cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thiarubrine production in roots and root cultures of Ambrosia chamissonis
Creators: name: Ellis, Shona Margaret
Publisher: name: University of British Columbia
Year: 2008

description: Ambrosia chamissonis (Asteraceae) provides antibiotic sulphur heterocyclic polyynes known as thiarubrines and thiophenes. They occur in all parts of the plant, especially in the roots and can be visualized in hand sections. Methods were developed for their isolation, purification and quantification. Plants were collected from various locations in B.C. and found to have different thiarubrine profiles. A new thiarubrine (3-(1-propyny1)-6-(6-hydroxyhex-3-yn-1yny1)-1,2-dithiacyclohexadiene) and thiophene (2-(1-propyny1)-6-(6-hydroxyhex-3-yn-1yny1)-thiophene) were identified from roots and root cultures. Transgenic and non-transgenic root cultures were generated and shown to produce the same compounds as occur in natural roots. Quantitative chemical profiles of the cultured roots matched those of roots which had little secondary growth. Elicitation, with fungal preparations, did not enhance the over-all thiarubrine concentration, but the content of a more fungicidal thiarubrine was enhanced at the expense of a less active, but predominant thiarubrine. Administration of biosynthetic precursors did not have any effect on thiarubrine production. Antibiotic testing indicated that the thiarubrines are toxic against a number of fungi and, to a lesser degree, bacteria.
New interaction potentials for alkaline earth silicate and borate glasses
Creators: name: Shih, Yueh-Ting
name: Sundararaman, Siddharth
name: Ispas, Simona
name: Huang, Liping
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Structure and properties of magnesium silicate and borate melts and glasses were investigated by using newly parameterized interaction potentials in molecular dynamics simulations and compared with those of calcium silicate and borate. The competition between the depolymerization of the silica network and the formation of new bonds with modifier ions leads to the enhancement of the elastic moduli with increasing modifier content in alkaline earth silicate glasses. Compared with calcium silicate, the higher elastic moduli of magnesium silicate result from a higher connectivity of the overall glass network due to the incorporation of fourfold coordinated magnesium and a more rigid connection between SiO4 tetrahedra and modifier ions. In contrast to the silicates, the effect of modifier content on the elastic moduli of alkaline earth borates is dominated by the fraction of fourfold coordinated boron (N4). Calcium borate with higher N4 shows a more rigid network structure and higher elastic moduli.
Crowdfunding: μία σύγχρονη μορφή εναλλακτικής
Creators: name: Αντιάρτη, Ελένη Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εναλλακτική χρηματοδότηση
Επιχειρηματικότητα
Καινοτομία
Alternative funding
Entepreneurship
Innovation

description: Η παρούσα μελέτη αποσκοπεί στην ανάλυση του νέου επιχειρηματικού μοντέλου της συμμετοχικής χρηματοδότησης καθώς και στην κατανόηση των σύγχρονων εργαλείων που μπορεί να αξιοποιήσει κάποια επιχείρηση με σκοπό να ξεπεράσει το μεγάλο εμπόδιο της περιορισμένης χρηματοοικονομικής ρευστότητας. Το Crowdfunding αποτελεί μία από τις πιο ενδιαφέρουσες εξελίξεις των τελευταίων ετών στον χώρο των χρηματοδοτήσεων. Αρχικά, αναλύεται λεπτομερώς η έννοια του Crowdfunding, συγκεντρώνοντας τους βασικούς ορισμούς που έχουν διατυπωθεί. Γι αυτό το λόγο καταγράφηκαν οι σημαντικοί σταθμοί της γέννησης της ιδέα του Crowdfunding. Σε ένα δεύτερο στάδιο αναλύονται τα πλεονεκτήματα, τα μειονεκτήματα καθώς και οι κίνδυνοι του φαινομένου αυτού. Σε επόμενο στάδιο αναλύονται τα διαφοροποιημένα μοντέλα συμμετοχικής χρηματοδότησης με οικονομική ανταμοιβή ή όχι καθώς και το νομικό πλαίσιο τους, τα μεγέθη και η σύνθεση των χρηματοδοτήσεων μέσω Crowdfunding σε Ευρωπαϊκό και Παγκόσμιο επίπεδο, καθώς και η δυναμική για περαιτέρω ανάπτυξή του. Σε μεταγενέστερο στάδιο, παρατίθεται μία σύντομη εισαγωγή για το Crowdfunding στην Ελλάδα και παρουσιάστηκαν συνοπτικά οι ελληνικές πλατφόρμες. Στο τελευταίο μέρος της ανάλυσής μας πραγματοποιούμαι ως μελέτη περίπτωσης το Pebble smartwatch της διεθνούς πλατφόρμας kickstarter.
description: The present study aims to analyze the new business model of equity financing as well as to understand the modern tools that a company can use in order to overcome the insurmountable barrier of limited financial liquidity. Crowdfunding is one of the most interesting developments in recent years in the field of financing. First, the concept of crowdfunding is analyzed in detail, summarizing the basic definitions that have been formulated. For this reason, the important birth stages of the idea of crowdfunding were recorded. In a second stage, the advantages, disadvantages and risks of this phenomenon are analyzed. In the next stage, the differentiated models of participatory financing with financial reward or not are analyzed as well as their legal framework, the size and composition of financing through crowdfunding at European and Global level, as well as the dynamics for its further development. At a later stage, a brief introduction to crowdfunding in Greece is given and the Greek platforms are briefly presented. In the last part of our analysis, the Pebble smartwatch of the international kickstarter platform is carried out as a case study.
Ανοιχτά Διασυνδεδεμένα Δεδομένα και Μουσικές Βιβλιοθήκες
Creators: name: Βασιλειάδου, Στυλιανή Στυλιανού
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ανοιχτά ΔίππυνδεδεμΛνα Λεδομίνα
Σημασιολογικός Ιστός
Μουσική Οντολογία
Open Linked Data
Semantic Web
Music Ontology

