cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the entanglement concentration of three-partite states
Creators: name: Groisman, Berry
name: Linden, Noah
name: Popescu, Sandu
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the concentration of multi-party entanglement by focusing on simple family of three-partite pure states, superpositions of Greenberger-Horne-Zeilinger states and singlets. Despite the simplicity of the states, we show that they cannot be reversibly concentrated by the standard entanglement concentration procedure, to which they seem ideally suited. Our results cast doubt on the idea that for each N there might be a finite set of N-party states into which any pure state can be reversibly transformed. We further relate our results to the concept of locking of entanglement of formation.
description: 8 pages, 3 figures
The Documentary of COIVD19 Education Journey (The Scenario to the Further Scene of Education).pdf
Creators: name: Sarbunan, Thobias
Publisher: name: figshare
Year: 2021
Subjects: subject: 130199 Education systems not elsewhere classified
subject: FOS: Educational sciences
subject: Education
subject: 130105 Primary Education (excl. Maori)
subject: 209999 Language, Communication and Culture not elsewhere classified
subject: FOS: Languages and literature
subject: Language
subject: 200303 English as a Second Language

description: To the present day, Covid19 has become the star of phenomena. Many of the
gaps in education, colourful stories, have emerged as a consequence of the
pandemic education; research and innovation as the eyes of the educational
body; on the one side, modern countries have been successful in pandemic
education, but sad stories come from developing countries, and
underdevelopment countries have been terrified by pandemic education until
I have written this article. Thousands of papers on science and innovation
have had a significant effect on scientific results, but this is just a snapshot of
a narrative on the distorted trajectory of pandemic education. However, indepth analyses of whether and how to continue education in the midst of the
pandemic also had an impact on the pandemic education. In addition; digital,
internet, synchronized, Asynchronies, distance learning, remote learning has
been used as an approach that underpins the policies of each country's
current global circumstances. Technology, social and humanities are in the
process of research and have shown a measurable path for pandemic
education. The primary focus of pandemic education research was
meaningful visionary education; what, when, where, or which measurable
approach [is and would be] to solve local and global challenges. So, through
this article, I conducted narratively to leverage educational society insight in
order to achieve a visionary education system. I concluded that visionary
education would establish significant education from a local and global
viewpoint
Additional file 1 of Polysubstance mortality trends in White and Black Americans during the opioid epidemic, 1999–2018
Creators: name: Rawy, Marwa
name: Abdalla, Gergis
name: Look, Kevin
Publisher: name: figshare
Year: 2024
Subjects: Biophysics
Medicine
Neuroscience
Pharmacology
Biotechnology
Science Policy
Mental Health
Computational Biology

description: Additional file.
Two loop effective kaehler potential of (non-)renormalizable supersymmetric models
Creators: name: Nibbelink, Stefan Groot
name: Nyawelo, Tino S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a supergraph computation of the effective Kaehler potential at one and two loops for general four dimensional N=1 supersymmetric theories described by arbitrary Kaehler potential, superpotential and gauge kinetic function. We only insist on gauge invariance of the Kaehler potential and the superpotential as we heavily rely on its consequences in the quantum theory. However, we do not require gauge invariance for the gauge kinetic functions, so that our results can also be applied to anomalous theories that involve the Green-Schwarz mechanism. We illustrate our two loop results by considering a few simple models: the (non-)renormalizable Wess-Zumino model and Super Quantum Electrodynamics.
description: 1+26 pages, LaTeX, 6 figures; a missing diagram added and typos corrected
Are the Moon's nearside-farside asymmetries the result of a giant impact?
Creators: name: Zhu, Meng-Hua
name: Wunnemann, Kai
name: Potter, Ross W. K.
name: Kleine, Thorsten
name: Morbidelli, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Moon exhibits striking geological asymmetries in elevation, crustal thickness, and composition between its nearside and farside. Although several scenarios have been proposed to explain these asymmetries, their origin remains debated. Recent remote sensing observations suggest that (1) the crust on the farside highlands consists of two layers: a primary anorthositic layer with thickness of ~30-50 km and on top a more mafic-rich layer ~10 km thick; and (2) the nearside exhibits a large area of low-Ca pyroxene that has been interpreted to have an impact origin. These observations support the idea that the lunar nearside-farside asymmetries may be the result of a giant impact. Here, using quantitative numerical modeling, we test the hypothesis that a giant impact on the early Moon can explain the striking differences in elevation, crustal thickness, and composition between the nearside and farside of the Moon. We find that a large impactor, impacting the current nearside with a low velocity, can form a mega-basin and reproduce the characteristics of the crustal asymmetry and structures comparable to those observed on the current Moon, including the nearside lowlands and the farside's mafic-rich layer on top of a primordial anorthositic crust. Our model shows that the excavated deep-seated KREEP (potassium, rare-earth elements, and phosphorus) material, deposited close to the basin rim, slumps back into the basin and covers the entire basin floor; subsequent large impacts can transport the shallow KREEP material to the surface, resulting in its observed distribution. In addition, our model suggests that prior to the asymmetry-forming impact, the Moon may have had an 182W anomaly compared to the immediate post-giant impact Earth's mantle, as predicted if the Moon was created through a giant collision with the proto-Earth.
description: 45 pages, 12 figures
Η ενσωμάτωση της σύμβασης του Ααρχους (Aarhus) στο κοινοτικό δίκαιο και η εξέλιξη του κοινοτικού περιβαλλοντικού δικαίου
Creators: name: Γαρυφάλλου, Γεώργιος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Σύμβαση του Ααρχους
Κοινοτικό δίκαιο
Δίκαιο Προστασίας Περιβάλλοντος
Δικαίωμα πρόσβασης σε πληροφορίες
Δικαίωμα συμμετοχής στη λήψη αποφάσεων
Δικαίωμα πρόσβασης στη δικαιοσύνη
Aarhus convention
European community law
Environmental Protection Law
Right of Access to information
Right of participation to decision making
Right of access to justice

