advances in efficient bio- orthogonal labeling - soon in Agnew. Chem.

225

ELEMENTARY PARTICLE INTERACTIONS  

SciTech Connect (OSTI)

The High-Energy Elementary Particle Interactions group at UT during the last three years worked on the following directions and projects: Collider-based Particle Physics; Neutrino Physics, particularly participation in “NO?A”, “Double Chooz”, and “KamLAND” neutrino experiments; and Theory, including Scattering amplitudes, Quark-gluon plasma; Holographic cosmology; Holographic superconductors; Charge density waves; Striped superconductors; and Holographic FFLO states.

EFREMENKO, YURI; HANDLER, THOMAS; KAMYSHKOV, YURI; SIOPSIS, GEORGE; SPANIER, STEFAN

2013-07-30T23:59:59.000Z

226

Positron impact excitations of hydrogen atom embedded in weakly coupled plasmas: Formation of Rydberg atoms  

SciTech Connect (OSTI)

Formation of Rydberg atoms due to 1s?nlm excitations of hydrogen, for arbitrary n, l, m, by positron impact in weakly coupled plasma has been investigated using a distorted-wave theory in the momentum space. The interactions among the charged particles in the plasma have been represented by Debye-Huckel potentials. Making use of a simple variationally determined wave function for the hydrogen atom, it has been possible to obtain the distorted-wave scattering amplitude in a closed analytical form. A detailed study has been made on the effects of plasma screening on the differential and total cross sections in the energy range 20–300?eV of incident positron. For the unscreened case, our results agree nicely with some of the most accurate results available in the literature. To the best of our knowledge, such a study on the differential and total cross sections for 1s?nlm inelastic positron-hydrogen collisions for arbitrary n, l, m in weakly coupled plasmas is the first reported in the literature.

Rej, Pramit; Ghoshal, Arijit, E-mail: aghoshal@math.buruniv.ac.in [Department of Mathematics, Burdwan University, Golapbag, Burdwan 713 104, West Bengal (India)

2014-09-15T23:59:59.000Z

227

Pending Jobs by Group  

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

Pending Jobs by Group Pending Jobs by Group Daily Graph: Weekly Graph: Monthly Graph: Yearly Graph: 2 Year Graph: Last edited: 2011-04-05 14:00:14...

228

Long Term by Group  

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

Running Jobs by Group Running Jobs by Group Daily Graph: Weekly Graph: Monthly Graph: Yearly Graph: 2 Year Graph: Last edited: 2011-04-05 13:59:48...

229

HASQARD Focus Group  

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

Group to introduce themselves and their role in the Focus Group to Jeff. III. The Action Tracking matrix was discussed. The following updates were provided: a. The process for...

230

Neutrino interactions in neutron matter  

E-Print Network [OSTI]

Neutrino flow is the dominant mechanism of energy transfer in the latest stages of supernovae explosions and in compact stars. The Standard Model of particle physics and accelerator data, provide a satisfactory description of neutrino physics in vacuum up to TeV scale. Nevertheless modeling the dynamics of neutrino interaction in the nuclear environment involves severe difficulties. This thesis in mainly aimed at obtaining the weak response of infinite matter, using both the Correlated Basis Function theory and Landau Theory of Fermi liquid to take into account properly nucleon-nucleon hard core potential and long range correlation (quasi-particle, collective modes, ecc.)

Cipollone, Andrea

2012-01-01T23:59:59.000Z

231

Neutrino interactions in neutron matter  

E-Print Network [OSTI]

Neutrino flow is the dominant mechanism of energy transfer in the latest stages of supernovae explosions and in compact stars. The Standard Model of particle physics and accelerator data, provide a satisfactory description of neutrino physics in vacuum up to TeV scale. Nevertheless modeling the dynamics of neutrino interaction in the nuclear environment involves severe difficulties. This thesis in mainly aimed at obtaining the weak response of infinite matter, using both the Correlated Basis Function theory and Landau Theory of Fermi liquid to take into account properly nucleon-nucleon hard core potential and long range correlation (quasi-particle, collective modes, ecc.)

Andrea Cipollone

2012-12-20T23:59:59.000Z

232

Interagency Advanced Power Group, Solar Working Group: Meeting minutes  

SciTech Connect (OSTI)

This report is the minutes of the Solar Working group. The meeting was prompted by the Steering Group`s desire to resolve issues the Solar Working Group.

Not Available

1993-10-14T23:59:59.000Z

233

Hydrogen Analysis Group  

SciTech Connect (OSTI)

NREL factsheet that describes the general activites of the Hydrogen Analysis Group within NREL's Hydrogen Technologies and Systems Center.

Not Available

2008-03-01T23:59:59.000Z

234

Interagency Sustainability Working Group  

Broader source: Energy.gov [DOE]

The Interagency Sustainability Working Group (ISWG) is the coordinating body for sustainable buildings in the federal government.

235

J. Phys. II FYance 7 (1997) 1111-1121 AUGUST 1997, PAGE 1111 Forces between Surfaces with Weakly End-Adsorbed Polylners  

E-Print Network [OSTI]

End-Adsorbed Polylners J-I- Martin (~ ), Z.-G. Wang (~,*), D. Zuckerman (~), R. Bruinsma (~) and P each having one weakly adsorbing end-group. We show that this system exhibits both repulsive is within a range of order the end-to-end distance of the end-adsorbed polymer, repulsion arises

Paris-Sud XI, Université de

236

Working Group 7 Summary  

SciTech Connect (OSTI)

The primary subject of working group 7 at the 2012 Advanced Accelerator Concepts Workshop was muon accelerators for a muon collider or neutrino factory. Additionally, this working group included topics that did not fit well into other working groups. Two subjects were discussed by more than one speaker: lattices to create a perfectly integrable nonlinear lattice, and a Penning trap to create antihydrogen.

Nagaitsev S.; Berg J.

2012-06-10T23:59:59.000Z

237

New weakly-coupled forces hidden in low-energy QCD  

E-Print Network [OSTI]

Is it possible to detect a new weakly-coupled force at the QCD scale that interacts primarily with quarks? This work investigates experimental signatures of a new MeV - GeV gauge boson that couples to baryon number, with attention to the 100 MeV - GeV mass range that is the regime of nonperturbative QCD. Such a state can be searched for in rare radiative decays of light mesons ($\\eta, \\eta^\\prime, \\phi, \\omega$) as a $\\pi^0 \\gamma$ resonance, which is its leading decay mode from 140 - 620 MeV. This is a new discovery window for forces beyond the Standard Model that is not covered by existing dark photon searches.

Sean Tulin

2014-04-16T23:59:59.000Z

238

New weakly-coupled forces hidden in low-energy QCD  

E-Print Network [OSTI]

Is it possible to detect a new weakly-coupled force at the QCD scale that interacts primarily with quarks? This work investigates experimental signatures of a new MeV - GeV gauge boson that couples to baryon number, with attention to the 100 MeV - GeV mass range that is the regime of nonperturbative QCD. Such a state can be searched for in rare radiative decays of light mesons ($\\eta, \\eta^\\prime, \\phi, \\omega$) as a $\\pi^0 \\gamma$ resonance, which is its leading decay mode from 140 - 620 MeV. This is a new discovery window for forces beyond the Standard Model that is not covered by existing dark photon searches.

Tulin, Sean

2014-01-01T23:59:59.000Z

239

Baryon masses in the three-state Potts field theory in a weak magnetic field  

E-Print Network [OSTI]

The 3-state Potts field theory describes the scaling limit of the 3-state Potts model on the two-dimensional lattice near its continuous phase transition point. In the presence of thermal and magnetic field perturbations, the 3-state Potts field theory in the ordered phase exhibits confinement of kinks, which allows both mesons and baryons. We calculate the masses of light baryons in this model in the weak confinement regime in leading order of the small magnetic field. In leading order of perturbation theory, the light baryons can be viewed as bound states of three quantum particles - the kinks, which move on a line and interact via a linear potential. We determine the masses of the lightest baryons by numerical solution of the associated non-relativistic one-dimensional quantum three-body problem.

S. B. Rutkevich

2014-08-08T23:59:59.000Z

240

The Eightfold Way: A Theory of Strong Interaction Symmetry  

DOE R&D Accomplishments [OSTI]

A new model of the higher symmetry of elementary particles is introduced ln which the eight known baryons are treated as a supermultiplet, degenerate in the limit of unitary symmetry but split into isotopic spin multiplets by a symmetry-breaking term. The symmetry violation is ascribed phenomenologically to the mass differences. The baryons correspond to an eight-dimensional irreducible representation of the unitary group. The pion and K meson fit into a similar set of eight particles along with a predicted pseudoscalar meson X {sup o} having I = 0. A ninth vector meson coupled to the baryon current can be accommodated naturally in the scheme. It is predicted that the eight baryons should all have the same spin and parity and that pseudoscalar and vector mesons should form octets with possible additional singlets. The mathematics of the unitary group is described by considering three fictitious leptons, nu , e {sup -}, and mu {sup -}, which may throw light on the structure of weak interactions. (D. L.C.)

Gell-Mann, M.

1961-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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241

Grouped exposed metal heaters  

DOE Patents [OSTI]

A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coupled below the surface of the formation. The openings include at least partially uncased wellbores in a hydrocarbon layer of the formation. The groups are electrically configured such that current flow through the formation between at least two groups is inhibited. The heaters are configured to provide heat to the formation.

Vinegar, Harold J. (Bellaire, TX); Coit, William George (Bellaire, TX); Griffin, Peter Terry (Brixham, GB); Hamilton, Paul Taylor (Houston, TX); Hsu, Chia-Fu (Granada Hills, CA); Mason, Stanley Leroy (Allen, TX); Samuel, Allan James (Kular Lumpar, MY); Watkins, Ronnie Wade (Cypress, TX)

2010-11-09T23:59:59.000Z

242

Sensitivity studies for the weak r process: neutron capture rates  

SciTech Connect (OSTI)

Rapid neutron capture nucleosynthesis involves thousands of nuclear species far from stability, whose nuclear properties need to be understood in order to accurately predict nucleosynthetic outcomes. Recently sensitivity studies have provided a deeper understanding of how the r process proceeds and have identified pieces of nuclear data of interest for further experimental or theoretical study. A key result of these studies has been to point out the importance of individual neutron capture rates in setting the final r-process abundance pattern for a ‘main’ (A ? 130 peak and above) r process. Here we examine neutron capture in the context of a ‘weak’ r process that forms primarily the A ? 80 r-process abundance peak. We identify the astrophysical conditions required to produce this peak region through weak r-processing and point out the neutron capture rates that most strongly influence the final abundance pattern.

Surman, R., E-mail: surmanr@union.edu [Department of Physics and Astronomy, Union College, Schenectady, NY 12308 (United States); Mumpower, M. [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)] [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Sinclair, R.; Jones, K. L. [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States)] [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States); Hix, W. R. [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States) [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States); Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); McLaughlin, G. C. [Department of Physics, North Carolina State University, Raleigh, NC 27695 (United States)] [Department of Physics, North Carolina State University, Raleigh, NC 27695 (United States)

2014-04-15T23:59:59.000Z

243

Homotopy Theory of Strong and Weak Topological Insulators  

E-Print Network [OSTI]

We use homotopy theory to extend the notion of strong and weak topological insulators to the non-stable regime (low numbers of occupied/empty energy bands). We show that for strong topological insulators in d spatial dimensions to be "truly d-dimensional", i.e. not realizable by stacking lower-dimensional insulators, a more restrictive definition of "strong" is required. However, this does not exclude weak topological insulators from being "truly d-dimensional", which we demonstrate by an example. Additionally, we prove some useful technical results, including the homotopy theoretic derivation of the factorization of invariants over the torus into invariants over spheres in the stable regime, as well as the rigorous justification of replacing $T^d$ by $S^d$ and $T^{d_k}\\times S^{d_x}$ by $S^{d_k+d_x}$ as is common in the current literature.

Ricardo Kennedy; Charles Guggenheim

2014-09-08T23:59:59.000Z

244

The impact of cosmic variance on simulating weak lensing surveys  

E-Print Network [OSTI]

Upcoming weak lensing surveys will survey large cosmological volumes to measure the growth of cosmological structure with time and thereby constrain dark energy. One major systematic uncertainty in this process is the calibration of the weak lensing shape distortions, or shears. Most upcoming surveys plan to test several aspects of their shear estimation algorithms using sophisticated image simulations that include realistic galaxy populations based on high-resolution data from the Hubble Space Telescope (HST). However, existing datasets from the (HST) cover very small cosmological volumes, so cosmic variance could cause the galaxy populations in them to be atypical. A narrow redshift slice from such surveys could be dominated by a single large overdensity or underdensity. In that case, the morphology-density relation could alter the local galaxy populations and yield an incorrect calibration of shear estimates as a function of redshift. We directly test this scenario using the COSMOS survey, the largest-area...

Kannawadi, Arun; Lackner, Claire

2014-01-01T23:59:59.000Z

245

Anomalous skin effects in a weakly magnetized degenerate electron plasma  

SciTech Connect (OSTI)

Fully relativistic analysis of anomalous skin effects for parallel propagating waves in a weakly magnetized degenerate electron plasma is presented and a graphical comparison is made with the results obtained using relativistic Maxwellian distribution function [G. Abbas, M. F. Bashir, and G. Murtaza, Phys. Plasmas 18, 102115 (2011)]. It is found that the penetration depth for R- and L-waves for degenerate case is qualitatively small in comparison with the Maxwellian plasma case. The quantitative reduction due to weak magnetic field in the skin depth in R-wave for degenerate plasma is large as compared to the non-degenerate one. By ignoring the ambient magnetic field, previous results for degenerate field free case are salvaged [A. F. Alexandrov, A. S. Bogdankevich, and A. A. Rukhadze, Principles of Plasma Electrodynamics (Springer-Verlag, Berlin/Heidelberg, 1984), p. 90].

Abbas, G., E-mail: gohar.abbas@gcu.edu.pk; Sarfraz, M. [Department of Physics, GC University Lahore, Katchery Road, Lahore 54000 (Pakistan); Shah, H. A. [Forman Christian College University, Farozpur Road, Lahore 54600 (Pakistan)

2014-09-15T23:59:59.000Z

246

Experimental feedback control of quantum systems using weak measurements  

E-Print Network [OSTI]

A goal of the emerging field of quantum control is to develop methods for quantum technologies to function robustly in the presence of noise. Central issues are the fundamental limitations on the available information about quantum systems and the disturbance they suffer in the process of measurement. In the context of a simple quantum control scenario--the stabilization of non-orthogonal states of a qubit against dephasing--we experimentally explore the use of weak measurements in feedback control. We find that, despite the intrinsic difficultly of implementing them, weak measurements allow us to control the qubit better in practice than is even theoretically possible without them. Our work shows that these more general quantum measurements can play an important role for feedback control of quantum systems.

G. G. Gillett; R. B. Dalton; B. P. Lanyon; M. P. Almeida; M. Barbieri; G. J. Pryde; J. L. O'Brien; K. J. Resch; S. D. Bartlett; A. G. White

2010-03-01T23:59:59.000Z

247

Gravitational Faraday rotation in a weak gravitational field  

Science Journals Connector (OSTI)

We examine the rotation of the plane of polarization for linearly polarized light rays by the weak gravitational field of an isolated physical system. Based on the rotation of inertial frames, we review the general integral expression for the net rotation. We apply this formula, an analogue to the usual electromagnetic Faraday effect, to some interesting astrophysical systems, namely uniformly shifting mass monopoles and a spinning external shell.

Mauro Sereno

2004-04-08T23:59:59.000Z

248

Gravitational Faraday rotation in a weak gravitational field  

E-Print Network [OSTI]

We examine the rotation of the plane of polarization for linearly polarized light rays by the weak gravitational field of an isolated physical system. Based on the rotation of inertial frames, we review the general integral expression for the net rotation. We apply this formula, analogue to the usual electromagnetic Faraday effect, to some interesting astrophysical systems: uniformly shifting mass monopoles and a spinning external shell.

Mauro Sereno

2004-01-15T23:59:59.000Z

249

Microwave studies of weak localization and antilocalization in epitaxial graphene  

SciTech Connect (OSTI)

A microwave detection method was applied to study weak localization and antilocalization in epitaxial graphene sheets grown on both polarities of SiC substrates. Both coherence and scattering length values were obtained. The scattering lengths were found to be smaller for graphene grown on C-face of SiC. The decoherence rate was found to depend linearly on temperature, showing the electron-electron scattering mechanism.

Drabi?ska, Aneta; Kami?ska, Maria [Faculty of Physics, University of Warsaw, ul. Ho?a 69, 00-681 Warsaw (Poland); Wo?o?, Agnieszka [Faculty of Physics, University of Warsaw, ul. Ho?a 69, 00-681 Warsaw, Poland and Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw (Poland); Strupinski, Wlodek [Institute of Electronic Materials Technology, ul. Wólczyñska 133, 01-919 Warsaw (Poland); Baranowski, J. M. [Faculty of Physics, University of Warsaw, ul. Ho?a 69, 00-681 Warsaw, Poland and Institute of Electronic Materials Technology, ul. Wólczyñska 133, 01-919 Warsaw (Poland)

2013-12-04T23:59:59.000Z

250

Coherence oscillations between weakly coupled Bose-Hubbard dimers  

Science Journals Connector (OSTI)

We study theoretically the dynamics of two weakly coupled Bose-Josephson junctions, prepared with the same particle number N and Josephson excitation number ? but with different reduced one-particle purity ?. An entropy oscillation mode is predicted, in which one-particle coherence is transferred between the Bose-Hubbard dimers with no particle or energy transfer. We explain this purity oscillation using a semiclassical picture.

Christine Khripkov and Amichay Vardi

2014-05-30T23:59:59.000Z

251

Weakly screened thermonuclear reactions in astrophysical plasmas: Improving Salpeter's model  

E-Print Network [OSTI]

This paper presents a detailed study of the electron degeneracy and nonlinear screening effects which play a crucial role in the validity of Salpeter's weak-screening model. The limitations of that model are investigated and an improved one is proposed which can take into account nonlinear screening effects. Its application to the solar pp reaction derives an accurate screening enhancement factor and provides a very reliable estimation of the associated neutrino flux uncertanties.

Theodore E. Liolios

2003-06-23T23:59:59.000Z

252

QEP WORKING GROUP CHARGES Assessment Working Group  

E-Print Network [OSTI]

. (Standard 2.12) During Phase I of the planning process, members of the Assessment Working Group with the institution's strategic plan, a review of the literature, definition of student learning appropriate related to goals. (Handbook for Review Committees, Standards 2.12 and 3.3.2) During Phase I

Liu, Paul

253

First Determination of the Weak Charge of the Proton  

SciTech Connect (OSTI)

The Qweak experiment has measured the parity-violating asymmetry in polarized e-p elastic scattering at Q^2 = 0.025(GeV/c)^2, employing 145 microamps of 89% longitudinally polarized electrons on a 34.4cm long liquid hydrogen target at Jefferson Lab. The results of the experiment's commissioning run are reported here, constituting approximately 4% of the data collected in the experiment. From these initial results the measured asymmetry is A_e_p = -279 +- 35 (statistics) +- 31 (systematics) ppb, which is the smallest and most precise asymmetry ever measured in polarized e-p scattering. The small Q^2 of this experiment has made possible the first determination of the weak charge of the proton, Q^p_W, by incorporating earlier parity-violating electron scattering (PVES) data at higher Q^2 to constrain hadronic corrections. The value of Q^p_W obtained in this way is Q^p_W(PVES) = 0.064 +- 0.012, in good agreement with the Standard Model prediction of Q^p_W(SM) = 0.0710 +- 0.0007. When this result is further combined with the Cs atomic parity violation (APV) measurement, significant constraints on the weak charges of the up and down quarks can also be extracted. That PVES+APV analysis reveals the neutron's weak charge to be Q^n_W(PVES+APV) = -0.975 +- 0.010.

Androic, D; Armstrong, D S; Asaturyan, A; Averett, T; Balewski, J; Beaufait, J; Beminiwattha, R S; Benesch, J; Benmokhtar, F; Birchall, J; Carlini, R D [JLAB; Cates, G D; Cornejo, J C; Covrig, S; Dalton, M M; Davis, C A; Deconinck, W; Diefenbach, J; Dowd, J F; Dunne, J A; Dutta, D; Duvall, W S; Elaasar, M; Falk, W R; Finn, J M; Forest, T; Gaskell, D; Gericke, M T. W.; Grames, J; Gray, V M; Grimm, K; Guo, F; Hoskins, J R; Johnston, K; Jones, D; Jones, M; Jones, R; Kargiantoulakis, M; King, P M; Korkmaz, E; Kowalski, S; Leacock, J; Leckey, J; Lee, A R; Lee, J H; Lee, L; MacEwan, S; Mack, D; Magee, J A; Mahurin, R; Mammei, J; Martin, J W; McHugh, M J; Meekins, D; Mei, J; Michaels, R; Micherdzinska, A; Mkrtchyan, A; Mkrtchyan, H; Morgan, N; Myers, K E; Narayan, A; Ndukum, L Z; Nelyubin, V; van Oers, W T H; Nuruzzaman,; Opper, A K; Page, S A; Pan, J; Paschke, K D; Phillips, S K; Pitt, M L; Poelker, M; Rajotte, J F; Ramsay, W D; Roche, J; Sawatzky, B; Seva, T; Shabestari, M H; Silwal, R; Simicevic, N; Smith, G R; Solvignon, P; Spayde, D T; Subedi, A; Subedi, R; Suleiman, R; Tadevosyan, V; Tobias, W A; Tvaskis, V; Waidyawansa, B; Wang, P; Wells, S P; Wood, S A; Yang, S; Young, R D; Zhamkochyan, S

2013-10-01T23:59:59.000Z

254

First Determination of the Weak Charge of the Proton  

E-Print Network [OSTI]

The Qweak experiment has measured the parity-violating asymmetry in polarized e-p elastic scattering at Q^2 = 0.025(GeV/c)^2, employing 145 microamps of 89% longitudinally polarized electrons on a 34.4cm long liquid hydrogen target at Jefferson Lab. The results of the experiment's commissioning run are reported here, constituting approximately 4% of the data collected in the experiment. From these initial results the measured asymmetry is Aep = -279 +- 35 (statistics) +- 31 (systematics) ppb, which is the smallest and most precise asymmetry ever measured in polarized e-p scattering. The small Q^2 of this experiment has made possible the first determination of the weak charge of the proton, QpW, by incorporating earlier parity-violating electron scattering (PVES) data at higher Q^2 to constrain hadronic corrections. The value of QpW obtained in this way is QpW(PVES) = 0.064 +- 0.012, in good agreement with the Standard Model prediction of QpW(SM) = 0.0710 +- 0.0007. When this result is further combined with the Cs atomic parity violation (APV) measurement, significant constraints on the weak charges of the up and down quarks can also be extracted. That PVES+APV analysis reveals the neutron's weak charge to be QnW(PVES+APV) = -0.975 +- 0.010.

Qweak Collaboration; D. Androic; D. S. Armstrong; A. Asaturyan; T. Averett; J. Balewski; J. Beaufait; R. S. Beminiwattha; J. Benesch; F. Benmokhtar; J. Birchall; R. D. Carlini; G. D. Cates; J. C. Cornejo; S. Covrig; M. M. Dalton; C. A. Davis; W. Deconinck; J. Diefenbach; J. F. Dowd; J. A. Dunne; D. Dutta; W. S. Duvall; M. Elaasar; W. R. Falk; J. M. Finn; T. Forest; D. Gaskell; M. T. W. Gericke; J. Grames; V. M. Gray; K. Grimm; F. Guo; J. R. Hoskins; K. Johnston; D. Jones; M. Jones; R. Jones; M. Kargiantoulakis; P. M. King; E. Korkmaz; S. Kowalski; J. Leacock; J. Leckey; A. R. Lee; J. H. Lee; L. Lee; S. MacEwan; D. Mack; J. A. Magee; R. Mahurin; J. Mammei; J. W. Martin; M. J. McHugh; D. Meekins; J. Mei; R. Michaels; A. Micherdzinska; A. Mkrtchyan; H. Mkrtchyan; N. Morgan; K. E. Myers; A. Narayan; L. Z. Ndukum; V. Nelyubin; Nuruzzaman; W. T. H van Oers; A. K. Opper; S. A. Page; J. Pan; K. D. Paschke; S. K. Phillips; M. L. Pitt; M. Poelker; J. F. Rajotte; W. D. Ramsay; J. Roche; B. Sawatzky; T. Seva; M. H. Shabestari; R. Silwal; N. Simicevic; G. R. Smith; P. Solvignon; D. T. Spayde; A. Subedi; R. Subedi; R. Suleiman; V. Tadevosyan; W. A. Tobias; V. Tvaskis; B. Waidyawansa; P. Wang; S. P. Wells; S. A. Wood; S. Yang; R. D. Young; S. Zhamkochyan

2013-09-02T23:59:59.000Z

255

Constraining dark energy from the abundance of weak gravitational lenses  

E-Print Network [OSTI]

We examine the prospect of using the observed abundance of weak gravitational lenses to constrain the equation-of-state parameter w of the dark energy. Here we solve the spherical-collapse model with dark energy, clarifying some ambiguities found in the literature, and provide fitting formulas for the overdensity at virialization and the linear-theory overdensity at collapse. We then compute the variation in the predicted weak-lens abundance with w. We find that the predicted redshift distribution and number count of weak lenses are highly degenerate in w and \\Omega_0. If we fix \\Omega_0 the number count for w=-2/3 is a factor of 2 smaller than for the \\LambdaCDM model. However, if we allow \\Omega_0 to vary with w such that the amplitude of the matter power spectrum as measured by COBE matches that obtained from the X-ray cluster abundance, the decrease in the predicted lens abundance is less than 25% for -1 40 degree^2 in order for the number count to differentiate a \\LambdaCDM cosmology from a w=-0.9 model...

