cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Growth rates for geometric complexities and counting functions in polygonal billiards
Creators: name: Gutkin, Eugene
name: Rams, Michal
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We introduce a new method for estimating the growth of various quantities arising in dynamical systems. We apply our method to polygonal billiards on surfaces of constant curvature. For instance, we obtain power bounds of degree two plus epsilon in length for the number of billiard orbits between almost all pairs of points in a planar polygon.
description: 25 pages, 2 figures
UV Luminosity Functions at z~4, 5, and 6 from the HUDF and other Deep HST ACS Fields: Evolution and Star Formation History
Creators: name: Bouwens, Rychard J.
name: Illingworth, Garth D.
name: Franx, Marijn
name: Ford, Holland
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the ACS BViz data from the HUDF and all other deep HST ACS fields (including the GOODS fields) to find large samples of star-forming galaxies at z~4 and z~5 and to extend our previous z~6 sample. These samples contain 4671, 1416, and 627 B, V, and i dropouts, respectively, and reach to extremely low luminosities (0.01-0.04 L* or M(UV)~-16 to -17), allowing us to determine the rest-frame UV luminosity function (LF) and faint-end slope alpha at z~4-6 to high accuracy. We find faint-end slopes alpha of -1.73+/-0.05 at z~4, -1.66+/-0.09 at z~5, and -1.74+/-0.16 at z~6 -- suggesting that the faint-end slope is very steep and shows little evolution with cosmic time. We find that M*(UV) brightens considerably in the 0.7 Gyr from z~6 to z~4 (by ~0.7 mag from M*=-20.24+/-0.19 to M*=-20.98+/-0.10). The observed increase in the characteristic luminosity over this range is almost identical to that expected for the halo mass function -- suggesting that the observed evolution is likely due to the hierarchical coalescence and merging of galaxies. The evolution in phi* is not significant. The UV luminosity density at z~6 is modestly lower (0.45+/-0.09 times) than that at z~4 (integrated to -17.5 AB mag) though a larger change is seen in the dust-corrected star-formation rate density. We thoroughly examine published LF results and assess the reasons for their wide dispersion. We argue that the results reported here are the most robust available. The extremely steep faint-end slopes alpha found here suggest that lower luminosity galaxies play a significant role in reionizing the universe. Finally, we consider recent search results for galaxies at z~7-8 and use them to extend our estimates of the evolution in M* from z~7-8 to z~4.
description: 33 pages, 18 figures, accepted for publication in the Astrophysical Journal, updated to match version in press
Information-Based Asset Pricing
Creators: name: Brody, Dorje C.
name: Hughston, Lane P.
name: Macrina, Andrea
Publisher: name: arXiv
Year: 2007
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: A new framework for asset price dynamics is introduced in which the concept of noisy information about future cash flows is used to derive the price processes. In this framework an asset is defined by its cash-flow structure. Each cash flow is modelled by a random variable that can be expressed as a function of a collection of independent random variables called market factors. With each such "X-factor" we associate a market information process, the values of which are accessible to market agents. Each information process is a sum of two terms; one contains true information about the value of the market factor; the other represents "noise". The noise term is modelled by an independent Brownian bridge. The market filtration is assumed to be that generated by the aggregate of the independent information processes. The price of an asset is given by the expectation of the discounted cash flows in the risk-neutral measure, conditional on the information provided by the market filtration. When the cash flows are the dividend payments associated with equities, an explicit model is obtained for the share-price, and the prices of options on dividend-paying assets are derived. Remarkably, the resulting formula for the price of a European call option is of the Black-Scholes-Merton type. The information-based framework also generates a natural explanation for the origin of stochastic volatility.
description: 32 pages. No figure
Lysmata intermedia Kingsley 1878
Creators: name: Pachelle, Paulo P. G.
name: Anker, Arthur
name: Mendes, Cecili B.
name: Bezerra, Luis E. A.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Hippolytidae
Lysmata
Lysmata intermedia

description: Lysmata intermedia (Kingsley, 1878)
(Figure 9)
 Hippolysmata intermedia Kingsley 1878: 90.
 Material examined. Brazil, Ceará: 1 hermaphrodite, LABOMAR-UFC 443, Fortaleza, Praia de Meireles, coll. J. Fausto Filho, 14.viii.1969; 1 hermaphrodite, MZUSP 33034, Paracuru, Praia da Pedra Rachada, rocky intertidal, under rocks, coll. A. Anker & P.P.G. Pachelle, 04.vii.2012 [fcn 12-163]; 1 ov. hermaphrodite, LIMCE-UFC 841, Paracuru, Praia da Pedra Rachada, rocky intertidal, under large rock, coll. P.P.G. Pachelle & C.B. Mendes, 31.i.2014 [fcn PP 14-014].
 Distribution. Western Atlantic: USA (Florida Keys), Caribbean Sea (e.g., Trinidad & Tobago, Curaçao), Brazil (Ceará, Paraíba, Pernambuco, Sergipe, Bahia, Espírito Santo, Rio de Janeiro) (Christoffersen 1998; Coelho et al. 2006; Riul et al. 2008; Almeida et al. 2012; Barros-Alves et al. 2015; present study).
