cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Superfluid Insulator Transitions of Hard-Core Bosons on the Checkerboard Lattice
Creators: name: Sen, Arnab
name: Damle, Kedar
name: Senthil, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study hard-core bosons on the checkerboard lattice with nearest neighbour unfrustrated hopping $t$ and `tetrahedral' plaquette charging energy $U$. Analytical arguments and Quantum Monte Carlo simulations lead us to the conclusion that the system undergoes a zero temperature ($T$) quantum phase transition from a superfluid phase at small $U/t$ to a large $U/t$ Mott insulator phase with $ρ$ = 1/4 for a range of values of the chemical potential $μ$. Further, the quarter-filled insulator breaks lattice translation symmetry in a characteristic four-fold ordering pattern, and occupies a lobe of finite extent in the $μ$-$U/t$ phase diagram. A Quantum Monte-Carlo study slightly away from the tip of the lobe provides evidence for a direct weakly first-order superfluid-insulator transition away from the tip of the lobe. While analytical arguments leads us to conclude that the transition {\em at} the tip of the lobe belongs to a different landau-forbidden second-order universality class, an extrapolation of our numerical results suggests that the size of the first-order jump does not go to zero even at the tip of the lobe.
description: published version
Computational complexity of the landscape I
Creators: name: Denef, Frederik
name: Douglas, Michael R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study the computational complexity of the physical problem of finding vacua of string theory which agree with data, such as the cosmological constant, and show that such problems are typically NP hard. In particular, we prove that in the Bousso-Polchinski model, the problem is NP complete. We discuss the issues this raises and the possibility that, even if we were to find compelling evidence that some vacuum of string theory describes our universe, we might never be able to find that vacuum explicitly. In a companion paper, we apply this point of view to the question of how early cosmology might select a vacuum.
description: JHEP3 Latex, 53 pp, 2 .eps figures
Electrically controlled emission from singlet and triplet exciton species in atomically thin light emitting diodes
Creators: name: Joe, Andrew Y.
name: Jauregui, Luis A.
name: Pistunova, Kateryna
name: Valdivia, Andrés M. Mier
name: Lu, Zhengguang
name: Wild, Dominik S.
name: Scuri, Giovanni
name: De Greve, Kristiaan
name: Gelly, Ryan J.
name: Zhou, You
name: Sung, Jiho
name: Sushko, Andrey
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Smirnov, Dmitry
name: Lukin, Mikhail D.
name: Park, Hongkun
name: Kim, Philip
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Excitons are composite bosons that can feature spin singlet and triplet states. In usual semiconductors, without an additional spin-flip mechanism, triplet excitons are extremely inefficient optical emitters. Transition metal dichalcogenides (TMDs), with their large spin-orbit coupling, have been of special interest for valleytronic applications for their coupling of circularly polarized light to excitons with selective valley and spin$^{1-4}$. In atomically thin MoSe$_2$/WSe$_2$ TMD van der Waals (vdW) heterostructures, the unique atomic registry of vdW layers provides a quasi-angular momentum to interlayer excitons$^{5,6}$, enabling emission from otherwise dark spin triplet excitons. Here, we report electrically tunable spin singlet and triplet exciton emission from atomically aligned TMD heterostructures. We confirm the spin configurations of the light-emitting excitons employing magnetic fields to measure effective exciton g-factors. The interlayer tunneling current across the TMD vdW heterostructure enables the electrical generation of singlet and triplet exciton emission in this atomically thin PN junction. We demonstrate electrically tunability between the singlet and triplet excitons that are generated by charge injection. Atomically thin TMD heterostructure light emitting diodes thus enables a route for optoelectronic devices that can configure spin and valley quantum states independently by controlling the atomic stacking registry.
description: Extended work of previous study: arXiv:1912.07678
Crossing the line: body and physical activity as an expression of social processes
Creators: name: Corvino, Isabella
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2023

description: Il nostro proposito è di contribuire a sollecitare la riflessione sullo sport e sull’attività fisica non come temi legati al mero tempo libero, ma quali strumenti per la realizzazione di dimensioni collettive e individuali che sappiano favorire processi di conoscenza e consapevolezza rispetto alla corporeità, le emozioni e l’immaginario che sono alla base della cultura sportiva e del vivere quotidiano.
description: Eracle. Journal of Sport and Social Sciences, Vol 6 No 1 (2023): Crossing the line: body and physical activity as an expression of social processes
A Synoptic View of the Magellanic Clouds: VMC, Gaia, and Beyond
Creators: name: Cioni, Maria-Rosa L.
name: Romaniello, Martino
name: Anderson, Richard I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The year 2019 marked the quincentenary of the arrival in the southern hemisphere of Ferdinand Magellan, the namesake of the Magellanic Clouds, our nearest example of dwarf galaxies in the early stages of a minor merging event. These galaxies have been firmly established as laboratories for the study of variable stars, stellar evolution, and galaxy interaction, as well as being anchors for the extragalactic distance scale. The goal of this conference was to provide fertile ground for shaping future research related to the Magellanic Clouds by combining state-of-the-art results based on advanced observational programmes with discussions of the highly multiplexed wide-field spectroscopic surveys that will come online in the 2020s.
description: 7 pages, 1 figure, report on ESO workshop, ESO Headquarters, Garching, Germany, 9-13 September 2019
ERICC Policy Brief _ Expanding Refugee Access to National Education Systems: The State of the Evidence on Enabling Factors, Constraints, and Interventions
Creators: name: ERICC Consortium
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy

