cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coalition Formation in Simple Games: The Semistrict Core
Creators: name: Dimitrov, Dinko
name: Haake, Claus-Jochen
name: Dimitrov, Dinko
name: Haake, Claus-Jochen
Publisher: name: Unknown
Year: 2006
Subjects: Political Economy

description: We consider the class of proper monotonic simple games and study coalition formation when an exogenous share vector and a solution concept are combined to guide the distribution of coalitional worth. Using a multiplicative composite solution, we induce players' preferences over coalitions in a hedonic game, and present conditions under which the semistrict core of the game is nonempty.
Supersymmetrization of the Radiation Damping
Creators: name: Mendes, A. C. R.
name: Oliveira, W.
name: Neves, C.
name: Takakura, F. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a supersymmetrized version of the model to the radiation damping \cite{03} introduced by the present authors \cite{ACWF}. We dicuss its symmetries and the corresponding conserved Noether charges. It is shown this supersymmetric version provides a supersymmetric generalization of the Galilei algebra obtained in \cite{ACWF}. We have shown that the supersymmetric action can be splited into dynamically independent external and internal sectors.
description: 9 pages
Spatiotemporal entanglement in a noncollinear optical parametric amplifier
Creators: name: La Volpe, L.
name: De, S.
name: Kolobov, M. I.
name: Parigi, V.
name: Fabre, C.
name: Treps, N.
name: Horoshko, D. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the generation of two entangled beams of light in the process of single-pass type-I noncollinear frequency degenerate parametric downconversion with an ultrashort pulsed pump. We find the spatio-temporal squeezing eigenmodes and the corresponding squeezing eigenvalues of the generated field both numerically and analytically. The analytical solution is obtained by modeling the joint spectral amplitude of the field by a Gaussian function in curvilinear coordinates. We show that this method is highly efficient and is in a good agreement with the numerical solution. We also reveal that when the total bandwidth of the generated beams is sufficiently high, the modal functions cannot be factored into a spatial and a temporal parts, but exhibit a spatio-temporal coupling, whose strength can be increased by shortening the pump.
description: accepted version, 19 pages, 10 figures
On the Flavour Structure of Anomaly-free Hidden Photon Models
Creators: name: Bauer, Martin
name: Foldenauer, Patrick
name: Mosny, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Extensions of the Standard Model with an Abelian gauge group are constrained by gauge anomaly cancellation, so that only a limited number of possible charge assignments is allowed without the introduction of new chiral fermions. For flavour universal charges, couplings of the associated hidden photon to Standard Model fermions are flavour conserving at tree-level. We show explicitly that even the flavour specific charge assignments allowed by anomaly cancellation condition lead to flavour conserving tree-level couplings of the hidden photon to quarks and charged leptons \emph{if} the CKM or PMNS matrix can be successfully reconstructed. Further, loop-induced flavour changing couplings are strongly suppressed. As a consequence, the structure of the Majorana mass matrix is constrained and flavour changing tree-level couplings of the hidden photon to neutrino mass eigenstates are identified as a means to distinguish the $U(1)_{B-L}$ gauge boson from any other anomaly-free extension of the Standard Model without new chiral fermions. We present a comprehensive analysis of constraints and projections for future searches for a $U(1)_{B-3L_i}$ gauge boson, calculate the reach of resonance searches in $B$ meson decays and comment on the implications for non-standard neutrino interactions.
description: 13 pages, 5 figures, 4 tables; v2: updated references, corrected COHERENT limit, matches published version
Linguistic Materials on Languages of New Caledonia
Creators: name: Gonari, Anna
name: Nimbaye, Hélène
name: Pwaili, Moïse
name: Tutugoro, Michel
name: Vaiadimoin, Jean-Claude
name: X, Aman
name: Lionnet, Florian
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020

description: Sound recordings and associated ELAN/TextGrid files of elicitation and for measurements of oral/nasal airflow
Entanglement entropy and the first law at third order for boosted black branes
Creators: name: Maulik, Sabyasachi
name: Singh, Harvendra
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Gauge/gravity duality relates an AdS black hole with uniform boost with a boosted strongly-coupled CFT at finite temperature. We study the perturbative change in holographic entanglement entropy for strip sub-region in such gravity solutions up to third order and try to formulate a first law of entanglement thermodynamics including higher order corrections. The first law receives important contribution from an entanglement chemical potential in presence of boost. We find that suitable modifications to the entanglement temperature and entanglement chemical potential are required to account for higher order corrections. The results can be extended to non-conformal cases and AdS plane wave background.