description: Πιο συγκεκριμένα, αναφέρονται θεωρητικά στοιχεία για τα Ανοιχτά Διασυνδεδεμένα Δεδομένα, για την πορεία τους στο χρόνο καθώς και τεχνολογίες που αναπτύχθηκαν και χρησιμοποιούνται για αυτόν τον σκοπό. Στην συνέχεια, αναλύονται γενικά στοιχεία για τις οντολογίες όπως και εδικά στοιχεία για την Μουσική Οντολογία και τις οντολογίες που έχουν αναπτυχθεί για την καλύτερη αντιμετώπιση αυτών των δεδομένων. Και τέλος, αναλύεται η έννοια του Σημασιολογικού Ιστού, οι υπηρεσίες του καθώς και οι οντολογικές γλώσσες που έχουν αναπτυχθεί για να βοηθήσουν στην αντισυμβατική δουλειά των πρακτόρων. Τέλος, θα ήθελα να ευχαριστήσω τον κ. Βασιλειάδη Νικόλαο για την καθοδήγησή του και την αμέριστη βοήθειά του κατά την διάρκεια της εκπόνησης της διπλωματικής μου εργασίας. Θα ήθελα επίσης να εκφράσω τις ευχαριστίες μου στην οικογένεια μου για τη συνεχή στήριξη, που χωρίς αυτούς η ολοκλήρωση αυτής της εργασίας δεν θα ήταν δυνατή.
description: The object of this work is the investigation of three important areas of the IT sector such as Linked Open Data, Ontologies and the Semantic Web but also their contribution to the development of access to music production and performance. Specific areas of Linked Open Data in music are examined as well as specific ontologies and systems that have been developed for this purpose. More specifically, provides theoretical data on Linked Open Data, its course over time as well as technologies developed and used for this purpose. Subsequently, provides general information about the ontologies as well as specific information about the Music Ontology and the ontologies developed to better address this data. And in the end, the concept of the Semantic Web, its services as well as the ontological languages that have been developed to assist in the unconventional work of agents. Finally, I would like to thank Mr. Vasiliadis Nikolaos for his guidance and his unwavering assistance during the elaboration of my dissertation. I would also like to thank my family for their continued support, without whom this work would not have been possible.
Global Solutions for the One-Dimensional Vlasov-Maxwell System for Laser-Plasma Interaction
Creators: name: Carrillo, José A.
name: Labrunie, Simon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A05, 35B35, 82D10

description: We analyse a reduced 1D Vlasov--Maxwell system introduced recently in the physical literature for studying laser-plasma interaction. This system can be seen as a standard Vlasov equation in which the field is split in two terms: an electrostatic field obtained from Poisson's equation and a vector potential term satisfying a nonlinear wave equation. Both nonlinearities in the Poisson and wave equations are due to the coupling with the Vlasov equation through the charge density. We show global existence of weak solutions in the non-relativistic case, and global existence of characteristic solutions in the quasi-relativistic case. Moreover, these solutions are uniquely characterised as fixed points of a certain operator. We also find a global energy functional for the system allowing us to obtain $L^p$-nonlinear stability of some particular equilibria in the periodic setting.
МАТЕМАТИЧЕСКИЕ И АЛГОРИТМИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ ПРИЗНАКОВ ВОЗНИКНОВЕНИЯ ОСЛОЖНЕНИЙ ПРИ ПЕРИТОНИТЕ
Creators: name: Барулина М.А.
name: Масляко В.В.
name: Полиданов М.А.
name: Романов Р.А.
name: Волков К.А.
Publisher: name: Математическое моделирование, компьютерный и натурный эксперимент в естественных науках
Year: 2023
Subjects: перитонит
диагностика
ранее выявление осложнений
прогнозирование осложнений
математические и алгоритмические методы исследования
методы искусственного интеллекта
нейронные сети

description: Перитонит остаётся одной из актуальных хирургических, общеклинических и общепатологических проблем в силу стабильно высокой летальности. Целью данной работы было определение признаков возникновения осложнений при перитоните на раннем этапе классическими статистическими методами и методами искусственного интеллекта на основе исследования результатов анализов, взятых у пациентов при поступлении с диагнозом перитонит. Исследование было проведено классическими статистическими методами и моделями глубокого обучения искусственного интеллекта. Было выяснено, что важность параметры, определяемая алгоритмами глубокого обучения и статистическими методами отличаются, что можно объяснить способностью алгоритмов искусственного интеллекта улавливать внутренние неявные связи между данными. При дальнейшей работе с данными и обучении предиктивных моделей видится целесообразным использовать именно методы искусственного интеллекта для отбора важных параметров.
FPGA Implementation of a high-speed frame buffer for Smartglasses
Creators: name: Μπλάντος, Κωνσταντίνος Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Υλοποίηση σε FPGA(Field Programmable Gate Array)
Έξυπνα γυαλιά
Ψηφιακά Κυκλώματα
FPGA(Field Programmable Gate Array) Implementation
Smartglasses
Digital Circuits

