cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Water vapour masers in long-period variable stars II. The semi-regular variables R Crt and RT Vir
Creators: name: Brand, J.
name: Engels, D.
name: Winnberg, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Within the 'Medicina/Effelsberg H2O maser monitoring program' we have observed the maser emission of R Crt and RT Vir for more than two decades. To get insight in the distribution and longevity of maser spots in the circumstellar envelopes, we have collected interferometric data, taken in the same period, from the literature. We confirm short-time variations of individual maser features on timescales of months to up to 1.5 years. Also decade-long variations of the general brightness level independent from individual features were seen in both stars. These are due to brightness variations occurring independently from each other in selected velocity ranges, and are independent of the optical lightcurves. Expected drifts in velocity of individual features are usually masked by blending. However, in RT Vir we found an exceptional case of a feature with a constant velocity over 7.5 years (<0.06 km/s/yr). We attribute the long-term brightness variations to the presence of regions with higher-than-average density in the stellar wind, which host several clouds which emit maser radiation on the short time scales. These regions typically need ~20 years to cross the H2O maser shell, where the right conditions to excite H2O masers are present. The constant velocity feature (11 km/s) is likely to come from a single maser cloud, which moved through about half of RT Vir's H2O maser shell without changing velocity. From this we infer that its path was located in the outer part of the H2O maser shell, where RT Vir's stellar wind apparently has already reached its terminal outflow velocity. This conclusion is corroborated by the observation that the highest H2O maser outflow velocity in RT Vir approaches the terminal outflow velocity as given by OH and CO observations. This is generally not observed in other semi-regular variable stars.
description: 34 pages, 14 figures; accepted by Astronomy & Astrophysics
Ψυχοκοινωνικά χαρακτηριστικά παιδιών με Μαθησιακές Δυσκολίες:
Creators: name: Νείλα, Αθηνά Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ψυχοκοινωνικά Χαρακτηριστικά
Ψυχολογική Εξέλιξη
Κοινωνικές σχέσεις
psychosocial features
psychological development
social relationships

description: Ο σκοπός της παρούσας έρευνας είναι να ελέγξει την υπόθεση αν οι ΜΔ δημιουργούν στους μαθητές συγκεκριμένα ψυχοκοινωνικά χαρακτηριστικά, η οποία φαίνεται να επιβεβαιώνεται από ποικίλες έρευνες. Χρησιμοποιώντας τις απαντήσεις εννέα εκπαιδευτικών για δύο ομάδες παιδιών (60 στο σύνολό τους) – η πρώτη ως ομάδα μαθητών με ΜΔ και η δεύτερη ως ομάδα μαθητών χωρίς ΜΔ – οι οποίες αναλύθηκαν μέσα από ένα ποσοτικό περιγραφικό πλαίσιο αναδείχτηκαν τα εξής κύρια δύο ευρήματα: (α) στη διδακτική πράξη οι μαθητές με ΜΔ υπολείπονται σημαντικά σε σχέση με τους μαθητές χωρίς ΜΔ όσον αφορά τη συμμετοχή τους στη μαθησιακή διαδικασία και στην αποδοχή τους από τους συνομηλίκους και (β) στις κοινωνικές σχέσεις οι μαθητές με ΜΔ, τόσο στις κοινωνικές δεξιότητες όσο και στην αποδοχή τους από τους άλλους, δεν φαίνεται να διαφέρουν από τους μαθητές χωρίς ΜΔ. Τα ευρήματα αυτά δεν επιβεβαιώνουν την βασική υπόθεση εγείροντας το ερώτημα κατά πόσο οι ΜΔ ως αίτιο και συγκεκριμένα ψυχοκοινωνικά χαρακτηριστικά που υποτίθεται ότι τις συνοδεύουν μπορούν να θεωρηθούν ως μία καθορισμένη και αποδεδειγμένη αιτιακή σχέση.
description: The purpose of this research is to test the hypothesis, which seems to be confirmed by various studies, whether learning difficulties cause specific psychosocial features to students. Using the answers of nine teachers for two groups of students (60 in total) – the first group as students with learning difficulties and the second group as students without learning difficulties – which were analyzed through a quantitative descriptive framework, two main findings emerged: (a) in learning practice students with learning difficulties seem to differ significantly compared with students without learning difficulties in their participation in learning process and their acceptance by their peers and (b) in their social relationships (social skills and their acceptance of the others) students with learning difficulties do not seem to differ from students without learning difficulties. These findings, which do not support the above hypothesis, raise the question of whether learning difficulties as a cause and the specific psychosocial features that are supposed to accompany them constitute a predetermined and a proven causal relation.
Addressing the Challenges of Big Data - Strategies, Solutions, and Implementation Approaches
Creators: name: Siddiqui, Muhammad Rawish
Publisher: name: Zenodo
Year: 2024

description: Big Data has revolutionized how organizations across industries handle vast quantities of information, enabling valuable insights that can drive business growth. However, with these advancements come numerous challenges, including data management complexities, security concerns, and the integration of various technologies. This paper discusses the overarching challenges in Big Data and provides a strategic framework to resolve them. By understanding key strategic points, methodology, use cases, and implementation steps, organizations can effectively navigate these challenges, ensuring the successful activation of Big Data initiatives. The paper also highlights tools and technologies essential to Big Data operations, potential risks, and mitigation strategies.
Διαδρομές Πολιτισμού – Πρόταση για έναν Λογοτεχνικό Περίπατο στη Θεσσαλονίκη
Creators: name: Χαλινίδου-Βαγγέλα, Φανή Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Διαδρομές Πολιτισμού
Διαχείριση Πολιτιστικής Κληρονομίας
Χρόνης Μίσσιος
Cultural Routes
Cultural Heritage Management
Museology
Chronis Missios

