cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Το έννομο αγαθό της τιμής και οι ειδικοί λόγοι άρσης του αδίκου στα εγκλήματα κατά της τιμής (άρθρα 366 παρ. 1 και 3 και 367 ΠΚ):
Creators: name: Ζαχαριάδου, Μαρία Αργύριος
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Τιμή
Προσβολή
Αρση
Honour
Act
Justification

description: Αντικείμενο και στόχος της παρούσας Διπλωματικής Εργασίας είναι καταρχήν η μελέτη του εννόμου αγαθού της τιμής και συγκεκριμένα του εννοιολογικού προσδιορισμού του και των διαφόρων απόψεων που έχουν διατυπωθεί σχετικά με αυτό μέσα από μία συμπερασματική και κριτική προσέγγιση. Ακολούθως, γίνεται μία προσπάθεια διεξοδικής παρουσίασης των Ειδικών Λόγων Άρσης του Άδικου χαρακτήρα των εγκλημάτων κατά της τιμής (άρ. 366 παρ. 1 και 3 και 367 Π.Κ.), με επιμέρους αναφορά στη νομική τους φύση, το δικαιολογητικό τους λόγο, ερμηνευτική τους προσέγγιση, νομολογιακή πρακτική, ερμηνευτικά εργαλεία και προσωπικές απόψεις της γράφουσας. Από τις προσβολές της τιμής ιδιαίτερη έμφαση, μέσω προσέγγισης σε ξεχωριστό κεφάλαιο, δίδεται στις προσβολές της τιμής μέσω των ΜΜΕ, αναλογιζόμενης τόσο της συχνότητας εμφάνισής τους στην πράξη όσο και της έντονης σύγκρουσης που δημιουργείται ανάμεσα στο έννομο αγαθό της τιμής και στο συμφέρον του κοινού για ενημέρωση περί θεμάτων που άπτονται του δημόσιου συμφέροντος.
description: The topic and the aim of the present Diplomatic Work is firstly the study of the protected value of honour and especially it’ s meaning and the different expressed opinions, which are relative to this, through a conclusive and critical approach. Additionally, there is an attempt of detailed presentation of the Special Reasons of Justification the acts against honour (articles 366 paragraphs 1 and 3 and 367 Penal Code), with special petition to their legal nature, their justificative reason, their meaning approach, the judicial practice, meaning tools and my personal opinions. From the acts against honour special emphasis, through examination to a separate chapter, is given to the acts against honour from Medias, taking into account not only the frequency of their appearance in act but also the intense conflict, that exists between the protected value of honour and the common interest for information about topics, that touch the public interest.
Description of the multidimensional potential energy surface in fission of $^{252}$Cf and $^{258}$No
Creators: name: Zdeb, A.
name: Warda, M.
name: Robledo, L. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The microscopic studies on nuclear fission require the evaluation of the potential energy surface as a function of the collective coordinates. A reasonable choice of constraints on multipole moments should be made to describe the topography of the surface completely within a reasonable amount of computing time. We present a detailed analysis of fission barriers in the self-consistent Hartree-Fock-Bogoliubov approach with the D1S parametrization of the Gogny nucleon-nucleon interaction. Two heavy isotopes representing different spontaneous fission modes - $^{252}$Cf (asymmetric) and $^{258}$No (bimodal) - have been chosen for the analysis. We have shown the existence of complicated structures on the energy surface that can not be fully described in two-dimensional calculations. We analyze apparent problems that can be encountered in this type of calculations: multiple solutions for given constraints and transitions between various potential energy surfaces. We present possible solutions on how to deal with these issues.
description: 17 pages, 13 figures
Παράγοντες που καθορίζουν την αναγνωστική κατανόηση και άτομα με απώλεια ακοής:
Creators: name: Τασιώνα, Αθηνά
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: subject: Διδακτική της γλώσσας
subject: Linguistics
subject: FOS: Languages and literature