Weinberg, N N; Weinberg, Nevin N.; Kamionkowski, Marc

2003-01-01T23:59:59.000Z

256

TEC Working Group Background | Department of Energy  

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

Background Background TEC Working Group Background Through the TEC/WG, DOE interacted with representatives of organizations at the state, tribal, and local levels to obtain input for program needs assessment, development and management, and to enhance their capability to carry out transportation emergency preparedness and safety activities specifically related to radioactive materials shipments. TEC membership included representatives from national, state, tribal and local government organizations, labor, industry and professional groups. Members meet semiannually to participate in plenary sessions, breakout work sessions, and in more specialized Topic Groups. To learn more about the history and background of TEC, please see the following documents: TEC Charter TEC Work Plan

257

The Similarity Renormalization Group with Novel Generators  

E-Print Network [OSTI]

The choice of generator in the Similarity Renormalization Group (SRG) flow equation determines the evolution pattern of the Hamiltonian. The kinetic energy has been used in the generator for most prior applications to nuclear interactions, and other options have been largely unexplored. Here we show how variations of this standard choice can allow the evolution to proceed more efficiently without losing its advantages.

W. Li; E. R. Anderson; R. J. Furnstahl

2011-06-14T23:59:59.000Z

258

Similarity renormalization group with novel generators  

Science Journals Connector (OSTI)

The choice of generator in the similarity renormalization group (SRG) flow equation determines the evolution pattern of the Hamiltonian. The kinetic energy has been used in the generator for most prior applications to nuclear interactions, and other options have been largely unexplored. Here we show how variations of this standard choice can allow the evolution to proceed more efficiently without losing its advantages.

W. Li; E. R. Anderson; R. J. Furnstahl

2011-11-04T23:59:59.000Z

259

Weakly-Basic Anion Exchange Resin Scavenges Impurities in Ionic Liquid Synthesized from Trialkyloxonium Salt  

Science Journals Connector (OSTI)

The Lewis acidic parts of these impurities, that is, H+ and BF3, were demonstrated to be able to transfer to dimethylamino groups of the weakly basic anion exchange resin (DOWEX MARATHON WBA) in aqueous solutions, releasing 1-methylimidazole (mim). ... Although intense reddish brown color was given to the residual oil of [emim]BF4, further purification and decolorization have been achieved by using silica-gel column chromatography (eluent: acetone) and treatment with activated carbon in water. ... The detection and determination of [emim]+, mim, [Hmim]+, [BF3(mim)], and BF4– in the recovered oils and collected volatiles from each batch were performed by using chemical shifts and peak integrals in the 1H and 19F NMR spectra. ...

Koichiro Takao; Taro Tsubomura

2012-08-24T23:59:59.000Z

260

Trails Working Group  

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

Trails Working Group Trails Working Group Trails Working Group Our mission is to inventory, map, and prepare historical reports on the many trails used at LANL. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email The LANL Trails Working Group inventories, maps, and prepares historical reports on the many trails used at LANL. Some of these trails are ancient pueblo footpaths that continue to be used for recreational hiking today. Some serve as quiet and non-motorized alternatives between the Townsite and LANL or between technical areas. The Trails Working Group, established in December 2003, includes representatives from local citizen hiking groups, Los Alamos County, Forest Service, Park Service, Los Alamos National Laboratory and the NNSA Los

Note: This page contains sample records for the topic "group weak interactions" 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

Photoelectrochemical Working Group  

Broader source: Energy.gov [DOE]

The Photoelectrochemical Working Group meets regularly to review technical progress, develop synergies, and collaboratively develop common tools and processes for photoelectrochemical (PEC) water...

262

Hydrogen Technologies Group  

SciTech Connect (OSTI)

The Hydrogen Technologies Group at the National Renewable Energy Laboratory advances the Hydrogen Technologies and Systems Center's mission by researching a variety of hydrogen technologies.

Not Available

2008-03-01T23:59:59.000Z

263

Yennello Group Home Page  

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

of Science Texas A&M University The Group Activities Publications Articles Talks and Posters Detectors Links Pictures Women in Nuclear Science Internal Documents Contacts run...

264

Tribal Topic Group Summary  

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

Caucus created a mission statement and resolution: - All Tribes with cultural ties to Yucca Mountain should be invited to join TEC - Ongoing funds to support Tribal Topic Group...

265

Hydrogen Pipeline Working Group  

Broader source: Energy.gov [DOE]

The Hydrogen Pipeline Working Group of research and industry experts focuses on issues related to the cost, safety, and reliability of hydrogen pipelines. Participants represent organizations...

266

HASQARD Focus Group  

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

failure occurs." for ICPMS analysis and "One per analytical batch" for ICPAES and flame atomic absorption analysis. This was more frequent than the Focus Group members recalled...

267

HASQARD Focus Group  

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

expectations for incorporating Focus Group interpretations of HASQARD requirements in the document without a new letter from DOE contracting officers (COs) going out to the...

268

Evolutionary dynamics of group interactions on structured populations: a review  

Science Journals Connector (OSTI)

...implementation of social policies is thus possible, and in Smaldino Lubell [137] it was shown that restricting the maximum capacity of...j.biosystems.2009.10.003 ) 137 Smaldino, P , and M Lubell. 2011 An institutional mechanism for assortment in an ecology...

2013-01-01T23:59:59.000Z

269

Interacting Compasses  

Science Journals Connector (OSTI)

The use of multiple compasses to map and visualize magnetic fields is well-known. The magnetic field exerts a torque on the compasses aligning them along the lines of force. Some science museums show the field of a magnet using a table with many compasses in a closely packed arrangement. However the very interesting interactions that occur between the compasses themselves are frequently neglected. In this paper we describe demonstrations using arrays of compasses that show these interactions and model magnetic domains in ferromagnetic materials.

Héctor G. Riveros; Julián Betancourt

2009-01-01T23:59:59.000Z

270

Near- and subbarrier elastic and quasielastic scattering of the weakly bound {sup 6}Li projectile on {sup 144}Sm  

SciTech Connect (OSTI)

High-precision data of backward-angle elastic and quasielastic scattering for the weakly bound {sup 6}Li projectile on {sup 144}Sm target at deep-sub-barrier, near-, and above-barrier energies were measured. From the deep-sub-barrier data, the surface diffuseness of the nuclear interacting potential was studied. Barrier distributions were extracted from the first derivatives of the elastic and quasielastic excitation functions. It is shown that sequential breakup through the first resonant state of the {sup 6}Li is an important channel to be included in coupled-channels calculations, even at deep-sub-barrier energies.

Monteiro, D. S.; Otomar, D. R.; Lubian, J.; Gomes, P. R. S. [Instituto de Fisica, Universidade Federal Fluminense, Av. Litoranea s/n, Gragoata, Niteroi, R.J., 24210-340 (Brazil); Capurro, O. A.; Marti, G. V. [Laboratorio TANDAR, Comision Nacional de Energia Atomica, Av. General Paz 1499, 1650 San Martin, Buenos Aires (Argentina); Arazi, A.; Figueira, J. M.; Heimann, D. Martinez; Negri, A. E.; Pacheco, A. J. [Laboratorio TANDAR, Comision Nacional de Energia Atomica, Av. General Paz 1499, 1650 San Martin, Buenos Aires (Argentina); CONICET, Av. Rivadavia 1917, Buenos Aires (1033) (Argentina); Niello, J. O. Fernandez [Laboratorio TANDAR, Comision Nacional de Energia Atomica, Av. General Paz 1499, 1650 San Martin, Buenos Aires (Argentina); CONICET, Av. Rivadavia 1917, Buenos Aires (1033) (Argentina); Escuela de Ciencia y Tecnologia, Univ. Nac. de San Martin, San Martin (1650), Buenos Aires (Argentina); Guimaraes, V. [Instituto de Fisica, Universidade de Sao Paulo, Caixa postal 66318, 05315-970, Sao Paulo, S.P. (Brazil)

2009-01-15T23:59:59.000Z

271

Project Documentation Group Members  

E-Print Network [OSTI]

agencies to track client services and outcomes, thus providing sound documentation that justifies stateCSC 4330 Project Documentation 11/30/2009 Group Members: Andy Bursavich Justin Farr Will Folse Chris Miceli Michael Miceli #12;Group Answers I. The Title ­ UREC Client Tracking System II. The project

Kundu, Sukhamay

272

Mechanical Engineering & Thermal Group  

E-Print Network [OSTI]

Mechanical Engineering & Thermal Group The Mechanical Engineering (ME) & Thermal Group at LASP has, and ground- based mechanical systems. Instrument Design Building on decades of design experience that has evolved with the complexity of instrument design demands, LASP mechanical engineers develop advanced

Mojzsis, Stephen J.

273

Lattice Boltzmann method for weakly ionized isothermal plasmas  

Science Journals Connector (OSTI)

In this paper, a lattice Boltzmann method (LBM) for weakly ionized isothermal plasmas is presented by introducing a rescaling scheme for the Boltzmann transport equation. Without using this rescaling, we found that the nondimensional relaxation time used in the LBM is too large and the LBM does not produce physically realistic results. The developed model was applied to the electrostatic wave problem and the diffusion process of singly ionized helium plasmas with a 1–3% degree of ionization under an electric field. The obtained results agree well with theoretical values.

Huayu Li and Hyungson Ki

2007-12-21T23:59:59.000Z

274

Lattice Boltzmann method for weakly ionized isothermal plasmas  

SciTech Connect (OSTI)

In this paper, a lattice Boltzmann method (LBM) for weakly ionized isothermal plasmas is presented by introducing a rescaling scheme for the Boltzmann transport equation. Without using this rescaling, we found that the nondimensional relaxation time used in the LBM is too large and the LBM does not produce physically realistic results. The developed model was applied to the electrostatic wave problem and the diffusion process of singly ionized helium plasmas with a 1-3% degree of ionization under an electric field. The obtained results agree well with theoretical values.

Li Huayu; Ki, Hyungson [Department of Mechanical Engineering, Michigan State University, East Lansing, Michigan 48824-1226 (United States)

2007-12-15T23:59:59.000Z

275

Self-gravitating line sources of weak hypercharge  

E-Print Network [OSTI]

We explore the role of the Cremmer-Scherk mechanism in the context of low energy effective string theory by coupling the antisymmetric 3-form gauge potential to an Abelian gauge potential carrying weak hypercharge. The theory admits a class of exact self-gravitating solutions in the spontaneously broken phase in which the dual fields acquire massive perturbative modes. Despite the massive nature of these fields they admit non-perturbative progressive longitudinal modes that together with pp-type gravitational waves travel in a direction of a line source at the speed of light.

T. Dereli; R. W. Tucker

1999-02-19T23:59:59.000Z

276

Mechanical squeezing via parametric amplification and weak measurement  

E-Print Network [OSTI]

Nonlinear forces allow motion of a mechanical oscillator to be squeezed below the zero-point motion. Of existing methods, mechanical parametric amplification is relatively accessible, but previously thought to be limited to 3dB of squeezing in the steady state. We consider the effect of applying continuous weak measurement and feedback to this system. If the parametric drive is optimally detuned from resonance, correlations between the quadratures of motion allow unlimited steady-state squeezing. Compared to back-action evasion, we demonstrate that the measurement strength, temperature and efficiency requirements for quantum squeezing are significantly relaxed.

Alex Szorkovszky; Andrew C. Doherty; Glen I. Harris; Warwick P. Bowen

2011-09-30T23:59:59.000Z

277

Neutrino Mass and Dark Energy from Weak Lensing  

Science Journals Connector (OSTI)

Weak gravitational lensing of background galaxies by intervening matter directly probes the mass distribution in the Universe. This distribution is sensitive to both the dark energy and neutrino mass. We examine the potential of lensing experiments to measure features of both simultaneously. Focusing on the radial information contained in a future deep 4000??deg2 survey, we find that the expected (1-?) error on a neutrino mass is 0.1 eV, if the dark-energy parameters are allowed to vary. The constraints on dark-energy parameters are similarly restrictive, with errors on w of 0.09.

Kevork N. Abazajian and Scott Dodelson

2003-07-24T23:59:59.000Z

278

Interagency Working Groups (IWGs)  

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

Interagency Working Groups (IWGs) Print E-mail Interagency Working Groups (IWGs) Print E-mail Interagency Working Groups (IWGs) are the primary USGCRP vehicles for implementing and coordinating research activities within and across agencies. These groups are critical to Program integration and in assessing the Program's progress. The working groups span a wide range of interconnected issues of climate and global change, and address major components of the Earth's environmental and human systems, as well as cross-disciplinary approaches for addressing these issues. IWGs correspond to program functions and are designed to bring agencies together to plan and develop coordinated activities, implement joint activities, and identify and fill gaps in the Program's plans. They allow public officials to communicate with each other on emerging directions within their agencies, on their stakeholder needs, and on best practices learned from agency activities. Together, these functions allow the agencies to work in a more coordinated and effective manner.

279

Steering Group Report  

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

Steering Steering Group Report Fermilab Director Pier Oddone convened the Fermilab Steering Group in March 2007. Members comprised particle and accelerator scientists from Fermilab and the national community. Fermilab Deputy Director Young-Kee Kim served as chair. The Steering Group subsequently formed subgroups to provide advice on the best physics opportunities that new facilities could offer. These subgroups drew upon university and laboratory scientists largely from outside Fermilab. The Steering Group took a number of steps to obtain as much input as possible from a broad spectrum of the U.S. particle- and accelerator-physics community. The Steering Group chair gave presentations and conducted town-hall-style sessions at meetings of all the major collaborations at Fermilab (CDF, DZero, MINOS, MINERνA,

280

Topic Group Participants  

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

Topic Group Report Topic Group Report Presented to: Transportation External Coordination Working Group April 5, 2005 Phoenix, Arizona Recent 180(c) Topic Group Activities Issue Papers 1. Funding Distribution Method 2. Allowable Activities 3. Definitions 4. Pass-Through Requirements 5. Contingency Plans 6. 180(c) Policy or Rulemaking 7. Timing and Eligibility* 8. Funding for Related Activities* 9. State Fees* 10. Funding Allocation Approach* 180(c) Policy & Procedures * Executive Summary * Draft Policy & Procedures * Draft Grant Application Pckg * Appendix *Papers 7-10 still under discussion Today's Discussion Items * Reviewed Topic Group member comments on a variety of issues * Key issues included: - Funding allocation and timing of grants - Planning grants - State fees/matching requirements - Related non-training activities

Note: This page contains sample records for the topic "group weak interactions" 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

High-Frequency Resonance of A Weak Ferromagnet: MnCO3  

Science Journals Connector (OSTI)

The high-frequency resonance of MnCO3 in the canted state was found at 95.7 Gc/sec in zero field at 20.4°K which corresponds to a uniaxial anisotropy energy of 31.4×10-3 cm-1. The frequency dependence of the resonance for magnetic fields parallel to the [111] direction and the angular dependence of the resonance for constant frequency were measured. The latter was found to be different from that of a pure antiferromagnet due to the anisotropic spin-spin interaction. At absolute zero we estimated the zero-field splitting to occur at approximately 132 Gc/sec. When the magnetic field was applied in the (111) plane, the resonance could not be observed due to broadening effects. The broadening effects were also large in magnetic fields smaller than 7 kG. MnCO3 is the first weak ferromagnet with anisotropic spin-spin interaction where the high-frequency branch has been found.

H. J. Fink and D. Shaltiel

1963-04-15T23:59:59.000Z

282

Experimental method to find weak bond distribution functions in a high-temperature superconductor  

Science Journals Connector (OSTI)

A simple phenomenological model of a weakly bonded superconductor is suggested. The model considers the transition from a single weak dangling bond to a disruptive two-dimensional structure in taking the I–V char...

M. A. Vasyutin

2013-11-01T23:59:59.000Z

283

Lie groups of conformal motions acting on null orbits  

E-Print Network [OSTI]

Space-times admitting a 3-dimensional Lie group of conformal motions $C_3$ acting on null orbits are studied. Coordinate expressions for the metric and the conformal Killing vectors (CKV) are provided (irrespectively of the matter content) and then all possible perfect fluid solutions are found, although none of these verify the weak and dominant energy conditions over the whole space-time manifold.

A. M. Sintes; A. A. Coley; J. Carot

1997-08-11T23:59:59.000Z

284

A New Shear Estimator for Weak Lensing Observations  

E-Print Network [OSTI]

We present a new shear estimator for weak lensing observations which properly accounts for the effects of a realistic point spread function (PSF). Images of faint galaxies are subject to gravitational shearing followed by smearing with the instrumental and/or atmospheric PSF. We construct a `finite resolution shear operator' which when applied to an observed image has the same effect as a gravitational shear applied prior to smearing. This operator allows one to calibrate essentially any shear estimator. We then specialize to the case of weighted second moment shear estimators. We compute the shear polarizability which gives the response of an individual galaxy's polarization to a gravitational shear. We then compute the response of the population of galaxies, and thereby construct an optimal weighting scheme for combining shear estimates from galaxies of various shapes, luminosities and sizes. We define a figure of merit --- an inverse shear variance per unit solid angle --- which characterizes the quality of image data for shear measurement. The new method is tested with simulated image data. We discuss the correction for anisotropy of the PSF and propose a new technique involving measuring shapes from images which have been convolved with a re-circularizing PSF. We draw attention to a hitherto ignored noise related bias and show how this can be analyzed and corrected for. The analysis here draws heavily on the properties of real PSF's and we include as an appendix a brief review, highlighting those aspects which are relevant for weak lensing.

Nick Kaiser

1999-04-01T23:59:59.000Z

285

Sensory hyperacuity in the jamming avoidance response of weakly electric fish  

E-Print Network [OSTI]

and the African weakly electric fish Cymnanhus perform electrolocation by generating constant wave-type electric473 Sensory hyperacuity in the jamming avoidance response of weakly electric fish Masashi Kawasaki Sensory systems often show remarkable sensitivities to small stimulus parameters. Weakly electric

Kawasaki, Masashi

286

SI Group Scheduling Page  

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

Personnel On-Call Page Beamline Validation Schedule Group Organizational Chart Reviews Presentations Group Scheduling Page Project Scheduling Information Ops Scheduling Info Project / Scheduling Info APS fy2005 Annual Schedule ( html ) PSS Validation Schedule APS fy2006 Annual Schedule (html) PSS Validation Teams Latest Machine Studies Schedule (pdf) (html) New Builds Schedule (For SI GROUP Reference Only) Parasitic Beam Operations Schedule Ops Scheduling Page Shutdown Information Work Schedules August/September Shutdown Shutdown Work List Validation Schedule Safety Info Work Request Links ISM Core Functions Enter / Search Work Requests APS Safety Page Modify / Approve Work Requests Radiation Safety Policy APS TMS Training Profiles MSDS Search This page maintained by Joe Budz

287

Fermilab Steering Group Report  

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

Steering Group Steering Group Eugene Beier University of Pennsylvania Joel Butler Fermi National Accelerator Laboratory Sally Dawson Brookhaven National Laboratory Helen Edwards Fermi National Accelerator Laboratory Thomas Himel Stanford Linear Accelerator Center Stephen Holmes Fermi National Accelerator Laboratory Young-Kee Kim, Chair Fermi National Accelerator Laboratory/ University of Chicago Andrew Lankford University of California, Irvine David McGinnis Fermi National Accelerator Laboratory Sergei Nagaitsev Fermi National Accelerator Laboratory Tor Raubenheimer Stanford Linear Accelerator Center Vladimir Shiltsev Fermi National Accelerator Laboratory Maury Tigner Cornell University Hendrik Weerts Argonne National Laboratory Contributors Neutrino Physics Group Eugene Beier University of Pennsylvania

288

Indoor Environment Group  

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

Indoor Environment Group Indoor Environment Group The Indoor Environment Group performs research that aims to maintain healthy and productive indoor environments while buildings are made more energy efficient. We study the links between indoor environmental quality, building ventilation, building energy efficiency and occupants' health, performance and comfort. We undertake experiments in laboratory and field settings and employ modeling to characterize indoor environmental conditions and evaluate the fate, transport and chemical transformations of indoor pollutants. We elucidate pathways of pollutant exposure, evaluate and develop energy efficient means of controlling indoor environmental quality, and provide input for related guidelines and standards. Contacts William Fisk WJFisk@lbl.gov (510) 486-5910

289

Ising Model with a Scaling Interaction  

Science Journals Connector (OSTI)

A spin-infinity Ising model is presented in which there is a hierarchy of spin groupings, for which the interaction potential satisfies exactly the scaling hypothesis that group-group interactions involve only the group mean spin. The calculation of the critical exponents for this model is reduced to the solution of an eigenvalue problem which appears to be numerical tractable. The value of the critical exponent ? appears as a parameter of the model and formulas for the critical exponents ?, ?, ? are presented. Assuming ?=0 for three dimensions, we obtain ?=5, ?=1.30, and ?=0.65.

George A. Baker; Jr.

1972-04-01T23:59:59.000Z

290

Focus Group I  

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

CARBON SEQUESTRATION - A COMMUNITY FOCUS GROUP STUDY OF CARBON SEQUESTRATION - A COMMUNITY FOCUS GROUP STUDY OF ATTITUDES IN WILLISTON, NORTH DAKOTA Sheila K. Hanson, Energy & Environmental Research Center Daniel J. Daly, Energy & Environmental Research Center Edward N. Steadman, Energy & Environmental Research Center John A. Harju, Energy & Environmental Research Center June 2005 EXECUTIVE SUMMARY In April 2005, representatives of the Plains CO 2 Reduction (PCOR) Partnership, led by the Energy & Environmental Research Center (EERC) at the University of North Dakota, held two focus groups in Williston, North Dakota. A total of sixteen people participated; seven on April 20 and nine on April 21. The purpose of the focus group research was to gain insight into the public perception of carbon sequestration from

291

Electric Vehicle Research Group  

E-Print Network [OSTI]

.................................................................................9 From diesel to electric: a new era in personnel transport for underground coal minesElectric Vehicle Research Group Annual Report 2012 #12;Table of Contents Executive Summary................................................................................8 C2-25 Electric Vehicle Drivetrain

Liley, David

292

Usage Statistics By Group  

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

Usage Statistics Usage Statistics Genepool Cluster Statistics Period: daily weekly monthly quarter yearly 2year Utilization By Group Jobs Pending Last edited: 2013-09-26 18:21:13...

293

Strategic Initiatives Work Group  

Broader source: Energy.gov [DOE]

The Work Group, comprised of members representing DOE, contractor and worker representatives, provides a forum for information sharing; data collection and analysis; as well as, identifying best practices and initiatives to enhance safety performance and safety culture across the Complex.

294

Security Topic Group  

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

Group Group Security and TEC * Tension exists between open forum concept of TEC and the ability of STG members to discuss security topics. - DOE will maintain the open forum - it will not form a subgroup of cleared members NAS Study * Some members want STG to formally recommend a fully independent review of security issues - DOE is reviewing the NAS study and has not formulated a position Security Topic Group (Continued) Classification Guide & Information Sharing Protocol * Guide is finished and undergoing internal concurrence - Slated for late September release * Protocol will be completed once the guide is issued Security-Related Lessons Learned * Lessons learned document was distributed and comments requested by the end of March Security Topic Group (Continued) SRG/CVSA Survey

295

Effect of Coulomb interaction on multi-electronwave packet dynamics  

SciTech Connect (OSTI)

We have investigated the effect of Coulomb interaction on electron transport in a one-dimensional nanoscale structure using a multi-electron wave packet approach. To study the time evolution, we numerically solve the time-dependent Hartree-Fock equation, finding that the electron wave packet dynamics strongly depends on the Coulomb interaction strength. When the Coulomb interaction is large, each electron wave packet moves separately in the presence of an electric field. With weak Coulomb interaction, however, the electron wave packets overlap, forming and moving as one collective wave packet.

Shiokawa, T. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8571 (Japan); Takada, Y. [Faculty of Engineering, Tokyo University of Science, Chiyoda, Tokyo, 102-0073, Japan and CREST, Japan Science and Technology Agency (Japan); Konabe, S.; Hatsugai, Y. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8571, Japan and CREST, Japan Science and Technology Agency (Japan); Muraguchi, M. [Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan and CREST, Japan Science and Technology Agency (Japan); Endoh, T. [Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan and Center for Spintronics Integrated Systems, Tohoku University, Sendai, 980-8577, Japan and CREST, Japan Science and Technology Agency (Japan); Shiraishi, K. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8571, Japan and Center for Computational Science, University of Tsukuba, Tsukuba, 305-8577, Japan and CREST, Japan Science and Technology Agency (Japan)

2013-12-04T23:59:59.000Z

296

Independents' group posts loss  

SciTech Connect (OSTI)

Low oil gas prices and special charges caused the group of 50 U.S. independent producers Oil and Gas Journal tracks to post a combined loss in first half 1992. The group logged a net loss of $53 million in the first half compared with net earnings of $354 million in first half 1991, when higher oil prices during the Persian Gulf crisis buoyed earnings in spite of crude oil and natural gas production declines. The combined loss in the first half follows a 45% drop in the group's earnings in 1991 and compares with the OGJ group of integrated oil companies whose first half 1992 income fell 47% from the prior year. Special charges, generally related to asset writedowns, accounted for most of the almost $560 million in losses posted by about the third of the group. Nerco Oil and Gas Inc., Vancouver, Wash., alone accounted for almost half that total with charges related to an asset writedown of $238 million in the first quarter. Despite the poor first half performance, the outlook is bright for sharply improved group earnings in the second half, assuming reasonably healthy oil and gas prices and increased production resulting from acquisitions and in response to those prices.

Sanders, V.; Price, R.B.

1992-11-23T23:59:59.000Z

297

In-situ weak-beam and polarization control of multidimensional laser sidebands for ultrafast optical switching  

SciTech Connect (OSTI)

All-optical switching has myriad applications in optoelectronics, optical communications, and quantum information technology. To achieve ultrafast optical switching in a compact yet versatile setup, we demonstrate distinct sets of two-dimensional (2D) broadband up-converted multicolor arrays (BUMAs) in a thin type-I ?-barium-borate crystal with two noncollinear near-IR femtosecond pulses at various phase-matching conditions. The unique interaction mechanism is revealed as quadratic spatial solitons (QSSs)-coupled cascaded four-wave mixing (CFWM), corroborated by numerical calculations of the governing phase-matching conditions. Broad and continuous spectral-spatial tunability of the 2D BUMAs are achieved by varying the time delay between the two incident pulses that undergo CFWM interaction, rooted in the chirped nature of the weak white light and the QSSs generation of the intense fundamental beam. The control of 2D BUMAs is accomplished via seeding a weak second-harmonic pulse in situ to suppress the 2D arrays with polarization dependence on the femtosecond timescale that matches the control pulse duration of ?35 fs. A potential application is proposed on femtosecond all-optical switching in an integrated wavelength-time division multiplexing device.