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η θεωρητική ανάλυση και τεκμηρίωση των διαδρομών πολιτισμού με ιδιαίτερη έμφαση στην υποκατηγορία των λογοτεχνικών περιπάτων ως σημαντικό κομμάτι της διαχείρισης της πολιτισμικής κληρονομιάς καθώς και η παρουσίαση μιας πρότασης για ένα λογοτεχνικό μονοπάτι στην πόλη της Θεσσαλονίκης. Η εργασία έχει σκοπό να προωθήσει και να αναδείξει τις διαδρομές πολιτισμού ως μία συμφέρουσα πρακτική προσέγγισης της πολιτιστικής κληρονομιάς τόσο σε οικονομικό επίπεδο όσο και σε ερμηνευτικό-εκπαιδευτικό. Η πρόταση που διατυπώνεται βασίζεται στο έργο και τη ζωή του Χρόνη Μίσσιου και επιδιώκει την ανάδειξη της πολιτιστικής κληρονομιάς της Θεσσαλονίκης, την γνωριμία της κοινωνικής της ιστορίας του δευτέρου μισού του 20ού αιώνα καθώς και στην οικειοποίηση της πόλης από τους κατοίκους της ανοίγοντάς τους ένα παράθυρο στο παρελθόν της και ταυτόχρονα προσφέροντάς τους σημεία σύνδεσης –νοητικά και υλικά- με το δικό τους παρόν. Στο πρώτο μέρος της εργασίας παρουσιάζονται οι ρίζες, η εξέλιξη και η σύγχρονη τυπολογία της πρακτικής αυτής ενώ γίνεται και ο συσχετισμός της με έννοιες όπως η επικοινωνία, η αυθεντικότητα και η εκπαίδευση. Στο δεύτερο μέρος παρουσιάζονται ο μουσειολογικός προγραμματισμός και ο μουσειολογικός σχεδιασμός της πρότασης σε επίπεδο προμελέτης.
description: The subject of the present dissertation thesis is the theoretical analysis/context and documentation of cultural routes emphasizing to the literary routes as an important part of cultural heritage management and also a proposal for a literary trail in Thessaloniki. The thesis aims to promote and highlight the cultural routes as a viable approach of cultural heritage both in economic and interpretive terms. The core of the proposal is the life and work of Chronis Missios and its aim is the display of Thessaloniki’s social history of the second half of the 20th century, the promotion of her cultural heritage and the re-appropriation of the city by its residents by opening them a window into the city’s past while offering connection points, both conceptual and material, with their own present. The first part presents the origins, the evolution and the typology of cultural routes as well as the fundamental concepts of communication, authenticity and pedagogy in literary tourism. The second part presents the museological programming and conceptual design of the proposal in a preliminary phase.
description: Σε συνεργασία με το Παιδαγωγικό Τμήμα Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Dipole Oscillations of a Bose-Einstein Condensate in Presence of Defects and Disorder
Creators: name: Albert, M.
name: Paul, T.
name: Pavloff, N.
name: Leboeuf, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider dipole oscillations of a trapped dilute Bose-Einstein condensate in the presence of a scattering potential consisting either in a localized defect or in an extended disordered potential. In both cases the breaking of superfluidity and the damping of the oscillations are shown to be related to the appearance of a nonlinear dissipative flow. At supersonic velocities the flow becomes asymptotically dissipationless.
description: 4 pages, 4 figures
Disconnecting a Traversable Wormhole: Universal Quench Dynamics in Random Spin Models
Creators: name: Zhou, Tian-Gang
name: Pan, Lei
name: Chen, Yu
name: Zhang, Pengfei
name: Zhai, Hui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Understanding strongly interacting quantum matter and quantum gravity are both important open issues in theoretical physics, and the holographic duality between quantum field theory and gravity theory nicely brings these two topics together. Nevertheless, direct connections between gravity physics and experimental observations in quantum matter are still rare. Here we utilize the gravity physics picture to understand quench dynamics experimentally observed in a class of random spin models realized in several different quantum systems, where the dynamics of magnetization are measured after the external polarization field is suddenly turned off. Two universal features of the magnetization dynamics, namely, a slow decay described by a stretched exponential function and an oscillatory behavior, are respectively found in different parameter regimes across different systems. This work addresses the issues of generic conditions under which these two universal features can occur, and we find that a natural answer to this question emerges in the gravity picture. By the holographic duality bridged by a model proposed by Maldacena and Qi, the quench dynamics after suddenly turning off the external polarization field is mapped to disconnecting an eternal traversable wormhole. Our studies show that insight from gravity physics can help unifying different experiments in quantum systems.
description: 9 pages, 4 figures + supplementary
Universality in unitary random matrix ensembles when the soft edge meets the hard edge
Creators: name: Claeys, Tom
name: Kuijlaars, Arno B. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 15A52, 34M55, 35Q15

