cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Θεία Πρόνοια και Ειμαρμένη κατά τους Τρείς Ιεράρχες: (διατριβή επί διδακτορία)
Creators: name: Νίκου, Αθανάσιος πρ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ειμαρμένη (μοίρα)
Πεπρωμένο(αστρολογία-ωροσκόπια)
Ανθρώπινη ελευθερία
Θεία Οικονομία
Εσχατολογία
Doom (fate)
Destiny (astrology-horoscopes-predictions)
Human freedom
Providential help
Eschatology

description: Αντικείμενο και σκοπός της παρούσης μελέτης είναι η όσο το δυνατόν καλύτερη παρουσίαση και εξέταση του κορυφαίου θεολογικού ζητήματος της Θείας Προνοίας, αλλά και του φιλοσοφικού προβλήματος της Ειμαρμένης, όπως αυτά αναλύονται μέσα στα συγγράμματα των τριών Ιεραρχών κια οικουμενικών διδασκάλων, Βασιλείου του Μεγάλου, Γρηγορίου του θεολόγου και Ιωάννου του Χρυσοστόμου. Οι Τρείς Πατέρες έζησαν σε μεια περίοδο(δ' αι. μ.χ.) κρίσιμη για την ιστορία του χριστιανισμού, μία περίοδο που χαρακτηριζόταν από ένα έντονο φιλοσοφικό και θρησκευτικό συγκρητισμό και μια προσπάθεια αναβιώσεως αρχαίων θεωριών που είχαν σχέση με τον κόσμο και τον άνθρωπο αλλά και τον Θεό. Θίγονται και κάποια συναφή ζητήματα που έχουν σχέση με την Πρόνοια και την Ειμαρμένη(τύχη-μοίρα-ανθρώπιν ελευθερία-πόνος-θλίψη), με την ελπίδα η μελέτη αυτή να αποδειχθεί ωφέλιμη ειδικά σε όσους ασχολούνται περί την Φιλοσοφίαν και θεολογίαν
description: The theme of this study is a carreful presentation and examination of the top-ranking theological issue of Divine Providence as well as the philosophical question of Doom in the way they are presented in the writings of the Three Bishops and ecumenical teachers Basil the Great, Gregory Theologian and John Chrysostoms. The Three holy Fathers lived in a crucial period for christianity which was marked by a keen philosophical and religious b;ending and an attempt to revive aucient theories related to the cosmos, man and God. There are also some related questions raised, which are dealing with Providence and Doom(fate-destiny-human freedom-pain-sorow) with the hope that this study will prove itself beneficial to those engaged in Philosophy and Theology
Black Hole Cross Section at the Large Hadron Collider
Creators: name: Gingrich, Douglas M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Black hole production at the Large Hadron Collider (LHC) was first discussed in 1999. Since then, much work has been performed in predicting the black hole cross section. In light of the start up of the LHC, it is now timely to review the state of these calculations. We review the uncertainties in estimating the black hole cross section in higher dimensions. One would like to make this estimate as precise as possible since the predicted values, or lower limits, obtain for the fundamental Planck scale and number of extra dimensions from experiments will depend directly on the accuracy of the cross section. Based on the current knowledge of the cross section, we give a range of lower limits on the fundamental Planck scale that could be obtained at LHC energies.
description: 28 pages, 9 figures, LaTeX; added references, corrected typos, expanded discussion
Symmetry-preserving Observers
Creators: name: Bonnabel, S.
name: Martin, Ph.
name: Rouchon, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper presents three non-linear observers on three examples of engineering interest: a chemical reactor, a non-holonomic car, and an inertial navigation system. For each example, the design is based on physical symmetries. This motivates the theoretical development of invariant observers, i.e, symmetry-preserving observers. We consider an observer to consist in a copy of the system equation and a correction term, and we give a constructive method (based on the Cartan moving-frame method) to find all the symmetry-preserving correction terms. They rely on an invariant frame (a classical notion) and on an invariant output-error, a less standard notion precisely defined here. For each example, the convergence analysis relies also on symmetries consideration with a key use of invariant state-errors. For the non-holonomic car and the inertial navigation system, the invariant state-errors are shown to obey an autonomous differential equation independent of the system trajectory. This allows us to prove convergence, with almost global stability for the non-holonomic car and with semi-global stability for the inertial navigation system. Simulations including noise and bias show the practical interest of such invariant asymptotic observers for the inertial navigation system.
description: To be published in IEEE Automatic Control
Knock Detection in Combustion Engine Time Series Using a Theory-Guided 1D Convolutional Neural Network Approach
Creators: name: Ofner, Andreas B.
