cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inflation in uplifted Supergravities
Creators: name: de Carlos, B.
name: Casas, J. A.
name: Guarino, A.
name: Moreno, J. M.
name: Seto, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a model of slow-roll inflation in the context of effective Supergravities arising from string theories. The uplifting of the potential (to generate dS or Minkowski vacua) is provided by the D-term associated to an anomalous U(1), in a fully consistent and gauge invariant formulation. We develop a minimal working model which incorporates eternal topological inflation and complies with observational constraints, avoiding the usual obstacles to implement successful inflation ("eta problem" and initial condition problem among others).
description: LaTeX 21 pages
Quantum tunneling of a singular potential
Creators: name: Muradyan, A. Zh.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Singularity of the potential function makes quantum tunneling problem mathematically underdetermined. To circumvent the difficulties it introduced in physics, a potential singularity cutoff is often used, followed by a reverse limit transition, or is a suitable self-adjoint extension of the Hamiltonian along the entire coordinate axis made. However, both of them somehow affect the singular nature of the problem, and so I discuss here how quantum tunneling will behave if the original singular nature of the Schrodinger equation left untuched. To do this, I use the property of the probability density current that the singularities are mutually destroyed in it. It is found that the mildly singular potential has a finite, but unusual tunneling transparency, in particular, a non-zero value at zero energy of incident particle. The tunneling of one dimensional Coulomb potential exhibits infinitely fast and complete oscillation at the zero energy boundary and a suppresion to zero in the high-energy limit. In the more singular region, the tunneling becomes forbidden, theby repeating the well-known result of the regularized counterparts.
description: The quantum tunneling of a potential is considered with the preservation of the singular character of the corresponding Scrodinger equation. It is found that that the weakly singular and Coulomb potentials are partially penetrable but reveals non-standard behavior, in particular, accelerating complete oscillations with the approach to the zero energy
Operator fidelity susceptibility: an indicator of quantum criticality
Creators: name: Wang, Xiaoguang
name: Sun, Zhe
name: Wang, Z. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce the operator fidelity and propose to use its susceptibility for characterizing the sensitivity of quantum systems to perturbations. Two typical models are addressed: one is the transverse Ising model exhibiting a quantum phase transition, and the other is the one dimensional Heisenberg spin chain with next-nearest-neighbor interactions, which has the degeneracy. It is revealed that the operator fidelity susceptibility is a good indicator of quantum criticality regardless of the system degeneracy.
description: Four pages, two figures
Addressing the spiritual dimension of learning
Creators: name: de Souza, Marian
Publisher: name: Australian Catholic University
Year: 2013
Subjects: Children and spirituality
Young people and spirituality
Prejudice and racism in learning
Non-conscious learning
Intuitive learning
Intuition
Dimensions of learning
Complementarity of cognitive
affective and spiritual
Spiritual dimension of learning
Spirituality and education

description: Addressing the spiritual dimension of learning was a project over several years that involved a broad and in-depth study of the research literature in the following areas: - Contemporary and traditional understandings of spirituality - Learning theory and behaviour - Cognitive and affective learning - Characteristics of Spirituality and spiritual learning - Classroom environments to promote transformative learning - Intuition and non-conscious (unconscious) learning
Οικολογικά κινήματα. Παρουσίαση και κριτική θεώρηση από άποψη oρθόδοξης οικολογικής ηθικής
Creators: name: Καραντώνας, Ρωμανός Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Οικολογικά Κινήματα
Οικολογία και Ορθοδοξία
Χριστιανισμός και οικολογική κίνηση
Ecological Movements
Ecology and Orthodoxy
Christianity and ecological movement

