cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Minimally Immersed 4D Supermembrane
Creators: name: del Moral, M. P. Garcia
name: Pena, J. M.
name: Restuccia, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we summarize some of the properties found in [1], and its relation with [2]. We comment on the construction of the action of the 11D supermembrane with nontrivial central charges minimally immersed on a 7D toroidal manifold is obtained (MIM2).The transverse coordinates to the supermembrane are maps to a 4D Minkowski space-time. The action is invariant under additional symmetries in comparison to the supermembrane on a 11D Minkowski target space. The hamiltonian in the LCG is invariant under conformal transformations on the Riemann surface base manifold. The spectrum of the regularized hamiltonian is discrete with finite multiplicity. Its resolvent is compact. Susy is spontaneously broken, due to the topological central charge condition, to four supersymmetries in 4D, the vacuum belongs to an N=1 supermultiplet. When assuming the target-space to be an isotropic 7-tori, the potential does not contain any flat direction, it is stable on the moduli space of parameters. Moreover due to the discrete symmetries of the hamiltonian, there are only 7 possible minimal holomorphic immersions of the MIM2 on the 7-torus. When these symmetries are identified on the target space, it corresponds to compactify the MIM2 on a orbifold with G2 structure. Once the singularities are resolved it leads to the compactification of the MIM2 on a G2 manifold as shown in [2].
description: 6pg.latex, w-art.class. To appear in the proceedings "RTN ForcesUniverse" Valencia, 1-5 October, Spain, 2007
Rational Combinatorics
Creators: name: Blandin, Hector
name: Diaz, Rafael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: We propose a categorical setting for the study of the combinatorics of rational numbers. We find combinatorial interpretation for the Bernoulli and Euler numbers and polynomials.
description: Adv. in Appl. Math. (2007), doi:10.1016/j.aam.2006.12.006
Dark Energy: Recent Developments
Creators: name: Straumann, Norbert
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A six parameter cosmological model, involving a vacuum energy density that is extremely tiny compared to fundamental particle physics scales, describes a large body of increasingly accurate astronomical data. In a first part of this brief review we summarize the current situation, emphasizing recent progress. An almost infinitesimal vacuum energy is only the simplest candidate for a cosmologically significant nearly homogeneous exotic energy density with negative pressure, generically called Dark Energy. If general relativity is assumed to be also valid on cosmological scales, the existence of such a dark energy component that dominates the recent universe is now almost inevitable. We shall discuss in a second part the alternative possibility that general relativity has to be modified on distances comparable to the Hubble scale. It will turn out that observational data are restricting theoretical speculations more and more. Moreover, some of the recent proposals have serious defects on a fundamental level (ghosts, acausalities, superluminal fluctuations).
description: 19 pages, 5 figures, invited ``brief review'' for Modern Physics Letters A; to appear
Viscosity Overshoot in Biaxial Elongational Flow: Coarse-Grained Molecular Dynamics Simulation of Ring-Linear Polymer Mixtures
Creators: name: Murashima, T.
name: Hagita, K.
name: Kawakatsu, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Viscosity overshoot of entangled polymer melts has been observed under shear flow and uniaxial elongational flow, but has never been observed under biaxial elongational flow. We confirmed the presence of viscosity overshoot under biaxial elongational flows observed in a mixed system of ring and linear polymers expressed by coarse-grained molecular dynamics simulations. The overshoot was found to be more pronounced in weakly entangled melts. Furthermore, the threshold strain rate $\dot{\varepsilon}_{\rm th}$ distinguishing linear and nonlinear behaviors was found to be dependent on the linear chain length as $\dot{\varepsilon}_{\rm th}(N)\sim N^{-1/2}$, which differs from the conventional relationship, $\dot{\varepsilon}_{\rm th}(N) \sim N^{-2}$, expected from the inverse of the Rouse relaxation time. We have concluded that the cooperative interactions between rings and linear chains were enhanced under biaxial elongational flow.
description: 44 pages, 14 figures, 1 graphical abstract
Η Ελλάδα και η Μέση Ανατολή 1967-1973
Creators: name: Πατσώνα, Μαγδαληνή Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Ελληνική στρατιωτική δικτατορία
Μέση Ανατολή
ΗΠΑ
Greek Junta
Middle East
USA

description: Σκοπός τούτης της εργασίας είναι η παρουσίαση του σχήματος σύνδεσης της Ελλάδας και της Μέσης Ανατολής κατά την περίοδο του 1967 ως και του 1973. Στην θέση του υποκειμένου θα βρίσκεται η ελληνική στρατιωτική δικτατορία της προαναφερθείσας περιόδου, με τον χρονικό πλαίσιο να έχει οριστεί από την Αραβοϊσραηλινή διένεξη, ενώ τον ρόλο του συνδετικού κρίκου θα διαδραματίσουν οι Ηνωμένες Πολιτείες της Αμερικής, ως ο κοινός παρανομαστής στις εξελίξεις των δύο γειτονικών γεωγραφικών περιοχών. Απώτερος στόχος θα αποτελέσει η διαπίστωση της ύπαρξης ή μη συσχέτισης του πολιτικού με του οικονομικού παράγοντα και του παρελθόντος με το παρόν, με αφορμή τον εν εξελίξει ως σήμερα ενεργειακό πόλεμο με βασικό πεδίο έκφρασης του να εντοπίζεται στην περιοχή της Ανατολικής Μεσογείου. Λόγω του διαλεκτικού χαρακτήρα που διέπει την επιστήμη της ιστορίας με τις εξελίξεις της ανθρώπινης κοινωνίας, θα μελετηθούν οι μεταπολεμικές δεκαετίες που προηγούνται της υπό εξέτασης περιόδου προς αποφυγή μιας μεταφυσικής αντιμετώπισης και επεξεργασίας των συντελεστών της μελέτης. Τα διπλωματικά αμερικανικά αρχεία του Στέιτ Ντιπάρτμεντ (FRUS) και της CIA αλλά και δευτερογενής βιβλιογραφία θα αποτελέσουν την βάση της έρευνας
description: The aim of this study is to present the connection pattern between Greece and the Middle East from 1967 to 1973. Greek military dictatorship will be in the position of the subject of the for mentioned period with the time frame being defined by the Arabian Israeli conflict, while the United States of America will play the role of the missing link as the common denominator in the developments of the two neighboring geographical areas. The ultimate aim will be the ascertainment of the existence –or non-existence- of interrelation between the political and economic factor as well as between the past with the present, on the basis of the ongoing energy war, whose main field of expression is located in the Eastern Mediterranean region. Due to the dialectical nature of the science of history and the evolution of human society, the preceding post-war decades to the period under examination will be studied in order to avoid a metaphysical treatment and processing of the study contributors. The diplomatic American records of the State Department (FRUS) and the CIA, as well as secondary literature, will form the basis of the research
Applicability of Monte Carlo Glauber models to relativistic heavy ion collision data
Creators: name: Ray, R. L.