name: Kefalas, Achilles
name: Posch, Stefan
name: Geiger, Bernhard C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper introduces a method for the detection of knock occurrences in an internal combustion engine (ICE) using a 1D convolutional neural network trained on in-cylinder pressure data. The model architecture was based on considerations regarding the expected frequency characteristics of knocking combustion. To aid the feature extraction, all cycles were reduced to 60° CA long windows, with no further processing applied to the pressure traces. The neural networks were trained exclusively on in-cylinder pressure traces from multiple conditions and labels provided by human experts. The best-performing model architecture achieves an accuracy of above 92% on all test sets in a tenfold cross-validation when distinguishing between knocking and non-knocking cycles. In a multi-class problem where each cycle was labeled by the number of experts who rated it as knocking, 78% of cycles were labeled perfectly, while 90% of cycles were classified at most one class from ground truth. They thus considerably outperform the broadly applied MAPO (Maximum Amplitude of Pressure Oscillation) detection method, as well as other references reconstructed from previous works. Our analysis indicates that the neural network learned physically meaningful features connected to engine-characteristic resonance frequencies, thus verifying the intended theory-guided data science approach. Deeper performance investigation further shows remarkable generalization ability to unseen operating points. In addition, the model proved to classify knocking cycles in unseen engines with increased accuracy of 89% after adapting to their features via training on a small number of exclusively non-knocking cycles. The algorithm takes below 1 ms (on CPU) to classify individual cycles, effectively making it suitable for real-time engine control.
description: accepted for publication in IEEE/ASME Transactions on Mechatronics. (c) IEEE 2022
Detection Limits from the McDonald Observatory Planet Search Program
Creators: name: Wittenmyer, Robert A.
name: Endl, Michael
name: Cochran, William D.
name: Hatzes, Artie P.
name: Walker, G. A. H.
name: Yang, S. L. S.
name: Paulson, Diane B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on the long-term radial-velocity surveys carried out with the McDonald Observatory 2.7m Harlan J. Smith Telescope from 1988 to the present, we derive upper limits to long-period giant planet companions for 31 nearby stars. Data from three phases of the McDonald Observatory 2.7m planet-search program have been merged together and for 17 objects, data from the pioneering Canada-France-Hawaii Telescope (CFHT) radial-velocity program have also been included in the companion-limits determination. For those 17 objects, the baseline of observations is in excess of 23 years, enabling the detection or exclusion of giant planets in orbits beyond 8 AU. We also consider the possibility of eccentric orbits in our computations. At an orbital separation of 5.2 AU, we can exclude on average planets of M sin i > 2.0+/-1.1 Mjup (e=0) and M sin i > 4.0+/-2.8 Mjup (e=0.6) for 25 of the 31 stars in this survey. However, we are not yet able to rule out "true Jupiters," i.e. planets of M sin i ~ 1 Mjup in 5.2 AU orbits. These limits are of interest for the Space Interferometry Mission (SIM), Terrestrial Planet Finder (TPF), and Darwin missions which will search for terrestrial planets orbiting nearby stars, many of which are included in this work.
description: 21 pages, 15 figures, accepted for publication in AJ
To conserve, or not to conserve: A review of nonconservative theories of gravity
Creators: name: Velten, Hermano
name: Caramês, Thiago R. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Apart from the familiar structure firmly-rooted in the general relativistic field equations where the energy--momentum tensor has a null divergence i.e., it conserves, there exists a considerable number of extended theories of gravity allowing departures from the usual conservative framework. Many of these theories became popular in the last few years, aiming to describe the phenomenology behind dark matter and dark energy. However, within these scenarios, it is common to see attempts to preserve the conservative property of the energy--momentum tensor. Most of the time, it is done by means of some additional constraint that ensures the validity of the standard conservation law, as long as this option is available in the theory. However, if no such extra constraint is available, the theory will inevitably carry a non-trivial conservation law as part of its structure. In this work, we review some of such proposals discussing the theoretical construction leading to the non-conservation of the energy--momentum tensor.
description: 40 pages. Invited review to Special Issue "Universe: 5th Anniversary"
Κατηγορηματικά ονόματα: μέθοδος ανάλυσής τους για ηλεκτρονικές εφαρμογές
Creators: name: Σφέτσιου, Βασιλεία
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Κατηγορηματικά ονόματα
Υποστηρικτικά ρήματα
Εναλλακτικά ρήματα
Λεξικό - Γραμματική
Προσδιοριστές
Μετασχηματισμοί
Predicative nouns
Support verbs
Alternative verbs
Lexicon - Grammar
Determiners
Transformations

description: Κατηγορηματικά ονόματα (Npred) είναι τα αφηρημένα ουσιαστικά που συνδυάζονται φραστικά με απολεξικοποιημένα ρήματα όπως κάνω, έχω, είμαι σε και τα οποία αποτελούν το κατηγόρημα μιας πρότασης. Οι συνδυασμοί αυτοί καθορίζονται σημασιολογικά από το Npred ενώ το ρήμα τους τοποθετεί στο χρόνο και τους εφοδιάζει με ένα πρόσωπο. Υφίστανται μετασχηματισμούς που δεν αλλοιώνουν τη σημασία της αρχικής πρότασης και οι οποίοι διευθετούνται με τη βοήθεια των προσδιοριστών, που έχουν ως επί το πλείστον τη μορφή άρθρων. Η δομή της πρότασης (με κάνω και Npred) εξετάζεται συντακτικο-σημασιολογικά σε πίνακες του Λεξικού-Γραμματικής οι οποίοι μετατρέπονται στη συνέχεια σε παραμετροποιημένα πεπερασμένα αυτόματα(γράφους) που εφοδιάζουν τον Η/Υ με τις αντίστοιχες πληροφορίες.
description: Predicative nouns are the abstract nouns which combine with verbs void of meaning such as do, have, be + preposition and which are the predicate of a sentence. These combinations get their meaning from the Npred (predicative noun) while the verb defines the tense and the person. They undergo transformations which do not change the meaning of the initial sentence and which are realised with the help of the determiners which come in the form of aticles. The construction of the sentence is examined syntactically and semantically in the frame of lexicon-grammar tables which are afterwards transformed to graphs in order to provide the PC with the corresponding information.
