cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Magneto-electric Tuning of Pinning-Type Permanent Magnets through Atomic-Scale Engineering of Grain Boundaries
Creators: name: Ye, Xinglong
name: Yan, Fengkai
name: Schaefer, Lukas
name: Wang, Di
name: Geßwein, Holger
name: Wang, Wu
name: Chellali, Mohammed Reda
name: Stephenson, Leigh T.
name: Skokov, Konstantin
name: Gutfleisch, Oliver
name: Raabe, Dierk
name: Hahn, Horst
name: Gault, Baptiste
name: Kruk, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Pinning-type magnets maintaining high coercivity, i.e. the ability to sustain magnetization, at high temperature are at the core of thriving clean-energy technologies. Among these, Sm2Co17-based magnets are excellent candidates owing to their high-temperature stability. However, despite decades of efforts to optimize the intragranular microstructure, the coercivity currently only reaches 20~30% of the theoretical limits. Here, the roles of the grain-interior nanostructure and the grain boundaries in controlling coercivity are disentangled by an emerging magneto-electric approach. Through hydrogen charging/discharging by applying voltages of only ~ 1 V, the coercivity is reversibly tuned by an unprecedented value of ~ 1.3 T. In situ magneto-structural measurements and atomic-scale tracking of hydrogen atoms reveal that the segregation of hydrogen atoms at the grain boundaries, rather than the change of the crystal structure, dominates the reversible and substantial change of coercivity. Hydrogen lowers the local magnetocrystalline anisotropy and facilitates the magnetization reversal starting from the grain boundaries. Our study reveals the previously neglected critical role of grain boundaries in the conventional magnetisation-switching paradigm, suggesting a critical reconsideration of strategies to overcome the coercivity limits in permanent magnets, via for instance atomic-scale grain boundary engineering.
Η συμβολή της διαδικασίας του σχεδιασμού στην παραγωγή γραπτών κειμένων: Μία μελέτη περίπτωσης σε μαθητές Δ’ Δημοτικού
Creators: name: Καραμπατάκη, Μαρία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Σχεδιασμός
Παραγωγή γραπτού λόγου
Κειμενοκεντρικό μοντέλο
Planning
Text production
Text-based model

description: Σκοπό της παρούσας εργασίας αποτελεί η διερεύνηση της συμβολής της διαδικασίας του σχεδιασμού στην παραγωγή γραπτών κειμένων. Για τον σκοπό αυτό σχεδιάστηκε και εφαρμόστηκε μια διδακτική παρέμβαση για τη διδασκαλία του σχεδιασμού μιας ιστορίας σε μαθητές Δ’ Δημοτικού, όπως αυτή ορίζεται από τη γραμματική των ιστοριών, μετά από τις μέτριες επιδόσεις των μαθητών στην παραγωγή αντίστοιχου κειμένου. Η διδακτική παρέμβαση στηρίχτηκε στο κειμενοκεντρικό μοντέλο και περιλαμβάνει την ανάγνωση και επεξεργασία αυθεντικών ιστοριών και τον σχεδιασμό καθώς και την καταγραφή ιστοριών με ομαδοσυνεργατική μέθοδο. Η σύγκριση των ιστοριών που έγραψαν οι μαθητές πριν και μετά τη διδακτική παρέμβαση έδειξε ότι οι μαθητές αφενός σχεδίασαν τις ιστορίες πριν προχωρήσουν στην καταγραφή τους και αφετέρου παρήγαγαν πολύ καλύτερα ποιοτικά κείμενα σε επίπεδο περιεχομένου, δομής και λεξιλογίου, γεγονός που μπορεί να λάβει ποικίλες εκπαιδευτικές προεκτάσεις
description: The main objective of this dissertation is to examine the contribution of planning in writing. For this purpose a teaching intervention was designed and applied on 4th grade students. The intervention intended to teach students, who had previously performed not so well on writing, how to plan a story as it is defined by story grammar. The intervention was based on the text-based model and includes reading and processing original stories as well as planning and writing stories through collaboration. The comparison of stories written before and after the intervention showed that the students chose to plan their stories before putting them on paper. Furthermore they produced much better texts in terms of content, structure and vocabulary, which can lead to various educational conclusions
Control Barrier Functions in Sampled-Data Systems
Creators: name: Breeden, Joseph
name: Garg, Kunal
name: Panagou, Dimitra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents conditions for ensuring forward invariance of safe sets under sampled-data system dynamics with piecewise-constant controllers and fixed time-steps. First, we introduce two different metrics to compare the conservativeness of sufficient conditions on forward invariance under piecewise-constant controllers. Then, we propose three approaches for guaranteeing forward invariance, two motivated by continuous-time barrier functions, and one motivated by discrete-time barrier functions. All proposed conditions are control affine, and thus can be incorporated into quadratic programs for control synthesis. We show that the proposed conditions are less conservative than those in earlier studies, and show via simulation how this enables the use of barrier functions that are impossible to implement with the desired time-step using existing methods.