description: Στόχος της παρούσας εργασίας είναι η μελέτη των παραγόντων που επηρεάζουν την αναγνωστική κατανόηση από άτομα με απώλεια ακοής. Για το σκοπό αυτό διεξήχθη έρευνα για να εξεταστούν τα επίπεδα κατανόησης κειμένων από ενήλικα κωφά άτομα. Στο πρώτο μέρος της εργασίας, παρουσιάζονται οι γενικές έννοιες του γραμματισμού και οι μορφές του και γίνεται ανάλυση της διαδικασίας της αναγνωστικής κατανόησης. Αρχικά γίνεται αναφορά στη διαδικασία της ανάγνωσης καθώς και στο πως αυτή διεκπεραιώνεται. Στη συνέχεια γίνεται μια μικρή αναφορά στο ρόλο της μνήμης στην ανάγνωση και μετέπειτα αναλύεται η αναγνωστική κατανόηση και οι παράγοντες που την επηρεάζουν. Επίσης, αναφέρεται η σχέση της μεταγνώσης και μεταγλώσσας και της ανάγνωσης. Τέλος, γίνεται μια παρουσίαση της κουλτούρας των ατόμων με απώλεια ακοής και της νοηματικής γλώσσας και των χαρακτηριστικών της, καθώς και των επιπέδων γραμματισμού τους, το πώς αποκωδικοποιούν το γραπτό λόγο και τι επηρεάζει την αναγνωστική τους κατανόηση.Στο δεύτερο μέρος της εργασίας παρουσιάζεται η μεθοδολογία που ακολουθήθηκε για τη διεξαγωγή της έρευνας, τα υλικά που χρησιμοποιήθηκαν και η περαιτέρω διαδικασία της. Στο τρίτο μέρος, γίνεται ανάλυση των αποτελεσμάτων, ο τρόπος αξιολόγησης των απαντήσεων στα κείμενα που χρησιμοποιήθηκαν για την έρευνα και ο μέσος όρος της βαθμολογίας όλων των απαντήσεων σε κάθε ερώτηση και κείμενο.Τέλος, παρουσιάζονται τα συμπεράσματα της έρευνας και ακολουθούν προτάσεις για την εκπαίδευση των κωφών καθώς και προτάσεις για μελλοντική έρευνα.
description: The aim of this task was the investigation of the factors that affect the reading comprehension of people with hearing impairments. A research was made so as to find out the levels of reading comprehension from deaf adults.The first part of this essay refers to the concept of literacy, its forms and it continues with the concept of reading comprehension. Firstly there is a brief introduction about the procedure of reading and the role of memory on the reading comprehension. The affects of metacognition and metalinguistic awareness on readers comprehension is also set out. Finally there is a description of the culture of deaf people, the sign language and its features, their levels of literacy, how they understand written language and what affects their comprehension.The second part presents the methodology of the research that has been made, the materials that were used for the research and how it was held. The third part includes the analysis of the research, the way and how the answers of the articles, given to the participants were assessed, as well as the mean of their scores of all the answers in each question of every article given. At the end of this essay there is a conclusion about the inferences of the research, ways and methods that can be used in deaf’ s education and finally recommendation for further research.
Queer scapes patterns and processes of gay male and lesbian spatialisation in Vancouver, B.C.
Creators: name: Bouthillette, Ann-Marie
Publisher: name: University of British Columbia
Year: 2009

description: While gay male and lesbian spatialisation has been historicised in some of the literature, and it has been determined that distinct gay male and lesbian neighbourhoods do exist i n our inner cities, the processes that are at work i n each case have seldom been compared. In the case of Vancouver, British Columbia, the two neighbourhoods in question are the West End (for men) and Grandview-Woodland, or 'The Drive' (for women). Such a comparative analysis yields a number of useful insights, particularly as concerns cultural differences between gay men and lesbians. For instance, historical gay male sexual marketplaces form the kernel of gay male ghettoisation, while lesbians' feminist politics (an early lesbian cultural signifier) orient them more towards countercultural enclaves. Similarities are also encountered, especially with respect to the central role of housing availability i n determining permanent gay identification. Specifically, the presence of a large number of single-occupancy apartments is a determining factor i n gay male spatialisation, while gay women typically need low-rent, family-oriented housing. A longitudinal perspective on the production of these gay-identified spaces reveals that their reinscription on Vancouver's landscape is also determined by different processes. The gay West End emerges as a landscape that reflects much more openly a gay presence, with gay-specific institutions and businesses, events, and several visual, cultural cues that inform passers-by of its gay identity. By contrast, The Drive is more subtly gay, and spaces are more likely to be lesbian-friendly or semi-lesbian: unable to support lesbian-only institutions, the women carve their own (sometimes fleeting) spaces out of the existing landscape. Changes are perceived, however, that indicate that boundaries — both between these two districts, and between these and 'straight' spaces more generally — are shifting and even blurring. Gay male and lesbian politics and culture are being transformed, and the spaces with which they have historically identified may no longer reflect these changes. Consequently, not only is there increasing fluidity between the West End and The Drive (with men and women moving from one to the other), but many gay households are openly foregoing these spaces altogether, opting instead for traditionally straight-identified spaces such as the suburbs. These spatial changes are seen as being indicative of the emergence of a 'queer' politics, which seeks to expose the constructedness of sexuality, and thus de-privilege heteronormativity.
Dimer algebras, ghor algebras, and cyclic contractions
Creators: name: Beil, Charlie
Publisher: name: arXiv
Year: 2017
Subjects: subject: Rings and Algebras (math.RA)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 16G20, 16S38, 16S50

description: A ghor algebra is the path algebra of a dimer quiver on a surface, modulo relations that come from the perfect matchings of its quiver. Such algebras arise from abelian quiver gauge theories in physics. We show that a ghor algebra $Λ$ on a torus is a dimer algebra (a quiver with potential) if and only if it is noetherian, and otherwise $Λ$ is the quotient of a dimer algebra by homotopy relations. Furthermore, we classify the simple $Λ$-modules of maximal dimension and give an explicit description of the center of $Λ$ using a special subset of perfect matchings. In our proofs we introduce formalized notions of Higgsing and the mesonic chiral ring from quiver gauge theory.
description: 41 pages. Replaces part of arXiv:1412.1750, with new results
QCD effective action with a most general homogeneous field background
Creators: name: Cho, Y. M.
name: Kim, J. H.
name: Pak, D. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider one-loop effective action of SU(3) QCD with a most general constant chromomagnetic (chromoelectric) background which has two independent Abelian field components. The effective potential with a pure magnetic background has a local minimum only when two Abelian components H_{μν}^3 and H_{μν}^8 of color magnetic field are orthogonal to each other. The non-trivial structure of the effective action has important implication in estimating quark-gluon production rate and p_T-distribution in quark-gluon plasma. In general the production rate depends on three independent Casimir invariants, in particular, it depends on the relative orientation between chromoelectric fields.
description: 6 pages, 3 figures (9 pages in published version)
Multi-dimensional sequential testing and detection
Creators: name: Ekström, Erik
name: Wang, Yuqiong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G40, 62L15

