cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Change your life(span) one "day" at a time
Creators: name: Pusch, Oliver
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Nothobranchius
subject: Aging
subject: Circadian Clocks
subject: Alternative Day Lenghts
subject: "Metaverse"

description: Aging can be perceived as a degrading force that ultimately leads to death by consuming an organism's life energy. However, understanding how time is consumed is a challenging question, as different living organisms have unique biological clocks that do not always align with physical time. In this study, we aim to investigate whether daily routines, dictated by the light and dark phases, could influence the rate of aging more than the continuous flow of time. We intend to expose fish to different, isolated T-cycle environments, which mimic day lengths ranging from -50% (12 hours) to +50% (36 hours) of a conventional 24 hour day. Our primary objective is to evaluate the changes in lifespan, behavior, and gene clock synchronization of fish exposed to these alternative T-cycles. An essential aspect of our study is optimizing food delivery, as it is challenging to feed fish in different day length environments while maintaining comparable feeding events and calorie intake. To address this challenge, we developed automatic feeders that can integrate and synchronize with the light system. By optimizing food delivery time and amount, we can attribute potential lifespan changes specifically to the light/darkness rhythm change or the effect of a different diet routine. In today's world, which has long detached from natural light/darkness environments and is becoming increasingly separated through digitalization, progression into a virtual “Metaverse”, and the challenge of space travels, exploring the potential of alternative day-length scenarios to extend lifespan, by slowing the consumption of life routines, is of paramount interest.
Τα τριπτά εργαλεία από το Νεολιθικό οικισμό στη λίμνη Κορώνεια
Creators: name: Αλμασίδου, Ελευθερία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Λίθινα Τριπτά Εργαλεία
Νεολιθική περίοδος-Μακεδονία
Ground Stone Tools
Neolithic period-Macedonia

description: Η παρούσα διπλωματική εργασία εξετάζει τα λίθινα τριπτά εργαλεία που εντοπίστηκαν στο νεολιθικό οικισμό Κορώνεια. Ο οικισμός εντοπίστηκε 1.650 μέτρα ανατολικά της λίμνης Κορώνεια, από την οποία πήρε και το όνομά του, και βρίσκεται στο δυτικό τμήμα της λεκάνης του Λαγκαδά. Οι σωστικές ανασκαφές έφεραν στο φως ένα αρκετά μεγάλο πλήθος τριπτών αντικειμένων το οποίο περιλαμβάνει εργαλεία με κόψη, εργαλεία τριβής και κρούσης (παθητικά εργαλεία τριβής, τριπτήρες, γουδοχέρια, ακόνια, στιλβωτήρες, κρουστήρες), εργαλεία πολλαπλών χρήσεων, αλλά και διάφορα αντικείμενα, όπως αντικείμενα με οπή και με αυλάκωση και κεφαλές ροπάλων, καθώς και τμήματα πρώτων υλών και υποπροϊόντων κατασκευής των παραπάνω τεχνουργημάτων. Τα αντικείμενα μελετήθηκαν ως προς τα μορφολογικά χαρακτηριστικά, τις τεχνικές κατασκευής, τη χρήση, τις πρώτες ύλες και το αρχαιολογικό τους πλαίσιο με σκοπό την ανασύνθεση όλου του κύκλου ζωής τους από την επιλογή της πρώτης ύλης ως την τελική απόθεσή τους. Μέσα από τη συγκεκριμένη προσέγγιση αποπειράται η ανάλυση ζητημάτων, όπως η διαχείριση των εργαλείων στα πλαίσια της κοινότητας, ο ρόλος που είχαν στην καθημερινότητα των κατοίκων και κατ’ επέκταση η κατανόηση διαφόρων πτυχών της καθημερινής ζωής στον οικισμό της Κορώνειας
description: The present thesis researches the ground stone tools from the Neolithic settlement of Koroneia. The settlement is established 1.650 meters east of lake Koroneia, from which it was named, and is located in the western part of the Lagadas basin. During the rescue excavations, a large number of ground stone objects, including cutting tools, abrading, grinding and percussion tools (grindings slabs, grinders, pestles, abraders, polishers, hammerstones), multiple-use tools, as well as various objects such as perforated artifacts and objects with grooves, maceheads and also parts of raw materials and by-products of manufacture of the above artifacts were brought to light. The objects were examined in terms of morphological characteristics, manufacture, use, raw materials and their archaeological context in order to reconstruct their entire cycle life from the selection of the raw material to the final disposal. Through this approach it is attempted to analyze issues such as the management of tools within the society, their role in the everyday life of the inhabitants and, by extension, the understanding of various aspects of everyday life in the settlement of Koroneia
Τα χαρισματικά παιδιά και η εκπαίδευσή τους: Η περίπτωση της Ελλάδας
Creators: name: Χατζημωυσιάδης, Σωκράτης Μωυσή
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Χαρισματικότητα
Χαρισματικοί/ές μαθητές/τριες-Εκπαίδευση
Giftedness
Gifted students-Education

description: Το ζήτημα της χαρισματικότητας είναι αρκετά περίπλοκο και πολυδιάστατο. Οι χαρισματικοί μαθητές αποτελούν μια ιδιαιτέρως παραμελημένη ομάδα του μαθητικού πληθυσμού. Παρόλο που η εκπαίδευσή τους τυπικά εντάσσεται στα πλαίσια της Ειδικής Αγωγής, ουσιαστικά δε λαμβάνουν κάποια υποστήριξη εντός του σχολικού περιβάλλοντος, προκειμένου να μπορέσουν να αναπτύξουν τις κλίσεις και τα ταλέντα τους. Σκοπός της παρούσας εργασίας είναι η ενημέρωση σχετικά με την ύπαρξη χαρισματικών μαθητών/τριών στα σχολεία και η ευαισθητοποίηση αναφορικά με τις ιδιαίτερες εκπαιδευτικές τους ανάγκες. Αρχικά, παρουσιάζονται ορισμένες έννοιες και θεωρίες που συνδέονται με τη χαρισματικότητα, καθώς και τα πιο συνηθισμένα χαρακτηριστικά γνωρίσματα των χαρισματικών παιδιών. Στη συνέχεια, παραθέτονται οι μέθοδοι εντοπισμού των μαθητών/τριών αυτών και τέλος περιγράφονται τόσο η εκπαίδευσή τους και τα εκπαιδευτικά προγράμματα που θα μπορούσαν να εφαρμοστούν προς όφελός τους, όσο και η εκπαιδευτική πραγματικότητα που επικρατεί σήμερα στην Ελλάδα σχετικά με τους/τις χαρισματικούς/ές μαθητές/τριες
