cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ο Εθνικός Δικαστής και η πραγματική προστασία των δικαιωμάτων που εγγυάται το Δίκαιο της Ευρωπαϊκής Ένωσης
Creators: name: Δήμος, Λάμπρος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Δικαστική Προστασία
Εθνικός Δικαστής
Ενωσιακά Δικαιώματα
Judicial Protection
National Judge
EU Rights

description: Αντικείμενο της διπλωματικής εργασίας αποτελεί η ανάλυση του Άρθρου 19 της Συνθήκης για την Ευρωπαϊκή Ένωση σχετικά με την αποτελεσματική προστασία των δικαιωμάτων που εγγυάται το Δίκαιο της Ευρωπαϊκής Ένωσης ενώπιον των εθνικών δικαστηρίων των Κρατών Μελών. Σκοπός της εργασίας είναι να εξετάσει και να ερμηνεύσει τις αποφάσεις του Δικαστηρίου της Ευρωπαϊκής Ένωσης μέσω των οποίων αναπτύχθηκε η αρχή της αποτελεσματικής προστασίας των δικαιωμάτων που εγγυάται το Δίκαιο της Ευρωπαϊκής Ένωσης μέχρι την καθιέρωσή της στο Άρθρο 19 ΣΕΕ. Αρχικά εξετάζονται οι πρώτες αποφάσεις του ΔΕΕ μέσω των οποίων το Δικαστήριο καθιέρωσε την αρχή της δικονομικής αυτονομίας των Κρατών Μελών. Στη συνέχεια αναλύεται το επόμενο στάδιο των αποφάσεων του ΔΕΕ, κατά το οποίο το Δικαστήριο ανέπτυξε πιο επεμβατική στάση ως προς τα εθνικά δικονομικά συστήματα. Τέλος, γίνεται αναφορά στις αποφάσεις του Δικαστηρίου οι οποίες εξισορρόπησαν τις δύο προηγούμενες προσεγγίσεις. Επιπλέον, αναλύεται η στάση του Δικαστηρίου απέναντι στις πρόσφατες τάσεις έλλειψης ανεξαρτησίας της Δικαιοσύνης που κάνουν αισθητή την παρουσία τους σε ορισμένα Κράτη Μέλη
description: The subject of the thesis is the analysis of Article 19 of the Treaty on the European Union about the effective protection of rights conferred by European Union Law before national courts of the Member States. The purpose of the thesis is to examine and interpret the rulings of the Court of Justice of the European Union that developed the principle of effective judicial protection of rights conferred by European Union Law until the establishment of this principle by Article 19 TEU. Primarily the first rulings of the ECJ that established the principle of national procedural autonomy are examined. An analysis of the next phase of the Court’s jurisprudence follows, during which the ECJ developed a more intrusive stance towards national procedural laws. On a final note, the Court’s rulings that stroke a balance between the two previous phases are analysed. Furthermore, there follows an analysis of the Court’s stance towards recent tensions of judiciary independence deficits in certain Member States
Post-processed shadow determination for composition of depth images
Creators: name: Krywolt, Russell W.
Publisher: name: University of British Columbia
Year: 2008

description: In the creation of computer generated pictures, many methods have been proposed to reduce the amount of time it takes to render an image or sequence of images. Efforts have been made to improve existing rendering algorithms and to create better ones, but the compositing method has received little attention. The compositing method breaks a scene up into parts which can be rendered separately which are then put together in such away that the result is nearly indistinguishable from an image rendered from the complete scene. This can not only reduce the total time taken to generate an image sequence, but can also create composite images from others rendered by different methods. In 1984, Porter and Duff first introduced a well defined approach to computer image composition, and in 1985, Duff proposed an extension to the this method that employed depth images. Using depth images, visibility determination can be done by the computer, reducing the human effort required to produce the resultant image. The images produced are likely to be missing some elements that would be present if all objects were rendered in a single scene, such as shadows from objects in one image not being cast on objects from other images. This thesis addresses the problem of modifying composited images such that the resultant picture contains shadows that would normally only be present in an image rendered from a scene containing all objects in both original pictures. A simple algorithm is developed to reconstruct the visible surface of objects in an image. The reconstruction is used to generate a shadow map for each image to be composited. The shadow map indicates where shadows would fall on one image were objects in the other image present when the original scene was rendered. The shadow map is then used to create shadows in appropriate places on the original images, and these reshadowed images are composite to obtain the desired result. The application of these techniques to other areas is also investigated.
Dynamics of a Fermi gas quenched to unitarity
Creators: name: Dyke, P.
name: Hogan, A.
name: Herrera, I.
name: Kuhn, C. C. N.
name: Hoinka, S.
name: Vale, C. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present an experimental study of a two component Fermi gas following an interaction quench into the superfluid phase. Starting with a weakly attractive gas in the normal phase, interactions are ramped to unitarity at a range of rates and we measure the subsequent dynamics as the gas approaches equilibrium. Both the formation and condensation of fermion pairs are mapped via measurements of the pair momentum distribution and can take place on very different timescales, depending on the adiabaticity of the quench. The contact parameter is seen to respond very quickly to changes in the interaction strength, indicating that short-range correlations, based on the occupation of high-momentum modes, evolve far more rapidly than the correlations in low-momentum modes necessary for pair condensation.
description: 6 pages, 3 figures
Triiodothyronine suppresses humoral immunity but not T-cell-mediated immune response in incubating female eiders (Somateria mollissima)
Creators: name: Bourgeon, S.
name: Raclot, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Immunity is believed to share limited resources with other physiological functions and this may partly account for the fitness costs of reproduction. Previous studies have shown that the acquired immunity of female common eiders (Somateria mollissima) is suppressed during the incubation fast. To save energy, triiodothyronine (T3) is adaptively decreased during fasting in most bird species, despite T3 levels are maintained throughout incubation in female eiders. However, the relationship between thyroid hormones and the immune system is not fully understood. The current study aimed to determine the endocrine mechanisms that underlie immunosuppression in incubating female eiders. ...
Measuring Violations of Positive Involvement in Voting
Creators: name: Holliday, Wesley H.
name: Pacuit, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Multiagent Systems (cs.MA)
subject: Theoretical Economics (econ.TH)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business
subject: I.2.11

