cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Η Ουκρανία μεταξύ Δύσης-Ρωσίας: H περίπτωση της Κριμαίας
Creators: name: Ερνεάνου Στεφάνα-Ραφαέλα
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κριμαία
Ουκρανία
Προσάρτηση
Crimea
Ukraine
Αnnexation

description: Η παρούσα εργασία έχει ως σκοπό την ανάλυση της κρίσης που ξέσπασε στην Ουκρανία το 2014, με αφορμή την ακύρωση υπογραφής συμφωνίας σύνδεσης με την Ευρωπαϊκή Ένωση από τον τότε πρόεδρο, Victor Yanukovych. Στην εργασία παρουσιάζεται το μεταψυχροπολεμικό διεθνές σύστημα και το πως αυτό συνετέλεσε στην ανάδυση αυτής της κρίσης. Αναλύονται οι διεθνείς και οι εσωτερικοί παράγοντες που επηρέασαν τα γεγονότα και που εν τέλει οδήγησαν στην ανατροπή του τότε προέδρου. Παρουσιάζονται τα κρίσιμα γεγονότα που συνετέλεσαν στην προσάρτηση της Κριμαίας από την Ρωσία, αναδεικνύοντας παράλληλα την γεωπολιτική σημασία της περιοχής τόσο σε περιφερειακό όσο και σε διεθνές επίπεδο. Ακόμα, αναλύονται οι νέοι συσχετισμοί δυνάμεων που προέκυψαν στην περιοχή της Μαύρης Θάλασσας μετά την προσάρτηση της κριμαϊκής χερσονήσου από την Ρωσία και οι γενικότερες συνέπειες στις σχέσεις ΝΑΤΟ-Ρωσίας. Επίσης, εξετάζονται οι ευρύτερες συνέπειες σε ενεργειακό επίπεδο μεταξύ Ρωσίας-Ε.Ε. Ακόμα, επιχειρείται μια συνολική αποτίμηση της στρατηγικής επιβολής κυρώσεων από την Δύση και τέλος εξετάζεται η ενίσχυση του άξονα συνεργασίας μεταξύ Κίνας-Ρωσίας, ως αποτέλεσμα της κλιμάκωσης των σχέσεων Δύσης-Ρωσίας.
description: The present study aims at analyzing the crisis that broke out in Ukraine in 2014, caused by the cancellation of the signing process of the Partnership Agreement with the European Union, undertaken by that time’s President, Victor Yanukovych. The study presents the post-cold-war international system and the manner it contributed to the emersion of the current crisis. International and internal factors which have influenced the facts and have finally conducted to the overturn of that time’s president are being analyzed. Crucial circumstances, which have contributed to the annexation of Crimea by Russia, underlining parallelly the geopolitical importance of the region on local level, as well as on the international one, are being presented. Moreover the new balance of power in the Black Sea region after the annexation of the Crimean peninsula by Russia and the larger consequences on the relationships NATO – Russia are analyzed. Finally, a general valuation of the strategy of sanctions conducted by the West is being attempted and of the strengthening of the cooperation axis between China and Russia, as a result of the escalation of the relationships between the West and Russia.
Can a liquid drop on a substrate be in equilibrium with saturated vapor?
Creators: name: Benilov, E. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: It is well-known that liquid and saturated vapor, separated by a flat interface in an unbounded space, are in equilibrium. One would similarly expect a liquid drop, sitting on a flat substrate, to be in equilibrium with the vapor surrounding it. Yet, it is not: as shown in this work, the drop evaporates. Mathematically, this conclusion is deduced using the diffuse-interface model, but it can also be reformulated in terms of the maximum-entropy principle, suggesting model independence. Physically, evaporation of drops is due to the so-called Kelvin effect, which gives rise to a liquid-to-vapor mass flux in all cases where the boundary of the liquid phase is convex.
Estimate on dust scale height from ALMA dust continuum image of the HD 163296 protoplanetary disk
Creators: name: Doi, Kiyoaki
name: Kataoka, Akimasa
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: We aim at estimating the dust scale height of protoplanetary disks from millimeter continuum observations. First, we present a general expression of intensity of a ring in a protoplanetary disk, and show that we can constrain the dust scale height by the azimuthal intensity variation. Then, we apply the presented methodology to the two distinct rings at 68 au and at 100 au of the protoplanetary disk around HD 163296. We constrain the dust scale height by comparing the DSHARP high-resolution millimeter dust continuum image with radiative transfer simulations using RADMC-3D. We find that h_d/h_g > 0.84 at the inner ring and h_d/h_g < 0.11 at the outer ring with the 3 sigma uncertainties, where h_d is the dust scale height and h_g is the gas scale height. This indicates that the dust is flared at the inner ring and settled at the outer ring. We further constrain the ratio of turbulence parameter alpha to gas-to-dust-coupling parameter St from the derived dust scale height; alpha/St > 2.4 at the inner ring, and alpha/St < 1.1*10^{-2} at the outer ring. This result shows that the turbulence is stronger or the dust is smaller at the inner ring than at the outer ring.
description: 19 pages, 16 figures, accepted to ApJ, error estimation revised
ПРОБЛЕМЫ ПРИМЕНЕНИЯ УГОЛОВНОГО ЗАКОНОДАТЕЛЬСТВА О УСЛОВНО-ДОСРОЧНОМ ОСВОБОЖДЕНИИ В УСЛОВИЯХ МНОЖЕСТВЕННОСТИ ПРЕСТУПЛЕНИЙ
Creators: name: СЕМЕНОВА ДИАНА МИХАЙЛОВНА
Publisher: name: Юридическая наука
Year: 2021
Subjects: МНОЖЕСТВЕННОСТЬ ПРЕСТУПЛЕНИЙ
УГОЛОВНАЯ ОТВЕТСТВЕННОСТЬ
ДИФФЕРЕНЦИАЦИЯ УГОЛОВНОЙ ОТВЕТСТВЕННОСТИ
УСЛОВНО-ДОСРОЧНОЕ ОСВОБОЖДЕНИЕ
СУДИМОСТЬ
ОБЩЕСТВЕННАЯ ОПАСНОСТЬ ПРЕСТУПЛЕНИЯ
MULTIPLE OFFENCES
CRIMINAL RESPONSIBILITY
DIFFERENTIATION OF CRIMINAL RESPONSIBILITY
GRANT PAROLE
CONVICTION
SOCIAL DANGER OF CRIME