 Remarks. Lysmata intermedia is extremely difficult to distinguish, at least based on morphological grounds only, from the recently described L. jundalini Rhyne, Calado & Dos Santos, 2012, from the Caribbean Sea (Rhyne et al. 2012). However, the two species can be easily separated from each other by their diagnostic colour patterns, the most important features being the much wider longitudinal bands on the abdomen and the presence of a deepblue patch on the thoracic sternum, between the anterior walking legs, in L. jundalini. The colour pattern of the Ceará specimens of L. intermedia (Fig. 9) matches perfectly that of the Caribbean specimens in Rhyne et al. (2012: fig. 5).
description: Published as part of Pachelle, Paulo P. G., Anker, Arthur, Mendes, Cecili B. & Bezerra, Luis E. A., 2016, Decapod crustaceans from the state of Ceará, northeastern Brazil: an updated checklist of marine and estuarine species, with 23 new records, pp. 1-63 in Zootaxa 4131 (1) on page 16, DOI: 10.11646/zootaxa.4131.1.1, http://zenodo.org/record/400297
Strong gravitational lens image of the M87 black hole with a simple accreting matter model
Creators: name: Boero, Ezequiel F.
name: Moreschi, Osvaldo M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study simulated images generated from an accretion disk surrounding the supermassive black hole hosted in the nearby galaxy M87. We approach the problem employing very simple accreting models inspired from magnetohydrodynamical simulations and introducing a new recipe for dealing with the combined integration of the geodesic and geodesic deviation equations in Kerr spacetime, which allows for a convenient and efficient way to manage the system of equations. The geometry of the basic emission model is given by a two temperature thin disk in the equatorial plane of the black hole supplemented by an asymmetric bar structure. We show that this configuration permits to generate the most salient features appearing in the EHT Collaboration images of M87 with impressive fidelity.
description: 18 pages,16 figures
Breaking of the gauge symmetry in lattice gauge theories
Creators: name: Bonati, Claudio
name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study perturbations that break gauge symmetries in lattice gauge theories. As a paradigmatic model, we consider the three-dimensional Abelian-Higgs (AH) model with an N-component scalar field and a noncompact gauge field, which is invariant under U(1) gauge and SU(N) transformations. We consider gauge-symmetry breaking perturbations that are quadratic in the gauge field, such as a photon mass term, and determine their effect on the critical behavior of the gauge-invariant model, focusing mainly on the continuous transitions associated with the charged fixed point of the AH field theory. We discuss their relevance and compute the (gauge-dependent) exponents that parametrize the departure from the critical behavior (continuum limit) of the gauge-invariant model. We also address the critical behavior of lattice AH models with broken gauge symmetry, showing an effective enlargement of the global symmetry, from U(N) to O(2N), which reflects a peculiar cyclic renormalization-group flow in the space of the lattice AH parameters and of the photon mass.
description: 8 pages, few changes, to be published in Phys Rev Lett
NGTS 15b, 16b, 17b and 18b: four hot Jupiters from the Next Generation Transit Survey
Creators: name: Tilbrook, Rosanna H.
name: Burleigh, Matthew R.
name: Costes, Jean C.
name: Gill, Samuel
name: Nielsen, Louise D.
name: Vines, José I.
name: Queloz, Didier
name: Hodgkin, Simon T.
name: Worters, Hannah L.
name: Goad, Michael R.
name: Acton, Jack S.
name: Henderson, Beth A.
name: Armstrong, David J.
name: Anderson, David R.
name: Bayliss, Daniel
name: Bouchy, François
name: Briegal, Joshua T.
name: Bryant, Edward M.
name: Casewell, Sarah L.
name: Chaushev, Alexander
name: Cooke, Benjamin F.
name: Eigmüller, Philipp
name: Gillen, Edward
name: Günther, Maximilian N.
name: Hogan, Aleisha
name: Jenkins, James S.
name: Lendl, Monika
name: McCormac, James
name: Moyano, Maximiliano
name: Raynard, Liam
name: Smith, Alexis M. S.
name: Udry, Stéphane
name: Watson, Christopher A.
name: West, Richard G.
name: Wheatley, Peter J.
name: Breytenbach, Hannes
name: Sefako, Ramotholo R.
name: Thomas, Jessymol K.
name: Alves, Douglas R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of four new hot Jupiters with the Next Generation Transit Survey (NGTS). NGTS-15b, NGTS-16b, NGTS-17b, and NGTS-18b are short-period ($P<5$d) planets orbiting G-type main sequence stars, with radii and masses between $1.10-1.30$ $R_J$ and $0.41-0.76$ $M_J$. By considering the host star luminosities and the planets' small orbital separations ($0.039-0.052$ AU), we find that all four hot Jupiters are highly irradiated and therefore occupy a region of parameter space in which planetary inflation mechanisms become effective. Comparison with statistical studies and a consideration of the planets' high incident fluxes reveals that NGTS-16b, NGTS-17b, and NGTS-18b are indeed likely inflated, although some disparities arise upon analysis with current Bayesian inflationary models. However, the underlying relationships which govern radius inflation remain poorly understood. We postulate that the inclusion of additional hyperparameters to describe latent factors such as heavy element fraction, as well as the addition of an updated catalogue of hot Jupiters, would refine inflationary models, thus furthering our understanding of the physical processes which give rise to inflated planets.
