cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Entanglement and Nonunitary Evolution
Creators: name: Brustein, Ram
name: Einhorn, Martin B.
name: Yarom, Amos
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a collapsing relativistic spherical shell for a free quantum field. Once the center of the wavefunction of the shell passes a certain radius R, the degrees of freedom inside R are traced over. We show that an observer outside this region will determine that the evolution of the system is nonunitary. We argue that this phenomenon is generic to entangled systems, and discuss a possible relation to black hole physics.
description: 14 pages, 1 figure; Added a clarification regarding the relation with black hole physics
Gravitational Lensing By a Massive Object in a Dark Matter Halo. I. Critical Curves and Caustics
Creators: name: Karamazov, Michal
name: Timko, Lukas
name: Heyrovsky, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the gravitational lensing properties of a massive object in a dark matter halo, concentrating on the critical curves and caustics of the combined lens. We model the system in the simplest approximation by a point mass embedded in a spherical Navarro$-$Frenk$-$White density profile. The low number of parameters of such a model permits a systematic exploration of its parameter space. We present galleries of critical curves and caustics for different masses and positions of the point in the halo. We demonstrate the existence of a critical mass, above which the gravitational influence of the centrally positioned point is strong enough to eliminate the radial critical curve and caustic of the halo. In the point-mass parameter space we identify the boundaries at which critical-curve transitions and corresponding caustic metamorphoses occur. The number of transitions as a function of position of the point is surprisingly high, ranging from three for higher masses to as many as eight for lower masses. On the caustics we identify the occurrence of six different types of caustic metamorphoses. We illustrate the peculiar properties of the single radial critical curve and caustic appearing in an additional unusual non-local metamorphosis for a critical mass positioned at the halo center. Although we constructed the model primarily to study the lensing influence of individual galaxies in a galaxy cluster, it can also be used to study the lensing by dwarf satellite galaxies in the halo of a host galaxy, as well as (super)massive black holes at a general position in a galactic halo.
description: 23 pages, 13 figures, accepted to ApJ
Hupa language lesson and discussion of marriage and spiritual beliefs
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-090907-07a/c: Hupa language lesson focused on greetings and introducing oneself, followed by discussion in English about how Hupa and Yurok people have mixed in recent years, beliefs about resurrection, and a summary of the story of the Creator's Helper.
Elecciones 2021 en contexto de pospandemia: una propuesta para adaptar los establecimientos electorales en la Ciudad autónoma de Buenos Aires
Creators: name: Santamarina, Sofia
Publisher: name: figshare
Year: 2021
Subjects: subject: 180114 Human Rights Law
subject: FOS: Law

description: Las elecciones deberán adecuarse a este nuevo contexto para minimizar los riesgos sanitarios y, a la vez, garantizar la integridad del proceso y la transparencia de los resultados. La experiencia comparada muestra que sumar más lugares de votación brinda más seguridad sanitaria, no conlleva cambios normativos ni afecta la calidad de los comicios. Desde la Coordinación Operativa de Derechos Políticos y Observatorio Electoral de la Defensoría del Pueblo de la Ciudad Autónoma de Buenos Aires se presenta esta propuesta para redistribuir las mesas electorales en más establecimientos en la Ciudad Autónoma de Buenos Aires. A partir de los datos de las elecciones generales 2019 se realiza una clasificación de los establecimientos de acuerdo a la cantidad de mesas electorales y se propone una redistribución de las mesas a partir de los siguientes criterios: I. Los establecimientos con 5 o menos mesas no se modifican II. Para los establecimientos con más de 5 mesas se reduce a la mitad de las mesas con un mínimo de 5 mesas por establecimiento. Así se obtienen las “mesas excedentes”. III. Para redistribuir las “mesas excedentes” se trabajó con la hipótesis de “peor escenario posible”: los nuevos lugares seleccionados son todos pequeños y podrían tener 5 mesas para garantizar las medidas sanitarias de distanciamiento social y ventilación de espacios cerrados. Si bien la distribución de las mesas dependerá del tamaño y capacidad de los lugares escogidos, se propone trabajar con el máximo de establecimientos necesarios. Con los supuestos mencionados, fundamentalmente que todos los lugares a incorporar sólo pueden tener 5 (cinco) mesas, es necesario incorporar aproximadamente 599 establecimientos de votación. Finalmente, se propone la utilización de los clubes y clubes de barrio como establecimientos de votación
Vortex polarity switching by a spin--polarized current
Creators: name: Caputo, Jean-Guy
name: Gaididei, Yuri
name: Mertens, Franz G.
name: Sheka, Denis D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The spin-transfer effect is investigated for the vortex state of a magnetic nanodot. A spin current is shown to act similarly to an effective magnetic field perpendicular to the nanodot. Then a vortex with magnetization (polarity) parallel to the current polarization is energetically favorable. Following a simple energy analysis and using direct spin--lattice simulations, we predict the polarity switching of a vortex. For magnetic storage devices, an electric current is more effective to switch the polarity of a vortex in a nanodot than the magnetic field.
