cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Microwave sintering of complex shapes: From multiphysics simulation to improvements of process scalability
Creators: name: Manière, Charles
name: Chan, Shirley
name: Olevsky, Eugene A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The microwave sintering homogeneity of large and complex shape specimens is analyzed. A new approach enabling the fabrication of complex shapes ceramics via 3D printing and microwave sintering is presented. The use of a dental microwave cavity is shown to enable a substantial level of densification of complex shape components while restricting the grain growth. The homogeneity of the processed samples during microwave sintering is studied by an electromagnetic-thermal-mechanical simulation. The realistic densification behavior, that phenomenologically takes into account the microwave effect, is included in the modeling framework. The simulation indicates the sharp correlation between the microwave field distribution in the cavity, the temperature profile, and the specimen's shape distortion.
An adaptive mesh, GPU-accelerated, and error minimized special relativistic hydrodynamics code
Creators: name: Tseng, Po-Hsun
name: Schive, Hsi-Yu
name: Chiueh, Tzihong
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a new special relativistic hydrodynamics (SRHD) code capable of handling coexisting ultra-relativistically hot and non-relativistically cold gases. We achieve this by designing a new algorithm for conversion between primitive and conserved variables in the SRHD solver, which incorporates a realistic ideal-gas equation of state covering both the relativistic and non-relativistic regimes. The code can handle problems involving a Lorentz factor as high as $10^6$ and optimally avoid the catastrophic cancellation. In addition, we have integrated this new SRHD solver into the code GAMER (https://github.com/gamer-project/gamer) to support adaptive mesh refinement and hybrid OpenMP/MPI/GPU parallelization. It achieves a peak performance of $7\times 10^{7}$ cell updates per second on a single Tesla P100 GPU and scales well to 2048 GPUs. We apply this code to two interesting astrophysical applications: (a) an asymmetric explosion source on the relativistic blast wave and (b) the flow acceleration and limb-brightening of relativistic jets.
title: Die Sprache als "Werkstück"
title: Überlegungen zu Elfriede Jelineks poetologischem Konzept am Beispiel des Theaterstücks ‚Stecken, Stab und Stangl‘ (1996)
titleType: Subtitle
Creators: name: Mariacher, Barbara
Publisher: name: Germanistisches Institut (Universität Münster)
Year: 2012
Subjects: 800 Literatur, Rhetorik, Literaturwissenschaft

description: In ihrem Beitrag befasst sich die Autorin mit Elfriede Jelineks poetologischem Konzept, das sie am Beispiel des Theaterstücks »Stecken, Stab und Stangl« (1996) diskutiert. Dabei geht es nach einer kurzen inhaltlichen und zeitgeschichtlichen Einführung um die Auffassung von Sprache und Text sowie Autor und Werk, die unter theoretischem Rückbezug auf Roland Barthes in den Blick genommen wird. Im Zentrum der Betrachtung stehen das ideologiekritische Potential, durch das sich Jelineks Verfahren auszeichnet, und die Rolle des Rezipienten, von dem eine aktive Rezeptionshaltung eingefordert wird.
Domain Adaptation by Topology Regularization
Creators: name: Weeks, Deborah
name: Rivera, Samuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep learning has become the leading approach to assisted target recognition. While these methods typically require large amounts of labeled training data, domain adaptation (DA) or transfer learning (TL) enables these algorithms to transfer knowledge from a labelled (source) data set to an unlabelled but related (target) data set of interest. DA enables networks to overcome the distribution mismatch between the source and target that leads to poor generalization in the target domain. DA techniques align these distributions by minimizing a divergence measurement between source and target, making the transfer of knowledge from source to target possible. While these algorithms have advanced significantly in recent years, most do not explicitly leverage global data manifold structure in aligning the source and target. We propose to leverage global data structure by applying a topological data analysis (TDA) technique called persistent homology to TL. In this paper, we examine the use of persistent homology in a domain adversarial (DAd) convolutional neural network (CNN) architecture. The experiments show that aligning persistence alone is insufficient for transfer, but must be considered along with the lifetimes of the topological singularities. In addition, we found that longer lifetimes indicate robust discriminative features and more favorable structure in data. We found that existing divergence minimization based approaches to DA improve the topological structure, as indicated over a baseline without these regularization techniques. We hope these experiments highlight how topological structure can be leveraged to boost performance in TL tasks.
title: Überleben & Überschreiten vs. Überlesen & Überschreiben
title: Die heteronormative Ordnung des queeren Diskurses
titleType: Subtitle
Creators: name: Schulz, Dirk
Publisher: name: Germanistisches Institut (Universität Münster)
Year: 2012
Subjects: 800 Literatur, Rhetorik, Literaturwissenschaft

