cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Approaches in designing a Zeeman-Slower
Creators: name: Ohayon, Ben
name: Ron, Guy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present two new approaches for the design of a Zeeman-Slower, which rely on optimal compliance with the adiabatic following condition and are applicable to a wide variety of systems. The first approach is an analytical one, based on the assumption that the noise in the system is position independent. When compared with the traditional approach, which requires constant deceleration, for a typical system, we show an improvement of $\sim$ 10% in the maximal capture velocity, allowing for a larger slower acceptance, or a reduction of $sim$ 25% in slower length, allowing for a simpler design and a better collimated beam. The second approach relies on an optimization of a system in which the magnetic field and the noise profile are well known. As an example, we use our 12-coil modular design and show an improvement of $sim$ 9% in maximal capture velocity or, alternatively, a reduction of $\sim$ 33% in slower length as compared with the traditional approach.
Anisotropic Fermi Contour of (001) GaAs Electrons in Parallel Magnetic Fields
Creators: name: Kamburov, D.
name: Mueed, M. A.
name: Shayegan, M.
name: Pfeiffer, L. N.
name: West, K. W.
name: Baldwin, K. W.
name: Lee, J. J. D.
name: Winkler, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate a severe Fermi contour anisotropy induced by the application of a parallel magnetic field to high-mobility electrons confined to a 30-nm-wide (001) GaAs quantum well. We study commensurability oscillations, namely geometrical resonances of the electron orbits with a unidirectional, surface-strain-induced, periodic potential modulation, to directly probe the size of the Fermi contours along and perpendicular to the parallel field. Their areas are obtained from the Shubnikov-de Haas oscillations. Our experimental data agree semi-quantitatively with the results of parameter-free calculations of the Fermi contours but there are significant discrepancies.
description: 5 pages, 5 figures
The LUX Dark Matter Search -- Status Update
Creators: name: Fiorucci, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report on the design, construction and commissioning of the Large Underground Xenon (LUX) dark matter detector at the Sanford Laboratory in Lead, SD, USA. From its inception in 2007, to its construction at a surface laboratory in lead in 2009-2010, its operation in 2011, and its re-installation 1 mile underground in 2012, we review the relevant achievements already obtained and give an outlook on how LUX will become the most sensitive detector in the field in 2013.
description: 3 pages, no figures. To appear in the proceedings of the Sixth symposium of large TPCs for low energy rare events detection, Paris, December 2012
Quantum and classical correlations and Werner states in finite spin linear arrays
Creators: name: Wells, P. R.
name: Chaves, C. M.
name: Castro, J. A. e.
name: Koiller, Belita
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pairwise quantum correlations in the ground state of a N-spins antiferromagnetic chain described by the Heisenberg model with nearest neighbor exchange coupling are investigated. By varying a single coupling between two neighboring sites it is possible to drive spins from entangled to disentangled states, reversibly. For even N the two-spin density matrix is written in the form of a Werner state, allowing identification of the weight parameter with the usual spin-spin correlation function $\langle S_i^z \, S_j^z \rangle = Γ_{ij}$. The correlation functions show universal behavior in the $Γ$-dependence. This study presents a concrete possibility for the practical demonstration of entanglement control, opening alternatives for probing non-classical correlations and the realization of Werner states in familiar condensed matter systems. All required fabrication and measurement ingredients are currently available.
description: arXiv admin note: text overlap with arXiv:1111.4513
The vital role of primary experimental data for ensuring trust in (Photon & Neutron) science
Creators: name: Gotz, Andy
name: Helliwell, John
name: Richter, Tobias
name: Taylor, Jonathan
Publisher: name: Zenodo
Year: 2021
Subjects: raw data, open data, photon sources, neutron sources, reproducibility, replicability, ground truth, open science, PaNOSC

description: The foundation of experimental science is data and the progress of science relies upon a study being reproducible by others’ analysis of the same data. Replicability, on the other hand, comes from independent groups performing their own experiments on the same phenomenon. Reproducibility is not guaranteed in science and recently reproducibility, let alone replicability, has been called into question in a recent Nature group survey indicated that a majority (70%) of respondents had failed to reproduce published results and many (>50%) could not reproduce their own experimental results. Whilst a single survey cannot be taken as indication of an endemic issue, improvements in key areas such as data management can ameliorate trust in science. This paper makes the case for photon and neutron sources to provide raw experimental data as the ground truth for science based on data from photon and neutron sources. It explains why and how this is possible and provides a table summarising the situation at the different sources world-wide. The paper arguments that with the evolving scientific landscape and current technologies, providing raw data for re-use is not any more a question of if but when.
