cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Data-driven stochastic modeling of coarse-grained dynamics with finite-size effects using Langevin regression
Creators: name: Snyder, Jordan
name: Callaham, Jared L.
name: Brunton, Steven L.
name: Kutz, J. Nathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Obtaining coarse-grained models that accurately incorporate finite-size effects is an important open challenge in the study of complex, multi-scale systems. We apply Langevin regression, a recently developed method for finding stochastic differential equation (SDE) descriptions of realistically-sampled time series data, to understand finite-size effects in the Kuramoto model of coupled oscillators. We find that across the entire bifurcation diagram, the dynamics of the Kuramoto order parameter are statistically consistent with an SDE whose drift term has the form predicted by the Ott-Antonsen ansatz in the $N\to \infty$ limit. We find that the diffusion term is nearly independent of the bifurcation parameter, and has a magnitude decaying as $N^{-1/2}$, consistent with the central limit theorem. This shows that the diverging fluctuations of the order parameter near the critical point are driven by a bifurcation in the underlying drift term, rather than increased stochastic forcing.
description: 18 pages, 7 figures
On the cosmological constant in quantum cosmology
Creators: name: Kalinin, M. I.
name: Melnikov, V. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Quantization of a dust-like closed isotropic cosmological model with a cosmological constant is realized by the method of B. DeWitt \cite{1}. It is shown that such quantization leads to interesting results, in particular, to a finite lifetime of the system, and appearance of the Universe in our world as penetration via the barrier. These purely quantum effects appear when $Λ>0$.
description: This paper was published originally in "Problems of Gravitational Theory and Particle Theory", VNIIFTRI Proceedings, Moscow, 1972. v. 16(46), pp. 43-48 (in Russian). The English version was published in the journal "Gravitation & Cosmology" in 2003
The Renascence of Classical Thought and Form in the Carolingian Period
Creators: name: Laster, Sara James
Publisher: name: Old Dominion University Libraries
Year: 1983

description: The political stability established under the rule of Charlemagne (768-814) was conducive to the flourishing of the simultaneous resurgence of art and learning. Inspired by the achievements of the Roman Empire, Charlemagne wished to give his subjects a feeling of spiritual unity, a sense of continuity with the past, and an enhanced intellectual life. The classical intellectual tradition is traced from ancient times to the Carolingian present to demonstrate that classicism was a continuum. The thesis examines the classical tradition in the intellectual life of the Carolingian period, its conscious rejuvenation in the figurative arts, and its manifestation in the imperial architecture of the ninth century. It demonstrates that the Carolingian resurgence of classicism was calculated rather than spontaneous. The widespread enthusiastic interest in classicist! and its fresh interpretation were new, rather than classicism itself.
Hugo: A Cluster Scheduler that Efficiently Learns to Select Complementary Data-Parallel Jobs
Creators: name: Thamsen, Lauritz
name: Verbitskiy, Ilya
name: Nedelkoski, Sasho
name: Tran, Vinh Thuy
name: Meyer, Vinicius
name: Xavier, Miguel G.
name: Kao, Odej
name: De Rose, Cesar A. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Distributed data processing systems like MapReduce, Spark, and Flink are popular tools for analysis of large datasets with cluster resources. Yet, users often overprovision resources for their data processing jobs, while the resource usage of these jobs also typically fluctuates considerably. Therefore, multiple jobs usually get scheduled onto the same shared resources to increase the resource utilization and throughput of clusters. However, job runtimes and the utilization of shared resources can vary significantly depending on the specific combinations of co-located jobs. This paper presents Hugo, a cluster scheduler that continuously learns how efficiently jobs share resources, considering metrics for the resource utilization and interference among co-located jobs. The scheduler combines offline grouping of jobs with online reinforcement learning to provide a scheduling mechanism that efficiently generalizes from specific monitored job combinations yet also adapts to changes in workloads. Our evaluation of a prototype shows that the approach can reduce the runtimes of exemplary Spark jobs on a YARN cluster by up to 12.5%, while resource utilization is increased and waiting times can be bounded.
Εύρος δυναμικής και παραγωγή πρωτογράφου μουσικής στην εποχή της διαδικτυακής μετάδοσης
Creators: name: Τσιακίρης, Κωνσταντίνος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ακουστότητα
Μουσική Παραγωγή
Εύρος Δυναμικής
Loudness
Mastering
Dynamic Range

description: Σκοπός της διατριβής ήταν η μελέτη της σχέσης της παραγωγής μουσικού πρωτογράφου (mastering) με το εύρος δυναμικής, τον πόλεμο της ακουστότητας (loudness war) και πως αυτά επηρρεάζονται από την αλλαγή που συμβαίνει με την κυριαρχία της διαδικτυακής μετάδοσης μουσικής. Αρχικά, εξετάζονται τα μεγέθη που αφορούν το φαινόμενο, εξηγείται πως ήταν αναγκαίο να εφευρεθούν καινούριοι ορισμοί και τρόποι μέτρησης για την ακουστότητα, οι εφαρμογές που προκύπτουν και πως αυτό αναμένεται να επηρρεάσει της συνήθειες στην παραγωγή πρωτογράφου. Τέλος, πραγματοποιήθηκαν μετρήσεις ακουστότητας σε 831 μουσικά κομμάτια και έγινε στατιστική επεξεργασία των δεδομένων με σκοπό την παραγωγή συμπερασμάτων για τη σημερινή πραγματικότητα.