description: 20 pages, 4 figures; typos in equations (2.4), (5.2) and (6.2) corrected
Reconstructing the geometric structure of a Riemannian symmetric space from its Satake diagram
Creators: name: Klein, Sebastian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C35; 53B20; 17B20; 17-08

description: The local geometry of a Riemannian symmetric space is described completely by the Riemannian metric and the Riemannian curvature tensor of the space. In the present article I describe how to compute these tensors for any Riemannian symmetric space from the Satake diagram, in a way that is suited for the use with computer algebra systems. As an example application, the totally geodesic submanifolds of the Riemannian symmetric space SU(3)/SO(3) are classified. The submission also contains an example implementation of the algorithms and formulas of the paper as a package for Maple 10, the technical documentation for this implementation, and a worksheet carrying out the computations for the space SU(3)/SO(3) used in the proof of Proposition 6.1 of the paper.
description: 23 pages, also contains two Maple worksheets and technical documentation
On convergence of the cavity and Bolthausen's TAP iterations to the local magnetization
Creators: name: Chen, Wei-Kuo
name: Tang, Si
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The cavity and TAP equations are high-dimensional systems of nonlinear equations of the local magnetization in the Sherrington-Kirkpatrick model. In the seminal work [Comm. Math. Phys., 325(1):333-366, 2014], Bolthausen introduced an iterative scheme that produces an asymptotic solution to the TAP equations if the model lies inside the Almeida-Thouless transition line. However, it was unclear if this asymptotic solution coincides with the local magnetization. In this work, motivated by the cavity equations, we introduce a new iterative scheme and establish a weak law of large numbers. We show that our new scheme is asymptotically the same as the so-called Approximate Message Passing algorithm, a generalization of Bolthausen's iteration, that has been popularly adapted in compressed sensing, Bayesian inferences, etc. Based on this, we confirm that our cavity iteration and Bolthausen's scheme both converge to the local magnetization as long as the overlap is locally uniformly concentrated.
description: 33 pages, 1 figure. Title changed and Introduction and Main results are restructured
Gravitational microlensing of quasar Broad Line Regions: the influence of fractal structures
Creators: name: Lewis, Geraint F.
name: Ibata, Rodrigo A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent models for the emission clouds within the Broad Line Region of quasars suggest that they are due to transient overdensities within an overall turbulent medium. If this were the case, the broad line emission would spatially appear fractal, possessing structure on a range of scales. This paper examines the influence of such fractal structure when a quasar is microlensed by a population of intervening masses. It is found that while the highest fractal levels can undergo significant microlensing magnification, when these light curves are superimposed to create an emission line profile, the resultant emission line profile remains relatively constant for physical models of the Broad Line Region. It is concluded that the detection of the possible fractal structure of Broad Line Regions via gravitational microlensing is not practical.
description: 6 pages, accepted for publication in MNRAS (note, resolution of figures reduced to size restrictions)
Spin-Dependent Cyclotron Decay Rates in Strong Magnetic Fields
Creators: name: Baring, Matthew G.
name: Gonthier, Peter L.
name: Harding, Alice K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cyclotron decay and absorption rates have been well studied in the literature, focusing primarily on spectral, angular and polarization dependence. Astrophysical applications usually do not require retention of information on the electron spin state, and these are normally averaged in obtaining the requisite rates. In magnetic fields, higher order quantum processes such as Compton scattering become resonant at the cyclotron frequency and its harmonics, with the resonances being formally divergent. Such divergences are usually eliminated by accounting for the finite lifetimes of excited Landau states. This practice requires the use of spin-dependent cyclotron rates in order to obtain accurate determinations of process rates very near cyclotronic resonances, the phase space domain most relevant for certain applications to pulsar models. This paper develops previous results in the literature to obtain compact analytic expressions for cyclotron decay rates/widths in terms of a series of Legendre functions of the second kind; these expressions can be expediently used in astrophysical models. The rates are derived using two popular eigenstate formalisms, namely that due to Sokolov and Ternov, and that due to Johnson and Lippmann. These constitute two sets of eigenfunctions of the Dirac equation that diagonalize different operators, and accordingly yield different spin-dependent cyclotron rates. This paper illustrates the attractive Lorentz transformation characteristics of the Sokolov and Ternov formulation, which is another reason why it is preferable when electron spin information must be explicitly retained.
description: 11 pages, 2 embedded figures, apjgalley format, To appear in The Astrophysical Journal, Vol 630, September 1, 2005 issue
Finite frequency quantum noise in an interacting mesoscopic conductor
Creators: name: Hekking, F. W. J.
name: Pekola, J. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a quantum calculation based on scattering theory of the frequency dependent noise of current in an interacting chaotic cavity. We include interactions of the electron system via long range Coulomb forces between the conductor and a gate with capacitance $C$. We obtain explicit results exhibiting the two time scales of the problem, the cavity's dwell time $τ_D$ and the $RC$-time $τ_C$ of the cavity {\em vis à vis} the gate. The noise shows peculiarities at frequencies of the order and exceeding the inverse charge relaxation time $τ^{-1} = τ^{-1}_D+τ^{-1}_C $.