description: В статье рассматриваются проблемы применения норм Уголовного кодекса Российской Федерации об условно-досрочном освобождении в условиях множественности преступлений. Обращается внимание, что пределы дифференциации уголовной ответственности важно установить не только для наказания, но и для освобождения от уголовной ответственности и наказания, в частности для условно-досрочного освобождения от наказания, поскольку в соответствующих нормах тоже отражена идея дифференциации уголовной ответственности с учетом категории преступления, а значит его характера и типовой степени общественной опасности, а также типовой характеристики личности виновного. Отмечается, что множественность преступлений не может приравниваться к единичному преступлению, и лицо не может признаваться впервые совершившим совокупность преступлений, в том числе для целей условнодосрочного освобождения от освобождения от уголовной ответственности. Лица, чьи деяния образуют наиболее опасные формы и виды множественности преступлений, обладают повышенной степенью общественной опасности. Отношение к условно-досрочному освобождению таких лиц должно быть более жестким, поскольку это особые категории осужденных. Целесообразна дифференциация правил условно-досрочного освобождения лиц, осужденных за впервые совершенное деяние, содержащее признаки преступления или нескольких преступлений, и лиц, чьи деяния образуют наиболее опасные формы и виды множественности преступлений. В заключении предлагаются конкретные правила условно-досрочного освобождения в условиях множественности преступлений.
Thinking outside the box: how to use the existing science on ultrafine particles to protect against them?
Creators: name: Morawska, Lidia
Publisher: name: Karlsruhe
Year: 2019

description: Over the past two decades numerous research projects have investigated an array of characteristics of ultrafine particles (UFP), or more generally, particles of the lower submicrometre size range. There is a reasonably good scientific understanding of the particle concentration levels, modality of size distributions associated with various sources, and their spatial heterogeneity in the urban environments. However, despite the progress made, there has only been very limited progress in understanding the risk to human health posed by UFP, and therefore whether the particles should be controlled. Part of the reason relates to the challenges in conducting epidemiological studies on the impact of UFP, and lack of consistency between the outcomes of some of the studies. In 2018 a group of exposure experts, toxicologist and epidemiologist joint forces to think outside the box, and to use the wealth of scientific knowledge on UFP physico-chemistry, toxicology and epidemiology to develop an approach that will create the basis for protection against the particles. The group has been working on developing a White Paper to inform decision makers on the state of knowledge on UFP and on conducting meta-analysis of data from epidemiologic studies to identify any evidence that can already be used to recommend exposure limits for UFP. The outcome of this work will contribute to the current debates on UFP, and to the work conducted on this topic by national and international bodies, including the World Health Organization or the European Union. The presentation will summarize the progress of this work and the picture that begins to emerge.
Scaling diagram for the localization length at a band edge
Creators: name: Sadel, Christian
name: Schulz-Baldes, Hermann
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A weak-coupling scaling diagram for the Lyapunov exponent and the integrated density of states near a band edge of a random Jacobi matrix is obtained. The analysis is based on the use of a Fokker-Planck operator describing the drift-diffusion of the Prüfer phases.
Η συμβολή της Δασοκομίας στην αντιμετώπιση ζητημάτων Κτηματολογίου
Creators: name: Γιαννάκης, Βασίλειος Ιωάννης
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κτηματολόγιο
Δασοκομία
Κτηματογράφιση
Cadastre
Silviculture
Registry