description: The issue of giftedness is complex and multifaceted. Gifted children is a very neglected group of the school population. Although their training is typically part of Special Education, they do not receive any support within the school environment, in order to be able to develop their talents. The purpose of this paper is to inform about the existence of gifted students in schools and to sensitize, regarding their specific educational needs. Initially, some concepts and theories related to the giftedness and the most common characteristics of gifted children are presented. Then, the detection methods of these students, the education they receive, as well as the educational programs that could be put into practice are described. Finally, special reference is made to the situation of the education of gifted students in Greece
Hard X-ray emission of the microquasar GX 339-4 in the low/hard state
Creators: name: Joinet, A.
name: Jourdain, E.
name: Malzac, J.
name: Roques, J. P.
name: Corbel, S.
name: Rodriguez, J.
name: Kalemci, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the analysis of the high energy emission of the Galactic black hole binary GX 339-4 in a low/hard state at the beginning of its 2004 outburst. The data from 273 ks of INTEGRAL observations, spread over 4 weeks, are analyzed, along with the existing simultaneous RXTE HEXTE and PCA data. During this period, the flux increases by a factor of about 3, while the spectral shape is quite unchanged, at least up to 150 keV. The high energy data allows us to detect the presence of a high energy cut-off, generally related to thermal mechanisms, and to estimate the plasma parameters in the framework of the Comptonization models. We found an electron temperature of 60-70 keV, an optical depth around 2.5, with a rather low reflection factor (0.2-0.4). In the last observation, we detected a high energy excess above 200 keV with respect to thermal Comptonization while at lower energy, the spectrum is practically identical to the previous one, taken just 2 days before. This suggests that the low and high energy components have a different origin.
description: 12 pages, 6 figures, accepted for publication in ApJ
Testing Models of Stellar Structure and Evolution I. Comparison with Detached Eclipsing Binaries
Creators: name: del Burgo, Carlos
name: Prieto, Carlos Allende
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of an analysis aimed at testing the accuracy and precision of the PARSEC v1.2S library of stellar evolution models, in a Bayesian framework, to infer stellar parameters. We mainly employ the online DEBCat catalogue by Southworth, a compilation of detached eclipsing binary systems with published measurements of masses and radii to $\sim$ 2 per cent precision. We select a sample of 318 binary components, with masses between 0.10 and 14.5 Msun, at distances between 1.3 pc and ~ 8 kpc for Galactic objects and ~ 44-68 kpc for extragalactic ones. The Bayesian analysis applied takes as input effective temperature, radius, and [Fe/H], and their uncertainties, returning theoretical predictions for other stellar parameters. From the comparison with dynamical masses, we conclude that the inferred masses are precisely derived for stars on the main-sequence and in the core-helium-burning phase, with uncertainties of 4 per cent and 7 per cent, respectively, on average. Masses for subgiants and red giants are predicted within 14 per cent, and those for early asymptotic giant branch stars within 24 per cent. These results are helpful to further improve the models, in particular for advanced evolutionary stages for which our understanding is limited. We obtain distances and ages for the binary systems and compare them, whenever possible, with precise literature estimates, finding excellent agreement. We discuss evolutionary effects and challenges for inferring stellar ages from evolutionary models. We also provide useful polynomial fittings to theoretical zero-age main-sequence relationships.
description: 25 pages, 26 figures
Haze seasonal variations of Titan's upper atmosphere during the Cassini Mission
Creators: name: Seignovert, Benoît
name: Rannou, Pascal
name: West, Robert A.
name: Vinatier, Sandrine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: This study presents a 13 years survey of haze UV extinction profiles, monitoring the temporal evolution of the detached haze layer (DHL) in Titan's upper atmosphere (350-600 km). As reported by West et al. 2011 (GRL vol.38, L06204) at the equator, we show that the DHL is present at all latitudes below 55°N during the northern winter (2004-2009). Then, it globally sunk and disappeared in 2012. No permanent DHL was observed between 2012 and 2015. It's only in late-2015, that a new structure emerged from the Northern hemisphere and propagated to the equator. This new DHL is not as pronounced as in 2004 and is much more complex than the one observed earlier. In one specific sequence, in 2005, we were able to investigate the short time scale variability of the DHL and no major changes was observed. When both side of the limb were visible (dawn/dusk), we notice that the extinction of the DHL is slightly higher on the dawn side. Additionally, during a polar flyby in 2009, we observed the longitudinal variability of the DHL and spotted some local inhomogeneities. Finally, comparisons with UVIS stellar occultations and General Climate Models (GCMs) are both consistent with our findings. However, we noticed that the timing of the DHL main pattern predicted by the GMCs can be off by up to 30° in solar longitude. All these observations bring new perspectives on the seasonal cycle of Titan's upper atmosphere, the evolution of the DHL and its interaction with the dynamics.