Getting ready for Physics at the LHC with the CMS Detector
Creators: name: Drollinger, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In order to get ready for physics at the LHC, the CMS experiment has to be set up for data taking. The data have to be well understood before new physics can be investigated. On the other hand, there are standard processes, well known from previous experiments and from simulation, which will help to understand the data of the detector in the early days of the LHC.
description: presented at Lake Louise Winter Institute 2006, 17-23 February 2006, Alberta, Canada
Extreme jet ejections from the black hole X-ray binary V404 Cygni
Creators: name: Tetarenko, Alexandra Jean; Sivakoff, Gregory Robert; Miller-Jones, James C. A.; Rosolowsky, E. W.; Petitpas, G.; Gurwell, M.; Wouterloot, J.; Fender, Rob P.; Heinz, S.; Maitra, D.; Markoff, Sera B.; Migliari, Simone; Rupen, Michael P.; Rushton, Anthony P.; Russell, D. M.; Russell, Thomas D.; Sarazin, Craig L.
Publisher: name: University of Alberta Libraries
Year: 2017

Abstract
Níveis atmosféricos e doses inaladas de material particulado (PM10) em ambientes escolares em Luanda
Creators: name: Cipoli, Yago Alonso
name: Charres, Isabella Fandino
name: Furst, Leonardo
name: Ituamba, Joaquim
name: Leitão, Anabela
name: Alves, Célia
Publisher: name: Revista Captar: Ciência e Ambiente para Todos
Year: 2024

description: Apesar dos muitos estudos sobre concentrações de material particulado em ambientes escolares em países desenvolvidos, o impacto dos poluentes atmosféricos nas crianças em idade escolar em África tem recebido relativamente pouca atenção. Neste estudo, as concentrações atmosféricas de material particulado com diâmetro aerodinâmico inferior a 10 µm (PM10) foram avaliadas em ambientes interiores e exteriores de quatro escolas primárias de Luanda, Angola, em setembro e outubro de 2023, usando monitores fotométricos e amostradores gravimétricos. As concentrações médias de PM10 variaram entre 34,4 ± 27,5 e 118 ± 88,5 μg m-3 nas salas de aula e de 60,2 ± 19,1 a 125 ± 26,7 μg m-3 nos pátios exteriores das escolas. Em geral, os rácios interior/exterior para PM10 foram inferiores a 1. As doses diárias inaladas nos períodos letivos oscilaram entre 63 e 221 μg e entre 65 e 238 μg para as crianças do sexo masculino e feminino, respetivamente. Verificou-se que as concentrações de PM10 e as doses inaladas nas escolas de Luanda são mais elevadas do que as reportados para estabelecimentos de ensino de países europeus, excedendo os valores guia recomendados pela Organização Mundial da Saúde.
description: Revista Captar: Ciência e Ambiente para Todos, vol. 13 (2024)
Select, Substitute, Search: A New Benchmark for Knowledge-Augmented Visual Question Answering
Creators: name: Jain, Aman
name: Kothyari, Mayank
name: Kumar, Vishwajeet
name: Jyothi, Preethi
name: Ramakrishnan, Ganesh
name: Chakrabarti, Soumen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Multimodal IR, spanning text corpus, knowledge graph and images, called outside knowledge visual question answering (OKVQA), is of much recent interest. However, the popular data set has serious limitations. A surprisingly large fraction of queries do not assess the ability to integrate cross-modal information. Instead, some are independent of the image, some depend on speculation, some require OCR or are otherwise answerable from the image alone. To add to the above limitations, frequency-based guessing is very effective because of (unintended) widespread answer overlaps between the train and test folds. Overall, it is hard to determine when state-of-the-art systems exploit these weaknesses rather than really infer the answers, because they are opaque and their 'reasoning' process is uninterpretable. An equally important limitation is that the dataset is designed for the quantitative assessment only of the end-to-end answer retrieval task, with no provision for assessing the correct(semantic) interpretation of the input query. In response, we identify a key structural idiom in OKVQA ,viz., S3 (select, substitute and search), and build a new data set and challenge around it. Specifically, the questioner identifies an entity in the image and asks a question involving that entity which can be answered only by consulting a knowledge graph or corpus passage mentioning the entity. Our challenge consists of (i)OKVQAS3, a subset of OKVQA annotated based on the structural idiom and (ii)S3VQA, a new dataset built from scratch. We also present a neural but structurally transparent OKVQA system, S3, that explicitly addresses our challenge dataset, and outperforms recent competitive baselines.