description: Η ανάγκη εναρμόνισης του δευτερογενούς περιβαλλοντικού δικαίου με τη σύμβαση του Ααρχους οδήγησε στην έκδοση μιας σειράς νομοθετικών πράξεων εκ μέρους της Ευρωπαϊκής Κοινότητας που δεν βελτίωσαν παρά οριακά την προϊσχύουσα ευρωπαϊκή και εθνική νομοθεσία, στους τομείς της πρόσβασης των πολιτών οι πληροφορίες, στη συμμετοχή στις διαδικασίες λήψης αποφάσεων και στην πρόσβαση στη διαδικασία για περιβαλλοντικά θέματα
description: In order to harmonize the community environmental law with the Aarchus Convention the European Community issued a number of legal decrees. Despite that effort the new legislation has only marginally improved the preexisting european and national legislation concerning the access of public to information, participation in decision making and access to justice for environmental matters
Μοντελοποίηση, προσομοίωση και μελέτη της απόδοσης, κατανεμημένου συστήματος πραγματικού χρόνου, με πιθανά σφάλματα λογισμικού
Creators: name: Μαλιούφα, Αικατερίνη Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Προσομοίωση
Κατανεμημένο σύστημα
Απόδοση συστήματος
Σύστημα πραγματικού χρόνου
Simulation
Distributed systems
Real time systems
Performance

description: Η εργασία αφορά στην μελέτη και ανάπτυξη προγράμματος, σχετικά με την απόδοση ενός κατανεμημένου συστήματος πραγματικού χρόνου, στο οποίο μπορεί να συμβούν σφάλματα λογισμικού. Το συγκεκριμένο σύστημα προσομοιώθηκε χρησιμοποιώντας τη γλώσσα C++
description: This study is about the perfomance of a distributed real time system with possible software faults. This system was simulated using the programming language C++
A coarse-grained electrothermal model for organic semiconductor devices
Creators: name: Glitzky, Annegret
name: Liero, Matthias
name: Nika, Grigor
Publisher: name: Weierstrass Institute
Year: 2021
Subjects: subject: Drift-diffusion
subject: charge heat transport
subject: electrothermal interaction
subject: organic semiconductor
subject: coarse-grained model
subject: weak solutions
subject: 35J57
subject: 35K05
subject: 78A35