description: Η Δασοκομία είναι ο κλάδος της Δασολογικής επιστήμης ο οποίος ασχολείται με τη διαμόρφωση μιας κατάλληλης και σκόπιμης δομής των δασοσυστάδων σε τρόπο ώστε να ανταποκρίνονται αυτές πάντοτε με πληρότητα και κατά τον πιο ορθολογικό τρόπο στις ανάγκες της κοινωνίας. Το Εθνικό Κτηματολόγιο είναι μια γενική, ενιαία, συστηματική και πάντοτε ενημερωμένη καταγραφή, που περιλαμβάνει τη γεωμετρική περιγραφή και το ιδιοκτησιακό καθεστώς κάθε τμήματος γης, με την ευθύνη και την εγγύηση του Δημοσίου. Σκοπός της παρούσας εργασίας είναι να επισημάνει, να συγκεντρώσει και να επεξηγήσει όλους τους όρους της Δασοκομίας που συμμετέχουν στη σύνταξη του Εθνικού Κτηματολογίου και συγκεκριμένα στην Κτηματογράφηση και στην κατάρτιση των Δασικών Χαρτών, όπως επίσης να παραθέσει συγκεκριμένα προβλήματα που έχουν προκύψει κατά την πράξη και έχουν επιλυθεί από τη Δασοκομία. Οι κυριότεροι τομείς του Εθνικού Κτηματολογίου που επηρεάζονται από τη Δασοκομία είναι ο ορισμός του δάσους, οι αποφάσεις της Δασικής Υπηρεσίας όπως είναι οι πράξεις χαρακτηρισμού και η κήρυξη εκτάσεων ως αναδασωτέες και τέλος, η σύνταξη του Δασολογίου. Κατατίθενται επίσης κάποιες προτάσεις για την ενσωμάτωση του Δασολογίου στο τρέχον νομοθετικό πλαίσιο και την οριστικοποίηση του πλαισίου αυτού προκειμένου να επισπευθεί η ολοκλήρωση του Εθνικού Κτηματολογίου.
description: Silviculture is the field of Forestry which deals with the formation of an appropriate and deliberate structure of forest stands in such a way that they always respond in full and in the most rational way to the needs of society. The National Land Register is a general, uniform, systematic and always up-to-date record, including the geometric description and ownership status of each part of the land, under the responsibility and guarantee of the State. The purpose of this dissertation is to highlight, gather and explain all the terms of Silviculture involved in the compilation of the National Land Register, in particular in preliminary work and Forest Map setup, as well as to cite specific problems that have arisen in practice and have been solved by Silviculture. The main areas of the National Land Register affected by Silviculture are the definition of the forest, several decisions of the Forest Service such as characterization acts and the declaration of reforestation and, finally, the creation of a Forestal Cadastre. Some proposals are also tabled for incorporating the Forestal Cadastre into the current legislative framework and finalizing this framework in order to speed up the completion of the National Cadastre.
Singularities in Isotropic Non-Minimal Scalar Field Models
Creators: name: Bojowald, M.
name: Kagan, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Non-minimally coupling a scalar field to gravity introduces an additional curvature term into the action which can change the general behavior in strong curvature regimes, in particular close to classical singularities. While one can conformally transform any non-minimal model to a minimally coupled one, that transformation can itself become singular. It is thus not guaranteed that all qualitative properties are shared by minimal and non-minimal models. This paper addresses the classical singularity issue in isotropic models and extends singularity removal in quantum gravity to non-minimal models.
description: 12 pages
Εικονικό Μουσείο: Ορισμός και προοπτικές
Creators: name: Σαρατζίδου, Σοφία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Εικονικό Μουσείο
Εικονική πραγματικότητα
Εικονικό περιβάλλον
Ψηφιακή πολιτιστική κληρονιμία
Τεχνιτή νοημοσύνη
Virtual Museum
Virtual reality
Virtual Environment
Digital Heritage
Artificial Intelligence

description: Η παρούσα εργασία διερευνά τον ορισμό του εικονικού μουσείου και εξετάζει την τρέχουσα κατάσταση και τις προοπτικές του εικονικού μουσείου στο διαδίκτυο. Δεδομένου ότι η σημερινή έρευνα σχετικά με τα εικονικά μουσεία είναι πολύ περιορισμένη και αφορά κυρίως τις ψηφιακές συλλογές ή τα μουσεία και το διαδίκτυο γενικότερα, είναι σημαντικό να δοθεί έμφαση αποκλειστικά στο τι σημαίνει εικονικό μουσείο. Για να γίνει αυτό, πρέπει να καθοριστούν τα βασικά χαρακτηριστικά της ιδέας του εικονικού μουσείου. Ως εκ τούτου, τα βασικά ερωτήματα αυτής της μελέτης είναι: Τι καθορίζει ένα εικονικό μουσείο; Ποιες είναι οι προοπτικές του εικονικού μουσείου; Ποιες είναι οι δυνατότητες ενός εικονικού μουσείου ώστε να θεωρηθεί ως αυτόνομο μουσείο; Η βιβλιογραφία περιλαμβάνει μια επιλογή θεωρητικής και πρακτικής βιβλιογραφίας για τα εικονικά μουσεία μεταξύ του 1991 και του 2016. Αυτή η διπλωματική εργασία θα μελετήσει τις προοπτικές του εικονικού μουσείου και αν είναι δυνατό για το εικονικό μουσείο να γίνει μουσείο στο οποίο θα μπορούν να εφαρμοστούν οι αρχές του φυσικού μουσείου.
description: This thesis explores the definition of the virtual museum and examines the current situation and prospects of the virtual museum on the Internet. Given that today's research on virtual museums is very limited and mainly concerns digital collections or museums and the internet in general, it is important to emphasize exclusively what a virtual museum means. To do this, the basic features of the virtual museum's idea must be defined. Therefore, the main questions of this study are: What defines a virtual museum? What are the perspectives of the virtual museum? What are the possibilities of a virtual museum to be considered as an autonomous museum? The bibliography includes a selection of theoretical and practical literature on virtual museums between 1991 and 2016. By comparing the collect, preserve and display principles of the museum with current applications used in the virtual museum, we found it possible to apply these principles even to the virtual museum. This thesis will study the perspectives of the virtual museum and if it is possible for the virtual museum to become a museum in which the principles of the natural museum can be applied.
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Universal T-matrix, Representations of OSp_q(1/2) and Little Q-Jacobi Polynomials
Creators: name: Aizawa, N.
name: Chakrabarti, R.
name: Mohammed, S. S. Naina
name: Segar, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 20G42; 81R50