Topologies and Laplacian spectra of a deterministic uniform recursive tree
Creators: name: Zhang, Zhongzhi
name: Zhou, Shuigeng
name: Qi, Yi
name: Guan, Jihong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The uniform recursive tree (URT) is one of the most important models and has been successfully applied to many fields. Here we study exactly the topological characteristics and spectral properties of the Laplacian matrix of a deterministic uniform recursive tree, which is a deterministic version of URT. Firstly, from the perspective of complex networks, we determine the main structural characteristics of the deterministic tree. The obtained vigorous results show that the network has an exponential degree distribution, small average path length, power-law distribution of node betweenness, and positive degree-degree correlations. Then we determine the complete Laplacian spectra (eigenvalues) and their corresponding eigenvectors of the considered graph. Interestingly, all the Laplacian eigenvalues are distinct.
description: 7 pages, 1 figures, definitive version accepted for publication in EPJB
Lepton Flavor Violation within a realistic SO(10)/G(224) Framework
Creators: name: Babu, K. S.
name: Pati, Jogesh C.
name: Rastogi, Parul
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Lepton flavor violation (LFV) is studied within a realistic unified framework, based on supersymmetric SO(10) or an effective G(224) = SU(2)_L\times SU(2)_R\times SU(4)^c symmetry, that successfully describes (i) fermion masses and mixings, (ii) neutrino oscillations, as well as (iii) CP violation. LFV emerges as an important prediction of this framework, bringing no new parameters, barring the few SUSY parameters, which are assumed to be flavor-universal at M^*>= M_{GUT}. We study LFV (i.e. μ-> eγ, τ-> μγ, τ-> eγand μN -> e N) within this framework by including contributions both from the presence of the right handed neutrinos as well as those arising from renormalization group running in the post-GUT regime (M^* to M_{GUT}). Typically the latter, though commonly omitted in the literature, is found to dominate. Our predicted rates for μ-> eγshow that while some choices of (m_o, m_{1/2}) are clearly excluded by the current empirical limit, this decay should be seen with an improvement of the current sensitivity by a factor of 10--100, even if sleptons are moderately heavy (<= 800 GeV, say). For the same reason, μ-e conversion (μN -> e N) should show in the planned MECO experiment. Implications of WMAP and (g-2)_μ-measurements are noted, as also the significance of the measurement of parity-odd asymmetry in the decay of polarized μ^+ into e^+ γ.
description: 17 pages, 1 figure
Virus spread versus contact tracing: two competing contagion processes
Creators: name: Reyna-Lara, Adriana
name: Soriano-Paños, David
name: Gómez, Sergio
name: Granell, Clara
name: Matamalas, Joan T.
name: Steinegger, Benjamin
name: Arenas, Alex
name: Gómez-Gardeñes, Jesús
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: After the blockade that many nations suffered to stop the growth of the incidence curve of COVID-19 during the first half of 2020, they face the challenge of resuming their social and economic activity. The rapid airborne transmissibility of SARS-CoV-2, and the absence of a vaccine, calls for active containment measures to avoid the propagation of transmission chains. The best strategy up to date, popularly known as Test-Track-Treat (TTT), consist in testing the population for diagnosis, track the contacts of those infected, and treat by quarantine all these cases. The dynamical process that better describes the combined action of the former mechanisms is that of a contagion process that competes with the spread of the pathogen, cutting off potential contagion pathways. Here we propose a compartmental model that couples the dynamics of the infection with the contact tracing and isolation of cases. We develop an analytical expression for the effective case reproduction number $R_c(t)$ that reveals the role of contact tracing in the mitigation and suppression of the epidemics. We show that there is a trade off between the infection propagation and the isolation of cases. If the isolation is limited to symptomatic individuals only, the incidence curve can be flattened but not bended. However, if contact tracing is applied to asymptomatic individuals too, the strategy can bend the curve and suppress the epidemics. Quantitative results are dependent on the network topology. We quantify, the most important indicator of the effectiveness of contact tracing, namely its capacity to reverse the increasing tendency of the epidemic curve, causing its bending.
description: 12 pages, 6 figures, 2 tables. To appear in Physical Review Research
Pseudogap and high-temperature superconductivity from weak to strong coupling. Towards quantitative theory
Creators: name: Tremblay, A. -M. S.
name: Kyung, B.