description: We derive a coarse-grained model for the electrothermal interaction of organic semiconductors. The model combines stationary drift-diffusion based electrothermal models with thermistor type models on subregions of the device and suitable transmission conditions. Moreover, we prove existence of a solution using a regularization argument and Schauder's fixed point theorem. In doing so, we extend recent work by taking into account the statistical relation given by the Gauss--Fermi integral and mobility functions depending on the temperature, charge-carrier density, and field strength, which is required for a proper description of organic devices.
A Spitzer Space Telescope Atlas of omega Centauri: The Stellar Population, Mass Loss, and the Intracluster Medium
Creators: name: Boyer, Martha L.
name: McDonald, Iain
name: van Loon, Jacco Th.
name: Woodward, Charles E.
name: Gehrz, Robert D.
name: Evans, A.
name: Dupree, A. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a Spitzer Space Telescope imaging survey of the most massive Galactic globular cluster, omega Centauri, and investigate stellar mass loss at low metallicity and the intracluster medium (ICM). The survey covers approximately 3.2x the cluster half-mass radius at 3.6, 4.5, 5.8, 8, and 24 microns, resulting in a catalog of over 40,000 point-sources in the cluster. Approximately 140 cluster members ranging 1.5 dex in metallicity show a red excess at 24 microns, indicative of circumstellar dust. If all of the dusty sources are experiencing mass loss, the cumulative rate of loss is estimated at 2.9 - 4.2 x 10^(-7) solar masses per year, 63% -- 66% of which is supplied by three asymptotic giant branch stars at the tip of the Red Giant Branch (RGB). There is little evidence for strong mass loss lower on the RGB. If this material had remained in the cluster center, its dust component (> 1 x 10^(-4) solar masses) would be detectable in our 24 and 70 micron images. While no dust cloud located at the center of omega Cen is apparent, we do see four regions of very faint, diffuse emission beyond two half-mass radii at 24 microns. It is unclear whether these dust clouds are foreground emission or are associated with omega Cen. In the latter case, these clouds may be the ICM in the process of escaping from the cluster.
description: 20 pages, 18 figures, 8 tables, accepted for publication in AJ
A perspective on semiconductor-based superconducting qubits
Creators: name: Aguado, Ramón
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Following the demonstration of semiconductor-based Josephson junctions which are fully tuneable by electrical means, new routes have been opened for the study of hybrid semiconductor-superconductor qubits. These include semiconductor-based transmon qubits, single-spin Andreev qubits, and fault-tolerant topological qubits based on Majorana zero modes. In this perspective, we review recent progress in the path towards such novel qubit designs. After a short introduction and a brief digression about the historical roadmap that has led to the experimental state-of-the art, the emphasis is placed on superconducting qubits based on semiconductor nanowires
description: 11 pages, 3 figures. Invited perspective for Applied Physics Letters
Rough translation of file 035_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-300120-12: Rough translation (minute-by-minute) of 035_A (tape 035, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from the beginning of the file to 6:58. Due to re-numbering, tape 035_A has been assigned to the CLA item number LA256.035, audio file LA256.035A.
Multiferroic behavior in CdCr2X4 (X = S, Se)
Creators: name: Hemberger, J.
name: Lunkenheimer, P.
name: Fichtl, R.
name: Weber, S.
name: Tsurkan, V.
name: Loidl, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The recently discovered multiferroic material CdCr2S4 shows a coexistence of ferromagnetism and relaxor ferroelectricity together with a colossal magnetocapacitive effect. The complex dielectric permittivity of this compound and of the structurally related CdCr2Se4 was studied by means of broadband dielectric spectroscopy using different electrode materials. The observed magnetocapacitive coupling at the magnetic transition is driven by enormous changes of the relaxation dynamics induced by the development of magnetic order.
Negative phase velocity in isotropic dielectric-magnetic mediums via homogenization
Creators: name: Mackay, Tom G.
name: Lakhtakia, Akhlesh
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on a strategy for achieving negative phase velocity (NPV) in a homogenized composite medium (HCM) conceptualized using the Bruggeman formalism. The constituent material phases of the HCM do not support NPV propagation. The HCM and its constituent phases are isotropic dielectric-magnetic mediums; the real parts of their permittivities/permeabilities are negative-valued whereas the real parts of their permeabilities/permittivities are positive-valued.
Spin Polarization and Dichroism Effects by Electric Field
Creators: name: Hu, Jiangping
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that electric field can induce spin polarization and dichroism effects in angle resolved photoemission spectroscopy (ARPES) in spin orbit coupling systems. The physical origin behind the effects essentially is the same as the spin Hall effect induced by the electric field. Since the ARPES experiments have both energy and momentum resolutions, the spin Hall effect can be directly verified by the ARPES experiments for individual band even if there is no net spin current.
BENTHIC FORAMINIFERA RESPONSE TO METHANE RELEASE INAN ADRIATIC SEA POCKMARK
Creators: name: PANIERI, GIULIANA
Publisher: name: Università degli Studi di Milano
Year: 2003

