cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Linear entropy as an entanglement measure in two-fermion systems
Creators: name: Buscemi, Fabrizio
name: Bordone, Paolo
name: Bertoni, Andrea
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe an efficient theoretical criterion, suitable for indistinguishable particles to quantify the quantum correlations of any pure two-fermion state, based on the Slater rank concept. It represents the natural generalization of the linear entropy used to treat quantum entanglement in systems of non-identical particles. Such a criterion is here applied to an electron-electron scattering in a two-dimensional system in order to perform a quantitative evaluation of the entanglement dynamics for various spin configurations and to compare the linear entropy with alternative approaches. Our numerical results show the dependence of the entanglement evolution upon the initial state of the system and its spin components. The differences with previous analyses accomplished by using the von Neumann entropy are discussed. The evaluation of the entanglement dynamics in terms of the linear entropy results to be much less demanding from the computational point of view, not requiring the diagonalization of the density matrix.
description: 16 pages. Added references in section 1 Corrected typos
Impact of climate change on surface stirring and transport in the Mediterranean Sea
Creators: name: Ser-Giacomi, Enrico
name: Sanchez, Gabriel Jorda
name: Soto-Navarro, Javier
name: Thomsen, Soren
name: Mignot, Juliette
name: Sevault, Florence
name: Rossi, Vincent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Understanding how climate change will affect oceanic fluid transport is crucial for environmental applications and human activities. However, a synoptic characterization of the influence of climate change on mesoscale stirring and transport in the surface ocean is missing. To bridge this gap, we exploit a high-resolution, fully-coupled climate model of the Mediterranean basin using a Network Theory approach. We project significant increases of horizontal stirring and kinetic energies in the next century, likely due to increments of available potential energy. The future evolution of basin-scale transport patterns hint at a rearrangement of the main hydrodynamic provinces, defined as regions of the surface ocean that are well-mixed internally but with minimal cross-flow across their boundaries. This results in increased heterogeneity of province sizes and stronger mixing in their interiors. Our approach can be readily applied to other oceanic regions, providing information for the present and future marine spatial planning.
Optimal quantum gates for semiconductor qubits
Creators: name: Hohenester, Ulrich
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We employ optimal control theory to design optimized quantum gates for solid-state qubits subject to decoherence. At the example of a gate-controlled semiconductor quantum dot molecule we demonstrate that decoherence due to phonon couplings can be strongly suppressed. Our results suggest a much broader class of quantum control strategies in solids.
description: 5 pages, 3 figures
Η εικόνα του ατόμου ως έκφανση του δικαιώματος προσωπικότητας:
Creators: name: Βεζύρογλου, Χάιδω Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Εικόνα
Προσωπικότητα
Μέσα μαζικής ενημέρωσης
Image
Personality
Mass media

description: Aντικείμενο της παρούσας εργασίας είναι η εικόνα του ατόμου ως έκφανση του δικαιώματος της προσωπικότητας. Στο πρώτο μέρος της εργασίας εξετάζονται η έννοια της εικόνας του ατόμο, ο δεσμός της με το δικαίωμα της προσωπικότητας , οι τρόποι επέμβασης σε αυτήν και οι λόγοι που νομιμοποιούν αυτήν την επέμβαση. Στη συνέχεια παρουσιάζονται αναλυτικά τα μέσα προστασίας που παρέχονται στα άτομα που έχουν προσβληθεί από την χρήση της εικόνας τους ιδίως όταν η προσβολή γίνεται μέσω των μέσων μαζικής ενημέρωσης. Ακόμη, ερευνάται η εικόνα του προσωπού από την σκοπιά του νόμου περί προστασίας δεδομένων προσωπικού χαρακτήρα και η επεξεργασία της εικόνας από την διαδικτυακή εφαρμογή google street view.
description: The subject of this thesis is the image of a person as an expresion of the right of personality. The first part of the thesis investigates the concept of the individual's image, it's connection with the right of personality, the intervention policies regarding the image, and the grounds legitimizing this intervention. The next part examines the means of protection provided to people affected by the use of their image, especially when the offence is carried out through mass media. Finally, this thesis analyzes a person’s image according to the personal data protection law, and examines the processing of images from the web application Google Street View.
Probing Neutrino Dark Energy with Extremely High-Energy Cosmic Neutrinos
Creators: name: Ringwald, Andreas
name: Schrempp, Lily
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, a new non-Standard Model neutrino interaction mediated by a light scalar field was proposed, which renders the big-bang relic neutrinos of the cosmic neutrino background a natural dark energy candidate, the so-called Neutrino Dark Energy. As a further consequence of this interaction, the neutrino masses become functions of the neutrino energy densities and are thus promoted to dynamical, time/redshift dependent quantities. Such a possible neutrino mass variation introduces a redshift dependence into the resonance energies associated with the annihilation of extremely high-energy cosmic neutrinos on relic anti-neutrinos and vice versa into Z-bosons. In general, this annihilation process is expected to lead to sizeable absorption dips in the spectra to be observed on earth by neutrino observatories operating in the relevant energy region above 10^13 GeV. In our analysis, we contrast the characteristic absorption features produced by constant and varying neutrino masses, including all thermal background effects caused by the relic neutrino motion. We firstly consider neutrinos from astrophysical sources and secondly neutrinos originating from the decomposition of topological defects using the appropriate fragmentation functions. On the one hand, independent of the nature of neutrino masses, our results illustrate the discovery potential for the cosmic neutrino background by means of relic neutrino absorption spectroscopy. On the other hand, they allow to estimate the prospects for testing its possible interpretation as source of Neutrino Dark Energy within the next decade by the neutrino observatories ANITA and LOFAR.
