cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
In-beam gamma-ray spectroscopy at the proton dripline: 23Al
Creators: name: Gade, A.
name: Adrich, P.
name: Bazin, D.
name: Bowen, M. D.
name: Brown, B. A.
name: Campbell, C. M.
name: Cook, J. M.
name: Glasmacher, T.
name: Hosier, K.
name: McDaniel, S.
name: McGlinchery, D.
name: Obertelli, A.
name: Riley, L. A.
name: Siwek, K.
name: Tostevin, J. A.
name: Weisshaar, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report on the first in-beam $γ$-ray spectroscopy of \nuc{23}{Al} using two different reactions at intermediate beam energies: inelastic scattering off \nuc{9}{Be} and heavy-ion induced one-proton pickup, \nuc{9}{Be}(\nuc{22}{Mg},\nuc{23}{Al}$+γ$)X, at 75.1 MeV/nucleon. A $γ$-ray transition at 1616(8) keV -- exceeding the proton separation energy by 1494 keV -- was observed in both reactions. From shell model and proton decay calculations we argue that this $γ$-ray decay proceeds from the core-excited $7/2^+$ state to the $5/2^+$ ground state of \nuc{23}{Al}. The proposed nature of this state, $[\nuc{22}{Mg}(2^+_1) \otimes πd_{5/2}]_{7/2+}$, is consistent with the presence of a gamma-branch and with the population of this state in the two reactions.
description: Physics Letters B, accepted
title: Manifeste IIIF de F-Pnm Français 12615
Creators: name: Roger, Kévin
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2024
Subjects: subject: Chansonniers (recueils)
subject: Music
subject: Musicology
subject: IIIF
subject: Middle Ages
subject: Renaissance
subject: Early music

description: Manifeste IIIF généré dans le cadre du projet DIAMMtoIIIF du Cluster 6 Biblissima+.
Ce travail a bénéficié́ d'une aide de l’État gérée par l'Agence Nationale de la Recherche au titre du programme d’Investissements d’avenir portant la référence ANR-21-ESRE-0005 (Biblissima+).
D12.7 Final Plan for Dissemination and Exploitation of Project Results (PDER)
Creators: name: Lindeque, Colin
Publisher: name: SteamBioAfrica
Year: 2024
Subjects: PDER

description: This deliverable builds on the draft PDER (D12.2) as well as the plan that was included within the grant proposal. The plan contains three core elements: knowledge management, dissemination of results and, exploitation of results.
A Bell-Evans-Polanyi principle for molecular dynamics trajectories and its implications for global optimization
Creators: name: Roy, Shantanu
name: Hellmann, Waldemar
name: Goedecker, Stefan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The Bell-Evans-Polanyi principle that is valid for a chemical reaction that proceeds along the reaction coordinate over the transition state is extended to molecular dynamics trajectories that in general do not cross the dividing surface between the initial and the final local minima at the exact transition state. Our molecular dynamics Bell-Evans-Polanyi principle states that low energy molecular dynamics trajectories are more likely to lead into the basin of attraction of a low energy local minimum than high energy trajectories. In the context of global optimization schemes based on molecular dynamics our molecular dynamics Bell-Evans-Polanyi principle implies that using low energy trajectories one needs to visit a smaller number of distinguishable local minima before finding the global minimum than when using high energy trajectories.
Emergency response to environmental incidents on the Texas-Mexico border
Creators: name: Batchelor, Jason Patrick
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: subject: Incident command systems--Mexican-American Border Region
subject: Hazardous substances--Risk assessment--Mexican-American Border Region

description: Emergency response to any large scale environmental incidents on the Texas - Mexico will not be easy. Any large scale incident that crosses jurisdictional boundaries, including the international boundary, may require joint response actions. There are multiple jurisdictions along both sides of the border trying to plan in an area of increased risk and growing threat. The North American Free Trade Agreement resulted in increased trade and movement of hazardous materials in the region and across the border. These hazardous materials present a threat to the growing populations along the border. Local, state and federal governments have identified these risks and prepared contingency plans and procedures to respond in the event of an incident. However there are practical difficulties in implementing these plans. This thesis reviews the emergency management plans and procedures in place at the local, state, federal and international level, as well as the nature of the threat posed by hazardous materials in the region. This thesis uses a hypothetical scenario to illustrate the implementation of these plans and make recommendations for improving them.