description: The presence of methane-bearing shallow sediments in the Adriatic Sea has been known since the fifties, but little is known about the benthic foraminiferal assemblages associated with them. One seep and two control cores were collected in the Bonaccia field (central Adriatic Sea) at a water depth of 80 m to investigate the possible influence of the release of gas from marine reservoirs on these foraminiferal assemblages. The seep core was drilled inside a pockmark in the vicinity of an active mud-volcano. Two control cores were collected in nearby areas unaffected by presence of methane. Benthic foraminiferal assemblages from the seep core are comparable to those from the seep-free cores and are composed of species common in the central Adriatic Sea. However, foraminiferal density in the seep-core is remarkably lower than in the control ones cores. Besides, calcitic foraminiferal tests from the seep core revealed unusual trends in stable carbon isotope composition. Even though not within the same range, a similar trend was observed throughout the seep core for the ä13C values of Gavelinopsis lobatulus, Cassidulina carinata, and Bulimina marinata. In particular, negative carbon isotope values were recorded for Gavelinopsis lobatulus at the top of the core where methane seeps were detected and deep inside the core sediments (50 cm). These findings seem to point to temporal variations in seep activity, proving that the ä13C values of foraminiferal tests reflect hydrocarbon release and may hence be used to reconstruct seep activity history.
• Table 1 (all.): Number of benthic foraminifera from GAB1core samples
• Table 2 (all.): Foraminiferal percent of the total benthic foraminiferal fauna from GAB1 core samples
• Table 3 (all.): Number of benthic foraminifera from GAB2 core samples.
• Table 4 (all.): Foraminiferal percent of the total benthic foraminiferal fauna from GAB2 core samples.
• Table 5 (all.): Number of benthic foraminifera from GAB3 core samples.
• Table 6 (all.): Foraminiferal percent of the total benthic foraminiferal fauna from GAB3 core samples.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 109, No 3
Discovering Closed and Maximal Embedded Patterns from Large Tree Data
Creators: name: Wu, Xiaoying
name: Theodoratos, Dimitri
name: Mamoulis, Nikos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: We address the problem of summarizing embedded tree patterns extracted from large data trees. We do so by defining and mining closed and maximal embedded unordered tree patterns from a single large data tree. We design an embedded frequent pattern mining algorithm extended with a local closedness checking technique. This algorithm is called {\em closedEmbTM-prune} as it eagerly eliminates non-closed patterns. To mitigate the generation of intermediate patterns, we devise pattern search space pruning rules to proactively detect and prune branches in the pattern search space which do not correspond to closed patterns. The pruning rules are accommodated into the extended embedded pattern miner to produce a new algorithm, called {\em closedEmbTM-prune}, for mining all the closed and maximal embedded frequent patterns from large data trees. Our extensive experiments on synthetic and real large-tree datasets demonstrate that, on dense datasets, {\em closedEmbTM-prune} not only generates a complete closed and maximal pattern set which is substantially smaller than that generated by the embedded pattern miner, but also runs much faster with negligible overhead on pattern pruning.
On the Hydrodynamic Interaction of Shock Waves with Interstellar Clouds. II. The Effect of Smooth Cloud Boundaries on Cloud Destruction and Cloud Turbulence
Creators: name: Nakamura, Fumitaka
name: McKee, Christopher F.
name: Klein, Richard I.
name: Fisher, Robert T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The effect of smooth cloud boundaries on the interaction of steady planar shock waves with interstellar clouds is studied using a high-resolution local AMR technique with a second-order accurate axisymmetric Godunov hydrodynamic scheme. A 3D calculation is also done to confirm the results of the 2D ones. We consider an initially spherical cloud whose density distribution is flat near the cloud center and has a power-law profile in the cloud envelope. When an incident shock is transmitted into a smooth cloud, velocity gradients in the cloud envelope steepen the smooth density profile at the upstream side, resulting in a sharp density jump having an arc-like shape. Such a ``slip surface'' forms immediately when a shock strikes a cloud with a sharp boundary. For smoother boundaries, the formation of slip surface and therefore the onset of hydrodynamic instabilities are delayed. Since the slip surface is subject to the Kelvin-Helmholtz and Rayleigh-Taylor instabilities, the shocked cloud is eventually destroyed in $\sim 3-10$ cloud crushing times. After complete cloud destruction, small blobs formed by fragmentation due to hydrodynamic instabilities have significant velocity dispersions of the order of 0.1 $v_b$, where $v_b$ is the shock velocity in the ambient medium. This suggests that turbulent motions generated by shock-cloud interaction are directly associated with cloud destruction. The interaction of a shock with a cold HI cloud should lead to the production of a spray of small HI shreds, which could be related to the small cold clouds recently observed by Stanimirovic & Heiles (2005). The linewidth-size relation obtained from our 3D simulation is found to be time-dependent. A possibility for gravitational instability triggered by shock compression is also discussed.
description: 62 pages, 16 figures, submitted to ApJ
A PLIOSAURID TOOTH FROM THE ARGILLE VARICOLORI FORMATION NEAR CASTELVECCHIO DI PRIGNANO (MODENA PROVINCE, NORTHERN ITALY)
Creators: name: A. PAPAZZONI, CESARE
Publisher: name: Università degli Studi di Milano
Year: 2003

description: The first discovery of a Cretaceous pliosaurid tooth in Italy is reported. It comes from the Cenomanian-lower Campanian Argille Varicolori Formation near Castelvecchio di Prignano (Modena Province, northern Italy). Excepting this new specimen, Italy's only reported pliosaurid is a humerus from the Upper Cretaceous of Zavattarello near Pavia. The tooth morphology allows it to be ascribed to Polyptychodon interruptus Owen, 1841, a species only reported thus far from northern-central Europe (England, Germany, and the Czech Republic). This suggests the presence of marine reptile remains in the northern Apennines may have been underestimated.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 109, No 3
Hamiltonian approach to Yang-Mills theory in Coulomb gauge
Creators: name: Reinhardt, H.
name: Epple, D.
name: Schleifenbaum, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent results obtained within the Hamiltonian approach to continuum Yang-Mills theory in Coulomb gauge are reviewed.
description: 7 pages, 2 figures, to appear in the ``Quark Confinement and the hadron spectrum VII'' (Portugal 2006) conference proceedings
A situação socioeconômica dos roma na Romênia
Creators: name: Oppermann, Daniel
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 500104
subject: Human rights and justice issues (excl. law)
classificationCode: 390201
subject: Education policy
classificationCode: 390203
subject: Sociology of education
classificationCode: 440107
subject: Social and cultural anthropology
classificationCode: 441004
subject: Social change
classificationCode: 441008
subject: Sociology of culture
classificationCode: 441011
subject: Sociology of health
classificationCode: 441012
subject: Sociology of inequalities
classificationCode: 441013
subject: Sociology of migration, ethnicity and multiculturalism
classificationCode: 441016
subject: Urban sociology and community studies