Quasi-Optimal Leader Election Algorithms in Radio Networks with Loglogarithmic Awake Time Slots
Creators: name: Lavault, Christian
name: Marckert, Jean-François
name: Ravelomanana, Vlady
Publisher: name: arXiv
Year: 2006
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: A radio network (RN) is a distributed system consisting of $n$ radio stations. We design and analyze two distributed leader election protocols in RN where the number $n$ of radio stations is unknown. The first algorithm runs under the assumption of {\it limited collision detection}, while the second assumes that {\it no collision detection} is available. By ``limited collision detection'', we mean that if exactly one station sends (broadcasts) a message, then all stations (including the transmitter) that are listening at this moment receive the sent message. By contrast, the second no-collision-detection algorithm assumes that a station cannot simultaneously send and listen signals. Moreover, both protocols allow the stations to keep asleep as long as possible, thus minimizing their awake time slots (such algorithms are called {\it energy-efficient}). Both randomized protocols in RN areshown to elect a leader in $O(\log{(n)})$ expected time, with no station being awake for more than $O(\log{\log{(n)}})$ time slots. Therefore, a new class of efficient algorithms is set up that match the $Ω(\log{(n)})$ time lower-bound established by Kushilevitz and Mansour.
The ATLAS pixel detector
Creators: name: Cristinziani, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: After a ten years planning and construction phase, the ATLAS pixel detector is nearing its completion and is scheduled to be integrated into the ATLAS detector to take data with the first LHC collisions in 2007. An overview of the construction is presented with particular emphasis on some of the major and most recent problems encountered and solved.
description: 5 pages, 11 figures, conference proceedings XVth International Workshop on Vertex detectors (Vertex06), Perugia, September 2006
On the training of sparse and dense deep neural networks: less parameters, same performance
Creators: name: Chicchi, Lorenzo
name: Giambagli, Lorenzo
name: Buffoni, Lorenzo
name: Carletti, Timoteo
name: Ciavarella, Marco
name: Fanelli, Duccio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Deep neural networks can be trained in reciprocal space, by acting on the eigenvalues and eigenvectors of suitable transfer operators in direct space. Adjusting the eigenvalues, while freezing the eigenvectors, yields a substantial compression of the parameter space. This latter scales by definition with the number of computing neurons. The classification scores, as measured by the displayed accuracy, are however inferior to those attained when the learning is carried in direct space, for an identical architecture and by employing the full set of trainable parameters (with a quadratic dependence on the size of neighbor layers). In this Letter, we propose a variant of the spectral learning method as appeared in Giambagli et al {Nat. Comm.} 2021, which leverages on two sets of eigenvalues, for each mapping between adjacent layers. The eigenvalues act as veritable knobs which can be freely tuned so as to (i) enhance, or alternatively silence, the contribution of the input nodes, (ii) modulate the excitability of the receiving nodes with a mechanism which we interpret as the artificial analogue of the homeostatic plasticity. The number of trainable parameters is still a linear function of the network size, but the performances of the trained device gets much closer to those obtained via conventional algorithms, these latter requiring however a considerably heavier computational cost. The residual gap between conventional and spectral trainings can be eventually filled by employing a suitable decomposition for the non trivial block of the eigenvectors matrix. Each spectral parameter reflects back on the whole set of inter-nodes weights, an attribute which we shall effectively exploit to yield sparse networks with stunning classification abilities, as compared to their homologues trained with conventional means.