Optimal design for kernel interpolation: applications to uncertainty quantification
Creators: name: Narayan, Akil
name: Yan, Liang
name: Zhou, Tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The paper is concerned with classic kernel interpolation methods, in addition to approximation methods that are augmented by gradient measurements. To apply kernel interpolation using radial basis functions (RBFs) in a stable way, we propose a type of quasi-optimal interpolation points, searching from a large set of \textit{candidate} points, using a procedure similar to designing Fekete points or power function maximizing points that use pivot from a Cholesky decomposition. The proposed quasi-optimal points result in a smaller condition number, and thus mitigates the instability of the interpolation procedure when the number of points becomes large. Applications to parametric uncertainty quantification are presented, and it is shown that the proposed interpolation method can outperform sparse grid methods in many interesting cases. We also demonstrate the new procedure can be applied to constructing gradient-enhanced Gaussian process emulators.
Bipotentials for non monotone multivalued operators: fundamental results and applications
Creators: name: Buliga, Marius
name: de Saxce, Gery
name: Vallee, Claude
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 49J53; 49J52; 26B25

description: This is a survey of recent results about bipotentials representing multivalued operators. The notion of bipotential is based on an extension of Fenchel's inequality, with several interesting applications related to non associated constitutive laws in non smooth mechanics, such as Coulomb frictional contact or non-associated Drucker-Prager model in plasticity. Relations betweeen bipotentials and Fitzpatrick functions are described. Selfdual lagrangians, introduced and studied by Ghoussoub, can be seen as bipotentials representing maximal monotone operators. We show that bipotentials can represent some monotone but not maximal operators, as well as non monotone operators. Further we describe results concerning the construction of a bipotential which represents a given non monotone operator, by using convex lagrangian covers or bipotential convex covers.
description: to appear in Acta Applicandae Mathematicae
Project Lyman
Creators: name: McCandliss, Stephan R.
name: Kruk, Jeffrey W.
name: Blair, William P.
name: Kaiser, Mary Elizabeth
name: Feldman, Paul D.
name: Meurer, Gerhardt R.
name: Dixon, William V.
name: Sahnow, David J.
name: Neufeld, David A.
name: Lupu, Roxana E.
name: Fleming, Brian
name: Smee, Stephen A.
name: Andersson, B. G.
name: Moseley, Samuel H.
name: Kutyrev, Alexander S.
name: Li, Mary J.
name: Sonneborn, George
name: Siegmund, Oswald H. W.
name: Vallerga, John V.
name: Welsh, Barry Y.
name: Stiavelli, Massimo
name: Windhorst, Rogier A.
name: Shapley, Alice E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the design of a space mission, Project Lyman, which has the goal of quantifying the ionization history of the universe from the present epoch to a redshift of z ~ 3. Observations from WMAP and SDSS show that before a redshift of z >~ 6 the first collapsed objects, possibly dwarf galaxies, emitted Lyman continuum (LyC) radiation shortward of 912 A, reionizing most of the universe. How LyC escapes from galactic environments, whether it induces positive or negative feedback on the local and global collapse of structures, and the role played by clumping, molecules, metallicity and dust are major unanswered theoretical questions, requiring observational constraint. Numerous intervening Lyman limit systems, which frustrate the detection of LyC from high z objects, thin below z ~ 3 where there are a few objects with apparently very high fesc. At low z there are only controversial detections and a handful of upper limits. A wide-field multi-object spectroscopic survey with moderate spectral and spatial resolution can quantify fesc within diverse spatially resolved galactic environments over redshifts with significant evolution in galaxy assemblage and quasar activity. It can also calibrate LyC escape against Ly-alpha escape, providing an essential tool to JWST for probing the beginnings of reionization. We present calculations showing the evolution of the characteristic apparent magnitude of star-forming galaxy luminosity functions at 900 A, as a function of redshift and assumed escape fraction to determine the required aperture for detecting LyC. We review our efforts to build a pathfinding dual order multi-object spectro/telescope with a (0.5deg)^2 field-of-view, using a GSFC microshutter array, and crossed delay-line micro-channel plate detector.
description: SPIE oral paper 7011-76 presented at Astronomical Telescopes 2008 - 23 -- 28 June Marseille, France, 12 page, 5 figures
Integration and democratization of Zambian agricultural extension
Creators: name: Machila, Margaret Mavis Chinyama
Publisher: name: University of British Columbia
Year: 2010

description: Lifelong education occurs in a combination of formal and non-formal settings throughout an entire lifetime. Educators such as Dewey (1916), the authors of the 1919 Report, and authors of UNESCO position papers during the 1970's emphasized the need for democratic access to educational opportunities which are integrated horizontally across a variety of settings and vertically over a range of ages. An example of the problems caused by the lack of such democratization and integration is found in this study of Zambian agricultural extension. It assesses programs of the Ministry of Agriculture and Water Development in Zambia in terms of procedures relating to staffing, training, physical resources, financing, research and technology. It was found that there is limited integration and democratization of the procedures studied. A much more participatory and co-ordinated approach at several levels is recommended. Well integrated efforts of different agricultural extension providers might better serve all farmers in their struggle to reverse the decline in agricultural production which has occurred in recent years. Further research would assist this process and enhance an understanding of lifelong education.
