cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Large transient states in quantum field theory
Creators: name: Berera, Arjun
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A study is made of the scattering of two large composite projectiles, such as heavy ions, which are initially prepared in a pure quantum state. It is shown that the quantum field theoretic evolution equation for this system, under certain conditions, goes over in form to the master equation of classical statistical mechanics. Thus, the statistical mechanical description of heavy ion collision is viewed as an implied outcome of the Correspondence Principle, which states that in the limit of large quantum number, quantum dynamics goes over to classical dynamics. This hypothesis is explored within the master equation transcription with particular focus on the quark-gluon formation scenario.
description: 28 pages, In Press Nuclear Physics A 2007
Reply to "Comment on `Multiparty quantum mutual information: An alternative definition'"
Creators: name: Kumar, Asutosh
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We reaffirm the claim of Lee et al. [preceding Comment, Phys. Rev. A 108, 066401 (2023)] that the expression of quantum dual total correlation of a multipartite system in terms of quantum relative entropy as proposed in previous work [A. Kumar, Phys. Rev. A 96, 012332 (2017)] is not correct. We provide alternate expression(s) of quantum dual total correlation in terms of quantum relative entropy. We, however, prescribe that in computing quantum dual total correlation one should use its expression in terms of von Neumann entropy.
description: 4 + epsilon pages, see also Phys. Rev. A 108, 066401 (2023)
Stationary Solutions of SPDEs and Infinite Horizon BDSDEs
Creators: name: Zhang, Qi
name: Zhao, Huaizhong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper we study the existence of stationary solutions for stochastic partial differential equations. We establish a new connection between $L_ρ^2({\mathbb{R}^{d}};{\mathbb{R}^{1}}) \otimes L_ρ^2({\mathbb{R}^{d}};{\mathbb{R}^{d}})$ valued solutions of backward doubly stochastic differential equations (BDSDEs) on infinite horizon and the stationary solutions of the SPDEs. Moreover, we prove the existence and uniqueness of the solutions of BDSDEs on both finite and infinite horizons, so obtain the solutions of initial value problems and the stationary solutions (independent of any initial value) of SPDEs. The connection of the weak solutions of SPDEs and BDSDEs has independent interests in the areas of both SPDEs and BSDEs.
CodingHomo: Bootstrapping Deep Homography With Video Coding
Creators: name: Liu, Yike
name: Li, Haipeng
name: Liu, Shuaicheng
name: Zeng, Bing
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Homography estimation is a fundamental task in computer vision with applications in diverse fields. Recent advances in deep learning have improved homography estimation, particularly with unsupervised learning approaches, offering increased robustness and generalizability. However, accurately predicting homography, especially in complex motions, remains a challenge. In response, this work introduces a novel method leveraging video coding, particularly by harnessing inherent motion vectors (MVs) present in videos. We present CodingHomo, an unsupervised framework for homography estimation. Our framework features a Mask-Guided Fusion (MGF) module that identifies and utilizes beneficial features among the MVs, thereby enhancing the accuracy of homography prediction. Additionally, the Mask-Guided Homography Estimation (MGHE) module is presented for eliminating undesired features in the coarse-to-fine homography refinement process. CodingHomo outperforms existing state-of-the-art unsupervised methods, delivering good robustness and generalizability. The code and dataset are available at: \href{github}{https://github.com/liuyike422/CodingHomo
European integration and the member states : The national case, public opinion, party systems, and the role of electoral systems
Creators: name: Brown IV, George Garvin
Publisher: name: University of British Columbia
Year: 2009