description: Τhe aim of the present thesis was the study of the relationship between dynamic range, mastering, loudness war and how they are affected by the ongoing change that is happening after music streaming dominated the market. Firstly, after mentioning the magnitudes associated with the phenomenon, it is explained that it was necessary to invent new definitions and methods of measurement for loudness, the resulting applications, and how this is expected to affect prototype production habits. Finally, loudness measurements were performed on 831 tracks and the data were statistically processed to produce conclusions about the present reality.
description: Σε συνεργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Heavy Ion Collisions at Relativistic Energies: Testing a Nuclear Matter at High Baryon and Isospin Density
Creators: name: Di Toro, M.
name: Colonna, M.
name: Ferini, G.
name: Gaitanos, T.
name: Greco, V.
name: Wolter, H. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that the phenomenology of isospin effects on heavy ion reactions at intermediate energies (few AGeV range) is extremely rich and can allow a ``direct'' study of the covariant structure of the isovector interaction in the hadron medium. We work within a relativistic transport frame, beyond a cascade picture, consistently derived from effective Lagrangians, where isospin effects are accounted for in the mean field and collision terms. Rather sensitive observables are proposed from collective flows (``differential'' flows) and from pion/kaon production ($π^-/π^+$, $K^0/K^+$ yields). For the latter point relevant non-equilibrium effects are stressed. The possibility of the transition to a mixed hadron-quark phase, at high baryon and isospin density, is finally suggested. Some signatures could come from an expected ``neutron trapping'' effect.
description: 8 pages, 4 figures, espcrc1 (latex) style. Conf. "Perspectives in Hadronic Physics", ICTP Trieste May 2006, Nucl.Phys. A, to appear
Helping You Improve Development Productivity and Software Sustainability: An Overview of the IDEAS Productivity Project
Creators: name: Bartlett, Roscoe A.
name: Bernholdt, David E.
name: Dubey, Anshu
name: Gupta, Rinku
name: Heroux, Michael A.
name: McInnes, Lois Curfman
name: Milewicz, Reed
name: Miller, Mark C.
name: Raybourn, Elaine
name: Watson, Greg
name: Willenbring, James
Publisher: name: Zenodo
Year: 2019
Subjects: software engineering
computational science and engineering
software productivity
software sustainability

description: The IDEAS Productivity project (https://ideas-productivity.org) was established to help address challenges to software productivity and sustainability driven by the confluence of demands for predictive multiscale and multiphysics simulations, analysis, and design in computational science and engineering (CSE) and rapid and significant changes in the architectures of high-end computing systems (HPC). IDEAS focuses on improving scientific productivity by qualitatively improving developer productivity (positively impacting product quality, development time, and staffing resources) and software sustainability (reducing the cost of maintaining, sustaining, and evolving software capabilities in the future)—thereby enabling a fundamentally different attitude to creating and supporting CSE applications. We are working within the broader CSE/HPC community to help create an extreme-scale scientific software development ecosystem composed of high-quality, reusable CSE software components and libraries; a collection of best practices, processes, and tools; and substantial outreach mechanisms for promoting and disseminating productivity improvements. We intend to improve CSE productivity by enabling better, faster and cheaper CSE application capabilities for extreme-scale computing. This poster will provide an overview of the IDEAS project’s approach and activities, how you can benefit from this work, and how you can contribute to its further advancement
description: This research was supported by the Exascale Computing Project (17-SC-20-SC), a collaborative effort of the U.S. Department of Energy Office of Science and the National Nuclear Security Administration.
Stimulated-Raman-Adiabatic-Passage mechanism in a magnonic environment
Creators: name: Wang, Qi
name: Brächer, Thomas
name: Fleischhauer, Michael
name: Hillebrands, Burkard
name: Pirro, Philipp
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss the realization of a magnonic version of the STImulated-Raman-Adiabatic-Passage (m-STIRAP) mechanism using micromagnetic simulations. We consider the propagation of magnons in curved magnonic directional couplers. Our results demonstrate that quantum-classical analogy phenomena are accessible in magnonics. Specifically, the inherent advantages of the STIRAP mechanism, associated with dark states, can now be utilized in magnonics. Applications of this effect for future magnonic device functionalities and designs are discussed.
description: 6 pages, 4 figures
Integrated optics asymmetric march-zehnder high-voltage sensors
Creators: name: Huang, Lisheng
Publisher: name: University of British Columbia
Year: 2009

description: Two types of integrated optics Mach-Zehnder (IMZ) interferometers, the striploaded IMZ and the domain-inverted IMZ, to be used for high-voltage measurements, have been investigated in this thesis. The devices are designed to have an asymmetry between their two branches so that the electro-optic responses in two branches are different when immersed in equivalent electric fields. The intensity of the output light reflects the strength of the electric field in which a device is immersed. In the strip-loaded IMZ the asymmetry is achieved by loading a T2i0 film onto one of the two branches, while in the domain-inverted IMZ the asymmetry is realized by inverting the spontaneous polarization in one of the branches. The operating principles, and the designs of the devices, are presented. The mechanism for domain inversion is also studied, and a defect process is proposed for the Ti-induced domain inversio in the c side of L.3iNbO The devices have been fabricated using the Ti-indiffusion method. The lithium out-diffusion, associated with the fabrication, is also discussed, and a pre-out-diffusion method is proposed to resolve the associated surface waveguiding problem. The test results of both device types are given, in particular, the measurements of the basic device parameters, i.e., the half-wave voltage, the intrinsic phase, and the on/off ratio. The results of stability tests and impulse tests are also presented. Also, for the first time in our laboratory, the annealed proton-exchange method has been used to fabricate optical waveguides.