description: Sowohl im akademischen als auch im populären Gebrauch wird ›queer‹ infolge des fortwährenden Überschreibens und Überlesens bewusst ambivalenter Textgestaltungen schon seit einiger Zeit nicht mehr abgrenzend zu den häufig analog gebrauchten Termini ‚gay/lesbian‘ oder ‚homosexual‘ verstanden. Beispielhaft für diese Heteronormativierung ist der Umgang mit Oscar Wildes ‚The Picture of Dorian Gray‘ und ‚Mrs. Dalloway von Virginia Woolf. Ihre genuin queere Verweigerung einer definierenden und kategorisierenden Denk- und Schreibweise findet bislang weder in der kritischen Rezeption noch in ihren Adaptionen der Milleniumswende ihre angemessene Korrespondenz. Im Gegenteil, das Beharren beider Erzählungen auf Uneindeutigkeit als Überlebensprinzip wird als ›Pose‹ bzw. ›Verschleierungstaktik‹ verstanden, wobei autobiographische Bezüge der Autor_innen vorherrschen. Auf diese Weise werden die subversiven Erzählstrategien beider Texte in eine heteronormative Ordnung überführbar.
An implicit numerical algorithm for solving the general relativistic hydrodynamical equations around accreting compact objects
Creators: name: Hujeirat, Ahmad
name: Camenzind, Max
name: Keil, Bernhard W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An implicit algorithm for solving the equations of general relativistic hydrodynamics in conservative form in three-dimensional axi-symmetry is presented. This algorithm is a direct extension of the pseudo-Newtonian implicit radiative magnetohydrodynamical solver -IRMHD- into the general relativistic regime. We adopt the Boyer-Lindquist coordinates and formulate the hydrodynamical equations in the fixed background of a Kerr black hole. The set of equations are solved implicitly using the hierarchical solution scenario (HSS). The HSS is efficient, robust and enables the use of a variety of solution procedures that range from a purely explicit up to fully implicit schemes. The discretization of the HD-equations is based on the finite volume formulation and the defect-correction iteration strategy for recovering higher order spatial and temporal accuracies. Depending on the astrophysical problem, a variety of relaxation methods can be applied. In particular the vectorized black-white Line-Gauss-Seidel relaxation method is most suitable for modeling accretion flows with shocks, whereas the Approximate Factorization Method is for weakly compressible flows. The results of several test calculations that verify the accuracy and robustness of the algorithm are shown. Extending the algorithm to enable solving the non-ideal MHD equations in the general relativistic regime is the subject of our ongoing research.
description: 30 pages, 8 figures, to be published in New Astronomy
Elicitation of vocabulary from the Hupa Language Dictionary
Creators: name: Parker, Verdena
name: Campbell, Amy
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-300307-15: Elicitation of vocabulary from the Hupa Language Dictionary. English headwords 'feel' to 'finally'.
Projekt BigBird XL - Modellbildung und Simulation eines unbemannten Ornithopters mit Biegetorsionsantrieb
Creators: name: Dobrev, Yavor Ivanchev
name: Moormann, Dieter
Publisher: name: RWTH Aachen University
Year: 2019
Subjects: ornithopter;simulation;modelling;flapping wing;

description: Deutscher Luft- und Raumfahrtkongress 2018, DLRK2018, Friedrichshafen, Germany, 4 Sep 2018 - 6 Sep 2018; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. (2019). doi:10.25967/480200
description: Published by Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
Studies of the effects of the amplitude and phase of the RF potential on the trapping process in laser desorption quadrupole ion trap mass spectrometry
Creators: name: Robb, Damon Bradley
Publisher: name: University of British Columbia
Year: 2009

description: The thesis is concerned with elucidating the mechanism by which ions are contained by the quadrupole field in laser desorption ion trap mass spectrometry (LD-ITMS). In the past, the process by which ions are trapped has been poorly understood. The several models that have been proposed to explain the dependence of trapping efficiency on the amplitude (q[sub z]) and phase of the RF potential are inconsistent with each other. Previous experimental studies of the trapping process have been hindered by poor reproducibility in the ion production from standard laser desorption samples. A new sample type, electrodeposited polythiophene films, has been developed to resolve this problem. These films have been shown to be capable of providing consistent ion production over many thousands of laser shots. Reliable data have been acquired for the first time showing the dependence of mass spectral signal intensity on phase and qz. The signal intensity for laser desorbed molecular ions was found to be inversely related to q[sub z]. Contrary to previous assertions, this trend is not due to the inability of desorbed ions to penetrate a static "potential barrier" that has a magnitude proportional to q[sub z]. Rather, experimental evidence indicates that collision activated dissociation at high RF potentials is a dominant process that reduces the signal intensity from molecular ions, while increasing those of their lower mass fragments. New experimental data also demonstrate the dependence of LD-ITMS sensitivity on phase. The range of phases over which ions may be trapped, as well as the value of the optimum phase for trapping, depends on q[sub z] and the number of ions produced per laser shot. It is believed that these dependencies are related to the effects of Debye shielding, which are reduced if fewer ions are produced, or if q[sub z] is raised. Presently, it is impossible to determine a priori the optimum value of the phase angle for trapping ions, because the effects of Debye shielding will vary unpredictably over the course of an experiment. Computer simulations utilizing SIMION 6 were also undertaken, to gain further understanding of the experimental data.
Minutes of meeting of the Trustees of the Winfield & Okanagan Centre Irrigation District, March 1, 1948
Creators: name: Trustees Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of meeting of the Trustees of the Winfield & Okanagan Centre Irrigation District, dated March 1, 1948, regarding meeting with Mr. H. Howard.
Abbreviation Application (DHB2024)
Creators: name: Vandyck, Caroline
name: Kestemont, Mike
Publisher: name: Zenodo
Year: 2024
Subjects: DHBenelux
DHBenelux2024
SilentVoices
Herne
Stylochronometry
Stylometry
DigitalHumanities
Medieval
MiddleDutch
Scribes
Abbreviations

description: This repository contains our contribution to the conference Digital Humanities Benelux 2024, held from June 4-7 in Leuven. The materials available for download include our long paper abstract, presentation and code in Jupyter notebooks. This contribution is part of the research project “Silent voices: A Digital Study of the Herne Charterhouse as a Textual Community (ca. 1350-1400)”, funded by the Flemish Research Agency (Belgium) at the University of Antwerp. The project studies the evolution of the scribal culture in the Herne monastery through computational text analysis.