description: Unitary random matrix ensembles Z_{n,N}^{-1} (\det M)^alpha exp(-N Tr V(M)) dM defined on positive definite matrices M, where alpha > -1 and V is real analytic, have a hard edge at 0. The equilibrium measure associated with V typically vanishes like a square root at soft edges of the spectrum. For the case that the equilibrium measure vanishes like a square root at 0, we determine the scaling limits of the eigenvalue correlation kernel near 0 in the limit when n, N tend to infinity such that n/N - 1 = O(n^{-2/3}). For each value of alpha > -1 we find a one-parameter family of limiting kernels that we describe in terms of the Hastings-McLeod solution of the Painleve II equation with parameter alpha + 1/2.
description: 19 pages, 2 figures, one remark and four references added, typos corrected
Supermassive black hole formation during the assembly of pre-galactic discs
Creators: name: Lodato, Giuseppe
name: Natarajan, Priya
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we discuss the evolution of gravitationally unstable pre-galactic discs that result from the collapse of haloes at high redshift $z \approx 10$ or so, which have not yet been enriched by metals. In cases where molecular hydrogen formation is suppressed the discs are maintained at a temperature of a few thousand degrees Kelvin. However, when molecular hydrogen is present cooling can proceed down to a few hundred degrees Kelvin. Analogous to the case of the larger scale proto-galactic discs, we assume that the evolution of these discs is mainly driven by angular momentum redistribution induced by the development of gravitational instabilities in the disc. We also properly take into account the possibility of disc fragmentation. We thus show that this simple model naturally predicts the formation of supermassive black holes in the nuclei of such discs and provides a robust determination of their mass distribution as a function of halo properties. We estimate that roughly 5% of discs resulting from the collapse of haloes with $M\approx 10^7 M_{\odot}$ should host a massive black hole with a mass $M_{\rm BH}\approx 10^5 M_{\odot}$. We confirm our arguments with time-dependent calculations of the evolution of the surface density and of the accretion rate in these primordial discs. This mechanism offers an efficient way to form seed black holes at high redshift. The predicted masses for our black hole seeds enable the comfortable assembly of $10^9 M_{\odot}$ black holes powering the luminous quasars detected by the Sloan Digital Sky Survey at $z = 6$ for a concordance cosmology. (abridged)
description: 12 pages, 8 figures, submitted to MNRAS
Σχέση της παιδαγωγικής αξιολόγησης και της γλωσσικής επάρκειας και επίδοσης σε μαθητές με μαθησιακές δυσκολίες.:
Creators: name: Μακρίδου, Ιωάννα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: αξιολόγηση με βάση το αναλυτικό πρόγραμμα
διακύμανση ικανότητας- επίδοσης
δυσκολίες ανάγνωσης και γραφής
curriculum-based assesment
ability-performance variation
reading and writing difficulties

description: Στο σύγχρονο γνωσιοκεντρικό σχολείο το μαθησιακό δυναμικό των μαθητών αξιολογείται μονομερώς με κριτήριο το βαθμό ανταπόκρισης τους στην παρεχόμενη διδασκαλία. Η παρούσα μελέτη επιχειρεί να διερευνήσει τη σχέση μεταξύ της παιδαγωγικής αξιολόγησης των μαθητών με μαθησιακές δυσκολίες και της γλωσσικής τους επάρκειας και επίδοσης. Η έρευνα πραγματοποιήθηκε σε 11 δημοτικά σχολεία επαρχιακής πόλης του Νομού Πέλλης και συμμετείχαν 50 μαθητές τετάρτης και πέμπτης δημοτικού, οι οποίοι, σύμφωνα με την αξιολόγηση των δασκάλων τους με το κριτήριο LDDI, έχουν ή πιθανόν να έχουν μαθησιακές δυσκολίες. Με βάση τα δύο προφίλ, οι μαθητές χωρίστηκαν στις ομάδες της ένδειξης και της πιθανότητας μαθησιακών δυσκολιών και συγκρίθηκαν ως προς την γλωσσική τους επίδοση στο κριτήριο Λ-α-Τ-ω και σε άτυπο τεστ. Σύμφωνα με τα ευρήματα της έρευνας α) υπάρχει απόκλιση μεταξύ της παιδαγωγικής αξιολόγησης και της γλωσσικής επάρκειας- επίδοσης των μαθητών με μαθησιακές δυσκολίες και β) η επίδοση των μαθητών στο τεστ δεν συσχετίζεται με τη γλωσσική τους επάρκεια.
description: In modern knowledge-based school learning potential of students is being assessed unilaterally, based on the response of the provided teaching. The current study attemps to investigate the relationship between pedagogical assessment of students with learning disabilities and their linguistic competence and perfomance. The research took place in 11 primary schools in a town of the Prefecture of Pella and involved 50 fourth and fifth grade students, who according to their teachers' evaluation resulting from the LDDI criterion, have or likely to have learning disabilities. Based on the two profiles, students were divided in groups of indication and probability of learning difficulties and were compared in their linguistic perfomance in Λ-α-Τ-ω criterion and achievement test. According to the findings a)there is a divergence between pedagogical assessment and linguistic competence- performance of students with learning disabilities and b)no correlation found between students' perfomance on the test and their linguistic competence.
Faint Supernovae and Supernova Impostors: Case studies of SN2002kg/NGC2403-V37 and SN 2003gm
Creators: name: Maund, J. R.
name: Smartt, S. J.
name: Kudritzki, R. -P.
name: Pastorello, A.
name: Nelemans, G.
name: Bresolin, F.
name: Patat, F.
name: Gilmore, G. F.
name: Benn, C. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Photometric and spectroscopic observations of the faint Supernovae (SNe) 2002kg and 2003gm, and their precursors, in NGC 2403 and NGC 5334 respectively, are presented. The properties of these SNe are discussed in the context of previously proposed scenarios for faint SNe: low mass progenitors producing under-energetic SNe; SNe with ejecta constrained by a circumstellar medium; and outbursts of massive Luminous Blue Variables (LBVs). The last scenario has been referred to as ``Type V SNe'', ``SN impostors'' or ``fake SNe.'' The faint SN 2002kg reached a maximum brightness of $\mathrm{M_{V}=-9.6}$, much fainter than normal type II SNe. The precursor of SN 2002kg is confirmed to be, as shown in previous work, the LBV NGC2403-V37. Strong $\mathrm{Fe II}$ lines are observed in the spectra of SN 2002kg, similar to both the LBV NGC2363-V1 and the type IIn SN 1995G. The spectrum of SN 2002kg does show strong resolved $\mathrm{[N II]}$ at $λλ$6549,6583\ang. The identified progenitor of SN 2003gm is a bright yellow star, consistent with a F5-G2 supergiant. SN 2003gm, at the epoch of discovery, was of similar brightness to the possible fake SN 1997bs. Photometrically SN 2003gm shows the same decrease in brightness, over the same time period as SN 1997bs. The early time spectra of SN 2003gm are dominated by Balmer emission lines, which at the observed resolution, appear similar to SN 2000ch. On the basis of the post-discovery photometric and spectroscopic observations presented here we suggest that SN 2003gm is a similar event to SN 1997bs. The presence of strong $\mathrm{[N II]}$ lines, near $\mathrm{Hα}$, is suggested as a possible means of identifying objects such as SN 2002kg/NGC2403-V37 as being LBVs - although not as a general classification criterion of all LBVs masquerading as SNe (abridged).
description: 17 pages, 17 figures (4 jpg), MNRAS accepted, 4 typos corrected
A framework for validation of the use of performance assessment in science
Creators: name: Bartley, Anthony William
Publisher: name: University of British Columbia
Year: 2009

