cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Restorative Justice
Creators: name: Herr, Robert
name: Herr, Judy Z.
name: Zimmerman Herr, Judy
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 49 Nr. 4 (2000): Ökumenische Rundschau, Band 49, Heft 4
Autonomous Outdoor Scanning via Online Topological and Geometric Path Optimization
Creators: name: Huang, Pengdi
name: Lin, Liqiang
name: Xu, Kai
name: Huang, Hui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Autonomous 3D acquisition of outdoor environments poses special challenges. Different from indoor scenes, where the room space is delineated by clear boundaries and separations (e.g., walls and furniture), an outdoor environment is spacious and unbounded (thinking of a campus). Therefore, unlike for indoor scenes where the scanning effort is mainly devoted to the discovery of boundary surfaces, scanning an open and unbounded area requires actively delimiting the extent of scanning region and dynamically planning a traverse path within that region. Thus, for outdoor scenes, we formulate the planning of an energy-efficient autonomous scanning through a discrete-continuous optimization of robot scanning paths. The discrete optimization computes a topological map, through solving an online traveling sales problem (Online TSP), which determines the scanning goals and paths on-the-fly. The dynamic goals are determined as a collection of visit sites with high reward of visibility-to-unknown. A visit graph is constructed via connecting the visit sites with edges weighted by traversing cost. This topological map evolves as the robot scans via deleting outdated sites that are either visited or become rewardless and inserting newly discovered ones. The continuous part optimizes the traverse paths geometrically between two neighboring visit sites via maximizing the information gain of scanning along the paths. The discrete and continuous processes alternate until the traverse cost of the current graph exceeds the remaining energy capacity of the robot. Our approach is evaluated with both synthetic and field tests, demonstrating its effectiveness and advantages over alternatives. The project is at http://vcc.szu.edu.cn/research/2020/Husky, and the codes are available at https://github.com/alualu628628/Autonomous-Outdoor-Scanning-via-Online-Topological-and-Geometric-Path-Optimization.
description: Accepted by IEEE Transactions on Intelligent Transportation Systems
Performance evaluation of two transport protocols for image transmission over CDPD networks
Creators: name: Zhou, Jun
Publisher: name: University of British Columbia
Year: 2009

description: Due to the low bandwidth and harsh noise characteristics of cellular wireless networks, the transmission of images over these networks may require a long time, especially if the transport protocol used is the standard Transmission Control Protocol (TCP), which has been tuned for more reliable wireline networks. In this thesis, we study and compare the performance of two efficient image transmission schemes suitable for low bit rate wireless data networks. The Cellular Digital Packet Data (CDPD) network is chosen as the example wireless data network in this research. Scheme 1 uses the standard TCP in conjunction with a flexible image transmission strategy, in which the amount of image data sent is negotiated by the client according to a desired image quality. Scheme 2 uses a new file transfer protocol called Image File Transfer Protocol (IFTP), and is built on the top of the User Datagram Protocol (UDP) in the transport layer. IFTP keeps the error and retransmission control in the application, and transmits the progressive JPEG image scan by scan in a sequence according to the scan priorities. An extensive OPNET model is developed for the performance evaluation of the two proposed image transmission schemes. Simulation results show that IFTP is functionally sound in a multi-link network and outperforms the TCP-based scheme in terms of image transmission time.
Testing for Markovian Character and Modeling of Intermittency in Solar Wind Turbulence
Creators: name: Strumik, Marek
name: Macek, Wieslaw M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present results of statistical analysis of solar wind turbulence using an approach based on the theory of Markov processes. It is shown that the Chapman-Kolmogorov equation is approximately satisfied for the turbulent cascade. We evaluate the first two Kramers-Moyal coefficients from experimental data and show that the solution of the resulting Fokker-Planck equation agrees well with experimental probability distributions. Our results suggest the presence of a local transfer mechanism for magnetic field fluctuations in solar wind turbulence.
Enhancement of superconductivity with external phonon squeezing
Creators: name: Grankin, Andrey
name: Hafezi, Mohammad
name: Galitski, Victor M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Squeezing of phonons due to the non-linear coupling to electrons is a way to enhance superconductivity as theoretically studied in a recent work [Kennes et al. Nature Physics 13, 479 (2017)]. We study quadratic electron-phonon interaction in the presence of phonon pumping and an additional external squeezing. Interference between these two driving sources induces a phase-sensitive enhancement of electron-electron attraction, which we find as a generic mechanism to enhance any boson-mediated interactions. The strongest enhancement of superconductivity is shown to be on the boundary with the dynamical lattice instabilities caused by driving. We propose several experimental platforms to realize our scheme.
Bound states in the B-matrix formalism for the three-body scattering
Creators: name: Dawid, Sebastian M.
name: Szczepaniak, Adam P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a model of relativistic three-body scattering with a bound state in the two-body sub-channel. We show that the naïve K-matrix type parametrization, here referred to as the B-matrix, has nonphysical singularities near the physical region. We show how to eliminate such singularities by using dispersion relations and also show how to reproduce unitarity relations by taking into account all relevant open channels.
description: 19 pages, 11 figures
Classical Deception Techniques and Perception Management vs. the Four Strategies of Information Warfare
Creators: name: Kopp, Carlo
Publisher: name: Monash University
Year: 2024