Η προσευχή στην παιδική ηλικία και η Ορθόδοξη Χριστιανική αγωγή
Creators: name: Δερμεντζόγλου, Μαρία Αθανάσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Προσευχή
Θρησκευτική καλλιέργεια
Παιδική ηλικία
Prayer
Orthodox Christian pedagogy
Childhood

description: Η προσευχή είναι η επικοινωνία των πιστών με το Θεό, είναι μια πνευματική εμπειρία. Ο ίδιος ο Θεός δίδαξε πώς να προσεύχονται οι χριστιανοί. Η Εκκλησία βλέπει την προσευχή σαν αγκαλιά και σκοπός της είναι να ενώσει τον άνθρωπο με τον Θεό. Είναι μέσο πνευματικής θεραπείας και ολοκλήρωση του πνευματικού ανθρώπου. Ο άνθρωπος, πριν την πτώση του, δεν είχε ανάγκη να διδαχθεί τρόπους προσευχής, γιατί η ίδια η ύπαρξη του ήταν ένωση Θεού και ανθρώπου. Μετά την πτώση του, που η θεοκοινωνία αυτή διασπάστηκε, η προσευχή καλλιεργήθηκε με διάφορους τρόπους. Τα παιδιά, τα νεότερα μέλη της οικογένειας αλλά και της κοινωνίας διδάσκονται την προσευχή, πρωτίστως από το παράδειγμα των γονιών τους και την ενάρετη ζωή τους. Την διαπαιδαγώγησή τους έρχεται να την συμπληρώσουν κι άλλοι φορείς όπως το σχολείο και το κατηχητικό.
description: Prayer and its cultivation since childhood through the angle of Orthodox Christian pedagogy. Prayer is a spiritual experience. God Himself taught how Christians should pray. The Church perceives prayer aw an embrace with the sole purpose of uniting Man with God. It’s a means of spiritual healing and the fulfillment of the spiritual man. Children, the family’s and society’s youngest members, are taught how to pray first and foremost by their parents’ example and virtuous way of life. Their edification is supplemented by school and Sunday school.
Switching dynamics of surface stabilized ferroelectric liquid crystal cells: effects of anchoring energy asymmetry
Creators: name: Kiselev, Alexei D.
name: Chigrinov, Vladimir G.
name: Pozhidaev, Eugene P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study both theoretically and experimentally switching dynamics in surface stabilized ferroelectric liquid crystal cells with asymmetric boundary conditions. In these cells the bounding surfaces are treated differently to produce asymmetry in their anchoring properties. Our electro-optic measurements of the switching voltage thresholds that are determined by the peaks of the reversal polarization current reveal the frequency dependent shift of the hysteresis loop. We examine the predictions of the uniform dynamical model with the anchoring energy taken into account. It is found that the asymmetry effects are dominated by the polar contribution to the anchoring energy. Frequency dependence of the voltage thresholds is studied by analyzing the properties of time-periodic solutions to the dynamical equation (cycles). For this purpose, we apply the method that uses the parameterized half-period mappings for the approximate model and relate the cycles to the fixed points of the composition of two half-period mappings. The cycles are found to be unstable and can only be formed when the driving frequency is lower than its critical value. The polar anchoring parameter is estimated by making a comparison between the results of modelling and the experimental data for the shift vs frequency curve. For a double-well potential considered as a deformation of the Rapini-Papoular potential, the branch of stable cycles emerges in the low frequency region separated by the gap from the high frequency interval for unstable cycles.
description: 35 pages, 15 figures
Transverse transport of solutes between co-flowing pressure-driven streams for microfluidic studies of diffusion/reaction processes
Creators: name: Salmon, Jean-Baptiste
name: Ajdari, Armand
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider a situation commonly encountered in microfluidics: two streams of miscible liquids are brought at a junction to flow side by side within a microchannel, allowing solutes to diffuse from one stream to the other and possibly react. We focus on two model problems: (i) the transverse transport of a single solute from a stream into the adjacent one, (ii) the transport of the product of a diffusion-controlled chemical reaction between solutes originating from the two streams. Our description is made general through a non-dimensionalized formulation that incorporates both the parabolic Poiseuille velocity profile along the channel and thermal diffusion in the transverse direction. Numerical analysis over a wide range of the streamwise coordinate $x$ reveal different regimes. Close to the top and the bottom walls of the microchannel, the extent of the diffusive zone follows three distinct power law regimes as $x$ is increased, characterized respectively by the exponents 1/2, 1/3 and 1/2. Simple analytical arguments are proposed to account for these results.