description: The aim of the present thesis, is about the implementation of the top-level frame buffer that the whole system utilize and its sub-modules that gives to the operator the permission to write and read in parallel more than one frame at the time. These modules are developed to collect and process the incoming pixel data from the visor video-cameras and transfer it into an external memory by using the Xilinx full AXI-bus. In addition, a control unit was developed to control the entire process execution and data flow.
description: Σκοπός της διατριβής ήταν η εφαρμογή του frame buffer που χρησιμοποιεί ένα σύστημα επεξεργασίας εικόνας το οποίο, μέσα από τις υπομονάδες του , δίνει στον χειριστή την άδεια να γράφει και να διαβάζει παράλληλα περισσότερα από ένα πλαίσια εικόνας την φορά . Αυτές οι λειτουργικές μονάδες έχουν αναπτυχθεί ώστε να συλλέγουν και να επεξεργάζονται τα δεδομένα των εισερχόμενων εικονοστοιχείων από τους οπτικούς αισθητήρες κάμερας και να τα μεταφέρουν στην εξωτερική μνήμη χρησιμοποιώντας το full AXI-bus που παρέχει η Xilinx. Προκειμένου να ελεγχθεί η εκτέλεση της διαδικασίας και η ροή των δεδομένων αναπτύχθηκε μια επιπλέον μονάδα ελέγχου.
Additional file 2: of Panicle Morphology Mutant 1 (PMM1) determines the inflorescence architecture of rice by controlling brassinosteroid biosynthesis
Creators: name: Li, Yan
name: Li, Xuemei
name: Fu, Debao
name: Wu, Changyin
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Table S2. Predicted genes in the region containing PMM1. (DOCX 17 kb)
ПРОБЛЕМЫ АВТОМАТИЧЕСКОГО СБОРА ДИАГНОСТИЧЕСКИХ ДАННЫХ О ПЕРСОНАЛЬНОМ КОМПЬЮТЕРЕ
Creators: name: Баланов И.А.
name: Кондратов Д.В.
Publisher: name: Математическое моделирование, компьютерный и натурный эксперимент в естественных науках
Year: 2023
Subjects: мониторинг
диагностические данные
S.M.A.R.T.

description: В современном мире персональный компьютер уже стал обыденностью, его используют для развлечения, работы, хранения информации. Потеря информации или простой в работе из-за поломки может привести к потере денег и, что не менее важно, ценных воспоминаний. Чтобы минимизировать потери или избежать их вовсе необходимо регулярно проводить диагностику, чтобы понять какие компоненты нуждаются в замене. В статье описаны проблемы различного ПО, которое позволяет собирать диагностические данные о персональном компьютере.
A Many-Body Density Energy Functional
Creators: name: Kievsky, A.
name: Orlandini, G.
name: Gattobigio, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The Hohenberg-Kohn theorem and the Kohn-Sham equations, which are at the basis of the Density Functional Theory, are reformulated in terms of a particular many-body density, which is translational invariant and therefore is relevant for self-bound systems. In a similar way that there is a unique relation between the one-body density and the external potential that gives rise to it, we demonstrate that there is a unique relation between that particular many-body density and a definite many-body potential. The energy is then a functional of this density and its minimization leads to the ground-state energy of the system. As a proof of principle, the analogous of the Kohn-Sham equation is solved in the specific case of $^4$He atomic clusters, to put in evidence the advantages of this new formulation in terms of physical insights.
description: 7 pages and 2 figures
Velocity Shear of the Thick Disk from SPM3 Proper Motions at the South Galactic Pole
Creators: name: Girard, T. M.
name: Korchagin, V. I.
name: Casetti-Dinescu, D. I.
name: van Altena, W. F.
name: Lopez, C. E.
name: Monet, D. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The kinematical properties of the Galactic Thick Disk are studied using absolute proper motions from the SPM3 Catalog and 2MASS near-infrared photometry for a sample of ~1200 red giants in the direction of the South Galactic Pole. The photometrically-selected sample is dominated by Thick Disk stars, as indicated by the number-density distribution that varies with distance from the Galactic plane as a single-valued exponential over the range 1
description: 38 pages, 9 figures, accepted for publication in AJ
SPAN: a Simple Predict & Align Network for Handwritten Paragraph Recognition
Creators: name: Coquenet, Denis
name: Chatelain, Clément
name: Paquet, Thierry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Unconstrained handwriting recognition is an essential task in document analysis. It is usually carried out in two steps. First, the document is segmented into text lines. Second, an Optical Character Recognition model is applied on these line images. We propose the Simple Predict & Align Network: an end-to-end recurrence-free Fully Convolutional Network performing OCR at paragraph level without any prior segmentation stage. The framework is as simple as the one used for the recognition of isolated lines and we achieve competitive results on three popular datasets: RIMES, IAM and READ 2016. The proposed model does not require any dataset adaptation, it can be trained from scratch, without segmentation labels, and it does not require line breaks in the transcription labels. Our code and trained model weights are available at https://github.com/FactoDeepLearning/SPAN.
Additional file 4: of Panicle Morphology Mutant 1 (PMM1) determines the inflorescence architecture of rice by controlling brassinosteroid biosynthesis
Creators: name: Li, Yan
name: Li, Xuemei
name: Fu, Debao
name: Wu, Changyin
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Figure S2. Phenotype comparison of lamina joint inclination and plant height between the wild type (WT) and pmm1–1 plants. (a) A close-up view of flag leaf angles of the WT and pmm1–1 plants. (b) A close-up view of the secondary leaf angles the WT and pmm1–1 plants. (c) Measurements of flag leaf angles of the WT and pmm1–1 plants. (d) Measurements of the secondary leaf angles of WT and pmm1–1 plants. (e) The panicle and culm of the WT (left) and pmm1–1 (right). (f) The internodes and panicle of the WT (left) and pmm1–1 (right). (g) Measurements of the length between the WT and pmm1–1 plants. (h) The expression levels of genes associated with lamina joint inclination. (i) The expression levels of BR-related genes associated with internode elongation. Rice UBIQIUTIN5 was used as an internal control. Data are presented as means ± SE (n = 3). Significant at **P < 0.01. (DOCX 5072 kb)
Η σύμβαση ανέγερσης οικοδομής με το σύστημα της «αντιπαροχής»
Creators: name: Πουρνάρα, Αργυρή Μαργαρίτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: subject: Σύμβαση
subject: Οικοδομή
subject: Σύστημα αντιπαροχής
subject: Contract
subject: Building
subject: FOS: Civil engineering
subject: System of compensation