description: In the context of computational social choice, we study voting methods that assign a set of winners to each profile of voter preferences. A voting method satisfies the property of positive involvement (PI) if for any election in which a candidate x would be among the winners, adding another voter to the election who ranks x first does not cause x to lose. Surprisingly, a number of standard voting methods violate this natural property. In this paper, we investigate different ways of measuring the extent to which a voting method violates PI, using computer simulations. We consider the probability (under different probability models for preferences) of PI violations in randomly drawn profiles vs. profile-coalition pairs (involving coalitions of different sizes). We argue that in order to choose between a voting method that satisfies PI and one that does not, we should consider the probability of PI violation conditional on the voting methods choosing different winners. We should also relativize the probability of PI violation to what we call voter potency, the probability that a voter causes a candidate to lose. Although absolute frequencies of PI violations may be low, after this conditioning and relativization, we see that under certain voting methods that violate PI, much of a voter's potency is turned against them - in particular, against their desire to see their favorite candidate elected.
description: In Proceedings TARK 2021, arXiv:2106.10886
A multi-instrumental approach to the study of equatorial ionosphere over South America
Creators: name: Cesaroni, Claudio <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: GEO/10 Geofisica della terra solida

description: An extensive study of the morphology and the dynamics of the equatorial ionosphere over South America is presented here. A multi parametric approach is used to describe the physical characteristics of the ionosphere in the regions where the combination of the thermospheric electric field and the horizontal geomagnetic field creates the so-called Equatorial Ionization Anomalies. Ground based measurements from GNSS receivers are used to link the Total Electron Content (TEC), its spatial gradients and the phenomenon known as scintillation that can lead to a GNSS signal degradation or even to a GNSS signal ‘loss of lock’. A new algorithm to highlight the features characterizing the TEC distribution is developed in the framework of this thesis and the results obtained are validated and used to improve the performance of a GNSS positioning technique (long baseline RTK). In addition, the correlation between scintillation and dynamics of the ionospheric irregularities is investigated. By means of a software, here implemented, the velocity of the ionospheric irregularities is evaluated using high sampling rate GNSS measurements. The results highlight the parallel behaviour of the amplitude scintillation index (S4) occurrence and the zonal velocity of the ionospheric irregularities at least during severe scintillations conditions (post-sunset hours). This suggests that scintillations are driven by TEC gradients as well as by the dynamics of the ionospheric plasma. Finally, given the importance of such studies for technological applications (e.g. GNSS high-precision applications), a validation of the NeQuick model (i.e. the model used in the new GALILEO satellites for TEC modelling) is performed. The NeQuick performance dramatically improves when data from HF radar sounding (ionograms) are ingested. A custom designed algorithm, based on the image recognition technique, is developed to properly select the ingested data, leading to further improvement of the NeQuick performance.
Uniform approximation of sgn(x) by polynomials and entire functions
Creators: name: Eremenko, Alexandre
name: Yuditskii, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 41A10,41A25,30C20

description: We study the best uniform approximation by polynomials of fixed degree of the function sgn(x) on the union of two intervals symmetric with respect to the origin. We obtain precise asymptotics, with explicit constants, for the error of the best approximation as the degrees tend to infinity. Our approach is based on a new representation of the extremal polynomials in terms of certain conformal maps. We also study the best polynomial approximation of sgn(x) on [-1,1] with respect to the Hausdorff distance between the completed graphs.
description: 15 pages, 2 figures
The EDGE-CALIFA survey: The local and global relations between $Σ_\ast$ , $Σ_{SFR}$ and $Σ_{mol}$ that regulate star-formation
Creators: name: Sánchez, S. F.
name: Barrera-Ballesteros, J. K.
name: Colombo, D.
name: Wong, T.
name: Bolatto, A.
name: Rosolowsky, E.
name: Vogel, S.
name: Levy, R.
name: Kalinova, V.
name: Alvarez-Hurtado, P.
name: Luo, Y.
name: Cao, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new characterization of the relations between star-formation rate, stellar mass and molecular gas mass surface densities at different spatial scales across galaxies (from galaxy wide to kpc-scales). To do so we make use of the largest sample combining spatially-resolved spectroscopic information with CO observations, provided by the EDGE-CALIFA survey, together with new single dish CO observations obtained by APEX. We show that those relations are the same at the different explored scales, sharing the same distributions for the explored data, with similar slope, intercept and scatter (when characterized by a simple power-law). From this analysis, we propose that these relations are the projection of a single relation between the three properties that follows a distribution well described by a line in the three-dimension parameter space. Finally, we show that observed secondary relations between the residuals and the considered parameters are fully explained by the correlation between the uncertainties, and therefore have no physical origin. We discuss these results in the context of the hypothesis of self-regulation of the star-formation process.
description: 21 pages,7 figures, accepted to be published in the MNRAS
A combinatorial statistic for labeled threshold graphs
Creators: name: Deshpande, Priyavrat
name: Menon, Krishna
name: Singh, Anurag
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C35, 05C30, 11B73