description: Each of the member states of the European Union has had internal debates over the nature of European integration. The terms of the debate in each of the states have been framed by the visions of Jean Monnet and Charles de Gaulle. Monnet's vision of Europe was that of a federal and politically united continent, de Gaulle's vision of Europe was that of a loosely grouped and non-political Union. The goal of this thesis is to understand why the states have had different degrees of debate over European integration. Chapter I explains how the geographical, historical, economic, and political dimensions of a state can affect public opinion on European integration. A 'Combined Pro and Anti-integrationist Ranking of Member States' is made at the end of the chapter by giving each state one point for each pro-integrationist dimension that applies to it, and by subtracting one point for each anti-integrationist dimension that applies to it. Chapter II tests the ranking made in Chapter I by examining public opinion polls and European Parliament election results. A state that ranks as anti-integrationist in Chapter I is expected to have more anti-integrationist public opinion than the other states, and greater electoral results for its anti-integrationist political parties. It is expected that any exception to this pattern will be explained as the effect of a state's electoral system. Chapter III will complete our study by examining which states seem most likely to develop anti-integrationist political parties in the near future. By comparing the percentage of the public that poll as anti-integrationist to the percentage of the public that votes anti-integrationist, we will be able to make a rough estimate of which state has the capacity to develop anti-integration parties. We expect to find that our preliminary ranking of the member states in Chapter I will be corroborated by the evidence found in the subsequent chapters. These findings will allow us to better understand the current debates in the member states over European integration, and will allow us to suggest possibilities about where the new members of the EU will eventually stand on the integration debate.
Stress transmission in wet granular materials
Creators: name: Richefeu, Vincent
name: Radjaï, Farhang
name: Youssoufi, Moulay Saïd El
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analyze stress transmission in wet granular media in the pendular state by means of three-dimensional molecular dynamics simulations. We show that the tensile action of capillary bonds induces a self-stressed particle network organized in two percolating "phases" of positive and negative particle pressures. Various statistical descriptors of the microstructure and bond force network are used to characterize this partition. Two basic properties emerge: 1) The highest particle pressure is located in the bulk of each phase; 2) The lowest pressure level occurs at the interface between the two phases, involving also the largest connectivity of the particles via tensile and compressive bonds. When a confining pressure is applied, the number of tensile bonds falls off and the negative phase breaks into aggregates and isolated sites.
How Influenza's Spike Motor Works
Creators: name: Ziebert, Falko
name: Kulić, Igor M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: While often believed to be a passive agent that merely exploits its host's metabolism, influenza virus has recently been shown to actively move across glycan-coated surfaces. This form of enzymatically driven surface motility is currently not well understood and has been loosely linked to burnt-bridge Brownian ratchet mechanisms. Starting from known properties of influenza's spike proteins, we develop a physical model that quantitatively describes the observed motility. It predicts a collectively emerging dynamics of spike proteins and surface bound ligands that combined with the virus' geometry give rise to a self-organized rolling propulsion. We show that in contrast to a Brownian ratchet, the rotary spike drive is not fluctuation driven but operates optimally as a macroscopic engine in the deterministic regime. The mechanism also applies to relatives of influenza and to man-made analogues like DNA-monowheels and should give guidelines for their optimization.
description: 5 pages , 4figures
Context-Sensitive Languages, Rational Graphs and Determinism
Creators: name: Carayol, Arnaud
name: Meyer, Antoine
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.3

description: We investigate families of infinite automata for context-sensitive languages. An infinite automaton is an infinite labeled graph with two sets of initial and final vertices. Its language is the set of all words labelling a path from an initial vertex to a final vertex. In 2001, Morvan and Stirling proved that rational graphs accept the context-sensitive languages between rational sets of initial and final vertices. This result was later extended to sub-families of rational graphs defined by more restricted classes of transducers. languages.

 Our contribution is to provide syntactical and self-contained proofs of the above results, when earlier constructions relied on a non-trivial normal form of context-sensitive grammars defined by Penttonen in the 1970's. These new proof techniques enable us to summarize and refine these results by considering several sub-families defined by restrictions on the type of transducers, the degree of the graph or the size of the set of initial vertices.
Situate, lying, and being in the city of Vancouver’ : independent real estate entrepreneurs, 1884-1893
Creators: name: Longhurst, Grant Montgomery
Publisher: name: University of British Columbia
Year: 2009

description: This paper is an attempt to describe the character of business enterprise in nineteenth century Vancouver by examining real estate businessmen during the city's first boom from 1884-1893. Throughout the 1880s the area could still be described as a 'frontier' environment where rapid growth, general uncertainty, and fluid economic and social boundaries meant that the people who took an active role in a city's founding were crucial in determining the city's business culture. What makes Vancouver's situation intriguing was the fact that businessmen representing a hierarchy of salaried corporate executives, specifically the managers of the Canadian Pacific Railway, and businessmen representing a very individualistic approach to enterprise, converged on the south shore of Burrard Inlet at the same time. While not unique to Vancouver, these two conceptions of business, active on a large scale at approximately the same time, created a commercial identity and environment particular to Vancouver. Using Alfred Chandler's four stage model on the changing relationship of business and entrepreneurship to society in the nineteenth and twentieth centuries, this paper proposes to show that, instead of following an evolutionary process of ever increasing business size and complexity through time, Vancouver's real estate industry and general business community retained the characteristics of independent personal enterprise to a greater degree than the dominant position of the CPR would suggest. Even when attempts were made to establish institutions of self-interested collectivism or move toward a style of entrepreneurial capitalism, they were all effectively applied to the advantage of the individual. The voluntary and membership organizations such as the Vancouver Real Estate Board, and the Vancouver Board of Trade, the new business syndicates like the Vancouver Improvement Company and the Vancouver Loan, Trust, Savings, and Guarantee Company, and the decisions to enter the municipal, provincial, and federal political arenas were still dominated by an individualist creed. Until the maturation of the staple based industries enabled other enterprises to adopt managerial capitalism, the philosophy of the business community would remain heavily influenced by a personal enterprise form of business operation.
HAVONING BAKTERIOLOGIK IFLOSLANISHI VA AHAMIYATI
Creators: name: Abdullayeva O'g'iloy Yakubovna Farg'ona Jamoat Salomatligi Tibbiyot Instituti "Kommunal va mehnat  gigiyenasi" kafedra asissenti
name: Fayzullayeva Gulmira Baxodir qizi Farg'ona Jamoat Salomatligi Tibbiyot Instituti 5- bosqich talabasi
Publisher: name: Zenodo
Year: 2024

