cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Η περί τριαδικού Θεού διδασκαλία του Αγίου Νικοδήμου του Αγιορείτου
Creators: name: Πετρίδης, Μάριος Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Αγιος Νικόδημος Αγιορείτης
Το κίνημα των Κολλυβάδων
Τριαδολογία
St. Nicodemus the Hagiorite
The movement of the Kolivades
The doctrine of the Trinity

description: Ο μεγάλος αυτός διδάσκαλος της Εκκλησίας και του γένους μας άγ. Νικόδημος ο Αγιορείτης, έζησε και έδρασε τον 18ο αιώνα και αρχές του 19ου. Με το πλούσιο συγγραφικό του έργο και την έντονη θεολογική του δραστηριότητα, συνέβαλε τα μέγιστα στην στήριξη της Εκκλησίας και την απόκρουση του δυτικού φρονήματος. Με την πιστή του αφοσίωση στους πατέρες και στις παραδόσεις, αντιστέκεται στις ουμανιστικές τάσεις τις εποχής του. Υπήρξε ένας από τους εκπροσώπους και ασφαλώς ο κυριότερος θεολόγος του «κινήματος των Κολλυβάδων», «αρχηγέτης» και οδηγός ορθοδοξίας. Στη παρούσα μελέτη αντλήσαμε μέσα από τα κείμενα του αγ. Νικοδήμου, όσο το δυνατό περισσότερες πληροφορίες μπορέσαμε από τη δογματική του διδασκαλία και τις συστηματοποιήσαμε ώστε να διαφανεί η πλούσια σε δογματική, Τριαδολογία, Χριστολογία και Πνευματολογία του αγίου, στηριζόμενη πάνω στους έγκριτους Πατέρες της Εκκλησίας.
description: This great teacher of the Church and our Nation Ag. Nicodemus from the Athos mountain, lived in the 18th century and early 19th. With his extensive writings and his intense theological activity, contributed greatly to the support of the Church and the repulse of the western spirit. With his faithful devotion to fathers and traditions, he resisted to the tendencies of his era, and to the Western religious influence of Protestant and Catholic. He was one of the representatives and certainly the foremost theologian of the “Philokalian regeneration” and guide of the Orthodox Church. In this study we took, through the texts of St. Nicodemus, as many information we could from his dogmatic teachings, and tidied them, in order to show the rich doctrinal, Triadology, Christology and Pneumatology of the saints, based on the distinguished Fathers of the Church and the Orthodox Tradition.
Επίδραση της δομής του υποστρώματος στην ανάπτυξη του παθογόνου μικροοργανισμού Listeria monocytogenes:
Creators: name: Ασπρίδου, Ζαφειρώ Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Δομή υποστρώματος
Πηκτή
Listeria monocytogenes
Substrate structure
Gel

description: Σκοπός της παρούσας μελέτης ήταν η μελέτη της επίδρασης της δομής του υποστρώματος στην ανάπτυξη του παθογόνου Listeria monocytogenes. Συγκεκριμένα, μελετήθηκε η κινητική της ανάπτυξης του παθογόνου σε υγρό θρεπτικό υπόστρωμα και σε διαφορετικά συστήματα υδροκολλοειδών που σχηματίζουν πηκτές και αξιολογήθηκε η επίδραση του κάθε συστήματος στην ανάπτυξη του παθογόνου μικροοργανισμού καθώς και των παραγόντων που την επηρεάζουν. Τα υδροκολλοειδή που χρησιμοποιήθηκαν για την προσομοίωση της διαφορετικής δομής των τροφίμων ήταν το αλγινικό νάτριο και η ζελατίνη σε διάφορες συγκεντρώσεις ενώ τα αποτελέσματα των πειραματισμών αξιολογήθηκαν σε μοντέλο γαλακτοκομικό προϊόν με διάφορες συγκεντρώσεις στερεών συστατικών. Τα αποτελέσματα έδειξαν ότι η ανάπτυξη του παθογόνου L. monocytogenes ήταν ταχύτερη σε υγρό θρεπτικό υπόστρωμα σε σχέση με την ανάπτυξη σε πηκτές ανεξαρτήτως του παράγοντα πηκτωματοποίησης. Επιπλέον βρέθηκε ότι η ανάπτυξη του παθογόνου μικροοργανισμού ήταν διαφορετική στα συστήματα των πηκτών λόγω της διαφορετικής μικροδομής του κάθε συστήματος, όπως έδειξαν και οι ρεολογικές αναλύσεις.
description: The effect of growth medium structure induced by gelation on the growth of the food- borne pathogen Listeria monocytogenes was studied. The main objectives were i) to study the growth kinetics of L. monocytogenes when inoculated in gels formed from different hydrocolloids ii) to evaluate the influence of each gelling system on the growth of the pathogen and iii) to investigate the factors affecting the influence of structure on microbial growth. Aiming at evaluating the growth kinetics of L. monocytogenes, a series of experiments with liquid substrate and gels inoculated with the pathogen were performed. For simulating the different structures of foods, sodium alginate and gelatine were used at different concentrations. Furthermore, the results of these experiments were evaluated using a model dairy product at different solid concentrations. The results of the study showed that the pathogen’s growth was faster in the liquid substrate than in the gelled medium regardless of the gelling agent added. In addition, each gelling system affected the pathogen’s growth in a different way due to the different microstructure of each system, as rheological analysis showed.
Sound Event Detection with Binary Neural Networks on Tightly Power-Constrained IoT Devices
Creators: name: Cerutti, Gianmarco
name: Andri, Renzo
name: Cavigelli, Lukas
name: Magno, Michele
name: Farella, Elisabetta
name: Benini, Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Sound event detection (SED) is a hot topic in consumer and smart city applications. Existing approaches based on Deep Neural Networks are very effective, but highly demanding in terms of memory, power, and throughput when targeting ultra-low power always-on devices. Latency, availability, cost, and privacy requirements are pushing recent IoT systems to process the data on the node, close to the sensor, with a very limited energy supply, and tight constraints on the memory size and processing capabilities precluding to run state-of-the-art DNNs. In this paper, we explore the combination of extreme quantization to a small-footprint binary neural network (BNN) with the highly energy-efficient, RISC-V-based (8+1)-core GAP8 microcontroller. Starting from an existing CNN for SED whose footprint (815 kB) exceeds the 512 kB of memory available on our platform, we retrain the network using binary filters and activations to match these memory constraints. (Fully) binary neural networks come with a natural drop in accuracy of 12-18% on the challenging ImageNet object recognition challenge compared to their equivalent full-precision baselines. This BNN reaches a 77.9% accuracy, just 7% lower than the full-precision version, with 58 kB (7.2 times less) for the weights and 262 kB (2.4 times less) memory in total. With our BNN implementation, we reach a peak throughput of 4.6 GMAC/s and 1.5 GMAC/s over the full network, including preprocessing with Mel bins, which corresponds to an efficiency of 67.1 GMAC/s/W and 31.3 GMAC/s/W, respectively. Compared to the performance of an ARM Cortex-M4 implementation, our system has a 10.3 times faster execution time and a 51.1 times higher energy-efficiency.
description: 6 pages conference
WP5-09-ABI - Multi-Sensor Gateway
Creators: name: Tiziana Fanni
name: Giuseppe Meloni
name: Maria Katiuscia Zedda
Publisher: name: Zenodo
Year: 2022
Subjects: IoT
embedded systems
smart gateway