Η αρχιτεκτονική του ιερού του Ερμή και της Αφροδίτης στην κάτω Σύμη Βιάννου
Creators: name: Ζαρίφης, Νικόλαος Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Μινωϊκό ιερό
Αρχαίο Ελληνικό Ιερό
Θρησκευτική αρχιτεκτονική
Minoan sanctuary
Ancient Greek Sanctuary
Religious architecture

description: Το ιερό του Ερμή και της Αφροδίτης στη Σύμη Βιάννου, στην Κρήτη, ιδρύθηκε στις αρχές της δεύτερης χιλιετίας π.Χ., στις νότιες πλαγιές του ορεινού όγκου της Δίκτης και λειτούργησε χωρίς διακοπή έως και την παλαιοχριστιανική εποχή, διατηρώντας την αίγλη του επί 2600 χρόνια, παρά τις θεμελιώδεις αλλαγές στη θρησκεία και στη λατρευτική πρακτική κατά την οποία προσδιορίστηκαν οκτώ κύριες και δεκαπέντε δευτερεύουσες οικοδομικές φάσεις , συνέβαλε : α. στην κατά το δυνατόν λεπτομερέστερη παρακολούθηση της αρχιτεκτονικής εξέλιξης του χώρου και στον προσδιορισμό των μετασκευών και τροποποιήσεων συγκεκριμένων κτιριακών συγκροτημάτων β. στη γραφική αποκατάσταση των καλύτερα διατηρούμενων αρχιτεκτονικών στοιχείων γ. στη διαχρονική παρακολούθηση των κατασκευαστικών μεθόδων και στην εξέταση των χρησιμοποιούμενων εκάστοτε δομικών υλικών ε. στην καταγραφή των διάσπαρτων στο χώρο αρχιτεκτονικών μελών και στον προσδιορισμό τηα αρχικής τους θέσης και της λειτουργίας τους στ. την εξέταση της επίδρασης του ευρύτερου περιβάλλοντος στην ίδρυση του Ιερού στη συγκεκριμένη θέση
description: The Syme sanctuary is located on the southern slopes of Mount Dikte on the border on the border of the Heraklion and Lasithi provinces and in the first millennium was dedicated to the worship of Hermes and Aphrodite. The evidence of excavation indicates that the sanctuary was established near the beginning of the second millennium BC or a little earlier and functioned until early christian times. During the centuries of use natural deteriaration played an important role, new constructions damaged earlier ones and building ,materials were recycled. The study of the resulted from repeated interventions and modifications. The study of the architecture of the Syme sanctuary has already contributed significantly to the understanding of the site in various ways : by elucidating in as much detail as possible the site's complex architectural development; proposing viable reconstructionss non paper of the best preserved structures; distinguishing processes of alteration and modification within individual structures and thus defining more clearly their relation with earlier and later buildings; investigating diachronic as well as chronogically specific construction methods and materials; studying architectural elements no longer in situ and determining their original function; and investigating environmental factors that must have influenced the establishment of the sanctuary at its specific location
Fast-track benefits : fact or fiction
Creators: name: Sproule, James Andrew
Publisher: name: University of British Columbia
Year: 2008

description: The objective of this thesis is to develop a methodology that can account for changes to a construction project's basic variables caused by fast-tracking strategies, specifically, overlapping the design and construction phases and controlling resource levels. This methodology is applied to an example to investigate the effects on the premiums of fast-tracking a construction project. The method is developed by calculating equations for two of project’s performance variables, namely net present value (NPV) and duration till operating (T₀). Equations for three variables used to determine NPV and T₀, namely design duration (TD), construction duration (TC), and construction costs (C₀) are further developed. The variables used to determine TD, TC, and C₀ are scaled by the amount of overlap of the project's design and construction phases according to anecdotal evidence. Deriving the moments of the truncated Taylor's series expansion of NPV and T₀ (as well as TD, TC, and C₀) is performed to determine probabilistic information about these variables. The probabilistic set of solutions is compared to the deterministic solutions. Results of the application of the methodology to an example showed that the benefits of fast-tracking were very sensitive to productivity losses. Though some deficiencies were discovered, the methodology exhibited many of the effects cited in the literature.
Η χρήση των προηγμένων τηλεπικοινωνιακών δικτύων και υπολογιστικών συστημάτων για τη διαρκή γλωσσική κατάρτιση και εξειδίκευση
Creators: name: Γαλατσοπούλου, Φανή
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Εκπαίδευση από απόσταση
Ρόλοι δασκάλου-μαθητή
Distance learning
Virtual schools
Instructional design models

description: Το θέμα της παρούσας διατριβής είναι η χρήση των προηγμένων τηλεπικοινωνιακών δικτύων και υπολογιστικών συστημάτων για τη διαρκή εκπαίδευση και εξειδίκευση σε περιβάλλοντα διδασκαλίας ξένης γλώσσας. Στόχος της είναι η διερεύνηση των στάσεων της νέας γενιάς δασκάλων απέναντι στη χρήση των υπολογιστικών συστημάτων και δικτύων κατά τη γλωσσική εκπαίδευση. Παράλληλα διερευνάται και η στάση των εκπαιδευομένων απέναντι στη χρήση τους, μέσω μιας μελέτης περίπτωσης στο Τμήμα Δημοσιογραφίας του Αριστοτελείου Πανεπιστήμιου, όπου παρέχεται στους φοιτητές ένα ολοκληρωμένο πρόγραμμα μαθημάτων εκμάθησης και ειδίκευσης στον δημοσιογραφικό λόγο σε τρεις ξένες γλώσσες. Στην αρχή της διατριβής γίνεται εκτεταμένη αναφορά στην πορεία της Γλωσσικής μάθησης με τη βοήθεια Η/Υ από τη δεκαετία του '60 μέχρι σήμερα και παρουσιάζονται τρία μοντέλα μάθησης γλώσσας με τη βοήθεια υπολογιστικών συστημάτων και δικτύων. Εξετάζονται, επιπλέον οι ρόλοι και οι στάσεις των διδασκόντων και διδασκομένων σε διδακτικά σενάρια που έχουν σχεδιαστεί σε διεθνές επίπεδο. Στη συνέχεια περιγράφεται η έρευνα που διεξήχθη και παρουσιάζεται η επεξεργασία των στατιστικών δεδομένων. Η διατριβή ολοκληρώνεται με παράθεση συμπερασμάτων και με διατύπωση προτάσεων για κάποια ζητήματα τα οποία θα μπορούσαν να αποτελέσουν τη βάση για μελλοντική έρευνα
description: The goal of the present dissertation is to examine the use of computers and networks in language teaching and learning. The dissertation consists of two relatively independent parts: Part I and Part II. Part I is a literature review of the history of CALL, and of the roles that teachers and learners play in CALL settings. It also examines three instructional design models and discusses the uses of various technologies and the educational scenarios that can be developed. Part II presents two empirical surveys carried out at the Aristotle University of Thessaloniki in order to identify the attitudes of the future language instructors and of the learners of a foreign language towards the use of computers and networks in language teaching and learning. Part II also analyzes and interprets the quantitative and qualitative data that were collected through questionnaires and participant observation, and it finally discusses the findings of the surveys and postulates suggestions for future study
{\sc CosmoNet}: fast cosmological parameter estimation in non-flat models using neural networks
Creators: name: Auld, T.
