cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ο ρόλος της αυτονομίας στη λειτουργία των σχολικών μονάδων
title: The role of school autonomy in education
titleType: AlternativeTitle
Creators: name: Καρατάσιου, Παναγιώτα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Συγκεντρωτισμός
subject: Αποκέντρωση
subject: Σχολική αυτονομία
subject: Γραφειοκρατικό μοντέλο
subject: Αυτοδιαχειριζόμενη εκπαίδευση
subject: Αυτονομία του εκπαιδευτικού

description: Η παρούσα εργασία αποτελεί μια έρευνα σχετικά με το βαθμό αυτονομίας που υπάρχει στα σχολεία της Ελλάδας και το βαθμό επιθυμητής αυτονομίας από την πλευρά των εκπαιδευτικών. Το δείγμα αποτελείται από 159 εκπαιδευτικούς από τον Νομό Αττικής. Η έρευνα πραγματοποιήθηκε με γραπτό ερωτηματολόγιο. Οι ερωτήσεις αφορούν το κατά πόσο οι εκπαιδευτικοί έχουν αυτονομία σε παιδαγωγικά μείζονα ζητήματα αλλά και κατά πόσο εμπλέκονται ή επιθυμούν να εμπλακούν σε διοικητικά και επαγγελματικά θέματα που τους αφορούν άμεσα . Οι τελευταίες ερωτήσεις επιχειρούν να συνδέσουν την αυτονομία με την ικανοποίηση των εκπαιδευτικών από τις συνθήκες εργασίας τους. Τα αποτελέσματα της έρευνας δείχνουν πως το εκπαιδευτικό σύστημα στην Ελλάδα είναι βαθιά συγκεντρωτικό με την πλειοψηφία των εκπαιδευτικών να στερείται την επαγγελματική της αυτονομία σε βασικούς τομείς και λίγοι να είναι αυτοί που να δηλώνουν πολύ ικανοποιημένοι από την εργασία τους. Το πιο βασικό, όμως, είναι ότι όλοι επιθυμούν την αυτονομία τους στο επάγγελμα τους και μάλιστα πιο έντονα εκείνοι που μέχρι τώρα δεν διαθέτουν σχεδόν καθόλου
Visible-light Phase Curves from the Second Year of the TESS Primary Mission
Creators: name: Wong, Ian
name: Kitzmann, Daniel
name: Shporer, Avi
name: Heng, Kevin
name: Fetherolf, Tara
name: Benneke, Björn
name: Daylan, Tansu
name: Kane, Stephen R.
name: Vanderspek, Roland
name: Seager, Sara
name: Winn, Joshua N.
name: Jenkins, Jon M.
name: Ting, Eric B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We carried out a systematic study of full-orbit phase curves for known transiting systems in the northern ecliptic sky that were observed during Year 2 of the TESS primary mission. We applied the same methodology for target selection, data processing, and light-curve fitting as we did in our Year 1 study. Out of the 15 transiting systems selected for analysis, seven - HAT-P-7, KELT-1, KELT-9, KELT-16, KELT-20, Kepler-13A, and WASP-12 - show statistically significant secondary eclipses and day-night atmospheric brightness modulations. Small eastward dayside hotspot offsets were measured for KELT-9b and WASP-12b. KELT-1, Kepler-13A, and WASP-12 show additional phase-curve variability attributed to the tidal distortion of the host star; the amplitudes of these signals are consistent with theoretical predictions. We combined occultation measurements from TESS and Spitzer to compute dayside brightness temperatures, TESS-band geometric albedos, Bond albedos, and phase integrals for several systems. The new albedo values solidify the previously reported trend between dayside temperature and geometric albedo for planets with $1500
description: Submitted to AJ. Revised after first referee report. 46 pages, 18 figures, 11 tables, 5 appendices
Empowering NGOs in Countering Online Hate Messages
Creators: name: Chung, Yi-Ling
name: Tekiroglu, Serra Sinem
name: Tonelli, Sara
name: Guerini, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Studies on online hate speech have mostly focused on the automated detection of harmful messages. Little attention has been devoted so far to the development of effective strategies to fight hate speech, in particular through the creation of counter-messages. While existing manual scrutiny and intervention strategies are time-consuming and not scalable, advances in natural language processing have the potential to provide a systematic approach to hatred management. In this paper, we introduce a novel ICT platform that NGO operators can use to monitor and analyze social media data, along with a counter-narrative suggestion tool. Our platform aims at increasing the efficiency and effectiveness of operators' activities against islamophobia. We test the platform with more than one hundred NGO operators in three countries through qualitative and quantitative evaluation. Results show that NGOs favor the platform solution with the suggestion tool, and that the time required to produce counter-narratives significantly decreases.
description: Preprint of the paper published in Online Social Networks and Media Journal (OSNEM)
Insights on the coupling between vibronically active molecular vibrations and lattice phonons in molecular nanomagnets
Creators: name: Ullah, Aman
name: Baldoví, José J.