name: Daugherity, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The accuracy of Monte Carlo Glauber model descriptions of minimum-bias multiplicity frequency distributions is evaluated using data from the Relativistic Heavy Ion Collider (RHIC) within the context of a sensitive, power-law representation introduced previously by Trainor and Prindle (TP). Uncertainties in the Glauber model input and in the mid-rapidity multiplicity frequency distribution data are reviewed and estimated using the TP centrality methodology. The resulting errors in model-dependent geometrical quantities used to characterize heavy ion collisions ({\em i.e.} impact parameter, number of nucleon participants $N_{part}$, number of binary interactions $N_{bin}$, and average number of binary collisions per incident participant nucleon $ν$) are presented for minimum-bias Au-Au collisions at $\sqrt{s_{NN}}$ = 20, 62, 130 and 200 GeV and Cu-Cu collisions at $\sqrt{s_{NN}}$ = 62 and 200 GeV. Considerable improvement in the accuracy of collision geometry quantities is obtained compared to previous Monte Carlo Glauber model studies, confirming the TP conclusions. The present analysis provides a comprehensive list of the sources of uncertainty and the resulting errors in the above geometrical collision quantities as functions of centrality. The capability of energy deposition data from trigger detectors to enable further improvements in the accuracy of collision geometry quantities is also discussed.
description: 27 pages, 4 figures, 11 tables
La fedeltà del cane” Μεταφραστική και ερμηνευτική προσέγγιση του διηγήματος του Λουίτζι Πιραντέλο
Creators: name: Κροκίδου, Παρασκευή Μαρία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Λουίτζι Πιραντέλο
Διηγήματα για έναν χρόνο
Μεταφραστικές δυσκολίες
Luigi Pirandello
Novels for a year
Translation difficulties

description: Η παρούσα μελέτη έχει ως στόχο την πραγματοποίηση μιας σχολιασμένης μετάφρασης του διηγήματος “La fedeltà del cane” , που περιλαμβάνεται στη συλλογή Novelle per un anno του Λουίτζι Πιραντέλο. Με τα στοιχεία και τα δεδομένα που προκύπτουν από τον σχολιασμό των μεταφραστικών δυσκολιών διεξάγεται μία στατιστική έρευνα σχετικά με την συχνότητα εμφάνισής τους και υλοποιείται η κατηγοριοποίηση των παραγόντων που επηρεάζουν τις επιλογές του μεταφραστή. Η μετάφραση γίνεται σύμφωνα με τα τρία μεθοδολογικά στάδια, όπως αυτά ορίζονται από την Gerzymisch-Arbogast (Βηδενμάιερ, 2009: 2-4) και χρησιμοποιούμε το μοντέλο του Κ. Κάιντλ (Ζωγραφίδου κ.α., 2000: 317-318) για τον σχολιασμό των μεταφραστικών δυσκολιών
description: This study aims to make an annotated translation of the novel "La fedeltà del cane", included in Luigi Pirandello’s collection the Novelle per un anno. Using the data resulting from the commentary on the translation difficulties, a statistical research is conducted on their frequency and a categorization of the factors affecting the translator's choices is implemented.The translation is done according to the three methodological stages, as defined by Gerzymisch-Arbogast (Βηδενμάιερ, 2009: 2-4) and we used K. Κaindl’s model (Ζωγραφίδου et al., 2000: 317-318) for the commenting on the translation difficulties
The crust of neutron stars
Creators: name: Chamel, Nicolas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The structure of the crust of a neutron star is completely determined by the experimentally measured nuclear masses up to a density of the order of 10^11 g.cm^{-3}. At higher densities, the composition of the crust still remains uncertain, mainly due to the presence of ``free'' superfluid neutrons which affect the properties of the nuclear ``clusters''. After briefly reviewing calculations of the equilibrium structure of the crust, we point out that the current approach based on the Wigner-Seitz approximation does not properly describe the unbound neutrons. We have recently abandoned this approximation by applying the band theory of solids. We have shown that the dynamical properties of the free neutrons are strongly affected by the clusters by performing 3D calculations with Bloch boundary conditions.