description: 38 pages, 19 figures
Lower leg compression and its biomechanical effects on the soft tissues of the leg
Creators: name: Chassagne, Fanette
name: Badel, Pierre
name: Molimard, Jérôme
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Elastic compression of the lower leg is the traditional preventive and curative treatment of venous insufficiency. After presenting the medical strategies related to compression therapies, this chapter develops current advances in clinics as well as in engineering and outline the more important knowledge arising from this review. Compression hosiery acts by providing pressure to the leg. Pressure generation using socks mainly depends on the stiffness and the size of the socks, the size of the leg, but also the leg morphology. In the case of bandages, the role of friction must be outlined, as the main factor in maintaining the bandage wrapped around the leg, but also as an influencing factor in pressure generation. Besides generated pressure, response of superficial veins to compression also depends on the vein size and the fat stiffness. But mechanical assessments should not mask the importance of other factors such as muscular contraction or nurse formation. An important impact of these results would be head towards an improved personalization of compression treatment.
Raman transitions driven by phase-modulated light in a cavity atom interferometer
Creators: name: Kristensen, Sofus L.
name: Jaffe, Matt
name: Xu, Victoria
name: Panda, Cristian D.
name: Müller, Holger
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Atom interferometers in optical cavities benefit from strong laser intensities and high-quality wavefronts. The laser frequency pairs that are needed for driving Raman transitions (often generated by phase modulating a monochromatic beam) form multiple standing waves in the cavity, resulting in a periodic spatial variation of the properties of the atom-light interaction along the cavity axis. Here, we model this spatial dependence and calculate two-photon Rabi frequencies and ac Stark shifts. We compare the model to measurements performed with varying cavity and pulse parameters such as cavity offset from the carrier frequency and the longitudinal position of the atom cloud. We show how setting cavity parameters to optimal values can increase the Raman transition efficiency at all positions in the cavity and nearly double the contrast in a Mach-Zehnder cavity atom interferometer in comparison to the unoptimized case.
description: 6 pages, 4 figures, plus two appendices
Magnetization dynamics in the single-molecule magnet Fe8 under pulsed microwave irradiation
Creators: name: Petukhov, K.
name: Bahr, S.
name: Wernsdorfer, W.
name: Barra, A. -L.
name: Mosser, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present measurements on the single molecule magnet Fe8 in the presence of pulsed microwave radiation at 118 GHz. The spin dynamics is studied via time resolved magnetization experiments using a Hall probe magnetometer. We investigate the relaxation behavior of magnetization after the microwave pulse. The analysis of the experimental data is performed in terms of different contributions to the magnetization after-pulse relaxation. We find that the phonon bottleneck with a characteristic relaxation time of 10 to 100 ms strongly affects the magnetization dynamics. In addition, the spatial effect of spin diffusion is evidenced by using samples of different sizes and different ways of the sample's irradiation with microwaves.
description: 14 pages, 12 figures
Half-metallic ferromagnetism induced by dynamic electron correlations in VAs
Creators: name: Chioncel, L.
name: Mavropoulos, Ph.
name: Ležaić, M.
name: Blügel, S.
name: Arrigoni, E.
name: Katsnelson, M. I.
name: Lichtenstein, A. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic structure of the VAs compound in the zinc-blende structure is investigated using a combined density-functional and dynamical mean-field theory approach. Contrary to predictions of a ferromagnetic semiconducting ground state obtained by density-functional calculations, dynamical correlations induce a closing of the gap and produce a half-metallic ferromagnetic state. These results emphasize the importance of dynamic correlations in materials suitable for spintronics.