description: Σκοπός της παρούσας διπλωματικής εργασίας ήταν η μελέτη της σύμβασης ανέγερσης οικοδομής με το σύστημα της αντιπαροχής. Σύμφωνα με τη συναλλακτική πρακτική, ο κύριος του οικοπέδου, οικοπεδούχος, αναθέτει στον κατασκευαστή οικοδομών - εργολάβο, με ευθύνη και δαπάνες του τελευταίου, την ανέγερση οικοδομής στο οικόπεδό του. Ως αντάλλαγμα του εργολάβου συμφωνείται η μεταβίβαση σ’ αυτόν ή σε τρίτους που εκείνος θα υποδείξει, ποσοστών εξ αδιαιρέτου της κυριότητας του οικοπέδου μαζί με τα διαμερίσματα που αντιστοιχούν στα ποσοστά αυτά. Η μελέτη επικεντρώθηκε στη νομική φύση της σύμβασης και στις πολύπλοκες σχέσεις που δημιουργούνται στις συμβάσεις αυτές (κατά κανόνα τριμερείς), καθώς και στην πληρέστερη ανάλυση και αντιμετώπιση των ζητημάτων που ανακύπτουν σε περιπτώσεις ανώμαλης εξέλιξης της σύμβασης, ειδικά μετά την εμπλοκή και τρίτου μέρους.
description: The purpose of this thesis was to study the building construction contract with the system of compensation. According to transactional practice, the owner of the land assigns to the contractor to construct a building on his land, on the latter’s responsibility and expenses. Ιn exchange for the building construction, it is agreed that the land owner will transfer to the contractor, or third parties indicated by him, the ownership of undivided land percentages, along with the apartments that correspond to them. The study was focused on the legal nature of this type of legal agreement and the complex legal relations created because of this contract (usually between three parties), including a more complete analysis and addressing of the issues arising, in case of the abnormal development of the contract, especially after a third party becomes involved.
Integral-free Wigner functions
Creators: name: Tegmen, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Wigner phase space quasi-probability distribution function is a Fourier transform related to a given quantum mechanical wave function. It is shown that for the wave functions of type $ψ(q)=e^{-aq^2}ϕ(q)$, the Wigner function can be defined in terms of differential operators acting on a given function, independently from the integral formula which appears in the standard definition. Gaussian wave packet, harmonic and singular oscillators are given as the examples.
description: 5 pages, no figures, to appear in "Il Nuovo Cimento B"
Additional file 3: of A spatiotemporal meta-analysis of HIV/syphilis epidemic among men who have sex with men living in mainland China
Creators: name: Fu, Rong
name: Zhao, Jinkou
name: Wu, Dan
name: Zhang, Xiayan
name: Tucker, Joseph
name: Zhang, Meiwen
name: Tang, Weiming
Publisher: name: figshare
Year: 2018
Subjects: subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Meta-analyses of HIV and syphilis prevalence among MSM, stratified by 6 geographical regions. The meta-analyses present prevalence rates in forest plots, fixed effect model and random effects model. (PDF 1622 kb)
Electromagnetic response and pseudo-zero-mode Landau levels of bilayer graphene in a magnetic field
Creators: name: Misumi, T.
name: Shizuya, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electromagnetic response of bilayer graphene in a magnetic field is studied in comparison with that of monolayer graphene. Both types of graphene turn out to be qualitatively quite similar in dielectric and screening characteristics, especially those deriving from vacuum fluctuations, but the effect is generally much more sizable for bilayers. The presence of the zero-(energy-)mode Landau levels is a feature specific to graphene. In bilayers, unlike in monolayers, the effect of the zero-mode levels becomes visible and even dominant in density response as an externally-controllable band gap develops. It is pointed out that the splitting of nearly-degenerate pseudo-zero-mode levels at each valley, specific to bilayer graphene, is controlled by an applied inplane electric field or by an injected current. In addition, a low-energy effective gauge theory of bilayer graphene is constructed.
description: 9 pages, 4 figures, revtex; corrected typos, to appear in PRB
Current-phase relation in layered superconducting structures of SIS'IS type
Creators: name: Shutovskyi, A. M.
name: Sakhnyuk, V. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The dependence of the current density on the phase difference is investigated considering the layered superconducting structures of a SIS'IS type. To simplify the calculations, the quasiclassical equations for the Green's functions in a \textit{t}-representation are derived. An order parameter is considered as a piecewise constant function. To consider the general case, no restrictions on the dielectric layer transparency and the thickness of the intermediate layer are imposed. It was found that a new analytical expression for the current-phase relation can be used with the aim to obtain a number of previously known results arising in particular cases.
description: 14 pages, 3 figures
Nonlinear k_t factorisation: recent progress and perspectives
Creators: name: Schäfer, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hard scattering in a strongly absorptive regime requires a novel nonlinear k_t -- factorization. Here we discuss two recent developments: firstly the evaluation of radiative corrections to single particle spectra, and secondly an extension of the formalism to address topological cross sections and unitarity cutting rules.
description: 10 pages, 2 figs, talk given at Diffraction 2006, International Workshop on Diffraction in High-Energy Physics September 5-10, 2006, Adamantas, Milos island, Greece
Optically reconfigurable quantum spin-valley Hall effect of light in coupled nonlinear ring resonator lattice
Creators: name: Yang, Haofan
name: Xu, Jing
name: Xiong, Zhongfei
name: Lu, Xinda
name: Zhang, Ruo-Yang
name: Chen, Yuntian
name: Zhang, Shuang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Scattering immune propagation of light in topological photonic systems may revolutionarize the design of integrated photonic circuits for information processing and communications. In optics, various photonic topological circuits have been developed, which were based on classical emulation of either quantum spin Hall effect or quantum valley Hall effect. On the other hand, the combination of both the valley and spin degrees of freedom can lead to a new kind of topological transport phenomenon, dubbed quantum spin valley Hall effect (QSVH), which can further expand the number of topologically protected edge channels and would be useful for information multiplexing. However, it is challenging to realize QSVH in most known material platforms, due to the requirement of breaking both the (pseudo-)fermionic time-reversal (T) and parity symmetries (P) individually, but leaving the combined symmetry S=TP intact. Here, we propose an experimentally feasible platform to realize QSVH for light, based on coupled ring resonators mediated by optical Kerr nonlinearity. Thanks to the inherent flexibility of cross-mode modulation (XMM), the coupling between the probe light can be engineered in a controllable way such that spin-dependent staggered sublattice potential emerges in the effective Hamiltonian. With delicate yet experimentally feasible pump conditions, we show the existence of spin valley Hall induced topological edge states. We further demonstrate that both degrees of freedom, i.e., spin and valley, can be manipulated simultaneously in a reconfigurable manner to realize spin-valley photonics, doubling the degrees of freedom for enhancing the information capacity in optical communication systems.
Additional file 4: of A spatiotemporal meta-analysis of HIV/syphilis epidemic among men who have sex with men living in mainland China
Creators: name: Fu, Rong
name: Zhao, Jinkou
name: Wu, Dan
name: Zhang, Xiayan
name: Tucker, Joseph
name: Zhang, Meiwen
name: Tang, Weiming
Publisher: name: figshare
Year: 2018
Subjects: Medicine
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy

description: Temporal trends of estimated syphilis prevalence nationwide and in 6 geographical regions. The trends were estimated based on data from 2001-2015 independent studies. (PDF 279 kb)
Admissibility and minimaxity of generalized Bayes estimators for spherically symmetric family
Creators: name: Maruyama, Yuzo
name: Takemura, Akimichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62C15; 62C20

description: We give a sufficient condition for admissibility of generalized Bayes estimators of the location vector of spherically symmetric distribution under squared error loss. Compared to the known results for the multivariate normal case, our sufficient condition is very tight and is close to being a necessary condition. In particular we establish the admissibility of generalized Bayes estimators with respect to the harmonic prior and priors with slightly heavier tail than the harmonic prior. We use the theory of regularly varying functions to construct a sequence of smooth proper priors approaching an improper prior fast enough for establishing the admissibility. We also discuss conditions of minimaxity of the generalized Bayes estimator with respect to the harmonic prior.
description: 25pages
Les Modèles explicatifs de la responsabilité sociale de l'entreprise
Creators: name: Houcine SABIR
name: Mohamed ZAKRAOUI
Publisher: name: Zenodo
Year: 2024

description: Le concept de la RSE a commencé à attirer l’attention des chercheurs et des praticiens en management au cours des vingt dernières années. Dans ce sens plusieurs modèles ont été développés Carroll (1979), Watrick et Cochran (1985), Wood (1991), Donaldson et Preston (1995) et Mitchell, Agle et Wood (1997), en vue d’illustrer la diversité des approches de la RSE, soulignant l'importance croissante pour les entreprises d'adopter des pratiques durables et socialement responsables pour répondre aux attentes de la société et contribuer positivement au développement durable. Ce travail de recherche, tente d’explorer les différents modèles proposés par les auteurs et les académiciens, à travers une analyse les divergences et les ressemblances dans la manière de percevoir ce construit.
Operational code beliefs of Ronald Reagan: the nature of the international environment and image of the Soviet Union
Creators: name: Edgar, Tracey
Publisher: name: University of British Columbia
Year: 2008