This study focuses on the Carthusian monastery of Herne, a significant cultural centre in the Middle Ages. In between 1350 and 1400, the monks at Herne produced an impressive number of production units — 46 in total, with 40 of them in the Middle Dutch vernacular. This case study focuses on the monastery's most prolific scribe, known as the Speculum Scribe. It has two primary objectives: first, to determine whether there was a convergence in scribal practices (such as the use of abbreviations) within the Herne community; and second, to assess the feasibility of chronologically ordering the works of the Speculum Scribe based on his use of abbreviations. The findings cautiously suggest a positive answer to the first objective, indicating that scribes at Herne did indeed learn from each other and developed convergent scribal practices. As for the second objective however, while a comprehensive chronological order of the Speculum Scribe’s works could not be established, the analysis did successfully identify his earliest work.
Numerical Modeling of the Radio Nebula from the 2004 December 27 Giant Flare of SGR 1806-20
Creators: name: Salmonson, Jay D.
name: Fragile, P. Chris
name: Anninos, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the relativistic hydrodynamics code Cosmos++ to model the evolution of the radio nebula triggered by the Dec. 27, 2004 giant flare event of soft gamma repeater 1806-20. We primarily focus on the rebrightening and centroid motion occurring subsequent to day 20 following the flare event. We model this period as a mildly relativistic (gamma ~ 1.07 - 1.67) jetted outflow expanding into the interstellar medium (ISM). We demonstrate that a jet with total energy ~ 10^46 ergs confined to a half opening angle ~ 20 degrees fits the key observables of this event, e.g. the flux lightcurve, emission map centroid position, and aspect ratio. In particular, we find excellent agreement with observations if the rebrightening is due to the jet, moving at 0.5c and inclined ~ 0 - 40 degrees toward the observer, colliding with a density discontinuity in the ISM at a radius of several 10^16 cm. We also find that a jet with a higher velocity, >~ 0.7c, and larger inclination, >~ 70 degrees, moving into a uniform ISM can fit the observations in general, but tends to miss the details of rebrightening. The latter, uniform ISM model predicts an ISM density more than 100 times lower than that of the former model, and thus suggests an independent test which might discriminate between the two. One of the strongest constraints of both models is that the data seems to require a non-uniform jet in order to be well fit.
description: Accepted to ApJ. 36 pages, 19 color figs. Please see http://home.comcast.net/~jdsalmonson/SGRmovies/SGRmoviemain.html for movies of simulations
Η εφαρμογή του κανονισμού της ΕΕ 1782/2003 στην ελληνική γεωργία:
Creators: name: Ιωαννίδου, Αικατερίνη Χαραλάμπους
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Κανονισμός της ΕΕ 1782/2003
Eu 1782/2003 regulation

description: Αντικείμενο της παρούσας μεταπτυχιακής εργασίας ήταν η παράθεση του βασικού κανονισμού του Συμβουλίου της ΕΕ 1782/2003, η παρουσίαση της νέας ΚΓΠ η οποία συνοδεύεται από την εισαγωγή του Καθεστώτος της Ενιαία Αποδεσμευμένη Ενίσχυση, της Πολλαπλής Συμμόρφωσης και της διαφοροποίησης.Επίσης μέσα στο πλαίσιο του αντικειμένου της εργασίας ήταν ο τρόπος εφαρμογής τόσο του κανονισμού της ΕΕ 1782/2003 όσο και των τροποποιήσεων του, στην πραγματικότητα της Ελληνικής γεωργίας με έτος αναφοράς το 2006, όπου η καινούργια κοινή ευρωπαϊκή γεωργική πολιτική, με κυρίαρχο στοιχείο την αποσύνδεση της επιδότησης από την παραγωγή, αλλάζει το τοπίο στην χώρα μας. Όπως ήταν αναμενόμενο η αναθεώρηση της ΚΓΠ είχε ως άμεση συνέπεια την εμφάνιση κάποιων αλλαγών στην Ελληνική γεωργία. Η καλλιεργήσιμη έκταση κάποιων βασικών προϊόντων της χώρας μας αλλάζει άλλοτε ριζικά και άλλοτε παραμένει σχεδόν αμετάβλητη από την εφαρμογή της καινούργιας ΚΓΠ.
description: Τhe object of this postgraduate study was the apposition of basic regulation of E.U. Council 1782/2003 and the presentation of new Common Agricultural Policy (CAP) which is accompanied by the activation of the Arrangement of United Released Aid, Multiple Conformity and differentiation.Moreover, in the frame of this project was the application of the EU 1782/2003 regulation, as well as its modifications, in the conditions of the agriculture in Greece setting 2006 as year report, where the new common European agricultural policy, with sovereign element the detachment of subsidy from the production, changes the landscape in our country.As it was expected the direct consequence of the revision of CAP is the appearance of certain changes in the Greek agriculture. The cultivable extent of certain basic products of the country changes either radically nor remains almost immutable from the application of new CAP.
Evolution of possible Weyl semimetal states across the hole-doping induced Mott transition in pyrochlore iridates
Creators: name: Ueda, Kentaro
name: Fukuda, Hikaru
name: Kaneko, Ryoma
name: Fujioka, Jun
name: Tokura, Yoshinori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study possible Weyl semimetals of strongly-correlated electrons by investigating magnetotransport properties in pyrochlore R2Ir2O7 (R=rare-earth ions), choosing three types of R ions to design the exchange coupling scheme between R 4f and Ir 5d moments; non-magnetic Eu (4f6), isotropic Gd (4f7), and anisotropic Tb (4f8). In the doping-induced semimetallic state, distinctive features of magnetoresistance and Hall effect are observed in R=Gd and Tb compounds due to the effects of the exchange-enhanced isotropic and anisotropic Zeeman fields, respectively, exemplifying the double Weyl semimetal and the 2-in 2-out line-node semimetal as predicted by theories. In particular, a Hall angle of R=Gd compound is strongly enhanced to 1.5 % near above the critical doping for the Mott transition. Furthermore, an unconventional Hall contribution is discerned for a lower doping regime of R=Gd compound, which can be ascribed to the emergence of Weyl points with the field-distorted all-in all-out order state. These findings indicate that the hole-doping induced Mott transition as well as the characteristic f-d exchange interaction stabilizes versatile topological semimetal states in a wide range of material parameter space.
description: 8 pages, 10 figures
title: "Der Fremde Blick" – "ein fremdes Auge"
title: Transmediale Inszenierung von Schrift und Bild in Herta Müllers Colagen
titleType: Subtitle
Creators: name: Hedayati-Aliabadi, Minu
Publisher: name: Germanistisches Institut (Universität Münster)
Year: 2012
Subjects: 800 Literatur, Rhetorik, Literaturwissenschaft