description: Consider the collection of hyperplanes in $\mathbb{R}^n$ whose defining equations are given by $\{x_i + x_j = 0\mid 1\leq i
description: Minor changes, final version
Το βιντεοπαιχνίδι στη μουσειακή εκπαίδευση
Creators: name: Κυριακίδου, Λουκία Θρασύβουλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Βιντεοπαιχνίδια
Μουσειολογία
Παιδαγωγική
Videogames
Museology
Pedagogy

description: Το αντικείμενο το οποίο πραγματεύεται η παρούσα διπλωματική εργασία έχει να κάνει με τον εκπαιδευτικό ρόλο των βιντεοπαιχνιδιών. Το πρώτο μέρος της διπλωματικής εργασίας αναφέρεται στην εκπαίδευση και στους τρόπους με τους οποίους επιτυγχάνεται η ανθρώπινη μόρφωση. Στη πορεία παρατίθενται και αναλύονται θεωρίες σχετικές με τη προαγωγή της γνώσης μέσω των νέων τεχνολογιών, και πιο συγκεκριμένα των βιντεοπαιχνιδιών. Ακολουθεί σύνδεση των μουσείων, ως ιδρυμάτων τα οποία στοχεύουν στη προαγωγή της γνώσης, με τα βιντεοπαιχνίδια, ως νέα μέσα προαγωγής της γνώσης. Το δεύτερο μέρος της διπλωματικής εργασίας αφορά στη πρόταση συγκεκριμένου εκπαιδευτικού βιντεοπαιχνιδιού, η οποία απευθύνεται στο Κέντρο Διάδοσης Επιστημών και Μουσείο Τεχνολογίας ΝΟΗΣΙΣ. Η πρόταση του εκπαιδευτικού βιντεοπαιχνιδιού βασίζεται στη μόνιμη έκθεση του μουσείου, με τίτλο “Αρχαία Ελληνική Τεχνολογία” και σκοπό έχει να λειτουργήσει ενισχυτικά, και σε σύμπνοια με την υπάρχουσα εκπαιδευτική πολιτική του μουσείου-πολιτιστικού οργανισμού
description: The subject of the present thesis is the study of the educational role of videogames. In the first section we discussed the way human learning is achieved. Furthermore, we analyzed theories in regards to the way new technologies and especially videogames could promote learning process. Then, we suggest museums, which are institutions that aim to providing knowledge to their visitors, could make use of new technologies, especially videogames, in order to advance their educational tools to achieving a more valuable learning process for their visitors. In the second section of the present thesis we propose an educational videogame draft, which is addressed to the Thessaloniki Science Center and Technology Museum NOESIS. The educational videogame draft is created specifically based on the museum’s permanent exhibition “Ancient Greek Technology”, and its aim is to be a complementary educational tool to the already existing educational policy
description: Σε συνεργασία με το Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Bottleneck-induced transitions in a minimal model for intracellular transport
Creators: name: Pierobon, P.
name: Mobilia, M.
name: Kouyos, R.
name: Frey, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We consider the influence of disorder on the non-equilibrium steady state of a minimal model for intracellular transport. In this model particles move unidirectionally according to the \emph{totally asymmetric exclusion process} (TASEP) and are coupled to a bulk reservoir by \emph{Langmuir kinetics}. Our discussion focuses on localized point defects acting as a bottleneck for the particle transport. Combining analytic methods and numerical simulations, we identify a rich phase behavior as a function of the defect strength. Our analytical approach relies on an effective mean-field theory obtained by splitting the lattice into two subsystems, which are effectively connected exploiting the local current conservation. Introducing the key concept of a carrying capacity, the maximal current which can flow through the bulk of the system (including the defect), we discriminate between the cases where the defect is irrelevant and those where it acts as a bottleneck and induces various novel phases (called {\it bottleneck phases}). Contrary to the simple TASEP in the presence of inhomogeneities, many scenarios emerge and translate into rich underlying phase-diagrams, the topological properties of which are discussed.
description: 14 pages, 15 figures, 1 table
Ανθρωπολογική τεκμηρίωση του τρυπανισμού στην αρχαιότητα. Οι περιπτώσεις από την Ιερισσό Χαλκιδικής και τα Μάταλα Κρήτης
Creators: name: Αηδόνης, Αστέριος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Βιολογική Ανθρωπολογία
Τρυπανισμός
Άκανθος
Biological Anthropology
Trepanation
Akanthos