description: We obtain a closed form expression of the universal T-matrix encapsulating the duality of the quantum superalgebra U_q[osp(1/2)] and the corresponding supergroup OSp_q(1/2). The classical q-->1 limit of this universal T-matrix yields the group element of the undeformed OSp(1/2) supergroup. The finite dimensional representations of the quantum supergroup OSp_q(1/2) are readily constructed employing the said universal T-matrix and the known finite dimensional representations of the dually related deformed U_q[osp(1/2)] superalgebra. Proceeding further, we derive the product law, the recurrence relations and the orthogonality of the representations of the quantum supergroup OSp_q(1/2). It is shown that the entries of these representation matrices are expressed in terms of the little Q-Jacobi polynomials with Q = -q. Two mutually complementary singular maps of the universal T-matrix on the universal R-matrix are also presented.
description: 21pages, no figure; final form for publication
Predicting the contents of polysaccharides and its monosugars in Dendrobium huoshanense by partial least squares regression model using attenuated total reflectance Fourier transform infrared spectroscopy
Creators: name: Hao, Jing-Wen
name: Chen, Nai-Dong
name: Fu, Xu-Cheng
name: Zhang, Jian
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Plant Biology

description: An attenuated total reflectance Fourier transform infrared spectroscopy method combined with partial least square regression was established to rapidly quantify the total polysaccharide and its major monosugars in Dendrobium huoshanense. The results showed that the optimal predictive methods were the models established by the infrared spectroscopy files pretreated by standard normal transformation combined with the second derivative; the accuracy of the models selecting wavelength regions based on the assignments of Fourier transform infrared spectroscopy signals of polysaccharide was obviously higher than the models selecting wavelength regions suggested by Thermofisher Quantity Analyst software and other possible wavelength region selecting modes. The external validation and the complete external validation confirmed the robustness and reliability of the developed attenuated total reflectance Fourier transform infrared model. Our study might provide an efficient technique tool for the rapid, green, low-cost, and nondestructive quantification of the total polysaccharide and the main monosaccharides in Dendrobium huoshanense and other rich-in-polysaccharide plant food or medicines.
Supplementary material from Skill and self-knowledge: empirical refutation of the dual-burden account of the Dunning–Kruger effect
Creators: name: McIntosh, Robert D.
name: Moore, Adam B.
name: Liu, Yuxin
name: Della Sala, Sergio
Publisher: name: The Royal Society
Year: 2022

description: Reports pilot study, stimulus generation, additional Results details and robustness checks.
Will spin-relaxation times in molecular magnets permit quantum information processing?
Creators: name: Ardavan, Arzhang
name: Rival, Olivier
name: Morton, John J. L.
name: Blundell, Stephen J.
name: Tyryshkin, Alexei M.
name: Timco, Grigore A.
name: Winnpenny, Richard E. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using X-band pulsed electron spin resonance, we report the intrinsic spin-lattice ($T_1$) and phase coherence ($T_2$) relaxation times in molecular nanomagnets for the first time. In Cr$_7M$ heterometallic wheels, with $M$ = Ni and Mn, phase coherence relaxation is dominated by the coupling of the electron spin to protons within the molecule. In deuterated samples $T_2$ reaches 3 $μ$s at low temperatures, which is several orders of magnitude longer than the duration of spin manipulations, satisfying a prerequisite for the deployment of molecular nanomagnets in quantum information applications.
description: 4 pages, 3 figures, in press at Physical Review Letters
On the Fueling of Massive Black Holes and the Properties of their Host Spheroids
Creators: name: Escala, Andres
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the relation between nuclear massive black holes and their host spheroid gravitational potential. Using simple models, we analyze how gas is expected to be transported in the nuclear regions of galaxies. When we couple it with the expected gas lifetime given by the Kennicutt-Schmidt Law, this naturally leads to the `M_BH - M_virial' and `M_BH - sigma' relations. We also numerically test, using AMR simulations, our simple models for the mass transport with satisfactory results.
description: Reduced version that fit the 4-page limit. In press ApJ Letters
EEG-based Texture Roughness Classification in Active Tactile Exploration with Invariant Representation Learning Networks
Creators: name: Ozdenizci, Ozan
name: Eldeeb, Safaa
name: Demir, Andac
name: Erdogmus, Deniz
name: Akcakaya, Murat
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: During daily activities, humans use their hands to grasp surrounding objects and perceive sensory information which are also employed for perceptual and motor goals. Multiple cortical brain regions are known to be responsible for sensory recognition, perception and motor execution during sensorimotor processing. While various research studies particularly focus on the domain of human sensorimotor control, the relation and processing between motor execution and sensory processing is not yet fully understood. Main goal of our work is to discriminate textured surfaces varying in their roughness levels during active tactile exploration using simultaneously recorded electroencephalogram (EEG) data, while minimizing the variance of distinct motor exploration movement patterns. We perform an experimental study with eight healthy participants who were instructed to use the tip of their dominant hand index finger while rubbing or tapping three different textured surfaces with varying levels of roughness. We use an adversarial invariant representation learning neural network architecture that performs EEG-based classification of different textured surfaces, while simultaneously minimizing the discriminability of motor movement conditions (i.e., rub or tap). Results show that the proposed approach can discriminate between three different textured surfaces with accuracies up to 70%, while suppressing movement related variability from learned representations.
description: Accepted for publication at Biomedical Signal Processing and Control
The order of the quantum chromodynamics transition predicted by the standard model of particle physics
Creators: name: Aoki, Y.
name: Endrodi, G.
name: Fodor, Z.
name: Katz, S. D.
name: Szabo, K. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We determine the nature of the QCD transition using lattice calculations for physical quark masses. Susceptibilities are extrapolated to vanishing lattice spacing for three physical volumes, the smallest and largest of which differ by a factor of five. This ensures that a true transition should result in a dramatic increase of the susceptibilities.No such behaviour is observed: our finite-size scaling analysis shows that the finite-temperature QCD transition in the hot early Universe was not a real phase transition, but an analytic crossover (involving a rapid change, as opposed to a jump, as the temperature varied). As such, it will be difficult to find experimental evidence of this transition from astronomical observations.
description: 7 pages, 4 figures
Demonstration of fundamental mode only propagation in highly multimode fibre for high power EDFAs
Creators: name: Stacey, C. D.
name: Jenkins, R. M.
name: Banerji, J.
name: Davies, A R
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The use of short lengths of large core phosphate glass fibre, doped with high concentrations of Er or Er:Yb represents an attractive route to achieving high power erbium doped fibre amplifiers (EDFAs) and lasers (EDFLs). With the aim of investigating the potential of achieving diffraction limited output from such large core fibres, we present experimental results of fundamental mode propagation through a 20 cm length of passive 300 micrometer core multimode fibre when the input is a well-aligned Gaussian beam. Through careful control of fibre geometry, input beam parameters and alignment, we measured an output M squared of 1.1 + - 0.05. The fibre had a numerical aperture of 0.389, implying a V number of 236.8. To our knowledge, this is the largest core fibre through which diffraction limited fundamental mode propagation has been demonstrated. Although the results presented here relate to undoped fibre, they do provide the practical basis for a new generation of EDFAs and EDFLs.
description: 5 figures
Movement, covert movement, nominal structure
Creators: name: Doko, Jeanne
name: Koutouan, Evelyne
name: Jarvis, Rebecca
name: Kouadio, Timothée
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: ebr