description: Access to education remains out of reach for half of refugee children and youth. Average gross enrolment rates stand at 38% for pre-primary, 65% for primary, 41% for secondary and 6% for tertiary education. Despite increasing research, evidence remains limited of what works, how, for whom, under what conditions and at what cost to improve refugee student access in countries of first asylum to national education systems (NES). To inform evidence-based decision making across policy, practice, advocacy and research, the ERICC programme reviewed and synthesised existing research on refugee access to NES. This policy brief summarises actionable findings from the ERICC Evidence Review: Expanding Refugee Access to National Education Systems: The State of the Evidence (forthcoming) to further highlight evidence gaps and research needs. These findings may be particularly useful for government agencies, donor organisations, humanitarian and development actors, and research bodies. The policy brief describes the substantive, methodological and geographic scope of existing evidence on refugee student access to NES. It then presents findings about six global-, regional- and national-level enabling factors and constraints for refugee student access to NES: financing, education infrastructure and sector capacity, political will and support for refugee inclusion, governance and coordination arrangements, non-state actor engagement and data systems. Local and child-level risk and protective factors further influencing refugee access to NES are presented in the third section of the brief, including: gender, socioeconomic and legal status, language barriers, perceptions of education relevance, and xenophobia, gender-based violence and intolerance. The fourth section synthesises evidence on interventions used in refugee-hosting contexts to improve student access: global and regional frameworks that support refugee inclusion; double shift schools; recognition, validation and accreditation of prior learning, flexible learning programmes, and host country language acquisition; cash transfers; and school feeding. Finally, this brief presents research needs which stakeholders can prioritise to significantly improve the evidence base for (cost-)effective, inclusive and scalable interventions that enhance refugee student access to education.
Promuovere la pace attraverso lo sport: il caso delle calciatrici afgane
Creators: name: Gurashi, Romina
name: Sodano, Pina
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2023

description: Through a microsociological analysis, the present essay aims to address the issue of peace and the role of female sport in society. As we demonstrate, there is a strong correlation between the creation of conditions of peace and the practice of sport, as well as between the practice of sport and the involvement of political choices. In this context, sport – and more precisely football – is found to represent a tool for female empowerment in Afghanistan. Through sport and the use of the latest technologies (like WhatsApp, Telegram, Facebook etc.) these young women resist the dominant political force of the Talibans and give themselves an autonomous collective representation. However, despite their compliance with political and religious norms, and the use of appropriate clothing they had to flee their country and continue promoting peace and female empowerment from abroad.
description: Eracle. Journal of Sport and Social Sciences, Vol 6 No 1 (2023): Crossing the line: body and physical activity as an expression of social processes
1/f Tunnel Current Noise through Si-bound Alkyl Monolayers
Creators: name: Clement, Nicolas
name: Pleutin, Stephane
name: Seitz, Oliver
name: Lenfant, Stephane
name: Vuillaume, Dominique
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report low frequency tunnel current noise characteristics of an organic monolayer tunnel junction. The measured devices, n-Si/alkyl chain (C18H37)/Al junctions, exhibit a clear 1/ f γ power spectrum noise with 1< γ <1.2. We observe a slight bias-dependent background of the normalized current noise power spectrum (SI/I^2). However, a local increase is also observed over a certain bias range, mainly if V > 0.4 V, with an amplitude varying from device to device. We attribute this effect to an energy-dependent trap-induced tunnel current. We find that the background noise, SI, scales with >. A model is proposed showing qualitative agreements with our experimental data.
description: Phys. Rev. B, in press
Media, Society and Cycling Cultures: Editorial
Creators: name: Landri, Paolo
name: Tirino, Mario
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2022