description: Ο τρυπανισμός είναι η αρχαιότερη χειρουργική επέμβαση που εντοπίστηκε σε αρχαιολογικό σκελετικό υλικό. Η εφαρμογή του εκτείνεται σε όλο τον κόσμο. Τα αρχαιότερα ευρήματα χρονολογούνται στη Μεσολιθική Εποχή. Τα παλαιότερα τεκμηριωμένα κρανία με τρυπανισμό στην Ελλάδα, προέρχονται από τη Μεσομινωική περίοδο, γύρω στο 2000 π.Χ. Παρά τη λεπτομερή περιγραφή της επέμβασης στην Ιπποκρατική Συλλογή, η εφαρμογή της στην Ελλάδα των κλασικών χρόνων δεν είχε επιβεβαιωθεί από ανάλογα σκελετικά ευρήματα. Στην παρούσα εργασία, παρουσιάζονται οι τρυπανισμοί που εντοπίστηκαν σε τέσσερα κρανία της Κλασικής-Ελληνιστικής περιόδου από τη νεκρόπολη της αρχαίας Ακάνθου στην Χαλκιδική, και ένα κρανίο Ρωμαϊκής εποχής από τα Μάταλα της Κρήτης. Σκοπός της μελέτης ήταν να αναλυθούν οι τεχνικές που χρησιμοποιήθηκαν και τα κίνητρα πίσω από την επέμβαση. Χρησιμοποιήσαμε μακρο- και στερεοσκοπικές παρατηρήσεις καθώς και CT σάρωση για να διερευνήσουμε πιθανά ίχνη χειρουργικών εργαλείων, παθολογικές αλλοιώσεις που σχετίζονται με την επέμβαση καθώς και τον βαθμό ίασης. Έγινε επίσης ανασκόπηση σε δημοσιευμένες περιπτώσεις τρυπανισμού από την Ελλάδα, με σκοπό την κατανόηση άλλων πτυχών της επέμβασης σχετικών με τις δημογραφικές της παραμέτρους και τα ποσοστά επιβίωσης
description: Trepanation or trephination, is the oldest surgical operation identified in archaeological context. It is well documented all over the world and its antiquity dates back to the Mesolithic. The oldest trephined skulls in Greece, are dated to the Middle Minoan period, about 2000 BC. Despite the detailed textual description of the operation in the Hippocratic Corpus, until now, there weren’t skeletal findings to confirm its implementation in classical times in Greece. We report cases of trepanation discovered in four skulls from the Classical-Hellenistic period, excavated at the necropolis of ancient Akanthos, North Greece and one skull from Matala, Crete, dated to the Roman period. The aim of the study was to analyze the techniques used and the motives behind the operation. We used macro- and stereoscopic observations as well as CT scanning to investigate traces of surgical tools, associated pathology and healing. We also reviewed the already published cases from Greece in order to understand other aspects of the operation, regarding demographic parameters and survival rates
description: Σε συνεργασία με το τμήμα Ιστορίας και Εθνολογίας (Δημοκρίτειο Πανεπιστήμιο Θράκης)
Entrectinib: A Review in NTRK+ Solid Tumours and ROS1+ NSCLC
Creators: name: Frampton, James E.
Publisher: name: Adis Journals
Year: 2022
Subjects: Medicine

description: The Entrectinib in NTRK+ Solid Tumours and ROS1+ NSCLC Adis Drug Evaluation video abstract, script and image slide deck provide a brief overview of the mechanism of action of entrectinib in NTRK+ solid tumours and ROS1+ NSCLC, the administration regimen and the key efficacy and tolerability outcomes from clinical trials. The video abstract, script and slide deck, which have been peer reviewed and were uploaded to Figshare after the Entrectinib in NTRK+ Solid Tumours and ROS1+ NSCLC Adis Drug Evaluation was published, are sponsored by F. Hoffmann-La Roche. The video abstract can be found here. © Springer Nature Switzerland AG 2022
Hydrogenation and Hydro-Carbonation and Etching of Single-Walled Carbon Nanotubes
Creators: name: Zhang, Guangyu
name: Qi, Pengfei
name: Wang, Xinran
name: Lu, Yuerui
name: Mann, David
name: Li, Xiaolin
name: Dai, Hongjie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a systematic experimental investigation of the reactions between hydrogen plasma and single-walled carbon nanotubes (SWNTs) at various temperatures. Microscopy, infrared (IR) and Raman spectroscopy and electrical transport measurements are carried out to investigate the properties of SWNTs after hydrogenation. Structural deformations, drastically reduced electrical conductance and increased semiconducting nature of SWNTs upon sidewall hydrogenation are observed. These changes are reversible upon thermal annealing at 500C via dehydrogenation. Harsh plasma or high temperature reactions lead to etching of nanotube likely via hydro-carbonation. Smaller SWNTs are markedly less stable against hydro-carbonation than larger tubes. The results are fundamental and may have implications to basic and practical applications including hydrogen storage, sensing, band-gap engineering for novel electronics and new methods of manipulation, functionalization and etching of nanotubes.
description: 3 pages, 4 figures
Transcription of "Panther and Bobcat"
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-131007-14: Transcription of the story of Panther and Bobcat, file VP-200107-01, from the beginning of the file to 1:19.
A STUDY ON AWARENESS AMONG CONSUMERS CONCERNING GREEN CRACKERS IN SIVAKASI
Creators: name: K. JEYARAM
name: G. KARUNANITHI
Publisher: name: Zenodo
Year: 2023
Subjects: National Green Tribunal, Crackers, Green Crackers, Fireworks, NEERI, Pollution, Diwali, Festivals. CSIR.

