cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social support and coping with interpersonal sport stress during early adolescence
Creators: name: Hoar, Sharleen Denise
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation investigated early adolescent athletes' social resources and coping responses during sport-specific stressful events. Guided by Lazarus' (1991a, 1999) Cognitive-Motivational-Relational theoretical model of stress and emotion, a multi-step approach was utilized to examine theoretical and descriptive questions about early adolescents coping and social support. Specifically, 575 adolescent team sport athletes (n = 290 male, n = 285 female) between the ages of 11 and 15 years identified the individuals who provide supportive resources to the athlete (i.e., social support network), the types of social supportive resources obtained in sport (i.e., received social support), perceptions of social support (i.e., perceived social support), as well as the coping strategies and coping function(s) used to manage interpersonal difficulties in sport. The findings extend empirical research within the youth sport literature. An important finding concerns the relatively few coping strategies that athletes reported (M 2.42, SD = 1.40) when asked to recall the management of a stressful interpersonal event with a semi open-ended questionnaire. Confirmatory factor analyses revealed an acceptable fit for the multidimensional structure of social support for both males (TLI = .947, CFI = .961) and females (TLI = .949, CFI = .962). Descriptively, findings demonstrated that early adolescent athletes social support network size, received social support, and perceived social support was similar to that reported in the social support literature. MANOVA analyses revealed a main effect in favour of girls, for all three social support dimensions. Structurally, support for a direct effect model between social support dimensions and coping was demonstrated. No support was found for the mediation of perceived social support between the relations of the other social support dimensions and coping. The structural relation, however, was moderated by gender. Received social support was related to boys coping, while perceived social support and social support network size significantly related to girls coping. The findings are discussed with respect to the implications for the conceptual understanding and measurement of early adolescent coping and social support in sport.
Relativistic acceleration of electrons injected by a plasma mirror into a radially polarized laser beam
Creators: name: Zaïm, N.
name: Thévenet, M.
name: Lifschitz, A.
name: Faure, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We propose a method to generate femtosecond, relativistic and high-charge electron bunches using few-cycle and tightly focused radially polarized laser pulses. In this scheme, the incident laser pulse reflects off an overdense plasma that injects electrons into the reflected pulse. Particle-In-Cell simulations show that the plasma injects electrons ideally, resulting in a dramatic increase of charge and energy of the accelerated electron bunch in comparison to previous methods. This method can be used to generate femtosecond pC bunches with energies in the 1-10 MeV range using realistic laser parameters corresponding to current kHz laser systems.
Gauss--Berezin integral operators and spinors over supergroups $\mathrm{OSp}(2p|2q)$, and Lagrangian super-Grasmannians
Creators: name: Neretin, Yuri
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B10, 58A50, 30H20, 22E46

description: We obtain explicit formulas for the spinor representation $ρ$ of the real orthosymplectic supergroup $\mathrm{OSp}(2p|2q,\mathbb{R})$ by integral 'Gauss--Berezin' operators. Next, we extend $ρ$ to a complex domain and get a representation of a larger semigroup, which is a counterpart of Olshanski subsemigroups in semisimple Lie groups. Further, we show that $ρ$ can be extended to an operator-valued function on a certain domain in the Lagrangian super-Grassmannian (graphs of elements of the supergroup $\mathrm{OSp}(2p|2q,\mathbb{C})$ are Lagrangian super-subspaces) and show that this function is a 'representation' in the following sense: we consider Lagrangian subspaces as linear relations and composition of two Lagrangian relations in general position corresponds to a product of Gauss--Berezin operators
description: 60pp, extended version, typos are corrected
Quantum dynamics in strong fluctuating fields
Creators: name: Goychuk, Igor
name: Hanggi, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A large number of multifaceted quantum transport processes in molecular systems and physical nanosystems can be treated in terms of quantum relaxation processes which couple to one or several fluctuating environments. A thermal equilibrium environment can conveniently be modelled by a thermal bath of harmonic oscillators. An archetype situation provides a two-state dissipative quantum dynamics, commonly known under the label of a spin-boson dynamics. An interesting and nontrivial physical situation emerges, however, when the quantum dynamics evolves far away from thermal equilibrium. This occurs, for example, when a charge transferring medium possesses nonequilibrium degrees of freedom, or when a strong time-dependent control field is applied externally. Accordingly, certain parameters of underlying quantum subsystem acquire stochastic character. Herein, we review the general theoretical framework which is based on the method of projector operators, yielding the quantum master equations for systems that are exposed to strong external fields. This allows one to investigate on a common basis the influence of nonequilibrium fluctuations and periodic electrical fields on quantum transport processes. Most importantly, such strong fluctuating fields induce a whole variety of nonlinear and nonequilibrium phenomena. A characteristic feature of such dynamics is the absence of thermal (quantum) detailed balance.
description: review article, Advances in Physics (2005), in press
Cylindromyia intermedia
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Cylindromyia
Cylindromyia intermedia

description: Cylindromyia intermedia (MEIGEN, 1824)
Bgld, Zurndorf, NSG, 14.6.17, 3 Ex und 27.6.17;
NÖ, Hainburg, Spitzerberg, 11.9.16, 2 Ex und 24.9.16.