name: Sénéchal, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: This is a short review of the theoretical work on the two-dimensional Hubbard model performed in Sherbrooke in the last few years. It is written on the occasion of the twentieth anniversary of the discovery of high-temperature superconductivity. We discuss several approaches, how they were benchmarked and how they agree sufficiently with each other that we can trust that the results are accurate solutions of the Hubbard model. Then comparisons are made with experiment. We show that the Hubbard model does exhibit d-wave superconductivity and antiferromagnetism essentially where they are observed for both hole and electron-doped cuprates. We also show that the pseudogap phenomenon comes out of these calculations. In the case of electron-doped high temperature superconductors, comparisons with angle-resolved photoemission experiments are nearly quantitative. The value of the pseudogap temperature observed for these compounds in recent photoemission experiments has been predicted by theory before it was observed experimentally. Additional experimental confirmation would be useful. The theoretical methods that are surveyed include mostly the Two-Particle Self-Consistent Approach, Variational Cluster Perturbation Theory (or variational cluster approximation), and Cellular Dynamical Mean-Field Theory.
description: 32 pages, 51 figures. Slight modifications to text, figures and references. A PDF file with higher-resolution figures is available at http://www.physique.usherbrooke.ca/senechal/LTP-toc.pdf
Deep Convolutional Neural Network Ensembles using ECOC
Creators: name: Ahmed, Sara Atito Ali
name: Zor, Cemre
name: Yanikoglu, Berrin
name: Awais, Muhammad
name: Kittler, Josef
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: I.5.2; I.2.0
subject: 68T07,

description: Deep neural networks have enhanced the performance of decision making systems in many applications including image understanding, and further gains can be achieved by constructing ensembles. However, designing an ensemble of deep networks is often not very beneficial since the time needed to train the networks is very high or the performance gain obtained is not very significant. In this paper, we analyse error correcting output coding (ECOC) framework to be used as an ensemble technique for deep networks and propose different design strategies to address the accuracy-complexity trade-off. We carry out an extensive comparative study between the introduced ECOC designs and the state-of-the-art ensemble techniques such as ensemble averaging and gradient boosting decision trees. Furthermore, we propose a combinatory technique which is shown to achieve the highest classification performance amongst all.
description: 13 pages double column IEEE transactions style
A novel smoothed particle hydrodynamics formulation for thermo-capillary phase change problems with focus on metal additive manufacturing melt pool modeling
Creators: name: Meier, Christoph
name: Fuchs, Sebastian L.
name: Hart, A. John
name: Wall, Wolfgang A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Laser-based metal processing including welding and three dimensional printing, involves localized melting of solid or granular raw material, surface tension-driven melt flow and significant evaporation of melt due to the applied very high energy densities. The present work proposes a weakly compressible smoothed particle hydrodynamics formulation for thermo-capillary phase change problems involving solid, liquid and gaseous phases with special focus on selective laser melting, an emerging metal additive manufacturing technique. Evaporation-induced recoil pressure, temperature-dependent surface tension and wetting forces are considered as mechanical interface fluxes, while a Gaussian laser beam heat source and evaporation-induced heat losses are considered as thermal interface fluxes. A novel interface stabilization scheme is proposed, which is shown to allow for a stable and smooth liquid-gas interface by effectively damping spurious interface flows as typically occurring in continuum surface force approaches. Moreover, discretization strategies for the tangential projection of the temperature gradient, as required for the discrete Marangoni forces, are critically reviewed. The proposed formulation is deemed especially suitable for modeling of the melt pool dynamics in metal additive manufacturing because the full range of relevant interface forces is considered and the explicit resolution of the atmospheric gas phase enables a consistent description of pore formation by gas inclusion. The accuracy and robustness of the individual model and method building blocks is verified by means of several selected examples in the context of the selective laser melting process.
A Survey on Personality-Aware Recommendation Systems
Creators: name: Dhelim, Sahraoui
name: Aung, Nyothiri
name: Bouras, Mohammed Amine
name: Ning, Huansheng
name: Cambria, Erik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: With the emergence of personality computing as a new research field related to artificial intelligence and personality psychology, we have witnessed an unprecedented proliferation of personality-aware recommendation systems. Unlike conventional recommendation systems, these new systems solve traditional problems such as the cold start and data sparsity problems. This survey aims to study and systematically classify personality-aware recommendation systems. To the best of our knowledge, this survey is the first that focuses on personality-aware recommendation systems. We explore the different design choices of personality-aware recommendation systems, by comparing their personality modeling methods, as well as their recommendation techniques. Furthermore, we present the commonly used datasets and point out some of the challenges of personality-aware recommendation systems.