description: Inson salomatligini saqlashda atmosfera havosining ekologik holatini salbiy tomonga o‘zgarishining oldini olish eng dolzarb muammolardan biri hisoblanadi. Sababi, ifloslangan atmosfera havosidagi zaharli gazlar to‘g‘ridan-to‘g‘ri qonga o‘tib, organizmni zaharlaydi, changlar esa o‘pka alveolalari devorlariga yopishib, yallig‘lanish jarayonini, to‘qimalarning qalinlashishini keltirib chiqarib, havo tarkibidagi organizm uchun o‘ta zarur bo‘lgan O2 (oksigen)ning unga kam kirishiga, modda almashish jarayonlarini izdan chiqarishga sabab bo‘ladi.
Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 4. The Higgs resonance region
Creators: name: Banerjee, Shankha
name: Boudjema, Fawzi
name: Chakrabarty, Nabarun
name: Sun, Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: One-loop electroweak corrections to the annihilation cross-sections of dark matter in the Higgs resonance region of the inert doublet model (IDM) are investigated. The procedure of how to implement the width of the Higgs in order to regularise the amplitude both at tree-level and at one-loop together with the renormalisation of a key parameter of the model, are thoroughly scrutinised. The discussions go beyond the application to the relic density calculation and also beyond the IDM so that addressing these technical issues can help in a wider context. We look in particular at the dominant channels with the $b \bar b$ final state and the more involved 3-body final state, $W f \bar f^\prime$, where both a resonance and an anti-resonance, due to interference effects, are present. We also discuss how to integrate over such configurations when converting the cross-sections into a calculation of the relic density.
description: v1: 20 pages, 8 figures and 2 tables
D2.1 Requirements: context of application
Creators: name: Paiz, Angel
name: Denysiuk, Roman
name: Vinyals, Meritxell
name: Sanchez, Daniel
name: Shallal, Balsam
name: Mourshed, Monjur
name: Maas, Frits
name: Gay, Matthieu
name: Pabst, Nicolas
name: Lodeweyckx, Stefan
name: Bastiaenses, Jan
name: Kazmi, Hussain
name: Maryama, Victor
name: Almeida, Murilo
name: Kavgic, Aleksandar
name: Sissini, Mario
name: Sterling, Raymond
name: Cullinane, Daniel
name: Jones, Nathan
Publisher: name: Zenodo
Year: 2019

description: Increasing flexibility is key for the reliable operation of future power systems with very high penetration levels of Variable Renewable Energy Sources (VRES). In this scenario, the most significant source of flexibility is Demand Response (DR). The DRIvE project intends to develop and validate a fully-integrated Information and Communication Technology (ICT) infrastructure consisting of interoperable DR-enabling energy management solutions for residential and tertiary buildings and a platform for effective and secure management of flexibility at the level of the distribution grid. This report discusses the various aspects of the technology upon which the DRIvE development will build. The DRIvE solution should comply with both legacy building automation protocols and emerging smart grid communication and cyber-security standards. It should also include extended capabilities of state-of-the-art forecasting and optimisation algorithms and have a user interface attractive enough to engage end-users into modifying consuming habits.
Οι οχυρωμένοι οικισμοί της πρώιμης Εποχής του Χαλκού στο Αιγαίο:
Creators: name: Χρηστάκη, Φωτεινή Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Οχυρώσεις
Πρώιμη Εποχή Χαλκού
Αιγαίο
Fortifications
Early Bronze Age
Aegean