name: Gaita-Ariño, Alejandro
name: Coronado, Eugenio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Spin-lattice relaxation is a key open problem to understand the spin dynamics of single-molecule magnets and molecular spin qubits. While modelling the coupling between spin states and local vibrations allows to determine the more relevant molecular vibrations for spin relaxation, this is not sufficient to explain how energy is dissipated towards the thermal bath. Herein, we employ a simple and efficient model to examine the coupling of local vibrational modes with long-wavelength longitudinal and transverse phonons in the clock-like spin qubit [Ho(W$_5$O$_{18}$)$_2$]$^{9-}$. We find that in crystals of this polyoxometalate the vibrational mode previously found to be vibronically active at low temperature does not couple significantly to lattice phonons. This means that further intramolecular energy transfer via anharmonic vibrations is necessary for spin relaxation in this system. Finally, we discuss implications for the spin-phonon coupling of [Ho(W$_5$O$_{18}$)$_2$]$^{9-}$ deposited on a MgO (001) substrate, offering a simple methodology that can be extrapolated to estimate the effects on spin relaxation of different surfaces, including 2D materials.
News analysis for the detection of cyber security issues in digital healthcare
Creators: name: Bertl, Markus
Publisher: name: Young Information Scientist
Year: 2019

description: Objectives: This research reviews the possibilities of text mining in the area of cybercrime in digital healthcare showing how advanced information retrieval and natural language processing can be used to get insights. The aim is to mine news data to find out what is reported about digital healthcare, what security-related critical events happened, and what actors, attack methods, and technologies play a role there. Methods: Different projects already apply text mining successfully in the cyber domain. However, none of these are specifically tailored to threats in the digital healthcare sector or uses an as big data foundation for analysis. To achieve that goal, different text mining methodologies like fact extraction, semantic fields as well as statistical methods like frequency, correlation and trend calculations were used. The news data for the analysis was provided by the DocCenter from the National Defense Academy (DocCenter/NDA) of the Austrian Armed Forces. About 300,000 news articles were processed and analyzed. Additionally, the open source GDELT dataset was investigated. Results & Conclusion: The data points out that cyber threats are present in digital health technologies and cyberattacks are more and more threatening to organizations, governments, and every person them self. Not only hacker groups, firms, and governments are involved in these attacks, also terroristic organizations use cyberwarfare. That, together with the amount of technology in digital healthcare like pacemakers, IoT, wearables but also the importance of healthcare as critical infrastructure and the dependence on electronic health records makes our society vulnerable.
description: Young Information Scientist, Bd. 4 (2019)
Advances in Clocking for Energy-Conscious IoT Systems
Creators: Sudhakar Pamarti
Publisher: name: IEEE
Year: 2021

Webinar Slides
Abstract: Clocks play a central role in IoT devices. Apart from their typical use in communications, localization, timing mixed-signal and digital logic units etc., they also serve as an always-ON time-keeper and provide timing for aggressive duty cycling of power-hungry blocks. The last two use cases have a great impact on overall system energy consumption of several IoT devices, and require clocks that are simultaneously stable and consume low energy. This talk will describe two recent techniques that lower energy consumption in stable crystal oscillators: one via quick startup of the XO and the other via a very low energy sustaining circuit.

Biography: Dr. Sudhakar Pamarti is a Professor of Electrical and Computer Engineering at the University of California, Los Angeles. He received the Bachelor of Technology degree from the Indian Institute of Technology, Kharagpur in 1995, and M.S. and Ph.D. degrees in electrical engineering from the University of California, San Diego in 1997 and 2003 respectively. He has either worked for, consulted with, or advised both software and hardware companies such as Hughes Software Systems, Rambus Inc., SiTime, Alterra, FemtoDx etc. on various aspects of wireless and wireline communications, and analog, mixed-signal, and RF integrated circuit (IC) design.
His research focuses on developing various techniques, especially signal processing ones, to overcome common impairments in ICs. This includes both establishing the theoretical basis of such techniques as well as demonstrating their efficacy using record setting prototype ICs. Dr. Pamarti is a recipient of the National Science Foundation’s CAREER award. He currently serves on the technical program committees of CICC and ISSCC, as a Solid State Circuits Society Distinguished Lecturer, and has, in the past, served as an Associate Editor for both Parts I and II of the IEEE Transactions on Circuits and Systems, and as a Guest Editor for the IEEE Journal of Solid-State Circuits.