description: We study extensions to higher dimensions of the classical Bayesian sequential testing and detection problems for Brownian motion. In the main result we show that, for a large class of problem formulations, the cost function is unilaterally concave. This concavity result is then used to deduce structural properties for the continuation and stopping regions in specific examples.
Aggregation by exponential weighting, sharp PAC-Bayesian bounds and sparsity
Creators: name: Dalalyan, Arnak
name: Tsybakov, Alexandre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We study the problem of aggregation under the squared loss in the model of regression with deterministic design. We obtain sharp PAC-Bayesian risk bounds for aggregates defined via exponential weights, under general assumptions on the distribution of errors and on the functions to aggregate. We then apply these results to derive sparsity oracle inequalities.
TYPES OF SPEECH ERRORS AND EXAMPLES IN PSYCHOLINGUISTICS
Creators: name: Shodieva Gulsanam Arshiddin kizi Uzbekistan National University, PhD student
Publisher: name: Zenodo
Year: 2024

description: This article is about speech errors and examples of speech errors. And there are a lot of scientists’ awesome opinions about speech errors. It is very helpful to comprehend speech errors with examples. Speech errors are made by non-damaged speakers.

Key words: word exchange, sound exchange, preservation, slip of the tongue, metathesis.
Noetherian criteria for dimer algebras
Creators: name: Beil, Charlie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Let $A$ be a nondegenerate dimer (or ghor) algebra on a torus, and let $Z$ be its center. Using cyclic contractions, we show the following are equivalent: $A$ is noetherian; $Z$ is noetherian; $A$ is a noncommutative crepant resolution; each arrow of $A$ is contained in a perfect matching whose complement supports a simple module; and the vertex corner rings $e_iAe_i$ are pairwise isomorphic.
description: 20 pages. Replaces part of arXiv:1412.1750, with new results. Fixed problem of figures not displaying properly in the PDF of v2
The quantum paraelectric phase of SrTiO$_3$ from first principles
Creators: name: Shin, Dongbin
name: Latini, Simone
name: Schäfer, Christian
name: Sato, Shunsuke A.
name: De Giovannini, Umberto
name: Hübener, Hannes
name: Rubio, Angel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate how the quantum paraelectric ground state of SrTiO$_3$ can be accessed via a microscopic $ab~initio$ approach based on density functional theory. At low temperature the quantum fluctuations are strong enough to stabilize the paraelectric phase even though a classical description would predict a ferroelectric phase. We find that accounting for quantum fluctuations of the lattice and for the strong coupling between the ferroelectric soft mode and lattice elongation is necessary to achieve quantitative agreement with experimental frequency of the ferroelectric soft mode. The temperature dependent properties in SrTiO$_3$ are also well captured by the present microscopic framework.
description: 13 pages, 3 figures, 2 table
Planar Hall effect caused by the memory of antiferromagnetic domain walls in Mn$_3$Ge
Creators: name: Xu, Liangcai
name: Li, Xiaokang
name: Ding, Linchao
name: Behnia, Kamran
name: Zhu, Zengwei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In Mn$_3$X (X=Sn, Ge) antiferromagnets domain walls are thick and remarkably complex because of the non-collinear arrangement of spins in each domain. A planar Hall effect (PHE), an electric field perpendicular to the applied current but parallel to the applied magnetic field, was recently observed inside the hysteresis loop of Mn$_3$Sn. The sign of the PHE displayed a memory tuned by the prior orientation of the magnetic field and its history. We present a study of PHE in Mn$_3$Ge extended from room temperature down to 2 K and show that this memory effect can be manipulated by either magnetic field or thermal cycling. We show that the memory can be wiped out if the prior magnetic field exceeds 0.8 T or when the temperature exceeds $T_\mathrm{N}$. We also find a detectable difference between the amplitude of PHE with zero-field and field thermal cycling. The ratio between the PHE and the anomalous Hall effect (AHE) decreases slightly as temperature is increased from 2 K to $T_{\rm{N}}$, tracks the temperature dependence of magnetization. This erasable memory effect may be used for data storage.
description: 5 pages, 4 figures
Status and Commissioning of the CMS Experiment
Creators: name: Buchmueller, O.
name: Schilling, F. -P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: After a brief overview of the Compact Muon Solenoid (CMS) experiment, the status of construction and installation is described in the first part of the note. The second part of the document is devoted to a discussion of the general commissioning strategy of the CMS experiment, with a particular emphasis on trigger, calibration and alignment. Aspects of b-physics, as well as examples for early physics with CMS are also presented. CMS will be ready for data taking in time for the first collisions in the Large Hadron Collider (LHC) at CERN in late 2007.
description: Talks given at the 11th Intl. Conference on B-Physics at Hadron Machines BEAUTY 2006, Oxford (UK), September 2006
The Conundrum of Strongly Coupled Supercurrent Flow in Both Under- and Over-doped Bi-2212 Round Wires
Creators: name: Oz, Yavuz
name: Jiang, Jianyi
name: Matras, Maxime
name: Oloye, Temidayo Abiola
name: Kametani, Fumitake
name: Hellstrom, Eric E.