Neu für Burgenland und Niederösterreich.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 794, DOI: 10.5281/zenodo.4004374
Making Walks Count: From Silent Circles to Hamiltonian Cycles
Creators: name: Alekseyev, Max A.
name: Michon, Gerard P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We illustrate the application of the matrix-transfer method for a number of enumeration problems concerning the party game Silent Circles, Hamiltonian cycles in the antiprism graphs, and simple paths and cycles of a fixed length in arbitrary graphs.
Search for the Invisible Decay of Neutrons with KamLAND
Creators: name: The KamLAND Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Kamioka Liquid scintillator Anti-Neutrino Detector (KamLAND) is used in a search for single neutron or two neutron intra-nuclear disappearance that would produce holes in the $\it{s}$-shell energy level of $^{12}$C nuclei. Such holes could be created as a result of nucleon decay into invisible modes ($inv$), e.g. $n \to 3ν$ or $nn \to 2ν$. The de-excitation of the corresponding daughter nucleus results in a sequence of space and time correlated events observable in the liquid scintillator detector. We report on new limits for one- and two-neutron disappearance: $τ(n\to inv)> 5.8\times 10^{29}$ years and $τ(nn \to inv)> 1.4 \times 10^{30}$ years at 90% CL. These results represent an improvement of factors of $\sim$3 and $>10^4$ over previous experiments.
description: 5 pages, 3 figures
Neutralino Relic Density in a Supersymmetric U(1)' Model
Creators: name: Barger, Vernon
name: Kao, Chung
name: Langacker, Paul
name: Lee, Hye-Sung
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study properties of the lightest neutralino (χ) and calculate its cosmological relic density in a supersymmetric U(1)' model with a secluded U(1)' breaking sector (the S-model). The lightest neutralino mass is smaller than in the minimal supersymmetric standard model; for instance, m_χ< 100 GeV in the limit that the U(1)' gaugino mass is large compared to the electroweak scale. We find that the Z-χ-χcoupling can be enhanced due to the singlino components in the extended neutralino sector. Neutralino annihilation through the Z-resonance then reproduces the measured cold dark matter density over broad regions of the model parameter space.
description: Version to be published in Physics Letters B. 13 pages, Revtex4, epsf.sty, 13 postscript figures
Runaway potentials in warm inflation satisfying the swampland conjectures
Creators: name: Das, Suratna
name: Ramos, Rudnei O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The runaway potentials, which do not possess any critical points, are viable potentials which befit the recently proposed de Sitter swampland conjecture very well. In this work, we embed such potentials in the warm inflation scenario motivated by quantum field theory models generating a dissipation coefficient with a dependence cubic in the temperature. It is demonstrated that such models are able to remain in tune with the present observations and they can also satisfy all the three Swampland conjectures, namely the Swampland Distance conjecture, the de Sitter conjecture and the Transplackian Censorship Conjecture, simultaneously. These features make such models viable from the point of view of effective field theory models in quantum gravity and string theory, away from the Swampland.
description: 14 pages, double column, 2 figures, v2: Discussion and References added, matched with the published version in Physical Review D
The statistical mechanics of traveling salesman type problems
Creators: name: Dean, David S.
name: Lancaster, David
name: Majumdar, Satya N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the finite temperature statistical mechanics of Hamiltonian paths between a set of N quenched randomly distributed points in a finite domain D. The energy of the path is a function of the distance between neighboring points on the path, an example is the traveling salesman problem where the energy is the total distance between neighboring points on the path. We show how the system can be analyzed in the limit of large N without using the replica method.
description: 4 pages RevTex 1 .eps figure
Thermal Ionization for Short-Range Potentials
Creators: name: Hasler, David
name: Siebert, Oliver
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study a concrete model of a confined particle in form of a Schrödinger operator with a compactly supported smooth potential coupled to a bosonic field at positive temperature. We show, that the model exhibits thermal ionization for any positive temperature, provided the coupling is sufficiently small. Mathematically, one has to rule out that zero is an eigenvalue of the self-adjoint generator of time evolution - the Liouvillian. This will be done by using positive commutator methods with dilations in the space of scattering functions. Our proof relies on a spatial cutoff in the coupling but does otherwise not require any unnatural restrictions.
description: 66 pages; proof of the virial theorem revised, further corrections and more details in several proofs
Did Mexican Meat Demand Change under NAFTA?