description: C. Kopp, “Classical Deception Techniques and Perception Management vs. the Four Strategies of Information Warfare,” in Proceedings of the 6th Australian Information Warfare & Security Conference 2005 (IWAR 2005), G. Pye and M. Warren, Eds. Geelong, Victoria: School of Information Systems, Deakin University, November 2005, pp. 81–89.AbstractThe use of deception techniques for intelligence operations, strategic and tactical deception in war, politics, business and media manipulation is well established and well documented. This paper analyses established deception techniques in the context of the four canonical strategies of Information Warfare, to establish an information theoretical and game theoretical framework for future modelling and analysis.
Tunable discrete scale invariance in transition-metal pentatelluride flakes
Creators: name: Liu, Yanzhao
name: Wang, Huichao
name: Zhu, Haipeng
name: Li, Yanan
name: Ge, Jun
name: Wang, Junfeng
name: Li, Liang
name: Dai, Ji-Yan
name: Yan, Jiaqiang
name: Mandrus, David
name: Joynt, Robert
name: Wang, Jian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Log-periodic quantum oscillations discovered in transition-metal pentatelluride give a clear demonstration of discrete scale invariance (DSI) in solid-state materials. The peculiar phenomenon is convincingly interpreted as the presence of two-body quasi-bound states in a Coulomb potential. However, the modifications of the Coulomb interactions in many-body systems having a Dirac-like spectrum are not fully understood. Here, we report the observation of tunable log-periodic oscillations and DSI in ZrTe5 and HfTe5 flakes. By reducing the flakes thickness, the characteristic scale factor is tuned to a much smaller value due to the reduction of the vacuum polarization effect. The decreasing of the scale factor demonstrates the many-body effect on the DSI, which has rarely been discussed hitherto. Furthermore, the cut-offs of oscillations are quantitatively explained by considering the Thomas-Fermi screening effect. Our work clarifies the many-body effect on DSI and paves a way to tune the DSI in quantum materials.
description: Accepted by npj Quantum Materials
Chameleon field and the late time acceleration of the universe
Creators: name: Banerjee, Narayan
name: Das, Sudipta
name: Ganguly, Koyel
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the present work, it is shown that a chameleon scalar field having a nonminimal coupling with dark matter can give rise to a smooth transition from a decelerated to an accelerated phase of expansion for the universe. It is surprising to note that the coupling with the chameleon scalar field hardly affects the evolution of the dark matter sector, which still redshifts as $a^{-3}$.
description: 7 pages, 2 figures
Ο ρόλος και η σημαντικότητα της βιτρίνας στη δημιουργία ταυτότητας για το κατάστημα:
Creators: name: Ιωαννίδου, Σταματία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Βιτρίνα καταστήματος
Εμπορικό σήμα
Ταυτότητα καταστήματος
Store windows
Shop windows
Brand name
Identity of the company

description: Στην παρούσα διπλωματική εργασία μελετάται ο πολύπλευρος ρόλος της βιτρίνας στη δημιουργία ταυτότητας του καταστήματος. Αναλύεται επίσης η συμβολή της βιτρίνας στην άσκηση επικοινωνιακής πολιτικής της εταιρείας και στην ενίσχυση του εμπορικού σήματός της. Μελετάται ο τρόπος με τον οποίο οι μάρκετιερς χρησιμοποιούν τους σχεδιαστικούς και ατμοσφαιρικούς παράγοντες της βιτρίνας, όπως τη μουσική, το άρωμα, τα χρώματα τον φωτισμό και την αρχιτεκτονική της βιτρίνας, προκειμένου να εκπέμψουν ερεθίσματα που θα οικοδομούν την επιθυμητή προσωπικότητα για το εμπορικό σήμα τους στην αντίληψη των καταναλωτών.Επιπλέον ερευνάται ο τρόπος με τον οποίο αντιλαμβάνονται οι ίδιοι οι καταναλωτές τα ερεθίσματα που εκπέμπουν οι βιτρίνες μέσω των σχεδιαστικών και ατμοσφαιρικών παραγόντων. Είναι τα ερεθίσματα αυτά ικανά να επηρεάσουν απόψεις και να διαμορφώσουν συγκεκριμένες στάσεις καταναλωτών απέναντι σε ένα κατάστημα; Στην εργασία αυτή, παρουσιάζονται ευρήματα της έρευνας που διεξήχθη και δίνουν απαντήσεις στα παραπάνω ερωτήματα.
description: In this paper, we investigate the important role of the store window for the creation of the store’s identity. More specifically, we investigate the way that the store window can communicate the ideas and the vision of the brand name to the customers and the manner which express the identity of the store. We study the stimuli which come from the atmosphere and design features of a store window, such as the color, the lighting, the architecture, the perfume and the music. We focus to their influence to the expression and the support of the store’s brand name.
Isotope effects in x-ray absorption spectra of liquid water
Creators: name: Zhang, Chunyi
name: Zhang, Linfeng
name: Xu, Jianhang
name: Tang, Fujie
name: Santra, Biswajit
name: Wu, Xifan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The isotope effects in x-ray absorption spectra of liquid water are studied by a many-body approach within electron-hole excitation theory. The molecular structures of both light and heavy water are modeled by path-integral molecular dynamics based on the advanced deep-learning technique. The neural network is trained on ab initio data obtained with SCAN density functional theory. The experimentally observed isotope effect in x-ray absorption spectra is reproduced semiquantitatively in theory. Compared to the spectrum in normal water, the blueshifted and less pronounced pre- and main-edge in heavy water reflect that the heavy water is more structured at short- and intermediate-range of the hydrogen-bond network. In contrast, the isotope effect on the spectrum is negligible at post-edge, which is consistent with the identical long-range ordering in both liquids as observed in the diffraction experiment.
Η εκπαίδευση στο σαντζάκι Σερρών κατά την περίοδο της Τουρκοκρατίας:
Creators: name: Γαλάνη, Ζωή Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Εκπαίδευση
Τουρκοκρατία
Σέρρες
Σχολεία, Εκπαιδευτικοί, Μαθήματα
Εκκλησία και εκπαίδευση
Φιλεκπαιδευτικοί οργανισμοί και αδελφότητες
Education
Turkish occupation
Serres
Schools teachers subjects
Church and education
Education supportive organizations and fraternities