name: Larbalestier, David C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Understanding what makes Bi$_2$Sr$_2$Ca$_1$Cu$_2$O$_x$ (Bi-2212) the only high critical current density ($J_c$), high temperature superconductor (HTS) capable of being made as a round wire (RW) is important intellectually because high $J_c$ RW Bi-2212 breaks the paradigm that forces biaxially textured REBCO and uniaxially textured (Bi,Pb)$_2$Sr$_2$Ca$_2$Cu$_3$O$_x$ (Bi-2223) into tape geometries that reproduce the strong anisotropy of the native crystal structure and force expensive fabrication routes to ensure the best possible texture with minimum density of high angle grain boundaries. The biaxial growth texture of Bi-2212 developed during a partial melt heat treatment should favor high $J_c$, even though its $\sim$15$^{\circ}$ full width at half maximum (FWHM) grain-to-grain misorientation is well beyond the commonly accepted strong-coupling range. Its ability to be strongly overdoped should be valuable too, since underdoped cuprate grain boundaries are widely believed to be weakly linked. Accordingly, we here study property changes after oxygen underdoping the optimized, overdoped wire. While $J_c$ and vortex pinning diminish significantly in underdoped wires, we were not able to develop the prominent weak-link signature (a hysteretic $J_c$(H) characteristic) evident in even the very best Bi-2223 tapes with a $\sim$ 15$^{\circ}$ FWHM uniaxial texture. We attribute the high $J_c$ and lack of weak link signature in our Bi-2212 round wires to the high-aspect ratio, large-grain, basal-plane-faced grain morphology produced by partial-melt processing of Bi-2212 which enables $c$-axis Brick-Wall current flow when $ab$-plane transport is blocked. We conclude that the presently optimized biaxial texture of Bi-2212 intrinsically constitutes a strongly coupled current path, regardless of its oxygen doping state.
description: 10 pages, 4 figures
Quantum Communication -- Celebrating the Silver Jubilee of Teleportation
Creators: name: Liss, Rotem
name: Mor, Tal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This is an editorial paper presenting the meaning, history, and influence of quantum teleportation.
description: 6 pages; 1 figure; editorial paper for the eponymous Special Issue published in Entropy: see https://www.mdpi.com/journal/entropy/special_issues/Quantum_Communication
Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
Creators: name: Rice, W. K. M.
name: Armitage, Philip J.
name: Wood, Kenneth
name: Lodato, Giuseppe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The spectral energy distributions (SEDs) of some T Tauri stars display a deficit of near-IR flux that could be a consequence of an embedded Jupiter-mass planet partially clearing an inner hole in the circumstellar disc. Here, we use two-dimensional numerical simulations of the planet-disc interaction, in concert with simple models for the dust dynamics, to quantify how a planet influences the dust at different radii within the disc. We show that pressure gradients at the outer edge of the gap cleared by the planet act as a filter - letting particles smaller than a critical size through to the inner disc while holding back larger particles in the outer disc. The critical particle size depends upon the disc properties, but is typically of the order of 10 microns. This filtration process will lead to discontinuous grain populations across the planet's orbital radius, with small grains in the inner disc and an outer population of larger grains. We show that this type of dust population is qualitatively consistent with SED modelling of systems that have optically thin inner holes in their circumstellar discs. This process can also produce a very large gas-to-dust ratio in the inner disc, potentially explaining those systems with optically thin inner cavities that still have relatively high accretion rates.
description: 9 pages, 7 figures, Accepted fir publication in MNRAS
Anomalous optical saturation of low-energy Dirac states in graphene and its implication for nonlinear optics
Creators: name: Semnani, Behrooz
name: Jago, Roland
name: Safavi-Naeini, Safieddin
name: Majedi, Amir Hamed
name: Malic, Ermin
name: Tassin, Philippe
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We reveal that optical saturation of the low-energy states takes place in graphene for arbitrarily weak electromagnetic fields. This effect originates from the diverging field-induced interband coupling at the Dirac point. Using semiconductor Bloch equations to model the electronic dynamics of graphene, we argue that the charge carriers undergo ultrafast Rabi oscillations leading to the anomalous saturation effect. The theory is complemented by a many-body study of the carrier relaxations dynamics in graphene. It will be demonstrated that the carrier relaxation dynamics is slow around the Dirac point, which in turn leads to a more pronounced saturation. The implications of this effect to the nonlinear optics of graphene is then discussed. Our analysis show that the conventional perturbative treatment of the nonlinear optics, i.e., expanding the polarization field in a Taylor series of the electric field, is problematic for graphene, in particular at small Fermi levels and large field amplitudes.
On fait le point sur les données de la recherche avec Sorella !
Creators: name: Latour, Marie
name: Mahé, Annaïg
name: Copin, Olivier
name: Sauvage, Bénédicte
Publisher: name: Zenodo
Year: 2023
Subjects: comics
research data
gamification
bande dessinée didactique
données de la recherche
ludification
ludicisation

description: Cette bande dessinée didactique a été produite par le Service commun de la Documentation de l'Université de Guyane. Elle s'adresse à un public de doctorants et de chercheurs dans un objectif d'accompagnement à ces nouvelles pratiques scientifiques. Elle a été co-financée par l'URFIST de Paris (Ecole nationale des Chartes - PSL). Elle est le deuxième tome d'une série débutée avec la bande dessinée didactique "On fait le point sur la bibliométrie avec Manuella" déposée également sur Zenodo en 2020. 