Spectral statistics of the quenched normal modes of a network-forming molecular liquid
Creators: name: Matharoo, Gurpreet S.
name: Razul, M. Shajahan G.
name: Poole, Peter H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We evaluate the density of states of the quenched normal modes of ST2 water, and their statistical fluctuations, for a range of densities spanning three regimes of behavior of a hydrogen bonded liquid: a lower-density regime of random tetrahedral network formation; in the vicinity of a liquid-liquid critical point; and in a higher-density regime of fragile glass-forming behavior. For all cases we find that the fluctuations around the mean spectral densities obey the predictions of the Gaussian orthogonal ensemble of random matrix theory. We also measure the participation ratio of the normal modes across the entire frequency range, and find behavior consistent with the majority of modes being of an extended nature, rather than localized.
description: Accepted for publication in The Journal of Chemical Physics
J/psi dissociation by light mesons in an extended Nambu Jona-Lasinio model
Creators: name: Bourque, A.
name: Gale, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An alternative model for the dissociation of the J/psi is proposed. Chiral symmetry is properly implemented. Abnormal parity interactions and mesonic form factors naturally arise from the underlying quark sub-structure. Analytic confinement for the light quarks is generated by appropriately chosen the quark interaction kernels. Dissociation cross sections of the J/psi by either a pion or a rho meson are then evaluated and discussed.
description: 24 pages, 13 figures, final version
Collection and harmonization of system logs and prototypal Analytics services with the Elastic (ELK) suite at the INFN-CNAF computing centre
Creators: name: Diotalevi, Tommaso
name: Falabella, Antonio
name: Martelli, Barbara
name: Michelotto, Diego
name: Morganti, Lucia
name: Bonacorsi, Daniele
name: Giommi, Luca
name: Tisbeni, Simone Rossi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The distributed Grid infrastructure for High Energy Physics experiments at the Large Hadron Collider (LHC) in Geneva comprises a set of computing centres, spread all over the world, as part of the Worldwide LHC Computing Grid (WLCG). In Italy, the Tier-1 functionalities are served by the INFN-CNAF data center, which provides also computing and storage resources to more than twenty non-LHC experiments. For this reason, a high amount of logs are collected each day from various sources, which are highly heterogeneous and difficult to harmonize. In this contribution, a working implementation of a system that collects, parses and displays the log information from CNAF data sources and the investigation of a Machine Learning based predictive maintenance system, is presented.
description: Submitted to proceedings of International Symposium on Grids & Clouds 2019 (ISGC2019)
Neue Forschungen zum ländlichen Fundplatz Molino San Vincenzo (Toskana, Italien)
Creators: name: Hagmann, Dominik
name: Schreck, Veronika
Publisher: name: Phoibos Verlag
Year: 2019
Subjects: Ausgrabung
Digital Humanities
Material Culture
Digital Archaeology
Dewey Decimal Classification, Italy & adjacent territories to 476
Classificazione decimale Dewey, Italy & adjacent territories to 476
Dewey-Dezimalklassifikation, Geschichte Italiens und benachbarter Gebiete bis 476
Deweyev decimalni sistem klasifikacije, Italy & adjacent territories to 476

description: Molino San Vincenzo is an ancient rural settlement in Tuscany. The paper focus on selected results from the 2015's excavation season mainly, anaylsing the different types of foundation walls.
HeldInnen zwischen Sexualität und Gewalt im japanischen Kino
Creators: name: Liechtenfeld, Kanyo Cornelia
Year: 2010

description: In meiner Diplomarbeit beschreibe ich die Verbindung von japanischem Kino und der Darstellung von Helden von Sexualität und Gewalt, indem ich ausgewählte Filmbeispiele präsentiere, in denen diese Themen vertreten sind. Im gesamten ergeben die ethnographisch und filmtheoretisch diskutierten Filme von Akira Kurosawa, Nagisa Oshima, Takeshi Kitano, Mamoru Oshii und Takashi Miike ein repräsentatives Bild der japanischen Filmlandschaft, um Themen der japanischen Gesellschaft, in einer globalisierten Welt, zu analysieren. Diese Arbeit stellt eine Annäherung der Lücke zwischen den filmwissenschaftlichen Analysen, kulturfremder, visueller Darstellungen und dem kultur- und sozialanthropologischem Zugang zu diesem Themenfeld, dar. Um ein besseres Verständnis der Begrifflichkeiten meiner Arbeit zu erzielen, führten mich meine Forschung zu den unterschiedlichsten Problematiken, die wiederum ein Netz gesponnen haben, welches meine Hauptthematik auffängt und widerspiegelt. Zu Beginn wollte ich den grundlegenden Begriff des Helden näher beleuchten, der mythisch und in der Form des Spielfilmhelden, dekonstruiert wurde. Diese verschiedenen Positionen bringen die Relevanz und Wandelbarkeit des Heroen in der menschlichen Erzählkultur zu Vorschein. Um diesen Hauptcharakter in eine Beziehung zu setzten, wurden zentrale Elemente von Geschichten, wie eben den Gewaltaspekt und den Umgang mit der Sexualität, herausgearbeitet. Dabei ist eine differenzierte Darstellung von Gewalt aufgezeigt worden, die zwar auf die Gefahren eingeht, jedoch nicht verallgemeinert und pauschalisiert. Die Visualisierung von Sexualität im Spielfilm ist ein höchst spannendes und kontroverses Thema da es Aufschluss über die kulturelle Konnotation von Männlichkeit und Weiblichkeit geben kann. Anhand des Beispiels des japanischen Kinos und deren Gesellschaft ist die kulturspezifische Prägung, der Verkettung dieser Begriffe, deren Symbolik und deren Umsetzung zu erkennen. Es kam immer wieder die Frage auf, inwieweit Film als populäres Medium einen Wahrheitsgehalt liefert und wie die Erschaffung einer Illusion auf Zeit, auf den gesamten Prozess der Produktion von Filmen und deren Konsumation Einfluss nehmen kann. Die untersuchten Phänomene dieser Arbeit übersteigen ihren möglichen Umfang bei Weitem. Daher kann man nicht von einem Forschungsergebnis nach der Methode der Grounded Theory sprechen, sondern vielmehr bedarf dieser Themenkomplex weiterer Forschung.