description: 9 pages, 2 figures, to appear in the Proceedings of the Tours Symposium on Nuclear Physics VI (2006)
Exact solution of mean geodesic distance for Vicsek fractals
Creators: name: Zhang, Zhongzhi
name: Zhou, Shuigeng
name: Chen, Lichao
name: Yin, Ming
name: Guan, Jihong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The Vicsek fractals are one of the most interesting classes of fractals and the study of their structural properties is important. In this paper, the exact formula for the mean geodesic distance of Vicsek fractals is found. The quantity is computed precisely through the recurrence relations derived from the self-similar structure of the fractals considered. The obtained exact solution exhibits that the mean geodesic distance approximately increases as an exponential function of the number of nodes, with the exponent equal to the reciprocal of the fractal dimension. The closed-form solution is confirmed by extensive numerical calculations.
description: 4 pages, 3 figures
A Chandra Search for Coronal X Rays from the Cool White Dwarf GD 356
Creators: name: Weisskopf, Martin C.
name: Wu, Kinwah
name: Trimble, Virginia
name: O'Dell, Stephen L.
name: Elsner, Ronald F.
name: Zavlin, Vyacheslav E.
name: Kouveliotou, Chryssa
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report observations with the Chandra X-ray Observatory of the single, cool, magnetic white dwarf GD 356. For consistent comparison with other X-ray observations of single white dwarfs, we also re-analyzed archival ROSAT data for GD 356 (GJ 1205), G 99-47 (GR 290 = V1201 Ori), GD 90, G 195-19 (EG250 = GJ 339.1), and WD 2316+123 and archival Chandra data for LHS 1038 (GJ 1004) and GD 358 (V777 Her). Our Chandra observation detected no X rays from GD 356, setting the most restrictive upper limit to the X-ray luminosity from any cool white dwarf -- L_{X} < 6.0 x 10^{25} ergs/s, at 99.7% confidence, for a 1-keV thermal-bremsstrahlung spectrum. The corresponding limit to the electron density is n_{0} < 4.4 x 10^{11} cm^{-3}. Our re-analysis of the archival data confirmed the non-detections reported by the original investigators. We discuss the implications of our and prior observations on models for coronal emission from white dwarfs. For magnetic white dwarfs, we emphasize the more stringent constraints imposed by cyclotron radiation. In addition, we describe (in an appendix) a statistical methodology for detecting a source and for constraining the strength of a source, which applies even when the number of source or background events is small.
description: 27 pages, 4 figures, submitted to the Astrophysical Journal
Manipulating a Neutrino Spectrum to Maximize the Physics Potential from a Low Energy Beta Beam
Creators: name: Amanik, Philip S.
name: McLaughlin, Gail C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Proposed low energy beta beam facilities would be capable of producing intense beams of neutrinos (anti-neutrinos) with well defined spectra. We present analytic expressions and numerical results which accurately show how the total neutrino flux reaching the detector depends on the geometry of the source and the detector. Several authors have proposed measurements which require using different flux shapes. We show that detectors of different sizes and shapes will receive neutrino fluxes with different spectral shapes, and that the spectral shape will also be different in different regions of the same detector. Our findings also show that for certain measurements systematic uncertainties and run time can be reduced.
description: 18 pages, 10 figures
The role of Home Care Community Health Volunteers (CHV) in Malaysia
Creators: name: Ali, Muhammad Najib
Publisher: name: figshare
Year: 2021
Subjects: subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business
subject: 140208 Health Economics

description: The objective of this study was to assess the role of Home Care Community Health Volunteer (CHV) in delivering services to elderly and family during the crisis in Home Care in Klang Valley and its associated factors. The result of this study was organized into two (2)-factor framework consisting of contextual factors and outcome factors. The descriptive evaluation methods of research include interviews (qualitative) and mailed questionnaires (quantitative). Data were analyzed to describe self-reported activities of home care CHV as they interacted with elderly, friends and families from 21 Home Care in Klang Valley. The emailed questionnaires were sent to 210 home cares CHV to identify the interaction role of home cares CHV, socialization activities and prevent isolation with elderly. The subjective portions of reports were analyzed to identify concerns described by elderly to home care CHV. The respondents comprised 55% females, 85% married, and 50% aged above 45 and above and 75% completed their education up to secondary school. Data were analyzed to describe self-reported activities of 21 Home Cares CHV as they interacted with elderly, friends and families. Among the activities assigned to home cares CHV is as compulsory duties assisting caregivers of home care such as listening and responding, interaction with elderly, providing physical and spiritual comfort. CHVs offer interpretation and translation services, provide culturally appropriate health education and information, help people get the care they need, give informal counseling and guidance on health behaviors, advocate for individual and community health needs, and provide some direct services such as first aid. The result revealed that 59.0% of the respondents agreed and understood their role of home care CHV. Results feature the analysis of both volunteer (n = 210) and caregivers narratives (n = 21) to make the home healthcare workings more transparent. The results will hope to improve educational programs for home care CHV in terms of evaluation of Hospice and Palliative programs despite establishing a data base support to the need for home care services.