description: Der Artikel beschäftigt sich mit den in der Forschungsliteratur und der breiten Öffentlichkeit bisher kaum beachteten Bild-Text-Collagen Herta Müllers. Konkret erfolgt nach einer kurzen Einführung in Herta Müllers Werkcharakter und einer medialen und strukturellen Verortung der Bild-Text-Collagen eine Analyse der lyrischen und formalen Gestaltung des Textes, der medialen Inszenierung der Schriftelemente und der Bild-Text-Korrelationen am Beispiel der Bild-Text-Collagen des aktuellsten Collage-Bandes »Die blassen Herren mit den Mokkatassen« (2005). Die Strategie der Fremdheit, die Herta Müllers prosaische Werke durchziehen, erfährt in den Bild-Text-Collagen eine Zuspitzung und mediale Komponente.
Fast Dynamics in a Model Metallic Glass-forming Material
Creators: name: Zhang, Hao
name: Wang, Xinyi
name: Yu, Hai-Bin
name: Douglas, Jack F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the fast $β$- and Johari-Goldstein (JG) $β$-relaxation processes, along with the elastic scattering response of glass-forming (GF) liquids and the Boson peak, in a simulated Al-Sm GF material exhibiting a fragile-strong (FS) transition. These dynamical processes are universal in 'ordinary' GF fluids and collectively describe their 'fast dynamics', and we find these relaxation processes also arise in a GF liquid exhibiting a fragile-strong transition. String-like particle motion, having both an irreversible and reversible nature ('stringlets') component, occurs in the fast-dynamics regime, corresponding to a ps timescale. String-like collective motion associated with localized unstable modes facilitate irreversible and intermittent particle 'jumping' events at long times associated with the JG $β$-relaxation process, while stringlets associated with localized stable modes and corresponding perfectly reversible atomic motion give rise to the Boson peak. To further clarify the origin of the Boson peak, we calculate the density of states for both the stringlet particles and the 'normal' particles and find that the stringlet particles give rise to a Boson peak while the normal atoms do not. The growth of stringlets upon heating ultimately also leads to the 'softening' of these excitations, and the Boson peak frequency and shear modulus drop in concert with this softening. The growth of string-like collective motion upon heating in the fast-dynamics regime is further shown to be responsible for the growth in the intensity of the fast relaxation process. Relaxation in cooled liquids clearly involves a hierarchy of relaxation processes acting on rather different time and spatial scales.
description: Accepted for publication in the Journal of Chemical Physics
title: Die Dramatikerin Theresia Walser spricht mit Maria Aparecida Barbosa über das Theaterstück "King Kongs Töchter"
title: Mit einer Einführung von Karina Schuller
titleType: Subtitle
Creators: name: Barbosa, Maria Aparecida
Publisher: name: Germanistisches Institut (Universität Münster)
Year: 2012
Subjects: 800 Literatur, Rhetorik, Literaturwissenschaft

description: In ihrem Interview spricht die Literaturwissenschaftlerin Maria Aparecida Barbosa mit der Dramatikerin Theresia Walser. Am Beispiel des Theaterstücks King Kongs Töchter (1998), das sich auf groteske Art und Weise mit dem Alltag in einem Altenheim befasst, werden dabei verschiedene Themen angesprochen: Es geht um die Selbstreflexivität des Theaters, um Walsers Verständnis von poetischer Sprache und Realismus sowie um den kreativen Schreibprozess im Allgemeinen. Ergänzt wird das Interview durch eine Einführung von Karina Schuller.
title: Kompetenz
title: Versuch einer genealogischen Ideologiekritik
titleType: Subtitle
Creators: name: Gunia, Jürgen
Publisher: name: Germanistisches Institut (Universität Münster)
Year: 2011
Subjects: 800 Literatur, Rhetorik, Literaturwissenschaft