Unconventional superconductivity mediated solely by isotropic electron-phonon interaction
Creators: name: Schrodi, Fabian
name: Oppeneer, Peter M.
name: Aperis, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Unconventional superconductivity is commonly linked to electronic pairing mechanisms, since it is believed that the conventional electron-phonon interaction (EPI) cannot cause sign-changing superconducting gap symmetries. Here, we show that this common understanding needs to be revised when one considers a more elaborate theory of electron-phonon superconductivity beyond standard approximations. We selfconsistently solve the full-bandwidth, anisotropic Eliashberg equations including vertex corrections beyond Migdal's approximation assuming the usual isotropic EPI for cuprate, Fe-based and heavy-fermion superconductors with nested Fermi surfaces. In case of the high-$T_c$ cuprates we find a $d$-wave order parameter, as well as a nematic state upon increased doping. For Fe-based superconductors, we obtain $s_{\pm}$ gap symmetry, while for heavy-fermion CeCoIn$_5$ we find unconventional $d$-wave pairing. These results provide a proof-of-concept that EPI cannot be excluded as a mediator of unconventional and of high-$T_c$ superconductivity.
Generalization capabilities of translationally equivariant neural networks
Creators: name: Bulusu, Srinath
name: Favoni, Matteo
name: Ipp, Andreas
name: Müller, David I.
name: Schuh, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Machine Learning (cs.LG)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The rising adoption of machine learning in high energy physics and lattice field theory necessitates the re-evaluation of common methods that are widely used in computer vision, which, when applied to problems in physics, can lead to significant drawbacks in terms of performance and generalizability. One particular example for this is the use of neural network architectures that do not reflect the underlying symmetries of the given physical problem. In this work, we focus on complex scalar field theory on a two-dimensional lattice and investigate the benefits of using group equivariant convolutional neural network architectures based on the translation group. For a meaningful comparison, we conduct a systematic search for equivariant and non-equivariant neural network architectures and apply them to various regression and classification tasks. We demonstrate that in most of these tasks our best equivariant architectures can perform and generalize significantly better than their non-equivariant counterparts, which applies not only to physical parameters beyond those represented in the training set, but also to different lattice sizes.
description: 28 pages, 20 figures, v3: equivalent to the version published in PRD
Boundary layers in weak solutions to hyperbolic conservation laws
Creators: name: Joseph, K. T.
name: LeFloch, Philippe G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M12; 35L65

description: This paper is concerned with the initial-boundary value problem for a nonlinear hyperbolic system of conservation laws. We study the boundary layers that may arise in approximations of entropy discontinuous solutions. We consider both the vanishing viscosity method and finite difference schemes (Lax-Friedrichs type schemes, Godunov scheme). We demonstrate that different regularization methods generate different boundary layers. Hence, the boundary condition can be formulated only if an approximation scheme is selected first. Assuming solely uniform L\infty bounds on the approximate solutions and so dealing with L\infty solutions, we derive several entropy inequalities satisfied by the boundary layer in each case under consideration. A Young measure is introduced to describe the boundary trace. When a uniform bound on the total variation is available, the boundary Young measure reduces to a Dirac mass. Form the above analysis, we deduce several formulations for the boundary condition which apply whether the boundary is characteristic or not. Each formulation is based a set of admissible boundary values, following Dubois and LeFloch's terminology in ``Boundary conditions for nonlinear hyperbolic systems of conservation laws'', J. Diff. Equa. 71 (1988), 93--122. The local structure of those sets and the well-posedness of the corresponding initial-boundary value problem are investigated. The results are illustrated with convex and nonconvex conservation laws and examples from continuum mechanics.
description: 43 pages
BiblioDAP: The 1st Workshop on Bibliographic Data Analysis and Processing
Creators: name: Boukhers, Zeyd
name: Mayr, Philipp
name: Peroni, Silvio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Automatic processing of bibliographic data becomes very important in digital libraries, data science and machine learning due to its importance in keeping pace with the significant increase of published papers every year from one side and to the inherent challenges from the other side. This processing has several aspects including but not limited to I) Automatic extraction of references from PDF documents, II) Building an accurate citation graph, III) Author name disambiguation, etc. Bibliographic data is heterogeneous by nature and occurs in both structured (e.g. citation graph) and unstructured (e.g. publications) formats. Therefore, it requires data science and machine learning techniques to be processed and analysed. Here we introduce BiblioDAP'21: The 1st Workshop on Bibliographic Data Analysis and Processing.
description: This workshop will be held in conjunction with KDD' 2021
Production of cold fragments in nucleus-nucleus collisions in the Fermi-energy domain
Creators: name: Veselsky, M.
name: Souliotis, G. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The reaction mechanism of nucleus-nucleus collisions at projectile energies around the Fermi energy is investigated with emphasis on the production of fragmentation-like residues. The results of simulations are compared to experimental mass distributions of elements with Z = 21 - 29 observed in the reactions 86Kr+124,112Sn at 25 AMeV. The model of incomplete fusion is modified and a component of excitation energy of the cold fragment dependent on isospin asymmetry is introduced. The modifications in the model of incomplete fusion appear consistent with both overall model framework and available experimental data. A prediction is provided for the production of very neutron-rich nuclei using a secondary beam of 132Sn where e.g. the reaction 132Sn+238U at 28 AMeV appears as a possible alternative to the use of fragmentation reactions at higher energies.