description: The final version is published in Artificial Intelligence Review (2021) https://link.springer.com/article/10.1007/s10462-021-10063-7
Search for Lepton Flavor Violation in the Decay tau -> mu gamma
Creators: name: Aubert, B.
name: Collaboration, The BABAR
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the nonconservation of lepton flavor number in the decay tau -> mu gamma has been performed using 2.07 x 10^8 e+e- -> tau+ tau- events produced at a center-of-mass energy near 10.58 GeV with the BABAR detector at the PEP-II storage ring. We find no evidence for a signal and set an upper limit on the branching ratio of BR(tau -> mu gamma) < 6.8 x 10^-8 at 90% confidence level.
description: 7 pages, 2 encapsulated postscript figures, submitted to PRL
High-low pressure domain wall for the classical Toda lattice
Creators: name: Mendl, Christian B.
name: Spohn, Herbert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We study the classical Toda lattice with domain wall initial conditions, for which left and right half lattice are in thermal equilibrium but with distinct parameters of pressure, mean velocity, and temperature. In the hydrodynamic regime the respective space-time profiles scale ballisticly. The particular case of interest is a jump from low to high pressure at uniform temperature and zero mean velocity. Thereby the scaling function for the average stretch (also free volume) is forced to change sign. By direct inspection, the hydrodynamic equations for the Toda lattice seem to be singular at zero stretch. In our contribution we report on numerical solutions and convincingly establish that nevertheless the self-similar solution exhibits smooth behavior.
description: 15 pages, 2 figures
The diffuse neutrino flux from supernovae: upper limit on the electron neutrino component from the non-observation of antineutrinos at SuperKamiokande
Creators: name: Lunardini, Cecilia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: I derive an upper bound on the electron neutrino component of the diffuse supernova neutrino flux from the constraint on the antineutrino component at SuperKamiokande. The connection between antineutrino and neutrino channels is due to the similarity of the muon and tau neutrino and antineutrino fluxes produced in a supernova, and to the conversion of these species into electron neutrinos and antineutrinos inside the star. The limit on the electron neutrino flux is 5.5 cm^-2 s^-1 above 19.3 MeV of neutrino energy, and is stronger than the direct limit from Mont Blanc by three orders of magnitude. It represents the minimal sensitivity required at future direct searches, and is intriguingly close to the reach of the Sudbury Neutrino Observatory (SNO) and of the ICARUS experiment. The electron neutrino flux will have a lower bound if the electron antineutrino flux is measured. Indicatively, the first can be smaller than the second at most by a factor of 2-3 depending on the details of the neutrino spectra at production.
description: LaTeX, 5 pages, 1 figure. Paper is modified in the presentation (Fig. 1 was replaced with a different plot and Table 1 was expanded), with unchanged results. References added and corrected
Continuous variable private quantum channel
Creators: name: Bradler, Kamil
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we introduce the concept of quantum private channel within the continuous variables framework (CVPQC) and investigate its properties. In terms of CVPQC we naturally define a "maximally" mixed state in phase space together with its explicit construction and show that for increasing number of encryption operations (which sets the length of a shared key between Alice and Bob) the encrypted state is arbitrarily close to the maximally mixed state in the sense of the Hilbert-Schmidt distance. We bring the exact solution for the distance dependence and give also a rough estimate of the necessary number of bits of the shared secret key (i.e. how much classical resources are needed for an approximate encryption of a generally unknown continuous-variable state). The definition of the CVPQC is analyzed from the Holevo bound point of view which determines an upper bound of information about an incoming state an eavesdropper is able to get from his optimal measurement.
description: upper bound on information Eve can get was revised and substantially lowered (chapter IV), part of chapter III rewritten, several typos corrected
Between rationalism and romanticism: F.H. Jacobi's novel ALLWILL and the Aufklärung's self-conception
Creators: name: Eschelmüller, Richard Ludwig
Publisher: name: University of British Columbia
Year: 2009

description: This paper addresses a problem in the history of philosophy concerning the issue of moral autonomy within the context of the German Enlightenment. More specifically, it explores the way in which Friedrich Heinrich Jacobi addressed this problem in his 1793 philosophical novel Allwill. The first chapter analyzes the three phases of an ongoing philosophical debate between pietists and rationalists over the definition of Enlightenment By contrasting the rationalism of the first phase with the romantic reaction that characterized the second phase, the first chapter outlines the general historical and philosophical background of the third phase during which thinkers of the Aufklarung explicitly addressed the question of true and false Enlightenment. The second chapter begins with an analysis of Jacobi's role in the "Pantheism dispute" with Moses Mendelssohn regarding the issue of Gotthold Ephraim Lessing's alleged Spinozism, and then traces the development of Jacobi's Counter-Enlightenment stance through a brief biographical sketch of his political and philosophical career. The third chapter looks at Jacobi's exploration of the darker side of the Sturm und Drang's cult of nature and feeling in his novel Allwill. The analysis here focuses on Jacobi's dual critique of disengaged rationalism and subjective emotivism, neither of which, in his view, could be the basis for moral autonomy. The final chapter concludes with a discussion of how Jacobi's Counter-Enlightenment stance may be interpreted within the larger context of enlightenment naturalism.