Meta-stable Vacuum in Spontaneously Broken N=2 Supersymmetric Gauge Theory
Creators: name: Arai, Masato
name: Montonen, Claus
name: Okada, Nobuchika
name: Sasaki, Shin
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider an N=2 supersymmetric SU(2) \times U(1) gauge theory with N_f=2 massless flavors and a Fayet-Iliopoulos (FI) term. In the presence of the FI term, supersymmetry is spontaneously broken at tree level (on the Coulomb branch), leaving a pseudo-flat direction in the classical potential. This vacuum degeneracy is removed once quantum corrections are taken into account. Due to the SU(2) gauge dynamics, the effective potential exhibits a local minimum at the dyon point, where not only supersymmetry but also U(1)_R symmetry is broken, while a supersymmetric vacuum would be realized toward infinity with the runaway behavior of the potential. This local minimum is found to be parametrically long-lived. Interestingly, from a phenomenological point of view, in this meta-stable vacuum the massive hypermultiplets inherent in the theory play the role of the messenger fields in the gauge mediation scenario, when the Standard Model gauge group is embedded into their flavor symmetry.
description: 27 pages, 11 figures, journal reference added, minor modifications in the text
Mr. Joseph Hillman
Creators: name: (:Unas)
Publisher: name: Unknown
Year: 1870
Subjects: East Hampton
Photographs
Cabinet photographs
Portrait photographs
Portraits

description: This image shows a portrait of Mr. Joseph Hillman. This photograph is part of a collection of photographs found in the ceiling of 140A Main Street, now 138, in East Hampton in 1970. This collection was donated by Joan Osborne in April 1995.
The targum (1974:Jan. 3 - 1974:Jan. 31)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1974

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Analysis of optimal portfolio on finite and small time horizons for a stochastic volatility market model
Creators: name: Lin, Minglian
name: SenGupta, Indranil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business
subject: 91G10, 93E20, 60G51

description: In this paper, we consider the portfolio optimization problem in a financial market under a general utility function. Empirical results suggest that if a significant market fluctuation occurs, invested wealth tends to have a notable change from its current value. We consider an incomplete stochastic volatility market model, that is driven by both a Brownian motion and a jump process. At first, we obtain a closed-form formula for an approximation to the optimal portfolio in a small-time horizon. This is obtained by finding the associated Hamilton-Jacobi-Bellman integro-differential equation and then approximating the value function by constructing appropriate super-solution and sub-solution. It is shown that the true value function can be obtained by sandwiching the constructed super-solution and sub-solution. We also prove the accuracy of the approximation formulas. Finally, we provide a procedure for generating a close-to-optimal portfolio for a finite time horizon.
Maximal Commutative Subalgebras Invariant for CP-Maps: (Counter-)Examples
Creators: name: Bhat, B. V. Rajarama
name: Fagnola, Franco
name: Skeide, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55, 46L53, 60J25, 81S25

description: We solve, mainly by counterexamples, many natural questions regarding maximal commutative subalgebras invariant under CP-maps or semigroups of CP-maps on a von Neumann algebra. In particular, we discuss the structure of the generators of norm continuous semigroups on B(G) leaving a maximal commutative subalgebra invariant and show that there exists Markov CP-semigroups on M_d without invariant maximal commutative subalgebras for any d>2.
description: After the elemenitation in Version 2 of a false class of examples in Version 1, we now provide also correct examples for unital CP-maps and Markov semigroups on M_d for d>2 without invariant masas
Local structural changes in paramagnetic and charge ordered phases of Sm0.2Pr0.3Sr0.5MnO3: An EXAFS Study
Creators: name: Priolkar, K. R.
name: Sarode, Vishwajeet Kulkarni P. R.
name: Emura, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Sm{0.5-x}Pr{x}Sr{0.5}MnO{3} exhibits variety of ground states as x is varied from 0 to 0.5. At an intermediate doping of x = 0.3 a charge-ordered CE type antiferromagnetic insulating (AFI) ground state is seen. The transition to this ground state is from a paramagnetic insulating (PMI) phase through a ferromagnetic metallic phase (FMM). Local structures in PMI and AFI phases of x = 0.3 sample have been investigated using Pr K-edge and Sm K-edge Extended X-ray Absorption Fine Structure (EXAFS). It can be seen that the tilting and rotation of the MnO6 octahedra about the b-axis are responsible for the charge ordered CE-type antiferromagnetic ground state at low temperatures. In addition a shift in the position of the rare earth ion along the c-axis has to be considered to account for observed distribution of bond distances around the rare earth ion.