description: LaTeX, 15 pages, 5 figures, minor modifications, accepted for publication in Nuclear Physics A
Additional file 1 of Deep-learning-based analysis of preoperative MRI predicts microvascular invasion and outcome in hepatocellular carcinoma
Creators: name: Sun, Bao-Ye
name: Gu, Pei-Yi
name: Guan, Ruo-Yu
name: Zhou, Cheng
name: Lu, Jian-Wei
name: Yang, Zhang-Fu
name: Pan, Chao
name: Zhou, Pei-Yun
name: Zhu, Ya-Ping
name: Li, Jia-Rui
name: Wang, Zhu-Tao
name: Gao, Shan-Shan
name: Gan, Wei
name: Yi, Yong
name: Luo, Ye
name: Qiu, Shuang-Jian
Publisher: name: figshare
Year: 2022
Subjects: Space Science
Medicine
Biotechnology
Biological Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified
Marine Biology
Cancer

description: Additional file 1: Supplemental Table 1. Imaging parameters.
Statistical mechanics of interacting fiber bundles
Creators: name: Toussaint, Renaud
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Classical Physics (physics.class-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We consider quasistatic fiber bundle models with interactions. Classical load sharing rules are considered, i.e. local, global or decaying as a power-law of distance. All fibers are identically elastic, initially intact, and break at a random threshold picked from a quenched disorder (q.d.) distribution. We are interested in the probability distribution of configurations of broken fibers at a given elongation, averaged over all possible realizations of the underlying q.d.. This distribution is accessed by mapping the threshold set space onto the configurational space, each path corresponding to the evolution of a bundle corresponding to a realized q.d.. Using a perturbative approach allows to obtain this distribution to leading order in the interactions. This maps this system onto classical statistical mechanics models, i.e. percolation, standard or generalized Ising models depending on the range of the interactions chosen in the load sharing rule. This relates such q.d. based systems to standard classical mechanics, which allows to derive observables of the system, as e.g. correlation lengths. The thermodynamic parameters formally equivalent to temperature and chemical potential, are functions of the externally imposed deformation, depending on the load sharing rule and the choice of the q.d. distribution.
Τα μέτρα δικονομικού καταναγκασμού στον Κώδικα Ποινικής Δικονομίας και ιδίως η προσωρινή κράτηση του κατηγορουμένου
Creators: name: Μαρκογιαννάκης, Γεώργιος Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Μέτρα δικονομικού καταναγκασμού
Προσωρινή κράτηση
Ποινική δικονομία
Procedural coercion measures
Provisional detention
Penal procedure

description: Αντικείμενο της εργασίας αποτελεί η μελέτη της υπάρχουσας επιστημονικής βιβλιογραφίας και αρθρογραφίας σχετικά με τα μέτρα δικονομικού καταναγκασμού που προβλέπονται στον Κώδικα Ποινικής Δικονομίας, καθώς και η επισκόπηση των σχετικών κρίσεων της ελληνικής νομολογίας και της νομολογίας του Ευρωπαϊκού Δικαστηρίου Δικαιωμάτων του Ανθρώπου. Ιδιαίτερη έμφαση δόθηκε στα ζητήματα που αφορούν στην προσωρινή κράτηση του κατηγορούμενου, δοθέντος ότι αυτή αποτελεί το επαχθέστερο μέτρο δικονομικού καταναγκασμού που δύναται να επιβληθεί στον κατηγορούμενο. Βασικοί άξονες της εργασίας, μεταξύ άλλων, αποτελούν οι προϋποθέσεις επιβολής των μέτρων δικονομικού καταναγκασμού, η διάρκειά τους και ο έλεγχος αυτής, οι δυνατότητες άμυνας του κατηγορουμένου, η σχέση των μέτρων δικονομικού καταναγκασμού με την αρχή της αναλογικότητας και το τεκμήριο αθωότητας του κατηγορουμένου, καθώς και η ανάλυση των μέτρων δικονομικού καταναγκασμού υπό το πρίσμα των προβλέψεων του άρθρου 5 της Ευρωπαϊκής Σύμβασης Δικαιωμάτων του Ανθρώπου
description: The purpose of the thesis is to examine the current scientific literature and articles regarding the procedural coercion measures included in the Greek Penal Procedure Code, as well as to overview the relevant case-law of Greek Courts and of the European Court of Human Rights. The thesis particularly focuses on issues regarding the provisional detention of the defendant, given that it is the most burdensome procedural coercion measure that may be imposed on the defendant. The basic points of the thesis have to do with the conditions of imposition of procedural coercion measures, their duration and its monitoring, the defendant’s defensive capabilities, the connection between procedural coercion measures and the principle of proportionality and the presumption of innocence of the defendant, as well as the examination of procedural coercion measures on the basis of article 5 of the European Convention on Human Rights.