description: Cycling is living in a new season. The policies of restriction for public transport during the Coronavirus epidemic, the Anthropocene debate, and the need to rethink the urban and extra-urban mobilities for carrying out a model of sustainable economic and societal development are translating into renewed attention towards cycling. Consequently, it can be registered an increase in the production and selling of bikes and an impulse to the diffusion of the cycling practice in different countries. 
description: Eracle. Journal of Sport and Social Sciences, Vol 5 No 1 (2022): Media, Society and Cycling Cultures
Analyzing Cooperative Monitoring and Dissemination of Critical Mobile Events by VANETs
Creators: name: Andrade, Everaldo
name: Santos, Aldri
name: Maciel, Paulo
name: Matos, Fernando
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The treatment of mobile and simultaneous critical urban events requires effective actions by the appropriate authorities. Additionally it implies communication challenges in the speed and accuracy of their occurrence by the entities, as well as dealing with the dynamics and speed in these environments. Cooperative solutions with shared resources that address these challenges become a real option in helping to handle these events. This paper presents an evaluation of dynamic monitoring and collaborative dissemination supported by vehicular groups. It aims to analyze the impact of multiple mobile and fixed events in an urban environment on information propagation, considering barriers imposed by the events and the environment. Differently from other studies in the literature, this work takes into account both fixed and mobile events, as well as simultaneous events. NS3 results show that the evaluated system monitored at least 87% and 51.5% of the time for mobile and fixed events respectively, and delivered information over 77% and 50% of the time for those events, with average delay remains close to 0.3s in most scenarios. The results also reveal that a more continuous monitoring of the mobile events is highly dependent on the orientation of the vehicles. The main contribution of this work consists of the performance analysis of both fixed and mobile simultaneous events to support studies on how moving events impact on the dissemination and delivery of real-time data, and thus encouraging the development of new data dissemination protocols for VANETs.
description: This work has been submitted to the Wireless Networks (WINE) journal for possible publication
Comparison of the estimation of the degree of polarization from four or two intensity images degraded by speckle noise
Creators: name: Roche, Muriel
name: Réfrégier, Philippe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Retrieval (cs.IR)
subject: Optics (physics.optics)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Active polarimetric imagery is a powerful tool for accessing the information present in a scene. Indeed, the polarimetric images obtained can reveal polarizing properties of the objects that are not avalaible using conventional imaging systems. However, when coherent light is used to illuminate the scene, the images are degraded by speckle noise. The polarization properties of a scene are characterized by the degree of polarization. In standard polarimetric imagery system, four intensity images are needed to estimate this degree . If we assume the uncorrelation of the measurements, this number can be decreased to two images using the Orthogonal State Contrast Image (OSCI). However, this approach appears too restrictive in some cases. We thus propose in this paper a new statistical parametric method to estimate the degree of polarization assuming correlated measurements with only two intensity images. The estimators obtained from four images, from the OSCI and from the proposed method, are compared using simulated polarimetric data degraded by speckle noise.
High accuracy results for the energy levels of the molecular ions H2+, D2+ and HD+, up to J=2
Creators: name: Karr, Jean-Philippe
name: Hilico, Laurent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a nonrelativistic calculation of the rotation-vibration levels of the molecular ions H2+, D2+ and HD+, relying on the diagonalization of the exact three-body Hamiltonian. The J=2 levels are obtained with a very high accuracy of 10^{-14} a.u. (for most levels) representing an improvement by five orders of magnitude over previous calculations. The accuracy is also improved for the J=1 levels of H2+ and D2+ with respect to earlier works. Moreover, we have computed the sensitivities of the energy levels with respect to the mass ratios, allowing these levels to be used for metrological purposes.
description: 11 pages
Ground penetrating radar applications in hydrology
Creators: name: Rea, Jane Mary Anastasia
Publisher: name: University of British Columbia
Year: 2009