description: Accepted for publication in MNRAS
Η εκπαιδευτική πολιτική της κυβέρνησης του Κ. Σημίτη 1996-2000
Creators: name: Παπασταμόπουλος, Ξενοφών Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Εκπαιδευτική πολιτική
Μεταρρύθμιση
ΠΑΣΟΚ
Αρσένης
Educational policy
Reform
PASOK
Arsenis

description: Σκοπός της διατριβής ήταν να αναλύσει και να κατανοήσει την εκπαιδευτική πολιτική στην Ελλάδα, στα πλαίσια των ευρύτερων κοινωνικοπολιτικών αλλαγών που συντελέστηκαν στη δεκαετία του ΄90. Στο θεωρητικό μέρος παρουσιάστηκαν και αναλύθηκαν οι κυριότερες παράμετροι, που επηρεάζουν και διαμορφώνουν την εκπαιδευτική πολιτική. Στη συνέχεια παρουσιάστηκε η ιστορική διαδρομή του ΠΑΣΟΚ, από την ίδρυσή του μέχρι το 2001 και αναλύθηκε όχι μόνο η εκπαιδευτική πολιτική αλλά και οι νέες μορφές εκπαιδευτικής διακυβέρνησης, που προτάθηκαν, υιοθετήθηκαν και εφαρμόστηκαν στη δεκαετία του ΄90 και συγκεκριμένα στο διάστημα 1996-2001, από τις κυβερνήσεις του Κ. Σημίτη. Ειδικότερα παρουσιάστηκαν αναλυτικά οι νομοθετικές παρεμβάσεις του Υπουργού Παιδείας Γ. Αρσένη, που πέρασαν στην ιστορία ως Μεταρρύθμιση Αρσένη, η κριτική που άσκησαν τα κόμματα της αντιπολίτευσης, τόσο σε επίπεδο Επιτροπής Μορφωτικών Υποθέσεων της Ελληνικής Βουλής όσο και σε γενικότερο πολιτικό επίπεδο, η κριτική των συνδικαλιστικών φορέων των εκπαιδευτικών και τα επιχειρήματα της κυβέρνησης και του Γ. Αρσένη. Αναφερθήκαμε επίσης στις νομοθετικές παρεμβάσεις του διαδόχου του Γ. Αρσένη στο Υπουργείο Παιδείας Π. Ευθυμίου, με τις οποίες ακυρώθηκαν βασικά σημεία της Μεταρρύθμισης Αρσένη.
description: The aim of the present thesis was to analyze and understand the educational policy in Greece, within the framework of the sweeping socioeconomic changes that took place during the ‘90’s. In the theoretical part of the thesis the main parameters , that affect and shape educational policy, were presented. The historical course of PASOK, from its formation to 2001, was presented in succession, and the educational policy along with the new forms of educational governing - proposed, adopted and implied by the government of K. Simitis during the ‘90’s and specifically between 1996 and 2001 – were analyzed. The legislative interventions of the Minister of Education G. Arsenis, Known as the Arsenis’ Reform were analytically presented, along with the criticism exerted by the opposition parties, during the proceedings of the Cultural Affairs Committee but in the general political level as well. The criticism exerted by the unions of teachers and the arguments of the government and G. Arsenis’ were also analytically presented. The legislative interventions of P. Efthimiou, G. Arsenis’ successor in the Ministry of Education, by which basic measures of Arsenis’ Reform were cancelled, were also mentioned.
No-Bang Quantum State of the Cosmos
Creators: name: Page, Don N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A quantum state of the entire cosmos (universe or multiverse) is proposed which is the equal mixture of the Giddings-Marolf states that are asymptotically single de Sitter spacetimes in both past and future and are regular on the throat or neck of minimal three-volume. That is, states are excluded that have a big bang or big crunch or which split into multiple asymptotic de Sitter spacetimes. (For simplicity, transitions between different values of the cosmological constant are assumed not to occur, though different positive values are allowed.) The entropy of this mixed state appears to be of the order of the three-fourths power of the Bekenstein-Hawking A/4 entropy of de Sitter spacetime. Most of the component pure states do not have rapid inflation, but when an inflaton is present and the states are weighted by the volume at the end of inflation, a much smaller number of states may dominate and give a large amount of inflation and hence may agree with observations.
description: 18 pages, LaTeX, updated with a few new qualifications and references
Factorized world-sheet scattering in near-flat AdS_5 x S^5
Creators: name: Puletti, Valentina Giangreco Marotta
name: Klose, Thomas
name: Sax, Olof Ohlsson
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show the factorization of the three-particle world-sheet S-matrix of AdS_5 x S^5 superstring theory in the near-flat-space limit at one loop order. This is done by computing various scattering amplitudes from Feynman diagrams in the world-sheet theory. The knowledge of certain highest weight amplitudes allows us to fix all the freedom in the three-particle S-matrix, which we argue to be constrained up to four scalar functions due to the symmetries of the model. We demonstrate that these amplitudes are given by corresponding products of the known two-particle S-matrix elements, from which it follows that the scattering of any three world-sheet excitations factorizes. This provides an explicit and direct check of the quantum integrability of string theory in near-flat AdS_5 x S^5 as it renders evidence for the existence of higher conserved charges. By computing further amplitudes we also obtain an indirect confirmation of the supersymmetries of the near-flat-space model.
description: 33 pages, 5 figures, v2: reference added
Strange dibaryon resonance in the anti-KNN--piYN system
Creators: name: Ikeda, Y.