description: Published in IEEE Control Systems Letters, 6 pages. See prior version for additional theorem not included in final version
On the implementation of a deterministic secure coding protocol using polarization entangled photons
Creators: name: Ostermeyer, Martin
name: Walenta, Nino
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate a prototype-implementation of deterministic information encoding for quantum key distribution (QKD) following the ping-pong coding protocol [K. Bostroem, T. Felbinger, Phys. Rev. Lett. 89 (2002) 187902-1]. Due to the deterministic nature of this protocol the need for post-processing the key is distinctly reduced compared to non-deterministic protocols. In the course of our implementation we analyze the practicability of the protocol and discuss some security aspects of information transfer in such a deterministic scheme.
description: 12 pages, 2 figures
Additional file 1 of Implementing a new multidisciplinary, remote, dementia staff training program for Veterans affairs nursing homes
Creators: name: Shirsat, Nikita R.
name: Lee, Jennifer Ann
name: Pham, Catherine
name: Miller, Matthew J.
name: Chesney, Margaret A.
name: Nicosia, Francesca M.
name: Chao, Linda
name: Barnes, Deborah E.
Publisher: name: figshare
Year: 2024
Subjects: Medicine
Biological Sciences not elsewhere classified
Cancer
Science Policy

description: Supplementary Material 1
XMM-Newton and Chandra Observations of Abell 2626: Interacting Radio Jets and Cooling Core with Jet Precession?
Creators: name: Wong, Ka-Wah
name: Sarazin, Craig L.
name: Blanton, Elizabeth L.
name: Reiprich, Thomas H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed analysis of the XMM-Newton and Chandra observations of Abell 2626 focused on the X-ray and radio interactions. Within the region of the radio mini-halo (~70 kpc), there are substructures which are probably produced by the central radio source and the cooling core. We find that there is no obvious correlation between the radio bars and the X-ray image. The morphology of Abell 2626 is more complex than that of the standard X-ray radio bubbles seen in other cool core clusters. Thus, Abell 2626 provides a challenge to models for the cooling flow -- radio source interaction. We identified two soft X-ray (0.3--2 keV) peaks with the two central cD nuclei; one of them has an associated hard X-ray (2--10 keV) point source. We suggest that the two symmetric radio bars can be explained by two precessing jets ejected from an AGN. Beyond the central regions, we find two extended X-ray sources to the southwest and northeast of the cluster center which are apparently associated with merging subclusters. The main Abell 2626 cluster and these two subclusters are extended along the direction of the Perseus-Pegasus supercluster, and we suggest that Abell 2626 is preferentially accreting subclusters and groups from this large-scale structure filament. We also find an extended X-ray source associated with the cluster S0 galaxy IC 5337; the morphology of this source suggests that it is infalling from the west, and is not associated with the southwest subcluster, as had been previously suggested.
description: 26 pages, 16 figures, Accepted for publication in the Astrophysical Journal, We highly recommend to download a highly resolution version of the paper, which is available at http://www.astro.virginia.edu/~kw6k/publication/a2626/a2626.pdf.gz
Evidence of damage in carbon fibre composite tiles joined to a metallic heat sink under high heat flux fatigue
Creators: name: Mitteau, R
name: Chappuis, P
name: Moncel, L
name: Schlosser, J
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The two years experience with Active Metal Casting flat bonds shows that this technology is suitable for the heat fluxes expected in Tore Supra (10 MW/m${}^2$). Tests were pursued up to 3330 cycles, with elements still functional. At higher heat fluxes, fatigue damage is observed, but the bond resists remarkably well with no tile detachment. Examination of such deliberately damaged bonds showed distributed cracking, proving the absence of any weak link. The limitations to those higher heat fluxes are more related to the design and the base materials than to the bond itself.
Dual superconductivity and vacuum properties in Yang--Mills theories
Creators: name: D'Alessandro, A.
name: D'Elia, M.
name: Tagliacozzo, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We address, within the dual superconductivity model for color confinement, the question whether the Yang-Mills vacuum behaves as a superconductor of type I or type II. In order to do that we compare, for the theory with gauge group SU(2), the determination of the field penetration depth $λ$ with that of the superconductor correlation length $ξ$. The latter is obtained by measuring the temporal correlator of a disorder parameter developed by the Pisa group to detect dual superconductivity. The comparison places the vacuum close to the border between type I and type II and marginally on the type II side. We also check our results against the study of directly measurable effects such as the interaction between two parallel flux tubes, obtaining consistent indications for a weak repulsive behaviour. Future strategies to improve our investigation are discussed.
description: 23 pages, 15 figures. Simulations on finer lattices and with different monopole charges added. Final version to be published in Nuclear Physics B
Search for High-Energy Neutrino Emission from Radio-Bright AGN
Creators: name: Zhou, Bei
name: Kamionkowski, Marc
name: Liang, Yun-feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the possibility that radio-bright active galactic nuclei (AGN) are responsible for the TeV--PeV neutrinos detected by IceCube. We use an unbinned maximum-likelihood-ratio method, 10 years of IceCube muon-track data, and 3388 radio-bright AGN selected from the Radio Fundamental Catalog. None of the AGN in the catalog have a large global significance. The two most significant sources have global significance of $\simeq$ 1.5$σ$ and 0.8$σ$, though 4.1$σ$ and 3.8$σ$ local significance. Our stacking analyses show no significant correlation between the whole catalog and IceCube neutrinos. We infer from the null search that this catalog can account for at most 30\% (95\% CL) of the diffuse astrophysical neutrino flux measured by IceCube. Moreover, our results disagree with recent work that claimed a 4.1$σ$ detection of neutrinos from the sources in this catalog, and we discuss the reasons of the difference.