title: Η παραοικονομία στην Ελλάδα με έμφαση στην παραεμπορία
title: The underground economy in Greece, with emphasis on illicit trade
titleType: AlternativeTitle
Creators: name: Γαμπιεράκη, Σούλα
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Δημόσια διοίκηση
Εγκληματικότητα
Παρεμπόριο
Παραοικονομία
Public administration
Underground economy
Illicit trade
Φοροδιαφυγή

description: Το παραεμπόριο συμβάλλει σε σημαντικό στην παραοικονομία και συνεπάγεται ιδιαίτερα έντονες αρνητικές επιδράσεις για τα δημόσια έσοδα, το περιβάλλον, τη δημόσια υγεία και τη δημόσια εικόνα μιας χώρας. Η αδήλωτη νόμιμη παραγωγή, τα αποκρυπτόμενα σε είδος εισοδήματα και η παράνομη παραγωγή αποτελούν βασικές παραμέτρους της παραοικονομίας. Η μη δηλωμένη εργασία και το παράνομο εμπόριο αποτελούν παραμέτρους του παραεμπορίου. Η αναποτελεσματικότητα των αρχών στην αντιμετώπιση του παρεμπορίου και της παραοικονομίας αποτελεί βασικό πρόβλημα. Στη συγκεκριμένη μελέτη εξετάστηκε η αποτίμηση ενός δείγματος ελεγκτών της ΑΑΔΕ , της ΔΙ.Μ.Ε.Α, της Δ.Ε.Ο.Ε, της Ελληνικής Αστυνομίας και του Λιμενικού Σώματος, αλλά και επιχειρηματιών (Ν=47 & 56 αντίστοιχα), όσον αφορά τις στρατηγικές αντιμετώπισης του παρεμπορίου, τον ρόλο του στην παγκοσμιοποιημένη οικονομία και τις αρνητικές συνέπειές του. Οι μετρήσεις πραγματοποιήθηκαν μέσω ερωτηματολογίου. Βάσει της ανάλυσης, προκύπτουν οι εξής διαπιστώσεις: 1) υπάρχει μία αρνητική αποτίμηση για το παραεμπόριο και την παραοικονομία από πλευράς των ελεγκτών και των επιχειρηματιών 2) οι συμμετέχοντες έχουν θετική αποτίμηση για τις στρατηγικές που χρησιμοποιούνται με στόχο την αντιμετώπιση του παρεμπορίου. Ωστόσο, για ορισμένες ενέργειες, όπως ο έλεγχος και η αξιολόγηση των γνώσεων και δεξιοτήτων των στελεχών και οι διεθνείς συνεργασίες, υπάρχει μία λιγότερο θετική αποτίμηση 3) οι ελεγκτές θεωρούν σε μεγαλύτερο βαθμό πως υπάρχει ένας σαφές όραμα για την αντιμετώπιση του παρεμπορίου στην χώρα και πως είναι γνώστες της κείμενης νομοθεσίας, εκτελώντας ακέραια το καθήκον τους. Η μελέτη καταλήγει σε τρεις πρακτικές προτάσεις. Πρώτον, κρίνεται αναγκαία η αξιολόγηση των γνώσεων και δεξιοτήτων των στελεχών της ΑΑΔΕ. Δεύτερον, φαντάζει επιβεβλημένη η ανάπτυξη διεθνών συνεργασιών με άλλους οργανισμούς για την αντιμετώπιση του παρεμπορίου. Τρίτον, κρίνεται αναγκαία η περαιτέρω ενημέρωση του επιχειρηματικού κόσμου για το παρεμπόριο και τις συνέπειές του, βάσει των διαφορών που προκύπτουν μεταξύ των ελεγκτών και των επιχειρηματιών.
Polaronic model of Two Level Systems in amorphous solids
Creators: name: Agarwal, Kartiek
name: Martin, Ivar
name: Lukin, Mikhail D.
name: Demler, Eugene
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: While two levels systems (TLSs) are ubiqitous in solid state systems, microscopic understanding of their nature remains an outstanding problem. Conflicting phenomenological models are used to describe TLSs in seemingly similar materials when probed with different experimental techniques. Specifically, bulk measurements in amorphous solids have been interpreted using the model of a tunneling atom or group of atoms, whereas TLSs observed in the insulating barriers of Josephson junction qubits have been understood in terms of tunneling of individual electrons. Motivated by recent experiments studying TLSs in Josephson junctions, especially the effects of elastic strain on TLS properties, we analyze interaction of the electronic TLS with phonons. We demonstrate that strong polaronic effects lead to dramatic changes in TLS properties. Our model gives a quantitative understanding of the TLS relaxation and dephasing as probed in Josephson junction qubits, while providing an alternative interpretation of bulk experiments. We demonstrate that a model of polaron dressed electronic TLS leads to estimates for the density and distribution of parameters of TLSs consistent with bulk experiments in amorphous solids. This model explains such surprising observations of recent experiments as the existence of minima in the energy of some TLSs as a function of strain and makes concrete predictions for the character of TLS dephasing near such minima. We argue that better understanding of the microscopic nature of TLSs can be used to improve properties of quantum devices, from an enhancement of relaxation time of TLSs, to creating new types of strongly interacting optomechanical systems.
description: 15 pages, 4 figures
Παροχή προστασίας από το δίκαιο της πνευματικής ιδιοκτησίας στα συγγενικά δικαιώματα των ερμηνευτών ή εκτελεστών καλλιτεχνών
Creators: name: Γκέκου, Θέμις
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Πνευματικά δικαιώματα
subject: Συγγενικά δικαιώματα
subject: Νομοθεσία για πνευματική ιδιοκτησία
subject: Δίκαιο πνευματικής ιδιοκτησίας
subject: Ερμηνευτές
subject: Εκτελεστές
subject: Καλλιτέχνες
subject: Προστασία πνευματικών δικαιωμάτων
subject: Πνευματικό έργο

description: Στην παρούσα μεταπτυχιακή εργασία βασικό ζήτημα εστίασης είναι τα πνευματικά δικαιώματα όπως και τα συγγενικά δικαιώματα των καλλιτεχνών ως οργανική πλευρά των πνευματικών δικαιωμάτων. Ειδικότερα θα αναλυθεί το ζήτημα των πνευματικών και συγγενικών δικαιωμάτων στο θεωρητικό του υπόβαθρο , ενώ εν συνεχεία θα αποτυπωθεί το διεθνές και ευρωπαϊκό νομικό πλαίσιο περί των πνευματικών και συγγενικών δικαιωμάτων. Ειδική μνεία θα γίνει στην ελληνική νομοθεσία και στις μεταβολές αυτής αναφορικά με τα πνευματικά και δει με τα συγγενικά δικαιώματα ενώ θα παρουσιασθεί σχετική νομολογία όπως και προβλέψεις της νομοθεσίας για την προστασία των εν λόγω δικαιωμάτων.