Creators: name: Malaga, Jaime E.
name: Pan, Suwen
name: Duch-Carvallo, Teresa
name: Malaga, Jaime E.
name: Pan, Suwen
name: Duch-Carvallo, Teresa
Publisher: name: Unknown
Year: 2009
Subjects: subject: Consumer/Household Economics
subject: QUAIDS model
subject: Mexico meat demand
subject: NAFTA

description: A censored non linear QUAIDS model was applied to estimate Mexican meat demand parameters using annual household survey data for six years from 1992 to 2004. Results suggest that in Mexico and throughout the analyzed period, beef and pork meat were luxury items while chicken was a normal good. Small but insignificant changes in meat demand parameters were found after NAFTA implementation suggesting that changes on consumer behavior due to macroeconomic variables might take longer periods to be quantifiable.
On partitions into squares of distinct integers whose reciprocals sum to 1
Creators: name: Alekseyev, Max A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In 1963, Graham proved that all integers greater than 77 (but not 77 itself) can be partitioned into distinct positive integers whose reciprocals sum to 1. He further conjectured that for any sufficiently large integer, it can be partitioned into squares of distinct positive integers whose reciprocals sum to 1. In this study, we establish the exact bound for existence of such partitions by proving that 8542 is the largest integer with no such partition.
Generalization of SUSY Intertwining Relations: New Exact Solutions of Fokker-Planck Equation
Creators: name: Ioffe, M. V.
name: Nishnianidze, D. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is commonly known that the Fokker-Planck equation is exactly solvable only for some particular systems, usually with time-independent drift coefficients. To extend the class of solvable problems, we use the intertwining relations of SUSY Quantum Mechanics but in new - asymmetric - form. It turns out that this form is just useful for solution of Fokker-Planck equation. As usual, intertwining provides a partnership between two different systems both described by Fokker-Planck equation. Due to the use of an asymmetric kind of intertwining relations with a suitable ansatz, we managed to obtain a new class of analytically solvable models. What is important, this approach allows us to deal with the drift coefficients depending on both variables, $x,$ and $t.$ An illustrating example of the proposed construction is given explicitly.
description: 6 p.p
Interface-Confined Doubly Anisotropic Oxidation of Two-Dimensional MoS2
Creators: name: Ryu, Yejin
name: Kim, Wontaek
name: Koo, Seonghyun
name: Kang, Haneul
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Ryu, Sunmin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Despite their importance, chemical reactions confined in a low dimensional space are elusive and experimentally intractable. In this work, we report doubly anisotropic, in-plane and out-of-plane, oxidation reactions of two-dimensional crystals, by resolving interface-confined thermal oxidation of a single and multilayer MoS2 supported on silica substrates from their conventional surface reaction. Using optical second-harmonic generation spectroscopy of artificially stacked multilayers, we directly proved that crystallographically oriented triangular oxides (TOs) were formed in the bottommost layer while triangular etch pits (TEs) were generated in the topmost layer and that both structures were terminated with zigzag edges. The formation of the Mo oxide layer at the interface demonstrates that O2 diffuses efficiently through the van der Waals (vdW) gap but not MoO3, which would otherwise sublime. The fact that TOs are several times larger than TEs indicates that oxidation is greatly enhanced when MoS2 is in direct contact with silica substrates, which suggests a catalytic effect. This study indicates that the vdW-bonded interfaces are essentially open to mass transport and can serve as a model system for investigating chemistry in low dimensional spaces.
Polarization-sensitive scattering in Zemax OpticStudio
Creators: name: Carles, Guillem
name: Group, Imaging Concepts
Publisher: name: figshare
Year: 2020
Subjects: subject: Applied Physics
subject: 29901 Biological Physics
subject: FOS: Biological sciences
subject: 20501 Classical and Physical Optics
subject: FOS: Physical sciences
subject: Computational Physics

description: Online resource article describing how to perform Monte-Carlo simulations of optical systems including polarisation-sensitive Mie Scattering using Zemax OpticStudio.
Finding community structure in very large networks
Creators: name: Clauset, Aaron
name: Newman, M. E. J.
name: Moore, Cristopher
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The discovery and analysis of community structure in networks is a topic of considerable recent interest within the physics community, but most methods proposed so far are unsuitable for very large networks because of their computational cost. Here we present a hierarchical agglomeration algorithm for detecting community structure which is faster than many competing algorithms: its running time on a network with n vertices and m edges is O(m d log n) where d is the depth of the dendrogram describing the community structure. Many real-world networks are sparse and hierarchical, with m ~ n and d ~ log n, in which case our algorithm runs in essentially linear time, O(n log^2 n). As an example of the application of this algorithm we use it to analyze a network of items for sale on the web-site of a large online retailer, items in the network being linked if they are frequently purchased by the same buyer. The network has more than 400,000 vertices and 2 million edges. We show that our algorithm can extract meaningful communities from this network, revealing large-scale patterns present in the purchasing habits of customers.