A Computational Framework for Slang Generation
Creators: name: Sun, Zhewei
name: Zemel, Richard
name: Xu, Yang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Slang is a common type of informal language, but its flexible nature and paucity of data resources present challenges for existing natural language systems. We take an initial step toward machine generation of slang by developing a framework that models the speaker's word choice in slang context. Our framework encodes novel slang meaning by relating the conventional and slang senses of a word while incorporating syntactic and contextual knowledge in slang usage. We construct the framework using a combination of probabilistic inference and neural contrastive learning. We perform rigorous evaluations on three slang dictionaries and show that our approach not only outperforms state-of-the-art language models, but also better predicts the historical emergence of slang word usages from 1960s to 2000s. We interpret the proposed models and find that the contrastively learned semantic space is sensitive to the similarities between slang and conventional senses of words. Our work creates opportunities for the automated generation and interpretation of informal language.
description: Accepted for publication in TACL 2021. Author's final version
Nonholonomic Ricci Flows and Running Cosmological Constant: I. 4D Taub-NUT Metrics
Creators: name: Vacaru, Sergiu I.
name: Visinescu, Mihai
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this work we construct and analyze exact solutions describing Ricci flows and nonholonomic deformations of four dimensional (4D) Taub-NUT spacetimes. It is outlined a new geometric techniques of constructing Ricci flow solutions. Some conceptual issues on spacetimes provided with generic off-diagonal metrics and associated nonlinear connection structures are analyzed. The limit from gravity/Ricci flow models with nontrivial torsion to configurations with the Levi-Civita connection is allowed in some specific physical circumstances by constraining the class of integral varieties for the Einstein and Ricci flow equations.
description: latex2e, final variant to be published in IJMPA
Electronic structure of negatively curved graphene
Creators: name: Kolesnikov, D. V.
name: Osipov, V. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the electronic structure of graphene in the presence of either sevenfolds or eightfolds by using a gauge field-theory model. The graphene sheet with topological defects is considered as a negative cone surface with infinite Gaussian curvature at the center. The density of electronic states is calculated for a single seven- and eightfold as well as for a pair of sevenfolds with different morphology. The density of states at the Fermi energy is found to be zero in all cases except two sevenfolds with translational factor $M\neq 0$.
description: To be published in JETP Letters
Broken parity and a chiral ground state in the frustrated magnet CdCr2O4
Creators: name: Chern, Gia-Wei
name: Fennie, C. J.
name: Tchernyshyov, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a model describing the lattice distortion and incommensurate magnetic order in the spinel CdCr2O4, a good realization of the Heisenberg "pyrochlore" antiferromagnet. The magnetic frustration is relieved through the spin-Peierls distortion of the lattice involving a phonon doublet with odd parity. The distortion stablizes a collinear magnetic order with the propagation wavevector q=2π(0,0,1). The lack of inversion symmetry makes the crystal structure chiral. The handedness is transferred to magnetic order by the relativistic spin-orbit coupling: the collinear state is twisted into a long spiral with the spins in the ac plane and q shifted to 2π(0,δ,1).
description: Incremental changes in response to referee reports
Gribov horizon in Noncommutative QED
Creators: name: Holanda, Ozório
name: Guimaraes, Marcelo S.
name: Rosa, Luigi
name: Vitale, Patrizia
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is known that Noncommutative QED (NCQED) exhibits Gribov ambiguities in the Landau gauge. These ambiguities are related to zero modes of the Faddeev-Popov operator and arise in the ghost propagator when it has a pole. In this work, we establish a positive Faddeev-Popov operator for NCQED and the condition for the ghost propagator not to have poles, the so-called Gribov no-pole condition. This condition is implemented in the path integral, and allows for the calculation of the photon propagator in momentum space, which is dependent on the squared non-commutativity parameter. In the commutative limit standard QED is recovered.
description: 20 pages
The role of Home Care COMMUNITY HEALTH VOLUNTEERS (CHV) in Malaysia
Creators: name: Ali, Muhammad Najib
Publisher: name: figshare
Year: 2021
Subjects: subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business
subject: 140208 Health Economics

description: The objective of this study was to assess the role of Home Care Community Health Volunteer (CHV) in delivering services to elderly and family during the crisis in Home Care in Klang Valley and its associated factors. The result of this study was organized into two (2)-factor framework consisting of contextual factors and outcome factors. The descriptive evaluation methods of research include interviews (qualitative) and mailed questionnaires (quantitative). Data were analyzed to describe self-reported activities of home care CHV as they interacted with elderly, friends and families from 21 Home Care in Klang Valley. The emailed questionnaires were sent to 210 home cares CHV to identify the interaction role of home cares CHV, socialization activities and prevent isolation with elderly. The subjective portions of reports were analyzed to identify concerns described by elderly to home care CHV. The respondents comprised 55% females, 85% married, and 50% aged above 45 and above and 75% completed their education up to secondary school. Data were analyzed to describe self-reported activities of 21 Home Cares CHV as they interacted with elderly, friends and families. Among the activities assigned to home cares CHV is as compulsory duties assisting caregivers of home care such as listening and responding, interaction with elderly, providing physical and spiritual comfort. CHVs offer interpretation and translation services, provide culturally appropriate health education and information, help people get the care they need, give informal counseling and guidance on health behaviors, advocate for individual and community health needs, and provide some direct services such as first aid. The result revealed that 59.0% of the respondents agreed and understood their role of home care CHV. Results feature the analysis of both volunteer (n = 210) and caregivers narratives (n = 21) to make the home healthcare workings more transparent. The results will hope to improve educational programs for home care CHV in terms of evaluation of Hospice and Palliative programs despite establishing a data base support to the need for home care services.