name: Bridges, M.
name: Hobson, M. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a further development of a method for accelerating the calculation of CMB power spectra, matter power spectra and likelihood functions for use in cosmological Bayesian inference. The algorithm, called {\sc CosmoNet}, is based on training a multilayer perceptron neural network. We compute CMB power spectra (up to $\ell=2000$) and matter transfer functions over a hypercube in parameter space encompassing the $4σ$ confidence region of a selection of CMB (WMAP + high resolution experiments) and large scale structure surveys (2dF and SDSS). We work in the framework of a generic 7 parameter non-flat cosmology. Additionally we use {\sc CosmoNet} to compute the WMAP 3-year, 2dF and SDSS likelihoods over the same region. We find that the average error in the power spectra is typically well below cosmic variance for spectra, and experimental likelihoods calculated to within a fraction of a log unit. We demonstrate that marginalised posteriors generated with {\sc CosmoNet} spectra agree to within a few percent of those generated by {\sc CAMB} parallelised over 4 CPUs, but are obtained 2-3 times faster on just a \emph{single} processor. Furthermore posteriors generated directly via {\sc CosmoNet} likelihoods can be obtained in less than 30 minutes on a single processor, corresponding to a speed up of a factor of $\sim 32$. We also demonstrate the capabilities of {\sc CosmoNet} by extending the CMB power spectra and matter transfer function training to a more generic 10 parameter cosmological model, including tensor modes, a varying equation of state of dark energy and massive neutrinos. {\sc CosmoNet} and interfaces to both {\sc CosmoMC} and {\sc Bayesys} are publically available at {\tt www.mrao.cam.ac.uk/software/cosmonet}.
description: 8 pages, submitted to MNRAS
Additional file 1 of The association between preoperative modified frailty index and postoperative complications in Chinese elderly patients with hip fractures
Creators: name: Shen, Yanjiao
name: Hao, Qiukui
name: Wang, Yuting
name: Chen, Xiaoyan
name: Jiang, Jiaojiao
name: Dong, Birong
name: Guyatt, Gordon
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: Mental Health

description: Additional file 1.
Οι ελληνογιουγκοσλαβικές σχέσεις από το 1923 έως το 1928
Creators: name: Κούλας, Αντώνιος
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Διπλωματική ιστορία
Μεσοπόλεμος
Σερβική Ελεύθερη Ζώνη
Μιχαλακόπουλος
Diplomatic History
Interwar Period
Serbian Free Zone
Michalacopoulos

description: Σκοπός της παρούσας εργασίας είναι να καλύψει πολύπλευρα τις ελληνογιουγκοσλαβικές σχέσεις από τη Συνθήκη της Λωζάννης μέχρι την επάνοδο του Βενιζέλου στη διακυβέρνηση της Ελλάδας, χρησιμοποιώντας για πρώτη φορά, εκτός του υλικού από τα ελληνικά αρχεία, και υλικό από τον γιουγκοσλαβικό τύπο. Η Ελλάδα μετά την Μικρασιατική καταστροφή βρισκόταν παντελώς απομονωμένη και για να βρει ερείσματα στράφηκε προς την Γιουγκοσλαβία, στηριζόμενη στην ελληνοσερβική συνθήκη συμμαχίας του 1913. Ομως η Γιουγκοσλαβία ήταν μεγάλο κράτος της περιοχής με κεντροευρωπαϊκό προσανατολισμό. Το ενδιαφέρον της προς το νότο εστιαζόταν μόνο σε εξασφάλιση πολεμικού υλικού και πολιτικών και οικονομικών ωφελημάτων. Αυτό φάνηκε έντονα καθ' όλη την περίοδο, όταν έθετε συνεχώς περισσότερα αιτήματα προς την Ελλάδα, προσφέροντας όμως ελάχιστα ανταλλάγματα. Ετσι η Αθήνα υποχρεώθηκε να ακολουθήσει ενεργή πολιτική με άλλες χώρες και άρχισε να εξέρχεται από την απομόνωσή της.
description: The purpose of this work is to cover multiraterally the Greek-Yugoslavian relations from the Lausanne Treaty until Venizelos' return to the Greek governing, using for the first time, besides material from the Greek archives, also material from the Yugoslavian archives and the Yugoslavian Press. Greece after Minor Asia's catastrophe was completely isolated and, in order to find support, turned to Yugoslavia, counting on the Greek-Serbian Peace Treaty of 1913. But Yugoslavia was a big country of the region with central-European orientation. Her interest for Southern Europe focused only on the ensurance of war material as well as political and economical advantages. This was strongly demonstrated during the whole period, when Yugoslavia continously made demands to Greece, offering little in return. So, Athens was forced to follow a proactive policy with other countries and started coming out of her isolation.