description: Elicitation focusing on islands, overt movement, and wh-in-situ as well as nominal structure and topics.
Large-signal spice models for heterojunction bipolar transistors and lasers
Creators: name: Feng, James Jun Xiong
Publisher: name: University of British Columbia
Year: 2009

description: Large-signal SPICE models for heterojunction bipolar transistors (HBTs) and semiconductor lasers are developed. For a general graded-base double heterojunction bipolar transistor (DHBT), a Full Ebers-Moll model and its simplified versions for specific HBTs have been derived from DAPHNE, a and implemented in the circuit simulator HSPICE by using its piece-wise-linear features to represent the coefficients with voltage-dependent normalized junction velocity terms, which are used to describe tunneling factors and junction barrier heights for back-injected electrons. For uniform and moderately-graded base single heterojunction bipolar transistors (SHBTs), this model can be further simplified and BJT-compatible versions of the HBT SPICE model can also be derived by using an exponential fit to the normalized junction velocity. The experimental data, forward collector current and the variation of the oscillation frequency fosc with bias voltage Vcci f°r a graded-base SHBT and two five-stage ring oscillators, respectively, can be well-fitted by simulation results from DAPHNE and the BJT SPICE model. A popular large-signal equivalent circuit model, developed by Tucker [4, 5], based on the rate equation for a single-mode semiconductor laser, has been modified, simulated and compared with experimental data. Finally, the performance of HBT-laser transmitters is also simulated to show that the models developed in this thesis have the capability of being very useful design tools for HBT-laser optoelectronic integrated circuits. [Footnote] 1 DAPHNE: An acronym for Device Analysis Program for heterojunction Numerical Evaluation, has been developed at UBC based on the work of Ho [1], Ang [2], and Laser [3].
Dark Energy Fluid with Time-Dependent, Inhomogeneous Equation of State
Creators: name: Brevik, I.
name: Gorbunova, O. G.
name: Timoshkin, A. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The four-dimensional Friedman flat universe, filled with an ideal fluid with a linear (oscillating) inhomogeneous equation of state (EoS) depending on time, is studied. The equations of motion are solved. It is shown that in some cases there appears a quasi-periodic universe, which repeats the cycles of phantom-type space acceleration. The appearance of future singularities resulting from various choices for the input parameters is discussed.
description: 9 pages pdf, 4 figures. To appear in European Physical Journal C
Density functional study of alkali metal atoms and monolayers on graphite (0001)
Creators: name: Rytkönen, K.
name: Akola, J.
name: Manninen, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Alkali metal atoms (Li, Na, K, Rb, Cs), dimers and (2$\times$2) monolayers on a graphite (0001) surface have been studied using density functional theory, pseudopotentials, and a periodic substrate. The adatoms bind at the hollow site (graphite hexagon), with Li lying closest to (1.84 Å) and Cs farthest (3.75 Å) from the surface. The adsorption energies range between $0.55-1.21$ eV, and the energy ordering of the alkali adatoms is Li$>$Cs$\ge$Rb$\ge$K$>$Na. The small diffusion barriers (0.02-0.21 eV for the C-C bridge) decrease as the atom size increases, indicating a flat potential energy surface. The formation (cohesion) energies of (2$\times$2) monolayers range between 0.55-0.81 eV, where K has the largest value, and increased coverage weakens the adsorbate-substrate interaction (decoupling) while a two-dimensional metallic film is formed. Analysis of the charge density redistribution upon adsorption shows that the alkali metal adatoms donate a charge of $0.4-0.5 e$ to graphite, and the corresponding values for (2$\times$2) monolayers are $\sim 0.1 e$ per atom. The transferred charge resides mostly in the $π$-bands (atomic $p_z$-orbitals) of the outermost graphene layer.
description: 6 figures
The discovery outburst of the X-ray transient IGR J17497-2821 observed with RXTE and ATCA
Creators: name: Rodriguez, Jerome
name: Bel, Marion Cadolle
name: Tomsick, John A.
name: Corbel, Stephane
name: Brocksopp, Catherine
name: Paizis, Ada
name: Bodaghee, Simon E. Shaw Arash
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results of a series of RXTE and ATCA observations of the recently-discovered X-ray transient IGR J17497-2821. Our 3-200 keV PCA+HEXTE spectral analysis shows very little variations over a period of ~10 days around the maximum of the outburst. IGR J17497-2821 is found in a typical Low Hard State (LHS) of X-ray binaries (XRB), well represented by an absorbed Comptonized spectrum with an iron edge at about 7 keV. The high value of the absorption (~4 e22 cm-2) suggests that the source is located at a large distance, either close to the Galactic center or beyond. The timing analysis shows no particular features, while the shape of the power density spectra is also typical of LHS of XRBs, with ~36% RMS variability. No radio counterpart is found down to a limit of 0.21 mJy at 4.80 GHz and 8.64 GHz. Although the position of IGR J17497-2821 in the radio to X-ray flux diagram is well below the correlation usually observed in the LHS of black holes, the comparison of its X-ray properties with those of other sources leads us to suggest that it is a black hole candidate.
description: 6 pages, 4 figures accepted for publication in the Astrophysical Journal Letters
Project Management Methodologies, The Case Study of hotel chain Egnatia Palace
Creators: name: Αλεξανδρίδης, Δημήτριος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Μεθοδολογίες Διαχείρισης Έργου
Διαχείριση Έργου
Project Management Methodologies
Project Management

