cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A necessary condition for supernova fallback invading newborn neutron-star magnetosphere
Creators: name: Zhong, Yici
name: Kashiyama, Kazumi
name: Shigeyama, Toshikazu
name: Takasao, Shinsuke
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We numerically investigate the dynamics of a supernova fallback accretion confronting with a relativistic wind from a newborn neutron star (NS). The time evolution of the accretion shock in the radial direction is basically characterized by the encounter radius of the flow $r_\mathrm{enc}$ and a dimensionless parameter $ζ\equiv L/\dot M_\mathrm{fb}c^2$, where $L$ is the NS wind luminosity and $\dot M_\mathrm{fb}$ is the fallback mass accretion rate. We find that the critical condition for the fallback matter to reach near the NS surface can be simply described as $ζ< ζ_\mathrm{min} \equiv GM_*/c^2r_\mathrm{enc}$ or $r_\mathrm{enc}L/G M_* \dot M_\mathrm{fb} < 1$ independent of the wind Lorentz factor, where $M_*$ is the NS mass. With combining the condition for the fallback matter to bury the surface magnetic field under the NS crust, we discuss the possibility that the trifurcation of NSs into rotation-powered pulsars, central compact objects (CCOs), and magnetars can be induced by supernova fallback.
description: 14 pages, 8 figures; Accepted for publication in The Astrophysical Journal
Effect of antioxidant supplementation on pig and horse gamete storage
Creators: name: Giaretta, Elisa <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: VET/02 Fisiologia veterinaria

description: According to recent studies, antioxidant supplementation on gamete processing and/or storage solutions improvesgamete quality parameters, after cooling or storage at sub zero temperature. The aim of the present study was to investigate the effects of antioxidant supplementation on pig and horse gamete storage. 
The first study aimed to determine the effects of resveratrol (RESV) on the apoptotic status of porcine oocytes vitrified by Cryotop method, evaluating phosphatidylserine (PS) exteriorization and caspases activation. RESV(2µM) was added during: IVM (A); 2 h post-warming incubation (B); vitrification/warming and 2 h post-warming incubation (C); all previous phases (D). The obtained data demonstrate that RESV supplementation in the various steps of IVM and vitrification/warming procedure can modulate the apoptotic process, improving the resistance of porcine oocytes to cryopreservation-induced damage.
In the second work different concentrations of RESV (10, 20, 40, and 80µM) were added during liquid storage of stallion sperm for 24 hours at either 10°C or 4°C, under anaerobic conditions. Our findings demonstrate that RESV supplementation does not enhance sperm quality of stallion semen after 24 hours of storage. Moreover, the highest RESV concentrations tested (40 and 80µM) could damage sperm functional status, probably acting as pro-oxidant.
Finally, in the third work other two antioxidants, ascorbic acid (AA) (100 µM) and glutathione (GSH) (5mM) were added on boar freezing and/or thawing solutions. In our study different sperm parameters  were evaluated before freezing and at 30 and 240 minutes after thawing. Our results showed that GSH and AA significantly improved boar sperm cryotolerance, especially when supplemented together to both freezing and thawing media. This improvement was observed in sperm viability and acrosome integrity, sperm motility, and nucleoprotein structure. Although ROS levels were not much increased by freeze-thawing procedures, the addition of GSH and AA to both freezing and thawing extenders significantly decreased intracellular peroxide levels.
Spatial and temporal characterisation of ground deformation recorded by geodetic techniques
Creators: name: Gualandi, Adriano <1987>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: GEO/10 Geofisica della terra solida

description: A critical point in the analysis of ground displacements time series is the development of data driven methods that allow the different sources that generate the observed displacements to be discerned and characterised. A widely used multivariate statistical technique is the Principal Component Analysis (PCA), which allows reducing the dimensionality of the data space maintaining most of the variance of the dataset explained. Anyway, PCA does not perform well in finding the solution to the so-called Blind Source Separation (BSS) problem, i.e. in recovering and separating the original sources that generated the observed data. This is mainly due to the assumptions on which PCA relies: it looks for a new Euclidean space where the projected data are uncorrelated. The Independent Component Analysis (ICA) is a popular technique adopted to approach this problem. However, the independence condition is not easy to impose, and it is often necessary to introduce some approximations. To work around this problem, I use a variational bayesian ICA (vbICA) method, which models the probability density function (pdf) of each source signal using a mix of Gaussian distributions. This technique allows for more flexibility in the description of the pdf of the sources, giving a more reliable estimate of them. Here I present the application of the vbICA technique to GPS position time series. First, I use vbICA on synthetic data that simulate a seismic cycle (interseismic + coseismic + postseismic + seasonal + noise) and a volcanic source, and I study the ability of the algorithm to recover the original (known) sources of deformation. Secondly, I apply vbICA to different tectonically active scenarios, such as the 2009 L'Aquila (central Italy) earthquake, the 2012 Emilia (northern Italy) seismic sequence, and the 2006 Guerrero (Mexico) Slow Slip Event (SSE).