Overlap hypercube fermions in QCD with light quarks
Creators: name: Bietenholz, W.
name: Shcheredin, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report on simulation results with overlap hypercube fermions (overlap HF) - a type of exactly chiral lattice fermions - and their link to chiral perturbation theory. We first sketch the construction of the overlap HF and discuss its high level of locality. Next we show applications in the p-regime of QCD, where we evaluate m_π, m_ρ, the quark mass according to the PCAC relation, the renormalisation constant Z_A and the pion decay constant F_π as functions of the bare quark mass. F_π is then reconsidered at even smaller quark masses in the epsilon-regime, along with the scalar condensate Σ. In that context we also discuss results for the topological charges and susceptibility.
description: 6 pages, 6 figures, talk presented at Lattice 2005 (chiral fermions)
Factors Affecting Outsourcing for Information Technology Services in Rural Hospitals: Theory and Evidence
Creators: name: Whitacre, Brian E.
name: Fannin, James Matthew
name: Barnes, James N.
name: Whitacre, Brian E.
name: Fannin, James Matthew
name: Barnes, James N.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Health Economics and Policy
subject: Labor and Human Capital
subject: Research and Development/Tech Change/Emerging Technologies
subject: Health Information Technology
subject: Outsourcing
subject: Hospital

description: As health information technology becomes more prevalent for most healthcare facilities, hospitals across the nation are choosing between performing this service in-house and outsourcing to a technology firm in the health industry. This paper examines factors affecting the information technology (IT) outsource decision for various hospitals. Using 2004 data from the American Hospital Association, logistic regression models find that governmental ownership and a proxy variable for hospitals that treat more severe injuries positively impact the probability of outsourcing for IT services.
Magnetic Properties of Ternary Gallides of type RNi4Ga (R = Rare earths)
Creators: name: Joshi, Devang A.
name: Rana, C. V. Tomy D. S.
name: Nagarajan, R.
name: Malik, S. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetic properties of RNi4Ga (R = La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm and Lu) compounds have been investigated. These compounds form in a hexagonal CaCu5 type structure with a space group P6/mmm. Compounds with the magnetic rare earths, R = Nd, Sm, Gd, Tb, Dy, Ho, Er and Tm, undergo a ferromagnetic transition at 5 K, 17 K, 20 K, 19 K, 12 K, 3.5 K, 8 K and 6.5 K, respectively. The transition temperatures are smaller compared to their respective parent compounds RNi5. PrNi4Ga is paramagnetic down to 2 K. LaNi4Ga and LuNi4Ga are Pauli paramagnets. All the compounds show thermomagnetic irreversibility in the magnetically ordered state except GdNi4Ga.
description: 14 Pages 6 Figures 1 Table
Effective Temperature Dynamics in an Athermal Amorphous Plasticity Theory
Creators: name: Bouchbinder, Eran
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent developments in the theory of amorphous plasticity point to the central role played by the concept of an effective disorder temperature $T_{eff}$. An athermal dynamics for $T_{eff}$ are proposed in the framework of a deformation theory and discussed in light of the recent steady state simulations by Haxton and Liu [Phys. Rev. Lett. {\bf 99}, 195701 (2007)]. The structure of the resulting theory, its parameters and transient dynamics are discussed and compared to available data.
description: 10 pages, 4 figures; new experimental ref., additional discussions
Braneworlds, Conformal Fields and Dark Energy
Creators: name: Neves, Rui
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the Randall-Sundrum scenario we analize the dynamics of a spherically symmetric 3-brane when matter fields propagate in the bulk. For a well defined class of conformal fields of weight -4 we determine a new set of exact 5-dimensional solutions which localize gravity in the vicinity of the brane and are stable under radion field perturbations. Geometries which describe the dynamics of inhomogeneous dust, generalized dark radiation and homogeneous polytropic dark energy are shown to belong to this set.