Preheating and Affleck-Dine leptogenesis after thermal inflation
Creators: name: Felder, Gary N.
name: Kim, Hyunbyuk
name: Park, Wan-Il
name: Stewart, Ewan D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Previously, we proposed a model of low energy Affleck-Dine leptogenesis in the context of thermal inflation. The lepton asymmetry is generated at the end of thermal inflation, which occurs at a relatively low energy scale with the Hubble parameter somewhere in the range $1 \keV \lesssim H \lesssim 1 \MeV$. Thus Hubble damping will be ineffective in bringing the Affleck-Dine field into the lepton conserving region near the origin, leaving the possibility that the lepton number could be washed out. Previously, we suggested that preheating could damp the amplitude of the Affleck-Dine field allowing conservation of the lepton number. In this paper, we demonstrate numerically that preheating does efficiently damp the amplitude of the Affleck-Dine field and that the lepton number is conserved as the result. In addition to demonstrating a crucial aspect of our model, it also opens the more general possibility of low energy Affleck-Dine baryogenesis.
description: 38 pages, 17 figures
Vertex-centric Parallel Computation of SQL Queries
Creators: name: Smagulova, Ainur
name: Deutsch, Alin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: We present a scheme for parallel execution of SQL queries on top of any vertex-centric BSP graph processing engine. The scheme comprises a graph encoding of relational instances and a vertex program specification of our algorithm called TAG-join, which matches the theoretical communication and computation complexity of state-of-the-art join algorithms. When run on top of the vertex-centric TigerGraph database engine on a single multi-core server, TAG-join exploits thread parallelism and is competitive with (and often outperforms) reference RDBMSs on the TPC benchmarks they are traditionally tuned for. In a distributed cluster, TAG-join outperforms the popular Spark SQL engine.
description: 50 pages, LaTeX; added examples in Section 6.4; corrected figure in Section 8.6
Ανάλυση αιθερίων ελαίων και μελέτη αντιοξειδωτικής δράσης καλλιεργούμενης ρίγανης
Creators: name: Χατζημαυρουδής, Χριστόδουλος-Στέφανος Κλήμεντος
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Καλλιεργούμενη ελληνική ρίγανη
Αιθέρια έλαια
Αντιοξειδωτική δράση
Cultivated greek oregano
Essential oils
Antioxidant activity

description: Στην παρούσα διατριβή μελετήθηκαν τα διάφορα δεδομένα γύρω από την ανάπτυξη, σε καλλιέργεια, φυτών του γένους Origanum vulgare ssp. hirtum με τη μελέτη να επικεντρώνεται κυρίως στα ποιοτικά και ποσοτικά χαρακτηριστικά του αιθερίου ελαίου που λαμβάνεται κατά την απόσταξη των υπέργειων τμημάτων τους και το κατά πόσο αυτά επηρεάζονται από τη σύσταση του εδάφους, τη χρονική στιγμή της συλλογής του φυτικού υλικού και την εφαρμογή διαφόρων σκευασμάτων στα φυτά. Το πειραματικό πλάνο βασίστηκε σε ένα λατινικό τετράγωνο 3x3 και η στατιστική ανάλυση των δεδομένων έγινε με τη μέθοδο ANOVA με το SPSS 15.0. Η παραλαβή των πτητικών συστατικών έγινε με υδροαπόσταξη και η ποιοτική και ποσοτική ανάλυση με αέριο χρωματογραφία μάζας (GC-MS). Τέλος, εκτιμήθηκε η αντιοξειδωτική ικανότητα της καλλιεργούμενης ρίγανης μετά από αλληλεπίδραση των δειγμάτων με την σταθερή ρίζα του 1,1- διφαινυλο- 2- πικρυλυδραζυλίου (DPPH)
description: In this thesis it was the various data concerning the growth of cultivated plants of Origanum vulgare ssp. hirtum that were studied. The study was focused mainly on the qualitative and quantitative characteristics of the essential oil obtained by distillation of the aerial parts and whether they are affected by the soil composition, the time of collection of the plant material and the application of various formulations to plants. The experimental plant was based on a latin square 3x3 and the statistical analysis of data was done using the ANOVA method with the SPSS 15.0 program. The volatile components were obtained by hydrodistillation and the quality and quantity control took place in a gas chromatography mass spectrometry (GC-MS). Finally, the antioxidant activity of the cultivated oregano was studied via the interaction of the samples with the stable free radical 1,1- diphenyl- 2- picrylhydrazyl (DPPH)
Opportunities and challenges in partitioning the graph measure space of real-world networks
Creators: name: Józsa, Máté
name: Lázár, Alpár S.
name: Lázár, Zsolt I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Based on a large dataset containing thousands of real-world networks ranging from genetic, protein interaction, and metabolic networks to brain, language, ecology, and social networks we search for defining structural measures of the different complex network domains (CND). We calculate 208 measures for all networks and using a comprehensive and scrupulous workflow of statistical and machine learning methods we investigated the limitations and possibilities of identifying the key graph measures of CNDs. Our approach managed to identify well distinguishable groups of network domains and confer their relevant features. These features turn out to be CND specific and not unique even at the level of individual CNDs. The presented methodology may be applied to other similar scenarios involving highly unbalanced and skewed datasets.