name: Sato, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Three-body resonances in the \bar{K}NN system have been studied within a framework of the \bar{K}NN-πYN coupled hannel Faddeev equation. By solving the three-body equation the energy dependence of the resonant \bar{K}N amplitude is fully taken into account. The S-matrix pole has been investigated from the eigenvalue of the kernel with the analytic continuation of the scattering amplitude on the unphysical Riemann sheet. The \barKN interaction is constructed from the leading order term of the chiral Lagrangian using relativistic kinematics. The Λ(1405) resonance is dynamically generated in this model, where the \bar{K}N interaction parameters are fitted to the data of scattering length. As a result we find a three-body resonance of the strange dibaryon system with binding energy, B~79 MeV, and width, Γ~74 MeV. The energy of the three-body resonance is found to be sensitive to the model of the I=0 \barKN interaction.
description: 22 pages, 10 figures; added extended KNN-piYN calculation, Appendix
Social action in response to an external threat
Creators: name: Dean, Ava May
Publisher: name: University of British Columbia
Year: 2010

description: The problem for study was whether certain selected factors influenced social workers' responses to nuclear disarmament. Using a random sampling of B.C.A.S.W. members throughout the province of British Columbia, a semi-structured mail questionnaire solicited responses to a number of questions aimed at discovering the respondents' perceptions of the seriousness of the nuclear threat, the sense of personal or professional responsibility for action against that threat, belief in their own ability, and the B.C.A.S.W.'s ability to act to counter the threat, and their sense of personal efficacy. Most respondents saw nuclear disarmament as a social work issue that was important in comparison with other issues, and for which social workers had something unique to offer. The majority also saw global social issues to be as important as local ones and money spent on the arms race as taking money away from social programs. However, respondents saw very little adverse effects on their clients, their families, and themselves. There were some relationships individually between respondents' nuclear disarmament activity and the selected factors. There were no strong relationships, however, between single items of measure and respondents' actual nuclear disarmament activity, and there were moderate relationships between measures of B.C.A.S.W. ability to act and respondents' activity. As well, there were low relationships between several items of personal and professional responsibility and respondents' nuclear disarmament activity. However, action may result from a combinations of factors, rather than one factor in isolation, and multiple regression techniques could show stronger relationships. Respondents were inconsistent in their answers. This means that, in looking at social workers' attitudes toward the threat of nuclear war, research may have to deal with the issue on several levels: the political, the personal, the professional, and the social.
Combating fake news with the use of collective intelligence in hybrid system
Creators: name: Rafał Olszowski
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Fighting fake news (FN) is an issue that has become more important than ever since the outbreak of the coronavirus pandemic. Spreading of fake news is now viewed as one of the greatest threats to freedom of expression, independent debate, and fair journalism, weakening public trust in governments and sparking social unrest. I propose to consider a new generation of platforms combating fake news, with a new element: the collective intelligence module. Collective intelligence (CI) is understood as a form of distributed ability, which arises from the collaboration and competition between many individuals: both humans and AI agents. The idea of CI entails the utilization of interactions to create solutions, concepts, and ideas; selecting between the created alternatives, refining, implementation, evaluation, and gaining feedback
A metrological characterization of the SPEED test-bed PIAACMC components
Creators: name: Barjot, K.
name: Martinez, P.
name: Beaulieu, M.
name: Gouvret, C.
name: Marcotto, A.
name: Guyon, O.
name: Belhadi, M.
name: Caillat, A.
name: Behaghel, T.
name: Duigou, J. M. Le
name: Dohlen, K.
name: Vigan, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The segmented pupil experiment for exoplanet detection (SPEED) facility aims to improve knowledge and insight into various areas required for gearing up high-contrast imaging instruments adapted to the unprecedented high angular resolution and complexity of the forthcoming extremely large telescopes (ELTs). SPEED combines an ELT simulator, cophasing optics, wavefront control and shaping with a multi-deformable mirror (DM) system, and optimized small inner-working angle (IWA) coronagraphy. The fundamental objective of the SPEED setup is to demonstrate deep contrast into a dark hole optimized for small field of view and very small IWA, adapted to the hunt of exoplanets in the habitable zone around late-type stars. SPEED is designed to implement an optimized small IWA coronagraph: the phase-induced amplitude apodization complex mask coronagraph (PIAACMC). The PIAACMC consists in a multi-zone phase-shifting focal plane mask (FPM) and two apodization mirrors (PIAA-M1 and PIAA-M2), with strong manufacturing specifications. Recently, a first-generation prototype of a PIAACMC optimized for the SPEED facility has been designed and manufactured. The manufacturing components exhibit high optical quality that meets specifications. In this paper, we present how these components have been characterized by a metrological instrument, an interferential microscope, and then we show what is yielded from this characterization for the FPM and the mirrors. Eventually, we discuss the results and the perspectives of the implementation of the PIAACMC components on the SPEED setup.
COREnext 5th Newsletter
Creators: name: AUSTRALO
Publisher: name: Zenodo
Year: 2024

description: Welcome to the Autumn Period of the COREnext Journey!

5th edition of COREnext Newsletter brings exciting updates, including researchon modular trusted environments, a white paper on digital trust, and insights intonext-gen RF and SOI technology in "Disruptive TRX Design for D-band."