description: The goal of this thesis is to develop techniques for using ground penetrating radar (GPR) to characterize aquifers for groundwater modelling. GPR is a shallow geophysical technique which can be used to image up to 30 m into the subsurface. This technique is sensitive to many of the same parameters that affect the hydraulic properties of geologic material. In addition it is a rapid, relatively inexpensive means of obtaining high resolution images of the subsurface. For these reasons GPR is well suited for providing the information needed to constrain ground water models. I have developed three different techniques for analysing and interpreting GPR data for ground water modelling. The first is a method of obtaining the correlation structure of the subsurface through geostatistical analysis of GPR data. The second technique involves analysing the attenuation of radar data to estimate the electrical conductivity of the geologic material being imaged. The final technique is a method of dividing the radar data into separate units, called radar architectural elements, which can be used as building blocks for a ground water model. This technique has been tested by applying it to a shallow unconfiried aquifer in south-western British Columbia. The research presented in this thesis leads to a new integrated approach to GPR interpretation in which the same data set can be used to provide different types of information to constrain ground water models.
Observations of the Disk/Jet Coupling of MAXI J1820+070 During its Descent to Quiescence
Creators: name: Shaw, A. W.
name: Plotkin, R. M.
name: Miller-Jones, J. C. A.
name: Homan, J.
name: Gallo, E.
name: Russell, D. M.
name: Tomsick, J. A.
name: Kaaret, P.
name: Corbel, S.
name: Espinasse, M.
name: Bright, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Black hole X-ray binaries in the quiescent state (Eddington ratios typically $\lesssim$10$^{-5}$) display softer X-ray spectra (photon indices $Γ\sim2$) compared to higher-luminosity black hole X-ray binaries in the hard state ($Γ\sim1.7$). However, the cause of this softening, and its implications for the underlying accretion flow, are still uncertain. Here, we present quasi-simultaneous X-ray and radio spectral monitoring of the black hole X-ray binary MAXI J1820$+$070 during the decay of its 2018 outburst and of a subsequent re-flare in 2019, providing an opportunity to monitor a black hole X-ray binary as it actively transitions into quiescence. We probe 1-10 keV X-ray luminosities as low as $L_{\rm X}\sim4\times10^{32}$ erg s$^{-1}$, equivalent to Eddington fractions of $\sim4\times10^{-7}$. During its decay towards quiescence, the X-ray spectrum of MAXI J1820$+$070 softens from $Γ\sim1.7$ to $Γ\sim2$, with the softening taking $\sim30$d, and completing at $L_{\rm X}\approx10^{34}$ erg s$^{-1}$ ($\approx10^{-5} L_{\rm Edd}$). While the X-ray spectrum softens, the radio spectrum generally remains flat/inverted throughout the decay. We also find that MAXI J1820$+$070 follows a radio ($L_{\rm R}$) -- X-ray luminosity correlation of the form $L_{\rm R} \propto L_{\rm X}^{0.52\pm0.07}$, making it the fourth black hole system to follow the so-called `standard track' unbroken over several (in this case, four) decades in $L_{\rm X}$. Comparing the radio/X-ray spectral evolution(s) with the $L_{\rm R}$ -- $L_{\rm X}$ plane, we find that the X-ray softening is consistent with X-rays produced by Comptonization processes in a radiatively inefficient accretion flow. We generally disfavor X-ray emission originating solely from within the jet, with the possible exception of X-rays produced via synchrotron self-Compton processes.
description: 19 pages, 5 figure, 1 appendix. Accepted for publication in ApJ
Static Fundamental Solutions of Einstein Equations and Superposition Principle in Relativistic Gravityv
Creators: name: Fiziev, P P
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that Einstein equations are compatible with the presence of massive point particle idealization and find the corresponding two parameter family of solutions. They are complete defined by the bare mechanical mass $M>0$ and the Keplerian mass $m>0$ ($m < M$) of the point source of gravity. The global analytical properties of these solutions in the complex plane define a unique preferable radial variable of the one particle problem. These new solutions are fundamental solutions of the quasi-linear Einstein equations. We introduce and discuss a novel nonlinear superposition principle for solutions of Einstein equations and discover the basic role of the relativistic analog of the Newton gravitational potential. For the relativistic potential we introduce a simple quasi-linear superposition principle as a new physical requirement for the initial conditions for Einstein equations, thus justifying the instant gravistatic case for N particle system. This superposition principle allows us to sketch a new theory of the gravitational mass defect. In it a specific Mach-like principle for the Keplerian mass $m$ is valid, i.e. it depends on the mass distribution in the universe, in contrast to the bare mass $M$, which remains a true constant. Several basic examples both of discrete and of continuous mass distributions are considered.
description: Talk, given at the Conference Gravity, Astrophysics and Strings at Black Sea, Kiten, Bulgaria 2005. 40 pages, 6 figures, latex file
Processing of nanostructured bulk Fe-Cr alloys by severe plastic deformation
Creators: name: Weissitsch, Lukas
name: Stückler, Martin
name: Wurster, Stefan
name: Pippan, Reinhard
name: Bachmaier, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The processing of binary alloys consisting of ferromagnetic Fe and antiferromagnetic Cr by severe plastic deformation (SPD) with different chemical compositions has been investigated. Although the phase diagram exhibits a large gap in the thermodynamical equilibrium at lower temperatures, it is shown that techniques based on SPD help to overcome common processing limits. Different processing routes including initial ball milling (BM) and arc melting (AM) and a concatenation with annealing treatments prior to high-pressure torsion (HPT) deformation are compared in this work. Investigation of the deformed microstructures by electron microscopy and synchrotron X-ray diffraction reveal homogeneous, nanocrystalline microstructures for HPT deformed AM alloys. HPT deformation of powder blends and BM powders leads to an exorbitant increase in hardness or an unusual fast formation of a $σ$-phase and therefore impede successful processing.
Influence of external driving on decays in the geometry of the LiCN isomerization
Creators: name: Feldmaier, Matthias
name: Reiff, Johannes
name: Benito, Rosa M
name: Borondo, Florentino
name: Main, Jörg
name: Hernandez, Rigoberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The framework of transition state theory relies on the determination of a geometric structure identifying reactivity. It replaces the laborious exercise of following many trajectories for a long time to provide chemical reaction rates and pathways. In this paper, recent advances in constructing this geometry even in time-dependent systems are applied to the LiCN $\rightleftharpoons$ LiNC isomerization reaction, driven by an external field. We obtain decay rates of the reactant population close to the transition state by exploiting local properties of the dynamics of trajectories in and close to it. We find that the external driving has a large influence on these decay rates when compared to the non-driven isomerization reaction. This, in turn, provides renewed evidence for the possibility of controlling chemical reactions, like this one, through external time-dependent fields.
description: Main article has 11 pages, 6 figures. Supplemental material has 4 pages, 1 figure
Honey, HoneyBee Venom Melittin and SARS-Cov-2
Creators: name: Besharati, Mohammad Reza
name: Izadi, Mohammad
name: Alireza Talebpour
Publisher: name: Zenodo
Year: 2021
Subjects: Honey, Melittin, Docking Study, SARS-Cov-2, Honey Consumption

description: Honey, HoneyBee Venom Melittin and SARS-Cov-2
Η κοινωφελής εργασία πριν και μετά τον ν.3904/2010:
Creators: name: Κλιάνης, Ελευθέριος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: κοινωφελής εργασία
μετατροπή ποινής
Ποινικό δίκαιο
Community service
Conversion of penalty
Criminal law