description: Σκοπός της διπλωματικής εργασίας ήταν η ανάλυση των χαρακτηριστικών των οικολογικών κινημάτων και η αξιολόγησή τους με βάση την θεώρηση της Ορθόδοξης Ηθικής για το περιβάλλον. Αναλύεται η έννοια της οικολογίας και οι προεκτάσεις της όπως επίσης και η οικολογική κρίση η οποία είναι η ουσιαστική αιτία της οικολογικής κίνησης. Στη συνέχεια, διατυπώνεται η δράση της οικολογικής κίνησης και τα χαρακτηριστικά των περιβαλλοντικών κινημάτων. Τέλος, παρουσιάζεται η οικολογία κατά την ορθόδοξη χριστιανική διδασκαλία, ασκείται κριτική της οικολογικής κίνησης και διατυπώνεται η αντιμετώπιση της οικολογικής κρίσης από την Ορθόδοξη Χριστιανική σκοπιά
description: The aim of the diplomatic work was to analyze the characteristics of ecological movements and to evaluate them on the basis of the Orthodox Ethics for the environment. It analyzes the concept of ecology and its impacts as well as the ecological crisis which is the essential cause of ecological movement. Then the action of ecological movement and the characteristics of environmental movements are formulated. Finally, ecology is presented during Orthodox Christian teaching, ecological movement is criticized and the ecological crisis is addressed by the Orthodox Christian perspective
Reconciliation and reading in contemporary Australian literature
Creators: name: Nolan, Maggie
name: Clarke, Robert
Publisher: name: Australian Catholic University
Year: 2012

description: This qualitative research data looks at book clubs. Focus groups were used to find out to what extent literature enhances reconciliation, if at all and whether reading makes a difference. Focus groups were held in 2012 in Brisbane, Townsville, Hobart and Launceston. This project is being conducted jointly with Dr Robert Clarke, University of Tasmania. The data is still being analysed. Internal Australian Catholic University funding has been provided for the project. This is a pilot for a larger project. The data consists of Word transcripts and digital recordings stored on DVD and hard drives. There is also an “Information for Participants file”, an “interview Protocol” and a Survey form.
A narrative exploration of the meaning of companion animals throughout the lives of non-institutionalized elderly widows living alone
Creators: name: Stokowski, Teresa Angela
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to explore the meaning of companion animals throughout the lives of non-institutionalized elderly widows living alone. Three widows ranging in age from 70 to 85 were recruited from friends and acquaintances for participation in this study. The meaning of companion animals in their lives was studied by using a narrative approach. The data was analyzed for emerging themes and integrated into a list of common themes of the meaning of companion animals. The results of this study will hopefully assist people in understanding the meaning and value of companion animals to non-institutionalized elderly widows living alone.
Traceable 2D finite-element simulation of the whispering-gallery modes of axisymmetric electromagnetic resonators
Creators: name: Oxborrow, Mark
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper explains how a popular, commercially-available software package for solving partial-differential-equations (PDEs), as based on the finite-element method (FEM), can be configured to calculate, efficiently, the frequencies and fields of the whispering-gallery (WG) modes of axisymmetric dielectric resonators. The approach is traceable; it exploits the PDE-solver's ability to accept the definition of solutions to Maxwell's equations in so-called `weak form'. Associated expressions and methods for estimating a WG mode's volume, filling factor(s) and, in the case of closed(open) resonators, its wall(radiation) loss, are provided. As no transverse approximation is imposed, the approach remains accurate even for quasi-transverse magnetic/electric modes of low, finite azimuthal mode order. The approach's generality and utility are demonstrated by modeling several non-trivial structures: (i) two different optical microcavities [one toroidal made of silica, the other an AlGaAs microdisk]; (ii) a 3rd-order sapphire:air Bragg cavity; (iii) two different cryogenic sapphire WG-mode resonators; both (ii) and (iii) operate in the microwave X-band. By fitting one of (iii) to a set of measured resonance frequencies, the dielectric constants of sapphire at liquid-helium temperature have been estimated.
description: 10 pages, 8 figures, submitted to IEEE Microwave Theory and Techniques. Last revision March 19 2007. This paper is a significantly abridged/revised version of quant-ph/0607156
The interstellar medium of the Antennae Galaxies
Creators: name: Schulz, A.
name: Henkel, C.
name: Muders, D.
name: Mao, R. Q.
name: Roellig, M.