Liu, Weimin; Wang, Liang; Fang, Chong, E-mail: Chong.Fang@oregonstate.edu [Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 (United States)

2014-03-17T23:59:59.000Z

298

Searches for Exotic Interactions Using Neutron Spin Rotation  

E-Print Network [OSTI]

Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. I present both measured and projected limits on the strengths of two possible interactions that could be mediated by these new particles, and how one may additionally use these results to search for in matter gravitational torsion.

Haddock, Chris

2014-01-01T23:59:59.000Z

299

PROTOSTELLAR DISK FORMATION ENABLED BY WEAK, MISALIGNED MAGNETIC FIELDS  

SciTech Connect (OSTI)

The gas from which stars form is magnetized, and strong magnetic fields can efficiently transport angular momentum. Most theoretical models of this phenomenon find that it should prevent formation of large (>100 AU), rotationally supported disks around most protostars, even when non-ideal magnetohydrodynamic (MHD) effects that allow the field and gas to decouple are taken into account. Using recent observations of magnetic field strengths and orientations in protostellar cores, we show that this conclusion is incorrect. The distribution of magnetic field strengths is very broad, and alignments between fields and angular momentum vectors within protostellar cores are essentially random. By combining the field strength and misalignment data with MHD simulations showing that disk formation is expected for both weak and misaligned fields, we show that these observations imply that we should expect disk fractions of {approx}10%-50% even when protostars are still deeply embedded in their parent cores, and even if the gas is governed by ideal MHD.

Krumholz, Mark R. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Crutcher, Richard M. [Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W Green Street, Urbana, IL 61801 (United States); Hull, Charles L. H., E-mail: mkrumhol@ucsc.edu [Astronomy Department and Radio Astronomy Laboratory, University of California, Berkeley, CA 94720-3411 (United States)

2013-04-10T23:59:59.000Z

300

Analytical Kerr black hole lensing in the weak deflection limit  

Science Journals Connector (OSTI)

We present an analytical treatment of gravitational lensing by a Kerr black hole in the weak deflection limit. Lightlike geodesics are expanded as a Taylor series up to and including third-order terms in m/b and a/b, where m is the black hole mass, a the angular momentum, and b the impact parameter of the light ray. Positions and magnifications of individual images are computed with a perturbative analysis. At this order, the degeneracy with the translated Schwarzschild lens is broken. The critical curve is still a circle displaced from the black hole position in the equatorial direction and the corresponding caustic is pointlike. The degeneracy between the black hole spin and its inclination relative to the observer is broken through the angular coordinates of the perturbed images.

Mauro Sereno and Fabiana De Luca

2006-12-21T23:59:59.000Z

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


301

A New Shear Estimator for Weak Lensing Observations  

E-Print Network [OSTI]

We present a new shear estimator for weak lensing observations which properly accounts for the effects of a realistic point spread function (PSF). Images of faint galaxies are subject to gravitational shearing followed by smearing with the instrumental and/or atmospheric PSF. We construct a `finite resolution shear operator' which when applied to an observed image has the same effect as a gravitational shear applied prior to smearing. This operator allows one to calibrate essentially any shear estimator. We then specialize to the case of weighted second moment shear estimators. We compute the shear polarizability which gives the response of an individual galaxy's polarization to a gravitational shear. We then compute the response of the population of galaxies, and thereby construct an optimal weighting scheme for combining shear estimates from galaxies of various shapes, luminosities and sizes. We define a figure of merit --- an inverse shear variance per unit solid angle --- which characterizes the quality o...

Kaiser, N

1999-01-01T23:59:59.000Z

302

Weak-strong clustering transition in renewing compressible flows  

E-Print Network [OSTI]

We investigate the statistical properties of Lagrangian tracers transported by a time-correlated compressible renewing flow. We show that the preferential sampling of the phase space performed by tracers yields significant differences between the Lagrangian statistics and its Eulerian counterpart. In particular, the effective compressibility experienced by tracers has a non-trivial dependence on the time correlation of the flow. We examine the consequence of this phenomenon on the clustering of tracers, focusing on the transition from the weak- to the strong-clustering regime. We find that the critical compressibility at which the transition occurs is minimum when the time correlation of the flow is of the order of the typical eddy turnover time. Further, we demonstrate that the clustering properties in time-correlated compressible flows are non-universal and are strongly influenced by the spatio-temporal structure of the velocity field.

Ajinkya Dhanagare; Stefano Musacchio; Dario Vincenzi

2014-11-01T23:59:59.000Z

303

Autoresonance energy transfer versus localization in weakly coupled oscillators  

E-Print Network [OSTI]

In this paper we investigate the distribution of energy between weakly coupled linear and nonlinear oscillators in a two-degree-of-freedom (2D) system. Two classes of problems are studied analytically and numerically: (1) a periodic force with constant frequency is applied to the nonlinear (Duffing) oscillator with slowly time-decreasing linear stiffness; (2) the time-independent nonlinear oscillator is excited by a force with slowly increasing frequency. In both cases, stiffness of the attached linear oscillator and linear coupling remain constant, and the system is initially engaged in resonance. This paper demonstrates that in the systems of the first type autoresonance (AR) occurs in both oscillators while in systems of the second type AR occurs only in the excited nonlinear oscillator but the coupled linear oscillator exhibits small bounded oscillations. Considering slow detuning, we obtain explicit asymptotic approximations for the amplitudes and the phases of oscillations close to exact (numerical) results.

Agnessa Kovaleva; Leonid Manevitch

2014-10-22T23:59:59.000Z

304

Extraction of a Weak Phase from $B \\to D^{(*)} \\pi$  

E-Print Network [OSTI]

To observe CP-violating asymmetries through the interference of a weaker amplitude with a stronger one in $\\bo \\to D^{(*)} \\pi$ and $\\ob \\to D^{(*)} \\pi$ decays, one must collect enough events that the intensity associated with the weaker amplitude would be statistically significant. We show that provided the weaker amplitude is measured separately in $B^\\pm \\to D^{(*)\\pm} \\pi^0$ decays, the time-integrated approach requires around $2.5 \\cdot 10^8 \\ B \\bar B$ pairs for measurements of the weak phase $\\sin(2\\beta + \\gamma)$ with an uncertainty of $0.05$ or better. We also determine the optimal conditions for precise $2\\beta + \\gamma$ measurements and discuss the possibilities for resolving a discrete ambiguity.

Suprun, D A; Rosner, Jonathan L; Suprun, Denis; Chiang, Cheng-Wei; Rosner, Jonathan L.

2002-01-01T23:59:59.000Z

305

Extraction of a Weak Phase from $B \\to D^{(*)} ?$  

E-Print Network [OSTI]

To observe CP-violating asymmetries through the interference of a weaker amplitude with a stronger one in $\\bo \\to D^{(*)} \\pi$ and $\\ob \\to D^{(*)} \\pi$ decays, one must collect enough events that the intensity associated with the weaker amplitude would be statistically significant. We show that provided the weaker amplitude is measured separately in $B^\\pm \\to D^{(*)\\pm} \\pi^0$ decays, the time-integrated approach requires around $2.5 \\cdot 10^8 \\ B \\bar B$ pairs for measurements of the weak phase $\\sin(2\\beta + \\gamma)$ with an uncertainty of $0.05$ or better. We also determine the optimal conditions for precise $2\\beta + \\gamma$ measurements and discuss the possibilities for resolving a discrete ambiguity.

Denis Suprun; Cheng-Wei Chiang; Jonathan L. Rosner

2001-10-11T23:59:59.000Z

306

X-ray Science Division: Groups  

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

Division: Groups Division: Groups Atomic, Molecular and Optical Physics (AMO) Primary Contact: Stephen Southworth Work focuses on understanding how strong optical and x-ray fields interact with matter, with an emphasis on photonic control of electronic, atomic and molecular motion. Chemical and Materials Science (CMS) Primary Contact: Randy Winans Research Disciplines: Chemistry, Materials Science Detectors (DET) Primary Contact: Antonino Miceli GMCA Structural Biology Facility (MX) Primary Contact: Robert Fischetti Research Disciplines: Biology, Life Sciences Imaging (IMG) Primary Contact: Francesco DeCarlo Research Disciplines: Materials Science, Biology, Physics, Life Sciences Inelastic X-ray & Nuclear Resonant Scattering (IXN) Primary Contact: Thomas Gog Research Disciplines: Condensed Matter Physics, Geophysics, Materials

307

Lighting Group: Overview  

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

Overview Overview Overview of the Lighting Research Group The Lighting Research Group at Lawrence Berkeley National Laboratory performs research aimed at improving the energy efficiency of lighting systems in buildings and homes, throughout the State of California and across the Nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research in the Lighting Group falls into three main areas: Sources and Ballasts, Light Distribution Systems and Controls and Communications. Click on a link below for more information about each of these research areas. Sources and Ballasts investigates next generation light sources, such as

308

Specific Group Hardware  

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

Specific Group Hardware Specific Group Hardware Specific Group Hardware ALICE palicevo1 The Virtual Organization (VO) server. Serves as gatekeeper for ALICE jobs. It's duties include getting assignments from ALICE file catalog (at CERN), submitting jobs to pdsfgrid (via condor) which submits jobs to the compute nodes, monitoring the cluster work load, and uploading job information to ALICE file catalog. It is monitored with MonALISA (the monitoring page is here). It's made up of 2 Intel Xeon E5520 processors each with 4 cores (16 virtual cores with hyperthreading). The total local disk space is 1.9 TB. It is running Scientific Linux SL release 5.5 (Boron) and is disk booted. It is in rack 17. palicevo2 The Virtual Organization (VO) server testbed. It's a Dell PowerEdge R410 with 2 Intel Xeon E5520 processors, each with 4 cores (16 virtual cores

309

The China Energy Group  

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

5 5 The China Energy Group A city-owned cogeneration plant, built in 1989 in Weihai, Shandong, received an award from the Chinese government as an advanced energy-efficient enterprise. The Energy Analysis Program's China Energy Group-a core team of four Mandarin-speaking U.S. and Chinese researchers, plus leader Mark Levine and a dozen other staff members-has worked closely with energy policymakers in China for nearly a decade. Their goal is to better understand the dynamics of energy use in China and to develop and enhance the capabilities of institutions that promote energy efficiency in that country. This unique collaboration began as a joint effort with the Energy Research Institute of China's State Planning Commission, but the Group's network has expanded to

310

DOE STGWG Group  

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

STGWG Group STGWG Group The State and Tribal Government Working Group (STGWG) is one of the intergovernmental organizations with which the DOE EM office works with. They meet twice yearly for updates to the EM projects. They were formed in 1989. It is comprised of several state legislators and tribal staff and leadership from states in proximity to DOE's environmental cleanup sites of the following states: New York, South Carolina, Ohio, Washington, New Mexico, Idaho, California, Colorado, Georgia, Illinois, Kentucky, Missouri, Nevada, Oregon, Tennessee and Texas. The tribal membership is composed of the Confederated Tribes of the Umatilla Indian Reservation, the Isleta Pueblo, Jemez Pueblo, Navajo Nation, Nez Perce Tribe, Santa Clara Pueblo, Pueblo de San Ildefonso, Seneca Nation of Indians, Shoshone-Bannock Tribes, and the

311

LBNL Community Advisory Group  

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

Organizing Framework Organizing Framework CAG Organizing Framework The Community Advisory Group Organizing Framework is composed of three primary components: CAG Purpose and Charge CAG Member Responsibilities Operating Principles CAG Membership and Participation Download a pdf of the CAG Organizing Framework. Purpose and Charge The purpose of the LBNL Community Advisory Group (CAG) is to provide input into the Lab's physical plans and development projects. The specific charge to this group is to: Advise LBNL staff on issues related to the environmental impacts of proposed planning and development projects; Articulate key community planning and design principles to be considered in the review of individual projects as well as to guide the physical development of LBNL overall; Identify recommended strategies and actions for addressing community

312

Vertical Velocity Focus Group  

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

Velocity Focus Group Velocity Focus Group ARM 2008 Science Team Meeting Norfolk, VA March 10-14 Background Vertical velocity measurements have been at the top of the priority list of the cloud modeling community for some time. Doppler measurements from ARM profiling radars operating at 915-MHz, 35-GHz and 94-GHz have been largely unexploited. The purpose of this new focus group is to develop vertical velocity ARM products suitable for modelers. ARM response to their request has been slow. Most ARM instruments are suitable for cloud observations and have limited capabilities in precipitation Using ARM datasets for evaluating and improving cloud parameterization in global climate models (GCMs) is not straightforward, due to gigantic scale mismatches. Consider this... Looking only vertically drastically limits opportunities

313

Upgraded Coal Interest Group  

SciTech Connect (OSTI)

The Upgraded Coal Interest Group (UCIG) is an EPRI 'users group' that focuses on clean, low-cost options for coal-based power generation. The UCIG covers topics that involve (1) pre-combustion processes, (2) co-firing systems and fuels, and (3) reburn using coal-derived or biomass-derived fuels. The UCIG mission is to preserve and expand the economic use of coal for energy. By reducing the fuel costs and environmental impacts of coal-fired power generation, existing units become more cost effective and thus new units utilizing advanced combustion technologies are more likely to be coal-fired.

Evan Hughes

2009-01-08T23:59:59.000Z

314

TEC Working Group Topic Groups Rail Meeting Summaries | Department of  

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

Rail Meeting Summaries Rail Meeting Summaries TEC Working Group Topic Groups Rail Meeting Summaries MEETING SUMMARIES Kansas City TEC Meeting, Rail Topic Group Summary - July 25, 2007 Atlanta TEC Meeting, Rail Topic Group Summary - March 6, 2007 Green Bay Meeting, Rail Topic Group Summary - October 26, 2006 Washington DC TEC Meeting, Rail Topic Group Summary - March 15, 2006 Pueblo TEC Meeting, Rail Topic Group Summary - September 22, 2005 Phoenix TEC Meeting, Rail Topic Group Summary - April 4, 2005 Minneapolis TEC Meeting, Rail Topic Group Summary - September 21, 2004 Albuquerque TEC Meeting, Rail Topic Group Summary - April 22, 2004 New Orleans TEC Meeting, Rail Topic Group Summary - January 29, 2002 Jacksonville TEC Meeting, Rail Topic Group Summary - January 20, 1999 Milwaukee TEC Meeting, Rail Topic Group Summary - July 13, 1998

315

Magnetism Theory Group / POSTECH Magnetism Theory Group / POSTECH  

E-Print Network [OSTI]

Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH #12;Magnetism Theory Group / POSTECH J.H . Park et al. #12;'s of FeinCsm e tal The chargeandorbitalordering geom etryin YB a C o 2 O 5 S. K. Kwon etal .Magnetism Theory

Min, Byung Il

316

Environmental, seasonal, and social modulations of basal activity in a weakly electric fish  

Science Journals Connector (OSTI)

The electric organ discharge (EOD) of weakly electric fish encodes information about species, sex, behavioral, and physiological states throughout the lifetime. Its central command is crucial for sensory-motor coordination, and is therefore the target of plastic mechanisms that adapt fish to environmental and social challenges. The EOD waveform of Brachyhypopomus pinnicaudatus is modulated by environmental factors and the neuroendocrine system. In this study we investigate the effects of water temperature and day–night cycle upon EOD rate in this species during the breeding and non-breeding seasons. During the non-breeding season, EOD rate is a linear function of water temperature and exhibits counterclockwise hysteresis. During breeding, a thermal resistance strategy prevents the decrease of EOD rate to cooling. A nocturnal increase of EOD basal rate independent of water temperature and locomotor activity was demonstrated in isolated non-breeding adults and in male–female dyads all year round. An additional increase of nocturnal EOD rate, probably acting as a social courtship signal, was found in breeding dyads. This additional increase of nocturnal EOD rate could not be fully explained by gonadal maturation and was modulated by social stimuli. This study provides novel data on the complex interactions between environment, reproductive cycle, social behavior, and electromotor output in an advantageous model of the vertebrate central nervous system.

Ana Silva; Rossana Perrone; Omar Macadar

2007-01-01T23:59:59.000Z

317

Weak-triplet, color-octet scalars and the CDF dijet excess  

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

We extend the standard model to include a weak-triplet and color-octet scalar. This 'octo-triplet' field consists of three particles, two charged and one neutral, whose masses and renormalizable interactions depend only on two new parameters. The charged octo-triplet decay into a W boson and a gluon is suppressed by a loop factor and an accidental cancellation. Thus, the main decays of the charged octo-triplet may occur through higher-dimensional operators, mediated by a heavy vectorlike fermion, into quark pairs. For an octo-triplet mass below the tb? threshold, the decay into Wb b? through an off-shell top quark has a width comparable to that into cs? or cb?. Pair production with one octo-triplet decaying to two jets and the other decaying to a W and two soft b jets may explain the dijet-plus-W excess reported by the CDF Collaboration. The same higher-dimensional operators lead to CP violation in Bs-B?s mixing.

Dobrescu, Bogdan A.; Krnjaic, Gordan Z.

2012-04-24T23:59:59.000Z

318

TEC Working Group Topic Groups Tribal Meeting Summaries | Department of  

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

Meeting Summaries Meeting Summaries TEC Working Group Topic Groups Tribal Meeting Summaries Meeting Summaries Kansas City TEC Meeting - Tribal Group Summary - July 25, 2007 Atlanta TEC Meeting - Tribal Group Summary - March 6, 2007 Green Bay TEC Meeting -- Tribal Group Summary - October 26, 2006 Washington TEC Meeting - Tribal Topic Group Summary - March 14, 2006 Pueblo TEC Meeting - Tribal Topic Group Summary, September 22, 2005 Phoenix TEC Meeting - Tribal Topic Group Summary - April 4, 2005 Albuquerque TEC Meeting - Tribal Topic Group Presentation - April 21, 2004 New Orleans TEC Meeting - Tribal Topic Group Summary - January 29, 2002 Portland TEC Meeting, Tribal Topic Group Summary - February 6, 2001 Philadelphia TEC Meeting, Tribal Topic Group Summary - July 13, 1999

319

Star Formation in Las Campanas Compact Groups  

E-Print Network [OSTI]

Compact groups (CGs) of galaxies offer an exceptional laboratory for the study of dense galaxian environments --- where interactions, tidally induced activity, and mergers are expected to be at their highest rate of occurrence. Here, we present first results from a new catalogue of compact groups, one based upon the Las Campanas Redshift Survey (LCRS). Using the equivalent width of [OII]3727, we have studied the star formation activity in LCRS CGs: we find strong evidence of depressed star formation in CGs relative to that in loose groups or the field. Although much of this effect can be ascribed to morphological mix (CGs contain a high fraction of early-type galaxies), there is some evidence that the star formation rate in late-type galaxies is particularly deficient --- perhaps only one-half to one-third that of field spirals. We conclude that gas stripping mechanisms may play a role in CG environments.

Sahar S. Allam; Douglas L. Tucker; Huan Lin; Yasuhiro Hashimoto

1999-07-11T23:59:59.000Z

320

NERSC User Group Meeting  

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

NERSC User Group Meeting NERSC User Group Meeting Oct 18, 2010 Outline * About OpenMP * Parallel Regions * Worksharing Constructs * Synchronization * Data Scope * Tasks * Using OpenMP at NERSC 2 3 Common Architectures * Shared Memory Architecture - Multiple CPUs share global memory, could have local cache - Uniform Memory Access (UMA) - Typical Shared Memory Programming Model: OpenMP, Pthreads, ... * Distributed Memory Architecture - Each CPU has own memory - Non-Uniform Memory Access (NUMA) - Typical Message Passing Programming Model: MPI, ... * Hybrid Architecture - UMA within one SMP node - NUMA across nodes - Typical Hybrid Programming Model: mixed MPI/OpenMP, ... What is OpenMP * OpenMP is an industry standard API of C/C++ and Fortran for shared memory parallel programming.

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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Group Vision Care Policy  

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

Vision Vision Care Policy Group Name: LOS ALAMOS NATIONAL SECURITY, LLC. RETIREES Group Number: 12284390 Divisions 0005 & 0006 Effective Date: JANUARY 1, 2011 EVIDENCE OF COVERAGE Provided by: VISION SERVICE PLAN INSURANCE COMPANY 3333 Quality Drive, Rancho Cordova, CA 95670 (916) 851-5000 (800) 877-7195 EOC NM 03/02 11/25/08 CLD In addition to the information contained in this Benefit Program Summary, the LANS Health & Welfare Benefit Plan for Retirees Summary Plan Description contains important information about your LANS health and welfare benefits. For additional information: For Retirees: Customer Care Center (866) 934-1200 www.ybr.com/benefits/lanl LANL Benefits Website for Retirees: http://www.lanl.gov/worklife/benefits/retirees/

322

Fermilab Steering Group Report  

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

Fermilab Icon Fermilab Icon Photo Home About About the Steering Group Members & Contributors Fermilab and the Quantum Universe Acknowledgement Contents Contents Chapter 1 Executive Summary: A Plan for Fermilab Chapter 2 Fermilab and the Quantum Universe Chapter 3 Fermilab and the ILC Chapter 4 Physics at the Intensity Frontier Chapter 5 Facilities for the Intensity Frontier Chapter 6 Beyond the ILC and the LHC Chapter 7 A Fermilab Plan for Discovery Appendix Appendix Appendix Appendix A Steering Group charge Appendix B Fermilab and the ILC Appendix C The international neutrino program Appendix D Neutrino science with 8 GeV and 800 GeV protons Appendix E Muon-to-electron conversion in nuclei Appendix F Precision physics experiments with kaon beams Appendix G Facilities considered Appendix H Steps toward a muon collider

323

Three-dimensional theory of weakly nonlinear Compton scattering  

SciTech Connect (OSTI)

Nonlinear effects are known to occur in light sources when the wiggler parameter, or normalized 4-potential, A=e{radical}(-A{sub {mu}}A{sup {mu}})/m{sub 0}c, approaches unity. In this paper, it is shown that nonlinear spectral features can appear at arbitrarily low values of A if the fractional bandwidth of the undulator, {Delta}{phi}{sup -1}, is sufficiently small and satisfies the condition A{sup 2{Delta}{phi}{approx}}1. Consequences for the spectral brightness of Compton scattering light sources are outlined. Compton and Thomson scattering theories are compared with the Klein-Nishina cross-section formula to highlight differences in the case of narrow band gamma-ray operation. A weakly nonlinear Compton scattering theory is developed in one (plane wave) and three (local plane wave approximation) dimensions. Analytical models are presented and benchmarked against numerical calculations solving the Lorentz force equation with a fourth-order Runge-Kutta algorithm. Finally, narrow band gamma-ray spectra are calculated for realistic laser and electron beams.

Albert, F.; Anderson, S. G.; Gibson, D. J.; Marsh, R. A.; Siders, C. W.; Barty, C. P. J.; Hartemann, F. V. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2011-01-15T23:59:59.000Z

324

Weighing the Cosmological Energy Contents with Weak Gravitational Lensing  

E-Print Network [OSTI]

Bernardeau et al. (1997), using perturbation theory, showed that the skewness of the large-scale lensing-convergence, or projected mass density, could be used to constrain $\\Omega_m$, the matter content of the universe. On the other hand, deep weak-lensing field surveys in the near future will likely measure the convergence on small angular scales (energy contents, through their influence on the global geometrical distances and fluctuation growth rate. Moreover, nonlinear clustering appears to enhance the differences between predictions of the convergence skewness for a range of models. Hence, in addition to constraining $\\Omega_m$, the small-scale convergence skewness from future deep several- degree-wide surveys can be used to differentiate between curvature dominated and cosmological constant ($\\Lambda$) dominated models, as well as to constrain the equation of state of a quintessence component, thereby distinguishing $\\Lambda$ from quintessence as well. Finally, our method can be easily generalized to other measures such as aperture mass statistics.

Lam Hui

1999-02-19T23:59:59.000Z

325

Nanomaterials Chemistry Group - CSD  

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

CSD CSD Organization Contact List Search Other Links CSD CSD Organization Contact List Search Other Links Selected Research and Development Projects The Nanomaterials Chemistry Group at Chemical Sciences Division, the Oak Ridge National Laboratory conducts fundamental research related to synthesis and characterization of nanoscopic materials as well as ionic liquids for fundamental investigation of separation and catalysis processes. This group also conducts the applied research related to the applications of nanomaterials in advanced scintillators for radiation sensing, catalysts for fuel cells, radioactive tracers for medical imaging, novel electrodes for energy storage, and sensing devices for biological agents. Extensive synthesis capabilities exist within the group for preparation of mesoporous materials (oxides and carbons), low-dimensional materials (e.g., quantum dots and nanowires), sol-gel materials, inorganic and hybrid monoliths (e.g., membranes), and nanocatalysts. Solvothermal, ionothermal, templating synthesis, chemical vapor deposition (CVD), and atomic layer deposition (ALD) methods are extensively utilized in the group for tailored synthesis of nanostructured materials. An array of techniques for characterizing physical and chemical properties related to separation and catalysis are in place or are currently being developed. This research program also takes advantage of the unique resources at ORNL such as small-angle x-ray scattering, small-angle neutron scattering at the High Flux Isotope Reactor and Spallation Neutron Source (SNS), structural analysis by a variety of electron microscopes (SEM, TEM, STEM, HRTEM) and powdered X-ray diffraction (XRD) techniques. A wide variety of other facilities for routine and novel techniques are also utilized including the Center for Nanophase Materials Science. Computational chemistry tools are employed to understand experimental results related to separation and other interfacial chemical processes and design better nanomaterials and ionic liquids. Commonly used methods include first principles density functional theory (DFT) and mixed quantum mechanical/molecular mechanical (QM/MM) techniques.