description: Έρεισμα της μελέτης αποτέλεσαν τα γενικότερα δογματικά ζητήματα που σχετίζονται με την μετατροπή της στερητικής της ελευθερίας ποινής σε χρηματική και περαιτέρω σε παροχή κοινωφελούς εργασίας, η στάση της δικαστηριακής πρακτικής απέναντι σε αυτό το κομβικό σημείο της ποινικής δίκης καθώς και η πρόσφατη αντικατάσταση του άρθρου 82 ΠΚ, με το άρθρο 1 του ν.3904/2010. Η παρούσα εργασία διαπραγματεύεται την νομική φύση του θεσμού της παροχής κοινωφελούς εργασίας, παρουσιάζει την ισχύουσα μορφή της διάταξης του άρθρου 82 ΠΚ και μέσα από μια σύγκριση με το προγενέστερο νομοθετικό καθεστώς οδηγείται σε συμπεράσματα, διατυπώνοντας ταυτόχρονα ερωτήματα και υπογραμμίζοντας κενά του ισχύοντος νομοθετικού πλαισίου. Επίσης επιχειρείται μια σύντομη αναφορά στον θεσμό της κοινωφελούς εργασίας στο δίκαιο ανηλίκων και τον Σωφρονιστικό Κώδικα, προκειμένου να τονιστεί η ανύπαρκτη εφαρμογή του μέτρου στις εν λόγω σχετικές διατάξεις. Τέλος το παρών έργο καταλήγει σε μια «ευχή» για δικαιοκρατικά ασφαλέστερη εφαρμογή του θεσμού αλλά και στην ώθηση για συχνότερη επιλογή έκτισης μιας βραχύχρονης περιοριστικής της ελευθερίας ποινής με τον τρόπο της παροχής κοινωφελούς έργου, ως δείγμα φιλελεύθερου ποινικού δικαίου αλλά και ως απόρροια της γενικότερης κοινωνικοοικονομικής αλλά και πολιτικής κατάστασης της χώρας.
description: This study is based on the general doctrinal issues related to the conversion of custodial sentence into pecuniary penalty and thereafter into community service, as well as the judicial practice at this crucial point of criminal proceedings and the recent replacement of Article 82 of the Criminal Code by Article 1 of law 3904/2010. Thus, this study addresses itself to the legal nature of community service orders, presents the current version of Article 82 of the Criminal Code and by comparing it with the previous legislative regime it draws conclusions while raising questions and highlighting the gaps in the existing legislative framework. Furthermore, it gives a brief overview of community service orders in juvenile law and the Correctional Code, in order to emphasize the non-implementation of the measure vis-à-vis the said provisions. Finally, this study concludes with a “wish” for a more proper implementation of community service orders while promoting community service work in preference to short-term custodial sentences, as an indication of a liberal criminal law but also emerging from the overall socio-economic and political situation in the country.
Divulgação Científica: Eventos Presenciais e Perspectivas dos Divulgadores
Creators: name: Vinhas, Lilian
name: Paula, Maria Angela Boccara De
Publisher: name: figshare
Year: 2021
Subjects: subject: 200101 Communication Studies
subject: FOS: Media and communications

description: Como uma Instituição Científica, Tecnológica e de Inovação (ICT) e seu corpo técnico contribuem para a divulgação da ciência, no que diz respeito a eventos e atividades presenciais? Com essa questão norteadora, buscou-se conhecer e descrever as características dos eventos realizados por uma Unidade de Pesquisa (UP) do Ministério da Ciência, Tecnologia e Inovações (MCTI) que atua nas áreas espacial e ambiental. Para tanto, conduziu-se um estudo de caso de caráter exploratório-descritivo, com abordagem qualitativa. Na primeira etapa foram levantados, por meio de pesquisa documental, eventos e atividades presenciais realizadas no período 2015-2019. Os eventos foram classificados por tipo, ano de realização, área de conhecimento, temática, local de realização, público-alvo e quantidade de pessoas alcançadas. Na segunda etapa, foram realizadas entrevistas semiestruturadas com um divulgador de cada tipo de evento, a fim de conhecer suas percepções e motivações. Por meio de análise de conteúdo foram identificados os seguintes eixos temáticos: (1) Caracterização dos divulgadores e das práticas; (2) Objetivos, motivações e vivências prévias dos divulgadores; (3) Desafios e oportunidades; (4) Público: alcance e perfil; (5) Linguagem e comunicação e (6) Afetividade.
Στοχαστικές διαφορικές εξισώσεις με εφαρμογές σε δυναμικά συστήματα:
Creators: name: Σταυρόπουλος, Αθανάσιος Φωτίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Στοχαστικές
Διαφορικές
Δυναμικά
Stochastic
Differential
Dynamical