Scalable spin-photon entanglement by time-to-polarization conversion
Creators: name: Vasconcelos, Rui
name: Reisenbauer, Sarah
name: Salter, Cameron
name: Wachter, Georg
name: Wirtitsch, Daniel
name: Schmiedmayer, Jörg
name: Walther, Philip
name: Trupke, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spin-photon interfaces are strong candidates for building blocks of future quantum networks and quantum computers. Several systems currently under examination present promising features, but none of them yet fulfil all requirements for these aims. A particularly attractive strategy for the realization of these applications is the creation of strings of entangled photons, where quantum correlations among the photons are mediated by operations on the spin of the emitter. Here, we demonstrate for the first time the creation of spin-photon entanglement within the fundamental unit of a novel, scalable protocol based on time-to-polarization conversion. This principle allows us to bypass many of the imperfections of currently available photon sources and can therefore be utilized with a large variety of emitters. We execute the protocol using a nitrogen-vacancy centre in diamond, which possesses a long coherence lifetime and multiple spin degrees of freedom, thereby offering an outlook towards the creation of large entangled states.
Magnetohydrodynamics and Plasma Cosmology
Creators: name: Kleidis, K.
name: Kuiroukidis, A.
name: Papadopoulos, D. B.
name: Vlahos, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the linear magnetohydrodynamic (MHD) equations, both in the Newtonian and the general-relativistic limit, as regards a viscous magnetized fluid of finite conductivity and discuss instability criteria. In addition, we explore the excitation of cosmological perturbations in anisotropic spacetimes, in the presence of an ambient magnetic field. Acoustic, electromagnetic (e/m) and fast-magnetosonic modes, propagating normal to the magnetic field, can be excited, resulting in several implications of cosmological significance.
description: 9 pages, RevTeX, To appear in the Proceedings of the Peyresq X Meeting, IJTP Conference Series
title: Introduction
Creators: name: Dumora, Florence
name: Bennett, Fionn
Publisher: name: Savoirs en prisme
Year: 2013

description: Toute norme implique un pouvoir qui la définit comme limite, à laquelle est donnée une fonction pertinente en vertu du système dans lequel elle s’instaure. Cette norme entraîne, par l’acte même de normalisation, des conduites et des actes majoritaires qui manifestent l’adhésion (mimétique) mais, également, le surgissement de transgressions et de marginalisations, expression d’un refus pouvant correspondre à une créativité dont le principe est d’explorer le champ des possibles aux limites toujours repoussées. Ce volume présente une série d’études dont les premières abordent, sous la rubrique « Alliances du pouvoir et de la norme », le rapport de la norme à l’ordre qui régit l’organisation de toute société. Puis, les deux rubriques suivantes présentent les infléchissements que subit la norme, les résistances qui lui sont opposées, tant par la pensée libératrice (philosophique) – « L’appareil normatif à l’épreuve de l’humain: stratégies de pensée, libération créatrice » – que par les actes de création artistique, « L’art: un espace franc de la pensée critique ? ». Enfin sous le titre « Défis du langage : quêtes en marge du sens », apparaissent quatre études linguistiques qui explorent de quelle façon l’Être peut se dire et dans quelle mesure les concepts permettent cette expression ou au contraire la limitent.
description: Savoirs en prisme, No. 02 (2013): Normes, marges, transgressions
Cylindromyia pilipes
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Cylindromyia
Cylindromyia pilipes

description: Cylindromyia pilipes (LOEW, 1844)
OÖ, Kronstorf, Staninger Leiten, 9.8.17.
Neu für Oberösterreich.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 794, DOI: 10.5281/zenodo.4004374
The effects of camber on energy cost in the experienced and inexperienced wheelchair user
Creators: name: Perdios, Angeliki
Publisher: name: University of British Columbia
Year: 2009

description: Background: Wheelchair camber is the inclination of the rear wheels from vertical when viewed from the front. The proven benefits of rear-wheel camber are varied. In terms of energy cost and manoeuvrability, camber may appear to influence wheeling efficiency to a large extent. The few studies that have examined the energy cost of camber during wheeling have had differing results with most studies reporting an improvement in wheeling efficiency and overall ease of mobility. To date, this is the only study that has examined the effects of rear-wheel camber on energy cost in the experienced disabled individual during over ground steady state wheeling. Purpose: The purpose is to determine if there is a difference in energy cost between 0⁰, 3⁰ and 6⁰ of camber in disabled experienced wheelchair users during over ground wheeling. A secondary purpose was to determine if these differences were consistent across all three groups. Method: Three groups of subjects were examined: experienced disabled wheelchair users (T6 lesion and below) (DIS), able-bodied individuals with experience at manual wheeling (EXP), and able-bodied individuals with no experience at manual wheeling (IN). Subjects were tested using 0⁰, 3⁰ and 6⁰ of camber during steady state manual wheeling in slalom over a smooth hard surface. Data on heart rate, rating of perceived exertion (RPE), the visual analog scale for comfort (VAS) and a user preference questionnaire were collected for subjects in all three groups. Expired gas analysis and heart rate variability (HRV) were also collected for the DIS group Results: No significant difference in measures of energy cost, RPE, or VAS was shown for camber angle or group. Six degrees of camber emerged as the angle most preferred in terms of stability on a side-slope, hand comfort on the pushrim, manoeuvrability and overall preference. Discussion: All subjects, regardless of wheeling ability or injury status, showed no physiological preference for either 0⁰, 3⁰ and 6⁰ of camber. Specific questions about camber and stability, comfort and manoeuvrability showed there was a preference for 6⁰ of camber across all groups.