description: Multi-Sensor Gateway provides a unified management system, contributing to the secure and safe integration of a cooperative embedded system in a system-of-systems. It is based on the Abinsula Embedded Linux Distribution (Ability).
Electron transport through dipyrimidinyl-diphenyl diblock molecular wire: protonation effect
Creators: name: Li, Zhenyu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, rectifying direction inversion has been observed in dipyrimidinyl-diphenyl (PMPH) diblock molecular wire [J. Am. Chem. Soc. (2005) 127, 10456], and a protonation mechanism was suggested to explain this interesting phenomena. In this paper, we study the protonation effect on transport properties of PMPH molecule by first principles calculations. No significant rectification is found for the pristine diblock molecular wire. Protonation leads to conductance enhancement and rectification. However, for all considered junctions with rectifying effect, the preferential current directions are samely from dipyrimidinyl side to diphenyl side. Effect of molecule-electrode anchoring geometry is studied, and it is not responsible for the discrepancy between experiment and theory.
description: 17 pages, 8 figures
Experimental Observation of Modulation Instability and Optical Spatial Soliton Arrays in Soft Condensed Matter
Creators: name: Reece, P. J.
name: Wright, E. M.
name: Dholakia, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this Letter we report observations of optically induced self-organization of colloidal arrays in the presence of un-patterned counter-propagating evanescent waves. The colloidal arrays formed along the laser propagation-axis are shown to be linked to the break-up of the incident field into optical spatial solitons, the lateral spacing of the arrays being related to modulation instability of the soft condensed matter system.
description: 16 pages, 3 figures
A Search for FeH in Hot-Jupiter Atmospheres with High-Dispersion Spectroscopy
Creators: name: Kesseli, Aurora
name: Snellen, I. A. G.
name: Alonso-Floriano, F. J.
name: Molliere, P.
name: Serindag, D. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Most of the molecules detected thus far in exoplanet atmospheres, such as water and CO, are present for a large range of pressures and temperatures. In contrast, metal hydrides exist in much more specific regimes of parameter space, and so can be used as probes of atmospheric conditions. Iron hydride (FeH) is a dominant source of opacity in low-mass stars and brown dwarfs, and evidence for its existence in exoplanets has recently been observed at low resolution. We performed a systematic search of archival CARMENES near-infrared data for signatures of FeH during transits of 12 exoplanets. These planets span a large range of equilibrium temperatures (600 $\lesssim T_{eq} \lesssim$ 4000K) and surface gravities (2.5 $\lesssim \mathrm{log} g \lesssim$ 3.5). We did not find a statistically significant FeH signal in any of the atmospheres, but obtained potential low-confidence signals (SNR$\sim$3) in two planets, WASP-33b and MASCARA-2b. Previous modeling of exoplanet atmospheres indicate that the highest volume mixing ratios (VMRs) of 10$^{-7}$ to 10$^{-9}$ are expected for temperatures between 1800 and 3000K and log $g \gtrsim3$. The two planets for which we find low-confidence signals are in the regime where strong FeH absorption is expected. We performed injection and recovery tests for each planet and determined that FeH would be detected in every planet for VMRs $\geq 10^{-6}$, and could be detected in some planets for VMRs as low as 10$^{-9.5}$. Additional observations are necessary to conclusively detect FeH and assess its role in the temperature structures of hot Jupiter atmospheres.
description: Accepted to AAS journals
Αξιολόγηση της ακρίβειας των παγκόσμιων ψηφιακών μοντέλων εδάφους ASTER και SRTM για τον Ελλαδικό χώρο με χρήση ετερογενών υψομετρικών δεδομένων
Creators: name: Καμπούρης, Βασίλειος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Ψηφιακά μοντέλα εδάφους
Αξιολόγηση ακρίβειας
Ελλάδα
Digital elevation models
Accuracy assessment
Greece