L'autrice du scénario de cette bande dessinée est Marie Latour, directrice adjointe du SCD de l'Université de Guyane. Celui-ci a été produit à partir d'un cours dispensé à la bibliothèque universitaire par Annaïg Mahé, enseignante chercheuse à l'URFIST de Paris,  lors de sa venue à l'Université de Guyane à l'occasion de l'Open Access Week organisé en 2021. Les dessins ont été réalisés par un dessinateur professionnel, Olivier Copin, et la réalisation graphique a été confiée à une une graphiste professionnelle également (Bénédicte Sauvage, de la société BCOM). Plusieurs relecteurs avertis ont permis la finalisation de la version définitive : Romain Feret (directeur de Média Normandie), Cyril Heude (data-librarian à Sciences Po Paris), Amélie Barrio (Co-responsable de l'Urfist Occitanie), et de façon plus ponctuelle, Benjamin Caraco (directeur adjoint de la BIU de l'Université de Strasbourg) et Sylvain Houdebert (directeur de l'Université des Antilles).

La bande dessinée est librement et gratuitement réutilisable et modifiable à condition de citer l'Université de Guyane et de ne pas en faire d'exploitation commerciale. Les éventuelles nouvelles versions produites ou documents dérivés devront impérativement être placés également sous licence libre Creative Commons. 

Contact : marie.latour@unc.nc
Measuring Neutron Star Mass and Radius with Three Mass-Radius Relations
Creators: name: Zhang, C. M.
name: Yin, H. X.
name: Kojima, Y.
name: Chang, H. K.
name: Xu, R. X.
name: Li, X. D.
name: Zhang, B.
name: Kiziltan, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose to determine the mass and the radius of a neutron star (NS) using three measurable mass-radius relationships, namely the ``apparent'' radius inferred from neutron star thermal emission, the gravitational redshift inferred from the absorption lines, as well as the averaged stellar mass density inferred from the orbital Keplerian frequency derived from the kilohertz quasi periodic oscillation (kHz QPO) data. We apply the method to constrain the NS mass and the radius of the X-ray sources, 1E 1207.4-5209, Aql X-1 and EXO 0748-676.
description: 8 pages, 3 figures, accepted by MNRAS
Mixed NNLO QCD x electroweak corrections of O(N_f α_s α) to single-W/Z production at the LHC
Creators: name: Dittmaier, Stefan
name: Schmidt, Timo
name: Schwarz, Jan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: First results on the radiative corrections of order O(N_fα_sα) are presented for the off-shell production of W or Z bosons at the LHC, where N_f is the number of fermion flavours. These corrections comprise all diagrams at O(α_sα) with closed fermion loops, form a gauge-invariant part of the next-to-next-to-leading-order corrections of mixed QCD x electroweak type, and are the ones that concern the issue of mass renormalization of the W and Z resonances. The occurring irreducible two-loop diagrams, which involve only self-energy insertions, are calculated with current standard techniques, and explicit analytical results on the electroweak gauge-boson self-energies at O(α_sα) are given. Moreover, the generalization of the complex-mass scheme for a gauge-invariant treatment of the W/Z resonances is described for the order O(α_sα). While the corrections, which are implemented in the Monte Carlo program RADY, are negligible for observables that are dominated by resonant W/Z bosons, they affect invariant-mass distributions at the level of up to 2% for invariant masses of >500 GeV and are, thus, phenomenologically relevant. The impact on transverse-momentum distributions is similar, taking into account that leading-order predictions to those distributions underestimate the spectrum.
description: 38 pages, latex, 8 figures, 3 ancillary files
Defects in CrAs and related compounds: a route to half-metallic ferrimagnetism
Creators: name: Galanakis, I.
name: Ozdogan, K.
name: Sasioglu, E.
name: Aktas, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Half-metallic ferrimagnetism is crucial for spintronic applications with respect to ferromagnets due to the lower stray fields created by these materials. Studying the effect of defects in CrAs and related transition-metal chalcogenides and pnictides crystallizing in the zinc-blende structure, we reveal that the excess of the transition-metal atoms leads to half-metallic ferrimagnetism. The surplus of these atoms are antiferromagnetically coupled to the transition-metal atoms sitting at the perfect lattice sites. The needed condition to achieve half-metallic ferrimagnetism is to prevent the migration of the $sp$ atoms to other sites and the atomic swaps.
Enhanced Tuneable Rotatory Power in a Rotating Plasma
Creators: name: Gueroult, R.
name: Rax, J. -M.
name: Fisch, N. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The gyrotropic properties of a rotating magnetized plasma are derived analytically. Mechanical rotation leads to a new cutoff for wave propagation along the magnetic field and polarization rotation above this cutoff is the sum of the classical magneto-optical Faraday effect and the mechanico-optical polarization drag. Exploiting the very large effective group index near the cutoff, we expose here, for the first time, that polarization drag can be $10^4$ larger than Faraday rotation at GHz frequency. The rotation leads to weak absorption while allowing direct frequency control, demonstrating the unique potential of rotating plasmas for non-reciprocal elements. The very large rotation frequency of a dense non-neutral plasma could enable unprecedented gyrotropy in the THz regime.
description: 6 pages, 3 figures, to be published in Phys. Rev. E
Numerical analysis of a non-clamped dynamic thermoviscoelastic contact problem
Creators: name: Bartman, Piotr
name: Bartosz, Krzysztof
name: Jureczka, Michał
name: Szafraniec, Paweł
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this work, we analyze a non-clamped dynamic viscoelastic contact problem involving thermal effect. The friction law is described by a non-monotone relation between the tangential stress and the tangential velocity. This leads to a system of second-order inclusion for displacement and a parabolic equation for temperature. We provide a fully discrete approximation of the problem and find optimal error estimates without any smallness assumption on the data. The theoretical result is illustrated by numerical simulations.
Δικαιώματα και υποχρεώσεις στη σύμβαση δικαιόχρησης (franchising):
Creators: name: Κοτολούλη, Αλεξάνδρα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Δικαιοπάροχος
Δικαιοδόχος
Πακέτο φραντσάιζινγκ
Franchisor
Franchisee
Franchise package