Slides for: Getting to Zero Emissions with Help from Smart Grid Functionality
Creators: Paul N. A. Acchione
Publisher: name: IEEE
Year: 2021

Slides for Webinar: Getting to Zero Emissions with Help from Smart Grid Functionality
As power systems decarbonize their generation, they will experience a new challenge. All zero-emission electrical power systems produce significant amounts of surplus clean electricity. The current practice in most jurisdictions is to curtail the excess production that can’t be stored or exported to neighbouring power grids. The webinar will present data from Ontario, Canada. Ontario’s power system is now about 94% carbon free and needs to manage significant amounts of surplus clean electricity. About half is stored or exported at low spot market prices to neighboring power grids and about half is currently curtailed (wasted).  This webinar proposes some retail electricity price reforms and smart grid functionality that can enable consumers to cost effectively use that surplus clean electricity when it is available to displace their fossil fuel use, reduce their overall energy bills and lower their atmospheric emissions.
MT‐102 prevents tissue wasting and improves survival in a rat model of severe cancer cachexia
Creators: name: Pötsch, Mareike S.
name: Ishida, Junichi
name: Palus, Sandra
name: Tschirner, Anika
name: Haehling, Stephan Von
name: Doehner, Wolfram
name: Anker, Stefan D.
name: Springer, Jochen
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2020
Subjects: subject: Cancer cachexia
subject: Animal model
subject: Drug development
subject: Muscle wasting
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Background: Cachexia, a common manifestation of malignant cancer, is associated with wasting of skeletal muscle and fat tissue. In this study, we investigated the effects of a new first in class anabolic catabolic transforming agent on skeletal muscle in a rat model of cancer cachexia. Methods: Young male Wistar Han rats were intraperitoneally inoculated with 108 Yoshida hepatoma AH-130 cells and once daily treated with 0.3 mg kg−1, 3 mg kg−1 MT-102, or placebo by gavage. Results: Three mg kg−1d−1 MT-102 not only prevented progressive loss of fat mass (−6 ± 2 g vs -12 ± 1 g; P < 0.001); lean mass (+1 ± 10 g vs. −37 ± 2 g; P < 0.001) and body weight (+1 ± 13 g vs. −60 ± 2 g; P < 0.001) were remained. Quality of life was also improved as indicated by a higher food intake 12.9 ± 3.1 g and 4.3 ± 0.5 g, 3 mg kg−1d−1 MT-102 vs. placebo, respectively, P < 0.001) and a higher spontaneous activity (52 369 ± 6521 counts/24 h and 29 509 ± 1775 counts/24 h, 3 mg·kg-1d-1 MT-102 vs. placebo, respectively, P < 0.01) on Day 11. Most importantly, survival was improved (HR = 0.29; 95% CI: 0.16–0.51, P < 0.001). The molecular mechanisms behind these effects involve reduction of overall protein degradation and activation of protein synthesis, assessed by measurement of proteasome and caspase-6 activity or Western blot analysis, respectively. Conclusions: The present study shows that 3 mg kg−1 MT-102 reduces catabolism, while inducing anabolism in skeletal muscle leading to an improved survival.
A first principles study on FeAs single layers
Creators: name: Dai, Jun
name: Li, Zhenyu
name: Yang, Jinlong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: FeAs- single layer is tested as a simple model for LaFeAsO and BaFe2As2 based on first-principles calculations using generalized gradient approximation (GGA) and GGA+U. The calculated single- layer geometric and electronic structures are inconsistent with that of bulk materials. The bulk collinear antiferromagnetic ground state is failed to be obtained in the FeAs- single layer. The monotonous behavior of the Fe-As distance in z direction upon electron or hole doping is also in contrast with bulk materials. Our results indicate that, in LaFeAsO and BaFe2As2, interactions between FeAs layer and other layers beyond simple charge doping are important, and a single FeAs layer may not represent a good model for Fe based superconducting materials.
description: submitted to Chin. J. Chem. Phys
Quantum quasiresonances in grazing incident angle atom-surface collisions
Creators: name: Ruiz, Antonia
name: Palao, Jose P.
name: Heller, Eric J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The momentum transfer between the normal components to an index direction in the collision of an atom with a periodic surface is investigated. For fast atoms with grazing angle of incidence there is an interval of azimuthal angles around the index direction for which the energy transfer can be very efficient. This effect is reflected in quantum diffraction patterns with large non-specular peaks, associated with the parallel to the surface and normal to the index direction momentum component, and can be described in terms of quasiresonance. Although the classical dynamics does not reproduce the precise quantum diffraction probabilities, indicating the quantum nature of this effect, classical and quantum computations show that the span of the quasiresonance region coincides in both dynamics and can be classically estimated from the phase-space analysis.