Searching and retrieving in content-based repositories of formal mathematical knowledge
Creators: name: Guidi, Ferruccio <1969>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: INF/01 Informatica

description: In this thesis, the author presents a query language for an RDF (Resource Description Framework) database and discusses its applications in the context of the HELM project (the Hypertextual Electronic Library of Mathematics). This language aims at meeting the main requirements coming from the RDF community. in particular it includes: a human readable textual syntax and a machine-processable XML (Extensible Markup Language) syntax both for queries and for query results, a rigorously exposed formal semantics, a graph-oriented RDF data access model capable of exploring an entire RDF graph (including both RDF Models and RDF Schemata), a full set of Boolean operators to compose the query constraints, fully customizable and highly structured query results having a 4-dimensional geometry, some constructions taken from ordinary programming languages that simplify the formulation of complex queries. The HELM project aims at integrating the modern tools for the automation of formal reasoning with the most recent electronic publishing technologies, in order create and maintain a hypertextual, distributed virtual library of
formal mathematical knowledge. In the spirit of the Semantic Web, the documents of this library include RDF metadata describing their structure and content in a
machine-understandable form. Using the author's query engine, HELM exploits this information to implement some functionalities allowing the interactive and automatic
retrieval of documents on the basis of content-aware requests that take into account the mathematical nature of these documents.
Photograph of consultant with class participants
Creators: name: Baron, Bertille
name: Barzilai, Maya
name: Dudek, Brooke
name: Gerais, Tanutamon
name: Graham, Madison
name: Khalil, Nubantood
name: Lee, Hyunjin
name: Liang, Siyu
name: Oakley, Madeleine
name: Pennanen, Genevieve
name: Pfiffner, Alexandra
name: Sande, Hannah
name: Schaffer, Lily
name: Slone, Ares (Sasha)
name: Wang, Zhuxin (Ivy)
name: Wyschogrod, Ezra
name: Zhao, Yushi
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: fia

description: This photograph was taken at a poster session where students presented their final projects from the Field Methods class. Back row, left to right: Zhao, Oakley, Gerais, Khalil, Liang, Dudek. Middle row, left to right: Schaffer, Baron, Pfiffner, Lee, Wang, Wyschogrod, Sande. Front row, left to right: Graham, Slone, Pennanen, Barzilai.
A case study of curriculum leadership and development with a global perspective
Creators: name: Myronuk, Carol A.
Publisher: name: University of British Columbia
Year: 2008

description: In April, 1990, a team of teachers at General Wolfe Elementary School, Vancouver, B.C., began the planning and design of an interrelated curriculum with a global perspective. The implementation of the interrelated grade 6 and 7 curriculum, named "Wolfe's E.Y.E.S. (Elementary Youth Earth Studies)", commenced in September, 1990. During the 1990-1991 school year, the teaching team concentrated its efforts on cross-curricular approaches to develop a practical infrastructure that significantly connected skills and content from the various curricular domains. Their eclectic reworking of the school's existing curriculum models to include a global perspective provided opportunities for the team to gain professional knowledge within the context of their own classrooms. The problems addressed in this study are: What does the infrastructure of the global curriculum look like; and what were the roles of the practitioners in the context of this curriculum development? This study is a unique-case description of a site-developed curriculum initiated by a team of elementary teachers. This recording of their first year of collaboration is derived from their planning notes, day-books, unit plans, files, yearly previews, journals, photographs and audio and video tapes. The purpose of this document is to present evidence of curriculum leadership and development in global education. This study consists of descriptions of the global curriculum and the team's leadership roles, followed by a two part comparative analysis using elements indicating effective curriculum leadership and development. The study concludes that indicators of effective curriculum leadership and development are present, that the team's work has influenced the school's culture, and that practising elementary teachers can assume leadership in initiating curriculum change.
Επούλωση δέρματος και ο ρόλος της νανοτεχνολογίας-Βιβλιογραφική ανασκόπηση
Creators: name: Κουτσούκου, Θεοφανή Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: subject: Επούλωση δέρματος
subject: Νανοτεχνολογία
subject: Νανοεπιστήμες
subject: Wound healing
subject: Nanotechnology
subject: FOS: Nanotechnology
subject: Nanoscience

description: Η παρούσα εργασία είναι μία βιβλιογραφική ανασκόπηση ερευνών και ιατρικών άρθρων των τελευταίων ετών γύρω από τη διαδικασία της επούλωσης δέρματος και το ρόλο της Νανοτεχνολογίας της υφίσταται μέχρι σήμερα.Η χρήση της Νανοτεχνολογίας προσδοκά να συνδυάσει της φυσιολογικές διεργασίες της επούλωσης της τραύματος με προϊόντα που στοχεύουν στην βελτίωσή της.Οι Νανοσυσκευές είναι εξαιρετικά καινοτόμες, αν σκεφτούμε τα προτερήματά της από τη χρήση της.Σαφώς υπάρχουν πλεονεκτήματα και μειονεκτήματα από τη χρήση προιόντων νανοτεχνολογίας, όμως προκειμένου να επιτύχουμε καλύτερη επούλωση και αναγέννηση δέρματος η Νανοτεχνολογίας και τα προιόντα της είναι επιτακτική.
description: The following paper is a bibliographic review of recent years' research and medical articles on the process of wound healing and the main role of Nanotechnology based on the applications and new products that are being used in everyday medical practise.Nanotechnology and nanoscience is a promising and necessary tool to proceed beyond the common products used so far for wound healing. Of course, like every technological approach in the science’s field has its one dis-advantages as well. But in order to aim to a better perspective concerning the wound healing and skin regeneration the presence of Nanotechnological products is indispensable.