Option valuation with Edgeworth Binomial Trees
Creators: name: Αμανατίδης, Λάζαρος
name: Amanatidis, Lazaros
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Option
subject: CRR Model
subject: Edgeworth Model
subject: Edgeworth Binomial Trees
subject: Option pricing
subject: Parameter estimation
subject: Forecasting ability
subject: Skewness
subject: Kurtosis
subject: Δικαιώματα
subject: Διωνυμικό δέντρο
subject: Μοντέλο Edgeworth
subject: Διωνυμικά Δέντρα Edgeworth
subject: Αποτίμηση δικαιωμάτων
subject: Εκτίμηση παραμέτρων
subject: Προβλεπτική ικανότητα
subject: Ασσυμετρία
subject: Κυρτότητα
subject: Κύρτωση

description: Ο σκοπός αυτής της διπλωματικής εργασίας είναι η Αποτίμηση Δικαιωμάτων χρησιμοποιώντας τα Διωνυμικά Δέντρα Edgeworth (Edgeworth Binomial Trees). Ο Mark Rubinstein το 1998 πρότεινε τη χρήση μιας Edgeworth Κατανομής για να μετατρέψει μια τυπική διωνυμική κατανομή σε ομοιόμορφη τυποποιημένη διακριτή κατανομή, με προκαθορισμένη ασσυμετρία και κυρτότητα – η ασσυμετρία είναι μη μηδενική και η κυρτότητα πάνω από 3. Στην αρχή έχουμε μια εισαγωγή για τα διάφορα μοντέλα αποτίμησης δικαιωμάτων, και ακολουθεί η θεωρία της αποτίμησης δικαιωμάτων. Επιπλέον παρουσιάζεται το μοντέλο των Διωνυμικών Δέντρων Edgeworth και τα προτερήματά του σε σχέση με το Διωνυμικό Μοντέλο των Cox-Rubenstein-Ross (CRR). Επίσης παρουσιάζεται η κατασκευή του Διωνυμικού Δέντρου και πως εφαρμόζεται η επέκταση Edgeworth. Ακολουθεί η Εμπειρική μελέτη, όπου συγκρίνεται το μοντέλο των Διωνυμικών Δέντρων Edgeworth με το Διωνυμικό Μοντέλο των Cox-Rubenstein-Ross χρησιμοποιώντας πραγματικά δεδομένα δικαιωμάτων της μετοχής της Meta Platforms για ένα διάστημα 5 μηνών με συνολικά 4 δείγματα τα οποία έχουν διαφορετικές ληκτότητες. Τέλος, μετά τη παρουσίαση των αποτελεσμάτων Εντός Δείγματος και Εκτός Δείγματος, έχουμε τα συμπεράσματα της σύγκρισης.
MJA Vol 5 No 2
Creators: name: Shosholcheva, Mirjana
Publisher: name: figshare
Year: 2021
Subjects: subject: 110301 Anaesthesiology
subject: FOS: Clinical medicine

description: The aim of this specialized medical journal is to speed and promote scientific achievements, novelties’,clinical experience’s, reviews, controversial topics in anesthesia, reanimation and intensive care,as well as other correlated medical branches.
Entanglement dynamics of a two-qubit system coupled individually to Ohmic baths
Creators: name: Duan, Liwei
name: Wang, Hui
name: Chen, Qinghu
name: Zhao, Yang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Developed originally for the Holstein polaron, the Davydov D1 ansatz is an efficient, yet extremely accurate trial state for time-dependent variation of the spin-boson model [J. Chem. Phys. 138, 084111 (2013)]. In this work, the Dirac-Frenkel time-dependent variational procedure utilizing the Davydov D1 ansatz is implemented to study entanglement dynamics of two qubits under the influence of two independent baths. The Ohmic spectral density is used without the Born-Markov approximation or the rotating-wave approximation. In the strong coupling regime finite-time disentanglement is always found to exist, while at the intermediate coupling regime, the entanglement dynamics calculated by Davydov D1 ansatz displays oscillatory behavior in addition to entanglement disappearance and revival.
description: 8 pages, 3 figures
The representation zeta function of a FAb compact p-adic Lie group vanishes at -2
Creators: name: Gonzalez-Sanchez, Jon
name: Jaikin-Zapirain, Andrei
name: Klopsch, Benjamin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 20E18 (Primary) 11M41, 20C15, 22E50 (Secondary)

description: Let G by compact p-adic Lie group and suppose that G is FAb, i.e., that H/[H,H] is finite for every open subgroup H of G. The representation zeta function Z(G,s) encodes the distribution of continuous irreducible complex characters of G. Here s denotes a complex variable and Z(G,s) is defined as the Dirichlet generating function whose nth coefficient is equal to the number of irreducible characters of G of degree n. For p greater than 2 it is known that Z(G,s) defines a meromorphic function on the complex plane. Wedderburn's structure theorem for semisimple algebras implies that ZG,-2) = |G| for finite G. We complement this classic result by proving that Z(G,-2) = 0 for infinite G, assuming that p is greater than 2.