Physically viable solutions of anisotropic spheres in $f(\mathscr{R},\mathscr{G})$ gravity satisfying the Karmarkar condition
Creators: name: Mustafa, G.
name: Shamir, M. Farasat
name: Tie-Cheng, Xia
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper is devoted to discuss compact stars in $f(\mathscr{R},\mathscr{G})$ gravity, where $\mathscr{R}$ and $\mathscr{G}$ denote the Ricci scalar and Gauss-Bonnet invariant respectively. To meet this aim, we consider spherically symmetric space-time with anisotropic fluid distribution. In particular, the Karmarkar condition is used to explore the compact star solutions. Further, we choose two specific model of compact stars namely LMC X-4 (mass =1.29$M/M_{\odot}$ \& radii=9.711 km) and EXO 1785-248 (mass =1.30$M/M_{\odot}$ \& radii=8.849 km). We develop the field equations for $f(\mathscr{R},\mathscr{G})$ gravity by employing the Karmarkar condition with a specific model already reported in literature by Lake [Phys. Rev. D 67, 104015 (2003)]. We further consider the Schwarzschild geometry for matching conditions at the boundary. It is important to mention here that we calculate the values of all the involved parameter by imposing the matching condition. We have provided a detailed graphical analysis to discuss the physical acceptability of parameters, i.e., energy density, pressure, anisotropy, and gradients. We have also examined the stability of compacts stars by exploring the energy conditions, equation of state, generalized Tolman-Oppenheimer-Volkoff equation, causality condition, and adiabatic index. For present analysis, we predict some numerical values in tabular form for central gravitational metric functions, central density and central pressures components. We have also calculated the ratio $p_{rc}/ ρ_{c}$ to check the validity of Zeldovich's condition. Conclusively, it is found that our obtained solutions are physically viable with well-behaved nature in $f(\mathscr{R},\mathscr{G})$ modified gravity for the compact star models under discussion.
description: 17 Pages, 19 Figures
Radiation hardness and post irradiation regeneration behavior of GaInAsP solar cells
Creators: name: Lang, R.
name: Schön, J.
name: Lefèvre, J.
name: Boizot, B.
name: Dimroth, F.
name: Lackner, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recent developments have renewed the demand for solar cells with increased tolerance to radiation damage. To investigate the specific irradiation damage of 1 MeV electron irradiation in GaInAsP lattice matched to InP for varying In and P contents, a simulation based analysis is employed: by fitting the quantum efficiency and open-circuit voltage simultaneously before and after irradiation, the induced changes in lifetime are detected. Furthermore, the reduction of irradiation damage during regeneration under typical satellite operating conditions for GEO missions (60°C and AM0 illumination) is investigated. A clear decrease of the radiation damage is observed after post irradiation regeneration. This regeneration effect is stronger for increasing InP-fraction. It is demonstrated that the irradiation induced defect recombination coefficient for irradiation with 1 MeV electrons after regeneration for 216 hours can be described with a linear function of InP-fraction between 1*10$^{-5}$ cm$^2$/s for GaAs and 7*10$^{-7}$ cm$^2$/s for InP. The results show that GaInAsP is a promising material for radiation hard space solar cells.
description: Accepted manuscript; to be published in Solar Energy Materials and Solar Cells
Topological properties of Wazewski dendrite groups
Creators: name: Duchesne, Bruno
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: Dynamical Systems (math.DS)
subject: Logic (math.LO)
subject: FOS: Mathematics

description: Homeomorphism groups of generalized Ważewski dendrites act on the infinite countable set of branch points of the dendrite and thus have a nice Polish topology. In this paper, we study them in the light of this Polish topology. The group of the universal Ważewski dendrite $D_\infty$ is more characteristic than the others because it is the unique one with a dense conjugacy class. For this group $G_\infty$, we show some of its topological properties like existence of a comeager conjugacy class, the Steinhaus property, automatic continuity and the small index subgroup property. Moreover, we identify the universal minimal flow of $G_\infty$. This allows us to prove that point-stabilizers in $G_\infty$ are amenable and to describe the universal Furstenberg boundary of $G_\infty$.
