cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Φυτοκοινωνιολογική έρευνα των ερεικώνων και των αειφύλλων πλατύφυλλων της βόρειας πλευράς του Χολομώντα:
Creators: name: Δαμιανίδης, Χρήστος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Φυτοκοινωνιολογία
Erica
αείφυλλα πλατύφυλλα
Χολομώντας (Χαλκιδική)
Phytosociology
evergreen broadleaf
Cholomon (Chalkidiki)

description: Σκοπός της παρούσας έρευνας είναι η φυτοκοινωνιολογική μελέτη των ερεικώνων και των αειφύλλων πλατύφυλλων της βόρειας πλευράς του όρους Χολομώντα (Χαλκιδική). Διενεργήθηκαν 80 φυτοληψίες με τη μέθοδο του Braun-Blanquet με σκοπό τον καθορισμό και την περιγραφή των φυτοκοινωνικών μονάδων των οικοσυστημάτων της περιοχής. Στα πλαίσια της επεξεργασίας των φυτοληψιών σε φυτοπίνακες χρησιμοποιήθηκαν ειδικά λογισμικά προγράμματα, καθώς και μετακίνηση ειδών όπου κρινόταν απαραίτητο, για βελτίωση του οπτικού αποτελέσματος. Μετά την τελική επεξεργασία και συνταξινόμηση, οι φυτοκοινωνικές μονάδες που προέκυψαν ανήκουν σε δύο κλάσεις, δυο τάξεις, μία συνένωση, μία ένωση, μία κοινότητα και δύο παραλλαγές. Η συνταξινομική σύνοψη των μονάδων βλάστησης που διακρίθηκαν είναι: ΚΛΑΣΗ: Quercetea ilicis Br.-Bl. ex A. de Bolòs Y Vayreda 1950 TAΞΗ: Quercetalia ilicis Br.-Bl. 1931 ex Br. - Bl. 1936 em. Riv.- Mart. 1974 ΚΟΙΝΟΤΗΤΑ: Arbutus unedo-Erica arborea κοινότητα Παραλλαγή από Satureja vulgaris-Rubus canescens ΚΛΑΣΗ: Cisto-Micromerietea julianae Oberd. 1954 TAΞΗ: Sarcopoterietalia spinosi Eig 1939 (= Cisto-Micromerietalia julianae Oberd. 1954) ΣΥΝΕΝΩΣΗ: Cisto-Hypericion bithynici (Oberd. 1954) Brullo et al. 1997 (= Cistion orientale Oberd. 1954) ΕΝΩΣΗ: Ericetum verticillatae (=manipuliflorae) Oberd. 1954 Παραλλαγή από Psilurus incurvus-Trifolium campestre
description: The aim of this study is the phytosociological investigation of the Erica heathlands and evergreen broadleaved shrublands of the north side of mountain Cholomon (Chalkidiki). 80 relevés were carried out using the method of Braun-Blanquet to define and describe the phytosociological units of the area ecosystems. The data process for the classification of vegetation units was carried out using special software and the standard hand method where necessary. Finally, from the process, two classes, two orders, an alliance, an association, a community and two variations were distinguished. The syntaxonomical synopsis (classification) of the vegetation units is: CLASS: Quercetea ilicis Br.-Bl. ex A. de Bolòs Y Vayreda 1950 ORDER: Quercetalia ilicis Br.-Bl. 1931 ex Br. - Bl. 1936 em. Riv.- Mart. 1974 COMMUNITY: Arbutus unedo-Erica arborea κοινότητα VARIATION from Satureja vulgaris-Rubus canescens CLASS: Cisto-Micromerietea julianae Oberd. 1954 ORDER: Sarcopoterietalia spinosi Eig 1939 (= Cisto-Micromerietalia julianae Oberd. 1954) ALLIANCE: Cisto-Hypericion bithynici (Oberd. 1954) Brullo et al. 1997 (= Cistion orientale Oberd. 1954) ASSOCIATION: Ericetum verticillatae (=manipuliflorae) Oberd. 1954 VARIATION from Psilurus incurvus-Trifolium campestre
Deep Active Inference for Partially Observable MDPs
Creators: name: van der Himst, Otto
name: Lanillos, Pablo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Deep active inference has been proposed as a scalable approach to perception and action that deals with large policy and state spaces. However, current models are limited to fully observable domains. In this paper, we describe a deep active inference model that can learn successful policies directly from high-dimensional sensory inputs. The deep learning architecture optimizes a variant of the expected free energy and encodes the continuous state representation by means of a variational autoencoder. We show, in the OpenAI benchmark, that our approach has comparable or better performance than deep Q-learning, a state-of-the-art deep reinforcement learning algorithm.
description: 1st International Workshop on Active inference, European Conference on Machine Learning (ECML/PCKDD 2020)
Sieve estimates for biased survival data
Creators: name: Sun, Jiayang
name: Wang, Bin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: S62N01, 62D05 (Primary) 62G07 (Secondary)

description: In studies involving lifetimes, observed survival times are frequently censored and possibly subject to biased sampling. In this paper, we model survival times under biased sampling (a.k.a., biased survival data) by a semi-parametric model, in which the selection function $w(t)$ (that leads to the biased sampling) is specified up to an unknown finite dimensional parameter $θ$, while the density function $f(t)$ of the survival times is assumed only to be smooth. Under this model, two estimators are derived to estimate the density function $f$, and a pseudo maximum likelihood estimation procedure is developed to estimate $θ$. The identifiability of the estimation problem is discussed and the performance of the new estimators is illustrated via both simulation studies and a real data application.
description: Published at http://dx.doi.org/10.1214/074921706000000644 in the IMS Lecture Notes--Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Recent occurrence of juvenile Atlantic mackerel (Scomber scombrus) in Icelandic waters
Creators: name: Gunnarsson, Björn
name: Jónasson, Jónas P.
name: Logeman, Kai
name: Óskarsson, Guðmundur J.