326

TEC Working Group Topic Groups Archives Communications Conference...  

Office of Environmental Management (EM)

Communications Conference Call Summaries TEC Working Group Topic Groups Archives Communications Conference Call Summaries Conference Call Summaries Conference Call Summary April...

327

TEC Working Group Topic Groups Routing Conference Call Summaries...  

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

Routing Conference Call Summaries TEC Working Group Topic Groups Routing Conference Call Summaries CONFERENCE CALL SUMMARIES January 31, 2008 December 6, 2007 October 4, 2007...

328

TEC Working Group Topic Groups Security Conference Call Summaries...  

Office of Environmental Management (EM)

Security Conference Call Summaries TEC Working Group Topic Groups Security Conference Call Summaries Conference Call Summaries August 17, 2006 (Draft) July 18, 2006 (Draft) June...

329

TEC Working Group Topic Groups Archives Protocols Conference...  

Office of Environmental Management (EM)

Conference Call Summaries TEC Working Group Topic Groups Archives Protocols Conference Call Summaries Conference Call Summaries May 13, 1999 April 8, 1999 March 1, 1999 More...

330

TEC Working Group Topic Groups Security Meeting Summaries | Department...  

Office of Environmental Management (EM)

Summaries TEC Working Group Topic Groups Security Meeting Summaries Meeting Summaries Green Bay STG Meeting Summary- September 14, 2006 Washington STG Meeting Summary - March 14,...

331

UMBC Research Group Update  

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

balloon-borne balloon-borne aerosol profiling system: Applications in China Zahra Chaudhry, J. Vanderlei Martins, Zhanqing Li, Si-Chee Tsay, Qiang Ji, Tianxue Wen, Wu Zhang DOE ARM Science Team Meeting April 2 nd , 2009 Outline * Briefly discuss why we built this instrument * Show schematics of instrument design * Validation via Intercomparison * Experimental Plan * Results Motivation * Aerosol optical and physical properties are highly variable both in time and space, and more accurate information is needed. * Aerosols form mixtures as different types interact. These mixtures take on different optical properties than those of the originating species. * Current commercially-available instruments for optical property measurements have inherent biases and involve considerable corrections

332

Atmospheric Pressure Weakly Ionized Plasma Reactor Based on the Corona Discharge .  

E-Print Network [OSTI]

??Atmospheric pressure weakly ionized plasma (APWIP) is being used to treat or process goods and materials because it only activates the surface without modification of… (more)

[No author

2012-01-01T23:59:59.000Z

333

Testosterone modulates female chirping behavior in the weakly electric fish, Apteronotus leptorhynchus  

Science Journals Connector (OSTI)

The weakly electric fish, Apteronotus leptorhynchus..., produces a wave-like electric organ discharge (EOD) utilized for electrolocation and communication. Both ... by emitting “chirps”: transient increases in EOD

J. G. Dulka; L. Maler

1994-03-01T23:59:59.000Z

335

Westly Group | Open Energy Information  

Open Energy Info (EERE)

navigation, search Name: Westly Group Place: Menlo Park, California Zip: 94025 Product: Clean technology-oriented venture capital firm. References: Westly Group1 This article...

336

Enovos Group | Open Energy Information  

Open Energy Info (EERE)

Enovos Group Jump to: navigation, search Name: Enovos Group Place: Germany Sector: Solar Product: Germany-based utility. The utility has interests in solar energy. References:...

337

Schaeffler Group | Open Energy Information  

Open Energy Info (EERE)

Schaeffler Group Jump to: navigation, search Name: Schaeffler Group Place: Germany Product: A manufacturer of rolling bearings and linear products worldwide as well as a renowned...

338

Zeppini Group | Open Energy Information  

Open Energy Info (EERE)

Zeppini Group Place: Brazil Product: Brazilian firm that sells PV applications for homes, industry and business. References: Zeppini Group1 This article is a stub. You can...

339

Focus Group | Department of Energy  

Energy Savers [EERE]

Focus Group Meeting (Activities Status) Meeting agenda, summary and 2011 Directives Reform Status Meeting Date: May 19, 2011 January 20, 2011 Focus Group Meeting (Activities...

340

Symmetric Categories as a Means of Virtualization for Braid Groups and Racks  

E-Print Network [OSTI]

Symmetric Categories as a Means of Virtualization for Braid Groups and Racks Victoria LEBED lebed" approach provides a natural interpretation for virtual racks and twisted Burau representation. Homology of categorical SDS is defined via weakly simplicial objects, generalizing rack, bar and Leibniz differ- entials

Note: This page contains sample records for the topic "group weak interactions" 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

Electric organ discharge patterns during group hunting by a mormyrid fish  

E-Print Network [OSTI]

Electric organ discharge patterns during group hunting by a mormyrid fish Matthew E. Arnegard1 Department of Biology, University of Virginia, Charlottesville, VA 22904, USA Weakly electric fish emit and receive low-voltage electric organ discharges (EODs) for electrolocation and communication. Since

Hopkins, Carl D.

342

BUOYANCY INSTABILITIES IN A WEAKLY COLLISIONAL INTRACLUSTER MEDIUM  

SciTech Connect (OSTI)

The intracluster medium (ICM) of galaxy clusters is a weakly collisional plasma in which the transport of heat and momentum occurs primarily along magnetic-field lines. Anisotropic heat conduction allows convective instabilities to be driven by temperature gradients of either sign: the magnetothermal instability (MTI) in the outskirts of clusters and the heat-flux buoyancy-driven instability (HBI) in their cooling cores. We employ the Athena magnetohydrodynamic code to investigate the nonlinear evolution of these instabilities, self-consistently including the effects of anisotropic viscosity (i.e., Braginskii pressure anisotropy), anisotropic conduction, and radiative cooling. We find that, in all but the innermost regions of cool-core clusters, anisotropic viscosity significantly impairs the ability of the HBI to reorient magnetic-field lines orthogonal to the temperature gradient. Thus, while radio-mode feedback appears necessary in the central few Multiplication-Sign 10 kpc, heat conduction may be capable of offsetting radiative losses throughout most of a cool core over a significant fraction of the Hubble time. Magnetically aligned cold filaments are then able to form by local thermal instability. Viscous dissipation during cold filament formation produces accompanying hot filaments, which can be searched for in deep Chandra observations of cool-core clusters. In the case of MTI, anisotropic viscosity leads to a nonlinear state with a folded magnetic field structure in which field-line curvature and field strength are anti-correlated. These results demonstrate that, if the HBI and MTI are relevant for shaping the properties of the ICM, one must self-consistently include anisotropic viscosity in order to obtain even qualitatively correct results.

Kunz, Matthew W.; Stone, James M. [Department of Astrophysical Sciences, Princeton University, Peyton Hall, 4 Ivy Lane, Princeton, NJ 08544 (United States); Bogdanovic, Tamara; Reynolds, Christopher S., E-mail: kunz@astro.princeton.edu, E-mail: jstone@astro.princeton.edu, E-mail: tamarab@astro.umd.edu, E-mail: chris@astro.umd.edu [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States)

2012-08-01T23:59:59.000Z

343

A weakly nonlocal anisotropic fluid model for inhomogeneous Stokesian suspensions  

Science Journals Connector (OSTI)

A continuum model is proposed for a weakly inhomogeneous Stokesian suspensions as an extension with minor amendments of a previous work on homogeneous suspensions [J. D. Goddard J. Fluid Mech.568 1 (2006)]. In the present model stress and particle flux are given as invariant tensor functions of particle volume fraction ? deformation rate E and second-rank anisotropytensor A in a form that is also linear in E and the gradients of ? E and A . In contrast to models without history dependence all nonlinear dependence of particle flux on E arises from the evolution of A . Detailed attention is paid to unsteady viscometric flow where a contribution of streamline curvature to particle migration emerges as a natural consequence of tensorial gradients. The model predicts equal curvature-induced fluxes in gradient and vorticity directions but there is an unexplained disagreement with recent experiments on Couette and torsional flows. A previously proposed corotational evolution equation for A with a two-mode exponential relaxation is employed to investigate the transient response following the reversal of shearing in sinusoidal and in steady shear. The model predicts roughly equal response for the two flows if sinusoidal strains are of order unity which is consistent with some but not all experiments. The model for particle flux admits an asymmetric diffusiontensor which owing to Stokesian reversibility can become nonpositive upon abrupt reversal of shearing. This effect is diminished by non-Stokesian response on short strain scales which although poorly understood appears essential to elementary models without dependence on shear history. A synthesis is given of multipolar Stokesian resistance and the associated Stokesian dynamics showing how these follow from a single grand resistance kernel. In addition to unifying and extending large literature on Stokesian resistance formulae this provides some justification for the proposed continuum model and possible multipolar extensions.

J. D. Goddard

2008-01-01T23:59:59.000Z

344

Advanced Concepts Breakout Group  

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

Workshop Workshop Advanced Concepts Working Group Facilitator: John J. Petrovic Scribe: Sherry Marin Advanced Storage Techniques/ Approaches in Priority Order 1. Crystalline Nanoporous Materials (15) 2. Polymer Microspheres (12) Self-Assembled Nanocomposites (12) 3. Advanced Hydrides (11) Metals - Organic (11) 4. BN Nanotubes (5) Hydrogenated Amorphous Carbon (5) 5. Mesoporous materials (4) Bulk Amorphous Materials (BAMs) (4) 6. Iron Hydrolysis (3) 7. Nanosize powders (2) 8. Metallic Hydrogen (1) Hydride Alcoholysis (1) Overarching R&D Questions for All Advanced Materials * Maximum storage capacity - theoretical model * Energy balance / life cycle analysis * Hydrogen absorption / desorption kinetics * Preliminary cost analysis - potential for low cost, high

345

SPPR Group Proposal  

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

Proposal Proposal June 23, 2010 Agenda Purpose of Meeting Presenters Background Information  Three Terminal Plan & Market Access  Business Case  Transmission Infrastructure Program ED5-Palo Verde Project Potential Rate Impacts Discussion / Comments 2 Purpose of Meeting Provide background information Share the SPPR Group's current proposal and how it might affect Parker-Davis Project (P-DP) customers Obtain your feedback on the proposal 3 Presenters Background Information - Todd Rhoades ED5-PV Project Description - Todd Rhoades Project Marketability - John Steward Project Cost & Financing - Jack Murray Potential Rate Impacts - Jack Murray Next Steps - Todd Rhoades 4 Three Terminal Plan November 2009 5 Business Case

346

TEC Working Group Topic Groups | Department of Energy  

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

Topic Groups Topic Groups TEC Working Group Topic Groups TEC Topic Groups were formed in 1991 following an evaluation of the TEC program. Interested members, DOE and other federal agency staff meet to examine specific issues related to radioactive materials transportation. TEC Topic Groups enable a small number of participants to focus intensively on key issues at a level of detail that is unattainable during the TEC semiannual meetings due to time and group size constraints. Topic Groups meet individually by phone and email between TEC's semiannual general meetings, participate in conference calls and report back to the Department and TEC members. The Topic Groups are intended to work on significant issues, produce a relevant product and sunset the group when the work is

347

HSS Focus Group Training Work Group Meeting | Department of Energy  

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

HSS Focus Group Training Work Group Meeting HSS Focus Group Training Work Group Meeting HSS Focus Group Training Work Group Meeting Meeting Dates: July 10 - 11 The Department of Energy (DOE) Office of Health, Safety and Security (HSS) Focus Group Training Work Group met at the DOE National Training Center (NTC) inAlbuquerque, NM on Tuesday, July 10 and Wednesday, July 11, 2012. The meeting was chaired by the Work Group co-chairs, Karen Boardman (HSS/NTC),Pete Stafford (AFL-CIO BCTD/CPWR), and Julie Johnston (EFCOG). Attachment 1 is the Meeting Agenda; Attachment 2 is a list of meeting attendees; and Attachment3 is the proposed Radworker Training Reciprocity Program. Meeting Agenda Meeting Summary Draft RAD Worker Training Reciprocity Program for Work Group v.1 Draft Radiation Worker Portability Validation

348

Developing marketing strategies for a travel destination in the USA using the nominal group technique  

Science Journals Connector (OSTI)

This paper demonstrates the application of nominal grouping as a cost-effective qualitative alternative for developing marketing strategies. The nominal group technique was used to generate strategic directions for the Blue Ridge Parkway Association, a popular travel destination in the USA. Using a nominal group composed of industry experts, a SWOT analysis produced a list of strengths, weaknesses, opportunities and threats associated with the Blue Ridge Parkway. Next, potential market segments were identified and prioritised. Five marketing strategies emerged to reach the specified market segments. The study illustrates that the nominal group technique offers a cost and time-efficient qualitative alternative in making strategic decisions.

J. Dana Clark; Michael J. Dotson; Dinesh S. Dave

2010-01-01T23:59:59.000Z

349

Lighting Group: People  

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

People People Lighting Group Staff Phone Mailstop Email Group Leader [area code 510] Rubinstein, Francis 486-4096 90R3111 FMRubinstein@lbl.gov Staff Scientists Berman, Sam 5682 90R3111 Clear, Robert 486-4286 90R3111 RDClear@lbl.gov Research Associates Enscoe, Abby (510) 486 6077 90R3111 AIEnscoe@lbl.gov Fritz, Randolph M. (510) 495 2532 90R3111 RFritz@lbl.gov Ghatikar, Girish 486-6768 90R3111 GGhatikar@lbl.gov Granderson, Jessica 486-7692 90R3111 JGranderson@lbl.gov Howells, Jack 4096 46R0125 MRHowells@lbl.gov Kiliccote, Sila 495-2615 90R3111 SKiliccote@lbl.gov Liu, Gao 7207 70R0108B GLiu@lbl.gov Wen, Yao-Jung 4702 90R3111 YJWen@lbl.gov Yazdanian, Mehry 486-4701 90R3111 MYazdanian@lbl.gov Research Technicians Galvin, James 486-4661 47R0112 JEGalvin@lbl.gov Technical Support DiBartolomeo, Dennis 486-4702 90R3111

350

Superconductivity from Predominantly Repulsive Interactions in Quasi One-Dimensional Systems  

Science Journals Connector (OSTI)

We show that for a one-dimensional electron gas with strong repulsive electron-electron interactions and a weak retarded attractive interaction, superconducting fluctuations can occur at high temperatures. The dominant driving force for these fluctuations is the repulsive interactions! Although the results are for a one-dimensional model, a strong analogy exists between our results and the short-ranged resonating-valence-bond picture of superconductivity.

G. T. Zimanyi; S. A. Kivelson; A. Luther

1988-05-16T23:59:59.000Z

351

September 8, 2011, HSS/Union Focus Group Work Group Telecom - Work Group Charter  

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

Office of Health, Safety and Security Focus Group [Name of Work Group] Work Group Charter (Date) I. PURPOSE The HSS Focus Group [Name of Work Group] is one of several HSS Work Groups, established to address worker health, safety and security programs improvements across the U.S. Department of Energy Complex. The [Name of Work Group] has been established to (state specific purpose). II. OBJECTIVES (State the desired impact(s) and major outcome(s) for, the Work Group) 1. Establish specific improvement goals, intended outputs and supporting activities that respond to identified worker health and safety improvement needs. 2. Establish measurable indicators when possible to support findings, recommendations and accomplishments.

352

Data Plots of Run I - III Results from SLAC E-158: A precision Measurement of the Weak Mixing Angle in Moller Scattering  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Three physics runs were made in 2002 and 2003 by E-158. As a result, the E-158 Collaboration announced that it had made "the first observation of Parity Violation in electron-electron (Moller) scattering). This precise Parity Violation measurement gives the best determination of the electron's weak charge at low energy (low momentum transfer between interacting particles). E158's measurement tests the predicted running (or evolution) of this weak charge with energy, and searches for new phenomena at TeV energy scales (one thousand times the proton-mass energy scale).[Copied from the experiment's public home page at http://www-project slac.stanford.edu/3158/Default.htm] See also the E158 page for collaborators at http://www.slac.stanford.edu/exp/e158/. Both websites provide data and detailed information.

353

Neutron scattering and extra short range interactions  

E-Print Network [OSTI]

The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5 nm. This distance range occupies an intermediate space between collider searches for strongly coupled heavy bosons and searches for new weak macroscopic forces. We emphasise the reliability of the neutron constraints in so far as they provide several independent strategies. We have identified the most promising way to improve them.

V. V. Nesvizhevsky; G. Pignol; K. V. Protasov

2007-11-14T23:59:59.000Z

354

Data Management Group Annual Report  

E-Print Network [OSTI]

Data Management Group Annual Report 2002 prepared by: Data Management Group Joint Program......................................................................................... 9 2001 EMME/2 Road Network Inclusion of Links to CCDRS .................. 9 Road and Transit Management Group 2002 Annual Report i SUMMARY The Data Management Group (DMG), in cooperation

Toronto, University of

355

High Temperature Membrane Working Group  

Broader source: Energy.gov [DOE]

This presentation provides an overview of the High Temperature Membrane Working Group Meeting in May 2007.

356

Digital Technology Group Computer Laboratory  

E-Print Network [OSTI]

Digital Technology Group 1/20 Computer Laboratory Digital Technology Group Computer Laboratory William R Carson Building on the presentation by Francisco Monteiro Matlab #12;Digital Technology Group 2/20 Computer Laboratory Digital Technology Group Computer Laboratory The product: MATLAB® - The Language

Cambridge, University of

357

Validity of the Weakly Nonlinear Solution of the Cauchy Problem for the Boussinesq-Type Equation  

E-Print Network [OSTI]

Validity of the Weakly Nonlinear Solution of the Cauchy Problem for the Boussinesq-Type Equation for the regularized Boussinesq-type equation in the class of periodic functions. Validity of the weakly nonlinear in the formal asymptotic theory. Wayne and Wright [7] extended this analysis to the regularized Boussinesq

Pelinovsky, Dmitry

358

Born integral, stationary phase and linearized reflection coefficients in weak anisotropic media  

Science Journals Connector (OSTI)

......and a weak but arbitrarily anisotropic medium underlying an isotropic...in determining the weakly anisotropic parameters through an analysis...fluids, thin layers of shale, etc. often cause an otherwise...seismic wave propagation through anisotropic media. The most common anisotropic......

Ranjit K. Shaw; Mrinal K. Sen

2004-07-01T23:59:59.000Z

359

Magnetic reconnection in weakly collisional highly magnetized electron-ion plasmas  

E-Print Network [OSTI]

Magnetic reconnection in weakly collisional highly magnetized electron-ion plasmas Richard three-field model of two-dimensional magnetic reconnection in a weakly collisional, highly magnetized.1063/1.3374427 I. INTRODUCTION Magnetic reconnection is a fundamental physical phe- nomenon which occurs

Fitzpatrick, Richard

360

INTRODUCTION The electric sense of mormyrid weakly electric fish is generally  

E-Print Network [OSTI]

921 INTRODUCTION The electric sense of mormyrid weakly electric fish is generally regarded to be the dominant sense for orientation and communication in these animals. Weakly electric fish explore their environment by the aid of active electrolocation. They generate electric fields and analyze the distortions

Grant, Kirsty

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Per-Unit Royalty vs Fixed Fee: The Case of Weak Patents  

E-Print Network [OSTI]

Per-Unit Royalty vs Fixed Fee: The Case of Weak Patents Rabah Amiry David Encaouaz Yassine a per-unit royalty or a ...xed fee when her innovation is covered by a weak patent, i.e. a patent of competition is not speci...ed, we show that the patent holder prefers to use a per-unit royalty scheme

Paris-Sud XI, Université de

362

PHYSICAL REVIEW E 88, 052140 (2013) Transport in weak dynamic disorder: A unified theory  

E-Print Network [OSTI]

. Based on Wigner representation, we obtain the radiative transfer equation (a linear Boltzmann equationPHYSICAL REVIEW E 88, 052140 (2013) Transport in weak dynamic disorder: A unified theory Bin Min the transport. In this article, we study the transport behavior of a quantum particle in weak dynamic disorder

Li, Tiejun

363

A free plate surface and weak oceanic crust produce single-sided subduction on Earth  

E-Print Network [OSTI]

A free plate surface and weak oceanic crust produce single-sided subduction on Earth F. Crameri,1 P features of terrestrial plates: (1) the presence of a free deformable upper surface and (2) the presence of weak hydrated crust atop subducting slabs. We show that assuming a free surface, rather than

Kaus, Boris

364

RESONANCE ABSORPTION OF AN ULTRASONIC WAVE IN A WEAKLY ASSOCIATED LIQUID A.V. Narasimham  

E-Print Network [OSTI]

RESONANCE ABSORPTION OF AN ULTRASONIC WAVE IN A WEAKLY ASSOCIATED LIQUID A.V. Narasimham department for absorption and dispersion of an ultrasonic wave in a weakly associated liquid, taking into account resonance absorption of the wave. The state of the liquid has been described by a distribution function. The effect

Boyer, Edmond

365

Fermilab Steering Group Report  

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

5 5 Facilities for the Intensity Frontier In This Section: Facilities for the Intensity Frontier SuperNuMI (SNuMI) Project X Existing rings Project X and the ILC Project X and longer term facilities Summary Facilities for the Intensity Frontier The Steering Group considered a variety of accelerator facilities and programs using the following criteria: Support for physics research goals, effective use of accelerator assets freed up at the end of Tevatron operations, Alignment with the ILC R&D program, Potential for achievement over the next decade. Twelve facilities received consideration using some or all of these criteria. Appendix G sorts those facilities not described in this chapter based on relevance to proton- or electron-based programs. This chapter describes the facilities that would support neutrino science and precision physics at the intensity frontier. The facilities include an intense proton source and its injection to the existing rings at Fermilab for a variety of programs.

366

# Energy Measuremenfs Group  

Office of Legacy Management (LM)

ri EECE ri EECE # Energy Measuremenfs Group SUMMARY REPORT . AiRIAL R4DIOLOGICAL SURVEY - NIAGARA FALLS AREA NIAGARA FALLS, NEh' YORK DATE OF SURVEY: SEPTEMBER 1979 APPROVED FOR DISTRIBUTION: P Stuart, EC&G, Inc. . . Herbirt F. Hahn, Department of Energy PERFDRflED BY EGtf, INC. UNDER CONTRACT NO. DE-AHO&76NV01163 WITH THE UNITED STATES DEPARTMENT OF ENERGY II'AFID 010 November 30, 1979 - The Aerial Measurements System (A%), operated by EC&t, Inc< for the Un i ted States Department of Energy, was used during November 1976 to conduct an exploratory aerial radiological survey in-the greater Niagara Fails area. The purpose of that survey was to identify locations having concentrations of terrestrial radioactivity not typical of the radiation

367

Particle Data Group  

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

About PDG About PDG About the PDG PDG authors Order PDG products PDG citation Encoder tools Job at LBNL Contact Us Downloads Resources Errata Archives Atomic Nuclear Properties Online HEP Info Non-PDG Databases Durham-RAL databases Current experiments Guide to Data Partial-wave analyses Contact Us News The "Reviews, Tables, Plots" section has been updated. The next book edition is due in early summer 2014, and the booklet in late summer 2014. Funded By: US DOE US NSF CERN MEXT (Japan) INFN (Italy) MEC (Spain) IHEP & RFBR (Russia) Mirrors: USA (LBNL) Brazil CERN Indonesia Italy Japan (KEK) Russia (Novosibirsk) Russia (Protvino) UK (Durham) The Review of Particle Physics J. Beringer et al. (Particle Data Group), Phys. Rev. D86, 010001 (2012) and 2013 partial update for the 2014 edition.

368

Particle Data Group - Authors  

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

6 Edition and 2007 Web Update 6 Edition and 2007 Web Update (Click on Author Name to get Email address, phone numbers, etc.) RPP authors New authors of 2007 Web Update M. Antonelli, 102 H. Baer, 64 G. Bernardi, 103 M. Carena, 51 M.-C. Chen, 11 B. Dobrescu, 51 J.-F. Grivaz, 104 T. Gutsche, 105 J. Huston, 45 T. Junk, 51 C.-J. Lin, 1 H. Mahlke, 106 P. Mohr, 107 P. Nevski, 75 S. Rolli, 108 A. Romaniouk, 109 B. Seligman, 110 M. Shaevitz, 111 B. Taylor, 107 M. Titov, 56,112 G. Weiglein, 78 A. Wheeler, 69 Authors of the 2006 Review of Particle Physics W.-M. Yao et al. (Particle Data Group), J. Phys. G 33, 1 (2006) (bibtex format) Also see: PS format or PDF format. AUTHORS OF LISTINGS AND REVIEWS: (Click on Author Name to get Email address, phone numbers, etc.) RPP authors (RPP 2006)

369

Working Group Reports  

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

5 5 Working Group Reports Special Working Session on the Role of Buoy Observations in the Tropical Western Pacific Measurement Scheme J. Downing Marine Sciences Laboratory Sequim, Washington R. M. Reynolds Brookhaven National Laboratory Upton, New York Attending W. Clements (TWPPO) F. Barnes (TWPPO) T. Ackerman (TWP Site Scientist) M. Ivey (ARCS Manager) H. Church J. Curry J. del Corral B. DeRoos S. Kinne J. Mather J. Michalsky M. Miller P. Minnett B. Porch J. Sheaffer P. Webster M. Wesely K. Zorika G. Zhang Focus of Discussion The session convened on March 2, with brief introductions by Bill Clements. The purpose of the session was to discuss the scientific merits of retrofitting TOGA/TAO buoys with shortwave radiometers. Three questions were posed at the outset of the session to focus the discussion.