description: Η διάρθρωση του εκπαιδευτικού συστήματος του σαντζακιού Σερρών δεν υπήρξε ενιαία κατά την περίοδο της τουρκοκρατίας αλλά σχετίστηκε με την κοινωνικοοικονομική συγκρότηση της ελληνικής σερραϊκής κοινότητας, στο γενικότερο κλίμα της κάθε περιόδου, το ανταγωνιστικό πλαίσιο με τις άλλες κοινότητες του ίδιου χώρου και τις πρωτοβουλίες ιδιωτών. Η εθνική διάσταση της εκπαίδευσης είναι χαρακτηριστική του κλίματος τηε εποχής. Σημαντικό ρόλο έπαιξαν:η εκκλησία, η κοινοτική πολιτική του κάθε καζά και της ευρύτερης περιοχής του, οι δωρεές ευκατάστατων Σερραίων και ομογενών του εξωτερικού, οι φιλεκπαιδευτικοί οργανισμοί και αδελφότητες αλλά και οι προσφορές φιλελλήνων σε κάποιες περιπτώσεις. Ένας από τους σκοπούς της εργασίας ήταν να δοθούν συνοπτικά τα σχολεία και οι εκπαιδευτικοί που έδρασαν στο σαντζάκι Σερρών κατά την περίοδο της Τουρκοκρατίας καθώς και τα μαθήματα που δίδαξαν.
description: The structure of the educational system of the "santzaki" of Serres, was not united during the Turkish occupation but was related to the socioeconomic set up of the greek community of Serres, the general atmosphere of each period, the competitive context with the other communities of the same area and the individual initiative. The national dimension of education is typical of the spirit of this era. Quite important was the role of church, the community policy of each"kaza" and its wider area, the donations of wealthy citizens of Serres and of compatriots from abroad, the education-supportive organisations and fraternities as well as the philhellenic donations in some cases. One of the main aims of this assignment was to describe in brief the schools and the teachers that palyed a significant role in the "santzaki" of Serres during the Turkish occupation and also the subjects that they taught.
Faint arc-minute extended radio emission around Cygnus X-3
Creators: name: Sanchez-Sutil, J. R.
name: Marti, J.
name: Combi, J. A.
name: Luque-Escamilla, P.
name: Munoz-Arjonilla, A. J.
name: Paredes, J. M.
name: Pooley, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. We revisit the vicinity of the microquasar Cygnus X-3 at radio wavelengths. We aim to improve our previous search for possible associated extended radio features/hot spots in the position angle of the Cygnus X-3 relativistic jets focusing on shorter angular scales than previously explored. Methods. Our work is mostly based on analyzing modern survey and archive radio data, mainly including observations carried out with the Very Large Array and the Ryle Telescopes. We also used deep near-infrared images that we obtained in 2005. Results. We present new radio maps of the Cygnus X-3 field computed after combining multi-configuration Very Large Array archive data at 6 cm and different observing runs at 2 cm with the Ryle Telescope. These are probably among the deepest radio images of Cygnus X-3 reported to date at cm wavelengths. Both interferometers reveal an extended radio feature within a few arc-minutes of the microquasar position, thus making our detection more credible. Moreover, this extended emission is possibly non-thermal, although this point still needs confirmation. Its physical connection with the microquasar is tentatively considered under different physical scenarios. We also report on the serendipitous discovery of a likely Fanaroff-Riley type II radio galaxy only 3 arc-minute away from Cygnus X-3.
description: 7 pages, 5 figures. Accepted for publication by Astronomy & Astrophysics
Hyperpolarisation of external nuclear spins using nitrogen-vacancy centre ensembles
Creators: name: Healey, A. J.
name: Hall, L. T.
name: White, G. A. L.
name: Teraji, T.
name: Sani, M. -A.
name: Separovic, F.
name: Tetienne, J. -P.
name: Hollenberg, L. C. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The nitrogen-vacancy (NV) centre in diamond has emerged as a candidate to non-invasively hyperpolarise nuclear spins in molecular systems to improve the sensitivity of nuclear magnetic resonance (NMR) experiments. Several promising proof of principle experiments have demonstrated small-scale polarisation transfer from single NVs to hydrogen spins outside the diamond. However, the scaling up of these results to the use of a dense NV ensemble, which is a necessary prerequisite for achieving realistic NMR sensitivity enhancement, has not yet been demonstrated. In this work, we present evidence for a polarising interaction between a shallow NV ensemble and external nuclear targets over a micrometre scale, and characterise the challenges in achieving useful polarisation enhancement. In the most favourable example of the interaction with hydrogen in a solid state target, a maximum polarisation transfer rate of $\approx 7500$ spins per second per NV is measured, averaged over an area containing order $10^6$ NVs. Reduced levels of polarisation efficiency are found for liquid state targets, where molecular diffusion limits the transfer. Through analysis via a theoretical model, we find that our results suggest implementation of this technique for NMR sensitivity enhancement is feasible following realistic diamond material improvements.
TextGrids of elicitation
Creators: name: Andi Macahuachi, Delia Luisa
name: Beier, Christine
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: ash