Publisher: name: ASC 2013 - Theme session N
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The known distribution of 0-group and age 1 mackerel in Icelandic waters from its first recording and to the present day is presented. Juvenile mackerel have been observed sporadically during annual groundfish surveys on the Icelandic shelf since 2006. In the autumn of 2010, however, 0-group mackerel was observed over a wide area to the south-east, south, south-west, and west of Iceland. Estimation of 0-group hatching date distributions by means of otolith microstructure analysis indicates that the juveniles may originate from spawning in the north-western part of the spawning area in the North-East Atlantic. The possible origin of 0-group mackerel in the area was investigated with the aid of a particle tracking model. It is concluded that juvenile mackerel are wintering in Icelandic waters and it seems that the nursery areas are extending
R-matrix calculation of differential cross sections for low-energy electron collisions with ground and electronically excited state O2 molecules
Creators: name: Tashiro, Motomichi
name: Morokuma, Keiji
name: Tennyson, Jonathan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Astrophysics (astro-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Differential cross sections for electron collisions with the O$_2$ molecule in its ground ${X}^{3}Σ_g^-$ state, as well as excited ${a}^{1}Δ_g$ and ${b}^{1}Σ_g^+$ states are calculated. As previously, the fixed-bond R-matrix method based on state-averaged complete active space SCF orbitals is employed. In additions to elastic scattering of electron with the O$_2$ ${X}^{3}Σ_g^-$, ${a}^{1}Δ_g$ and ${b}^{1}Σ_g^+$ states, electron impact excitation from the ${X}^{3}Σ_g^-$ state to the ${a}^{1}Δ_g$ and ${b}^{1}Σ_g^+$ states as well as '6 eV states' of ${c}^{1}Σ_u^{-}$, ${A'}^{3}Δ_u$ and ${A}^{3}Σ_u^{+}$ states is studied. Differential cross sections for excitation to the '6 eV states' have not been calculated previously. Electron impact excitation to the ${b}^{1}Σ_g^+$ state from the metastable ${a}^{1}Δ_g$ state is also studied. For electron impact excitation from the O$_2$ ${X}^{3}Σ_g^-$ state to the ${b}^{1}Σ_g^+$ state, our results agree better with the experimental measurements than previous theoretical calculations. Our cross sections show angular behaviour similar to the experimental ones for transitions from the ${X}^{3}Σ_g^-$ state to the '6 eV states', although the calculated cross sections are up to a factor two larger at large scattering angles. For the excitation from the ${a}^{1}Δ_g$ state to the ${b}^{1}Σ_g^+$ state, our results marginally agree with the experimental data except for the forward scattering direction.
title: Variability in summer distribution of juvenile albacore in the Northeast Atlantic: implications in terms of feeding success and top-down trophic impacts
Creators: name: Goñi, Nicolas
name: Arrizabalaga, Haritz
name: Arregui, Igor
name: Fraile, Igaratza
name: Santiago, Josu
Publisher: name: ASC 2013 - Theme session N
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Albacore is a highly migratory species present in the whole temperate North Atlantic. An important anomaly in its summer distribution was observed in recent years (2009 to 2011), characterized by an absence or very scarce presence in the Bay of Biscay and a higher local abundance in Southwestern Irish waters.
Generating surrogate temporal networks from mesoscale building blocks
Creators: name: Cencetti, Giulia
name: Barrat, Alain
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Surrogate networks can constitute suitable replacements for real networks, in particular to study dynamical processes on networks, when only incomplete or limited datasets are available. As empirical datasets most often present complex features and interplays between structure and temporal evolution, creating surrogate data is however a challenging task, in particular for data describing time-resolved interactions between agents. Here we propose a method to generate surrogate temporal networks that mimic such observed datasets. The method is based on a decomposition of the original dataset into small temporal subnetworks encoding local structures on a short time scale. These are used as building blocks to generate a new synthetic temporal network that will hence inherit the shape of local interactions from the dataset. Moreover, we also take into account larger scale correlations on structural and temporal dimension, using them to inform the process of assembling the building blocks. We showcase the method by generating surrogate networks for several datasets of social interactions and comparing them to the original data on two complementary aspects. First, we show that the surrogate data possess complex structural and temporal features similar to the ones of the original data. Second, we simulate several dynamical processes, describing respectively epidemic spread, opinion formation and emergence of norms in a population, and compare the outcome of these processes on the generated and original datasets. We describe the method in detail and provide an implementation so that it can be easily used in future works based on temporally evolving networks.