description: Στην παρούσα διπλωματική εργασία μελετήσαμε τα βασικά χαρακτηριστικά της τυπικής διαδικασίας Wiener (Κίνηση Brown) και στη συνέχεια, με βάση αυτά τα χαρακτηριστικά, τροποποιήσαμε τις μεθόδους επίλυσης διαφορικών εξισώσεων Runge-Kutta τέταρτης τάξης και Runge-Kutta-Fehlberg κατά τέτοιο τρόπο ώστε να χρησιμοποιηθούν για την μελέτη στοχαστικά διαταραγμένων δυναμικών συστημάτων (δυναμικά συστήματα τα οποία διαταράσσονται από αλληλεπιδράσεις που, λόγω της πολυπλοκότητάς τους και του φαινομενικά στατιστικού χαρακτήρα τους, μπορούν να θεωρηθούν ως στοχαστικές). Χρησιμοποιώντας τις μεθόδους αυτές μελετήθηκαν μερικά από τα βασικά ποιοτικά χαρακτηριστικά των εξής δυναμικών συστημάτων: α) Τον στοχαστικά διαταραγμένο αρμονικό ταλαντωτή β) Ένα στοχαστικά διαταραγμένο σύστημα όμοιων σωματιδίων που κινούνται σε ένα ημιτονοειδές δυναμικό πεδίο (μονοδιάστατη και δισδιάστατη περίπτωση). γ) Ένα στοχαστικά διαταραγμένο σύστημα συζευγμένων ταλαντωτών (γραμμική και μη γραμμική περίπτωση). Όλες οι παραπάνω μελέτες γίνονται με τη χρήση κατάλληλων προγραμμάτων που δημιουργήθηκαν με τη γλώσσα προγραμματισμού C++ και του αλγεβρικού υπολογιστικού προγράμματος MATLAB.
description: We studied the basic characteristics of a Standard Wiener Process (Standard Brownian Motion) and then, depending on these characteristics, we modified the fourth order Runge-Kutta and Runge-Kutta-Fehlberg methods in such a way so to use them for the numerical study of stochastically perturbed dynamical systems (dynamical systems that are perturbed by interactions which, due to their complexity and seemingly statistical nature, can be considered as stochastic). Using these methods we studied some of the basic qualitative characteristics of the following dynamical systems a) The Stochastically Perturbed Harmonic Oscillator b) A Stochastically Perturbed System of identical particles moving in a sinusoidal potential field (one-dimensional and two-dimensional case). c) A Stochastically Perturbed System of coupled oscillators (linear and non-linear case). All the above studies were accomplished by using appropriate computer programs created with the C++ programming language and MATLAB algebra computing system.
Social media and community building in competitive women’s road cycling
Creators: name: Ryder, Suzanne
name: McLachlan, Fiona
name: McDonald, Brent
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2022

description: Social media has become a central part of the modern-day broadcasting of women’s sports, and it is argued to be of great importance to the development of women’s sports (Vann, 2014; Thorpe, Toffoletti & Bruce, 2017). However, the relationship between digital and social media and the development of women’s sports is complex (Sherwood, 2020). In this paper, we explore social media narratives in competitive women’s road cycling. Digital and social media are a central communication center in cycling, and self-tracking technologies and associated media are imperative to cyclists’ socializing and cycling practices and identities (Duggan, 2020; Lamont & Ross, 2019). Few studies have focused on social media and its narratives in a competitive road cycling field. The paper considers an autoethnographic account of the first author in the local bike racing scene of Melbourne, Australia. The paper reflects on the role of social media in gaining access to road cycling, bypassing structural and social barriers, and community building in the field of women’s racing. 
description: Eracle. Journal of Sport and Social Sciences, Vol 5 No 1 (2022): Media, Society and Cycling Cultures
Wringing out DNA
Creators: name: Lionnet, Timothee
name: Joubaud, Sylvain
name: Lavery, Richard
name: Bensimon, David
name: Croquette, Vincent
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The chiral nature of DNA plays a crucial role in cellular processes. Here we use magnetic tweezers to explore one of the signatures of this chirality, the coupling between stretch and twist deformations. We show that the extension of a stretched DNA molecule increases linearly by 0.42 nm per excess turn applied to the double helix. This result contradicts the intuition that DNA should lengthen as it is unwound and get shorter with overwinding. We then present numerical results of energy minimizations of torsionally restrained DNA that display a behaviour similar to the experimental data and shed light on the molecular details of this surprising effect.
description: 4 pages revtex4, 4 figures
Critical dynamics of non-conserved strongly anisotropic permutation symmetric three-vector model
Creators: name: Pereira, Rajiv G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explore, employing the renormalization-group theory, the critical scaling behavior of the permutation symmetric three-vector model that obeys non-conserving dynamics and has a relevant anisotropic perturbation which drives the system into a non-equilibrium steady state. We explicitly find the independent critical exponents with corrections up to two loops. They include the static exponents $ν$ and $η$, the off equilibrium exponent $\widetildeη$, the dynamic exponent $z$ and the strong anisotropy exponent $Δ$. We also express the other anisotropy exponents in terms of these.
Towards linked data internationalization: the succesfull case of the Greek DBpedia
Creators: name: Κοντοκώστας, Δημήτριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Διασυνδεδεμένα Δεδομένα
Διεθνοποίηση
Πολυγλωσσική υποστήριξη
Linked Data
Internationalization
DBpedia