description: Desde o início do processo de transformação democrática na Europa Oriental nos anos 90, governos, organizações internacionais e a sociedade civil têm olhado cada vez mais para a situação dos Roma na Europa. Este grupo populacional, que migrou da Ásia para a Europa séculos atrás e por muito tempo viveu como nômades, agora vive em vários países do continente europeu e em outras partes do mundo como grupo pós-migratório. No contexto da aproximação com a União Europeia, vários países analisaram a situação dos Roma e tentaram melhorar suas condições de vida, muitas vezes precárias. Este artigo analisa a situação socioeconômica dos Roma na Romênia desde o final da Guerra Fria. Com a ajuda de uma análise bibliográfica, a situação dos Roma é discutida, com um foco especial em educação, trabalho, moradia e assistência médica.
Κρυπτοσυστήματα ελλειπτικών καμπυλών τύπου RSA
Creators: name: Τούρα, Βαρβάρα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Κρυπτογραφία ελλειπτικών καμπυλών
Κρυπτοσυστήματα ελλειπτικών καμπυλών τύπου Rsa
Μέθοδος παραγοντοποιησης του Lenstra
Κρυπτοσύστημα KMOV
Κρυπτοσύστημα Demytko
Elliptic Curve Cryptography RSA-type Cryptosystems over Elliptic Curves
Lenstra's Factorization Method
KMOV Cryptosystem
Demytko's Cryptosystem

description: Η παρούσα εργασία έχει ως αντικείμενο μελέτης την κρυπτογραφία ελλειπτικών καμπυλών. Πιο συγκεκριμένα, αναφέρεται στην παραγοντοποίηση ακέραιων αριθμών κάνοντας χρήση των ελλειπτικών καμπύλων και εστιάζει στον αλγόριθμο του Lenstra. Επίσης παρουσιάζει, δύο κρυπτοσυστήματα που βασίζονται στο Rsa τα σχήματα Kmov και Demytko αναλύοντας το και συγκρίνοντάς τα με αυτό
description: In the particular thesis the subject of the research is the study of elliptic curve cryptography. More specifically, it refers to the factorization of integer numbers by using elliptic curves and it focuses on Lenstra's algorithm. Furthermore, it presents two RSA-type cryptosystems - the schemes KMOV and Demytko - by analyzing and comparing them with RSA.
Heavy quark diffusion in QCD and N=4 SYM at next-to-leading order
Creators: name: Caron-Huot, Simon
name: Moore, Guy D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the full details of a calculation at next-to-leading order of the momentum diffusion coefficient of a heavy quark in a hot, weakly coupled, QCD plasma. Corrections arise at O(g_s); physically they represent interference between overlapping scatterings, as well as soft, electric scale (p ~ gT) gauge field physics, which we treat using the hard thermal loop (HTL) effective theory. In 3-color, 3-flavor QCD, the momentum diffusion constant of a fundamental representation heavy quark at NLO is kappa = (16π/3) alpha_s^2 T^3 (log(1/g) + 0.07428 + 1.9026 g). We extend the computation to a heavy fundamental representation ``probe'' quark in large N_c, N=4 Super Yang-Mills theory, where the result is kappa^{SYM}= (lambda^2 T^3)(6π) (log(1/\sqrtλ) + 0.4304 + 0.8010 \sqrt{lambda}) (where lambda=g_s^2 N_c is the t'Hooft coupling). In the absence of some resummation technique, the convergence of perturbation theory is poor.
description: 40 pages, 14 figures
Models and corrections: range separation for electronic interaction -- lessons from density functional theory
Creators: name: Savin, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Model Hamiltonians with long-range interaction yield energies that are corrected taking into account the universal behavior of the electron-electron interaction at short range. Although the intention of the paper is to explore the foundations of using density functionals combined with range separation, the approximations presented can be used without them, as illustrated by a calculation on Harmonium. In the regime when the model system approaches the Coulomb system, they allow the calculation of ground states, excited states, and properties, without making use of the Hohenberg-Kohn theorem. Asymptotically, the technique is improvable, allows for error estimates that can validate the results. Some considerations for correcting the errors of finite basis sets in this spirit are also presented. Being related to the present understanding of density functional approximations, the results are comparable to those obtained with the latter, as long as these are accurate.
Description of longitudinal modes in moderately coupled Yukawa systems with the static local field correction
Creators: name: Tolias, P.
name: Castello, F. Lucco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In moderately coupled Yukawa fluids, longitudinal mode dispersion is determined by the competition between kinetic and potential effects. In a recent paper [Khrapak and Couëdel, Phys. Rev. E 102, 033207 (2020)], a semi-phenomenological dispersion relation was constructed by the ad-hoc addition of the Bohm-Gross kinetic term to the generalized instantaneous excess bulk modulus, which showed very good agreement with simulations. In this paper, a nearly identical dispersion relation is derived in a rigorous manner based on a dielectric formulation with static local field corrections. At moderate coupling, this formalism is revealed to be more accurate than other successful theoretical approaches.
description: 6 pages, 3 figures
METAXYTHERIUM MEDIUM (MAMMALIA: SIRENIA) FROM UPPER MIOCENE SEDIMENTS OF THE ARENARIA DI PONSANO FORMATION (TUSCANY, ITALY)
Creators: name: BIANUCCI, GIOVANNI
name: LANDINI, WALTER.
Publisher: name: Università degli Studi di Milano
Year: 2003