description: In 1981, the Reagan administration came to the White House emphasizing the moral and political differences between the Soviet Union and the United States. The conflict between the two countries was likened to one between right and wrong, good and evil. Yet, by the end of his second term in office, Reagan was hailing a new era in Soviet-American relations. The possibility of a lasting peace between once implacable foes was pronounced. The questions which form the framework for this thesis arise from this dramatic shift in the Reagan administration rhetoric regarding the Soviet Union. The thesis focuses on the political beliefs of Reagan. The purpose is to gain some insight into the role a political actor's beliefs about politics - the operational code - in international relations. Specifically, this paper uses qualitative content analysis to examine Ronald Reagan's operational code during both terms in office and look for evidence of modified or discarded beliefs which may reflect the changing international situation and the altered character of the Soviet Union. General conclusions drawn from the study indicate that Reagan's operational code did not undergo any major modifications in response to the new situation in the Soviet Union. However, liberal, optimistic elements of his operational code became more dominant in the second term. It appears that some political leaders resist change in their belief systems - even in the face of strong, contradictory evidence.
Οι έφηβοι, το διαδίκτυο και τα προσωπικά δεδομένα
Creators: name: Μακρή, Αναστασία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Προσωπικά δεδομένα
Ανήλικοι
Διαδίκτυο
Personal data
Minors
Internet

description: Στην παρούσα διπλωματική εργασία γίνεται μια προσπάθεια ανάλυσης των προσωπικών δεδομένων των ανηλίκων και των κινδύνων που εγκυμονούν με την έκθεση τους στο χώρο του διαδικτύου. Διευκρινίζεται οποιαδήποτε ορολογία αφορά στα προσωπικά δεδομένα και την επεξεργασία τους και αναλύεται η νομοθεσία και οι κανονισμοί που βρίσκονται σε ισχύ στη χώρα. Επιπλέον, αναφέρονται οι πολιτικές απορρήτου και ο τρόπος συλλογής των προσωπικών δεδομένων από διάφορες διαδικτυακές πλατφόρμες, οι οποίες έχουν ιδιαίτερη απήχηση σε ανήλικους, αλλά και τα κενά ασφαλείας που υπάρχουν σε αυτές. Ακόμη, γίνεται μια αρκετά εκτενής αναφορά στη συλλογή προσωπικών δεδομένων στην εκπαίδευση και την τοποθέτηση καμερών στις σχολικές αίθουσες, αλλά και τη χρήση της πλατφόρμας My School, γεγονός πιο επίκαιρο από ποτέ εν όψει της κατάστασης που επικρατεί σήμερα. Τέλος, με την μορφή ερωτηματολογίου διεξήχθη έρευνα σε ανήλικους ώστε να μελετηθεί κατά πόσο είναι ενημερωμένοι για τα προσωπικά τους δεδομένα που παραχωρούν στους διαδικτυακούς ιστοτόπους.
description: In this dissertation, an attempt is made to analyze the personal data of minors and the dangers that arise with their exposure to the internet. Any terminology related to personal data and their processing is clarified and the laws and regulations in force in the country are analyzed. In addition, the privacy policies and the way of collecting personal data from various online platforms, which are particularly popular with minors are mentioned, and the security gaps that exist in them are mentioned as well. Furthermore, there is a fairly extensive report on the collection of personal data in education and the installation of cameras in classrooms, but also the use of the My School platform, a fact that is more relevant than ever in view of the current situation. Finally, in the form of a claim book, techniques were introduced that are needed to study during the required for the kids who have the data that provide the information required on the internet
Έμμετρες σύγχρονες αφηγήσεις για παιδιά: χαρακτηριστικά, λειτουργίες, θεματικές
Creators: name: Δεληγεώργη, Τριανταφυλλιά Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Έμμετρες αφηγήσεις για παιδιά
Έμμετρα παραμύθια
Παιδική μικροαφήγηση
Children’ s rhythmic narratives
Rhythmic fairy-tales
Children’ s short stories

description: Οι έμμετρες αφηγήσεις για παιδιά, που αποτελούν ένα είδος ποιητικού λόγου με χαρακτηριστικά ωστόσο και από το χώρο της παιδικής μικροαφήγησης, ελάχιστα έχουν απασχολήσει τη φιλολογική έρευνα. Μέσω της φιλολογικής ανάλυσης, εστιασμένης στη συνεξέταση μορφής και περιεχομένου, επιλεγμένων και ορισμένων έργων από το χρονικό φάσμα της τελευταίας εικοσαετίας, αποσκοπούμε να αναδειχθεί το δισυπόστατο της φύσης τους και να εντοπισθούν τα ιδιαίτερα χαρακτηριστικά τους αλλά και οι εξελίξεις που ενδεχομένως αυτά παρουσιάζουν με απώτερο στόχο τον ειδολογικό τους προσδιορισμό. Προς επίτευξιν αυτού, συγκεντρώθηκε ένα σώμα 36 τίτλων, Ελλήνων κυρίως δημιουργών, το σύνολο των οποίων μελετήθηκε, αναλύθηκε δε ένα αντιπροσωπευτικό δείγμα 16 εξ αυτών. Για τη θεωρητική πλαισίωση ωστόσο της έρευνας κρίθηκε απαραίτητο να εξετασθεί νωρίτερα η πορεία, οι εξελίξεις αλλά και η λειτουργία τόσο της παιδικής ποιήσεως όσο και της παιδικής μικροαφήγησης και δη του παραμυθιού, λαϊκού και έντεχνου, και των μικρών ιστοριών, στοιχεία των οποίων χαρακτηρίζουν και το αντικείμενο μελέτης μας λόγω της διττής του φύσης.
description: Minimum literary research has been made so far on children’s rhythmic narratives which constitute a kind of poetic discourse with characteristics taken also from the field of short story for children. Through literary analysis of certain works selected within the last twenty-year time frame, which focuses on examining both the form and the content, we aim to highlight the dual nature of rhythmic narratives, track down their particular characteristics as well as the evolution they have likely undergone with an ultimate purpose to define them as far as the genre is concerned. To achieve this, a body of 36 titles of mainly Greek authors was collected, all of which were studied, while a representative sample of 16 of them was analyzed. For the theoretical framing of the research, however, it was deemed necessary to earlier examine the course, evolution and function of both children's poetry and children's short story; in particular of the fairy tales, folk and arty, and of the short stories, elements of which also characterize, due to its dual nature, the object of our study.
On the harmonic Boltzmannian waves in laser-plasma interaction
Creators: name: Bostan, Mihai
name: Labrunie, Simon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 52.35.Mw; 52.38.-r; 52.27.Aj; 02.30.Xx