description: Abstract

According to the National Green Tribunal (NGT) 1, green crackers are permitted only in cities and towns where air quality is moderate or poor and reduction in emission of sound as well in green crackers. Indian Council of Scientific and Industrial Research (CSIR) developed green crackers which are better than previous sound-emitting crackers and other fireworks. The green crackers developed by the CSIR include flower pots, pencils, sparkles and chakkar. Green crackers are environment-friendly reducing air pollution that causes health hazards. The fireworks industry in Sivakasi has a turnover of Rs. 6,000 crores and around 8 lakhs people are employed by the industry. The Sivakasi and Virudhu nagar fireworks owners are expecting a fair share of the Chinese global firecracker market so that it would provide job opportunities to a larger number of people as even after mechanization, manpower is still a vital part of the industry. The 6000 crores fireworks industry of Sivakasi, which has turned mainly into green crackers, is now planning to tap the international firecracker industry hitherto dominated by Chinese players. The present study focuses on examining the awareness of the respondents concerning green crackers.
Local renormalizable gauge theories from nonlocal operators
Creators: name: Capri, M. A. L.
name: Lemes, V. E. R.
name: Sobreiro, R. F.
name: Sorella, S. P.
name: Thibes, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The possibility that nonlocal operators might be added to the Yang-Mills action is investigated. We point out that there exists a class of nonlocal operators which lead to renormalizable gauge theories. These operators turn out to be localizable by means of the introduction of auxiliary fields. The renormalizability is thus ensured by the symmetry content exhibited by the resulting local theory. The example of the nonlocal operator $\int A \frac{1}{D^2} A $ is analysed in detail. A few remarks on the possible role that these operators might have for confining theories are outlined.
description: 16 pages
Superheavy WIMP dark matter from incomplete thermalization
Creators: name: Okada, Nobuchika
name: Seto, Osamu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Although it is usually thought that a class of weakly interacting massive particle (WIMP) dark matters (DMs), which have the vector coupling with the $Z$ boson, is denied by null results of the direct DM searches, such WIMP DMs are still viable if they are superheavy with the mass of $m_{DM} \gtrsim 10^9$ GeV. In the future, the superheavy WIMP DMs can be searched up to $m_{DM} \simeq 10^{12}$ GeV, which corresponds to the so-called neutrino floor limit. We show that the observed abundance of $Ω_\mathrm{DM}h^2 \simeq 0.1$ for a superheavy WIMP DM can be reproduced by a suitable reheating temperature of $T_R \simeq m_{DM}/29$ after inflation, if the direct inflaton decay into DM is negligible or kinematically forbidden.
description: 11 pages, 2 figures, references added, version published in Phys. Lett. B
Game-Theoretic Models of Moral and Other-Regarding Agents (extended abstract)
Creators: name: Istrate, Gabriel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: We investigate Kantian equilibria in finite normal form games, a class of non-Nashian, morally motivated courses of action that was recently proposed in the economics literature. We highlight a number of problems with such equilibria, including computational intractability, a high price of miscoordination, and problematic extension to general normal form games. We give such a generalization based on concept of program equilibria, and point out that that a practically relevant generalization may not exist. To remedy this we propose some general, intuitive, computationally tractable, other-regarding equilibria that are special cases Kantian equilibria, as well as a class of courses of action that interpolates between purely self-regarding and Kantian behavior.
description: In Proceedings TARK 2021, arXiv:2106.10886. This is the extended abstract that appears in the Proceedings of TARK 2021. A longer, more complete, version of the paper is available as preprint arXiv:2012.09759
Observation-assisted optimal control of quantum dynamics
Creators: name: Shuang, Feng
name: Pechen, Alexander
name: Ho, Tak-San
name: Rabitz, Herschel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper explores the utility of instantaneous and continuous observations in the optimal control of quantum dynamics. Simulations of the processes are performed on several multilevel quantum systems with the goal of population transfer. Optimal control fields are shown to be capable of cooperating or fighting with observations to achieve a good yield, and the nature of the observations may be optimized to more effectively control the quantum dynamics. Quantum observations also can break dynamical symmetries to increase the controllability of a quantum system. The quantum Zeno and anti-Zeno effects induced by observations are the key operating principles in these processes. The results indicate that quantum observations can be effective tools in the control of quantum dynamics.
Απόψεις Εκπαιδευτικών για την διαχείριση του μαθητικού προσφυγικού πληθυσμού υπό το πρίσμα της εκπαίδευσης για την ιδιότητα του πολίτη
Creators: name: Μέσκα, Αθηνά Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ενεργός Πολίτης
Διαπολιτισμική Εκπαίδευση
Απόψεις εκπαιδευτικών
Active citizenship
Multicultural Education
Teacher’s views