description: 4 pages, 3 figures
Probing Dark Contents in Globular Clusters With Timing Effects of Pulsar Acceleration
Creators: name: Wang, Li-Chun
name: Xie, Yi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate pulsar timing residuals due to the coupling effect of the pulsar transverse acceleration and the R$\rm{\ddot{o}}$mer delay. The effect is relatively small and usually negligible. Only for pulsars in globular clusters, it is possibly important. The maximum residual amplitude, which is from the pulsar near the surface of the core of the cluster, is about tens nanoseconds, and may hardly be identified for most of the globular clusters currently. However, an intermediate-mass black hole in the centre of a cluster can increase apparently the timing residual magnitudes. Particularly for the pulsars in the innermost core region, their residual magnitudes may be significant. The high-magnitude residuals, which above critical lines of each cluster, are strong evidences for the presence of a black hole or dark remnants of comparable total mass in the centre of the cluster. We also explored the timing effects of line-of-sight accelerations for the pulsars. The distribution of measured line-of-sight accelerations are simulated with a Monte Carlo method. A two-dimensional Kolmogorov-Smirnov tests are performed to reexamine the consistency of distributions of the simulated and reported data for various values of parameters of the clusters. It is shown that the structure parameters of Terzan 5 can be well constrained by comparing the distribution of measured line-of-sight accelerations with the distributions from Monte Carlo simulations. We provide that the cluster has an upper limit on the central black hole/dark remnant mass of $ \sim 6000 M_{\odot} $.
description: Accepted for publication in RAA letter. 13 pages, 6 figures, comments are welcome
Polarization of Lambda^0 hyperons in nucleus-nucleus collisions at high energies
Creators: name: Ladygin, V. P.
name: Jerusalimov, A. P.
name: Ladygina, N. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The measurement of Lambda^0 hyperons polarization in nucleus-nucleus collisions is considered as one of possible tools to study the phase transition. Fixed target and collider experiments are discussed for the case of Lambda^0's production from Au-Au central collisions at \sqrt{s_{NN}} of several GeV.
description: 15 pages, 6 figures
Deep vacancy induced low-density fluxional interfacial water
Creators: name: Liu, Keyang
name: Guo, Jianqing
name: Fu, Weizhong
name: Chen, Ji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Interfacial water on transition metal oxides such as TiO$_2$ has been widely studied because of their structural complexity and scientific relevance in e.g. photocatalysis and ice growth. Using ab initio molecular dynamics, we find that interfacial water on anatase (101) surface features an unconventional fluxional structure with reduced contact layer density. The density reduction and flexibility of interfacial water are induced by oxygen vacancy defects deeply located in the subsurface. Our study proposes a fresh perspective of the anatase/water interface, raising the importance of non-trivial long-range effects caused by deep defects. These often-neglected effects highlight the necessity and challenges of the state-of-the-art simulation and experimental probing of solid liquid interfaces.
description: 14 pages, 4 figures
Bockstein theorem for nilpotent groups
Creators: name: Cencelj, M.
name: Dydak, J.
name: Mitra, A.
name: Vavpetic, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 54F45, 55M10, 54C65

description: We extend the definition of Bockstein basis $σ(G)$ to nilpotent groups $G$. A metrizable space $X$ is called a {\it Bockstein space} if $\dim_G(X) = \sup\{\dim_H(X) | H\in σ(G)\}$ for all Abelian groups $G$. Bockstein First Theorem says that all compact spaces are Bockstein spaces. Here are the main results of the paper: Let $X$ be a Bockstein space. If $G$ is nilpotent, then $\dim_G(X) \leq 1$ if and only if $\sup\{\dim_H(X) | H\inσ(G)\}\leq 1$. $X$ is a Bockstein space if and only if $\dim_{\Z_{(l)}} (X) = \dim_{\hat{Z}_{(l)}}(X)$ for all subsets $l$ of prime numbers.
description: 10 pages
Hybrid stars with color superconducting cores in an extended FCM model
Creators: name: Curin, Daniela
name: Ranea-Sandoval, Ignacio F.
name: Mariani, Mauro
name: Orsaria, Milva G.
name: Weber, Fridolin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We investigate the influence of repulsive vector interactions and color superconductivity on the structure of neutron stars using an extended version of the field correlator method (FCM) for the description of quark matter. The hybrid equation of state is constructed using the Maxwell description, which assumes a sharp hadron-quark phase transition. The equation of state of hadronic matter is computed for a density-dependent relativistic lagrangian treated in the mean-field approximation, with parameters given by the SW4L nuclear model. This model described the interactions among baryons in terms of $σ, ω, ρ, σ^*$, and $ϕ$ mesons. Quark matter is assumed to be in either the CFL or the 2SC+s color superconducting phase. The possibility of sequential (hadron-quark, quark-quark) transitions in ultra-dense matter is investigated. Observed data related to massive pulsars, gravitational-wave events, and NICER are used to constrain the parameters of the extended FCM model. The successful equations of state are used to explore the mass-radius relationship, radii, and tidal deformabilities of hybrid stars. A special focus lies on investigating consequences that slow or fast conversions of quark-hadron matter have on the stability and the mass-radius relationship of hybrid stars. We find that if slow conversion should occur, a new branch of stable massive stars would exist whose members have radii that are up to 1.5~km smaller than those of conventional neutron stars of the same mass. Such objects could be possible candidates for the stellar high-mass object of the GW190425 binary system.