Nonlocal Andreev reflection at high transmissions
Creators: name: Kalenkov, Mikhail S.
name: Zaikin, Andrei D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze non-local effects in electron transport across three-terminal normal-superconducting-normal (NSN) structures. Subgap electrons entering S-electrode from one N-metal may form Cooper pairs with their counterparts penetrating from another N-metal. This phenomenon of crossed Andreev reflection -- combined with normal scattering at SN interfaces -- yields two different contributions to non-local conductance which we evaluate non-perturbatively at arbitrary interface transmissions. Both these contributions reach their maximum values at fully transmitting interfaces and demonstrate interesting features which can be tested in future experiments.
description: 4 pages, 4 figures
Interplay between charge order and superconductivity in the kagome metal KV$_3$Sb$_5$
Creators: name: Du, Feng
name: Luo, Shuaishuai
name: Ortiz, Brenden R.
name: Chen, Ye
name: Duan, Weiyin
name: Zhang, Dongting
name: Lu, Xin
name: Wilson, Stephen D.
name: Song, Yu
name: Yuan, Huiqiu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The kagome metal KV$_3$Sb$_5$ hosts charge order, topologically nontrivial Dirac band crossings, and a superconducting ground state with unconventional characteristics, providing an ideal platform to investigate the interplay between different electronic states on the kagome lattice. Here we study the evolution of charge order and superconductivity in KV$_3$Sb$_5$ under hydrostatic pressure using electrical resistivity measurements. With the application of pressure, the superconducting transition temperature $T_{\rm c}=0.9$ K under ambient pressure quickly increases to 3.1 K at $p=0.4$ GPa, as charge order progressively weakens. Upon further increasing pressure, signatures of charge order disappears at $p_{\rm c1}\approx0.5$ GPa and $T_{\rm c}$ is gradually suppressed, forming a superconducting dome that terminates at $p\approx10$ GPa. Beyond $p\approx10$ GPa, a second superconducting dome emerges with maximum $T_{\rm c}\approx1.0$ K at $p_{\rm c2}\approx22$ GPa, which becomes fully suppressed at $p\approx28$ GPa. The suppression of superconductivity for the second superconducting dome is associated with the appearance of a unique high-pressure phase , possibly a distinct charge order.
description: expanded to include new data
Scalar Polynomial Singularities in Power-Law Spacetimes
Creators: name: Lake, Kayll
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, Helliwell and Konkowski (\texttt{gr-qc/0701149}) have examined the quantum "healing" of some classical singularities in certain power-law spacetimes. Here I further examine classical properties of these spacetimes and show that some of them contain naked strong curvature singularities.
description: 7 pages revtex4 two figures extended discussion
Online detection and sorting of extracellularly recorded action potentials in human medial temporal lobe recordings, in vivo
Creators: name: Rutishauser, Ueli
name: Schuman, Erin M.
name: Mamelak, Adam N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Understanding the function of complex cortical circuits requires the simultaneous recording of action potentials from many neurons in awake and behaving animals. Practically, this can be achieved by extracellularly recording from multiple brain sites using single wire electrodes. However, in densely packed neural structures such as the human hippocampus, a single electrode can record the activity of multiple neurons. Thus, analytic techniques that differentiate action potentials of different neurons are required. Offline spike sorting approaches are currently used to detect and sort action potentials after finishing the experiment. Because the opportunities to record from the human brain are relatively rare, it is desirable to analyze large numbers of simultaneous recordings quickly using online sorting and detection algorithms. In this way, the experiment can be optimized for the particular response properties of the recorded neurons. Here we present and evaluate a method that is capable of detecting and sorting extracellular single-wire recordings in realtime. We demonstrate the utility of the method by applying it to an extensive data set we acquired from chronically-implanted depth electrodes in the hippocampus of human epilepsy patients. This dataset is particularly challenging because it was recorded in a noisy clinical environment. This method will allow the development of closed-loop experiments, which immediately adapt the experimental stimuli and/or tasks to the neural response observed.
description: 9 figures, 2 tables. Journal of Neuroscience Methods 2006 (in press). Journal of Neuroscience Methods, 2006 (in press)
Η αποζημίωση πελατείας του εμπορικού αντιπροσώπου σύμφωνα με το δίκαιο της Ευρωπαϊκής Ένωσης και τη νομολογία του Δικαστηρίου της Ευρωπαϊκής Ένωσης
Creators: name: Τσιμπούρα, Ευαγγελία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: αποζημίωση πελατείας
εμπορικός αντιπρόσωπος
οδηγία 86/653/ΕΟΚ
indemnity of clientele
commercial agent
directive 86/653/EEC

description: Σκοπός της παρούσας εργασίας ήταν η μελέτη του θεσμού της αποζημίωσης πελατείας του εμπορικού αντιπροσώπου σύμφωνα με το δίκαιο της Ευρωπαϊκής Ένωσης και τη νομολογία του Δικαστηρίου της Ευρωπαϊκής Ένωσης. Εξετάσαμε το πεδίο εφαρμογής της Οδηγίας 86/653/ΕΟΚ, προσδιορίζοντας τους εμπορικούς αντιπροσώπους γενικά και ειδικά αυτούς στους οποίους εφαρμόζεται η εν λόγω ενωσιακή πράξη και τον τρόπο με τον οποίο αυτοί πρέπει να συμβάλλονται με τον εντολέα τους. Ακολούθως, προσδιορίσαμε τη νομική φύση του θεσμού της αποζημίωσης πελατείας, τα δύο συστήματα υπολογισμού του ύψους αυτής και την διακρίναμε από την αποζημίωση του κοινού δικαίου. Στη συνέχεια, περιγράψαμε τις προϋποθέσεις που πρέπει να συντρέξουν για να στοιχειοθετηθεί η αξίωση περί αποζημίωσης πελατείας, αναλύσαμε τον τρόπο προσδιορισμού του ύψους της αποζημίωσης πελατείας, τις περιπτώσεις κατά τις οποίες αποκλείεται η επιδίκασή της, τον αναγκαστικό χαρακτήρα των ενωσιακών διατάξεων που τη θεσπίζουν και τις βάσεις διεθνούς δικαιοδοσίας και εφαρμοστέου δικαίου. Τέλος, κάναμε μία συνολική επισκόπηση του θεσμού, στην οποία αναφερθήκαμε ιδιαίτερα στην αναλογική εφαρμογή του θεσμού αυτού σε άλλες διαμεσολαβητικές συμβάσεις