description: 11 pages, 6 figures
Polarized sea measurements at JPARC
Creators: name: Contalbrigo, Marco
name: Drago, Alessandro
name: Lenisa, Paolo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Large double spin-asymmetries can be foreseen for Drell-Yan production in $p p$ scattering at JPARC energies. The sign of the asymmetries can be used to discriminate between different model calculations of sea quark distributions.
description: 4 pages, 2 figures, Proceedings of DIS2006, Kyoto 2006
Οικουμένη, Οικονομία, Οικολογία στις Συνάξεις των Προκαθημένων των Ορθοδόξων Αυτοκέφαλων Εκκλησιών
Creators: name: Αβραμίδου, Αλεξία Μωυσή
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: subject: Συνάξεις
subject: Οικουμένη
subject: Οικολογία
subject: Synaxes
subject: Ecumene
subject: Ecology
subject: FOS: Biological sciences

description: Σκοπός της διατριβής ήταν η μελέτη και η εκτενής ανάλυση του θεσμού των Συνάξεων των Προκαθημένων των Ορθοδόξων Αυτοκεφάλων Εκκλησιών, τις οποίες εντάσσουμε σε ένα ευρύτερο κοινωνικό και πολιτικό πλαίσιο. Ειδικότερα, οι Συνάξεις είναι ένας θεσμός που δημιουργήθηκε από τον Οικουμενικό Πατριάρχη Βαρθολομαίο το 1991. Το πεδίο μελέτης γίνεται πιο συγκεκριμένο και μετατοπίζεται στις εννέα Συνάξεις, όπου πραγματοποιείται ξεχωριστή ανάλυση εξετάζοντας διεξοδικά τα θέματά τους. Αρχικά, πραγματοποιείται εκτενής ανάλυση των διορθόδοξων, διαχριστιανικών και διαθρησκειακών σχέσεων καθώς και των προβλημάτων τους. Έπειτα, αναλύεται η οικονομική κατάσταση, κατά την οποία λαμβάνουν χώρα οι Συνάξεις, καθώς και ο ρόλος της Ορθόδοξης Εκκλησίας απέναντι σε αυτή. Τέλος, εστιάζουμε και στο οικολογικό πρόβλημα για το οποίο το Οικουμενικό Πατριαρχείο Κωνσταντινουπόλεως δείχνει ιδιαίτερη μέριμνα και ευαισθησία, ιδιαίτερα μετά την ανάληψη των καθηκόντων από τον Οικουμενικό Πατριάρχη Βαρθολομαίο, ο οποίος είναι γνωστός ως «Πράσινος Πατριάρχης»
description: The aim of the present thesis was the study and the extensive analysis of Synaxis which we include in a wider social and political frame. Particularly, Synaxis is a constitution which is established by the Ecumenical Patriarch Bartholomew in 1991. The field study becomes more specific in nine Synaxis, where a separate analysis is carried out examining their subjects in detail. First of all, an extensive analysis is performed in dialogue between Orthodox, Christians and other religions as and their problems. Furthermore, we analyze the economic situation in which Synaxis took place, as well as the role of the Orthodox Church in relation to it. Finally, we also focus on the ecological problem for which the Ecumenical Patriarchate of Constantinople shows particular concern and sensitivity, especially after the assumption of duties by the Ecumenical Patriarch Bartholomew, who is known as the "Green Patriarch"
On Electroweak Matching Conditions for Top Pair Production at Threshold
Creators: name: Hoang, A. H.
name: Reisser, C. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the real parts of electroweak matching conditions relevant for top quark pair production close to threshold in e+e- annihilation at next-to-next-to-leading logarithmic (NNLL) order. Numerically the corrections are comparable to the NNLL QCD corrections.
description: 12 pages, revtex4, 1 postscript figure included; minor changes in text and references, version published in Phys. Rev. D
A SOPHIE RV search for giant planets around young nearby stars (YNS). A combination with the HARPS YNS survey
Creators: name: Grandjean, A.
name: Lagrange, A. -M.
name: Meunier, N.
name: Rubini, P.
name: Desidera, S.
name: Galland, F.
name: Borgniet, S.
name: Zicher, N.
name: Messina, S.
name: Chauvin, G.
name: Sterzik, M.