description: Η λεπτομερής γνώση της γήινης επιφάνειας αποτελεί αναγκαίο εργαλείο για πολ-λές γεωεπιστήμες. Η ανάπτυξη της τηλεπισκόπησης και των σύγχρονων μεθόδων παραγωγής ψηφιακών μοντέλων εδάφους, οδήγησε την επιστημονική και την βιομη-χανική κοινότητα στη δημιουργία δύο σύγχρονων ψηφιακών μοντέλων εδάφους παγκόσμιας κάλυψης και υψηλής ακρίβειας. Πρώτο κατά χρονολογική σειρά είναι το SRTM DEM (2003), παράγωγο προϊόν της ομώνυμης δορυφορικής αποστολής SRTM (2000), με διακριτική ικανότητα 1 arcsec για όλη την περιοχή των Η.Π.Α. και 3 arcsec για τον υπόλοιπο κόσμο, εγκαινίασε τον κατάλογο των παγκόσμιων ψηφια-κών μοντέλων εδάφους υψηλής ακρίβειας, καλύπτοντας το 80% της γήινης επιφάνε-ιας. Ακολούθησε το ASTER GDEM (2009), παράγωγο προϊόν της εν ενεργεία δο-ρυφορικής αποστολής TERRA (1999), με διακριτική ικανότητα 1 arcsec για όλο τον κόσμο και κάλυψη της συνολικής γήινης επιφάνειας κατά 99%. Η παρούσα εργασία πραγματεύεται τη σύγκριση των δύο σύγχρονων παγκόσμιων ψηφιακών μοντέλων εδάφους, ASTER GDEM και SRTM DEM, τόσο μεταξύ τους όσο και με ετερογενή υψομετρικά δεδομένα, που αποτελούνται από ορθομετρικά υψόμετρα, τριγωνομετ-ρικών σημείων της ΓΥΣ. Τα δεδομένα καλύπτουν σχεδόν όλες τις περιοχές του ελ-λαδικού χώρου και οι συγκρίσεις τους στοχεύουν στη στατιστική αξιολόγηση της ακρίβειας των ASTER GDEM και SRTM DEM σε σχέση με το εθνικό υψομετρικό δίκτυο, το οποίο υλοποιείται από τα τριγωνομετρικά σημεία της ΓΥΣ έως και σήμερα.
description: The detailed knowledge of the Earth's surface is a necessary tool for most of Geo-sciences. The development of Remote Sensing and new DEM’s producing methods, led the scientific and industrial community in the creation of two modern Digital El-evation Models which provide global coverage and high accuracy data. First in chronological order is SRTM DEM (1st version released in 2003), derivative product of the homonymous satellite mission SRTM (2000). SRTM DEM provides elevation data with a resolution of 1 arcsec for U.S.A territory and 3 arcsec for the rest of the world, covering 80% of Earth's surface. ASTER GDEM comes second (1st version released in 2009), derivative product of the active satellite mission TERRA, provid-ing elevation data too, with a resolution of 1 arcsec, covering 99% Earth’s surface. This Master Thesis compares ASTER GDEM's and SRTM DEM's vertical data with heterogeneous elevation data, consisting of orthometric heights of 1542 fixed base points of GYS. The available data cover almost all Hellenic territory and comparisons aim to assess the vertical accuracy of ASTER GDEM and SRTM DEM.
Learning and Upgrading in Global Value Chains: An Analysis of India's Manufacturing Sector
Creators: name: Dutta, Sourish
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: The topic of my research is "Learning and Upgrading in Global Value Chains: An Analysis of India's Manufacturing Sector". To analyse India's learning and upgrading through position, functions, specialisation & value addition of manufacturing GVCs, it is required to quantify the extent, drivers, and impacts of India's Manufacturing links in GVCs. I have transformed this overall broad objective into three fundamental questions: (1) What is the extent of India's Manufacturing Links in GVCs? (2) What are the determinants of India's Manufacturing Links in GVCs? (3) What are the impacts of India's Manufacturing Links in GVCs? These three objectives represent my three chapters in my PhD thesis.
description: 26 pages, PhD Proposal
Εφαρμογές της Θεωρίας Παιγνίων στην Διαχείριση της Εφοδιαστικής Αλυσίδας
Creators: name: Ιωαννίδου, Μαρία Αγησιλάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Θεωρία Παιγνίων
Διαχείριση Εφοδιαστικής Αλυσίδας
Εφημεριδοπώλης
Game Theory
Supply Chain Management
the newsvendor problem

description: Στόχος της συγκεκριμένης εργασίας ήταν η μελέτη των εφαρμογών της Θεωρίας Παιγνίων στη Διαχείριση της Εφοδιαστικής Αλυσίδας. Αρχικά παρουσιάζονται ορισμοί και κάποιες βασικές έννοιες της Διαχείρησης της Εφοδιαστικής Αλυσίδας. Ακόμη, αναφέρονται τα τμήματα και τα επίπεδα στα οποία χωρίζεται και τα πλεονεκτήματα που υπάρχουν χρησιμοποιώντας την Διαχείριση της Εφοδιαστικής Αλυσίδας. Στη συνέχεια εισάγονται οι ορισμοί, τα τμήματα και οι κατηγορίες στις οποίες χωρίζεται η Θεωρία Παιγνίων. Στο επόμενο κεφάλαιο αναφέρεται ποια είναι η συσχέτιση της Θεωρίας Παιγνίων με τη Διαχείρηση Εφοδιαστικής Αλυσίδας. Η εργασία κλείνει με την ανάλυση του προβλήματος του Εφημεριδοπώλη.
description: This thesis aims to study the applications of Game Theory in Supply Chain Management. We begin by presenting definitions and some basic elements of Supply Chain Management. Also, we refed the sections and levels in which it is seperated and the benefits by using the Supply Chain Management. Next we introduce definitions, sections and categories in which it is seperated the Game Theory. The next chapter refers to the relationship between Game Theory and Supply Chain Management. We conclude with an analysis of the newsvendor problem.
การจัดการความปลอดภัยของห้องปฏิบัติการตามมาตรฐาน ESPReL กรณีศึกษา ห้องปฏิบัติการไมโครเทคนิค คณะวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยราชภัฏเพชรบุรี
Creators: name: ปริศนา พันธ์งาม
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: มาตรฐานESPReL
การจัดการความปลอดภัยห้องปฏิบัติการ
ห้องปฏิบัติการไมโครเทคนิค