description: Projects of any form, in order to be accomplished, they use the productive factors of capital, human labor and terrain. When we are planning, directing and developing one system, there is one ultimate goal that we wish to achieve and that is the proper functioning of the project within a default time and economical frame. The key person for this effort is the project manager. To get the best economical result, it requires the effective management of the project construction from the project manager’s side. Within this master thesis, the most popular researches from the global science world are showed, that have to do with the effectiveness of project management from 1917 until today. Subsequently, a theoretical and analytic basis is given, for the management of a project with the methods PERT & CPM, which appear to be the most popular methods globally. Finally, a realistic example of the usage of those specific methods is written, according to the hotel chain “Egnatia Palace” that have its base in the city of Thessaloniki.
description: Τα έργα οποιασδήποτε μορφής προκειμένου να υλοποιηθούν, χρησιμοποιούν το κεφάλαιο, την ανθρώπινη εργασία και το έδαφος. Η διαδικασία του να προγραμματίσουμε, να ελέγξουμε και να αναπτύξουμε ένα σύστημα, έχει απώτερο σκοπό την ορθή λειτουργικότητα του έργου, μέσα σε ένα προκαθορισμένο χρονικό και οικονομικό πλαίσιο. Το πρόσωπο κλειδί σε αυτό το εγχείρημα είναι ο διαχειριστής του έργου. Η παραγωγή του βέλτιστου οικονομικά αποτελέσματος, απαιτεί αποτελεσματική διοίκηση της κατασκευής του έργου από την πλευρά του. Στην παρούσα εργασία έχουν παρατεθεί οι δημοφιλέστερες μελέτες από τον επιστημονικό κόσμο , σχετικά με την αποτελεσματικότητα της διαχείρισης έργου από το 1917 έως και σήμερα. Στη συνέχεια δίνεται θεωρητική και αναλυτική βάση στον προγραμματισμό ενός έργου με τις μεθόδους PERT & CPM , τις πλέον αναγνωρίσιμες μεθόδους σε παγκόσμια κλίμακα. Τέλος, καταγράφεται ένα ρεαλιστικό παράδειγμα εφαρμογής των συγκεκριμένων μεθόδων, μέσα από τις ξενοδοχειακές μονάδες Egnatia Palace που έχουν έδρα την πόλη της Θεσσαλονίκης.
Positive Lyapunov exponents and localization bounds for strongly mixing potentials
Creators: name: Sadel, Christian
name: Schulz-Baldes, Hermann
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For a one-dimensional discrete Schrödinger operator with a weakly coupled potential given by a strongly mixing dynamical system with power law decay of correlations, we derive for all energies including the band edges and the band center a perturbative formula for the Lyapunov exponent. Under adequate hypothesis, this shows that the Lyapunov exponent is positive on the whole spectrum. This in turn implies that the Hausdorff dimension of the spectral measure is zero and that the associated quantum dynamics grows at most logarithmically in time.
Fine and ultrafine particles from indoor sources – Effects on healthy humans in a controlled exposure study and on lung epithelial cells in vitro
Creators: name: Schins, Roel P.F.
name: Hellack, Bryan
name: Soppa, Vanessa J.
name: Thongkam, Waluree
name: Albrecht, Catrin
name: Kaminski, Heinz
name: Kuhlbusch, Thomas A.J.
name: Hoffmann, Barbara
Publisher: name: Karlsruhe
Year: 2019