description: Minor changes; results and conclusions unchanged; matches published version
SDSS AGNs with X-ray Emission from ROSAT PSPC Pointed Observations
Creators: name: Suchkov, A. A.
name: Hanisch, R. J.
name: Voges, W.
name: Heckman, T. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a sample of 1744 type 1 active galactic nuclei (AGNs) from the Sloan Digital Sky Survey (SDSS DR4) spectroscopic catalog with X-ray counterparts in the White-Giommi-Angelini Catalog (WGACAT) of ROSAT PSPC pointed observations. Of 1744 X-ray sources, 1410 (80.9%) are new AGN identifications. Of 4574 SDSS DR4 AGNs for which we found radio matches in the catalog of radio sources from the FIRST catalog, 224 turned up in our sample of SDSS X-ray AGNs. The sample objects are given in a catalog that contains optical and X-ray parameters along with radio emission parameters where available. We illustrate the content of our catalog and its potential for AGN science by providing statistical relationships for the catalog data. The potential of the morphological information is emphasized by confronting the statistics of optically resolved and unresolved AGNs. The immediate properties of the catalog objects include significant correlation of X-ray and optical fluxes, which is consistent with expectations. Also expected is the decrease of X-ray flux toward higher redshifts. The X-ray to optical flux ratio for the unresolved AGNs exhibits a decline toward higher redshifts, in agreement with previous results. The resolved AGNs, however, display the opposite trend. At a given optical brightness, X-ray fluxes of radio-quiet AGNs by a factor of 2. We caution, however, that because of the variety of selection effects present in both the WGACAT and the SDSS, the interpretation of any relationships based on our sample of X-ray AGNs requires a careful analysis of these effects.
description: 34 pages, 18 figures
Πρακτικές γραμματισμού και ταυτότητες στο νηπιαγωγείο
Creators: name: Νέου, Αικατερίνη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: σχολικός γραμματισμός
κριτικός γραμματισμός
προσχολική εκπαίδευση
school literacy
critical literacy
preschool education

description: Στα τελευταία Προγράμματα Σπουδών για το Νηπιαγωγείο έχει ενσωματωθεί ο Κριτικός Γραμματισμός στην καλλιέργεια της γλώσσας. Ωστόσο, οι πρακτικές που ακολουθούνται τείνουν να είναι πιο παραδοσιακές. Η παρούσα εθνογραφική έρευνα επιχείρησε να διερευνήσει τις αντιλήψεις μαθητών/-τριών ενός Νηπιαγωγείου αναφορικά με ζητήματα φυλετικού και έμφυλου ρατσισμού καθώς και τις επιδράσεις της υλοποίησης ενός προγράμματος Κριτικού Γραμματισμού πάνω στις δύο αυτές θεματικές. Απώτερος στόχος ήταν να διαπιστωθεί η δυνατότητα εφαρμογής του Κριτικού Γραμματισμού στη συγκεκριμένη βαθμίδα και κατ’ επέκταση τα αποτελέσματα αυτής. Τα εργαλεία που αξιοποιήθηκαν ήταν το ερωτηματολόγιο, η επιτόπια παρατήρηση και η ημιδομημένη συνέντευξη. Παρόλο που η διαδικασία αυτή ήταν πρόκληση και για την εκπαιδευτικό, τα αποτελέσματα από την ποιοτική ανάλυση των δεδομένων, που προέκυψαν από τα τρία εργαλεία που αναφέρθηκαν, καθώς και από τα κείμενα που παρήγαγαν οι μαθητές/-τριες είναι ενθαρρυντικά για την ενσωμάτωση των αρχών του Κριτικού Γραμματισμού, περιλαμβανομένων και στοιχείων του Οπτικού Γραμματισμού, στο Νηπιαγωγείο κατά το γλωσσικό μάθημα. Οι μαθητές/-τριες, αν και σε ορισμένες περιπτώσεις είχαν στερεοτυπικές αντιλήψεις για τα θέματα υπό διαπραγμάτευση, σταδιακά άρχισαν να βλέπουν πιο κριτικά τα διάφορα κείμενα, κάτι που αναδεικνύει την ανάγκη να εμπλουτιστεί η κατανόηση των νηπιαγωγών για έννοιες όπως είναι ο κριτικός γραμματισμός και η συμβολή του στην διαπραγμάτευση κειμένων
description: While the Curricula for Preschool Education explicitly mention the need to incorporate critical literacy practices concerning the teaching of language, this premise doesn’t easily transfer in the everyday activities of preschool institutions, which tend to stick to traditional language teaching methods. This study outlines the perceptions that preschool institution Greek children have about racism and gender matters and the impact of a critical literacy program in reshaping their approach to those topics. In order to investigate the aforementioned issues, three tools were used: questionnaires, field-based observation and a semi-structured interview. Even though this process was a challenge for the teacher and the students as well, the qualitative analysis of the collected data shows that the integration of critical literacy, which also includes elements of visual literacy in preschool education are possible. Despite the fact that the students had stereotypic perceptions on some of the discussed matters, they started approaching texts from a new, more critical angle- a finding that suggests the need for enriching kindergarten teachers’ understanding of notions of critical literacy and the way this shapes the negotiation of texts
Space-contained conflict revision, for geographic information
Creators: name: Doukari, Omar
name: Jeansoulin, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Using qualitative reasoning with geographic information, contrarily, for instance, with robotics, looks not only fastidious (i.e.: encoding knowledge Propositional Logics PL), but appears to be computational complex, and not tractable at all, most of the time. However, knowledge fusion or revision, is a common operation performed when users merge several different data sets in a unique decision making process, without much support. Introducing logics would be a great improvement, and we propose in this paper, means for deciding -a priori- if one application can benefit from a complete revision, under only the assumption of a conjecture that we name the "containment conjecture", which limits the size of the minimal conflicts to revise. We demonstrate that this conjecture brings us the interesting computational property of performing a not-provable but global, revision, made of many local revisions, at a tractable size. We illustrate this approach on an application.