description: In seinem Artikel nimmt Jürgen Gunia den Kompetenzbegriff in den Blick, der nicht nur in den Geisteswissenschaften derzeitig erhebliche Konjunktur erfährt. Dabei geht es weniger um eine Argumentation gegen Kompetenz als vielmehr um eine kritische Reflexion der Kompetenzrhetorik, die sich unter anderem eines vom Militär entlehnten Begriffsinventars bedient. Gunia tritt daher für eine Entdramatisierung des emphatischen Kompetenzbegriffs ein.
Διερεύνηση της Χρήσης των Τεχνολογιών Πληροφορικής σε διαδικασίες Logistics για τη Διοίκηση Εφοδιαστικής Αλυσίδας Αγροτικών Προϊόντων
Creators: name: Βρυλλάκης, Στυλιανός Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Εφοδιαστική Αλυσίδα
Διοίκηση Εφοδιαστική Αλυσίδα Logistics
E-logistics
Τεχνολογίες Πληροφορικής
Διαδίκτυο
Supply Chain
Supply Chain Management
Logistics
e-logistics

description: Σκοπός της παρούσας διατριβής είναι να παρουσιάσει τις θετικές και αρνητικές επιπτώσεις των νέων τεχνολογιών στον αγροτικό - επιχειρησιακό κόσμο, να καταγράψει την υπάρχουσα κατάσταση και να παροτρύνει τις εμπλεκόμενες οντότητες στον αγροτικό τομέα να προσαρμοστούν στο περιβάλλον που επιβάλει η νέα πραγματικότητα. Περιγράφεται η Εφοδιαστική Αλυσίδα και τα βασικά χαρακτηριστικά της, επιχειρείται μια εισαγωγή στην έννοια των Logistics και των μορφών άσκησης πρακτικών Logistics στο νέο επιχειρηματικό περιβάλλον. Παρουσιάζονται οι Τεχνολογίες Πληροφορικής, Διαδίκτυο και ο προσδιορισμός των δραστηριοτήτων και των τεχνολογιών των e-logistics. Επίσης γίνεται μια σύντομη περιγραφή του Αγροτικού Τομέα, ακολουθεί μια ανάλυση της Διοίκησης της Εφοδιαστικής Αλυσίδας του - στόχοι, δραστηριότητες, εφαρμογές – και αναλύεται το μοντέλο Logistics στη Διοίκηση Εφοδιαστικής Αλυσίδας για Αγροτικά Προϊόντα. Επίσης αναφέρονται μερικές από τις επιχειρήσεις που εφαρμόζουν logistics στον Αγροτικό Τομέα στην Ελλάδα και τα οφέλη από την εφαρμογή τους. Στο τέλος, γίνεται σύνοψη των αποτελεσμάτων και επισημάνσεις και παρουσιάζονται τα συμπεράσματα της μελέτης και οι προοπτικές.
description: The aim of this study is to present the positive and negative repercussions of new technologies on the agricultural field, to record the present conditions and to exhort all the parties to adapt to the new reality. Describes the basic characteristics of the supply chain and explains the Logistics applications in the new business environment. Also presents the software technologies, internet and the e-logistics technologies. Furthermore, takes place a short description of the agricultural field, analysis of the supply chain management and the model of Logistics in the Supply Chain Management for agricultural products. Agricultural companies which use Logistics in Greece are reported. At the end of the study conclusions and proposals are presented.
Compression-induced stiffness in the buckling of a one fiber composite
Creators: name: Lagrange, Romain
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study the buckling of a one fiber composite whose matrix stiffness is slightly dependent on the compressive force. We show that the equilibrium curves of the system exhibit a limit load when the induced stiffness parameter gets bigger than a threshold. This limit load increases when increasing the stiffness parameter and is related to a possible localized path in the post-buckling domain. Such a change in the maximum load may be very desirable from a structural stand point.
Convective envelopes in rotating OB stars
Creators: name: Maeder, André
name: Georgy, Cyril
name: Meynet, Georges
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the effects of rotation on the outer convective zones of massive stars. We examine the effects of rotation on the thermal gradient and on the Solberg--Hoiland term by analytical developments and by numerical models. Writing the criterion for convection in rotating envelopes, we show that the effects of rotation on the thermal gradient are much larger and of opposite sign to the effect of the Solberg-Hoiland criterion. On the whole, rotation favors convection in stellar envelopes at the equator and to a smaller extent at the poles. In a rotating 20 Msun star at 94% of the critical angular velocity, there are two convective envelopes, with the bigger one having a thickness of 13.2% of the equatorial radius. In the non-rotating model, the corresponding convective zone has a thickness of only 4.6% of the radius. The occurrence of outer convection in massive stars has many consequences.
description: 4 pages, 3 figures, accepted by Astronomy and Astrophysics
Quantum State Transfer in Spin-1 Chains
Creators: name: Romero-Isart, O.
name: Eckert, K.
name: Sanpera, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the transfer of quantum information through a Heisenberg spin-1 chain prepared in its ground state. We measure the efficiency of such a quantum channel {\em via} the fidelity of retrieving an arbitrarily prepared state and {\em via} the transfer of quantum entanglement. The Heisenberg spin-1 chain has a very rich quantum phase diagram. We show that the phase boundaries are reflected in sharp variations of the transfer efficiency. In the vicinity of the border between the dimer and the ferromagnetic phase (in the conjectured spin-nematic region), we find strong indications for a qualitative change of the excitation spectrum. Moreover, we identify two regions of the phase diagram which give rise to particularly high transfer efficiency; the channel might be non-classical even for chains of arbitrary length, in contrast to spin-1/2 chains.
description: 4 pages, 4 figures, published version
title: Messen gegen die Angst und Berechnung des Zufalls
title: Grundgedanken der Poetik Daniel Kehlmanns
titleType: Subtitle
Creators: name: Tetzlaff, Stefan
Publisher: name: Germanistisches Institut (Universität Münster)
Year: 2011
Subjects: 800 Literatur, Rhetorik, Literaturwissenschaft