description: 6 pages
CASE STUDIES OF TOGOLESE KARATE FEDERATION "FTK" TOURNAMENTS: LESSONS FROM THE IMPACT AND MANAGEMENT OF EVENTS IN SPORTS ASSOCIATIONS IN TOGO
Creators: name: Amavi, Ayi Kokou
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2022
Subjects: subject: Πολεμικές τέχνες για παιδιά
subject: Πολεμικές τέχνες - Τουρνουά
subject: Φυσική κατάσταση
subject: Αθλητικά γεγονότα - Διοίκηση και οργάνωση
subject: Martial arts for children
subject: Martial arts - Tournaments
subject: Physical fitness
subject: Sports events - Management
subject: Karate tournaments
subject: Organization of sports
subject: Management of sports

description: Sporting activities generally offer young people and older people in our countries an appropriate framework for exercising all kinds of physical and sporting activities to express their motor skills in order to keep fit. The desire to keep fit is not only the reason why young people practice physical exercise, but also the desire to practice sport as a profession or to develop their skills in order to participate in competitions or tournaments organized by sports associations or federations. Thus, in terms of competition, some sportsmen and women compete in tournaments. These sports tournaments are organized by sports associations in Togo periodically according to a plan that gives them a certain image. The associations individually organize tournaments in their discipline according to a certain organization of their own. Thus, at the level of martial arts federations, the Togolese Karate Federation also organizes tournaments in the city of Lomé and in the interior of the country. The aim of our project is to review some of the tournaments that the Togolese Karate Federation has already organized; especially the tournaments of July 2011, July 2014 and December 2017; to analyze how these tournaments were organized before, during and after the event with the aim of observing their real impact and to see how these events can be improved on certain aspects. Following this analysis, we will draw concrete conclusions. This analysis, which will focus on three tournaments, will lead us to propose a guide for organizing sports events to the Togolese Karate Federation, which will also serve as a reference for other associations or sports federations that do not have a guide for organizing sports events. During our research, we were confronted with the reality that there were real organizational shortcomings in the setting up and realization of FTK tournament projects. This led us to make recommendations and to propose a guide for the organization and management of sports events.
The knowledge of 'Olympism' of Physical Education teachers (PE) in Sri Lanka
Creators: name: Abeykoon, Sachintha Jayani Prasangika
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2022
Subjects: subject: Φυσική αγωγή και εκπαίδευση - Πρόγραμμα μαθημάτων - Σρι Λάνκα
subject: Φυσική αγωγή - Έρευνα - Σρι Λάνκα
subject: Φυσική αγωγή και εκπαίδευση - Μελέτη και διδασκαλία (Πρωτοβάθμια) - Ελλάδα - Σρι Λάνκα
subject: Φυσική αγωγή και εκπαίδευση - Μελέτη και διδασκαλία (Δευτεροβάθμια) - Σρι Λάνκα
subject: Ολυμπισμός
subject: Ολυμπιακή παιδεία - Πρόγραμμα μαθημάτων
subject: Ολυμπιακό κίνημα
subject: Physical education for children - Curricula - Sri Lanka
subject: Physical education - Research - Sri Lanka
subject: Physical education and training - Study and teaching (Elementary) - Sri Lanka
subject: Physical education and training - Study and teaching (Secondary) - Sri Lanka
subject: Olympism
subject: Olympic education - Curriculum
subject: Olympic movement
subject: Olympic Education
subject: Olympism
subject: Olympism Curriculum
subject: Olympism Pedagogies
subject: Physical Education

description: According to NIE of Sri Lanka (2015), the national goal of the PE syllabus is to promote national honesty, national harmony, and peace by esteeming human worth and perceiving the differences between Sri Lanka's culturally diverse societies, nation-building, and validating Sri Lanka's recognition. “As a result, the Olympic concept has been incorporated into the physical education curriculum of primary and secondary schools in Sri Lanka." (Nanayakkara, 2012, p.11). Thus, the purpose of this research is to determine what Sri Lankan PE teachers know about Olympism. Therefore, the humanist paradigm is used for this study, which was developed through an interpretive research approach. Then, qualitative research methods have been used for this research. Accordingly, a "Random purposive sampling" consisting of 4 PE teachers from secondary schools in Sri Lanka was used for this research. And also, semi-structured interviews were selected as a method of data collection, and a thematic approach was used to analyze the data. Therefore, four themes were identified, such as knowledge of PE and Olympism, Olympism and curriculum, Pedagogies for teaching Olympism, Barriers and Needs. Accordingly, the findings of this research indicate that participants had a bit of perception of Olympism but they were unable to express a direct and definitive definition. And, they knew the importance of Olympism and wanted to develop their knowledge, but they did not have a way to do so. Consequently, this research suggests that to enhance the teaching Olympism of PE in Sri Lanka, the focus should be on resource updating the development of a formal lesson plan, and the implementation of validated programs to provide physical education teachers with knowledge of Olympism. And also, future studies should be conducted on how such programs should be implemented.