Fuzzing Symbolic Expressions
Creators: name: Borzacchiello, Luca
name: Coppa, Emilio
name: Demetrescu, Camil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Recent years have witnessed a wide array of results in software testing, exploring different approaches and methodologies ranging from fuzzers to symbolic engines, with a full spectrum of instances in between such as concolic execution and hybrid fuzzing. A key ingredient of many of these tools is Satisfiability Modulo Theories (SMT) solvers, which are used to reason over symbolic expressions collected during the analysis. In this paper, we investigate whether techniques borrowed from the fuzzing domain can be applied to check whether symbolic formulas are satisfiable in the context of concolic and hybrid fuzzing engines, providing a viable alternative to classic SMT solving techniques. We devise a new approximate solver, FUZZY-SAT, and show that it is both competitive with and complementary to state-of-the-art solvers such as Z3 with respect to handling queries generated by hybrid fuzzers.
Παρασκευή νανοσωματιδίων πολυγαλακτικού-γλυκολικού οξέος (plga) με ενθυλακωμένη κουρκουμίνη και επικάλυψη χιτοζάνης για καρδιαγγειακές εφαρμογές
Creators: name: Μαυρομανώλης, Χαρίσιος Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Νανοσωματίδια πολυγαλακτικού γλυκολικού οξέος
Κουρκουμίνη
Χιτοζάνη
Polylacti-co-clycolic acid nanoparticles
Curcumin
Chitosan

description: Η αθηροσκλήρωση αποτελεί επικρατούσα νόσο που μαστίζει τις σύγχρονες κοινωνίες. Η νανοτεχνολογία μπορεί να προσφέρει νέες εναλλακτικές μεθόδους θεραπείας με τη χρήση ειδικών συστημάτων ενσωμάτωσης φαρμακευτικών ουσιών σε πολυμερικούς φορείς για καλύτερη και πιο αποτελεσματική στόχευση και σταδιακή αποδέσμευση και αποδόμηση. Η κουρκουμίνη είναι μια ουσία που έχει ποικίλες ευεργετικές ιδιότητες μεταξύ των οποίων αντιοξειδωτικές, αντιφλεγμονώδεις και αντιμικροβιακές και αν ενσωματωθεί σε συστήματα με πολυμερικές μήτρες PLGA ή/και χιτοζάνης με τις τεχνικές electrospraying και nanoprecipitation, μπορεί να δημιουργηθούν επιλεκτικά συστήματα σταδιακής αποδέσμευσης με επιθυμητές ιδιότητες. Στη συγκεκριμένη εργασία, έγινε παρασκευή νανοσωματιδίων με ενθυλάκωση κουρκουμίνης τόσο με electrospraying όσο και με nanoprecipitation και έγινε χαρακτηρισμός αυτών με μικροσκοπία ατομικών δυνάμεων
description: Atherosclerosis is a prevailing disease in the modern societies. Nanotechnology can provide with new alternative therapies with the use of specific systems encapsulating pharmaceutical agents in polymeric carriers for better and more efficient targeting and controlled release and biodegradation. Curcumin is a substance which has various beneficial properties, including antioxidant, anti-inflammatory and antimicrobial and if encapsulated in systems with polymeric matrices of PLGA or/and chitosan with the methods of electrospraying and nanoprecipitation, selective systems of controlled release with desired properties can be created. In this work, nanoparticles were created with the encapsulation of curcumin both with electrospraying and nanoprecipitation and their characterization was done with atomic force microscopy
Προσομοίωση πλημμυρικών φαινομένων με τη συμβολή ΣμηΕΑ
Creators: name: Τσελεπής, Αστέριος Ζαχαρία
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Πλημμύρα
ΣμηΕΑ
Προσομοίωση
Flood event
UAS
Simulation

description: Η συγκεκριμένη διπλωματική πραγματεύεται την δυνατότητα εισαγωγής μιας νέας μεθόδου αποτύπωσης λεκανών απορροής, αλλά και προσομοίωσης πλημμυρικών φαινομένων. Η βασική αλλαγή στη υφιστάμενη μεθοδολογία είναι η εισαγωγή των Συστημάτων μη Επανδρωμένων Αεροσκαφών στην συλλογή δεδομένων, με τα οποία ο μελετητής θα κατασκευάσει ένα εδαφικό υπόβαθρο υψηλής ανάλυσης. Με την απόκτηση του υποβάθρου αυτού, ξεκινάει η διαδικασία επεξεργασίας του υποβάθρου, η συλλογή περεταίρω δεδομένων και οι επεξεργασία ολόκληρης της διαθέσιμης πληροφορίας σε περιβάλλον αρχικά Γεωγραφικών Συστημάτων Πληροφοριών, και στην συνέχεια σε περιβάλλον πιο εξειδικευμένων υδρολογικών λογισμικών για την ορθή κατασκευή του μοντέλου βροχής απορροής, αλλά και των αντίστοιχων διατομών. Έπειτα από την επιτυχή εκτέλεση του μοντέλου πραγματοποιείται επαλήθευση των αποτελεσμάτων με πραγματικά δεδομένα τα οποία λειτουργούν ως μάρτυρας. Η εφαρμογή ολοκληρώνεται με επιτυχία με αποτέλεσμα την διεύρυνση του τρόπου μελέτης αντίστοιχων περιπτώσεων