description: This article has the same content as the one published in Universe 2021, 7(10), 370
Special Examples of Diffusions in Random Environment
Creators: name: del Tenno, Ivan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 82D30; 60K37

description: In this note we present some examples of diffusions in random environment whose asymptotic behavior is rather surprising. We construct a family of diffusions that are small perturbations of Brownian motion with non-vanishing expected local drift under the static measure of the environment but where the ballistic behavior is lost. As slight modifications of this collection of diffusions we also provide examples with ballistic behavior where the non-vanishing limiting velocity points to a direction opposite to the expected local drift under the static measure.
description: 16 pages; accepted for publication in "Stochastic Processes and their Applications"
Tachyonic decay of unstable Dirichlet branes
Creators: name: Nelson, William
name: Sakellariadou, Mairi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider an unstable bound system of two supersymmetric Dirichlet branes of different dimensionality ($p,p'$ with $p'
description: 12 pages; two minor modifications to match version accepted for publication in PRD
Decoupling structure of the principal sigma model-Maxwell interactions
Creators: name: Yilmaz, Nejat Tevfik
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The principal sigma model and Abelian gauge fields coupling is studied. By expressing the first-order formulation of the gauge field equations an implicit on-shell scalar-gauge field decoupling structure is revealed. It is also shown that due to this decoupling structure the scalars of the theory belong to the pure sigma model and the gauge fields sector consists of a number of coupled Maxwell theories with currents partially induced by the scalars.
description: 13 pages
Lifetime Observation of Cognition and Physiological Parameters in Male Mice
Creators: name: Kahnau, Pia
name: Guenther, Anja
name: Boon, Marcus Nicolaas
name: Terzenbach, Janine Denise
name: Hanitzsch, Eric
name: Lewejohann, Lars
name: Brust, Vera
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: laboratory mice
subject: cognition
subject: IntelliCage
subject: lifetime observation
subject: resting metabolic rate
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: Laboratory mice are predominantly used for one experiment only, i.e., new mice are ordered or bred for every new experiment. Moreover, most experiments use relatively young mice in the range of late adolescence to early adulthood. As a consequence, little is known about the day-to-day life of adult and aged laboratory mice. Here we present a long-term data set with three consecutive phases conducted with the same male mice over their lifetime in order to shed light on possible long-term effects of repeated cognitive stimulation. One third of the animals was trained by a variety of learning tasks conducted up to an age of 606 days. The mice were housed in four cages with 12 animals per cage; only four mice per cage had to repeatedly solve cognitive tasks for getting access to water using the IntelliCage system. In addition, these learner mice were tested in standard cognitive tests outside their home-cage. The other eight mice served as two control groups living in the same environment but without having to solve tasks for getting access to water. One control group was additionally placed on the test set-ups without having to learn the tasks. Next to the cognitive tasks, we took physiological measures (body mass, resting metabolic rate) and tested for dominance behavior, and attractivity in a female choice experiment. Overall, the mice were under surveillance until they died a natural death, providing a unique data set over the course of virtually their entire lives. Our data showed treatment differences during the first phase of our lifetime data set. Young learner mice showed a higher activity, less growth and resting metabolic rate, and were less attractive for female mice. These effects, however, were not preserved over the long-term. We also did not find differences in dominance or effects on longevity. However, we generated a unique and valuable set of long-term behavioral and physiological data from a single group of male mice and note that our long-term data contribute to a better understanding of the behavioral and physiological processes in male C57Bl/6J mice.
Topological magnon insulator spin excitations in the two-dimensional ferromagnet CrBr$_3$
Creators: name: Cai, Zhengwei
name: Bao, Song
name: Gu, Zhao-Long
name: Gao, Yi-Peng
name: Ma, Zhen
name: Shangguan, Yanyan
name: Si, Wenda
name: Dong, Zhao-Yang
name: Wang, Wei
name: Wu, Yizhang
name: Lin, Dongjing
name: Wang, Jinghui
name: Ran, Kejing
name: Li, Shichao
name: Adroja, Devashibhai
name: Xi, Xiaoxiang
name: Yu, Shun-Li
name: Wu, Xiaoshan
name: Li, Jian-Xin
name: Wen, Jinsheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological magnons are bosonic analogues of topological fermions in electronic systems. They have been studied extensively by theory but rarely realized by experiment. Here, by performing inelastic neutron scattering measurements on single crystals of a two-dimensional ferromagnet CrBr$_3$, which was classified as Dirac magnon semimetal featured by the linear bands crossing at the Dirac points, we fully map out the magnetic excitation spectra, and reveal that there is an apparent gap of $\sim$3.5~meV between the acoustic and optical branches of the magnons at the K point. By collaborative efforts between experiment and theoretical calculations using a five-orbital Hubbard model obtained from first-principles calculations to derive the exchange parameters, we find that a Hamiltonian with Heisenberg exchange interactions, next-nearest-neighbor Dzyaloshinskii-Moriya (DM) interaction, and single-ion anisotropy is more appropriate to describe the system. Calculations using the model show that the lower and upper magnon bands separated by the gap exhibit Chern numbers of $\pm1$. These results indicate that CrBr$_3$ is a topological magnon insulator, where the nontrivial gap is a result of the DM interaction.