description: Accepted at SIGIR 2021
Κάσος: μνημειακή τοπογραφία και κεραμικά ευρήματα από τα γεωμετρικά έως τα ελληνιστικά χρόνια
Creators: name: Μαστροπαύλος, Γεώργιος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αρχαιολογία της νήσου Κάσου
Μνημειακή τοπογραφία Δωδεκανήσων
Κεραμική από τα Δωδεκάνησα
Archaeology of Kasos island
Monumental topography of the Dodecanese
Pottery from the Dodecanese

description: Η νήσος Κάσος βρίσκεται στο νοτιοανατολικό Αιγαίο και εντάσσεται διοικητικά και γεωγραφικά στα Δωδεκάνησα. Η παρούσα εργασία επικεντρώνεται σε δύο θεματικούς άξονες της αρχαιολογικής έρευνας στο νησί. Ο πρώτος σχετίζεται με την οργάνωση του χώρου από τους αρχαίους κατοίκους του νησιού και την απάντηση τους στην πρόκληση του περιβάλλοντος και των ιστορικών συνθηκών από τη γεωμετρική έως τη ρωμαϊκή περίοδο. Η εξέταση βασίζεται στη δημιουργία και τον συνδυασμό τριών χαρτών: του γεωφυσικού, του κλιματοβοτανολογικού και του χάρτη της αρχαίας ανθρώπινης δραστηριότητας. Ο δεύτερος θεματικός άξονας αφορά τα κεραμικά ευρήματα που έχουν εντοπιστεί στο νησί και χρονολογούνται από τους γεωμετρικούς έως τους ρωμαϊκούς χρόνους. Στο πρώτο μέρος σχολιάζεται μία ομάδα, ως επί το πλείστον εισαγμένης (Αττική, Κνίδος (;), Κόρινθος, Ρόδος), κεραμικής, η οποία παρέμενε αδημοσίευτη ή ημιτελώς δημοσιευμένη. Στο δεύτερο μέρος, τα στοιχεία που προέκυψαν από τη μελέτη αυτής της ομάδας κεραμικής συνδυάζονται με τα δεδομένα που προήλθαν από τη συγκέντρωση έτερων εισαγμένων κεραμικών ευρημάτων από τη βιβλιογραφία (Αττική, Κνίδος (;), Κρήτη, Κυκλάδες, Κως, Ρόδος), ώστε να προσεγγιστεί το ζήτημα των εμπορικών σχέσεων της Κάσου από τους γεωμετρικούς έως τους ρωμαϊκούς χρόνους
description: The island of Kasos is located in the southeast Aegean and it is administratively and geographically part of the Dodecanese. The present master thesis focuses on two thematic aspects of archaeological research on the island. The first is related to the organization of the space by the ancient inhabitants of the island and their response to the challenge of the environment and historical conditions from the Geometric to the Roman period. The examination is based on the creation and combination of three maps: geophysical, climate – botanical and the map of ancient human activity. The second thematic aspect is related to the ceramic finds that have been found on the island and are dated from the Geometric to the Roman times. The subject of the first part is the commentary of a group of pottery, mostly imported (Attica, Knidos (?), Corinth, Rhodes), which remained unpublished or semi-published. In the second part, the data taken from this pottery group are combined with the information obtained from other imported ceramic finds from the literature (Attica, Knidos (?), Crete, Cyclades, Kos, Rhodes) with purpose to examine the issue of trade relations of Kasos from the Geometric to the Roman times
Blow-up criterion of strong solutions to the Navier-Stokes equations in Besov spaces with negative indices
Creators: name: Yuan, Baoquan
name: BoZhang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q30

description: A Hölder type inequality in Besov spaces is established and applied to show that every strong solution $u(t,x)$ on (0,T) of the Navier-Stokes equations can be continued beyond $t>T$ provided that the vorticity $ω(t,x)\in L^{\frac 2{2-α}}(0,T;\dot{B}^{-α}_{\infty,\infty}(\mr^3))\cap L^{\frac2{1-α}}(0,T;\dot{B}^{-1-α}_{\infty,\infty}(\mr^3))$ for $0
Insight into the baryon-gravity relation in galaxies
Creators: name: Famaey, Benoit
name: Gentile, Gianfranco
name: Bruneton, Jean-Philippe
name: Zhao, HongSheng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of spiral galaxies strongly support a one-to-one analytical relation between the inferred gravity of dark matter at any radius and the enclosed baryonic mass. It is baffling that baryons manage to settle the dark matter gravitational potential in such a precise way, leaving no "messy" fingerprints of the merging events and "gastrophysical" feedbacks expected in the history of a galaxy in a concordance Universe. This correlation of gravity with baryonic mass can be interpreted from several non-standard angles, especially as a modification of gravity called TeVeS, in which no galactic dark matter is needed. In this theory, the baryon-gravity relation is captured by the dieletric-like function mu of Modified Newtonian Dynamics (MOND), controlling the transition from 1/r^2 attraction in the strong gravity regime to 1/r attraction in the weak regime. Here, we study this mu-function in detail. We investigate the observational constraints upon it from fitting galaxy rotation curves, unveiling the degeneracy between the stellar mass-to-light ratio and the mu-function as well as the importance of the sharpness of transition from the strong to weak gravity regimes. We also numerically address the effects of non-spherical baryon geometry in the framework of non-linear TeVeS, and exhaustively examine how the mu-function connects with the free function of that theory. In that regard, we exhibit the subtle effects and wide implications of renormalizing the gravitational constant. We finally present a discontinuity-free transition between quasi-static galaxies and the evolving Universe for the free function of TeVeS, inevitably leading to a return to 1/r^2 attraction at very low accelerations in isolated galaxies.
description: 15 pages, 5 figures; improved clarity; accepted for publication in Phys. Rev. D
Explicit soliton-black hole correspondence for static configurations
Creators: name: Beheshti, Shabnam
name: Williams, Floyd L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct an explicit map that transforms static, generalized sine-Gordon metrics to black hole type metrics. This, in particular, provides for a further description of the Cadoni correspondence (which extends the Gegenberg-Kunstatter correspondence) of soliton solutions and extremal black hole solutions in 2D dilaton gravity.