description: Published in Phys. Rev. Lett. 96, 197203 (2006)
Debris flows in the southern Coast Mountains, British Columbia : dynamic behaviour and physical properties
Creators: name: Jordan, Robert Peter
Publisher: name: University of British Columbia
Year: 2009

description: Debris flows in the southern Coast Mountains exhibit different dynamic and sedimentologic characteristics, depending on the lithology of their source areas. Fine-textured debris flows originating in the Quaternary volcanic complexes are much more mobile than those originating in the coarse-textured plutonic rocks which form most of this mountain range. Mobility can be described as the velocity of flow, the distance of travel of debris flows, and the slope required to sustain flow. The objectives of this study are to examine the effect of different sediment composition on the mobility of debris flows, and to determine which rheologic models are most applicable for modeling debris flows in these geologic environments. About 25 debris flow events in or adjacent to the southern Coast Mountains were examined, ranging in volume from 10² m³ to over 10⁷ m³. Field methods included sampling of grain-size distribution, measurement of the deposit and channel dimensions, and observation of the stratigraphy of debris flow fans. Shear strength, permeability, and consolidation tests were performed on samples of reconstituted debris, representative of typical fine-textured and coarsetextured debris flows. These samples were also used to model debris flows in a flume. The coarse-textured, plutonic-source, debris flows typically had a distinct, inverselygraded, clast-supported, surface layer of cobbles and boulders. Their deposits tended to be irregular in thickness, with lobes and levees of coarse material. The fine-textured, volcanicsource, debris flows had no such surface layer, and their deposits were generally uniform in thickness and surface morphology. These observations, and corroborating evidence from the flume results, suggest that fine-textured debris flows behave according to the Bingham flow model, while coarse-textured debris flows can be better described by a granular, or dilatant, flow model. A clay content of about 4% in the matrix (sub-4 mm material) is a useful measure to distinguish the two populations. Several debris flow events of intermediate behaviour and sediment composition were also examined. The permeability of the debris, and hence its rate of consolidation, is an important factor controlling mobility. The volume of debris flow events was found to be the most significant factor controlling runout distance.
Η επίδραση του μετρό στις χρήσεις και τις αξίες γής και ακινήτων: η περίπτωση των υπό κατασκευή σταθμών Αγίας Σοφίας και Βενιζέλου
Creators: name: Τσολάκος, Φώτιος Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: χρήσεις γης
αξίες γης και ακινήτων
αστικός χώρος
land uses
land values
property values
urban space
urban planning
Metro
Thessaloniki
Greece

description: Στην παρούσα Διπλωματική εργασία με θέμα «Η επίδραση του Μετρό στις χρήσεις και τις αξίες γης και ακινήτων: η περίπτωση των υπό κατασκευή Σταθμών Αγίας Σοφίας και Βενιζέλου» πραγματοποιείται μια προσπάθεια προσέγγισης του ζητήματος του τρόπου με τον οποίο επιδρούν οι εργασίες κατασκευής του Μετρό και η πλήρης λειτουργία του έργου στην ανάπτυξη των σχεδίων χρήσεων γης αλλά και οι αξίες γης και ακινήτων σε μια περιοχή περιμετρικά, η οποία χαρακτηρίζεται ως ζώνη επιρροής («ακτίνα επιρροής») του έργου, των Σταθμών. Έτσι, η εργασία στηρίζεται στη μελέτη των εννοιών των «χρήσεων γης», των «αξιών γης», των «αξιών ακινήτων» στον αστικό χώρο και στη διαδικασία του αστικού προγραμματισμού – σχεδιασμού.
description: The current dissertation, with title “The effect of Metro line in the land uses and in the land and property values: the case study of the under construction stations of Ag. Sofia and Venizelou”, approaches the way with which the construction works and the final operation of the underground may affect the development of the land uses plans but also the land and property values in an area perimetrically, which is being characterized as an area of influence (“field of influence”) of the particular project. Thus, the dissertation is focused to the study of the meanings of “land uses”, “land values” and “property values” in the urban space and in the process of urban planning.
On exponential moments of the homogeneous Boltzmann equation for hard potentials without cutoff
Creators: name: Fournier, Nicolas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 82C40

description: We consider the spatially homogeneous Boltzmann equation for hard potentials without cutoff. We prove that an exponential moment of order $ρ=\min\{2γ/(2-ν),2\}$, with the usual notation, is immediately created. This is stronger than what happens in the case with cutoff. We also show that exponential moments of order $ρ\in (0,2]$ are propagated.
Could humans recognize odor by phonon assisted tunneling?
Creators: name: Brookes, Jennifer C.
name: Hartoutsiou, Filio
name: Horsfield, A. P.
name: Stoneham, A. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Our sense of smell relies on sensitive, selective atomic-scale processes that are initiated when a scent molecule meets specific receptors in the nose. However, the physical mechanisms of detection are not clear. While odorant shape and size are important, experiment indicates these are insufficient. One novel proposal suggests inelastic electron tunneling from a donor to an acceptor mediated by the odorant actuates a receptor, and provides critical discrimination. We test the physical viability of this mechanism using a simple but general model. Using values of key parameters in line with those for other biomolecular systems, we find the proposed mechanism is consistent both with the underlying physics and with observed features of smell, provided the receptor has certain general properties. This mechanism suggests a distinct paradigm for selective molecular interactions at receptors (the swipe card model): recognition and actuation involve size and shape, but also exploit other processes.
description: 10 pages, 1 figure
Dispersive effects on optical information storage in Bose-Einstein condensates with ultra-slow short pulses
Creators: name: Tarhan, Devrim
name: Sennaroglu, Alphan
name: Mustecaplioglu, Ozgur E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the potential of atomic Bose-Einstein condensates as dynamic memory devices for coherent optical information processing. Specifically, the number of ultraslow pulses that can be simultaneously present within the storage time in the condensate has been analyzed. By modeling short-pulse propagation through the condensate, taking into account high-order dispersive properties, constraints on the information storage capacity are discussed. The roles of temperature, spatial inhomogeneity, the interatomic interactions, and the coupling laser on the pulse shape are pointed out. For a restricted set of parameters, it has been found that coherent optical information storage capacity would be optimized.