description: Version as published in PRB Letter, main text 7 pages, supplementary materials 6 pages
Automatic rectification of Landsat images using features derived from digital terrain models
Creators: name: Little, James J.
Publisher: name: University of British Columbia
Year: 2010

description: Before two images of the same object can be compared, they must be brought into correspondence with some reference datum. This process is termed registration. The reference can be one of the images, a synthetic image, a map or other symbolic representation of the area imaged. A novel method is presented for automatically determining the transformation to align a Landsat image to a digital terrain model, a structure which represents the topography of an area. Parameters of an affine transformation are computed from the correspondence between features of terrain derived from the digital terrain model, and brightness discontinuities extracted from the Landsat image.
Klinische Untersuchungen zur Optimierung der „Descemet Membrane Endothelial Keratoplasty“
Creators: name: Pilger, Daniel
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: DMEK
subject: corneal transplantation
subject: femtosecond laser
subject: Descemet membrane endothelial kerazoplasty
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Patienten mit einer endothelialen Erkrankung können nach einer DMEK mit einer sehr guten Visusrehabilitation rechnen. Zur Vermeidung von Komplikationen lassen sich einige Empfehlungen formulieren: Während der Voruntersuchung von DMEK Patienten sollten unkomplizierte Fälle identifiziert werden. Für dies Patienten bietet sich an, während der Operationsvorbereitung auf eine Peribulbäranästhesie zu verzichten und das Auge lediglich mit einer Tropfanästhesie zu betäuben. So lassen sich die Risiken einer invasiven Peribulbäranästhesie vermeiden und die Patienten auf eine subjektiv weniger schmerzhafte Art vorbereiten, ohne dabei die eigentliche Operation zu verkomplizieren. Während der Operation kann die Descemetorhexis durch die Verwendung eines Femtosekundenlasers vereinfacht werden. Durch die höhere Präzision dieser Methode lassen sich Überlappungen von Spender und Empfängerendothel vermeiden und endothelfreie Bereiche reduzieren. Dies könnte einen positiven Effekt auf die Endothelzellzahl haben und die Rate von postoperativen Transplantatablösungen reduzieren. Unterstützt werden sollte dies weiterhin durch eine Lufttamponade der gesamten Vorderkamme, die physiologische Druckwerte des Auges ermöglicht und mind. zwei Stunden beibehalten wird. Den Patienten ist, nachdem ein Teil der Luft abgelassen wurde, zu raten weiterhin die meiste Zeit am Tag in einer horizontalen Lage zu verbringen. Transplantate pseudophaker Spender sind für die DMEK geeignet. Es ist aber ratsam, solche Transplantate überwiegend bei Patienten ohne okuläre Vorerkrankungen, die einen negativen Einfluss auf die Endothelzellzahl haben könnten, zu verwenden, da sie zu einem schnelleren Endothelzellverlust neigen. In jedem Fall sollten Empfänger pseudophaker Spenderorgane postoperativ eng kontrolliert werden, um eine kritische Endothelzellzahl frühzeitige erkennen zu können.
Two-Pion Production in Proton-Proton Collisions with Polarized Beam
Creators: name: El-Bary, S. Abd
name: El-Samad, S. Abd
name: Bilger, R.
name: Brinkmann, K. -Th.
name: Clement, H.
name: Dietrich, M.
name: Doroshkevich, E.
name: Dshemuchadse, S.
name: Erhardt, A.
name: Eyrich, W.
name: Filippi, A.
name: Freiesleben, H.
name: Fritsch, M.
name: Geyer, R.
name: Gillitzer, A.
name: Hanhart, C.
name: Hauffe, J.
name: Haug, K.
name: Hesselbarth, D.
name: Jaekel, R.
name: Jakob, B.
name: Karsch, L.
name: Kilian, K.
name: Koch, H.
name: Kress, J.
name: Kuhlmann, E.
name: Marcello, S.
name: Marwinski, S.
name: Meier, R.
name: Moeller, K.
name: Morsch, H. P.
name: Naumann, L.
name: Ritman, J.
name: Roderburg, E.
name: Schoenmeier, P.
name: Schulte-Wissermann, M.
name: Schroeder, W.
name: Steinke, M.
name: Stinzing, F.
name: Sun, G. Y.
name: Waechter, J.