description: Submitted to Phys Rev D, 7 pages, no figures
Rare Kaon Decay to Missing Energy: Implications of the NA62 Result for a $Z^\prime$ Model
Creators: name: de Melo, Téssio B.
name: Kovalenko, Sergey
name: Queiroz, Farinaldo S.
name: Siqueira, C.
name: Villamizar, Yoxara S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Meson decays offer a good opportunity to probe new physics. The rare kaon decay $K^+ \rightarrow π^+ ν\barν$ is one of the cleanest of them and, for this reason, is rather sensitive to new physics, in particular, vector mediators. NA62 collaboration, running a fixed-target experiment at CERN, recently reported an unprecedented sensitivity to this decay, namely a branching fraction of $BR(K^+ \rightarrow π^+ ν\barν) = (11^{+4.0}_{-3.5})\times 10^{-11}$ at 68\% C.L. Vector mediators that couple to neutrinos may yield a sizeable contribution to this decay. Motivated by the new measurement, we interpret this result in the context of a concrete $Z^\prime$ model, and put our findings into perspective with the correlated $K_L \rightarrow π^0 ν\barν$ decay measured by KOTO collaboration, current, and future colliders, namely the High-Luminosity and High-Energy LHC.
Nanopartículas de tungsténio para a eletrólise da água: uma abordagem sustentável e os seus desafios ambientais
Creators: name: Ganilho, Catarina Isabel
name: Cordeiro, Marta
name: Andreani, Tatiana
name: Pereira, Carlos M.
name: Pereira, Ruth
Publisher: name: Revista Captar: Ciência e Ambiente para Todos
Year: 2024

description: A procura intensa por novas fontes de energia mais sustentáveis, como a produção de hidrogénio através do processo de separação dos componentes da molécula água, tem estado associada à implementação de estratégias e políticas promotoras da neutralidade carbónica das sociedades. Neste sentido, têm sido realizados esforços para explorar catalisadores, para o processo de hidrólise da água, baseados em compostos metálicos de transição, tais como tungsténio (W), nomeadamente com recurso a nanopartículas à base de W (NPW), que apresentam propriedades únicas que variam amplamente com base nas suas dimensões, morfologia e composição. No entanto, a utilização de NPW pode resultar em exposições significativas dos seres humanos e da biota a estes materiais, remetendo assim para diversas questões de segurança ambiental. Portanto, esta revisão salienta a aplicação de NPW como fotocatalisadores para a produção de hidrogénio, bem como as vantagens e as implicações ambientais que esta aplicação pode proporcionar.
description: Revista Captar: Ciência e Ambiente para Todos, vol. 13 (2024)
Aharanov-Bohm interference and fractional statistics in a quantum Hall interferometer
Creators: name: Kim, Eun-Ah
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We compute the temperature, voltage, and magnetic field dependences of the resistance oscillations of a model interferometer designed to measure the fractional statistics of the quasiparticles in the fractional quantum Hall (FQH) effect. The geometry is the same as that used in recent experiments reported in Refs. \cite{camino-prl,camino-T,zhou}. With appropriate assumptions concerning the relative areas of the inner and outer rings of the interferometer, we find theoretical results, including the existence of periodic Aharonov-Bohm oscillations with periods {\it larger} than the fundamental quantum of flux, which are in remarkably good agreement with experiment. It is then possible to make additional experimental predictions with no adjustable parameters which, if verified, would confirm the proposed interpretation of the experiment as a measurement of fractional statistics.
description: 4.1 pages, 3 figures, two references added, to appear in Phys. Rev. Lett
The deformed Early Jurassic Kerr copper-gold porphry deposit, sulphurets gold camp, Northwestern British Columbia
Creators: name: Bridge, David Julian
Publisher: name: University of British Columbia
Year: 2009

description: The Early Jurassic Kerr copper - gold porphyry deposit is hosted within a northerly striking, highly deformed and metamorphosed alteration zone in Late Triassic Stuhini Group sedimentary and volcanic rocks. Mineralization is related to west dipping calc-alkaline monzonite, syenodiorite (197 ± 3 Ma, U-Pb zircon) and K-Ba-feldspar megacrystic plagioclase hornblende porphyry (194 ± 1.5 Ma, U-Pb zircon) dykes. The Late Triassic sedimentary rocks exposed along the footwall form an east dipping, upright sequence of well bedded mudstone with conglomerate lenses overlain by conglomerate, sandstone and argillite. Feldspar fragments in the conglomerate indicate a local volcanic provenance. Copper and gold mineralization is concentrated in a region of early, texturally destructive potassic alteration, which is flanked by lower grade propylitic alteration. The potassic alteration was cut by monzonite dykes that were subsequently altered to sericite - quartz - pyrite. Alteration of the monzonite dykes coincided with widespread retrograde alteration of the potassic assemblage during the development of a banded quartz vein stockwork followed by pyrite - chalcopyrite veins and finally anhydrite - quartz - siderite - pyrite - chalcopyrite veins. The retrograde alteration of the deposit resulted in a core of chlorite - sericite - quartz - anhydrite - pyrite - chalcopyrite - magnetite, which has a halo of yellow sericite - quartz - pyrite - rutile alteration. Structural fabrics in the deposit record southwesterly directed shortening coupled with southeasterly directed extension. A whole rock K-Ar age of 124 ± 4 Ma from deformed sericite - quartz - pyrite monzonite suggests that the deposit was deformed and metamorphosed in the Cretaceous. This age and style of deformation correlates with widespread deformation in the Skeena Fold belt during the Late Jurassic to Early Tertiary. The deformation caused widespread recrystallization of the deposit with only local redistribution into extension gashes. Boudinaged dykes and left lateral displacement of the fabric across westerly dipping faults suggest that this deformation was followed by additional southeasterly directed contraction. Undeformed kersantite dykes (51.5 ± 2 Ma, whole rock K-Ar) intrude these westerly dipping faults. Supergene alteration was focused where anhydrite occurred in the chlorite core of the deposit. Hydration of the anhydrite to gypsum caused the rock to fracture parallel to foliation, and resulted in a flaky rubble zone once the gypsum dissolved. Three supergene alteration zones developed in this permeable rubble: (i) leached hematite/jarosite, (ii) minor native copper and coatings of chalcocite/covellite, and (iii) stable chalcopyrite and pyrite without gypsum or anhydrite. The supergene alteration developed in the chlorite core mainly in response to the dissolution of the gypsum.