description: This thesis introduces a new method of capturing watersheds and simulating flooding phenomena. What’s different from the existing methodology is the use of Unmanned Aerial Systems into the data collection. Using the UAS, the researcher will be able to build a high-resolution territorial background. Acquiring this background starts the processes of background processing, further data collection and processing of all available information in an initially Geographic Information Systems environment, followed by more specialized hydrological software in order to properly construct the rainwater runoff model, but also the corresponding cross sections. After the successful execution of the model, the results are verified with real data that acts as a witness. The implementation is successfully completed resulting in a broadening of the way case studies are studied
Ο ρόλος της λιπιδικής υπεροξείδωσης και των αντιοξειδωτικών στην οξειδωτική τροποποίηση των LDL λιποπρωτεϊνών
Creators: name: Πολυχρονόπουλος, Αλέξιος Διονύσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ελεύθερες ρίζες
Αντιοξειδωτικά
Λιπιδική υπεροξείδωση
Free radicals
Antioxidants
Lipid peroxidosis

description: Οι ελεύθερες ρίζες και οι οξειδωτικές μεταβολές που προκαλούν στον οργανισμό, έχουν μεγάλη σημασία για τη σωστή λειτουργία των μικροσκοπικών και κατ’ επέκταση των μακροσκοπικών βιολογικών δομών. Μία από τις συνέπειες των οξειδωτικών τροποποιήσεων που υφίσταται ο οργανισμός είναι η οξειδωτική τροποποίηση των πολυακόρεστων λιπαρών οξέων των LDL λιποπρωτεϊνών. Ένα από τα αποτελέσματα αυτής της διεργασίας, που αλλιώς καλείται λιπιδική υπεροξείδωση, είναι η πρόκληση αθηρωματικών πλακών, που επάγονται από οξειδωμένες LDL λιποπρωτεΐνες. Ο ρόλος των αντιοξειδωτικών παραγόντων στην ελαχιστοποίηση των δυσμενών επιδράσεων αυτής της παθολογικής κατάστασης είναι σημαντικός, καθώς έχει βρεθεί ότι παίζουν καταλυτικό ρόλο στη ρύθμιση των οξειδωτικών φαινομένων στις λιποπρωτεΐνες. Τέτοιοι αντιοξειδωτικοί παράγοντες είναι και τα υδροξυπαράγωγα του κινναμωνικού οξέος. Η παρούσα διπλωματική εργασία πραγματεύεται την επίδραση των εν λόγω ενώσεων στις διαδικασίες οξείδωσης των LDL λιποπρωτεϊνών. Μία από τις μεθόδους μελέτης της αντιοξειδωτικής δράσης είναι η φασματοσκοπία υπεριώδους ακτινοβολίας. Η μέθοδος αυτή παρέχει μία ποσοτική εκτίμηση (μέσω της τιμής lag time ή χρόνου καθυστέρησης) της ικανότητας του αντιοξειδωτικού να καθυστερεί μία εργαστηριακά επαγόμενη οξείδωση των LDL. Από τη φασματοσκοπική μελέτη εξάγεται τελικά μία χαρακτηριστική καμπύλη οξείδωσης. Μέσω αυτής δύναται να μετρηθεί ο χρόνος καθυστέρησης (lag time) της οξείδωσης των LDL από διαφορετικά είδη και συγκεντρώσεις υδροξυπαραγώγων του κινναμωνικού οξέος.
description: The free radicals and the oxidative modifications caused to our body are of great importance for the balance of the microscopical and macroscopical biological structures. One of the consequences of these oxidative modifications is the acidosis of the LDL polysaturated fat acids. This procedure, that is called lipid peroxidosis, results in the formation of atheromatic plaques to the vessel walls, consisted of oxidized LDL. The role of antioxidants for the minimization of the LDL oxidative damage is very important. It has been found, that antioxidants play a key-role in the regulation of the oxidative phenomena in lipoproteins. Hydroxiderivatives of cinnamic acid are some of these antioxidant factors. This paper discusses the effect of these compounds to the procedures of LDL oxidation. The antioxidant activity can be studied with UV spectroscopy. This technique provides a quantitative assessment of the antioxidant capability to delay(via the calculation of lag time) an experimentally caused acidosis of LDL. An acidosis curve of oxidized lipoproteins is finally extracted using the spectroscopic technique. The lag time of acidosis by several types and concentrations of hydroxiderivatives of cinnamic acid can be measured by analyzing this curve.
Superconductivity in Heavy Alkaline-Earths Intercalated Graphites
Creators: name: Kim, J. S.
name: Boeri, L.
name: O'Brien, J. R.
name: Razavi, F. S.
name: Kremer, R. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the discovery of superconductivity below 1.65(6) K in Sr-intercalated graphite SrC6, by susceptibility and specific heat (Cp) measurements. In comparison with CaC6, we found that the anisotropy of the upper critical fields for SrC6 is much reduced. The Cp anomaly at Tc is smaller than the BCS prediction indicating an anisotropic superconducting gap for SrC6 similar to CaC6. The significantly lower Tc of SrC6 as compared to CaC6 can be understood in terms of "negative" pressure effects, which decreases the electron-phonon coupling for both in-plane intercalant and the out-of-plane C phonon modes. We observed no superconductivity for BaC6 down to 0.3 K.
description: 4 pages, 4 figures, submitted to Phys. Rev. Lett
A close look to quasar-triggered winds: is the black hole-bulge relation self-regulated?