description: An erratum for Theorem 1.12 has appeared in Journal de l'Ecole polytechnique - Math\'ematiques, Tome 11 (2024), pp. 1029-1034. This does not affect the other statements
A Note on Price Information in Commodity Markets with Evidence from the Cotton Market
Creators: name: Hudson, Darren
name: Ethridge, Don E.
name: Segarra, Eduardo
name: Hudson, Darren
name: Ethridge, Don E.
name: Segarra, Eduardo
Publisher: name: Unknown
Year: 1997
Subjects: Agricultural and Food Policy
Demand and Price Analysis

description: Theory and analysis of price information and its importance have typically assumed that the information is correct. Additionally, most analyses have centered on general price information assuming homogeneous products. This paper examines the implications of incorrect price information on the basis of quality, with evidence from prior research on cotton prices used as an illustration. Results of a conceptual analysis indicate that quality has direct implications on the production and marketing process. Incorrect information on prices of different quality leads to distortions in the market and market inefficiency.
The Coulomb impurity in 2D materials with strong spin-orbit interaction
Creators: name: Gindikin, Yasha
name: Sablikov, Vladimir A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that the spin-orbit interaction (SOI) produced by the Coulomb fields of charged impurities provides an efficient mechanism for the bound states formation. The mechanism can be realized in 2D materials with sufficiently strong Rashba SOI provided that the impurity locally breaks the structure inversion symmetry in the direction normal to the layer.
description: 4 pages, 3 figures
Is the Quantum State Real in the Hilbert Space Formulation?
Creators: name: Bhaumik, Mani L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Popular Physics (physics.pop-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The persistent debate about the reality of a quantum state has recently come under limelight because of its importance to quantum information and the quantum computing community. Almost all of the deliberations are taking place using the elegant and powerful but abstract Hilbert space formalism of quantum mechanics developed with seminal contributions from John von Neumann. Since it is rather difficult to get a direct perception of the events in an abstract vector space, it is hard to trace the progress of a phenomenon. Among the multitude of recent attempts to show the reality of the quantum state in Hilbert space, the Pusey-Barrett-Rudolph theory gets most recognition for their proof. But some of its assumptions have been criticized, which are still not considered to be entirely loophole free. A straightforward proof of the reality of the wave packet function of a single particle has been presented earlier based on the currently recognized fundamental reality of the universal quantum fields. Quantum states like the atomic energy levels comprising the wave packets have been shown to be just as real. Here we show that an unambiguous proof of reality of the quantum states gleaned from the reality of quantum fields can also provide an explicit substantiation of the reality of quantum states in Hilbert space.
description: 10 pages
The Evolutionary Status of Clusters of Galaxies at z ~ 1
Creators: name: Ford, H.
name: Postman, M.
name: Blakeslee, J. P.
name: Demarco, R.
name: Jee, M. J.
name: Rosati, P.
name: Holden, B. P.
name: Homeier, N.
name: Illingworth, G.
name: White, R. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Combined HST, X-ray, and ground-based optical studies show that clusters of galaxies are largely "in place" by $z \sim 1$, an epoch when the Universe was less than half its present age. High resolution images show that elliptical, S0, and spiral galaxies are present in clusters at redshifts up to $z \sim 1.3$. Analysis of the CMDs suggest that the cluster ellipticals formed their stars several Gyr earlier, near redshift 3. The morphology--density relation is well established at $z\sim1$, with star-forming spirals and irregulars residing mostly in the outer parts of the clusters and E/S0s concentrated in dense clumps. The intracluster medium has already reached the metallicity of present-day clusters. The distributions of the hot gas and early-type galaxies are similar in $z\sim1$ clusters, indicating both have largely virialized in the deepest potentials wells. In spite of the many similarities between $z\sim1$ and present-day clusters, there are significant differences. The morphologies revealed by the hot gas, and particularly the early-type galaxies, are elongated rather than spherical. We appear to be observing the clusters at an epoch when the sub-clusters and groups are still assembling into a single regular cluster. Support for this picture comes from CL0152 where the gas appears to be lagging behind the luminous and dark mass in two merging sub-components. Moreover, the luminosity difference between the first and second brightest cluster galaxies at $z\sim1$ is smaller than in 93% of present-day Abell clusters, which suggests that considerable luminosity evolution through merging has occurred since that epoch. Evolution is also seen in the bolometric X-ray luminosity function.
description: 18 pages, 12 figures, to appear in Penetrating Bars through Masks of Cosmic Dust: the Hubble Tuing Fork Strikes a New Note, eds. D.L. Block, K.C. Freeman, I. Puerari & R. Groess. Figures degraded to meet astroph size limit; a version with higher resolution figures may be downloaded from: http://acs.pha.jhu.edu/~jpb/z1clusters/ford_clusters.pdf
Tracing the Nuclear Accretion History of the Red Galaxy Population
Creators: name: Brand, Kate
name: Dey, Arjun
name: Brown, Michael J. I.