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 51-66
Loop quantum cosmology from an alternative Hamiltonian. II. Including the Lorentzian term
Creators: name: Yang, Jinsong
name: Zhang, Cong
name: Ma, Yongge
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The scheme of using the Chern-Simons action to regularize the gravitational Hamiltonian constraint is extended to including the Lorentzian term in the $k=0$ cosmological model. The Euclidean term and the Lorenzian term are thus regularized separately mimicking the treatment of full loop quantum gravity. The new quantum dynamics for the spatially flat Friedmann-Robertson-Walker model with a massless scalar field as an emergent time is studied. By semiclassical analysis, the effective Hamiltonian constraint is obtained, which indicates that the new quantum dynamics has the correct classical limit. The classical big-bang singularity is again replaced by a quantum bounce. Similar to the case of quantizing only the Euclidean term, the backward evolution of the cosmological model determined by the new effective Hamiltonian will be bounced to an asymptotic de Sitter universe coupled to a massless scalar field, while the problem of negative energy density of matter in the former case is resolved.
description: 12 pages, 5 figures
Fusion products of Kirillov-Reshetikhin modules and fermionic multiplicity formulas
Creators: name: Ardonne, Eddy
name: Kedem, Rinat
Publisher: name: arXiv
Year: 2006
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We give a complete description of the graded multiplicity space which appears in the Feigin-Loktev fusion product [FL99] of graded Kirillov-Reshetikhin modules for all simple Lie algebras. This construction is used to obtain an upper bound formula for the fusion coefficients in these cases. The formula generalizes the case of g=A_r [AKS06], where the multiplicities are generalized Kostka polynomials [SW99,KS02]. In the case of other Lie algebras, the formula is the the fermionic side of the X=M conjecture [HKO+99]. In the cases where the Kirillov-Reshetikhin conjecture, regarding the decomposition formula for tensor products of KR-modules, has been been proven in its original, restricted form, our result provides a proof of the conjectures of Feigin and Loktev regarding the fusion product multiplicites.
description: 22 pages; v2: minor changes; v3: exposition clarified
Hamza Bey Τζαμί (Αλκαζάρ) Θεσσαλονίκης. Αποτίμηση κατασκευαστικών φάσεων φέροντος οργανισμού. Μη γραμμική ανάλυση με το πρόγραμμα ADINA.
Creators: name: Δαβίλλα, Φωτεινή Ανδρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Αλκαζάρ
γραμμική
αποτίμηση
Hamza
ADINA
valuation

description: Το αντικείμενο της εργασίας είναι το Hamza Bey Τζαμί στη Θεσσαλονίκη. Στόχος της εργασίας είναι η αποτίμηση της φέρουσας ικανότητας των διαδοχικών κατασκευαστικών φάσεων του μνημείου, μέσα από μη γραμμική ανελαστική ανάλυση. Λόγω του μεγέθους και της πολυπλοκότητας του κτιριακού συγκροτήματος, η μελέτη περιορίσθηκε μόνο στην αρχική μεγάλη τετραγωνική αίθουσα που καλύπτεται με οκταγωνικό τύμπανο και ημισφαιρικό θόλο. Η προσομοίωση και οι αναλύσεις έγιναν με το πρόγραμμα ADINA με θεώρηση ανελαστικών νόμων για την τοιχοποιία και κριτήριο αστοχίας υλικού Drucker – Prager. Η διακριτοποίηση των τοιχοποιιών πραγματοποιήθηκε με τρισδιάστατα πεπερασμένα στοιχεία. Η επιλογή αυτή επιτρέπει τη διαφοροποίηση των μηχανικών ιδιοτήτων κατά το πάχος με χωρισμό της τρίστρωτης τοιχοποιίας σε επί μέρους ζώνες. Πραγματοποιήθηκαν αναλύσεις απόκρισης του φορέα υπό κατακόρυφα φορτία για τις διάφορες κατασκευαστικές φάσεις του φέροντος οργανισμού καθώς και αναλύσεις απόκρισης υπό αναλογικά αυξανόμενα φορτία βαρύτητας, μέχρι να επιτευχθεί κατάρρευση του φορέα. Στη συνέχεια πραγματοποιήθηκαν αναλύσεις απόκρισης υπό σεισμικά φορτία. Η σεισμική δράση προσομοιώθηκε σε όρους χρονοϊστοριών επιτάχυνσης.
description: The theme of this diploma thesis is the building of the Hamza Bey Camii in Thessaloniki. The present thesis deals with the valuation of the bearing capacity of each structural phase of the monument, through a non-linear inelastic analysis. The size and the structural complexity of the monument, led to the decision to restrict the study ‘s theme to the square, in the ground plan, domed prayer hall. ADINA finite element analysis program has been chosen for the simulation and the analysis of the monument. There has been used the Drucker –Prager material model for the 3D elements. Aiming to a simulation as exact as possible, and because of the building’s thick masonry, it has been simulated by 3D solid finite elements. The masonry is created by three vertical zones, each of which consists of a different type of material. Through a static analysis, was examined the monument ‘s behaviour , during each structural phase. In addition, the proposed model has been studied for the case of proportionally increasing static gravity loads, until a collapse mechanism is achieved. The inelastic seismic response of the model has also been studied due to the action of three acceleration components.
TU Wien Research Data @ InvenioRDM Community Workshop 2025
Creators: name: Moser, Maximilian
Publisher: name: Zenodo
Year: 2025
Subjects: InvenioRDM
TU Wien Research Data
InvenioRDM Partner Meeting 2025
Instance Rodeo

description: A short presentation about TU Wien Research Data for the Instance Rodeo at the InvenioRDM Community Workshop 2025 in Hamburg, Germany.