Το δικαίωμα στη λήθη στην έννομη τάξη της Ευρωπαϊκής Ένωσης
Creators: name: Σιουτοπούλου, Κωνσταντίνα Στέργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Δικαίωμα στη λήθη
Προσωπικά δεδομένα
Κανονισμός Προστασίας Προσωπικών Δεδομένων, Δικαστήριο της Ευρωπαϊκής Ένωσης
The right to be forgotten
Personal Data
General Data Protection Regulation, Court of Justice of the European Union

description: Σκοπός της διατριβής ήταν η μελέτη του δικαιώματος στη λήθη, όπως αυτό διαμορφώθηκε με την πάροδο των χρόνων και την εξέλιξη της τεχνολογίας στο δίκαιο της Ευρωπαϊκής Ένωσης. Αρχικά, παρουσιάστηκε το νομικό πλαίσιο στο οποίο βασίστηκε η θέσπιση του εν λόγω δικαιώματος, η έννοια και η θεμελίωσή του τόσο στο δίκαιο της Ευρωπαϊκής Ένωσης όσο και στα επιμέρους εθνικά δίκαια των κρατών μελών. Στη συνέχεια, παρουσιάστηκε και σχολιάστηκε η απόφαση του Δικαστηρίου της Ευρωπαϊκής Ένωσης (C-131/12, Google Spain SL and Google Inc v. AEPD and Mario Costeja González) αναφορικά με το δικαίωμα στη λήθη, η πρώτη απόφαση που το Δικαστήριο της Ευρωπαϊκής Ένωσης αναγνώρισε το δικαίωμα στη λήθη. Τέλος, παρουσιάσαμε το δικαίωμα στη λήθη σύμφωνα με τον Κανονισμό Προστασίας Προσωπικών Δεδομένων 2016/679, με απώτερο στόχο να εξακριβωθεί αν ο νομοθέτης της Ευρωπαϊκής Ένωσης και το Δικαστήριο της Ευρωπαϊκής Ένωσης θεμελίωσαν ένα δικαίωμα στη λήθη ικανό να προστατέψει αποτελεσματικά το υποκείμενο των προσωπικών δεδομένων
description: The aim of the present thesis was the study of the right to erasure or the right to be forgotten and its formulation in the European Union’s law. In the beginning we analyzed the legal field in which the right to erasure was introduced, both in the European Union’s law and in member states’ national legislation. We also examined the Judgment of the Court of Justice of the European Union about the right to be forgotten (C-131/12, Google Spain SL and Google Inc v. AEPD and Mario Costeja González). This judgment was the reason why the CJEU recognized the importance of the right to be forgotten for the first time. Finally, we study in detail the General Data Protection Regulation 2016/679 and specifically the right to erasure in order to realize if the European Union’s legislator and the CJEU have enacted a right capable enough to protect the data subject
CMIP: Clone Mobile-agent Itinerary Planning Approach for Enhancing Event-to-Sink Throughput in Wireless Sensor Networks
Creators: name: Qadori, Huthiafa Q
name: Zukarnain, Zuriati Ahmad
name: Hanapi, Zurina Mohd
name: Subramaniam, Shamala
name: Alrshah, Mohamed A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In order to mitigate the problem of data congestion, increased latency, and high energy consumption in Wireless Sensor Networks (WSNs), Mobile Agent (MA) has been proven to be a viable alternative to the traditional client-server data gathering model. MA has the ability to migrate among network nodes based on an assigned itinerary, which can be formed via Single Itinerary Planning (SIP) or Multiple Itinerary Planning (MIP). MIP-based data gathering approach solves problems associated with SIP in terms of task duration, energy consumption, and reliability. However, the majority of existing MIP approaches focus only on reducing energy consumption and task duration, while the Event-to-sink throughput has not been considered. In this paper, a Clone Mobile-agent Itinerary Planning approach (CMIP) is proposed to reduce task duration while improving the Event-to-sink throughput in real-time applications, especially when the MA is assigned to visit a large number of source nodes. Simulation results show that the CMIP approach outperforms both Central Location-based MIP (CL-MIP) and Greatest Information in Greatest Memory-based MIP (GIGM-MIP) in terms of reducing task duration by about 56% and 16%, respectively. Furthermore, CMIP improves the Event-to-sink throughput by about 93% and 22% as compared to both CL-MIP and GIGM-MIP approaches, respectively.
description: 11 pages
Resolution of Curvature Singularities in Higher Derivative Gravity
Creators: name: Loewenfeld, Philipp Höffer v.
name: Sachs, Ivo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider possible resolutions of singularities in a contracting anisotropic universe for a class of higher derivative gravity theories. We give evidence that for our models the big crunch singularity may be replaced by a nearly flat Minkowski-like phase before the Universe reenters an anisotropic expansion in a time-symmetric manner.
description: 7 pages, 4 EPS figures; typos corrected, references added; to be published in Phys. Rev. D
Boundary Layers of Accretion Disks: Discovery of Vortex-Driven Modes and Other Waves
Creators: name: Coleman, Matthew S. B.
name: Rafikov, Roman R.