description: The assessment of learning in school science is important to the students, educators, policy makers, and the general public. Changes in curriculum and instruction in science have led to greater emphasis upon alternative modes of assessment. Most significant of these newer approaches is “performance assessment”, where students manipulate materials in experimental situations. Only recently has the development of performance assessment procedures, and the appropriate strategies for interpreting their results, received substantial research attention. In this study, educational measurement and science education perspectives are synthesized into an integrated analysis of the validity of procedures, inferences and consequences arising from the use of performance assessment. The Student Performance Component of the 1991 B.C. Science Assessment is offered as an example. A framework for the design, implementation, and interpretation of hands-on assessment in school science is presented, with validity and feasibility considered at every stage. Particular attention is given to a discussion of the influence of construct labels upon assessment design. A model for the description of performance assessment tasks is proposed. This model has the advantage of including both the science content and the science skill demands for each task. The model is then expanded to show how simultaneous representation of multiple tasks enhances the ability to ensure adequate sampling from appropriate content domains. The main conclusion of this validation inquiry is that every aspect of performance assessment in science is influenced by the perspective towards learning in science that permeates the assessment, and that this influence must be considered at all times. Recommendations are made for those carrying out practical assessments, as well as suggestions of areas that invite further research.
New-Type Hoeffding's Inequalities and Application in Tail Bounds
Creators: name: Fan, Pingyi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistics Theory (math.ST)
subject: Artificial Intelligence (cs.AI)
subject: Information Theory (cs.IT)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: It is well known that Hoeffding's inequality has a lot of applications in the signal and information processing fields. How to improve Hoeffding's inequality and find the refinements of its applications have always attracted much attentions. An improvement of Hoeffding inequality was recently given by Hertz \cite{r1}. Eventhough such an improvement is not so big, it still can be used to update many known results with original Hoeffding's inequality, especially for Hoeffding-Azuma inequality for martingales. However, the results in original Hoeffding's inequality and its refinement one by Hertz only considered the first order moment of random variables. In this paper, we present a new type of Hoeffding's inequalities, where the high order moments of random variables are taken into account. It can get some considerable improvements in the tail bounds evaluation compared with the known results. It is expected that the developed new type Hoeffding's inequalities could get more interesting applications in some related fields that use Hoeffding's results.
description: 8 pages, 1 figure
Open-Set Hypothesis Transfer with Semantic Consistency
Creators: name: Feng, Zeyu
name: Xu, Chang
name: Tao, Dacheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Unsupervised open-set domain adaptation (UODA) is a realistic problem where unlabeled target data contain unknown classes. Prior methods rely on the coexistence of both source and target domain data to perform domain alignment, which greatly limits their applications when source domain data are restricted due to privacy concerns. This paper addresses the challenging hypothesis transfer setting for UODA, where data from source domain are no longer available during adaptation on target domain. We introduce a method that focuses on the semantic consistency under transformation of target data, which is rarely appreciated by previous domain adaptation methods. Specifically, our model first discovers confident predictions and performs classification with pseudo-labels. Then we enforce the model to output consistent and definite predictions on semantically similar inputs. As a result, unlabeled data can be classified into discriminative classes coincided with either source classes or unknown classes. Experimental results show that our model outperforms state-of-the-art methods on UODA benchmarks.
Σύγκριση της Χρυσής Αυγής με το Αγγλικό National Front:
Creators: name: Σαμανίου, Αντωνία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: φασισμός
άκρα δεξιά
Χρυσή Αυγή
fascism
far right
Golden Dawn