description: 14 pages
Comment on "Heavy element production in inhomogeneous big bang nucleosynthesis"
Creators: name: Rauscher, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The work of Matsuura et al. [Phys. Rev. D 72, 123505 (2005); astro-ph/0507439] claims that heavy nuclei could have been produced in a combined p- and r-process in very high baryon density regions of an inhomogeneous big bang. However, they do not account for observational constraints and previous studies which show that such high baryon density regions did not significantly contribute to big bang abundances.
description: 2 pages, submitted to Phys. Rev. D on Feb 23, 2006
Bloch oscillations in the spin-1/2 XXZ chain
Creators: name: Liu, Yankang
name: Fuji, Yohei
name: Watanabe, Haruki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Under a perfect periodic potential, the electric current density induced by a constant electric field may exhibit nontrivial oscillations, so-called Bloch oscillations, with an amplitude that remains nonzero in the large system size limit. Such oscillations have been well studied for nearly noninteracting particles and observed in experiments. In this work, we revisit Bloch oscillations in strongly interacting systems. By analyzing the spin-1/2 XXZ chain, which can be mapped to a model of spinless electrons, we demonstrate that the current density at special values of the anisotropy parameter $Δ=-\cos(π/p)$ ($p=3,4,5,\cdots$) in the ferromagnetic gapless regime behaves qualitatively the same as in the noninteracting case ($Δ=0$) even in the weak electric field limit. When $Δ$ deviates from these values, the amplitude of the oscillation under a weak electric field is suppressed by a factor of the system size. We estimate the strength of the electric field required to observe such a behavior using the Landau--Zener formula.
description: 8 pages, 7 figures
Large Microwave Inductance of Granular Boron-Doped Diamond Superconducting Films
Creators: name: Oripov, Bakhrom
name: Kumar, Dinesh
name: Garcia, Cougar
name: Hemmer, Patrick
name: Venkatesan, Thirumalai
name: Rao, M. S. Ramachandra
name: Anlage, Steven M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Boron-doped diamond granular thin films are known to exhibit superconductivity with an optimal critical temperature of Tc = 7.2K. Here we report the measured complex surface impedance of Boron-doped diamond films in the microwave frequency range using a resonant technique. Experimentally measured inductance values are in good agreement with estimates obtained from the normal state sheet resistance of the material. The magnetic penetration depth temperature dependence is consistent with that of a fully-gapped s-wave superconductor. Boron-doped diamond films should find application where high kinetic inductance is needed, such as microwave kinetic inductance detectors and quantum impedance devices.
On Bass' question for finitely generated algebras over large fields
Creators: name: Gubeladze, Joseph
Publisher: name: arXiv
Year: 2008
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 19D35; 14C35

description: Recently Cortinas-Haesemayer-Walker-Weibel gave affirmative answer to Bass' 1972 question on NK-groups for algebras of essentially finite type over large fields of characteristic 0. Here we give an alternative short proof of this result for algebras of finite type over such fields. Our approach is based on classical techniques in higher K-theory of rings and a direct K_i-analogue of an old observation of Murthy-Pedrini, dating back from the same 1972.