Get to know Patrick Pype, leader of WP7, and catch highlights from COREnext’srecent events, including European Microwave Week and Nokia Bell Labs. Wealso feature COREnext’s commitment to the UN SDGs and invite you to testyour cybersecurity knowledge in our interactive quiz.

Dive in to see how COREnext is advancing resilient, sustainable technology!
Filling the holes: Evolving excised binary black hole initial data with puncture techniques
Creators: name: Etienne, Zachariah B.
name: Faber, Joshua A.
name: Liu, Yuk Tung
name: Shapiro, Stuart L.
name: Baumgarte, Thomas W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We follow the inspiral and merger of equal-mass black holes (BHs) by the moving puncture technique and demonstrate that both the exterior solution and the asymptotic gravitational waveforms are unchanged when the initial interior solution is replaced by constraint-violating ``junk'' initial data. We apply this result to evolve conformal thin-sandwich (CTS) binary BH initial data by filling their excised interiors with arbitrary, but smooth, initial data and evolving with standard puncture gauge choices. The waveforms generated for both puncture and filled-CTS initial data are remarkably similar, and there are only minor differences between irrotational and corotational CTS BH binaries. Even the interior solutions appear to evolve to the same constraint-satisfying solution at late times, independent of the initial data.
description: 5 pages, 5 figures, accepted by PRD Rapid Communications, RevTeX
title: DAS KARRIEREENDE VON TÄNZERINNEN UND TÄNZERN ALS KRITISCHES LEBENSEREIGNIS UND DESSEN BEWÄLTIGUNG FALLSTUDIEN AUS ENTWICKLUNGSTHEORETISCHER UND KÖRPERSOZIOLOGISCHER PERSPEKTIVE
Creators: name: Dreher Mansur, Sandra
Publisher: name: Universität Tübingen
Year: 2025
Subjects: subject: Tänzer:innen
subject: Ballet
subject: Karriereende
subject: Bio Mapping
subject: Sociology of the body
subject: Ballett
subject: Bio Mapping
subject: critical life event
subject: Körpersoziologie
subject: kritisches Lebensereignis
subject: end of career
subject: sport
subject: Sport
subject: Dancers

description: Dieses Dissertationsprojekt verfolgt das Ziel, die Beendigung der Karriere von professionellen Tänzern als kritisches Lebensereignis zu analysieren. Die Tanzwelt ist ein eigener Kosmos. Viele Tänzer betrach-ten ihren Beruf nicht nur als ‚Beruf‘, sondern als Berufung, die absolute Hingabe und eine sehr starke Belastung in physischer und psychischer Hinsicht, aber auch im sozialen Umgang abverlangt. Die Been-digung einer Karriere ist im Alter von etwa 30 bis 40 Jahren unumgänglich und diese Situation ist bei den Tänzern als besonderes Ereignis, als kritisches Lebensereignis einzustufen. Beim Tanzen ist der Körper das maßgebliche Arbeitsinstrument und deshalb muss dabei auch der Aspekt der Körperlichkeit berück-sichtigt werden, um eine ganzheitliche Betrachtung dieses Phänomens zu gewährleisten. Weil der Tanz von einem Körperwissen ausgeht, das sich weder sportwissenschaftlich noch sportpädagogisch-praktisch ‚disziplinieren‘ lässt, liegt dieser Untersuchung die These zugrunde, dass das im Körper liegende Wissen durch Bewegungen aktiviert werden kann und neue, un- oder außergewöhnliche Erfahrungen eröffnet. Als Leitlinie dient deshalb folgende Frage für diese Studie: Wie gelingt es Tänzern, ihr Karriereende zu bewältigen und welche Rolle spielt hierbei die ihre durch die Tanzwelt geprägte Körperlichkeit? Mein Vorgehen stützt sich methodologisch auf leitfadengestützte Interviews. Diesen Ansatz ergänze ich um das biografische Mapping, weil darin intensiver auf die Subjektivität und die individuelle Entwicklung von Persönlichkeitsdimensionen sowie der Ressourcen und Fähigkeiten der Probanden für die Problem-bewältigung eingegangen werden kann. Dieses Vorgehen umfasst auch die Analyse der Körpersprache (‚Body Talk aloud‘) während des Interviews, die für Tänzer ein zentrales nonverbales Kommunikations-mittel darstellt. Für die Untersuchung wurden sieben ehemalige professionelle Tänzer bzw. Tänzerinnen als Testpersonen ausgewählt. Auf entwicklungspsychologischer Basis konnte die Ausgangshypothese bestätigt werden, dass die Been-digung der Karriere für professionelle Tänzer bzw. Tänzerinnen ein kritisches Lebensereignis darstellen kann. Dieses Ereignis wird von Tänzer zu Tänzer jedoch sehr unterschiedlich empfunden, In Bezug auf das Körperempfinden (Habitus nach Bourdieu) zeigt sich in der Analyse, dass das Karriereende einen nachhaltigen Einfluss auf die weitere Entwicklung von Tänzern und Tänzerinnen bewirken kann, da das Körperempfinden sowohl interindividuelle als auch berufliche und familiäre Faktoren verändern kann.