name: Pantoja, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The search of close (a<=5 au) giant planet(GP) companions with radial velocity(RV) around young stars and the estimate of their occurrence rates is important to constrain the migration timescales. Furthermore, this search will allow the giant planet occurrence rates to be computed at all separations via the combination with direct imaging techniques. The RV search around young stars is a challenge as they are generally faster rotators than older stars of similar spectral types and they exhibit signatures of spots or pulsation in their RV time series. Specific analyses are necessary to characterize, and possibly correct for, this activity. Our aim is to search for planets around young nearby stars and to estimate the GP occurrence rates for periods up to 1000 days. We used the SOPHIE spectrograph to observe 63 A-M young (<400 Myr) stars. We used our SAFIR software to compute the RVs and other spectroscopic observables. We then combined this survey with the HARPS YNS survey to compute the companion occurrence rates on a total of 120 young A-M stars. We report one new trend compatible with a planetary companion on HD109647. We also report HD105693 and HD112097 as binaries, and we confirm the binarity of HD2454, HD13531, HD17250A, HD28945, HD39587, HD131156, HD 142229, HD186704A, and HD 195943. We constrained for the first time the orbital parameters of HD195943B. We refute the HD13507 single brown dwarf (BD) companion solution and propose a double BD companion solution. Based on our sample of 120 young stars, we obtain a GP occurrence rate of 1_{-0.3}^{+2.2}% for periods lower than 1000 days, and we obtain an upper limit on BD occurrence rateof 0.9_{-0.9}^{+2}% in the same period range. We report a possible lack of close (1
description: 32 pages, 22 figures
Αυτόματα με βάρη σε άπειρα αλφάβητα και άπειρες λέξεις
Creators: name: Βασιλειάδης, Αλέξανδρος Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Άπειρα αλφάβητα
Büchi αυτόματα με βάρη πάνω σε άπειρα αλφάβητα
Muller αυτόματα με βάρη πάνω σε άπειρα αλφάβητα
Ημιδακτύλιοι
ω-ρητές σειρές
MSO με βάρη
Infinite alphabets
Weighted variable Büchi automata
Weighted variable Muller automata
Semirings
ω-rational series
Weighted MSO

description: Σε αυτή την διπλωματική παρουσιαστήκαν τα Büchi αυτόματα με βάρη και τα Muller αυτόματα με βάρη πάνω σε άπειρα αλφάβητα. Αποδείξαμε ότι αυτές οι κλάσεις αυτομάτων είναι κλειστές με τις πράξεις του αθροίσματος, των scalar γινομένων, και του Hadamard γινομένου. Επίσης, το Cauchy γινόμενο μεταξύ μιας πεπερασμένης αναγνωρίσιμης σειράς και μιας άπειρης αναγνωρίσιμης σειράς και οι δύο πάνω σε ένα άπειρο αλφάβητο Σ και ένα totally commutative complete και totally idempotent ημιδακτύλιο Κ, είναι μια άπειρη αναγνωρίσιμη σειρά πάνω στο Σ και το Κ. Επιπρόσθετα, η ω-πράξη σε μια πεπερασμένη αναγνωρίσιμη proper σειρά η οποία ορίζεται πάνω σε ένα άπειρο αλφάβητο Σ και ένα totally commutative complete και totally idempotent ημιδακτύλιο Κ, είναι μια άπειρη αναγνωρίσιμη σειρά πάνω στο Σ και το Κ. Επιπλέον, θεωρήσαμε τις ω-ρητές σειρές πάνω σε άπειρα αλφάβητα και δείξαμε ένα θεώρημα τύπου Kleene-Schützenberger. Παρουσιάσαμε ακόμη μια μοναδιακή λογική δεύτερης τάξης με βάρη πάνω σε άπειρα αλφάβητα και άπειρες λέξεις, και εξετάσαμε την σχέση της με τα Büchi αυτόματα με βάρη πάνω σε άπειρα αλφάβητα. Τέλος, με την βοήθεια του Boolean ημιδακτυλίου μεταφέραμε τα περισσότερα αποτελέσματα στην κλάση των ω-αναγνωρισίμων γλωσσών πάνω σε άπειρα αλφάβητα
description: We introduce weighted Büchi automata and weighted Muller automata, over infinite alphabets. We prove that these classes of automata are closed under sum, scalar products, and Hadamard product over a totally commutative complete and totally idempotent semiring. Also, the Cauchy product between a finitary recognizable series and an infinitary recognizable series both over an infinite alphabet Σ and a totally commutative complete and totally idempotent semiring K, is an infinitary recognizable series over Σ and K. In addition, the ω-iteration of a finitary recognizable proper series over an infinite alphabet Σ and a totally commutative complete and totally idempotent semiring K, is an infinitary recognizable series over Σ and K. Moreover, we consider ω-rational series over an infinite alphabet and we state a Kleene-Schützenberger type theorem. We introduce a weighted monadic second-order logic over infinite alphabets, interpreted over infinite words and investigate its relation to weighted Büchi automata over infinite alphabets. Finally, using the Boolean semiring we derive most of the previous results to the class of ω-recognizable languages over infinite alphabets
Analyzing Trails in Complex Networks
Creators: name: Costa, Luciano da Fontoura
name: Rodrigues, Francisco Aparecido
name: Travieso, Gonzalo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Even more interesting than the intricate organization of complex networks are the dynamical behavior of systems which such structures underly. Among the many types of dynamics, one particularly interesting category involves the evolution of trails left by moving agents progressing through random walks and dilating processes in a complex network. The emergence of trails is present in many dynamical process, such as pedestrian traffic, information flow and metabolic pathways. Important problems related with trails include the reconstruction of the trail and the identification of its source, when complete knowledge of the trail is missing. In addition, the following of trails in multi-agent systems represent a particularly interesting situation related to pedestrian dynamics and swarming intelligence. The present work addresses these three issues while taking into account permanent and transient marks left in the visited nodes. Different topologies are considered for trail reconstruction and trail source identification, including four complex networks models and four real networks, namely the Internet, the US airlines network, an email network and the scientific collaboration network of complex network researchers. Our results show that the topology of the network influence in trail reconstruction, source identification and agent dynamics.
description: 10 pages, 16 figures. A working manuscript, comments and criticisms welcomed
Black hole entanglement entropy regularized in a freely falling frame
Creators: name: Jacobson, Ted
name: Parentani, Renaud
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the black hole horizon entanglement entropy S_E for a massless scalar field, first with a hard cutoff and then with high frequency dispersion, both imposed in a frame that falls freely across the horizon. Using WKB methods, we find that S_E is finite for a hard cutoff or super-luminal dispersion, because the mode oscillations do not diverge at the horizon and the contribution of high transverse momenta is cut off by the angular momentum barrier. For sub-luminal dispersion the entropy depends on the behavior at arbitrarily high transverse momenta. In all cases it scales with the horizon area. For the hard cutoff it is linear in the cutoff, rather than quadratic. This discrepancy from the familiar result arises from the difference between the free-fall frame and the static frame in which a cutoff is usually imposed. In the super-luminal case the entropy scales with a fractional power of the cutoff that depends on the index of the dispersion relation. Implications for the possible relation between regularized entanglement entropy and the Bekenstein-Hawking entropy are discussed.
description: 31 pages, 2 figures; v2: improvements to the presentation, typos fixed, reference added, version published in PRD
Additional file 1 of Side-by-side comparison of parent vs. technician-collected respiratory swabs in low-income, multilingual, urban communities in the United States
Creators: name: Chaves, Sandra S.
name: Park, Ju-Hyeong
name: Prill, Mila M.
name: Whitaker, Brett
name: Park, Reena
name: Chew, Ginger L.