In silico identification of natural antiviral compounds as a potential inhibitor of chikungunya virus non-structural protein 3 macrodomain
Creators: name: Chaudhary, Meenakshi
name: Sehgal, Deepak
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Chikungunya Virus (CHIKV) is having a major impact on humans with potentially life-threatening and debilitating arthritis. The lack of a specific antiviral drug against the CHIKV disease has created an alarming situation to identify or develop potent chemical molecules for its remedial measures. Antiviral therapies for viral diseases are generally expensive and have adverse side effects. Plant-based antiviral natural compounds are the most suitable and best alternative of current antiviral drugs because of less toxicity. In the present study, non-structural protein 3 macrodomain (nsP3MD) of the CHIKV that is essential for virus replication has been selected for anti CHIKV drug target. The compounds were identified using molecular docking, virtual screening and further evaluated by molecular dynamics (MD) simulation studies. The binding mechanism of each compound was analyzed considering the stability and energetic parameter. We have found six plant-based natural antiviral compounds Baicalin, Rutaecarpine, Amentoflavone, Apigetrin, Luteoloside, and Baloxavir as strong inhibitors of nsP3MD of CHIKV. ADMET prediction and target analysis of the selected compounds showed drug likeliness of these compounds. MD simulation studies indicated energetically favorable complex formation between nsP3MD and the selected antiviral compounds. Furthermore, the structural effects on these substitutions were analyzed using the principles of each trajectory, which validated the interaction studies. Our analysis suggests a very high probability of these compounds to inhibit nsP3MD of CHIKV and could be evaluated for Chikungunya fever drug development. Communicated by Ramaswamy H. Sarma
Simple Models with Non-Abelian Moduli on Topological Defects
Creators: name: Shifman, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I explain how conventional topological defects -- the Abrikosov-Nielsen-Olesen (ANO) string and domain walls -- can acquire non-Abelian moduli localized on their world sheets. The set-up is conceptually similar and generalizes that used by Witten for cosmic strings.
description: 9 pages; v2 typos corrected, one reference added
Antihydrogen $(\bar{\rm{H}})$ and muonic antihydrogen $(\bar{\rm{H}}_μ)$ formation in low energy three-charge-particle collisions
Creators: name: Sultanov, Renat A.
name: Guster, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A few-body formalism is applied for computation of two different three-charge-particle systems. The first system is a collision of a slow antiproton, $\bar{\rm{p}}$, with a positronium atom: Ps$=(e^+e^-)$ $-$ a bound state of an electron and a positron. The second problem is a collision of $\bar{\rm{p}}$ with a muonic muonium atom, i.e. true muonium $-$ a bound state of two muons one positive and one negative: Ps$_μ=(μ^+μ^-)$. The total cross section of the following two reactions: $\bar{\rm p}+(e^+e^-) \rightarrow \bar{\rm{H}} + e^-$ and $\bar{\rm p}+(μ^+μ^-) \rightarrow \bar{\rm{H}}_μ + μ^-$, where $\bar{\rm{H}}=(\bar{\rm p}e^+)$ is antihydrogen and $\bar{\rm{H}}_μ=(\bar{\rm p}μ^+)$ is a muonic antihydrogen atom, i.e. a bound state of $\bar{\rm{p}}$ and $μ^+$, are computed in the framework of a set of coupled two-component Faddeev-Hahn-type (FH-type) equations. Unlike the original Faddeev approach the FH-type equations are formulated in terms of only two but relevant components: $Ψ_1$ and $Ψ_2$, of the system's three-body wave function $Ψ$, where $Ψ=Ψ_1+Ψ_2$. In order to solve the FH-type equations $Ψ_1$ is expanded in terms of the input channel target eigenfunctions, i.e. in this work in terms of, for example, the $(μ^+μ^-)$ atom eigenfunctions. At the same time $Ψ_2$ is expanded in terms of the output channel two-body wave functions, that is in terms of $\bar{\rm{H}}_μ$ atom eigenfunctions.
description: 32 pages (preprint), 2 tables, and 9 figures
A test of the failed disk wind scenario for the origin of the broad line region in active galactic nuclei
Creators: name: Galianni, Pasquale
name: Horne, Keith
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It has been recently proposed that the broad line region in active galactic nuclei originates from dusty clouds driven from the accretion disk by radiation pressure, at a distance from the black hole where the disk is cooler than the dust sublimation temperature. We test this scenario by checking the consistency of independent broad line region and accretion disk reverberation measurements, for a sample of 11 well studied active galactic nuclei. We show that independent disk and broad line region reverberation mapping measurements are compatible with a universal disk temperature at the Hβ radius of T[R(Hβ)]=1670(231) K which is close to typical dust sublimation temperatures.
description: 4 pages, 2 figures. Accepted for publication on MNRAS
title: Wege in eine dualisierte  Berufsbildung
title: Roadmap to high-quality dual VET
titleType: Subtitle
Creators: name: Euler, Dieter
Publisher: name: Bertelsmann Stiftung
Year: 2023
Subjects: Berufsausbildung
Duale Ausbildung
Transfer

description: Das duale Ausbildungssystem gilt weltweit als Erfolgsmodell – aber wie lässt sich dieses Erfolgsmodell in andere Länder übertragen? Dieser Frage geht Prof. Dr. Dieter Euler in einer neuen Studie nach, in der er das duale Ausbildungssystem in verschiedene Elemente untergliedert und deren Übertragbarkeit jeweils in mehreren Umsetzungsstufen erörtert. Sein stark praxis- und umsetzungsorientierter Ansatz zeigt, wie ein Transfer einzelner Elemente aussehen kann und wie diese an die Rahmenbedingungen eines Landes angepasst werden können.

Die Studie erscheint in deutscher, englischer, französischer und spanischer Sprache.