name: Mauersberger, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: To study the properties of the interstellar medium in the prototypical merging system of the Antennae galaxies (NGC 4038 and NGC 4039), we have obtained CO(1-0), (2-1) and (3-2) line maps, as well as a map of the 870 micron continuum emission. Our results are analysed in conjunction with data from X-ray to radio wavelengths. In order to distinguish between exact coincidence and merely close correspondence of emission features, we compare the morphological structure of the different emission components at the highest available angular resolution. To constrain the physical state of the molecular gas, we apply models of photon dominated regions (PDRs) that allow us to fit CO and [CII] data, as well as other indicators of widespread PDRs in the Antennae system, particularly within the super giant molecular cloud (SGMC) complexes of the interaction region (IAR) between the two galaxies. The modeled clouds have cores with moderately high gas densities up to 4 10^4 / cm^3 and rather low kinetic temperatures <=25K). At present, all these clouds, including those near the galactic nuclei, show no signs of intense starburst activity. Thermal radio or mid-infrared emission are all observed to peak slightly offset from the molecular peaks. The total molecular gas mass of the Antennae system adds up to \~10^10 M_sun. In the vicinity of each galactic nucleus, the moleculargas mass, 1-2 10^9 M_sun, exceeds that of the Galactic centre region by a factorof almost 100. Furthermore, the gas does not seem to deviate much from the N_{H_2}/I_CO ratio typical of the disk of our Galaxy rather than our Galactic centre.
description: 15 pages, 6 figures
Coffee Lectures Forschungsdatenmanagement an der Universität Hildesheim (2).
Creators: name: Strauch, Annette
Publisher: name: Zenodo
Year: 2019
Subjects: Forschungsdaten
Forschungsdatenmanagement
Coffee Lectures

description: Die Nachhaltigkeit von Forschungsdaten, das Teilen von Forschungsdaten oder Publikationen von Datenbeständen gewinnen zunehmend an Bedeutung. Journals verlangen oft die Verfügbarmachung von Publikationen der zugrundeliegenden Daten eines Artikels. Universitäten, darunter auch die Universität Hildesheim, verabschieden Research Data Policies, und Forscherinnen und Forscher diskutieren sowohl die Chancen als auch die Risiken von "Open Data", die Herausforderungen des Datenschutzes und der Forschungsethik.
P - The Environment - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders views on: - environmental issues; - environmental activism; - climate change.
Asymmetric Fermi superfluid in a harmonic trap
Creators: name: Pao, C. -H.
name: Yip, S. -K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider a dilute two-component atomic fermion gas with unequal populations in a harmonic trap potential using the mean field theory and the local density approximation. We show that the system is phase separated into concentric shells with the superfluid in the core surrounded by the normal fermion gas in both the weak-coupling BCS side and near the Feshbach resonance. In the strong-coupling BEC side, the composite bosons and left-over fermions can be mixed. We calculate the cloud radii and compare axial density profiles systemically for the BCS, near resonance and BEC regimes.
description: 15 pages, 5 figures
Temperature dependent coherence properties of NV ensemble in diamond up to 600K
Creators: name: Lin, Shengran
name: Weng, Changfeng
name: Yang, Yuanjie
name: Zhao, Jiaxin
name: Guo, Yuhang
name: Zhang, Jian
name: Lou, Liren
name: Zhu, Wei
name: Wang, Guanzhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nitrogen-vacancy (NV) center in diamond is an ideal candidate for quantum sensors because of its excellent optical and coherence property. However, previous studies are usually conducted at low or room temperature. The lack of full knowledge of coherence properties of the NV center at high temperature limits NV's further applications. Here, we systematically explore the coherence properties of the NV center ensemble at temperatures from 300 K to 600 K. Coherence time $T_2$ decreases rapidly from $184 μs$ at 300 K to $30 μs$ at 600 K, which is attributed to the interaction with paramagnetic impurities. Single-quantum and double-quantum relaxation rates show an obvious temperature-dependent behavior as well, and both of them are dominated by the two phonon Raman process. While the inhomogeneous dephasing time $T_2^*$ and thermal echo decoherence time $T_{TE}$ remain almost unchanged as temperature rises. Since $T_{TE}$ changed slightly as temperature rises, a thermal-echo-based thermometer is demonstrated to have a sensitivity of $41 mK/\sqrt{Hz}$ at 450 K. These findings will help to pave the way toward NV-based high-temperature sensing, as well as to have a more comprehensive understanding of the origin of decoherence in the solid-state qubit.
description: 7 pagees, 5 figures
G - Participation - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes:1) A core set of questions to explore attenders' self description and views on: - Attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders' view on voluntary participation to wider community.