description: Η συγκεκριμένη πτυχιακή εργασία, που πραγματοποιείται στο πλαίσιο του Μεταπτυχιακού Προγράμματος Σπουδών, πραγματεύεται την έννοια και τις πτυχές της ιδιότητας του ενεργού πολίτη. Η ιδιότητα του ενεργού πολίτη μετενσαρκώνεται με τον τρόπο που αυτός αντιμετωπίζει την σύγχρονη πολυπολιτισμική πραγματικότητα. Αρχικά , δίνονται οι δύο έννοιες ‘πολίτης’ και ‘ενεργός’, που στην παρούσα εργασία είναι δύο έννοιες άρρηκτα συνδεδεμένες. Εν συνεχεία διαφαίνεται η θεωρητική προσέγγιση τους ενεργού πολίτη μέσα από κοινωνιολογικά μοντέλα, μέσα από τα οποία προάγεται η ανάπτυξη του ατόμου ως ενεργό μέλος των σύγχρονων πολυπολιτισμικών κοινωνιών. Τέλος , την ενεργό συμμετοχή το άτομο την κατακτά, την μαθαίνει και καλλιεργεί δεξιότητες. Τα εφόδια αυτά μπορούν να αποκτηθούν μέσα από κατάλληλες πρακτικές που προωθεί ο εκπαιδευτικός στο πλαίσιο τάξης και τις επεκτείνει πέρα από τα όρια της
description: This undergraduate thesis, carried out in the framework of the Postgraduate Diploma Program, addresses the concept and aspects of active citizenship. Active citizenship is reincarnated in the way that it treats contemporary multicultural reality. Initially, the two concepts of 'citizen' and 'active' are given, which in the present work are two concepts inextricably linked. The theoretical approach to active citizenship through sociological models is then shown. Where these models promote the development of the individual as an active member of modern multicultural societies . Finally, the active involvement one acquires , learns and cultivates skills. These supplies can be acquired through appropriate practices that the teacher promotes within the classroom and extends beyond the bounds
Ασφαλιστικές Εισφορές – Κ.Ε.Α.Ο.
Creators: name: Νέτσκα, Θεοδώρα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ασφαλιστικές Εισφορές
Αναγκαστική Είσπραξη Ασφαλιστικών Εισφορών
Προστασία και Άμυνα Οφειλέτη
Social Security Contributions
Enforced Collection of Social Security Contributions
Debtor Protection and Defense

description: Η παρούσα εργασία ασχολείται με τα ζητήματα των ασφαλιστικών εισφορών και την αναγκαστική τους είσπραξη, μετά την εφαρμογή του Ν. 4387/2016 και του άρθρου 101 του Ν. 4172/2013. Ειδικότερα, γίνεται αναφορά στην έννοια και τη νομική φύση της ασφαλιστικής εισφοράς και προσδιορίζονται οι κατηγορίες των υποχρέων για την καταβολή αυτής προσώπων, ο τρόπος υπολογισμού (ασφαλιστική βάση) και ο τρόπος και ο χρόνος καταβολής, σύμφωνα με τις διατάξεις του Ν. 4387/2016, με τον οποίο ενοποιήθηκαν όλοι οι ασφαλιστικοί φορείς της χώρας τόσο σε λειτουργικό όσο και σε ουσιαστικό επίπεδο. Στην συνέχεια περιγράφεται το νέο σύστημα είσπραξης των ασφαλιστικών εισφορών μέσα από την λειτουργία του Κ.Ε.Α.Ο., το οποίο, για τον σκοπό της ενίσχυσης της βιωσιμότητας των ασφαλιστικών φορέων και της καταπολέμησης της εισφοροδιαφυγής, εφαρμόζει ενιαίες διαδικασίες βεβαίωσης και είσπραξης των ασφαλιστικών οφειλών όλων των φορέων. Τέλος, παρουσιάζονται τα μέσα προστασίας και άμυνας του οφειλέτη σε κάθε στάδιο βεβαίωσης της οφειλής, που αφορούν την ενδικοφανή διαδικασία, την δικαστική αμφισβήτηση της απαίτησης, την διαδικασία της διοικητικής εκτέλεσης και την προσωρινή δικαστική προστασία
description: The present thesis studies the subjects of social security contributions and their enforced collection, after the implementation of the Law 4387/2016 and the article 101 of the Law 4172/2013. Particularly, reference is made to the meaning and the legal nature of the contributions, to the identification of persons liable to their payment, to the calculating method (insurance base) and to the ways and time of the payment, in accordance with the provisions of the Law 4387/2016, which integrated all social security institutions of the country at both operational and substantial levels. It follows the description of the new collection system of social security contributions through the operation of C.C.S.S.A. (Center for the Collection of Social Security Arrears – K.E.A.O.), which applies unified procedures for the certification and the collection of the arrears of all social securtiy institutions, pursuing to enhance the sustainability of the institutions and to combat evasion of social security contributions. Finally, the means of protection and defense of the debtor are presented at each stage of the arrears’ certification, regarding to the quasi-judicial procedure, the judicial contestation of the claim, the process of administrative execution and the interim judicial protection
Coexistence of opposite opinions in a network with communities
Creators: name: Lambiotte, R.
name: Ausloos, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The Majority Rule is applied to a topology that consists of two coupled random networks, thereby mimicking the modular structure observed in social networks. We calculate analytically the asymptotic behaviour of the model and derive a phase diagram that depends on the frequency of random opinion flips and on the inter-connectivity between the two communities. It is shown that three regimes may take place: a disordered regime, where no collective phenomena takes place; a symmetric regime, where the nodes in both communities reach the same average opinion; an asymmetric regime, where the nodes in each community reach an opposite average opinion. The transition from the asymmetric regime to the symmetric regime is shown to be discontinuous.
description: 14 pages, 4 figures
Quantum Energies of Strings in a 2+1 Dimensional Gauge Theory
Creators: name: Graham, N.
name: Quandt, M.
name: Schroeder, O.
name: Weigel, H.
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: We study classically unstable string type configurations and compute the renormalized vacuum polarization energies that arise from fermion fluctuations in a 2+1 dimensional analog of the standard model. We then search for a minimum of the total energy (classical plus vacuum polarization energies) by varying the profile functions that characterize the string. We find that typical string configurations bind numerous fermions and that populating these levels is beneficial to further decrease the total energy. Ultimately our goal is to explore the stabilization of string type configurations in the standard model through quantum effects. We compute the vacuum polarization energy within the phase shift formalism which identifies terms in the Born series for scattering data and Feynman diagrams. This approach allows us to implement standard renormalization conditions of perturbation theory and thus yields the unambiguous result for this non--perturbative contribution to the total energy.
description: 26 pages, 20 eps-files combined to 8 figures, minor typos corrected. Version to be published in Nucl. Phys. B
Top-quark FCNC Productions at LHC in Topcolor-assisted Technicolor Model
Creators: name: Cao, Junjie
name: Liu, Guoli
name: Yang, Jin Min
name: Zhang, Huanjun
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We evaluate the top-quark FCNC productions induced by the topcolor assisted technicolor (TC2) model at the LHC. These productions proceed respectively through the parton-level processes g g -> t c_bar, c g->t, c g -> t g, c g -> t Z and c g -> t γ. We show the dependence of the production rates on the relevant TC2 parameters and compare the results with the predictions in the minimal supersymmetric model. We find that for each channel the TC2 model predicts a much larger production rate than the supersymmetric model. All these rare productions in the TC2 model can be enhanced above the 3-sigma sensitivity of the LHC. Since in the minimal supersymmetric model only c g -> t is slightly larger than the corresponding LHC sensitivity, the observation of these processes will favor the TC2 model over the supersymmetric model. In case of unobservation, the LHC can set meaningful constraints on the TC2 parameters.
description: 5 pages, 4 figs
Unconventional hydrocarbon systems – Exploration and exploitation
Creators: name: Τσιρέκας, Δημήτριος Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μη συμβατικά κοιτάσματα υδρογονανθράκων
Σχιστολιθικό αέριο
Υδραυλική ρωγμάτωση
Unconventional hydrocarbon systems
Shale gas
Hydraulic fracturing