Van der Waals density functional: Self-consistent potential and the nature of the van der Waals bond
Creators: name: Thonhauser, T.
name: Cooper, Valentino R.
name: Li, Shen
name: Puzder, Aaron
name: Hyldgaard, Per
name: Langreth, David C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We derive the exchange-correlation potential corresponding to the nonlocal van der Waals density functional [M. Dion, H. Rydberg, E. Schroder, D. C. Langreth, and B. I. Lundqvist, Phys. Rev. Lett. 92, 246401 (2004)]. We use this potential for a self-consistent calculation of the ground state properties of a number of van der Waals complexes as well as crystalline silicon. For the latter, where little or no van der Waals interaction is expected, we find that the results are mostly determined by semilocal exchange and correlation as in standard generalized gradient approximations (GGA), with the fully nonlocal term giving little effect. On the other hand, our results for the van der Waals complexes show that the self-consistency has little effect at equilibrium separations. This finding validates previous calculations with the same functional that treated the fully nonlocal term as a post GGA perturbation. A comparison of our results with wave-function calculations demonstrates the usefulness of our approach. The exchange-correlation potential also allows us to calculate Hellmann-Feynman forces, hence providing the means for efficient geometry relaxations as well as unleashing the potential use of other standard techniques that depend on the self-consistent charge distribution. The nature of the van der Waals bond is discussed in terms of the self-consistent bonding charge.
description: submitted to Phys. Rev. B
The QUEST Data Processing Software Pipeline
Creators: name: Andrews, Peter
name: Baltay, Charles
name: Bauer, Anne
name: Ellman, Nancy
name: Jerke, Jonathan
name: Lauer, Rochelle
name: Rabinowitz, David
name: Silge, Julia
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A program that we call the QUEST Data Processing Software Pipeline has been written to process the large volumes of data produced by the QUEST camera on the Samuel Oschin Schmidt Telescope at the Palomar Observatory. The program carries out both aperture and PSF photometry, combines data from different repeated observations of the same portion of sky, and produces a Master Object Catalog. A rough calibration of the data is carried out. This program, as well as the calibration procedures and quality checks on the output are described.
description: 17 pages, 1 table, 8 figures
Collisions in a gas-rich white dwarf planetary debris disc
Creators: name: Swan, Andrew
name: Kenyon, Scott J.
name: Farihi, Jay
name: Dennihy, Erik
name: Gänsicke, Boris T.
name: Hermes, J. J.
name: Melis, Carl
name: von Hippel, Ted
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: WD 0145+234 is a white dwarf that is accreting metals from a circumstellar disc of planetary material. It has exhibited a substantial and sustained increase in 3-5 micron flux since 2018. Follow-up Spitzer photometry reveals that emission from the disc had begun to decrease by late 2019. Stochastic brightening events superimposed on the decline in brightness suggest the liberation of dust during collisional evolution of the circumstellar solids. A simple model is used to show that the observations are indeed consistent with ongoing collisions. Rare emission lines from circumstellar gas have been detected at this system, supporting the emerging picture of white dwarf debris discs as sites of collisional gas and dust production.
description: 9 pages, 5 figures; accepted to MNRAS
Cosmological dynamics of multifield dark energy
Creators: name: Eskilt, Johannes R.
name: Akrami, Yashar
name: Solomon, Adam R.
name: Vardanyan, Valeri
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We numerically and analytically explore the background cosmological dynamics of multifield dark energy with highly nongeodesic or "spinning" field-space trajectories. These extensions of standard single-field quintessence possess appealing theoretical features and observable differences from the cosmological standard model. At the level of the cosmological background, we perform a phase-space analysis and identify approximate attractors with late-time acceleration for a wide range of initial conditions. Focusing on two classes of field-space geometry, we derive bounds on parameter space by demanding viable late-time acceleration and the absence of gradient instabilities, as well as from the de Sitter swampland conjecture.
description: 19 pages, 12 figures. v2: Improved and published version
Theoretical study of quantum spin liquids in $S=1/2$ hyper-hyperkagome magnets: classification, heat capacity, and dynamical spin structure factor
Creators: name: Chern, Li Ern
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent experiments suggest a quantum spin liquid ground state in the material PbCuTe$_2$O$_6$, where $S=1/2$ moments are coupled by antiferromagnetic Heisenberg interactions into a three dimensional structure of corner sharing triangles dubbed the hyper-hyperkagome lattice. It exhibits a richer connectivity, and thus likely a stronger geometric frustration, than the relatively well studied hyperkagome lattice. Here, we investigate the possible quantum spin liquids in the $S=1/2$ hyper-hyperkagome magnet using the complex fermion mean field theory. Extending the results of a previous projective symmetry group analysis, we identify only two $\mathbb{Z}_2$ spin liquids and a $U(1)$ spin liquid that are compatible with the hyper-hyperkagome structure. The $U(1)$ spin liquid has a spinon Fermi surface. For the $\mathbb{Z}_2$ spin liquids, one has a small excitation gap, while the other is gapless and proximate to the $U(1)$ spin liquid. We show that the gapped and gapless spin liquids can in principle be distinguished by heat capacity measurements. Moreover, we calculate the dynamical spin structure factors of all three spin liquids and find that they highly resemble the inelastic neutron scattering spectra of PbCuTe$_2$O$_6$. Implications of our work to the experiments, as well as its relations to the existing theoretical studies, are discussed.