It showcases the customizations that were applied to InvenioRDM to turn it into TU Wien Research Data, and provides some more contextual information about the instance.
High accuracy transit photometry of the planet OGLE-TR-113b with a new deconvolution-based method
Creators: name: Gillon, M.
name: Pont, F.
name: Moutou, C.
name: Bouchy, F.
name: Courbin, F.
name: Sohy, S.
name: Magain, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A high accuracy photometry algorithm is needed to take full advantage of the potential of the transit method for the characterization of exoplanets, especially in deep crowded fields. It has to reduce to the lowest possible level the negative influence of systematic effects on the photometric accuracy. It should also be able to cope with a high level of crowding and with large scale variations of the spatial resolution from one image to another. A recent deconvolution-based photometry algorithm fulfills all these requirements, and it also increases the resolution of astronomical images, which is an important advantage for the detection of blends and the discrimination of false positives in transit photometry. We made some changes to this algorithm in order to optimize it for transit photometry and used it to reduce NTT/SUSI2 observations of two transits of OGLE-TR-113b. This reduction has led to two very high precision transit light curves with a low level of systematic residuals, used together with former photometric and spectroscopic measurements to derive new stellar and planetary parameters in excellent agreement with previous ones, but significantly more precise.
description: 8 pages, 4 figures
Thermopower of Kondo Effect in Single Quantum Dot Systems with Orbital at Finite Temperatures
Creators: name: Sakano, R.
name: Kita, T.
name: Kawakami, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the thermopower due to the orbital Kondo effect in a single quantum dot system by means of the noncrossing approximation. It is elucidated how the asymmetry of tunneling resonance due to the orbital Kondo effect affects the thermopower under gate-voltage and magnetic-field control.
description: 4 pages, 4 figures, proceeding of Second International Symposium on Nanometer-Scale Quantum Physics
A Field-Theoretic Model for Chemotaxis in Run and Tumble Particles
Creators: name: Chatterjee, Purba
name: Goldenfeld, Nigel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this paper we develop a field-theoretic description for run and tumble chemotaxis, based on a density functional description of crystalline materials modified to capture orientational ordering. We show that this framework, with its in-built multi-particle interactions, soft-core repulsion and elasticity is ideal for describing continuum collective phases with particle resolution, but on diffusive timescales. We show that our model exhibits particle aggregation in an externally imposed constant attractant field, as is observed for phototactic or thermotactic agents. We also show that this model captures particle aggregation through self-chemotaxis, an important mechanism that aids quorum dependent cellular interactions.
description: 13 pages, 7 figures
The interplay between teachers’ and students’ imagined identities and English teaching and learning at Chinese universities
Creators: name: FAN, HONGMING
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 470401
subject: Applied linguistics and educational linguistics
classificationCode: 390107
subject: Humanities and social sciences curriculum and pedagogy (excl. economics, business and management)
classificationCode: 390102
subject: Curriculum and pedagogy theory and development
classificationCode: 390108
subject: LOTE, ESL and TESOL curriculum and pedagogy

description: People's expectations for the future are important in guiding and improving education, but this is not investigated deeply in language education. This thesis develops a theoretical framework for understanding the interplay between such expectations and English teaching and learning.
The Antesonic Condition for the Explosion of Core-Collapse Supernovae II: Rotation and Turbulence
Creators: name: Raives, Matthias J.
name: Thompson, Todd A.
name: Couch, Sean M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the problem of steady free-fall onto a standing shockwave around acentral mass, the "antesonic" condition limits the regime of stable accretion to $c_T^2/v_\mathrm{esc}^2\leq3/16$, where $c_T$ is the isothermal sound speed in the subsonic post-shock flow, and $v_\mathrm{esc}$ is the escape velocity at the shock radius. Above this limit, it is impossible to satisfy both the Euler equation and theshock jump conditions, and the system transitions to a wind. This physics explains the existence of a critical neutrino luminosity in steady-state models ofaccretion in the context of core-collapse supernovae. Here, we extend the antesonic condition to flows with rotation and turbulence using a simple one-dimensional formalism. Both effects decrease the critical post-shock sound speed required for explosion. While quite rapid rotation is required for a significant change to the critical condition, we show that the level of turbulence typically achieved in supernova simulations can greatly impact the critical value of $c_T^2/v_\mathrm{esc}^2$. A core angular velocity corresponding to a millisecond rotation period after contraction of the proto-neutron star results in only a $\sim\!5$ per-cent reduction of the critical curve. In contrast, near-sonic turbulence with specific turbulent kinetic energy $K/c_T^2=0.5-1$, leads to a decrease in the critical value of $c_T^2/v_{\rm esc}^2$ by $\sim\!20-40$ per-cent. This analysis provides a framework for understanding the role of post-shock turbulence in instigating explosions in models that would otherwise fail and helps explain why multi-dimensional simulations explode more easily than their one-dimensional counterparts.
description: Submitted to MNRAS. 13 pages, 5 figures
Η στάση της Σοβιετικής Ενωσης και των κομμουνιστικών κυβερνήσεων απέναντι στα γεγονότα του 1989
Creators: name: Μαρκοπούλου, Αναστασία Ευγένιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Περεστροϊκα
Γκλασνοστ
Γκορμπατσοφ
Perestroika
Glasnost
Gorbachev