description: Σκοπός της παρούσας διατριβής ήταν η μελέτη των μη συμβατικών πετρελαϊκών συστημάτων καθώς και οι τρόποι έρευνας και εκμετάλλευσης αυτών. Εξετάσαμε αρχικά τις προϋποθέσεις που πρέπει να ισχύουν για την δημιουργία συμβατικών κοιτασμάτων υδρογονανθράκων. Στη συνέχεια αναλύσαμε τις διαφορές ενός συμβατικού κοιτάσματος υδρογονανθράκων, σε σχέση με τα μη συμβατικά κοιτάσματα υδρογονανθράκων. Αναφερθήκαμε αναλυτικά στους τύπους των μη συμβατικών κοιτασμάτων και δόθηκε μεγαλύτερη βαρύτητα στο σχιστολιθικό αέριο. Αναλύθηκε ο τρόπος δημιουργίας αυτού, ο τρόπος αποθήκευσης του στον ταμιευτήρα και παρουσιάστηκαν τα παγκόσμια αποθέματα και αναλύθηκε η πιθανότητα ύπαρξης στον Ελλαδικό χώρο. Στη συνέχεια αναλύθηκαν οι τρόποι έρευνας του σχιστολιθικού αερίου με την όρυξη γεωτρήσεων και η εκμετάλλευση αυτού με την ανάπτυξη προηγμένων τεχνολογιών όπως η οριζόντια διάτρηση και η υδραυλική διάρρηξη. Τέλος παρουσιάστηκαν οι επιπτώσεις της εκμετάλλευσης του σχιστολιθικού αερίου τόσο στο περιβάλλον όσο και στον άνθρωπο
description: The aim of this thesis was to study the unconventional oil systems and the ways of exploration and exploitation took place. We first examined the conditions that should apply to the creation of conventional hydrocarbon deposits. We then analyzed the differences of a conventional hydrocarbon deposit relative to an unconventional hydrocarbon deposit. We referred analytically to the types of unconventional deposits and increased gradient was given to the shale gas. It analyzed how this was created, how it was stored in the reservoir and that the world reserves were presented and the possibility of existence in Greece was analyzed. We then explored ways of exploring shale gas by drilling and exploiting it by developing advanced technologies such as horizontal drilling and hydraulic fracturing. Finally, the effects of the shale gas production by hydraulic fracturing on both the environment and humans were presented
description: Σε συνεργασία με το τμήμα Μηχανικών Μεταλλείων Μεταλλουργών (Εθνικό Μετσόβιο Πολυτεχνείο),
description: Γεωλογίας και Γεωπεριβάλλοντος (Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών) και
description: Οικονομικών Επιστημών (Δημοκρίτειο Πανεπιστήμιο Θράκης)
Superconducting contacts to a monolayer semiconductor
Creators: name: Ramezani, M.
name: Sampaio, I. Correa
name: Watanabe, K.
name: Taniguchi, T.
name: Schönenberger, C.
name: Baumgartner, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate superconducting vertical interconnect access (VIA) contacts to a monolayer of molybdenum disulfide (MoS$_2$), a layered semiconductor with highly relevant electronic and optical properties. As a contact material we use MoRe, a superconductor with a high critical magnetic field and high critical temperature. The electron transport is mostly dominated by a single superconductor/normal conductor junction with a clear superconductor gap. In addition, we find MoS$_2$ regions that are strongly coupled to the superconductor, resulting in resonant Andreev tunneling and junction dependent gap characteristics, suggesting a superconducting proximity effect. Magnetoresistance measurements show that the bandstructure and the high intrinsic carrier mobility remain intact in the bulk of the MoS$_2$. This type of VIA contact is applicable to a large variety of layered materials and superconducting contacts, opening up a path to monolayer semiconductors as a platform for superconducting hybrid devices.
On strongly Petrovskii's parabolic SPDEs in arbitrary dimension and the stochastic Cahn-Hilliard equation
Creators: name: Cardon-Weber, Caoline
name: Millet, Annie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H07 60H15 35R60