description: 12 pages, 6 figures, 4 tables
Comparison of Ising magnet on directed versus undirected Erdos-Renyi and scale-free network
Creators: name: Sumour, M. A.
name: El-Astal, A. H.
name: Lima, F. W. S.
name: Shabat, M. M.
name: Khalil, H. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Scale-free networks are a recently developed approach to model the interactions found in complex natural and man-made systems. Such networks exhibit a power-law distribution of node link (degree) frequencies n(k) in which a small number of highly connected nodes predominate over a much greater number of sparsely connected ones. In contrast, in an Erdos-Renyi network each of N sites is connected to every site with a low probability p (of the orde r of 1/N). Then the number k of neighbors will fluctuate according to a Poisson distribution. One can instead assume that each site selects exactly k neighbors among the other sites. Here we compare in both cases the usual network with the directed network, when site A selects site B as a neighbor, and then B influences A but A does not influence B. As we change from undirected to directed scale-free networks, the spontaneous magnetization vanishes after an equilibration time following an Arrhenius law, while the directed ER networks have a positive Curie temperature.
description: 10 pages including all figures, for Int. J, Mod. Phys. C 18
Galaxy Stellar Mass Functions from z~10 to z~6 using the Deepest Spitzer/IRAC Data: No Significant Evolution in the Stellar-to-Halo Mass Ratio of Galaxies in the First Gyr of Cosmic Time
Creators: name: Stefanon, Mauro
name: Bouwens, Rychard J.
name: Labbé, Ivo
name: Illingworth, Garth D.
name: Gonzalez, Valentino
name: Oesch, Pascal A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new stellar mass functions at $z\sim6$, $z\sim7$, $z\sim8$, $z\sim9$ and, for the first time, $z\sim10$, constructed from $\sim800$ Lyman-Break galaxies previously identified over the XDF/UDF, parallels and the five CANDELS fields. Our study is distinctive due to (1) the much deeper ($\sim200$ hour) wide-area Spitzer/IRAC imaging at $3.6μ$m and $4.5μ$m from the GOODS Re-ionization Era wide Area Treasury from Spitzer (GREATS) program and (2) consideration of $z\sim6-10$ sources over a $3\times$ larger area than previous HST+Spitzer studies. The Spitzer/IRAC data enable $\ge2σ$ rest-frame optical detections for an unprecedented $50\%$ of galaxies down to a stellar mass limit of $\sim10^{8}\mathcal{M}_\odot$ across all redshifts. Schechter fits to our volume densities suggest a combined evolution in characteristic mass $\mathcal{M}^*$ and normalization factor $ϕ^*$ between $z\sim6$ and $z\sim8$. The stellar mass density (SMD) increases by $\sim1000\times$ in the $\sim500$ Myr between $z\sim10$ and $z\sim6$, with indications of a steeper evolution between $z\sim10$ and $z\sim8$, similar to the previously-reported trend of the star-formation rate density. Strikingly, abundance matching to the Bolshoi-Planck simulation indicates halo mass densities evolving at approximately the same rate as the SMD between $z\sim10$ and $z\sim4$. Our results show that the stellar-to-halo mass ratios, a proxy for the star-formation efficiency, do not change significantly over the huge stellar mass build-up occurred from $z\sim10$ to $z\sim6$, indicating that the assembly of stellar mass closely mirrors the build-up in halo mass in the first $\sim1$ Gyr of cosmic history. JWST is poised to extend these results into the "first galaxy" epoch at $z\gtrsim10$.
description: Submitted to ApJ, comments welcome
The Fermi surface and f-valence electron count of UPt3
Creators: name: McMullan, G. J.
name: Rourke, P. M. C.
name: Norman, M. R.
name: Huxley, A. D.
name: Doiron-Leyraud, N.
name: Flouquet, J.
name: Lonzarich, G. G.
name: McCollam, A.
name: Julian, S. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Combining old and new de Haas-van Alphen (dHvA) and magnetoresistance data, we arrive at a detailed picture of the Fermi surface of the heavy fermion superconductor UPt3. Our work was partially motivated by a new proposal that two 5f valence electrons per formula unit in UPt3 are localized by correlation effects -- agreement with previous dHvA measurements of the Fermi surface was invoked in its support. Comprehensive comparison with our new observations shows that this 'partially localized' model fails to predict the existence of a major sheet of the Fermi surface, and is therefore less compatible with experiment than the originally proposed 'fully itinerant' model of the electronic structure of UPt3. In support of this conclusion, we offer a more complete analysis of the fully itinerant band structure calculation, where we find a number of previously unrecognized extremal orbits on the Fermi surface.