A Tale of Two Crimes: An Analysis of Criminal Sentencing of White-Collar and Street Offenders
Creators: name: Testa, Alexander
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Criminology
subject: FOS: Law
subject: Law
subject: Punishment
subject: Sentencing
subject: White-Collar Crime

description: Though a long-standing history of scholarship has sought to understand the potential for disparities in criminal punishment based on ascribed status characteristics, contemporary research has largely ignored the ways in which punishment outcomes varies across offenders convicted of offenses traditionally viewed as either white-collar or street crimes. Using data from United States federal district courts from fiscal years 2008-2010, this research expands upon current knowledge by comparing embezzlement and larceny offenders in federal criminal courts across a variety of punishment processes and outcomes. The findings suggest a substantial degree of variation in punishment severity between embezzlement and larceny offenders across modes of punishment. Generally, the question of whether white-collar offenders are treated severely, leniently, or about the same as compared to non-violent property offenders is largely dependent upon the outcome of interest and the specific types of offenses included in the analysis.
O - Social Issues and the Church - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders' views on social issues and the church.
Additional file 1 of Genome-wide identification and expression profiling of DREB genes in Saccharum spontaneum
Creators: name: Li, Zhen
name: Wang, Gang
name: Liu, Xihui
name: Wang, Zhengchao
name: Zhang, Muqing
name: Zhang, Jisen
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1 Sequence features of DREBs in S. spontaneum.
Symmetries and Exact Solutions of Nonlinear Dirac Equations
Creators: name: Fushchych, Wilhelm
name: Zhdanov, Renat
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The authors give a detailed information about symmetry (Lie, non-Lie, conditional) of nonlinear PDEs for spinor, vector and scalar fields; using advanced methods of group-theoretical, symmetry analysis construct wide families of classical solutions of the nonlinear Dirac, Yang-Mills, Maxwell-Dirac, Dirac-d'Alembert, d'Alembert-Hamilton equations; expound a new symmetry approach to variable separation in linear and nonlinear PDEs, which allows, in particular, to classify separable Schroedinger equations. The book offers a uniform and relatively simple presentation of a considerable amount of material that is otherwise not easily available. The basic part of the book contains original results obtained by the authors. It is sure to be of interest to mathematical and theoretical physicists, particularly those working on classical and quantum field theories and on nonlinear dynamical systems.
description: electronic version of the book published in 1997 by Institute of Mathematics, Kiev, Ukraine
F - New Initiatives - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations.The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders' views on local church new initiatives.
C - Worship - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders' views on: - worship; - religious practices; - religious knowledge.
N - Social Issues - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders views on: - social issues; - the wider world; - political views.
Emergent spatial patterns of coexistence in species-rich plant communities
Creators: name: Villegas, Pablo
name: Gili, Tommaso
name: Caldarelli, Guido
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Statistical Physics has proved essential to analyze multi-agent environments. Motivated by the empirical observation of various non-equilibrium features in Barro Colorado and other ecological systems, we analyze a plant-species abundance model, presenting analytical evidence of scale-invariant plant clusters and non-trivial emergent modular correlations. Such first theoretical confirmation of a scale-invariant region, based on percolation processes, reproduces the key features in actual ecological ecosystems and can confer the most stable equilibrium for ecosystems with vast biodiversity.
description: 7 pages, 5 figures, and Supp. Inf
B - Coming to Faith - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' vie on: - coming to faith; - growing faith; - experience with Christian camps - leadership and direction. 2) A set of questions to explore attenders' views on: - coming to faith; - growing faith; - experience with Christian camps.
Planets in binary systems: is the present configuration indicative of the formation process?
Creators: name: Marzari, F.
name: Barbieri, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The present dynamical configuration of planets in binary star systems may not reflect their formation process since the binary orbit may have changed in the past after the planet formation process was completed. An observed binary system may have been part of a former hierarchical triple that became unstable after the planets completed their growth around the primary star. Alternatively, in a dense stellar environment even a single stellar encounter between the star pair and a singleton may singificantly alter the binary orbit. In both cases the planets we observe at present would have formed when the dynamical environment was different from the presently observed one. We have numerically integrated the trajectories of the stars (binary plus singleton) and of test planets to investigate the abovementioned mechanisms. Our simulations show that the circumstellar environment during planetary formation around the primary was gravitationally less perturbed when the binary was part of a hierarchical triple because the binary was necessarely wider and, possibly, less eccentric. This circumstance has consequences for the planetary system in terms of orbital spacing, eccentricity, and mass of the individual planets. Even in the case of a single stellar encounter the present appearance of a planetary system in a binary may significantly differ from what it had while planet formation was ongoing. However, while in the case of instability of a triple the trend is always towards a tighter and more eccentric binary system, when a single stellar encounter affects the system the orbit of the binary can become wider and be circularized.