name: Philippov, Alexander A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Disk accretion onto weakly magnetized objects possessing a material surface must proceed via the so-called boundary layer (BL) - a region at the inner edge of the disk, in which the velocity of accreting material abruptly decreases from its Keplerian value. Supersonic shear arising in the BL is known to be conducive to excitation of acoustic waves that propagate into both the accretor and the disk, enabling angular momentum and mass transport across the BL. We carry out a numerical exploration of different wave modes that operate near the BL, focusing on their morphological characteristics in the innermost parts of accretion disk. Using a large suite of simulations covering a broad range of Mach numbers (of the supersonic shear flow in the BL), we provide accurate characterization of the different types of modes, verifying their properties against analytical results, when available. We discover new types of modes, in particular, global spiral density waves launched by vortices forming in the disk near the BL as a result of the Rossby wave instability; this instability is triggered by the vortensity production in that region caused by the nonlinear damping of acoustic waves. Azimuthal wavenumbers of the dominant modes that we observe appear to increase monotonically with the Mach number of the runs, but a particular mix of modes found in a simulation is mildly stochastic. Our results provide a basis for better understanding of the angular momentum and mass transport across the BL as well as the emission variability in accreting objects.
description: 25 pages, 16 figures, changed title and reorganized structure, replaced to match the version accepted by MNRAS
D2.1: Analysis of the OSTrails Interoperability Framework Tools Compliance
Creators: name: Suchánek, Marek
name: Martínková, Jana
name: Wilkinson, Mark
name: Garijo, Daniel
name: Miksa, Tomasz
name: Manghi, Paolo
name: Dyume, Renaud
name: Rey Mazón, Miguel
name: Moilanen, Katja
name: Heinonen, Matti
name: Broeder, Daan
name: Spichtinger, Daniel
name: Windhouwer, Menzo
name: Príncipe, Pedro
name: Vodopijevec, Alen
name: Macan, Bojan
name: Steinhoff, Wilko
name: Priddy, Mike
name: Kontopidi, Maria
Publisher: name: Zenodo
Year: 2024
Subjects: interoperability
EOSC
data management plans
knowledge graphs
FAIR assessment

description: This deliverable evaluates the compliance of 38 tools, including DMP platforms, SKGs, FAIR assessment tools, CRIS, and repositories, with the OSTrails Pathways and Interoperability Framework, identifying key technologies and gaps, and aligning with emerging standards, based on a systematic per-tool analysis.
Εγκληματολογική Προσέγγιση των Ρατσιστικών Εγκλημάτων
Creators: name: Παπαθανασίου, Αννα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ρατσιστικό Έγκλημα
Εγκλημα Μίσους
Ρατσισικός Λόγος
Ρητορική Μίσους
Bias Crime
Hate Crime
Racist Discourse
Hate Speech

description: Αντικείμενο μελέτης της παρούσας εργασίας αποτελεί η εγκληματολογική προσέγγιση της φύσης και της διάστασης των ρατσιστικών εγκλημάτων, καθώς και των ζητημάτων που αφορούν την ποινικοποίησής τους. Στο πρώτο κεφάλαιο επιχειρείται η οριοθέτηση της έννοιας του ρατσιστικού εγκλήματος και ο προσδιορισμός των ιδιαίτερων χαρακτηριστικών του, ενώ στη συνέχεια παρατίθεται το προφίλ του δράστη και του θύματος. Στο δεύτερο κεφάλαιο επιχειρείται μια ψυχοκοινωνική προσέγγιση των ρατσιστικών εγκλημάτων, μέσα από τη θεωρία της αυταρχικής προσωπικότητας και των γνωστικών σταδίων της προκατάληψης, ενώ το τρίτο κεφάλαιο αφορά την ποινική αντιμετώπιση των ρατσιστικών εγκλημάτων. Για το σκοπό αυτό, παρατίθεται η ανασκόπηση του διεθνούς και ευρωπαϊκού νομοθετικού πλαισίου που διέπουν το ρατσιστικό έγκλημα, καθώς και η υποχρέωση διερεύνησης των ρατσιστικών κινήτρων του δράστη από τις αρχές, όπως προκύπτει από την Επιτροπή για την Εξάλειψη των Φυλετικών Διακρίσεων του Ο.Η.Ε. και από τη νομολογία του ΕΔΔΑ. Στη συνέχεια, αναλύεται το θεσμικό πλαίσιο για την καταπολέμηση των ρατσιστικών εγκλημάτων στην Ελλάδα, μετά την τελευταία νομοθετική τροποποίηση, καθώς και τα ειδικότερα ζητήματα που ανάγονται στο πεδίο της ποινικοποίησης των εν λόγω εγκλημάτων. Τέλος, στο τέταρτο κεφάλαιο, αναλύεται το καθεστώς ποινικοποίησης του ρατσιστικού λόγου, υπό το πρίσμα της αντιστάθμισής του με το θεμελιώδες δικαίωμα της ελευθερίας στην έκφραση, όπως προκύπτει από την ελληνική νομολογία και τη νομολογία του ΕΔΔΑ
description: The purpose of this thesis is to examine the forensic nature and dimension of racist crimes, as well as the issues related to their criminalization. The first chapter attempts to delineate the semantics of racist crime and to identify its particular characteristics, while consequently, it attempts to list the profile of the perpetrator and the victim. The second chapter attempts a psychosocial approach to racist crimes, through the theory of authoritarian personality and cognitive stages of prejudice, while the third chapter deals with the criminal treatment of racist crimes. To this end, the international and European framework for racist crime, as well as the obligation to investigate the perpetrator's racist motives, are outlined in the UN Committee on the Elimination of Racial Discrimination and ECHR case law. The following is an analysis of the legal status of racist crimes in Greece, after its last amendment, as well as the specific issues related to the criminalization of these crimes. Finally, the fourth chapter deals with the criminalization of racist discourse in the light of its compensation for the fundamental right to freedom of expression, as it is presented by the Greek and ECHR case law.