description: 32 pages, 12 figures
Non-finite type étale sites over fields
Creators: name: Dhamore, Sujeet
name: Hogadi, Amit
name: Pawar, Rakesh
Publisher: name: arXiv
Year: 2024
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F20, 14F35, 14F42 (Primary), 12G05, 12G10 (Secondary)

description: We consider the notion of finite type-ness of a site introduced by Morel and Voevodsky, for the étale site of a field. For a given field $k$, we conjecture that the étale site of $Sm/k$ is of finite type if and only if the field $k$ admits a finite extension of finite cohomological dimension. We prove this conjecture in some cases, e.g. in the case when $k$ is countable, or in the case when the $p$-cohomological dimension $cd_p(k)$ is infinite for infinitely many primes $p$.
description: 9 pages. Introduction revised. Appendix added
Back to the Future: Revisiting Mouse and Keyboard Interaction for HMD-based Immersive Analytics
Creators: name: Grubert, Jens
name: Ofek, Eyal
name: Pahud, Michel
name: Kristensson, Per Ola
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.2

description: With the rise of natural user interfaces, immersive analytics applications often focus on novel forms of interaction modalities such as mid-air gestures, gaze or tangible interaction utilizing input devices such as depth-sensors, touch screens and eye-trackers. At the same time, traditional input devices such as the physical keyboard and mouse are used to a lesser extent. We argue, that for certain work scenarios, such as conducting analytic tasks at stationary desktop settings, it can be valuable to combine the benefits of novel and established input devices as well as input modalities to create productive immersive analytics environments.
Non-ionizing cross section of electron scattering on atoms in matter accounting for dynamical screening effect
Creators: name: Medvedev, N.
name: Zainutdinov, D. I.
name: Volkov, A. E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a model of non-ionizing scattering of electrons on atomic ensemble in matter, applicable in a wide electron energy range from ~eV up to relativistic ones. The approach based on the dynamic-structure factor formalism considers collective response of the atomic and electronic systems of a target. It accounts for dynamical screening of atomic nuclei in matter by valence (collective) and core-shell electrons during the scattering events, dependent on the incident electron velocity. The proposed formalism for the cross section enables us to describe in a unified manner the electron scattering on the ensemble of isolated atomic nuclei at high incident electron energies, reducing to the scattering on phonons with decrease of the energy. Our model can be used, e.g., in transport Monte Carlo codes to describe the energy exchange between excited electrons and atomic ensemble in matter. An example of swift heavy ion track formation in quartz simulated with the proposed cross section shows a reasonable agreement with the experiment validating the model.
On-Device Tag Generation for Unstructured Text
Creators: name: Chugani, Manish
name: Vatsal, Shubham
name: Ramena, Gopi
name: Moharana, Sukumar
name: Purre, Naresh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: With the overwhelming transition to smart phones, storing important information in the form of unstructured text has become habitual to users of mobile devices. From grocery lists to drafts of emails and important speeches, users store a lot of data in the form of unstructured text (for eg: in the Notes application) on their devices, leading to cluttering of data. This not only prevents users from efficient navigation in the applications but also precludes them from perceiving the relations that could be present across data in those applications. This paper proposes a novel pipeline to generate a set of tags using world knowledge based on the keywords and concepts present in unstructured textual data. These tags can then be used to summarize, categorize or search for the desired information thus enhancing user experience by allowing them to have a holistic outlook of the kind of information stored in the form of unstructured text. In the proposed system, we use an on-device (mobile phone) efficient CNN model with pruned ConceptNet resource to achieve our goal. The architecture also presents a novel ranking algorithm to extract the top n tags from any given text.
Possible Implications of Mass Accretion in Eta Carinae
Creators: name: Kashi, Amit
name: Soker, Noam
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We apply the previously suggested accretion model for the behavior of the super-massive binary system Eta Carinae close to periastron passages. In that model it is assumed that for ~10 weeks near periastron passages one star is accreting mass from the slow dense wind blown by the other star. We find that the secondary, the less massive star, accretes ~2x10^{-6}Mo. This mass possesses enough angular momentum to form a disk, or a belt, around the secondary. The viscous time is too long for the establishment of equilibrium, and the belt must be dissipated as its mass is being blown in the reestablished secondary wind. This processes requires about half a year, which we identify with the recovery phase of Eta Carinae. We show that radiation pressure, termed radiative braking, cannot prevent accretion. In addition to using the commonly assumed binary model for Eta Carinae, we also examine alternative models where the stellar masses are larger, and/or the less massive secondary blows the slow dense wind, while the primary blows the tenuous fast wind and accretes mass for ~10 weeks near periastron passages. We end by some predictions for the next event (January-March 2009).