description: Bull. London Math. Soc., to appear
Οι Σέρρες κατά τον 14ο αιώνα. Βυζαντινοσερβικές σχέσεις
Creators: name: Κιουμουρτζίδου, Σοφία Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Σέρρες
Βυζάντιο
Σέρβοι
Serres
Byzantium
Serbs

description: Στη βυζαντινή περίοδο οι Σέρρες αποτελούν μία εκ των σημαντικότερων πόλεων του μακεδονικού χώρου. Η γεωγραφική της θέση την καθιστά πόλο έλξης για τους Βαλκάνιους γείτονες, τόσο τους Βούλγαρους, όσο και τους Σέρβους. Η παρούσα μελέτη επικεντρώνεται σε μια συγκεκριμένη περίοδο της ιστορίας της πόλεως, τον 14ο αιώνα, οπότε και η πόλη κατακτάται από τους Σέρβους υπό την εξουσία του Στέφανου Δουσάν (1345-1355), της γνωστής δυναστείας των Νεμάνια. Υπό την σερβική εξουσία, οι Σέρρες αποτέλεσαν ένα από τα σπουδαιότερα κέντρα του μεγάλου κράτους του Σέρβου ηγεμόνα. Μετά τον θάνατό του Δουσάν, η πόλη μετετράπη σε κέντρο εξουσίας της χήρας του Ελένης και μετά το θάνατο αυτής, το 1365, του Σέρβου Δεσπότη Ιωάννη Ούγκλεση (1365-1371). Ειδικότερα η μελέτη μας εξετάζει, με βάση την μαρτυρία των πηγών, βυζαντινών και σέρβικων, την διοικητική, οικονομική, κοινωνική και εκκλησιαστική κατάσταση της πόλης (θεσμοί και πρόσωπα) πριν και μετά την έλευση των Σέρβων. Σημειώνονται οι εξελίξεις και οι αλλαγές (όπου υπήρξαν) που επέφερε το νέο καθεστώς σε όλους τους παραπάνω τομείς έως και το 1371, οπότε και η πόλη επανέρχεται υπό την βυζαντινή εξουσία
description: In the Byzantine period, Serres is one of the most important cities in the Macedonian area. Its geographical location makes it a pole of attraction for the Balkan neighbors, both Bulgarians and Serbs. This study focuses on a specific period of the city's history, in the 14th century, when the city was conquered by the Serbs under the rule of Stefanos Dusan (1345-1355), the well-known Nemania dynasty. Under Serbian rule, Serres was one of the most important centers of the great state of the Serbian ruler. After Dusan's death, the city became the center of power of Dusan's widow, Helen and after her death, in 1365, the Serb despot John Unglesis (1365-1371). In particular, our study examines the administrative, economic, social and ecclesiastical situation of the city before and after the arrival of the Serbs, based on the testimony of the Byzantine and Serbian sources. The developments and changes brought the new regime (where they existed) to all the above areas since 1371, when the city came back to Byzantine power
Long-time diffusion and energy transfer in polydisperse mixtures of particles with different temperatures
Creators: name: Ilker, Efe
name: Castellana, Michele
name: Joanny, Jean-François
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Evidence suggests that the transport rate of a passive particle at long timescales is enhanced due to interactions with the surrounding active ones in a size- and composition-dependent manner. Using a system of particles with different temperatures, we probe these effects in dilute solutions and derive long-time friction and self-diffusion coefficients as functions of volume fractions, sizes and temperatures of particles in $d=2$ and 3 dimensions. Thus, we model excluded-volume interactions for nonequilibrium systems but also extend the scope to short-range soft potentials and compare our results to Brownian-dynamics simulations. Remarkably, we show that both viscosity and energy flux display a nonlinear dependence on size. The simplicity of our formalism allows to discover various interesting scenarios that can be relevant for biological systems and active colloids.
description: Published version, main text and supplemental material
Additional file 2 of Spatio-temporal distribution and international context of bovine viral diarrhoea virus genetic diversity in France
Creators: name: Lescoat, Claire
name: Perrotte, Delphine
name: Barry, Séverine
name: Oden, Élise
name: Herbet, Valentin
name: Beaunée, Gaël
name: Tabouret, Marc
name: Benoit, Fabienne
name: Pitel, Pierre-Hugues
name: Duquesne, Véronique
name: Bailly, Xavier
name: Thézé, Julien
name: Kouokam, Guy
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology
subject: Virology

description: Additional file 2. RNA extraction and BVDV 5’UTR sequencing details using Sanger protocol for datasets 1, 2 and 3.
Colorimetric sensor arrays: development and application to art conservation
Creators: name: LaGasse, Maria K.
name: McCormick, Kristen
name: Li, Zheng
name: Khanjian, Herant
name: Schilling, Michael
name: Suslick, Kenneth S.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Neuroscience
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy

description: Acceptable air pollutant concentration limits for sensitive artwork are generally at or below a few ppb: this is only ∼1% of the permissible exposure limits for humans. Monitoring pollutants at such low levels is an exceptional challenge, especially to do so in a cost-effective fashion for a large number of locations and microenvironments (e.g., every display case in a museum). To meet this challenge, we have extended our portable “optoelectronic nose,” by using new sensor array chemistry to develop cumulative colorimetric sensor arrays with dosimetric sensitivities that are dramatically better than commercial sensor tubes. The color changes of each sensor in a disposable printed array produce a composite response to volatiles. Using cell phone camera imaging, we have made field trials to monitor pollutant exposure of artwork from the Walt Disney Animation Research Library during shipping to and exhibition in Beijing. This exhibition, “Drawn from Life: the Art of Disney Animation Studios,” featured animation drawings, story sketches, layouts, and concept art spanning the 90 years of the Disney Animation Studio’s history. Sensor arrays monitored exterior and interior environments of passe-partout artwork frames during exhibition and inside shipping crates during transport providing quantitative information on oxidant, aldehyde, and sulfide pollutant exposure.