description: 7 pages, latex, no figures. Talk given at the Fifth International Workshop on New Worlds in Astroparticle Physics, University of Algarve, Faro, 8-10 January 2005. To be published in the workshop proceedings
Two-phase interfacial structure of bubbly-to-slug transition flows in a 12.7 mm ID vertical tube
Creators: name: Dang, Zhuoran
name: Wang, Guanyi
name: Ishii, Mamoru
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This experimental study focuses on the characteristics of air-water two-phase interfacial structure. Interfacial parameters including void fraction, interfacial area concentration, and bubble interfacial velocity are measured using four-sensor electrical conductivity probe on a 12.7 mm ID vertical tube. The tube size is approximately equal to the maximum distorted bubble size. Therefore, the bubbly-to-slug transition characteristics can be different from in other sizes of tubes. Comparing with previous studies, this study provides an experimental database with a wide range on the bubbly-to-slug transition flows, with 4 different superficial liquid velocities (0.3, 0.5, 1.0, and 2.0 m/s) and void fraction ranging from 0.07 to 0.66. Experimental results show that the wall-peak void distribution does not appear in a small diameter tube under the bubbly-to-slug flow transition flow. The distribution is related with both void fraction and the relative bubble size to the tube size. In this sense, a new correlation of distribution parameter in the Drift Flux model is proposed based on the previous studies by Ishii and Hibiki et al. This experimental study can be a good reference for the model development of flow regime transition and the Interfacial Area Transport Equation.
description: 22 pages, 15 figures. Preprint submitted to International Journal of Heat and Mass Transfer
STRUCTURAL EQUATION MODELS FOR THE HIERARCHIZATION OF ACTIVITIES IN THE SUPPLY AND DISTRIBUTION OF ORIGIN-CERTIFIED FOODS
Creators: name: Sanchez Garcia, Mercedes
name: Barrena Figueroa, Ramo
name: Sanchez Garcia, Mercedes
name: Barrena Figueroa, Ramo
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Consumer behaviour
subject: Regional Certification Labels
subject: Structural Equation Modelling

description: A quality differentiation strategy for agrifood products based on geographical origin and production method has become a viable alternative for certain firms in the internationalized food markets, if it could be considered as a rural development instrument. This method of adding value to their products nevertheless requires them to take into account not only objective factors, which tend to be related to product characteristics, but also subjective factors that are more closely linked to consumers’ assessment of their differentiating features and the factors that influence that assessment. The study confirms using various structural equation models the key impact of consumers’ attitudes towards these products (image) on final purchase behaviour. The experiment was conducted both inside and outside the production region of two selected food items and in all markets it will be necessary to act upon both attitudinal components, that is, product image in its various dimensions and consumer attitude toward the region of origin, in order to develop these markets, where, currently, product characteristics are found to have the stronger influence.
Vortices in a rotating BEC under extreme elongation
Creators: name: Sanchez-Lotero, P.
name: Palacios, J. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate a non-axisymmetric rotating BEC in a limit of rotation frequency for which the BEC transforms into a quasi-one-dimensional system. We compute the vortex lattice wavefunction by minimizing the Gross-Pitaevskii energy functional in the lowest Landau level approximation for different confinement potentials. The condensate typically presents a changing number of vortex rows as a function of the interaction strength or rotation-confinement ratio. More specifically, the vortex lattices can be classified into two classes according to their symmetry with respect to the longitudinal axis. These two classes correspond to different local minima of the energy functional and evolve independently as a function of the various parameters.
description: 8 pages, 12 figures
Konvergenz- und Konsenstexte als Ergebnis bilateraler Dialoge über das hl. Abendmahl
Creators: name: Kretschmar, Georg
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 29 Nr. 1 (1980): Ökumenische Rundschau, Band 29, Heft 1
Eigenvalue density of empirical covariance matrix for correlated samples
Creators: name: Burda, Z.
name: Jurkiewicz, J.
name: Waclaw, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We describe a method to determine the eigenvalue density of empirical covariance matrix in the presence of correlations between samples. This is a straightforward generalization of the method developed earlier by the authors for uncorrelated samples. The method allows for exact determination of the experimental spectrum for a given covariance matrix and given correlations between samples in the limit of large N and N/T=r=const with N being the number of degrees of freedom and T being the number of samples. We discuss the effect of correlations on several examples.
description: 12 pages, 5 figures, to appear in Acta Phys. Pol. B (Proceedings of the conference on `Applications of Random Matrix Theory to Economy and Other Complex Systems', May 25-28, 2005, Cracow, Poland
Optimal export taxes – the case of cocoa in Cote d'Ivoire
Creators: name: Burger, Kees
name: Burger, Kees
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: International Relations/Trade
subject: Public Economics
subject: optimal export tax
subject: primary commodities
subject: cocoa
subject: Côte d'Ivoire
subject: vintage model

description: Export taxes can provide additional welfare to large exporters, an argument for interventions in many primary commodity exporting countries. We investigate the benefits of export taxation for Côte d'Ivoire, the dominant exporter of cocoa. Where many applications treat the formula for optimal export taxes incorrectly as a prescription, we take the endogeneity of the exporter’s share into account. We also distinguish between short-term and long-term effects, relevant for a tree crop like cocoa and we allow for a normal commercial margin between export and farm gate prices. Results are calculated via simulations in a model, in which the age-compositions of the tree stocks of major producing countries are distinguished. Simulations over a period of 15 years show that higher levels of export taxation do not change overall revenues of Côte d'Ivoire on a longer term, but lead to strong redistribution from farmers to the central authorities.