description: Οι οχυρώσεις είναι ένα φαινόμενο το οποίο συχνά αναφέρεται ως χαρακτηριστικό στοιχείο της Πρώιμης Εποχής του Χαλκού στο Αιγαίο κι έχει συνδεθεί με την αντίληψη ότι αντικατοπτρίζει ταραγμένους καιρούς, καιρούς έντονης πολεμικής δραστηριότητας, που έχουν τη μορφή επιδρομών. Στα έργα αυτά, ωστόσο, που ασχολούνται με τον χαρακτήρα της Εποχής, οι αναφορές στις οχυρώσεις γίνονται σε επίπεδο επιφανειακό και εντελώς γενικευτικό, χωρίς να δίνεται πολύ μεγάλη προσοχή στις κατασκευαστικές και λειτουργικές λεπτομέρειες, καθώς και στο οικιστικό πλαίσιο στο οποίο ενσωματώνονται. Απουσιάζει, δηλαδή, μια μελέτη όπου θα εξετάζεται η κάθε οχύρωση -με το οικιστικό της πλαίσιο- ξεχωριστά, ώστε να γίνει κατανοητή η λειτουργία της σε συγκεκριμένο περιβάλλον, και στη συνέχεια να εντοπιστούν οι γενικές τάσεις ή διαφοροποιήσεις σε ένα ευρύτερο γεωγραφικό και χρονολογικό πλαίσιο. Η παρούσα εργασία ασχολείται με τους οχυρωμένους οικισμούς της Πρώιμης Εποχής του Χαλκού στο Αιγαίο και επιχειρεί να διασαφηνίσει τη λειτουργία των αμυντικών έργων κι ενδεχομένως να εντοπίσει τους λόγους κατασκευής τους στο συγκεκριμένο χρονολογικό και γεωγραφικό πλαίσιο.
description: Fortifications are a phenomenon often referred to as a feature of the Early Bronze Age in the Aegean Sea and is connected with the perception that reflects troubled times, times of intense military activity in the form of raids. In these works, however, concerned with the nature of the Age, references that are made to fortifications at superficial and completely generalized, without giving too much attention to structural and operational details, as well as to the residential context in which they are incorporated. Absent is a study which will consider all the fortifications, with their residential context, separately, to understand the function of a particular environment and then to identify general trends or variations in a wider geographical and chronological context. This paper deals with the fortified settlements of the Early Bronze Age Aegean and attempts to clarify the operation of defensive works and perhaps identify the reasons of their construction in this certain chronological and geographical context.
Quantum turbulence and correlations in Bose-Einstein condensate collisions
Creators: name: Norrie, A. A.
name: Ballagh, R. J.
name: Gardiner, C. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate numerically simulated collisions between experimentally realistic Bose-Einstein condensate wavepackets, within a regime where highly populated scattering haloes are formed. The theoretical basis for this work is the truncated Wigner method, for which we present a detailed derivation, paying particular attention to its validity regime for colliding condensates. This paper is an extension of our previous Letter [A. A. Norrie, R. J. Ballagh, and C. W. Gardiner, Phys. Rev. Lett. 94, 040401 (2005)] and we investigate both single-trajectory solutions, which reveal the presence of quantum turbulence in the scattering halo, and ensembles of trajectories, which we use to calculate quantum-mechanical correlation functions of the field.
The structure of one-relator relative presentations and their centres
Creators: name: Klyachko, Anton A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F05, 20F06, 20E06, 20E22

description: Suppose that G is a nontrivial torsion-free group and w is a word in the alphabet G\cup\{x_1^{\pm1},...,x_n^{\pm1}\} such that the word w' obtained from w by erasing all letters belonging to G is not a proper power in the free group F(x_1,...,x_n). We show how to reduce the study of the relative presentation Ĝ= to the case n=1. It turns out that an "n-variable" group Ĝ can be constructed from similar "one-variable" groups using an explicit construction similar to wreath product. As an illustration, we prove that, for n>1, the centre of Ĝ is always trivial. For n=1, the centre of Ĝ is also almost always trivial; there are several exceptions, and all of them are known.
description: 15 pages. A Russian version of this paper is at http://mech.math.msu.su/department/algebra/staff/klyachko/papers.htm . V4: the intoduction is rewritten; Section 1 is extended; a short introduction to Secton 5 is added; some misprints are corrected and some cosmetic improvements are made
Normal scalar curvature conjecture and its applications
Creators: name: Lu, Zhiqin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper, we proved the Normal Scalar Curvature Conjecture and the Bottcher-Wenzel Conjecture. We also established some new pinching theorems for minimal submanifolds in spheres.
description: minor and final typo corrections
On the X-ray spectra of luminous, inhomogeneous accretion flows
Creators: name: Merloni, A.
name: Malzac, J.
name: Fabian, A. C.
name: Ross, R. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the expected X-ray spectral and variability properties of black hole accretion discs at high luminosity, under the hypothesis that radiation pressure dominated discs are subject to violent clumping instabilities and, as a result, have a highly inhomogeneous two-phase structure. After deriving the full accretion disc solutions explicitly in terms of the parameters of the model, we study their radiative properties both with a simple two-zones model, treatable analytically, and with radiative transfer simulations which account simultaneously for energy balance and Comptonisation in the hot phase, together with reflection, reprocessing, ionization and thermal balance in the cold phase. We show that, if not only the density, but also the heating rate within these flows is inhomogeneous, then complex reflection-dominated spectra can be obtained for a high enough covering fraction of the cold phase. In general, large reflection components in the observed X-ray spectra should be associated with strong soft excesses, resulting from the combined emission of ionized atomic emission lines. The variability properties of such systems are such that, even when contributing to a large fraction of the hard X-ray spectrum, the reflection component is less variable than the power-law like emission originating from the hot Comptonising phase, in agreement with what is observed in many Narrow Line Seyfert 1 galaxies and bright Seyfert 1. Our model falls within the family of those trying to explain the complex X-ray spectra of bright AGN with ionized reflection, but presents an alternative, specific, physically motivated, geometrical setup for the complex multi-phase structure of the inner regions of near-Eddington accretion flows.
description: 15 pages, 9 figures. MNRAS, in press
title: Διατεταγμένοι χώροι και εφαρμογές στη μαθηματική χρηματοοικονομία
titleType: AlternativeTitle
title: Ordered spaces and applications to mathematical finance
Creators: name: Xanthos, Foivos I.
Publisher: name: National Technological University of Athens
Year: 2012
Subjects: Διατεταγμένοι χώροι
Γεωμετρία Κώνων
Θεωρία χώρων Banach
Θετικές βάσεις
Αγορές αξιογράφων
Ordered vector spaces
Geometry of cones
Theory of Banach spaces
Positive Bases
Lattice subspaces
Replication of options