Classical Space-Times from the S Matrix
Creators: name: Neill, Duff
name: Rothstein, Ira Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that classical space-times can be derived directly from the S-matrix for a theory of massive particles coupled to a massless spin two particle. As an explicit example we derive the Schwarzchild space-time as a series in $G_N$. At no point of the derivation is any use made of the Einstein-Hilbert action or the Einstein equations. The intermediate steps involve only on-shell S-matrix elements which are generated via BCFW recursion relations and unitarity sewing techniques. The notion of a space-time metric is only introduced at the end of the calculation where it is extracted by matching the potential determined by the S-matrix to the geodesic motion of a test particle. Other static space-times such as Kerr follow in a similar manner. Furthermore, given that the procedure is action independent and depends only upon the choice of the representation of the little group, solutions to Yang-Mills (YM) theory can be generated in the same fashion. Moreover, the squaring relation between the YM and gravity three point functions shows that the seeds that generate solutions in the two theories are algebraically related. From a technical standpoint our methodology can also be utilized to calculate quantities relevant for the binary inspiral problem more efficiently than the more traditional Feynman diagram approach.
Hybridization enables the fixation of selfish queen genotypes in eusocial colonies
Creators: name: Weyna, Arthur
name: Romiguier, Jonathan
name: Mullon, Charles
Publisher: name: Zenodo
Year: 2021
Subjects: Eusociality
Hybridization
Parasitism
Caste determination
Genetic conflicts
Reproductive system
Social hybridogenesis
Ants

description: This archive contains 3 files that supplement the manuscript, entitled “Hybridization allows the fixation of selfish queen genotypes in eusocial colonies” by Weyna Arthur, Jonathan Romiguier and Charles Mullon.
First results on low-mass WIMP from the CDEX-1 experiment at the China Jinping underground Laboratory
Creators: name: Zhao, W.
name: Yue, Q.
name: Kang, K. J.
name: Cheng, J. P.
name: Li, Y. J.
name: Lin, S. T.
name: Bai, Y.
name: Bi, Y.
name: Chang, J. P.
name: Chen, N.
name: Chen, N.
name: Chen, Q. H.
name: Chen, Y. H.
name: Chuang, Y. C.
name: Deng, Z.
name: Du, C.
name: Du, Q.
name: Gong, H.
name: Hao, X. Q.
name: He, H. J.
name: He, Q. J.
name: Hu, X. H.
name: Huang, H. X.
name: Huang, T. R.
name: Jiang, H.
name: Li, H. B.
name: Li, J. M.
name: Li, J.
name: Li, J.
name: Li, X.
name: Li, X. Y.
name: Li, Y. L.
name: Liao, H. Y.
name: Lin, F. K.
name: Liu, S. K.
name: Lv, L. C.
name: Ma, H.
name: Mao, S. J.
name: Qin, J. Q.
name: Ren, J.
name: Ren, J.
name: Ruan, X. C.
name: Shen, M. B.
name: Singh, L.
name: Singh, M. K.
name: Soma, A. K.
name: Su, J.
name: Tang, C. J.
name: Tseng, C. H.
name: Wang, J. M.
name: Wang, L.
name: Wang, Q.
name: Wong, H. T.
name: Wu, S. Y.
name: Wu, W.
name: Wu, Y. C.
name: Wu, Y. C.
name: Xianyu, Z. Z.
name: Xing, H. Y.
name: Xu, Y.
name: Xu, X. J.
name: Xue, T.
name: Yang, L. T.
name: Yang, S. W.
name: Yi, N.
name: Yu, C. X.
name: Yu, H.
name: Yu, X. Z.
name: Zeng, X. H.
name: Zeng, Z.
name: Zhang, L.
name: Zhang, Y. H.
name: Zhao, M. G.
name: Zhong, S. N.
name: Zhou, Z. Y.
name: Zhu, J. J.
name: Zhu, W. B.
name: Zhu, X. Z.
name: Zhu, Z. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The China Dark matter Experiment collaboration reports the first experimental limit on WIMP dark matter from 14.6 kg-day of data taken with a 994 g p-type point-contact germanium detector at the China Jinping underground Laboratory where the rock overburden is more than 2400 m. The energy threshold achieved was 400 eVee. According to the 14.6 kg-day live data, we placed the limit of N= 1.75 * 10^{-40} cm^{2} at 90% confidence level on the spin-independent cross-section at WIMP mass of 7 GeV before differentiating bulk signals from the surface backgrounds.
description: 5 pages, 5 figures
Merging H/W/Z + 0 and 1 jet at NLO with no merging scale: a path to parton shower + NNLO matching
Creators: name: Hamilton, Keith
name: Nason, Paolo
name: Oleari, Carlo
name: Zanderighi, Giulia
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the POWHEG generator for a H/W/Z boson plus one jet, augmented with the recently proposed MiNLO method for the choice of scales and the inclusion of Sudakov form factors. Within this framework, the generator covers all the transverse-momentum region of the H/W/Z boson, i.e. no generation cuts are needed to obtain a finite result. By construction, the generator achieves NLO accuracy for distributions involving a finite (and relatively large) transverse momentum of the boson. We examine the conditions under which also the totally inclusive distributions (e.g. the boson rapidity distribution) achieve NLO accuracy. We find that a minimal modification of the MiNLO prescription is sufficient to achieve such accuracy. We thus construct a NLO generator for H/W/Z boson plus one jet production such that it smoothly merges into a NLO single boson production in the small transverse-momentum region. We notice that, by simply reweighting the boson rapidity distribution to NNLO predictions, we achieve a NNLO accurate generator matched to a shower. The approach applies to all production processes involving a colorless massive system plus one jet. We discuss how it may be extended to general processes.