description: Η παρούσα διπλωματική εργασία ασχολείται με τη σύγκριση δύο ακροδεξιών κομμάτων, της Χρυσής Αυγής και του Βρετανικού Εθνικού Μετώπου. Επιχειρούμε μέσα από τα χαρακτηριστικά των δύο κομμάτων, να αποσαφηνίσουμε τον ορισμό της έννοιας του φασισμού. Επιλέγονται συγκεκριμένα τα δύο κόμματα αυτά, γιατί αν και ιδρύθηκαν σε δύο διαφορετικές περιόδους και χώρες, μοιράζονται πολλά κοινά αλλά αντίστοιχα έχουν και διαφορές. Κυριότερη διαφορά, είναι ότι το βρετανικό κόμμα, είχε να αντιμετωπίσει την πολύ ισχυρή αντιρατσιστική και αντιφασιστική δράση, η οποία γίνεται διδακτική για την ελληνική περίπτωση. Επιπλέον, μελετάμε τη Χρυσή Αυγή και βλέπουμε γιατί σε μία συγκεκριμένη χρονική περίοδο, καταλήγει να σημειώνει σημαντική άνοδο. Αντίστοιχα, βλέπουμε τα χαρακτηριστικά του Βρετανικού Εθνικού Μετώπου και την άνοδο που σημειώνει σε μία συγκεκριμένη περίοδο, κατά τη δεκαετία του 1970 αλλά και πώς εύκολα αποδυναμώνεται. Τέλος, δίνονται κάποιες λύσεις για την αντιμετώπιση της ανόδου των φασιστικών ομάδων ή κομμάτων.
description: This thesis is associated with the comparison of two far left political parties, the greek Golden Dawn and the british Nationa Front. Within their features, we attempt to define the term fascism. These two political parties are chosen to be compared, because although they were established in two different countries and chronological periods, they both share common characteristics and differents as well. The most basic different that they have, is that the N.F. had to confront the strong antinazi and antiracist organizations, which is didactic for the greek case. Moreover, we studied the G.D. and we noticed, how in a particular period became a powerful party. The same with the N.F., we study its features and its rise within a specific period, that is in 1970, but we also noticed how easily can lose its power. In conclusion, we give some resolutions to the rise of such organizations or parties.
Codes and data for "Global variability in atmospheric new particle formation mechanisms"
Creators: name: Mao, Lizhuo
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 370103
subject: Atmospheric aerosols
classificationCode: 370104
subject: Atmospheric composition, chemistry and processes

description: This repository contains the model codes and data associated with the paper titled "Global variability in atmospheric new particle formation mechanisms". Descriptions of the model, along with instructions for running it, are available in the document titled "Introduction to the model.docx". "E3SM-Private.zip" contains the codes and run scripts of the model, "sample_data.zip" contains sample datasets used to test the model, and "source_data_for_figures_in_manuscript.zip" contains the source data for the figures present in the manuscript.
Effect of quantizing magnetic field on the inner crusts of hot Neutron Stars
Creators: name: Nandi, Rana
name: Mukhopadhyay, Somnath
name: Banik, Sarmistha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the present work we study the effects of strongly quantizing magnetic fields and finite temperature on the properties of inner crusts of hot neutron stars. The inner crust of a neutron star contains neutron-rich nuclei arranged in a lattice and embedded in gases of free neutrons and electrons. We describe the system within the Wigner-Seitz (WS) cell approximation. The nuclear energy is calculated using Skyrme model with SkM* interaction. To isolate the properties of nuclei we follow the subtraction procedure presented by Bonche, Levit and Vautherin, within the Thomas-Fermi approximation. We obtain the equilibrium properties of inner crust for various density, temperatures and magnetic fields by minimizing the free energy of the WS cell satisfying the charge neutrality and $β-$equilibrium conditions. We infer that at a fixed baryon density and temperature, strong quantizing magnetic field reduces the cell radii, neutron and proton numbers in the cell compared with the field free case. However, the nucleon number in the nucleus increases in presence of magnetic field. The free energy per nucleon also decreases in magnetized inner crust. On the other hand, we find that finite temperature tends to smear out the effects of magnetic field. Our results can be important in the context of $r-$process nucleosynthesis in the binary neutron star mergers.
description: 6 figures
Fréchet-Urysohn fans in free topological groups
Creators: name: Banakh, Taras
name: Repovš, Dušan
name: Zdomskyy, Lyubomyr
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 18B30; 22A05; 54C20; 54E35; 54F15