370

future science group  

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

61 61 ISSN 1759-7269 10.4155/BFS.11.150 © 2012 Future Science Ltd In 1950 Reese et al. proposed a mechanism for cel- lulose hydrolysis, which involved two general com- ponents, C 1 and C x , acting in sequence [1]. According to the model, the C 1 component first disrupted and swelled the crystalline cellulose, possibly releasing soluble oligo saccharides into solution. The C x compo- nent, which was shown to have endoglucanase activity, was then able to effectively hydrolyze the previously inaccessible substrate along with the soluble oligo- saccharides. Furthermore, the activity of the mixture was found to be higher than the activity of each com- ponent acting alone, indicating that the components were acting synergistically. In the following years, a number of groups began to identify and characterize

371

Lighting Group: Software  

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

Software Software Lighting Software The Lighting Group has developed several computer programs in the course of conducting research on energy efficient lighting. Several of these programs have proven useful outside the research environment. One of the most popular programs for advanced lighting applications is Radiance. For more information on this program and its availability, click on the link below. RADIANCE Radiance is a suite of programs for the analysis and visualization of lighting in design. The primary advantage of Radiance over simpler lighting calculation and rendering tools is that there are no limitations on the geometry or the materials that may be simulated. Radiance is used by architects and engineers to predict illumination, visual quality and appearance of innovative design spaces, and by researchers to evaluate new

372

Working Group Report: Sensors  

SciTech Connect (OSTI)

Sensors play a key role in detecting both charged particles and photons for all three frontiers in Particle Physics. The signals from an individual sensor that can be used include ionization deposited, phonons created, or light emitted from excitations of the material. The individual sensors are then typically arrayed for detection of individual particles or groups of particles. Mounting of new, ever higher performance experiments, often depend on advances in sensors in a range of performance characteristics. These performance metrics can include position resolution for passing particles, time resolution on particles impacting the sensor, and overall rate capabilities. In addition the feasible detector area and cost frequently provides a limit to what can be built and therefore is often another area where improvements are important. Finally, radiation tolerance is becoming a requirement in a broad array of devices. We present a status report on a broad category of sensors, including challenges for the future and work in progress to solve those challenges.

Artuso, M.; et al.,

2013-10-18T23:59:59.000Z

373

Particle Data Group - Authors  

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

Particle Data Group Associates and Advisors Particle Data Group Associates and Advisors Aguilar-Benitez, Amsler, Antonelli, Arguin, Armstrong, Artuso, Asner, Babu, Baer, Band, Barberio, Barnett, Battaglia, Bauer, Beringer, Bernardi, Bertl, Besson, Bichsel, Biebel, Bloch, Blucher, Blusk, Bunakov, Burchat, Cahn, Carena, Carone, Casas Serradilla, Casper, Cattai, Ceccucci, Chakraborty, Chen, Chivukula, Copic, Cousins, Cowan, Crawford, Dahl, Dalitz, D'Ambrosio, DeGouvea, DeGrand, Damour, Desler, Dissertori, Dobbs, Dobrescu, Donahue, Doser, Drees, Edwards,A, Edwards, Eidelman, Elvira, Erler, Ezhela, Fasso', Feng, Fetscher, Fields, Filimonov, Foster, Freedman, Froidevaux, Fukugita, Gaisser, Garren, Geer, Gerber, Gerbier, Gherghetta, Gibbons, Gilman, Giudice, Goldhaber, Goodman, Grab, Gritsan, Grivaz, Groom, Grünewald, Gurtu, Gutsche, Haber, Hagiwara, Hagmann, Hanhart, Harper , Hayes, Heltsley, Hernàndez-Rey, Hewett, Hikasa, Hinchliffe, Holder, Höcker, Hogan, Höhler, Holtkamp, Honscheid , Huston , Igo-Kemenes, Jackson, James, Jawahery, Johnson, Junk, Karlen, Kayser, Kirkby, Klein, Kleinknecht, Klempt, Knowles, Kolb, Kolda, Kowalewski, Kreitz, Kreps, Krusche, Kuyanov, Kwon, Lahav, Landua, Langacker , Lepage, Liddle, Ligeti, Lin, Liss, Littenberg, Liu, LoSecco, Lugovsky,K, Lugovsky,S, Lugovsky,V, Lynch, Lys, Mahlke, Mangano, Mankov, Manley, Mannel, Manohar, March-Russell, Marciano, Martin, Masoni, Matthews, Milstead, Miquel, Mönig, Mohr, Morrison, Murayama, Nakada, Nakamura, Narain, Nason, Navas, Nevski, Nicholson, Nir, Olive, Oyanagi, Pape, Patrignani, Peacock, Piepke, Porter, Prell, Punzi, Quadt, Quinn, Raby, Raffelt, Ratcliff, Razuvaev, Renk, Richardson, Roesler, Rolandi, Rolli, Romaniouk , Roos, Rosenberg, Rosner, Sachrajda, Sakai, Salam, Sanda, Sarkar, Sauli, Schaffner, Schindler, Schmitt, Schneider, Scott, Seligman, Shaevitz, Shrock, Silari, Skands, Smith, Sjöstrand, Smoot, Sokolosky, Spanier, Spieler, Spooner, Srednicki, Stahl, Stanev, Stone, Stone,S, Streitmatter, Sumiyoshi, Suzuki, Syphers, Tanabashi, Taylor, Terning, Titov, Tkachenko, Törnqvist, Tovey, Trilling, Trippe, Turner, Valencia, van Bibber, Vincter, Venanzoni, Vogel, Voss, Ward, Watari, Webber, Weiglein, Wells, Whalley, Wheeler, Wohl, Wolfenstein, Womersley, Woody, Workman, Yamamoto, Yao, Youssef, Zenin, Zhang, Zhu, Zyla

374

Fermilab Steering Group Report  

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

1 1 Executive Summary: A Plan for Fermilab In This Section: Executive Summary: A Plan for Fermilab Guidelines The Steering Group's proposed plan Executive Summary: A Plan for Fermilab The Fermilab Steering Group has developed a plan to keep U.S. accelerator-based particle physics on the pathway to discovery, both at the Terascale with the LHC and the ILC and in the domain of neutrinos and precision physics with a high-intensity accelerator. The plan puts discovering Terascale physics with the LHC and the ILC as Fermilab's highest priority. While supporting ILC development, the plan creates opportunities for exciting science at the intensity frontier. If the ILC remains near the Global Design effort's technically driven timeline, Fermilab would continue neutrino science with the NOνA experiment, using the NuMI (Neutrinos at the Main Injector) proton plan, scheduled to begin operating in 2011. If ILC construction must wait somewhat longer, Fermilab's plan proposes SNuMI, an upgrade of NuMI to create a more powerful neutrino beam. If the ILC start is postponed significantly, a central feature of the proposed Fermilab plan calls for building an intense proton facility, Project X, consisting of a linear accelerator with the currently planned characteristics of the ILC combined with Fermilab's existing Recycler Ring and the Main Injector accelerator. The major component of Project X is the linac. Cryomodules, radio-frequency distribution, cryogenics and instrumentation for the linac are the same as or similar to those used in the ILC at a scale of about one percent of a full ILC linac.

375

Extension of the weak-line approximation and application to correlated-k methods  

SciTech Connect (OSTI)

Global climate models require accurate and rapid computation of the radiative transfer through the atmosphere. Correlated-k methods are often used. One of the approximations used in correlated-k models is the weakline approximation. We introduce an approximation T/sub g/ which reduces to the weak-line limit when optical depths are small, and captures the deviation from the weak-line limit as the extinction deviates from the weak-line limit. This approximation is constructed to match the first two moments of the gamma distribution to the k-distribution of the transmission. We compare the errors of the weak-line approximation with T/sub g/ in the context of a water vapor spectrum. The extension T/sub g/ is more accurate and converges more rapidly than the weak-line approximation.

Conley, A.J.; Collins, W.D.

2011-03-15T23:59:59.000Z

376

Optically detected nuclear quadrupolar interaction of 14N in nitrogen-vacancy centers in diamond  

E-Print Network [OSTI]

We report sensitive detection of the nuclear quadrupolar interaction of the 14N nuclear spin of the nitrogen-vacancy (NV) center using the electron spin echo envelope modulation technique. We applied a weak transverse magnetic field to the spin system so that certain forbidden transitions became weakly allowed due to second-order effects involving the nonsecular terms of the hyperfine interaction. The weak transitions cause modulation of the electron spin-echo signal, and a theoretical analysis suggests that the modulation frequency is primarily determined by the nuclear quadrupolar frequency; numerical simulations confirm the analytical results and show excellent quantitative agreement with experiments. This is an experimentally simple method of detecting quadrupolar interactions, and it can be used to study spin systems with an energy structure similar to that of the nitrogen vacancy center.

Chang S. Shin; Mark C. Butler; Hai-Jing Wang; Claudia E. Avalos; Scott J. Seltzer; Ren-Bao Liu; Alexander Pines; Vikram S. Bajaj

2014-05-01T23:59:59.000Z

377

Effect of electromagnetic radiation on an array of weakly interacting carbon nanotubes in the presence of nanosecond pulses  

SciTech Connect (OSTI)

For metallic 'zigzag'-type carbon nanotubes, the dependence of a nonlinear current on an ac electric field with an inclined-leading-edge width of {Delta}T = 3 Multiplication-Sign 10{sup -11} s and wavelength of {lambda} Almost-Equal-To 1 mm is studied. It is theoretically and numerically shown that the surface current is almost independent of the nanotube radius. In the case of semiconductor zigzag-type nanotubes, the radiation of a two-frequency CO{sub 2} laser with a constant amplitude is considered as an ac electric field. The dependence on the relaxation time in the Boltzmann kinetic equation is studied. The optimal conditions for terahertz-radiation generation are achieved when the relaxation time is 40 fs. It is numerically found that the amplified radiation amplitude behaves as beats.

Sadykov, N. R., E-mail: n.r.sadykov@rambler.ru; Scorkin, N. A.; Akhljustina, E. A. [Snezhinsk Physics and Technology Institute of the National Research Nuclear University 'MEPhI' (Russian Federation)] [Snezhinsk Physics and Technology Institute of the National Research Nuclear University 'MEPhI' (Russian Federation)

2013-09-15T23:59:59.000Z

378

PHYSICAL REVIEW B 86, 205302 (2012) Weak antilocalization and disorder-enhanced electron interactions in annealed films  

E-Print Network [OSTI]

November 2012) Phase-change materials can be reversibly switched between amorphous and crystalline states study electrical transport in thin metallic films of the disordered, crystalline phase-change material, which is exploited in rewritable optical data storage.1 Phase- change materials are also attractive

Palevski, Alexander

379

Non-linear relativistic contributions to the cosmological weak-lensing convergence  

E-Print Network [OSTI]

Relativistic contributions to the dynamics of structure formation come in a variety of forms, and can potentially give corrections to the standard picture on typical scales of 100 Mpc. These corrections cannot be obtained by Newtonian numerical simulations, so it is important to accurately estimate the magnitude of these relativistic effects. Density fluctuations couple to produce a background of gravitational waves, which is larger than any primordial background. A similar interaction produces a much larger spectrum of vector modes which represent the frame-dragging rotation of spacetime. These can change the metric at the percent level in the concordance model at scales below the equality scale. Vector modes modify the lensing of background galaxies by large-scale structure. This gives in principle the exciting possibility of measuring relativistic frame dragging effects on cosmological scales. The effects of the non-linear tensor and vector modes on the cosmic convergence are computed and compared to first-order lensing contributions from density fluctuations, Doppler lensing, and smaller Sachs-Wolfe effects. The lensing from gravitational waves is negligible so we concentrate on the vector modes. We show the relative importance of this for future surveys such as Euclid and SKA. We find that these non-linear effects only marginally affect the overall weak lensing signal so they can safely be neglected in most analyses, though are still much larger than the linear Sachs-Wolfe terms. The second-order vector contribution can dominate the first-order Doppler lensing term at moderate redshifts and are actually more important for survey geometries like the SKA.

Sambatra Andrianomena; Chris Clarkson; Prina Patel; Obinna Umeh; Jean-Philippe Uzan

2014-02-18T23:59:59.000Z

380

HSS Focus Group Training Work Group Meeting | Department of Energy  

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

Training Work Group Meeting Training Work Group Meeting HSS Focus Group Training Work Group Meeting Meeting Dates: July 10 - 11 The Department of Energy (DOE) Office of Health, Safety and Security (HSS) Focus Group Training Work Group met at the DOE National Training Center (NTC) inAlbuquerque, NM on Tuesday, July 10 and Wednesday, July 11, 2012. The meeting was chaired by the Work Group co-chairs, Karen Boardman (HSS/NTC),Pete Stafford (AFL-CIO BCTD/CPWR), and Julie Johnston (EFCOG). Attachment 1 is the Meeting Agenda; Attachment 2 is a list of meeting attendees; and Attachment3 is the proposed Radworker Training Reciprocity Program. Meeting Agenda Meeting Summary Draft RAD Worker Training Reciprocity Program for Work Group v.1 Draft Radiation Worker Portability Validation Meeting Attendees

Note: This page contains sample records for the topic "group weak interactions" 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

Focus Group Training Work Group Meeting | Department of Energy  

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

2012 In conjunction with the HAMMER Steering Committee meeting the HSS Focus Group Training Working Group Meeting was conducted from 2:00 PM to 4:30 PM at the HAMMER Training...

382

PDSF Interactive Batch Jobs  

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

Interactive Batch Jobs Running Interactive Batch Jobs You cannot login to the PDSF batch nodes directly but you can run an interactive session on a batch node using either qlogin...

383

Case 6-2009 — A 37-Year-Old Woman with Vertigo, Facial Weakness, and a Generalized Seizure  

Science Journals Connector (OSTI)

...considered most likely, in view of both the pattern of CNS involvement documented by MRI and the mediastinal and hilar lymphadenopathy. Neurosarcoidosis is a chronic granulomatous disease that varies in incidence around the world and among racial and ethnic groups — in the United States, the adjusted annual... A 37-year-old woman had a 4-month history of episodes of vertigo, followed by tinnitus, decreased hearing in her right ear, and right facial weakness; on the day of admission, she had a generalized seizure. On admission, she was confused and combative and had garbled speech, a right facial droop, and generalized hyperreflexia. Magnetic resonance imaging of the brain and spinal cord revealed multifocal linear and nodular enhancement of the leptomeninges. A diagnostic procedure was performed.

Cros D.Gonzalez R.G.Mark E.J.

2009-02-19T23:59:59.000Z

384

Research Highlights Sorted by Working Group  

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

Working Group Working Group Aerosol Life Cycle | Cloud Life Cycle | Cloud-Aerosol-Precipitation Interactions | Aerosol | Cloud Modeling | Cloud Properties | Radiative Processes Aerosol Life Cycle 2013 Bhattacharya, A. Wildfires Lead to More Warming Than Climate Models Predict, a New Mexico Fire Study Reports ASR Fast, J. . Development and Validation of a Black Carbon Mixing State Resolved Three-Dimensional Model ARM ASR Gilles, M., Moffet, R. Spectro-microscopic Measurements of Carbonaceous Aerosol Aging in Central California ARM ASR Kafle, D. N., Coulter, R. L. Micropulse Lidar-Derived Aerosol Optical Depth Climatology at ARM Sites Worldwide ARM Keppel-Aleks, G. Determining the Future of CO2 Using an Earth System Model ARM Li, Z. A Mixed Bag of Aerosols over Northeastern China ARM

385

Catalysis: Reactivity and Structure Group | Chemistry Department |  

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

Group Members Group Members Principal Investigators Jose Rodriguez Catalysis and surface science. Interaction and reaction of molecules with surfaces of metals, oxides, sulfides and carbides. Use of synchrotron-based techniques in surface and materials characterization (core and valence photoemission, x-ray absorption spectroscopy, x-ray diffraction). Modeling of surface reactions. Ping Liu Theoretical description of nanostructures, supported nanostructures, surfaces and their catalytic applications in heterogeneous catalysis and electrocatalysis. Density functional calculations, kinetic modeling and sensitivity analysis are employed to obtain a fundamental understanding of catalytic processes Dario Stacchiola Nano-Catalysis, Model mixed metal oxides, In-situ catalytic reactions at ambient pressures (AP). (Synchrotron PES, AP-XPS, AP-STM, AP-IRRAS, Inverse Catalyst, Nanoparticles, Graphene)

386

Bayesian modelling of the cool core galaxy group NGC 4325  

E-Print Network [OSTI]

We present an X-ray analysis of the radio-quiet cool-core galaxy group NGC 4325 (z=0.026) based on Chandra and ROSAT observations. The Chandra data were analysed using XSPEC deprojection, 2D spectral mapping and forward-fitting with parametric models. Additionally, a Markov chain Monte Carlo method was used to perform a joint Bayesian analysis of the Chandra and ROSAT data. The results of the various analysis methods are compared, particularly those obtained by forward-fitting and deprojection. The spectral mapping reveals the presence of cool gas displaced up to 10 kpc from the group centre. The Chandra X-ray surface brightness shows the group core to be highly disturbed, and indicates the presence of two small X-ray cavities within 15 kpc of the group core. The XSPEC deprojection analysis shows that the group has a particularly steep entropy profile, suggesting that an AGN outburst may be about to occur. With the evidence of prior AGN activity, but with no radio emission currently observed, we suggest that the group in in a pre-outburst state, with the cavities and displaced gas providing evidence of a previous, weak AGN outburst.

Paul A. Russell; Trevor J. Ponman; Alastair J. R. Sanderson

2007-03-01T23:59:59.000Z

387

LHC bounds on interactions of dark matter  

Science Journals Connector (OSTI)

We derive limits on the interactions of dark matter with quarks from ATLAS null searches for jets+missing energy based on ?1??fb-1 of integrated luminosity, using a model-insensitive effective theory framework. We find that the new limits from the LHC significantly extend limits previously derived from CDF data at the Tevatron. Translated into the parameter space of direct searches, these limits are particularly effective for ???GeV mass weakly interacting massive particles. Our limits indicate tension with isospin-violating models satisfying minimal flavor violation which attempt to reconcile the purported CoGeNT excess with Xenon-100, indicating that either a light mediator or nontrivial flavor structure for the dark sector is necessary for a viable reconciliation of CoGeNT with Xenon.

Arvind Rajaraman; William Shepherd; Tim M. P. Tait; Alexander M. Wijangco

2011-11-09T23:59:59.000Z

388

Expanded Pending Jobs by Group  

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

Expanded Pending Jobs by Group Expanded Pending Jobs by Group Daily Graph: Weekly Graph: Monthly Graph: Yearly Graph: 2 Year Graph: Last edited: 2011-04-05 14:00:25...

389

MTorres Group | Open Energy Information  

Open Energy Info (EERE)

MTorres Group Place: Murcia, Spain Zip: 30320 Sector: Wind energy Product: Wind turbine manufacturer References: MTorres Group1 This article is a stub. You can help OpenEI by...

390

Data Management Group Annual Report  

E-Print Network [OSTI]

iv Data Management Group Annual Report 2003 City of Hamilton City of Toronto GO Transit Regional of York Toronto Transit Commission The Data Management Group is a research program located ........................................................................................................ 3 Text-based Data Retrieval System `drs

Toronto, University of

391

Data Management Group Annual Report  

E-Print Network [OSTI]

Data Management Group Annual Report 2001 prepared by: Data Management Group Joint Program..............................................................................2 Text Based Data Retrieval System `drs' ..........................................................2 Internet Browser Data Retrieval System (iDRS)..............................................3 Complex Data

Toronto, University of

392

Data Management Group Annual Report  

E-Print Network [OSTI]

Data Management Group Annual Report 1999 prepared by: Data Management Group Joint Program................................................................. 1 INFORMATION PROCESSING ............................................. 2 Text Based Data Retrieval System `drs' ........................ 2 Internet Browser Data Retrieval System (iDRS) ............ 3

Toronto, University of

393

Data Management Group Annual Report  

E-Print Network [OSTI]

Data Management Group Annual Report 2000 prepared by: Data Management Group Joint Program PROCESSING ...................................................2 Text Based Data Retrieval System `drs'.................................2 Internet Browser Data Retrieval System (iDRS).....................3 Complex Data Requests

Toronto, University of

394

Room-temperature observations of the weak localization in low-mobility graphene films  

SciTech Connect (OSTI)

We report room-temperature observations of the quantum conductance corrections caused by the weak localization in graphene films synthesized using solid-state-source chemical vapor deposition. Both Raman spectroscopy and Hall measurements showed strong disorder in the samples with a low mobility of ?430 cm{sup 2}/V s. The emergence of weak localization at room temperature arises from the competition between the valley-dependent scattering and the thermal dephasing in such low-quality samples, although quantum effects normally appear in the samples that have an ideal structure at cryogenic temperatures. The large disorder in our low-mobility samples unexpectedly preserved the quantum mechanical weak localization.

Han, Junhao; Wang, Shanyue; Qian, Di; Song, Fengqi, E-mail: songfengqi@nju.edu.cn, E-mail: bgwang@nju.edu.cn; Wang, Baigeng, E-mail: songfengqi@nju.edu.cn, E-mail: bgwang@nju.edu.cn; Han, Min; Zhou, Jianfeng [National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China); Wang, Xinran; Wang, Xuefeng [School of Electrical and Electronic Engineering, Nanjing University, Nanjing 210093 (China)

2013-12-07T23:59:59.000Z

395

Method and apparatus for evaluating structural weakness in polymer matrix composites  

DOE Patents [OSTI]

A method and apparatus for evaluating structural weaknesses in polymer matrix composites is described. An object to be studied is illuminated with laser radiation and fluorescence emanating therefrom is collected and filtered. The fluorescence is then imaged and the image is studied to determine fluorescence intensity over the surface of the object being studied and the wavelength of maximum fluorescent intensity. Such images provide a map of the structural integrity of the part being studied and weaknesses, particularly weaknesses created by exposure of the object to heat, are readily visible in the image.

Wachter, Eric A. (Oak Ridge, TN); Fisher, Walter G. (Knoxville, TN)

1996-01-01T23:59:59.000Z

396

Method and apparatus for evaluating structural weakness in polymer matrix composites  

DOE Patents [OSTI]

A method and apparatus for evaluating structural weaknesses in polymer matrix composites is described. An object to be studied is illuminated with laser radiation and fluorescence emanating therefrom is collected and filtered. The fluorescence is then imaged and the image is studied to determine fluorescence intensity over the surface of the object being studied and the wavelength of maximum fluorescent intensity. Such images provide a map of the structural integrity of the part being studied and weaknesses, particularly weaknesses created by exposure of the object to heat, are readily visible in the image. 6 figs.

Wachter, E.A.; Fisher, W.G.

1996-01-09T23:59:59.000Z

397

Fusion systems for profinite groups  

Science Journals Connector (OSTI)

......April 2014 research-article Articles Fusion systems for profinite groups Radu Stancu...paper. We introduce the notion of a pro-fusion system on a pro- group, which generalizes the notion of a fusion system on a finite -group. We also prove......

Radu Stancu; Peter Symonds

2014-04-01T23:59:59.000Z

398

Water Resources Working Group Report  

E-Print Network [OSTI]

Water Resources Working Group Report This report provided content for the Wisconsin Initiative in February 2011. #12;Water Resources Working Group Wisconsin Initiative on Climate Change Impacts October 2010 #12;Water Resources Working Group Members ­ WICCI Tim Asplund (Co-Chair) - Wisconsin Department

Sheridan, Jennifer

399

Data Management Group Annual Report  

E-Print Network [OSTI]

Data Management Group Annual Report 2004 City of Hamilton City of Toronto GO Transit Regional of York Toronto Transit Commission The Data Management Group is a research program located of the funding partners: Ministry of Transportation, Ontario #12;SUMMARY The Data Management Group (DMG

Toronto, University of

400

Data Management Group Annual Report  

E-Print Network [OSTI]

Data Management Group Annual Report 1997 #12;Data Management Group Annual Report 1997 A co-operative project that is jointly funded by members of the Toronto Area Transportation Planning Data Collection: (416) 978-3941 #12;Data Management Group 1997 Annual Report Table of Contents 1 INTRODUCTION

Toronto, University of

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401

Fermilab Steering Group Report  

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

Acknowledgement Acknowledgement The Fermilab Steering Group is grateful to many members of the particle physics and accelerator community for their expert advice and contributions to the preparation of this report: Robert Abrams, Nikolai Andreev, Charles Ankenbrandt, Giorgio Apollinari, Jeff Appel, Rick Baartman, Jonathan Bagger, Wander Baldini, Barry Barish, Gerald Blazey, Dixon Bogert, Ed Bonnema, James Brau, Steven Brice, Stanley Brodsky, Daniel Broemmelsiek, Alan Bross, Charles Brown, Douglas Bryman, William Bugg, Alexey Burov, Phillip Burrows, Maksim Bychkov, Robert Cahn, Marcela Carena, Jean-Paul Carneiro, Harry Carter, Robert Carey, Brian Chase, David Christian, Michael Church, Willie Clark, Janet Conrad, John Corlett, Mary Anne Cummings, Dan Dale, Chris Damerell, Paul Debevec, André de Gouvea, Fritz DeJongh, Marcel Demarteau, Paul Derwent, Milind Diwan, Harold Lee Dodds, Gerald Dugan, Craig Dukes, Estia Eichten, Eckhard Elsen, Louis Emery, Peter Fisher, George Flanagan, Tony Favale, Gary Feldman, Buck Field, David Finley, Bonnie Fleming, Brian Foster, Emil Frlez, Kenneth Ganezer, Consolato Gattuso, Stephen Geer, Norman Gelfand, Terry Goldman, Keith Gollwitzer, Maury Goodman, Paul Grannis, Daniel Green, Terry Grimm, Alan Hahn, Reidar Hahn, Michael Harrison, Ayman Hawari, David Hertzog, Robert Hirosky, David Hitlin, Richard Holmes, Maxine Hronek, Patrick Hurh, Jim Hylen, Gerald Jackson, Andreas Jansson, David Johnson, Jeffrey Johnson, Rol Johnson, John Johnstone, Chang Kee Jung, Steven Kahn, Peter Kammel, Yuri Kamyshkov, David Kawall, Kara Keeter, Christina Keller, Robert Kephart, Harold Kirk, David Kirkby, Arkadiy Klebaner, Sergey Korenev, Ioanis Kourbanis, Andreas Kronfeld, Krishna Kumar, James Lackey, Kenneth Lande, Valeri Lebedev, Kevin Lesko, Tony Leveling, Mats Lindroos, Laurence Littenberg, Vladimir Lobashev, Kevin Lynch, William Marciano, Daniel Marlow, John Marriner, Michael Martens, Dongming Mei, Mark Messier, Peter Meyers, Phillip Miller, Shekhar Mishra, Hugh Montgomery, Kevin Munday, Homer Neal, David Neuffer, Andrew Norman, Kenneth Olsen, Peter Ostroumov, Satoshi Ozaki, Robert Palmer, Vaia Papadimitriou, Stephen Parke, Kent Paschke, Ralph Pasquinelli, Todd Pedlar, Stephen Peggs, Susan Pfiffner, Henryk Piekarz, Thomas Phillips, Dinko Pocanic, Milorad Popovic, James Popp, Eric Prebys, Chris Quigg, Regina Rameika, Ronald Ray, Lee Roberts, Tom Roberts, Natalie Roe, Jerome Rosen, Marc Ross, Howard Rubin, Randy Ruchti, Richard Sah, Niki Saoulidou, Kate Scholberg, Alan Schwartz, Yannis Semertzidis, Abraham Seiden, Melvyn Shochet, Marilyn Smith, Henry Sobel, Paul Souder, Giulio Stancari, Michelle Stancari, Raymond Stefanski, James Stone, Sheldon Stone, Michael Syphers, Alex Tarasiewicz, Eddie Tatar, Rex Tayloe, Alvin Tollestrup, Yagmur Torun, Todd Treado, Michael Turner, Fred Ullrich, John Urbin, Alexander Valishev, Leonid Vorobiev, Nick Walker, Robert Webber, Bernard Wehring, Steven Werkema, Christopher White, Herman White, James Whitmore, David Wildman, Kent Alan Williams, William Willis, Phil Winkle, William Snow, Stanley Wojcicki, Hitoshi Yamamoto, Peter Yamin, Katsuya Yonehara, Cary Yoshikawa, Albert Young, Michael Zeller, Michael Zisman, Alexander Zlobin, and Robert Zwaska

402

Overview of Bayesian sequential Monte Carlo methods for group and extended object tracking  

Science Journals Connector (OSTI)

This work presents the current state-of-the-art in techniques for tracking a number of objects moving in a coordinated and interacting fashion. Groups are structured objects characterized with particular motion patterns. The group can be comprised of ... Keywords: Group and extended object tracking, Markov chain Monte Carlo methods, Metropolis Hastings, Nonlinear filtering, Reasoning over time, Sequential Monte Carlo methods

Lyudmila Mihaylova; Avishy Y. Carmi; François Septier; Amadou Gning; Sze Kim Pang; Simon Godsill

2014-02-01T23:59:59.000Z

403

Interagency Sustainability Working Group | Department of Energy  

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

Sustainable Buildings & Campuses Interagency Sustainability Working Group Interagency Sustainability Working Group The Interagency Sustainability Working Group (ISWG) is the...