description: 115 σ.
description: Η παρούσα διατριβή χωρίζεται σε δύο λογικές ενότητες. Στην πρώτη λογική ενότητα, που αντιστοιχεί στα κεφάλαια 2-3 μελετάμε την δομή των χώρων Banach μέσω της γεωμετρίας των κώνων. Ειδικότερα στο κεφάλαιο δύο, δίνουμε κωνικούς χαρακτηρισμούς της ανακλαστικότητας, των χώρων που περιέχουν τον c0 και των χώρων Grothendieck. Επίσης αποδεικνύουμε οτι κάθε διατεταγμένος χώρος Banach με κλειστό, normal κώνο και διατακτική μονάδα που έχει την CIP είναι χώρος Grothendieck. Στο κεφάλαιο 3 εισάγουμε την έννοια των ανακλαστικών κώνων και μελετάμε τη δομή τους. Στη δεύτερη λογική ενότητα, χρησιμοποιούμε την θεωρία των θετικών βάσεων και των lattice-subspace (κεφ. 4) που έχει αναπτυχθεί απο΄τον Επιβλέπων Ι.Α. Πολυράκη, για να μελετήσουμε το πρόβλημα του replication δικαιωμάτων σε πεπερασμένες οικονομίες(κεφ. 5).
description: The PhD thesis is composed of two parts. In the first part we study the structure of Banach spaces through the geometry of cones. In particular, in chapter two we give cone characterizations of reflexive spaces, spaces that contain c0 and Grothendieck spaces. Also, we prove that every ordered Banach space with closed, normal cone and an order unit that satisfies the CIP is a Grothendieck space. In chapter three, we define the notion of reflexive cones and study their structure. In the second part, we use the theory of lattice-subspaces and positive bases ( Ch. 4), which has been developed by I.A. Polyrakis, in order to study the problem of replication of option in finite markets(Ch. 5).
title: การยกระดับคุณภาพตะกอนดินของบึงบอระเพ็ดด้วยปุ๋ยหมักจากวัชพืชน้ำ เพื่อการใช้ประโยชน์ทางการเกษตรตามแนวทางโมเดลเศรษฐกิจใหม่ (BCG Model) ของจังหวัดนครสวรรค์
Creators: name: ธนากร จันหมะกสิต
name: ณพล อนุตตรังกูร
name: จิระเดช บุญมาก
name: วชิระ กว้างขวาง
name: วีระเดช มีอินเกิด
name: ปัณฑารีย์ แต้ประยูร
Publisher: name: Mahidol University
publisherIdentifierScheme: ROR
Year: 2025
Subjects: ตะกอนดิน
วัชพืชน้ำ
ปุ๋ยหมักแบบไม่พลิกกอง
คะน้า
โมเดลเศรษฐกิจใหม่

description: Mahidol R2R e-Journal, 12, 1, 64-76
Energy transport by acoustic modes of harmonic lattices
Creators: name: Harris, Lisa
name: Lukkarinen, Jani
name: Teufel, Stefan
name: Theil, Florian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70J30; 74Q15; 37K60

description: We study the large scale evolution of a scalar lattice excitation which satisfies a discrete wave-equation in three dimensions. We assume that the dispersion relation associated to the elastic coupling constants of the wave-equation is acoustic, i.e., it has a singularity of the type |k| near the vanishing wave vector, k=0. To derive equations that describe the macroscopic energy transport we introduce the Wigner transform and change variables so that the spatial and temporal scales are of the order of epsilon. In the continuum limit, which is achieved by sending the parameter epsilon to 0, the Wigner transform disintegrates into three different limit objects: the transform of the weak limit, the H-measure and the Wigner-measure. We demonstrate that these three limit objects satisfy a set of decoupled transport equations: a wave-equation for the weak limit of the rescaled initial data, a dispersive transport equation for the regular limiting Wigner measure, and a geometric optics transport equation for the H-measure limit of the initial data concentrating to k=0. A simple consequence of our result is the complete characterization of energy transport in harmonic lattices with acoustic dispersion relations.
description: 34 pages, 2 figures
Interdependent transport via percolation backbones in spatial networks
Creators: name: Gross, Bnaya
name: Bonamassa, Ivan
name: Havlin, Shlomo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The functionality of nodes in a network is often described by the structural feature of belonging to the giant component. However, when dealing with problems like transport, a more appropriate functionality criterion is for a node to belong to the network's backbone, where the flow of information and of other physical quantities (such as current) occurs. Here we study percolation in a model of interdependent resistor networks and show the effect of spatiality on their coupled functioning. We do this on a realistic model of spatial networks, featuring a Poisson distribution of link-lengths. We find that interdependent resistor networks are significantly more vulnerable than their percolation-based counterparts, featuring first-order phase transitions at link-lengths where the mutual giant component still emerges continuously. We explain this apparent contradiction by tracing the origin of the increased vulnerability of interdependent transport to the crucial role played by the dandling ends. Moreover, we interpret these differences by considering an heterogeneous $k$-core percolation process which enables to define a one-parameter family of functionality criteria whose constraints become more and more stringent. Our results highlight the importance that different definitions of nodes functionality have on the collective properties of coupled processes, and provide better understanding of the problem of interdependent transport in many real-world networks.
description: 7 pages, 6 figures
Rigorous results in the scaling theory of irreversible aggregation kinetics
Creators: name: Leyvraz, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The kinetic equations describing irreversible aggregation and the scaling approach developed to describe them in the limit of large times and large sizes are tersely reviewed. Next, a system is considered in which aggregates can only react with aggregates of their own size. The existence of a scaling solution of the kinetic equations can then be shown rigorously in the case in which the total mass of the system is conserved. A large number of detailed properties of the solution, previously predicted by qualitative arguments, can be shown rigorously as well in this system. In the case in which gelation occurs, some sketchy rigorous results are shown, and numerical evidence for the existence of a scaling solution is presented. These are the first explicit examples of typical scaling behaviour for systems exhibiting gelation.
description: 17 pages 2 figures
SOCIAL MEDIA
Creators: name: Ahmedov Azimjon Ilhomovich Sobirova Muxtasaroy (Uzbekistan, Andijan
Publisher: name: Zenodo
Year: 2024