description: In this paper we answer the question of T. Banakh and M. Zarichnyi constructing a copy of the Fréchet-Urysohn fan $S_\w$ in a topological group $G$ admitting a functorial embedding $[0,1]\subset G$. The latter means that each autohomeomorphism of $[0,1]$ extends to a continuous homomorphism of $G$. This implies that many natural free topological group constructions (e.g. the constructions of the Markov free topological group, free abelian topological group, free totally bounded group, free compact group) applied to a Tychonov space $X$ containing a topological copy of the space $\IQ$ of rationals give topological groups containing $S_\w$.
Συμμετοχή σε αυτοκτονία:
Creators: name: Μυτιλέκα, Βικτώρια Αναστασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: έγκλημα
συμμετοχή
αυτοκτονία
crime
participation
suicide

description: Το άρθρο 301 του Ποινικού Κώδικα, που αναφέρεται στη συμμετοχή σε αυτοκτονία, φαίνεται να τυποποιεί ως άδικη πράξη τη συμμετοχή σε μία μη άδικη πράξη, την αυτοκτονία ενός προσώπου. Στην παρούσα, αφού κάνουμε μία σύντομη ιστορική αναδρομή, εξετάσαμε τα σημαντικότερα κατά τη γνώμη μας ερωτήματα που προκύπτουν, όπως, το εάν η αυτοκτονία είναι ή όχι άδικη πράξη, το εάν υπάρχει λόγος που να δικαιολογεί την τυποποίηση της συμμετοχής σε αυτοκτονία, το τι περιεχόμενο θα δοθεί στους όρους της κατάπεισης και της παροχής βοήθειας κατά την αυτοκτονία. Επιπλέον, εξετάζουμε τα επιμέρους στοιχεία του εγκλήματος και κάποια ειδικά ζητήματα, όπως, το εάν το έγκλημα μπορεί να τελεστεί με παράλειψη, την περίπτωση της συλλογικής αυτοκτονίας, ζητήματα σχετικά με τον καταλογισμό του αυτόχειρα και τη σχέση του εγκλήματος με άλλα εγκλήματα. Τέλος, κάνουμε τη δυσάρεστη διαπίστωση των ολοένα και αυξανόμενων περιστατικών αυτοκτονίας τον τελευταίο καιρό, παρά την ομολογουμένως σπάνια νομολογιακή εφαρμογή της διάταξης.
description: The article 301 of the Penal Code that refers to the participation in suicide seems to consider as a crime the participation in an act that is not a crime, the suicide of a human being. In this paper, after we talk about the history of this article, we consider some of the most in our opinion important issues, such as if the act of suicide is or it is not a crime, why the law considers as a crime the participation in a suicide and what the terms convincing and giving help in a suicide mean. We also examine the most important clues of the article and some more specific issues, such as if there is a possibility that this crime is committed by omission, the case in which many people commit suicide together, issues that have to do with the guilt of the person who commits suicide and the relationship that this crime has with other crimes. Finally, we observe that more and more people commit suicide, even though the courts usually do not deal with them.
Ο έρωτας και τα ερωτικά μοτίβα στην ελληνιστική ποίηση του 3ου αιώνα και στον Παρθένιο:
Creators: name: Γάκη, Μαρία Ευαγγέλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ελληνιστική ποίηση
Έρωτας
Παρθένιος
Hellenistic poetry
Love
Parthenius

description: Σκοπός της μεταπτυχιακής εργασίας είναι η μελέτη του έρωτα στην ελληνιστική ελεγεία και το επύλλιο του τρίτου αιώνα σε σχέση με το έργο του Παρθένιου. Σε κάθε κεφάλαιο εντοπίζονται και αναλύονται τα ερωτικά μοτίβα και η συχνότητα τους στους ελληνιστικούς ποιητές Φιλητά, Ερμησιάνακτα, Αλέξανδρο Αιτωλό, Φανοκλή, Ευφορίωνα. Στην συνέχεια εξετάζονται τα ερωτικά μοτίβα στον Παρθένιο, συγγραφέα του πρώτου αιώνα, στις ερωτικές ιστορίες του οποίου διασώζονται πολλές πληροφορίες για το έργο των παραπάνω ποιητών. Παράλληλα με την μελέτη των ερωτικών μοτίβων ερευνάται η αντιμετώπιση της σχέσης των δύο φύλων από τον κάθε ποιητή με βάση τα κοινωνικά δεδομένα της ελληνιστικής εποχής. Στο τελευταίο κεφάλαιο πραγματοποιείται σύγκριση των ποιητών, ώστε να εξαχθούν συμπεράσματα σχετικά με τον ρόλο του έρωτα ως λογοτεχνικού θέματος κατά την ελληνιστική περίοδο και την επικρατέστερη απεικόνιση του ως νοσηρής δύναμης με καταστροφικές διαστάσεις. Από την παρουσίαση προκύπτουν επίσης συμπεράσματα για τα πιο δημοφιλή ερωτικά μοτίβα στην ελληνιστική ποίηση αλλά και για την απεικόνιση του ρόλου των δύο φύλων, η οποία είναι αντιπροσωπευτική των κοινωνικών αντιλήψεων της εποχής.
description: The aim of this dissertation is the study of love in the hellenistic elegy and the epyllion of the third century in relation to Parthenius. In each chapter there is a detection and analysis of the love motifs and their frequency in the following hellenistic poets: Philitas, Hermesianax, Alexander Aetolus, Phanocles, Euphorion. In addition, the love motifs are also investigated in Parthenius, a first century poet, in whose love stories a lot of information survives about the work of the above poets. In the meantime there is an investigation in the treatment of the relationship between the two genders by those poets, according to the social concepts of the hellenistic era. In the last chapter there is a comparison among the poets, which leads to conclusions about the role of love as a subject of literature in the hellenistic era and its prominent representation as a morbid power of destructive dimensions. Conclusions about the most popular love motifs in hellenistic poetry and about the role of the two genders according to the social concepts of this period will be derived as well from the whole study.
Tracking Ensemble Performance on Touch-Screens with Gesture Classification and Transition Matrices
Creators: name: Martin, Charles
name: Gardner, Henry
name: Swift, Ben
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: H.5.5; H.5.3