description: The aim of the present thesis was the study of indemnity of clientele of the commercial agent according to the law of the European Union and case-law of the Court of Justice of the European Union. We examined the scope of Directive 86/653/EEC, by specifying the commercial agents generally and especially those to whom the Union act applies and how they should contribute to their originator. We then defined the legal nature of the institution of the indemnity of clientele, the two systems of calculating that amount and we distinguished it from the compensation under ordinary law. We then outlined the conditions that need to be met in order to establish the indemnity of clientele’ s claim, we analyzed how to determine the amount of that indemnity, the cases in which it is excluded, the binding nature of the EU provisions establishing it and the grounds of jurisdiction and applicable law. Finally, we overviewed comprehensively the institution, which we referred to in particular on the proportional application of it to other mediation contracts
title: HYFLEX BLENDED LEARNING: A GRADUATE-LEVEL CASE STUDY IN STRATEGIC EDUCATIONAL MANAGEMENT
Creators: name: Phongsak PHAKAMACH
Publisher: name: Asian Education and Learning Review
publisherIdentifierScheme: ROR
Year: 2025
Subjects: HyFlex Blended Learning
Learning Management System
Strategic Educational Management
Graduate Education
Technology-Enhanced Learning

description: Asian Education and Learning Review, 3, 2, Article 3
Understanding the Particle Production Mechanism with Correlation Studies Using Long and Short Range Correlations
Creators: name: Srivastava, B. K.
name: Scharenberg, R. P.
name: Tarnowsky, T. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Long range forward-backward multiplicity correlations have been measured with the STAR detector for Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV . Strong long range correlations are observed in central Au+Au collisions. Based on the Dual Parton model and Color Glass Condensate considerations the data suggests that these long range correlations are due to multiple parton interactions. This suggests that dense partonic matter is created in central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV.
description: 6 pages, 4 figures, QM06 poster, Shanghai, China, Nov. 14-20, 2006
Η αποτελεσματικότητα ενός προγράμματος δημιουργικού χορού στην καρδιαγγειακή αντοχή και το χρόνο απόκρισης μαθητών/τριών πρωτοβάθμιας εκπαίδευσης
Creators: name: Ντάγκα, Ιωάννα Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Δημιουργικός χορός
Καρδιαγγειακή Αντοχή
Χρόνος Απόκρισης
Creative Dance
Response Time
Cardiovascular Endurance

description: Ο σκοπός της παρούσας μελέτης ήταν η ανίχνευση της αποτελεσματικότητας ενός προγράμματος δημιουργικού χορού, βασισμένο στο πρόγραμμα της Gilbert (2015), στην καρδιαγγειακή αντοχή και το χρόνο απόκρισης μαθητών -τριών της πρωτοβάθμιας εκπαίδευσης, και συγκεκριμένα των τάξεων της Α΄ και Β΄ Δημοτικού. Στην έρευνα έλαβαν μέρος 67 παιδιά (37 αγόρια, 30 κορίτσια) ηλικίας από 6 έως 8 ετών. Από το σύνολο του δείγματος, τα 33 παιδιά αποτέλεσαν την ομάδα παρέμβασης, τα οποία παρακολούθησαν ένα πρόγραμμα δημιουργικού χορού διάρκειας 8 εβδομάδων, με συχνότητα 3 φορές την εβδομάδα για 40 λεπτά ανά μάθημα. Τα υπόλοιπα 34, αποτέλεσαν την ομάδα ελέγχου, τα οποία παρακολούθησαν το πρόγραμμα Φυσικής Αγωγής. Για τη μέτρηση της καρδιαγγειακής αντοχής, πριν και μετά την εφαρμογή του προγράμματος, εφαρμόστηκε το 3 min Step Test, ενώ για την μέτρηση του χρόνου απόκρισης το reaction test της KΑPA-INVENT. Σύμφωνα με τα αποτελέσματα της έρευνας δεν εμφανίστηκαν σημαντικές διαφορές πριν και μετά την εφαρμογή του προγράμματος δημιουργικού χορού σε σχέση με την αντοχή. Σε ότι αφορά το χρόνο απόκρισης παρουσιάστηκε σημαντική βελτίωση στην ομάδα παρέμβασης μετά την εφαρμογή του προγράμματος. Το συμπέρασμα της εργασίας αυτής είναι ότι ένα πρόγραμμα δημιουργικού χορού έχει θετική επίδραση στο χρόνο απόκρισης των παιδιών όχι όμως και στην αντοχή
description: The purpose of this study was to investigate the effectiveness of a creative dance program based on the Gilbert (2015) program, on cardiovascular endurance and response time of primary school pupils, in particular grades 1 and 2 of primary school. 67 children (37 boys, 30 girls) aged 6 to 8 took part in the survey. Out of the sample, the 33 children were the intervention team, attending an 8-week creative dance program, with a frequency of 3 times per week for 40 minutes per lesson. The remaining 34 were the control group who attended the Physical Education program. For the cardiovascular endurance measurement, before and after the program was applied the 3min Step Test while the reaction test of KΑPA-INVENT was used to measure the response time. According to the results of the survey, there were no significant differences before and after the implementation of the creative dance program in relation to endurance. As far as the response time is concerned, there was a significant improvement in the intervention team after the implementation of the program. The conclusion of this study is that a creative dance program has a positive effect on children's response time, but not on endurance
Quantum algorithm for the classification of Supersymmetric top quark events
Creators: name: Bargassa, P.