description: Η σύμβαση franchising είναι μια αμφοτεροβαρής, ενοχική σύμβαση με την οποία θεμελιώνεται μια διαρκής σχέση εμπορικής συνεργασίας μεταξύ δύο ανεξάρτητων επιχειρήσεων: του δικαιοπάροχου ή δότη (franchisor) και του δικαιοδόχου ή λήπτη (franchisee). Αντικειμενικός σκοπός της σύμβασης είναι η διάθεση προϊόντων ή η παροχή υπηρεσιών που προμηθεύεται ο λήπτης από το δότη στους τελικούς καταναλωτές. Στα πλαίσια της σύμβασης franchising ο δότης αναλαμβάνει τις ακόλουθες κύριες υποχρεώσεις: α) να παραχωρήσει στο λήπτη άδεια χρήσης και εκμετάλλευσης του πακέτου franchising, β) να εντάξει το λήπτη στο σύστημα franchising και γ) να παρέχει στο λήπτη συνεχή υποστήριξη κατά τη διάρκεια της συμβατικής τους σχέσης. Από την άλλη πλευρά, ο λήπτης υποχρεούται: α) να λειτουργεί την επιχείρηση του υπό το σύστημα franchising του δότη, ακολουθώντας πιστά τις οδηγίες και εντολές του, β) να προωθεί ενεργά τη διάθεση των συμβατικών προϊόντων ή την παροχή των συμβατικών υπηρεσιών στο καταναλωτικό κοινό, γ) να καταβάλλει τα συμβατικά οικονομικά ανταλλάγματα (δικαίωμα εισόδου και διαρκή δικαιώματα) και δ) να μην ασκεί ανταγωνιστική προς το δότη δραστηριότητα. Η εκπλήρωση των υποχρεώσεων των μερών συνεχίζεται μέχρι τη λύση της σύμβασης. Πρόκειται για ανώνυμη σύμβαση αφού δεν ρυθμίζεται από μία ενιαία και κωδικοποιημένη νομοθεσία.
description: The franchising contract is a mutual one, a debt agreement under which an ongoing relationship based trade cooperation between two independent companies: the company of franchisor and the one of franchisee. The objective of the convention is to provide products or services supplied to the franchisee from franchisor to final consumers. At the franchising contract the franchisor undertakes the following core obligations: a) to give to the franchisee license for holding and using the franchise package, b) to integrate the franchisee in the franchising system and c) to provide the franchisee with ongoing support during their contract relationship. On the other hand, the franchisee is required: a) to operate the business of franchising system in the franchisor, according his instructions and commands, b) to actively promote the sale of the goods or the provision of contractual services to the general public, c) to pay the conventional economic returns (entry fee and royalties) and d) not to exercise competitive activity towards the franchisor. The obligations of the parties continue until the termination of the convention. It is an anonymous convention since no agreement is governed by a single, consolidated legislation.
Model Reduction Methods for Complex Network Systems
Creators: name: Cheng, Xiaodong
name: Scherpen, Jacquelien M. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Network systems consist of subsystems and their interconnections, and provide a powerful framework for analysis, modeling and control of complex systems. However, subsystems may have high-dimensional dynamics, and the amount and nature of interconnections may also be of high complexity. Therefore, it is relevant to study reduction methods for network systems. An overview on reduction methods for both the topological (interconnection) structure of the network and the dynamics of the nodes, while preserving structural properties of the network, and taking a control systems perspective, is provided. First topological complexity reduction methods based on graph clustering and aggregation are reviewed, producing a reduced-order network model. Second, reduction of the nodal dynamics is considered by using extensions of classical methods, while preserving the stability and synchronization properties. Finally, a structure-preserving generalized balancing method for simplifying simultaneously the topological structure and the order of the nodal dynamics is treated.
description: To be published in Annual Review of Control, Robotics, and Autonomous Systems
Demonstration of quantum brachistochrones between distant states of an atom
Creators: name: Lam, Manolo R.
name: Peter, Natalie
name: Groh, Thorsten
name: Alt, Wolfgang
name: Robens, Carsten
name: Meschede, Dieter
name: Negretti, Antonio
name: Montangero, Simone
name: Calarco, Tommaso
name: Alberti, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Transforming an initial quantum state into a target state through the fastest possible route---a quantum brachistochrone---is a fundamental challenge for many technologies based on quantum mechanics. Here, we demonstrate fast coherent transport of an atomic wave packet over a distance of 15 times its size---a paradigmatic case of quantum processes where the target state cannot be reached through a local transformation. Our measurements of the transport fidelity reveal the existence of a minimum duration---a quantum speed limit---for the coherent splitting and recombination of matter waves. We obtain physical insight into this limit by relying on a geometric interpretation of quantum state dynamics. These results shed light upon a fundamental limit of quantum state dynamics and are expected to find relevant applications in quantum sensing and quantum computing.
description: 6 pages, 3 figures, and supplemental material
Reliability of the HMRI (CIHI) database : a re-abstracting study
Creators: name: Brown, Linda Anne
Publisher: name: University of British Columbia
Year: 2009