Solitons in strongly driven discrete nonlinear Schrödinger-type models
Creators: name: Garnier, Josselin
name: Abdullaev, Fatkhulla
name: Salerno, Mario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Discrete solitons in the Ablowitz-Ladik (AL) and discrete nonlinear Schrödinger (DNLS) equations with damping and strong rapid drive are investigated. The averaged equations have the forms of the parametric AL and DNLS equations. A new type of parametric bright discrete soliton and cnoidal waves are found and the stability properties are analyzed. The analytical predictions of the perturbed inverse scattering transform are confirmed by the numerical simulations of the AL and DNLS equations with rapidly varying drive and damping.
description: 20 pages, 12 figures
Perspectives in Statistical Mechanics
Creators: name: Aizenman, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82-02

description: Without attempting to summarize the vast field of statistical mechanics, we briefly mention some of the progress that was made in areas which have enjoyed Barry Simon's interests. In particular, we focus on rigorous non-perturbative results which provide insight on the spread of correlations in Gibbs equilibrium states and yield information on phase transitions and critical phenomena. Briefly mentioned also are certain spinoffs, where ideas which have been fruitful within the context of statistical mechanics proved to be of use in other areas, and some recent results which relate to previously open questions and conjectures.
description: Dedicated to Barry Simon on the occasion of his sixtieth birthday
Anisotropic Confinement of Chromophores Induces Second-Order Nonlinear Optics in a Nanoporous Photonic Metamaterial
Creators: name: Waszkowska, Karolina
name: Josse, Pierre
name: Cabanetos, Clement
name: Blanchard, Philippe
name: Sahraoui, Bouchta
name: Guichaoua, Dominique
name: Syvorotka, Igor
name: Kityk, Olha
name: Wielgosz, Robert
name: Huber, Patrick
name: Kityk, Andriy V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Second-order nonlinear optics is the base for a large variety of devices aimed at the active manipulation of light. However, physical principles restrict its occurrence to non-centrosymmetric, anisotropic matter. This significantly limits the number of base materials exhibiting nonlinear optics. Here, we show that embedding chromophores in an array of conical channels 13 nm across in monolithic silica results in mesoscopic anisotropic matter and thus in a hybrid material showing second-harmonic generation (SHG). This non-linear optics is compared to the one achieved in corona-poled polymer films containing the identical chromophores. It originates in confinement-induced orientational order of the elongated guest molecules in the nanochannels. This leads to a non-centrosymmetric dipolar order and hence to a non-linear light-matter interaction on the sub-wavelength, single-pore scale. Our study demonstrates that the advent of large-scale, self-organised nanoporosity in monolithic solids along with confinement-controllable orientational order of chromophores at the single-pore scale provides a reliable and accessible tool to design materials with a nonlinear meta-optics.
description: 4 pages, 5 figures
Physiological, ultrastructural and growth studies of Prymnesiophyceae coccolithophorid species subjected to continuous light and D:N cycle regimes, and various phosphate concentrations
Creators: name: Price, Laurel Lynne
Publisher: name: University of British Columbia
Year: 2008

description: Thirteen species of marine phytoplankton belonging to the taxonomic division Prymnesiophyceae, eleven of which were coccolithophorids, were tested for their growth, physiological, and morphological responses to continuous light and D:N cycle regimes as well as three phosphate concentrations. The Prymnesiophyceae, Isochrysis qalbana and Chrysochromulina sp. and the non-coccolith forming strain of Coccolithus pelagicus were unable to grow under continuous light. The remaining species showed a trend for lower growth rates under continuous light compared to the D:N cycle. These results suggest that for some species, diel periodicity may be beneficial. The non-coccolith forming coccolithophorids were found to be more sensitive to continuous light than the coccolith-forming strains. No significant differences in pigments, POC, PON, or C:N ratios were observed for species grown under the two light regimes. The coccolith-forming coccolithophorids contained 3-5 times more chl a and chl c than the non-coccolith forming coccolithophorids. These results suggest that the coccosphere reflects light and shades the cell. The cell compensates by producing more chl a. No differences in cell and coccolith dimensions or morphology were observed under either light regime. Four of the five coccolithophorids examined showed no significant differences in growth rates when they were grown under three different phosphate concentrations (13.0, 10.0, and 3.0 or 0.9 µM). The maximum yields were significantly lower at 3.0 and 0.9 µM compared to 13.0 and 10.0 uM phosphate concentrations for all of the coccolithophorids. Phosphate concentration did not affect coccolith formation or morphology. Efforts to induce coccolith formation in noncoccolith forming strains of E. huxleyi under phosphate and nitrate limitation were unsuccessful. Morphological changes were observed in Coccolithus neohelis under the three phosphate concentrations. At 3.0 µM phosphate, 90-100% of cells had flagella and 10-60% had one or more coccoliths, whereas at 13.0 µM phosphate 0-10% of cells had flagella and 100% had coccoliths.