description: Das Motiv des Zufalls soll als zentrales Verfahren der Prosa Daniel Kehlmanns herausgestellt und in seiner Funktion zur Erprobung der Grenzen realistischen Erzählens und der Annäherung an ein Konzept des ›magischen Realismus‹ beschrieben werden.
Minutes of meeting of the Trustees of the Winfield & Okanagan Centre Irrigation District, March 17, 1948
Creators: name: Trustees Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of meeting of the Trustees of the Winfield & Okanagan Centre Irrigation District, dated March 17, 1948, regarding the possible purchase of the irrigation system by the Irrigation District.
Η γερμανική ως ξένη γλώσσα στο ελληνικό δημόσιο σχολείο: η διαφοροποίηση της διδασκαλίας σε τάξεις δημοτικού, στις οποίες φοιτούν και μαθητές με άλλη μητρική γλώσσα από την ελληνική
Creators: name: Μπαλασά, Ευαγγελία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Γερμανική γλώσσα
Δημοτικό σχολείο
Διαφοροποίηση
Δημόσιο σχολείο
Ερωτηματολόγιο
German language
Greek state school

description: Στην παρούσα εργασία έγινε η προσπάθεια να αποδειχθεί μία βασική έλλειψη στην ελληνική εκπαιδευτική πραγματικότητα αναφορικά με τη διδασκαλία της Γερμανικής Γλώσσας και να διατυπωθούν κάποιες προτάσεις που μπορούν να συντελέσουν στη βελτίωση της κατάστασης.Στην έρευνα που διεξήχθη χρησιμοποιήθηκε γραπτό ερωτηματολόγιο, ώστε να δοθεί η δυνατότητα στους εκπαιδευτικούς να μελετήσουν το περιεχόμενο και επομένως να προβληματιστούν για το θέμα Στόχος ήταν να αποκομίσουν και οι ερωτηθέντες οφέλη από αυτό το ερωτηματολόγιο και όχι μόνο να το συμπληρώσουν προς όφελος της έρευνας. Τα αποτελέσματα δεν μπορούν να γενικευτούν σε όλο το εύρος του εκπαιδευτικού προσωπικού της Γερμανικής Γλώσσας στην Πρωτοβάθμια Εκπαίδευση όλης της χώρας, επειδή το δείγμα είναι περιορισμένο. Αφού όμως αποδείχτηκε η ανάγκη ενσωμάτωσης συγκεκριμένου διδακτικού υλικού, στο οποίο να λαμβάνονται υπόψη οι έννοιες της πολυγλωσσίας και της πολυπολιτισμικότητας και η αναγκαιότητα συγκεκριμένης μόρφωσης/ επιμόρφωσης των εκπαιδευτικών στη Διαπολιτισμική Αγωγή, κρίνεται αναγκαία η περαιτέρω ενασχόληση με το ζήτημα στα πλαίσια μελλοντικών ερευνών.
description: ZF consists of three parts : First of all the themes of multilingualism and multiculturalism are presented theoritically, followed by the educational policy of some European countries. Afterwards these themes are examined in the Common European Referency of Languages. In the scientific research (second part) the necessity of the diversity in teaching is being proved as well as some final suggestions are listed at the end.
Η παιδαγωγική σκέψη στον γέροντα Παΐσιο:
Creators: name: Κολιός, Γεώργιος Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Παΐσιος
Παιδαγωγική
Paissios
Education