404

Transuranic Waste Transportation Working Group Agenda | Department...  

Office of Environmental Management (EM)

Transuranic Waste Transportation Working Group Agenda Transuranic Waste Transportation Working Group Agenda Transuranic Waste Transportation Working Group Agenda More Documents &...

405

Structuring interactive TV documents  

Science Journals Connector (OSTI)

Interactive video technology is meant to support user-interaction with video in scene objects associated with navigation in video segments and access to text-based metadata. Interactive TV is one of the most important applications of this area, ... Keywords: MPEG-7, XLink, interactive TV, media descriptions, metadata

Rudinei Goularte; Edson dos Santos Moreira; Maria da Graça C. Pimentel

2003-11-01T23:59:59.000Z

406

Gallium based low-interaction anions  

DOE Patents [OSTI]

The present invention provides: a composition of the formula M.sup.+x (Ga(Y).sub.4.sup.-).sub.x where M is a metal selected from the group consisting of lithium, sodium, potassium, cesium, calcium, strontium, thallium, and silver, x is an integer selected from the group consisting of 1 or 2, each Y is a ligand selected from the group consisting of aryl, alkyl, hydride and halide with the proviso that at least one Y is a ligand selected from the group consisting of aryl, alkyl and halide; a composition of the formula (R).sub.x Q.sup.+ Ga(Y).sub.4.sup.- where Q is selected from the group consisting of carbon, nitrogen, sulfur, phosphorus and oxygen, each R is a ligand selected from the group consisting of alkyl, aryl, and hydrogen, x is an integer selected from the group consisting of 3 and 4 depending upon Q, and each Y is a ligand selected from the group consisting of aryl, alkyl, hydride and halide with the proviso that at least one Y is a ligand selected from the group consisting of aryl, alkyl and halide; an ionic polymerization catalyst composition including an active cationic portion and a gallium based weakly coordinating anion; and bridged anion species of the formula M.sup.+x.sub.y [X(Ga(Y.sub.3).sub.z ].sup.-y.sub.x where M is a metal selected from the group consisting of lithium, sodium, potassium, magnesium, cesium, calcium, strontium, thallium, and silver, x is an integer selected from the group consisting of 1 or 2, X is a bridging group between two gallium atoms, y is an integer selected from the group consisting 1 and 2, z is an integer of at least 2, each Y is a ligand selected from the group consisting of aryl, alkyl, hydride and halide with the proviso that at least one Y is a ligand selected from the group consisting of aryl, alkyl and halide.

King, Wayne A. (Santa Fe, NM); Kubas, Gregory J. (Santa Fe, NM)

2000-01-01T23:59:59.000Z

407

Parity violating weak neutral-current effects in elastic e-/sup 12/C scattering. Progress report, April 15, 1981-February 28, 1982  

SciTech Connect (OSTI)

Unified gauge theories of the electro-weak interaction incorporate a neutral weak current, which, although many orders of magnitude smaller than the neutral-electromagnetic current, can be isolated through the manifestation of its parity violating effects. As a consequence, neutral current parity violation experiments provide direct access to the measurement of the weak coupling constants as well as fundamental tests of the unified theories. The verification of unified theories at low energies is a crucial prerequisite of the application of these theories to the range of higher energies where the W+- and the Z/sup 0/ are predicted to exist. One highly sensitive measurement of parity violation in the neutral current sector is provided by the determination of the asymmetry, A = (sigma/sup +/ - sigma/sup -/)/(sigma/sup +/ + sigma/sup -/), for elastic scattering of positive (+) and negative (-) helicity electrons from /sup 12/C nuclei. We have been pursuing such a program at the Bates Electron Accelerator with the goal of measuring A to a precision of approx. 10/sup -7/. By contrast, the standard model predicts a value for A of approx. 2 x 10/sup -6/.

Lubell, M.S.

1982-03-01T23:59:59.000Z

408

V-234: EMC RSA Archer GRC Open Redirection Weakness and Security Bypass  

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

4: EMC RSA Archer GRC Open Redirection Weakness and Security 4: EMC RSA Archer GRC Open Redirection Weakness and Security Bypass Security Issue V-234: EMC RSA Archer GRC Open Redirection Weakness and Security Bypass Security Issue September 4, 2013 - 6:00am Addthis PROBLEM: A weakness and a security issue have been reported in EMC RSA Archer GRC PLATFORM: EMC RSA Archer GRC 5.x ABSTRACT: This fixes multiple vulnerabilities, which can be exploited to bypass certain security restrictions and to conduct spoofing attacks REFERENCE LINKS: Secunia Advisory SA54717 SecurityTracker Alert ID 1028971 EMC Identifier: ESA-2013-057 CVE-2013-3276 CVE-2013-3277 IMPACT ASSESSMENT: Medium DISCUSSION: 1) The application does not properly restrict deactivated users. This can be exploited by deactivated users to login and gain access to otherwise

409

TYPES ARE WEAK #GROUPOIDS BENNO VAN DEN BERG AND RICHARD GARNER  

E-Print Network [OSTI]

TYPES ARE WEAK #­GROUPOIDS BENNO VAN DEN BERG AND RICHARD GARNER Abstract. We define a notion VAN DEN BERG AND RICHARD GARNER groupoid of a space---where we must identify paths up to homotopy

van den Berg, Benno

410

TYPES ARE WEAK -GROUPOIDS BENNO VAN DEN BERG AND RICHARD GARNER  

E-Print Network [OSTI]

TYPES ARE WEAK -GROUPOIDS BENNO VAN DEN BERG AND RICHARD GARNER Abstract. We define a notion Mathematics Subject Classification. Primary: 03B15, 18D05; Secondary: 18D50. 1 #12;2 BENNO VAN DEN BERG

van den Berg, Benno

411

PHYSICAL REVIEW E 85, 026211 (2012) Weakly subcritical stationary patterns: Eckhaus instability and homoclinic snaking  

E-Print Network [OSTI]

PHYSICAL REVIEW E 85, 026211 (2012) Weakly subcritical stationary patterns: Eckhaus instability from subcritical to supercritical stationary periodic patterns is described by the one of localized structures in systems exhibiting homoclinic snaking during the transition from subcriticality

Knobloch, Edgar

412

Dynamics of Weak, Bifurcated and Strong Hydrogen Bonds in Lithium Nitrate Trihydrate  

SciTech Connect (OSTI)

The properties of three distinct types of hydrogen bonds, namely a weak, a bifurcated and a strong one, all present in/the LiNO3 (HDO)(D2O)2 hydrate lattice unit cell are studied using steady-state and time-resolved spectroscopy. The lifetimes of the OH stretching vibrations for the three individual bonds are 2.2 ps (weak), 1.7 ps (bifurcated), and 1.2 ps (strong), respectively. For the first time the properties of bifurcated H bonds can thus be unambiguously directly compared to those of weak and strong H bonds in the same system. The values of their OH stretching vibration lifetime, anharmonicity, red shift and bond strength lie between those for the strong and weak H bonds. The experimentally observed inhomogeneous broadening of their spectral signature is attributed to the coupling with a low frequency intermolecular wagging vibration/

Werhahn, Jasper C.; Pandelov, S.; Xantheas, Sotiris S.; Iglev, H.

2011-07-07T23:59:59.000Z

413

Theory and Modeling of Weakly Bound/Physisorbed Materials for Hydrogen Storage  

Broader source: Energy.gov [DOE]

Presentation on the Theory and Modeling of Weakly Bound/Physisorbed Materials for Hydrogen Storage given at the DOE Theory Focus Session on Hydrogen Storage Materials on May 18, 2006.

414

Weak formulations and solution multiplicity of equilibrium configurations with Coulomb friction  

E-Print Network [OSTI]

Weak formulations and solution multiplicity of equilibrium configurations with Coulomb friction configurations of elastic struc- tures in contact with Coulomb friction. We obtain a variational formulation configurations with arbitrary small friction coefficients. We illustrate the result in two space dimensions

Bostan, Mihai

415

RHIC II Science Working Groups  

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

Workshops Workshops The series of RHIC II Science Workshops began in November 2004, at which time seven Working Groups were initiated. These groups met in workshops through 2005, with the purpose of providing an organized forum for the community to address and describe quantitatively the most important science issues for the proposed RHIC II luminosity upgrade, and corresponding detector upgrades. Each Working Group was led by three convenors representing theory and experiment, and each has produced a detailed report (except for the "New Directions" group, which provided a sounding board and input to the other groups). The Working Group reports are linked below. The summary "white paper" document, "Future Science at the Relativistic Heavy Ion Collider" (PDF), is based on these reports, and was prepared by a Writing Committee that included at least one convenor from each of the Working Groups.

416

Nuclear Quadrupole Interaction in CsF  

Science Journals Connector (OSTI)

The electric resonance method of molecular beam spectroscopy has been used under high resolution conditions to study the rotational Stark spectrum of CsF for a single rotational state of the molecule, J=1. In this method polar molecules in a single rotational state and a particular state of space quantization are selected from a molecular beam by means of inhomogeneous electric fields which give the desired molecules a unique, sigmoid path in the apparatus. Changes in the beam intensity are observed when a change in the space quantization of the molecule is produced by an oscillating electric field transverse to a homogeneous, steady electric field. For weak electric fields the observed line widths agree well with the estimated uncertainty width of 10 kc/sec. At stronger fields inhomogeneities in the field cause a broadening of the lines. At sufficiently strong fields the spectrum for CsF contains several broad lines, each of which is due to transitions of molecules in a particular vibrational state. As the field strength is decreased the resolution improves and these lines reveal a complex fine structure, the principal features of which can be explained by the interaction of the electric quadrupole moment of the Cs nucleus, spin 7/2, with the molecular electrons and the F nucleus. The F nucleus, spin 1/2, has no quadrupole moment. A complete, quantitative explanation of the spectra requires the existence of a cosine type coupling between the nuclear spins and the molecular spin of the form cI·J, and a correction for the spin-spin interaction of the two nuclei. At weak fields a different type of spectrum appears, permitting an independent evaluation of the nuclear-molecular interactions. The data allows a determination of both the magnitude and sign of the interaction constants. The quadrupole interaction, defined by (e2q?Q2h), is (+0.310±0.002) mc/sec. The constants, ch, for the I·J interactions for F and Cs are, respectively, (+16±2) kc/sec and (0±1) kc/sec. The difference in the quadrupole interaction for the first two vibrational states is less than the experimental error; i.e., less than one percent. Application of the method to the measurement of various molecular constants is discussed briefly at the end of the paper.

J. W. Trischka

1948-10-01T23:59:59.000Z

417

The Difficulty of the Heating of Cluster Cooling Flows by Sound Waves and Weak Shocks  

E-Print Network [OSTI]

We investigate heating of the cool core of a galaxy cluster through the dissipation of sound waves and weak shocks excited by the activities of the central active galactic nucleus (AGN). Using a weak shock theory, we show that this heating mechanism alone cannot reproduce observed temperature and density profiles of a cluster, because the dissipation length of the waves is much smaller than the size of the core and thus the wave energy is not distributed to the whole core.

Yutaka Fujita; Takeru Ken Suzuki

2006-10-19T23:59:59.000Z

418

Nuclear magnetic absorption line widths in weak magnetic fields with a Robinson oscillator  

E-Print Network [OSTI]

NUCLEAR MAGNETIC ABSORPTION LINE WIDTHS IN WEAK MAGNETIC FIELDS WITH A ROBINSON OSCILLATOR A Thesis by TIMOTHY LEE FLUGUM Subnntted to the Graduate College of Texas ARM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 19SI Major Subject: Physics NUCLEAR MAGNETIC ABSORPTION LINE WIDTHS IN WEAK MAGNETIC FIELDS WITH A ROBINSON OSCILLATOR A Thesis TIMOTHY LEE FLUGUM Approved as to style and content by: Nelson M. Duller (Chairman...

Flugum, Timothy Lee

1987-01-01T23:59:59.000Z

419

Weak charge form factor and radius of 208Pb through parity violation in electron scattering  

E-Print Network [OSTI]

We use distorted wave electron scattering calculations to extract the weak charge form factor F_W(q), the weak charge radius R_W, and the point neutron radius R_n, of 208Pb from the PREX parity violating asymmetry measurement. The form factor is the Fourier transform of the weak charge density at the average momentum transfer q=0.475 fm$^{-1}$. We find F_W(q) =0.204 \\pm 0.028 (exp) \\pm 0.001 (model). We use the Helm model to infer the weak radius from F_W(q). We find R_W= 5.826 \\pm 0.181 (exp) \\pm 0.027 (model) fm. Here the exp error includes PREX statistical and systematic errors, while the model error describes the uncertainty in R_W from uncertainties in the surface thickness \\sigma of the weak charge density. The weak radius is larger than the charge radius, implying a "weak charge skin" where the surface region is relatively enriched in weak charges compared to (electromagnetic) charges. We extract the point neutron radius R_n=5.751 \\pm 0.175 (exp) \\pm 0.026 (model) \\pm 0.005 (strange) fm$, from R_W. Here there is only a very small error (strange) from possible strange quark contributions. We find R_n to be slightly smaller than R_W because of the nucleon's size. Finally, we find a neutron skin thickness of R_n-R_p=0.302\\pm 0.175 (exp) \\pm 0.026 (model) \\pm 0.005 (strange) fm, where R_p is the point proton radius.

C. J. Horowitz; Z. Ahmed; C. -M. Jen; A. Rakhman; P. A. Souder; M. M. Dalton; N. Liyanage; K. D. Paschke; K. Saenboonruang; R. Silwal; G. B. Franklin; M. Friend; B. Quinn; K. S. Kumar; J. M. Mammei; D. McNulty; L. Mercado; S. Riordan; J. Wexler; R. W. Michaels; G. M. Urciuoli

2014-02-13T23:59:59.000Z

420

Analytic Expression of the Genus in Weakly Non-Gaussian Field Induced by Gravity  

E-Print Network [OSTI]

The gravitational evolution of the genus of the density field in large-scale structure is analytically studied in a weakly nonlinear regime using second-order perturbation theory. Weakly nonlinear evolution produces asymmetry in the symmetric genus curve for Gaussian initial density field. The effect of smoothing the density field in perturbation theory on the genus curve is also evaluated and gives the dependence of the asymmetry of the genus curve on spectra of initial fluctuations.

T. Matsubara

1994-05-16T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

A Theoretical Study on the Spontaneous Radiation of Inertia-gravity Waves Using the Renormalization Group Method. Part I: Derivation of the Renormalization Group Equations  

Science Journals Connector (OSTI)

By using the renormalization group (RG) method, the interaction between balanced flows and Doppler-shifted inertia-gravity waves (GWs) is formulated for the hydrostatic Boussinesq equations on the f-plane. The derived time-evolution equations (RG ...

Yuki Yasuda; Kaoru Sato; Norihiko Sugimoto

422

Particle Data Group - Authors  

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

8 Edition 8 Edition C. Amsler et al. (Particle Data Group), Physics Letters B667, 1 (2008) Also see: PDF format. AUTHORS: (Click on Author Name to get Email address, phone numbers, etc.) RPP authors C. Amsler, 1 M. Doser, 2 M. Antonelli, 3 D. Asner, 4 K.S. Babu, 5 H. Baer, 6 H.R. Band, 7 R.M. Barnett, 8 J. Beringer, 8 E. Bergren, G. Bernardi, 9 W. Bertl, 10 H. Bichsel, 11 O. Biebel, 12 P. Bloch, 2 E. Blucher, 13 S. Blusk, 14 R.N. Cahn, 8 M. Carena, 15,13,16 C. Caso, 17,* A. Ceccucci, 2 D. Chakraborty, 18 M.-C. Chen, 19 R.S. Chivukula, 20 G. Cowan, 21 O. Dahl, 8 G. D'Ambrosio, 22 T. Damour, 23 A. de Gouvea, 24 T. DeGrand, 25 B. Dobrescu, 15 M. Drees, 26 A. Edwards, 27 S. Eidelman, 28 V.D. Elvira, 15 J. Erler, 29 V.V. Ezhela, 30 J.L. Feng, 19 W. Fetscher, 31 B.D. Fields, 32 B. Foster, 33 T.K. Gaisser, 34 L. Garren, 15 H.-J. Gerber, 31 G. Gerbier, 35 T. Gherghetta, 36 G.F. Giudice, 2 M. Goodman, 37 C. Grab, 31 A.V. Gritsan, 38 J.-F. Grivaz, 39 D.E. Groom, 8 M. Grünewald, 40 A. Gurtu, 41,2 T. Gutsche, 42 H.E. Haber, 43 K. Hagiwara, 44 C. Hagmann, 45 K.G. Hayes, 46 J.J. Hernández-Rey, 47,¶ K. Hikasa, 48 I. Hinchliffe, 8 A. Höcker, 2 J. Huston, 20 P. Igo-Kemenes, 49 J.D. Jackson, 8 K.F. Johnson, 6 T. Junk, 15 D. Karlen, 50 B. Kayser, 15 D. Kirkby, 19 S.R. Klein, 51 I.G. Knowles, 52 C. Kolda, 53 R.V. Kowalewski, 50 P. Kreitz, 54 B. Krusche, 55 Yu.V. Kuyanov, 30 Y. Kwon, 56 O. Lahav, 57 P. Langacker, 58 A. Liddle, 59 Z. Ligeti, 8 C.-J. Lin, 8 T.M. Liss, 60 L. Littenberg, 61 J.C. Liu, 54 K.S. Lugovsky, 30 S.B. Lugovsky, 30 H. Mahlke, 62 M.L. Mangano, 2 T. Mannel, 63 A.V. Manohar, 64 W.J. Marciano, 61 A.D. Martin, 65 A. Masoni, 66 D. Milstead, 67 R. Miquel, 68 K. Mönig, 69 H. Murayama, 70,71,8 K. Nakamura, 44 M. Narain, 72 P. Nason, 73 S. Navas, 74,¶ P. Nevski, 61 Y. Nir, 75 K.A. Olive, 76 L. Pape, 31 C. Patrignani, 17 J.A. Peacock, 52 A. Piepke, 77 G. Punzi, 78 A. Quadt, 79, S. Raby, 80 G. Raffelt, 81 B.N. Ratcliff, 54 B. Renk, 82 P. Richardson, 65 S. Roesler, 2 S. Rolli, 83 A. Romaniouk, 84 L.J. Rosenberg, 11 J.L. Rosner, 13 C.T. Sachrajda, 85 Y. Sakai, 44 S. Sarkar, 86 F. Sauli, 2 O. Schneider, 87 D. Scott, 88 B. Seligman, 89 M. Shaevitz, 90 T. Sjöstrand, 91 J.G. Smith, 25 G.F. Smoot, 8 S. Spanier, 54 H. Spieler, 8 A. Stahl, 92 T. Stanev, 34 S.L. Stone, 14 T. Sumiyoshi, 93 M. Tanabashi, 94 J. Terning, 95 M. Titov, 96 N.P. Tkachenko, 30 N.A. Törnqvist, 97 D. Tovey, 98 G.H. Trilling, 8 T.G. Trippe, 8 G. Valencia, 99 K. van Bibber, 45 M.G. Vincter, 4 P. Vogel, 100 D.R. Ward, 101 T. Watari, 102 B.R. Webber, 101 G. Weiglein, 65 J.D. Wells, 103 M. Whalley, 65 A. Wheeler, 54 C.G. Wohl, 8 L. Wolfenstein, 104 J. Womersley, 105 C.L. Woody, 61 R.L. Workman, 106 A. Yamamoto, 44 W. -M. Yao, 8 O.V. Zenin, 30 J. Zhang, 107 R.-Y. Zhu 108 P.A. Zyla 8

423

stanford hci group / cs376 Scott Klemmer 17 October 2006  

E-Print Network [OSTI]

1 stanford hci group / cs376 Scott Klemmer · 17 October 2006 Remote Collaboration Paul Badger is highly culturally dependent e.g., Southern Europe has closer boundaries for personal space than America (tables) The Papier-Mâché toolkit (vision, rfid, barcode) iROS and the PatchPanel (interactive rooms

Klemmer, Scott

424

Energy or Mass and Interaction  

E-Print Network [OSTI]

A review. Problems: 1-Many empirical parameters and large dimension number; 2-Gravitation and Electrodynamics are challenged by dark matter and energy. Energy and nonlinear electrodynamics are fundamental in a unified nonlinear interaction. Nuclear energy appears as nonlinear SU(2) magnetic energy. Gravitation and electromagnetism are unified giving Einstein's equation and a geometric energy momentum tensor. A solution energy in the newtonian limit gives the gravitational constant G. Outside of this limit G is variable. May be interpreted as dark matter or energy. In vacuum, known gravitational solutions are obtained. Electromagnetism is an SU(2) subgroup. A U(1) limit gives Maxwell's equations. Geometric fields determine a generalized Dirac equation and are the germ of quantum physics. Planck's h and of Einstein's c are given by the potential and the metric. Excitations have quanta of charge, flux and spin determining the FQHE. There are only three stable 1/2 spin fermions. Mass is a form of energy. The rest energies of the fermions give the proton/electron mass ratio. Potential excitations have energies equal to the weak boson masses allowing a geometric interpretation of Weinberg's angle. SU(2) gives the anomalous magnetic moments of proton, electron, neutron and generates nuclear range attractive potentials strong enough to produce the binding energies of the deuteron and other nuclides. Lepton and meson masses are due to topological excitations. The geometric mass spectrum is satisfactory. The proton has a triple structure. The alpha constant is a geometric number.

Gustavo R Gonzalez-Martin

2010-07-19T23:59:59.000Z

425

Tim Kuneli, Electronics Maintenance Group  

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

Tim Kuneli, Electronics Maintenance Group Print The recent ALS power supply failure was one of the most challenging projects that Electronics Engineer Technical Superintendent Tim...

426

Infrared Thermography (IRT) Working Group  

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

Infrared Thermography (IRT) Working Group Sco McWilliams U.S. Photovoltaic Manufacturing Consor;um (PVMC) Infrared Thermography Infrared Thermography (IRT) has been demonstrated...

427

Strategic Initiatives Work Group Charter  

Broader source: Energy.gov [DOE]

Strategic Initiatives Work Group promote excellence and continuous improvement in the implementation of worker health and safety programs across the DOE complex.

428

High Temperature Membrane Working Group  

Broader source: Energy.gov [DOE]

The High Temperature Membrane Working Group consists of government, industry, and university researchers interested in developing high temperature membranes for fuel cells.

429

Renewable Electricity Working Group Presentation  

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

Renewable Electricity Working Group Chris Namovicz, Renewable Electricity Analysis Team July 9, 2013 Agenda * Review status of AEO 2013 * Discuss new model updates and development...

430

TEC Working Group Topic Groups Archives Training - Medical Training |  

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

Training - Medical Training Training - Medical Training TEC Working Group Topic Groups Archives Training - Medical Training The TEC Training and Medical Training Issues Topic Group was formed to address the training issues for emergency responders in the event of a radioactive material transportation incident. The Topic Group first met in 1996 to assist DOE in developing an approach to address radiological emergency response training needs and to avoid redundancy of existing training materials. The group worked with the Transportation Emergency Preparedness Program (TEPP) to review existing training material to determine its applicability, developed a front-end analysis describing an approach, and developed the Modular Emergency Response Radiological Transportation Training (MERRTT). In 1998, the Medical Training Issues

431

Limits on spin-dependent wimp-nucleon interactions from the cryogenic dark matter search  

SciTech Connect (OSTI)

The Cryogenic Dark Matter Search (CDMS) is an experiment to detect weakly interacting massive particles (WIMPs) based on their interactions with Ge and Si nuclei. We report the results of an analysis of data from the first two runs of CDMS at the Soudan Underground Laboratory in terms of spin-dependent WIMP-nucleon interactions on {sup 73}Ge and {sup 29}Si. These data exclude new regions of spin-dependent WIMP-nucleon interaction parameter space, including regions relevant to spin-dependent interpretations of the annual modulation signal reported by the DAMA/NaI experiment.