Amplification of polarization NOON states
Creators: name: Vitelli, Chiara
name: Spagnolo, Nicolo'
name: Sciarrino, Fabio
name: De Martini, Francesco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: NOON states are path entangled states which can be exploited to enhance phase resolution in interferometric measurements. In the present paper we analyze the quantum states obtained by optical parametric amplification of polarization NOON states. First we study, theoretically and experimentally, the amplification of a 2-photon state by a collinear Quantum Injected Optical Parametric Amplifier (QIOPA). We compared the stimulated emission regime with the spontaneous one, studied by Sciarrino et al. (PRA 77, 012324), finding comparable visibilities between the two cases but an enhancement of the signal in the stimulated case. As a second step, we show that the collinear amplifier cannot be successfully used for amplifying N-photon states with N>2 due to the intrinsic λ/4 oscillation pattern of the crystal. To overcome this limitation, we propose to adopt a scheme for the amplification of a generic state based on a non-collinear QIOPA and we show that the state obtained by the amplification process preserves λ/N feature and exhibits a high resilience to losses. Furthermore, an asymptotic unity visibility can be obtained when correlation functions with sufficiently high order M are analyzed.
description: 10 pages, 9 figures
Multifractality in Rotational Percolation Models
Creators: name: Sinha, Santanu
name: Santra, S. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In rotationally constrained percolation models, a site of a percolation cluster could be occupied more than once from different directions due to the nature of the rotational constraint. A state variable $s_i$ is assigned to each lattice site whose value corresponds to the number times it has been visited during the growth of a cluster. It is proposed here that the percolation transition and the multifractal aspects of infinite percolation clusters under rotational constraint can be studied defining suitable measures in terms of the state variable $s_i$. This method does not require to introduce any external agency like an electric current or a random walker in order to explore multifractality as in the case of ordinary percolation. The state variable representation also describes the universality class of the percolation models appropriately.
description: 18 pages, 6 figures
Review: Alphonse Mucha, Le Pater. Le Grand Œuvre d’Alphonse Mucha, ed. by Tomoko Sato (Paris: Éditions RMN, 2023)
Creators: name: Kunkel, Sam
Publisher: name: Volupté
Year: 2023

description: Volupté, Vol. 6 No. 2 (2023): Decadence and Fashion
Characteristics of Switchable Superconducting Flux Transformer with DC Superconducting Quantum Interference Device
Creators: name: Shimazu, Y.
name: Niizeki, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have investigated the flux transfer characteristics of a switchable flux transformer comprising a superconducting loop and a DC superconducting quantum interference device (DC-SQUID). This system can be used to couple multiple flux qubits with a controllable coupling strength. Its characteristics were measured using a flux input coil and a DC-SQUID for readout coupled to the transformer loop in a dilution refrigerator. The observed characteristics are consistent with the calculation results. We have demonstrated the reversal of the slope of the characteristics and the complete switching off of the transformer, which are useful features for its application as a controllable coupler for flux qubits.
description: 5 pages, 8 figures
LyST: a Scalar-Tensor Theory of Gravity on Lyra Manifold
Creators: name: Cuzinatto, R. R.
name: de Morais, E. M.
name: Pimentel, B. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a scalar-tensor theory of gravity on a torsion-free and metric compatible Lyra manifold. This is obtained by generalizing the concept of physical reference frame by considering a scale function defined over the manifold. The choice of a specific frame induces a local base, naturally non-holonomic, whose structure constants give rise to extra terms in the expression of the connection coefficients and in the expression for the covariant derivative. In the Lyra manifold, transformations between reference frames involving both coordinates and scale change the transformation law of tensor fields, when compared to those of the Riemann manifold. From a direct generalization of the Einstein-Hilbert minimal action coupled with a matter term, it was possible to build a Lyra invariant action, which gives rise to the associated Lyra Scalar-Tensor theory of gravity (LyST), with field equations for $g_{μν}$ and $ϕ$. These equations have a well-defined Newtonian limit, from which it can be seen that both metric and scale play a role in the description gravitational interaction. We present a spherically symmetric solution for the LyST gravity field equations. It dependent on two parameters $m$ and $r_{L}$, whose physical meaning is carefully investigated. We highlight the properties of LyST spherically symmetric line element and compare it to Schwarzchild solution.