Cell Viability and Cytotoxic Testing of Seventeen Asian Plant Extractstoward MARC-145 Cells by MTT Assay
Creators: name: Kraijak Kaewprom
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: Plant extracts, MTT assay andcytotoxicity

description: วารสารเกษตรพระวรุณ, 13, 1, 40-48
Impact of NICER's Radius Measurement of PSR J0740+6620 on Nuclear Symmetry Energy at Suprasaturation Densities
Creators: name: Zhang, Nai-Bo
name: Li, Bao-An
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: By directly inverting several neutron star observables in the three-dimensional parameter space for the Equation of State of super-dense neutron-rich nuclear matter, we show that the lower radius limit for PSR J0740+6620 of mass $2.08\pm 0.07~M_{\odot}$ from Neutron Star Interior Composition Explorer (NICER)'s very recent observation sets a much tighter lower boundary than previously known for nuclear symmetry energy in the density range of $(1.0\sim 3.0)$ times the saturation density $ρ_0$ of nuclear matter. The super-soft symmetry energy leading to the formation of proton polarons in this density region of neutron stars is clearly disfavoured by the first radius measurement for the most massive neutron star observed reliably so far.
description: New calculations/discussions/references added. The Astrophysical Journal in press
Effects of Supplementation of Exogenous Fibrolytic Enzyme Enhanceson Gas Production,Digestibility and Rumen Fermentation of Rice Straw by UsingIn vitroGas ProductionTechnique
Creators: name: Chalong Wachirapakorn
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: Exogenous fibrolytic enzyme
Rice strawand In vitrogas production technique

description: วารสารเกษตรพระวรุณ, 13, 1, 49-60
SU(2) and SU(4) Kondo effect in double quantum dots
Creators: name: Mravlje, Jernej
name: Ramsak, Anton
name: Rejec, Tomaz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate serial double quantum dot systems with on-site and inter-site interaction by means of Schönhammer-Gunnarsson projection-operator method. The ground state is established by the competition between extended Kondo phases and localized singlet phases in spi$ degrees of freedom. We present and discuss different phases, as discerned by characteristic correlation functions. We discuss also how different phases would be seen in linear transport measurements.
description: 5 pages, 2 figures, presented on "XI Training Course in the Physics of Strongly Correlated Systems", Vietri sul Mare, Salerno, Italy
Approximately controllable finite-dimensional bilinear systems are controllable
Creators: name: Cannarsa, Daniele
name: Sigalotti, Mario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93B03, 53C12, 37C86

description: We show that a bilinear control system is approximately controllable if and only if it is controllable in $\mathbb{R}^{n}\setminus\{0\}$. We approach this problem by looking at the foliation made by the orbits of the system, and by showing that there does not exist a codimension-one foliation in $\mathbb{R}^{n}\setminus\{0\}$ with dense leaves that are everywhere transversal to the radial direction. The proposed geometric approach allows to extend the results to homogeneous systems that are angularly controllable.
description: 9 pages, 2 figures
สภาวะที่เหมาะสมต่อการผลิตแคโรทีนอยด์โดยRhodotorularubraร่วมกับสารเสริมชีวนะจากเชื้อLactobacillus acidophilusในฝุ่นข้าวโพดอาหารสัตว์
Creators: name: ณัฐพร จันทร์ฉาย
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: แคโรทีนอยด์,ฝุ่นข้าวโพด
โปรไบโอติก
Rhodotorula rubra
Lactobacillus acidophilus

description: วารสารเกษตรพระวรุณ, 13, 1, 61-69
Τεχνολογικά χαρακτηριστικά και εργαλεία της διαδικτυακής παρουσίας των Μέσων Μαζικής Επικοινωνίας
Creators: name: Αντωνόπουλος, Νίκος Θ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ευχρηστία
Διαδικτυακοί τόποι
Αξιολόγηση
Αλληλεπίδραση Ανθρώπου Υπολογιστή
Usability
Website
Evaluation
Human Computer Interaction

description: Η παρούσα διατριβή πραγματεύεται τα τεχνολογικά χαρακτηριστικά και εργαλεία της διαδικτυακής παρουσίας των μέσων μαζικής επικοινωνίας. Ο επιστημονικός τομέας στον οποίο εντάσσεται το συγκεκριμένο πόνημα, είναι αυτός της αλληλεπίδρασης ανθρώπου-υπολογιστή. Αντικείμενο μελέτης αποτελεί ο σχεδιασμός, η ευχρηστία, η αποδοτικότητα, η αξιολόγηση και οι καλές πρακτικές που ένας διαδικτυακός τόπος οφείλει να διαθέτει ώστε να εξυπηρετεί τις ανάγκες των χρηστών του. Οι διαδικτυακοί τόποι και γενικά οι ψηφιακές εφαρμογές εμπεριέχουν πληροφορίες που στόχος τους είναι να τα μοιραστούν με το κοινό στο οποίο απευθύνονται. Τα τεχνολογικά χαρακτηριστικά, οι υπηρεσίες και οι δομές που θα επιλέξουν για να χρησιμοποιήσουν οι επισκέπτες απαιτούν συνεχή έρευνα και αξιολόγηση από τους ειδικούς, ώστε να ικανοποιούν τις ανάγκες των χρηστών και στο μέλλον τις επιλογές του κάθε επισκέπτη. Στην παρούσα εργασία η μελέτη εστιάστηκε στην παρουσία των μέσων μαζικής επικοινωνίας στο διαδίκτυο. Μέσω μιας διευρυμένης και συστηματικής έρευνας η μελέτη κατέληξε σε μια πρόταση, η οποία αφορά στη δημιουργία και χρήση μιας αποδοτικής ψηφιακής παρουσίας για όλα τα ψηφιακά μέσα ανάλογα με το είδος του μέσου (διαδικτυακή ενημερωτική πύλη, εφημερίδα, τηλεοπτικός και ραδιοφωνικός σταθμός ή ένας συνδυασμός των παραπάνω). Η συνεχής αξιολόγηση και η πρωτοτυπία των συστημάτων που σχεδιάζονται και υλοποιούνται αποτελεί έναν ατέρμονο κύκλο που ανατροφοδοτεί αδιάλειπτα την έρευνα. Μελλοντικές προεκτάσεις έρευνας αποτελεί η πρακτική πλέον μελέτη και κατασκευή μιας ψηφιακής εφαρμογής βασισμένη στην υπάρχουσα μελέτη και η διερεύνηση των αποτελεσμάτων στις προτιμήσεις των χρηστών.