description: Η εργασία αυτή περιγράφει την ανάπτυξη της ελληνικής DΒpedia και την συνεισφορά στο Πλαίσιο Εξόρυξης Γνώσης (Information Extraction Framework) της DBpedia από πολυγλωσσικές εκδόσεις της Wikipedia. Η συνεισφορά έγινε κυρίως σε θέματα διεθνοποίησης (I18n) και πολυγλωσσικής υποστήριξης και είχε τις ακόλουθες κατευθύνσεις: 1) τη δημιουργία επαναχρησιμοποιήσιμων στοιχείων (Φίλτρα I18n) για την εξόρυξη γνώσης από μη αγγλικές εκδόσεις της Wikipedia, 2) την δημιουργία 2 καινούργιων στοιχείων εξόρυξης (extractors) που συνεισφέρουν και στην αγγλική έκδοση της DBpedia, 3) την υποστήριξη εξαγωγής σε πρότυπο IRI (Internationalized Resource Identifier) και 4) την προτυποποίηση των κανόνων TCN (Transparent Content Negotiation) για δημοσίευση διασυνδεδεμένων δεδομένων σε πρότυπο IRI. Ο στόχος αυτής της εργασίας είναι να δημιουργήσει “σωστές πρακτικές” συνοδευόμενες από λογισμικό ώστε να επιτρέψει στην κοινότητα της DBpedia να δημιουργήσει, να συντηρήσει και να διασυνδέσει πολυγλωσσικές εκδόσεις της DBpedia. Επιπρόσθετα οι ίδιες πρακτικές μπορούν να εφαρμοστούν γενικότερα στη δημοσίευση διασυνδεδεμένων δεδομένων σε μη λατινικές γλώσσες.
description: The deployment of Greek DBpedia and the contribution to the DBpedia Information Extraction Framework with regard to internationalization (I18n) and multilingual support are presented. I18n filters are proposed as pluggable components in order to address issues when extracting knowledge from non-EnglishWikipedia editions. We report about our strategy to support International Resource Identifier (IRI) and introduce two new extractors and the I18n Filters. Moreover, we discuss the definition of Transparent Content Negotiation (TCN) rules for IRIs to address de-referencing and IRI serialization problems. The aim of this research is to establish best practices (complemented by software) to allow the DBpedia community to easily generate, maintain and properly interlink language-specific DBpedia editions. Furthermore, these best practices can be applied for the publication of Linked Data in any non-Latin language without restriction.
Per una decostruzione (e ricostruzione) del coaching sportivo
Creators: name: Pedrini, Lorenzo
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2022

description: The aim of this paper is to locate coaching within the field of sport and physical activity scholarship. In this regard, the volume Studies in Sports Coaching authored by Robyn L. Jones, sketches out a critical sport coaching paradigm. Drawing on this perspective, (micro)sociological studies on coaching allow to address a wide range of pedagogic, political, and symbolic processes. It is argued that analyzing situated interactions and language in use provides a powerful means for deconstructing the taken-for-granted aspects of the daily coaching endeavor. This focus can also sustain an effort to break down the communication gap between the scholars and the coaches, conjoining the communities on action-research initiatives primarily concerned in reconstructing the sporting cultures.  
description: Eracle. Journal of Sport and Social Sciences, Vol 5 No 1 (2022): Media, Society and Cycling Cultures
Ultrafast X-ray induced damage and nonthermal melting in cadmium sulfide
Creators: name: Medvedev, Nikita
name: Peña, Aldo Artímez
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Cadmium sulfide is a valuable material for solar cells, photovoltaic, and radiation detectors. It is thus important to evaluate the material damage mechanisms and damage threshold in response to irradiation. Here, we simulate the ultrafast XUV/X-ray irradiation of CdS with the combined model, XTANT-3. It accounts for nonequilibrium electronic and atomic dynamics, nonadiabatic coupling between the two systems, nonthermal melting and bond breaking due to electronic excitation. We find that the two phases of CdS, zinc blende and wurtzite, demonstrate very close damage threshold dose of ~0.4-0.5 eV/atom. The damage is mainly thermal, whereas with increase of the dose, nonthermal effects begin to dominate leading to nonthermal melting. The transient disordered state is a high-density liquid, which may be semiconducting or metallic depending on the dose. Later recrystallization may recover the material back to the crystalline phase, or at high doses create an amorphous phase with variable bandgap. The revealed effects may potentially allow for controllable tuning of the band gap via laser irradiation of CdS.
Ἐπεκτάσεις Ὁμάδων (καὶ Συνομολογία):
Creators: name: Γκέκας, Στέφανος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Σταυρομορφισμός
Περίθραυσις
Επιφραγή
Crossed homomorphism (or derivation)
Factoring (or factor set)
Obstruction

description: Η περίληψη της εργασίας στα ελληνικά και στα αγγλικά βρίσκεται σε επισυναπτόμενο αρχείο.
Komoot. Dati, socievolezza e auto-tracciamento
Creators: name: Benvenga, Luca
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2022

description: Sports and physical activity apps play a fundamental role in the lives of hundreds of thousands of individuals. This leads us to consider contemporary sociality as a system of global interrelationships and networks, with the individual constantly connected to others through PCs and mobile devices. The article, starting with a digital ethnography of the Komoot app (used in cycling) aims to illustrate how this software produces ambivalence. An exaltation of the socialisation of our experiences and a healthy lifestyle is sometimes echoed by certain customisation and/or self-monitoring practices that influence our behaviour through calculation, competition and performance. The aim of this paper is to show how a playful dimension of our routine activities, linked to a process of quantifying the self is tangible; aspects, both of which are central to the establishment of the neoliberal ethos.
description: Eracle. Journal of Sport and Social Sciences, Vol 5 No 1 (2022): Media, Society and Cycling Cultures
Θεωρητική μελέτη στο επίπεδο DFT σε διάλυμα τολουολίου του ενεργειακού προφίλ της αντίδρασης του Ν-ακετυλο-1,2-δισ (τριφλουορομεθανοσουλφοναμίδιου) με την S-1-φαινυλαιθυλαμίνη:
Creators: name: Γούλα, Χριστίνα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Θεωρία συναρτησιακών της πυκνότητας (DFT)
Εναντιοεπιλεκτικότητα
Ενεργειακό προφίλ της αντίδρασης
Density functional theory (DFT)
Enantioselectivity
Reaction profile