description: 5 pages, 5 figures Accepted for publication on A&A
Ultrafast dynamics of coherences in the quantum Hall system
Creators: name: Dani, K. M.
name: Tignon, J.
name: Breit, M.
name: Chemla, D. S.
name: Kavousanaki, E. G.
name: Perakis, I. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using three-pulse four-wave-mixing optical spectroscopy, we study the ultrafast dynamics of the quantum Hall system. We observe striking differences as compared to an undoped system, where the 2D electron gas is absent. In particular, we observe a large off-resonant signal with strong oscillations. Using a microscopic theory, we show that these are due to many-particle coherences created by interactions between photoexcited carriers and collective excitations of the 2D electron gas. We extract quantitative information about the dephasing and interference of these coherences.
description: 4 pages, 4 figures, to be published in Phys. Rev. Lett
Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: manifestation of spin-orbit band splitting
Creators: name: Sai, P.
name: Potashin, S. O.
name: Szola, M.
name: Yavorskiy, D.
name: Cywinski, G.
name: Prystawko, P.
name: Lusakowski, J.
name: Ganichev, S. D.
name: Rumyantsev, S.
name: Knap, W.
name: Kachorovskii, V. Yu.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the study of the magnetic ratchet effect in AlGaN/GaN heterostructures superimposed with lateral superlattice formed by dual-grating gate structure. We demonstrate that irradiation of the superlattice with terahertz beam results in the dc ratchet current, which shows giant magneto-oscillations in the regime of Shubnikov de Haas oscillations. The oscillations have the same period and are in phase with the resistivity oscillations. Remarkably, their amplitude is greatly enhanced as compared to the ratchet current at zero magnetic field, and the envelope of these oscillations exhibits large beatings as a function of the magnetic field. We demonstrate that the beatings are caused by the spin-orbit splitting of the conduction band. We develop a theory which gives a good qualitative explanation of all experimental observations and allows us to extract the spin-orbit splitting constant α_{\rm SO}= 7.5 \pm 1.5 meV \unicode{x212B}. We also discuss how our results are modified by plasmonic effects and show that these effects become more pronounced with decreasing the period of the gating gate structures down to sub-microns.
description: 15 pages, 12 figures
Measuring Abundance with Abundancy Index
Creators: name: Guha, Kalpok
name: Ghosh, Sourangshu
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 11A25 (Primary) 11M26 (Secondary)

description: A positive integer $n$ is called perfect if $ σ(n)=2n$, where $σ(n)$ denote the sum of divisors of $n$. In this paper we study the ratio $\frac{σ(n)}{n}$. We define the function Abundancy Index $I:\mathbb{N} \to \mathbb{Q}$ with $I(n)=\frac{σ(n)}{n}$. Then we study different properties of the Abundancy Index and discuss the set of Abundancy Index. Using this function we define a new class of numbers known as superabundant numbers. Finally, we study superabundant numbers and their connection with Riemann Hypothesis.