description: In ver. 2, added reference and fixed the text for its quotation. In ver. 3, corrected a typo in the text, regarding the list of input parameters for the generation of the events
Life after eruption - II. The eclipsing old nova V728 Scorpii
Creators: name: Tappert, C.
name: Vogt, N.
name: Schmidtobreick, L.
name: Ederoclite, A.
name: Vanderbeke, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The old nova V728 Sco has been recently recovered via photometric and spectroscopic observations, 150 years after the nova eruption. The spectral properties pointed to a high-inclination system with a comparatively low mass-transfer rate. In this paper we show that the object is an eclipsing system with an orbital period of 3.32 h. It has enhanced long-term variability that can be interpreted as 'stunted' dwarf-nova-type outbursts. Using the ingress and egress times of the eclipsed components we calculate the radius of the central object. The latter turns out to be significantly larger than a white dwarf and we identify it with a hot inner disc. The implications for models on the behaviour of post-novae are discussed.
description: 10 pages, 7 figures, some in low resolution, to appear in MNRAS
Temporal Variability of Waves at the Proton Cyclotron Frequency Upstream from Mars: Implications for Mars Distant Hydrogen Exosphere
Creators: name: Bertucci, Cesar
name: Romanelli, Norberto
name: Chaufray, Jean-Yves
name: Gomez, Daniel
name: Mazelle, Christian
name: Delva, Magda
name: Modolo, Ronan
name: Gonzalez-Galindo, Francisco
name: Brain, David Andrew
Publisher: name: arXiv
Year: 2013
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We report on the temporal variability of the occurrence of waves at the local proton cyclotron frequency upstream from the Martian bow shock from Mars Global Surveyor observations during the first aerobraking and science phasing orbit periods. Observations at high southern latitudes during minimum-to-mean solar activity show that the wave occurrence rate is significantly higher around perihelion southern summer solstice and lower around the same hemisphere's spring and autumn equinoxes. A similar trend is observed in the hydrogen (H) exospheric density profiles over the Martian South Pole obtained from a model including UV thermospheric heating effects. In spite of the complexity in the ion pick-up and plasma wave generation and evolution processes, these results support the idea that variations in the occurrence of waves could be used to study the temporal evolution of the distant Martian H corona and its coupling with the thermosphere at altitudes currently inaccessible to direct measurements.
description: 16 pages, 2 figures, Submitted to Geophysical Research Letters
Spinon confinement: dynamics of weakly coupled Hubbard chains
Creators: name: Raczkowski, Marcin
name: Assaad, Fakher F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using large-scale determinant quantum Monte Carlo simulations in combination with the stochastic analytical continuation, we study two-particle dynamical correlation functions in the anisotropic square lattice of weakly coupled one-dimensional (1D) Hubbard chains at half-filling and in the presence of weak frustration. The evolution of the static spin structure factor upon increasing the interchain coupling is suggestive of the transition from the power-law decay of spin-spin correlations in the 1D limit to long-range antiferromagnetic order in the quasi-1D regime and at $T=0$. In the numerically accessible regime of interchain couplings, the charge sector remains gapped. The low-energy momentum dependence of the spin excitations is well described by the linear spin-wave theory with the largest intensity located around the antiferromagnetic wave vector. This magnon mode corresponds to a bound state of two spinons. At higher energies the spinons deconfine and we observe signatures of the two-spinon continuum which progressively fade away as a function of interchain hopping.
description: 10 pages, 10 figures, added references, extended discussion of the results
Comment on "Lyapunov statistics and mixing rates for intermittent systems"
Creators: name: Artuso, Roberto
name: Manchein, Cesar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In Pires {\it et al.} [Phys. Rev. E 84, 066210 (2011)] intermittent maps are considered, and the tight relationship between correlation decay of smooth observables and large deviations estimates, as for instance employed in Artuso and Manchein [Phys. Rev. E 80, 036210 (2009)], is questioned. We try to clarify the problem, and provide rigorous arguments and an analytic estimate that disprove the objections raised in Pires {\it et al.} [Phys. Rev. E 84, 066210 (2011)] when ergodic systems are considered.
description: 3 pages
Deployment and simulation of the ASTROD-GW formation
Creators: name: Wu, An-Ming
name: Ni, Wei-Tou
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Constellation or formation flying is a common concept in space Gravitational Wave (GW) mission proposals for the required interferometry implementation. The spacecraft of most of these mission proposals go to deep space and many have Earthlike orbits around the Sun. ASTROD-GW, Big Bang Observer and DECIGO have spacecraft distributed in Earthlike orbits in formation. The deployment of orbit formation is an important issue for these missions. ASTROD-GW (Astrodynamical Space Test of Relativity using Optical Devices optimized for Gravitation Wave detection) is to focus on the goal of detection of GWs. The mission orbits of the 3 spacecraft forming a nearly equilateral triangular array are chosen to be near the Sun-Earth Lagrange points L3, L4 and L5. The 3 spacecraft range interferometrically with one another with arm length about 260 million kilometers with the scientific goals including detection of GWs from Massive Black Holes (MBH), and Extreme-Mass-Ratio Black Hole Inspirals (EMRI), and using these observations to find the evolution of the equation of state of dark energy and to explore the co-evolution of massive black holes with galaxies. In this paper, we review the formation flying for fundamental physics missions, design the preliminary transfer orbits of the ASTROD-GW spacecraft from the separations of the launch vehicles to the mission orbits, and simulate the arm lengths of the triangular formation. From our study, the optimal delta-Vs and propellant ratios of the transfer orbits could be within about 2.5 km/s and 0.55, respectively. From the simulation of the formation for 10 years, the arm lengths of the formation vary in the range 1.73210 +- 0.00015 AU with the arm length differences varying in the range +- 0.00025 AU for formation with 1 degree inclination to the ecliptic plane. This meets the measurement requirements.