description: Η παρούσα εργασία σκοπό έχει να παρουσιάσει τα γεγονότα που οδήγησαν στην αλλαγή του πολιτικού σκηνικού στις χώρες του ανατολικού μλπόκ. Γεγονότα μεγάλης σημασίας που με τη σειρά τους οδήγησαν στην πτώση της Σοβιετικής Ένωσης. Το πρώτο μέρος αναφέρεται στην άνοδο του Μιχαήλ Γκορμπατσόφ στην ηγεσία της Σοβιετική Ένωσης το 1985 και κυρίως στην πολιτική που ακολούθησε, αναλύοντας τα δύο σημαντικά σκέλη αυτής, την Περεστρόικα και την Γκλάσνοστ. Στο δεύτερο μέρος παρουσιάζεται αναλυτικά η αντίδραση της κάθε χώρας και των εκάστοτε κομμουνιστικών κυβερνήσεων ενώπιον των απαιτήσεων των λαών τους για δημοκρατικές μεταρρυθμίσεις, γίνεται αναφορά στην Πολωνία, στην Ουγγαρία, στην Ανατολική Γερμανία, στην Τσεχοσλοβακία, στη Βουλγαρία και στη Ρουμανία. Στη συνέχεια του ίδιου κεφαλαίου περιγράφεται και η στάση που τήρησε η Μόσχα στην διάρκεια αυτών των γεγονότων. Τέλος στο τρίτο και τελευταίο κεφάλαιο περιγράφεται η σχέση της Μόσχας με τις χώρες της Δύσης και η αντίδρασή τους σε αυτά τα γεγονότα.
description: The current essay’s purpose is to present the facts that triggered the changes of the political scene in Eastern Europe.These were facts of great importance and are often argued to be the cause of the dissolution of the Soviet Union. The first part refers to Mikhail Gorbachev’s rising in the leadership of the Soviet Union in 1985 and the policy he initiated, analyzing its two main parts Perestroika and Glasnost. The second part of the essay presents the reaction of the communist goverments of Eastern europe at the time comfronting the demands of their people for democratical reforms.There are references about Poland,Hungary, Eastern Germany, Chechoslovakia,Bulgaria and Romania.Continuing in the same chapter lies a analysis of Moscow’s stance during these events. Finally the third and last chapter presents the relationship between Moscow and the Western world and also the reactions of the West during these historical events.
String theoretic QCD axion with stabilized saxion and the pattern of supersymmetry breaking
Creators: name: Choi, Kiwoon
name: Jeong, Kwang Sik
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: String theoretic axion is a prime candidate for the QCD axion solving the strong CP problem. For a successful realization of the QCD axion in string theory, one needs to stabilize moduli including the scalar partner (saxion) of the QCD axion, while keeping the QCD axion unfixed until the low energy QCD instanton effects are turned on. We note that a simple generalization of KKLT moduli stabilization provides such set-up realizing the axion solution to the strong CP problem. Although some details of moduli stabilization are different from the original KKLT scenario, this set-up leads to the mirage mediation pattern of soft SUSY breaking terms as in the KKLT case, preserving flavor and CP as a consequence of approximate scaling and axionic shift symmetries. The set-up also gives an interesting pattern of moduli masses which might avoid the cosmological moduli, gravitino and axion problems.
description: JHEP style, 21 pages, 3 figures; typos corrected
A new superwind galaxy: XMM-Newton observations of NGC 6810
Creators: name: Strickland, David K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first imaging X-ray observation of the highly inclined (i = 78 deg) Sab Seyfert 2 galaxy NGC 6810 using XMM-Newton, which reveals soft X-ray emission that extends out to a projected height of ~7 kpc away from the plane of the galaxy. The soft X-ray emission beyond the optical disk of the galaxy is most plausibly extra-planar, although it could instead come from large galactic radius. This extended X-ray emission is spatially associated with diffuse H-alpha emission, in particular with a prominent 5-kpc-long H-alpha filament on the north-west of the disk. A fraction 2 kpc. Within the optical disk of the galaxy the soft X-ray emission is associated with the star-forming regions visible in ground-based H-alpha and XMM-Newton Optical Monitor near-UV imaging. The temperature, super-Solar alpha-element-to-iron abundance ratio, soft X-ray/H-alpha correlation, and X-ray to far-IR flux ratio of NGC 6810 are all consistent with local starbursts with winds, although the large base radius of the outflow would make NGC 6810 one of the few ``disk-wide'' superwinds currently known. Hard X-ray emission from NGC 6810 is weak, and the total E=2-10 keV luminosity and spectral shape are consistent with the expected level of X-ray binary emission from the old and young stellar populations. The X-ray observations provide no evidence of any AGN activity. We find that the optical, IR and radio properties of NGC 6810 are all consistent with a starburst galaxy, and that the old classification of this galaxy as a Seyfert 2 galaxy is probably incorrect.
description: Accepted for publication in MNRAS. 12 pages including jpeg-encapsulated ps files, full resolution version available at http://proteus.pha.jhu.edu/~dks/dks_published.html
Super-Earths, M Dwarfs, and Photosynthetic Organisms: Habitability in the Lab
Creators: name: Claudi, R.
name: Alei, E.
name: Battistuzzi, M.
name: Cocola, L.
name: Erculiani, M. S.
name: Pozzer, A. C.
name: Salasnich, B.
name: Simionato, D.
name: Squicciarini, V.
name: Poletto, L.
name: La Rocca, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In a few years, space telescopes will investigate our Galaxy to detect evidence of life, mainly by observing rocky planets. In the last decade, the observation of exoplanet atmospheres and the theoretical works on biosignature gasses have experienced a considerable acceleration. The~most attractive feature of the realm of exoplanets is that 40\% of M dwarfs host super-Earths with a minimum mass between 1 and 30 Earth masses, orbital periods shorter than 50 days, and radii between those of the Earth and Neptune (1--3.8 R$_\oplus$). Moreover, the recent finding of cyanobacteria able to use far-red (FR) light for oxygenic photosynthesis due to the synthesis of chlorophylls $d$ and $f$, extending in vivo light absorption up to 750\ nm, suggests the possibility of exotic photosynthesis in planets around M dwarfs. Using innovative laboratory instrumentation, we exposed different cyanobacteria to an M dwarf star simulated irradiation, comparing their responses to those under solar and FR simulated lights.~As expected, in FR light, only the cyanobacteria able to synthesize chlorophyll $d$ and $f$ could grow. Surprisingly, all strains, both able or unable to use FR light, grew and photosynthesized under the M dwarf generated spectrum in a similar way to the solar light and much more efficiently than under the FR one. Our findings highlight the importance of simulating both the visible and FR light components of an M dwarf spectrum to correctly evaluate the photosynthetic performances of oxygenic organisms exposed under such an exotic light~condition.
description: 19 pages, 5 Figures. Published on Life,2021, 11, 10
title: Προσομοίωση, μοντελοποίηση και μελέτη αυτοματοποιημένης διαδικασίας διαχείρισης υλικών μέσα σε γραμμή παραγωγής με χρήση ρομποτικών βραχιόνων
title: Simulation, modeling and study of an automated 'picking' process within a production line using robotic arms
Creators: name: Καλογριδης Μαριος
Publisher: name: Technical University of Crete
Year: 2024