description: The majority of teens have positive online experiences, but some are caught in an online feedback loop of meanness and negative experiences. The majority of social media-using teens say their experience is that their peers are mostly kind to one another on social network sites, but their views are less positive when compared with similar assessments from online adults.

Keywords: social media, black teens, how people act online, on social media from how they act in person and at school
title: การพัฒนาระบบสารสนเทศสำหรับฐานข้อมูลผู้ทรงคุณวุฒิ สำหรับบริหารจัดการด้านวิจัย กรณีศึกษา : สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครปฐม
Creators: name: ศิรินทรา ปรางเปรมปรี
Publisher: name: Mahidol University
publisherIdentifierScheme: ROR
Year: 2025
Subjects: บริหารจัดการด้านวิจัย
ระบบสารสนเทศ
ผู้ทรงคุณวุฒิ

description: Mahidol R2R e-Journal, 12, 1, 77-90
Exploring the language of the sharing economy: Building trust and reducing privacy concern on Airbnb in German and English
Creators: name: Zarifis, Alex
name: Ingham, Richard
name: Kroenung, Julia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The text in the profile of those offering their properties in England in English and in Germany in German, are compared to explore whether trust is built, and privacy concerns are reduced in the same way. Six methods of building trust are used by the landlords: (1) the level of formality, (2) distance and proximity, (3) emotiveness and humor, (4) being assertive and passive aggressive, (5) conformity to the platform language style and terminology and (6) setting boundaries. Privacy concerns are not usually reduced directly as this is left to the platform. The findings indicate that language has a limited influence and the platform norms and habits are the biggest influence.
Techniques for reducing fiber-fed and integral-field spectroscopy data: The software package R3D
Creators: name: Sanchez, S. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper describes the general characteristics of raw data from fiber-fed spectrographs in general and fiber-fed IFUs in particular. The different steps of the data reduction are presented, and the techniques used to address the unusual characteristics of these data are described in detail. These techniques have been implemented in a specialized software package, R3D, developed to reduce fiber-based integral field spectroscopy (IFS) data. The package comprises a set of command-line routines adapted for each of these steps, suitable for creating pipelines. The routines have been tested against simulations, and against real data from various integral field spectrographs (PMAS, PPAK, GMOS, VIMOS and INTEGRAL). Particular attention is paid to the treatment of cross-talk.
description: 12 pages, 8 figures, accepted for publishing in Astron. Nachrichten
On the accuracy of the ALMA flux calibration in the time domain and across spectral windows
Creators: name: Francis, Logan
name: Johnstone, Doug
name: Herczeg, Gregory
name: Hunter, Todd R.
name: Harsono, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A diverse array of science goals require accurate flux calibration of observations with the Atacama Large Millimeter/Submillimeter array (ALMA), however, this goal remains challenging due to the stochastic time-variability of the ``grid'' quasars ALMA uses for calibration. In this work, we use 343.5 GHz (Band 7) ALMA Atacama Compact Array observations of four bright and stable young stellar objects over 7 epochs to independently assess the accuracy of the ALMA flux calibration and to refine the relative calibration across epochs. The use of these four extra calibrators allow us to achieve an unprecedented relative ALMA calibration accuracy of $\sim 3\%$. On the other hand, when the observatory calibrator catalog is not up-to-date, the Band 7 data calibrated by the ALMA pipeline may have a flux calibration poorer than the nominal 10\%, which can be exacerbated by weather-related phase decorrelation when self-calibration of the science target is either not possible or not attempted. We also uncover a relative flux calibration uncertainty between spectral windows of 0.8\%, implying that measuring spectral indices within a single ALMA band is likely highly uncertain. We thus recommend various methods for science goals requiring high flux accuracy and robust calibration, in particular, the observation of additional calibrators combined with a relative calibration strategy, and observation of solar system objects for high absolute accuracy.
Χαρακτηριστικά και παράγοντες επιτυχίας των ομάδων τοπικής ανάπτυξης:
Creators: name: Παπαδόπουλος, Κυριάκος Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Ομάδες Τοπικής Δράσης
Αγροτική Ανάπτυξη
Ανάλυση Απόκλισης-Συμμετοχής
Ανάλυση Δικτύων
Local Activity Group
Rural Development
Shift-Share Analysis
Network Analysis