description: 5 TextGrids for WAV audio recordings in associated bundle; includes READ_ME file.

Summary of contents:

ash_20100914_01: Short sentences.

ash_20100914_02: Short sentence elicitation.

ash_20100914_03: Short sentences.

ash_20100914_04: Body parts.

ash_20100914_05: Body parts elicitation: rodilla; one token of 'aʔɨwa'.
Mismatch management for optical and matter-wave quadratic solitons
Creators: name: Driben, R.
name: Oz, Y.
name: Malomed, B. A.
name: Gubeskys, A.
name: Yurovsky, V. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose a way to control solitons in $χ^{(2)}$ (quadratically-nonlinear) systems by means of periodic modulation imposed on the phase-mismatch parameter ("mismatch management", MM). It may be realized in the co-transmission of fundamental-frequency (FF) and second-harmonic (SH) waves in a planar optical waveguide via a long-period modulation of the usual quasi-phase-matching pattern of ferroelectric domains. The MM may also be implemented by dint of the Feshbach resonance in a harmonically-modulated magnetic field in a hybrid atomic-molecular Bose-Einstein condensate (BEC), with the atomic and molecular mean fields (MFs) playing the roles of the FF and SH, respectively. The problem is analyzed by two methods. First, we identify stability regions for spatial solitons in the MM system, in terms of the MM amplitude and period, using the MF equations for spatially-inhomogeneous configurations. In particular, an instability enclave is found inside the stability area.The robustness of the solitons is also tested against variation of the shape of the input pulse, and a threshold for the formation of stable solitons is found in terms of its power. Interactions between solitons are virtually unaffected by the MM. The second method (\textit{parametric approximation}), going beyond the MF description, is developed for spatially-homogeneous states. It demonstrates that the MF description is valid for large modulation periods, while at smaller periods the non-MF component acquires gain, which implies destruction of MF under the action of the high-frequency MM.
description: 11 pages, 6 figures
What percent of the plane can be properly 5- and 6-colored?
Creators: name: Parts, Jaan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We present a tiling of more than 99.985698% of the Euclidean plane with six colors, reducing the previous record for uncovered fraction of the plane by about 12.8%. We also present a tiling of more than 95.99% of the plane with five colors. It is thus shown that any unit-distance graph of order at most 6992 and 24 in the plane can be properly 6-colored and 5-colored, respectively.
Performance of a new cellular channel assignment scheme including handoffs
Creators: name: Wong, Gilbert Shu Wai
Publisher: name: University of British Columbia
Year: 2009