The influence of planetary engulfment on stellar rotation in metal-poor main-sequence stars
Creators: name: Oetjens, A.
name: Carone, L.
name: Bergemann, M.
name: Serenelli, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The method of gyrochronology relates the age of its star to its rotation period. However, recent evidence of deviations from gyrochronology relations was reported in the literature. Here, we study the influence of tidal interaction between a star and its companion on the rotation velocity of the star, in order to explain peculiar stellar rotation velocities. The interaction of a star and its planet is followed using a comprehensive numerical framework that combines tidal friction, magnetic braking, planet migration, and detailed stellar evolution models from the GARSTEC grid. We focus on close-in companions from 1 to 20 M$_{Jup}$ orbiting low-mass, 0.8 and 1 M$_{\odot}$, main-sequence stars with a broad metallicity range from [Fe/H] = -1 to solar. Our simulations suggest that the dynamical interaction between a star and its companion can have different outcomes, which depend on the initial semi-major axis and the mass of the planet, as well as the mass and metallicity of its host star. In most cases, especially in the case of planet engulfment, we find a catastrophic increase in stellar rotation velocity from 1 kms$^{-1}$ to over 40 kms$^{-1}$, while the star is still on the main-sequence. The main prediction of our model is that low-mass main-sequence stars with abnormal rotation velocities should be more common at low-metallicity, as lower [Fe/H] favours faster planet engulfment, provided occurrence rate of close in massive planets is similar at all metallicities. Our scenario explains peculiar rotation velocities of low-mass main-sequence stars by the tidal interaction between the star and its companion. Current observational samples are too small and incomplete, and thus do not allow us to test our model.
description: 10 pages, 6 figures, accepted for publication in A&A
Gamma-Ray Bursts in the Swift Era
Creators: name: Zhang, Bing
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Since the successful launch of NASA's dedicated gamma-ray burst (GRB) mission, Swift, the study of cosmological GRBs has entered a new era. Here I review the rapid observational and theoretical progress in this dynamical research field during the first two-year of the Swift mission, focusing on how observational breakthroughs have revolutionized our understanding of the physical origins of GRBs. Besides summarizing how Swift helps to solve some pre-Swift mysteries, I also list some outstanding problems raised by the Swift observations. An outlook of GRB science in the future, especially in the GLAST era, is briefly discussed.
description: Invited review for Chinese Journal of Astronomy & Astrophysics, 60 pages, to appear in 2007, ChJAA, 7, 1-50
ESPnet-se: end-to-end speech enhancement and separation toolkit designed for asr integration
Creators: name: Li, Chenda
name: Shi, Jing
name: Zhang, Wangyou
name: Subramanian, Aswin Shanmugam
name: Chang, Xuankai
name: Kamo, Naoyuki
name: Hira, Moto
name: Hayashi, Tomoki
name: Boeddeker, Christoph
name: Chen, Zhuo
name: Watanabe, Shinji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We present ESPnet-SE, which is designed for the quick development of speech enhancement and speech separation systems in a single framework, along with the optional downstream speech recognition module. ESPnet-SE is a new project which integrates rich automatic speech recognition related models, resources and systems to support and validate the proposed front-end implementation (i.e. speech enhancement and separation).It is capable of processing both single-channel and multi-channel data, with various functionalities including dereverberation, denoising and source separation. We provide all-in-one recipes including data pre-processing, feature extraction, training and evaluation pipelines for a wide range of benchmark datasets. This paper describes the design of the toolkit, several important functionalities, especially the speech recognition integration, which differentiates ESPnet-SE from other open source toolkits, and experimental results with major benchmark datasets.
description: Accepted by SLT 2021
Investigation of Unruh temperature of Black holes by using of EGUP formalism
Creators: name: Hassanabadi, Hassan
name: Farahani, Nasrin
name: Chung, Won Sang
name: Lütfüoğlu, Bekir Can
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we have used the extended generalized uncertainty principle to investigate the Unruh temperature and thermodynamic properties of a black hole. We started with a brief perusal of the Heisenberg uncertainty principle and continue with some physical and mathematical discussion for obtaining the generalized and the extended generalized uncertainty principle. Then, we obtained the Unruh temperature, mass-temperature, specific heat, and entropy functions of a black hole. We enriched the paper with graphical analysis as well as their comparisons.
Microscopic Quantum Mechanical Foundation of Fourier's Law
Creators: name: Michel, Mathias
name: Gemmer, Jochen
name: Mahler, Günter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Besides the growing interest in old concepts like temperature and entropy at the nanoscale, theories of relaxation and transport have recently regained a lot of attention. With the electronic circuits and computer chips getting smaller and smaller, a fresh look should be appropriate on the equilibrium and nonequilibrium thermodynamics at small length scales far below the thermodynamic limit, i.e. on the theoretical understanding of original macroscopic processes, e.g. transport of energy, heat, charge, mass, magnetization etc. Only from the foundations of a theory its limits of applicability may be inferred. This review tries to give an overview of the background and recent developments in the field of nonequilibrium quantum thermodynamics focusing on the transport of heat in small quantum systems.