description: Οι αγροτικές περιοχές της Ευρωπαϊκής Ένωσης (ΕΕ) χαρακτηρίζονται από μεγάλη ποικιλομορφία δομών ενώ παράλληλα αντιμετωπίζουν μια σειρά προβλημάτων, τα οποία επηρεάζουν τη βιωσιμότητα τους. Η εμπειρία του παρελθόντος έδειξε ότι τέτοιες περιοχές μπορούν να αντιμετωπίσουν αρκετά από τα προβλήματα μέσω ειδικών πρωτοβουλιών όπως ήταν οι Κοινοτικές Πρωτοβουλίες LEADER I και LEADER II. Η Κοινοτική Πρωτοβουλία LEADER+ αποτελεί τη συνέχεια των παραπάνω πρωτοβουλιών για την 3η και 4η Προγραμματική Περίοδο (ΠΠ) για ολοκληρωμένη ανάπτυξη σε χωρικό επίπεδο. Στην Ελλάδα η Κοινοτική Πρωτοβουλία LEADER+ υλοποιείται από 40 Ομάδες Τοπικής Δράσης (ΟΤΔ). Στην εργασία αυτή χρησιμοποιούνται οι μέθοδοι της Ανάλυσης Απόκλισης-Συμμετοχής και της Ποιοτικής Ανάλυσης Δικτύων και επιχειρείται η αξιολόγηση και η κατάταξη των ΟΤΔ με βάση τις χρηματοδοτήσεις που διαχειρίστηκαν και η ανάδειξη των χαρακτηριστικών και παραγόντων τους που συντελούν στην επιτυχή λειτουργία τους. Από την εφαρμογή της Ανάλυσης Απόκλισης-Συμμετοχής στις 40 ΟΤΔ προέκυψαν 4 Περιφερειακοί Τύποι (ΠΤ) ενώ από την εφαρμογή της Ανάλυσης Δικτύων αναδείχθηκαν μια σειρά από ενδογενείς παράγοντες και ποιοτικά χαρακτηριστικά επιτυχίας αυτών των ΟΤΔ. Τα αποτελέσματα που προκύπτουν από την ανάλυση αυτή είναι ιδιαίτερα χρήσιμα για τη χάραξη πολιτικής ολοκληρωμένης ανάπτυξης του αγροτικού χώρου.
description: Agriculture areas in European Union (EU) are characterized of a large range of structures while they are facing a number of problems, which affect the viability of these areas. Experience shows that these areas can face many problems efficiency, through specific initiatives such as Community Initiatives LEADER I and LEADER II. The Community Initiative LEADER+ continues the initiatives mentioned above for the 3rd and 4rd Programming Period (PP), supports the integrated development in land-planning level. In Greece the Community Initiative LEADER+ is implemented by 40 Local Activity Groups (LAG). In this study, the Shift-Share Analysis and Quantitative Network Analysis are used, and attempting the estimation and ranking of LAGs based on the community funds, that they administrated. Furthermore, this paper attempts to show the LAGs characteristics and the effective factors of their activity. The Shift-Share Analysis shows the grouping of LAGs in 4 Regional LEADER Types (RT) while the Network Analysis presents the effective endogenous factors and qualitative characteristics of these LAGs. The results of this study are quite useful and essential for the planning similar Integrated Programs of Rural Development project.
Speech Gesture Generation from the Trimodal Context of Text, Audio, and Speaker Identity
Creators: name: Yoon, Youngwoo
name: Cha, Bok
name: Lee, Joo-Haeng
name: Jang, Minsu
name: Lee, Jaeyeon
name: Kim, Jaehong
name: Lee, Geehyuk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Graphics (cs.GR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: For human-like agents, including virtual avatars and social robots, making proper gestures while speaking is crucial in human--agent interaction. Co-speech gestures enhance interaction experiences and make the agents look alive. However, it is difficult to generate human-like gestures due to the lack of understanding of how people gesture. Data-driven approaches attempt to learn gesticulation skills from human demonstrations, but the ambiguous and individual nature of gestures hinders learning. In this paper, we present an automatic gesture generation model that uses the multimodal context of speech text, audio, and speaker identity to reliably generate gestures. By incorporating a multimodal context and an adversarial training scheme, the proposed model outputs gestures that are human-like and that match with speech content and rhythm. We also introduce a new quantitative evaluation metric for gesture generation models. Experiments with the introduced metric and subjective human evaluation showed that the proposed gesture generation model is better than existing end-to-end generation models. We further confirm that our model is able to work with synthesized audio in a scenario where contexts are constrained, and show that different gesture styles can be generated for the same speech by specifying different speaker identities in the style embedding space that is learned from videos of various speakers. All the code and data is available at https://github.com/ai4r/Gesture-Generation-from-Trimodal-Context.
description: 16 pages; ACM Transactions on Graphics (SIGGRAPH Asia 2020)
Statistics of Deep Energy States in Coulomb Glasses
Creators: name: Glatz, A.
name: Vinokur, V. M.
name: Galperin, Y. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the statistics of local energy minima in the configuration space and the energy relaxation due to activated hopping in a system of interacting electrons in a random environment. The distribution of the local minima is exponential, which is in agreement with extreme value statistics considerations. The relaxation of the system energy shows logarithmic time dependence reflecting the ultrametric structure of the system.
description: 4 pages, 4 figures
Particle-Based Shape Modeling for Arbitrary Regions-of-Interest
Creators: name: Xu, Hong
name: Morris, Alan
name: Elhabian, Shireen Y.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Statistical Shape Modeling (SSM) is a quantitative method for analyzing morphological variations in anatomical structures. These analyses often necessitate building models on targeted anatomical regions of interest to focus on specific morphological features. We propose an extension to \particle-based shape modeling (PSM), a widely used SSM framework, to allow shape modeling to arbitrary regions of interest. Existing methods to define regions of interest are computationally expensive and have topological limitations. To address these shortcomings, we use mesh fields to define free-form constraints, which allow for delimiting arbitrary regions of interest on shape surfaces. Furthermore, we add a quadratic penalty method to the model optimization to enable computationally efficient enforcement of any combination of cutting-plane and free-form constraints. We demonstrate the effectiveness of this method on a challenging synthetic dataset and two medical datasets.
ВОПРОСЫ ОРГАНИЗАЦИИ САМОСТОЯТЕЛЬНОЙ   ДЕЯТЕЛЬНОСТИ СТУДЕНТОВ
Creators: name: Каримов Намаз Мамасалиевич- старший преподаватель Джизакского Государственного Педагогического университета имени А.Кадыри
Publisher: name: Zenodo
Year: 2024