description: New Astronomy, in press
Modulating Electronic Structure of Monolayer Transition Metal Dichalcogenides by Substitutional Nb-Doping
Creators: name: Tang, Lei
name: Xu, Runzhang
name: Tan, Junyang
name: Luo, Yuting
name: Zou, Jingyun
name: Zhang, Zongteng
name: Zhang, Rongjie
name: Zhao, Yue
name: Lin, Junhao
name: Zou, Xiaolong
name: Liu, Bilu
name: Cheng, Hui-Ming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Modulating electronic structure of monolayer transition metal dichalcogenides (TMDCs) is important for many applications and doping is an effective way towards this goal, yet is challenging to control. Here we report the in-situ substitutional doping of niobium (Nb) into TMDCs with tunable concentrations during chemical vapour deposition. Taking monolayer WS2 as an example, doping Nb into its lattice leads to bandgap changes in the range 1.98 eV to 1.65 eV. Noteworthy, electrical transport measurements and density functional theory calculations show that the 4d electron orbitals of the Nb dopants contribute to the density of states of Nb-doped WS2 around the Fermi level, resulting in an n to p-type conversion. Nb-doping also reduces the energy barrier of hydrogen absorption in WS2, leading to an improved electrocatalytic hydrogen evolution performance. These results highlight the effectiveness of controlled doping in modulating the electronic structure of TMDCs and their use in electronic related applications.
description: 20 pages, 5 figures
Many-body perturbation procedure for energy-dependent perturbation: Merging many-body perturbation theory with QED
Creators: name: Lindgren, Ingvar
name: Salomonson, Sten
name: Hedendahl, Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A formalism for energy-dependent many-body perturbation theory (MBPT), previously indicated in our recent review articles (Lindgren et al., Phys.Rep. 389,161(2004), Can.J.Phys. 83,183(2005)), is developed in more detail. The formalism allows for a mixture of energy-dependent (retarded) and energy-independent (instantaneous) interactions and hence for a merger of QED and standard (relativistic) MBPT. This combination is particularly important for light elements, such as light heliumlike ions, where electron correlation is pronounced. It can also be quite significant in the medium-heavy mass range, as recently discussed by Fritzsche et al. (J.Phys. B38,S707(2005)), with the consequence that the effects might be significant also in analyzing the data of experiments with highly charged ions. A numerical procedure for treating the combined effect is described, and some preliminary numerical results are given for heliumlike ions. This represent the first numerical evaluation of effects beyond two-photon exchange involving a retarded interaction. It is found that for heliumlike neon the effect of one retarded photon (with Coulomb interactions of all orders) represents about 99% of the non-radiative effects beyond energy-independent MBPT.
Large-Scale Vortex Motion and Multiple Plasmoid Ejection Due to Twisting Prominence Threads and Associated Reconnection
Creators: name: Mishra, Sudheer K.
name: Srivastava, Abhishek K.
name: Chen, P. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We analyze the characteristics of a quiescent polar prominence using the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). Initially, small-scale barb-like structures are evident on the solar disk, which firstly grow vertically and thereafter move towards the south-west limb. Later, a spine connects these barbs and we observe apparent rotating motions in the upper part of the prominence. These apparent rotating motions might play an important role for the evolution and growth of the filament by transferring cool plasma and magnetic twist. The large-scale vortex motion is evident in the upper part of the prominence, and consists of a swirl-like structure within it. The slow motion of the footpoint twists the legs of the prominence due to magnetic shear, causing two different kinds of magnetic reconnection. The internal reconnection is initiated by a resistive tearing-mode instability, which leads to the formation of multiple plasmoids in the elongated current sheet. The estimated growth rate was found to be 0.02--0.05. The magnetic reconnection heats the current sheet for a small duration. However, most of the energy release due to magnetic reconnection is absorbed by the surrounding cool and dense plasma and used to accelerate the plasmoid ejection. The multiple plasmoid ejections destroy the current sheet. Therefore, the magnetic arcades collapse near the X-point. Oppositely directed magnetic arcades may reconnect with the southern segment of the prominence and an elongated thin current sheet is formed. This external reconnection drives prominence eruption.
description: 21 pages, 11 figures, Accepted for publication in Solar Physicss
Rigorous derivation of the Whitham equations from the water waves equations in the shallow water regime
Creators: name: Emerald, Louis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We derive the Whitham equations from the water waves equations in the shallow water regime using two different methods, thus obtaining a direct and rigorous link between these two models. The first one is based on the construction of approximate Riemann invariants for a Whitham-Boussinesq system and is adapted to unidirectional waves. The second one is based on a generalisation of Birkhoff's normal form algorithm for almost smooth Hamiltonians and is adapted to bidirectional propagation. In both cases we clarify the improved accuracy on the fully dispersive Whitham model with respect to the long wave Korteweg-de Vries approximation.