description: 23 pages, 12 figures, latex, iopart class
Evaluation of microbial diversity of Jiangshui from the Ningxia Hui autonomous region in China
Creators: name: Li, Puyu
name: Ju, Ning
name: Zhang, Shengzhuo
name: Wang, Yuanyuan
name: Luo, Yulong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified

description: Jiangshui is a traditional spontaneously fermented food in Northwest China; however, there is a lack of relevant documentation of Jiangshui from the Ningxia Hui Autonomous Region (NHAR), which is an important region in Northwest China. This study used the MIDI microbial identification system (MIDI MIS) and found that bacteria accounted for the highest proportion in NHAR Jiangshui and further gram-positive bacteria were higher than gram-negative bacteria. Fungi were the second-largest proportion. Furthermore, Illumina Novaseq sequencing technology was used to examine the bacterial diversity in NHAR Jiangshui. Firmicutes and Proteobacteria were the dominant phyla and Lactobacillus was the dominant genus. Also, there were some opportunistic pathogens in minor proportion. More importantly, the samples from different regions and fermentation time showed insignificant differences in the bacterial community. This study presents a new insight of microbial community structure analysis of fermented foods.
Cadmium Zinc Telluride Detectors for a Next-Generation Hard X-ray Telescope
Creators: name: Tang, Jason
name: Kislat, Fabian
name: Krawczynski, Henric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computational Physics (physics.comp-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We are currently developing Cadmium Zinc Telluride (CZT) detectors for a next-generation space-borne hard X-ray telescope which can follow up on the highly successful NuSTAR (Nuclear Spectroscopic Telescope Array) mission. Since the launch of NuSTAR in 2012, there have been major advances in the area of X-ray mirrors, and state-of-the-art X-ray mirrors can improve on NuSTAR's angular resolution of ~1 arcmin Half Power Diameter (HPD) to 15" or even 5" HPD. Consequently, the size of the detector pixels must be reduced to match this resolution. This paper presents detailed simulations of relatively thin (1 mm thick) CZT detectors with hexagonal pixels at a next-neighbor distance of 150 $μ$m. The simulations account for the non-negligible spatial extent of the deposition of the energy of the incident photon, and include detailed modeling of the spreading of the free charge carriers as they move toward the detector electrodes. We discuss methods to reconstruct the energies of the incident photons, and the locations where the photons hit the detector. We show that the charge recorded in the brightest pixel and six adjacent pixels suffices to obtain excellent energy and spatial resolutions. The simulation results are being used to guide the design of a hybrid application-specific integrated circuit (ASIC)-CZT detector package.
description: 13 pages, 11 figures. Accepted for publication in Astroparticle Physics
Spectral properties of a Rydberg atom immersed in a Bose-Einstein condensate
Creators: name: Middelkamp, Stephan
name: Lesanovsky, Igor
name: Schmelcher, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The electronic spectrum of a Rydberg atom immersed in a Bose-Einstein condensate is investigated. The Heisenberg equations of motions for the condensate and the Rydberg atom are derived. Neglecting the backaction of the Rydberg atom onto the condensate decouples the equations describing the condensate and Rydberg atom. In this case the spectral structure of the Rydberg atom is completely determined by an effective potential which depends on the density distribution of the condensate. We study the spectral properties for the situation of an isotropic harmonic and anharmonic as well as axially symmetric confinement. In the latter case an intriguing analogy with Rydberg atoms in magnetic fields is encountered.
A proof of simultaneous linearization with a polylog estimate
Creators: name: Kawahira, Tomoki
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 37F99

description: We give an alternative proof of simultaneous linearization recently shown by T.Ueda, which connects the Schröder equation and the Abel equation analytically. Indeed, we generalize Ueda's original result so that we may apply it to the parabolic fixed points with multiple petals. As an application, we show a continuity result on linearizing coordinates in complex dynamics.
description: 10 pages,1 fugure
Rough translation of file 029_B (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio file VP-140715-06: rough translation (30 second to 3-4 minute chunks) of file 029_B (tape 29, side B) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from start to 3:52; no transcription in this session, translation only. Due to re-numbering, tape 029_B has been assigned to the CLA item number LA256.029, audio file LA256.029B.
Prospects in Analytical Atomic Spectrometry
Creators: name: Bol'shakov, A. A.
name: Ganeev, A. A.
name: Nemets, V. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Tendencies in five main branches of atomic spectrometry (absorption, emission, mass, fluorescence and ionization spectrometry) are considered. The first three techniques are the most widespread and universal, with the best sensitivity attributed to atomic mass spectrometry. In the direct elemental analysis of solid samples, the leading roles are now conquered by laser-induced breakdown and laser ablation mass spectrometry, and the related techniques with transfer of the laser ablation products into inductively-coupled plasma. Advances in design of diode lasers and optical parametric oscillators promote developments in fluorescence and ionization spectrometry and also in absorption techniques where uses of optical cavities for increased effective absorption pathlength are expected to expand. Prospects for analytical instrumentation are seen in higher productivity, portability, miniaturization, incorporation of advanced software, automated sample preparation and transition to the multifunctional modular architecture. Steady progress and growth in applications of plasma- and laser-based methods are observed. An interest towards the absolute (standardless) analysis has revived, particularly in the emission spectrometry.
description: Proofread copy with an added full reference list of 279 citations. A pdf version of the final published review may be requested from Alexander Bol'shakov