Additional file 1 of “Without the need for a second visit” initiative improves patient satisfaction with updated services of outpatient clinics in China
Creators: name: Shen, Jian
name: Zhang, Jun
name: He, Qiang
name: Pan, Haihui
name: Wu, Zhiqiang
name: Nie, Liangming
name: Zhang, Hongfang
name: Liu, Shuning
name: Sun, Yan
name: Du, Yaoqiang
name: Huang, Dongsheng
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Space Science
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Science Policy

description: Additional file 1: Supplementary Table 1. The questionnaire/survey used in this study.
Perceived prejudice in modern multicultural societies: the Muslim minority of Thrace and western Macedonia
Creators: name: Διαμαντόπουλος, Νικήτας Γενναδίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Προκατάληψη
Μειονότητα
Μέσα
Prejudice
Minority
Media

description: Η παρούσα έρευνα εξετάζει τις σχέσεις μεταξύ της ελληνικής ομάδας πλειοψηφίας και της μουσουλμανικής μειονοτικής ομάδας της Θράκης και Δυτικής Μακεδονίας, σχετικά με τις προκατειλημμένες συμπεριφορές, τη διάκριση, τη χρήση στερεοτύπων και την εκδήλωση του ρατσισμού. Ειδικότερα, η μελέτη εξετάζει πώς οι παραστάσεις του ρατσισμού, οι αυτοαναφερόμενες εμπειρίες διακρίσεων και η αντίληψη των προκαταλήψεων είτε μέσω της απεικόνισης των μειονοτήτων είτε μεμονωμένων γνωστικών διαδικασιών επηρεάζουν τις προθέσεις των μουσουλμανικών μειονοτικών ομάδων για αποφυγή ή / και συλλογική δράση, καθώς και τη γενική αντίληψή τους για την εξωτερική ομάδα. Για το σκοπό αυτό, η έρευνα αυτή διεξήγαγε δύο ξεχωριστές μελέτες: μία με στόχο την παρακολούθηση των πεποιθήσεων της πλειοψηφικής ομάδας (Έλληνες) και μία για τη μέτρηση των πεποιθήσεων της μειονοτικής ομάδας (μουσουλμάνων) μέσω της διανομής ερωτηματολογίων. Μετά τη συλλογή των ξεχωριστών δεδομένων, ο ερευνητής πραγματοποίησε μια συγκριτική ανάλυση και συζήτηση των αποτελεσμάτων, προκειμένου να βρει πώς επηρεάζεται η αντίληψη της προκατάληψης και από τις δύο ομάδες
description: he current research examines the relations between the Greek majority group and the Muslim minority group of Thrace and western Macedonia, regarding prejudiced attitudes, discriminatory behavior, use of stereotypes and manifestation of racism. In particular, the study examines how representations of racism, self-reported experiences of discrimination and the perception of prejudice either through media portrayal of minorities or individual cognitive processes influence the Muslim minority groups’ intents for avoidance and/or collective action, as well as its general perception of the outgroup. For this purpose, this research conducted two separate studies: one aiming to monitor the beliefs of the majority group (Greeks) and one to monitor the beliefs of the minority group (Muslims) through distribution of questionnaires. Upon collecting the separate data, the researcher performed a comparative analysis and discussion of the results, in order to highlight how the perception of prejudice by both groups affects them in conjunction with one another
Spatially inhomogeneous superconductivity in UTe2
Creators: name: Thomas, S. M.
name: Stevens, C.
name: Santos, F. B.
name: Fender, S. S.
name: Bauer, E. D.
name: Ronning, F.
name: Thompson, J. D.
name: Huxley, A.