Resonances in three-body systems with short and long-range interactions
Creators: name: Garrido, E.
name: Fedorov, D. V.
name: Jensen, A. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The complex scaling method permits calculations of few-body resonances with the correct asymptotic behaviour using a simple box boundary condition at a sufficiently large distance. This is also valid for systems involving more than one charged particle. We first apply the method on two-body systems. Three-body systems are then investigated by use of the (complex scaled) hyperspheric adiabatic expansion method. The case of the 2$^+$ resonance in $^6$Be and $^6$Li is considered. Radial wave functions are obtained showing the correct asymptotic behaviour at intermediate values of the hyperradii, where wave functions can be computed fully numerically.
description: invited talk at the 18th International Conference on Few-Body Problems in Physics, Santos-S.Paulo, August 21-26, 2006
Optoelectronic switching of addressable molecular crossbar junctions
Creators: name: Li, J. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This letter reports on the observation of optoelectronic switching in addressable molecular crossbar junctions fabricated using polymer stamp-printing method. The active medium in the junction is a molecular self-assembled monolayer softly sandwiched between gold electrodes. The molecular junctions are investigated through currentvoltage measurements at varied temperature (from 95 to 300 K) in high vacuum condition. The junctions show reversible optoelectronic switching with the highest on/off ratio of 3 orders of magnitude at 95 K. The switching behavior is independent of both optical wavelength and molecular structure, while it strongly depends on the temperature. Initial analysis indicates that the distinct binding nature of the molecule/electrode interfaces play a dominant role in the switching performance.
description: 5 pages, 4 figures,original manuscript to be submitted
Team Alex at CLEF CheckThat! 2020: Identifying Check-Worthy Tweets With Transformer Models
Creators: name: Nikolov, Alex
name: Martino, Giovanni Da San
name: Koychev, Ivan
name: Nakov, Preslav
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: I.2.7
subject: 68T50

description: While misinformation and disinformation have been thriving in social media for years, with the emergence of the COVID-19 pandemic, the political and the health misinformation merged, thus elevating the problem to a whole new level and giving rise to the first global infodemic. The fight against this infodemic has many aspects, with fact-checking and debunking false and misleading claims being among the most important ones. Unfortunately, manual fact-checking is time-consuming and automatic fact-checking is resource-intense, which means that we need to pre-filter the input social media posts and to throw out those that do not appear to be check-worthy. With this in mind, here we propose a model for detecting check-worthy tweets about COVID-19, which combines deep contextualized text representations with modeling the social context of the tweet. We further describe a number of additional experiments and comparisons, which we believe should be useful for future research as they provide some indication about what techniques are effective for the task. Our official submission to the English version of CLEF-2020 CheckThat! Task 1, system Team_Alex, was ranked second with a MAP score of 0.8034, which is almost tied with the wining system, lagging behind by just 0.003 MAP points absolute.
description: Check-worthiness; Fact-Checking; Veracity
Tracing CP-violation in Lepton Flavor Violating Muon Decays
Creators: name: Farzan, Yasaman
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Although the Lepton Flavor Violating (LFV) decay $μ^+\to e^+ γ$ is forbidden in the Standard Model (SM), it can take place within various theories beyond the SM. If the branching ratio of this decay saturates its present bound [{\it i.e.,} Br$(μ^+ \to e^+γ)\sim 10^{-11}$], the forthcoming experiments can measure the branching ratio with high precision and consequently yield information on the sources of LFV. In this letter, we show that for polarized $μ^+$, by studying the angular distribution of the transversely polarized positron and linearly polarized photon we can derive information on the CP-violating sources beyond those in the SM. We also study the angular distribution of the final particles in the decay $μ^+\to e^+_1 e^- e^+_2$ where $e^+_1$ is defined to be the more energetic positron. We show that transversely polarized $e_1^+$ can provide information on a certain combination of the CP-violating phases of the underlying theory which would be lost by averaging over the spin of $e^+_1$.
description: 6 pages, 2 figures
title: ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÑÐ¾Ð²Ð½Ñ Ð¶Ð¸Ð·Ð½Ð¸ Ð½Ð°ÑÐµÐ»ÐµÐ½Ð¸Ñ ÑÐµÐ³Ð¸Ð¾Ð½Ð° Ð½Ð° ÐºÐ¾Ð³Ð½Ð¸ÑÐ¸Ð²Ð½ÑÑ ÐºÐ°ÑÑÐ°Ñ
title: Modeling processes of changes in the standard of living of the population of the region on cognitive maps
Creators: name: Ð¢ÐºÐ°ÑÐµÐ½ÐºÐ¾, Ð®Ð»Ð¸Ñ
name: "Ð¡Ð¸ÑÑÐµÐ¼Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð² Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ð¸", Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ Ð½Ð°ÑÑÐ½Ð¾-Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ (27; 2023; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2024