description: In recent years increasing concern has been expressed about the potential adverse health effects of particles from indoor sources. The aims of the EPIA project were: (1) to characterize potentially relevant indoor sources of (ultra)fine particles with respect to their emission levels and composition and (2) to investigate their adverse health effects. We investigated the effects of emissions from candle burning (CB), toasting of bread (TB) and sausage frying (FS) in a randomized, cross-over sham-controlled exposure study in healthy adults as well as in vitro in A549 human lung epithelial cells. Participants were exposed for 2 h to each of these sources at two different exposure levels, and examined before, during and after the exposures at defined time-intervals. We found transient associations between exposures and several respiratory and cardiovascular effects as well as inflammatory changes (e.g. lung function, blood pressure, arterial stiffness, interleukin-8 in nasal lavage/blood). Specific effects were found to depend strongly on the emission source and the selected exposure metric (e.g. size-specific particle mass concentration, size-specific particle number concentration, lung deposited surface area concentration). Evaluation of PM2.5 samples in the A549 cells, revealed an increased interleukin-8 release and DNA strand breakage induction for toasting, whereas candle burning only resulted in DNA damage. The results from our project demonstrate that elevated concentrations from certain indoor emission sources may lead to changes in the lung and cardiovascular systems as well as possibly induce inflammation.
Additional file 1 of Stress, anxiety, and depression in infertile couples are not associated with a first IVF or ICSI treatment outcome
Creators: name: Peng, Meijuan
name: Wen, Mingyang
name: Jiang, Tao
name: Jiang, Yangqian
name: Lv, Hong
name: Chen, Ting
name: Ling, Xiufeng
name: Li, Hong
name: Meng, Qingxia
name: Huang, Boxian
name: Tao, Shiyao
name: Huang, Lei
name: Liu, Cong
name: Xu, Xin
name: Lu, Qun
name: Liu, Xiaoyu
name: Xu, Bo
name: Han, Xiumei
name: Zhou, Kun
name: Chen, Jiaping
name: Lin, Yuan
name: Ma, Hongxia
name: Xia, Yankai
name: Shen, Hongbing
name: Hu, Zhibin
name: Chen, Feng
name: Du, Jiangbo
name: Jin, Guangfu
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Mental Health

description: Additional file 1: Supplementary Table 1. Characteristics of the ART procedures among 450 couples undergoing their first recorded fresh IVF or ICSI cycle. Supplementary Table 2. Conditional logistic Regression Analysis of psychological distress level on pregnancy rate of first IVF or ICSI cycle among couples without endometriosis, or chronic endometritis or autoimmune disorders. Supplementary Table 3. Conditional logistic Regression Analysis of psychological distress symptoms on pregnancy rate of first IVF or ICSI cycle among women without endometriosis, or chronic endometritis or autoimmune disorders. Supplementary Figure 1. Flowchart for inclusion and exclusion of the study population.
The topological structure of scaling limits of large planar maps
Creators: name: Gall, Jean-Francois Le
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60C05,60D05,05C12

description: We discuss scaling limits of large bipartite planar maps. If p is a fixed integer strictly greater than 1, we consider a random planar map M(n) which is uniformly distributed over the set of all 2p-angulations with n faces. Then, at least along a suitable subsequence, the metric space M(n) equipped with the graph distance rescaled by the factor n to the power -1/4 converges in distribution as n tends to infinity towards a limiting random compact metric space, in the sense of the Gromov-Hausdorff distance. We prove that the topology of the limiting space is uniquely determined independently of p, and that this space can be obtained as the quotient of the Continuum Random Tree for an equivalence relation which is defined from Brownian labels attached to the vertices. We also verify that the Hausdorff dimension of the limit is almost surely equal to 4.
description: 45 pages Second version with minor modifications
Axion hot dark matter bound, reliably
Creators: name: Di Luzio, Luca
name: Martinelli, Guido
name: Piazza, Gioacchino
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: subject: 796
subject: * Automatic Keywords *
subject: axion: mass
subject: perturbation theory: chiral
subject: expansion: chiral
subject: higher-order: 1
subject: dark matter
subject: effective field theory
subject: lattice field theory

description: We show that the commonly adopted hot dark matter (HDM) bound on the axion mass $m_a \lesssim$ 1 eV is not reliable, since it is obtained by extrapolating the chiral expansion in a region where the effective field theory breaks down. This is explicitly shown via the calculation of the axion-pion thermalization rate at the next-to-leading order in chiral perturbation theory. We finally advocate a strategy for a sound extraction of the axion HDM bound via lattice QCD techniques.
Divergences in gravitational-wave emission and absorption from extreme mass ratio binaries
Creators: name: Barausse, Enrico
name: Berti, Emanuele
name: Cardoso, Vitor
name: Hughes, Scott A.
name: Khanna, Gaurav
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A powerful technique to calculate gravitational radiation from binary systems involves a perturbative expansion: if the masses of the two bodies are very different, the "small" body is treated as a point particle of mass $m_p$ moving in the gravitational field generated by the large mass $M$, and one keeps only linear terms in the small mass ratio $m_p/M$. This technique usually yields finite answers, which are often in good agreement with fully nonlinear numerical relativity results, even when extrapolated to nearly comparable mass ratios. Here we study two situations in which the point-particle approximation yields a divergent result: the instantaneous flux emitted by a small body as it orbits the light ring of a black hole, and the total energy absorbed by the horizon when a small body plunges into a black hole. By integrating the Teukolsky (or Zerilli/Regge-Wheeler) equations in the frequency and time domains we show that both of these quantities diverge. We find that these divergences are an artifact of the point-particle idealization, and are able to interpret and regularize this behavior by introducing a finite size for the point particle. These divergences do not play a role in black-hole imaging, e.g. by the Event Horizon Telescope.
description: 11 pages, 6 figures, matches version published in Physical Review D
Κρήτη, Σύμμαχοι και Άξονας: Στρατηγικές προτεραιότητες και πολεμικός σχεδιασμός (1939-1941)
Creators: name: Κοντάκης, Ιωάννης Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κρήτη
Β΄ Παγκόσμιος πόλεμος
Σχεδιασμός
Crete, Allies, Axis
Second World War
Planning