description: We present and evaluate a novel interface for tracking ensemble performances on touch-screens. The system uses a Random Forest classifier to extract touch-screen gestures and transition matrix statistics. It analyses the resulting gesture-state sequences across an ensemble of performers. A series of specially designed iPad apps respond to this real-time analysis of free-form gestural performances with calculated modifications to their musical interfaces. We describe our system and evaluate it through cross-validation and profiling as well as concert experience.
Lived experience in the initial period of adaptation: a longitudinal multi-case study of the experience of recent immigrant students at a Canadian secondary school
Creators: name: Mansfield, Earl Alfred
Publisher: name: University of British Columbia
Year: 2009

description: While educators have recognized that students from other countries often face traumatic experiences in their initial period of adaptation to the receiving country's schools and society, little attention has been devoted to understanding the nature or educational significance of these experiences. Traditionally, educators have equated adaptation difficulties with host language deficits, while other, possibly more consequential dimensions of the adaptation experience have gone unrecognized, and have not been represented in educational policy and funding decisions. Accordingly, this study is directed toward providing a more comprehensive understanding of the adaptation experiences of adolescent students who have recently arrived in Canada from other countries, and addresses a critical need for understanding these experiences from the perspectives of the students themselves. Inquiry is advanced within a descriptive, exploratory, and explanatory study which predominantly utilizes a phenomenological, qualitative methodology. The study's principal methodology builds upon Edmund Husserl's philosophical foundation by incorporating the existential perspectives of Maurice Merleau-Ponty, the life-world social dimensions of Alfred Schutz, and the historical-contextual and interpretive elements of Max van Manen's hermeneutic phenomenology. Fieldwork occurred over a six month period in a suburban Canadian secondary school. Study findings and recommendations derive from analysis of interviews, observations, and self-reports of three male and three female grade 10 students who arrived in Canada not more than 20 months prior to the outset of the study. Initial adaptation experiences of study participants point to three principal findings. The study's finding that despite adaptation challenges, students from abroad often achieve at or above receiving society norms within a short period after arrival, suggests that educators should consider how successful academic patterns of newcomers might be adopted by receiving society members. Participant experience indicates that host language acquisition is but one dimension of a multidimensional adaptation experience, and that it is seldom the student's most critical adaptation concern, even in terms of host communication skills. Participants experienced establishing friendships as their most critical and difficult adaptation concern, and looked to friendship to provide uncertainty reduction, access to and inclusion in the receiving society.
Local chemical bonding and structural properties in Ti3AlC2 MAX phase and Ti3C2Tx MXene probed by Ti 1s X-ray absorption spectroscopy
Creators: name: Magnuson, Martin
name: Näslund, Lars-Åke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The chemical bonding within the transition-metal carbide materials MAX phase Ti3AlC2 and MXene Ti3C2Tx is investigated by X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectroscopies. MAX phases are inherently nanolaminated materials that consist of alternating layers of Mn+1Xn and monolayers of an A-element from the IIIA or IVA group in the periodic table, where M is a transition metal and X is either carbon or nitrogen. Replacing the A-element with surface termination species Tx will separate the Mn+1Xn-layers forming two-dimensional (2D) flakes of Mn+1XnTx. For Ti3C2Tx the Tx corresponds to fluorine (F) and oxygen (O) covering both sides of every single 2D Mn+1Xn-flake. The Ti K-edge (1s) XANES of both Ti3AlC2 and Ti3C2Tx exhibit characteristic pre-edge absorption regions of C 2p - Ti 3d hybridization with clear crystal-field splitting's while the main-edge absorption features originate from the Ti 1s -> 4p excitation, where only the latter shows sensitivity towards the fcc-site occupation of the termination species. The coordination numbers obtained from EXAFS show that Ti3AlC2 and Ti3C2Tx are highly anisotropic with a strong in-plane contribution for Ti and with a dynamic out-of-plane contribution from the Al monolayers and termination species, respectively. As shown in the temperature-dependent measurements, the O contribution shifts to shorter bond length while the F diminishes as the temperature is raised from room temperature up to 750 °C.
description: 15 pages, 6 figures, 1 table
KBQuery's Got Your Coverage!
Creators: name: Bradley, Benjamin
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: Python
WorldCat knowledge base
Metadata
Serials