Subjects: ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð¡Ð¸ÑÑÐµÐ¼Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·
Ð½Ð°ÑÐµÐ»ÐµÐ½Ð¸Ðµ
ÑÑÐ¾Ð²ÐµÐ½Ñ Ð¶Ð¸Ð·Ð½Ð¸
ÑÑÐµÐ½Ð°ÑÐ¸Ð¹
ÐºÐ¾Ð³Ð½Ð¸ÑÐ¸Ð²Ð½Ð°Ñ ÐºÐ°ÑÑÐ°
population
standard of living
scenario
cognitive map

description: Ð£ÑÐ¾Ð²ÐµÐ½Ñ Ð¶Ð¸Ð·Ð½Ð¸ Ð½Ð°ÑÐµÐ»ÐµÐ½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐ¼ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¼ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¼ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸ Ð½Ð°ÑÐµÐ»ÐµÐ½Ð¸Ñ Ð¸ Ð¿ÑÐ¾Ð³Ð½Ð¾Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÐµÐ³Ð¾ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ð¹ Ð²Ð°Ð¶Ð½Ð¾ Ð´Ð»Ñ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÑÐ°ÑÐµÐ³Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹. Ð ÑÑÐ°ÑÑÐµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÐºÐ¾Ð³Ð½Ð¸ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð¸Ð¼Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÐ½Ð´ÐµÐ½ÑÐ¸Ð¹ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÑÐ¾Ð²Ð½Ñ Ð¶Ð¸Ð·Ð½Ð¸ Ð½Ð°ÑÐµÐ»ÐµÐ½Ð¸Ñ Ð² ÑÐµÐ³Ð¸Ð¾Ð½Ðµ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð Ð¾ÑÑÐ¾Ð²ÑÐºÐ¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð´Ð°Ð½Ð½ÑÐµ Ð¾ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐµ ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð½Ð°ÑÐµÐ»ÐµÐ½Ð¸Ñ Ð¾Ð±Ð»Ð°ÑÑÐ¸ Ð¸ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð¶Ð¸Ð·Ð½Ð¸. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÐºÐ¾Ð³Ð½Ð¸ÑÐ¸Ð²Ð½Ð°Ñ ÐºÐ°ÑÑÐ°, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐµÐ½Ð°ÑÐ¸ÐµÐ² Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾Ð³Ð¾ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¹ Ð½Ð° Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¿Ð¾Ð´ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸ÐµÐ¼ Ð²Ð½ÑÑÑÐµÐ½Ð½Ð¸Ñ Ð¸ Ð²Ð½ÐµÑÐ½Ð¸Ñ ÑÐ°ÐºÑÐ¾ÑÐ¾Ð², Ð²Ð»Ð¸ÑÑÑÐ¸Ñ Ð½Ð° ÑÑÐ¾Ð²ÐµÐ½Ñ Ð¶Ð¸Ð·Ð½Ð¸.
description: The standard of living of the population is the main economic indicator of the quality of life of the population, and forecasting its changes is important for making informed strategic management decisions. The article presents the results of cognitive simulation modeling of trends in the standard of living of the population in the region using the example of the Rostov region. Data on the dynamics of the regionâs population and quality of life are provided. A cognitive map was developed and analyzed, impulse modeling of scenarios of possible development of situations was carried out on the model under the influence of internal and external factors affecting the standard of living.
Moral climate and the development of moral reasoning: the effects of dyadic discussions between young offenders
Creators: name: Taylor, John Harrison
Publisher: name: University of British Columbia
Year: 2009

description: Cognitive-developmental theory claims that moral reasoning ordinarily progresses through distinct stages, and that such development can be stimulated by discussion with others, especially discussions involving exposure to higher-stage reasoning. The concern of this study was the social/contextual factors that interact with cognitive processes involved in the development of moral reasoning. Two types of such factors were studied: namely, sociometric status and intensity of moral education program. The first of these could be studied because the participants were residents of a facility for young offenders (a total institution), characterized by an obvious and rigid hierarchical peer status system within the culture. The second factor could be studied because the participants were drawn from three residential units within the larger center, which varied significantly in terms of their program activities (specifically, unit meetings), and hence their moral climates. A total of 101 young offenders served as participants. They were assessed for moral reasoning, their perceptions of moral and institutional climate, and also through behavioral ratings - all at the pretest and at the 1-month posttest. The three levels of program were reflected in the institutional and moral climate measures. As well, better climates were associated with improvements in behavior and lesser climates with reductions in prosocial behavior. It was concluded that moral climate represents a valid measure of the factors which predict behavior within and following release from institutional settings. In order to study the effects of peer status, 40 participants served as target subjects who engaged in moral dilemma discussions with one other subject, each day for 3 consecutive days. According to cognitive-developmental theory, a dyadic intervention such as the one used here would be expected to stimulate the moral reasoning competence of the participant who is lower in that ability. However, the dyads were formed in such a way that some of the high stage participants (who would be expected to have an influence on their partner) were of significantly lower peer status. It was found that both exposure to higher-stage reasoning and higher peer status were necessary but not sufficient elements within this developmental process, consistent with the Piagetian notions regarding peer interaction and disequilibration.