description: We study the permanent regimes of the reduced Vlasov-Maxwell system for laser-plasma interaction. A non-relativistic and two different relativistic models are investigated. We prove the existence of solutions where the distribution function is Boltzmannian and the electromagnetic variables are time-harmonic and circularly polarized.
On the role of abnormal minimizers in sub-Riemannian geometry
Creators: name: Bonnard, Bernard
name: Trélat, Emmanuel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Consider a sub-Riemannian geometry $(U,D,g)$ where $U$ is a neighborhood at 0 in $\R^n,$ $D$ is a rank-2 smooth $(C^\infty $ or $C^ω)$ distribution and $g$ is a smooth metric on $D$. The objective of this article is to explain the role of abnormal minimizers in SR-geometry. It is based on the analysis of the Martinet SR-geometry.
Additional file 2: of Differences between the perspectives of physicians and patients on the potential barriers to optimal diabetes control in China: a multicenter study
Creators: name: Liu, Chun
name: Xu, Shaoyong
name: Ming, Jie
name: Jia, Aihua
name: Wei, Yingji
name: Li, Hui
name: Jiao, Yang
name: Song, Mingxi
name: Zhao, Yadong
name: Du, Yafang
name: Yang, Wenjuan
name: Lu, Xiaoqiang
name: Shi, Shengqi
name: Tong, Hui
name: Jia, Guangtang
name: Zhao, Guohua
name: Wang, Li
name: Zhang, Mei
name: Wang, Junlin
name: Liu, Wenshu
name: Fang, Lin
name: Dong, Fuhong
name: Ji, Qiuhe
Publisher: name: figshare
Year: 2018
Subjects: Cell Biology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Developmental Biology
Science Policy

description: Survey of patientsâ perspectives for diabetes dangers. (DOCX 28 kb)
BLE Beacons in the Smart City: Applications, Challenges, and Research Opportunities
Creators: name: Spachos, Petros
name: Plataniotis, Konstantinos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The Internet of Things helps to have every individual interconnected with their surroundings and to interact with them through smart devices. In recent years, Bluetooth Low Energy (BLE) technology has become very popular in smart infrastructures, the medical field, the retail industry, and many more areas due to its availability in a plethora of wireless devices. BLE is widely used in IoT devices, such as smartphones, smart watches, and BLE beacons. Beacons are small, low-cost, and low-power wireless transmitters that bring attention to their location by broadcasting a signal with a unique identifier at regular intervals. BLE beacons are a promising solution for many smart city applications, from proximity marketing to indoor navigation. However, they do pose security and privacy challenges. This work discusses the characteristics of BLE beacons, the applications that can benefit from them, and the challenges they pose while trying to identify research opportunities and future directions.
Replacing competition with cooperation to achieve scalable lock-free FIFO queues
Creators: name: Henzinger, Thomas
name: Payer, Hannes
name: Sezgin, Ali
Publisher: name: IST Austria
Year: 2013
Subjects: 000 Computer science, knowledge & general works