name: Cabos, T.
name: Cavinato, S.
name: Choi, A. Cordeiro Oudot
name: Hessel, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The search for supersymmetric particles is one of the major goals in the next high luminosity phase of the Large Hadron Collider. Supersymmmetric top (stop) searches play a very important role in this respect, but the unprecedented collision rate that will be attained at this phase poses new challenges for the separation between any new signal and the Standard Model background. While classical multivariate techniques might be insufficient in this new environment, the massive parallelism provided by quantum computing techniques may yield an efficient solution for the problem. In this paper we make a novel application of the QAML-Z approach to classify the stop signal versus the background, and implement it in a quantum annealer machine. We show that this approach together with the pre-processing of the data with Principal Component Analysis may yield better results than conventional multivariate approaches.
Αυτισμός και μικροβίωμα εντέρου
Creators: name: Παπαχριστοδούλου, Μαριάννα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αυτισμός
Μικροβίωμα εντέρου
Μικροχλωρίδα εντέρου
Autism
Gut microbiome
Gut microbiota

description: Ο αυτισμός είναι μια νευροαναπτυξιακή διαταραχή που χαρακτηρίζεται από ανεπάρκεια στην κοινωνική αλληλεπίδραση και στερεοτυπική συμπεριφορά. Ο αυτισμός προκαλείται από αλληλεπιδράσεις μεταξύ γενετικών και περιβαλλοντικών παραγόντων. Η ανάπτυξη αυτισμού μπορεί επίσης να συνδεθεί με μεταβολικές διαταραχές του γαστρεντερικού συστήματος. Η μικροβιακή ανισορροπία μπορεί να προκαλέσει σημαντικές ψυχιατρικές διαταραχές - αυτισμό. Πιο πρόσφατες μελέτες έδειξαν ότι ο αυτισμός συνοδεύεται με αλλαγές στο μικροβίωμα. Μελέτες υπόσχονται να δείξουν τον σημαντικό ρόλο του μικροβιώματος στην παθογένεια του αυτισμού. Ο σκοπός αυτής της έρευνας είναι να εξηγήσει πως ο αυτισμός συσχετίζεται με την σύνθεση της εντερικής μικροβιακής χλωρίδας
description: Autism is a neurodevelopmental disorder characterized by a meaningful level of insufficiency in social interaction and stereotypical behavior. The disorder is considered to be caused by interactions between genetic and environmental factors. The development of autism may also be connected to metabolic disorder of the gastrointestinal system. Microbial imbalance can give rise to major psychiatric disorders - autism. Most recently studies demonstrated that autism is associated with modified microbiota. Studies provide promising evidence indicating an important role for the gut microbiota in the pathogens of autism. The aim of the research is to explain the way autism is associated to the composition of gut microbiota
title: The politics of engagement : diaspora and religious actors' involvement in the Liberian peace process
Creators: name: Afolabi, Babatunde Tolu
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2015

description: This dissertation examines the involvement of Liberia's religious and diaspora groups in the peace process that ended the 14-year Liberian Civil War (1989-2003). Its aims include determining the extent of, the rationale for, as well as the effects of the involvement of Liberia's religious and diaspora groups in the peacemaking efforts that were undertaken in the course of the Liberian conflict. While findings show that a multiplicity of factors were responsible for the eventual resolution of the protracted conflict, they also reveal that the action of both religious and diaspora actors influenced the trajectory of the conflict and the outcome of the peace process. The religious actors, being the initiators of the Liberian peace process, played such roles as mediators, dialogue facilitators, watchdogs and trustees of the entire process. Although their efforts were mainly influenced by the desire to fulfil the divine mandate to 'tend to the flock', achievable only in a peaceful and stable environment, religious actors' peacemaking roles also presented an opportunity to regain some of the societal influence that organized religion, especially Christianity, enjoyed during the 158 years of minority 'Americo-Liberian' rule. For diaspora actors, whose roles ranged from being founders and sponsors of warring factions, to providing succour to Liberians back home through remittances, and subsequently engaging the peace process, attaining political power through the barrel of the gun or through peaceful means served the same purpose. In achieving the dissertation's aims, a historical analysis of Liberia's socio-political environment is undertaken. Also examined are the roles played by various international, regional and national actors, either as peacemakers or as sponsors of various warring factions engaged in hostilities, as well as relevant theories or paradigms such as Conflict Transformation, Social Capital and Liberal Peace. This empirical study employed the means of qualitative research methods, obtaining primary data through interviews conducted in Liberia, Ghana, the USA and Nigeria.