description: Σκοπός της διατριβής ήταν η θεωρητική μελέτη, με βάση τη θεωρία συναρτησιακών της πυκνότητας (DFT) σε διάλυμα τολουολίου, του ενεργειακού προφίλ της αντίδρασης του Ν-ακετυλο-1,2-δισ(τριφλουορομεθανοσουλφοναμίδιο) με την S-1-φαινυλαιθυλαμίνη. Η μελέτη αυτή, μπορεί να βοηθήσει καθοριστικά στην ερμηνεία της εναντιοεπιλεκτικότητας που παρατηρείται σ’ αυτές τις ενώσεις, που ανήκουν στα φυσικά προϊόντα. Στη συνέχεια, με τη βοήθεια κατάλληλων συναρτησιακών της DFT, βρήκαμε τις δομές που αποτελούν το ενεργειακό προφίλ της αντίδρασης και ασχοληθήκαμε εκτενέστερα με τα δομικά χαρακτηριστικά και το ενεργειακό προφίλ της αντίδρασης. Τα συμπεράσματα της μελέτης μας επαληθεύουν α) τα διαθέσιμα πειραματικά των ίδιων ενώσεων, β) δικαιολογούν την αδυναμία αντίδρασης των δύο ενώσεων σε θερμοκρασία δωματίου και γ) διορθώνουν τις προταθείσες προβλέψεις για τη φύση και το είδος των μεταβατικών καταστάσεων της επιφάνειας δυναμικής ενέργειας της αντίδρασης.
description: The aim of the present thesis was the theoretical study of the reaction profile of N-acetyl-1,2-bis(trifluoromethanesulfamide) with S-1-phenylethylamine, based on density functional theory (DFT), in toluene solution. This study, may help decisively the interpretation of enantioselectivity observed in these compounds, belonging to the natural products. Furthermore, through the appropriate functionals of DFT, we determined the structures involved in the reaction profile and worked extensively with the structural characteristics and the reaction profile. The conclusions of our study a) verify the available experimental data, b) justify the inability of both compounds to react at room temperature and c) correct suggested predictions concerning the nature and type of the transition states on the potential energy surface of the reaction.
Microstructure-based modeling of elastic functionally graded materials: One dimensional case
Creators: name: Sharif-Khodaei, Zahra
name: Zeman, Jan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Functionally graded materials (FGMs) are two-phase composites with continuously changing microstructure adapted to performance requirements. Traditionally, the overall behavior of FGMs has been determined using local averaging techniques or a given smooth variation of material properties. Although these models are computationally efficient, their validity and accuracy remain questionable, since a link with the underlying microstructure (including its randomness) is not clear. In this paper, we propose a modeling strategy for the linear elastic analysis of FGMs systematically based on a realistic microstructural model. The overall response of FGMs is addressed in the framework of stochastic Hashin-Shtrikman variational principles. To allow for the analysis of finite bodies, recently introduced discretization schemes based on the Finite Element Method and the Boundary Element Method are employed to obtain statistics of local fields. Representative numerical examples are presented to compare the performance and accuracy of both schemes. To gain insight into similarities and differences between these methods and to minimize technicalities, the analysis is performed in the one-dimensional setting.
description: 33 pages, 14 figures
Politica, economia e questioni sociali nel calcio contemporaneo
Creators: name: Ferrari, Giovannipaolo
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2022

description: In Political Football. Regulation, Globalisation and the Market, Wyn Grant examines the political economy of football and its difficult relationship with the market.
description: Eracle. Journal of Sport and Social Sciences, Vol 5 No 1 (2022): Media, Society and Cycling Cultures
Mediatization and Platformization of Cycling Cultures: Actors, Practices, Processes
Creators: name: Tirino, Mario
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2022

description: This introduction aims to describe the main issues of mediatization and platformization of cycling cultures in contemporary society. Starting with the concept of cycling culture, as opposed to the car-centric paradigm, the goal is to show the set of social actors, sociocultural processes, and cultural practices that structure the media-cycling field.
description: Eracle. Journal of Sport and Social Sciences, Vol 5 No 1 (2022): Media, Society and Cycling Cultures
Four decades of advances from MSDP to S4I and SLED imaging spectrometers
Creators: name: Mein, P.
name: Malherbe, J. -M.
name: Sayede, F.
name: Rudawy, P.
name: Phillips, K. J. H.
name: Keenan, F. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Multichannel Subtractive Double Pass (MSDP) is an imaging spectroscopy technique, which allows observations of spectral line profiles over a 2D field of view with high spatial and temporal resolution. It has been intensively used since 1977 on various spectrographs (Meudon, Pic du Midi, the German Vacuum Tower Telescope, THEMIS, Wrocław). We summarize previous developments and describe the capabilities of a new design that has been developed at Meudon and that has higher spectral resolution and increased channel number: Spectral Sampling with Slicer for Solar Instrumentation (S4I), which can be combined with a new and fast polarimetry analysis. This new generation MSDP technique is well adapted to large telescopes. Also presented are the goals of a derived compact version of the instrument, the Solar Line Emission Dopplerometer (SLED), dedicated to dynamic studies of coronal loops observed in the forbidden iron lines, and prominences. It is designed for observing total solar eclipses, and for deployment on the Wrocław and Lomnicky peak coronagraphs respectively for prominence and coronal observations.
description: to be published in "Solar Physics" (Springer)