description: In this paper we show that the Cahn-Hilliard stochastic SPDE has a function valued solution in dimension 4 and 5 when the perturbation is driven by a space-correlated Gaussian noise. This is done proving general results on SPDEs with globally Lipschitz coefficients associated with operators on smooth domains of $\mathbb{R}^d$ which are parabolic in the sense of Petrovskii}, and do not necessarily define a semi-group of operators. We study the regularity of the trajectories of the solutions and the absolute continuity of the law at some given time and position.
Storage and Regulation of River Flows by Dams and Reservoirs
Creators: name: Wurbs, Ph.D.
Publisher: name: Texas Water Journal
Year: 2021

description: Water management in Texas is driven by dramatic spatial and temporal hydrologic variability, continual rapid population growth, declining groundwater supplies, and intensifying demands on surface water resources. Dams and reservoirs are essential for providing reliable water supplies and reducing flood risks. Numerous reservoir projects, most constructed during the 1940s through 1980s era of large scale water project construction nationwide, are operated throughout the state to store and regulate extremely variable river flows for beneficial purposes. This paper explores river system hydrology in Texas, operation of dams and reservoirs statewide to deal with extreme flow fluctuations, and associated complexities, issues, and water management strategies. The central focus of the paper is the role of large reservoirs in managing hydrologic variability and associated future uncertainty in an environment of growing demands on limited resources.
description: Texas Water Journal, Vol. 12 No. 1 (2021)
Fully constrained, high-resolution shock-capturing, formulation of the Einstein-fluid equations in $2+1$ dimensions
Creators: name: Gundlach, Carsten
name: Bourg, Patrick
name: Davey, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Four components of the axisymmetric Einstein equations in 2+1 dimensions with negative cosmological constant can be written as $\nabla_aM=\dots$ and $\nabla_aJ=\dots$, where the dots stand for stress-energy terms, and $M$ and $J$ are scalars. In vacuum, they reduce to the constant mass and angular momentum parameters of the BTZ solution of the same name. The integrability conditions for the Einstein equations give rise to two conserved stress-energy currents $\nabla_aj^a_{(M)}=0$ and $\nabla_aj^a_{(J)}=0$. The angular momentum current is just the Noether current due to axisymmetry, but the mass current is unexpected in the presence of rotation. The conserved quantity $M$ exists in all dimensions in spherical symmetry, known as the Misner-Sharp, Hawking or Kodama mass, but in 2+1 dimensions $M$ exists also in axisymmetry, even with rotation. We use $M$ and $J$ to give a fully constrained formulation of the axisymmetric Einstein equations in 2+1 dimensions, where the Einstein equations are solved by explicit integration from the center along time slices. We use the two conserved matter currents in the construction of a high-resolution shock-capturing formulation of the Einstein-perfect fluid system, in which $M$ and $J$ momentum are then exactly conserved by construction. We demonstrate convergence of the code in the test cases of generic dispersion and collapse and stable and unstable rotating stars.
description: 23 pages, 17 figures, Typos corrected. This version has been accepted by PRD
A model checker for statecharts (linking case tools with formal methods)
Creators: name: Day, Nancy Ann
Publisher: name: University of British Columbia
Year: 2008

description: Computer-Aided Software Engineering (CASE) tools encourage users to codify the specification for the design of a system early in the development process. They often use graphical formalisms, simulation, and prototyping to help express ideas concisely and unambiguously. Some tools provide little more than syntax checking of the specification but others can test the model for reachability of conditions, nondeterminism, or deadlock. Formal methods include powerful tools like automatic model checking to exhaustively check a model against certain requirements. Integrating formal techniques into the sys-tem development process is an effective method of providing more thorough analysis of specifications than conventional approaches employed by Computer-Aided Software Engineering (CASE) tools. In order to create this link, the formalism used by the CASE tool must have a precise formal semantics that can be understood by the verification tool. The CASE tool STATEMATE makes use of an extended state transition notation called statecharts. We have formalized an operational semantics for statecharts by embedding them in the logical framework of an interactive proof-assistant system called HOL. A software interface is provided to extract a statechart directly from the STATEMATE database. Using HOL in combination with Voss, a binary decision diagram-based verification tool, we have developed a model checker for statecharts which tests whether an operational specification, given by a statechart, satisfies a descriptive specification of the system requirements. The model checking procedure is a simple higher-order logic function which executes the semantics of statecharts. In this thesis, we describe the formal semantics of statecharts and the model checking algorithm. Various examples, including an intersection with a traffic light and an arbiter, are presented to illustrate the method.
Discussion of prayers and stories about Indian devils
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-131007-13: Discussion of prayers, with an example given in Hupa, followed by stories about Indian devils told in English and Hupa. Out of respect for privacy and/or cultural considerations, the file has been lightly edited to remove sensitive content from public access. Edited portions deposited separately.