description: 14 pages; 2 figures; to be published in Phys. Rev. D
Identifying Ransomware Actors in the Bitcoin Network
Creators: name: Dalal, Siddhartha
name: Wang, Zihe
name: Sabharwal, Siddhanth
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Due to the pseudo-anonymity of the Bitcoin network, users can hide behind their bitcoin addresses that can be generated in unlimited quantity, on the fly, without any formal links between them. Thus, it is being used for payment transfer by the actors involved in ransomware and other illegal activities. The other activity we consider is related to gambling since gambling is often used for transferring illegal funds. The question addressed here is that given temporally limited graphs of Bitcoin transactions, to what extent can one identify common patterns associated with these fraudulent activities and apply them to find other ransomware actors. The problem is rather complex, given that thousands of addresses can belong to the same actor without any obvious links between them and any common pattern of behavior. The main contribution of this paper is to introduce and apply new algorithms for local clustering and supervised graph machine learning for identifying malicious actors. We show that very local subgraphs of the known such actors are sufficient to differentiate between ransomware, random and gambling actors with 85% prediction accuracy on the test data set.
Statistics of the total number of collisions and the ordering time in a freely expanding hard-point gas
Creators: name: Sabhapandit, Sanjib
name: Bena, Ioana
name: Majumdar, Satya N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a Jepsen gas of $N$ hard-point particles undergoing free expansion on a line, starting from random initial positions of the particles having random initial velocities. The particles undergo binary elastic collisions upon contact and move freely in-between collisions. After a certain ordering time $T_{o}$, the system reaches a ``fan'' state where all the velocities are completely ordered from left to right in an increasing fashion and there is no further collision. We compute analytically the distributions of (i) the total number of collisions and (ii) the ordering time $T_{o}$. We show that several features of these distributions are universal.
description: 18 pages, 5 figures
Effect of stand-off distance and spatial resolution on the pressure impact of near-wall vapor bubble collapses
Creators: name: Trummler, Theresa
name: Schmidt, Steffen J.
name: Adams, Nikolaus A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider the collapse behavior of cavitation bubbles near walls under high ambient pressure conditions. Generic configurations with different stand-off distances are investigated by numerical simulation using a fully compressible two-phase flow solver including phase change. The results show that the stand-off distance has significant effects on collapse dynamics, micro-jet formation, rebound, and maximum wall pressure. A relation between cavitation induced material damage and corresponding collapse mechanisms is obtained from pressure-impact data at the wall. We analyze the resolution dependence of collapse and rebound and the observed maximum pressure distributions. The comparison of the results on six different grid resolutions shows that main collapse features are already captured on the coarsest resolution, while the peak pressures are strongly resolution dependent.
description: Accepted for publication in the International Journal of Multiphase Flow, 28 pages, 13 figures
Unparticle Physics and A_{FB}^b on the Z pole
Creators: name: Luo, Mingxing
name: Wu, Wei
name: Zhu, Guohuai
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An attempt has been made to address the 3σanomaly of the forward-backward asymmetry of b quark in LEP data via an unparticle sector. For most part of the parameter space except certain particular regions, the anomaly could not be explained away plausibly, when constraints from other LEP observables are taken into account.
description: Version to appear in Phys. Lett. B. 13 pages, 5 figures
Does the three site Higgsless model survive the electroweak precision tests at loop?
Creators: name: Abe, Tomohiro
name: Matsuzaki, Shinya
name: Tanabashi, Masaharu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We complete the list of one loop renormalization group equations and matching conditions relevant for the computation of the electroweak precision parameters $S$ and $T$ in the three site Higgsless model. We obtain one-loop formulas for $S$ and $T$ expressed in terms of physical observables such as the KK gauge boson mass $M_{W'}$, the KK fermion mass $M$, and the KK gauge boson ($W'$) couplings with light quarks and leptons $g_{W'ff}$. It is shown that these physical observables, $M_{W'}$, $M$ and $g_{W'ff}$ are severely constrained by the electroweak precision data. Unlike the tree level analysis on the ideally delocalized fermion, we find that perfect fermiophobity of $W'$ is ruled out by the precision data. We also study the cutoff dependence of our analysis. Although the model is non-renormalizable, the dependence on the cutoff parameter $Λ$ is shown to be non-significant.
description: 13pages, 5figures, minor corrections made, references added
Coulomb scattering for scalar field in Scr\" odinger picture
Creators: name: Cosmin, Crucean
name: Radu, Racoceanu
name: Adrian, Pop
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The scattering of a charged scalar field on Coulomb potential on de Sitter space-time is studied using the solution of the free Klein-Gordon equation. We find that the scattering amplitude is independent of the choice of the picture and in addition the total energy is conserved in the scattering process.