description: 15 pages, 5 figures, 3 tables, to be published in IJMPD vol. 22,1341005 (2013); this version to match the printed version
Radar Signal Delay in the Dvali-Gabadadze-Porrati Gravity in the Vicinity of the Sun
Creators: name: Haranas, Ioannis
name: Ragos, Omiros
name: Gkigkitzis, Ioannis
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Physics (physics.gen-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we examine the recently introduced Dvali Gabadadze Porrati gravity model. We use the space time metric in which the local gravitation source dominates the metric over the contributions from the cosmological flow. Anticipating ideal possible solar system effects we derive expressions for the signal time delays in the vicinity of the sun, and for various angles of the signal approach. We use the corresponding numerical value for the parameter r0 to be equal to 5 Mpc. In the vicinity of the Sun and with theta in the range -Pi/3 less than equal to theta less than equal to Pi/3, Deltat is equal to 0.0001233 ps. A time signal delay extremely small to measure by todays technology could be probably measurable in the future years to come, by various future experiments.
description: 4 pages, Astrophysics Space Science, 2012
نصائح للباحثين من أجل كتابة المقالات البحثية العلمية
Creators: name: مجلات معهد الدراسات الاجتماعية و الاعلامية
Publisher: name: Zenodo
Year: 2022

description: بعض النضائح المدعوا الالتزام بها من طرف المساهمين بالمقالات البحثية لمجلات معهد الدراسات الاجتماعية و الاعلامية
Lifting Hamiltonian loops to isotopies in fibrations
Creators: name: Viña, Andrés
Publisher: name: arXiv
Year: 2013
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D35, 53D50, 53D05, 22F30

description: Let $G$ be a Lie group, $H$ a closed subgroup and $M$ the homogeneous space $G/H$. Each representation $Ψ$ of $H$ determines a $G$-equivariant principal bundle ${\mathcal P}$ on $M$ endowed with a $G$-invariant connection. We consider subgroups ${\mathcal G}$ of the diffeomorphism group ${\rm Diff}(M)$, such that, each vector field $Z\in{\rm Lie}({\mathcal G})$ admits a lift to a preserving connection vector field on ${\mathcal P}$. We prove that $#\,π_1({\mathcal G})\geq #\,Ψ(Z(G))$. This relation is applicable to subgroups ${\mathcal G}$ of the Hamiltonian groups of the flag varieties of a semisimple group $G$. Let $M_Δ$ be the toric manifold determined by the Delzant polytope $Δ$. We put $φ_{\bf b}$ for the the loop in the Hamiltonian group of $M_Δ$ defined by the lattice vector ${\bf b}$. We give a sufficient condition, in terms of the mass center of $Δ$, for the loops $φ_{\bf b}$ and $φ_{\bf\tilde b}$ to be homotopically inequivalent.
description: 23 pages, 1 figure. To be published in Int. J. Geom. Methods Mod. Physics
0269 Altering the Titles of Artworks for New Functions. Two Plaster Groups by Josip Urbanija (1877–1943)
Creators: name: Šmid, Karin
Publisher: name: RIHA Journal
Year: 2021

description: Slovenian sculptor Josip Urbanija (1877–1943) received his initial training in workshops in Ljubljana, Selce pri Škofji Loki and Klagenfurt, then he studied with Hans Bitterlich at the Academy of Fine Arts in Vienna shortly before the First World War. He spent the war years in Bosnia, where he completed two monuments. After the dissolution of the Habsburg Monarchy, he settled permanently in Vienna. This is partly the reason why his life and work have hardly been researched and are almost unknown. The aim of the present study is to provide insight into the origin of two monumental sculptural groups initially named Quelle (Water Spring) and Tunnelbrecher (Tunnel Breaker). In addition, it also discusses later names of the two plaster artworks and examines what they reveal about the intended functions of the sculptures.
description: RIHA Journal, 2021: Special Issue "Vienna as a Sculptural Centre in the Long 19th Century. Current Research on Sculpture in Central Europe"
Controlled energy-selected electron capture and release in double quantum dots
Creators: name: Pont, Federico M.
name: Bande, Annika
name: Cederbaum, Lorenz S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Highly accurate quantum electron dynamics calculations demonstrate that energy can be efficiently transferred between quantum dots. Specifically, in a double quantum dot an incoming electron is captured by one dot and the excess energy is transferred to the neighboring dot and used to remove an electron from this dot. This process is due to long-range electron correlation and shown to be operative at rather large distances between the dots. The efficiency of the process is greatly enhanced by preparing the double quantum dot such that the incoming electron is initially captured by a two-electron resonance state of the system. In contrast to atoms and molecules in nature, double quantum dots can be manipulated to achieve this enhancement. This mechanism leads to a surprisingly narrow distribution of the energy of the electron removed in the process which is explained by resonance theory. We argue that the process could be exploited in practice.
description: Letter