description: Αντικείμενο της παρούσας μελέτης είναι η διερεύνηση της θέσης που κατείχε η Κρήτη στα στρατηγικά και πολεμικά σχέδια των Συμμάχων και του Άξονα, από το ξέσπασμα του Β΄ Παγκοσμίου Πολέμου (Σεπτέμβριος 1939) μέχρι και την έναρξη της Μάχης της Κρήτης (20 Μαΐου 1941). Η οργάνωση της εργασίας είναι θεματική. Κάθε κεφάλαιο παρουσιάζει την αλληλουχία σκέψεων, πράξεων και γεγονότων που διαμόρφωσαν τα σχέδια και τις ενέργειες του εκάστοτε πρωταγωνιστή (της Φασιστικής Ιταλίας, της Γ΄ Γαλλικής Δημοκρατίας, της Βρετανικής Αυτοκρατορίας και του Γ΄ Ράιχ) αναφορικά με την Κρήτη, με απώτερο στόχο να εξεταστεί και να αξιολογηθεί η σημασία του Νησιού για τον εκάστοτε εμπόλεμο στην πολεμική αναμέτρηση μεταξύ Συμμάχων και Άξονα.
description: The purpose of this dissertation is to investigate the role of Crete in the strategic and military planning of the Allies and the Axis, from the outbreak of the Second World War until the beginning of the Battle of Crete (20th May, 1941). The structure of the project is thematic. Each chapter presents the sequence of thoughts, actions and facts which formed the plans and the tactics of each belligerent power (the Fascist Italy, the French Third Republic, the British Empire and the Third Reich) regarding Crete. The ultimate aim is the examination and critical evaluation of the Island’s significance for each of the involved parties in the warfare between the Allies and the Axis.
Heavy-Quark Potentials and AdS/QCD
Creators: name: Andreev, Oleg
name: Zakharov, Valentin I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give an example of modeling phenomenological heavy-quark potentials in a five-dimensional framework nowadays known as AdS/QCD. In particular we emphasize the absence of infrared renormalons.
description: 10 pages, 3 figures; v3: some corrections, to appear in PRD
Στρατηγικές γραπτού λόγου σε παιδιά με μαθησιακές δυσκολίες
Creators: name: Δήμου, Μαρία-Γαβριέλλα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: στρατηγικές μάθησης
γραπτός λόγος
μαθησιακές δυσκολίες
learning strategies
written language
learning disabilities

description: Στην παρούσα μελέτη διερευνήθηκε ο γραπτός αφηγηματικός λόγος και ο γραπτός επεξηγηματικός λόγος των παιδιών των τελευταίων τάξεων του δημοτικού με και χωρίς μαθησιακές δυσκολίες. Επιπλέον, διερευνήθηκε μέσω της σύγκρισης η κατανόηση και η ύπαρξη στρατηγικών μεταξύ των παιδιών. Τα αποτελέσματα της έρευνας είναι ενδιαφέροντα, αφού φάνηκε πως ο επεξηγηματικός λόγος είναι ένα αρκετά απαιτητικό είδος γραπτού λόγου και δυσκολεύει αυτή την ηλικία παιδιών
description: The present study investigated the written narrative speech and the written explanatory speech of the children of the last grades of primary school with and without learning disabilities. In addition, understanding and the existence of strategies among children was explored through comparison. The results of the research are interesting, as the expository text has been shown to be a demanding type of writing and makes this child's age difficult
Dark energy, inflation and the cosmic coincidence problem
Creators: name: Lee, Jungjai
name: Kim, Hyeong-Chan
name: Lee, Jae-Weon
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that holographic dark energy could explain why the current dark energy density is so small, if there was an inflation with a sufficient expansion in the early universe. It is also suggested that an inflation with the number of e-folds $N\simeq 65$ may solve the cosmic coincidence problem in this context. Assuming the inflation and the power-law acceleration phase today we obtain approximate formulas for the event horizon size of the universe and dark energy density as functions of time. A simple numerical study exploiting the formula well reproduces the observed evolution of dark energy. This nontrivial match between the theory and the observational data supports both inflation and holographic dark energy models.
description: final version
Bounds on exceptional Dehn filling II
Creators: name: Agol, Ian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M; 30F40

description: We show that there are at most finitely many one cusped orientable hyperbolic 3-manifolds which have more than eight non-hyperbolic Dehn fillings. Moreover, we show that determining these finitely many manifolds is decidable.
description: 13 pages, 3 figures
Epigramma, oscenità e censura (una lettura di Marziale, 1.35)
Creators: name: Alessandro, Fusi
Publisher: name: Zenodo
Year: 2019
Subjects: Martial
obscenity
censorship

description: In 1.35 Martial deals with the crucial theme of the relationship between epigram and obscenity, relating to Catullus (c. 16), who is from his first book mentioned by the epigrammatist as his main model. The epigram’s addressee, Cornelius, who complains about the impossibility to read at school Martial’s poems, could be a teacher. This hypothesis would allow to see in the original metaphor of the libelli’s castration a real censorship’s intervention, suggested or already carried out, like the one witnessed by the carolingian manuscripts of the poet.