description: 30 pages, 10 figures, review article
How does climate change impact people who use alcohol and other drugs? A scoping review of peer reviewed literature
Creators: name: MacLean, Sarah
name: De Nicola, Julia
name: Cooper, Kimberlea
name: Downey, Heather
name: Theobald, Jacqui
name: de Kleyn, Lisa
name: Denham, Todd
name: Costello, Eleanor
name: Rickards, Lauren
Publisher: name: La Trobe
Year: 2025
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences
classificationCode: 4407
subject: Policy and administration
classificationCode: 44
subject: Human society
classificationCode: 4206
subject: Public health

description: Background: The world has experienced devastating extreme weather events, alongside slow-onset processes including increasing temperature means, that scientists agree are manifestations of human-induced climate change. Even with radical action to reduce greenhouse gas emissions, effects of climate change will become increasingly severe. Objectives: The aim of this review was to classify impacts of climate change for people who use alcohol and other drugs (AoD), as reflected in peer reviewed literature. Method: A scoping review was conducted to achieve this. Included studies involved a human population, a climate change related exposure, and an AoD outcome. Studies were published in English between 1998 and November 2023. Exposure events of interest included extreme heat, fires, storms, floods, droughts, and longer-term environmental changes. 8,204 studies were screened, with 82 included for data extraction and narrative analysis. Results: Most papers describe increased AoD use, with smaller numbers showing decreased or unchanged substance use. Some studies identify unplanned withdrawal, changed drug markets, disrupted service access, specific physiological vulnerabilities of AoD users to extreme heat, and compounding effects on mental health. We note the relative absence of peer reviewed studies investigating impacts of climate change on AoD use in low-and middle-income countries. Further, few studies consider impacts that occur because of long-term or gradual climatic shifts such as environmental changes that are detrimental to livelihoods. Conclusion: It is crucial to document effects of a changing climate on people who use AoD so that policy and services can meet future needs. We call for research to remedy gaps identified in this review.
title: The distribution of blue whiting West of the British Isles and Ireland
Creators: name: Gastauer, Sven
name: Fässler, Sascha M.M.
name: O’Donnell, Ciaran
name: Høines, Åge
name: Jakobsen, Jan Arge
name: Krysov, Alexander I.
name: Smith, Leon
name: Tangen, Øyvind
name: Anthonypillai, Valantine
name: Mortensen, Ebba
Publisher: name: ASC 2013 - Theme session N
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Blue whiting is one of the commercially most important species West of the British Isles and Ireland. Although large fluctuations in the stock biomass have been observed in recent years, little remains known about the influence of the environment on the distribution and abundance of the population.
Επιφάνειες με σταθερή μέση καμπυλότητα:
Creators: name: Σιάσος, Πέτρος Λάμπρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Σταθερή μέση καμπυλότητα
Ελάχιστες επιφάνειες
Επίφάνειες του Delaunay
Constant mean curvature
Minimal surfaces
Delaunay surfaces

description: Η παρούσα εργασία πραγματεύεται κάποια βασικά αποτελέσματα, που αφορούν τις επιφάνειες με σταθερή μέση καμπυλότητα. Αναλυτικότερα, στο Πρώτο Κεφάλαιο μελετάται η αρμονική απεικόνιση μεταξύ δύο πολλαπλοτήτων Riemann. Το Δεύτερο Κεφάλαιο ασχολείται με τις ελαχιστικές επιφάνειες και την αναπαράσταση των Weierstrass – Enneper. Στη συνέχεια, ακολουθεί μια λεπτομερής παρουσίαση των επιφανειών του Delaunay, των ελικοειδών επιφανειών καθώς και της Αναπαράστασης του Kenmotsu. Τέλος, παρουσιάζονται κάποια βασικά θεωρήματα που αφορούν τις κλειστές επιφάνειες σταθερής μέσης καμπυλότητας.
description: This dissertation deals with some basic results relating to the surfaces with constant mean curvature. More specifically, in the first chapter, the harmonic map between two Riemann Manifolds is studied. The second chapter explores the Minimal surfaces and the Weierstrass – Enneper representation. Then, a detailed presentation of surfaces of Delaunay, Helicoidal surfaces, as well as the Kenmotsu representation follows. The last part of the dissertation presents some basic theorems which concern the closed surfaces with constant mean curvature.
Influence of inelastic relaxation time on intrinsic spin Hall effects in a disordered two-dimensional electron gas
Creators: name: Wang, Pei
name: Li, You-Quan
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: The influence of inelastic relaxation time on the intrinsic spin Hall effects in a disordered two-dimensional electron gas with Rashba interaction is studied, which clarifies the controversy of impurity effects in the system. We reveal that, due to the existence of inelastic scattering, the spin Hall conductivity does not vanish when the impurity concentration diminishes to zero no matter it is non-magnetically or magnetically disordered. The spin accumulation is evaluated by using the obtained spin Hall conductivity, and an alternate route is suggested to verify the intrinsic spin Hall effect by measuring the spin accumulation at different ratios.
description: Revtex 6 pages, 1 figure, extended with more details
Can the highly symmetric SU(4) spin-orbital model be realized in alpha-ZrCl3?
Creators: name: Ushakov, A. V.
name: Solovyev, I.
name: Streltsov, S. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study physical properties of a potential candidate for the physical realization of the SU(4) spin-orbital model - layered alpha-ZrCl3. Both DFT and DFT+U+SOC calculations show that this material most probably dimerizes at normal conditions. Therefore it is unlikely that symmetric SU(4) model can be used for description of magnetic properties of alpha-ZrCl3 at low temperatures. In the dimerized structure electrons occupy molecular orbitals formed by the xy orbitals. One might expect a non-magnetic ground state in this case. Interestingly the energy difference between various dimers packings is rather small and thus dimers may start to flow over the lattice as they do in Li2RuO3.
title: The distribution and behaviour of mesopelagic fishes West of the British Isles
Creators: name: Gastauer, Sven
name: Schaber, Matthias
name: Fässler, Sascha
name: Armstrong, Eric J.
name: Freijser, Joe
name: Keating, James
name: Brandhof, Jeroen
Publisher: name: ASC 2013 - Theme session N
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Species composition, distribution and behaviour of mesopelagic fishes in the area west of the British Isles were determined from blue whiting survey data 2011-2013. The mesopelagic species community in the Rockall Trough was dominated by blue whiting, Myctophids and Sternoptychids. Spatial distribution patterns changed during the observation period, but common behaviour of “true” mesopelagics such as diurnal vertical migration were regularly observed. Additionally, the absence of any diurnal migration of a stationary deep layer was also observed.