name: Rosa, P. F. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Newly-discovered superconductor UTe$_2$ is a strong contender for a topological spin-triplet state wherein a multi-component order parameter arises from two nearly-degenerate superconducting states. A key issue is whether both of these states intrinsically exist at ambient pressure. Through thermal expansion and calorimetry, we show that UTe$_2$ at ambient conditions exhibits two detectable transitions only in some samples, and the size of the thermal expansion jump at each transition varies when the measurement is performed in different regions of the sample. This result indicates that the two transitions arise from two spatially separated regions that are inhomogeneously mixed throughout the volume of the sample, each with a discrete superconducting transition temperature (T$_c$). Notably, samples with higher T$_c$ only show a single transition at ambient pressure. Above 0.3 GPa, however, two transitions are invariably observed in ac calorimetry. Our results not only point to a nearly vertical line in the pressure-temperature phase diagram but also provide a unified scenario for the sample dependence of UTe$_{2}$.
description: 6 pages, 4 figures, includes supplemental information, changed conclusion on the origin of double-transition feature observed in some UTe2 samples
Ultrarapidly decreasing ultradifferentiable functions, Wigner distributions and density matrices
Creators: name: Aubry, Jean-Marie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46A13; 33C45; 81Q99

description: Spaces $S_ω, S_{\{ω\}}, S_{(ω)}$ of ultradecreasing ultradifferentiable (or for short, ultra-S) functions, depending on a weight $e^{ω(x)}$, are introduced in the context of quantum statistics. The corresponding coefficient spaces in the Fock basis are identified, and it is shown that the Hermite expansion is a tame isomorphism between these spaces. These results are used to link decrease properties of density matrices to corresponding properties of the Wigner distribution.
Very Special (de Sitter) Relativity
Creators: name: Álvarez, Enrique
name: Vidal, Roberto
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The effects of a non-vanishing value for the cosmological constant in the scenario of Lorentz symmetry breaking recently proposed by Cohen and Glashow (which they denote as Very Special Relativity) are explored and observable consequences are pointed out.
description: LaTex, 14 pages
A New Data Processing Inequality and Its Applications in Distributed Source and Channel Coding
Creators: name: Kang, W.
name: Ulukus, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: H.1.1

description: In the distributed coding of correlated sources, the problem of characterizing the joint probability distribution of a pair of random variables satisfying an n-letter Markov chain arises. The exact solution of this problem is intractable. In this paper, we seek a single-letter necessary condition for this n-letter Markov chain. To this end, we propose a new data processing inequality on a new measure of correlation by means of spectrum analysis. Based on this new data processing inequality, we provide a single-letter necessary condition for the required joint probability distribution. We apply our results to two specific examples involving the distributed coding of correlated sources: multi-terminal rate-distortion region and multiple access channel with correlated sources, and propose new necessary conditions for these two problems.
description: 45 pages, 3 figures, submitted to IEEE Trans. Information Theory
Elicitation of vocabulary from the Hupa Language Dictionary
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-090907-05 and VP-090907-06: Elicitation of vocabulary from the Hupa Language Dictionary. English headwords 'wood' to 'write' (VP-090907-05) and 'yawn' to 'zigzag design' (VP-090907-06).
Collisional strong-field QED kinetic equations from first principles
Creators: name: Fauth, Gregor
name: Berges, Jürgen
name: Di Piazza, Antonino
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from nonequilibrium quantum field theory on a closed time path, we derive kinetic equations for the strong-field regime of quantum electrodynamics (QED) using a systematic expansion in the gauge coupling $e$. The strong field regime is characterized by a large photon field of order $\mathcal{O}(1/e)$, which is relevant for the description of, e.g., intense laser fields, the initial stages of off-central heavy ion collisions, and condensed matter systems with net fermion number. The strong field enters the dynamical equations via both quantum Vlasov and collision terms, which we derive to order $\mathcal{O}(e^2)$. The kinetic equations feature generalized scattering amplitudes that have their own equation of motion in terms of the fermion spectral function. The description includes single photon emission, electron-positron pair photoproduction, vacuum (Schwinger) pair production, their inverse processes, medium effects and contributions from the field, which are not restricted to the so-called locally-constant crossed field approximation. This extends known kinetic equations commonly used in strong-field QED of intense laser fields. In particular, we derive an expression for the asymptotic fermion pair number that includes leading-order collisions and remains valid for strongly inhomogeneous fields. For the purpose of analytically highlighting limiting cases, we also consider plane-wave fields for which it is shown how to recover Furry-picture scattering amplitudes by further assuming negligible occupations. Known on-shell descriptions are recovered in the case of simply peaked ultrarelativistic fermion occupations. Collisional strong-field equations are necessary to describe the dynamics to thermal equilibrium starting from strong-field initial conditions.