description: In order to guarantee that each method of a data structure updates the logical state exactly once, al-most all non-blocking implementations employ Compare-And-Swap (CAS) based synchronization. For FIFO queue implementations this translates into concurrent enqueue or dequeue methods competing among themselves to update the same variable, the tail or the head, respectively, leading to high contention and poor scalability. Recent non-blocking queue implementations try to alleviate high contentionby increasing the number of contention points, all the while using CAS-based synchronization. Furthermore, obtaining a wait-free implementation with competition is achieved by additional synchronization which leads to further degradation of performance.In this paper we formalize the notion of competitiveness of a synchronizing statement which can beused as a measure for the scalability of concurrent implementations. We present a new queue implementation, the Speculative Pairing (SP) queue, which, as we show, decreases competitiveness by using Fetch-And-Increment (FAI) instead of CAS. We prove that the SP queue is linearizable and lock-free.We also show that replacing CAS with FAI leads to wait-freedom for dequeue methods without an adverse effect on performance. In fact, our experiments suggest that the SP queue can perform and scale better than the state-of-the-art queue implementations.
An improved model for the formation times of dark matter haloes
Creators: name: Giocoli, Carlo
name: Moreno, Jorge
name: Sheth, Ravi K.
name: Tormen, Giuseppe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A dark matter halo is said to have formed when at least half its mass hass been assembled into a single progenitor. With this definition, it is possible to derive a simple but useful analytic estimate of the distribution of halo formation times. The standard estimate of this distribution depends on the shape of the conditional mass function--the distribution of progenitor masses of a halo as a function of time. If the spherical collapse model is used to estimate the progenitor mass function, then the formation times one infers systematically underestimate those seen in numerical simulations of hierarchical gravitational clustering. We provide estimates of halo formation which may be related to an ellipsoidal collapse model. These estimates provide a substantially better description of the simulations. We also provide an alternative derivation of the formation time distribution which is based on the assumption that haloes increase their mass through binary mergers only. Our results are useful for models which relate halo structure to halo formation.
description: 8 pages, 5 figures. Replaced to match version accepted for publication in MNRAS
Gaussian decomposition of HI surveys. III. Local HI
Creators: name: Haud, Urmas
name: Kalberla, Peter M. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: To investigate the properties of the 21-cm radio-lines of galactic neutral hydrogen, the profiles of "The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI" are decomposed into Gaussian components. Aims: The width distribution of the obtained components is analysed and compared with similar studies by other authors. Methods: The study is based on an automatic profile decomposition algorithm. As the Gaussians obtained for the complex HI profiles near the galactic plane cannot be directly interpreted in terms of the properties of gas clouds, we mainly study the selected simplest profiles in a limited velocity range. The selection criteria are described and their influence on the results discussed. Results: Considering only the simplest HI profiles, we demonstrate that for Gaussians with relatively small LSR velocities (-9 <= V_C <= 4 km/s) it is possible to distinguish three or four groups of preferred line-widths with mean widths FWHM = 3.9 +- 0.6, 11.8 +- 0.5, 24.1 +- 0.6, and 42 +- 5 km/s. Verschuur previously proposed similar line-width regimes, but with somewhat larger widths. He used a human-assisted decomposition for a nearly 50 times smaller database and we discuss systematic differences in analysis and results. Conclusions: The line-widths of about 3.9 and 24.1 km/s are well understood in the framework of traditional models of the two-phase interstellar medium. The components with the widths around 11.8 km/s indicate that a considerable fraction (up to about 40%) of the HI gas is thermally unstable. The reality and the origin of the broad lines with the widths of about 42 km/s is more obscure. These, however, contain only about 4% of the total observed column densities.
description: 10 pages, 5 figures. Accepted for publication in A&A. High-resolution version available at http://www.aai.ee/~urmas/ast/Local.pdf (5.71 MBaits)
Baryon charge transfer and production asymmetry between Lambda^0 and antiLambda^0 in hadron interactions
Creators: name: Piskounova, O. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The predictions were done for asymmetry between production spectra of Lambda^0 and antiLambda^0 at the energy of LHC experiments. The value of A(s) should be situated in the band between two curves that are calculated in Quark-Gluon String Model with two possible values of intercept alpha_{SJ}(0)=0,5 and 0,9. Both curves describe the asymmetries measured at lower energies up to RHIC experiments. The data of H1 experiment can be fitted only with alpha_{SJ}(0)=0,9.
description: LateX, 7 pages and 2 figures, poster presentation at PANIC'05, Santa Fe, October 2005
Spectral Evolution of an Earth-Like Planet
Creators: name: Kaltenegger, L.
name: Traub, W. A.
name: Jucks, K. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have developed a characterization of the geological evolution of the Earths atmosphere and surface in order to model the observable spectra of an Earth-like planet through its geological history. These calculations are designed to guide the interpretation of an observed spectrum of such a planet by future instruments that will characterize exoplanets. Our models focus on spectral features that either imply habitability or are required for habitability. These features are generated by H2O, CO2, CH4, O2, O3, N2O, and vegetation-like surface albedos. We chose six geological epochs to characterize. These epochs exhibit a wide range in abundance for these molecules, ranging from a CO2 rich early atmosphere, to a CO2/CH4-rich atmosphere around 2 billion years ago to a present-day atmosphere. We analyzed the spectra to quantify the strength of each important spectral feature in both the visible and thermal infrared spectral regions, and the resolutions required to unambiguously observe the features for each epoch. We find a wide range of spectral resolutions required for observing the different features. For example, H2O and O3 can be observed with relatively low resolution, while O2 and N2O require higher resolution. We also find that the inclusion of clouds in our models significantly affects both the strengths and resolutions required to observe all spectral features.
description: 34 pages, 24 fig, pdf, ApJ, TBP
Quantum localized modes in capacitively coupled Josephson junctions
Creators: name: Pinto, R. A.
name: Flach, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the quantum dynamics of excitations in a system of two capacitively coupled Josephson junctions. Quantum breather states are found in the middle of the energy spectrum of the confined nonescaping states of the system. They are characterized by a strong excitation of one junction. These states perform slow tunneling motion from one junction to the other, while keeping their coherent nature. The tunneling time sensitively depends on the initial excitation energy. By using an external bias as a control parameter, the tunneling time can be varied with respect to the escape time and the experimentally limited coherence time. Thus one can control the flow of quantum excitations between the two junctions.
description: 5 pages, 3 figures. Improved version, title was slightly changed. Accepted in Europhysics Letters (http://www.iop.org/EJ/journal/EPL)