name: Watson, Casey R.
name: Jannuzi, Buell T.
name: Najita, Joan R.
name: Kochanek, Christopher S.
name: Shields, Joseph C.
name: Fazio, Giovani G.
name: Forman, William R.
name: Green, Paul J.
name: Jones, Christine J.
name: Kenter, Almus T.
name: McNamara, Brian R.
name: Murray, Steve S.
name: Rieke, Marcia
name: Vikhlinin, Alexey
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the evolution of the hard X-ray luminosity of the red galaxy population using a large sample of 3316 red galaxies selected over a wide range in redshift (0.3
description: 23 pages, accepted for publication in ApJ
Radio polarization and sub-mm observations of the Sombrero galaxy (NGC 4594) - Large-scale magnetic field configuration and dust emission
Creators: name: Krause, M.
name: Wielebinski, R.
name: Dumke, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed the nearby early-type spiral galaxy NGC 4594 (M 104, Sombrero galaxy) with the Very Large Array at 4.86 GHz, with the Effelsberg 100-m telescope at 8.35 GHz as well as with the Heinrich Hertz Telescope at 345 GHz in radio continuum. The 4.86 and 8.35 GHz data contain polarization information and hence information about the magnetic fields: we detected a large-scale magnetic field which is to our knowledge the first detection of a large-scale magnetic field in an Sa galaxy in the radio range. The magnetic field orientation in M104 is predominantly parallel to the disk but has also vertical components at larger z-distances from the disk. This field configuration is typical for normal edge-on spiral galaxies. The 345 GHz data pertain to the cold dust content of the galaxy. Despite the optical appearance of the object with the huge dust lane, its dust content is smaller than that of more late-type spirals.
description: 10 pages with 9 figures. Accepted for publication in A&A
PdSn Hollow Alloy Nanoparticles Prepared by in-situ Galvanic Replacement Process for Exclusive Hydrogen Evolution Reaction and Durable Electrocatalysis
Creators: name: Sasanka Deka
Publisher: name: figshare
Year: 2020
Subjects: subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences
subject: 30301 Chemical Characterisation of Materials
subject: 30603 Colloid and Surface Chemistry
subject: 30604 Electrochemistry
subject: Environmental Chemistry
subject: Inorganic Chemistry
subject: 30203 Inorganic Green Chemistry
subject: 30302 Nanochemistry and Supramolecular Chemistry

description: Herein, a novel nanostructured hollow bimetallic alloy system is introduced as highly efficient and stable electrocatalyst to produce H2 through water splitting reaction. Hollow nanospheres of Pd1-xSnx (x = 0.0-1.0) alloy having large electrochemically active sites in an autoclave was developed by taking the advantage of different redox potentials of Pd and Sn and of auto-galvanic replacement process. Maximum synergistic electron coupling or special conjunct effects in Pd0.6Sn0.4, hollow morphology and high electrochemically active surface area (488 cm2) were accounted towards the robust electrocatalysis during hydrogen evolution reaction at a low overpotential of 68 mV to reach a current density of 10 mA/cm2 in 1 M H2SO4.
Voronoi conjecture for five-dimensional parallelohedra
Creators: name: Garber, Alexey
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52B20, 52C07

description: We prove the Voronoi conjecture for five-dimensional parallelohedra. Namely, we show that if a convex five-dimensional polytope $P$ tiles $\mathbb R^5$ with translations, then $P$ is an affine image of the Dirichlet-Voronoi polytope for a five-dimensional lattice.
 Our proof is based on an exhaustive combinatorial analysis of possible dual 3-cells and incident dual 4-cells encoding local structures around two-dimensional faces of five-dimensional parallelohedron $P$ and their edges aiming to prove existence of a free direction for $P$ paired with new properties established for parallelohedra (in any dimension) that have a free direction that guarantee the Voronoi conjecture for $P$.
description: Initial versions of this work were prepared in collaboration with Alexander Magazinov. Unfortunately, he decided to step down as an author of the paper due to personal circumstances. Accepted to Inventiones Mathematicae
Cyzenis albicans
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Cyzenis
Cyzenis albicans

description: Cyzenis albicans (FALLÉN, 1810)
Bgld, Jois, Schieferberg, 26.3.17.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 794, DOI: 10.5281/zenodo.4004374
Low Mass X-ray Binary As the Progenitor of PSR J1713+0747
Creators: name: Chen, Wencong
name: Li, Xiangdong
name: Wang, Zhenru
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have calculated the evolution of low-mass X-ray binaries that leads to the formation of the binary radio pulsars like PSR J1713+0747. We show that the mass transfer is most likely to be nonconservative, due to unstable disk accretion, to account for the mass of PSR J1713+0747, which is close to its initial value. We assume that part of the lost material from the binary may form a circumbinary disk, and find that it can significantly influence the mass transfer processes. We briefly discuss the implications of the circumbinary disks on the evolution of low-mass X-ray binaries and the formation of low-mass binary pulsars.