Creators: name: Monaco, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the role of feedback from AGNs on the formation of spheroidal galaxies. The energy released by an accreting Black Hole (BH) may be injected into the ISM through blast waves arising directly from the central engine, radiation pressure or radiative heating. A scenario is described in which radiative heating perturbs the methabolism of a star-forming spheroid, leading to a critical stage where SNe form a cold expanding shell, pushed out of the galaxy by radiation pressure from the AGN. This mechanism can regulate the BH--bulge relation to the observed value. However, this relation may be simply imprinted by the mechanism responsible for the nearly complete loss of angular momentum of the gas that accretes onto the BH. Using a novel model of galaxy formation that includes AGNs, we show that models without self-regulation have problems in reproducing the correct slope of the AGN luminosity function, while models with winds give a much better fit; however, all these models are almost indistingishable as far as their predicted BH--bulge relation is concerned. Finally, we show that the downsizing of the faint AGNs is most likely due to kinetic feedback in star-forming bulges.
description: 8 pages, 3 postscript figures, proceedings of the Workshop on "AGN and galaxy evolution", Specola Vaticana, Castel Gandolfo, Italy, 3-6 October 2005
Analytical solution of the Euler-Poinsot problem
Creators: name: Murakami, Cássio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: 70B10, 70E10, 70K10

description: In the present paper, an analysis was performed on the torque-free motion of a rigid body, developing Euler's analytical solution and Poinsot's geometric solution. From mathematical formulations, the analytical solution for the time evolution of the angular velocity and Euler's angles was obtained and described given some initial conditions. Besides, an animation of Poinsot's geometric solution was elaborated and a study was carried out on the conditions in which the herpolhode forms a closed curve. Finally, an algorithm was developed in the software Scilab that displays the analytical and numerical solutions obtained, it also generates an animation of the geometric solution, moreover to having an algorithm that generates closed herpolhodes.
description: 15 pages, 7 figures
Exact solution for wave scattering from black holes: Formulation
Creators: name: Motohashi, Hayato
name: Noda, Sousuke
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We establish an exact formulation for wave scattering of a massless field with spin and charge by a Kerr-Newman-de Sitter black hole. Our formulation is based on the exact solution of the Teukolsky equation in terms of the local Heun function, and does not require any approximation. It serves as simple exact formulae with arbitrary high precision, which realize fast calculation without restrictions on model parameters. We highlight several applications including quasinormal modes, cross section, reflection/absorption rate, and Green function.
description: 22 pages, 6 figures; matches published version
An Activity Catalogue of Southern Stars
Creators: name: Jenkins, J. S.
name: Jones, H. R. A.
name: Tinney, C. G.
name: Butler, R. P.
name: McCarthy, C.
name: Marcy, G. W.
name: Pinfield, D. J.
name: Carter, B. D.
name: Penny, A. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have acquired high-resolution echelle spectra of 225 F6-M5 type stars in the southern hemisphere. The stars are targets or candidates to be targets for the Anglo-Australian Planet Search. CaII HK line cores were used to derive activity indices for all of these objects. The indices were converted to the Mt. Wilson system of measurements and logR'HK values determined. A number of these stars had no previously derived activity indices. In addition we have also included the stars from Tinney et al. (2002) using our Mt. Wilson calibration. The radial-velocity instability (also known as jitter) level was determined for all 21 planet-host stars in our dataset. We find the jitter to be at a level considerably below the radial-velocity signatures in all but one of these systems. 19 stars from our sample were found to be active (logR'HK > -4.5) and thus have high levels of jitter. Radial-velocity analysis for planetary companions to these stars should precede with caution.
description: 12 pages, 4 figures, 2 tables
Quantum statistics and data analysis
Creators: name: Κοσμίδης, Ανέστης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Κβαντική στατιστική
Ανάλυση δεδομένων
Κβαντική μηχανική μάθηση
Quantum statistics
Data analysis
Quantum machine learning

description: Τα κριτήρια για την επιλογή μοντέλων κβαντικής πιθανότητας έναντι μοντέλων πιθανότητας Kolmogorov εκφράζονται συνήθως με βάση τις ανισότητες που διαμορφώνονται από την αρχική ανισότητα Bell. Αν η ανισότητα παραβιάζεται, τότε η πιθανότητα Kolmogorov πρέπει να αντικατασταθεί από την κβαντική πιθανότητα. Συζητούνται αυτά τα κριτήρια και οι μέγιστες παραβιάσεις τους και παρουσιάζεται η εφαρμογή τους στα σύνολα δεδομένων. Ερευνάται η δυνατότητα εφαρμογής μοντέλων κβαντικής πιθανότητας και συναφών στατιστικών αλγορίθμων σε τρεις επιλεγμένες εφαρμογές, δηλαδή: 1) παραβίαση της ανισότητας των Wigner-d’Espagnat από ένα απλό σύνολο δεδομένων, 2) k-Means μέθοδος clustering εναντίον κβαντικής μεθόδου clustering, 3) Πολλαπλή γραμμική παλινδρόμηση εναντίον κβαντικής παλινδρόμησης
description: Criteria for selecting quantum probability models versus Kolmogorov probability models are usually expressed in terms of inequalities formulated from the original Bell inequality. If the inequality is violated, Kolmogorov probability should be replaced by quantum probability. We discuss these criteria and the maximal violations and we illustrate the applicability with data sets. We explore the possibility to apply quantum probability models and related statistical algorithms in three selected applications, namely: 1) violation of Wigner-d’Espagnat inequality by a simple data set, 2) k-Means clustering versus quantum clustering, 3) Multiple linear regression versus quantum regression
Discovery of a 310-day Period from the Enshrouded Massive System NaSt1 (WR 122)
Creators: name: Lau, Ryan M.
name: Tinyanont, Samaporn
name: Hankins, Matthew J.
name: Ashley, Michael C. B.
name: De, Kishalay
name: Filippenko, Alexei V.
name: Hillenbrand, Lynne A.