description: As the demand for cellular communication services is increasing rapidly, it is important to achieve an efficient utilization of the allocated radio spectrum. To this end, a channel assignment scheme that is consistent with the objectives of increasing capacity and minimizing interference is required. In this thesis, a dynamic channel assignment (DCA) scheme with channel borrowing and re-assignment is proposed. With the channel borrowing and re-assigning strategy, a cell which has no channel available may borrow a channel from an available channel set of its neighboring cells. The performance of the proposed DCA scheme is studied through computer simulations in terms of blocking probabilities and handoff activities. A comparison of blocking probabilities between the proposed scheme and some existing channel assignment schemes is made. In the no handoff case, the proposed scheme can significantly improve the blocking probability of the cells that have a complete set of interfering cells. In the case with handoff, the adaptability of the channel borrowing and re-assigning strategy leads to a significant improvement in handoff blocking probability for both uniform and non-uniform traffic distributions. The proposed scheme also generally has a lower overall blocking probability.
Canonical and Lie-algebraic twist deformations of Galilei algebra
Creators: name: Daszkiewicz, Marcin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe various nonrelativistic contractions of two classes of twisted Poincare algebra: canonical one ($θ_{μν}$-deformation) and the one leading to Lie-algebraic models of noncommutative space-times. The cases of contraction-independent and contraction-dependent twist parameters are considered. We obtain five models of noncommutative nonrelativistic space-times, in particular, two new Lie-algebraic nonrelativistic deformations of space-time, respectively, with quantum time/classical space and with quantum space/classical time.
description: 14 pages, no figures, v2: the page numbers for all references in preprint version are provided; one reference is added (as in journal version)
New BRITE-Constellation observations of the roAp star Alpha Circini
Creators: name: Weiss, W. W.
name: Fröhlich, H. -E.
name: Kallinger, T.
name: Kuschnig, R.
name: Popowicz, A.
name: Baade, D.
name: Buzasi, D.
name: Handler, G.
name: Kochukhov, O.
name: Koudelka, O.
name: Moffat, A. F. J.
name: Pablo, B.
name: Wade, G.
name: Zwintz, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Chemically peculiar (CP) stars with a measurable magnetic field comprise the group of mCP stars. The pulsating members define the subgroup of rapidly oscillating Ap (roAp) stars, of which Alpha Circini is the brightest member. Hence, Alpha Circini allows the application of challenging techniques, such as interferometry, very high temporal and spectral resolution photometry, and spectroscopy in a wide wavelength range, that have the potential to provide unique information about the structure and evolution of a star. Based on new photometry from BRITE-Constellation, obtained with blue and red filters, and on photometry from WIRE, SMEI, and TESS we attempt to determine the surface spot structure of Alpha Circini and investigate pulsation frequencies. We used photometric surface imaging and frequency analyses and Bayesian techniques in order to quantitatively compare the probability of different models. BRITE-Constellation photometry obtained from 2014 to 2016 is put in the context of space photometry obtained by WIRE, SMEI, and TESS. This provides improvements in the determination of the rotation period and surface features (three spots detected and a fourth one indicated). The main pulsation frequencies indicate two consecutive radial modes and one intermediate dipolar mode. Advantages and problems of the applied Bayesian technique are discussed.
description: 11 pages, 8 figures, 5 tables
Η σύνθεση στη ΝΕ: μια πρώτη προσέγγιση με έρευνα σε φοιτητές της ΝΕ που τη διδάσκονται ως ξένη γλώσσα
Creators: name: Κίτσου, Ιωάννα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Σύνθεση
ΝΕ
Compounding
Modern greek

description: Στην παρούσα εργασία ερωτηματολόγιο
description: Students of Modern Greek as a foreign
Hidden Pseudogap and Excitation Spectra in a Strongly Coupled Two-Band Superfluid/Superconductor
Creators: name: Tajima, Hiroyuki
name: Pieri, Pierbiagio
name: Perali, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate single-particle excitation properties in the normal state of a two-band superconductor or superfluid throughout the Bardeen-Cooper-Schrieffer (BCS) to Bose-Einstein-condensation (BEC) crossover, within the many-body T-matrix approximation for multi-channel pairing fluctuations. We address the single-particle density of states and the spectral functions consisting of two contributions associated with a waekly interacting deep band and a strongly interacting shallow band, relevant for iron-based multiband superconductors and multicomponent fermionic superfluids. We show how the pseudogap state in the shallow band is hidden by the deep band contribution throughout the two-band BCS-BEC crossover. Our results could explain the missing pseudogap in recent scanning tunneling microscopy experiments in FeSe superconductors.
description: 13 pages, 3 figures, submitted to the Special Issue "Fluctuations and Highly Non-linear Phenomena in Superfluids and Superconductors III" of Condensed Matter
Coalition Game Based Full-duplex Popular Content Distribution in mmWave Vehicular Networks
Creators: name: Wang, Yibing
name: Wu, Hao
name: Niu, Yong
name: Han, Zhu
name: Ai, Bo
name: Zhong, Zhangdui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The millimeter wave (mmWave) communication has drawn intensive attention with abundant band resources. In this paper, we consider the popular content distribution (PCD) problem in the mmWave vehicular network. In order to offload the communication burden of base stations (BSs), vehicle-to-vehicle (V2V) communication is introduced into the PCD problem to transmit contents between on-board units (OBUs) and improve the transmission efficiency. We propose a full-duplex (FD) cooperative scheme based on coalition formation game, and the utility function is provided based on the maximization of the number of received contents. The contribution of each member in the coalition can be transferable to its individual profit. While maximizing the number of received contents in the fixed time, the cooperative scheme also ensures the individual profit of each OBU in the coalition. We evaluate the proposed scheme by extensive simulations in mmWave vehicular networks. Compared with other existing schemes, the proposed scheme has superior performances on the number of possessed contents and system fairness. Besides, the low complexity of the proposed algorithm is demonstrated by the switch operation number and CPU time.
description: 12 pages, 8 figures, IEEE Transactions on Vehicular Technology
A remark on the existence of suitable vector fields related to the dynamics of scalar semi-linear parabolic equations
Creators: name: Hang, Fengbo
name: Jiang, Huiqiang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: Primary 35K20; Secondary 35B40, 54F65