description: The aim of the content of the websites and digital applications in general is to be shared to the relevant users. The technological features, the services and the structures that the visitors choose to use, require a continuous research and evaluation by scientific researchers, in order to meet the needs and the future choices of the guests. In the present thesis, the study focused on the presence of the web media. The study that based on an expanded and systematic research concludes on a proposition, which is the creation and use of an efficient digital presence of all digital sources depending on the kind of mean (portal, newspaper, television and radio station, or a combination of the above). The continuous assessment and the innovation of the systems that are designed and implemented, constitutes a never-ending cycle that feeds back the research continuously. Future extensions of the present research are the practical design and the creation of a digital application based on the existing study and research of the effects of users preferences.
Thermal motion of skyrmion arrays in granular films
Creators: name: Zhou, Yifan
name: Mansell, Rhodri
name: Ala-Nissila, Tapio
name: van Dijken, Sebastiaan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic skyrmions are topologically-distinct swirls of magnetic moments which display particle-like behaviour, including the ability to undergo thermally-driven diffusion. In this paper we study the thermally activated motion of arrays of skyrmions using temperature dependent micromagnetic simulations where the skyrmions form spontaneously. In particular, we study the interaction of skyrmions with grain boundaries, which are a typical feature of sputtered ultrathin films used in experimental devices. We find the interactions lead to two distinct regimes. For longer lag times the grains lead to a reduction in the diffusion coefficient, which is strongest for grain sizes similar to the skyrmion diameter. At shorter lag times the presence of grains enhances the effective diffusion coefficient due to the gyrotropic motion of the skyrmions induced by their interactions with grain boundaries. For grain sizes significantly larger than the skyrmion diameter clustering of the skyrmions occurs in grains with lower magnetic anisotropy.
description: 7 pages, 5 figures
A quantum topological phase transition at the microscopic level
Creators: name: Castelnovo, C.
name: Chamon, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a quantum phase transition between a phase which is topologically ordered and one which is not. We focus on a spin model, an extension of the toric code, for which we obtain the exact ground state for all values of the coupling constant that takes the system across the phase transition. We compute the entanglement and the topological entropy of the system as a function of this coupling constant, and show that the topological entropy remains constant all the way up to the critical point, and jumps to zero beyond it. Despite the jump in the topological entropy, the transition is second order as detected via any local observable.
description: (13 pages, 4 figures) v2: updated references and acknowledgments; v3: final update (references) after publication
Present and Future of Reconfigurable Intelligent Surface-Empowered Communications
Creators: name: Basar, Ertugrul
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Signal processing and communication communities have witnessed the rise of many exciting communication technologies in recent years. Notable examples include alternative waveforms, massive multiple-input multiple-output (MIMO) signaling, non-orthogonal multiple access (NOMA), joint communications and sensing, sparse vector coding, index modulation, and so on. It is inevitable that 6G wireless networks will require a rethinking of wireless communication systems and technologies, particularly at the physical layer (PHY), considering the fact that the cellular industry reached another important milestone with the development of 5G wireless networks with diverse applications. Within this perspective, this article aims to shed light on the rising concept of reconfigurable intelligent surface (RIS)-empowered communications towards 6G wireless networks. Software-defined RISs can manipulate their impinging signals in an effective way to boost certain key performance indicators. We discuss the recent developments in the field and put forward promising candidates for future research and development. Specifically, we put our emphasis on active, transmitter-type, transmissive-reflective, and standalone RISs, by discussing their advantages and disadvantages compared to reflective RIS designs. Finally, we also envision an ultimate RIS architecture, which is able to adjust its operation modes dynamically, and introduce the new concept of PHY slicing over RISs towards 6G wireless networks.