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1.
Ο Lie δακτύλιος μιας υποομάδας των ΙΑ-αυτομορφισμών της ελεύθερης ομάδας πεπερασμένης βαθμίδας
Creators: name: Λουμπουτσκού, Χριστίνα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Lie δακτύλιος
Θεώρημα απαλοιφής Lazard
ελεύθερη ομάδα
Lie ring
Lazard elimination theorem
free group

description: Στην παρούσα διπλωματική εργασία θα γίνει ανάλυση κάποιων αποτελεσμάτων της διδακτορικής διατριβής της κας Σεβασλίδου. Ασχολούμαστε με τον σχετιζόμενο Lie δακτύλιο της Formanek-Procesi της ελεύθερης ομάδας πεπερασμένης βαθμίδας. Θα δούμε ότι αυτός είναι ισόμορφος με τον ελεύθερο Lie δακτύλιο πηλίκο L(X)/J, όπου J ένα ιδεώδες του L(X). Επίσης, θα βρούμε το αντίστοιχο ιδεώδες J στην περίπτωση της ελεύθερης αβελιανής ομάδας πεπερασμένης βαθμίδας. Η εύρεση του ιδεώδους J θα γίνει και στις δύο περιπτώσεις με τη βοήθεια του θεωρήματος απαλοιφής Lazard και της ανάλυσης της μεθόδου των Duchamp & Krob
description: In this thesis, we will present and analyse some results appeared at the doctoral thesis of Sevaslidou. Our main subject is the associated graded Lie ring of the Formanek-Procesi group of the free group of finite rank. We will see that the latter is isomorphic to the free quotient Lie ring L(X)/J, where J is an ideal of L(X). We will also find the ideal J for a free abelian group. For both cases, we will find J using Lazard decomposition and Duchamp & Krob's method. The proof of the isomorphism is given through group-theoretic results
Phonological elicitation: Glottal stops and ejectives
Creators: name: Sales, Henry
name: Bertet, Denis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Elicitation of words with word-final glottal stops (<'>) or uvular (), plain velar (), and palatalized velar () ejective stops, or that feature such phonemes in their San Ildefonso Ixtahuacán Mam cognates.
Fundamental bounds on the precision of iSCAT, COBRI and dark-field microscopy for 3D localization and mass photometry
Creators: name: Dong, Jonathan
name: Maestre, Dante
name: Conrad-Billroth, Clara
name: Juffmann, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Interferometric imaging is an emerging technique for particle tracking and mass photometry. Mass or position are estimated from weak signals, coherently scattered from nanoparticles or single molecules, and interfered with a co-propagating reference. In this work, we perform a statistical analysis and derive lower bounds on the measurement precision of the parameters of interest from shot-noise limited images. This is done by computing the classical Cramér-Rao bound for localization and mass estimation, using a precise vectorial model of interferometric imaging techniques. We then derive fundamental bounds valid for any imaging system, based on the quantum Cramér-Rao formalism. This approach enables a rigorous and quantitative comparison of common techniques such as interferometric scattering microscopy (iSCAT), Coherent Brightfield microscopy (COBRI), and dark-field microscopy. In particular, we demonstrate that the light collection geometry in iSCAT greatly increases the axial position sensitivity, and that the Quantum Cramér-Rao bound for mass estimation yields a minimum relative estimation error of $σ_m/m=1/(2\sqrt{N})$, where $N$ is the number of collected scattered photons.
Detection of coupling in Duffing oscillator systems
Creators: name: Brešar, Martin
name: Boškoski, Pavle
name: Horvat, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: In complex dynamical systems, the detection of coupling and its direction from observed time series is a challenging task. We study coupling in coupled Duffing oscillator systems in regular and chaotic dynamical regimes. By observing the conditional mutual information (CMI) based on the Shannon entropy, we successfully infer the direction of coupling for different system regimes. Moreover, we show that in the weak coupling limit the values of CMI can be used to infer the coupling parameters by computing the derivative of the conditional mutual information with respect to the coupling strength, called the information susceptibility. The complete numerical implementation is available at https://repo.ijs.si/mbresar/duffing-cmi.
description: 12 pages, 17 figures, accepted in journal Chaos: An Interdisciplinary Journal of Nonlinear Science
Perfect quantum-state synchronization
Creators: name: Czartowski, Jakub
name: Müller, Ronny
name: Zyczkowski, Karol
name: Braun, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the most general mechanisms that lead to perfect synchronization of the quantum states of all subsystems of an open quantum system starting from an arbitrary initial state. We provide a necessary and sufficient condition for such "quantum-state synchronization", prove tight lower bounds on the dimension of the environment's Hilbert space in two main classes of quantum-state synchronizers, and give an analytical solution for their construction. The functioning of the found quantum-state synchronizer of two qubits is demonstrated experimentally on an IBM quantum computer and we show that the remaining asynchronicity is a sensitive measure of the quantum computer's imperfection.