description: 7 pages, no figures
PHENIX Measurement of High-$p_T$ Hadron-hadron and Photon-hadron Azimuthal Correlations
Creators: name: Jin, J
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: High-$p_T$ hadron-hadron correlations have been measured with the PHENIX experiment in $\Cu$ and $\pp$ collisions at $\sqrt{s_{NN}}=200$ GeV. A comparison of the jet widths and yields between the two colliding systems allows us to study the medium effect on jets. We also present a first measurement of direct photon-hadron correlations in $\Au$ and $\pp$ collisions. We find that the near-side yields are consistent with zero in both systems. By comparing the jet yields on the away side, we observe a suggestion of the expected suppression of hadrons associated with photons in $\Au$ collisions.
description: 5 pages, proceeding for parallel talk on Quark Matter 2006
Administrators' perceptions of the outcomes of implementing three provincial policies on community college governance in British Columbia
Creators: name: Mitchell, Alan Robert
Publisher: name: University of British Columbia
Year: 2010

description: Recent students of policy have devoted much attention to the analysis o-f policy implementation, describing the changes that occur during the implementation of policy in various ways. This is another such study, the purpose of which was to determine how administrators of community colleges perceived the outcomes of implementing three provincial policies concerned with governance of the college system in British Columbia. The provincial Government, through the Minister and Ministry staff, was the policy formulator, community college governance was the policy topic, and community college system administrators were the implementors. A subsidiary purpose is to determine what discrepancies, if any, existed between the policies' intentions, and the outcomes o-f those policies as perceived by the implementors. Guided by a conceptual framework developed from the literature on policy implementation and based on Easton's (1965B) political systems theory, a case study method was used to collect and analyse the data. The documented and perceived intentions of formulators in relation to the three policy initiatives examined were reasonably congruous, but only two of the policies were perceived to be implemented in a way that corresponded at all closely to the policy intentions. From an analysis of the perceptions of policy implementors, a number of different outcomes emerged which did not align with the intentions of those who formulated the policies. The following major conclusions were reached. 1 Governance of the community college system in B.C. was perceived to have become more simplified and efficient as a result of the policies. 2 Administrators perceived that decision—making moved from the Councils to the Minister and the Ministry office, thus providing a more centralised governance structure. 3 There appeared to be an interesting connection (strong relationship) between administrators' perceptions of intent and their perceptions of outcomes. 4 It was perceived that a lack of trust existed between the Ministry and various interest groups involved in the governance of the college system. The findings have practical, theoretical and methodological implications, including recommendations for future policy-makers, some additions to the body of knowledge on policy implementation, and some suggestions for further research on this topic.
Structures of the reduced niobium oxides Nb12O29 and Nb22O54
Creators: name: McQueen, T.
name: Xu, Q.
name: Andersen, E. N.
name: Zandbergen, H. W.
name: Cava, R. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The crystal structure of Nb22O54 is reported for the first time, and the structure of orthorhombic Nb12O29 is reexamined, resolving previous ambiguities. Single crystal x-ray and electron diffraction were employed. These compounds were found to crystallize in the space groups P2/m (a = 15.7491(2) A, b = 3.8236(3) A, c = 17.8521(2) A, beta = 102.029(3)) and Cmcm (a = 3.8320(2) A, b = 20.7400(9) A, c = 28.8901(13) A) respectively and share a common structural unit, a 4x3 block of corner sharing NbO6 octahedra. Despite different constraints imposed by symmetry these blocks are very similar in both compounds. Within a block, it is found that the niobium atoms are not located in the centers of the oxygen octahedra, but rather are displaced inward toward the center of the block forming an apparent antiferroelectric state. Bond valence sums and bond lengths do not show the presence of charge ordering, suggesting that all 4d electrons are delocalized in these compounds at the temperature studied, T = 200 K.
description: 19 pages, 4 figures, accepted to J. Sol. St. Chem
Characteristics of Deterministic and Stochastic Sandpile Models in a Rotational Sandpile Model
Creators: name: Santra, S. B.
name: Chanu, S. Ranjita
name: Deb, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Rotational constraint representing a local external bias generally has non-trivial effect on the critical behavior of lattice statistical models in equilibrium critical phenomena. In order to study the effect of rotational bias in a out of equilibrium situation like self-organized criticality, a new two state ``quasi-deterministic'' rotational sandpile model is developed here imposing rotational constraint on the flow of sand grains. An extended set of new critical exponents are found to characterize the avalanche properties at the non-equilibrium steady state of the model. The probability distribution functions are found to obey usual finite size scaling supported by negative time autocorrelation between the toppling waves. The model exhibits characteristics of both deterministic and stochastic sandpile models.
description: 27 pages, 11 figures
Motivational orientations of adult immigrants
Creators: name: Petersen, Thomas B.