description: Στη παρούσα διπλωματική εργασία θα αναλυθεί μία γραμμή παραγωγής, όπου γίνεται διαχείρηση υλικών, με χρήση ρομποτικών βραχιόνων. Αρχικά θα μοντελοποιηθούν τρία διαφορετικά χωροταξικά μοντέλα, που εκτελούν αυτοποιημένη διαχείρησης υλικών με χρήση εξειδικευμένου λογισμικού. Στα μοντέλα υπάρχουν ρομποτικοί βραχίονες, χωροθετημένοι με συγκεκριμένο τρόπο όπου δέχονται αντικείμενα από ζώνες μεταφοράς, τα διαχειρίζονται τοποθετόντας τα σε προκαθορισμένες θέσεις ανάλογα με το είδος τους. Στο ίδιο λογισμικό γίνεται ρεαλιστική προσομοίωση αληθινών συνθηκών των μοντέλων και μετρώνται οι χρόνοι παραγωγής για την δημιουργία ενός τελικού τεμαχίου σε έξι διαφορετικά σενάρια. Τέλος γίνεται ανάλυση των χρόνων κάθε μοντέλου με σκόπο την εύρεση των οριακών τιμών και σύγκριση των σεναρίων.
description:  In this diploma thesis, a production line that utilizes  robotic manipulators will be analyzed. Initially, three different models will be simulated, performing an automated 'picking' process in robotic simulation software. The models feature robotic arms in specific arrangements, receiving objects from conveyor belts. The robots 'pick up' these objects and place them in predetermined positions based on their type. Simulation of actual conditions and measurement of production times for creating a final piece are conducted in the same software under six different scenarios.  Finally, an analysis of the times for each model is performed to find the threshold/limit values and compare the scenarios.
Predicate Abstraction with Under-approximation Refinement
Creators: name: Pasareanu, Corina S.
name: Pelanek, Radek
name: Visser, Willem
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences
subject: D.2.4; F.3.1

description: We propose an abstraction-based model checking method which relies on refinement of an under-approximation of the feasible behaviors of the system under analysis. The method preserves errors to safety properties, since all analyzed behaviors are feasible by definition. The method does not require an abstract transition relation to be generated, but instead executes the concrete transitions while storing abstract versions of the concrete states, as specified by a set of abstraction predicates. For each explored transition the method checks, with the help of a theorem prover, whether there is any loss of precision introduced by abstraction. The results of these checks are used to decide termination or to refine the abstraction by generating new abstraction predicates. If the (possibly infinite) concrete system under analysis has a finite bisimulation quotient, then the method is guaranteed to eventually explore an equivalent finite bisimilar structure. We illustrate the application of the approach for checking concurrent programs.
description: 22 pages, 3 figures, accepted for publication in Logical Methods in Computer Science journal (special issue CAV 2005)
A semiclassical tetrahedron
Creators: name: Rovelli, Carlo
name: Speziale, Simone
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a macroscopic semiclassical state state for a quantum tetrahedron. The expectation values of the geometrical operators representing the volume, areas and dihedral angles are peaked around assigned classical values, with vanishing relative uncertainties.
description: 10 pages; v2 revised version
Imaging polar and dipolar sources of geophysical anomalies by probability tomography. Part II: Application to the Vesuvius volcanic area
Creators: name: Mauriello, Paolo
name: Patella, Domenico
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In the previous part I, we have developed the generalized theory of the probability tomography method to image polar and dipolar sources of a vector or scalar geophysical anomaly field. The purpose of the new method was to improve the core-and-boundary resolution of the most probable buried sources of the anomalies detected in a datum domain. In this paper, which constitutes the part II of the same study, an application of the new approach to the Vesuvius volcano (Naples, Italy) is illustrated in detail by analyzing geoelectrical, self-potential and gravity datasets collected over the whole volcanic area. The purpose is to get new insights into the shallow structure and hydrothermal system of Vesuvius, and the deep geometry of the tectonic depression within which the volcano grew.
description: 7 pages, 10 figures
Μηδενικά πολυωνυμικών πινάκων
Creators: name: Τιφτίκογλου, Ιωάννης Χαράλαμπου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: πολυωνυμικός πίνακας
μηδενικά
ανάλυση ιδιαζόντων τιμών
polynopmial matrix
zeros
singular value decomposition