Higher Twist Contributions to the Structure Functions F_2^p(x,Q^2) and F_2^d(x,Q^2) at Large x and Higher Orders
Creators: name: Blümlein, Johannes
name: Böttcher, Helmut
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The higher twist contributions to the deeply inelastic structure functions $F_2^{p}(x,Q^2)$ and $F_2^{d}(x,Q^2)$ for larger values of the Bjorken variable $x$ are extracted extrapolating the {twist--2} contributions measured in the large $W^2$ region to the region $4 \GeV^2 \leq W^2 \leq 12.5 \GeV^2$ applying target mass corrections. We compare the results for the NLO, NNLO and N$^3$LO analyzes and include also the large $x$ at N$^4$LO to the Wilson coefficients. A gradual lowering of the higher twist contributions going from NLO to N$^4$LO is observed, which stresses the importance of higher order corrections.
description: 7 pages, 1 style file, 2 figures
Η εφαρμογή του άρθρου 82 ΣΕΚ στο δίκαιο των άυλων αγαθών:
Creators: name: Γρηγοριάδης, Λάζαρος Γρηγορίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Μονοπώλιο
Δίκαιωμα διανοητικής ιδιοκτησίας
Καταχρηστική εκμετάλλευση
Δεσπόζουσα θέση
Επίδραση στο ενδοκοινοτικό εμπόριο
Ενθάρρυνση της καινοτομίας
Monopoly
Intellectual property right
Abuse
Dominant position
Effect on the community trade
Novelty encouragement

description: Η μελέτη πραγματεύεται τη σχέση ανάμεσα στον μονοπωλιακό χαρακτήρα των δικαιωμάτων διανοητικής ιδιοκτησίας και στη διάταξη του άρθρου 82 ΣΕΚ, η οποία απαγορεύει το σχηματισμό μονοπωλίων που ενδέχεται να αναπτύξουν αποτέλεσματα περιοριστικά στρεβλωτικά στη λειτουργία του ελεύθερου ανταγωνισμού στην Ευρωπαϊκή Ενωση. Στόχος τους είναι να καταδείξει ότι τόσο ο μονοπωλιακός χαρακτήρας των δικαιωμάτων επί άυλων αγαθών όσο και το άρθρο 82 ΣΕΚ κατατείνουν στο ίδιο κοινωνικό φαινόμενο, την ενθάρρυνση της καινοτομίας
description: The monography refers to the relation between the monopolistic character of intellectual property rights and the art 82 EC which prohibits the development of monopolies, that may restrict or impari the function of the free competition in the European Community.The main target of this work is to prove that the legal monopoly of intellectual property rights as well as the provision of the art 82 EC have the same social direction the novelty encouragement
Using the Econometric Models for Identification of Risk Factors for Albanian SMEs (Case study: SMEs of Gjirokastra region)
Creators: name: Kociu, Lorenc
name: Kodra, Kledian
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Using the econometric models, this paper addresses the ability of Albanian Small and Medium-sized Enterprises (SMEs) to identify the risks they face. To write this paper, we studied SMEs operating in the Gjirokastra region. First, qualitative data gathered through a questionnaire was used. Next, the 5-level Likert scale was used to measure it. Finally, the data was processed through statistical software SPSS version 21, using the binary logistic regression model, which reveals the probability of occurrence of an event when all independent variables are included. Logistic regression is an integral part of a category of statistical models, which are called General Linear Models. Logistic regression is used to analyze problems in which one or more independent variables interfere, which influences the dichotomous dependent variable. In such cases, the latter is seen as the random variable and is dependent on them. To evaluate whether Albanian SMEs can identify risks, we analyzed the factors that SMEs perceive as directly affecting the risks they face. At the end of the paper, we conclude that Albanian SMEs can identify risk
description: 8 pages
A model for atomic and molecular interstellar gas: The Meudon PDR code
Creators: name: Petit, Franck Le
name: Bourlot, Jacques Le
name: Roueff, Evelyne
name: Nehmé, Cyrine
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the revised ``Meudon'' model of Photon Dominated Region (PDR code), presently available on the web under the Gnu Public Licence at: http://aristote.obspm.fr/MIS. General organisation of the code is described down to a level that should allow most observers to use it as an interpretation tool with minimal help from our part. Two grids of models, one for low excitation diffuse clouds and one for dense highly illuminated clouds, are discussed, and some new results on PDR modelisation highlighted.
description: accepted in ApJ supp
title: REFLECTIONS ON GAME AS AN INTERSECTIONAL TECHNOLOGY
title: REFLEXÕES SOBRE JOGO ENQUANTO TECNOLOGIA INTERSECCIONAL
titleType: AlternativeTitle
Creators: name: Gray, Kishonna L.