name: Wagner, G. J.
name: Wagner, M.
name: Weidlich, U.
name: Wilms, A.
name: Wintz, P.
name: Wirth, S.
name: Zhang, G.
name: Zupranski, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The two-pion production reaction $\vec{p}p\to ppπ^+π^-$ was measured with a polarized proton beam at $T_p \approx$ 750 and 800 MeV using the short version of the COSY-TOF spectrometer. The implementation of a delayed pulse technique for Quirl and central calorimeter provided positive $π^+$ identification in addition to the standard particle identification, energy determination as well as time-of-flight and angle measurements. Thus all four-momenta of the emerging particles could be determined with 1-4 overconstraints. Total and differential cross sections as well as angular distributions of the vector analyzing power have been obtained. They are compared to previous data and theoretical calculations. In contrast to predictions we find significant analyzing power values up to $A_y$ = 0.3.
The Jet-Disk Coupling of Seyfert Galaxies from a Complete Hard X-ray Sample
Creators: name: Liu, Xiang
name: Chang, Ning
name: Han, Zhenhua
name: Wang, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze the jet-disk coupling for different subsamples from a complete hard X-ray Seyfert sample to study the coupling indices and their relation to accretion rate. The results are: (1) the power-law coupling index ranges from nearly unity (linear correlation) for radio-loud Seyferts to significantly less than unity for radio-quiet ones. This declining trend of coupling index also holds from larger sources to compact ones; (2) the Seyferts with intermediate to high accretion rate (Eddington ratio $λ\sim$ 0.001 to 0.3) show a linear jet-disk coupling, but it shallows from near to super Eddington ($λ\sim$ 0.3 to 10), and the former is more radio loud than the latter; (3) the Seyfert 1s are slightly steeper than the Seyfert 2s, in the jet-disk correlation. In the linear coupling regime, the ratio of jet efficiency to radiative efficiency ($η/\varepsilon$) is nearly invariant, but in low accretion or super accretion regime, $η/\varepsilon$ varies with $λ$ in our model. We note that a radio-active cycle of accretion-dominated active galactic nuclei would be: from a weaker jet-disk coupling in $λ<0.001$ for low luminosity Seyferts, to a linear coupling in $0.001
description: 9 pages, 3 figures, 1 table, published in Universe 2020, 6(5), 68
Formalising the pi-calculus using nominal logic
Creators: name: Bengtson, Jesper
name: Parrow, Joachim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.1

description: We formalise the pi-calculus using the nominal datatype package, based on ideas from the nominal logic by Pitts et al., and demonstrate an implementation in Isabelle/HOL. The purpose is to derive powerful induction rules for the semantics in order to conduct machine checkable proofs, closely following the intuitive arguments found in manual proofs. In this way we have covered many of the standard theorems of bisimulation equivalence and congruence, both late and early, and both strong and weak in a uniform manner. We thus provide one of the most extensive formalisations of a process calculus ever done inside a theorem prover. A significant gain in our formulation is that agents are identified up to alpha-equivalence, thereby greatly reducing the arguments about bound names. This is a normal strategy for manual proofs about the pi-calculus, but that kind of hand waving has previously been difficult to incorporate smoothly in an interactive theorem prover. We show how the nominal logic formalism and its support in Isabelle accomplishes this and thus significantly reduces the tedium of conducting completely formal proofs. This improves on previous work using weak higher order abstract syntax since we do not need extra assumptions to filter out exotic terms and can keep all arguments within a familiar first-order logic.
description: 36 pages, 3 figures
Die Schriftlichkeit in der Bregenzer Jugendsprache
Creators: name: Hieble, Sabine
Year: 2010

description: Die vorliegende Diplomarbeit beschäftigt sich mit der Schriftlichkeit in der Bregenzer Jugendsprache. Der erste theoretische Teil soll über die bisherige Jugendsprachforschung und die Schwerpunkte, die sich in den letzten Jahrzehnten entwickeln haben, informieren. Einige Modelle der Jugendsprache in Beziehung mit der Standardsprache werden aufgezeigt und diskutiert. Im zweiten Teil wird auf die Schriftlichkeit in der Bregenzer Jugendsprache, welche durch Fragebögen erhoben wurde, eingegangen. Das Hauptaugenmerk liegt auf der schriftlichen Realisierung des Dialekts und die Verwen-dung bestimmter Lexeme.
Centrifugal quantum states of neutrons
Creators: name: Nesvizhevsky, V. V.
name: Petukhov, A. K.
name: Protasov, K. V.
name: Voronin, A. Yu.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method for observation of the quasi-stationary states of neutrons, localized near the curved mirror surface. The bounding effective well is formed by the centrifugal potential and the mirror Fermi-potential. This phenomenon is an example of an exactly solvable "quantum bouncer" problem that could be studied experimentally. It could provide a promising tool for studying fundamental neutron-matter interactions, as well as quantum neutron optics and surface physics effects. We develop formalism, which describes quantitatively the neutron motion near the mirror surface. The effects of mirror roughness are taken into account.
description: 13 pages, 10 figures