description: Ο γέροντας Παΐσιος έχοντας υπόψιν του ότι ο άνθρωπος είναι ένα ον, το οποίο διαπαιδαγωγείται, αφιέρωσε τη ζωή του προς αυτή την κατεύθυνση, με απώτερο στόχο να δώσει τις κατευθύνσεις, εκείνες για τη σωστή αγωγή του παιδιού και του νέου, η οποία θα διέπεται από ένα γνήσιο Ορθόδοξο χριστιανικό πνεύμα.
description: Paissios of Athos want to educate the child based in the Orthodox spirit and tradicion.
Magnetization reversal driven by spin-injection : a mesoscopic spin-transfer effect
Creators: name: Wegrowe, J. -E.
name: Santos, S. M.
name: Ciornei, M. -C.
name: Drouhin, H. -J.
name: Rubí, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A mesoscopic description of spin-transfer effect is proposed, based on the spin-injection mechanism occurring at the junction with a ferromagnet. The effect of spin-injection is to modify locally, in the ferromagnetic configuration space, the density of magnetic moments. The corresponding gradient leads to a current-dependent diffusion process of the magnetization. In order to describe this effect, the dynamics of the magnetization of a ferromagnetic single domain is reconsidered in the framework of the thermokinetic theory of mesoscopic systems. Assuming an Onsager cross-coefficient that couples the currents, it is shown that spin-dependent electric transport leads to a correction of the Landau-Lifshitz-Gilbert equation of the ferromagnetic order parameter with supplementary diffusion terms. The consequence of spin-injection in terms of activation process of the ferromagnet is deduced, and the expressions of the effective energy barrier and of the critical current are derived. Magnetic fluctuations are calculated: the correction to the fluctuations is similar to that predicted for the activation. These predictions are consistent with the measurements of spin-transfer obtained in the activation regime and for ferromagnetic resonance under spin-injection.
description: 20 pages, 2 figures
Stability of Relativistic Matter with Magnetic Fields for Nuclear Charges up to the Critical Value
Creators: name: Frank, Rupert L.
name: Lieb, Elliott H.
name: Seiringer, Robert
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We give a proof of stability of relativistic matter with magnetic fields all the way up to the critical value of the nuclear charge $Zα=2/π$.
description: LaTeX2e, 12 pages
Particle acceleration mechanisms
Creators: name: Petrosian, V.
name: Bykov, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the possible mechanisms for production of non-thermal electrons which are responsible for non-thermal radiation in clusters of galaxies. Our primary focus is on non-thermal Bremsstrahlung and inverse Compton scattering, that produce hard X-ray emission. We briefly review acceleration mechanisms and point out that in most astrophysical situations, and in particular for the intracluster medium, shocks, turbulence and plasma waves play a crucial role. We consider two scenarios for production of non-thermal radiation. The first is hard X-ray emission due to non-thermal Bremsstrahlung by nonrelativistic particles. Non-thermal tails are produced by accelerating electrons from the background plasma with an initial Maxwellian distribution. However, these tails are accompanied by significant heating and they are present for a short time of <10^6 yr, which is also the time that the tail will be thermalised. Such non-thermal tails, even if possible, can only explain the hard X-ray but not the radio emission which needs GeV or higher energy electrons. For these and for production of hard X-rays by the inverse Compton model, we need the second scenario where there is injection and subsequent acceleration of relativistic electrons. It is shown that a steady state situation, for example arising from secondary electrons produced from cosmic ray proton scattering by background protons, will most likely lead to flatter than required electron spectra or it requires a short escape time of the electrons from the cluster. An episodic injection of relativistic electrons, presumably from galaxies or AGN, and/or episodic generation of turbulence and shocks by mergers can result in an electron spectrum consistent with observations but for only a short period of less than one billion years.
description: 22 pages, 5 figures, accepted for publication in Space Science Reviews, special issue "Clusters of galaxies: beyond the thermal view", Editor J.S. Kaastra, Chapter 11; work done by an international team at the International Space Science Institute (ISSI), Bern, organised by J.S. Kaastra, A.M. Bykov, S. Schindler & J.A.M. Bleeker
Towards Automated Satellite Conjunction Management with Bayesian Deep Learning
Creators: name: Pinto, Francesco
name: Acciarini, Giacomo
name: Metz, Sascha
name: Boufelja, Sarah
name: Kaczmarek, Sylvester
name: Merz, Klaus
name: Martinez-Heras, José A.
name: Letizia, Francesca
name: Bridges, Christopher
name: Baydin, Atılım Güneş
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: G.3; I.2.6; J.2
subject: 68T37, 68T05, 62P35

description: After decades of space travel, low Earth orbit is a junkyard of discarded rocket bodies, dead satellites, and millions of pieces of debris from collisions and explosions. Objects in high enough altitudes do not re-enter and burn up in the atmosphere, but stay in orbit around Earth for a long time. With a speed of 28,000 km/h, collisions in these orbits can generate fragments and potentially trigger a cascade of more collisions known as the Kessler syndrome. This could pose a planetary challenge, because the phenomenon could escalate to the point of hindering future space operations and damaging satellite infrastructure critical for space and Earth science applications. As commercial entities place mega-constellations of satellites in orbit, the burden on operators conducting collision avoidance manoeuvres will increase. For this reason, development of automated tools that predict potential collision events (conjunctions) is critical. We introduce a Bayesian deep learning approach to this problem, and develop recurrent neural network architectures (LSTMs) that work with time series of conjunction data messages (CDMs), a standard data format used by the space community. We show that our method can be used to model all CDM features simultaneously, including the time of arrival of future CDMs, providing predictions of conjunction event evolution with associated uncertainties.
description: 7 pages, 2 figures
Noise correlations of the ultra-cold Fermi gas in an optical lattice
Creators: name: Paananen, T.
name: Koponen, T. K.
name: Torma, P.
name: Martikainen, J. -P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this paper we study the density noise correlations of the two component Fermi gas in optical lattices. Three different type of phases, the BCS-state (Bardeen, Cooper, and Schieffer), the FFLO-state (Fulde, Ferrel, Larkin, and Ovchinnikov), and BP (breach pair) state, are considered. We show how these states differ in their noise correlations. The noise correlations are calculated not only at zero temperature, but also at non-zero temperatures paying particular attention to how much the finite temperature effects might complicate the detection of different phases. Since one-dimensional systems have been shown to be very promising candidates to observe FFLO states, we apply our results also to the computation of correlation signals in a one-dimensional lattice. We find that the density noise correlations reveal important information about the structure of the underlying order parameter as well as about the quasiparticle dispersions.
description: 25 pages, 11 figures. Some figures are updated and text has been modified
Kinesin as an electrostatic machine
Creators: name: Ciudad, A.
name: Sancho, J. M.
name: Tsironis, G. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Kinesin and related motor proteins utilize ATP fuel to propel themselves along the external surface of microtubules in a processive and directional fashion. We show that the observed step-like motion is possible through time varying charge distributions furnished by the ATP hydrolysis circle while the static charge configuration on the microtuble provides the guide for motion. Thus, while the chemical hydrolysis energy induces appropriate local conformational changes, the motor translational energy is fundamentally electrostatic. Numerical simulations of the mechanical equations of motion show that processivity and directionality are direct consequences of the ATP-dependent electrostatic interaction between the different charge distributions of kinesin and microtubule.
description: 6 pages, 3 figures. To appear in the Journal of Biological Physics
Five-dimensional rotating black holes in Einstein-Gauss-Bonnet theory
Creators: name: Brihaye, Y.
name: Radu, E.
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 present arguments for the existence of five-dimensional rotating black holes with equal magnitude angular momenta in Einstein-Gauss-Bonnet theory with negative cosmological constant. These solutions posses a regular horizon of spherical topology and approach asymptotically an Anti-de Sitter spacetime background. We discuss the general properties of these solutions and, using an adapted counterterm prescription, we compute their entropy and conserved charges.
description: 10 pages, 6 figures, references added, minor modifications, typos corrected
Morphophysiological traits of an amphibian exposed to historical industrial pollution in a Brazilian biodiversity hotspot
Creators: name: Santana, Erika
name: Schiesari, Luis
name: Gomes, Fernando
name: Martins, Marcio
Publisher: name: Brill Online
Year: 2021
Subjects: subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences

description: Industrial pollution is a significant global threat to biodiversity, but its consequences on rainforest ecosystems remain poorly understood. Amphibians are especially susceptible to pollutants released on natural environments due to their aquatic-terrestrial life cycle. Here, we explored the association of severe historical air, water, and soil pollution with physiological and morphological alterations on Rhinella ornata individuals, an endemic toad species of Atlantic Forest, a world biodiversity hotspot. We hypothesized that individuals sampled in sites closer to the pollution source will present worse indicators of health. As predicted, toads at decreasing distances from the pollution source presented enlargement of organs related to detoxification function (liver and kidneys) and compensatory immunological function (spleen). Contrary to our predictions, however, we do not found significant effects of proximity to the pollution source on individuals’ body condition index, on the indicative of fertility (testicles masses) or on macroparasite infection’s response (eosinophil counts). Surprisingly, proximity to the pollution source was associated with lower chronic stress levels (neutrophil/lymphocyte ratio) on individuals. We discuss which processes could promote the alterations found on the toads. We also discuss the possible acquirement of local resistance to contamination on toads populations closer from pollution source, giving the more than 60 years of exposure to chemical contaminants in the area.
The total synthesis of acanthodoral and studies on the total synthesis of waihoensene and the asymmetric bisvinylogous Mukaiyama aldol reaction
Creators: name: Eggert, Alina
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2024
Subjects: subject: total synthesis
subject: natural products
subject: acanthodoral
subject: waihoensene
subject: quaternary stereocenters
subject: rearrangements
subject: bisvinylogous Mukaiyama aldol reaction
subject: contains research data
subject: Totalsynthese
subject: Naturstoffe
subject: Acanthodoral
subject: Waihoensene
subject: Quaternäre Stereozentren
subject: Umlagerungen
subject: bisvinyloge Mukaiyama Aldol Reaktion
subject: enthält Forschungsdaten
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: ...
Quadruply Ionized Barium as a Candidate for a High-Accuracy Optical Clock
Creators: name: Beloy, Kyle
name: Dzuba, Vladimir A.
name: Brewer, Samuel M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We identify Ba$^{4+}$ (Te-like) as a promising candidate for a high-accuracy optical clock. The lowest-lying electronic states are part of a $^3P_J$ fine structure manifold with anomalous energy ordering, being non-monotonic in $J$. We propose a clock based on the 338.8 THz electric quadrupole transition between the ground ($^3P_2$) and first-excited ($^3P_0$) electronic states. We perform relativistic many-body calculations to determine relevant properties of this ion. The lifetime of the excited clock state is found to be several seconds, accommodating low statistical uncertainty with a single ion for practical averaging times. The differential static scalar polarizability is found to be small and negative, providing suppressed sensitivity to blackbody radiation while simultaneously allowing cancellation of Stark and excess micromotion shifts. With the exception of Hg$^+$ and Yb$^+$, sensitivity to variation of the fine structure constant is greater than other optical clocks thus far demonstrated.
The fractional symmetric rigid rotor
Creators: name: Herrmann, Richard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Based on the Riemann fractional derivative the Casimir operators and multipletts for the fractional extension of the rotation group SO(n) are calculated algebraically. The spectrum of the corresponding fractional symmetric rigid rotor is discussed. It is shown, that the rotational, vibrational and $γ$-unstable limits of the standard geometric collective models are particular limits of this spectrum. A comparison with the ground state band spectra of nuclei shows an agreement with experimental data better than 2%. The derived results indicate, that the fractional symmetric rigid rotor is an appropriate tool for a description of low energy nuclear excitations.
description: pages 12, figures 7, accepted by J.Phys.G