name: Kasliwal, Mansi M.
name: Mauerhan, Jon C.
name: Moffat, Anthony F. J.
name: Moore, Anna M.
name: Smith, Nathan
name: Soon, Jamie
name: Soria, Roberto
name: Travouillon, Tony
name: van der Hucht, Karel A.
name: Williams, Peredur M.
name: Zheng, WeiKang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present optical and infrared (IR) light curves of NaSt1, also known as Wolf-Rayet (WR) 122, with observations from Palomar Gattini-IR (PGIR), the Zwicky Transient Facility (ZTF), the Katzman Automatic Imaging Telescope (KAIT), the Asteroid Terrestrial-impact Last Alert System (ATLAS), and the All-Sky Automated Survey for Supernovae (ASAS-SN). We identify a $P=309.7\pm0.7$ d photometric period from the optical and IR light curves that reveal periodic, sinusoidal variability between 2014 July and 2021 July. We also present historical IR light curves taken between 1983 July and 1989 May, which show variability consistent with the period of the present-day light curves. In the past, NaSt1 was brighter in the $J$ band with larger variability amplitudes than the present-day PGIR values, suggesting that NaSt1 exhibits variability on longer ($\gtrsim$ decade) timescales. Sinusoidal fits to the recent optical and IR light curves show that the amplitude of NaSt1's variability differs at various wavelengths and also reveal significant phase offsets of $17.0\pm2.5$ d between the ZTF $r$ and PGIR $J$ light curves. We interpret the $310$ d photometric period from NaSt1 as the orbital period of an enshrouded massive binary. We suggest that the photometric variability of NaSt1 may arise from variations in the line-of-sight optical depth toward circumstellar optical/IR emitting regions throughout its orbit due to colliding-wind dust formation. We speculate that past mass transfer in NaSt1 may have been triggered by Roche-lobe overflow (RLOF) during an eruptive phase of an Ofpe/WN9 star. Lastly, we argue that NaSt1 is no longer undergoing RLOF mass transfer.
description: 20 Pages, 7 Figures, 5 Tables, 1 Table Attachment, Accepted to ApJ
Doubling measures, monotonicity, and quasiconformality
Creators: name: Kovalev, Leonid V.
name: Maldonado, Diego
name: Wu, Jang-Mei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 30C65; 28A75, 42A55, 47H05

description: We construct quasiconformal mappings in Euclidean spaces by integration of a discontinuous kernel against doubling measures with suitable decay. The differentials of mappings that arise in this way satisfy an isotropic form of the doubling condition. We prove that this isotropic doubling condition is satisfied by the distance functions of certain fractal sets. Finally, we construct an isotropic doubling measure that is not absolutely continuous with respect to the Lebesgue measure.
description: 20 pages. Revised to address referee's comments
Improving human ankle joint position sense using an artificial tongue-placed tactile biofeedback
Creators: name: Vuillerme, Nicolas
name: Chenu, Olivier
name: Demongeot, Jacques
name: Payan, Yohan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Proprioception is comprised of sensory input from several sources including muscle spindles, joint capsule, ligaments and skin. The purpose of the present experiment was to investigate whether the central nervous system was able to integrate an artificial biofeedback delivered through electrotactile stimulation of the tongue to improve proprioceptive acuity at the ankle joint. To address this objective, nine young healthy adults were asked to perform an active ankle-matching task with and without biofeedback. The underlying principle of the biofeedback consisted of supplying subjects with supplementary information about the position of their matching ankle position relative to their reference ankle position through a tongue-placed tactile output device (Tongue Display Unit). Measures of the overall accuracy and the variability of the positioning were determined using the absolute error and the variable error, respectively. Results showed more accurate and more consistent matching performances with than without biofeedback, as indicated by decreased absolute and variables errors, respectively. These findings suggested that the central nervous system was able to take advantage of an artificial tongue-placed tactile biofeedback to improve the position sense at the ankle joint.
A topic review on probing primordial black hole dark matter with scalar induced gravitational waves
Creators: name: Yuan, Chen
name: Huang, Qing-Guo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Primordial black holes (PBHs) are supposed to form from the collapse of over-densed regions generated by large scalar curvature perturbations in the radiation dominated era. Despite decades of various independent observations, the nature of dark matter (DM) remains highly puzzling. Recently, PBH DM have aroused interest since they provide an attracting explanation to the merger events of binary black holes discovered by LIGO/VIRGO and may play an important role on DM. During the formation of PBH, gravitational waves will be sourced by linear scalar perturbations at second-order, known as the scalar-induced gravitational waves (SIGWs), which provides a new way to hunt for PBH DM. This topic review mainly focus on the physics about SIGWs accompanying the formation of PBH DM.
description: 23 pages, 7 figures; version accepted by iScience
Properties of Active Galaxies Deduced from H I Observations
Creators: name: Ho, Luis C.