description: 45 pages, 8 figures; journal version (previous version only implemented changes of first proof), minor changes
On the evolution of tachyonic perturbations at super-Hubble scales
Creators: name: Jain, Rajeev Kumar
name: Chingangbam, Pravabati
name: Sriramkumar, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the slow-roll inflationary scenario, the amplitude of the curvature perturbations approaches a constant value soon after the modes leave the Hubble radius. However, relatively recently, it was shown that the amplitude of the curvature perturbations induced by the canonical scalar field can grow at super-Hubble scales if there is either a transition to fast roll inflation or if inflation is interrupted for some period of time. In this work, we extend the earlier analysis to the case of a non-canonical scalar field described by the Dirac-Born-Infeld action. With the help of a specific example, we show that the amplitude of the tachyonic perturbations can be enhanced or suppressed at super-Hubble scales if there is a transition from slow roll to fast roll inflation. We also illustrate as to how the growth of the entropy perturbations during the fast roll regime proves to be responsible for the change in the amplitude of the curvature perturbations at super-Hubble scales. Furthermore, following the earlier analysis for the canonical scalar field, we show that the power spectrum evaluated in the long wavelength approximation matches the exact power spectrum obtained numerically very well. Finally, we briefly comment on an application of this phenomenon.
description: v1: 15 pages, 4 figures; v2: 16 pages, 5 figures, power spectrum included, discussion in section 5 enlarged, references added; v3: 17 pages, 5 figures, enhancement AS WELL AS suppression of modes at super-Hubble scales pointed out, title changed, discussions enlarged, references added, to appear in JCAP
Social Media Polarization and Echo Chambers in the Context of COVID-19: Case Study
Creators: name: Jiang, Julie
name: Ren, Xiang
name: Ferrara, Emilio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Background: Social media chatter in 2020 has been largely dominated by the COVID-19 pandemic. Existing research shows that COVID-19 discourse is highly politicized, with political preferences linked to beliefs and disbeliefs about the virus. As it happens with topics that become politicized, people may fall into echo chambers, which is the idea that one is only presented with information they already agree with, thereby reinforcing one's confirmation bias. Understanding the relationship between information dissemination and political preference is crucial for effective public health communication. Objective: We aimed to study the extent of polarization and examine the structure of echo chambers related to COVID-19 discourse on Twitter in the United States. Methods: First, we presented Retweet-BERT, a scalable and highly accurate model for estimating user polarity by leveraging language features and network structures. Then, by analyzing the user polarity predicted by Retweet-BERT, we provided new insights into the characterization of partisan users. Results: We observed that right-leaning users were noticeably more vocal and active in the production and consumption of COVID-19 information. We also found that most of the highly influential users were partisan, which may contribute to further polarization. Importantly, while echo chambers exist in both the right- and left-leaning communities, the right-leaning community was by far more densely connected within their echo chamber and isolated from the rest. Conclusions: We provided empirical evidence that political echo chambers are prevalent, especially in the right-leaning community, which can exacerbate the exposure to information in line with pre-existing users' views. Our findings have broader implications in developing effective public health campaigns and promoting the circulation of factual information online.
description: Published in JMIRx Med 2 (3), e29570, 2021
Η Εσχατολογία των Πεντηκοστιανών
Creators: name: Κωνσταντινίδης, Νικόλαος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Πεντηκοστιανοί
Εσχατολογία
Αρπαγή
Pentecostals
Eschatology
Rapture

description: Σκοπός της διπλωματικής εργασίας ήταν η ανάδειξη της Πεντηκοστιανικής Εσχατολογίας. Εξαρχής εντοπίστηκε ο χρόνος και ο τρόπος εμφάνισης και η ιστορική διαδρομή του Κινήματος μέχρι τις ημέρες μας. Στη συνέχεια αναλύθηκαν τα κυριότερα θεολογικά του χαρακτηριστικά, τα αποκαλούμενα Αγιοπνευματικά χαρίσματα της γλωσσολαλιάς, της θεραπείας και της προφητείας. Ιδιαίτερη σημασία δόθηκε στις διακηρύξεις που έχουν γίνει διαχρονικά όσον αφορά στο τέλος του κόσμου και τα όσα θα προηγηθούν. Παρουσιάσθηκαν οι κυριότερες εσχατολογικές δοξασίες της Αρπαγής, της Μεγάλης Θλίψης, της Χιλιετούς Βασιλείας και της Τελικής Κρίσης. Επιπλέον επιχειρήθηκε μία συνοπτική καταγραφή των κυριότερων διαφορών που εντοπίζονται μεταξύ της Πεντηκοστιανικής Εσχατολογίας, των υπόλοιπων Προτεσταντικών Ομολογιών και της Ορθόδοξης Ανατολικής Εκκλησίας
description: The purpose of this present dissertation was to point out the Pentecost Eschatology. The time and way of its emergence was firstly mentioned as well as its time path up to nowadays. Afterwards the main theological features were analysed and determined the so called Holy Spirit gifts of speaking in tongues, cure, and prophecy. A particular attention was paid to the declarations which have been made concerning the End of Times and whatever to precede it. In addition the main eschatological doctrines of Rapture, Great Tribulation, Millennium Reign, and Final Judgement were presented. Moreover a brief documentantion has been made to outline the differences among the Pentecostal Eschatology, the rest of Protestant Confessions and the East Orthodox Church
Flow rule, self-channelization and levees in unconfined granular flows
Creators: name: Deboeuf, S.
name: Lajeunesse, E.
name: Dauchot, O.
name: Andreotti, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Unconfined granular flows along an inclined plane are investigated experimentally. During a long transient, the flow gets confined by quasistatic banks but still spreads laterally towards a well-defined asymptotic state following a nontrivial process. Far enough from the banks a scaling for the depth averaged velocity is obtained, which extends the one obtained for homogeneous steady flows. Close to jamming it exhibits a crossover towards a nonlocal rheology. We show that the levees, commonly observed along the sides of the deposit upon interruption of the flow, disappear for long flow durations. We demonstrate that the morphology of the deposit builds up during the flow, in the form of an underlying static layer, which can be deduced from surface velocity profiles, by imposing the same flow rule everywhere in the flow.
description: 4 pages, 5 figures
Microphone check
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-090907-04: Microphone check (Verdena says a phrase in Hupa translated 'before you leave, we're going to go eat').