A Real time simulator for power electric networks
Creators: name: Linares-Rojas, Luis R.
Publisher: name: University of British Columbia
Year: 2008

description: The main task of a real-time power network simulator on an off-the-shelf hardware platform, the IBM RISC System/6000 model 560 machine, is presented. Simplified models, based on those used in the EMIT, are included for the network elements: lumped resistors, capacitors, inductors and constant distributed parameter transmission lines. Fast nonlinear models are used for current and potential transformers. New fast modelling schemes for switching operations are introduced. A very flexible, portable, and efficient algorithm, which takes advantage of the decoupling due to the signals time delay between sections of a power network separated by transmission lines, is introduced.
Quantum Magnetism and Superconductivity
Creators: name: Buyers, William J. L.
name: Yamani, Zahra
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The spin of the neutron allows neutron scattering to reveal the magnetic structure and dynamics of materials over nanometre length scales and picosecond timescales. Neutron scattering is particularly in demand in order to understand high-temperature superconductors, which lie close to magnetically ordered phases, and highly correlated metals with giant effective fermion masses, which lie close to magnetic order or pass through a mysterious phase of hidden order before becoming superconducting. Neutron scattering also is the probe of choice for revealing new phases of matter and new particles, as seen in the surprising behaviour of quantum spin chains and ladders where mass gaps and excited triplons replace conventional spin waves. Examples are given of quantum phenomena where neutron scattering has played a defining role that challenges current understanding of condensed matter.
description: 8 pages 12 figures. A review of neutron scattering research at Chalk River Laboratories on quantum spin systems
Review on QoS provisioning approaches for supporting video traffic in IEEE802.11e: challenges and issues
Creators: name: Al-Maqri, Mohammed A.
name: Alrshah, Mohamed A.
name: Othman, Mohamed
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Recently, the demand for multimedia applications is dramatically increased, which in turn increases the portion of video traffic on the Internet. The video streams, which require stringent Quality of Service (QoS), are expected to occupy more than two-thirds of web traffic by 2019. IEEE802.11e has introduced HCF Controlled Channel Access (HCCA) to provide QoS for delay-sensitive applications including highly compressed video streams. However, IEEE802.11e performance is hindered by the dynamic nature of Variable Bit Rate (VBR) video streams in which packet size and interval time are rapidly fluctuating during the traffic lifetime. In order to make IEEE802.11e able to accommodate with the irregularity of VBR video traffic, many approaches have been used in the literature. In this article, we highlight and discuss the QoS challenges in IEEE802.11e. Then, we classify the existing QoS approaches in IEEE802.11e and we also discuss the selection of recent promising and interesting enhancements of HCCA. Eventually, a set of open research issues and potential future directions is presented.
description: 19 pages
Broadband Imaging to Study the Spectral Distribution of Meteor Radio Afterglows
Creators: name: Varghese, S. S.
name: Dowell, J.
name: Obenberger, K. S.
name: Taylor, G. B.
name: Malins, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present observations of 86 meteor radio afterglows (MRAs) using the new broadband imager at the Long Wavelength Array Sevilleta (LWA-SV) station. The MRAs were detected using the all-sky images with a bandwidth up to 20 MHz. We fit the spectra with both a power law and a log-normal function. When fit with a power law, the spectra varied from flat to steep and the derived spectral index distribution from the fit peaked at -1.73. When fit with a log-normal function, the spectra exhibits turnovers at frequencies between 30-40 MHz, and appear to be a better functional fit to the spectra. We compared the spectral parameters from the two fitting methods with the physical properties of MRAs. We observe a weak correlation between the log-normal turnover frequency and the altitude of MRAs. The spectral indices from the power law fit do not show any strong correlations with the physical properties of MRAs. However, the full width half maximum (FWHM) duration of MRAs is correlated with the local time, incidence angle, luminosity and optically derived kinetic energy of parent meteoroid. Also, the average luminosity of MRAs seems to be correlated with the kinetic energy of parent meteoroid and the altitude at which they occur.
description: 22 pages, 11 figures
Quarkonium production via recombination
Creators: name: Thews, R. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The contrast between model predictions for the transverse momentum spectra of J/Psi observed in Au-Au collisions at RHIC is extended to include effects of nuclear absorption. We find that the difference between initial production and recombination is enhanced in the most central collisions. Models utilizing a combination of these sources may eventually be able to place constraints on their relative magnitudes.
description: Based on invited plenary talk at the 2nd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, Asilomar, CA, June 9-16, 2006, to be published in Nucl. Phys. A