name: Darling, Jeremy
name: Greene, Jenny E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We completed a new survey for H I emission for a large, well-defined sample of 154 nearby (z < 0.1) galaxies with type 1 AGNs. We make use of the extensive database presented in a companion paper to perform a comprehensive appraisal of the cold gas content in active galaxies and to seek new strategies to investigate the global properties of the host galaxies and their relationship to their central black holes (BHs). We show that the BH mass obeys a strong, roughly linear relation with the host galaxy's dynamical mass. BH mass follows a looser, though still highly significant, correlation with the maximum rotation velocity of the galaxy, as expected from the known scaling between rotation velocity and central velocity dispersion. Neither of these H I-based correlations is as tight as the more familiar relations between BH mass and bulge luminosity or velocity dispersion, but they offer the advantage of being insensitive to the glare of the nucleus and therefore are promising new tools for probing the host galaxies of both nearby and distant AGNs. We present evidence for substantial ongoing BH growth in the most actively accreting AGNs. In these nearby systems, BH growth appears to be delayed with respect to the assembly of the host galaxy but otherwise has left no detectable perturbation to its mass-to-light ratio or its global gas content. The host galaxies of type 1 AGNs, including those luminous enough to qualify as quasars, are generally gas-rich systems, possessing a cold interstellar medium reservoir at least as abundant as that in inactive galaxies of the same morphological type. This calls into question current implementations of AGN feedback in models of galaxy formation that predict strong cold gas depletion in unobscured AGNs. (Abridged)
description: To appear in ApJ; 14 pages
Leading or Following? Dyadic Robot Imitative Interaction Using the Active Inference Framework
Creators: name: Wirkuttis, Nadine
name: Tani, Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: This study investigated how social interaction among robotic agents changes dynamically depending on the individual belief of action intention. In a set of simulation studies, we examine dyadic imitative interactions of robots using a variational recurrent neural network model. The model is based on the free energy principle such that a pair of interacting robots find themselves in a loop, attempting to predict and infer each other's actions using active inference. We examined how regulating the complexity term to minimize free energy determines the dynamic characteristics of networks and interactions. When one robot trained with tighter regulation and another trained with looser regulation interact, the latter tends to lead the interaction by exerting stronger action intention, while the former tends to follow by adapting to its observations. The study confirms that the dyadic imitative interaction becomes successful by achieving a high synchronization rate when a leader and a follower are determined by developing action intentions with strong belief and weak belief, respectively.
description: 8 pages, 5 figures
Two-parameter generalization of the logarithm and exponential functions and Boltzmann-Gibbs-Shannon entropy
Creators: name: Schwammle, V.
name: Tsallis, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The $q$-sum $x \oplus_q y \equiv x+y+(1-q) xy$ ($x \oplus_1 y=x+y$) and the $q$-product $x\otimes_q y \equiv [x^{1-q} +y^{1-q}-1]^{\frac{1}{1-q}}$ ($x\otimes_1 y=x y$) emerge naturally within nonextensive statistical mechanics. We show here how they lead to two-parameter (namely, $q$ and $q^\prime$) generalizations of the logarithmic and exponential functions (noted respectively $\ln_{q,q^\prime}x$ and $e_{q,q^\prime}^{x}$), as well as of the Boltzmann-Gibbs-Shannon entropy $S_{BGS}\equiv -k \sum_{i=1}^Wp_i \ln p_i$ (noted $S_{q,q^\prime}$). The remarkable properties of the $(q,q^\prime)$-generalized logarithmic function make the entropic form $S_{q,q^\prime} \equiv k \sum_{i=1}^W p_i \ln_{q,q^\prime}(1/p_i)$ to satisfy, for large regions of $(q,q^\prime)$, important properties such as {\it expansibility}, {\it concavity} and {\it Lesche-stability}, but not necessarily {\it composability}.
description: 9 pages, 4 figures
Child abuse and neglect education in schools of nursing in the province of British Columbia and the state of Washington
Creators: name: Watt, Judith Louise
Publisher: name: University of British Columbia
Year: 2008

description: Child abuse and neglect has been an historical problem which has only entered our consciousness as legislation to protect children has been passed. Public and media awareness has mushroomed along with the number of disclosures and increasingly dramatic stories of abuse and neglect. Nurses, because of their many different places of practise, come in contact with many victims and offenders. How does their education prepare them for this task? The study surveyed of schools of nursing in British Columbia and the state of Washington through the directors of nursing, associate deans, deans and coordinators, to instructors and faculty members who teach child abuse and neglect education. Instructors and faculty members completed a questionnaire of 23 questions about child abuse and neglect education in their schools of nursing and about their own educational preparation and experience. The questionnaire was expanded from a similar study done in 1985-86. Not all schools of nursing have child abuse and neglect education. Of those indicating they teach child abuse and neglect, most devote 2-4 hours to teaching. Child abuse and neglect education is taught in a wide variety of nursing subject areas. There are fewer resources (both personnel and print and media) being used in teaching child abuse and neglect in 1993 than in 1985-86. The majority of faculty members and instructors were not educated in the province or state in which they now teach and also the majority did not receive child abuse and neglect education during their baccalaureate education. Instructors and faculty members from Washington had more suggestions for improving child abuse and neglect education than did those from British Columbia. Education about reporting child abuse and nursing and sexually transmitted diseases is inconsistent. There is very little child abuse and neglect interprofessional education. While the diversification of nurses' job placements makes them ideal professionals to identify, prevent, and treat child abuse and neglect, their educational preparation does not appear adequate for this task.