name: Ferreira, Suiane Costa
Publisher: name: Práticas e Cuidado: Revista de Saúde Coletiva
Year: 2024
Subjects: Jogo
Interseccionalidade
Raça
Racismo
Game
Intersectionality
Race
Racism

description: Introduction: "Práticas e Cuidado: Revista de Saúde Coletiva" is pleased to publish a lecture from our special section Conferences/Lectures, which aims to broaden the dissemination of debates and research on issues pertaining to contemporaneity and their interaction with education and health. Aim: The aim of this section was to promote a dialog with researchers who study the world of games and the concept of intersectionality. Method: Our speaker is Dr. Kishonna Gray, who is an associate professor of writing, rhetoric and digital studies and African studies at the University of Kentucky. She is an interdisciplinary and intersectional digital media scholar whose research areas include identity, performance and online environments, embodied deviance, cultural production, video games and black cyberfeminism. This lecture was mediated by Dr. Suiane Costa, a researcher in the field of games at the interface with health and education. Results: Gray addressed the inevitable chains that link marginalized populations to stereotypical frames and limited narratives in video games. She also discussed how the multiple identities of black players affect their gaming experiences.
description: Introdução: A Práticas e Cuidado: Revista de Saúde Coletiva tem a satisfação de publicar uma palestra da nossa seção especial Conferências/Palestra que se propõe a ampliar a divulgação de debates e pesquisas que trazem questões inerentes à contemporaneidade e sua interface com a educação e a saúde. Objetivo: Essa seção teve como objetivo promover o diálogo com pesquisadoras e pesquisadores que se dedicam aos estudos sobre o mundo dos jogos e o conceito de interseccionalidade. Método: Nossa palestrante é a Drª. Kishonna Gray, que é professora associada de redação, retórica e estudos digitais e estudos africanos na Universidade de Kentucky. Ela é uma acadêmica interdisciplinar e interseccional de mídia digital cujas áreas de pesquisa incluem identidade, performance e ambientes online, desvio corporificado, produção cultural, videogames e ciberfeminismo negro. A mediação dessa palestra foi realizada pela Drª Suiane Costa, pesquisadora da área de jogos na interface com saúde e educação. Resultados: Gray abordou sobre as cadeias inevitáveis que ligam as populações marginalizadas a quadros estereotipados e narrativas limitadas nos videogames. Discutiu ainda como as múltiplas identidades dos jogadores negros afetam suas experiências de jogo.

 

Como citar conforme a ABNT: GRAY, K. L.; FERREIRA, S. C. Reflexões sobre jogo enquanto tecnologia interseccional. Práticas e Cuidado: Revista de Saúde Coletiva, v. 5, p. e20564, 2024. DOI: 10.5281/zenodo.13826102 Disponível em: https://revistas.uneb.br/index.php/saudecoletiva/article/view/20564
Higher Derivative Scalar Field Theory in the First Order Formalism
Creators: name: Kruglov, S. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The scalar field theory with higher derivatives is considered in the first order formalism. The field equation of the forth order describes scalar particles possessing two mass states. The first order relativistic wave equation in the 10-dimensional matrix form is derived. We find the relativistically invariant bilinear form and corresponding Lagrangian. The canonical energy-momentum tensor and density of the electromagnetic current are obtained. Dynamical and non-dynamical components of the wave function are separated and the quantum-mechanical Hamiltonian is found. Projection operators extracting solutions of field equations for definite energy and different mass states of particles are obtained. The canonical quantization of scalar fields with two mass states is performed, and propagators are found in the formalism considered.
description: 15 pages, to be published in the Special Issue of Annales Fond. Broglie dedicated to Ettore Majorana, corrected typos
Οι ποντιακές πόλεις Τραπεζούς, Τρίπολις, Κερασούς, Κοτύωρα, Αμισός, Πάφρα, Σινώπη, Αμάσεια. Η ιστορία και τα ελληνικά μνημεία τους:
Creators: name: Αλεξιάδης, Περικλής Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Πόντος
Ιστορία
Μνημεία
Pontos
History
Monuments

description: Η μεταπτυχιακή διατριβή επιχειρεί μια συνολική παρουσίαση του Ελληνισμού στις σπουδαιότερες πόλεις του Πόντου Τραπεζούντα, Τρίπολη, Κερασούντα, Κοτύωρα, Αμισό, Πάφρα, Σινώπη και Αμάσεια, στις νότιες ακτές της Μαύρης Θάλασσας. Περιέχει, επίσης, πλούσιο φωτογραφικό υλικό των ιστορικών μνημείων των παραπάνω πόλεων. Στις ανωτέρω πόλεις κυριάρχησε ο ελληνικός πολιτισμός από την αρχαϊκή εποχή, με την έλευση των Ιώνων της Μιλήτου (μέσα του 8ου π.Χ. αι.), μέχρι τους Βυζαντινούς χρόνους και την εποχή των Μεγαλοκομνηνών αυτοκρατόρων της Τραπεζούντος. Η τουρκική κατάκτηση έγινε αιτία όλες οι πόλεις του Πόντου να περιπέσουν σε αφάνεια. Η ανάπτυξη του Νέου Ελληνισμού στιγματίστηκε από τη νεοτουρκική και κεμαλική εθνοκάθαρση. Ο Απόστολος Ανδρέας ο Πρωτόκλητος ήταν ο θεμελιωτής του Χριστιανισμού στον Πόντο, με πρώτο σταθμό της περιοδείας του την Αμισό, αμέσως μετά την Πεντηκοστή.
description: This thesis attempts a total presentation of Hellenism in the major cities of Pontos Trapezus, Tripoli, Kerasus, Kotyora, Amisοs, Pafra, Sinopi and Amasya, in the southern coasts of Black Sea. It contains, also, rich photographic material of historical monuments of these cities. In these cities dominated Greek culture from the Archaic period, with the advent of the Ionians of Militos (mid-8th century BC), up to the Byzantine period and the era of the Megalokomninon emperors of Trapezus. The Turkish conquest became the cause of all the cities of Pontοs to fall into obscurity. The growth of New Hellenism in Turkey, was stigmatised by the young Turkism and Kemalist ethnic cleansing. St. Andrew the Protoklitos was the founder of Christianity in Pontos, with the first stop of his tour in Amisos immediately after Pentecost.