Akerib, D.S.; Armel-Funkhouser, M.S.; Attisha, M.J.; Bailey, C.N.; Baudis, L.; Bauer, Daniel A.; Brink, P.L.; Brusov, P.P.; Bunker, R.; Cabrera, B.; Caldwell, D.O.; Chang, C.L.; Cooley, J.; Crisler, M.B.; Cushman, P.; Daal, M.; DeJongh, F.; Dixon, R.; Dragowsky, M.R.; Driscoll, D.D.; Duong, L.; /Case Western Reserve U. /UC, Berkeley /Brown U.

2005-09-01T23:59:59.000Z

432

Planet -Star Plasma Interactions  

E-Print Network [OSTI]

as NV2 thus PC varies as PB Solar Wind expansion #12;Flow Obstacle Weakly/Not magnetized (Solar wind - energy sources - scaling laws - extrapolation to exoplanets · Conclusion #12;· Interest of LF radio observations of exoplanets · Theoretical predictions - planetary radio emissions - energy sources - scaling

Demoulin, Pascal

433

Gas Phase Moleculer Dynamics (GPMD) Group | Chemistry Department |  

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

Group Members Group Members Greg Hall (Group Leader) Chemical dynamics of unimolecular and bimolecular reactions. High resolution spectroscopic probes of collisional energy transfer processes. Elastic and inelastic interactions responsible for pressure broadening, saturation relaxation and depolarization. Non-adiabatic reactions and multiple surface interactions. Vector correlations and angular momentum polarization probes of chemical dynamics. Applied laser spectroscopy. Trevor Sears (PI) Use of frequency comb techniques for precision spectroscopic measurements in chemical systems. Development of new high resolution and high sensitivity spectroscopic techniques. Free radical spectroscopy relevant to combustion chemistry. Characterization of collisional phenomena and their effects on spectroscopic lineshapes, pressure broadening and sub-Doppler measurements. Hyperfine spectroscopy of 207PbF for potential e-EDM measurements

434

A baryon standard model for electroweak and strong interactions  

Science Journals Connector (OSTI)

A new model for electroweak and strong interactions based on observed particles only is proposed. The strong sector of this model is determined by the spontaneously broken SU(6) gauge group, which naturally ar...

R. Râczka

1991-01-01T23:59:59.000Z

435

Weak greedy algorithms[*]This research was supported by National Science Foundation Grant DMS 9970326 and by ONR Grant N00014?96?1?1003.  

Science Journals Connector (OSTI)

Theoretical greedy type algorithms are studied: a Weak Greedy Algorithm, a Weak Orthogonal Greedy Algorithm, and a Weak Relaxed Greedy Algorithm. These algorithms are defined by weaker assumptions than their a...

V.N. Temlyakov

436

FACT SHEET: BIOENERGY WORKING GROUP  

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

, 2010 , 2010 1 FACT SHEET: BIOENERGY WORKING GROUP At the Clean Energy Ministerial in Washington, D.C. on July 19 th and 20 th , ministers launched a Bioenergy Working Group, which will advance the deployment of bioenergy technologies by implementing recommendations of the Technology Action Plan on Bioenergy Technologies that was released by the Major Economies Forum Global Partnership in December 2009. The Working Group will work in close cooperation with the Global Bioenergy Partnership (GBEP), which is co-chaired by Brazil and Italy. Initial key activities of the Working Group include: 1. Global Bioenergy Atlas: The Working Group will combine and build upon existing databases of sustainably-developed bioenergy potential around the globe and make it available in an open web-

437

Richway Group | Open Energy Information  

Open Energy Info (EERE)

Richway Group Richway Group Jump to: navigation, search Logo: Richway Group Name Richway Group Address 105 - 12031 Horseshoe Way Place Richmond, British Columbia Zip V7A 4V4 Sector Biomass Website http://www.richwaygroup.com Coordinates 49.163469°, -123.137766° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":49.163469,"lon":-123.137766,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

438

Focus Groups | Department of Energy  

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

Outreach & Collaboration » Focus Groups Outreach & Collaboration » Focus Groups Focus Groups A forum for interface between union worker representatives and senior DOE managers and stakeholders to address key issues and concerns from worker perspectives, share information regarding HSS activities and programs, and identify potential opportunities to work together to improve worker health and safety at DOE sites. Learn more about the HSS Focus Groups... Labor Management Meetings and Activities HSS provides forums for communication between labor and management related to worker health, safety and security improvements across the DOE complex. 10 CFR 851 Worker Safety and Health Program The 10 C.F.R. 851 Work Group promotes excellence in the implementation of 10 C.F.R. 851, "Worker Safety and Health" and continuous improvement in the

439

Iodine content of food groups  

Science Journals Connector (OSTI)

The iodine content of several kinds of foods representing different product groups available on the Swiss market was analyzed by isotope dilution inductively coupled plasma mass spectrometry using the enriched long-lived nuclide 129I. Considerable variations in levels of iodine between single foodstuffs within food groups were found, which also applied for levels in different food groups. The contribution of the food groups to the average daily iodine intake for the Swiss population was estimated from recent food consumption data. Bread and milk were identified as significant sources of iodine in the Swiss diet as they contributed 58 and 29 ?g/day, respectively. The estimated contribution of all basic food groups to the per capita intake of iodine was approximately 140 ?g/day, which was somewhat below the amount recognized for adequate nutrition (150 ?g/day). In view of the additional consumption of iodized kitchen salt, an average of 140 ?g/day underestimates the actual iodine intake.

M. Haldimann; A. Alt; A. Blanc; K. Blondeau

2005-01-01T23:59:59.000Z

440

Group Members-Surface Electrochemistry and Electrocatalysis (SEE) Group |  

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

Group Members Group Members Principal Investigators Radoslav Adzic (Group Leader) Surface electrochemistry, Electrocatalysis, Direct energy conversion, Fuel cells Jia Wang Surface electrochemistry, Electrocatalysis, Nano-synthesis, Structural characterization using XRD, TEM, and SEM, Fuel cells and water electrolysis Miomir Vukmirovic To advance fuel cell electrocatalysts for higher activity and improved durability, and for lower cost through reduced Pt loading. Investigation of single crystal model systems for fundamental understanding and structured nanoparticle electrocatalysts for applications. Development of Pt monolayer core-shell electrocatalysts for the cathode (oxygen reduction reaction). Kotaro Sasaki Electrocatalysis, fuel cells and water splitting, Direct energy conversion, Nanotechnology, Nanomaterial characterization by in situ XAS and XRD, Surface modifications by electrochemical methods

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441

A multi-actor spatio-temporal interaction model used to geosimulate the zoonosis propagation (WIP)  

Science Journals Connector (OSTI)

Several approaches and models have been proposed to simulate the spread of infectious diseases such as West Nile virus (WNV) or Lyme disease. However, these models such as mathematical models have some weaknesses when trying to simulate the influence ... Keywords: GeoSimulation, decision support systems, spatio-temporal interactions, spread of infectious diseases

Mondher Bouden; Bernard Moulin

2012-03-01T23:59:59.000Z

442

ABSORPTION ET DIFFUSION DE PHOTONS OPTIQUES PAR UN ATOME EN INTERACTION AVEC DES PHOTONS DE RADIOFRQUENCE  

E-Print Network [OSTI]

153. ABSORPTION ET DIFFUSION DE PHOTONS OPTIQUES PAR UN ATOME EN INTERACTION AVEC DES PHOTONS DE'annuler. Ceci modifie de façon importante le spectre d'absorption de l'atome « habillé» en champ faible et l of the absorption spectrum of the "dressed" atom in a weak magnetic field and of the magnetic depolarization effect

Paris-Sud XI, Université de

443

A functional sequence-specific interaction between influenza A virus genomic RNA segments  

Science Journals Connector (OSTI)

...2/ nuclear export protein (NS2/NEP)] of the exemplar avian H5N2...of PB1, PB1-N40, NS1, or NS2/NEP (Fig. S3) and...mutant viruses. Viral RNA 7 codes for the matrix protein M1 and...vitro (26), whereas vRNA 6 codes for NA and interacts weakly with...

Cyrille Gavazzi; Matthieu Yver; Catherine Isel; Redmond P. Smyth; Manuel Rosa-Calatrava; Bruno Lina; Vincent Moulès; Roland Marquet

2013-01-01T23:59:59.000Z

444

Q{sub weak} experiment update and applications/opportunities at lower energies  

SciTech Connect (OSTI)

The Q{sub weak} experiment has recently completed data-taking at Jefferson Lab. The primary focus of the experiment is to perform a precision measurement of the proton's neutral weak charge. The Standard Model gives a definite prediction for the weak charge. Any deviation from that can be interpreted as evidence for new physics beyond the Standard Model. This precision, low energy measurement is sensitive to new physics signatures at energy scales up to 2 TeV. The experiment measures the parity-violating asymmetry in the scattering of 1.165 GeV longitudinally polarized electrons on the proton at low momentum transfer (Q{sup 2} ? 0.025 (GeV/c){sup 2}). This paper provides a brief status report on the experiment with a focus on instrumentation and techniques that are applicable to lower beam energy realizations of parity-violating electron scattering measurements. Estimates of anticipated errors on the proton's weak charge expected if the Q{sub weak} apparatus were used at a lower beam energy are also discussed.

Pitt, Mark L. [Center for Neutrino Physics and Department of Physics, Virginia Tech, Blacksburg, VA 24061 (United States); Collaboration: Qweak Collaboration

2013-11-07T23:59:59.000Z

445

Biased Dark Energy Constraints from Neglecting Reduced Shear in Weak Lensing Surveys  

E-Print Network [OSTI]

The weak gravitational lensing of distant galaxies by large-scale structure is expected to become a powerful probe of dark energy. By measuring the ellipticities of large numbers of background galaxies, the subtle gravitational distortion called "cosmic shear" can be measured and used to constrain dark energy parameters. The observed galaxy ellipticities, however, are induced not by shear but by reduced shear, which also accounts for slight magnifications of the images. This distinction is negligible for present weak lensing surveys, but it will become more important as we improve our ability to measure and understand small-angle cosmic shear modes. I calculate the discrepancy between shear and reduced shear in the context of power spectra and cross spectra, finding the difference could be as high as 10% on the smallest accessible angular scales. I estimate how this difference will bias dark energy parameters obtained from two weak lensing methods: weak lensing tomography and the shear ratio method known as offset-linear scaling. For weak lensing tomography, ignoring the effects of reduced shear will cause future surveys considered by the Dark Energy Task Force to measure dark energy parameters that are biased by amounts comparable to their error bars. I advocate that reduced shear be properly accounted for in such surveys, and I provide a semi-analytic formula for doing so. Since reduced shear cross spectra do not follow an offset-linear scaling relation, the shear ratio method is similarly biased but with smaller significance.

Charles Shapiro

2008-12-03T23:59:59.000Z

446

RKKY interaction in graphene  

Science Journals Connector (OSTI)

We consider RKKY interaction between two magnetic impurities in graphene. The consideration is based on the perturbation theory for the thermodynamic potential in the imaginary time representation. We analyze the symmetry of the RKKY interaction on the bipartite lattice at half filling. Our analytical calculation of the interaction is based on direct evaluation of real space spin susceptibility.

E. Kogan

2011-09-19T23:59:59.000Z

447

Quintessence with Yukawa Interaction  

E-Print Network [OSTI]

We consider a quintessence model for dark energy interacting with dark matter via a Yukawa interaction. To put constraints on this model we use the CMB measurements from the Planck satellite together with BAO, SNIa and $H_0$ data. We conclude that this is a viable model and an appropriate scalar potential can favor the interacting scenario.

Costa, André A; Abdalla, E

2014-01-01T23:59:59.000Z

448

Special Report Order, CH2M Hill Hanford Group, Inc. - October 22, 2001 |  

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

CH2M Hill Hanford Group, Inc. - October 22, CH2M Hill Hanford Group, Inc. - October 22, 2001 Special Report Order, CH2M Hill Hanford Group, Inc. - October 22, 2001 October 22, 2001 Special Report Order ssued to CH2M Hill Hanford Group, Inc., related to Multiple Nuclear Safety Issues at the Hanford Site On September 18, 2001, the Office of Price-Anderson Enforcement (OE) in coordination with the DOE Office of River Protection (ORP) conducted a review of the actions taken by CH2M Hill Hanford Group (CHG) in response to an Enforcement Letter dated April 24, 2001. This Enforcement Letter referenced three Noncompliance Tracking System (NTS) reports submitted by CHG which collectively suggested weaknesses in your nuclear safety operations related to (1) corrective action management, (2) worker training

449

TEC Working Group Topic Groups Rail | Department of Energy  

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

Rail Rail TEC Working Group Topic Groups Rail The Rail Topic Group has the responsibility to identify and discuss current issues and concerns regarding rail transportation of radioactive materials by the Department of Energy (DOE). The group's current task is to examine different aspects of rail transportation including inspections, tracking and radiation monitoring, planning and process, and review of lessons learned. Ultimately, the main goal for members will be to assist in the identification of potential rail routes for shipments to Yucca Mountain, in a manner that will contribute to a safe, dynamic, and flexible transportation system. The identification of potential routes from reactor sites and DOE facilities will serve as an important first step in transportation planning, examining alternative routes, and getting feedback

450

TEC Working Group Topic Groups Routing | Department of Energy  

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

Routing Routing TEC Working Group Topic Groups Routing ROUTING The Routing Topic Group has been established to examine topics of interest and relevance concerning routing of shipments of spent nuclear fuel (SNF) and high-level radioactive waste (HLW) to a national repository at Yucca Mountain, Nevada by highway, rail, and intermodal operations that could involve use of barges. Ultimately, the main goal for the topic group members will be to provide stakeholder perspectives and input to the Office of Logistics Management (OLM) in the Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM) for the identification of a national suite of routes to Yucca Mountain. The identification of a suite of routes will provide an advanced planning framework for State and Tribal

451

TEC Working Group Topic Groups Manual Review | Department of Energy  

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

Manual Review Manual Review TEC Working Group Topic Groups Manual Review This group is responsible for the update of DOE Manual 460.2-1, Radioactive Material Transportation Practices Manual. This manual was issued on September 23, 2002, and establishes a set of standard transportation practices for U.S. Department of Energy (DOE) programs to use in planning and executing offsite shipments of radioactive materials including radioactive waste. The manual was developed in response to recommendations from various DOE programs and external stakeholders. A writing group was convened to evaluate the shipping practices being used or planned for use throughout the Department, document them, and, where appropriate, standardize them. The results of this effort are reflected

452

Perfect fluid space-times admitting a 3-dimensional conformal group acting on null orbits  

E-Print Network [OSTI]

Space-times admitting a 3-dimensional Lie group of conformal motions $C_3$ acting on null orbits are studied. Coordinate expressions for the metric and the conformal Killing vectors (CKV) are then provided (irrespectively of the matter content) and all possible perfect fluid solutions are found, although none of them verifies the weak and dominant energy conditions over the whole space-time manifold.

A. M. Sintes; J. Carot

2000-05-16T23:59:59.000Z

453

LATBauerdick Fermilab Project Management Group Meeting  

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

Jan 17, 2006 Jan 17, 2006 CMS CMS US USCMS CMS f DOE/NSF Review Pre-Meeting with the PMG LATBauerdick, L1 Project Manager 1 LATBauerdick Fermilab Project Management Group Meeting Jan 17, 2006 CMS CMS US USCMS CMS f Agenda for Review ✦ Plenary: 2:30 h ★ U.S. CMS Overview and CMS Computing -- LATBauerdick (30'+5') ★ CMS Software and Preparations for Physics-- Avi Yagil (20'+5') ★ U.S. CMS S&C Status and Plans -- Ian Fisk (35'+5') ★ U.S. CMS Tier-2 Program -- Ken Bloom (20'+5') ★ DISUN Status and Plans -- Frank Würthwein (20'+5') ✦ Parallel Sessions: 3h ★ Core Software - run by Sexton-Kennedy ✦ participating: Yagil, Clare ★ Management, External Interactions, Physics - run by LATBauerdick ✦ participating: Fisk, Green, (Yagil), Cousins, White, Montgomery ★ Facilities, Grids, Infrastructure - run by Bakken

454

Neutrino halos in clusters of galaxies and their weak lensing signature  

SciTech Connect (OSTI)

We study whether non-linear gravitational effects of relic neutrinos on the development of clustering and large-scale structure may be observable by weak gravitational lensing. We compute the density profile of relic massive neutrinos in a spherical model of a cluster of galaxies, for several neutrino mass schemes and cluster masses. Relic neutrinos add a small perturbation to the mass profile, making it more extended in the outer parts. In principle, this non-linear neutrino perturbation is detectable in an all-sky weak lensing survey such as EUCLID by averaging the shear profile of a large fraction of the visible massive clusters in the universe, or from its signature in the general weak lensing power spectrum or its cross-spectrum with galaxies. However, correctly modeling the distribution of mass in baryons and cold dark matter and suppressing any systematic errors to the accuracy required for detecting this neutrino perturbation is severely challenging.

Villaescusa-Navarro, Francisco; Peña-Garay, Carlos [IFIC, Universidad de Valencia-CSIC, E-46071, Valencia (Spain); Miralda-Escudé, Jordi [Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys, 23, 08010-Barcelona (Spain); Quilis, Vicent, E-mail: villa@ific.uv.es, E-mail: miralda@icc.ub.es, E-mail: penya@ific.uv.es, E-mail: vicent.quilis@uv.es [Departamento de Astronomia y Astrofísica, Universidad de Valencia, C/ Dr. Moliner, 50, E-46100, Burjassot, Valencia (Spain)

2011-06-01T23:59:59.000Z

455

Interaction Design Patterns For Multi-touch Tabletop Collaborative Games  

E-Print Network [OSTI]

the effectiveness of the proposed interaction designs in trials involving two groups of children with contrasting to be effective in soliciting collaborative play on interactive tabletops. Author Keywords Multi Nanyang Technological University Singapore 639798 aswbgoh@ntu.edu.sg Wei Shou School of Computer

Goh, Wooi Boon

456

PDSF Interactive Nodes  

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

Interactive (login) Nodes Interactive (login) Nodes Interactive (login) Nodes There are 4 interactive nodes at PDSF, pdsf[1-4].nersc.gov, that should be accessed via ssh to pdsf.nersc.gov. These are the gateways to accessing the rest of PDSF. Users can submit batch jobs as well as view and manipulate their files and directories from the interactive nodes. The configuration of the interactive nodes is shown in the table below. Processor Clock Speed (GHz) Architecture Cores Total Memory (GB) Scratch Space (GB) Intel Xeon X5650 2.67 x86_64 12 47 184 Because these nodes are shared by many users anything disruptive you might do affects not only your work but their work, too. Please take a look at the Best Practices page for guidance about what you should and should not do on the interactive nodes.

457

Surprising Quasiparticle Interactions in Graphene  

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

Surprising Quasiparticle Interactions in Graphene Print Surprising Quasiparticle Interactions in Graphene Print Until now, the world's electronics have been dominated by silicon, whose properties, while excellent, significantly limit the size and power consumption of today's computer chips. In order to develop ever smaller and more efficient devices, scientists have turned their attention to carbon, which can be formed into nanostructures like nanotubes, whose properties can be tuned from metallic to semiconducting. However, using carbon nanotubes for complex circuits is nearly impossible because their location and functionality in devices cannot be controlled at will, making them a poor substitute for silicon. Graphene, however, does not have these limitations. This single sheet of carbon atoms that is the building block of carbon nanotubes, C60 molecules, and graphite turns out to have similar functionality but with the added benefit that it can be grown with conventional methods and patterned into devices. Now, a group of scientists from Germany and the ALS, using angle-resolved photoemission spectroscopy (ARPES) at ALS Beamine 7.0.1, have succeeded in making the first measurement of the carrier lifetime in graphene over a wide energy scale and have found surprising new interactions that suggest new kinds of devices.

458

Surprising Quasiparticle Interactions in Graphene  

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

Surprising Quasiparticle Surprising Quasiparticle Interactions in Graphene Surprising Quasiparticle Interactions in Graphene Print Wednesday, 31 October 2007 00:00 Until now, the world's electronics have been dominated by silicon, whose properties, while excellent, significantly limit the size and power consumption of today's computer chips. In order to develop ever smaller and more efficient devices, scientists have turned their attention to carbon, which can be formed into nanostructures like nanotubes, whose properties can be tuned from metallic to semiconducting. However, using carbon nanotubes for complex circuits is nearly impossible because their location and functionality in devices cannot be controlled at will, making them a poor substitute for silicon. Graphene, however, does not have these limitations. This single sheet of carbon atoms that is the building block of carbon nanotubes, C60 molecules, and graphite turns out to have similar functionality but with the added benefit that it can be grown with conventional methods and patterned into devices. Now, a group of scientists from Germany and the ALS, using angle-resolved photoemission spectroscopy (ARPES) at ALS Beamine 7.0.1, have succeeded in making the first measurement of the carrier lifetime in graphene over a wide energy scale and have found surprising new interactions that suggest new kinds of devices.

459

A WEAK-LENSING AND NEAR-INFRARED STUDY OF A3192: DISASSEMBLING A RICHNESS CLASS 3 ABELL CLUSTER  

SciTech Connect (OSTI)

We present a joint gravitational lensing and near-infrared study of the galaxy cluster Abell 3192 (A3192) that has been associated both with galaxies at z = 0.168 and with the X-ray luminous cluster RXC J0358.8-2955 (RXC J0358) at z = 0.425. Weak-lensing analysis of our Hubble Space Telescope snapshot observation with the Advanced Camera for Surveys detects two mass over-densities separated by {approx}2 arcmin, one adjacent to the optical position of A3192 (4.4{sigma} significance) and the other adjacent to the X-ray position of RXC J0358 (6.2{sigma} significance). These mass peaks coincide with peaks in the K-band luminosity density of galaxies with near-infrared colors consistent with the red sequence at z = 0.168 and z 0.425, respectively. Moreover, the Bayesian evidence of parameterized mass models that include two cluster/group-scale halos centered on the respective mass peaks exceeds that of single-halo models by a factor of {>=}10. The total projected mass of each galaxy system within 250 kpc of the respective peaks is M{sub WL}(z = 0.168) {approx_equal} 3 Multiplication-Sign 10{sup 13} M{sub Sun} and M{sub WL}(z = 0.425) {approx_equal} 1.2 Multiplication-Sign 10{sup 14} M{sub Sun }, both with total mass-to-light ratios of M{sub WL}/L{sub K} {approx_equal} 20 M{sub Sun }/L{sub Sun }. The original Abell cluster therefore comprises two independent galaxy systems-a foreground group at z = 0.168 and RXC J0358 at z = 0.425. Our results demonstrate the power of combining X-ray, near-infrared, and weak-lensing observations to select massive clusters, place those clusters and interloper galaxy systems along the line of sight, and measure their masses. This combination will be invaluable to robust interpretation of future high-redshift cluster surveys, including eROSITA.

Hamilton-Morris, Victoria; Smith, Graham P.; Haines, C. P.; Sanderson, A. J. R. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Edge, A. C. [Institute of Computational Cosmology, Durham University, South Road, Durham DH1 3LE (United Kingdom); Egami, E. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Marshall, P. J. [Sub-department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom); Targett, T. A., E-mail: vhh@star.sr.bham.ac.uk, E-mail: gps@star.sr.bham.ac.uk [SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ (United Kingdom)

2012-04-01T23:59:59.000Z

460

Weak localization of dilute 2D electrons in undoped GaAs heterostructures.  

SciTech Connect (OSTI)

The temperature dependence of the resistivity and magnetoresistance of dilute 2D electrons are reported. The temperature dependence of the resistivity can be qualitatively described through phonon and ionized impurity scattering. While the temperature dependence indicates no ln(T) increase in the resistance, a sharp negative magnetoresistance feature is observed at small magnetic fields. This is shown to arise from weak localization. At very low density, we believe weak localization is still present, but cannot separate it from other effects that cause magnetoresistance in the semi-classical regime.

Seamons, John Andrew; Lilly, Michael Patrick; Reno, John Louis; Bielejec, Edward Salvador

2004-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "group weak interactions" 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

Review of grid connection requirements for generation assets in weak power grids  

Science Journals Connector (OSTI)

Abstract The integration of variable energy sources in weak power grids poses many technical and economic challenges. Both aspects have an impact on the development of grid codes, that is worth analysing. Grid codes shall be adapted to technical constraints in the corresponding power grid, such as the network strength and the characteristics of generation technologies. This paper reviews and compares technical requirements imposed on to generation assets in countries with very distinct characteristics, in order to analyse the influence of weakness and isolation of a power grid on the interconnection conditions imposed by system operators to grid users. Current and future regulation aspects are covered.