Newly observed $X(4630)$: a new charmoniumlike molecule
Creators: name: Yang, Xin-Dian
name: Wang, Fu-Lai
name: Liu, Zhan-Wei
name: Liu, Xiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Very recently, the LHCb Collaboration at the Large Hadron Collider at CERN observed new resonance $X(4630)$. The $X(4630)$ is decoded as a charmoniumlike molecule with hidden-strange quantum number well in the one boson exchange mechanism. Especially, the study of its hidden-charmed decays explicitly shows the dominant role of $J/ψϕ$ among all allowed hidden-charmed decays of $X(4630)$, which enforces the conclusion of $X(4630)$ as a charmoniumlike molecule. The discovery of the $X(4630)$ is a crucial step of constructing charmoniumlike molecule zoo.
description: 8 pages, 5 figures; accepted by Euro. Phys. J. C
Analytical external spherical solutions in entangled relativity
Creators: name: Arruga, Denis
name: Minazzoli, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this manuscript, we present analytical external spherical solutions of entangled relativity, which we compare to numerical solutions obtained in a Tolman-Oppenheimer-Volkoff framework. Analytical and numerical solutions match perfectly well outside spherical compact objects, therefore validating both types of solutions at the same time. The analytical external (hairy) solutions -- which depend on two parameters only -- may be used in order to easily compute observables -- such as X-ray pusle profiles -- without having to rely on an unknown equation of state for matter inside the compact object.
description: 11 pages, 10 figures. Few changes and additions in v2
Search for squarks and gluinos in events with jets and missing transverse energy in ppbar collisions at sqrt(s)=1.96 TeV
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The results of a search for squarks and gluinos using data from ppbar collisions recorded at a center-of-mass energy of 1.96 TeV by the D0 detector at the Fermilab Tevatron Collider are reported. The topologies analyzed consist of acoplanar-jet and multijet events with large missing transverse energy. No evidence for the production of squarks or gluinos was found in a data sample of 310 pb-1. Lower limits of 325 and 241 GeV were derived at the 95% C.L. on the squark and gluino masses, respectively, within the framework of minimal supergravity with tan(beta)=3, A0=0, and mu<0.
description: Published in Phys. Lett. B Minor changes in v2 to match the published version
Σχολιασμένη μετάφραση από τα Αγγλικά στα Ελληνικά αποσπάσματων του κεφαλαίου «Eye Tracking in Audiovisual Translation Research» του Jan Louis Kruger από το βιβλίο The Routledge Handbook of Audiovisual Translation Studies, σε επιμέλεια του Luis Perez-Gonzalez
Creators: name: Δεληγιώργη, Ευαγγελία Πηνελόπη Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Οφθαλμική Ιχνηλάτηση
Οπτικοακουστική Μετάφραση
Σχολιασμένη Μετάφραση
Eye tracking
Audiovisual Translation
Annotated Translation

description: Η παρούσα διπλωματική εργασία αποτελεί σχολιασμένη μετάφραση από την αγγλική γλώσσα στην ελληνική αποσπασμάτων του κεφαλαίου «Eye tracking in audiovisual translation research» του Jan-Louis Kruger από το βιβλίο The Routledge Handbook of Audiovisual Translation σε επιμέλεια Luis Pérez-González. Το συγκεκριμένο κεφάλαιο αποτελεί μια επισκόπηση της χρήσης της μεθοδολογίας της οφθαλμικής ιχνηλάτησης (eye tracking) στην έρευνα στον τομέα της οπτικοακουστικής μετάφρασης και στη μελέτη των οπτικοακουστικών κειμένων. Αρχικά, στο πρώτο μέρος της εργασίας πραγματοποιείται μια σύντομη παρουσίαση του αντικειμένου της οφθαλμικής ιχνηλάτησης, η γλωσσική και κειμενική ανάλυση του κειμένου-πηγή και του κειμένου-στόχου, καθώς και αναγνώριση των επικοινωνιακών περιστάσεων. Έπειτα, παρατίθεται η μετάφραση των αποσπασμάτων κατ’ αντιστοιχία με το πρωτότυπο κείμενο και ακολουθεί το γλωσσάρι των όρων που εμφανίζονται σε αυτό. Στη συνέχεια, παρατίθεται ο πίνακας με την τεκμηρίωση των όρων στην αγγλική και ελληνική γλώσσα, ενώ ακολουθεί η ανάλυση της ορολογικής έρευνας και τεκμηρίωσης. Τέλος, στο τελευταίο μέρος της εργασίας αναλύονται τα μεταφραστικά προβλήματα και δυσκολίες που προέκυψαν κατά τη μεταφραστική διαδικασία και οι τεχνικές που επιλέχθηκαν για την αντιμετώπισή τους
description: The present thesis is an annotated translation from English to Greek of four extracts from the chapter entitled “Eye tracking in audiovisual translation research” by Jan-Louis Kruger, which is a part of the book The Routledge Handbook of Audiovisual Translation edited by Luis Pérez-González. The chapter outlines the basic principles of the use of eye tracking methodologies in the research of audiovisual texts. The first part of the thesis focuses on a brief presentation of this technology aς well as on the text and linguistic analysis of both the source and the target text and the identification of the communication circumstances. The original text is presented opposite to its translation, then follow the glossary and the terminology documentation as well as the analysis of the documentation process. The thesis concludes with the analysis of the translation problems and difficulties encountered during the translation process and how they were addressed
An intrinsic geometric formulation of Hyper-elasticity, pressure potential and non-holonomic constraints
Creators: name: Kolev, Boris
name: Desmorat, Rodrigue
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Isotropic hyper-elasticity, altogether with the equilibrium equation and the usual boundary conditions, are formulated directly on the body B, a three-dimensional compact and orientable manifold with boundary equipped with a mass measure. Pearson-Sewell-Beatty pressure potential is formulated in an intrinsic geometric manner. It is shown that Poincar{é}'s formula extended to infinite dimension, provides, in a straightforward manner, the optimal (non-holonomic) constraints for such a pressure potential to exist.