description: In 1992, P. Poláčik\cite{P2} showed that one could linearly imbed any vector fields into a scalar semi-linear parabolic equation on $Ω$ with Neumann boundary condition provided that there exists a smooth vector field $Φ=(ϕ_{1},...,ϕ_{n}) $ on $\barΩ$ such that \[ \left\{\begin{array} [c]{l}% \operatorname*{rank}(Φ(x) ,\partial_{1}Φ(x) ,...,\partial_{n}Φ(x)) =n\text{for all}x\in\barΩ, \frac{\partialΦ}{\partialν}=0\text{on}\partialΩ\text{.}% \end{array} \right. \] In this short note, we give a classification of all the domains on which one may find such type of vector fields.
description: 5 pages
Από την ομηρική στη φιλοσοφική αριστεία:
Creators: name: Τσανακτσίδου, Μάρθα Λεωνίδα
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Ομηρική αρετή
Ηθική
Πολιτική
Ηγεσία
Δικαιοσύνη
Φυσικό δίκαιο
Homeric virtue
Ethics
Politics
Justice
Natural right

description: Η ανωτερότητα του ομηρικού ήρωα συνίσταται στο γεγονός της κατανόησης της βραχύτητας της γήινης ζωής, η οποία ωστόσο πρέπει να συνοδεύεται από έναν τιμημένο θάνατο. Ο ήρωας για τον Όμηρο αποτελεί τον υψηλότερο τύπο της ανθρώπινης ύπαρξης, εκείνον που με το θάνατο του υπερέβη τα όρια της απλής ύπαρξης και υψώθηκε σε ανώτερη οντολογική βαθμίδα, η οποία του προσδίδει την αθανασία. Με πλατωνικούς όρους ταυτίζεται με την περιφρόνηση του φιλοσόφου για την κατωτερότητα την υλικής ζωής που σηματοδοτεί τον οντολογικό διαχωρισμό αισθητού-νοητού και κατά επέκταση την ανωτερότητα και την αθανασία της ψυχής, γιατί αυτή οδηγεί το άτομο από το γίγνεσθαι στο καθαυτό ανώτερο ον. Με το τέλος της διερεύνησης αυτής προσδοκούμε την διάνοιξη μιας νέας οδού του σκέπτεσθαι επί του μείζονος θέματος της αριστείας και των αρετών που αυτή εμπεριέχει και σαφώς επικαθορίζει σε ένα ευρύτατο χρονικό φάσμα από την ομηρική διανόηση στη θεμελίωση των φιλοσοφικών συστημάτων του Πλάτωνος και του Αριστοτέλους.
description: The superiority of Homeric hero consists the make of comprehension of sortness of human life, which however should be accompanied from a honoured death. The hero for the Homer constitutes the higher type of human existence, what with his death he exceeded the limits of simple existence and was raised in superior ontological rung, which to him lends immortality. With platonical terms it is identified with the scorn of philosopher for the inferiority of material life that signals the ontological segregation perceptible-conceivable and at extension the superiority and immortality of the soul, because this leads the man from material life in the superior being, in superior truth. With the end of this investigation we expect the opening up of new road of skepsis on more major subject of distinction (aristeia) and virtues that this includes and of course determines in a widest time spectrum from the homerical intellect in the foundation of philosophical systems of Plato and Aristotles.
Thin-shell wormholes associated with global cosmic strings
Creators: name: Bejarano, Cecilia
name: Eiroa, Ernesto F.
name: Simeone, Claudio
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this article we construct cylindrical thin-shell wormholes in the context of global cosmic strings. We study the stability of static configurations under perturbations preserving the symmetry and we find that the throat tends to collapse or expand, depending only on the direction of the velocity perturbation.
description: 7 pages; v2: minor changes. Accepted for publication in Physical Review D
Enhancing magnesium-ion storage in a Bi−Sn anode through dual - phase engineering
Creators: name: Rashad, Muhammad
name: Ngoipala, Apinya
name: Vandichel, Matthias
name: Geaney, Hugh
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences

description: Magnesium-ion batteries (MIBs) are a “beyond Li-ion” technology that are hampered by Mg metal reactivity, which motivates the development of anode materials such as tin (Sn) with high theoretical capacity (903 mAh g−1 ). However, pure Sn is inactive for Mg2+ storage. Herein, Mg alloying with Sn is enabled within dual-phase Bi−Sn anodes, where the optimal composition (Bi66.5Sn33.5) outperformed single-phase Bi and Sn electrodes to deliver high specific capacity (462 mAh g−1 at 100 mA g−1 ), good cycle life (84% after 200 cycles), and significantly improved rate capability (403 mAh g−1 at 1000 mA g−1 ). Density functional theory (DFT) calculations revealed that Mg alloys first with Bi and the subsequent formation of the Mg3Bi2//Sn interfaces is energetically more favorable compared to the individual Mg3Bi2 and Sn phases. Mg insertion into Sn is facilitated when Mg3Bi2 is present. Moreover, dealloying Mg from Mg3Bi2:Mg2Sn systems requires the creation of Mg vacancies and subsequent Mg diffusion. Mg vacancy creation is easier for Mg2Sn compared to Mg3Bi2, while the latter has slightly lower activated Mg-diffusion pathways. The computational findings point toward easier magnesiation/demagnesiation for BiSn alloys over pure Bi or pure Sn, corroborating the superior Mg storage performance of Bi−Sn electrodes over the corresponding single-phase electrodes.
Из опыта ликвидации эпизоотии ящура в Новосибирской области
Creators: name: Юшкова Л.Я.
name: Донченко А.С.
name: Мельцов И.В.
Publisher: name: Эффективное животноводство
Year: 2024
Subjects: ящур
архивные данные
меры борьбы
структура
foot-and-mouth disease
archival data
control measures
structure