tqix: A toolbox for Quantum in X: Quantum measurement, quantum tomography, quantum metrology, and others
Creators: name: Ho, Le Bin
name: Tuan, Kieu Quang
name: Nguyen, Hung Q.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present an open-source computer program written in Python language for quantum measurement and related issues. In our program, quantum states and operators, including quantum gates, can be developed into a quantum-object function represented by a matrix. Build into the program are several measurement schemes, including von Neumann measurement and weak measurement. Various numerical simulation methods are used to mimic the real experiment results. We first provide an overview of the program structure and then discuss the numerical simulation of quantum measurement. We illustrate the program's performance via quantum state tomography and quantum metrology. The program is built in a general language of quantum physics and thus is widely adaptable to various physical platforms, such as quantum optics, ion traps, superconducting circuit devices, and others. It is also ideal to use in classroom guidance with simulation and visualization of various quantum systems.
description: 14 pages, 9 figues
THEORETICAL AND POLICY BACKGROUND TO THE TOP-MARD PROJECT (TOWARDS A POLICY MODEL OF MULTIFUNCTIONAL AGRICULTURE AND RURAL DEVELOPMENT)
Creators: name: Bryden, John Marshall
name: Arandia Miura, Amaia
name: Johnson, Thomas G.
name: Bryden, John Marshall
name: Arandia Miura, Amaia
name: Johnson, Thomas G.
Publisher: name: Unknown
Year: 2008
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development
Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: The TOP-MARD project is a 3-year, 11 country, project supported by the EU’s Framework 6 Programme for Research and Technology Development1. The aim of the research project was to build a policy model of multifunctional agriculture and rural development which would link the multiple functions of agriculture with the development and quality of life of rural regions, and explore the influence of different policies on rural development outcomes. In order to deal with both market and non-market outputs, and to explore dynamics over time, a systems modelling approach was adopted.
Spin dynamics of two-dimensional electrons with Rashba spin-orbit coupling and electron-electron interactions
Creators: name: Li, Yuan
name: Li, You-Quan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the spin dynamics of two dimensional electron gases (2DEGs) with Rashba spin-orbit coupling by taking account of electron-electron interactions. The diffusion equations for charge and spin densities are derived by making use of the path-integral approach and the quasiclassical Green's function. Analyzing the effect of the interactions, we show that the spin-relaxation time can be enhanced by the electron-electron interaction in the ballistic regime.
description: accepted for publication in Phys. Rev. B
Astrophysical constraints from gamma-ray spectroscopy
Creators: name: Diehl, Roland
name: Prantzos, Nikos
name: von Ballmoos, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gamma-ray lines from cosmic sources provide unique isotopic information, since they originate from energy level transitions in the atomic nucleus. Gamma-ray telescopes explored this astronomical window in the past three decades, detecting radioactive isotopes that have been ejected in interstellar space by cosmic nucleosynthesis events and nuclei that have been excited through collisions with energetic particles. Short-lived radioactivities have been detected in a couple of supernovae (56Co and 57Co in SN1987A, 44Ti in Cas A), the diffuse glow of long-lived 26Al has been mapped along the entire plane of the Galaxy, several excited nuclei have been detected in solar flares, and, last but not least, positron annihilation has been observed in the inner Galaxy since the 70ies. Recent imaging and line shape measurements of e-/e+ annihilation emission from the Galactic bulge can hardly be accounted for by conventional sources of positrons; recent 26Al emission and line width measurement from the inner Galaxy and from the Cygnus region can constrain the properties of the interstellar medium; a diffuse 60Fe gamma-ray line emission appears rather weak, in view of current theoretical predictions. Recent Galactic core-collapse supernovae are studied through 44Ti radioactivity, but, apart from Cas A, no other source has been found. The characteristic signature of 22Na-line emission from a nearby O-Ne-Mg novae is expected to be measured during INTEGRAL's lifetime.
description: 30 pages, 11 figures; accepted for publication in Nucl.Phys.A, special volume on Nuclear Astrophysics, Eds. K.-H. Langanke, F.-K. Thielemann, M. Wiescher