description: 10 pages, 4 figures
Imprinting Tunable $π$-Magnetism in Graphene Nanoribbons via Edge Extensions
Creators: name: Pizzochero, Michele
name: Kaxiras, Efthimios
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic carbon nanostructures are currently under scrutiny for a wide spectrum of applications. Here, we theoretically investigate armchair graphene nanoribbons patterned with asymmetric edge extensions consisting of laterally fused naphtho groups, as recently fabricated via on-surface synthesis. We show that an individual edge extension acts as a spin-$\frac{1}{2}$ center and develops a sizable spin-polarization of the conductance around the band edges. The Heisenberg exchange coupling between a pair of edge extensions is dictated by the position of the second naphtho group in the carbon backbone, thus enabling ferromagnetic, antiferromagnetic, or non-magnetic states. The periodic arrangement of edge extensions yields full spin-polarization at the band extrema, and the accompanying ferromagnetic ground state can be driven into non-magnetic or antiferromagnetic phases through external stimuli. Overall, our work reveals precise tunability of the $π$-magnetism in graphene nanoribbons induced by naphtho groups, thereby establishing these one-dimensional architectures as suitable platforms for logic spintronics.
Resolving the Causes of Ruin Problems by the 5 Precepts Village Project, Khon Kaen Province
Creators: name: Chakkree Sricharumedhiyan
Publisher: name: DR.KEN Institute of Academic Development and Promotion.
Year: 2021
Subjects: Five Precepts Village Project
Causes of ruin
Resolving

description: International Journal of Sociologies and Anthropologies Science Reviews (IJSASR), 1, 6, 1_16
Gravitational field of scalar lumps in higher-derivative gravity
Creators: name: Buoninfante, Luca
name: Miyashita, Yuichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the gravitational field sourced by localized scalar fields (lumps) in higher-derivative theories of gravity. By working in a static and spherically symmetric configuration, we find the linearized spacetime metrics generated by scalar lumps for several Lagrangians: the vanishing potential, i.e. free massive scalar field, a polynomial potential, and the tachyon potential in open string field theory. We perform the analysis for different theories of gravity: Einstein's general relativity, four-derivative gravity, and ghost-free nonlocal gravity. We discuss the limit of validity of our analysis and comment on possible future applications in the context of astrophysical compact objects.
description: 21 pages, 6 figures. V2: version accepted for publication in PRD
Παιγνιοποίηση του Κινητικού Ελέγχου και της Κινητικής Μάθησης σε άτομα με κινητικές διαταραχές
Creators: name: Φωτόπουλος, Δημήτριος Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: αποκατάσταση
κινητικός έλεγχος
παιγνιοποίηση
rehabilitation
motor control
gamification

description: Σκοπός της παρούσας διπλωματικής εργασίας, είναι η υλοποίηση μιας πλατφόρμας αξιοποίησης σύγχρονων διεπαφών με στόχο τη βελτίωση του κινητικού ελέγχου και της κινητικής μάθησης σε άτομα με κινητικές διαταραχές στα άνω άκρα. Με την παιγνιοποίηση της διαδικασίας της θεραπείας επιδιώκεται η συνεχής ενασχόληση του ασθενή με τις θεραπευτικές ασκήσεις χωρίς συναισθηματική κόπωση και η διατήρηση του κινήτρου του για το θεραπευτικό πρόγραμμα. Τα παραπάνω αναμένεται να έχουν ως αποτέλεσμα την αύξηση του αριθμού των επαναλήψεων και την καλύτερη αποδοτικότητα των θεραπευτικών προγραμμάτων, συνθήκες απαραίτητες για τη νευρο-ανάπλαση του εγκεφάλου (brain plasticity), που θα επιφέρει καλύτερα αποτελέσματα αποκατάστασης στον ασθενή. Η πλατφόρμα αυτή θα υλοποιηθεί με τη χρήση σύγχρονων τεχνολογικών διεπαφών όπως ανιχνευτές κίνησης (Leap Motion Controller, Myo Armband) και λογισμικά δημιουργίας τρισδιάστατων γραφικών (Unity 3d). Η χρήση αυτών παρέχει το πλεονέκτημα της καλύτερης παρακολούθησης της θεραπείας μέσω του όγκου των δεδομένων που παράγονται στα πλαίσια της. Απώτερος σκοπός είναι η δυνατότητα χρήσης της πλατφόρμας από τον ασθενή σε δικό του χώρο και η ασύγχρονη παρακολούθηση του θεράποντα από την εξέταση των δεδομένων του ασθενή και της ανάλυσης τους. Στα πλαίσια εκπόνησης της εργασίας δεν έγιναν δοκιμές με ασθενείς έτσι ώστε να γίνει έλεγχος υπό πραγματικές συνθήκες. Ωστόσο η πλατφόρμα δοκιμάστηκε με υγιείς ανθρώπους ούτως ώστε να επιβεβαιωθεί η λειτουργικότητα της και να συλλεχθούν σχόλια ανατροφοδότησης με στόχο τη βελτίωση της
description: The goal of this thesis is to implement a platform utilizing modern interfaces to improve motor control and motor learning on people with motor disorders in the upper limbs. The gamification of the process of the treatment aims at keeping the patient engaged and maintaining his motivation for the treatment regimen. The above are expected to result in an increase in the number of exercise repetitions and in a more efficient treatment. These conditions are vital for the process of neurorehabilitation and consequently, the patient’s faster and better recovery. This platform will be implemented using modern technological interfaces such as motion detectors (Leap Motion Controller, Myo Armband) and 3D graphics software (Unity 3d). Their use provides the advantage of a more thorough method of monitoring, through the volume of data generated within it. Further aim of this project is to bring the rehabilitation process in the patient’s own environment and provide asynchronous monitoring to the physician by examining the patient's data and analysis. During this project, no patient trials were performed in order for the platform to undergo real-time testing. However, we tested it with healthy subjects, to confirm its functionality and collect feedback for its improvement
Instability of square vortex lattice in d-wave superconductors is due to paramagnetic depairing
Creators: name: Hiasa, Norihito
name: Ikeda, Ryusuke
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Effects of the paramagnetic depairing on structural transitions between vortex lattices of a quasi two dimensional d-wave superconductor are examined. It is found that, in systems with Maki parameter $α_{\rm M}$ of order unity, a square lattice induced by a d-wave pairing is destabilized with {\it increasing} fields, and that a reentrant rhombic lattice occurs in higher fields. Further, a weak Fermi surface anisotropy competitive with the pairing symmetry induces another structural transition near $H_{c2}$. These results are consistent with the structure changes of the vortex lattice in CeCoIn$_5$ in ${\bf H} \parallel c$ determined from recent neutron scattering data.