Modeling Time Series Data of Real Systems
Creators: name: Ahalpara, Dilip P.
name: Parikh, Jitendra C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Dynamics of complex systems is studied by first considering a chaotic time series generated by Lorenz equations and adding noise to it. The trend (smooth behavior) is separated from fluctuations at different scales using wavelet analysis and a prediction method proposed by Lorenz is applied to make out of sample predictions at different regions of the time series. The prediction capability of this method is studied by considering several improvements over this method. We then apply this approach to a real financial time series. The smooth time series is modeled using techniques of non linear dynamics. Our results for predictions suggest that the modified Lorenz method gives better predictions compared to those from the original Lorenz method. Fluctuations are analyzed using probabilistic considerations.
description: 17 pages, 12 figures, accepted in International Journal of Modern Physics C (IJMPC) in May 2006
Resolved, expanding jets in the Galactic black hole candidate XTE J1908+094
Creators: name: Rushton, Anthony P.; Miller-Jones, James C. A.; Curran, P. A.; Sivakoff, Gregory Robert; Rupen, Michael P.; Paragi, Zsolt; Spencer, Ralph E.; Yang, Jinhyuk; Altamirano, Diego; Belloni, Thomaso M.; Fender, Rob P.; Krimm, H. A.; Maitra, D.; Migliari, Simone; Russell, D. M.; Russell, Thomas D.; Soria, Roberto; Tudose, Valeriu
Publisher: name: University of Alberta Libraries
Year: 2017

Abstract
Turing Award elites revisited: patterns of productivity, collaboration, authorship and impact
Creators: name: Jin, Yinyu
name: Yuan, Sha
name: Shao, Zhou
name: Hall, Wendy
name: Tang, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The Turing Award is recognized as the most influential and prestigious award in the field of computer science(CS). With the rise of the science of science (SciSci), a large amount of bibliographic data has been analyzed in an attempt to understand the hidden mechanism of scientific evolution. These include the analysis of the Nobel Prize, including physics, chemistry, medicine, etc. In this article, we extract and analyze the data of 72 Turing Award laureates from the complete bibliographic data, fill the gap in the lack of Turing Award analysis, and discover the development characteristics of computer science as an independent discipline. First, we show most Turing Award laureates have long-term and high-quality educational backgrounds, and more than 61% of them have a degree in mathematics, which indicates that mathematics has played a significant role in the development of computer science. Secondly, the data shows that not all scholars have high productivity and high h-index; that is, the number of publications and h-index is not the leading indicator for evaluating the Turing Award. Third, the average age of awardees has increased from 40 to around 70 in recent years. This may be because new breakthroughs take longer, and some new technologies need time to prove their influence. Besides, we have also found that in the past ten years, international collaboration has experienced explosive growth, showing a new paradigm in the form of collaboration. It is also worth noting that in recent years, the emergence of female winners has also been eye-catching. Finally, by analyzing the personal publication records, we find that many people are more likely to publish high-impact articles during their high-yield periods.
Mini Black Holes in the first year of the LHC
Creators: name: Stoecker, Horst
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The experimental signatures of TeV-mass black hole (BH) formation in heavy ion collisions at the LHC is examined. We find that the black hole production results in a complete disappearance of all very high $p_T$ ({$> 500$} GeV) back-to-back correlated di-jets of total mass {$M > M_f \sim 1$}TeV. We show that the subsequent Hawking-decay produces multiple hard mono-jets and discuss their detection. We study the possibility of cold black hole remnant (BHR) formation of mass $\sim M_f$ and the experimental distinguishability of scenarios with BHRs and those with complete black hole decay. Due to the rather moderate luminosity in the first year of LHC running the least chance for the observation of BHs or BHRs at this early stage will be by ionizing tracks in the ALICE TPC. Finally we point out that stable BHRs would be interesting candidates for energy production by conversion of mass to Hawking radiation.
description: 10 pages, 2 figures
Mixed 3-Sasakian structures and curvature
Creators: name: Caldarella, Angelo V.
name: Pastore, Anna Maria
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 53C25, 53C50

description: In this paper we deal with two classes of mixed metric 3-structures, namely the mixed 3-Sasakian structures and the mixed metric 3-contact structures. Firstly we study some properties of the curvature of mixed 3-Sasakian structures, proving that any manifold endowed with such a structure is Einstein. Then we prove the identity between the class of mixed 3-Sasakian structures and the class of mixed metric 3-contact structures.
description: 14 pages, no figures