description: Records of Metaxytherium medium (Mammalia: Sirenia) from Tononian (Late Miocene) sediments from che Arenaria di Ponsano Formation (Tuscany, Italy) are described. They consist of fragmentary specimens, including several partial cranial elements representing at least three skulls, two humeri, fragments of venebrae and some incomplete ribs. The new Tuscan records confirm che wide diffusion of Metaxytherium in the Mediterranean during the Miocene. This sirenian's occurrence in the Arenaria di Ponsano sediments is in accordance with the shelf environment indicated by other fossils. The low sea bottom was at least partially covered by segrass meadows, the food source of this dugongid.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 109, No 3
EOSTYLOCEROS CF. PIDOPLITSCHKOI KOROTKEVITSCH 1964 (CERVIDAE, MUNTIACINAE): NEW ELEMENT IN THE NEOGENE MAMMAL ASSEMBLAGE OF LOWER VALDARNO (TUSCANY, CENTRAL ITALY)
Creators: name: ABBAZZI, LAURA
name: CROITOR, ROMAN
Publisher: name: Università degli Studi di Milano
Year: 2003

description: An Eostyloceros antler fragment is described. The specimen makes part of the Montopoli (Lower Valdarno, Tuscany) collection preserved in the Geo-Paleontological section of the Natural History Museum of Florence. This site is the type locality of the homonymous Faunal Unit of the Italian Biochronological scheme; it includes the latest Early Villafranchian Mammal Age faunas. The occurrence of an Eostyloceros species among this material however, is in disagreement with the age of the Montopoli local fauna, which has been correlated with the Gauss-Matuyama boundary and thus dated to about 2.6 Ma. The youngest remains of this genus come from sites of eastern Europe Early Pliocene in age (Ruscinian Mammal Age). The possibility that the antler is an external element to the Montopoli assemblage is therefore contemplated.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 109, No 3
Wannier-Stark ladder in the linear absorption of a random system with scale-free disorder
Creators: name: Diaz, E.
name: Dominguez-Adame, F.
name: Kosevich, Yu. A.
name: Malyshev, V. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study numerically the linear optical response of a quasiparticle moving on a one-dimensional disordered lattice in the presence of a linear bias. The random site potential is assumed to be long-range-correlated with a power-law spectral density $S(k) \sim 1/k^α$, $α> 0$. This type of correlations results in a phase of extended states at the band center, provided $α$ is larger than a critical value $α_c$ [F. A. B. F. de Moura and M. L. Lyra, Phys. Rev. Lett. \textbf{81}, 3735 (1998)]. The width of the delocalized phase can be tested by applying an external electric field: Bloch-like oscillations of a quasiparticle wave packet are governed by the two mobility edges, playing now the role of band edges [F. Dom\'ınguez-Adame \emph{et al.}, Phys. Rev. Lett. \textbf{91}, 197402 (2003)]. We demonstrate that the frequency-domain counterpart of these oscillations, the so-called Wannier-Stark ladder, also arises in this system. When the phase of extended states emerges in the system, this ladder turns out to be a comb of doublets, for some range of disorder strength and bias. Linear optical absorption provides a tool to detect this level structure.
description: 8 pages, 6 PostScript figures, to appear in Phys. Rev. B
PREFACE
Creators: name: ABBATE, ERNESTO
name: WOLDEHAIMANOT, BERAKI
name: LIBSEKAL, YOSIEF
name: MEDHIN TECLE, TEWELDE
name: ROOK, LORENZO
Publisher: name: Università degli Studi di Milano
Year: 2004

description: Rivista italiana di Paleontologia e Stratigrafia, Supplement
GEOLOGY OF THE HOMO-BEARING PLEISTOCENE DANDIERO BASIN (BUIA REGION, ERITREAN DANAKIL DEPRESSION)
Creators: name: ABBATE, ERNESTO
name: WOLDEHAIMANOT, BERAKI
name: BRUNI, PIERO
name: FALORNI, PAOLA
name: PAPINI, MAURO
name: SAGRI, MARIO
name: GIRMAY, SIMRET
name: MEDHIN TECLE, TEWELDE
Publisher: name: Università degli Studi di Milano
Year: 2004