description: Accuracy of the information in health care database systems is essential throughout the health care system for functions such as planning and research. This study examines the reliabihty of the HMRI database, recently amalgamated under the CIHI. It compares selected data items from the in-patient hospital discharge database against a re-abstracted set of data items from the original health record in a sample of six Vancouver acute care hospitals for the fiscal year 31 March 1986 - 1 April 1987. Cases were restricted to acute care medical and surgical cases. A total of 606 cases using the ICD-9 classification system were re-abstracted using the original health record. Results demonstrated nondiagnostic variables demonstrated an overall agreement of 92.4%. The agreement for the Most Responsible Diagnosis (MRD) to four-digits is 61.4%, while individual hospital scores ranged from 52.0 to 69.6%. For the MRD to three-digits agreement increased to 72.1%, with individual hospitals ranging between 62.4 and 79.4%. The Principal Procedure (PP) agreement to three-digits was 64.8% with individual hospital scores ranging from 56.3 to 75.6%. For the PP at two-digits, agreement was 72.9%, with individual hospitals ranging from 61.4 to 85.4%. Denominators for secondary diagnoses and secondary procedures reflect the total number of diagnoses and/or procedures recorded. Secondary diagnoses to four-digits had agreement scores of 67.4% by number of diagnoses recorded and secondary procedures to three-digits of 80.7% by number of secondary procedures recorded. Total diagnoses and procedures combined demonstrated an overall agrement score of 68.3% with individual hospitals ranging from 61.8 to 73.1%. Agreement by case, where all relevant diagnostic and procedural codes in the entire record matched, dropped significantly to 34.5% for secondary diagnoses and to 59.7% for secondary procedures. The greatest frequency overall for the type of discrepancy was for clerical errors, especially for code books not used properly to determine specificity of the diagnosis. Specificity of the code is required, the information is available in the record, but specificity is not determined by the coder. The greatest frequency of discrepancy for the MRD was 73.1 % for clerical errors. For the PP, 46.9% of discrepancies were in the selection of principal procedure and 42.9% for clerical errors. This study did not demonstrate a significant difference between individual coders by years of experience, by credentials or by years of experience and credentials. It was deterrnined that the data are unsuitable for a quality of care study where the data are utilized beyond the individual hospital site. Care must be taken when utilizing those data for research purposes.
Nilpotent elements in the cohomology of the classifying space of a connected Lie group
Creators: name: Kameko, Masaki
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55R40

description: We give an example of a compact connected Lie group of the lowest rank such that the mod 2 cohomology ring of its classifying space has a nonzero nilpotent element.
description: a minor revision, accepted for publication in Journal of Topology and Analysis
Cancellation Meadows: a Generic Basis Theorem and Some Applications
Creators: name: Bergstra, Jan A.
name: Bethke, Inge
name: Ponse, Alban
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: AC, RA