description: 8 pages, 4 figures, accepted for publication in PASJ
KBA_polarisationMieScattering_gcarles.pdf
Creators: name: Carles, Guillem
name: Group, Imaging Concepts
Publisher: name: figshare
Year: 2020
Subjects: subject: Applied Physics
subject: 29901 Biological Physics
subject: FOS: Biological sciences
subject: 20501 Classical and Physical Optics
subject: FOS: Physical sciences
subject: Computational Physics

description: Online resource article describing how to perform Monte-Carlo simulations of optical systems including polarisation-sensitive Mie Scattering using Zemax OpticStudio.
Universal relations and bounds for fluctuations in quasistatic small heat engines
Creators: name: Ito, Kosuke
name: Xu, Guo-Hua
name: Jiang, Chao
name: Roldán, Édgar
name: Rica-Alarcón, Raúl A.
name: Martínez, Ignacio A.
name: Watanabe, Gentaro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The efficiency of any heat engine, defined as the ratio of average work output to heat input, is bounded by Carnot's celebrated result. However, this measure is insufficient to characterize the properties of miniaturized heat engines carrying non-negligible fluctuations, and a study of higher-order statistics of their energy exchanges is required. Here, we generalize Carnot's result for reversible cycles to arbitrary order moment of the work and heat fluctuations. Our results show that, in the quasistatic limit, higher-order statistics of a small engine's energetics depend solely on the ratio between the temperatures of the thermal baths. We further prove that our result for the second moment gives universal bounds for the ratio between the variances of work and heat for quasistatic cycles. We test this theory with our previous experimental results of a Brownian Carnot engine and observe the consistency between them, even beyond the quasistatic regime. Our results can be exploited in the design of thermal nanomachines to reduce their fluctuations of work output without marginalizing its average value and efficiency.
description: 28+5 pages, 4+2 figures, published version
Stimulated Raman Adiabatic Passage (STIRAP) Among Degenerate-Level Manifolds
Creators: name: Kis, Zsolt
name: Karpati, Attila
name: Shore, Bruce W.
name: Vitanov, Nikolay V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the conditions needed to accomplish stimulated Raman adiabatic passage (STIRAP) when the three levels (g, e and f) are degenerate, with arbitrary couplings contributing to the pump-pulse interaction (g - e) and to the Stokes-pulse interaction (e-f). We show that in general a sufficient condition for complete population removal from the g set of degenerate states for arbitrary, pure or mixed, initial state is that the degeneracies should not decrease along the sequence g, e and f. We show that when this condition holds it is possible to achieve the degenerate counterpart of conventional STIRAP, whereby adiabatic passage produces complete population transfer. Indeed, the system is equivalent to a set of independent three-state systems, in each of which a STIRAP procedure can be implemented. We describe a scheme of unitary transformations that produces this result. We also examine the cases when this degeneracy constraint does not hold, and show what can be accomplished in those cases. For example, for angular momentum states when the degeneracy of the g and f levels is less than that of the e level we show how a special choice for the pulse polarizations and phases can produce complete removal of population from the g set. Our scheme can be a powerful tool for coherent control in degenerate systems, because of its robustness when selective addressing of the states is not required or impossible. We illustrate the analysis with several analytically solvable examples, in which the degeneracies originate from angular momentum orientation, as expressed by magnetic sublevels.
description: 21 pages, 17 figures
Untitled ItemPdSn Hollow Alloy Nanoparticles Prepared by in-situ Galvanic Replacement Process for Exclusive Hydrogen Evolution Reaction and Durable Electrocatalysis
Creators: name: Sasanka Deka
Publisher: name: figshare
Year: 2020
Subjects: subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences
subject: 30301 Chemical Characterisation of Materials
subject: 30603 Colloid and Surface Chemistry
subject: 30604 Electrochemistry
subject: Environmental Chemistry
subject: Inorganic Chemistry
subject: 30203 Inorganic Green Chemistry
subject: 30302 Nanochemistry and Supramolecular Chemistry

description: Herein, a novel nanostructured hollow bimetallic alloy system is introduced as highly efficient and stable electrocatalyst to produce H2 through water splitting reaction. Hollow nanospheres of Pd1-xSnx (x = 0.0-1.0) alloy having large electrochemically active sites in an autoclave was developed by taking the advantage of different redox potentials of Pd and Sn and of auto-galvanic replacement process. Maximum synergistic electron coupling or special conjunct effects in Pd0.6Sn0.4, hollow morphology and high electrochemically active surface area (488 cm2) were accounted towards the robust electrocatalysis during hydrogen evolution reaction at a low overpotential of 68 mV to reach a current density of 10 mA/cm2 in 1 M H2SO4.