description: Accepted in Mathematics Exchange (Ball State University), Vol 15, 2021
Διαδικτυακές προσβολές της ανηλικότητας στο 19ο Κεφάλαιο του ΠΚ
Creators: name: Χρηστάκη, Ιωάννα Ευγένιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Διαδίκτυο-Ανήλικος
Ποινικός Κώδικας
Internet-Minor
Penal Code

description: Αντικείμενο της διπλωματικής εργασίας είναι η μελέτη των διαδικτυακών προσβολών των ανηλίκων και, συγκεκριμένα, αυτών που αφορούν στη γενετήσια ζωή. Το πρώτο μέρος της εργασίας αφιερώνεται στην εξέταση του εγκληματολογικού φαινομένου, καθώς εντοπίζονται οι κίνδυνοι που εγκυμονεί η χρήση του Διαδικτύου για τους ανηλίκους, κατηγοριοποιούνται οι παραβατικές συμπεριφορές που αφορούν στον τομέα της γενετήσιας ζωής τους και συνδέεται η ευρεία διάδοση της χρήσης των πληροφοριακών συστημάτων με την αύξηση των προσβολών των ανηλίκων μέσω αυτών. Στο δεύτερο μέρος μελετάται η αντιμετώπιση του φαινόμενου σε διεθνές επίπεδο, εντοπίζοντας ως σημαντικότερο κείμενο την Οδηγία 2011/93/ΕΕ. Στο τρίτο μέρος της εργασίας παρουσιάζεται το ελληνικό πλαίσιο. Αρχικά, ερμηνεύονται οι βασικοί όροι που απαντώνται στα σχετικά άρθρα του ΠΚ και στη συνέχεια αναλύονται τα επιμέρους αδικήματα, ήτοι αυτό της διαδικτυακής προσβολής της γενετήσιας αξιοπρέπειας ανηλίκων, της πορνογραφίας ανηλίκων, την προσέλκυσης παιδιών για γενετήσιους λόγους και των πορνογραφικών παραστάσεων ανηλίκων. Τέλος, το τέταρτο μέρος επικεντρώνεται στη σύγκριση μεταξύ του ελληνικού και του ευρωπαϊκού πλαισίου
description: The subject of this thesis is the study of online sexual crimes against minors. The first part of the thesis is devoted to the study of the criminological phenomenon by identifying the arising risks of the use of the Internet by minors, classifying the deviant sexual acts and correlating the widespread use of information systems with the increase of those acts. In the second part, we examine the countermeasures of the phenomenon at an International level, defining as the main regulation the Directive 2011/93/EU. The third part of the thesis is about the Greek legislation. First, we interpret the basic terms used at the relevant articles of the Greek Penal Code and then we analyze the relevant crimes and specifically the crimes of online sexual assault of minors, child pornography, solicitation of children for sexual purposes and pornographic performances. At the end, part four focuses on the comparative examination of the Greek and the European legislation
H - Sharing of the Faith - 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; - leadership and direction. 2) A set of questions to explore attenders' views on: - sharing of faith; - reasons for joining local church; - faith of own children.
Q - Employment, Donations and Self Improvement- 2011 National Church Life Survey: Sample Attender Survey
Creators: name: Powell, Ruth Margaret
Publisher: name: NCLS Research
Year: 2011
Subjects: National Church Life Survey (NCLS)
survey
church attenders
Protestant
Catholic

description: Data from the NCLS survey administered to Australian church attenders 15 years and over. Approximately 1800 respondents. The survey was administered to attenders of 23 Australian denominations, including Catholic, mainstream Protestant, Pentecostal, and other denominations. The questionnaire includes: 1) A core set of questions to explore attenders' self description and views on: - attendance; - faith; - relationship to church; and - leadership and direction. 2) A set of questions to explore attenders views on: - faith and work; - financial contributions to all religious causes; - religious practices.
Change processes in psychodrama
Creators: name: Baum, Susan
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study is to investigate the meaning of a significant psychodrama experience for participants in a psychodrama workshop. After the workshop is completed, participants were invited to take part in the study. The study involved a taped interview session using open ended questions and a written confirmation of analysis. The coresearchers were asked to describe their experiences after the psychodrama. The interview was tape recorded and transcribed. The transcripts were analyzed for themes. Theme statements were mailed to the co-researchers for verification. Additional remarks or deletions by the co-researchers were incorporated into the theme statements. The theme statements were then clustered and a description of the experience created. From the description, an essential structure was established. The study used an existential - phenomenologicai approach to describe the meaning of the experience for the group of six co - researchers.
Normal state of highly polarized Fermi gases: simple many-body approaches
Creators: name: Combescot, R.
name: Recati, A.
name: Lobo, C.
name: Chevy, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the problem of a single \down atom in the presence of a Fermi sea of \up atoms, in the vicinity of a Feshbach resonance. We calculate the chemical potential and the effective mass of the \down atom using two simple approaches: a many-body variational wave function and a T-matrix approximation. These two methods lead to the same results and are in good agreement with existing quantum Monte-Carlo calculations performed at unitarity and, in one dimension, with the known exact solution. Surprisingly, our results suggest that, even at unitarity, the effect of interactions is fairly weak and can be accurately described using single particle-hole excitations. We also consider the case of unequal masses.
description: 5 pages, 2 figures
Infrared Gluon and Ghost Propagators from Lattice QCD. Results from large asymmetric lattices
Creators: name: Oliveira, O.