description: В статье рассматриваются проблемы организации самостоятельной работы студентов с использованием информационных и телекоммуникационных компьютерных технологий, обеспечивающих реализацию индивидуальной личностно-профессиональной траектории развития будущего специалиста.

Ключевые слова: Проектирование, компетенции, кейс-технологии, репродуктивный уровень, реконструктивный уровень , эвристический уровень, творческий уровень, портфолио
The Formaldehyde Masers in Sgr B2: Very Long Baseline Array and Very Large Array Observations
Creators: name: Hoffman, Ian M.
name: Goss, W. M.
name: Palmer, Patrick
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of two of the formaldehyde (H2CO) masers (A and D) in Sgr B2 using the VLBA+Y27 (resolution ~0.01") and the VLA (resolution ~9") are presented. The VLBA observations show compact sources (<10 milliarcseconds, <80 AU) with brightness temperatures >10^8 K. The maser sources are partially resolved in the VLBA observations. The flux densities in the VLBA observations are about 1/2 those of the VLA; and, the linewidths are about 2/3 of the VLA values. The applicability of a core-halo model for the emission distribution is demonstrated. Comparison with earlier H2CO absorption observations and with ammonia (NH3) observations suggests that H2CO masers form in shocked gas. Comparison of the integrated flux densities in current VLA observations with those in previous observations indicates that (1) most of the masers have varied in the past 20 years, and (2) intensity variations are typically less than a factor of two compared to the 20-year mean. No significant linear or circular polarization is detected with either instrument.
description: 20 pages, 3 figures, 5 tables, accepted to ApJ
A new view of hypercube genus
Creators: name: Hammack, Richard H.
name: Kainen, Paul C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C10, 05C51, 57M15

description: Beineke, Harary and Ringel discovered a formula for the minimum genus of a torus in which the $n$-dimensional hypercube graph can be embedded. We give a new proof of the formula by building this surface as a union of certain faces in the hypercube's 2-skeleton. For odd dimension $n$, the entire 2-skeleton decomposes into $(n-1)/2$ copies of the surface, and the intersection of any two copies is the hypercube graph.
description: 8 pages, 6 figures
Discovery of Variable Iron Fluorescence from Reflection Nebulae in the Galactic Center
Creators: name: Muno, M. P.
name: Baganoff, F. K.
name: Brandt, W. N.
name: Park, S.
name: Morris, M. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on three years of deep observations of the Galactic center with the Chandra X-ray Observatory, we report the discovery of changes in the intensities and morphologies of two hard X-ray nebulosities. The nebulosities are dominated by fluorescent iron emission, and are coincident with molecular clouds. The morphological changes are manifest on parsec scales, which requires that these iron features are scattered X-rays from a 2 or 3-year-long outburst of a point source (either Sgr A* or an X-ray binary) with a luminosity of at least 1e37 erg/s. The variability precludes the hypotheses that these nebulae either are produced by keV electrons bombarding molecular clouds, or are iron-rich ejecta from supernovae. Moreover, the morphologies of the reflection nebulae implies that the dense regions of the clouds are filamentary, with widths of ~0.3 pc and lengths of ~2 pc.
description: 5 pages, 3 figures (2 color). submitted to ApJL