Publisher: name: University of British Columbia
Year: 2010

description: Historically, immigrants to Canada arrive, learn the language, search for satisfying work and lead productive, meaningful lives. However, the barriers are immense. Recently, Vancouver Community College at the King Edward Campus has tried to meet the needs of adult immigrant learners. The diagnosis of learners needs has a high priority in adult education. The general form of the Education Participation Scale (EPS) describes reasons why people partake in adult education programs. However, because the data collected to complete the general EPS was drawn from a middle class population, it did not reflect the reasons tendered by disadvantaged learners. Also, the language used on the instrument was too difficult. Subjects in this study were Adult Basic Education (A.B.E.) students, enrolled in programs at Vancouver Community College, predominately at King Edward Campus. During the first step 150 students were asked about why they were enrolled. These reasons were listed, edited and combined with the general form of the E.P.S. Care was taken to ensure that the items and the instructions could be read at a grade seven level. The 120 item instrument was then administered to a different group of 257 participants at the college where the items had originated. Factor analyses produced a seven factor solution of 42 items with each factor containing 6 items. The seven factors are: Communication Improvement; Social Contact; Educational Preparation; Professional Advancement; Family Togetherness; Social Stimulation; Cognitive Interest. For test retest reliability purposes the instrument was administered twice (with a four week interval between administrations) to 63 participants. Reliability coefficients for each factor, as well as the entire scale, were calculated. The instrument was deemed to be reliable over time. The motivational orientations of people from Canada were compared to those from the Middle East, Asia, East Europe, West and South Europe, Latin and South America and other places. There were significant differences in the mean scores (by country of birth) on the Communication Improvement, Professional Advancement, Social contact and Family Togetherness factors. It appears that a case can be made for arranging unique educational experiences for people with different motivational profiles.
Simulation via Direct Computation of Partition Functions
Creators: name: Zhang, Cheng
name: Ma, Jianpeng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper, we demonstrate the efficiency of simulations via direct computation of the partition function under various macroscopic conditions, such as different temperatures or volumes. The method can compute partition functions by flattening histograms, through the Wang-Landau recursive scheme, outside the energy space. This method offers a more general and flexible framework for handling various types of ensembles, especially the ones in which computation of the density of states is not convenient. It can be easily scaled to large systems, and it is flexible in incorporating Monte Carlo cluster algorithms or molecular dynamics. High efficiency is shown in simulating large Ising models, in finding ground states of simple protein models, and in studying the liquid-vapor phase transition of a simple fluid. The method is very simple to implement and we expect it to be efficient in studying complex systems with rugged energy landscapes, e.g., biological macromolecules.
description: 10 pages, 3 figures, 2 tables; reference added, minor clarifications;
The targum (1974:Feb. 1 - 1974:Feb. 28)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1974

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Thermoelectric properties of Bi2O2Se single crystals
Creators: name: Wang, Jialu
name: Hu, Wanghua
name: Lou, Zhefeng
name: Xu, Zhuokai
name: Yang, Xiaohui
name: Wang, Tao
name: Lin, Xiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bismuth oxyselenide (Bi$_2$O$_2$Se) attracts great interest as a potential n-type complement to p-type thermoelectric oxides in practical applications. Previous investigations were generally focused on polycrystals. Here, we performed a study on the thermoelectric properties of Bi$_2$O$_2$Se single crystals. Our samples exhibit electron mobility as high as 250 cm$^2.$V$^{-1}$.s$^{-1}$ and thermal conductivity as low as $2$ W.m$^{-1}$.K$^{-1}$ near room temperature. The maximized figure of merit is yielded to be 0.188 at 390 K, higher than that of polycrystals. Consequently, a rough estimation of the phonon mean free path ($\ell_\textrm{ph}$) from the kinetic model amounts to 12 $Å$ at 390 K and follows a $T^{-1}$ behavior. An extrapolation of $\ell_\textrm{ph}$ to higher temperatures indicates that this system approaches the Ioffe-Regel limit at about 1100 K. In light of the phonon dispersions, we argue that the ultralow $\ell_\textrm{ph}$ is attributed to intense anharmonic phonon-phonon scattering, including Umklapp process and acoustic to optical phonon scattering. Our results suggest that single crystals provide a further improvement of thermoelectric performance of Bi$_2$O$_2$Se.