Generalised energy conservation law for the wave equations with variable propagation speed
Creators: name: Hirosawa, Fumihiko
name: Wirth, Jens
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L15

description: We investigate the long time behaviour of the $L^2$-energy of solutions to wave equations with variable speed. The novelty of the approach is the combination of estimates for higher order derivatives of the coefficient with a stabilisation property.
description: 23 pages, further examples and counter-examples included
Strongly lensed gravitational waves as the probes to test the cosmic distance duality relation
Creators: name: Lin, Hai-Nan
name: Li, Xin
name: Tang, Li
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The cosmic distance relation (DDR) associates the angular diameters distance ($D_A$) and luminosity distance ($D_L$) by a simple formula, i.e., $D_L=(1+z)^2D_A$. The strongly lensed gravitational waves (GWs) provide a unique way to measure $D_A$ and $D_L$ simultaneously to the GW source, hence can be used as probes to test DDR. In this paper, we prospect the use of strongly lensed GW events from the future Einstein Telescope to test DDR. We write the possible deviation of DDR as $(1+z)^2D_A/D_L=η(z)$, and consider two different parametrizations of $η(z)$, namely, $η_1(z)=1+η_0 z$ and $η_2(z)=1+η_0 z/(1+z)$. Numerical simulations show that, with about 100 strongly lensed GW events observed by ET, the parameter $η_0$ can be constrained at $1.3\%$ and $3\%$ levels for the first and second parametrizations, respectively.
description: 8 pages, 3 figures
title: Experimental jigging with light attraction on European flying squid (Todarodes sagittatus) in Icelandic waters with notes on earlier trawl-fishing trials and traces of the species annually recorded in bottom trawl surveys.
Creators: name: Jónsson, Einar
name: Ingóflsson, Ólafur A
Publisher: name: ASC 2013 - Theme session N
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. In September 2010 The Marine Research Institute (MRI) conducted an expedition aimed at fishery trials for squid (Todarodes sagittatus). A research vessel (186 BWT) was equipped with modern jigging machines as well as two kinds of light-tools to attract the squid and a relatively vast off-shore area was covered. The impetus for the experiment were growing signs of a comeback of the squid but this time more off-shore above the slopes of the Icelandic continental shelf rather than in in-shore waters as in the earlier days. In this poster the results – not very promising in terms of squid catches – of the jigging trial (methodology, and area covered) are presented. The poster describes to some extent results of earlier fishing trials with pelagic trawls and biological parameters (length, weight maturity) of the squid sampled are shortly mentioned. Traces of Todarodes are annually found in the Icelandic autumn bottom trawl surveys especially after the year 2000 culminating in 2008. Results from squid recorded in these surveys are also partly presented. Attention is also paid to the newly started (2010, 2013) registration of Todarodes in the Icelandic fish-statistic through by-catch of the species in the far off-shore blue whiting fisheries.
Διαχείριση Χρηματοοικονομικών Κινδύνων Στοχαστικών Χαρτοφυλακίων
Creators: name: Κρίτογλου, Αναστάσιος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Χρηματοοικονομική Μοντελοποίηση
Διαχείριση Κινδύνου
Στοχαστικά Χαρτοφυλάκια
Financial Modeling
Risk Management
Stochastic Portfolios

description: Στην παρούσα μεταπτυχιακή διπλωματική εργασία εισάγουμε τις βασικές αρχές χρηματοοικονομικής μοντελοποίησης και τις θεμέλιες δομές δημιουργίας επενδυτικών χαρτοφυλακίων και διαχείρισης των χρηματοοικονομικών τους κινδύνων. Περιγράφουμε τη σύγχρονη θεωρία χαρτοφυλακίου και εξετάζουμε διάφορες περιπτώσεις επενδυτικών χαρτοφυλακίων με σκοπό την ελαχιστοποίηση των χρηματοοικονομικών τους κινδύνων μέσα από μεθόδους επιχειρησιακής έρευνας. Παρουσιάζουμε τη γενίκευση της θεωρίας χαρτοφυλακίου, η οποία διατυπώνεται μέσω της θεωρίας της κεφαλαιαγοράς, ενώ παράλληλα εξετάζουμε τον τρόπο με τον οποίο τα διάφορα χρηματοοικονομικά στοιχειά μιας χρηματαγοράς συσχετίζονται με το γενικευμένο χαρτοφυλάκιο της. Επίσης, παραθέτουμε τις βασικές αρχές θεμελίωσης της στοχαστικής συμπεριφοράς των αποδόσεων και εν γένει των τιμών των χρηματοοικονομικών στοιχείων, και αναπτύσσουμε τις θεμελιώδεις δομές μοντελοποίησης στοχαστικών χαρτοφυλακίων και διαχείρισης των χρηματοοικονομικών τους κίνδυνων σε συνεχή χρόνο μέσα από μεθόδους της στοχαστικής ανάλυσης.
description: In the present master diploma thesis we introduce the basic principles of financial modeling and consider the concepts of efficiency and financial risk. We study the structure of investment portfolios and the quantitative techniques of financial risk management. We describe the modern portfolio theory and employ case studies to minimize financial risks of investment portfolios through quantitative methods of operations research. Furthermore, we present the generalization of modern portfolio theory obtained through capital market theory, and examine how financial assets are associated with the generalized market portfolio. Moreover we introduce the basic concepts and definitions of stochastic behavior of financial assets and we present the principles of stochastic portfolio modeling and their financial risk management in continuous time through quantitative methods of stochastic calculus.