description: This paper deals with the geological context of the northernmost site in the East Africa Rift system which has yielded Homo erectus-like remains. They are dated ca. 1 Ma and have been found in the deltaic deposits of the Alat Formation belonging to the Dandiero group. This newly defined group crops out extensively in an elongated belt from the Gulf of Zula to the North to the Garsat area to the south. In the Buia-Dandiero area it ranges in age from the Early to the Middle Pleistocene, and incorporates six formations, from bottom up: the fluvial Bukra Sand and Gravel, the deltaic and lacustrine Alat Formation, fluvial Wara Sand and Gravel, the lacustrine Goreya Formation, the fluvio-deltaic Aro Sand and alluvial Addai Fanglomerate. This succession is bounded by two major unconformities, which separate it from the Neoproterozoic basement and from the overlaying Boulder Beds fanglomerate, and has been designated the Maebele Synthem. The latter is the result of two lacustrine transgression and regressions evidenced by two depositional sequences. The unconformities bounding the Maebele Synthem are related to the tectonic history of the basin fill and its substrate. The development of the two sequences was, instead, mainly controlled by lake level fluctuations and, hence, by climatic variations connected with the weakening and strengthening of the monsoons in the northwestern Indian ocean. The environment where the Buia Homo lived was a savannah with some scattered water pools. This environment probably extended farther north along the western coastal plain of the Red Sea, and was a preferential pathway for the dispersal of the hominids from East Africa toward Eurasia.
description: Rivista italiana di Paleontologia e Stratigrafia, Supplement
MAGNETOSTRATIGRAPHY OF THE HOMO-BEARING PLEISTOCENE DANDIERO BASIN (DANAKIL DEPRESSION, ERITREA)
Creators: name: ALBIANELLI, ANDREA
name: NAPOLEONE, GIOVANNI
Publisher: name: Università degli Studi di Milano
Year: 2004

description: Four magnetozones have been found in the 530 m thick profile of the Dandiero Group. The lower unit, the Bukra Sand and Gravel, extends in the R1 reversed magnetozone from 150 m below the tephra level which was used as the reference marker between the sampled sections. The normal magnetozone N1 is almost completely covered by the lacustrine and deltaic sediments of the Alat Formation, while the following reversed magnetozone contains both the Wara Sand and Gravel and the lacustrine Goreya Fm. The N2 polarity zone is completely occupied by the Aro Sand. This polarity sequence has been calibrated to the geomagnetic time scale using the Early to Middle Pleistocene age of the associated vertebrate fauna and fission-track dating. The four magnetozones were thus regarded as representing the chrons by which the Pleistocene is correlated with magnetochronology. Their three reversal boundaries provided the dates of 1.07, 0.99 and 0.78 Ma, allowing to determine average sedimentation rates close to 1 m/ky. Cyclostratigraphy of the magnetic signal, analysed by the spectral analysis of the time series across the Jaramillo and late Matuyama chrons, confirmed that value. The evidenced cyclicities were directly related to the alternating lithofacies, and both to the astronomical parameters driving the climate changes during the deposition of the Dandiero group (some five hundred thousand years). The section with the Homo site covers the Jaramillo/Matuyama boundary, and the Homo bed located 2 m below this limit is dated 0.992 Ma.
description: Rivista italiana di Paleontologia e Stratigrafia, Supplement
DIGITAL MARKETING TOOLS IN THE CONTEXT OF DIGITIZATION PROCESSES
Creators: name: Yurchuk, N.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: marketing
digital marketing
internet marketing
traditional marketing
advertising
digital channels.

description: The article considers the essence of the concept of digital marketing, its structure and features in modern business conditions, compares digital and traditional marketing. The main tools of digital marketing are studied, it is noted that there are no universal solutions for the selection of tools, they must be selected for a specific company. Among the trends of recent years are such tools as online video, native advertising, personalized content, smart advertising with big data, community development. The advantages of digital marketing and the algorithm of development and implementation of digital marketing strategy by domestic enterprises are given. The main problems faced by digital marketing, which are closely related to technological progress, as well as for companies moving to digital marketing, a significant problem in the use of digital marketing is the process of identifying the most valuable information and obtaining it.
FISSION-TRACK DATING OF A TEPHRA LAYER IN THE ALAT FORMATION OF THE DANDIERO GROUP (DANAKIL DEPRESSION, ERITREA)
Creators: name: BIGAZZI, GIULIO
name: LAURA BALESTRIERI, MARIA
name: NORELLI, PIO
name: ODDONE, MASSIMO
name: MEDHIN TECLE, TEWELDE
Publisher: name: Università degli Studi di Milano
Year: 2004

description: Attempts to date a biotite separate from a tephra layer recognized near Buia (Danakil Depression, Eritrea) in the liwer part of the Homo remains – bearing Dandiero group (formerly attributed to the Danakil Formation) using the 39Ar/40Ar method failed because of xenocrystic contamination. For this reason it was applied the fission-track method on glass, since no other phases datable with this technique were present. The quality of glass was very poor for fission-track dating, because of the small size of grains. In addition, after polishing only few glass shards showed useful surfaces for track counting and only 25 spontaneous tracks were counted. The determined fission-track age - 0.75 +/- 0.16 Ma - is a rejuvenated age due to the presence of a certain amount of annealing of spontaneous tracks. An attempt to apply the plateau method for correcting this apparent age failed. A corrected age of 1.3 +/- 0.3 Ma was computed using the size-correction method. In spite of its low precision, this fission-track age represents a significant result, since it corroborates the attribution to Jaramillo Subchron of the normal magnetozone near the base of which the tephra is located.
description: Rivista italiana di Paleontologia e Stratigrafia, Supplement
INTERNET OF THINGS (IoT) AND NEURAL NETWORKS INTERACTION DURING VIDEO OPERATION SURVEILLANCE SYSTEMS
Creators: name: Krutko, D.
name: Khodenkova, E.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: Internet of Things
neural networks
video surveillance
machine learning
video analytics.