description: Let Q_0 denote the rational numbers expanded to a "meadow", that is, after taking its zero-totalized form (0^{-1}=0) as the preferred interpretation. In this paper we consider "cancellation meadows", i.e., meadows without proper zero divisors, such as $Q_0$ and prove a generic completeness result. We apply this result to cancellation meadows expanded with differentiation operators, the sign function, and with floor, ceiling and a signed variant of the square root, respectively. We give an equational axiomatization of these operators and thus obtain a finite basis for various expanded cancellation meadows.
description: 24 pages, 6 tables; Inge Bethke is added as an extra author; new title (previous title: A Generic Basis Theorem for Cancellation Meadows)
Charge Ordering in Amorphous WO$_{x}$ Films
Creators: name: Kopelevich, Yakov
name: da Silva, Robson R.
name: Rougier, Aline
name: Lukyanchuk, Igor A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on the observation of highly anisotropic viscous electronic conducting phase in amorphous WO$_{1.55}$ films that occurs below a current (I)- and frequency (f)- dependent temperature T*(I, f). At T < T*(I, f) the rotational symmetry of randomly disordered electronic background is broken leading to the appearance of mutually perpendicular metallic- and insulating-like states. A rich dynamic behavior of the electronic matter occurring at T < T*(I, f) provides evidence for an interplay between pinning effects and electron-electron interactions. The results strongly suggest a dynamic crystallization of the disordered electronic matter, viz. formation of sliding Wigner crystal, as well as the occurrence of quantum smectic or stripe phase in the pinning-dominated regime.
description: 17 pages including 5 figures
Evaluating the susceptibility to conflict of outdoor recreation activities : a case study of backcountry skiing, helicopter skiing, and snowmobiling in the Revelstoke region of British Columbia, Canada
Creators: name: Cooper, Laurie Anne
Publisher: name: University of British Columbia
Year: 2009

description: Powder snow is becoming an increasingly sought-after resource in the backcountiy areas of British Columbia. This thesis focuses on conflicts between backcountiy skiing, helicopter skiing, and snowmobiling in British Columbia, with particular emphasis on the social-psychological causes of the conflicts. The relative susceptibility to conflict of each activity is addressed through an examination of the literature on outdoor recreation conflict, and a series of statements are developed which are aimed at identifying the socialpsychological causes of conflict for each individual activity. The statements developed out of the literature are applied to a case study based on research done in the Revelstoke region of British Columbia. Surveys were distributed to backcountiy skiers, helicopter skiers and snowmobilers and, in this thesis, the survey data is presented and analysed with a view to developing an understanding of the differences between the demographic profiles and attitudes of participants in each of the three winter activities. In the case of backcountiy skiing, helicopter skiing, and snowmobiling, it is evident that there exists a sort of "hierarchy of conflict" with backcountiy skiing being much more susceptible to conflict than either of the other activities. This difference in susceptibility is explained through an examination of the qualities of each activity which make it more or less susceptible to conflict, and it is demonstrated that the susceptibility to conflict of outdoor recreation activities can be predicted through the examination of a set of particular characteristics inherent to each individual activity. Finally, the policy governing commercial recreation in British Columbia is examined in terms of its efficacy in identifying and preventing potential conflicts. Some suggestions are made for improving policy and policy development. The conflicts between backcountiy skiing, helicopter skiing, and snowmobiling can be seen as a microcosm of the kinds of conflicts which arise between competing users of any natural resource. Some of the findings of this thesis have very broad implications, including the demonstration of the following: the apparent dichotomy between environmental impact and economic interests; the globalisation of the economy; the importance of public participation in the development of policy; the inadequacy of zoning as a means of conflict prevention; the need for an evolution from a "frontier" mentality to future planning; the importance of responsibilities, as well as rights; the need for more tools for managing conflicts.
Deuteron photodisintegration with polarized photons at astrophysical energies
Creators: name: Ramachandran, G.
name: Shilpashree, S. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Following precise experimental studies at the Duke Free-Electron Laser Laboratory, we discuss photodisintegration of deuterons with 100% linearly polarized photons using a model independent theoretical approach taking together $M1$ and $E1$ amplitudes simultaneously. The isoscalar $M1_s$ contribution is also taken exactly into account. From the existing experimental measurement on doubly polarized thermal neutron capture, it is seen that the isoscalar $M1_s$ contribution could be of the same order of magnitude as the experimentally measured cross sections at energies relevant to Big Bang Nucleosynthesis (BBN). Therefore appropriate measurements on deuteron photodisintegration are suggested to empirically determine the $M1_s$ contribution at astrophysical energies.
description: 5 Pages, Latex-2e
Gamma-ray emission expected from Kepler's SNR
Creators: name: Berezhko, E. G.
name: Ksenofontov, L. T.
name: Voelk, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to investigate the properties of Kepler's SNR and, in particular, to predict the gamma-ray spectrum expected from this SNR. Observations of the nonthermal radio and X-ray emission spectra as well as theoretical constraints for the total supernova (SN) explosion energy E_sn are used to constrain the astronomical and particle acceleration parameters of the system. Under the assumption that Kepler's SN is a type Ia SN we determine for any given explosion energy E_sn and source distance d the mass density of the ambient interstellar medium (ISM) from a fit to the observed SNR size and expansion speed. This makes it possible to make predictions for the expected gamma-ray flux. Exploring the expected distance range we find that for a typical explosion energy E_sn=10^51 erg the expected energy flux of TeV gamma-rays varies from 2x10^{-11} to 10^{-13} erg/(cm^2 s) when the distance changes from d=3.4 kpc to 7 kpc. In all cases the gamma-ray emission is dominated by π^0-decay gamma-rays due to nuclear CRs. Therefore Kepler's SNR represents a very promising target for instruments like H.E.S.S., CANGAROO and GLAST. A non-detection of gamma-rays would mean that the actual source distance is larger than 7 kpc.
description: 6 pages, 4 figures. Accepted for publication in Astronomy and Astrophysics, minor typos corrected