description: KBQuery is a Python script I created that uses the WorldCat Knowledge Base API to automate batch searches of our holdings in the WorldCat knowledge base. The script outputs coverage information which can then be used to support collection management. For example, the script can be used on a list of titles under consideration for cancelation to understand what other avenues the libraries have to access the title (such as an aggregator database or from an open access source). The script can also search on list of entitlements to see if a titles are missing from the KB, so we can identify those missing titles and add them, providing access to those titles. My lightning talk will give an overview of the script, present some real-world applications for the script, and close by discussion some opportunities to further develop the script.
Metamaterials for Ballistic Electrons
Creators: name: Dragoman, Daniela
name: Dragoman, Mircea
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The paper presents a metamaterial for ballistic electrons, which consists of a quantum barrier formed in a semiconductor with negative effective electron mass. This barrier is the analogue of a metamaterial for electromagnetic waves in media with negative electrical permittivity and magnetic permeability. Besides applications similar to those of optical metamaterials, a nanosized slab of a metamaterial for ballistic electrons, sandwiched between quantum wells of positive effective mass materials, reveals unexpected conduction properties, e.g. single or multiple room temperature negative differential conductance regions at very low voltages and with considerable peak-to-valley ratios, while the traversal time of ballistic electrons can be tuned to larger or smaller values than in the absence of the metamaterial slab. Thus, slow and fast electrons, analogous to slow and fast light, occur in metamaterials for ballistic electrons.
Xρήση της διάχυτης υπολογιστικής επιστήμης για τη βελτίωση λειτουργίας μιας φαρμακοβιομηχανίας
Creators: name: Γήτας, Παναγιώτης Χρηστάκη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Εξυπνο blister
Φαρμακοβιομηχανία
Smart blister
Pharmaceutical company

description: Στη διπλωματική αυτή παρουσιάζουμε τρόπους με τους οποίους η διάχυτη υπολογιστική μπορεί να βελτιώσει τη λειτουργία μιας φαρμακοβιομηχανίας. Στο πρώτο κεφάλαιο της διπλωματικής παρουσιάζεται και αναλύεται η έννοια της διάχυτης υπολογιστικής. Στο επόμενο κεφάλαιο γίνεται αναφορά στο μέχρι τώρα γνωστό τρόπο προώθησης των μη συνταγογραφούμενων σκευασμάτων απο τις φαρμακευτικές εταιρίες. Έπειτα γίνεται παρουσίαση των QR Codes και πως αυτά μπορούν να προσφέρουν όφελος στους γιατρούς, στους φαρμακοποιούς και στους καταναλωτές. Ο απώτερος σκοπός είναι η φαρμακευτική εταιρία να χρησιμοποιήσει τα QR Codes ώστε να βελτιστοποιήσει τα αποτελέσματα της. Στο τρίτο κεφάλαιο εξηγούμε τι είναι συμμόρφωση του ασθενή και γιατί αποτελεί τόσο μεγάλο πρόβλημα. Παρουσιάζονται οι έξυπνες συσκευές φαρμάκων. Αναπτύσσονται τρόποι με τους οποίους η φαρμακευτική εταιρία μέσα απο τη χρήση των έξυπνων συσκευών φαρμάκων θα βελτιστοποιήσει τη λειτουργία της. Στο τελευταίο κεφάλαιο έχουμε τη δημιουργία ερωτηματολογίου. Κύριος σκοπός του ερωτηματολογίου είναι να αντλήσει πληροφορίες οι οποίες θα βοηθήσουν στην βελτίωση της έξυπνης συσκευής φαρμάκων ώστε να γίνει περισσότερο αποδεκτή και εύχρηστη απο τον τελικό χρήστη.
description: In this thesis ways are presented in which ubiquitous computing can improve pharmaceutical industry functionality. In the first chapter the concept of ubiquitous computing is presented and analysed. In the next chapter the known ways of promotion of O.T.C (over the counter) by the pharmaceuticals are briefly examined. Afterwards, QR Codes are introduced and examined under the scope of their benefits towards the doctors, the pharmacists and the consumers. The long-term target of a pharmaceutical to use QR Codes would be to improve its financial results. In the third chapter the concept of patient's conformation is explained and the reasons why it consists such a big issue are analysed. Moreover, smart medicine packaging is presented and ways through which by using smart packaging a pharmaceutical can improve its operations are developed. Last but not least, in the last chapter a questionnaire is presented. Main purpose of the questionnaire is to derive pieces of information which will help the improvement of medicine smart packaging. The ultimate goal if the improvement would be the packaging to become more acceptable and functional by the end user.
Times are changing, but some people don’t know that
Creators: name: Maurice, Jacqueline Cheryl
Publisher: name: University of British Columbia
Year: 2009

description: This study examined the (1) interaction patterns of three student teachers (2) illustrations in a social studies, mathematics and French textbook (3) characters in prescribed intermediate novels and (4) written responses of students in grades four to seven to questions about their socialization. Data on student teachers were collected through an observation scheme where each interaction with a student was recorded and categorized into acceptance, remediation, criticism, and praise. Data on textbook illustrations were collected by keeping a count of male and female figures from the beginning to the end of textbooks and then sorting them into categories. Data on prescribed novels were collected by categorizing them into those with sole female leading characters, male and female characters, and one sole or more than one leading male character. Character roles were then detailed to ascertain if the sexes are depicted differently. Data on student socialization were collected through journal writing, a questionnaire, and student drawings. Student teachers were found to interact differently with students according to their sex. Both textbooks and prescribed novels were found to be biased towards males. The students were found to hold stereotyped views of male and female roles in society. Implications for teacher training and future research are discussed.