description: Цель статьи: вспомнить меры борьбы и факторы передачи из опыта ликвидации эпизоотии ящура в Новосибирской области 1972 г. и сделать выводы из сложившейся ситуации
description: The purpose of the article is to recall the control measures and transmission factors from the experience of eliminating foot-and-mouth disease in the Novosibirsk region in 1972 and draw conclusions from the current situation.
Deep Artifact-Free Residual Network for Single Image Super-Resolution
Creators: name: Nasrollahi, Hamdollah
name: Farajzadeh, Kamran
name: Hosseini, Vahid
name: Zarezadeh, Esmaeil
name: Abdollahzadeh, Milad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recently, convolutional neural networks have shown promising performance for single-image super-resolution. In this paper, we propose Deep Artifact-Free Residual (DAFR) network which uses the merits of both residual learning and usage of ground-truth image as target. Our framework uses a deep model to extract the high-frequency information which is necessary for high-quality image reconstruction. We use a skip-connection to feed the low-resolution image to the network before the image reconstruction. In this way, we are able to use the ground-truth images as target and avoid misleading the network due to artifacts in difference image. In order to extract clean high-frequency information, we train the network in two steps. The first step is a traditional residual learning which uses the difference image as target. Then, the trained parameters of this step are transferred to the main training in the second step. Our experimental results show that the proposed method achieves better quantitative and qualitative image quality compared to the existing methods.
description: 8 pages
Matter instability in modified gravity
Creators: name: Faraoni, Valerio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Dolgov-Kawasaki instability discovered in the matter sector of the modified gravity scenario incorporating a 1/R correction to Einstein gravity is studied in general f(R) theories. A stability condition is found in the metric version of these theories to help ruling out models that are unviable from the theoretical point of view.
description: 4 pages, revtex, to appear in Phys. Rev. D. In the revised version, an error concerning the Palatini version of these theories has been corrected and the references updated
Charged polarons and molecules in a Bose-Einstein Condensate
Creators: name: Christensen, Esben Rohan
name: Camacho-Guardian, Arturo
name: Bruun, Georg M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the properties a mobile ion immersed in a Bose-Einstein condensate (BEC) using different theoretical approaches. A coherent state variational ansatz predicts that the ion spectral function exhibits several branches in addition to polaronic quasiparticle states, and we employ a diagrammatic analysis of the ion-atom scattering in the BEC to identify them as arising from the binding of an increasing number of bosons to the ion. We develop a simplified model describing the formation of these molecular ions showing that their spectral weight scales with the number of bound atoms. The number of atoms in the dressing cloud around the ion are calculated from thermodynamic arguments, and we finally show that the dynamics ensuing the injection of an ion into the BEC exhibits various regimes governed by coherent quasiparticle propagation and decay.
description: Manuscript: 4 pages, 3 figures. Supplemental: 3 pages, 2 figures
Dynamically reversible and strong circular dichroism based on Babinet-invertible chiral metasurfaces
Creators: name: Luo, Xiaoqing
name: Hu, Fangrong
name: Li, Guangyuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We propose a Babinet-invertible chiral metasurface for achieving dynamically reversible and strong circular dichroism (CD). The proposed metasurface is composed of VO$_2$-metal hybrid structure, and when VO$_2$ transits between the dielectric state and the metallic state, the metasurface unit cell switches between complementary structures that are designed according to the Babinet principle. This leads to a large and reversible CD tuning range between $\pm 0.5$ at 0.97~THz, which is larger than the literature. We attribute the CD effect to extrinsic chirality of the proposed metasurface. We envision that the Babinet-invertible chiral metasurface proposed here will advance the engineering of active and tunable chiro-optical devices and promote their applications.
description: 8 pages, 6 figures
Spastin and IST1 depletion impair endosomal tubule fission
Creators: name: Pearson, Guy
name: Allison, Rachel
name: Reid, Evan
Publisher: name: F1000Research
Year: 2015

description: The Role of Spastin in Endosomal Tubule Fission:

Hereditary Spastic Paraplegias (HSP) are a group of diseases that are characterised by a genetically inherited axonopathy of cortical neurones. Of the fifty-nine genes associated with HSP, mutations in SPG4, encoding the protein Spastin, are the most common cause of HSP, accounting for 40% of familial HSP cases.