description: Effects of thermal fluctuation were discussed additionally, and the title was slightly changed. Accepted for publication in Physical Review Letters
Additional file 4: of The EMIF-AD PreclinAD study: study design and baseline cohort overview
Creators: name: Konijnenberg, Elles
name: Carter, Stephen
name: ten Kate, Mara
name: den Braber, Anouk
name: Tomassen, Jori
name: Amadi, Chinenye
name: Wesselman, Linda
name: Nguyen, Hoang-Ton
name: van de Kreeke, Jacoba
name: Yaqub, Maqsood
name: Demuru, Matteo
name: Mulder, Sandra
name: Hillebrand, Arjan
name: Bouwman, Femke
name: Teunissen, Charlotte
name: SernĂŠ, Erik
name: Moll, Annette
name: Verbraak, Frank
name: Hinz, Rainer
name: Pendleton, Neil
name: Lammertsma, Adriaan
name: van Berckel, Bart
name: Barkhof, Frederik
name: Boomsma, Dorret
name: Scheltens, Philip
name: Herholz, Karl
name: Visser, Pieter
Publisher: name: figshare
Year: 2018
Subjects: Biochemistry
Medicine
Biotechnology
Chemical Sciences not elsewhere classified
Developmental Biology

description: Table S4. Biomarkers baseline. (DOCX 24Â kb)
La tension entre la société et l’individu dans cinq romans Stendhaliens
Creators: name: Ryu, Hyung Sook
Publisher: name: University of British Columbia
Year: 2008

description: In the five novels of Stendhal, the protagonists are a prey to conflicts between society and individual. Ambition for integration into society is replaced by repugnance to society, so that the protagonists experience ambivalence. Tension is created in this conflict, and the protagonists pursue self assertion. In the conflicts between society and the individual, the protagonists manifest ambivalence by complying sometimes with the reality principle and sometimes with the pleasure principle. For the purpose of self idealization, they conform to the rules of society, but, under certain circumstances, they abandon themselves to repressed instincts. The education of the protagonists intensifies ambivalence. The protagonists are able to perceive the discrepancy between the standards of society and personal desires because of their superior intelligence. The life of the protagonists can be described as alternation between integration into society and submission to personal needs. Experiencing this alternation, the protagonists realize their blindness and discover themselves. When relationships between parents and the protagonists are examined in the light of the theory of Marthe Robert, some protagonists conduct themselves aggressively or passively as bastards or foundlings, in agreement with the theory. But Lucien and Lamiel jar with the theory. The discordance could stem from the incompletion of the two novels as well as the exceptional aggressiveness of Lamiel as a female protagonist of the nineteenth century. The protagonists succeed in their integration into society under the protection of characters who play the role of surrogate father or mother while the protagonists are subjected to disgust facing the defects of society. But the protagonists meet characters who are capable of isolating them from the society. The characters express different views on life, not conforming to the common opinions of society. In the alienation from society, the protagonists feel uplifted and euphoric. In conclusion, the tension between society and the individual arises from the protagonists' pursuit of happiness. In the five novels of Stendhal, happiness consists in peace of mind, but not in attainment to power.
In-plane anisotropic quantum confinement effect in ultrasmall SnS sheets
Creators: name: Sarkar, Abdus Salam
name: Kumari, Anita
name: Anchala
name: Nakka, Nagaraju
name: Ray, Rajeev
name: Stratakis, Emmanuel
name: Pal, Suman Kalyan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Black phosphorus (BP) analogous tin(II) sulfide (SnS) has recently emerged as an attractive building block for electronic devices due to its highly anisotropic response. Two-dimensional (2D) SnS has shown to exhibit in-plane anisotropy in optical and electrical properties. However, the limitations in growing ultrasmall structures of SnS hinder the experimental exploration of anisotropic behavior in low dimension. Here, we present an elegant approach of synthesizing highly crystalline nanometer-sized SnS sheets. Ultrasmall SnS exhibits two distinct valleys along armchair and zig-zag directions due to in-plane structural anisotropy like bulk SnS. We show that in such SnS nanosheet dots, the band gaps corresponding to two valleys are increased due to quantum confinement effect. We particularly observe that SnS quantum dots (QDs) show excitation energy dependent photoluminescence (PL), which originates from the two nondegenerate valleys. Our work may open up an avenue to show the potential of SnS QDs for new functionalities in electronics and optoelectronics.