Agurtzane Etxegarai; Pablo Eguia; Esther Torres; Araitz Iturregi; Victor Valverde

2015-01-01T23:59:59.000Z

462

Acterra Group | Open Energy Information  

Open Energy Info (EERE)

Acterra Group Acterra Group Jump to: navigation, search Name Acterra Group Place MARION, Iowa Zip 52302 Sector Services Product Acterra Group provides consulting, project financing, services and support to energy, natural resource, and sustainability companies. Coordinates 44.671312°, -88.889263° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.671312,"lon":-88.889263,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

463

Arakaki Group | Open Energy Information  

Open Energy Info (EERE)

Arakaki Group Arakaki Group Jump to: navigation, search Name Arakaki Group Place Fernandopolis, Sao Paulo, Brazil Product Brazil based agriculture company, which owns 50% of an ethanol plant. Coordinates -20.284244°, -50.246359° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":-20.284244,"lon":-50.246359,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

464

Lucas Group | Open Energy Information  

Open Energy Info (EERE)

Group Group Jump to: navigation, search Name Lucas Group Place Chicago, Illinois Sector Services Product Renewable Energy Recruiters Year founded 1970 Coordinates 41.850033°, -87.6500523° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.850033,"lon":-87.6500523,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

465

Physics Division: Subatomic Physics Group  

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

Subatomic Physics Subatomic Physics Physics home » Subatomic Physics Site Home About Us Groups Applied Modern Physics, P-21 Neutron Science and Technology, P-23 Plasma Physics, P-24 Subatomic Physics, P-25 CONTACTS Group Leader Jon Kapustinsky (Acting) Deputy Group Leader Andy Saunders Office Administration Irene Martinez Miquela Sanchez Group Office (505) 667-6941 Physics Links Jobs in Physics Human Resources Working at Los Alamos Los Alamos resources Who we are, what we do We conduct basic research in nuclear and particle physics, applying this expertise to solve problems of national importance. By pushing the limits of our understanding of the smallest building blocks of matter through diverse experiments probing aspects of subatomic reactions, we aim to provide a more thorough understanding of the basic

466

Altira Group | Open Energy Information  

Open Energy Info (EERE)

Altira Group Altira Group Jump to: navigation, search Name Altira Group Address 1675 Broadway, Suite 2400 Place Denver, Colorado Zip 80202 Region Rockies Area Product Venture Capital Number of employees 11-50 Year founded 1996 Phone number 303-592-5500 Website http://www.altiragroup.com/ Coordinates 39.742513°, -104.988163° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.742513,"lon":-104.988163,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

467

The Platinum-Group Elements:  

Science Journals Connector (OSTI)

...higher Pt emissions have been measured for diesel catalysts (Moldovan et al. 2002...1031-1036 Johnson Matthey (2007) Market Data Tables. Online information www...platinum-group elements released from gasoline and diesel engine catalytic converters. Science...

Sebastien Rauch; Gregory M. Morrison

468

BEDES Strategic Working Group Recommendations  

Broader source: Energy.gov [DOE]

The BEDES Strategic Working Group Recommendations document is a guide to how the BEDES Dictionary can be brought to market and provide the services for which it was designed.

469

Ayrshire Red Squirrel Group Squirrelpox  

E-Print Network [OSTI]

Ayrshire Red Squirrel Group SSG Report 1st March 2012 Squirrelpox Sero-positive grey squirrels. Concerns are also rising that there may be outbreaks of pox in red squirrel populations which have gone

470

Sustainability Community Special Interest Group  

E-Print Network [OSTI]

Sustainability Community Special Interest Group Meeting, CHI 2012 Eli Blevis, Yue Pan, & David: Weather Effects #12;Discussion Catalyst: Social Sustainability #12;Discussion Catalyst: Barriers & Brick Catalyst: Education #12;Discussion Catalyst: Cultural Factors #12;Discussion Catalyst: Finding Our Way #12

Blevis, Eli

471

DOE Catalysis Working Group Meeting  

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

PEMFC Performance and Durability - Jim Waldecker (Ford) 9:45 - 10:00 Degradation of Nanoparticle Pt alloy and De-alloyed Pt Catalysts - Debbie Myers (ANL) Catalysis Working Group...

472

Midwest Hydro Users Group Meeting  

Broader source: Energy.gov [DOE]

The Midwest Hydro Users Group will be holding their annual Fall meeting on November 12th and 13th in Wausau, Wisconsin.  An Owners-only meeting on the afternoon of the 12th followed by a full...

473

Report of Working Group IV  

Science Journals Connector (OSTI)

This report summarizes the discussions of the Working Group on Resource Policy and East-West Relationships that were held as part of the NATO Advance Study Institute on “Deposit and Geoenvironmental Models for...

Gabor Gaál; Slavko Šolar

2002-01-01T23:59:59.000Z

474

Interagency Committees and Working Groups  

Broader source: Energy.gov [DOE]

DOE is actively involved with other Federal agencies that have responsibilities for the radiation protection of the public and the environment. This site provides the different committees and working groups that DOE is involved with.

475

LLNL Chemical Kinetics Modeling Group  

SciTech Connect (OSTI)

The LLNL chemical kinetics modeling group has been responsible for much progress in the development of chemical kinetic models for practical fuels. The group began its work in the early 1970s, developing chemical kinetic models for methane, ethane, ethanol and halogenated inhibitors. Most recently, it has been developing chemical kinetic models for large n-alkanes, cycloalkanes, hexenes, and large methyl esters. These component models are needed to represent gasoline, diesel, jet, and oil-sand-derived fuels.

Pitz, W J; Westbrook, C K; Mehl, M; Herbinet, O; Curran, H J; Silke, E J

2008-09-24T23:59:59.000Z

476

Diffeomorphism groups and anyon fields  

SciTech Connect (OSTI)

We make use of unitary representations of the group of diffeomorphisms of the plane to construct an explicit field theory of anyons. The resulting anyon fields satisfy q-commutators, where q is the well-known phase shift associated with a single counterclockwise exchange of a pair of anyons. Our method uses a realization of the braid group by means of paths in the plane, that transform naturally under diffeomorphisms of R{sup 2}.

Goldin, G.A. [Rutgers Univ., New Brunswick, NJ (United States); Sharp, D.H. [Los Alamos National Lab., NM (United States)

1995-09-01T23:59:59.000Z

477

Fifteenth LAMPF users group meeting  

SciTech Connect (OSTI)

The Fifteenth LAMPF Users Group Meeting was held November 2-3, 1981 at the Clinton P. Anderson Meson Physical Facility. The program of papers scheduled to be presented was amended to include a Report from Washington by Clarence R. Richardson, US Department of Energy. The general meeting ended with a round-table working group discussion concerning the Planning for a Kaon Factory. Individual items from the meeting were prepared separately for the data base.

Cochran, D.R.F. (comp.)

1982-03-01T23:59:59.000Z

478

NEWTON: Blood Group Systems Usage  

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

Blood Group Systems Usage Blood Group Systems Usage Name: Kishori Status: student Grade: n/a Location: Outside U.S. Country: India Date: Summer 2013 Question: What is the difference between MN blood group system and ABO bloodgroup system? Although, we nowadays prefer ABO blood groups why do we use MN blood groups in the forensic department? Replies: Humans actually have multiple blood antigens on the surface of our blood cells. Wikipedia says that there are over 50 different blood group antigens. ABO and Rh are just the most dominant. Rh actually has 3 alleles called C, D and E. So one could be CCddee, for example, but clinically, when referring to Rh, only the D antigen is considered. So MN is another system that is also present. The reason it would be considered in forensics is due to population genetics considerations. Certain combinations are found in different percentages depending on what ancestry a person is a part of. Humans evolved in isolation from each other and until relatively recently, were separated due to difficult travel/migration. But even though we can move around the planet easily now, we still carry the history of our ancestry in our DNA. M and N are codominant, like the ABO system.

479

Audio delivery and territoriality in collaborative digital musical interaction  

Science Journals Connector (OSTI)

This paper explores the design of collaborative musical software through an evaluation of the effects different audio delivery mechanisms have on the way groups of co-located musicians work together in real time via a software environment. Ten groups ... Keywords: CSCW, audio, collaboration, design, evaluation, human interaction, music, usability

Robin Fencott; Nick Bryan-Kinns

2012-09-01T23:59:59.000Z

480

Networks Spanish project COPABIB Group Murcia Group Polit. Valencia Group La Laguna Computation in heterogeneous-hierarchical  

E-Print Network [OSTI]

Networks Spanish project COPABIB Group Murcia Group Polit. Valencia Group La Laguna Computation in heterogeneous-hierarchical environments Project COPABIB: Univ. Alicante, Castell´on, La Laguna, Murcia COPABIB Group Murcia Group Polit. Valencia Group La Laguna Contents 1 Networks 2 Spanish project COPABIB 3

Giménez, Domingo

Note: This page contains sample records for the topic "group weak interactions" 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

Pair interaction of metal atoms on a metal surface  

Science Journals Connector (OSTI)

Pair interactions of tungsten and iridium adatoms on the W {110} plane are studied by measuring two-dimensional pair distributions with two adatoms on a plane. Each distribution contains from 600 to 950 field-ion-microscopy observations. Pair energies over a distance range of ?2.5 to ?50 Å are derived by comparing the experimentally measured pair distributions with the calculated pair distributions for two noninteracting atoms. It is found that Ir-Ir pair interaction exhibits an attractive region at ?5 Å and a repulsive region around 8 Å. If an oscillatory structure exists, its amplitudes decay already to less than ?10 meV beyond 10 Å. The plane edge seems to repel Ir adatoms with a weak long-range force. The W-Ir interaction at a short range is weaker than the Ir-Ir interaction. However, the interaction extends to larger distances. From ?950 observations at 330 K with two adatoms, we derive a pair energy which exhibits two attractive and two repulsive regions, thus strongly suggesting an oscillatory structure. The pair energies derived beyond 25 Å are erratic for both Ir-Ir and W-Ir interactions, most probably because of the limited amount of data available. However, this work represents the first time statistically reliable amounts of data have been obtained for two-dimensional pair distributions with only two adatoms on a plane. The nonmonotonic behaviors of adatom-adatom interaction on the smooth W {110} plane are clearly established.

R. Casanova and T. T. Tsong

1980-12-15T23:59:59.000Z

482

Introduction Abstract reflection groups and abstract buildings  

E-Print Network [OSTI]

Introduction Abstract reflection groups and abstract buildings Their geometric realizations Compactly supported cohomology L2 -cohomology Cohomology of Coxeter groups and buildings Mike Davis (work groups and buildings #12;Introduction Abstract reflection groups and abstract buildings Their geometric

Vogtmann, Karen

483

September 8, 2011, HSS/Union Focus Group Work Group Telecom - Work Group Guidance  

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

29-11 Draft 29-11 Draft Collaboration provides an opportunity to serve as an entity that is greater than the sum of its parts. HSS FOCUS GROUP DRAFT PROPOSED WORK GROUP GUIDANCE BACKGROUND: The HSS Focus Group provides a forum for communication and collaboration related to worker health, safety and security among HSS management and staff, labor unions, DOE Programs and stakeholders. Based on the foundation that labor union representatives are an essential source of frontline perspective in identifying, addressing and resolving worker health, safety and security concerns, the Focus Group has served to open lines of communication with worker representatives and provides a vehicle for information exchange, problem solving, building relationships and trust,

484

PDSF Interactive Batch Jobs  

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

Interactive Batch Jobs Interactive Batch Jobs Running Interactive Batch Jobs You cannot login to the PDSF batch nodes directly but you can run an interactive session on a batch node using either qlogin or qsh. This can be useful if you are doing something that is potentially disruptive or if the interactive nodes are overloaded. qlogin will give you an interactive session in the same window as your original session on PDSF, however, you must have your ssh keys in place. Due to system limitations there is a small (but important) difference in the user environment you get when you use qlogin. When you receive a shell prompt with qlogin, your CHOS environment is not set up for you. In order to set up the CHOS environment of your choice you will need to manually chos into the chos environment of your choice:

485

Plasma-wall transition in weakly coUisional G. Manfredi* and S. Devaux^  

E-Print Network [OSTI]

Plasma-wall transition in weakly coUisional plasmas G. Manfredi* and S. Devaux^ *Institut de Abstract. This paper reviews some theoretical and computational aspects of plasma-wall interac- tions model, and are subsequently tested with kinetic simulations. The various regions com- posing the plasma

Paris-Sud XI, Université de

486

Validity of the weakly-nonlinear solution of the Boussinesq-Ostrovsky equation  

E-Print Network [OSTI]

Validity of the weakly-nonlinear solution of the Boussinesq-Ostrovsky equation Dmitry Pelinovsky., in press (2013) D.P. and G. Schneider, Non. Diff. Eqs. Appl. 20, 1277 (2013) #12;Boussinesq-Ostrovsky equation We are concerned here in the regularized Boussinesq-Ostrovsky equation Utt - Uxx = 1 2 (U2 )xx

Pelinovsky, Dmitry

487

CBER-DETR Nevada Coincident and Leading Employment Weak National Recovery Lengthens Nevada's Employment Recession  

E-Print Network [OSTI]

Statistics. The Nevada Coincident Employment Index includes four employment measures ­ household employmentCBER-DETR Nevada Coincident and Leading Employment Indexes1 Weak National Recovery Lengthens Nevada's Employment Recession The Nevada Coincident Employment Index measures the ups and downs of the Nevada economy

Ahmad, Sajjad

488

Search for the weak decays $J/?\\to D^{(*)}_{s}e?_{e}$  

E-Print Network [OSTI]

Using a sample of $2.25\\times 10^8$ $J/\\psi$ events collected with the BESIII detector at the BEPCII collider, we search for the $J/\\psi$ semi-leptonic weak decay $J/\\psi \\to D^{-}_{s} e^{+}\

BESIII collaboration; M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; O. Bondarenko; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. Chelkov; G. Chen; H. S. Chen; H. Y. Chen; J. C. Chen; M. L. Chen; S. J. Chen; X. Chen; X. R. Chen; Y. B. Chen; H. P. Cheng; X. K. Chu; Y. P. Chu; G. Cibinetto; D. Cronin-Hennessy; H. L. Dai; J. P. Dai; D. Dedovich; Z. Y. Deng; A. Denig; I. Denysenko; M. Destefanis; F. De Mori; Y. Ding; C. Dong; J. Dong; L. Y. Dong; M. Y. Dong; S. X. Du; P. F. Duan; J. Z. Fan; J. Fang; S. S. Fang; X. Fang; Y. Fang; L. Fava; F. Feldbauer; G. Felici; C. Q. Feng; E. Fioravanti; C. D. Fu; Q. Gao; Y. Gao; I. Garzia; K. Goetzen; W. X. Gong; W. Gradl; M. Greco; M. H. Gu; Y. T. Gu; Y. H. Guan; A. Q. Guo; L. B. Guo; T. Guo; Y. Guo; Y. P. Guo; Z. Haddadi; A. Hafner; S. Han; Y. L. Han; F. A. Harris; K. L. He; Z. Y. He; T. Held; Y. K. Heng; Z. L. Hou; C. Hu; H. M. Hu; J. F. Hu; T. Hu; Y. Hu; G. M. Huang; G. S. Huang; H. P. Huang; J. S. Huang; X. T. Huang; Y. Huang; T. Hussain; Q. Ji; Q. P. Ji; X. B. Ji; X. L. Ji; L. L. Jiang; L. W. Jiang; X. S. Jiang; J. B. Jiao; Z. Jiao; D. P. Jin; S. Jin; T. Johansson; A. Julin; N. Kalantar-Nayestanaki; X. L. Kang; X. S. Kang; M. Kavatsyuk; B. C. Ke; R. Kliemt; B. Kloss; O. B. Kolcu; B. Kopf; M. Kornicer; W. Kuehn; A. Kupsc; W. Lai; J. S. Lange; M. Lara; P. Larin; C. H. Li; Cheng Li; D. M. Li; F. Li; G. Li; H. B. Li; J. C. Li; Jin Li; K. Li; K. Li; P. R. Li; T. Li; W. D. Li; W. G. Li; X. L. Li; X. M. Li; X. N. Li; X. Q. Li; Z. B. Li; H. Liang; Y. F. Liang; Y. T. Liang; G. R. Liao; D. X. Lin; B. J. Liu; C. L. Liu; C. X. Liu; F. H. Liu; Fang Liu; Feng Liu; H. B. Liu; H. H. Liu; H. H. Liu; H. M. Liu; J. Liu; J. P. Liu; J. Y. Liu; K. Liu; K. Y. Liu; L. D. Liu; Q. Liu; S. B. Liu; X. Liu; X. X. Liu; Y. B. Liu; Z. A. Liu; Zhiqiang Liu; Zhiqing Liu; H. Loehner; X. C. Lou; H. J. Lu; J. G. Lu; R. Q. Lu; Y. Lu; Y. P. Lu; C. L. Luo; M. X. Luo; T. Luo; X. L. Luo; M. Lv; X. R. Lyu; F. C. Ma; H. L. Ma; L. L. Ma; Q. M. Ma; S. Ma; T. Ma; X. N. Ma; X. Y. Ma; F. E. Maas; M. Maggiora; Q. A. Malik; Y. J. Mao; Z. P. Mao; S. Marcello; J. G. Messchendorp; J. Min; T. J. Min; R. E. Mitchell; X. H. Mo; Y. J. Mo; H. Moeini; C. Morales Morales; K. Moriya; N. Yu. Muchnoi; H. Muramatsu; Y. Nefedov; F. Nerling; I. B. Nikolaev; Z. Ning; S. Nisar; S. L. Niu; X. Y. Niu; S. L. Olsen; Q. Ouyang; S. Pacetti; P. Patteri; M. Pelizaeus; H. P. Peng; K. Peters; J. L. Ping; R. G. Ping; R. Poling; Y. N. Pu; M. Qi; S. Qian; C. F. Qiao; L. Q. Qin; N. Qin; X. S. Qin; Y. Qin; Z. H. Qin; J. F. Qiu; K. H. Rashid; C. F. Redmer; H. L. Ren; M. Ripka; G. Rong; X. D. Ruan; V. Santoro; A. Sarantsev; M. Savrié; K. Schoenning; S. Schumann; W. Shan; M. Shao; C. P. Shen; P. X. Shen; X. Y. Shen; H. Y. Sheng; M. R. Shepherd; W. M. Song; X. Y. Song; S. Sosio; S. Spataro; B. Spruck; G. X. Sun; J. F. Sun; S. S. Sun; Y. J. Sun; Y. Z. Sun; Z. J. Sun; Z. T. Sun; C. J. Tang; X. Tang; I. Tapan; E. H. Thorndike; M. Tiemens; D. Toth; M. Ullrich; I. Uman; G. S. Varner; B. Wang; B. L. Wang; D. Wang; D. Y. Wang; K. Wang; L. L. Wang; L. S. Wang; M. Wang; P. Wang; P. L. Wang; Q. J. Wang; S. G. Wang; W. Wang; X. F. Wang; Y. D. Wang; Y. F. Wang; Y. Q. Wang; Z. Wang; Z. G. Wang; Z. H. Wang; Z. Y. Wang; D. H. Wei; J. B. Wei; P. Weidenkaff; S. P. Wen; U. Wiedner; M. Wolke; L. H. Wu; Z. Wu; L. G. Xia; Y. Xia; D. Xiao; Z. J. Xiao; Y. G. Xie; Q. L. Xiu; G. F. Xu; L. Xu; Q. J. Xu; Q. N. Xu; X. P. Xu; L. Yan; W. B. Yan; W. C. Yan; Y. H. Yan; H. X. Yang; L. Yang; Y. Yang; Y. X. Yang; H. Ye; M. Ye; M. H. Ye; J. H. Yin; B. X. Yu; C. X. Yu; H. W. Yu; J. S. Yu; C. Z. Yuan; W. L. Yuan; Y. Yuan; A. Yuncu; A. A. Zafar; A. Zallo; Y. Zeng; B. X. Zhang; B. Y. Zhang; C. Zhang; C. C. Zhang; D. H. Zhang; H. H. Zhang; H. Y. Zhang; J. J. Zhang; J. L. Zhang; J. Q. Zhang; J. W. Zhang; J. Y. Zhang; J. Z. Zhang; K. Zhang; L. Zhang; S. H. Zhang; X. J. Zhang; X. Y. Zhang; Y. Zhang; Y. H. Zhang; Z. H. Zhang; Z. P. Zhang; Z. Y. Zhang; G. Zhao; J. W. Zhao; J. Y. Zhao; J. Z. Zhao; Lei Zhao; Ling Zhao; M. G. Zhao; Q. Zhao; Q. W. Zhao; S. J. Zhao; T. C. Zhao; Y. B. Zhao; Z. G. Zhao; A. Zhemchugov; B. Zheng; J. P. Zheng; W. J. Zheng; Y. H. Zheng; B. Zhong; L. Zhou; Li Zhou; X. Zhou; X. K. Zhou; X. R. Zhou; X. Y. Zhou; K. Zhu; K. J. Zhu; S. Zhu; X. L. Zhu; Y. C. Zhu; Y. S. Zhu; Z. A. Zhu; J. Zhuang; B. S. Zou; J. H. Zou

2014-10-30T23:59:59.000Z

489

Elastodynamic and elastostatic Green tensors for homogeneous weak transversely isotropic media  

Science Journals Connector (OSTI)

......TRANSVERSE ISOTROPY ( W T I ) 3.1 Definitionof WTI We shall consider a weak transversely isotropic medium (hereafter called the WTI medium) with a vertical axis of rotation...I , am"denotes the parameters of the WTI medium, and Aa,,, Au,, and are small......

Václav Vavry?uk

1997-09-01T23:59:59.000Z

490

Global weak solutions to magnetic fluid flows with nonlinear Maxwell-Cattaneo heat transfer law  

E-Print Network [OSTI]

Global weak solutions to magnetic fluid flows with nonlinear Maxwell-Cattaneo heat transfer law F transfer in a magnetic fluid flow under the action of an applied magnetic field. Instead of the usual heat-Cattaneo law, heat transfer, magnetic field, magnetization AMS subject classifications: 76N10, 35Q35. 1

Boyer, Edmond

491

The electric organ discharge (EOD) of weakly electric fish generates transcutaneous electric currents that stimulate  

E-Print Network [OSTI]

2443 The electric organ discharge (EOD) of weakly electric fish generates transcutaneous electric object whose conductivity is different from that of water produces an electric image consisting for the formation of electric images. Rule 1: objects more conductive than water cause a local increase

Grant, Kirsty

492

The long, the short and the weak: the origin of gamma-ray bursts  

Science Journals Connector (OSTI)

...and the weak: the origin of gamma-ray-bursts Tsvi Piran 1 Omer Bromberg 1...the Universe . The origin of gamma-ray bursts (GRBs) is one of the most...the commonly used 2s limit. gamma ray bursts|supernova|neutron stars...

2013-01-01T23:59:59.000Z

493

Kinetic Pathways of Order-Disorder and Order-Order Transitions in Weakly Segregated Microstructured Systems  

Science Journals Connector (OSTI)

The kinetics of hexagonal to disordered and hexagonal to body-centered-cubic phase transitions in weakly segregated, microstructured systems (e.g., diblock copolymers) is studied using a time-dependent Ginzburg-Landau (TDGL) approach. Both computer simulation of the TDGL equation and analysis of a simplified two-mode model reveal nontrivial pathways during the transition.

Shuyan Qi and Zhen-Gang Wang

1996-03-04T23:59:59.000Z

494

The impact of camera optical alignments on weak lensing measures for the Dark Energy Survey  

Science Journals Connector (OSTI)

......weak lensing measures for the Dark Energy Survey Michelle L. Antonik 1 David...with specific reference to the Dark Energy Survey (DES). We compute optics...Suprime-Cam (HSC) survey 1 and the Dark Energy Survey: DES 2 ), telescopes under......

Michelle L. Antonik; David J. Bacon; Sarah Bridle; Peter Doel; David Brooks; Sue Worswick; Gary Bernstein; Rebecca Bernstein; Darren DePoy; Brenna Flaugher; Joshua A. Frieman; Michael Gladders; Gaston Gutierrez; Bhuvnesh Jain; Michael Jarvis; Stephen M. Kent; Ofer Lahav; S.-J. Parker; Aaron Roodman; Alistair R. Walker

2013-01-01T23:59:59.000Z

495

Weak lensing predictions for coupled dark energy cosmologies at non-linear scales  

Science Journals Connector (OSTI)

......models, for forthcoming ground-based [such as Dark Energy Survey (DES)] and space-based (Euclid) weak...lensing (WL) surveys - both a ground-based survey similar to the Dark Energy Survey (DES)1 and a space-based survey, i.e......

Emma Beynon; Marco Baldi; David J. Bacon; Kazuya Koyama; Cristiano Sabiu

2012-06-01T23:59:59.000Z

496

PISA Results and School Mathematics in Finland: strengths, weaknesses and future  

E-Print Network [OSTI]

420 PISA Results and School Mathematics in Finland: strengths, weaknesses and future George Malaty University of Joensuu, Finland, george.malaty@joensuu.fi Abstract The success of Finland in PISA is related of surprising can be related to the results of Finland in the International Mathematical Olympiads (IMO). Since

Spagnolo, Filippo

497

Weak electricity of the nucleon in the chiral quark-soliton model  

Science Journals Connector (OSTI)

The induced pseudotensor constant (weak electricity) of the nucleon is calculated in the framework of the chiral quark-soliton model. This quantity originates from G-parity violation and, hence, is proportional to mu-md. We obtain for mu-md=-5 MeV a value of gT/gA=-0.0038.

Hyun-Chul Kim; Maxim V. Polyakov; Klaus Goeke

1997-05-01T23:59:59.000Z

498

Emergence of temporal-pattern sensitive neurons in the midbrain of weakly electric fish Gymnarchus niloticus  

E-Print Network [OSTI]

Emergence of temporal-pattern sensitive neurons in the midbrain of weakly electric fish Gymnarchus fish, Gymnarchus niloticus, to two stimulus parameters that are critical for its behavior the jamming frequencies of fish's own electric organ and that of a neighbor's. The second parameter is the spatial

Kawasaki, Masashi

499

Weak Bisimilarity between FiniteState Systems and BPA or Normed BPP is  

E-Print Network [OSTI]

Weak Bisimilarity between Finite­State Systems and BPA or Normed BPP is Decidable in Polynomial classes of infinite­state systems: context­free processes (BPA) and normed Basic Parallel Processes on the classes of infinite­state processes definable by the syn­ tax of BPA (Basic Process Algebra) and normed

Ã?ayr, Richard

500

A Chemical Potential "Battery" for Superfluid 4He Weak E. Hoskinson  

E-Print Network [OSTI]

A Chemical Potential "Battery" for Superfluid 4He Weak Links E. Hoskinson , Y. Sato , K. Penanen, similar to a simple battery or voltage source for analogous superconducting devices. We describe here power is balanced by thermal conduction through the walls of the inner volume, heat carried out

Packard, Richard E.