A polarised infrared flare from Sagittarius A* and the signatures of orbiting plasma hotspots
Creators: name: Trippe, S.
name: Paumard, T.
name: Ott, T.
name: Gillessen, S.
name: Eisenhauer, F.
name: Martins, F.
name: Genzel, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this article we summarise and discuss the infrared, radio, and X-ray emission from the supermassive black hole in the Galactic Centre, SgrA*. We include new results from near-infrared polarimetric imaging observations obtained on May 31st, 2006. In that night, a strong flare in Ks band (2.08 microns) reaching top fluxes of ~16 mJy could be observed. This flare was highly polarised (up to ~40%) and showed clear sub-structure on a time scale of 15 minutes, including a swing in the polarisation angle of about 70 degrees. For the first time we were able to observe both polarised flux and short-time variability, with high significance in the same flare event. This result adds decisive information to the puzzle of the SgrA* activity. The observed polarisation angle during the flare peak is the same as observed in two events in 2004 and 2005. Our observations strongly support the dynamical emission model of a decaying plasma hotspot orbiting SgrA* on a relativistic orbit. The observed polarisation parameters and their variability with time might allow to constrain the orientation of accretion disc and spin axis with respect to the Galaxy.
description: 9 pages, 8 figures, accepted for publication in MNRAS
State estimation in turbulent channel flow from limited observations
Creators: name: Wang, Mengze
name: Zaki, Tamer A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Estimation of the initial state of turbulent channel flow from limited data is investigated using an adjoint-variational approach. The data are generated from a reference direct numerical simulation (DNS) which is sub-sampled at different spatiotemporal resolutions. When the velocity data are at 1/4096 the spatiotemporal resolution of DNS, the correlation coefficient between the true and adjoint-variational estimated state exceeds 99 percent. The robustness of the algorithm to observation noise is demonstrated. In addition, the impact of the spatiotemporal density of the data on estimation quality is evaluated, and a resolution threshold is established for a successful reconstruction. The critical spanwise data resolution is proportional to the Taylor microscale, which characterizes the domain of dependence of an observation location. Due to mean advection, either the streamwise or temporal data resolution must satisfy a criterion based on the streamwise Taylor microscale. A second configuration is considered where the sub-sampled data are comprised of velocities in the outer layer and wall shear stresses only. The near-wall flow statistics and coherent structures, although not sampled, are accurately reconstructed, which is possible because of the coupling between the outer flow and near-wall motions. Finally, the most challenging configuration is addressed where only the spatiotemporally resolved wall stresses are observed. The estimation remains accurate within the viscous sublayer and deteriorates significantly with distance from the wall. In wall units, this trend is nearly independent of the Reynolds number considered, and is indicative of the fundamental difficulty of reconstructing wall-detached motions from wall data.
description: 29 pages, 26 figures
Η ενδοσχολική επιμόρφωση των εκπαιδευτικών και ο θεσμός του σχολικού συμβούλου:
Creators: name: Αντωνίου, Αντωνία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Ενδοσχολική επιμόρφωση
Σχολικοί σύμβουλοι
Εκπαιδευτικός
School – focused training
School advisors
Teacher

description: Στόχος της συγκεκριμένης εργασίας ήταν να μελετήσει την ενδοσχολική επιμόρφωση ως μία μορφή επιμόρφωσης που έχει επίκεντρο τη βελτίωση του έργου της σχολικής μονάδας και να διαπιστώσει αν ο ρόλος του σχολικού συμβούλου μπορεί να αξιοποιηθεί και να συμβάλει στη διάχυση αυτής της μορφής επιμόρφωσης και πως. Η ανάλυση του υλικού της έρευνας και η συζήτηση των πορισμάτων της στηρίχτηκε στην ποιοτική ανάλυση περιεχομένου. Συμπερασματικά διαπιστώνεται, μεταξύ των άλλων ότι για την διάχυση της ενδοσχολικής επιμόρφωσης από τους σχολικούς συμβούλους απαιτείται πολύ καλή γνώση της φιλοσοφίας, των χαρακτηριστικών αλλά και της διαδικασίας υλοποίηση προγραμμάτων εκπαίδευσης ενηλίκων, να συμμετέχουν και να παρακολουθούν την πορεία του προγραμματισμού της σχολικής μονάδας και να μοιράζονται το ρόλο του επιμορφωτή με τους εκπαιδευτικούς της αρμοδιότητας τους στο πλαίσιο των επιμορφωτικών τους δράσεων.
description: The aim of this thesis was to study the school-focused training programs as a form of teacher training, that it is centered around the improvement of the school mission and at the same time to confirm whether the role of the school advisor can be exploited in a such way to promote this type of training and the ways to do so. The analysis of the research material and the discussion around the finding were based on a qualitative context analysis. We have concluded that, the dissemination of the school-focused training programs by the school advisors requires a deep knowledge of the philosophy, characteristics as well as the procedures for the realization of school-focused training programs intended for adults. The school advisors need to contribute in and monitor the various stages of school programming and share their experiences and responsibilities with the teachers within the training context.