name: Silva, P. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report on the infrared limit of the quenched lattice Landau gauge gluon and ghost propagators as well as the strong coupling constant computed from large asymmetric lattices. The infrared lattice propagators are compared with the pure power law solutions from Dyson-Schwinger equations (DSE). For the gluon propagator, the lattice data is compatible with the DSE solution. The preferred measured gluon exponent being $\sim 0.52$, favouring a null zero momentum propagator. The lattice ghost propagator shows finite volume effects and, for the volumes considered, the propagator does not follow a pure power law. Furthermore, the strong coupling constant is computed and its infrared behaviour investigated.
description: Talk given at QNP06; final version with improved english, accepted for publication at EPJA
Detection loophole in asymmetric Bell experiments
Creators: name: Brunner, Nicolas
name: Gisin, Nicolas
name: Scarani, Valerio
name: Simon, Christoph
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The problem of closing the detection loophole with asymmetric systems, such as entangled atom-photon pairs, is addressed. We show that, for the Bell inequality I_3322, a minimal detection efficiency of 43% can be tolerated for one of the particles, if the other one is always detected. We also study the influence of noise and discuss the prospects of experimental implementation.
description: 4 pages, 2 figures. Main result unchanged, wrong corollary removed
Negative Komar Mass of Single Objects in Regular, Asymptotically Flat Spacetimes
Creators: name: Ansorg, Marcus
name: Petroff, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study two types of axially symmetric, stationary and asymptotically flat spacetimes using highly accurate numerical methods. The one type contains a black hole surrounded by a perfect fluid ring and the other a rigidly rotating disc of dust surrounded by such a ring. Both types of spacetime are regular everywhere (outside of the horizon in the case of the black hole) and fulfil the requirements of the positive energy theorem. However, it is shown that both the black hole and the disc can have negative Komar mass. Furthermore, there exists a continuous transition from discs to black holes even when their Komar masses are negative.
description: 7 pages, 2 figures, document class iopart. v2: changes made (including title) to coincide with published version
On the Growth of Perturbations as a Test of Dark Energy
Creators: name: Bertschinger, Edmund
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The strongest evidence for dark energy comes presently from geometric techniques such as the supernova distance-redshift relation. By combining the measured expansion history with the Friedmann equation one determines the energy density and its time evolution, hence the equation of state of dark energy. Because these methods rely on the Friedmann equation which has not been independently tested it is desirable to find alternative methods that work for both general relativity and other theories of gravity. Assuming that sufficiently large patches of a perturbed Robertson-Walker spacetime evolve like separate Robertson-Walker universes, that shear stress is unimportant on large scales and that energy and momentum are locally conserved, we derive several relations between long-wavelength metric and matter perturbations. These relations include generalizations of the initial-value constraints of general relativity. For a class of theories including general relativity we reduce the long-wavelength metric, density, and velocity potential perturbations to quadratures including curvature perturbations, entropy perturbations, and the effects of nonzero background curvature. When combined with the expansion history measured geometrically, the long-wavelength solution provide a test that may distinguish modified gravity from other explanations of dark energy.
description: 25 pages, 1 figure, submitted to ApJ; references added; expanded discussion of entropy perturbations, initial-value constraints and alternative theories of gravity
Hodge genera of algebraic varieties, II
Creators: name: Cappell, Sylvain E.
name: Libgober, Anatoly
name: Maxim, Laurentiu
name: Shaneson, Julius L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 57R20, 32S20, 14C30, 32S35, 32S50, 14D05, 14D06, 14D07, 55N33 (Primary) 57R45, 32S60, 13D15, 16E20 (Secondary)

description: We study the behavior of Hodge-theoretic genera under morphisms of complex algebraic varieties. We prove that the additive $χ_y$-genus which arises in the motivic context satisfies the so-called ``stratified multiplicative property", which shows how to compute the invariant of the source of a proper surjective morphism from its values on various varieties that arise from the singularities of the map. By considering morphisms to a curve, we obtain a Hodge-theoretic analogue of the Riemann-Hurwitz formula. We also study the contribution of monodromy to the $χ_y$-genus of a smooth projective family, and prove an Atiyah-Meyer type formula for twisted $χ_y$-genera. This formula measures the deviation from multiplicativity of the $χ_y$-genus, and expresses the correction terms as higher-genera associated to cohomology classes of the quotient of the total period domain by the action of the monodromy group. By making use of Saito's theory of mixed Hodge modules, we also obtain formulae of Atiyah-Meyer type for the corresponding Hirzebruch characteristic classes.