Chaotic scattering of highly excited strings
Creators: name: Gross, David J.
name: Rosenhaus, Vladimir
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Motivated by the desire to understand chaos in the $S$-matrix of string theory, we study tree level scattering amplitudes involving highly excited strings. While the amplitudes for scattering of light strings have been a hallmark of string theory since its early days, scattering of excited strings has been far less studied. Recent results on black hole chaos, combined with the correspondence principle between black holes and strings, suggest that the amplitudes have a rich structure. We review the procedure by which an excited string is formed by repeatedly scattering photons off of an initial tachyon (the DDF formalism). We compute the scattering amplitude of one arbitrary excited string and any number of tachyons in bosonic string theory. At high energies and high mass excited state these amplitudes are determined by a saddle-point in the integration over the positions of the string vertex operators on the sphere (or the upper half plane), thus yielding a generalization of the "scattering equations". We find a compact expression for the amplitude of an excited string decaying into two tachyons, and study its properties for a generic excited string. We find the amplitude is highly erratic as a function of both the precise excited string state and of the tachyon scattering angle relative to its polarization, a sign of chaos.
description: 65 pages, 11 figures; published version
Additional file 5 of Spatio-temporal distribution and international context of bovine viral diarrhoea virus genetic diversity in France
Creators: name: Lescoat, Claire
name: Perrotte, Delphine
name: Barry, Séverine
name: Oden, Élise
name: Herbet, Valentin
name: Beaunée, Gaël
name: Tabouret, Marc
name: Benoit, Fabienne
name: Pitel, Pierre-Hugues
name: Duquesne, Véronique
name: Bailly, Xavier
name: Thézé, Julien
name: Kouokam, Guy
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology
subject: Virology

description: Additional file 5. Validation of the 5’UTR high-throughput sequencing protocol. (A) Relationship between the number of reads mapped and viral load (cycle threshold – Ct) per sample. Dots are coloured according to the sequencing run. (B) Relationship between percentage of reads mapped and viral loads (Cts) per sample. A polynomial regression was fitted for each run and the resulting R2 are displayed.
Casimir Effect confronts Cosmological Constant
Creators: name: Mahajan, Gaurang
name: Sarkar, Sudipta
name: Padmanabhan, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been speculated that the zero-point energy of the vacuum, regularized due to the existence of a suitable ultraviolet cut-off scale, could be the source of the non-vanishing cosmological constant that is driving the present acceleration of the universe. We show that the presence of such a cut-off can significantly alter the results for the Casimir force between parallel conducting plates and even lead to repulsive Casimir force when the plate separation is smaller than the cut-off scale length. Using the current experimental data we rule out the possibility that the observed cosmological constant arises from the zero-point energy which is made finite by a suitable cut-off. Any such cut-off which is consistent with the observed Casimir effect will lead to an energy density which is about 10^{12} times larger than the observed one, if gravity couples to these modes. The implications are discussed.
description: revtex4; four pages; 5 figs
On predicting research grants productivity
Creators: name: Tohalino, Jorge A. V.
name: Amancio, Diego R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Understanding the reasons associated with successful proposals is of paramount importance to improve evaluation processes. In this context, we analyzed whether bibliometric features are able to predict the success of research grants. We extracted features aiming at characterizing the academic history of Brazilian researchers, including research topics, affiliations, number of publications and visibility. The extracted features were then used to predict grants productivity via machine learning in three major research areas, namely Medicine, Dentistry and Veterinary Medicine. We found that research subject and publication history play a role in predicting productivity. In addition, institution-based features turned out to be relevant when combined with other features. While the best results outperformed text-based attributes, the evaluated features were not highly discriminative. Our findings indicate that predicting grants success, at least with the considered set of bibliometric features, is not a trivial task.
Triumvirate of Running Couplings in Small-x Evolution
Creators: name: Kovchegov, Yuri V.
name: Weigert, Heribert
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the inclusion of running coupling corrections into the non-linear small-x JIMWLK and BK evolution equations by resumming all powers of alpha_s N_f in the evolution kernels. We demonstrate that the running coupling corrections are included in the JIMWLK/BK evolution kernel by replacing the fixed coupling constant alpha_s in it with alpha_s (1/r_1^2) alpha_s (1/r_2^2) / alpha_s (1/R^2), where r_1 and r_2 are transverse distances between the emitted gluon and the harder gluon (or quark) off of which it was emitted to the left and to the right of the interaction with the target. In the formalism of Mueller's dipole model r_1 and r_2 are the transverse sizes of ``daughter'' dipoles produced in one step of the dipole evolution. The scale R is a function of two-dimensional vectors r_1 and r_2, the exact form of which is scheme-dependent. We propose using a particular scheme which gives us R as an explicit function of r_1 and r_2.