description: 6 pages, 4 figures
Layers of Clothing in Hjalmar Söderberg’s Writing: Translations of ‘The Fur Coat’ (1898) and ‘A Grey Waistcoat or Justice in Munich’ (1913) with an Introduction
Creators: name: Chapot, Laura Alice
Publisher: name: Volupté
Year: 2023

description: Volupté, Vol. 6 No. 2 (2023): Decadence and Fashion
Vector field theories in cosmology
Creators: name: Tartaglia, A.
name: Radicella, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently proposed theories based on the cosmic presence of a vectorial field are compared and contrasted. In particular the so called Einstein aether theory is discussed in parallel with a recent proposal of a strained space-time theory (Cosmic Defect theory). We show that the latter fits reasonably well the cosmic observed data with only one, or at most two, adjustable parameters, whilst other vector theories use much more. The Newtonian limits are also compared. Finally we show that the CD theory may be considered as a special case of the aether theories, corresponding to a more compact and consistent paradigm.
description: 19 pages, 1 figure, to appear on Phys. Rev. D
Leading order analysis of neutrino induced dimuon events in the CHORUS experiment
Creators: name: The CHORUS Collaboration
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a leading order QCD analysis of a sample of neutrino induced charged-current events with two muons in the final state originating in the lead-scintillating fibre calorimeter of the CHORUS detector. The results are based on a sample of 8910 neutrino and 430 antineutrino induced opposite-sign dimuon events collected during the exposure of the detector to the CERN Wide Band Neutrino Beam between 1995 and 1998. % with $E_{μ1},E_{μ2} > 5$ GeV and $Q^2 > 3$ GeV$^2$ collected %between 1995 and 1998. The analysis yields a value of the charm quark mass of $\mc = (1.26\pm 0.16 \pm 0.09) \GeVcc $ and a value of the ratio of the strange to non-strange sea in the nucleon of $κ= 0.33 \pm 0.05 \pm 0.05$, improving the results obtained in similar analyses by previous experiments.
description: Submitted to Nuclear Physics B
Algebraic K-theory of hyperbolic 3-simplex reflection groups
Creators: name: Lafont, J. -F.
name: Ortiz, I. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: K-Theory and Homology (math.KT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: A hyperbolic 3-simplex reflection group is a Coxeter group arising as a lattice in the isometry group of hyperbolic 3-space, with fundamental domain a geodesic simplex (possibly with some ideal vertices). The classification of these groups is known, and there are exactly 9 cocompact examples, and 23 non-cocompact examples. We provide a complete computation of the lower algebraic K-theory of the integral group ring of all the hyperbolic 3-simplex reflection groups.
description: 33 pages, 2 figures, 7 tables
Mosaic spin models with topological order
Creators: name: Yang, S.
name: Zhou, D. L.
name: Sun, C. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a class of two-dimensional spin models with the Kitaev-type couplings in mosaic structure lattices to implement topological orders. We show that they are exactly solvable by reducing them to some free Majorana fermion models with gauge symmetries. The typical case with a 4-8-8 close packing is investigated in detail to display the quantum phases with Abelian and non-Abelian anyons. Its topological properties characterized by Chern numbers are revealed through the edge modes of its spectrum.
description: 4 pages, 3 figures. Final version to appear in Phys. Rev. B as a Rapid Communication
Teleparallel geometries not characterized by their scalar polynomial torsion invariants
Creators: name: McNutt, D. D.
name: Coley, A. A.
name: Hoogen, R. J. van den
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A teleparallel geometry is an n-dimensional manifold equipped with a frame basis and an independent spin connection. For such a geometry, the curvature tensor vanishes and the torsion tensor is non-zero. A straightforward approach to characterizing teleparallel geometries is to compute scalar polynomial invariants constructed from the torsion tensor and its covariant derivatives. An open question has been whether the set of all scalar polynomial torsion invariants, $\mathcal{I}_T$ uniquely characterize a given teleparallel geometry. In this paper we show that the answer is no and construct the most general class of teleparallel geometries in four dimensions which cannot be characterized by $\mathcal{I}_T$. As a corollary we determine all teleparallel geometries which have vanishing scalar polynomial torsion invariants.
description: 3o pages, 1 figure
String networks as tropical curves
Creators: name: Ray, Koushik
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A prescription for obtaining supergravity solutions for planar (p,q)-string networks is presented, based on earlier results. It shows that networks may be looked upon as tropical curves emerging as the spine of the amoeba of a holomorphic curve in M-theory. The Kaehler potential of supergravity is identified with the corresponding Ronkin function. Implications of this identification in counting dyons is discussed.
description: 9 pages, 2 pictures. 1 Reference added