Τρόποι πληρωμής νοσηλευτικών ιδρυμάτων: Ελληνική και διεθνής πρακτική:
Creators: name: Ραϊνάκης, Ιωάννης Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: τρόποι πληρωμής
νοσηλευτικά ιδρύματα
δημόσιος
funding
hospitals
public

description: Η παρούσα μελέτη διερευνά τους τρόπους χρηματοδότησης των νοσοκομείων στην Ελλάδα και διεθνώς ,στο πλαίσιο των σύγχρονων μεταρρυθμίσεων των συστημάτων υγείας. Το θέμα βρίσκεται στην επικαιρότητα επειδή ο στόχος της πολιτικής υγείας των ευρωπαϊκών κρατών είναι η αναζήτηση μεθόδων αποζημίωσης των νοσηλευτικών ιδρυμάτων που να περιορίζουν και να ορθολογικοποιούν τους πόρους που διοχετεύονται στα δημόσια συστήματα περίθαλψης. Η μεθοδολογία που χρησιμοποιήθηκε βασίστηκε στη συλλογή, διασταύρωση και επεξεργασία πρωτογενών και δευτερογενών πηγών από εθνικούς και διεθνείς οργανισμούς με κυριότερες πηγές άντλησης των παραπάνω, την ελληνική και διεθνή βιβλιογραφία, καθώς και το διαδίκτυο.Η διεθνής εμπειρία αποδεικνύει ότι, το πρότυπο των ΗΠΑ ελκύει όλο και περισσότερο το ενδιαφέρον των ευρωπαϊκών χωρών, εκτός από την Ελλάδα η οποία ακολουθεί την ανεξάρτητη περιθωριακή της πορεία, αδυνατώντας να προβεί σε ριζικές αλλαγές τομέων της δημόσιας διοίκησης. Η μελέτη αναδεικνύει τους τρόπους προοπτικής αποζημίωσης ως τους καταλληλότερους για την αναβάθμιση της ποιότητας και την ελαχιστοποίηση του κόστους, ιδιαίτερα στις οικονομίες που εμφανίζουν μεγάλα δημοσιονομικά ελλείμματα και πλήττονται από τη σύγχρονη οικονομική και κοινωνική κρίση.
description: This study explores the funding methods of hospitals in Greece and all over the world, under the current health systems reforms. This issue is of high importance nowadays, because the health policy objective in Europe is to seek ways to compensate hospitals, by reducing and rationalizing the resources channeled to public health care systems. The methodology used was based on the collection and processing primary and secondary sources from national and international organizations. In particular, the major sources were the Greek and international literature as well as the internet.International experience shows that the U.S. model attracts more and more interest in European countries, except Greece, which follows an independent path of marginalizing, unable to make radical changes in public administration sectors.Finally, this study illustrates the method of "compensation perspective" as most appropriate for enhancing quality and minimizing costs, especially in economies that have large budget deficits and are affected by contemporary economic and social crisis.
Reconstruction of radio signals from air-showers with autoencoder
Creators: name: Bezyazeekov, Pavel
name: Budnev, Nikolay
name: Fedorov, Oleg
name: Gress, Oleg
name: Grishin, Oleg
name: Haungs, Andreas
name: Huege, Tim
name: Kazarina, Yulia
name: Kleifges, Matthias
name: Kostunin, Dmitriy
name: Korosteleva, Elena
name: Kuzmichev, Leonid
name: Lenok, Vladimir
name: Lubsandorzhiev, Nima
name: Malakhov, Stanislav
name: Marshalkina, Tatyana
name: Monkhoev, Roman
name: Osipova, Eleonora
name: Pakhorukov, Alexandr
name: Pankov, Leonid
name: Prosin, Vasiliy
name: Schröder, Frank
name: Shipilov, Dmitriy
name: Zagorodnikov, Alexey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Tunka Radio Extension (Tunka-Rex) is a digital antenna array (63 antennas distributed over 1km^2) co-located with the TAIGA observatory in Eastern Siberia. Tunka-Rex measures radio emission of air-showers induced by ultra-high energy cosmic rays in the frequency band of 30-80 MHz. Air-shower signal is a short (tens of nanoseconds) broadband pulse. Using time positions and amplitudes of these pulses, we reconstruct parameters of air showers and primary cosmic rays. The amplitudes of low-energy event (E<10^17 eV) cannot be used for successful reconstruction due to the domination of background. To lower the energy threshold of the detection and increase the efficiency, we use autoencoder neural network which removes noise from the measured data. This work describes our approach to denoising raw data and further reconstruction of air-shower parameters. We also present results of the low-energy events reconstruction with autoencoder.
Microbial transformation of geniposide in Gardeniae Fructus under the fermentation with Aspergillus niger DQWM-G11
Creators: name: Xu, Xiao-Xin
name: Li, Xue-Jiao
name: Pan, Ke-Wen
name: Deng, Liang
name: Xia, Shu-Biao
name: Dong, Jian-Wei
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Gardeniae Fructus, the dried fruit of Gardenia jasminoides, was fermented with Aspergillus niger DQWM-G11. The antibacterial activities of the fermented and non-fermented products were measured and the transformation of chemical constituents was detected. The results revealed that A. niger DQWM-G11 fermented Gardeniae Fructus (AFGF) possessed a stronger antibacterial effect with a minimal inhibitory concentration (MIC) value of 256 μg/mL, compared to the raw material (MIC: > 1024 μg/mL). An undescribed microbial transformation reaction was discovered, where geniposide (1) was transformed into 1β-methoxyl-4-epigardendiol (2), which was then verified. The produced component exhibited a stronger antibacterial effect (MIC: 256 μg/mL) than raw geniposide (1) (MIC: >1024 μg/mL), indicating that the increased activity of Gardeniae Fructus was due to the biotransformation. The discovery of this microbial transformation reaction will provide an important theoretical basis for further developing and applying Gardeniae Fructus and geniposide.