description: IEEE Signal Processing Magazine (to appear)
Τα τέμπλα των εκκλησιών της Θεσσαλονίκης και της περιφέρειάς της από τον 18ο έως τις αρχές του 20ου αιώνα: συμβολή στη μελέτη της καλλιτεχνικής έκφρασης και της εξέλιξής της στα νεότερα τέμπλα
Creators: name: Κούσουλα, Αιακτερίνη Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Τέμπλο
Μεταβυζαντινά
Ξυλόγλυπτα
Γραπτά
Iconostasis
Post byzantine
Woodcarve
Orthodox church

description: Η παρούσα μελέτη αφορά στην ανάγνωση της τέχνης του 18ου και 19ου αιώνα, που κοσμεί τα τέμπλα βυζαντινών και μεταβυζαντινών ναών της Θεσσαλονίκης και του ομώνυμου νομού καθώς και στην τεκμηρίωση του κατά κανόνα άγνωστου στην έρευνα σημαντικού αυτού υλικού. Το τέμπλο, το οποίο συνιστά τμήμα της λειτουργικής επίπλωσης του ορθόδοξου χριστιανικού ναού, κατά τα μεταβυζαντινά χρόνια συνιστά προοδευτικά καθαυτό περιοχή καλλιτεχνικής έκφρασης. Τα τέμπλα που εξετάζονται χωρίζονται σε τρεις κατηγορίες με βάση το διάκοσμό τους (ξυλόγλυπτα, μεικτά και γραπτά). Οι καλλιτέχνες των τέμπλων, ζωγράφοι και ξυλογλύπτες, αντλούν από την παράδοση της ορθόδοξης εικονογραφίας και εμπλουτίζουν το θεματολόγιό τους με θέματα που ο συμβολισμός τους αναγνωρίζεται εύκολα και έχουν έμμεσο σκοπό να διδάξουν. Η μελέτη της τέχνης στα μεταβυζαντινά τέμπλα, των δύο τελευταίων αιώνων της τουρκοκρατίας, αποτελεί μελέτη πάνω στην καλλιτεχνική τάση που ονομάζουμε «νεοελληνικό μπαρόκ» με ιδεολογικό και ιστορικό της υπόβαθρο το κίνημα του Ευρωπαϊκού Διαφωτισμού.
description: The present study concerns in the reading of art of the 18th and 19th century, that adorns the iconostasis of Byzantine and post byzantine temples of Thessalonica and homonym prefecture as well as in the documentation of important material unknown to the research. The iconostasis, which is founded department of functional furnishing of orthodoxe christian temple, at the post byzantine years is founded progressively as region of artistic expression. The iconostasis that are examined are separated in three categories with base the decor (carved in wood, mixed and written). The artists of post byzantine iconostastis, painters and woodcarvers, draw from the delivery of orthodoxe iconography and they enrich their thematology with subjects that the symbolism is recognized to them easily and they have indirect aim to teach. The study of art in the post byzantine iconostasis during the two last centuries of Ottoman domination, constitutes study on the artistic tendency that we name “the modern Greek baroque” with ideological and historical background the movement of European Enlightenment.
Cosmic Ray production of Beryllium and Boron at high redshift
Creators: name: Rollinde, Emmanuel
name: Maurin, David
name: Vangioni, Elisabeth
name: Olive, Keith A.
name: Inoue, Susumu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recently, new observations of Li6 in Pop II stars of the galactic halo have shown a surprisingly high abundance of this isotope, about a thousand times higher than its predicted primordial value. In previous papers, a cosmological model for the cosmic ray-induced production of this isotope in the IGM has been developed to explain the observed abundance at low metallicity. In this paper, given this constraint on the Li6, we calculate the non-thermal evolution with redshift of D, Be, and B in the IGM. In addition to cosmological cosmic ray interactions in the IGM, we include additional processes driven by SN explosions: neutrino spallation and a low energy component in the structures ejected by outflows to the IGM. We take into account CNO CRs impinging on the intergalactic gas. Although subdominant in the galactic disk, this process is shown to produce the bulk of Be and B in the IGM, due to the differential metal enrichment between structures (where CRs originate) and the IGM. We also consider the resulting extragalactic gamma-ray background which we find to be well below existing data. The computation is performed in the framework of hierarchical structure formation considering several star formation histories including Pop III stars. We find that D production is negligible and that a potentially detectable Be and B plateau is produced by these processes at the time of the formation of the Galaxy (z ~ 3).
description: 9 pages, 7 figures
Nuclear matter in the crust of neutron stars
Creators: name: Gögelein, P.
name: Müther, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The properties of inhomogeneous nuclear matter are investigated considering the self-consistent Skyrme Hartree-Fock approach with inclusion of pairing correlations. For a comparison we also consider a relativistic mean field approach. The inhomogeneous infinite matter is described in terms of cubic Wigner-Seitz cells, which leads to a smooth transition to the limit of homogeneous nuclear matter. The possible existence of various structures in the so-called pasta phase is investigated within this self-consistent approach and a comparison is made to results obtained within the Thomas-Fermi approximation. Results for the proton abundances and the pairing properties are discussed for densities for which clustering phenomena are obtained.
description: 23 pages, 8 figures
Non-Negativity of BMN Two-Point Functions With Three String Modes
Creators: name: Du, Bao-ning
name: Huang, Min-xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, we proposed a novel entry of the pp-wave holographic dictionary, which equated the Berenstein-Maldacena-Nastase (BMN) two-point functions in free $\mathcal{N}=4$ super-Yang-Mills theory with the norm squares of the quantum unitary transition amplitudes between the corresponding tensionless strings in the infinite curvature limit, for the cases with no more than three string modes in different transverse directions. A seemingly highly non-trivial conjectural consequence, particularly in the case of three string modes, is the non-negativity of the BMN two-point functions at any higher genus for any mode numbers. In this paper, we further perform the detailed calculations of the BMN two-point functions with three string modes at genus two, and explicitly verify that they are always non-negative through mostly extensive numerical tests.
description: 25 pages, 6 figures. v2: journal version, some improvements including a new section on physical motivation