description: 41 pages
Sterile Neutrino Dark Matter from Generalized $CPT$-Symmetric Early-Universe Cosmologies
Creators: name: Duran, Adam
name: Morrison, Logan
name: Profumo, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize gravitational particle production in a radiation-dominated $CPT$-symmetric universe to non-standard, but also $CPT$-symmetric early universe cosmologies. We calculate the mass of a right-handed "sterile" neutrino needed for it to be the cosmological dark matter. Since generically sterile neutrinos mix with the Standard Model active neutrinos, we use state-of-the-art tools to compute the expected spectrum of gamma rays and high-energy active neutrinos from ultra-heavy sterile neutrino dark matter decay. We demonstrate that the sterile neutrinos are never in thermal equilibrium in the early universe. We show that very high-energy Cherenkov telescopes might detect a signal for sterile neutrino lifetimes up to around 10$^{27}$ s, while a signal in high-energy neutrino telescopes such as IceCube could be detectable for lifetimes up to 10$^{30}$ s, offering a better chance of detection across a vast landscape of possible masses.
description: 12 pages, 3 figures, version accepted for publication, and to appear, in Phys. Rev. D
Interference of Degenerate Polariton Condensates in Microcavities
Creators: name: Liew, T C H
name: Kavokin, A V
name: Shelykh, I A
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate theoretically that the interaction of two degenerate condensates of exciton-polaritons in microcavities leads to polarization dependent parametric oscillations. The resonant polariton-polariton scattering is governed by the polarization of the condensates and can be fully suppressed for certain polarizations. A polarization controlled solid state optical gate is proposed.
description: 4 pages, 4 figures
The Stellar Content of the Post-Starburst S0 Galaxy NGC 5102
Creators: name: Davidge, T. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The stellar content of the S0 galaxy NGC 5102 is investigated. A modest population of bright main sequence stars and red supergiants (RSGs) is detected throughout the western portion of the disk, and the star formation rate (SFR) during the past ten million years is estimated to have been 0.02 solar masses per year. RGB stars are traced out to galactocentric distances of 10 kpc, which corresponds to ~ 14 disk scale lengths. A large population of bright asymptotic giant branch (AGB) stars are seen throughout the western portion of the disk, and it is concluded that (1) stars that formed within the past Gyr comprise ~ 20% of the total stellar disk mass, and (2) the SFR during intermediate epochs in the disk of NGC 5102 was at least 1.4 solar masses per year. It is suggested that NGC 5102 was a spiral galaxy that experienced a galaxy-wide episode of enhanced star formation that terminated a few hundred Myr in the past, and that much of its interstellar medium was ejected in an outflow.
description: To appear in the Astronomical Journal
title: Freeway, crossroads or cul-de-sac
title: the crisis of personal mobility
titleType: Subtitle
Creators: name: Bailey, Peter J. C.
Publisher: name: Lancaster University
Year: 1999

description: This dissertation has two main objectives, to build a social history of the car and its industry from invention to the present and to develop future scenarios, using insights gained from published views of the industry, its 'insiders' and 'outsiders', lobbies and regulators. An underlying theme is one of economic and organisational growth with its tendency to consolidate, complicate and fragment with maturity. Also, the car's success has had other chronic side-effects - waste-creation, pollution, and traffic congestion. These factors have become progressively apparent to the car's 'enemies' and have started to leave their mark on the automotive world through increasing lobbying and regulation. The car's allies are now accepting that something must give - though the protection of personal 'automobility' is rigourously defended. A 'time line' of the car and industry has been created, built around five automotive 'generations' from 1900 to c2020. The generational model is adopted from William Strauss and Neil Howe's 'The Fourth Turning' (op cit 1997). The character of each automotive generation is formed around pseudo-seasonal 'turning points' - from the winter 'crisis' of the horse when Ford's Model 'T' gained ascendancy over the 'craft' of the 'horseless carriage', to a spring 'high' which saw the ascendant GM of Sloan ignite mass consumption following the crisis of the Depression. Subsequently, 'summer' matured with mass customisation leading to the current 'awakening' of an entropic 'autumnal' generation where manufacturer numbers and 'real' product differentiation shrinks, whilst 'virtual' product and service diversity grows bewilderingly and the problems of large scale personal mobility assert themselves. Such diversity and declining disparity hides the underlying threat of decimation of the breed - akin to Stephen Jay Gould's nature of history (op cit 1989). Finally, the paper looks at what may happen in the next destructive 'winter' generation - critically examining the views of environmental lobbies, regulators, the industry and its 'gurus' and developing a personal view of an automobility future developed from two emerging themes - the unraveling of scale and the unraveling of ownership.
Übergangsmetallkomplex-katalysierte Dehydropolymerisation von primären Amin-Boran-Addukten
Creators: name: Anke, Felix
Publisher: name: Universität Rostock
Year: 2018
Subjects: subject: 540 Chemistry & allied sciences

description: Die vorliegende Arbeit umfasst Untersuchungen von frühen und späten Übergangsmetallkomplex-Katalysatorsystemen zur Dehydropolymerisation von Methylamin-Boran sowie die Entwicklung und Dehydrierung von neuartigen Amin-Boran-Addukten zu N-funktionalisierten Polyaminoboranen.