description: Our future is progressing more and more rapidly under the influence of such trends as the Internet of Things, neural networks and hardware accelerated video analysis, which provides new opportunities for participants in the IP industry. In this regard, the most important task for security and video surveillance service providers is to follow the speed of change and focus on efforts to achieve highly effective results.
Charge transfer in heterostructures of strongly correlated materials
Creators: name: Gonzalez, I.
name: Okamoto, S.
name: Yunoki, S.
name: Moreo, A.
name: Dagotto, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this manuscript, recent theoretical investigations by the authors in the area of oxide multilayers are briefly reviewed. The calculations were carried out using model Hamiltonians and a variety of non-perturbative techniques. Moreover, new results are also included here. They correspond to the generation of a metallic state by mixing insulators in a multilayer geometry, using the Hubbard and Double Exchange models. For the latter, the resulting metallic state is also ferromagnetic. This illustrates how electron or hole doping via transfer of charge in multilayers can lead to the study of phase diagrams of transition metal oxides in the clean limit. Currently, these phase diagrams are much affected by the disordering standard chemical doping procedure, which introduces quenched disorder in the material.
description: 14 pages, 9 figures. Invited article for a special issue of JPCM on Metal Oxide Thin Films; minor changes in the text
ISOTHERMAL DEFORMATION OF PREPARATIONS FROM OF ALUMINUM ALLOYS DURING ROLLING
Creators: name: Muzychuk, V.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: rolling
stress
deformation
non-uniformity of deformation
stress-strain state
gauges
plots.

description: The article analyzes the advantages of isothermal deformation of aluminum alloy blanks in the rolling process compared to deformation under normal conditions. Technological parameters, such as expansion and pressure, of the process of rolling of aluminum alloy billets, in conditions close to isothermal, are investigated. The dependences of the expansion and pressure of the alloy on the rolls on the degree of deformation, heating temperatures of the workpieces and rolling dies during rolling in smooth rolls are determined.
METHOD FOR DETERMINING THE INTEGRATED VALUE OF A CONSTRUCTION PROJECT
Creators: name: Nakhimi, M.
name: Savina, O.
name: Haidaienko, O.
name: Bielova, O.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: project content management
project management
construction project management
WBS
construction projects

description: This work is devoted to the peculiarities of using an integrated approach in the management of construction projects. It was shown that the integrated approach is used as a combination of the value approach with the management of the content of construction projects into a single integrated process. The processes of operation of these two control methods are considered and a simplified diagram of possible interaction is built. A simpler way of constructing a diagram for integration of value content management of construction projects was presented as a factor in establishing a clear connection to achieve project goals, in this case, time, value (costs) and content (resources).
Taming nucleon density distributions with deep neural network method
Creators: name: Yang, Zu-Xing
name: Zuo, Wei
name: Yin, Peng
name: Fan, Xiao-Hua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the density distributions of finite nuclei employing a well-designed deep neural network method. We calculate the target nucleon density distributions with Skyrme density functional theories, which are used to train the networks. We find that the training with only about $10\%$ nuclei ($300-400$) is sufficient to describe the nucleon density distributions of all the nuclear chart within 2\% relative error. The relative error comes to 5\% when about 200 proton(neutron) density distributions are used for training. We obtained very similar results for different Skyrme density functional theories. Therefore the ability to train networks is weakly dependent on the theoretical model. Moreover, in the process of machine learning, there is a turning point showing the transition from the Fermi-like distribution to the realistic Skyrme distribution, which provides significant properties of convergence process.
description: 7 pages, 6 figures
Το δικαίωμα στην υποβοηθούμενη αναπαραγωγή ως πεδίο έντασης συνταγματικών δικαιωμάτων και περιορισμών
Creators: name: Τζήκα, Διαμάντω Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Αναπαραγωγή
Σύμβαση για τα ανθρώπινα δικαιώματα και τη βιοϊατρική
Τεχνητή γονιμοποίηση
Μέθοδοι υποβοηθούμενης αναπαραγωγής
Θετική ελευθερία
Αρνητική ελευθερία
Μονάδες υποβοηθούμενης αναπαραγωγής
Procreation
Treaty for the human rights and biomedicin
Artificial insemination
Assisted reproductive technology
Positive liberty negative liberty
Centers for the study and conservation of semeu

description: Δικαίωμα αναπαραγωγής (φυσικής και υποβοηθούμενης), νοείται το δικαίωμα του ατόμου να αποφασίσει αν και πότε θα αποκτήσει απογόνους. Η απόφαση αυτή ανήκει στο πεδίο έκφρασης της ανθρώπινης προσωπικότητας που προστατεύεται από το άρθρο 5 παρ. 1. Οι περιορισμοί που τίθενται στην άσκησή του είναι "δικαιώματα των άλλων", το "Σύνταγμα" και τα "χρηστά ήθη"
description: The right to physical or assisted procreation is the person's right to decide if and when he will have children. this decision belongs to the field of expression of human personality, which is protected by article 5 par. 1 of Greek Constitution. The restrictions of the right are the "nights of others", the "Constitution" and the "virtues ethics"