Δημοκρατία και διαδίκτυο: Η περίπτωση της απαγόρευσης χρήσης των Μέσων Κοινωνικής Δικτύωσης στην Τουρκία
Creators: name: Koutsoupias, Nikos
name: Koptsi, Anastasia
Publisher: name: Zenodo
Year: 2015

description: Στην παρούσα μελέτη θα ερευνηθούν οι αφετηρίες, οι φόβοι και τα αίτια που ωθούνκαθεστώτα αυταρχικά ή λιγότερο ημι-­‐δημοκρατικά να βάλουν τροχοπέδη στο διαδίκτυο καιστην ελεύθερη έκφραση των χρηστών του. Θα ερευνηθεί επίσης ο τρόπος με τον οποίοεπιτυγχάνεται η άσκηση ελέγχου επί του διαδικτύου από τις κυβερνήσεις.Συγκεκριμένα θα εξεταστεί η περίπτωση της Τουρκίας μέσα από τα γεγονότα πουεξελίχθηκαν κατά το κίνημα του Γκεζί και επέφεραν την απαγόρευση του YouTube και τουTwitter. Θα περιγραφούν τα γεγονότα που διαδραματίστηκαν και η αντίδραση τηςεπίσημης πολιτείας. Στη συνέχεια θα γίνει έρευνα σε επιλεγμένες ιστοσελίδες (Γερμανίας,Ελλάδας, Η.Π.Α, Τουρκίας) για να ερευνηθεί ο τρόπος που αντιμετωπίζει κάθε μία από τιςχώρες αυτές τη φίμωση των Μέσων Κοινωνικής Δικτύωσης. Έτσι θα ερευνηθεί και θαεξακριβωθεί η Δημοκρατία των Μέσων στις συγκεκριμένες χώρες.Επιλέχθηκε η Τουρκία, γιατί η αδυναμία εδραίωσης της δημοκρατίας επέφερε και τηνκυβερνητική παρέμβαση στο διαδικτυακό περιεχόμενο. Η κυβέρνηση νομοθέτησε κατά τηςελευθερίας του διαδικτύου και απαγόρευσε την πρόσβαση στις θεμελιώδεις υπηρεσίες τουYouTube και του Twitter. Ο σχετικός νόμος ψηφίστηκε στο τουρκικό Κοινοβούλιο καιεπέτρεπε στην Αρχή Τηλεπικοινωνιών να μπλοκάρει οποιαδήποτε ιστοσελίδα μέσα σεδιάστημα τεσσάρων ωρών χωρίς να προηγηθεί δικαστική εντολή.Προκειμένου να εξαχθούν συμπεράσματα για τον τρόπο κάλυψης της εξέγερσης στηνΤουρκία, θα επιλεγεί ένα διάστημα 30 ημερών, κατά το οποίο κορυφώθηκαν τα επεισόδια.Θα χρησιμοποιηθούν οι μεταβλητές: αριθμός δημοσιευμάτων, είδος (άρθρα/ ρεπορτάζ/συνεντεύξεις, ανάλυση τίτλων, ανάλυση κειμένου χρήση αρνητικά/θετικά φορτισμένωνλέξεων, ύφος, χρήση εικόνας και βίντεο).Θα αξιοποιηθεί η ανάλυση περιεχομένου για τη διερεύνηση των ποιοτικώνχαρακτηριστικών στα δεδομένα, ενώ θα εργαστούμε και με τις μεθόδους ΑνάλυσηςΔεδομένων για την αναζήτηση και ερμηνεία λανθανόντων δομών και αλληλεξαρτήσεων στοσυγκεκριμένο φαινόμενο αντιδημοκρατικής πρακτικής. Από την παρούσα έρευνα θαδιαπιστωθούν οι διαφοροποιήσεις των διάφορων Μέσων Κοινωνικής Δικτύωσης όσοναφορά στον τρόπο κάλυψης των γεγονότων, αλλά και στη φίμωση των Μέσων ΚοινωνικήςΔικτύωσης της Τουρκίας.

 

8ο Πανελλήνιο Συνέδριο Ανάλυσης Δεδομένων με Διεθνή Συμμετοχή, Αλεξανδρούπολη 2015

Τομος Περιλήψεων
Constraints on general neutrino interactions with exotic fermion from neutrino-electron scattering experiments
Creators: name: Chen, Zikang
name: Li, Tong
name: Liao, Jiajun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The couplings between the neutrinos and exotic fermion can be probed in both neutrino scattering experiments and dark matter direct detection experiments. We present a detailed analysis of the general neutrino interactions with an exotic fermion and electrons at neutrino-electron scattering experiments. We obtain the constraints on the coupling coefficients of the scalar, pseudoscalar, vector, axialvector, tensor and electromagnetic dipole interactions from the CHARM-II, TEXONO and Borexino experiments. For the flavor-universal interactions, we find that the Borexino experiment sets the strongest bounds in the low mass region for the electromagnetic dipole interactions, and the CHARM-II experiment dominates the bounds for other scenarios. If the interactions are flavor dependent, the bounds from the CHARM-II or TEXONO experiment can be avoided, and there are correlations between the flavored coupling coefficients for the Borexino experiment. We also discuss the detection of sub-MeV DM absorbed by bound electron targets and illustrate that the vector coefficients preferred by XENON1T data is allowed by the neutrino experiments.
description: 18 pages, 5 figures, 1 table. Version published in JHEP
Electronic Structure of gated graphene and graphene ribbons
Creators: name: Fernandez-Rossier, J.
name: Palacios, J. J.
name: Brey, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the electronic structure of gated graphene sheets. We consider both infinite graphene and finite width ribbons. The effect of Coulomb interactions between the electrically injected carriers and the coupling to the external gate are computed self-consistently in the Hartree approximation. We compute the average density of extra carriers, $n_{2D}$, the number of occupied subbands and the density profiles as a function of the gate potential $V_g$. We discuss quantum corrections to the classical capacitance and we calculate the threshold $V_g$ above which semiconducting armchair ribbons conduct. We find that the ideal conductance of perfectly transmitting wide ribbons is proportional to the square root of the gate voltage.
description: 8 pages, 6 figures