Spastin exists as two main isoforms; a short M87 isoform and a M1 isoform that possess an additional hydrophobic region allowing it to locate to the endoplasmic reticulum (ER). Both M1 and M87 Spastin possess a Microtubule Binding Domain (MTBD) and an AAA-ATPase domain allowing the severing of microtubules, and a MIT domain that allows their recruitment to endosomes by interaction with ESCRT-III proteins IST1 and CHMP1B. Upon depletion of Spastin or the mutation of these domains, endosomal defects are observed including the elongation of recycling tubules that typically sort cargo away from lysosomal degradation. Intriguingly, this phenotype could be rescued by siRNA-resistant M1 Spastin that localises both at endosomes and at the ER. However the discovery that ER-endosome contacts are required for tubule fission led to the hypothesis that Spastin may be present at these contacts to facilitate endosome fission.

Here, I show by fixed/live-cell microscopy that this is true, with Spastin or IST1 depletion impairing tubule fission, despite ER-endosome contacts still able to form. This suggests that Spastin’s endosomal recruitment by IST1 is required for ER-mediated endosomal tubule fission.
The Gaia spectrophotometric standard stars survey -- IV. Results of the absolute photometry campaign
Creators: name: Altavilla, G.
name: Marinoni, S.
name: Pancino, E.
name: Galleti, S.
name: Bellazzini, M.
name: Sanna, N.
name: Rainer, M.
name: Tessicini, G.
name: Carrasco, J. M.
name: Bragaglia, A.
name: Schuster, W. J.
name: Cocozza, G.
name: Gebran, M.
name: Voss, H.
name: Federici, L.
name: Masana, E.
name: Jordi, C.
name: Monguió, M.
name: Castro, A.
name: Peña-Guerrero, M. A.
name: Pérez-Villegas, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Johnson-Kron-Cousins BVRI photometry of 228 candidate spectrophotometric standard stars for the external (absolute) flux calibration of Gaia data. The data were gathered as part of a ten-year observing campaign with the goal of building the external grid of flux standards for Gaia and we obtained absolute photometry, relative photometry for constancy monitoring, and spectrophotometry. Preliminary releases of the flux tables were used to calibrate the first two Gaia releases. This paper focuses on the imaging frames observed in good sky conditions (about 9100). The photometry will be used to validate the ground-based flux tables of the Gaia spectrophotometric standard stars and to correct the spectra obtained in non-perfectly photometric observing conditions for small zeropoint variations. The absolute photometry presented here is tied to the Landolt standard stars system to $\simeq$1 per cent or better, depending on the photometric band. Extensive comparisons with various literature sources show an overall $\simeq$1 per cent agreement, which appears to be the current limit in the accuracy of flux calibrations across various samples and techniques in the literature. The Gaia photometric precision is presently of the order of 0.1 per cent or better, thus various ideas for the improvement of photometric calibration accuracy are discussed.
description: 15 pages, 10 figures. This is a pre-copyedited, author-produced PDF of an article accepted for publication in MNRAS following peer review. Corrected bibliographic details
Stochastic processes and their spectral representations over non-archimedean fields
Creators: name: Ludkovsky, S. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 60G57, 60H25, 26E30

description: The article is devoted to stochastic processes with values in finite- and infinite-dimensional vector spaces over infinite fields $\bf K$ of zero characteristics with non-trivial non-archimedean norms. For different types of stochastic processes controlled by measures with values in $\bf K$ and in complete topological vector spaces over $\bf K$ stochastic integrals are investigated. Vector valued measures and integrals in spaces over $\bf K$ are studied. Theorems about spectral decompositions of non-archimedean stochastic processes are proved.
TextGrids of elicitation
Creators: name: Andi Macahuachi, Delia Luisa
name: Beier, Christine
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: ash

description: 20 TextGrids for WAV audio recordings in associated bundle; includes READ_ME file.

Summary of content:

ash_20100913_01: Intro by Delia Luisa Andi Macahuachi in SP and QV only.

ash_20100913_02: Elicitation from historical materials.

ash_20100913_03: Elicitation from historical materials.

ash_20100913_04: Elicitation from historical materials and LDM notes.

ash_20100913_05: Discourse about QV and various people.

ash_20100913_06: Elicitation from historical materials and LDM notes.

ash_20100913_07: Bird names.

ash_20100913_08: Conversation about Iquitos and other places and people (SP only).

ash_20100913_09: Mostly conversation in SP; eat.

ash_20100913_10: Clothing, a few short sentences.

ash_20100913_11: Tree; animal names.

ash_20100913_12: Animal names, plant names.

ash_20100913_13: Bird names.

ash_20100913_14: Almost all QV, ‘aewa’.

ash_20100913_15: Bird names.

ash_20100913_16: A few short sentences, household objects.

ash_20100913_17: Fish names, animal names.

ash_20100913_18: Natural world terms, a few short sentences.

ash_20100913_19: A few body parts and phrases.

ash_20100913_20: Kin terms, people terms, a few short sentences.
Invariant varieties of periodic points for some higher dimensional integrable maps
Creators: name: Saito, Satoru
name: Saitoh, Noriko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 14J81; 39A11; 70E40

description: By studying various rational integrable maps on $\mathbf{\hat C}^d$ with $p$ invariants, we show that periodic points form an invariant variety of dimension $\ge p$ for each period, in contrast to the case of nonintegrable maps in which they are isolated. We prove the theorem: {\it `If there is an invariant variety of periodic points of some period, there is no set of isolated periodic points of other period in the map.'}
description: 24 pages