description: Η μελέτη πινάκων πολυωνύμων είναι ιδιαίτερης σημασίας μιας και εμφανίζονται κατά τη μελέτη συστημάτων συνήθων διαφορικών εξισώσεων σταθερών συντελεστών. Στην εργασία αυτή μελετάμε το πρόβλημα του υπολογισμού των μηδενικών πινάκων πολυωνύμων. Πιο συγκεκριμένα, μελετάμε τις συνθήκες υπό τις οποίες το δυϊκό και το ευθύ πολυώνυμο έχουν κοινές ρίζες και παρουσιάζουμε και υλοποιούμε έναν αλγόριθμο για τον υπολογισμό των μηδενικών του οποίου βασικό συστατικό είναι η ανάλυση ιδιαζόντων τιμών.
description: The study of matrix polynomials is of special importance since matrix polynomials arise when studying systems of ordinary differential equations with constant coefficients. In this thesis we investigate the problem of determining the zeros of matrix polynomials. More precisely, we study the conditions under which the zeros of a polynomial coincide with those of its dual polynomial and we present and implement a singular value decomposition based algorithm for the numerical calculation of the zeros of a matrix polynomial.
Nevanlinna Analytical Continuation
Creators: name: Fei, Jiani
name: Yeh, Chia-Nan
name: Gull, Emanuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Simulations of finite temperature quantum systems provide imaginary frequency Green's functions that correspond one-to-one to experimentally measurable real-frequency spectral functions. However, due to the bad conditioning of the continuation transform from imaginary to real frequencies, established methods tend to either wash out spectral features at high frequencies or produce spectral functions with unphysical negative parts. Here, we show that explicitly respecting the analytic `Nevanlinna' structure of the Green's function leads to intrinsically positive and normalized spectral functions, and we present a continued fraction expansion that yields all possible functions consistent with the analytic structure. Application to synthetic trial data shows that sharp, smooth, and multi-peak data is resolved accurately. Application to the band structure of silicon demonstrates that high energy features are resolved precisely. Continuations in a realistic correlated setup reveal additional features that were previously unresolved. By substantially increasing the resolution of real frequency calculations our work overcomes one of the main limitations of finite-temperature quantum simulations.
Superpositions of Probability Distributions
Creators: name: Jizba, Petr
name: Kleinert, Hagen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Probability distributions which can be obtained from superpositions of Gaussian distributions of different variances v = σ^2 play a favored role in quantum theory and financial markets. Such superpositions need not necessarily obey the Chapman-Kolmogorov semigroup relation for Markovian processes because they may introduce memory effects. We derive the general form of the smearing distributions in v which do not destroy the semigroup property. The smearing technique has two immediate applications. It permits simplifying the system of Kramers-Moyal equations for smeared and unsmeared conditional probabilities, and can be conveniently implemented in the path integral calculus. In many cases, the superposition of path integrals can be evaluated much easier than the initial path integral. Three simple examples are presented, and it is shown how the technique is extended to quantum mechanics.
description: 23 pages, RevTeX, minor changes, accepted to Phys. Rev. E
Φυσιογνωμία και εξέλιξη της ελληνικής κινηματογραφικής πολιτικής
Creators: name: Κοντού, Μαρίνα-Αιμιλία Αρσενίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Κινηματογραφική πολιτική
Πολιτιστική πολιτική
Ιστορία του κινηματογράφου
Film policy
Cultural policy
Film history

description: Η ελληνική κινηματογραφική πολιτική παραμένει εν πολλοίς τοπίο ανεξερεύνητο. Η σημασία της, ωστόσο, για την ουσιαστικότερη κατανόηση της λειτουργίας του κινηματογράφου ως ολικού πολιτισμικού φαινομένου στη σύγχρονη ελληνική κοινωνία καθιστά τη μελέτη της απαραίτητη προκειμένου να αναδειχθούν όλοι εκείνοι οι ενδογενείς και εξωγενείς παράγοντες που συνδιαμορφώνουν την εξέλιξη της ελληνικής κινηματογραφίας και κινηματογραφικής κουλτούρας. Η παρούσα μελέτη επιχειρεί μια πρώτη χαρτογράφηση του πεδίου χάραξης και εφαρμογής κινηματογραφικής πολιτικής, διατρέχοντας χρονολογικά την ιστορία του ελληνικού κινηματογράφου με βάση την ανάλυση της ελληνικής κινηματογραφικής νομοθεσίας. Ενθέτοντας την ανάλυση αυτή στο ευρύτερο κοινωνικό, οικονομικό, πολιτικό και πολιτισμικό της πλαίσιο, επιτρέπει την ανάδυση ενός μωσαϊκού πολιτικών, στάσεων, στόχων, εργαλείων, δρώντων αλλά και αναγκών που αμφισβητεί την παραδοσιακή μονοδιάστατη αντίληψη για μια κρατοκεντρική κινηματογραφική πολιτική που αμφιταλαντεύεται ανάμεσα στην τέχνη και τη βιομηχανία.
description: Greek film policy remains a largely unexplored territory. Its significance, however, for a more substantial understanding of the workings of cinema as a total cultural phenomenon in modern Greek society necessitates its analysis. This will allow all those endogenous and exogenous factors that determine the evolution of Greek cinema and Greek film culture to come to the fore. This paper attempts to provide a mapping of the field within which film policy is shaped and exercised through tracing the chronological development of Greek cinema based on the analysis of Greek cinema legislation. Embedding this analysis in its wider social, economic, political and cultural context, it reveals a complex spectrum of policies, attitudes, goals, instruments, actors and needs, which challenges the traditional one-dimensional understanding of film policy as a state-centered structure that oscillates between art and industry.