description: V2: No major changes in content, but some results are stated in greater generality (original proofs not altered); examples added; corrected a calculation in Example 2.9(2) following a comment of J. Steenbrink; updated references, removed typos, improved exposition; the section on intersection homology genera removed (it will be incorporated in a future paper)
Numerical requirements for simulations of self gravitating and non-self gravitating disks
Creators: name: Nelson, Andrew F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (highly abridged) We define three requirements for accurate simulations that attempt to model circumstellar disks and the formation of collapsed objects (e.g. planets) within them. First, we define a resolution requirement based on the wavelength for neutral stability of self gravitating waves in the disk. For particle based or grid based simulations, this criterion takes the form, respectively, of a minimum number of particles per critical (`Toomre') mass or maximum value of a `Toomre number', $T= δx/λ_T$, where the wavelength, $λ_T$, is the wavelength for neutral stability for waves in disks. We apply our criterion to particle simulations and find that in order to prevent numerically induced fragmentation of the disk, the Toomre mass must be resolved by a minimum of six times the average number of neighbor particles used. Second, we require that particle based simulations with self gravity use a variable gravitational softening. We show that using a fixed gravitational softening length can lead either to artificial suppression or enhancement of structure (including fragmentation) in a given disk, or both in different locations of the same disk. Third, we require that 3D SPH simulations resolve the disk's vertical structure with at least $\sim4$ particle smoothing lengths per scale height at the disk midplane and suggest that a similar criterion applies to grid based simulations. Failure to meet this criterion leads to underestimates in the midplane density of up to 30--50% at resolutions common in the literature.
description: Accepted for publication in MNRAS, 40pg with 24 figures. Better quality color figures available from the author
LIPOPROTEIN A( a) LEVEL AND HUMORAL AND CELLULAR IMMUNITY INDICATORS IN CORONARY ATHEROSCLEROSIS PROGRESSION IN PATIENTS WITH STABLE CHRONARY DISEASE AFTER STENTING
Creators: name: Majidova, G.T.
name: Kholikulova, M.M.
Publisher: name: Zenodo
Year: 2025

description: Atherogenesis is based on a chronic inflammatory process developing in the wall of large and medium arteries against the background of lipid metabolism disorders and endothelial damage. Increased concentration of lipoprotein a( a) [ Lp (a)] in blood plasma is an independent risk factor for the occurrence and development of atherosclerotic lesions of various localizations.
On the survival of Floquet-Bloch states in the presence of scattering
Creators: name: Aeschlimann, S.
name: Sato, S. A.
name: Krause, R.
name: Chávez-Cervantes, M.
name: De Giovannini, U.
name: Hübener, H.
name: Forti, S.
name: Coletti, C.
name: Hanff, K.
name: Rossnagel, K.
name: Rubio, A.
name: Gierz, I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Floquet theory has spawned many exciting possibilities for electronic structure control with light with enormous potential for future applications. The experimental realization in solids, however, largely remains pending. In particular, the influence of scattering on the formation of Floquet-Bloch states remains poorly understood. Here we combine time- and angle-resolved photoemission spectroscopy with time-dependent density functional theory and a two-level model with relaxation to investigate the survival of Floquet-Bloch states in the presence of scattering. We find that Floquet-Bloch states will be destroyed if scattering -- activated by electronic excitations -- prevents the Bloch electrons from following the driving field coherently. The two-level model also shows that Floquet-Bloch states reappear at high field intensities where energy exchange with the driving field dominates over energy dissipation to the bath. Our results clearly indicate the importance of long scattering times combined with strong driving fields for the successful realization of various Floquet phenomena.
description: 27 pages, 5 figues
Holography in 7D Randall-Sundrum cosmology
Creators: name: Mazzanti, Liuba
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We define the 7D Randall-Sundrum (RS) background and construct the corresponding 6D theory via AdS/CFT duality. In simple approximations, the Friedmann equation derived from 7D RS cosmology and the brane view-point results exactly match. Possible cosmologies on the bulk side are also outlined.
description: 2 pages, 1 figure, talk given at the Cargese Summer School, May 22 - June 3, 2006